CN102003740A - Refrigerant-borne air conditioner - Google Patents
Refrigerant-borne air conditioner Download PDFInfo
- Publication number
- CN102003740A CN102003740A CN201010554429.7A CN201010554429A CN102003740A CN 102003740 A CN102003740 A CN 102003740A CN 201010554429 A CN201010554429 A CN 201010554429A CN 102003740 A CN102003740 A CN 102003740A
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- heat exchanger
- air conditioner
- premises station
- cold
- cooling air
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- 239000003507 refrigerant Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 30
- 238000005057 refrigeration Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 13
- 238000013461 design Methods 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 239000001294 propane Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 208000010513 Stupor Diseases 0.000 description 1
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention discloses a refrigerant-borne air conditioner comprising an indoor unit, an outdoor unit, a first heat exchanger, a compressor, a throttling element, a second heat exchanger, a middle heat exchanger, a refrigerant circulation loop and a secondary refrigerant circulation loop. The indoor unit is used for circularly exchanging the heat of an indoor air, the outdoor unit can carry away the heat of the indoor air, the first heat exchanger and the compressor are arranged in the outdoor unit, the second heat exchanger is arranged in the indoor unit, the middle heat exchanger is arranged on the outdoor unit, the refrigerant circulation loop comprises the compressor and the first heat exchanger which are arranged in the indoor unit, the throttling element and the middle heat exchanger, the secondary refrigerant circulation loop comprises the second heat exchanger on the indoor unit, a pump, the middle heat exchanger on the outdoor unit, and the secondary refrigerant and the refrigerant exchange heat in the middle heat exchanger on the outdoor unit. The refrigerant loop of the invention only operates in the outdoor unit, and the secondary refrigerant of the indoor unit is safe and reliable to circulate so as to provide an effective and practical environment for using the refrigerant R290.
Description
Technical field
The present invention relates to the air-conditioning technique field, more particularly, relate to a kind of year cooling air conditioner device of using the refrigerating medium refrigeration.
Background technology
R22 is a large amount of cold-producing mediums that use on the present air-conditioner, R22 (freon) cold-producing medium has destruction to atmospheric ozone layer, be to belong to the cold-producing medium that needs are eliminated, though existing substitute R410A cold-producing medium is zero to the destruction of ozone layer, the greenhouse gases effect of its generation has partly surpassed R22.With Du group, manufacturers such as Honeywell obtain abundant profit with the R410A patented technology in China monopolization cold-producing medium market, are unfavorable for the national industry development for many years, and industry is making great efforts to seek the air conditioner refrigerant of a kind of economy, safety, environmental protection.R290 (high-purity propane) is a kind of of hydrocarbon, English name: propane, and molecular formula is C3H8, molecular weight is 44.10.Compare with R22, propane is 0 to the depletion of the ozone layer coefficient, and global warming coefficient GWP value is very low, can ignore.Therefore R290 has the high value of environmental protection.But propane belongs to flammable cold-producing medium, forms explosive mixture with the air mixing energy, meets the danger that thermal source and naked light have combustion explosion.Contact fierce reaction with oxidant.Gas is heavier than air, and can be diffused into place quite far away in the lower, meets burning things which may cause a fire disaster and can catch fire and can fire.R290 has simple sex hanges and anesthetic effect.Of short duration contact 1% propane of people does not cause symptom; Concentration below 10% only causes slight dizziness; Narcosis, the loss of consciousness can appear during the contact high concentration; Can cause during high concentration and suffocate. propane and mineral oil mix, in the refrigeration system of the former R22 of using air-conditioning, directly adopt the R290 cold-producing medium, be equal to the R22 refrigeration system aspect the design process technology of refrigeration system, its major technology difficult point is that the possibility that possible cause its its combustion explosion is reduced to 0, therefore, design a kind of to meet people safe in utilization use R290 very necessary as the fire-retardant air-conditioner of cold-producing medium.
Existing multiple large-scale central air conditioner system adopts main with the cooling cycle system of water as refrigerating medium, realizes the storage and the transportation of cold with refrigerating medium.In the central air conditioner system of this year cold type, water obtains cold in the evaporimeter of refrigeration unit, temperature reduces, be transported in each terminal heat transmission equipment of air-conditioning system by water pump and insulated piping again and go, cold water is released cold quantity in the heat transmission equipment endways, temperature rises, and then gets back to the Intermediate Heat Exchanger of refrigeration unit, and so the cold transmission from refrigeration unit to each terminal heat transmission equipment is finished in circulation repeatedly.For large-scale central air conditioner system, terminal heat transmission equipment is many and distance is far away, compares with simple cold-producing medium phase-change heat-exchange circulation, adopts refrigerating medium to have incomparable advantage as the medium of transportation cold.But, use the system of refrigerating medium to increase Intermediate Heat Exchanger than simple refrigerant system, cost increases, and loss of refrigeration capacity is big in carrying cold course of conveying, if therefore prior art only is used in the large commercial refrigeration system and uses on the domestic air conditioner of room cooling separately, need to change the tubular-shaped structures of Intermediate Heat Exchanger, improve heat transfer coefficient.
Summary of the invention
The object of the invention is used the fire-retardant design problem of R290 as cold-producing medium in order to solve on air-conditioner, a kind of air-conditioner that uses refrigerating medium is provided, and makes the safe operation in off-premises station of R290 cold-producing medium, to overcome the deficiencies in the prior art.
The technical solution used in the present invention is: a kind of year cooling air conditioner device, comprise the indoor set that is used to make the room air cycle heat exchange, the off-premises station that the heat of room air can be taken away, be located at first heat exchanger and compressor in the off-premises station, restricting element, be located at second heat exchanger in the indoor set, also comprise the Intermediate Heat Exchanger that is arranged on the off-premises station, by the compressor on the off-premises station, first heat exchanger, restricting element, the refrigerant circulation loop that Intermediate Heat Exchanger is formed, by second heat exchanger on the indoor set, pump, the refrigerating medium closed circuit that Intermediate Heat Exchanger on the off-premises station is formed, described refrigerating medium and cold-producing medium are the Intermediate Heat Exchanger heat-shifts on off-premises station.
Above-mentioned carrying in the cooling air conditioner device, described Intermediate Heat Exchanger is socketed to form by lining pipe and outer tube, and mobile in the pipe in described is cold-producing medium.
Above-mentioned carrying in the cooling air conditioner device makes cold-producing medium discharge outdoor safety relief valve when its gas pressure exceeds limit value being provided with on the refrigerant circulation loop.
Above-mentioned carrying in the cooling air conditioner device, described safety relief valve are located on the pipeline between the compressor and first heat exchanger.
Above-mentioned carries in the cooling air conditioner device, and described Intermediate Heat Exchanger is located in the chamber, top of off-premises station.
Above-mentioned carries in the cooling air conditioner device, and bore is between ф 4.9～ф 6mm in the described Intermediate Heat Exchanger.
Above-mentioned carries in the cooling air conditioner device, and the pipeline internal diameter on the described refrigerant circulation loop is between ф 4.9～ф 6mm.
Above-mentioned carrying in the cooling air conditioner device, described in pipe be the helix tube of band double wedge screw thread.
Compared with prior art, the present invention has following beneficial effect:
1. the cooling air conditioner device was made up of refrigerant loop and refrigerating medium closed circuit in of the present invention year, refrigerant loop only moves in off-premises station, do not enter indoor set, the refrigeration heat exchange of indoor set is finished by the refrigerating medium closed circuit, the cold of the Intermediate Heat Exchanger in refrigerating medium absorption refrigeration agent loop passes to second heat exchanger of air conditioner room unit.Thereby reach the purpose that indoor air is regulated.And the circulation of the refrigerating medium of indoor set is very safe.
2. the present invention has safety relief valve in the design of the condensation high-pressure side of the refrigerant circulation loop of off-premises station, when overload pressure and temperature appear in air-conditioning refrigeration system, safety relief valve plays a role, and the R290 cold-producing medium is discharged in the atmospheric environment, prevents firing of cold-producing medium.
3. Intermediate Heat Exchanger adopts the double pipe heat exchanger of concentric.Pipe operation R290 cold-producing medium in the double pipe heat exchanger, outer tube operation water.In the structural design of pipe improve the heat exchange effect of heat exchanger greatly, can dwindle the bore of circulating line, saved material cost and occupation space.
Description of drawings
Fig. 1 is the refrigeration system schematic diagram that the cooling air conditioner device is carried in the present invention;
Fig. 2 is the off-premises station structural representation that the cooling air conditioner device is carried in the present invention;
Fig. 3 is the Intermediate Heat Exchanger structural representation that the cooling air conditioner device is carried in the present invention;
Fig. 4 is a tubular construction schematic diagram in the Intermediate Heat Exchanger of Fig. 3.
Fig. 5 is the structural representation that another embodiment of Intermediate Heat Exchanger of cooling air conditioner device is carried in the present invention;
Fig. 6 is a tubular construction schematic diagram in the Intermediate Heat Exchanger of Fig. 5
The specific embodiment
Referring to Fig. 1, the cooling air conditioner device was made up of indoor set and off-premises station in of the present invention year, and indoor set is in being installed in the room of use, and off-premises station is installed in outside the room.The refrigeration system of carrying the cooling air conditioner device is made of R290 refrigerant circulation loop and refrigerating medium closed circuit, and during work, the R290 cold-producing medium circulates in off-premises station, and refrigerating medium water circulates between indoor set and off-premises station.Join end to end by compressor 1, pressure-relief valve, first heat exchanger 2, restricting element 3, Intermediate Heat Exchanger 4 and to constitute the R290 refrigerant circulation loop.Form the refrigerating medium closed circuit by Intermediate Heat Exchanger 4, pump 6, second heat exchanger 5.Because of 290 cold-producing mediums show Pressure, Concentration, Temperature in the certain space to people's danger, and the circulating line of indoor set does not have the R290 cold-producing medium inside, therefore can not cause harm to the people.
See Fig. 2, the off-premises station that the cooling air conditioner device is carried in the present invention roughly is divided into three chambeies, and Intermediate Heat Exchanger 4 and pump 6 are set in the chamber, top at top.Built-in first heat exchanger 2 and the blower fan in chamber, a left side, right chamber mainly is a compressor 1.The Intermediate Heat Exchanger 4 in chamber, off-premises station top is a double-tube heat exchanger.Double-tube heat exchanger is made of the metal tube of two concentrics, lining pipe 41 operation R290 cold-producing mediums, outer tube 42 operation water.
When air-conditioner energising refrigerating operaton, compressor is compressed into the R290 cold-producing medium in the air-conditioner outdoor unit R290 refrigerant gas of HTHP, 290 cold-producing mediums of HTHP are condensed into liquid 290 cold-producing mediums in first heat exchanger of off-premises station, enter telescopic Intermediate Heat Exchanger by choke valve, the cooling of the water cooling in the Intermediate Heat Exchanger outer tube is returned compressor.The water that is cooled in the Intermediate Heat Exchanger after the cooling enters second heat exchanger of air conditioner room unit under the driving of pump, carry out heat exchange at second heat exchanger and room air, refrigerating medium is drawn airborne heat, water temperature raises, water after heat absorption heats up is got back in the telescopic Intermediate Heat Exchanger, the circulation of beginning next round.
In order to prevent that R290 from bringing out firing of cold-producing medium during at high-temperature high-pressure state easily at cold-producing medium, a safety relief valve is installed in the condensation high-pressure side of off-premises station refrigerant loop (being located at usually between compressor to the first heat exchanger).This valve is made of two kinds of different metallicses of fusing point, the higher metal of fusing point is with being the valve body structure materials, the metal that fusing point is put is with being the system sealing materials, the fusible metal of safety relief valve can fuse when air-conditioning refrigeration system load pressure and temperature occur and exceeds setting value, system pressure discharges, and the R290 cold-producing medium is discharged in the atmospheric environment.
Referring to Fig. 3, Fig. 4, Intermediate Heat Exchanger is by lining pipe 41 and outer tube 42 sockets, and cold-producing medium flows in lining pipe 41, and refrigerating medium flows in outer tube 42.Outer tube is a stainless-steel pipe, and the lining pipe is copper pipe.Intermediate Heat Exchanger is wound in disk-like structure by after lining pipe and the outer tube socket on frock.In pipe be the helix tube of band double wedge screw thread, the double wedge screw thread extends along the tube wall spiral, is gradually open form shape.From the cross section of lining pipe the tooth depth of visible double wedge be in thickness of pipe wall 1/3rd or less than 1/3rd of lining thickness of pipe wall.Usually, in visible 6～10 double wedges on the cross section of pipe, in the structural design of pipe effectively increase heat exchange area, and promote cold-producing medium and refrigerating medium to flow along twisted string is spiral, help the heat exchange of cold-producing medium, make the heat exchange amount in unit interval and the unit pipe range higher, under identical heat exchange amount condition, can shorten the length of the about pipe of Intermediate Heat Exchanger.Simultaneously, the design of the double wedge twisted string of lining pipe can guarantee that the outer tube heat exchange is even, the phenomenon that can not cause outer tube to freeze.
Fig. 5, Fig. 6 are the schematic diagrames of the another kind of frame mode of Intermediate Heat Exchanger, and Intermediate Heat Exchanger 4 is bar tubuloses, are socketed to form by lining pipe 41 and outer tube 42, and the lining pipe is identical with the described embodiment of Fig. 4 with structure and Fig. 3 of outer tube.
For the R290 air-conditioning refrigeration system, we wish to reduce refrigerant charge as much as possible under the prerequisite of guaranteeing the air-conditioning efficiency.Therefore, during the design of first heat exchanger and second heat exchanger, abandoned internal diameter ф 9.52mm and the ф 7.0mm copper tube design scheme used always on the minitype air conditioner, and adopted ф 5.0mm copper pipe.According to the scientific principle of conducting heat, the heat exchanger heat transfer effect of the little caliber of thin-walled is better than bassoon.By repeatedly experiment, guaranteeing under the suitable situation of air-conditioning efficiency ability, confirm to adopt the heat exchanger of ф 5.0mm copper pipe to lack filled 20% than ф 7.0mm copper pipe heat exchanger R290 cold-producing medium.
The electronic devices and components of off-premises station all adopt the lonely design of going out, adiabatic insulating barrier shielding.According to the physical characteristic of R290, need be issued to naked light 450 ℃ condition and ignite, after electric elements adopted the arc extinguishing design, this flammable hidden danger can be eliminated.
In order to prevent that wearing out with tubing because of air-conditioner from appearring in air-conditioner when moving, the leakage phenomenon that the R290 refrigerant gas that seal fails causes takes place, electronic sensor to the R290 gas sensitization also is set in off-premises station, check valve is set on refrigerant loop, when leaking, electric control system is reported to the police, and the R290 cold-producing medium in the air-conditioning system is cut off the electricity supply behind compressor.
In addition, refrigerating medium of the present invention is except using water cheap and easy to get, can also use the latent heat phase transformation refrigerating medium of big cold transmission, as the frozen water mixed liquor, utilize the latent heat of phase change characteristics bigger of ice than the sensible heat of water, improve the cold transport capacity of refrigerating medium, can reduce the consumption of refrigerating medium, make system's miniaturization.In like manner, refrigerating medium also can be selected the strong sodium chloride solution of cold transmittability, ammonium salt solution etc.
Claims (7)
1. one kind carries the cooling air conditioner device, comprise the indoor set that is used to make the room air cycle heat exchange, the off-premises station that the heat of room air can be taken away, be located at first heat exchanger (2) and compressor (1) in the off-premises station, restricting element (3), be located at second heat exchanger (5) in the indoor set, it is characterized in that: also comprise the Intermediate Heat Exchanger (4) that is arranged on the off-premises station, by the compressor on the off-premises station (1), first heat exchanger (2), restricting element (3), the refrigerant circulation loop that Intermediate Heat Exchanger (4) is formed, by second heat exchanger (5) on the indoor set, pump (6), the refrigerating medium closed circuit that Intermediate Heat Exchanger on the off-premises station (4) is formed, described refrigerating medium and cold-producing medium are Intermediate Heat Exchanger (4) heat-shifts on off-premises station.
2. according to claim 1 year cooling air conditioner device is characterized in that: described Intermediate Heat Exchanger (4) is socketed to form by lining pipe (41) and outer tube (42), and mobile in the pipe (41) in described is cold-producing medium.
3. according to claim 2 year cooling air conditioner device is characterized in that: make cold-producing medium discharge outdoor safety relief valve when its gas pressure exceeds limit value being provided with on the refrigerant circulation loop.
4. according to claim 3 year cooling air conditioner device is characterized in that: described safety relief valve is located on the pipeline between compressor (1) and first heat exchanger (2).
5. according to claim 4 year cooling air conditioner device is characterized in that: described Intermediate Heat Exchanger (4) is located in the chamber, top of off-premises station.
6. according to claim 5 year cooling air conditioner device is characterized in that: the internal diameter of described first heat exchanger and second heat exchanger is between ф 4.9～ф 6mm.
7. according to claim 2 or 3 or 4 or 5 or 6 or 7 described years cooling air conditioner devices, it is characterized in that: pipe (41) is the helix tube of band double wedge screw thread in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010554429.7A CN102003740A (en) | 2010-11-23 | 2010-11-23 | Refrigerant-borne air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010554429.7A CN102003740A (en) | 2010-11-23 | 2010-11-23 | Refrigerant-borne air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN102003740A true CN102003740A (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010554429.7A Pending CN102003740A (en) | 2010-11-23 | 2010-11-23 | Refrigerant-borne air conditioner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032980A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Water chilling unit |
| CN103438599A (en) * | 2013-08-25 | 2013-12-11 | 龚颖 | Secondary transduction design scheme of household air conditioner |
| CN103673367A (en) * | 2013-12-08 | 2014-03-26 | 合肥天鹅制冷科技有限公司 | Forced circulation refrigerating system |
| CN103836723A (en) * | 2012-11-21 | 2014-06-04 | 刘庆明 | Refrigerant outdoor-circulation air conditioner |
| CN105627474A (en) * | 2016-03-02 | 2016-06-01 | 广东美的制冷设备有限公司 | Air conditioner |
| CN105757799A (en) * | 2016-03-14 | 2016-07-13 | 广东美的制冷设备有限公司 | Air conditioner utilizing combustible coolant and control method |
| CN109297099A (en) * | 2018-11-30 | 2019-02-01 | 常州工程职业技术学院 | Heat pipe manifold type air-conditioning |
| CN110050160A (en) * | 2016-12-09 | 2019-07-23 | 三菱电机株式会社 | Heat pump assembly |
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| EP2056033A1 (en) * | 2007-10-31 | 2009-05-06 | LG Electronics Inc. | Method for controlling motor of air conditioner and motor controller of the same |
| CN201589348U (en) * | 2010-02-04 | 2010-09-22 | 珠海格力电器股份有限公司 | Household air conditioner using secondary refrigerant and air conditioner outdoor unit |
| CN201589555U (en) * | 2009-12-31 | 2010-09-22 | 英特换热设备(浙江)有限公司 | Coaxial heat exchanger |
| CN201885321U (en) * | 2010-11-23 | 2011-06-29 | Tcl空调器(中山)有限公司 | Split air conditioner |
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| CN2460895Y (en) * | 1999-03-02 | 2001-11-21 | 大金工业株式会社 | Refrigerating plant |
| EP2056033A1 (en) * | 2007-10-31 | 2009-05-06 | LG Electronics Inc. | Method for controlling motor of air conditioner and motor controller of the same |
| CN201589555U (en) * | 2009-12-31 | 2010-09-22 | 英特换热设备(浙江)有限公司 | Coaxial heat exchanger |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032980A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Water chilling unit |
| CN103032980B (en) * | 2011-09-29 | 2016-01-06 | 艾默生网络能源有限公司 | A kind of handpiece Water Chilling Units |
| CN103836723A (en) * | 2012-11-21 | 2014-06-04 | 刘庆明 | Refrigerant outdoor-circulation air conditioner |
| CN103438599A (en) * | 2013-08-25 | 2013-12-11 | 龚颖 | Secondary transduction design scheme of household air conditioner |
| CN103673367A (en) * | 2013-12-08 | 2014-03-26 | 合肥天鹅制冷科技有限公司 | Forced circulation refrigerating system |
| CN105627474A (en) * | 2016-03-02 | 2016-06-01 | 广东美的制冷设备有限公司 | Air conditioner |
| CN105757799A (en) * | 2016-03-14 | 2016-07-13 | 广东美的制冷设备有限公司 | Air conditioner utilizing combustible coolant and control method |
| CN105757799B (en) * | 2016-03-14 | 2018-12-28 | 广东美的制冷设备有限公司 | Use the air conditioner and control method of combustible refrigerant |
| CN110050160A (en) * | 2016-12-09 | 2019-07-23 | 三菱电机株式会社 | Heat pump assembly |
| CN110050160B (en) * | 2016-12-09 | 2021-08-24 | 三菱电机株式会社 | Heat pump device |
| CN109297099A (en) * | 2018-11-30 | 2019-02-01 | 常州工程职业技术学院 | Heat pipe manifold type air-conditioning |
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Application publication date: 20110406 |