CN112361678A - Oil-gas separation device and centrifugal compressor - Google Patents
Oil-gas separation device and centrifugal compressor Download PDFInfo
- Publication number
- CN112361678A CN112361678A CN202011434132.7A CN202011434132A CN112361678A CN 112361678 A CN112361678 A CN 112361678A CN 202011434132 A CN202011434132 A CN 202011434132A CN 112361678 A CN112361678 A CN 112361678A
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- 238000000926 separation method Methods 0.000 title claims abstract description 94
- 239000007788 liquid Substances 0.000 claims abstract description 88
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 8
- 239000011358 absorbing material Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 53
- 239000010687 lubricating oil Substances 0.000 abstract description 14
- 239000003507 refrigerant Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/23—Separators
Abstract
The invention provides an oil-gas separation device and a centrifugal compressor, wherein the oil-gas separation device comprises a flange cover, a cylindrical gas-liquid filtering device and a sleeve, wherein the sleeve is arranged at the bottom of the periphery of the cylindrical gas-liquid filtering device and is provided with an oil return port; a gas-liquid separation flow passage is formed between the inlet and the outlet of the flange cover. Compared with a conventional two-stage oil-gas separator, the oil-gas separation device and the centrifugal compressor provided by the invention have the advantages that the four-stage separation is adopted, lubricating oil is effectively separated from refrigerant gas, the separation efficiency is far higher than that of a conventional two-stage oil separator, the technical problems of low separation efficiency, easiness in oil leakage, low air suction liquid carrying effect and low refrigerating effect and the like caused by the fact that the conventional two-stage oil separator is low in working condition of large flow and low flow rate are solved, the requirement of a product on variable working conditions is met, and the service life and the working reliability of a compressor unit are improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an oil-gas separation device and a centrifugal compressor.
Background
When the centrifugal compressor works, the internal gas pressure of the compressor can be continuously improved by mechanical motion (such as oil pump liquid stirring, rotor motion, gear meshing motion and the like) and high-pressure gas of a gas seal, and the inside and the outside of the compressor are communicated through structures such as a connecting pipe and the like so as to balance the internal gas pressure. However, when the refrigerant gas inside the compressor passes through the connecting pipe, the refrigerant gas carries the gaseous lubricating oil, and if the gaseous lubricating oil is not separated, the lubricating oil flows to the outside of the compressor, namely, the phenomenon of oil leakage occurs. On one hand, the phenomenon of oil leakage causes the air suction and liquid carrying of the unit and damages the service life of the impeller; on the other hand, the liquid level of the lubricating oil is reduced, so that parts such as bearings and the like cannot be sufficiently lubricated and wear is aggravated; in conclusion, the oil leakage phenomenon reduces the service life of the compressor, the working reliability of the unit and the refrigeration effect. Therefore, an oil-gas separation component or device is often added before the connecting pipe to isolate the gaseous lubricating oil and prevent the gaseous lubricating oil from flowing to the outside of the compressor.
As shown in fig. 1, a two-stage oil separator, which is commonly used in a conventional centrifugal compressor, includes: the gas-liquid filter comprises a cylinder body, a flange cover with an outlet and used for sealing the top end of the cylinder body, a plurality of baffle plates serving as a primary gas-liquid filtering structure and a gas-liquid filtering net serving as a secondary gas-liquid filtering structure are sequentially arranged in the cylinder body from bottom to top, and an inlet is formed in the bottom of the cylinder body.
When the two-stage oil separator works, mixed gas carrying lubricating oil enters the two-stage oil separator from the inlet, the kinetic energy is reduced after the mixed gas collides with a baffle plate serving as a primary gas-liquid filtering structure, and part of the lubricating oil is blocked, so that the one-stage separation is completed; the mixed gas after the speed reduction enters an upper layer of gas-liquid filter screen serving as a secondary gas-liquid filter structure, oil drops are accumulated and gradually increased in the gas-liquid filter screen, and descend along the gas-liquid filter screen and each baffle plate under the action of gravity, and are directly discharged from an inlet at the bottom of the cylinder; and the gas continuously rises to complete the secondary separation and is finally discharged from the outlet of the flange plate at the top. The double-stage oil separator has simple structure and easy processing, but has low separation efficiency under the working condition of large flow and low flow rate, and is easy to generate oil leakage.
And the other type adopts a cyclone type three-stage oil separation structure, and effectively improves the gas-liquid separation efficiency of the lubricating oil of the centrifugal compressor through three-stage separation. However, the rotating blades are in a space spiral structure, so that the processing is difficult, the cost is high, the assembly difficulty is high, and the popularization is difficult.
Therefore, how to improve the separation efficiency of the bipolar oil-gas separation device of the existing centrifugal compressor under the working conditions of large flow and low flow rate to meet the requirement of the product on variable working conditions is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention provides an oil-gas separation device and a centrifugal compressor, which can still ensure higher separation efficiency under the working conditions of high flow rate and low flow rate, and aims to solve the technical problem that the bipolar oil-gas separation device of the existing centrifugal compressor has low separation efficiency under the working conditions of high flow rate and low flow rate.
In order to solve the problems, the invention adopts the technical scheme that: there is provided an oil-gas separation device comprising: the gas-liquid separation device comprises a flange cover, a cylindrical gas-liquid filtering device and a sleeve, wherein the sleeve is arranged at the bottom of the periphery of the cylindrical gas-liquid filtering device and provided with an oil return port, an inlet is formed in the outer circle of the sleeve close to the flange cover, and a gas-liquid separation assembly is arranged between the cylindrical gas-liquid filtering device and the sleeve in the radial direction;
a gas-liquid separation flow passage is formed between the inlet and the outlet of the flange cover.
Preferably, the inlets are evenly spaced circumferentially around the outer circumference of the sleeve.
Furthermore, the inlet is a slotted hole inlet, and a first-level gas-liquid filter screen is nested in a slotted hole of the inlet.
Further, the gas-liquid separation assembly includes: a plurality of oil absorption pore plates are arranged at intervals from the inlet to the bottom.
Further, the gas-liquid separation assembly further comprises: and the plurality of second-stage gas-liquid filter screens are arranged at intervals in a staggered manner with the plurality of oil absorption pore plates.
Furthermore, a double-layer primary gas-liquid filter screen is nested in the slot hole of the inlet at intervals.
Preferably, an oil absorption material layer is further arranged between the double-layer primary gas-liquid filter screens.
Further, the cylindrical gas-liquid filter device includes: the cylinder body is connected with the flange cover, the two ends of the cylinder body are opened, the bottom end of the cylinder body is separated from the sleeve, and the baffling structure and the three-stage gas-liquid filter net layer are sequentially arranged in the cylinder body from bottom to top.
Further, the baffle structure includes: at least two baffle plates are arranged on the inner wall of the cylinder body at intervals along the height direction, and baffle channels are formed between the adjacent baffle plates in a staggered mode.
Furthermore, an inlet of a baffling channel is formed between the baffle plate at the lowest layer and the cylinder body and the sleeve, and an outlet of the baffling channel is formed between the baffle plate at the uppermost layer and the cylinder body.
Furthermore, the third-level gas-liquid filter screen layer is arranged between the upper partition plate and the lower partition plate which are arranged on the inner wall of the barrel at intervals in the height direction, and the upper partition plate and the lower partition plate are correspondingly provided with a plurality of air inlets and air outlets.
Preferably, the aperture of the primary filtering hole of the primary gas-liquid filtering net is 2 mm.
Preferably, the diameter of the opening of the oil suction hole plate is 3mm, and the sum of the areas of the openings accounts for 1/2-3/4 of the area of the oil suction hole plate.
Preferably, the number of the oil return openings is 6-8, and the diameter of the oil return opening is 3 mm.
The invention also provides a centrifugal compressor, which comprises a connecting pipe and the oil-gas separation device, wherein the connecting pipe is used for correspondingly communicating the inside and the outside of the compressor through the gas inlet and the gas outlet, and the outlet of the oil-gas separation device is connected with the gas inlet of the connecting pipe.
Compared with the prior art, the oil-gas separation device and the centrifugal compressor provided by the invention have the following beneficial effects:
compared with a conventional two-stage oil-gas separator, the oil-gas separation device and the centrifugal compressor provided by the invention have the advantages that the four-stage separation is adopted, lubricating oil is effectively separated from refrigerant gas, the separation efficiency is far higher than that of a conventional two-stage oil separator, the technical problems of low separation efficiency, easiness in oil leakage, low air suction liquid carrying effect and low refrigerating effect and the like caused by the fact that the conventional two-stage oil separator is low in working condition of large flow and low flow rate are solved, the requirement of a product on variable working conditions is met, and the service life and the working reliability of a compressor unit are improved.
Drawings
FIG. 1 is a sectional view of a prior art two-stage oil-gas separator;
FIG. 2 is a partial cross-sectional view of one embodiment of an oil and gas separation device provided by the present invention;
fig. 3 is a working principle diagram of an embodiment of the oil-gas separation device provided by the invention.
Wherein, in the drawings, the reference numerals are mainly as follows:
1-a cylinder body; 2-a flange cover; 21-an outlet; 3-a sleeve; 31-oil return port; 4-an inlet; 41-first-stage gas-liquid filter screen; 411-primary filtration pore; 42-a layer of oil absorbing material; 5-an oil absorption pore plate; 6-second-stage gas-liquid filter screen; 7-baffle plate; 71-a deflection channel; 8-three-stage gas-liquid filter screen layer; 91-an upper baffle plate; 92-a lower baffle; 911-air outlet; 921-inlet hole.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 2-3 and the embodiments.
Referring to fig. 2-3, the present invention provides an oil-gas separation device, which includes: a flange cover 2 with an outlet 21, the outlet 21 being preferably arranged in the center of the flange cover 2; the cylindrical gas-liquid filtering device also comprises a sleeve 3 which is arranged at the bottom of the periphery of the cylindrical gas-liquid filtering device and is provided with an oil return port 31, an inlet 4 is arranged at the outer circle of the sleeve 3 close to the flange cover 2, and a gas-liquid separating component is arranged between the cylindrical gas-liquid filtering device and the sleeve 3 in the radial direction; a gas-liquid separation flow passage is formed between the inlet 4 and the outlet 21 of the flange cover 2.
As a preferred embodiment, a plurality of inlets 4 are uniformly distributed at intervals along the circumferential direction of the outer circle of the sleeve 3; the inlet 4 is a slotted hole inlet 4, and a primary gas-liquid filter screen 41 is nested in a slotted hole of the inlet 4. As a more preferable embodiment, a double-layer primary gas-liquid filter screen 41 is nested in the slotted hole of the inlet 4 at intervals; an oil absorption material layer 42 can be arranged between the double-layer first-stage gas-liquid filter screens 41. The aperture of the primary filtering hole 411 of the primary gas-liquid filtering net 41 is preferably 2 mm. The inlet 4 is equivalent to a first-stage gas-liquid separation structure of the oil-gas separation device provided by the invention.
The gas-liquid separation module includes: a plurality of oil absorption orifice plates 5 that the interval set up down from import 4, oil absorption orifice plate 5 are cyclic annularly, weld between sleeve 3 and barrel 1 along radially, also can pass through bolted connection between sleeve 3 and barrel 1. The gas-liquid separation assembly further includes: and a plurality of secondary gas-liquid filter screens 6 are arranged at intervals in a staggered manner with the plurality of oil absorption pore plates 5. The diameter of the openings of the oil suction orifice plate 5 is preferably 3mm, and the sum of the areas of the openings is preferably 1/2 to 3/4 in the area of the oil suction orifice plate 5. The gas-liquid separation component is used as a second-stage gas-liquid separation structure of the oil-gas separation device provided by the invention.
The cylindrical gas-liquid filter device comprises: the cylinder body 1 is connected with the flange cover 2, the two ends of the cylinder body are opened, the bottom end of the cylinder body is separated from the sleeve 3, and a baffling structure and a three-stage gas-liquid filter screen layer 8 are sequentially arranged in the cylinder body 1 from bottom to top.
The baffling structure includes: at least two baffle plates 7 are arranged on the inner wall of the cylinder body 1 at intervals along the height direction, and baffle channels 71 are formed between the adjacent baffle plates 7 in a staggered mode. An inlet of a baffling channel 71 is formed between the baffle plate 7 at the lowest layer and the cylinder body 1 and the sleeve 3, and an outlet 21 of the baffling channel 71 is formed between the baffle plate 7 at the uppermost layer and the cylinder body 1. In a preferred embodiment, the baffle 7 is at an acute angle to the horizontal. The baffling structure is equivalent to a third-stage gas-liquid separation structure of the oil-gas separation device provided by the invention.
The third-stage gas-liquid filter screen layer 8 is arranged between the upper partition 91 and the lower partition 92 which are arranged on the inner wall of the cylinder 1 at intervals along the height direction, and the upper partition 91 and the lower partition 92 are correspondingly provided with a plurality of air inlet holes 921 and air outlet holes 911. The third-stage gas-liquid filtering net layer 8 is equivalent to a fourth-stage gas-liquid separation structure of the oil-gas separation device provided by the invention.
In a preferred embodiment, the number of the oil return openings 31 at the bottom of the sleeve 3 is 6-8, and the diameter of the oil return opening 31 is 3 mm.
The invention also provides a centrifugal compressor, which comprises a connecting pipe and the oil-gas separation device, wherein the connecting pipe is correspondingly communicated with the position near and outside the lubricating oil mailbox in the compressor through the air inlet and the air outlet, and the outlet 21 is connected with the air inlet of the connecting pipe.
As shown in fig. 3, the working principle of the oil-gas separation device provided by the invention is as follows:
the oil-gas mixture enters from an inlet 4 of the oil-gas separation device (the pressure near the inlet 4 is higher), and in the process of entering the inlet 4, first-stage gas-liquid separation is realized under the action of a first-stage gas-liquid filter screen 41 and an oil absorption material layer 42 at the inlet 4; after entering the inlet 4, the oil-gas mixture moves downwards and collides with the oil absorption pore plate 5 layer by layer to cause the speed of the oil-gas mixture to be reduced, oil drops gradually increase under the staggered filtering action of the secondary gas-liquid filter screen 6, and finally the oil drops downwards under the action of gravity to realize secondary gas-liquid separation; then after the oil-gas mixture passes through a flow channel between the sleeve 3 and the cylinder 1 at the bottom of the oil-gas separation device and a flow channel between the lowest layer of baffle plates 7, the oil-gas mixture enters the baffle channels 71 formed by staggering all the layers of baffle plates 7 from the inlets of the baffle channels 71 between the lowest layer of baffle plates 7 and the cylinder 1, and third-stage gas-liquid separation is realized in the baffle channels 71; the oil-gas mixture enters the third-stage gas-liquid filter screen layer 8 through the air inlet holes 921 of the lower partition plate 92 after passing through the outlet 21 of the baffling channel 71 formed between the baffle plate 7 at the uppermost layer and the cylinder 1, and fourth-stage gas-liquid separation is realized in the third-stage gas-liquid filter screen layer 8; finally, the refrigerant gas after the four-stage gas-liquid separation passes through the gas outlet 911 of the upper partition plate 91 and flows out of the oil-gas separation device from the outlet 21 of the flange cover 2 (the pressure at the outlet 21 is lower), and after flowing out of the oil-gas separation device, the refrigerant gas enters the gas inlet of the connecting pipe and is discharged into an external refrigerant circulation pipeline of the compressor through the gas outlet of the connecting pipe, so that the refrigerant circulation is realized. Oil drops separated in the whole four-stage gas-liquid separation process are gathered to the bottom of the sleeve 3 from top to bottom through the action of gravity in the oil-gas separation device and are recovered through an oil return opening 31 in the bottom of the sleeve 3, so that the lubricating oil of the compressor can be recycled.
In summary, after an oil-gas mixture near a lubricating oil tank of the compressor enters an inlet 4 of an oil-gas separation device from a high-pressure area, the oil-gas mixture sequentially passes through a four-stage gas-liquid separation structure comprising the inlet 4, a gas-liquid separation component, a flow deflection structure and a three-stage gas-liquid filter screen layer 8, four-stage gas-liquid separation is sequentially realized, the remaining refrigerant gas flows out from an outlet 21 of a flange cover 2 at the top of the oil-gas separation device, and is finally discharged out of the compressor through a connecting pipe to enter external refrigerant circulation, namely, a closed flow passage for gas-liquid separation is formed between the inlet 4 and the outlet 21 of the; meanwhile, oil drops are recovered from an oil return port 31 at the bottom of the oil-gas separation device.
The oil-gas separation device provided by the invention has the advantages of simple structure, easiness in assembly and high separation efficiency. The device is suitable for fixed frequency and variable frequency, and is particularly suitable for large-flow and low-speed working conditions. The oil-gas separation device provided by the invention has an obviously better effect than a conventional two-stage oil separator through experimental tests, and oil leakage under the working conditions of high flow and low speed is solved. The oil circulation rate of the conventional two-stage oil-gas separator is 2%, and the oil circulation rate under the working conditions of high flow and low speed is 3%; the oil circulation rate of the oil-gas separation device provided by the invention is 1%, and the oil circulation rate under the working conditions of high flow and low speed is 1.2%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (15)
1. An oil-gas separation device comprises a flange cover and a cylindrical gas-liquid filtering device, and is characterized by further comprising a sleeve which is arranged at the bottom of the periphery of the cylindrical gas-liquid filtering device and provided with an oil return port, an inlet is arranged on the outer circle of the sleeve close to the flange cover, and a gas-liquid separation assembly is arranged between the cylindrical gas-liquid filtering device and the sleeve in the radial direction;
and a gas-liquid separation flow channel is formed between the inlet and the outlet of the flange cover.
2. The oil and gas separation device of claim 1, wherein the inlet ports are evenly spaced circumferentially around the outer circumference of the sleeve.
3. The oil-gas separation device according to claim 2, wherein the inlet is a slotted inlet, and a primary gas-liquid filter screen is nested in a slotted hole of the inlet.
4. The oil and gas separation device of claim 3, wherein the gas-liquid separation assembly comprises: a plurality of oil absorbing pore plates are arranged at intervals from the inlet.
5. The oil and gas separation device of claim 4, wherein the gas-liquid separation assembly further comprises: and the plurality of secondary gas-liquid filter screens are arranged at intervals in a staggered manner with the plurality of oil absorption pore plates.
6. The oil-gas separation device according to claim 3, wherein the slotted hole of the inlet is nested with the double-layer primary gas-liquid filter screen at intervals.
7. The oil-gas separation device as claimed in claim 6, wherein an oil-absorbing material layer is further arranged between the double-layer primary gas-liquid filter screens.
8. The oil-gas separation device according to claim 5, wherein the cylindrical gas-liquid filter device comprises: the cylinder body is connected with the flange cover, the two ends of the cylinder body are opened, the bottom end of the cylinder body is separated from the sleeve, and a baffling structure and a three-stage gas-liquid filter screen layer are sequentially arranged in the cylinder body from bottom to top.
9. The oil and gas separation device of claim 8, wherein the baffle structure comprises: at least two baffle plates are arranged on the inner wall of the cylinder body at intervals along the height direction, and baffle channels are formed between the adjacent baffle plates in a staggered mode.
10. The oil-gas separation device according to claim 9, wherein an inlet of the deflection passage is formed between the lowermost deflection plate and the cylinder and the sleeve, and an outlet of the deflection passage is formed between the uppermost deflection plate and the cylinder.
11. The oil-gas separation device according to claim 9, wherein the three-stage gas-liquid filter screen layer is arranged between an upper partition plate and a lower partition plate which are arranged on the inner wall of the cylinder body at intervals along the height direction, and a plurality of air inlet holes and air outlet holes are correspondingly arranged on the upper partition plate and the lower partition plate.
12. The oil-gas separation device as claimed in claim 3, wherein the aperture of the primary filtering hole of the primary gas-liquid filtering net is 2 mm.
13. The oil-gas separation device of claim 4, wherein the diameter of the openings of the oil suction orifice plate is 3mm, and the sum of the areas of the openings is 1/2-3/4 of the area of the oil suction orifice plate.
14. The oil-gas separation device according to any one of claims 1 to 13, wherein there are 6 to 8 oil return ports, and the diameter of the oil return ports is 3 mm.
15. A centrifugal compressor comprising a connecting pipe for communicating an inside and an outside of the compressor with an intake port and an exhaust port, respectively, characterized by further comprising the oil-gas separation device according to any one of claims 1 to 13, wherein the outlet is connected to an intake port of the connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011434132.7A CN112361678A (en) | 2020-12-10 | 2020-12-10 | Oil-gas separation device and centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011434132.7A CN112361678A (en) | 2020-12-10 | 2020-12-10 | Oil-gas separation device and centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112361678A true CN112361678A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011434132.7A Pending CN112361678A (en) | 2020-12-10 | 2020-12-10 | Oil-gas separation device and centrifugal compressor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487203A2 (en) * | 1990-11-20 | 1992-05-27 | Mitsubishi Oil Company, Limited | Oil filter having gas separator |
| EP1106229A1 (en) * | 1999-12-03 | 2001-06-13 | Frigomec S.r.l. | Oil separator |
| KR200380379Y1 (en) * | 2005-01-03 | 2005-03-29 | 백차인 | Filter for vehicle |
| CN200949966Y (en) * | 2006-08-10 | 2007-09-19 | 新昌县方圆制冷配件科技创新服务中心 | Filtering oil separator |
| CN204827601U (en) * | 2015-07-30 | 2015-12-02 | 重庆科克发动机技术有限公司 | Engine crankcase exhaust -gas treatment detection device |
| CN106568246A (en) * | 2016-11-17 | 2017-04-19 | 珠海格力电器股份有限公司 | Oil separator and air conditioning unit |
| CN208968112U (en) * | 2018-10-26 | 2019-06-11 | 乳山市创新新能源科技有限公司 | A kind of vertical oil separator |
| CN213873299U (en) * | 2020-12-10 | 2021-08-03 | 珠海格力电器股份有限公司 | Oil-gas separation device and centrifugal compressor |
-
2020
- 2020-12-10 CN CN202011434132.7A patent/CN112361678A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487203A2 (en) * | 1990-11-20 | 1992-05-27 | Mitsubishi Oil Company, Limited | Oil filter having gas separator |
| EP1106229A1 (en) * | 1999-12-03 | 2001-06-13 | Frigomec S.r.l. | Oil separator |
| KR200380379Y1 (en) * | 2005-01-03 | 2005-03-29 | 백차인 | Filter for vehicle |
| CN200949966Y (en) * | 2006-08-10 | 2007-09-19 | 新昌县方圆制冷配件科技创新服务中心 | Filtering oil separator |
| CN204827601U (en) * | 2015-07-30 | 2015-12-02 | 重庆科克发动机技术有限公司 | Engine crankcase exhaust -gas treatment detection device |
| CN106568246A (en) * | 2016-11-17 | 2017-04-19 | 珠海格力电器股份有限公司 | Oil separator and air conditioning unit |
| CN208968112U (en) * | 2018-10-26 | 2019-06-11 | 乳山市创新新能源科技有限公司 | A kind of vertical oil separator |
| CN213873299U (en) * | 2020-12-10 | 2021-08-03 | 珠海格力电器股份有限公司 | Oil-gas separation device and centrifugal compressor |
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