CN104654665B - Outdoor unit module of multi-split system and multi-split system with outdoor unit module - Google Patents
Outdoor unit module of multi-split system and multi-split system with outdoor unit module Download PDFInfo
- Publication number
- CN104654665B CN104654665B CN201310604293.XA CN201310604293A CN104654665B CN 104654665 B CN104654665 B CN 104654665B CN 201310604293 A CN201310604293 A CN 201310604293A CN 104654665 B CN104654665 B CN 104654665B
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- Prior art keywords
- outdoor unit
- oil
- unit modules
- line system
- heat exchanger
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- 239000003507 refrigerant Substances 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 230000008014 freezing Effects 0.000 claims description 26
- 238000007710 freezing Methods 0.000 claims description 26
- 239000000446 fuel Substances 0.000 claims description 21
- 239000002826 coolant Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 137
- 239000010726 refrigerant oil Substances 0.000 abstract 1
- 235000003642 hunger Nutrition 0.000 description 10
- 230000037351 starvation Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000010725 compressor oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides an outdoor unit module of a multi-split system and the multi-split system with the outdoor unit module. Wherein, the off-premises station module of many online systems includes: an outdoor heat exchanger; the liquid refrigerant circulation branch pipe is connected with the outdoor unit heat exchanger; a compressor; the refrigerant outlet of the oil separator is connected with the outdoor unit heat exchanger, the discharge port of the compressor is connected with the refrigerant inlet of the oil separator, the outdoor unit module further comprises an oil equalizing pipe, the first end of the oil equalizing pipe is connected with the refrigerant oil outlet of the oil separator, and the second end of the oil equalizing pipe is connected to the liquid refrigerant circulation branch pipe. The technical scheme of the invention realizes oil equalization by utilizing the pressure difference of the oil equalizing device, and is simpler in structure compared with the prior art.
Description
Technical field
The present invention relates to changing device technical field, in particular to a kind of outdoor unit modules of multiple on-line system and
There is its multiple on-line system.
Background technology
At present, in multiple on-line system, during compressor operating, some oil meeting must be freezed continuously from cylinder
In be forced out together with cold-producing medium and enter in oil eliminator, then average mark oil is completed by oil-balancing system.Multiple on-line system refers to
It is to have one or more outdoor unit modules to connect one or more indoor set modules.Outdoor unit modules mainly include compressor, oil
Separator, outdoor unit heat exchanger and necessary connecting pipe, indoor set module mainly includes indoor set heat exchanger.Off-premises station mould
Block passes through drain pipeline and guide pipeline is connected with indoor set module.When multiple outdoor unit modules are arranged in parallel, multiple indoor sets
During wired in parallel setting, the oil balance between multiple outdoor unit modules relies on oil-balancing system to realize, when freezing oil can not continuously return
Return oil starvation outdoor unit modules when, the pasta of the compressor in the outdoor unit modules being bound to cause oil starvation declines, until freezing
Oil cake exhausts, and compressor oil starvation and burns phenomenon.So ensureing that freezing oil reliability, average each outdoor unit modules that are assigned to are many
One of most important problem in designs of on-line system.At present, commonly used way is, for multiplex system, when multiple
When outdoor unit modules are arranged in parallel, draw an oil balance tube from the oil eliminator bottom of each off-premises station, each oil balance tube is mutual again
It is connected, form a closed oil circuit, for the freezing oil in system is evenly distributed in the off-premises station of oil starvation, each oil balance
Guan Shangxu arranges equal fuel tap, check valve, filter and capillary tube.Said structure is complicated, additionally, each oil equalizing pipe belongs to external side
Formula is that is to say, that be arranged between each outdoor unit modules, rather than is located at the inside of each outdoor unit modules, because of project installation and
During operation, the external factor such as personnel and nature, the outdoor unit modules of multiple on-line system are caused damage, such as external oil equalizing pipe holds
It is vulnerable to the collision of personnel, and cause system to reveal etc..
Content of the invention
The present invention is intended to provide a kind of structure is simple and has all outdoor unit modules of multiple on-line system of oil effect and tool
There is its multiple on-line system.
To achieve these goals, according to an aspect of the invention, it is provided a kind of off-premises station mould of multiple on-line system
Block, comprising: outdoor unit heat exchanger；Liquid refrigerants circulation arm, is connected with outdoor unit heat exchanger；Compressor；Oil eliminator, oil
The refrigerant exit of separator is connected with outdoor unit heat exchanger, and the outlet of compressor is connected with the refrigerant import of oil eliminator,
Outdoor unit modules also include oil equalizing pipe, and the first end of oil equalizing pipe is connected with the freezing oil export of oil eliminator, and the second of oil equalizing pipe
End is connected on liquid refrigerants circulation arm.
Further, the freezing oil export of oil eliminator is located at the lower end of this oil eliminator.
Further, oil equalizing pipe is provided with equal fuel tap.
Further, liquid refrigerants circulation arm is provided with electric expansion valve, electric expansion valve is located at the of oil equalizing pipe
Between two ends and outdoor unit heat exchanger.
Further, oil equalizing pipe is provided with and only allows fluid to circulate the of arm flowing to liquid refrigerants from oil eliminator
One check valve.
Further, the outdoor unit modules of the multiple on-line system of the present invention also include: subcooler, are arranged on liquid refrigerant stream
On logical arm, subcooler is located between the second end and the outdoor unit heat exchanger of oil equalizing pipe.
Further, the outdoor unit modules of the multiple on-line system of the present invention also include: oil fuel tube, one end is connected to separating of oil
On device, oil fuel tube is provided with fuel feeding valve.
Further, the outdoor unit modules of the multiple on-line system of the present invention also include: only allow conducting from off-premises station heat exchange
Second check valve of the liquid refrigerants that device flows out, the second check valve is connected and and electric expansion valve with liquid refrigerants circulation arm
In parallel.
Further compressor and oil eliminator are multiple, and multiple compressors are corresponded even with multiple oil eliminators
Connect, oil equalizing pipe is connected with multiple oil eliminators respectively, oil equalizing pipe is provided with oil balancer.
According to a further aspect in the invention, there is provided a kind of multiple on-line system, comprising: the multiple off-premises station moulds being arranged in parallel
Block；The multiple indoor set modules being arranged in parallel, arbitrary indoor set module passes through liquid refrigerants runner pipe and gaseous coolant circulation
Pipe is connected with arbitrary outdoor unit modules, and outdoor unit modules are the outdoor unit modules of above-mentioned multiple on-line system.
Application technical scheme, when outdoor unit modules are in operation, compressor is in starting state, in each oil
Quick formation high pressure in device, oil eliminator is connected by oil equalizing pipe and liquid refrigerants circulation arm, by multiple on-line system
The formed pressure difference of outdoor unit modules itself, by the freezing oil pressure in oil eliminator enter liquid refrigerants circulation arm in, and with
The liquid refrigerant stream that liquid refrigerants circulates in arm enters the indoor set heat exchanger of indoor set module, due to the outdoor unit modules of oil starvation
Pressure smaller, phase is fitted on by freezing oil by the connecting line of indoor set heat exchanger and compressor in each outdoor unit modules
Go (that is freezing oil being fitted on the outdoor unit modules of oil starvation relatively) in the compressor of oil starvation, thus playing all oil effects
Really.As the above analysis, the outdoor unit modules of the multiple on-line system of the present invention utilize the pressure difference of itself to realize all oil, structure
Upper hinge structure is fairly simple.
Brief description
The Figure of description constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrate for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment of the outdoor unit modules of the multiple on-line system according to the present invention；And
Fig. 2 shows the structural representation of the embodiment of the multiple on-line system according to the present invention.
Wherein, the accompanying drawing of above-mentioned in figure is as follows:
1st, outdoor unit modules；2nd, indoor set module；3rd, liquid refrigerants runner pipe；4th, gaseous coolant runner pipe；10th, off-premises station
Heat exchanger；11st, liquid refrigerants circulation arm；12nd, electric expansion valve；13rd, subcooler；14th, the second check valve；15th, the first filtration
Device；16th, the second filter；17th, radiator fan；18th, cross valve；21st, compressor；22nd, oil eliminator；23rd, oil equalizing pipe；24th, equal
Fuel tap；25th, the first check valve；26th, oil fuel tube；27th, fuel feeding valve.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment include outdoor unit heat exchanger 10, liquid refrigerants
Circulation arm 11, compressor 21, oil eliminator 22 and oil equalizing pipe 23.Liquid refrigerants circulation arm 11 and outdoor unit heat exchanger 10 phase
Connect.Liquid refrigerants circulation arm 11 belongs to the liquid refrigerants runner pipe that outdoor unit heat exchanger 10 is connected with indoor set heat exchanger
A part, outdoor unit heat exchanger 10 and indoor set heat exchanger direct liquid refrigerants runner pipe only circulate the coolant after liquefaction,
During refrigeration, outdoor unit heat exchanger 10 serves as condenser, and indoor set heat exchanger serves as vaporizer；When heating, outdoor unit heat exchanger
10 serve as vaporizer, and indoor set heat exchanger serves as condenser.The refrigerant exit of oil eliminator 22 is connected with outdoor unit heat exchanger 10
Connect, the outlet of compressor 21 is connected with the refrigerant import of oil eliminator 22, the first end of oil equalizing pipe 23 and oil eliminator 22
Freezing oil export connects, and the second end of oil equalizing pipe 23 is connected on liquid refrigerants circulation arm 11.Compressor 21 and oil eliminator
It can also be multiple that 22 quantity can be one, the quantity of the quantity of oil equalizing pipe 23 and oil eliminator 22 can equal can also
Unequal, oil eliminator 22 is connected with least one compressor 21, and multiple compressors 21 are connected in parallel to each other setting, multiple oil eliminators
22 are connected in parallel to each other setting.Preferably, it is connected with cross valve 18 between oil eliminator 22 and outdoor unit heat exchanger 10.
The outdoor unit modules of the multiple on-line system of application the present embodiment, when outdoor unit modules are in operation, compressor is in
Starting state, quick formation high pressure in each oil eliminator 22, oil eliminator 22 passes through oil equalizing pipe 23 and liquid refrigerants circulation
Pipe 11 is connected, by the formed pressure difference of the outdoor unit modules of multiple on-line system itself, by the freezing oil in oil eliminator 22
In press-in liquid refrigerants circulation arm 11, and enter the room of indoor set module with the liquid refrigerant stream that liquid refrigerants circulates in arm 11
In interior machine heat exchanger, because the pressure of the outdoor unit modules of oil starvation is smaller, by indoor set heat exchanger and each outdoor unit modules
The connecting line of middle compressor 21 freezing oil is fitted in the compressor 21 of relative oil starvation and goes (that is to join freezing oil
Outdoor unit modules to oil starvation relatively), thus playing all oily effect.As the above analysis, the multiple on-line system of the present embodiment
Outdoor unit modules utilize itself pressure difference realize all oil, in structure, hinge structure is fairly simple.Additionally, the present embodiment
The oil equalizing pipe 23 of the outdoor unit modules of multiple on-line system belong to built-in mode, oil equalizing pipe 23 can be prevented effectively from and be subject to personnel
Collision, and topic situations such as cause system to reveal.
In the present embodiment, the freezing oil export of oil eliminator 22 is located at the lower end of this oil eliminator 22.In such manner, it is possible to more
Easily freezing oil pressure in oil eliminator 22 is entered in liquid refrigerants circulation arm 11, and in oil eliminator 22 freezing oil all have can
Can be pressed in liquid refrigerants circulation arm 11, improve the utilization rate of freezing oil.
As shown in figure 1, in the present embodiment, oil equalizing pipe 23 is provided with equal fuel tap 24.All fuel tap 24 is used for realizing equal oil
The break-make of pipe 23.After outdoor unit modules receive all oil orders, equal fuel tap 24 will be in opening, now, due to equal fuel tap 24
Unlatching, oil eliminator 22 constitutes path with liquid refrigerants circulation arm 11, and freezing oil can smoothly enter liquid refrigerant stream
In logical arm 11, and flow to indoor set heat exchanger with the liquid refrigerants in liquid refrigerants circulation arm 11.
As shown in figure 1, in the present embodiment, liquid refrigerants circulation arm 11 is provided with electric expansion valve 12, electronics is swollen
Swollen valve 12 is located between the second end of oil equalizing pipe 23 and outdoor unit heat exchanger 10, in parallel and freeze in multiple outdoor unit modules
When, the second end of oil equalizing pipe 23 is located at the downstream of electric expansion valve 12, and therefore, whether outdoor unit modules are to liquid refrigerants circulation
Pipe 11 provides freezing oil can independently carry out, and is not affected by electric expansion valve 12 it is ensured that providing more enough freezing oil.
As shown in figure 1, in the present embodiment, oil equalizing pipe 23 is provided with and only allows fluid cold to liquid from oil eliminator 22
First check valve 25 of matchmaker's circulation arm 11 flowing.When multiple outdoor unit modules are in parallel, the first check valve 25 is prevented from when certain
When one outdoor unit modules are out of service, the liquid refrigerants that liquid refrigerants circulates in arm 11 is back to the oil of this outdoor unit modules
In device 22, impact is freezed and heating effect, causes the fluctuation of ability.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment also include subcooler 13, subcooler 13 is arranged
Circulate on arm 11 in liquid refrigerants, subcooler 13 is located between the second end and the outdoor unit heat exchanger 10 of oil equalizing pipe 23.Supercool
Device 13 can adjust the degree of supercooling of liquid refrigerants, improves the whole system that outdoor unit modules are located of the multiple on-line system of the present embodiment
The refrigeration of system and heating efficiency.
As shown in figure 1, the outdoor unit modules in the multiple on-line system of the present embodiment also include oil fuel tube 26, oil fuel tube 26
One end is connected on oil eliminator 22, and oil fuel tube 26 is provided with fuel feeding valve 27.Can be to separating of oil by arranging oil fuel tube 26
Device 22 provides extra freezing oil, lacks freezing oil with the outdoor unit modules avoiding whole multiple on-line system.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment also include only allowing conducting to change from off-premises station
Second check valve 14 of the liquid refrigerants that hot device 10 flows out, the second check valve 14 connect with liquid refrigerants circulation arm 11 and with
Electric expansion valve 12 is in parallel.Second check valve 14 is prevented from liquid refrigerants and is back in outdoor unit heat exchanger 10, affects this reality
Apply the efficiency of the outdoor unit modules of the multiple on-line system of example.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment also include the first filter 15, the first filtration
Device 15 is arranged on liquid refrigerants circulation arm 11, the first filter 15 be located at electric expansion valve 12 and outdoor unit heat exchanger 10 it
Between.First filter 15 can filter to the liquid refrigerants flowing out in outdoor unit heat exchanger 10.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment also include the second filter 16, the second filtration
Device 16 is arranged on liquid refrigerants circulation arm 11, the second end of oil equalizing pipe 23 be located at the second filter 16 and subcooler 13 it
Between.Second filter 16 can filter to the liquid refrigerants flowing out in subcooler 13.
As shown in figure 1, the outdoor unit modules of the multiple on-line system of the present embodiment also include radiator fan 17, radiator fan 17
It is correspondingly arranged with outdoor unit heat exchanger 10.Quickly the temperature of outdoor unit heat exchanger 10 can be adjusted by radiator fan 17
Whole, make the temperature of the temperature of outdoor unit heat exchanger 10 closer to outside air.
In the present embodiment, compressor 21 and oil eliminator 22 are multiple, multiple oil eliminators 22 and multiple compressors
21 connect one to one, and oil equalizing pipe 23 is connected with multiple oil eliminators 22 respectively, and so, the freezing in multiple oil eliminators 22 is oily
It is pooled in oil equalizing pipe 23.Oil balancer (not shown) is provided with oil equalizing pipe 23.It is pooled to the freezing oil in oil equalizing pipe 23
Liquid refrigerants circulation arm 11, oil equalizing pipe 23 preferably only is uniformly and stably flowed in the presence of oil balancer.
As shown in Fig. 2 present invention also provides a kind of multiple on-line system, the multiple on-line system of the present embodiment includes parallel connection and sets
The multiple outdoor unit modules 1 put and the multiple outdoor unit modules 1 being arranged in parallel.Arbitrary indoor set module 2 passes through liquid refrigerants
Runner pipe 3(solid line) and gaseous coolant runner pipe 4(dotted line) be connected with arbitrary outdoor unit modules 1, outdoor unit modules 1 are above-mentioned
The outdoor unit modules of the multiple on-line system of embodiment.The multiple on-line system of the present embodiment structure on the basis of there is all oily effect
Simpler.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of outdoor unit modules of multiple on-line system, comprising:
Outdoor unit heat exchanger (10)；
Liquid refrigerants circulation arm (11), is connected with described outdoor unit heat exchanger (10)；
Compressor (21)；
Oil eliminator (22), the refrigerant exit of described oil eliminator (22) is connected with described outdoor unit heat exchanger (10), described
The outlet of compressor (21) is connected with the refrigerant import of described oil eliminator (22),
It is characterized in that, described outdoor unit modules also include oil equalizing pipe (23), the first end of described oil equalizing pipe (23) and described oil
The freezing oil export of separator (22) connects, and the second end of described oil equalizing pipe (23) is connected to described liquid refrigerants circulation arm
(11) on.
2. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that described oil eliminator (22)
Freezing oil export is located at the lower end of this oil eliminator (22).
3. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that set on described oil equalizing pipe (23)
It is equipped with equal fuel tap (24).
4. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that the circulation of described liquid refrigerants is propped up
It is provided with electric expansion valve (12), described electric expansion valve (12) is located at the second end and the institute of described oil equalizing pipe (23) on pipe (11)
State between outdoor unit heat exchanger (10).
5. the outdoor unit modules of multiple on-line system according to claim 4 are it is characterised in that set on described oil equalizing pipe (23)
It is equipped with the first check valve (25) only allowing fluid to flow to liquid refrigerants circulation arm (11) from oil eliminator (22).
6. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that also include:
Subcooler (13), is arranged on described liquid refrigerants circulation arm (11), described subcooler (13) is located at described oil equalizing pipe
(23) between the second end and described outdoor unit heat exchanger (10).
7. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that also include:
Oil fuel tube (26), one end is connected on described oil eliminator (22), and described oil fuel tube (26) is provided with fuel feeding valve (27).
8. the outdoor unit modules of multiple on-line system according to claim 4 are it is characterised in that also include:
Only allow to turn on second check valve (14) of the liquid refrigerants flowing out from described outdoor unit heat exchanger (10), described second is single
Connect and in parallel with described electric expansion valve (12) to valve (14) with described liquid refrigerants circulation arm (11).
9. the outdoor unit modules of multiple on-line system according to claim 1 are it is characterised in that described compressor (21) and institute
State oil eliminator (22) and be multiple, the plurality of compressor (21) and the plurality of oil eliminator (22) connect one to one,
Described oil equalizing pipe (23) is connected with the plurality of oil eliminator (22) respectively, and described oil equalizing pipe (23) is provided with oil balancer.
10. a kind of multiple on-line system, comprising:
The multiple outdoor unit modules (1) being arranged in parallel；
The multiple indoor set modules (2) being arranged in parallel, arbitrary described indoor set module (2) pass through liquid refrigerants runner pipe (3) with
And gaseous coolant runner pipe (4) is connected it is characterised in that described outdoor unit modules (1) are with arbitrary described outdoor unit modules (1)
The outdoor unit modules of the multiple on-line system any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604293.XA CN104654665B (en) | 2013-11-25 | 2013-11-25 | Outdoor unit module of multi-split system and multi-split system with outdoor unit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604293.XA CN104654665B (en) | 2013-11-25 | 2013-11-25 | Outdoor unit module of multi-split system and multi-split system with outdoor unit module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104654665A CN104654665A (en) | 2015-05-27 |
| CN104654665B true CN104654665B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310604293.XA Active CN104654665B (en) | 2013-11-25 | 2013-11-25 | Outdoor unit module of multi-split system and multi-split system with outdoor unit module |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106765688B (en) * | 2016-11-15 | 2022-08-02 | 珠海格力电器股份有限公司 | Outdoor unit of heat recovery multi-split air conditioner system and heat recovery multi-split air conditioner system with outdoor unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5321956A (en) * | 1993-05-26 | 1994-06-21 | Kemp Industrial Refrigeration, Inc. | Oil management and removal system for a refrigeration installation |
| CN1131458A (en) * | 1994-06-29 | 1996-09-18 | 达金工业株式会社 | Refrigerator |
| JPH10232056A (en) * | 1997-02-20 | 1998-09-02 | Hitachi Ltd | Air conditioner |
| US5937659A (en) * | 1998-04-09 | 1999-08-17 | Carrier Corporation | Oil viscosity control method/system for a refrigeration unit |
| WO2006126396A1 (en) * | 2005-05-24 | 2006-11-30 | Matsushita Electric Industrial Co., Ltd. | Refrigeration cycle device |
| CN101646908A (en) * | 2007-03-27 | 2010-02-10 | 大金工业株式会社 | Refrigerating device |
| CN203586613U (en) * | 2013-11-25 | 2014-05-07 | 珠海格力电器股份有限公司 | Outdoor unit module of multi-split system and multi-split system with outdoor unit module |
-
2013
- 2013-11-25 CN CN201310604293.XA patent/CN104654665B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5321956A (en) * | 1993-05-26 | 1994-06-21 | Kemp Industrial Refrigeration, Inc. | Oil management and removal system for a refrigeration installation |
| CN1131458A (en) * | 1994-06-29 | 1996-09-18 | 达金工业株式会社 | Refrigerator |
| JPH10232056A (en) * | 1997-02-20 | 1998-09-02 | Hitachi Ltd | Air conditioner |
| US5937659A (en) * | 1998-04-09 | 1999-08-17 | Carrier Corporation | Oil viscosity control method/system for a refrigeration unit |
| WO2006126396A1 (en) * | 2005-05-24 | 2006-11-30 | Matsushita Electric Industrial Co., Ltd. | Refrigeration cycle device |
| CN101646908A (en) * | 2007-03-27 | 2010-02-10 | 大金工业株式会社 | Refrigerating device |
| CN203586613U (en) * | 2013-11-25 | 2014-05-07 | 珠海格力电器股份有限公司 | Outdoor unit module of multi-split system and multi-split system with outdoor unit module |
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|---|---|
| CN104654665A (en) | 2015-05-27 |
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