CN102734989B - Heat pump air conditioning system and method for quickly discharging liquid stored in gas-liquid separator - Google Patents
Heat pump air conditioning system and method for quickly discharging liquid stored in gas-liquid separator Download PDFInfo
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- CN102734989B CN102734989B CN201110091481.8A CN201110091481A CN102734989B CN 102734989 B CN102734989 B CN 102734989B CN 201110091481 A CN201110091481 A CN 201110091481A CN 102734989 B CN102734989 B CN 102734989B
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Abstract
The invention relates to a heat pump air conditioning system and a heat pump air conditioning method for quickly discharging liquid stored in a gas-liquid separator. The heat pump air conditioning system at least comprises a compressor and a gas-liquid separator, wherein a gas outlet of the gas-liquid separator is connected with a gas inlet of a compressor, the heat pump air conditioning system is characterized by further comprising an ejector, wherein a nozzle of the ejector is connected with a gas outlet of the compressor, a pressure expansion segment of the ejector is connected with the gas inlet of the compressor, and a suction chamber of the ejector is connected with a liquid outlet of the gas-liquid separator. High pressure gas discharged from the compressor enters the ejector to form low pressure in the ejector, so that refrigerant liquid in the gas-liquid separator can be sucked in the ejector, the refrigerant liquid is mixed with refrigerant gas to form pressure expansion in the ejector, and the refrigerant liquid is dispersed in the compressor. The heat pump air conditioning system provided by the invention can quickly discharge the refrigerant liquid in the gas-liquid separator to a circulating system of an air conditioner, thereby reducing the operation cost and improving the operation efficiency of a machine set.
Description
Technical field
The present invention relates to field of air conditioning, heat pump type air conditioning system and the method for the liquid particularly accumulating in a kind of quick drainage gas-liquid separator.
Background technology
Air-conditioning can be divided into single cold type and pump type heat etc. according to function.Single cold type air-conditioning can only freeze, and can not heat, and is applicable to not need winter the southern area of heating.Heat pump type air conditioner can freeze, heat, and is applicable to China's overwhelming majority area.Wherein, heat pump air conditioner is adopted by users with the feature that it not only can freeze but also can heat, the scope of application is wider.As shown in Figure 1, heat pump type air conditioning system is comprised of with the indoor heat exchanger 200 being connected with off-premises station 100 off-premises station 100, and off-premises station 100 main composition parts comprise compressor 110, gas-liquid separator 120, four-way change-over valve 130, outdoor heat exchanger 140 and throttling arrangement 150 etc.After starting initial stage of air-conditioning or defrost and finishing, more cold-producing medium is gathered in the interior meeting of gas-liquid separator 120, and the time that these cold-producing mediums need to be longer could be drawn into and in refrigeration system, participate in kind of refrigeration cycle by compressor.Therefore, within the longer time, the cold-producing medium that participating in refrigeration system circulates turns is less, and when serious, the phenomenon of fluorine will appear lacking in refrigeration system, and the efficiency of air-conditioning reduces, and low-pressure failure alarm even may occur.
At present, in order to solve the ubiquitous problem of above-mentioned heat pump air conditioner, the general method that increases refrigerant charge that adopts is processed in the industry, but this will increase use cost, and can not improve the efficiency of air-conditioning.
Therefore, be necessary to propose a kind of heat pump type air conditioning system, the cold-producing medium accumulating in drainage gas-liquid separator fast, avoids the low voltage failure causing due to scarce fluorine in refrigeration system.
Summary of the invention
In summary of the invention part, introduced the concept of a series of reduced forms, this will further describe in specific embodiment part.Summary of the invention part of the present invention does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to determine technical scheme required for protection.
The heat pump type air conditioning system of the liquid accumulating in a kind of quick drainage gas-liquid separator, comprise off-premises station and the indoor heat exchanger being connected with described off-premises station, described off-premises station comprises compressor, gas-liquid separator, four-way change-over valve, outdoor heat exchanger and throttling arrangement, it is characterized in that, the bottom of described gas-liquid separator is provided with liquid outlet, described heat pump type air conditioning system also comprises auxiliary pumping equipment, described auxiliary pumping equipment connects respectively the liquid outlet of described gas-liquid separator, the gas outlet of described compressor and air inlet, described auxiliary pumping equipment extracts the liquid in described gas-liquid separator by the liquid outlet of gas-liquid separator, described liquid enters in described compressor by the air inlet of described compressor after mixing with from the gas of described compressor outlet.
According to another aspect of the present invention, described auxiliary pumping equipment comprises injector, the nozzle of described injector connects the gas outlet of described compressor, and the diffuser of described injector connects the air inlet of described compressor, and the suction chamber of described injector connects the liquid outlet of described gas-liquid separator.
According to another aspect of the present invention, between the gas outlet of described compressor and the nozzle of described injector, be provided with valve.
According to another aspect of the present invention, between the diffuser of described injector and the air inlet of described compressor, be provided with check valve, so that the diffuser of described injector to the air inlet of described compressor is one-way conduction state.
According to another aspect of the present invention, between the suction chamber of described injector and the liquid outlet of described gas-liquid separator, be provided with check valve, so that the liquid outlet of described gas-liquid separator is extremely one-way conduction state between the suction chamber of described injector.
According to another aspect of the present invention, described valve is magnetic valve or motor-driven valve.
According to another aspect of the present invention, between the diffuser of described injector and the air inlet of compressor, capillary is set.
The method of the liquid accumulating in a kind of heat pump type air conditioning system drainage gas-liquid separator utilizing as described in above any one, it is characterized in that comprising: the degree of superheat that detects the suction temperature of described compressor, if the degree of superheat of described suction temperature is greater than or equal to five degree, start described auxiliary pumping equipment, make described auxiliary pumping equipment extract the liquid in described gas-liquid separator, and described liquid is entered in described heat pump type air conditioning system, if when the degree of superheat of described suction temperature is less than five degree or the shutdown of described heat pump type air conditioning system, close described auxiliary pumping equipment.
According to another aspect of the present invention, described startup or close auxiliary pumping equipment by opening or valve-off is realized.
The present invention has added the auxiliary pumping equipment with injector in existing heat pump type air conditioning system, this injector is connected with the gas outlet of compressor, by the gases at high pressure of controlling compressor discharge, enter injector, in the inner low pressure that forms of injector, thereby refrigerant liquid in gas-liquid separator is sucked in injector, thus this refrigerant liquid mix with refrigerant gas after in injector diffusion diffuse in compressor.Heat pump type air conditioning system structure of the present invention can enter the refrigerant liquid in gas-liquid separator in the circulatory system of air-conditioning fast, thereby avoids the repeatedly injection of cold-producing medium, has reduced operating cost and has improved the running efficiency of unit.
Accompanying drawing explanation
Following accompanying drawing of the present invention is used for understanding the present invention in this as a part of the present invention.Shown in the drawings of embodiments of the invention and description thereof, be used for explaining principle of the present invention.In the accompanying drawings,
Fig. 1 is the schematic diagram of existing heat pump type air conditioning system structure;
Fig. 2 is the first schematic diagram according to heat pump type air conditioning system structure of the present invention;
Fig. 3 is the second schematic diagram according to heat pump type air conditioning system structure of the present invention.
The specific embodiment
In the following description, a large amount of concrete details have been provided to more thorough understanding of the invention is provided.But, it will be apparent to one skilled in the art that the present invention can be implemented without one or more these details.In other example, for fear of obscuring with the present invention, for technical characterictics more well known in the art, be not described.
Below by embodiment also by reference to the accompanying drawings, technical scheme of the present invention is illustrated.
As shown in Figure 2, the indoor heat exchanger 200 that heat pump type air conditioning system according to the present invention comprises off-premises station 100 and is connected by pipeline with off-premises station 100.Off-premises station 100 comprises compressor 110, gas-liquid separator 120, four-way change-over valve 130, outdoor heat exchanger 140, throttling arrangement 150 and auxiliary pumping equipment 160, wherein four-way change-over valve 130 the first port respect to one another is connected respectively the second port 202 of indoor heat exchanger 200 and the input of outdoor heat exchanger 140 with the second port, the output of outdoor heat exchanger 140 connects the input of throttling arrangement 150, and the output of throttling arrangement 150 connects the first port 201 of indoor heat exchanger 200.In addition, four-way change-over valve 130 the 3rd port respect to one another is connected respectively the gas outlet 111 of compressor 110 and the air inlet 121 of gas-liquid separator 120 with the 4th port, and the gas outlet 122 of gas-liquid separator 120 connects the air inlet 112 of compressor 110.The bottom of gas-liquid separator 120 is provided with liquid outlet 123.
As shown in Figure 3, auxiliary pumping equipment 160 comprises injector 161, the nozzle 161a of injector 161 is connected with the gas outlet 111 of compressor 110 by pipeline, and is provided with valve 162 on the pipeline between the nozzle 161a of injector 161 and the gas outlet 111 of compressor 110.The diffuser 161b of injector 161 is connected with the air inlet 112 of compressor 110 by pipeline, that is to say, the diffuser 161b of injector 161 is connected on the pipeline between the gas outlet 122 of gas-liquid separator 120 and the air inlet 112 of compressor 110 by pipeline, and on the pipeline between the diffuser 161b of injector 161 and the air inlet 112 of compressor 110, is provided with check valve 163 so that injector 161 to the air inlet 112 of compressor 110 is one-way conduction state.The suction chamber 161c of injector 161 is connected with the liquid outlet 123 of gas-liquid separator 120, and between the suction chamber 161c of injector 161 and the liquid outlet 123 of gas-liquid separator 120, is provided with check valve 164 so that gas-liquid separator 120 to the liquid outlet 123 of injector 161 is one-way conduction state.
In above-described embodiment, valve 162 can adopt magnetic valve or motor-driven valve.
In above-described embodiment, as shown in Figure 3, can also between the diffuser 161b of injector 161 and the air inlet 112 of compressor 110, capillary 165 be set, the amount of liquid control that capillary 165 can make to enter compressor 110 in allowed limits.In addition it will be appreciated by persons skilled in the art that, can also be by selecting suitable injector model to control the amount of liquid that enters compressor 110.
The present invention is not construed as limiting the specific embodiment of auxiliary pumping equipment 160, it will be understood by those skilled in the art that, can also adopt other device as auxiliary pumping equipment 160, as long as can extract the refrigerant liquid accumulating in gas-liquid separator 120, and this refrigerant liquid is entered in cooling system just passable.
While entering the initial stage of normal operation after unit starting initial stage or defrost, oil return running, the refrigerant liquid in gas-liquid separator need to be drained in refrigeration system.
Describe in detail and utilize above-mentioned heat pump type air conditioning system to carry out the method for the refrigerant liquid accumulating in quick drainage gas-liquid separator below:
Detect the degree of superheat of the suction temperature of described compressor 110, if the degree of superheat of suction temperature is greater than or equal to five degree, start auxiliary pumping equipment 160, make the higher pressure refrigerant gas expanding in compressor 110 enter auxiliary pumping equipment 160, auxiliary pumping equipment 160 extracts the liquid in described gas-liquid separator 120, and described liquid is entered in described heat pump type air conditioning system;
If when the degree of superheat of suction temperature is less than five degree or the shutdown of described heat pump type air conditioning system, close auxiliary pumping equipment 160.
Described startup or while closing auxiliary pumping equipment 160 by opening or valve-off is realized.When auxiliary pumping equipment adopts the injector described in embodiment one to realize, above-mentioned valve is valve 162.
The present invention has added the auxiliary drain means with injector in existing heat pump air conditioner off-premises station, this injector is connected with the gas outlet of compressor, by the gases at high pressure of controlling compressor discharge, enter injector, in the inner low pressure that forms of injector, thereby refrigerant liquid in gas-liquid separator is sucked in injector, thus this refrigerant liquid mix with refrigerant gas after in injector diffusion diffuse in compressor.Heat pump type air conditioning system structure of the present invention can enter the refrigerant liquid accumulating in gas-liquid separator in the circulatory system of air-conditioning fast, thereby avoids the repeatedly injection of cold-producing medium, has reduced operating cost and has improved the running efficiency of heat pump type air conditioning system.
The present invention is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the present invention to be limited in described scope of embodiments.In addition it will be appreciated by persons skilled in the art that the present invention is not limited to above-described embodiment, according to instruction of the present invention, can also make more kinds of variants and modifications, these variants and modifications all drop in the present invention's scope required for protection.Protection scope of the present invention is defined by the appended claims and equivalent scope thereof.
Claims (5)
1. the heat pump type air conditioning system of the liquid accumulating in a quick drainage gas-liquid separator, comprise off-premises station (100) and the indoor heat exchanger (200) being connected with described off-premises station (100), described off-premises station (100) comprises compressor (110), gas-liquid separator (120), four-way change-over valve (130), outdoor heat exchanger (140) and throttling arrangement (150), it is characterized in that, the bottom of described gas-liquid separator (120) is provided with liquid outlet (123), described heat pump type air conditioning system also comprises auxiliary pumping equipment (160), described auxiliary pumping equipment (160) connects respectively the liquid outlet (123) of described gas-liquid separator (120), the gas outlet (111) of described compressor (110) and air inlet (112), described auxiliary pumping equipment (160) extracts the liquid in described gas-liquid separator (120) by the liquid outlet (123) of gas-liquid separator (120), described liquid with from the gas of described compressor (110) gas outlet (111), mix after by the air inlet (112) of described compressor (110), enter in described compressor (110), described auxiliary pumping equipment comprises injector (161), the nozzle (161a) of described injector (161) connects the gas outlet (111) of described compressor (110), the diffuser (161b) of described injector (161) connects the air inlet (112) of described compressor (110), the suction chamber (161c) of described injector (161) connects the liquid outlet (123) of described gas-liquid separator (120), between the gas outlet (111) of described compressor (110) and the nozzle (161a) of described injector (161), be provided with valve (162), between the diffuser (161b) of described injector (161) and the air inlet (112) of described compressor (110), be provided with check valve (163), so that the diffuser (161b) of described injector (161) to the air inlet (112) of described compressor (110) is one-way conduction state, between the suction chamber (161c) of described injector (161) and the liquid outlet (123) of described gas-liquid separator (120), be provided with check valve (164), so that the liquid outlet (123) of described gas-liquid separator (120) is extremely one-way conduction state between the suction chamber (161c) of described injector (161).
2. heat pump type air conditioning system as claimed in claim 1, is characterized in that, described valve (162) is magnetic valve or motor-driven valve.
3. heat pump type air conditioning system as claimed in claim 1, is characterized in that, between the diffuser (161b) of described injector (161) and the air inlet (112) of compressor (110), capillary (165) is set.
4. the method for the liquid accumulating in the utilization heat pump type air conditioning system drainage gas-liquid separator as described in any one in claim 1～3, it is characterized in that comprising: the degree of superheat that detects the suction temperature of described compressor (110), if the degree of superheat of described suction temperature is greater than or equal to five degree, start described auxiliary pumping equipment (160), make described auxiliary pumping equipment (160) extract the liquid in described gas-liquid separator (120), and described liquid is entered in described heat pump type air conditioning system, if when the degree of superheat of described suction temperature is less than five degree or the shutdown of described heat pump type air conditioning system, close described auxiliary pumping equipment (160).
5. method as claimed in claim 4, is characterized in that, described startup or close auxiliary pumping equipment (160) by opening or valve-off is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110091481.8A CN102734989B (en) | 2011-04-08 | 2011-04-08 | Heat pump air conditioning system and method for quickly discharging liquid stored in gas-liquid separator |
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| CN201110091481.8A CN102734989B (en) | 2011-04-08 | 2011-04-08 | Heat pump air conditioning system and method for quickly discharging liquid stored in gas-liquid separator |
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| CN102734989A CN102734989A (en) | 2012-10-17 |
| CN102734989B true CN102734989B (en) | 2014-05-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6011507B2 (en) | 2013-10-08 | 2016-10-19 | 株式会社デンソー | Refrigeration cycle equipment |
| CN105444450A (en) * | 2014-07-04 | 2016-03-30 | 约克广州空调冷冻设备有限公司 | Refrigeration device |
| CN110906580A (en) * | 2019-11-27 | 2020-03-24 | 青岛海尔空调电子有限公司 | Control method of air conditioning system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868001A (en) * | 1997-12-05 | 1999-02-09 | Carrier Corporation | Suction accumulator with oil reservoir |
| JP2003202135A (en) * | 2002-01-10 | 2003-07-18 | Sanyo Electric Co Ltd | Regenerative air-conditioning device |
| CN1692259A (en) * | 2002-11-22 | 2005-11-02 | 大金工业株式会社 | Air conditioner |
| CN201652663U (en) * | 2010-04-29 | 2010-11-24 | 四川长虹空调有限公司 | Heat recovery heat pump air conditioning system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030037905A1 (en) * | 2001-08-22 | 2003-02-27 | Kuo-Liang Weng | Air conditioning system performing composite heat transfer through change of water two phases (liquid vapor) |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868001A (en) * | 1997-12-05 | 1999-02-09 | Carrier Corporation | Suction accumulator with oil reservoir |
| JP2003202135A (en) * | 2002-01-10 | 2003-07-18 | Sanyo Electric Co Ltd | Regenerative air-conditioning device |
| CN1692259A (en) * | 2002-11-22 | 2005-11-02 | 大金工业株式会社 | Air conditioner |
| CN201652663U (en) * | 2010-04-29 | 2010-11-24 | 四川长虹空调有限公司 | Heat recovery heat pump air conditioning system |
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Address after: Tokyo, Japan Patentee after: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, Inc. Address before: Tokyo, Japan Patentee before: Hitachi Johnson Automatic Air Conditioning Co.,Ltd. |
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Effective date of registration: 20181212 Address after: Tokyo, Japan Patentee after: Hitachi Johnson Automatic Air Conditioning Co.,Ltd. Address before: 511685 Xuetian Management Zone, Longshan Town, Fogang County, Qingyuan City, Guangdong Province Patentee before: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Effective date of registration: 20181212 Address after: Longtian Town, Fogang County, Qingyuan, Guangdong Patentee after: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Address before: 511685 Xuetian Management Zone, Longshan Town, Fogang County, Qingyuan City, Guangdong Province Co-patentee before: JOHNSON CONTROLS TECHNOLOGY Co. Patentee before: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. |