CN1165719C - Refrigerating circulating apparatus - Google Patents
Refrigerating circulating apparatus Download PDFInfo
- Publication number
- CN1165719C CN1165719C CNB021415900A CN02141590A CN1165719C CN 1165719 C CN1165719 C CN 1165719C CN B021415900 A CNB021415900 A CN B021415900A CN 02141590 A CN02141590 A CN 02141590A CN 1165719 C CN1165719 C CN 1165719C
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- Prior art keywords
- compressor
- aforementioned
- pressure
- side compressor
- senior
- 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 - Fee Related
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Classifications
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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- 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
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
To provide a refrigeration cycle unit using a two stage compressor wherein time of defrosting operation is reduced. SOLUTION: Two-stage compressor having a low stage side compressor and a high stage side compressor as its components, a high pressure side heat exchanger for cooling gas discharged from the high stage side compressor, an expansion valve and an evaporator for effecting heat exchange with outdoor air are connected sequentially to form a refrigerant circuit. The refrigerant circuit is provided with a first bypass circuit from the discharge side of the high stage compressor to the inlet side of the evaporator, and a second bypass circuit from the discharge side of the low stage side compressor to the inlet side of the evaporator. The first bypass circuit and the second bypass circuit are respectively provided with on/off valves which are closed in normal refrigerating operation and are opened in defrosting operation.
Description
Technical field
The present invention relates to a kind of freezing cycle device, particularly relate to a kind of freezing cycle device that uses two-stage compressor.
Background technology
Usually, being used for the ambient atmos is the freezing cycle device that thermal source carries out the device of heating or hot water supply, be furnished with the senior side compressor in compressor, the cooling compressor discharge gas high-pressure side heat exchanger (in common freezing cycle device, being condenser), expansion valve, carry out the refrigerant loop that the evaporimeter of heat exchange couples together in turn with ambient atmos, draw heat with evaporimeter from ambient atmos, the heat that is drawn is supplied in the water to room air or hot water by high-pressure side heat exchanger heat release.And, this freezing cycle device, when the ambient atmos temperature descended, evaporating temperature descended, evaporimeter frosting.And when frosting degree increased, the heat-exchange capacity of evaporimeter descended, and heating ability and hot water heating efficiency descend.Therefore, need remove attached to the defrosting of the frost on evaporimeter running.This running that defrosts, in order to utilize hot gas, to be the thermal source that compressor is discharged gas, heating running therebetween or hot water add heat run and have to stop.Therefore, needing defrosting to operate in the very limited short period finishes.
And, in existing freezing cycle device, as defroster, carry out by refrigerant loop switching device shifter fairly simplely, and from the angle that can not cool off as the room air that is heated object or hot water in reverse circulating mode, in when running defrosting cooling, the employing gases at high pressure (so-called hot gas) of compressor being discharged side are diverted to simple hot gas shunting mode the evaporator inlet side from the high-pressure side loop feature mostly.
But, in this existing defroster, with compressor be single-stage or two-stage irrelevant, merely make hot gas from high-pressure side loop feature inflow evaporator entrance side, and this is the special charges time under the situation of two-stage compressor at compressor.
The present invention proposes in view of existing problem in the prior art.Its purpose is that a kind of freezing cycle device that shortens the use two-stage compressor that defrosts the duration of runs is provided.
Summary of the invention
To achieve these goals, freezing cycle device of the present invention, being furnished with will be with rudimentary side compressor and the senior side compressor two-stage compressor that is constitutive requirements, cooling is from the high-pressure side heat exchanger of the gas of senior side compressor discharge, expansion valve, carry out the refrigerant loop that the evaporimeter of heat exchange couples together in turn with ambient atmos, this refrigerant loop comprises: first bypass circulation from the discharge side of aforementioned senior side compressor to aforementioned evaporation device entrance side, second bypass circulation from the discharge side of aforementioned rudimentary side compressor to aforementioned evaporation device entrance side, this first bypass circulation and second bypass circulation have respectively when constant freezing running and close, the switch valve of when the defrosting running, opening.
A kind of freezing cycle device of the present invention, be furnished with: will be with rudimentary side compressor and the senior side compressor two-stage compressor that is constitutive requirements, cooling is from the high-pressure side heat exchanger of the gas of this senior side compressor discharge, expansion valve, carry out the refrigerant loop that the evaporimeter of heat exchange is connected in turn with ambient atmos, this refrigerant loop comprises: first bypass circulation from the discharge side of aforementioned senior side compressor to aforementioned evaporation device entrance side, second bypass circulation from the discharge side of aforementioned rudimentary side compressor to aforementioned evaporation device entrance side, this first bypass circulation and second bypass circulation, have respectively when constant freezing running and close, the switch valve of when the defrosting running, opening, it is characterized in that: aforementioned two-stage compressor, built-in senior side compressor and rudimentary side compressor in closed shell, the discharge side of aforementioned rudimentary side compressor and the suction side of aforementioned senior side compressor couple together by the middle connecting pipings that is configured in aforementioned compression case external body, and aforementioned second bypass circulation is connected with this centre connecting pipings.
Adopt this structure, when the defrosting running, rudimentary side compressor and senior side compressor can be effective as booster, make the gas that comes from high-pressure side loop feature and intermediate pressure part flow to evaporimeter in large quantities quickly, therefore store the heat in pressurized gas refrigerant, intermediate-pressure gas refrigerant, loop, high-pressure side component parts, intermediate pressure loop component parts etc., with the hot bypass gas of shunting of sending into evaporimeter by aforementioned bypass circulation is that medium is sent in the evaporimeter, be discharged in the evaporimeter quickly, thereby, can shorten the duration of runs of defrosting.
And, aforementioned two-stage compressor, built-in senior side compressor and rudimentary side compressor in closed shell, the discharge side of aforementioned rudimentary side compressor and the suction side of aforementioned senior side compressor couple together by the middle connecting pipings that is configured in aforementioned compression case external body, aforementioned second bypass circulation preferably has the connecting portion that is connected with the discharge side of aforementioned rudimentary side compressor in this centre connecting pipings.
Adopt this structure, can easily realize the connection of the aforementioned second bypass pipe arrangement.
And aforementioned freezing cycle device can be that high side pressure is the overcritical freezing cycle device of supercritical pressure.
Under the situation that adopts overcritical freezing cycle device, because the temperature of high side pressure gas and intermediate-pressure gas is higher, the heat that stores in pressurized gas refrigerant, intermediate-pressure gas refrigerant, loop, high-pressure side component parts, intermediate pressure loop component parts etc. is very big, so it is remarkable to shorten the effect that defrosts the duration of runs.
Description of drawings
Fig. 1 is the loop diagram according to the hot-water supply device of the invention process form.
The Mollier calculation of thermodynamics figure of the running of the freezing cycle device when Fig. 2 is the constant hot water supply running that is used to illustrate according to the hot-water supply device of the invention process form.
Concrete form of implementation
Below, the form of implementation that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the loop diagram according to the hot-water supply device of the invention process form.As shown in Figure 1, according to the hot-water supply device of form of implementation 1, be furnished with: overcritical freezing cycle device 1, hot water feeding unit 2 and control device 3.In addition, in this form of implementation, control device 3 is arranged in the overcritical freezing cycle device 1.And overcritical freezing cycle device 1 and hot water feeding unit 2 couple together with connecting pipings 5,6 by water.
Overcritical freezing cycle device 1 is furnished with the closed-loop path (refrigerant loop) that two-stage compressor 11, high-pressure side heat exchanger 12, electric expansion valve 13, evaporimeter 14, storage heater 15 are coupled together in turn.In this inside, refrigerant loop, be filled with carbon dioxide CO
2, as the alternative refrigerant that carries out overcritical cool cycles running.As the representational natural refrigerant of cooling, idle call, can enumerate hydrocarbon (HC: propane or iso-butane etc.), ammonia, air and CO
2Deng.But as the characteristic of refrigerant, hydrocarbon and ammonia energy efficiency are good but have negative issues such as having flammable and toxicity, and air exists in ultralow temperature zone problem such as energy efficiency variation in addition.Comparatively speaking, carbon dioxide does not have combustibility and toxicity, is safe.
Two-stage compressor is that exploitation is used for overcritical freezing cycle device, in closed shell, be built-in with rudimentary side compressor 11a, senior side compressor 11b, be used to drive the motor 11c of these compressors 11a and 11b, the middle connecting pipings 11d that the suction side of the discharge side of rudimentary side compressor 11a and senior side compressor 11b is set at the compression case external body couples together.And, the space in the closed shell by intermediate-pressure gas, be that the discharge gas of rudimentary side compressor 11a is full of.Like this, in the closed shell be for the reason of intermediate pressure, acting on power on each position of each compressor and the closed shell pressure differential between inside and outside remains in the suitable scope, avoid the effect of bigger power, therefore, it can be used as high reliability, low vibration, low noise, high efficiency compressor.
In addition, connecting pipings 11d in the middle of aforementioned, though also the outlet of rudimentary side compressor 11a and the suction inlet of senior side compressor 11b directly can be coupled together, but, under the situation of this form of implementation, then be by making the suction inlet that rudimentary side compressor 11a discharge gas is imported to the senior side compressor 11b in the closed shell at this closed shell inner opening, the discharge side of rudimentary side compressor 11a and the suction side of senior side compressor 11b being coupled together.
The water that the hot water that high-pressure side heat exchanger 12 is sent from the water storage boxes 21 that are configured in the hot water feeding unit 2 with heat-exchange tube 12a and importing from the refrigerant of the high pressure refrigerant of senior side compressor 11b discharge by importing is supplied water constitutes with heat-exchange tube 12b, and both form heat exchange relationship.Therefore, the hot water supply water cooling that the cold media gas of the HTHP of discharging from senior side compressor 11b is sent from water storage box 21, this hot water supply water is heated by the heat that the HTHP refrigerant produces.
Hot water feeding unit 2 is furnished with: water storage box 21, hot water circulating pump 22, hot water supply pipe arrangement 23, feedwater pipe arrangement 24.
And water storage box 21 upper and lowers utilize with heat-exchange tube 12b with respect to aforementioned water to comprise water and couple together with the hot water circulation loop P of connecting pipings 5,6.And, in water storage box 21, because the effect of gravitational difference is high more by the top hot water temperature more.Therefore, with the lower water of temperature of water storage box 21 bottoms is sent into water with heat-exchange tube 12b, will be imported to the mode on water storage box 21 tops by water with the higher water of temperature of heat-exchange tube 12b heating, form hot water circulation loop P, simultaneously, in this hot water circulation loop P, hot water circulating pump 22 is installed.In addition, utilize the hot water temperature's detector 33 be arranged on water storage box 21 tops to measure top hot water temperature in the water storage boxes 21, be heating-up temperature.
Hot water supply pipe arrangement 23 is used for to hot-water supplies such as hot water tap, bathtubs, is connected to the top of water storage box 21 in the mode that can supply the high-temperature-hot-water in the water storage box 21.In addition, in this hot water supply loop, switch valve 25 is installed.
Element as constituting defroster in aforementioned refrigerant loop, is provided with first bypass circulation 16 and 17 two bypass circulations of second bypass circulation.First bypass circulation 16 is arranged between the discharge pipe arrangement 18 of senior side compressor 11b and the pipe arrangement of evaporator inlet side (that is, connecting the pipe arrangement of electric expansion valve 13 and evaporimeter 14) 19, is provided with the first electromagnetic switch valve 16a halfway.On the other hand, the second bypass pipe arrangement 17 is arranged between the middle connecting pipings 11d and evaporator inlet side line 19 of suction side of the discharge side that connects rudimentary side compressor 11a and senior side compressor 11b, is provided with the second electromagnetic switch valve 17a halfway.In addition, because the middle connecting pipings 11d of the suction side of the discharge side of the rudimentary side compressor 11a of connection and senior side compressor 11b is arranged on the compression case external body, so can easily carry out the connection of second bypass circulation.
Below, the action of the hot-water supply device that adopts above-mentioned freezing cycle device is described.
The running of the freezing cycle device when constant hot water supply is turned round at first, is described with reference to the Mollier calculation of thermodynamics figure of Fig. 2.In addition, the refrigerant when constant running flows to shown in the solid arrow among Fig. 1.
Constitute the rudimentary side compressor 11a of two-stage compressor 11, suck from storage heater 15 and the low-pressure gas (r1) that comes, and be compressed to intermediate pressure (r2).The gas coolant (r2) that is compressed into intermediate pressure is imported in the housing of two-stage compressor 11 by middle connecting pipings 11d, in this housing, carry out cooling (r3) to a certain degree, be drawn into senior side compressor 11b (r3), it be compressed to supercritical pressure and send into high-pressure side heat exchanger 12 (r4).These gases at high pressure (r4) carry out heat exchange by high-pressure side heat exchanger 12 and the hot water supply water of sending from water storage box 21, and the high pressure refrigerant itself is cooled (r5), and hot water supply water is heated and turns back to water storage box 21 tops.
By the pressurized gas refrigerant (r5) of high-pressure side heat exchanger 12 coolings, form the gas-liquid mixed gas coolant that is reduced pressure by electric expansion valve 13, deliver to evaporimeter 14 (r6).The gas-liquid mixed gas coolant (r6) of delivering to evaporimeter 14 carries out heat exchange with ambient atmos, draws heat and is gasified from ambient atmos, is inhaled among the rudimentary side compressor 11a through storage heater 15.In addition, storage heater 15 will not hold the refrigerant of staying in the low-pressure side loop feature and be drawn in the compressor when freezing cycle device starts, and not have special function when constant running.In addition, in the running stopped process, in low-pressure side loop feature,, flow into the low-pressure side loop feature and liquefy, hold the phenomenon of staying so produce the gas coolant of high-pressure side loop feature owing to cooled off by ambient atmos as the major part of evaporimeter.
By above-mentioned circulation, heat that draws from ambient atmos and the suitable heat of acting amount the two-stage compressor 12 are released in the high-pressure side heat exchanger 12, the hot water supply water that utilizes the heating of this heat to send from water storage box 21 forms hot water and stores into from the top of water storage box 21.
Below, the operation during to the defrosting running describes.Refrigerant when the wave arrow among Fig. 1 is represented this defrosting running flows to.When being connected with above-mentioned constant running, in evaporimeter 14 frosting gradually with the lower state of extraneous gas temperature.When the amount of this frost acquires a certain degree when above, frosting detector 31 detects it.Thereby, send the defrosting instruction from control device 3.According to this defrosting instruction, the running of the pressure fan (not shown) of two-stage compressor running, evaporimeter 14, from water storage box 21 to the hot water supply water of high-pressure side heat exchanger 12 send above-mentioned constant running such as water the time the state that continues of operating condition under, open the first electromagnetic switch valve 16a in first bypass circulation 16 and the second electromagnetic switch valve 17a in second bypass circulation 17.
Like this, under the state of opening the first and second electromagnetic switch valve 16a, 17a, the refrigerant circulating resistance of electromagnetic switch valve 16a, 17a is set lessly, thereby, height pressure differential can not producing when resembling constant the running, height pressure forms the roughly state of balance.Therefore, senior side compressor 11b and rudimentary side compressor 11a all use as booster.Thereby, running by two compressor 11a, 11b, store the heat in the structure member of parts such as gas coolant in high-pressure side loop feature and intermediate pressure part and motor 11c, to be that medium is sent to evaporimeter 14, discharge from hot gas as two compressor 11a, the 11b supply of booster work quickly.
Therefore, melted quickly, finished defrosting at short notice attached to the frost on the evaporimeter 14.
In addition, thinking of the present invention is not limited to the hot-water supply device of the overcritical freezing cycle device of application as described above, also goes among the common freezing cycle device.But, in adopting the hot-water supply device of overcritical freezing cycle device, compare with the situation of common freezing cycle device, the high side pressure height when constant running, the thermal capacity of high-pressure side loop feature is big, thereby it is remarkable to shorten the effect of defrosting time.
Because the present invention adopts said structure, so have following effect.
Adopt the present invention, be furnished with take rudimentary side compressor and senior side compressor as constitutive requirements Two-stage compressor, the gas that cooling is discharged from the senior side compressor that consists of this two-stage compressor High-pressure side heat exchanger, expansion valve, the evaporimeter that carries out heat exchange with ambient atmos connect in turn The refrigerant loop that connects, this refrigerant loop comprises: from consisting of the senior of aforementioned two-stage compressor The discharge side of side compressor is to first bypass circulation of aforementioned evaporation device entrance side, from aforementioned two-stage The discharge side of rudimentary side compressor to second bypass of aforementioned evaporation device entrance side is returned in the compressor The road, this first bypass circulation and second bypass circulation have respectively when constant cooling running and close The switch valve that closes, when the defrosting running, opens, thereby, when the defrosting running, rudimentary side pressure contracting Machine and senior side compressor can be effective as the function of booster, make to store in the high-pressure side and return Heat in road part and the intermediate pressure part is discharged in the evaporimeter quickly, can shorten defrosting The duration of runs.
And, aforementioned two-stage compressor, built-in senior side compressor and rudimentary in closed shell Side compressor, the discharge side of aforementioned rudimentary side compressor and the suction side of aforementioned senior side compressor Couple together aforementioned second by the middle connecting pipings that is configured in aforementioned compression case external body Bypass circulation has the discharge side company with aforementioned rudimentary side compressor in this centre connecting pipings The connecting portion that connects, thereby, can easily realize the connection of the aforementioned second bypass pipe arrangement.
And aforementioned freezing cycle device is that high side pressure is the overcritical cold of supercritical pressure Freeze EGR, thereby, store at pressurized gas refrigerant, intermediate-pressure gas refrigerant, high pressure Heat in side loop component parts, the intermediate pressure loop component parts etc. is very big, so shorten The effect that defrosts the duration of runs is remarkable.
Claims (2)
1. freezing cycle device, be furnished with: will be with rudimentary side compressor and the senior side compressor two-stage compressor that is constitutive requirements, cooling is from the high-pressure side heat exchanger of the gas of this senior side compressor discharge, expansion valve, carry out the refrigerant loop that the evaporimeter of heat exchange is connected in turn with ambient atmos, this refrigerant loop comprises: first bypass circulation from the discharge side of aforementioned senior side compressor to aforementioned evaporation device entrance side, second bypass circulation from the discharge side of aforementioned rudimentary side compressor to aforementioned evaporation device entrance side, this first bypass circulation and second bypass circulation, have respectively when constant freezing running and close, the switch valve of when the defrosting running, opening
It is characterized in that: aforementioned two-stage compressor, built-in senior side compressor and rudimentary side compressor in closed shell, the discharge side of aforementioned rudimentary side compressor and the suction side of aforementioned senior side compressor couple together by the middle connecting pipings that is configured in aforementioned compression case external body, and aforementioned second bypass circulation is connected with this centre connecting pipings.
2. freezing cycle device as claimed in claim 1 is characterized in that: aforementioned freezing cycle device is that high side pressure is the overcritical freezing cycle device of supercritical pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP267606/2001 | 2001-09-04 | ||
| JP2001267606A JP4641683B2 (en) | 2001-09-04 | 2001-09-04 | Refrigeration cycle equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403762A CN1403762A (en) | 2003-03-19 |
| CN1165719C true CN1165719C (en) | 2004-09-08 |
Family
ID=19093713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021415900A Expired - Fee Related CN1165719C (en) | 2001-09-04 | 2002-09-03 | Refrigerating circulating apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4641683B2 (en) |
| KR (1) | KR100503178B1 (en) |
| CN (1) | CN1165719C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313184B (en) * | 2005-11-30 | 2010-09-29 | 大金工业株式会社 | Freezing apparatus |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161659A (en) * | 2004-12-07 | 2006-06-22 | Hitachi Ltd | Refrigerating cycle device |
| JP5144897B2 (en) * | 2006-03-27 | 2013-02-13 | 三洋電機株式会社 | Refrigeration cycle equipment |
| DE202007003577U1 (en) * | 2006-12-01 | 2008-04-10 | Liebherr-Hausgeräte Ochsenhausen GmbH | Fridge and / or freezer |
| CN101542218B (en) * | 2007-06-22 | 2012-06-27 | 松下电器产业株式会社 | Refrigeration cycle device |
| CN102884384A (en) * | 2010-09-27 | 2013-01-16 | 东芝开利株式会社 | Hot water supply system |
| KR101645845B1 (en) | 2015-01-12 | 2016-08-04 | 엘지전자 주식회사 | Air conditioner |
| KR101698261B1 (en) * | 2015-01-12 | 2017-01-19 | 엘지전자 주식회사 | Air conditioner and control method thereof |
| KR101639516B1 (en) | 2015-01-12 | 2016-07-13 | 엘지전자 주식회사 | Air conditioner |
| CN110873031A (en) * | 2018-08-31 | 2020-03-10 | 广东美芝精密制造有限公司 | Compressor assembly and air conditioning system |
| US20220390149A1 (en) * | 2021-06-04 | 2022-12-08 | Booz Allen Hamilton Inc. | Thermal management systems |
| CN113310274A (en) * | 2021-06-22 | 2021-08-27 | 爱科凯能科技（北京）股份有限公司 | Water cooling device matched with laser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153476A (en) * | 1999-11-30 | 2001-06-08 | Sanyo Electric Co Ltd | Refrigerating plant |
-
2001
- 2001-09-04 JP JP2001267606A patent/JP4641683B2/en not_active Expired - Fee Related
-
2002
- 2002-09-03 CN CNB021415900A patent/CN1165719C/en not_active Expired - Fee Related
- 2002-09-03 KR KR10-2002-0052665A patent/KR100503178B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313184B (en) * | 2005-11-30 | 2010-09-29 | 大金工业株式会社 | Freezing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1403762A (en) | 2003-03-19 |
| JP4641683B2 (en) | 2011-03-02 |
| JP2003074998A (en) | 2003-03-12 |
| KR20030020837A (en) | 2003-03-10 |
| KR100503178B1 (en) | 2005-07-25 |
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Granted publication date: 20040908 Termination date: 20110903 |