CN104279804A - Gas and liquid separator, air conditioner and air conditioner liquid return control method - Google Patents
Gas and liquid separator, air conditioner and air conditioner liquid return control method Download PDFInfo
- Publication number
- CN104279804A CN104279804A CN201310282508.0A CN201310282508A CN104279804A CN 104279804 A CN104279804 A CN 104279804A CN 201310282508 A CN201310282508 A CN 201310282508A CN 104279804 A CN104279804 A CN 104279804A
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- China
- Prior art keywords
- oil return
- gas
- liquid separator
- pipe
- liquid
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Abstract
The invention provides a gas and liquid separator. The gas and liquid separator comprises a shell, an air inlet pipe and an air outlet pipe. One end of the air inlet pipe and one end of the air outlet pipe are located inside the shell, and the other end of the air inlet pipe and the other end of the air outlet pipe are located outside the shell and communicated with a pipeline of an air conditioning system. The air outlet pipe is provided with an oil return hole. The gas and liquid separator further comprises a second oil return device. The second oil return device comprises an oil return pipe and an oil return valve. The first end of the oil return pipe is arranged on the air outlet pipe, and the second end of the oil return pipe is communicated with a gas and liquid separator liquid storage part; the oil return valve is arranged on the oil return pipe. Because the second oil return device is arranged, the oil return amount or liquid return amount can be controlled by controlling the opening of the oil return valve on the oil return pipe. The invention further provides an air conditioner and an air conditioner liquid return control method. The oil return amount or liquid return amount of the air conditioning system is controllable, so that smooth operation of the air conditioner is guaranteed, and the reliability of the air conditioner is greatly improved.
Description
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, particularly relate to a kind of gas-liquid separator, air-conditioner and air-conditioner and return liquid control method.
Background technology
In current air-conditioning system, all have employed gas-liquid separator to improve the reliability of system.But existing gas-liquid separator all only has one or more uncontrollable spill port, when running state changes, particularly multiple on-line system, effectively cannot control the oil return of gas-liquid separator or return liquid measure, operational reliability can significantly reduce.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved by this invention is, provides a kind of gas-liquid separator, effectively can control recirculating oil quantity or return liquid measure.Present invention also offers a kind of air-conditioner.Present invention also offers a kind of air-conditioner and return liquid control method.
Gas-liquid separator provided by the invention, comprise housing, air inlet pipe and escape pipe, wherein one end of described air inlet pipe and escape pipe is all positioned at housing, and the other end is all positioned at outside housing, and with the pipeline connection of air-conditioning system, described escape pipe is provided with spill port, also comprise the second oil return apparatus, this second oil return apparatus comprises oil return pipe and oil return valve, and described oil return pipe first end is arranged on escape pipe, second end is communicated with gas-liquid separator liquid storing part, and described oil return valve is arranged on oil return pipe.
Preferably, described oil return pipe is positioned at gas-liquid separator inside.
Preferably, described oil return pipe wears on the housing, and described first end and the second end are positioned at described housing, and intervalve section is positioned at outside described housing, and described oil return valve is arranged on the middle pipeline section outside described housing.
Preferably, described oil return pipe first end is arranged on the escape pipe outside housing, and the second end is communicated with gas-liquid separator liquid storing part through housing, and described oil return valve is arranged on the oil return pipeline section of described hull outside.
Preferably, described escape pipe is U-shaped, and comprise the perpendicular short tube and the perpendicular long tube being connected hull outside that connect housing inner end, described oil return pipe first end is arranged on described perpendicular long tube.
Preferably, described oil return valve is magnetic valve.
Preferably, the caliber of described oil return pipe is 5-12mm.
Preferably, described spill port is multiple.
Preferably, described oil return pipe second end is provided with filter.
The present invention also provides a kind of air-conditioner, has above-mentioned gas-liquid separator.
Gas-liquid separator provided by the invention, by arranging the second oil return apparatus, can be controlled oil return or return liquid measure by the aperture controlling oil return valve on oil return pipe.
The invention provides a kind of air-conditioner, oil return or time liquid measure of system are controlled, ensure the even running of air-conditioner, substantially increase the reliability of air-conditioning.
Present invention also offers a kind of air-conditioner and return liquid control method, described cooler compressor exhaust outlet is provided with exhaust temperature-sensitive bag, and described oil return valve and described exhaust temperature-sensitive bag are electrically connected with controller, and described rate-determining steps comprises:
S1: detect compressor exhaust temperature T;
S2: calculate compressor air-discharging degree of superheat Δ T;
S3: compressor air-discharging degree of superheat Δ T is compared with setting value A;
S4: as Δ T >=A, opens oil return valve; As Δ T < A, close oil return valve.
This control method controls oil return valve in real time according to the change of the compressor air-discharging degree of superheat, thus ensures that system refrigerant circulation and system running state adapt, and improves the reliability of system.
Accompanying drawing explanation
Fig. 1 is the gas-liquid separator schematic diagram in one of them embodiment of the present invention;
Fig. 2 is the gas-liquid separator schematic diagram in another embodiment of the present invention.
Number in the figure: 1 housing; 2 air inlet pipe; 21 air inlet pipe are a pipe end wherein; 3 escape pipes; 31 escape pipes are a pipe end wherein; 4 spill ports; 5 oil return pipes; 51 oil return pipe first ends; 52 oil return pipe second ends; 6 oil return valves.
Detailed description of the invention
And the present invention is described in detail in conjunction with the embodiments below with reference to the accompanying drawings.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
Fig. 1 is the gas-liquid separator schematic diagram in one of them embodiment of the present invention, this gas-liquid separator, comprise housing 1, air inlet pipe 2 and escape pipe 3, described air inlet pipe wherein a pipe end 21 and escape pipe wherein a pipe end 31 be all positioned at housing 1, the other end is all positioned at outside housing 1, and with the pipeline connection of air-conditioning system, wherein said escape pipe 3 is provided with spill port 4.This gas-liquid separator also comprises the second oil return apparatus, and this second oil return apparatus comprises oil return pipe 5 and oil return valve 6, and described oil return pipe 5 first end 51 is arranged on escape pipe, and the second end 52 is communicated with gas-liquid separator liquid storing part, and described oil return valve 6 is arranged on oil return pipe.By arranging the second oil return apparatus, can oil return be controlled by the aperture controlling oil return valve on oil return pipe or return liquid measure, thus adapt to the different running statuses of air-conditioning system.Concrete, when oil return valve is opened, because the second end 52 is arranged in the liquid refrigerants of gas-liquid separator liquid storing part, namely the liquid refrigerants of gas-liquid separator liquid storing part or lubricating oil carry out back liquid or oil return by oil return pipe, when not needing to return liquid or oil return in a large number, turn down or close oil return valve.
In embodiment shown in Fig. 1, oil return pipe 5 two ends are each passed through housing 1, described first end 51 is positioned at housing 1, be welded on escape pipe 3 sidewall and be communicated with escape pipe 3, second end 52 is arranged in the liquid refrigerants of described housing liquid storing part, be communicated with gas-liquid separator liquid storing part, it is outside that intervalve section is positioned at described housing 1, and described oil return valve 6 is arranged on the middle pipeline section outside described housing.Oil return valve 6 is arranged on the convenient control of gas-liquid separator hull outside, and oil return valve 6 adopts during magnetic valve and is conveniently electrically connected with controller, the handled easily when oil return valve 6 adopts hand-operated valve.Meanwhile, the maintain and replace of valve is also facilitated.
As another kind of embodiment, oil return pipe 5 is all positioned at gas-liquid separator enclosure interior, and oil return valve 6 is also positioned at enclosure interior, this avoid and bores a hole on housing 1, decrease the hidden danger of leakage, also simpler in structure.
See Fig. 2, as another kind of embodiment, oil return pipe 5 first end 51 is arranged on the escape pipe 3 outside housing 1, and the setting position of this first end according to design needs, the refrigerant pipeline between gas-liquid separator gas outlet and compressor inlet can be selected.Oil return pipe 5 second end 52 is through housing 1, and be arranged in the liquid refrigerants of described housing liquid storing part, be communicated with gas-liquid separator liquid storing part, oil return valve 6 is arranged on the oil return pipeline section of described housing 1 outside.
Different refrigeration systems, design conditions are different, in gas-liquid separator, the height of liquid refrigerants is different, so the height of oil return pipe 5 second end 52 in gas-liquid separator inside can be selected according to the design conditions of refrigeration system, ensures that the second end 52 is in liquid refrigerants all the time.When needing oil return or return liquid, being opened by oil return valve 6, by escape pipe 3 and gas-liquid separator liquid storing part fluid connection, there is flowing negative pressure in oil return pipe 5 because escape pipe is inner, lubricating oil or liquid refrigerants are inhaled into escape pipe 3 by oil return pipe 5, thus realize oil return or return liquid.Unit needs can be met by spill port 4 oil return when unit normally runs, when operational mode or operating condition change, when needing increase recirculating oil quantity or return liquid, carry out auxiliary oil return by oil return pipe 5 or return liquid, thus the even running of the system of guarantee, ensure the reliability of unit.
As depicted in figs. 1 and 2, the escape pipe 3 of gas-liquid separator is U-shaped, comprise connecting and be positioned at the housing escape pipe wherein shorter perpendicular short sections of an end 31 and the longer perpendicular long tube section being connected hull outside and dividing, spill port 4 can be 1, be arranged on the minimum point of this U-shaped pipe, for increasing recirculating oil quantity, the quantity of spill port 4 can be multiple, is separately positioned in perpendicular short sections near U-shaped pipe minimum point and perpendicular long tube section.Described oil return pipe 5 first end 51 is preferably arranged on described perpendicular long tube, arranges like this and avoids oil return or return liquid through U-bend portion, the resistance that minimizing oil return or time liquid are subject to.
As another kind of embodiment, the escape pipe 3 of gas-liquid separator is form U-shaped pipe by many vertical tubes, same, described oil return pipe 5 first end 51 is preferably arranged in the longer perpendicular long tube section that described connection hull outside divides, such setting is avoided oil return or is returned liquid through U-bend portion, the resistance that minimizing oil return or time liquid are subject to.
As a kind of embodiment, the caliber of described oil return pipe 5 is more than or equal to 5mm, and when avoiding caliber too little, oil return or time liquid resistance increase, and is unfavorable for oil return or returns liquid.For convenience of welding processing, the caliber of oil return pipe 5 is also not easily excessive, has good processing effect when caliber is 12mm.Experimentally verify, caliber is preferably 5-12mm, and this size can ensure oil return effect, can reduce again the difficulty of processing of pipeline welding.
As a kind of embodiment; described oil return pipe 5 second end 52 is provided with filter; this filter is filter or screen pack; by arranging this filter; prevent the impurity in refrigerant or lubricating oil from entering compressor; cause the stuck or wearing and tearing of compressor, thus can the operation of available protecting compressor, ensure the reliability of compressor.
The present invention also provides a kind of air-conditioner, this air-conditioner has above-mentioned gas-liquid separator, can control the aperture of oil return valve according to the change of running state, thus the oil return of control system or time liquid measure, ensure the even running of air-conditioner, substantially increase the reliability of air-conditioning.
Present invention also offers a kind of air-conditioner and return liquid control method, described cooler compressor exhaust outlet is provided with exhaust temperature-sensitive bag, and described oil return valve and described exhaust temperature-sensitive bag are electrically connected with controller.Exhaust temperature-sensitive bag detects the delivery temperature T of compressor reality, and sends the delivery temperature T of compressor reality to controller, and T value compares with the compressor exhaust temperature of default by controller, calculates discharge superheat Δ T.Controller controls the opening and closing of oil return valve according to this discharge superheat Δ T.Concrete: discharge superheat Δ T and setting value A compares by controller, as Δ T >=A, opens oil return valve, and what increase compressor returns liquid measure, the refrigerant accumulated is participated in refrigerant circulation, avoid a large amount of refrigerant to be deposited in gas-liquid separator in gas-liquid separator; As Δ T < A, close oil return valve, that reduces compressor returns liquid measure, avoids a large amount of liquid refrigerants to enter compressor and causes liquid hammer.Concrete rate-determining steps is as follows:
S1: detect compressor exhaust temperature T;
S2: calculate compressor air-discharging degree of superheat Δ T;
S3: compressor air-discharging degree of superheat Δ T is compared with setting value A;
S4: as Δ T >=A, opens oil return valve; As Δ T < A, close oil return valve.
This control method controls oil return valve in real time according to the change of the compressor air-discharging degree of superheat, thus ensures that system refrigerant circulation and system running state adapt, and improves reliability and the efficiency of system.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (11)
1. a gas-liquid separator, comprise housing, air inlet pipe and escape pipe, wherein one end of described air inlet pipe and escape pipe is all positioned at housing, and the other end is all positioned at outside housing, and with the pipeline connection of air-conditioning system, described escape pipe is provided with spill port, it is characterized in that, also comprise the second oil return apparatus, this second oil return apparatus comprises oil return pipe and oil return valve, described oil return pipe first end is arranged on escape pipe, and the second end is communicated with gas-liquid separator liquid storing part, and described oil return valve is arranged on oil return pipe.
2. gas-liquid separator according to claim 1, is characterized in that, described oil return pipe is positioned at gas-liquid separator inside.
3. gas-liquid separator according to claim 1, it is characterized in that, described oil return pipe wears on the housing, and described first end and the second end are positioned at described housing, intervalve section is positioned at outside described housing, and described oil return valve is arranged on the middle pipeline section outside described housing.
4. gas-liquid separator according to claim 1, it is characterized in that, described oil return pipe first end is arranged on the escape pipe outside housing, and the second end is communicated with gas-liquid separator liquid storing part through housing, and described oil return valve is arranged on the oil return pipeline section of described hull outside.
5. the gas-liquid separator according to any one of claim 1-4, is characterized in that, described escape pipe is U-shaped, and comprise the perpendicular short tube and the perpendicular long tube being connected hull outside that connect housing inner end, described oil return pipe first end is arranged on described perpendicular long tube.
6. the gas-liquid separator according to any one of claim 1-4, is characterized in that, described oil return valve is magnetic valve.
7. the gas-liquid separator according to any one of claim 1-4, is characterized in that, the caliber of described oil return pipe is 5-12mm.
8. the gas-liquid separator according to any one of claim 1-4, is characterized in that, described spill port is multiple.
9. the gas-liquid separator according to any one of claim 1-4, is characterized in that, described oil return pipe second end is provided with filter.
10. an air-conditioner, is characterized in that, has the gas-liquid separator described in any one of claim 1-9.
11. according to claim 10 air-conditioner return liquid control method, it is characterized in that, described cooler compressor exhaust outlet is provided with exhaust temperature-sensitive bag, and described oil return valve and described exhaust temperature-sensitive bag are electrically connected with controller, and described rate-determining steps comprises:
S1: detect compressor exhaust temperature T;
S2: calculate compressor air-discharging degree of superheat Δ T;
S3: compressor air-discharging degree of superheat Δ T is compared with setting value A;
S4: as Δ T >=A, opens oil return valve; As Δ T < A, close oil return valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282508.0A CN104279804A (en) | 2013-07-05 | 2013-07-05 | Gas and liquid separator, air conditioner and air conditioner liquid return control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282508.0A CN104279804A (en) | 2013-07-05 | 2013-07-05 | Gas and liquid separator, air conditioner and air conditioner liquid return control method |
Publications (1)
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| CN104279804A true CN104279804A (en) | 2015-01-14 |
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| CN201310282508.0A Pending CN104279804A (en) | 2013-07-05 | 2013-07-05 | Gas and liquid separator, air conditioner and air conditioner liquid return control method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299981A (en) * | 2015-12-01 | 2016-02-03 | 昆山方佳机械制造有限公司 | Gas-liquid separating device and refrigeration cycle system using same |
| CN105650762A (en) * | 2016-01-04 | 2016-06-08 | 广东美的暖通设备有限公司 | Air conditioner system, outdoor unit of air conditioner and method for improving volume efficiency of compressor of air conditioner |
| CN106196771A (en) * | 2016-08-29 | 2016-12-07 | 珠海格力电器股份有限公司 | A kind of gas-liquid separator, air conditioning system and control method thereof |
| CN106288555A (en) * | 2015-05-15 | 2017-01-04 | 上海交通大学 | Electrical heating for electric automobile assists gas-liquid separator |
| CN107178943A (en) * | 2017-06-21 | 2017-09-19 | 广东美的暖通设备有限公司 | Air-conditioning system and its method for controlling oil return and device |
| CN107314579A (en) * | 2017-06-23 | 2017-11-03 | 青岛海信日立空调系统有限公司 | The control method of gas-liquid separator, air conditioner and air conditioner |
| CN108317785A (en) * | 2018-05-14 | 2018-07-24 | 珠海格力电器股份有限公司 | Gas-liquid separator and air conditioner |
| CN109028656A (en) * | 2018-07-04 | 2018-12-18 | 青岛海信日立空调系统有限公司 | A kind of control method and device of heat pump |
| CN109114749A (en) * | 2018-07-04 | 2019-01-01 | 青岛海尔空调器有限总公司 | Control method and device for air-conditioning system |
| CN112984880A (en) * | 2021-03-04 | 2021-06-18 | 珠海格力电器股份有限公司 | Method and device for adjusting oil supply amount of compressor, computer equipment and storage medium |
| CN113339963A (en) * | 2021-05-12 | 2021-09-03 | 广东Tcl智能暖通设备有限公司 | Compressor oil return control method and system and air conditioner |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288555A (en) * | 2015-05-15 | 2017-01-04 | 上海交通大学 | Electrical heating for electric automobile assists gas-liquid separator |
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| CN107314579A (en) * | 2017-06-23 | 2017-11-03 | 青岛海信日立空调系统有限公司 | The control method of gas-liquid separator, air conditioner and air conditioner |
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| CN109028656A (en) * | 2018-07-04 | 2018-12-18 | 青岛海信日立空调系统有限公司 | A kind of control method and device of heat pump |
| CN109028656B (en) * | 2018-07-04 | 2020-12-08 | 青岛海信日立空调系统有限公司 | Control method and device for heat pump |
| CN109114749B (en) * | 2018-07-04 | 2021-05-28 | 青岛海尔空调器有限总公司 | Control method and device for air conditioning system |
| CN109114749A (en) * | 2018-07-04 | 2019-01-01 | 青岛海尔空调器有限总公司 | Control method and device for air-conditioning system |
| CN112984880A (en) * | 2021-03-04 | 2021-06-18 | 珠海格力电器股份有限公司 | Method and device for adjusting oil supply amount of compressor, computer equipment and storage medium |
| CN112984880B (en) * | 2021-03-04 | 2022-03-01 | 珠海格力电器股份有限公司 | Method and device for adjusting oil supply amount of compressor, computer equipment and storage medium |
| CN113339963A (en) * | 2021-05-12 | 2021-09-03 | 广东Tcl智能暖通设备有限公司 | Compressor oil return control method and system and air conditioner |
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Application publication date: 20150114 |