CN102997523B - Gas-liquid separator adopted by carbon dioxide heat pump system - Google Patents
Gas-liquid separator adopted by carbon dioxide heat pump system Download PDFInfo
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- CN102997523B CN102997523B CN201210540979.2A CN201210540979A CN102997523B CN 102997523 B CN102997523 B CN 102997523B CN 201210540979 A CN201210540979 A CN 201210540979A CN 102997523 B CN102997523 B CN 102997523B
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Abstract
The invention relates to a gas-liquid separator adopted by a carbon dioxide heat pump system. The gas-liquid separator comprises a sealing tank body, wherein a porous clapboard is arranged in the sealing tank body; the inner space of the sealing tank body is separated into an upper part and a lower part through the porous clapboard; the upper part has a gas-liquid two-phase inlet and is connected with a gas-liquid two-phase inlet pipe; the top of the lower part has a gas outlet and is connected with a gas outlet pipe; the bottom of the lower part has a liquid outlet and is connected with a liquid outlet pipe; a control valve is arranged on the liquid outlet pipe; the liquid outlet pipe is connected with the gas outlet pipe through the control valve and forms a heat regenerator outlet; the gas outlet and the liquid outlet are provided with filtering nets; and the outer wall of the sealing tank body is provided with a defrosting device. The degree of superheat of the system is regulated through the opening degree of the control valve which is arranged on the liquid outlet pipe, and the performance of the system is improved; due to the defrosting device, the gas-liquid separator is suitable for a low-temperature environment; and meanwhile, the filtering nets are arranged at the gas outlet and the liquid outlet, so that the gas and liquid can be effectively filtered, and reliable operation of the system is guaranteed.
Description
Technical field
The present invention relates to a kind of gas-liquid separator, especially a kind of gas-liquid separator being applicable to carbon dioxide heat pump system.
Background technology
In carbon dioxide heat-pump field, gas-liquid separator can the cold-producing medium of storage system interior section, prevents compressor liquid machine and expanding system capacity, regulating system pressure etc.
The gas-liquid separator of common heat pump comprises tank body, gas feed and outlet, gas-liquid two-phase import, oil return, hole for back flow and forms.The internal system loine pressure of common heat pump is lower, and the loine pressure of carbon dioxide heat pump system inside to be 3 times of common heat pump even more, adequately and reasonably carry out by the parts of carbon dioxide heat pump system the inexorable trend that regulating system pressure is system optimization.
When carbon dioxide heat pump system is applied to cold district, the carbon dioxide coolant of evaporator outlet is gas-liquid two-phase fluid, and the lubricating oil of Partial shrinkage machine also can flow out compressor along with CO 2 fluid simultaneously.Common carbon dioxide gas-liquid separator there is no for returning liquid and oil return the setting automatically controlled, and makes back the change of the process of liquid and oil return and system condition can not real-time matching like this.The gas-liquid separator used in common heat pump is not suitable for low temperature psychro-environment, does not consider the frosting problem of gas-liquid separator itself.Simultaneously, in the process of system cloud gray model, cold-producing medium is usually with impurity, common gas-liquid separator inside does not arrange the device of removing or impurity screening, such impurity that will cause enters compressor, longtime running likely causes damaging, and the shortcoming had to a certain degree considered by common carbon dioxide gas-liquid separator to this respect.
Summary of the invention
The object of this invention is to provide a kind of be applicable to low temperature environment, systematic function preferably carbon dioxide heat pump system use gas-liquid separator.
For achieving the above object, the technical solution used in the present invention is:
The gas-liquid separator that a kind of carbon dioxide heat pump system uses, be applied in carbon dioxide heat pump system, it comprises sealed shell of tank, apertured partition is provided with in described sealed shell of tank, the inner space of described sealed shell of tank is separated into upper and lower by described apertured partition, described top is provided with gas-liquid two-phase import and is connected with gas-liquid two-phase inlet pipe, the top of described bottom is provided with gas vent and is connected with escape pipe, the bottom of described bottom is provided with liquid outlet and is connected with drain pipe, described drain pipe is provided with control valve, described drain pipe forms regenerator import with described escape pipe phase tandem after described control valve, described gas vent and described liquid outlet are provided with filter screen, the tank wall of described sealed shell of tank is provided with defroster.
Preferably, described escape pipe by described bottom through described apertured partition and described top the Base top contact by described sealed shell of tank.
Preferably, described control valve is electric expansion valve.
Preferably, described apertured partition comprises plate body, described plate body offers several manholes.
Preferably, described defroster is electric heated defrosting device, and it is coated on the tank wall of sealed shell of tank corresponding to described bottom.
Preferably, the described sealed shell of tank that described top is corresponding is provided with filled mouth and is connected with charging valve
Preferably, the described sealed shell of tank that described top is corresponding is connected with safety valve.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1, gas-liquid separator of the present invention carrys out the degree of superheat of regulating system by the folding degree being arranged at the control valve on drain pipe, the performance of elevator system;
2, gas-liquid separator of the present invention is provided with defroster, is applicable to low temperature environment;
3, gas-liquid separator of the present invention is provided with filter screen at gas vent and liquid outlet, and can effectively filter pure qi (oxygen) body and liquid, guarantee system works reliably.
Accompanying drawing explanation
Accompanying drawing 1 is the structural scheme of mechanism of the gas-liquid separator that a kind of carbon dioxide heat pump system of the present invention uses.
In above accompanying drawing: 1, gas-liquid two-phase import; 2, gas vent; 3, liquid outlet; 4, regenerator import; 5, electric expansion valve; 6, sealed shell of tank; 7, apertured partition; 8, defroster; 9, safety valve; 10, charging valve.
Detailed description of the invention
Below in conjunction with embodiment shown in the drawings, the invention will be further described.
Embodiment one: shown in accompanying drawing 1.
The gas-liquid separator that carbon dioxide heat pump system uses, is applied in carbon dioxide heat pump system.This gas-liquid separator comprises sealed shell of tank 6, is provided with the apertured partition 7 for pressure in dredging flow, balanced seal tank body 6 in sealed shell of tank 6.Apertured partition 7 comprises plate body, plate body offers several manholes.The inner space of sealed shell of tank 6 is separated into upper and lower by apertured partition 7.Top is provided with gas-liquid two-phase import 1 and is connected with gas-liquid two-phase inlet pipe, and the other end of gas-liquid two-phase inlet pipe is connected with the evaporimeter in carbon dioxide heat pump system.The top of bottom is provided with gas vent 2 and is connected with escape pipe, this escape pipe by bottom through apertured partition 7 and top the Base top contact by sealed shell of tank 6.The bottom of bottom is provided with liquid outlet 3 and is connected with drain pipe, and drain pipe is provided with control valve, and this control valve is electric expansion valve 5.Drain pipe forms regenerator import 4 with the tandem of escape pipe phase and is connected with the regenerator in carbon dioxide heat pump system after control valve.Gas vent 2 and liquid outlet 3 are provided with filter screen, and this screen pack can effectively filter and purification of carbon dioxide (gas, liquid) and lubricating oil.The tank wall of sealed shell of tank 6 is provided with defroster 8.Defroster 8 is electric heated defrosting device, and it is coated on the tank wall of sealed shell of tank corresponding to bottom 6.The sealed shell of tank 6 that the top of sealed shell of tank 6 is corresponding is provided with filled mouth and is connected with charging valve 10, the sealed shell of tank 6 that the top of sealed shell of tank 6 is corresponding is also provided with safety valve 9.
When carbon dioxide heat pump system works, carbon dioxide coolant enters in sealed shell of tank 6 by gas-liquid two-phase import 1, after the shunting and buffering of apertured partition 7, atmospheric carbon dioxide enters regenerator import 4 through the gas vent 2 being provided with filter screen and enters in regenerator; The liquid CO 2 settled down and lubricating oil are deposited on the bottom of sealed shell of tank 6, are discharged by the liquid outlet 3 being provided with filter screen.Drain pipe is provided with electric expansion valve 5, the aperture of electric expansion valve 5 is regulated by certain control and feedback signal, and liquid CO 2 and lubricating oil are inputted in regenerator by regenerator import 4, by regulating electric expansion valve 5 can the effective control system degree of superheat, the suction temperature of adjustment compressor.
When this gas-liquid separator runs in low temperature environment, easy frosting on its sealed shell of tank 6.When frost layer acquires a certain degree, also have more liquid carbon dioxide deposition in gas-liquid separator, the gaseous carbon dioxide that now compressor sucks reduces, and heating capacity reduces, and COP declines.Now start defroster 8, effectively can prevent the surperficial frosting of sealed shell of tank 6, improve the gas concentration lwevel of sealed shell of tank 6 inside simultaneously, give when compressor air suction end carbon dioxide is not enough and supplement, namely the gas concentration lwevel of compressor air suction mouth is increased, elevator system performance.
Filled mouth on sealed shell of tank 6 is used for filling all carbon dioxide coolants needed for carbon dioxide heat pump system operation, by arranging filled mouth on this gas-liquid separator surface, effectively can avoid arranging the uneven and security of system hidden danger of pressure that filled mouth brings on miscellaneous part or pipeline.
Above-mentioned gas-liquid separator solves the gas of carbon dioxide heat pump system, liquid, the separation of oil and purification filtering problem, the defrost performance of assisted carbon dioxide heat pump system, and along with system condition the oil return of change real-time control system and return liquid, the control system degree of superheat, improve the systematic function of carbon dioxide heat-pump, improve the heating efficiency of carbon dioxide heat-pump at low temperature extremely frigid zones.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. the gas-liquid separator of a carbon dioxide heat pump system use, be applied in carbon dioxide heat pump system, it is characterized in that: it comprises sealed shell of tank (6), apertured partition (7) is provided with in described sealed shell of tank (6), the inner space of described sealed shell of tank (6) is separated into upper and lower by described apertured partition (7), described top is provided with gas-liquid two-phase import (1) and is connected with gas-liquid two-phase inlet pipe, the top of described bottom is provided with gas vent (2) and is connected with escape pipe, the bottom of described bottom is provided with liquid outlet (3) and is connected with drain pipe, described drain pipe is provided with control valve, described drain pipe forms regenerator import (4) with described escape pipe phase tandem after described control valve, described gas vent (2) and described liquid outlet (3) are provided with filter screen, the tank wall of described sealed shell of tank (6) is provided with defroster (8).
2. the gas-liquid separator that uses of a kind of carbon dioxide heat pump system according to claim 1, is characterized in that: described escape pipe by described bottom through described apertured partition (7) and described top the Base top contact by described sealed shell of tank (6).
3. the gas-liquid separator of a kind of carbon dioxide heat pump system use according to claim 1, is characterized in that: described control valve is electric expansion valve (5).
4. the gas-liquid separator of a kind of carbon dioxide heat pump system use according to claim 1, is characterized in that: described apertured partition (7) comprises plate body, described plate body offers several manholes.
5. the gas-liquid separator of a kind of carbon dioxide heat pump system use according to claim 1, it is characterized in that: described defroster (8) is electric heated defrosting device (8), and it is coated on the tank wall of sealed shell of tank corresponding to described bottom (6).
6. the gas-liquid separator of a kind of carbon dioxide heat pump system use according to claim 1, is characterized in that: the described sealed shell of tank (6) that described top is corresponding is provided with filled mouth and is connected with charging valve (10).
7. the gas-liquid separator of a kind of carbon dioxide heat pump system use according to claim 1, is characterized in that: the described sealed shell of tank (6) that described top is corresponding is connected with safety valve (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210540979.2A CN102997523B (en) | 2012-12-14 | 2012-12-14 | Gas-liquid separator adopted by carbon dioxide heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210540979.2A CN102997523B (en) | 2012-12-14 | 2012-12-14 | Gas-liquid separator adopted by carbon dioxide heat pump system |
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| CN102997523A CN102997523A (en) | 2013-03-27 |
| CN102997523B true CN102997523B (en) | 2015-03-25 |
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| CN201210540979.2A Active CN102997523B (en) | 2012-12-14 | 2012-12-14 | Gas-liquid separator adopted by carbon dioxide heat pump system |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307821B (en) * | 2013-05-21 | 2015-09-16 | 浙江盾安冷链系统有限公司 | A kind of gas-liquid separator |
| CN103673391B (en) * | 2013-12-09 | 2016-05-11 | 江苏苏净集团有限公司 | Carbon dioxide heat pump system and control method thereof |
| CN106403381A (en) * | 2016-10-18 | 2017-02-15 | 珠海格力电器股份有限公司 | Oil return pipe and gas-liquid separator |
| CN107314488A (en) * | 2017-07-11 | 2017-11-03 | 广东美的暖通设备有限公司 | The heat-exchanging loop system and its control method of air-conditioning |
| CN107676846A (en) * | 2017-10-26 | 2018-02-09 | 何铭 | A kind of CO2Air source heat pump synergy heating installation |
| CN107990607B (en) * | 2017-11-29 | 2023-12-29 | 珠海格力电器股份有限公司 | Refrigerant heating device and air conditioner |
| CN112050506A (en) * | 2020-09-23 | 2020-12-08 | 浙江国祥股份有限公司 | Gas-liquid separator with horizontal partition plate |
| CN114183951B (en) * | 2021-12-16 | 2022-12-09 | 珠海格力电器股份有限公司 | Refrigerant purification recovery device and refrigerant purification system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3833209C1 (en) * | 1988-09-30 | 1990-03-29 | Danfoss A/S, Nordborg, Dk | |
| JP4356214B2 (en) * | 2000-08-21 | 2009-11-04 | 三菱電機株式会社 | Oil separator and outdoor unit |
| AU2003283222A1 (en) * | 2002-12-05 | 2004-06-23 | York Refrigeration Aps | Air/water purger for refrigeration plant |
| CN100562697C (en) * | 2005-06-27 | 2009-11-25 | 海尔集团公司 | Low-temperature heat pump air conditioner and automatic defrosting method thereof |
| CN101201208A (en) * | 2006-12-13 | 2008-06-18 | 刘东波 | Common part afflux assembly of refrigerating device |
| JP2010096483A (en) * | 2008-10-17 | 2010-04-30 | Nichirei Kogyo Kk | Gas-liquid separating device and refrigerating device including the same |
| CN101566409A (en) * | 2009-05-20 | 2009-10-28 | 泉州闽隆实业有限公司 | Multifunctional gas-liquid separator used for heat pump system |
| CN202993706U (en) * | 2012-12-14 | 2013-06-12 | 江苏苏净集团有限公司 | Gas-liquid separator used for carbon dioxide heat pump system |
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