CN119137421A - Outdoor unit and multi-function water source multi-split system - Google Patents
Outdoor unit and multi-function water source multi-split system Download PDFInfo
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- CN119137421A CN119137421A CN202380037856.3A CN202380037856A CN119137421A CN 119137421 A CN119137421 A CN 119137421A CN 202380037856 A CN202380037856 A CN 202380037856A CN 119137421 A CN119137421 A CN 119137421A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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Abstract
一种室外机(1)及多功能水源多联机系统，室外机(1)包括压缩机(10)、第一板式换热器(80)、第二板式换热器(90)、第一四通阀(20)和第二四通阀(30)。第一板式换热器(80)包括第一冷媒流道(81)和第一水流道(82)。第二板式换热器(90)包括第二冷媒流道(91)和第二水流道(92)，第二水流道(92)和第一水流道(82)中，其中之一被配置为连接水系统终端设备(2)，另一被配置为连接水源。第一四通阀(20)连接第三气侧截止阀(50)、压缩机(10)的出气口(11)、压缩机(10)的进气口(12)和第二冷媒流道(91)的一端，第二冷媒流道(91)的另一端连接液侧截止阀(60)。第二四通阀(30)连接压缩机(10)的出气口(11)、压缩机(10)的进气口(12)、第一冷媒流道(81)的一端，第一冷媒流道(81)的另一端连接液侧截止阀(60)。
An outdoor unit (1) and a multifunctional water source multi-split system, the outdoor unit (1) comprising a compressor (10), a first plate heat exchanger (80), a second plate heat exchanger (90), a first four-way valve (20) and a second four-way valve (30). The first plate heat exchanger (80) comprises a first refrigerant flow channel (81) and a first water flow channel (82). The second plate heat exchanger (90) comprises a second refrigerant flow channel (91) and a second water flow channel (92), one of the second water flow channel (92) and the first water flow channel (82) being configured to be connected to a water system terminal device (2), and the other being configured to be connected to a water source. The first four-way valve (20) is connected to a third gas-side stop valve (50), an air outlet (11) of the compressor (10), an air inlet (12) of the compressor (10) and one end of the second refrigerant flow channel (91), and the other end of the second refrigerant flow channel (91) is connected to a liquid-side stop valve (60). The second four-way valve (30) is connected to the air outlet (11) of the compressor (10), the air inlet (12) of the compressor (10), and one end of the first refrigerant flow channel (81), and the other end of the first refrigerant flow channel (81) is connected to the liquid side stop valve (60).
Description
The present application claims priority from the chinese patent application No. 202211254786.0 filed on 10/13 of 2022 and priority from the chinese patent application No. 202211253954.4 filed on 10/13 of 2022, the entire contents of which are incorporated herein by reference.
The application relates to the technical field of air conditioners, in particular to an outdoor unit and a multifunctional water source multi-split system.
The water source multi-split system (water source machine) combines the water source heat pump technology with the air source multi-split system, the cold and hot source side is the same as the water source heat pump system, water is adopted as an energy transportation medium, the indoor side is the same as the multi-split system, and a refrigerant is adopted as the energy transportation medium.
Disclosure of Invention
In one aspect, an outdoor unit is provided that includes a compressor, a first plate heat exchanger, a second plate heat exchanger, a first four-way valve, and a second four-way valve. The first plate heat exchanger includes a first refrigerant flow passage and a first water flow passage. The second plate heat exchanger comprises a second refrigerant flow passage and a second water flow passage, wherein one of the second water flow passage and the first water flow passage is configured to be connected with a water system terminal device, and the other is configured to be connected with a water source. The first four-way valve is connected with the third air side stop valve through a first port, the second port is connected with the air outlet of the compressor, the third port is connected with the air inlet of the compressor, the fourth port is connected with one end of the second refrigerant flow passage, and the other end of the second refrigerant flow passage is connected with the liquid side stop valve through a second electronic expansion valve. The second four-way valve is connected with the air outlet of the compressor through a second port, the third port of the second four-way valve is connected with the air inlet of the compressor, the fourth port of the second four-way valve is connected with one end of the first refrigerant flow passage, and the other end of the first refrigerant flow passage is connected with the liquid side stop valve through a first electronic expansion valve.
On the other hand, a multifunctional water source multi-split system is provided, which comprises a water system terminal device and the outdoor unit according to any one of the embodiments, wherein the water system terminal device is connected with one of the first water flow channel and the second water flow channel of the outdoor unit.
In still another aspect, an outdoor unit is provided, including a compressor, a first plate heat exchanger, a second plate heat exchanger, a first four-way valve, a second four-way valve, and a third four-way valve. The first plate heat exchanger includes a first refrigerant flow passage and a first water flow passage. The second plate heat exchanger comprises a second refrigerant flow passage and a second water flow passage, wherein one of the second water flow passage and the first water flow passage is configured to be connected with a water system terminal device, and the other is configured to be connected with a water source. The first four-way valve is connected with the first air side stop valve through a first port, is connected with the air outlet of the compressor through a second port, and is connected with the air inlet of the compressor through a third port and is connected with the second air side stop valve. The second four-way valve is connected with the air outlet of the compressor through a second port, the third port of the second four-way valve is connected with the air inlet of the compressor and is connected with the second air side stop valve, the fourth port of the second four-way valve is connected with one end of the second refrigerant flow passage, and the other end of the second refrigerant flow passage is connected with the liquid side stop valve through a second expansion valve. And the second port of the third four-way valve is connected with the air outlet of the compressor, the third port of the third four-way valve is connected with the air inlet of the compressor and is connected with the second air side stop valve, the fourth port of the third four-way valve is connected with one end of the first refrigerant flow passage, and the other end of the first refrigerant flow passage is connected with the liquid side stop valve through the first expansion valve.
In still another aspect, a multifunctional water source machine is provided, including a water system terminal device and an outdoor unit according to any one of the embodiments described above, where the water system terminal device is connected to one of the first water flow channel and the second water flow channel of the outdoor unit.
FIG. 1 is a schematic diagram showing the structure of an outdoor unit of a related art multifunctional water source multi-split system;
FIG. 2 is a schematic diagram of a related art multi-functional water source multi-split system;
FIG. 3 is a schematic diagram of an outdoor unit of a multi-split water source system according to some embodiments;
FIG. 4 illustrates a schematic diagram of a water source multi-split system architecture in accordance with some embodiments;
FIG. 5 is a schematic diagram of the system operation principle of the water source multi-split system according to some embodiments when the water source multi-split system is used for independently producing water;
FIG. 6 is a schematic diagram of the system operation principle of some embodiments of the water source multi-split system when cooling water alone;
FIG. 7 shows a schematic diagram of a water source multi-split system according to other embodiments;
FIG. 8 is a schematic diagram showing the operation principle of the system when the water source multi-split system singly heats water according to other embodiments;
FIG. 9 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments when cold water is independently produced;
FIG. 10 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments when the water source multi-split system is used for refrigerating, heating and recycling hot water;
FIG. 11 is a schematic diagram of an outdoor unit of a multi-split water source system according to another embodiment;
FIG. 12 is a schematic diagram of a water source multi-split system according to other embodiments;
FIG. 13 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments when the water source multi-split system is used for independently producing water;
FIG. 14 is a schematic diagram showing the principle of operation of the system when the water source multi-split system of other embodiments is used for independently cooling water;
FIG. 15 is a schematic diagram of a water source multi-split system according to other embodiments;
FIG. 16 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments when the water source multi-split system is used for independently producing water;
FIG. 17 is a schematic diagram showing the principle of operation of the system when the water source multi-split system of other embodiments is used for independently cooling water;
FIG. 18 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments during cooling and heat recovery of hot water;
FIG. 19 is a schematic diagram of another operation mode of the water source multi-split system for cooling and heat recovery of hot water according to other embodiments;
FIG. 20 is a schematic diagram showing the operation principle of the water source multi-split system according to other embodiments when heating and heat recovery are performed to produce hot water;
FIG. 21 is a schematic diagram showing the operation principle of the water source multi-split system according to other embodiments when heating and heat recovering refrigerating water;
Fig. 22 is a schematic diagram of another operation mode of the water source multi-split system heating and heat recovery refrigeration water according to other embodiments.
Some embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the disclosure. All other embodiments obtained by one of ordinary skill in the art based on the embodiments provided by the present disclosure are within the scope of the present disclosure.
Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and its other forms such as the third person referring to the singular form "comprise" and the present word "comprising" are to be construed as open, inclusive meaning, i.e. as "comprising, but not limited to. In the description of the specification, the terms "one embodiment", "some embodiments (some embodiments)", "exemplary embodiment (exemplary embodiments)", "example (example)", "specific example (some examples)", etc. are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.
In describing some embodiments, expressions of "coupled" and "connected" and their derivatives may be used. The term "coupled" is used in a broad sense, and may be either permanently coupled, detachably coupled, or integrally formed, or indirectly coupled via an intervening medium, for example. The term "coupled" for example, indicates that two or more elements are in direct physical or electrical contact. The term "coupled" or "communicatively coupled (communicatively coupled)" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the disclosure herein.
"A and/or B" includes three combinations of A only, B only, and a combination of A and B.
The use of "adapted" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.
In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.
The air conditioner of the present application performs a refrigerating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and refrigerating or heating an indoor space.
The low-temperature low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas into a high-temperature high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state formed by condensation in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.
An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.
The water source multi-split system (water source machine) combines the water source heat pump technology with the air source multi-split system, the cold and hot source side is the same as the water source heat pump system, water is adopted as an energy transportation medium, the indoor side is the same as the multi-split system, and a refrigerant is adopted as the energy transportation medium. The cold and hot sources of the water source multi-split system are usually ground water, surface water and the like.
Fig. 1 shows a schematic diagram of an outdoor unit structure of a related art multifunctional water source multi-split system, and fig. 2 shows a schematic diagram of a related art multifunctional water source multi-split system.
In the related art, as shown in fig. 1, an outdoor unit of the water source machine is generally provided with only one outdoor plate heat exchanger 1A, which is used as a water source side heat exchanger, wherein one of the flow channels of the outdoor plate heat exchanger 1A is a refrigerant flow channel, the other flow channel is a water flow channel, and heat exchange between the refrigerant and the water is realized in the outdoor plate heat exchanger 1A, so that the refrigerating/heating function of the air conditioner is realized, and the arrow direction in fig. 1 is the water flow direction. Referring to fig. 2, in order to achieve other functions, such as cold water/hot water production, a set of indoor units 2A needs to be separately arranged, and the indoor units are provided with indoor plate type heat exchangers 3A configured to exchange heat with a refrigerant to produce cold water/hot water and output the cold water/hot water to a user, as shown in fig. 1, that is, in order to produce cold water/hot water, the indoor units 2A must be turned on, so that the user side must be required to be provided with the indoor units 2A, which has high use limitation, cannot be suitable for disclosure excluding the indoor units, has high cost, and cannot achieve heat recovery to produce hot water.
Accordingly, the present application provides an outdoor unit and a water source multi-split system, which can solve the above problems in the related art. The specific structure and working principle of the outdoor unit and the water source multi-split system of the present application are described in detail below with specific embodiments.
Fig. 3 is a schematic diagram illustrating an outdoor unit structure of a water source multi-split system according to some embodiments.
In some embodiments, as shown in fig. 3, the outdoor unit 1 includes a compressor 10, a first plate heat exchanger 80, a second plate heat exchanger 90, a first four-way valve 20, and a second four-way valve 30, which are connected in order of refrigerant flow to form a circuit. The compressor 10 is provided with a compressor air outlet 11 (also called an air outlet) and a compressor air inlet 12 (also called an air inlet).
The first plate heat exchanger 80 includes a first refrigerant flow passage 81 for refrigerant flow therethrough and a first water flow passage 82 for water flow therethrough.
The second plate heat exchanger 90 includes a second refrigerant flow passage 91 and a second water flow passage 92, the second refrigerant flow passage 91 being used for refrigerant flow, the second water flow passage 92 being used for water flow, one of the second water flow passage 92 and the first water flow passage 82 being configured to be connected to a water system terminal device 2 such as a water tank, a floor heating water pipe, etc., and the other being configured to be connected to a water source. In some embodiments, the first plate heat exchanger 80 is connected to the user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
The first port 21 of the first four-way valve is connected to a third air-side stop valve 50, the second port 22 of the first four-way valve is connected to the air outlet 11 of the compressor, the third port 23 of the first four-way valve is connected to the air inlet 12 of the compressor, the fourth port 24 of the first four-way valve is connected to one end of a second refrigerant flow channel 91, and the other end of the second refrigerant flow channel 91 is connected to a liquid-side stop valve 60 through a second expansion valve 70.
The second four-way valve second port 32 is connected to the compressor air outlet 11, the second four-way valve third port 33 is connected to the compressor air inlet 12, the second four-way valve fourth port 34 is connected to one end of the first refrigerant flow passage 81, and the other end of the first refrigerant flow passage 81 is also connected to the liquid side stop valve 60 through the first expansion valve 40.
By arranging the first plate heat exchanger 80, the second plate heat exchanger 90, the first four-way valve 20 and the second four-way valve 30 in the outdoor unit 1, the third air side stop valve 50 and the liquid side stop valve 60 can realize independent water heating and independent water heating when the independent outdoor unit 1 operates, an indoor unit is not required to operate or an indoor unit is not required to be configured, so that the cost when cold water/hot water is independently prepared can be reduced, and the air conditioner can also realize refrigeration, heating and water recovery when the indoor unit operates, thereby further enriching the functions of the multifunctional water source multi-split air conditioner system, reducing the energy consumption of the system and improving the use convenience.
In some embodiments, a first water pump 100 is provided on the first water flow path 82 to provide a driving force for water flow in the first water flow path 82, and a second water pump 110 is provided on the second water flow path 92 to provide a driving force for water flow in the second water flow path 92. Specifically, a first water pump 100 is provided on the water inlet end of the first water flow path 82, and a second water pump 110 is provided on the water inlet end of the second water flow path 92.
In some embodiments, a first pipe 120 is connected between the first port 21 of the first four-way valve and the third port 23 of the first four-way valve, a first capillary 130 is disposed on the first pipe 120, i.e. a section of the first capillary 130 is connected to the first pipe 120, so that the refrigerant in the first four-way valve 20 can be always in a flowing state when the third air-side stop valve 50 and the liquid-side stop valve 60 are closed without the indoor unit, so as to prevent the liquid-striking phenomenon at the moment of reversing the first four-way valve 20, and thus the first four-way valve 20 can be protected, the first port 31 of the second four-way valve can be closed, or as shown in fig. 3, the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve through the second pipe 140, and a section of the second capillary 150 is disposed on the second pipe 140, i.e. a section of the second capillary 150 is connected to the second pipe 140, so that the refrigerant in the second four-way valve 30 is always in a flowing state, and the liquid-striking phenomenon at the moment of reversing the second four-way valve 30 is prevented, and thus the second four-way valve 30 can be protected.
In some embodiments, the compressor outlet 11 is connected to a third pipeline 160, and the third pipeline 160 is connected to the first four-way valve second port 22 and the second four-way valve second port 32 through a three-way member, so that the first four-way valve second port 22 and the second four-way valve second port 32 are simultaneously connected to the compressor outlet 11.
Fig. 4 shows a schematic structural diagram of a water source multi-split system according to some embodiments, and as shown in fig. 4, a multifunctional water source multi-split system is further provided in some embodiments, and includes a water system terminal device 2, where the water system terminal device 2 may be a water tank, a floor heating water pipe, and the like, and further includes an outdoor unit 1 described in some embodiments, where the water system terminal device 2 is connected to one of the first water flow channel 82 and the second water flow channel 92 of the outdoor unit 1, and the other of the first water flow channel 82 and the second water flow channel 92 is connected to a water source. In some embodiments, the first plate heat exchanger 80 is connected to the user side, i.e. the first water flow channel 82 is connected to the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
In some embodiments, the multi-functional water source multi-split system includes a single water heating mode and a single water cooling mode.
Fig. 5 shows a schematic diagram of the system operation principle when the water source multi-split system separately heats water, as shown in fig. 5, in which the water source multi-split system does not include an indoor unit, and the single-split system specifically operates in such a manner that the third air side stop valve 50 and the liquid side stop valve 60 are closed, the pipeline where the third air side stop valve 50 and the liquid side stop valve 60 are positioned has refrigerant, but the refrigerant does not flow, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, the second plate heat exchanger 90 is used as an evaporator, the first four-way valve third port 23 is communicated with the first four-way valve fourth port 24, the first four-way valve first port 21 is communicated with the first four-way valve second port 22, the second four-way valve second port 32 is communicated with the second four-way valve fourth port 34, the second four-way valve first port 31 is communicated with the second four-way valve third port 33, the high-pressure gaseous refrigerant sequentially flows from the air outlet 11 of the compressor to the second four-way valve 30, the first plate heat exchanger 80 is changed into high-pressure medium-temperature liquid refrigerant, then flows through the first expansion valve 40, the second expansion valve 70 and the second plate heat exchanger 90 is changed into the low-pressure medium-temperature refrigerant, and finally flows back through the first four-way valve 12 to the compressor 10, and then flows through the low-pressure air inlet 12 to the compressor 12.
Fig. 6 shows a schematic diagram of the system operation principle when the water source multi-split system of some embodiments separately cools water, as shown in fig. 6, where the water source multi-split system does not include an indoor unit, and the separate cooling water mode specifically operates as follows, in which the third air side stop valve 50 and the liquid side stop valve 60 are both closed, even if the refrigerant exists in the pipeline where the refrigerant does not flow, the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate heat exchanger 80 is an evaporator, the second plate heat exchanger 90 is a condenser, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the second four-way valve third port 33 is communicated with the second four-way valve fourth port 34, the second four-way valve first port 31 is communicated with the second four-way valve second port 32, and the high-temperature high-pressure gaseous refrigerant sequentially flows from the compressor outlet 11 through the first four-way valve 20, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80, the second four-way heat exchanger 30, and the compressor 10. The outdoor unit and the water source multi-split system can realize the functions of independently cooling water and independently heating water in some embodiments.
In some embodiments the first water flow path 82 is still connected to the water system terminal device 2 and the second water flow path 92 is still connected to the water source.
Fig. 7 shows a schematic structural diagram of a water source multi-split system according to other embodiments, as shown in fig. 7, in some embodiments, the multi-functional water source multi-split system further includes indoor units 3, specifically, two indoor units 3, each indoor unit 3 is provided with an indoor heat exchanger 3-1, one port of the indoor heat exchanger 3-1 is connected with a third air side stop valve 50 of the outdoor unit 1, and another port of the indoor heat exchanger 3-1 is connected with a liquid side stop valve 60 of the outdoor unit 1 through a throttling device 3-2 (specifically, also an electronic expansion valve).
Fig. 8 is a schematic diagram illustrating the operation principle of the water source multi-split system according to other embodiments when the water source multi-split system singly heats water, as shown in fig. 8, the indoor unit 3 is not started, the third air side stop valve 50 and the liquid side stop valve 60 can keep an open state, because the indoor unit 3 is not started, the refrigerant does not flow in the indoor heat exchanger 3-1 or the flow rate is very slow, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, the second plate heat exchanger 90 is used as an evaporator, the first four-way valve third port 23 is communicated with the first four-way valve fourth port 24, the first four-way valve first port 21 is communicated with the first four-way valve second port 22, the second four-way valve second port 32 is communicated with the second four-way valve fourth port 34, the second four-way valve first port 31 is communicated with the second four-way valve third port 33, the high-temperature high-pressure gaseous refrigerant sequentially flows through the second four-way valve 30 from the air outlet 11 of the compressor, the first plate heat exchanger 80 is changed into a high-pressure medium-temperature liquid refrigerant, then flows through the first expansion valve 40, the second plate heat exchanger 90 is used as a low-pressure medium-temperature refrigerant through the first expansion valve 70, and flows through the second plate heat exchanger 20 to the low-pressure refrigerant through the first four-way valve 12, and finally flows back through the compressor 12 to the low-pressure heat exchanger 10 to the air inlet 12.
Fig. 9 shows a schematic diagram of the system operation principle when the water source multi-split system of other embodiments separately cools water, as shown in fig. 9, the indoor unit 3 is not started, the third air side stop valve 50 and the liquid side stop valve 60 can keep an open state, and the refrigerant does not flow in the indoor heat exchanger 3-1 or has a very slow flow rate because the indoor unit 3 is not started, and the single cooling water mode specifically operates as follows, the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate heat exchanger 80 is used as an evaporator, the second plate heat exchanger 90 is used as a condenser, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the second four-way valve third port 33 is communicated with the second four-way valve fourth port 34, the second four-way valve first port 31 is communicated with the second four-way valve second port 32, and the high-temperature high-pressure gaseous refrigerant sequentially flows from the compressor air outlet 11 through the first valve 20, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80, the second four-way valve 80, and the compressor 10 flows back to the compressor 10.
In some embodiments, the water source multi-split system can also realize the functions of refrigerating, heating, recovering and heating water, and fig. 10 shows a schematic diagram of the operation principle of the water source multi-split system in other embodiments when refrigerating, heating, recovering and heating water. As shown in FIG. 10, the specific operation of the cooling and heating modes is that the indoor unit 3 is in a cooling operation, the throttling device 3-2 is in a throttling state, the third air side stop valve 50 and the liquid side stop valve 60 are opened, the first expansion valve 40 is fully opened, the second expansion valve 70 is fully opened, and the first plate heat exchanger 80 and the second plate heat exchanger 90 are both condensers; the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the second four-way valve second port 32 is communicated with the second four-way valve fourth port 34, the second four-way valve first port 31 is communicated with the second four-way valve third port 33, the high-temperature high-pressure gaseous refrigerant flows through the first four-way valve 20 and the second four-way valve 30 respectively in two paths from the output of the compressor air outlet 11, the refrigerant flowing through the first four-way valve 20 then flows through the second plate heat exchanger 90, the second expansion valve 70, the liquid side stop valve 60 and the throttling device 3-2 of the indoor unit 3 to enter the indoor heat exchanger 3-1, then flows back to the compressor 10 through the third air side stop valve 50 and the first four-way valve 20, and simultaneously, the refrigerant flowing through the second four-way valve 30 then flows through the first plate heat exchanger 80, the first expansion valve 40, the liquid side stop valve 60 and the throttling device 3-2 of the indoor unit 3 to enter the indoor heat exchanger 3-1, and then flows back to the first four-way valve 20 to the compressor 10. The outdoor unit and the water source multi-split system can realize the functions of independently cooling water, independently heating water and recovering the heated water in some embodiments.
Fig. 11 is a schematic diagram illustrating an outdoor unit of a water source multi-split system according to another embodiment, and as shown in fig. 11, the outdoor unit 1 includes a compressor 10, a first plate heat exchanger 80, a second plate heat exchanger 90, a first four-way valve 20, a second four-way valve 30, and a third four-way valve 170, which are connected in order of refrigerant flow to form a circuit.
The compressor 10 is provided with a compressor air outlet 11 (also called an air outlet) and a compressor air inlet 12 (also called an air inlet).
The first plate heat exchanger 80 includes a first refrigerant flow passage 81 for refrigerant flow therethrough and a first water flow passage 82 for water flow therethrough.
The second plate heat exchanger 90 includes a second refrigerant flow channel 91 and a second water flow channel 92, the second refrigerant flow channel 91 is used for refrigerant flowing, the second water flow channel 92 is used for water flowing, one of the second water flow channel 92 and the first water flow channel 82 is used for connecting with a water system terminal device 2, such as a water tank, a floor heating water pipe, and the like, the other is configured to be connected with a water source, in this embodiment, the first plate heat exchanger 80 is connected with a user side, that is, the first water flow channel 82 is connected with the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected with the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected with the water outlet end of the water source, and the water inlet end of the second water flow channel 92 is connected with the water outlet end of the water source.
The first four-way valve first port 21 is connected to a first air side shut-off valve 51, the first four-way valve second port 22 is connected to the compressor air outlet 11, and the first four-way valve third port 23 is connected to the compressor air inlet 12 and to a second air side shut-off valve 52.
The second four-way valve second port 32 is connected to the compressor air outlet 11, the second four-way valve third port 33 is connected to the compressor air inlet 12 and to the second air side stop valve 52, the second four-way valve fourth port 34 is connected to one end of the second refrigerant flow passage 91, and the other end of the second refrigerant flow passage 91 is also connected to the liquid side stop valve 60 through the second expansion valve 70.
The third four-way valve second port 172 is connected to the compressor air outlet 11, the third four-way valve third port 173 is connected to the compressor air inlet and to the second air side stop valve 52, the third four-way valve fourth port 174 is connected to one end of the first refrigerant flow passage 81, and the other end of the first refrigerant flow passage 81 is connected to the liquid side stop valve 60 through the first expansion valve 40.
By arranging the first plate heat exchanger 80 and the second plate heat exchanger 90, the first four-way valve 20, the second four-way valve 30 and the third four-way valve 170 in the outdoor unit 1, the first air side stop valve 51, the second air side stop valve 52 and the liquid side stop valve 60 can realize independent heating water and independent cooling water when the independent outdoor unit 1 operates, an indoor unit is not required to operate or be configured, so that the cost when independent cold and hot water is manufactured can be reduced, and when the indoor unit operates, air conditioner refrigeration, heat recovery, heating water, air conditioner heating, heat recovery, air conditioner heating and heat recovery, cooling water can be realized.
In some embodiments, a first water pump 100 is provided on the first water flow path 82 to provide a driving force for water flow in the first water flow path 82, and a second water pump 110 is provided on the second water flow path 92 to provide a driving force for water flow in the second water flow path 92. Specifically, in the present embodiment, the first water pump 100 is provided on the water inlet end of the first water flow path 82, and the second water pump 110 is provided on the water inlet end of the second water flow path 92.
In this embodiment, a first pipe 120 is connected between the fourth port 24 of the first four-way valve and the third port 23 of the first four-way valve, and a first capillary 130 is disposed on the first pipe 120, i.e. a section of the first capillary 130 is connected to the first pipe 120, so that the refrigerant in the first four-way valve 20 can be always in a flowing state when the indoor unit is not included or the indoor unit is not started, or when the third air-side stop valve 50 and the liquid-side stop valve 60 are closed, and the liquid-strike phenomenon is prevented from happening at the moment of reversing the first four-way valve 20, thereby protecting the first four-way valve 20.
Similarly, the first port 31 of the second four-way valve may be closed, or as shown in fig. 11, the first port 31 of the second four-way valve is connected with the third port 33 of the second four-way valve through the second pipeline 140, and the second pipeline 140 is provided with the second capillary tube 150, that is, the second pipeline 140 is communicated with a section of the second capillary tube 150, so that the refrigerant in the second four-way valve 30 is always in a flowing state, and the phenomenon of liquid impact occurring in the moment of reversing the second four-way valve 30 is prevented, thereby protecting the second four-way valve 30.
Similarly, the first port 171 of the third four-way valve may be closed, or as shown in fig. 12, a fifth pipeline 180 is connected between the first port 171 of the third four-way valve and the third port 173 of the third four-way valve, and a third capillary 190 is disposed on the fifth pipeline 180, so that the cooling in the third four-way valve 170 is always in a flowing state, and the phenomenon of liquid impact at the moment of reversing the third four-way valve 170 is prevented, thereby protecting the third four-way valve 170.
In some embodiments, the compressor outlet 11 is connected to the fourth line 161, and the first four-way valve second port 22, the second four-way valve second port 32, and the third four-way valve second port 172 are connected in parallel to the fourth line 161, thereby simultaneously connecting the compressor outlet 11.
Similarly, the compressor inlet 12 is connected to the sixth pipeline 200, and the first four-way valve third port 23, the second four-way valve third port 33, and the third four-way valve third port 173 are connected in parallel to the sixth pipeline 200.
Fig. 12 shows a schematic structural diagram of a water source multi-split system according to other embodiments, and as shown in fig. 12, some embodiments further provide a multifunctional water source machine, which includes a water system terminal device 2, where the water system terminal device 2 may be a water tank, a floor heating water pipe, etc., and further includes the outdoor unit 1 described in this embodiment, the water system terminal device 2 is connected to one of the first water flow channel 82 and the second water flow channel 92 of the outdoor unit 1, the other of the first water flow channel 82 and the second water flow channel 92 is connected to a water source, in this embodiment, the first plate heat exchanger 80 is connected to a user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
Fig. 13 is a schematic diagram illustrating the operation principle of the water source multi-split system in other embodiments when the water source multi-split system singly heats water, as shown in fig. 13, in which the water source multi-split system does not include an indoor unit, and the single-split system specifically operates in such a manner that the first air side stop valve 51, the second air side stop valve 52 and the liquid side stop valve 60 are closed, the pipelines where the first air side stop valve 51, the second air side stop valve 52 and the liquid side stop valve 60 are positioned are all closed, the refrigerant does not flow, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, the second plate heat exchanger 90 is used as an evaporator, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the second four-way valve first port 31 is communicated with the second four-way valve second port 32, the second four-way valve third port 33 is communicated with the second four-way valve fourth port 34, the third four-way valve second port 172 is communicated with the third four-way valve fourth port 174, the third four-way valve first port 171 is communicated with the third four-way valve third four-port 173 is communicated with the third four-way valve fourth port 173, the high-pressure refrigerant flows from the first plate heat exchanger 11, the first heat exchanger 11, the second heat exchanger 11 and the third heat exchanger 80 is flowed back to the third heat exchanger 10 and the compressor 70 through the first heat exchanger 100, the air exchanger 10 and the third heat exchanger 100 is compressed by the air.
Fig. 14 shows a schematic diagram of the system operation principle when the water source multi-split system of other embodiments separately cools water, as shown in fig. 14, and at this time, the water source multi-split system does not include an indoor unit, and the single-split system specifically operates in such a manner that the first air side stop valve 51, the second air side stop valve 52 and the liquid side stop valve 60 are closed, the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate heat exchanger 80 is used as an evaporator, the second plate heat exchanger 90 is used as a condenser, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the second four-way valve first port 31 is communicated with the second four-way valve third port 33, the second four-way valve second port 32 is communicated with the second four-way valve fourth port 34, the third four-way valve first port 171 is communicated with the third four-way valve second port 172, the third four-way valve third port 173 is communicated with the third four-way valve fourth port 174, and the high-pressure refrigerant flows back to the first plate heat exchanger 10, the second four-way valve heat exchanger 70 and the high-pressure heat exchanger 10 is discharged from the first four-way valve 11, the second four-way valve heat exchanger 80 is flowed back to the third plate heat exchanger 70. The outdoor unit and the water source multi-split system can realize the functions of independently cooling water and independently heating water.
Fig. 15 shows a schematic structural diagram of a water source multi-split system according to another embodiment, as shown in fig. 5, in addition to an outdoor unit 1 and a water system terminal device 2 in one embodiment, the multi-functional water source machine of this embodiment further includes indoor units 3, specifically two indoor units 3, each indoor unit 3 is provided with an indoor heat exchanger 3-1, one port of the indoor heat exchanger 3-1 is connected with a first air side stop valve 51 of the outdoor unit 1, and the other port of the indoor heat exchanger 3-1 is connected with a liquid side stop valve 60 of the outdoor unit 1 through a throttling device 3-2 (specifically, an expansion valve as well).
Fig. 16 shows a schematic diagram of the system operation principle when the water source multi-split system of other embodiments separately heats water, as shown in fig. 16, the indoor unit 3 is not started, the first air side stop valve 51 and the liquid side stop valve 60 can keep open, the second air side stop valve 52 is closed, the refrigerant does not flow in the indoor heat exchanger 3-1 or the flow rate is very slow due to the fact that the indoor unit 3 is not started, the single water heating mode specifically operates as follows, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, the second plate heat exchanger 90 is used as an evaporator, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the second four-way valve first port 31 is communicated with the second four-way valve second port 32, the second four-way valve third port 33 is communicated with the second four-way valve fourth port 34, the third four-way valve second port 172 is communicated with the third four-way valve fourth port 174, the third four-way valve fourth port 171 is communicated with the third four-way valve fourth port 173, and the refrigerant flows back to the first plate heat exchanger 100, the first heat exchanger 10 and the second heat exchanger 70 is compressed from the first heat exchanger 10 to the air inlet and the second heat exchanger 70.
Fig. 17 is a schematic diagram illustrating the operation principle of the system when the water source multi-split system of other embodiments separately heats cold water, as shown in fig. 17, the indoor unit 3 is not started, the first air side stop valve 51 and the liquid side stop valve 60 can be kept in an opened state, the second air side stop valve 52 is closed, and the refrigerant does not flow in the indoor heat exchanger 3-1 or has a slow flow rate due to the fact that the indoor unit 3 is not started; the single cooling water mode specifically operates by the first expansion valve 40 being throttled, the second expansion valve 70 being fully opened, the first plate heat exchanger 80 being an evaporator, the second plate heat exchanger 90 being a condenser, the first four-way valve first port 21 being in communication with the first four-way valve third port 23, the first four-way valve second port 22 being in communication with the first four-way valve fourth port 24, the second four-way valve first port 31 being in communication with the second four-way valve third port 33, the second four-way valve second port 32 being in communication with the second four-way valve fourth port 34, the third four-way valve first port 171 being in communication with the third four-way valve second port 172, the third four-way valve third port 173 being in communication with the third four-way valve fourth port 174, the high temperature, high pressure gaseous refrigerant flowing from the compressor outlet 11 through the second four-way valve 30, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80, the third four-way valve 170 and back into the compressor 10 through the compressor inlet 12.
Different from the first embodiment, the water source multi-split system in the embodiment can also realize the working modes of refrigeration, heat recovery, hot water heating, heat recovery and cold water heating functions, namely, refrigeration, heat recovery, hot water heating modes and heat recovery and cold water heating modes.
Fig. 18 is a schematic diagram illustrating the operation principle of the water source multi-split system according to other embodiments when cooling and heat recovering hot water. As shown in FIG. 18, at this time, the indoor side heat load is small and the user side water consumption is large, and the refrigerating and heating modes specifically operate as follows, namely, the indoor unit 3 is in refrigerating operation, the first air side stop valve 51 and the liquid side stop valve 60 are opened, the second air side stop valve 52 is closed, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, the second plate heat exchanger 90 is used as an evaporator, the first four-way valve first port 21 is communicated with the first four-way valve third port 23, the first four-way valve second port 22 is communicated with the first four-way valve fourth port 24, the second four-way valve first port 31 is communicated with the second four-way valve second port 32, the second four-way valve third port 33 is communicated with the second four-way valve fourth port 34, the third four-way valve second port 172 is communicated with the third four-way valve fourth port 174, the third four-way valve first port 171 is communicated with the third four-way valve third port 173, the high-temperature high-pressure air-state refrigerant flows from the compressor air outlet 11 to the third four-way valve 170, the first plate heat exchanger 80 is communicated with the first four-way valve third port 23, the first four-way valve fourth port 22 is communicated with the first four-way valve fourth port 24, the second four-way valve 31 is simultaneously flows back to the compressor 1 through the expansion valve 1 and the third four-way valve 60, and the refrigerant flows from the first four-way valve 6 to the fourth port 1 side 60 through the expansion valve 1 and the third valve 6 to the expansion valve 1 and the fourth port 60.
Fig. 19 is a schematic diagram of another operation mode of the water source multi-split system for cooling and heat recovery and heating water according to other embodiments. As shown in FIG. 19, at this time, the indoor side heat load is equivalent to the user side water consumption, and the refrigerating and heating mode specifically operates as follows, the indoor unit 3 is in refrigerating operation, the first air side stop valve 51 and the liquid side stop valve 60 are opened, the second air side stop valve 52 is closed, the first expansion valve 40 is fully opened, the second expansion valve 70 is closed, the first four-way valve first port 21 and the first four-way valve third port 23 are communicated, the first four-way valve second port 22 and the first four-way valve fourth port 24 are communicated, the second four-way valve first port 31 and the second four-way valve third port 33 are communicated, the second four-way valve second port 32 and the second four-way valve fourth port 34 are communicated, the third four-way valve second port 172 and the third four-way valve fourth port 174 are communicated, the third four-way valve first port 171 and the third four-way valve third port 173 are communicated, and the high-temperature high-pressure high-state refrigerant is output from the compressor air outlet 11, passes through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the liquid side stop valve 60, the throttling device 3-2 enters the indoor heat exchanger 3-1 and the fourth port 34 and the fourth four-way valve fourth port 34 is communicated, the third four-way valve fourth port 172 is communicated, and the fourth air side stop valve 51 is communicated through the fourth air side stop valve 20 is communicated.
FIG. 20 is a schematic diagram showing the operation principle of the water source multi-split system according to other embodiments when heating and heating water. As shown in FIG. 20, the heating and hot water heating operation is specifically performed by the indoor unit 3 heating operation, the throttling device 3-2 is fully opened, the first air side stop valve 51 and the liquid side stop valve 60 are opened, the second air side stop valve 52 is closed, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, and the second plate heat exchanger 90 is used as an evaporator; the first port 21 of the first four-way valve is communicated with the second port 22 of the first four-way valve, the third port 23 of the first four-way valve is communicated with the fourth port 24 of the first four-way valve, the first port 31 of the second four-way valve is communicated with the second port 32 of the second four-way valve, the third port 33 of the second four-way valve is communicated with the fourth port 34 of the second four-way valve, the first port 171 of the third four-way valve is communicated with the third port 173 of the third four-way valve, the second port 172 of the third four-way valve is communicated with the fourth port 174 of the third four-way valve, the high-temperature and high-pressure gaseous refrigerant is output from the compressor air outlet 11, flows back to the compressor 10 through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the second expansion valve 70, the second plate heat exchanger 90 and the second four-way valve 30, flows back to the compressor 10 through the compressor air inlet 12, and simultaneously, the high-temperature and high-pressure gaseous refrigerant output from the compressor air outlet 11 also flows through the first four-way valve 20, the first air side stop valve 51, the indoor heat exchanger 3-1, the throttle device 3-2, the liquid side stop valve 70, the second plate heat exchanger 70 and the second plate heat exchanger 90 and the compressor 10.
FIG. 21 is a schematic diagram showing the principle of operation of the water source multi-split system according to other embodiments when heating and cooling water. As shown in FIG. 21, the heating and refrigerating water specifically operates by the indoor unit 3 heating operation, the first air side stop valve 51 and the liquid side stop valve 60 are opened, the second air side stop valve 52 is closed, the first expansion valve 40 is throttled, the second expansion valve 70 is throttled, the first plate heat exchanger 80 and the second plate heat exchanger 90 are both used as evaporators, the first four-way valve first port 21 and the first four-way valve second port 22 are communicated, the first four-way valve third port 23 and the first four-way valve fourth port 24 are communicated, the second four-way valve first port 31 and the second four-way valve second port 32 are communicated, the second four-way valve third port 33 and the second four-way valve fourth port 34 are communicated, the third four-way valve first port 171 and the third four-way valve second port 172 are communicated, the high-pressure air state refrigerant flows from the compressor air outlet 11 through the first four-way valve 20, the first air side stop valve 51 and the first four-way valve second port 22, the first four-way valve third port 31 and the first four-way valve fourth port 24, the second four-way valve 31 and the second four-way valve second port 32 are communicated, the third four-way valve first four-way valve 171 and the third four-way valve fourth port 174 are communicated, the high-pressure air state refrigerant flows from the compressor air outlet 11 through the first four-way valve 11, the first four-way valve 60, the fourth valve 60 and the fourth valve 70 and the compressor and the expansion valve 70 and the refrigerant flows back to the compressor 10, the compressor and the air inlet 10 and the air inlet 60 and the air valve 60.
Fig. 22 is a schematic diagram of another operation mode of the water source multi-split system heating and heat recovery refrigeration water according to other embodiments. As shown in fig. 22, the heating and refrigerating water specifically operates by opening the indoor unit 3, closing the first air side stop valve 51 and the liquid side stop valve 60, closing the second air side stop valve 52, throttling the first expansion valve 40, closing the second expansion valve 70, communicating the first four-way valve first port 21 with the first four-way valve second port 22, communicating the first four-way valve third port 23 with the first four-way valve fourth port 24, communicating the second four-way valve first port 31 with the second four-way valve second port 32, communicating the second four-way valve third port 33 with the second four-way valve fourth port 34, communicating the third four-way valve first port 171 with the third four-way valve second port 172, communicating the third four-way valve third port 173 with the third four-way valve fourth port 174, outputting the high-temperature gaseous refrigerant from the compressor air outlet 11 through the first four-way valve 20, the first air side stop valve 51, into the indoor heat exchanger 3-1, and then flowing back to the compressor 10 through the throttling device 3-2, the liquid side stop valve 60, the first expansion valve 40, the first plate heat exchanger 80, the third four-way valve 170, and the compressor 12.
The outdoor unit and the water source multi-split system can realize the functions of independently cooling water, independently heating water, cooling, heat recovery and heating water, heating water and cooling water.
It will be understood by those skilled in the art that the scope of the present disclosure is not limited to the specific embodiments described above, and that certain elements of the embodiments may be modified and substituted without departing from the spirit of the application. The scope of the application is limited by the appended claims.
Claims (20)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211254786.0A CN115597131A (en) | 2022-10-13 | 2022-10-13 | Outdoor unit and multi-functional water source multi-connection system |
| CN2022112539544 | 2022-10-13 | ||
| CN202211253954.4A CN115597130A (en) | 2022-10-13 | 2022-10-13 | Outdoor unit and multifunctional water source machine |
| CN2022112547860 | 2022-10-13 | ||
| PCT/CN2023/124529 WO2024078619A1 (en) | 2022-10-13 | 2023-10-13 | Outdoor unit and multifunctional water-source multi-split system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119137421A true CN119137421A (en) | 2024-12-13 |
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ID=90668867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202380037856.3A Pending CN119137421A (en) | 2022-10-13 | 2023-10-13 | Outdoor unit and multi-function water source multi-split system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN119137421A (en) |
| WO (1) | WO2024078619A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118836600B (en) * | 2024-09-24 | 2025-01-21 | 浙江思科制冷股份有限公司 | A four-pipe air conditioning system with stepless adjustment of heating capacity |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180304B (en) * | 2015-10-20 | 2018-03-13 | 青岛海信日立空调系统有限公司 | Air-conditioner outdoor unit, multifuctional air conditioning system and its method of work |
| CN108895567B (en) * | 2018-03-21 | 2020-05-08 | 青岛海信日立空调系统有限公司 | Outdoor unit, multi-split system, control method and device and computer storage medium |
| CN112524836B (en) * | 2020-12-17 | 2022-07-08 | 广东积微科技有限公司 | Three-pipe multi-split system and control method thereof |
| CN113007831B (en) * | 2021-04-16 | 2022-07-08 | 广东积微科技有限公司 | Three-pipe multi-online hot water system and control method thereof |
| CN113007830A (en) * | 2021-04-16 | 2021-06-22 | 广东积微科技有限公司 | Three-pipe multi-split system and control method thereof |
| CN113188268A (en) * | 2021-04-30 | 2021-07-30 | 广东积微科技有限公司 | Three-control multifunctional multi-split system |
| CN114777218B (en) * | 2022-03-28 | 2023-12-22 | 广东开利暖通空调股份有限公司 | Multi-split system and control method |
| CN115597130A (en) * | 2022-10-13 | 2023-01-13 | 青岛海信日立空调系统有限公司（Cn） | Outdoor unit and multifunctional water source machine |
| CN115597131A (en) * | 2022-10-13 | 2023-01-13 | 青岛海信日立空调系统有限公司（Cn） | Outdoor unit and multi-functional water source multi-connection system |
-
2023
- 2023-10-13 WO PCT/CN2023/124529 patent/WO2024078619A1/en not_active Ceased
- 2023-10-13 CN CN202380037856.3A patent/CN119137421A/en active Pending
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| WO2024078619A1 (en) | 2024-04-18 |
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