CN1173139C - Refrigerant loop tank - Google Patents
Refrigerant loop tank Download PDFInfo
- Publication number
- CN1173139C CN1173139C CNB021315442A CN02131544A CN1173139C CN 1173139 C CN1173139 C CN 1173139C CN B021315442 A CNB021315442 A CN B021315442A CN 02131544 A CN02131544 A CN 02131544A CN 1173139 C CN1173139 C CN 1173139C
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- bypass pipe
- regulating tank
- heat exchanger
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0415—Refrigeration circuit bypassing means for the receiver
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/16—Receivers
-
- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
To solve the problem of insufficiency of a refrigerating capacity or a rise of a high pressure caused by that the composition of a refrigerant in the whole of a refrigerant circuit deviates from the standard, since an easy-to- condense component of a refrigerant liquid is stored first in a tank for regulating the amount of the refrigerant wherein a surplus of the refrigerant brought about in a heating operation is stored, in a refrigerant cycle of a heat pump using a mixed refrigerant. The refrigerant is returned to the refrigerant circuit through bypass piping 9 having a check valve 10, from the tank 8 for regulating the amount of the refrigerant which is connected to refrigerant piping between a expansion valve 4 and a heat exchanger 5 through bypass piping 7.
Description
Technical field
The present invention relates to use the control of refrigerant amount of the cooling cycle system of mix refrigerant.
Conventional art
As being used for heat pump, by traditional cooling cycle system that compressor, cross valve, heat exchanger, expansion valve, reservoir constitute, the spy opens the described form of flat 7-120119 communique and is shown in Fig. 2.In Fig. 2, the 101st, compressor, the 102nd, when switching refrigerating operaton and the cross valve that flows of the cold-producing medium during heating operation, the 103rd, indoor heat exchanger, 104～107th, check valve, the 108th, contain the liquid device, the 109th, expansion valve, the 110th, outdoor heat exchanger, the 111st, indoor fan, the 112nd, outdoor fan.
Below operation principle is described.
When refrigerating operaton, compressed cold-producing medium in compressor 101, flow to outdoor heat exchanger 110 by cross valve 102, and sequential flow crosses check valve 104, contains liquid device 108, expansion valve 109, check valve 107, indoor heat exchanger 103, return compressor 101 by cross valve 102 again.
Again, when heating operation, compressed cold-producing medium flows to indoor heat exchanger 103 from compressor 101 by cross valve 102, and sequential flow crosses check valve 105, contains liquid device 108, expansion valve 109, check valve 106, outdoor heat exchanger 110, returns compressor 101 by cross valve 102 again.
At this, if the essential cold-producing medium of refrigerant loop when relatively moving, because general indoor heat exchanger 103 1 sides compare with outdoor heat exchanger 110, condensation efficiency height to cold-producing medium, so, the internal volume of the part that cold-producing medium can be passed through designs forr a short time, and the essential cold-producing medium of the side during heating operation lacks in the time of can be than refrigerating operaton.
And near the Sheng liquid device 108 that designs previously of expansion valve 109, by retaining refrigerant liquid, the refrigerant amount of necessity is poor when regulating refrigerating operaton and during heating operation.
At this, if the cooling cycle system of the refrigerant loop of Fig. 2 is represented with the p-h line chart, then as shown in Figure 3.In the figure, between the a-b compression travel of compressor 101, between the b-c condensation stroke of heat exchanger 103 or 110, between the c-d expansion stroke of expansion valve 109, between the d-a evaporation stroke of heat exchanger 110 or 103.
At this moment, because mix existence with refrigerant gas, so like that, the cold-producing medium of containing liquid device inside is in the saturated liquid state shown in the some c of Fig. 3 at the Sheng liquid device 108 inner refrigerant liquid of this refrigerant loop.This saturated liquid cold-producing medium, after going out to contain liquid device 108, though unillustrated liquid line or filter, liquid line solenoid valve, expansion valve 109 inflow evaporators among the process figure, but because not by supercooling, so, when on liquid line etc., having resistance, be in refrigerant liquid easily and mix the flash gas state that exists with refrigerant gas.When cold-producing medium is in the flash gas state, obviously reduce because flow through the refrigerant amount of expansion valve 109, so can not obtain set refrigerating capacity.
As the method that solves, have on the refrigerant piping of the liquid outlet side of heat exchanger by bypass pipe design refrigerant amount regulating tank, deposit the method for temporary transient remaining refrigerant liquid in.
Fig. 4 is an example of the basic refrigerant loop of another traditional air cooling heat pump air-cooler.
In the figure, the 201st, compressor, the 202nd, the cross valve that flows of switching cold-producing medium during the changes in temperature operation, the 203rd, air-side heat exchanger, the 204th, expansion valve, the 205th, water-side heat, the 206th, reservoir, the 208th, by the refrigerant amount regulating tank of bypass pipe 207 designs on the refrigerant piping of the liquid outlet side of water-side heat 205.
Below, the operation principle of this refrigerant loop is described.
During refrigerating operaton, compressed cold-producing medium in compressor 201 along air-side heat exchanger 203, expansion valve 204, water-side heat 205, returns compressor 201 by cross valve 202 through reservoir 206 by cross valve 202 again.
Again, during heating operation, compressed cold-producing medium in compressor 201 along water-side heat 205, expansion valve 204, air-side heat exchanger 203, returns compressor 201 by cross valve 202 through reservoir 206 by cross valve 202 again.
At this, if essential refrigerant amount in refrigerant loop during refrigerating operaton and during heating operation relatively, because a side of water-side heat 205 compares with air-side heat exchanger 203, condensation efficiency height to cold-producing medium, so, can design the internal volume of the refrigerant side of heat exchanger littler, the side during heating operation lacks when essential cold-producing medium can be than refrigerating operaton in refrigerant loop, the refrigerant liquid of remainder flows into refrigerant amount regulating tank 208 by bypass pipe 207 and stores.At this moment, cooled dose of liquid is full of in the refrigerant amount regulating tank 208.
Again, behind heating operation, when switching to refrigerating operaton, specifically conversely, because the essential short of refrigerant of refrigerant loop, so the refrigerant liquid that is stored in the refrigerant amount regulating tank 208 flows into refrigerant loop, replenishes insufficient section.At this moment, has only refrigerant gas in the refrigerant amount regulating tank 208.
That is, in this refrigerant loop, because essential amount is lacked when essential refrigerant amount is than refrigerating operaton when heating operation, so remainder flows into refrigerant amount regulating tank 208.Otherwise, short of refrigerant during refrigerating operaton, then the cold-producing medium of refrigerant amount regulating tank 208 outflows replenishes insufficient section.
In addition, the capacity of refrigerant amount regulating tank 208, the residual refrigerant amount of liquid when being decided by heating operation.
But, in above-mentioned method, using the mix refrigerant that for example HFC134a, HFC32, HFC125 is mixed in certain proportion: in the HFC407C, have following such problem.
At first, the situation to beginning heating under the state that leaves refrigerant liquid at reservoir 206 internal memories describes.
At stopping period, because remained in the refrigerant liquid in the reservoir 206, be many compositions of the HFC134a of easy condensation in its composition, cold-producing medium in the refrigerant loop except reservoir 206, be HFC32 and the many compositions of HFC125 as residual composition, so when the beginning heating operation, the residual refrigerant liquid that flows into refrigerant amount regulating tank 208 also is HFC32 and the many compositions of HFC125.
Its result, in the refrigerant loop except that refrigerant amount regulating tank 208, HFC32 and HFC125 reduce, it on the other hand, because the liquid refrigerant evaporates that contains in the many reservoirs of HFC134a 206 flows in the refrigerant loop, therefore, the cold-producing medium in the refrigerant loop except that refrigerant amount regulating tank 208 is the many compositions of HFC134a, on the characteristic of cold-producing medium, refrigerating capacity has the trend that reduces.
Below, the situation that begins heating operation under the state that is not detained refrigerant liquid in reservoir 206 is described.
At stopping period, though being standard, the cold-producing medium in the refrigerant loop forms, but when the beginning heating operation, under the transition state when starting, because in water-side heat 205, the HFC134a of condensation liquefies earlier than other compositions HFC32 and HFC125 easily, so, the trend that the residual refrigerant liquid of inflow refrigerant amount regulating tank 208 has HFC134a to increase.
Its result, the cold-producing medium in the refrigerant loop except that refrigerant amount regulating tank 208 is the many compositions of residual composition HFC32 and HFC125, on the characteristic of cold-producing medium, refrigerating capacity has the trend of raising.
But; because high-pressure also has the trend of increase; so; rise and unillustrated high pressure shutter among the ejiction opening that is located at compressor 201 and the figure as protective device on the refrigerant piping between the cross valve 202 for fear of high-pressure, the Yi Yinqi action gives the alarm and causes the operation termination.
And according to running status, refrigerant gas and refrigerant liquid are stored in the refrigerant amount regulating tank 208 simultaneously.At this moment, evaporable HFC32 and HFC125 are more than the standard composition in the refrigerant gas in the refrigerant amount regulating tank 208, and in the cold-producing medium in the refrigerant loop except that refrigerant amount regulating tank 208, HFC32 and HFC125 reduce.That is, the cold-producing medium in the refrigerant loop except that refrigerant amount regulating tank 208 is formed, change with the refrigerant gas amount in the refrigerant amount regulating tank 208, so, produce the problem that refrigerating capacity changes thereupon.
Summary of the invention
The present invention proposes in order to solve problem as described above, and purpose is to keep flowing into the standard that the consists of composition of the mix refrigerant in the refrigerant loop.
Utilizing refrigerant piping with compressor, cross valve, have the 1st heat exchanger of the function of condenser and evaporimeter concurrently, expansion valve, have the 2nd heat exchanger of the function of condenser and evaporimeter concurrently, in the refrigerant loop that reservoir couples together, the 1st bypass pipe is installed on the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, on the 1st bypass pipe, connect the refrigerant amount regulating tank, on the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, than the more close expansion valve side in the installation site of aforementioned the 1st bypass pipe the 2nd bypass pipe is being installed, on the 2nd bypass pipe, establish check valve, and, be connected on the aforementioned refrigerant amount regulating tank.
Again, the cold-producing medium that uses is mix refrigerant.
Again, the diameter of the 2nd bypass pipe is littler than the diameter of the 1st bypass pipe.
The present invention, because the measure below having taked, promptly, utilizing refrigerant piping will have the 1st heat exchanger of the function of condenser and evaporimeter concurrently, expansion valve, have the 2nd heat exchanger of the function of condenser and evaporimeter concurrently, in the refrigerant loop that reservoir couples together, the 1st bypass pipe is installed on the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, on the 1st bypass pipe, connect the refrigerant amount regulating tank, on the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, than the more close expansion valve side in the installation site of aforementioned the 1st bypass pipe the 2nd bypass pipe is being installed, on the 2nd bypass pipe, establish check valve, and, be connected on the aforementioned refrigerant amount regulating tank, so, the 2nd bypass pipe plays the effect of refrigerant amount regulating tank exhaust, when when heating operation, residual refrigerant liquid being remained in the refrigerant amount regulating tank, can successfully flow into cold-producing medium.
Again, when the cold-producing medium that uses during as mix refrigerant, often circulate by a part that makes the liquid that flows into when the heating operation through the 2nd bypass pipe, and by making component ratio temporarily form different cold-producing medium inflow refrigerant amount regulating tank storages with standard, change even the cold-producing medium in the refrigerant loop is formed, the standard of also can getting back to when stable operation is formed.
Again, diameter by making the 2nd bypass pipe is less than the diameter of the 1st bypass pipe, return the refrigerant amount of refrigerant loop from the refrigerant amount regulating tank by the 2nd bypass pipe when regulating heating operation, can when stable operation, make the refrigerant amount in the refrigerant amount regulating tank keep certain.
The simple declaration of drawing
Fig. 1 shows the example of basic refrigerant loop of the air cooling heat pump air-cooler of form of implementation 1.
Fig. 2 shows that the spy of conventional art opens an example of the described basic refrigerant loop of flat 7-1201119 communique.
Fig. 3 illustrates that the spy opens the p-h line chart of the described refrigerant loop of flat 7-1201119 communique.
Fig. 4 shows the example of basic refrigerant loop of the air cooling heat pump air-cooler of another conventional art.
Symbol description
1 compressor, 2 cross valves, 3 air-side heat exchangers, 4 expansion valves, 5 water-side heats, 6 reservoirs, 7 bypass pipes, 8 refrigerant amount regulating tanks, 9 bypass pipes, 10 check valves.
The working of an invention form
Form of implementation 1
Fig. 1 is the example of basic refrigerant loop of showing the air cooling heat pump air-cooler of form of implementation 1.
In the drawings, the 1st, compressor, the 2nd, the cross valve that flows of switching cold-producing medium when changes in temperature move, the 3rd, air-side heat exchanger, the 4th, expansion valve, the 5th, water-side heat, the 6th, reservoir, the 8th, by the refrigerant amount regulating tank of bypass pipe 7 design, the 9th, make the cold-producing medium that remains in refrigerant amount regulating tank 8 return refrigerant loop and have the bypass pipe of check valve 10.This bypass pipe 9 adopts than the little pipe of bypass pipe 7 diameters, and for example, when bypass pipe 7 adopted external diameter to be the pipe of 9.52mm, bypass pipe 9 adopted the pipe of 6.4mm.
In addition, on this refrigerant loop, cold-producing medium adopts the mix refrigerant HFC407C of non-azeotropic.
Below, the operation principle of this refrigerant loop is described.
In the refrigerant loop of Fig. 1, remainder flows into refrigerant amount regulating tank 8 by bypass pipe 7 when heating operation, the cold-producing medium that flows out from refrigerant amount regulating tank 8 during refrigerating operaton replenishes insufficient section, and this point is identical with the refrigerant loop shown in Figure 4 of showing traditional technology.
Difference is, when heating operation, the pressure of pressure ratio bypass pipe 7 installation sites of bypass pipe 9 installation sites on the main pipe arrangement of refrigerant loop is low, utilize this point, return refrigerant loop at ordinary times by having the bypass pipe 9 of design, make a part that remains in the cold-producing medium in the refrigerant amount regulating tank 8 at the check valve 10 on the top of refrigerant amount regulating tank 8.
At this, imagine the situation out of service under the state of refrigerant liquid that in reservoir 6, retains.At this moment, remaining in the refrigerant liquid of reservoir 6 inside, is many compositions of the HFC134a of easy condensation in its composition.Therefore, the cold-producing medium in the refrigerant loop except reservoir 6 is the many compositions of residual components HFC32 and HFC125.
Therefore, when beginning heating operation under this state, the residual refrigerant liquid that flows into refrigerant amount regulating tank 8 also is HFC32 and the many compositions of HFC125.
On the other hand, because the refrigerant liquid evaporation that contains in the many reservoirs of HFC134a 6 flows in the refrigerant loop, so the cold-producing medium in the refrigerant loop except that refrigerant amount regulating tank 8 is the many compositions of HFC134a.
At this, because utilize the pressure differential of bypass pipe 7 and the installation site of bypass pipe 9 on the main pipe arrangement of refrigerant loop, a part that remains in the refrigerant liquid of the many compositions of HFC32 in the refrigerant amount regulating tank 8 and HFC125 is returned refrigerant loop by having design at the bypass pipe 9 of the check valve 10 on the top of refrigerant amount regulating tank 8, so, As time goes on, with the refrigerant mixed of the many composition of HFC134a, the cold-producing medium standard of getting back in the refrigerant loop is formed.
At this moment, get back to the refrigerant amount of refrigerant loop, utilize the diameter of bypass pipe 9 to regulate, set when heating operation is stablized and guarantee a certain amount of residual refrigerant in the refrigerant amount regulating tank 8 less than the diameter this point of bypass pipe 7 by bypass pipe 9.
Then, imagine the situation out of service under the state of refrigerant liquid that in reservoir 6, do not retain.At this moment, the cold-producing medium in the refrigerant loop is that standard is formed.
When under this state, beginning heating operation, under the transition state when starting, on water-side heat 5, because the HFC134a of condensation is than other composition HFC32 and HFC125 liquefaction earlier easily, so, the trend that the residual refrigerant liquid of inflow refrigerant amount regulating tank 8 has HFC134a to increase.
At this, because utilize the pressure differential of bypass pipe 7 and the installation site of bypass pipe 9 on the main pipe arrangement of refrigerant loop, a part that remains in the cold-producing medium in the refrigerant amount regulating tank 8 is by having the bypass pipe 9 of design at the check valve 10 on the top of refrigerant amount regulating tank 8, before near expansion valve 4, return refrigerant loop, so, the part of the refrigerant liquid of the composition that HFC134a is many is returned refrigerant loop, with the refrigerant mixed of HFC32, HFC125 composition how, the cold-producing medium when stable in the refrigerant loop is got back to standard and is formed.
Again, because bypass pipe 9 plays the effect of refrigerant amount regulating tank 8 exhausts, so, when residual refrigerant liquid remains in refrigerant amount regulating tank 8 during heating operation, can flow into smoothly by bypass pipe 7.In addition, this effect is not limited to the mix refrigerant of non-azeotropic, even unitary system cryogen and azeotrope refrigerant also can obtain this effect equally.
Again, in this form of implementation, though the described tangible heat pump air-cooler of difference of necessary refrigerant amount when being refrigerating operaton and during heating operation to other the air conditioner that can utilize that cross valve changes that fluid flows, can be said also and can use the present invention.
Claims (1)
1. refrigerant loop, it is characterized in that: utilizing refrigerant piping compressor, cross valve, have the 1st heat exchanger of the function of condenser and evaporimeter concurrently, expansion valve, have the 2nd heat exchanger of the function of condenser and evaporimeter concurrently, in the refrigerant loop that reservoir couples together, it is characterized in that: the cold-producing medium that uses is mix refrigerant, the 1st bypass pipe is installed on the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, on the 1st bypass pipe, connect the refrigerant amount regulating tank, in the refrigerant piping between aforementioned expansion valve and aforementioned the 2nd heat exchanger, than the more close expansion valve side in the installation site of aforementioned the 1st bypass pipe the 2nd bypass pipe is being installed, on the 2nd bypass pipe, establish check valve, and be connected on the aforementioned refrigerant amount regulating tank, and the diameter of the 2nd bypass pipe is less than the diameter of the 1st bypass pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP276040/2001 | 2001-09-12 | ||
| JP2001276040A JP4848608B2 (en) | 2001-09-12 | 2001-09-12 | Refrigerant circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405515A CN1405515A (en) | 2003-03-26 |
| CN1173139C true CN1173139C (en) | 2004-10-27 |
Family
ID=19100808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021315442A Expired - Lifetime CN1173139C (en) | 2001-09-12 | 2002-09-11 | Refrigerant loop tank |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1293735B1 (en) |
| JP (1) | JP4848608B2 (en) |
| CN (1) | CN1173139C (en) |
| AT (1) | ATE356962T1 (en) |
| DE (1) | DE60218793T2 (en) |
| ES (1) | ES2284756T3 (en) |
| PT (1) | PT1293735E (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5157580B2 (en) * | 2008-03-28 | 2013-03-06 | ダイキン工業株式会社 | Refrigeration equipment |
| CN101949621A (en) * | 2010-09-30 | 2011-01-19 | 广东志高空调有限公司 | Energy-saving air conditioner with refrigerant adjusting function |
| JP2012077983A (en) * | 2010-09-30 | 2012-04-19 | Daikin Industries Ltd | Refrigerating circuit |
| JP5765211B2 (en) * | 2011-12-13 | 2015-08-19 | ダイキン工業株式会社 | Refrigeration equipment |
| AT513637B1 (en) * | 2012-12-13 | 2016-05-15 | Herz Energietechnik Gmbh | Heat pump method and apparatus for optimizing subcooling during the condensation process in the cold vapor compression process |
| CN105612394B (en) * | 2013-08-09 | 2019-04-30 | 特灵空调系统(中国)有限公司 | Transitional refrigerant migration control in refrigeration system |
| KR101669971B1 (en) * | 2014-11-17 | 2016-10-27 | 엘지전자 주식회사 | Air conditioner |
| CN105674640B (en) * | 2014-11-18 | 2018-04-17 | 上海海立电器有限公司 | The flux matched regulating device of air-conditioning system refrigerant charging and method |
| JP6479203B2 (en) * | 2015-10-20 | 2019-03-06 | 三菱電機株式会社 | Refrigeration cycle equipment |
| US11105544B2 (en) * | 2016-11-07 | 2021-08-31 | Trane International Inc. | Variable orifice for a chiller |
| CN106482303B (en) * | 2016-11-25 | 2022-05-17 | 广州华凌制冷设备有限公司 | Air conditioner and refrigeration control method thereof |
| WO2020066003A1 (en) * | 2018-09-28 | 2020-04-02 | 三菱電機株式会社 | Refrigerating cycle apparatus |
| CN109974169B (en) * | 2019-02-28 | 2021-02-19 | 浙江高翔工贸有限公司 | Double-working-medium air conditioner |
| DE102019002297A1 (en) * | 2019-03-31 | 2020-10-01 | Steffen Klein | Expansion of the R718 area of application |
| JP7501257B2 (en) * | 2020-09-09 | 2024-06-18 | 富士通株式会社 | Cooling device, electronic device, and cooling method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627589B2 (en) * | 1985-11-19 | 1994-04-13 | 三洋電機株式会社 | Heat pump refrigeration system |
| KR930000852B1 (en) * | 1987-07-31 | 1993-02-06 | 마쓰시다덴기산교 가부시기가이샤 | Heat pump system |
| JPH01273959A (en) * | 1988-04-25 | 1989-11-01 | Nippon Denso Co Ltd | Air conditioner for vehicle |
| JPH0745982B2 (en) * | 1988-08-31 | 1995-05-17 | 松下電器産業株式会社 | Heat pump device |
| JPH0414975A (en) * | 1990-05-08 | 1992-01-20 | Sharp Corp | Picture reproducing device |
| US5186012A (en) * | 1991-09-24 | 1993-02-16 | Institute Of Gas Technology | Refrigerant composition control system for use in heat pumps using non-azeotropic refrigerant mixtures |
| JPH06341741A (en) * | 1993-06-01 | 1994-12-13 | Daikin Ind Ltd | Defrosting controller for refrigerating device |
| JPH0712411A (en) * | 1993-06-24 | 1995-01-17 | Hitachi Ltd | Refrigerating cycle and control method of ratio of composition of refrigerant for same |
| JP3168496B2 (en) * | 1993-10-28 | 2001-05-21 | 株式会社日立製作所 | Air conditioner |
| JPH10119561A (en) * | 1996-10-14 | 1998-05-12 | Calsonic Corp | Air conditioner for automobile |
| JP2000179957A (en) * | 1998-12-17 | 2000-06-30 | Hitachi Ltd | Air conditioner |
-
2001
- 2001-09-12 JP JP2001276040A patent/JP4848608B2/en not_active Expired - Lifetime
-
2002
- 2002-09-10 EP EP02020405A patent/EP1293735B1/en not_active Expired - Lifetime
- 2002-09-10 ES ES02020405T patent/ES2284756T3/en not_active Expired - Lifetime
- 2002-09-10 PT PT02020405T patent/PT1293735E/en unknown
- 2002-09-10 DE DE60218793T patent/DE60218793T2/en not_active Expired - Lifetime
- 2002-09-10 AT AT02020405T patent/ATE356962T1/en not_active IP Right Cessation
- 2002-09-11 CN CNB021315442A patent/CN1173139C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60218793D1 (en) | 2007-04-26 |
| JP2003083644A (en) | 2003-03-19 |
| EP1293735B1 (en) | 2007-03-14 |
| EP1293735A2 (en) | 2003-03-19 |
| EP1293735A3 (en) | 2003-05-28 |
| DE60218793T2 (en) | 2007-12-06 |
| CN1405515A (en) | 2003-03-26 |
| JP4848608B2 (en) | 2011-12-28 |
| PT1293735E (en) | 2007-05-31 |
| ES2284756T3 (en) | 2007-11-16 |
| ATE356962T1 (en) | 2007-04-15 |
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