CN101086397A - Air conditioner refrigerant conversion device control method - Google Patents
Air conditioner refrigerant conversion device control method Download PDFInfo
- Publication number
- CN101086397A CN101086397A CN 200610014087 CN200610014087A CN101086397A CN 101086397 A CN101086397 A CN 101086397A CN 200610014087 CN200610014087 CN 200610014087 CN 200610014087 A CN200610014087 A CN 200610014087A CN 101086397 A CN101086397 A CN 101086397A
- Authority
- CN
- China
- Prior art keywords
- air
- refrigerant
- conditioner
- conversion device
- device control
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a coolant conversion device control method of an air-conditioner, which opens and closes the high pressure/ low pressure valve for converting the coolant flow path sequentially when the refrigerating/ heat-production operation model is converted. The invention avoids the coolant conflict owing to converting the flow direction and the noise owing to the pressure difference of the coolant, what's more, completing opening the electromechanical expansion valve makes the coolant with the finite pressure difference diffuse more quickly when the refrigerating/ heat-production operation model is converted, and the indoor fan is opened after the finite time, so the invention avoids that the cold air or the hot air is provided for the indoor.
Description
Technical field
The present invention relates to a kind of refrigerant conversion device control method of air-conditioner, particularly relate to a kind of high voltage/low voltage valve that when carrying out the conversion of refrigerating/heating operational mode, can open and close successively on the refrigerant conversion device, can reduce the refrigerant conversion device control method of the air-conditioner of the noise that causes because of the refrigerant conflict thus.
Background technology
Air-conditioner generally includes compressor, outdoor heat converter, expansion valve and indoor heat converter, and it is to utilize the circulation of refrigerant and device that the interior space is freezed or heated.Fig. 7 is that refrigerant conversion device is formed schematic diagram in the air-conditioner of prior art.Fig. 8 carries out each device control procedure curve map in the air-conditioner of refrigerating/heating operational mode when conversion prior art.As Fig. 7, shown in Figure 8, in the air-conditioner of this prior art, when air-conditioner carried out refrigerating operaton, indoor heat converter 1 had the effect of evaporimeter, and it can make the room air refrigerant inner with it carry out heat exchange, cools off room air thus; And when air-conditioner carried out heating operation, indoor heat converter 1 had the effect of condenser, and it can make the room air refrigerant inner with it carry out heat exchange, improves the temperature of room air thus.Be connected on the indoor heat converter 1 the refrigerant pipe by inner stream when air-conditioner carries out refrigerating operaton by the low pressure refrigerant pipe 2 of refrigerant and when air-conditioner carries out heating operation inner stream form by the high pressure refrigerant pipe 3 of refrigerant, and low pressure and high pressure refrigerant pipe 2, be respectively equipped with on 3 and be used to open and close low pressure and high pressure refrigerant pipe 2,3 low pressure and high pressure valve 4,5.When air-conditioner carries out refrigerating operaton, the refrigerant that expands through electromagnetic expanding valve 6 will evaporate on indoor heat converter 1, and by unshowned compressor in low pressure refrigerant pipe 2 flow graphs, the high pressure valve 5 on the high pressure refrigerant pipe 3 then is in closed condition then.In contrast, when air-conditioner carries out heating operation, the flow direction of refrigerant is opposite during with refrigerating operaton, promptly, to on indoor heat converter 1, carry out condensation behind the refrigerant process high pressure refrigerant pipe 3 of compressed machine compression, unshowned outdoor heat converter in the flow graph then, low pressure valve 2 then is in closed condition.That is, be arranged on the effect that low pressure on low pressure and the high pressure refrigerant pipe 2,3 and high pressure valve 4,5 have refrigerant conversion device, it can open and close respectively when air-conditioner carry out the refrigerating/heating operation, thereby forms circulation passage.But, when the air-conditioner of this prior art converts the heating operation pattern to by the refrigerating operaton pattern or when the heating operation pattern converts the refrigerating operaton pattern to, because low pressure and high pressure valve 4 on the refrigerant conversion device, 5 need change the On/Off state simultaneously, therefore can produce noise because of the pressure differential of refrigerant.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide and a kind ofly can carry out the conversion of refrigerating/heating operational mode at air-conditioner and the time open and close valve on the refrigerant conversion device successively, can reduce the refrigerant conversion device control method of the air-conditioner of the noise that the conflict because of refrigerant causes thus.
In order to achieve the above object, the refrigerant conversion device control method of air-conditioner provided by the invention is to open and close the high voltage/low voltage valve that is used to change the refrigerant flow path when the refrigerating/heating operational mode is changed successively.
When the refrigerating operaton pattern converts the heating operation pattern to, open the high pressure valve that originally was in closed condition at air-conditioner, and be converted to closed condition through the low pressure valve that will originally be in opening after the official hour.
When the heating operation pattern converts the refrigerating operaton pattern to, open the low pressure valve that originally was in closed condition at air-conditioner, and be converted to closed condition through the high pressure valve that will originally be in opening after the official hour.
When converting the heating operation pattern to, the refrigerating operaton pattern make the indoor electromagnetic expanding valve that is arranged on the air-conditioner be in the complete opening state at air-conditioner.
When the high voltage/low voltage valve is opened simultaneously and when causing gaseous state and liquid refrigerants to mix, stopped to be arranged on the operation of the indoor fan on the indoor set.
After the refrigerating/heating operational mode of air-conditioner converts, restart indoor fan through special time.
The refrigerant conversion device control method of air-conditioner provided by the invention is to carry out the conversion of refrigerating/heating operational mode at air-conditioner the time to open and close the high voltage/low voltage valve that is used to change the refrigerant flow path successively, thereby can prevent because the noise of changing refrigerant conflict that flow direction causes and causing because of the pressure differential of refrigerant.In addition, because electromagnetic expanding valve complete opening during the conversion of refrigerating/heating operational mode, therefore the refrigerant diffusion meeting that has the certain pressure difference is quicker, and through restarting indoor fan behind the special time, thereby can prevent unexpected cold air or the hot gas that the mixing because of refrigerant causes and offer indoor phenomenon.
Description of drawings
Fig. 1 is a multi-split air conditioner birds-eye view provided by the invention.
Fig. 2 is that multi-split air conditioner provided by the invention is formed schematic diagram.
Fig. 3 is that refrigerant conversion device is formed schematic diagram in the multi-split air conditioner provided by the invention.
Each device control procedure curve map in the multi-split air conditioner provided by the invention when Fig. 4 changes for carrying out the refrigerating/heating operational mode.
Fig. 5 is a refrigerant flow regime schematic diagram in the refrigerant conversion device of multi-split air conditioner provided by the invention when carrying out refrigerating operaton.
Fig. 6 is a refrigerant flow regime schematic diagram in the refrigerant conversion device of multi-split air conditioner provided by the invention when carrying out heating operation.
Fig. 7 is that refrigerant conversion device is formed schematic diagram in the air-conditioner of prior art.
Fig. 8 carries out each device control procedure curve map in the air-conditioner of refrigerating/heating operational mode when conversion prior art.
Critical piece label in the accompanying drawing:
51: indoor heat converter 120: high pressure refrigerant pipe
122: high pressure valve 130: the low pressure refrigerant pipe
132: low pressure valve 54: indoor electromagnetic expanding valve
30,40: the refrigerant pipe
The specific embodiment
Be elaborated below in conjunction with the refrigerant conversion device control method of drawings and Examples to air-conditioner provided by the invention.Fig. 1 is a multi-split air conditioner birds-eye view provided by the invention.Fig. 2 is that multi-split air conditioner provided by the invention is formed schematic diagram.Fig. 3 is that refrigerant conversion device is formed schematic diagram in the multi-split air conditioner provided by the invention.Each device control procedure curve map in the multi-split air conditioner provided by the invention when Fig. 4 changes for carrying out the refrigerating/heating operational mode.Fig. 5 is a refrigerant flow regime schematic diagram in the refrigerant conversion device of multi-split air conditioner provided by the invention when carrying out refrigerating operaton.Fig. 6 is a refrigerant flow regime schematic diagram in the refrigerant conversion device of multi-split air conditioner provided by the invention when carrying out heating operation.As shown in Figure 1 and Figure 2, multi-split air conditioner provided by the invention is made of several indoor sets 11,12,13,14 and the off- premises station 21,22,23 that are arranged in the building that link to each other by refrigerant pipe 30,40.Off- premises station 21,22,23 can be according to indoor set 11, the requirement of a certain equipment in 12,13,14 and starting, and along with indoor set 11,12,13, the increase of 14 desired refrigerating/heating capacity, off- premises station 21,22,23 operation quantity and be arranged on off-premises station 21, the operation quantity of compressor also increases together on 22,23.Wherein, described indoor set 11,12,13,14 comprise: can make the refrigerant of its internal flow and the indoor heat converter 51 that room air carries out heat exchange; Be arranged on indoor heat converter 51 around, can make room air produce the indoor fan 52 of circulation; When air-conditioner carries out refrigerating operaton, the indoor electromagnetic expanding valve 54 that the refrigerant that flows to indoor heat converter 51 is expanded.Described off- premises station 21,22,23 is made of the the 1st, the 2, the 3rd off- premises station 21,22,23, and every off-premises station comprises: the fluid reservoir 61 that can draw gaseous coolant from the refrigerant that indoor set is discharged; The gaseous coolant of drawing from fluid reservoir 61 can be carried out compressor for compressing 62,63,67; With compressor 62,63,67 are connected, and are used to guide the cross valve 65 of the refrigerant flow direction after compressed machine 62,63,67 compresses; Can make through cross valve 65 and flow into the outdoor heat converter 70 that its inner refrigerants and outdoor air carry out heat exchange.Wherein, the 1st off-premises station 21 is provided with frequency-changeable compressor 62 and constant speed compressor 63, and only is provided with several constant speed compressors 67 on the 2nd, the 3 off-premises station.Frequency-changeable compressor 62 is the compressor that can change the refrigerant compression volume, and 63,67 of constant speed compressors are the constant compressor of refrigerant compression volume.In addition, the frequency-changeable compressor 62 that is arranged on the 1st off-premises station 21 is born 70% compression volume, and constant speed compressor 63 is born 30% remaining compression volume, and 67 of the constant speed compressors in the 2nd, the 3 off- premises station 22,23 are respectively born 50% compression volume.In addition, be connected compressor 62,63,67 and cross valve 65 between the refrigerant pipe be provided with oil eliminator 64, promptly oil eliminator 64 is connected compressor 62,63,67 suction side.Simultaneously, oil eliminator 64 and compressor 62,63 are provided with between 67 and are used for detecting from compressor 62,63 pressure sensor 107 of the 67 refrigerant pressure of discharging.Oil eliminator 64 can be from compressor 62,63, separates fuel-displacedly in 67 refrigerants of discharging, and isolated oil is offered compressor 62,63,67, thereby makes compressor 62,63, the oil mass that 67 inner sustain is certain.And, also be connected between the suction side of oil eliminator 64 and compressor 62,63,67 by capillary 66, oil is flowed by capillary 66.And the refrigerant pipe 30 that the refrigerant that outdoor heat converter 70 is discharged can be caused indoor heat converter 51 is provided with the outdoor electromagnetic expanding valve 74 that refrigerant is expanded, the apparatus for supercooling 80 and the liquid injection apparatus 90 that the refrigerant that flows to indoor heat converter 51 can be cooled off when air-conditioner carries out refrigerating operaton.When air-conditioner carried out refrigerating operaton, outdoor electromagnetic expanding valve 74 was complete openings, so just can not be to expanding through outdoor heat converter 70 condensed refrigerants, and just allow it pass through; And when air-conditioner carried out heating operation, outdoor electromagnetic expanding valve 74 was opened the size of regulation, thereby the refrigerant through indoor heat converter 51 condensations can be expanded to vaporific liquid before inflow outdoor heat exchanger 70.Simultaneously, refrigerant pipe 30 " be provided be used to remove refrigerant pipe 30 " drier 110 of inner moisture, the refrigerant by drier 110 can be at refrigerant pipe 30 " go up and flow to indoor heat converter 51 after circuitous.
As shown in Figure 3, air-conditioner provided by the invention comprises that the refrigerant that can make room air and its internal flow carries out the indoor heat converter 51 of heat exchange; Be connected high pressure refrigerant pipe 120 and low pressure refrigerant pipe 130 on the indoor heat converter 51; Be separately positioned on high pressure valve 122 and low pressure valve 132 on high pressure refrigerant pipe 120 and the low pressure refrigerant pipe 130.Wherein, high voltage/low voltage refrigerant pipe 120,130 and high voltage/low voltage valve 122,132nd, the refrigerant conversion device of change refrigerant flow direction when air-conditioner carries out the conversion of refrigerating/heating operational mode.With indoor heat converter 51 is benchmark, and the opposition side of refrigerant conversion device is provided with indoor electromagnetic expanding valve 54.That is, indoor set 11,12,12,14 and off- premises station 21,22, be provided with the refrigerant conversion device that is used to change the refrigerant flow direction between 23.
Describe the refrigerating/heating process of air-conditioner provided by the invention in detail below in conjunction with Fig. 2 to Fig. 6: when utilizing air-conditioner provided by the invention that indoor environment is freezed, as shown in Figures 2 and 3, be in a liquid state to the refrigerant the indoor electromagnetic expanding valve 54 from outdoor heat converter 70, and from indoor heat converter 51 to compressor 62,63, refrigerant between 67 then is gaseous state, therefore are liquid refrigerants in 30 internal flows of refrigerant pipe, and what flow on the refrigerant pipe 120,130 after indoor heat converter 51 is gaseous coolant.At this moment, the low pressure valve 132 that is arranged on the low pressure refrigerant pipe 130 of refrigerant conversion device will be in opening, and the high pressure valve 122 that is arranged on the high pressure refrigerant pipe 120 then is in closed condition.In addition, refrigerant conversion device is to be controlled by the not shown control device that is arranged on the indoor set, and at this moment, indoor electromagnetic expanding valve 54 is opened certain degree under the control of control device, thereby can expand to refrigerant.And when utilizing air-conditioner provided by the invention that indoor environment is heated, as shown in Figure 6, the flow direction the when flow direction of refrigerant will carry out refrigerating operaton with air-conditioner is opposite.The high-pressure gaseous refrigerant of compressed machine compression will flow to indoor heat converter 51 along high pressure refrigerant pipe 120, and in indoor heat converter 51, carry out condensation, the latent heat that is produced by the refrigerant condensation in this process will be discharged in the indoor environment, thereby the temperature of the interior space is raise.At this moment, high pressure valve 122 is in opening, so that refrigerant is mobile by high pressure refrigerant pipe 120, and in order to prevent that adverse current from appearring in refrigerant, 132 of low pressure valves are in closed condition.And indoor electromagnetic expanding valve 54 is that condensed refrigerant is flowed in the refrigerant pipe 30.In addition, irrelevant with the refrigerating/heating operation of air-conditioner, the liquid refrigerant that flows all the time in the refrigerant pipe 30, and the refrigerant of the gaseous state that then flows all the time in the high voltage/low voltage refrigerant pipe 122,132.
Below in conjunction with Fig. 2 air-conditioner being carried out refrigerating/heating operational mode when conversion refrigerant conversion device control method provided by the invention describes: when air-conditioner when the refrigerating operaton pattern converts the heating operation pattern to, be installed in the circulation that the control device on the indoor set will come the switching air conditioner device according to user's operation and detected indoor temperature.Promptly, when air-conditioner carries out refrigerating/heating operation conversion, indoor electromagnetic expanding valve 54 will be according to the signal of control device from opening the state that to a certain degree state is converted to complete opening, and high pressure valve 122 will convert opening to from closed condition in the conversion of refrigerating/heating operational mode.At this moment, low pressure valve 132 is that with the difference of prior art its opening is constant in the conversion of refrigerating/heating operational mode, but is converted to closed condition by opening again after having passed through official hour.Promptly, if high voltage/low voltage valve 122 in the conversion of refrigerating/heating operational mode, 132 change open and-shut mode simultaneously, the flow direction of refrigerant will be changed simultaneously, the afoul phenomenon of refrigerant will be occurred in the inside of high voltage/low voltage refrigerant pipe 120,130 like this, not only noise can be caused, and also will produce conflict at the liquid refrigerants of refrigerant pipe 30 internal flows with at the gaseous coolant of high pressure refrigerant pipe 120 internal flows, on indoor heat converter 51, produce noise thus.And, if high voltage/low voltage valve 122,132 is changed open and-shut mode simultaneously, because the pressure differential of gaseous coolant also can produce noise on high voltage/low voltage valve 122,132.Therefore, when air-conditioner carries out the conversion of refrigerating/heating operational mode, refrigerant conversion device control method provided by the invention is that the gaseous coolant that flows into by high pressure valve 122 is flow in low pressure refrigerant pipe 130 and the indoor heat converter 51, just can not produce violent pressure thus on indoor heat converter 51 and the low pressure refrigerant pipe 130 and change.That is, the high-pressure gaseous refrigerant that flows into from high pressure refrigerant pipe 120 will be diffused into indoor heat converter 51 and the low pressure refrigerant pipe 130, thereby make pressure balance, under this state pressure slowly be risen then.Through closing low pressure valve 132 after the official hour again, at this moment the pressure differential of 130 of high pressure refrigerant pipe 120 and low pressure refrigerant pipes will diminish, the noise problem that can avoid the conflict because of refrigerant to cause thus.Present embodiment is to close low pressure valve 132 after high pressure valve 122 is opened 20 seconds, and stops to be arranged on indoor set 11,12 under the state that high voltage/low voltage valve 122,132 is opened simultaneously, the operation of the indoor fan 52 on 13,14.Promptly, at high voltage/low voltage valve 122, under 132 situations of opening simultaneously, gaseous state/liquid refrigerants will mix on indoor heat converter 51, therefore can't carry out appropriate temperature control, so in the conversion of refrigerating/heating operational mode, should stop the operation of indoor fan 52, and close low pressure valve 132 and restarting indoor fan 52 through behind the official hour.Present embodiment is a priming chamber internal fan 52 once more after high pressure valve 122 is opened 30 seconds.Simultaneously, when air-conditioner carries out refrigerating/heating operational mode when conversion, indoor electromagnetic expanding valve 54 impels refrigerant pressure to reach balance fast complete opening thus.Though do not describe simultaneously, air-conditioner heats/and the process of refrigerating operaton pattern conversion is just in time opposite with said process, promptly at first open low pressure valve 132, and through closing high pressure valve 122 after the official hour, so can prevent the noise that conflict and pressure differential owing to refrigerant cause.
Claims (6)
1, a kind of refrigerant conversion device control method of air-conditioner, it is characterized in that: the refrigerant conversion device control method of described air-conditioner is to open and close the high voltage/low voltage valve (122,132) that is used to change the refrigerant flow path when the refrigerating/heating operational mode is changed successively.
2, the refrigerant conversion device control method of air-conditioner according to claim 1, it is characterized in that: at air-conditioner when the refrigerating operaton pattern converts the heating operation pattern to, open the high pressure valve (122) that originally was in closed condition, and be converted to closed condition through the low pressure valve (132) that will originally be in opening after the official hour.
3, the refrigerant conversion device control method of air-conditioner according to claim 1, it is characterized in that: at air-conditioner when the heating operation pattern converts the refrigerating operaton pattern to, open the low pressure valve (132) that originally was in closed condition, and be converted to closed condition through the high pressure valve (122) that will originally be in opening after the official hour.
4, the refrigerant conversion device control method of air-conditioner according to claim 1 is characterized in that: make the indoor electromagnetic expanding valve (54) that is arranged on the air-conditioner be in the complete opening state when the refrigerating operaton pattern converts the heating operation pattern at air-conditioner.
5, according to the refrigerant conversion device control method of each described air-conditioner in the claim 1 to 4, it is characterized in that: when high voltage/low voltage valve (122,132) open simultaneously and when causing gaseous state and liquid refrigerants to mix, stop to be arranged on indoor set (11,12, the operation of the indoor fan 13,14) (52).
6, the refrigerant conversion device control method of air-conditioner according to claim 1 is characterized in that: after the refrigerating/heating operational mode of air-conditioner converts, restart indoor fan (52) through special time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014087 CN101086397A (en) | 2006-06-06 | 2006-06-06 | Air conditioner refrigerant conversion device control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014087 CN101086397A (en) | 2006-06-06 | 2006-06-06 | Air conditioner refrigerant conversion device control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101086397A true CN101086397A (en) | 2007-12-12 |
Family
ID=38937490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610014087 Pending CN101086397A (en) | 2006-06-06 | 2006-06-06 | Air conditioner refrigerant conversion device control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101086397A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422092A (en) * | 2009-05-08 | 2012-04-18 | 三菱电机株式会社 | Air conditioning device |
| CN108413586A (en) * | 2018-01-22 | 2018-08-17 | 宁波奥克斯电气股份有限公司 | The method for noise reduction control and multi-connected machine of multi-connected machine |
| CN109798628A (en) * | 2019-01-25 | 2019-05-24 | 广东美的暖通设备有限公司 | The control method and device of coolant distribution device pressure difference |
| CN110520676A (en) * | 2017-03-17 | 2019-11-29 | 瑞美制造公司 | Modular cooling system for skyscraper |
-
2006
- 2006-06-06 CN CN 200610014087 patent/CN101086397A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422092A (en) * | 2009-05-08 | 2012-04-18 | 三菱电机株式会社 | Air conditioning device |
| CN102422092B (en) * | 2009-05-08 | 2014-11-05 | 三菱电机株式会社 | Air conditioning device |
| CN110520676A (en) * | 2017-03-17 | 2019-11-29 | 瑞美制造公司 | Modular cooling system for skyscraper |
| CN108413586A (en) * | 2018-01-22 | 2018-08-17 | 宁波奥克斯电气股份有限公司 | The method for noise reduction control and multi-connected machine of multi-connected machine |
| CN108413586B (en) * | 2018-01-22 | 2020-02-21 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner noise reduction control method and multi-split air conditioner |
| CN109798628A (en) * | 2019-01-25 | 2019-05-24 | 广东美的暖通设备有限公司 | The control method and device of coolant distribution device pressure difference |
| CN109798628B (en) * | 2019-01-25 | 2021-01-05 | 广东美的暖通设备有限公司 | Method and device for controlling pressure difference of refrigerant flow dividing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9377225B2 (en) | Outdoor heat exchanger and air conditioner comprising the same | |
| CN102748808B (en) | The control method of multi-air conditioner and this multi-air conditioner | |
| CN105910323A (en) | Refrigerating system, refrigerating unit and refrigerating control method for refrigerating unit | |
| CN101512246A (en) | Refrigeration device | |
| CN102538298B (en) | Heat pump and method of controlling the same | |
| CN109579344A (en) | A kind of air-conditioning system and its control method that can prevent compressor liquid hammer | |
| CN104110735A (en) | Air Conditioner And Method For Controlling The Same | |
| CN101057116B (en) | Cooling device and a control method | |
| CN101086397A (en) | Air conditioner refrigerant conversion device control method | |
| US8205463B2 (en) | Air conditioner and method of controlling the same | |
| KR101161381B1 (en) | Refrigerant cycle apparatus | |
| JP2005214444A (en) | Refrigerator | |
| JP2005214575A (en) | Refrigerator | |
| US9267716B2 (en) | Heat exchanger and an air conditioning system having the same | |
| CN211552102U (en) | Multi-connected air conditioning system | |
| US20100131115A1 (en) | Controlling method of air conditioner | |
| KR20150109746A (en) | Air Conditioner and Controlling method for the same | |
| CN1904515A (en) | Commercial use air conditioner | |
| KR101769821B1 (en) | Air conditioner and Controlling method for the same | |
| KR101329753B1 (en) | Air conditioning system | |
| KR20140123819A (en) | Air Conditioner | |
| CN205718041U (en) | A kind of refrigeration system, refrigeration unit | |
| KR101908307B1 (en) | Refrigeration system | |
| KR100575693B1 (en) | Air conditioner with sub compression loop | |
| KR101450546B1 (en) | Air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |