KR100926807B1 - Heat pump type heating and cooling unit that can produce both hot and cold water at the same time - Google Patents

Abstract

The present invention relates to a heat pump type heating and cooling device capable of simultaneously producing hot water and cold water, and can produce hot water at all times by using heat of a high temperature and high pressure refrigerant discharged from a compressor regardless of seasons, and an evaporator during heating. It aims to be able to produce low temperature water through.

The heat pump type air-conditioning apparatus capable of simultaneously producing hot water and cold water according to the present invention includes a compressor 1, a first heat exchanger (indoor) 4, an expansion valve 3, and a second heat exchanger (outdoor machine). (2) a four-way valve 5a and a reverse valve 5b for controlling the flow direction of the refrigerant, and a high temperature water storage unit for storing high temperature water therein; A low temperature water storage unit storing low temperature water therein; A high temperature water heat exchanger (10) through which a high temperature high pressure refrigerant discharged by the compressor flows; A high temperature water supply pipe (60) for exchanging water in the high temperature water storage unit with a refrigerant flowing through the high temperature water heat exchanger to return to the high temperature water storage unit; It is composed of a low temperature water supply pipe 60 for supplying heat to the low temperature water storage unit by heat exchange with the low temperature refrigerant flowing through the second heat exchanger.

Description

Heat pump air conditioning system capable of producing hot and cold water at the same time {HEAT PUMP AIR CONDITIONING SYSTEM THAT HIGH AND LOW TEMPERATURE WATER CAN BE PRODUCED AT THE SAME TIME}

The present invention relates to a heat pump type heating and cooling device, and more particularly, it is possible to always produce hot water by using heat of a high temperature and high pressure refrigerant discharged from a compressor regardless of season, and to produce low temperature water through an evaporator during heating. The present invention relates to a heat pump heating and cooling device capable of simultaneously producing hot water and cold water.

As is well known, the heat pump type heating and cooling unit utilizes the heat emitted from the high pressure side (condenser) during the heating season through the selective two-way flow of the refrigerant to provide heating and hot water, and the low pressure side (evaporator) during the cooling season. It is a system that can provide cold air by utilizing the absorption of ambient heat.

The heat pump type air-conditioning device is used in various structures according to its application environment, but it basically consists of four basic elements that form a refrigeration cycle such as a compressor, a condenser, an expansion valve, and an evaporator. It further includes a four-way valve to enable the selective use of the cooling or heating device by switching the flow direction of the refrigerant.

That is, as shown in FIG. 1, a conventional heat pump type heating and cooling apparatus includes a basic component such as a compressor 1, a condenser (outdoor unit) 2, an expansion valve 3, and an evaporator (indoor unit 4). A conventional cooling system, and in this cooling system, selectively switches ports between the expansion valve (3) and the evaporator (4) and between the compressor (1) and the condenser (2) to change the circulation direction of the refrigerant. It comprises a four-way valve and a reverse valve (5a.5b) provided for. Reference numeral 9 is an accumulator.

The heat pump type heating and cooling device configured as described above is utilized as a normal cooling device through a series of cooling cycles such as compression, condensation, expansion, and evaporation, and the refrigerant according to the operation of the four-way valve and the reverse valve 5a.5b Depending on the reverse circulation, it can be used as a heating device through a heat pump process such as evaporation, expansion, condensation and compression.

Looking at the heat pump type cold half system as described above in more detail, after cooling the refrigerant is evaporated in the evaporator (indoor; 4) undergoes an endothermic process to absorb the heat source around the heat dissipation in the condenser (outdoor unit; 2) At this time, if the endothermic amount of the evaporator 4 side is used, it can be utilized as a cooler. Alternatively, the flow direction of the refrigerant is reversed from the cooling time by the operation of the four-way valve and the reverse valves 5a and 5b. In the case of switching, since the cooling evaporator (indoor) 2 is used as a condenser and the condenser (outdoor unit; 4) is used as an evaporator, the amount of heat emitted to the evaporator (indoor) can be used as a heating device. will be. In other words, the endothermic amount of the low pressure side evaporator is used for freezing, and the amount of heat released from the high pressure side condenser is used for heating.

However, in the conventional general heat pump type heating and cooling device having the above configuration and operation principle, since no separate hot water supply means is provided, a boiler must be operated separately in order to receive hot water in summer or the season used as a cooler. There is a problem that is not efficient in terms of.

Moreover, even when the heat pump type air conditioner is utilized as a cooling device, although the amount of heat absorbed through the evaporator can be sufficiently reused, it is very uneconomical in terms of efficient use of energy since it is radiated and disposed of as it is through the condenser.

In order to solve this problem, when the heat pump type air conditioner is used as an air conditioner, the temperature of water can be increased by using a heat source of a refrigerant flowing through a pipe line between the first heat exchanger (indoor) and the second heat exchanger (outdoor). By providing a hot water supply device that can be, has been proposed a technology that can provide hot water in the summer or summer season used as a cooling system.

However, the conventional hot water supply device does not produce hot water supply hot water because it is a method of producing only hot water, requires a separate hot water supply device.

In addition, in the hot water supply system, since the hot water is directly taken from the heat of the first heat exchanger to produce hot water, there is a problem in that the heating efficiency of the room is lowered and the operation rate of the compressor is increased to solve the problem.

The present invention is to solve the above problems, and provides a heat pump type heating and cooling device capable of simultaneously producing hot water and cold water that can produce hot water and cold water while operating the device stably regardless of winter and summer. Its purpose is to.

Another object of the present invention is to provide hot water while stably operating a device by securing a heat source at a compressor side that supplies a high temperature refrigerant regardless of season without changing a temperature of a refrigerant of an indoor side heat exchanger for heating a room. I'm trying to supply.

Heat pump type air-conditioning apparatus capable of simultaneously producing hot water and cold water according to the present invention for achieving the above object is a compressor, a first heat exchanger (indoor), an expansion valve, a second heat exchanger (outdoor unit) A high temperature water storage unit configured to control a flow direction of the refrigerant, a four-way valve, a reverse valve, and high temperature water stored therein; A low temperature water storage unit storing low temperature water therein; A high temperature water heat exchanger through which a high temperature high pressure refrigerant discharged by the compressor flows; A hot water supply pipe configured to heat the water in the hot water storage unit with a refrigerant flowing through the hot water heat exchanger to return to the hot water storage unit; And a low temperature water supply pipe configured to heat the water inside the low temperature water storage unit with a low temperature refrigerant flowing through the second heat exchanger to supply the low temperature water storage unit.

According to the heat pump type heating and cooling device capable of simultaneously producing hot water and cold water according to the present invention, a high temperature heat source is secured from a high temperature refrigerant discharged from a compressor during indoor heating, and a low temperature heat source is provided from an outdoor heat exchanger (evaporator). It is possible to produce hot water and cold water at the same time to secure the need to provide a separate hot / cold water supply device. As a result, the utility of heat pumps can be increased, reducing costs and increasing utilization of limited space.

In addition, since the high temperature heat source is secured at the compressor side which discharges the high temperature refrigerant regardless of the season, the heat source is not taken out from the refrigerant of the heat exchanger, and thus the heat efficiency of the high temperature refrigerant passing through the heat exchanger can be supplied to the room without loss. It can increase.

As shown in FIG. 2, the heat pump type heating and cooling device capable of simultaneously producing hot water and cold water according to the present invention includes a compressor 1, a first heat exchanger (indoor) 4, an expansion valve 3, 2 heat exchanger (outdoor unit) (2), a four-way valve for controlling the flow direction of the refrigerant and reverse valves (5a, 5b), including a high temperature water heat exchanger (10) for the production of hot water, refrigerant The supply pipe 20, the high temperature water tank 30, the high temperature water supply pipe 40, the low temperature water tank 50, the low temperature water supply pipe 60 is further included.

The high temperature water heat exchanger 10 produces high temperature water by heat-exchanging the water compressed in the high temperature and high pressure in the compressor 1 and the water in the high temperature water tank. It may be provided with a structure. That is, the first flow path is connected to the refrigerant supply pipe 20 on the compressor 1 side, and the second flow path is connected to the hot water supply pipe 40.

The refrigerant supply pipe 20 is a first refrigerant pipe 21 for supplying the high temperature and high pressure refrigerant to the high temperature water heat exchanger 10 and a second refrigerant for supplying the refrigerant discharged from the high temperature water heat exchanger 10 to the refrigerant circulation line. It consists of a tube 22.

Both ends of the first refrigerant pipe 21 are connected to the discharge side of the compressor 1 and the inlet side of the high temperature water heat exchanger 10, and the second refrigerant pipe 22 has both ends of the compressor 1 and the reverse displacement 5b. And the discharge side of the hot water heat exchanger 10.

The hot water tank 30 stores hot water therein. The high temperature water stored in the high temperature water tank 30 may be supplied through the high temperature water supply pipe 40, and a takeout part 31 and a recovery part 32 may be provided to supply the high temperature water to a destination.

The high temperature water supply pipe 40 heat-exchanges the water stored in the high temperature water tank 30 with a high temperature high pressure refrigerant, and supplies a first high temperature water supply pipe for supplying water in the high temperature water tank 30 to the high temperature water heat exchanger 10 ( 41) and a second high temperature water supply pipe 42 for storing the high temperature water heat exchanged with the high temperature high pressure refrigerant while passing through the high temperature water heat exchanger 10 in the high temperature water tank 30.

The low temperature water tank 50 stores the low temperature water therein. The low temperature water is stored in the low temperature water tank 50 through the low temperature water supply pipe 60, and a takeout unit 51 and a recovery unit 52 may be provided to supply the low temperature water to a destination.

The low temperature water supply pipe 60 exchanges heat with the refrigerant via the first low temperature water supply pipe 61 and the second heat exchanger 2 for exchanging water in the low temperature water tank 50 with the refrigerant of the second heat exchanger 2. And a second low temperature water supply pipe 62 for storing the low temperature water in the low temperature water tank 50.

In order to make the water of the hot water tank 30 and the water in the cold water tank 50 into hot water or cold water only when necessary, pumps 43 are respectively provided to the first high temperature water supply pipe 41 and the first low temperature water supply pipe 61. 63) are installed.

In the drawings, reference numeral C denotes a controller for automatically adjusting the quantity and the on / off function according to the refrigerant pressure of the pumps 43 and 63.

The action of the heat pump type heating and cooling device capable of simultaneously producing hot water and cold water according to the present invention configured as described above is as follows.

1. When heating.

The refrigerant compressed by the high temperature and high pressure in the compressor 1 passes through the hot water heat exchanger 10. In this process, the water in the hot water tank 30 passes through the first high temperature water supply pipe 41. 10 is supplied to the high-temperature water heat exchanger (10) to exchange heat with the refrigerant is raised to a high temperature and then stored in the hot water tank 30 along the second high temperature water supply pipe (42).

The refrigerant exiting the hot water heat exchanger 10 passes through the first heat exchanger (condenser) 4, and at this time, the air is blown by the operation of a blower fan (not shown) and passes through the first heat exchanger 4. The room is heated by taking heat from the refrigerant to be supplied to the room.

The refrigerant passing through the first heat exchanger 4 is reduced in pressure while passing through the expansion valve 3, and then is supplied to the second heat exchanger (evaporator) 2 after the temperature is lowered. The water in the low temperature water tank 50 is changed into low temperature water by heat exchange with the refrigerant of the second heat exchanger 2 along the first low temperature water supply pipe 61.

The low temperature water is stored in the low temperature water tank 50 through the second low temperature water supply pipe 62.

2. When cooling.

The refrigerant compressed by the high temperature and high pressure in the compressor 1 passes through the hot water heat exchanger 10. In this process, the water in the hot water tank 30 passes through the first high temperature water supply pipe 41. 10 is supplied to the high-temperature water heat exchanger (10) to exchange heat with the refrigerant is raised to a high temperature and then stored in the hot water tank 30 along the second high temperature water supply pipe (42).

The refrigerant exiting the hot water heat exchanger 10 passes through the second heat exchanger (condenser) 2. During cooling, the pump 63 of the low temperature water supply pipe 60 stops operation so that the water in the low temperature water tank 50 does not heat exchange with the refrigerant of the second heat exchanger 2.

The refrigerant passing through the second heat exchanger 2 is reduced in pressure while passing through the expansion valve 3, and is supplied to the first heat exchanger (evaporator) 4 after the temperature is lowered. The blower (not shown) on the side of the first heat exchanger 4 is forced to blow air to exchange heat with the low temperature refrigerant of the first heat exchanger 4, and then the air is cooled to the room.

3 shows another example of a hot water tank and a cold water tank applied to a heat pump type air-conditioning apparatus capable of simultaneously producing hot water and cold water according to the present invention. In the above example, the hot water tank 30 and the cold water are shown. The water tank 50 has been described as a single item, hereinafter, the tank 70 having the high temperature water storage unit 71 and the low temperature water storage unit 72 will be described as an example.

The tank 70 is partitioned into a vertical space by a partition 73 therein. The upper space is the hot water storage 71 and the lower space is the cold water storage 72.

Therefore, the hot water supply pipe 40 communicates with the high temperature water storage unit 71, and the low temperature water supply pipe 60 communicates with the low temperature water storage unit 72.

One or more through holes 73a are formed in the partition 73 so that the low temperature water stored in the low temperature water storage unit 72 and the high temperature water stored in the high temperature water storage unit 71 exchange heat with each other.

As described above, even when the tank 70 has a single structure having the high temperature water storage unit 71 and the low temperature water storage unit 72, the production process of the high temperature water and the low temperature water is the same as the above-described process, and thus a detailed description thereof will be omitted.

1 is a block diagram of a heat pump system according to the prior art.

Figure 2 is a block diagram of a heat pump type heating and cooling device capable of simultaneously producing hot water and cold water according to the present invention.

Figure 3 is another illustration of a tank applied to a heat pump type heating and cooling device capable of simultaneously producing hot water and cold water according to the present invention.

<Description of Signs for Main Parts of Drawings>

10: hot water heat exchanger, 20: refrigerant supply pipe

30: hot water tank, 40: hot water supply pipe

50: low temperature water tank, 60: low temperature water supply pipe

70 tank, 71 hot water storage unit

72: cold water storage, 73: partition wall

Claims (4)

The room includes a compressor (1), a first heat exchanger (4), an expansion valve (3), a second heat exchanger (2), a four-way valve (5a) and a reverse valve (5b) for controlling the flow direction of the refrigerant. In the heat pump type heating and cooling device for cooling or heating A tank 70 having a high temperature water storage unit and a low temperature water storage unit respectively formed at an upper and lower sides thereof through at least one through-hole partition wall; A high temperature water heat exchanger (10) connected between the discharge side of the compressor and the reverse ground, and flowing with a high temperature and high pressure refrigerant discharged by the compressor; A first high temperature water supply pipe 42 for supplying water in the high temperature water storage unit to the high temperature water heat exchanger and a second high temperature water supply pipe 42 for storing high temperature water passing through the high temperature water heat exchanger in the high temperature water storage unit; Hot water supply pipe 40 made of; A first low temperature water supply pipe 61 for exchanging water in the low temperature water storage unit with the refrigerant of the second heat exchanger and a second temperature for storing low temperature water heat exchanged with the refrigerant of the second heat exchanger in the low temperature water storage unit; A low temperature water supply pipe 60 formed of a low temperature water supply pipe 62; Pumps 43 and 63 installed in the first high temperature water supply pipe and the first low temperature water supply pipe, respectively; Including a controller (C) for controlling the quantity of water through the pump in accordance with the refrigerant pressure, and also controls the on / off of the pump, to produce hot water during the heating and cooling of the heat pump type air conditioning system, Heat pump type heating and cooling device capable of simultaneously producing hot water and cold water, characterized in that the production of low temperature water at the same time. delete delete delete

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