CN202024537U - Gas separation oil return device for supercritical CO2 refrigeration system - Google Patents
Gas separation oil return device for supercritical CO2 refrigeration system Download PDFInfo
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- CN202024537U CN202024537U CN2011200430482U CN201120043048U CN202024537U CN 202024537 U CN202024537 U CN 202024537U CN 2011200430482 U CN2011200430482 U CN 2011200430482U CN 201120043048 U CN201120043048 U CN 201120043048U CN 202024537 U CN202024537 U CN 202024537U
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Abstract
The utility model discloses a gas separation oil return device for a supercritical CO2 refrigeration system. The oil return device is applied in the supercritical CO2 refrigeration system. The upper part of the liquid storage pot is connected with a gas-liquid separator by a back pressure valve of the liquid storage pot; the pressure in the liquid storage pot is controlled by the back pressure valve of the liquid storage pot; from the bottom of the liquid storage pot, liquid refrigerant in the liquid storage pot goes through a liquid path filter and then enters a liquid supply ball valve; the liquid supply ball valve provides cooling air for external equipment; an oil return device is arranged at the lower part of the gas-liquid separator, the redundant oil can return to a suction pipeline; the oil return device arranged at the lower part of the gas-liquid separator is composed of an electromagnetic valve, a ball valve and a pipeline; and the opening of the electromagnetic valve is controlled by a controller. With the adoption of the oil return device, the service life of a compressor and moving parts of the compressor is ensured, and the operating reliability of the system is guaranteed.
Description
Technical field
The utility model relates to the supercritical CO 2 refrigeration system, and the utility model is that supercritical CO 2 refrigeration system gas divides oil return apparatus.
Background technology
CO2 is natural refrigerant, and it is nontoxic, not flammable, and consuming the ozone latent energy value is zero, and global warming potential is 1.CO2 also has good thermophysical property.As: the volume refrigerating capacity compressor of CO2 is about 8 times of R12, and this can make equipment compacter.The seventies in 20th century, CFC and HCFC are found that to destroy atmospheric ozone layer and greenhouse effects index higher and face comprehensive forbidding.Under this background, the CO2 system that adopts overcritical circulation has obtained favor at refrigerating field again with its good environmental protection characteristic, lower flow resistance and sizable refrigerating effect per unit swept volume.More reliable for the operation of supercritical CO 2 refrigeration system, our novel practical patent supercritical CO 2 refrigeration system gas divides the oil return apparatus design also just to arise at the historic moment.
Summary of the invention
Goal of the invention: be that supercritical CO 2 refrigeration system for the future market provides optimal design, gas divide oil return apparatus gas is divided in unnecessary oil be back in the air intake duct, make system's operation more reliable.
Technical scheme: the utility model supercritical CO 2 refrigeration system gas divides oil return apparatus to be applied in the supercritical CO 2 refrigeration system, and the supercritical CO 2 refrigeration unit comprises CO2 compressor, oil eliminator, gas and oil cooler, cooling fan, gas cooler counterbalance valve, fluid reservoir, liquid pipe filter, feed flow ball valve, air-breathing ball valve, air-breathing filter, gas-liquid separator, the fluid reservoir counterbalance valve, double pipe heat exchanger, oil storage tank, oil circuit filter.
By CO2 compressor the CO2 cold-producing medium is compressed, the gas that is compressed into HTHP enters oil eliminator, in oil eliminator, realize separating of oil and gas, isolated oil passes through oil storage tank, get back in the compressor behind the oil strainer, in compressor, oil is squeezed into gas and oil cooler with oil cooling but by built-in oil pump, isolated high temperature and high pressure gas enters gas and oil cooler, in gas and oil cooler, make the high-temperature gas cooling, cool off back gas once more by double-pipe cooler again and arrive the gas cooler counterbalance valve, by gas cooler counterbalance valve one can control valve before pressure in the gas cooler, two can expand into gas the gas-liquid mixed attitude, the CO2 cold-producing medium of gas-liquid mixed attitude enters fluid reservoir, the first half of fluid reservoir is connected with gas-liquid separator by the fluid reservoir counterbalance valve, pressure in the fluid reservoir is controlled by the fluid reservoir counterbalance valve, liquid refrigerant enters the feed flow ball valve behind the process liquid pipe filter in the fluid reservoir bottom fluid reservoir, provide cold by the feed flow ball valve to external equipment, by external equipment come out for the gas of low-temp low-pressure, low-temp low-pressure gas enters air-breathing ball valve, air-breathing ball valve is opened and is made the gas of low-temp low-pressure enter gas-liquid separator, the oily once device in gas-liquid separator bottom, unnecessary oil can be back in the suction line, oil along with refrigerant gas together by entering CO2 compressor after the double pipe heat exchanger heat exchange, thereby realize whole kind of refrigeration cycle.
During the operation of supercritical CO 2 refrigeration system, the oil of the trace that the CO2 cold-producing medium will inevitably carry, owing to the reduction of flow velocity, oil droplet can deposit the oil that carries, and divides bottom deposit at gas in gas divides.Deposition can cause system's oil starvation for a long time, and the compressor oil starvation will increase its loss, causes reduce its service life, and operational reliability reduces.Gas divides oil return apparatus by magnetic valve, and ball valve and pipeline are formed, and the unlatching of magnetic valve is controlled by controller during actual the use, and the in good time unlatching of controlling magnetic valve by control system guarantees system oil return.
The utility model advantage: supercritical CO 2 gas divides oil return apparatus, makes gas divide the oil of deposition to get back in the air intake duct, thereby has guaranteed the service life of compressor and moving component thereof, has guaranteed reliability of system operation.
Description of drawingsFig. 1---kind of refrigeration cycle schematic diagram of the present utility model
1-CO2 compressor among the figure, 2-oil eliminator, 3-gas and oil cooler, the 4-cooling fan, 5-gas cooler counterbalance valve, 6-fluid reservoir, 7-liquid pipe filter, 8-feed flow ball valve, the air-breathing ball valve of 9-, the air-breathing filter of 10-, the 11-gas-liquid separator, 12-counterbalance valve, 13-double pipe heat exchanger, the 14-oil storage tank, 15-oil circuit filter
The specific embodiment
As shown in the figure, the utility model supercritical CO 2 refrigeration system gas divides oil return apparatus to be applied in the supercritical CO 2 refrigeration system, and the supercritical CO 2 refrigeration system comprises: its chief component has CO2 compressor 1, oil eliminator 2, gas and oil cooler 3, cooling fan 4, gas cooler counterbalance valve 5, fluid reservoir 6, liquid pipe filter 7, feed flow ball valve 8, air-breathing ball valve 9, air-breathing filter 10, gas-liquid separator 11, fluid reservoir counterbalance valve 12, double pipe heat exchanger 13, oil storage tank 14, oil circuit filter 15.During actual the use this unit is installed separately, indoor connection evaporator device (reach in freezer or air-cooler etc.), this unit provides cold to evaporator device, realizes the refrigerating process of article in the evaporator device.
Described gas-liquid separator bottom oil return apparatus, by magnetic valve, ball valve and pipeline are formed, the unlatching of magnetic valve is controlled by controller during actual the use, and controller can be responded to the deposition that gas divides oil, and magnetic valve is opened in good time, thereby play the backflow of system oil, guaranteed system running state.
As shown in Figure 1, during the work of this CO2 compressor group, suck refrigerant gas by air-breathing ball valve and enter gas-liquid separator, refrigerant gas enters CO2 compressor after by the double pipe heat exchanger heat exchange, the gas that CO2 compressor is discharged HTHP enters oil eliminator, oil eliminator separates oil with gas, isolated high temperature and high pressure gas enters gas and oil cooler, gas and oil cooler are lowered the temperature gas, after the cooling through behind the double pipe heat exchanger once more the cooling, cooling is after gas cooler counterbalance valve (refrigerant pressure in the control gas cooler) enters fluid reservoir, the liquid refrigerant of fluid reservoir enters the feed flow ball valve by the fluid reservoir bottom liquid pipe filter of flowing through, feed flow gives external equipment (can be reach in freezer, air-cooler etc.) and cools.
Claims (1)
1. supercritical CO 2 refrigeration system gas divides oil return apparatus, it is characterized by: be applied in the supercritical CO 2 refrigeration system, the chief component of system has CO2 compressor (1), oil eliminator (2), gas and oil cooler (3), cooling fan (4), gas cooler counterbalance valve (5), fluid reservoir (6), liquid pipe filter (7), feed flow ball valve (8), air-breathing ball valve (9), air-breathing filter (10), gas-liquid separator (11), fluid reservoir counterbalance valve (12), double pipe heat exchanger (13), oil storage tank (14), oil circuit filter (15), the first half of fluid reservoir is connected with gas-liquid separator (11) by fluid reservoir counterbalance valve (12), pressure in the fluid reservoir is controlled by fluid reservoir counterbalance valve (12), liquid refrigerant through entering feed flow ball valve (8) behind the liquid pipe filter (7), provides cold by feed flow ball valve (8) to external equipment, the oily once device in gas-liquid separator (11) bottom in the fluid reservoir bottom fluid reservoir, unnecessary oil can be back in the suction line, gas-liquid separator (11) bottom oil return apparatus is by magnetic valve, what ball valve and pipeline constituted, the unlatching of magnetic valve is controlled by controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200430482U CN202024537U (en) | 2011-02-21 | 2011-02-21 | Gas separation oil return device for supercritical CO2 refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200430482U CN202024537U (en) | 2011-02-21 | 2011-02-21 | Gas separation oil return device for supercritical CO2 refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024537U true CN202024537U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200430482U Expired - Lifetime CN202024537U (en) | 2011-02-21 | 2011-02-21 | Gas separation oil return device for supercritical CO2 refrigeration system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175325A (en) * | 2013-03-26 | 2013-06-26 | 东莞市鑫焘机械有限公司 | Hydraulic-filling-type water chilling unit |
| CN105571188A (en) * | 2015-11-18 | 2016-05-11 | 吴家伟 | CO2 cascade refrigeration device with improved oil returning system |
| CN105674626A (en) * | 2016-03-30 | 2016-06-15 | 杭州佳力斯韦姆新能源科技有限公司 | Air source carbon dioxide heat pump system with high-pressure oil |
-
2011
- 2011-02-21 CN CN2011200430482U patent/CN202024537U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175325A (en) * | 2013-03-26 | 2013-06-26 | 东莞市鑫焘机械有限公司 | Hydraulic-filling-type water chilling unit |
| CN105571188A (en) * | 2015-11-18 | 2016-05-11 | 吴家伟 | CO2 cascade refrigeration device with improved oil returning system |
| CN105674626A (en) * | 2016-03-30 | 2016-06-15 | 杭州佳力斯韦姆新能源科技有限公司 | Air source carbon dioxide heat pump system with high-pressure oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC APPLIANCES COLD CHAIN (DALIAN) CO., LTD. Free format text: FORMER NAME: SANYANG LENGLIAN CO., LTD., DALIAN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 116600 Dalian Development Zone, Liaoning, Pine Street, No. 6 Patentee after: Panasonic cold chain (Dalian) Co., Ltd. Address before: 116600 Dalian Development Zone, Liaoning, Pine Street, No. 6 Patentee before: Dalian Sanyo Cold-chain Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |