CN213472703U - Heat exchange oil-gas separation device and refrigerant recovery system - Google Patents
Heat exchange oil-gas separation device and refrigerant recovery system Download PDFInfo
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- CN213472703U CN213472703U CN202021756037.4U CN202021756037U CN213472703U CN 213472703 U CN213472703 U CN 213472703U CN 202021756037 U CN202021756037 U CN 202021756037U CN 213472703 U CN213472703 U CN 213472703U
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Abstract
The utility model provides a heat exchange oil-gas separation device and refrigerant recovery system relates to vehicle air conditioning system technical field to solve the technical problem that the refrigerant recovery efficiency that exists is low among the prior art. The device comprises a primary oil-gas separator, a secondary oil-gas separator and a heat conduction structure, wherein the secondary oil-gas separator is arranged inside the primary oil-gas separator, the primary oil-gas separator is connected with the inlet end of a compressor, the outlet end of the compressor is connected with the secondary oil-gas separator, the heat conduction structure is arranged on the outer side wall of the secondary oil-gas separator, and two ends of the heat conduction structure are respectively connected with the secondary oil-gas separator and a condenser. The utility model is used for accelerate the recovery rate of refrigerant, prolong the life-span of compressor.
Description
Technical Field
The utility model belongs to the technical field of the vehicle air conditioning system technique and specifically relates to a heat exchange oil-gas separation device and refrigerant recovery system are related to.
Background
After the air conditioning system of the automobile is used for a period of time, impurities, water vapor and incompressible gas can be mixed into a refrigerant of the air conditioning system, so that the refrigeration efficiency of the air conditioning system is reduced. The refrigerant recovery and filling device is a device for recovering, purifying, storing and refilling the refrigerant in the air conditioning system, not only saves raw materials of the refrigerant, but also can prevent the refrigerant from being discharged into the atmosphere to pollute the environment.
The refrigerant recovery device in the prior art comprises a first oil-gas separator, a compressor, a second oil-gas separator, a condenser and a refrigerant storage tank which are sequentially connected, wherein the first oil-gas separator and the refrigerant storage tank are connected with an air conditioning system to form a circulation loop. The first oil-gas separator is used for performing oil-gas separation on refrigerant and refrigeration oil recovered from an automobile air conditioning system, and the separated refrigerant is in a low-temperature and low-pressure state; when the compressor works, the compressor oil can be taken away by the refrigerant from the outlet, the second oil-gas separator is used for performing oil-gas separation on the refrigerant output from the compressor and the compressor oil so as to return oil to the compressor, the compressor is prevented from being lack of oil, and the separated refrigerant is in a high-temperature and high-pressure state.
The first oil-gas separator and the second oil-gas separator of the refrigerant recovery device provided by the prior art are two independent devices, and the applicant finds that the prior art at least has the following technical problems:
the following trends occur in the operation of the two oil separators: the first oil-gas separator has the advantages that the temperature can continuously decrease during work due to the evaporation of the refrigerant, and the temperature decrease can cause the evaporation of the refrigerant to slow, so that the recovery speed is influenced; the second oil-gas separator is arranged at the outlet end of the compressor, high temperature and high pressure can be generated in the working process, the load of the compressor is increased, the recovery is slowed, and the service life of the compressor is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat exchange oil-gas separation device and refrigerant recovery system to solve the technical problem that the refrigerant recovery efficiency that exists is low among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a heat exchange oil-gas separation device, including primary oil-gas separator, secondary oil-gas separator and heat conduction structure, wherein, secondary oil-gas separator set up in primary oil-gas separator's inside, primary oil-gas separator is connected with the entrance point of compressor, the exit end of compressor with secondary oil-gas separator is connected, be provided with on secondary oil-gas separator's the lateral wall heat conduction structure, heat conduction structure's both ends respectively with secondary oil-gas separator and condenser are connected.
Preferably, the heat conducting structure is a copper pipe wound on the outer side wall of the secondary oil-gas separator.
Preferably, the copper pipe is spirally arranged along the axial direction of the secondary oil-gas separator.
Preferably, the primary oil-gas separator comprises a shell, a separation cavity is formed in the shell, an oil-gas separation module is arranged in the separation cavity, and the secondary oil-gas separator is fixedly arranged in the separation cavity.
Preferably, the housing comprises an upper end cover, a lower end cover and a side wall, the side wall is fixedly arranged between the upper end cover and the lower end cover, and a space enclosed by the upper end cover, the lower end cover and the side wall is the separation cavity; the secondary oil-gas separator comprises a shell, the shell is positioned in the separation cavity and is of a hollow structure with openings at two ends, and the shell is fixed between the upper end cover and the lower end cover.
Preferably, the separation cavity between the shell and the outer shell and the inside of the outer shell are provided with pressure sensors.
A refrigerant recovery system comprises the heat exchange oil-gas separation device.
Preferably, the refrigerant recovery system further comprises a compressor, a condenser and a refrigerant storage tank, the primary oil-gas separator, the compressor, the secondary oil-gas separator, the condenser and the refrigerant storage tank are sequentially connected, and the primary oil-gas separator and the refrigerant storage tank are connected with an air conditioning system to form a circulation loop.
Preferably, an oil return pipeline is further arranged between the secondary oil-gas separator and the compressor, an electromagnetic valve is arranged on the oil return pipeline, and the secondary oil-gas separator can separate refrigerant and compressor oil output from the compressor and return oil to the compressor through the oil return pipeline.
Preferably, the bottom of the primary oil-gas separator is communicated with an oil discharge bottle through a connecting pipeline, and an electromagnetic valve is arranged on the connecting pipeline.
The utility model provides a heat exchange oil-gas separation device, including the first oil-gas separator, second oil-gas separator and heat conduction structure, wherein, second oil-gas separator sets up in the inside of first oil-gas separator, first oil-gas separator is connected with the entrance point of compressor, the exit end of compressor is connected with second oil-gas separator, be provided with heat conduction structure on second oil-gas separator's the lateral wall, heat conduction structure's both ends are connected with second oil-gas separator and condenser respectively, make full use of the temperature difference between first oil-gas separator and the second oil-gas separator, utilize the high temperature of second oil-gas separator to heat first oil-gas separator on the one hand, especially heat conduction structure's setting, further increased the evaporation rate of the interior refrigerant of first oil-gas separator, thereby accelerate the recovery rate of refrigerant; on the other hand, the low temperature of the primary oil-gas separator is utilized to cool and reduce the pressure of the secondary oil-gas separator, so that the load of the compressor is reduced, and the service life of the compressor is prolonged; in addition, the secondary oil-gas separator is arranged inside the primary oil-gas separator, so that the total volume of the oil-gas separator is reduced, and the manufacturing cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a refrigerant recovery device according to an embodiment of the present invention;
fig. 2 is an internal structure view of a heat exchange oil-gas separation device provided by the embodiment of the present invention.
Reference numerals: 1. a primary oil-gas separator; 110. a separation chamber; 120. an upper end cover; 130. a lower end cover; 140. a side wall; 2. a secondary oil-gas separator; 210. a housing; 3. a heat conducting structure; 4. a compressor; 5. A condenser; 6. a refrigerant storage tank; 7. an oil return line; 8. an electromagnetic valve; 9. connecting a pipeline; 10. an oil draining bottle; 11. a one-way valve; 12. an expansion valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a heat exchange oil-gas separation device, including first oil-gas separator 1, second oil-gas separator 2 and heat conduction structure 3, wherein, second oil-gas separator 2 sets up in first oil-gas separator 1's inside, and first oil-gas separator 1 is connected with compressor 4's entrance point, and compressor 4's exit end is connected with second oil-gas separator 2, is provided with heat conduction structure 3 on second oil-gas separator 2's the lateral wall 140, and heat conduction structure 3's both ends are connected with second oil-gas separator 2 and condenser 5 respectively.
The heat conducting structure 3 in this embodiment is a copper pipe wound on the outer sidewall 140 of the secondary oil-gas separator 2. And the copper pipe is spirally arranged along the axial direction of the secondary oil-gas separator 2.
The primary oil-gas separator 1 comprises a shell, a separation cavity 110 is formed in the shell, an oil-gas separation module is arranged in the separation cavity 110, and the secondary oil-gas separator 2 is fixedly arranged in the separation cavity 110. The shell comprises an upper end cover 120, a lower end cover 130 and a side wall 140, wherein the side wall 140 is fixedly arranged between the upper end cover 120 and the lower end cover 130, and a space enclosed by the upper end cover 120, the lower end cover 130 and the side wall 140 is a separation cavity 110; the secondary oil-gas separator 2 comprises a shell 210, an oil-gas separation module is also arranged in the shell 210, the shell 210 is positioned in the separation cavity 110 and is a hollow structure with two open ends, and the shell 210 is fixed between the upper end cover 120 and the lower end cover 130, that is, the primary oil-gas separator 1 and the secondary oil-gas separator 2 share one upper end cover 120 and one lower end cover 130.
In addition, pressure sensors are arranged in the separation cavity 110 between the shell and the shell 210 and in the shell 210, and the pressure in the primary oil-gas separator 1 and the secondary oil-gas separator 2 is monitored in real time.
Referring to fig. 2, the utility model also provides a refrigerant recovery system, including foretell heat exchange oil-gas separation device.
The refrigerant recovery system further comprises a compressor 4, a condenser 5 and a refrigerant storage tank 6, the primary oil-gas separator 1, the compressor 4, the secondary oil-gas separator 2, the condenser 5 and the refrigerant storage tank 6 are sequentially connected, and the primary oil-gas separator 1 and the refrigerant storage tank 6 are both connected with the air conditioning system to form a circulation loop.
An oil return pipeline 7 is further arranged between the secondary oil-gas separator 2 and the compressor 4, an electromagnetic valve 8 is arranged on the oil return pipeline 7, and the secondary oil-gas separator 2 can separate refrigerant output from the compressor 4 from oil in the compressor 4 and can return oil to the compressor 4 through the oil return pipeline 7.
The bottom of the primary oil-gas separator 1 is communicated with an oil discharge bottle 10 through a connecting pipeline 9, and an electromagnetic valve 8 is arranged on the connecting pipeline 9. A one-way valve 11 is arranged on a pipeline between the copper pipe outlet and the condenser 5, and a one-way valve 11 is also arranged on a pipeline between the condenser 5 and the refrigerant storage tank 6.
In an air conditioning system of an automobile, a refrigerant and a refrigerant oil are circulated together to generate refrigeration. Under the action of the compressor 4, the refrigerant and the refrigeration oil in the air conditioning system are recovered to a refrigerant recovery system, and in the refrigerant recovery system: a mixture of refrigerant and refrigeration oil recovered from an automobile air conditioning system enters a primary oil-gas separator 1 through an expansion valve 12 to start separation, the refrigerant and the refrigeration oil are mutually dissolved in a liquid state, and the refrigeration oil is not evaporated when the refrigerant is evaporated into a gas state, so that the gas refrigerant is separated, and the part of the refrigerant is in a low-temperature and low-pressure state; at this time, the temperature inside the primary oil-gas separator 1 is about 0 to 3 ℃, and the separated gaseous refrigerant (refrigerant) in a low-temperature and low-pressure state enters the compressor 4 through an oil passage at the upper part of the primary oil-gas separator 1. The gaseous refrigerant compressed by the compressor 4 is in a high-temperature and high-pressure state, enters the upper part of the secondary oil-gas separator 2, is separated again, and enters the condenser 5 through the spiral copper pipe on the periphery of the secondary oil-gas separator 2. When the compressor 4 works, part of oil of the compressor 4 can be taken away by a refrigerant from an outlet of the compressor 4, the high-temperature and high-pressure gaseous refrigerant carrying part of oil of the compressor 4 flows into the secondary oil-gas separator 2 from an outlet end of the compressor 4, then the secondary oil-gas separator 2 performs oil-gas separation on the high-temperature and high-pressure gaseous refrigerant and the oil of the compressor 4, the electromagnetic valve 8 at the bottom of the secondary oil-gas separator 2 is opened, the separated oil of the compressor 4 can return to the compressor 4 through the oil return pipeline 7, and the oil shortage of the compressor 4. At this time, the internal temperature of the secondary oil-gas separator 2 is 80 to 90 ℃. Since the secondary oil-gas separator 2 is designed to be inside the primary oil-gas separator 1, the secondary oil-gas separator 2 functions as a heating rod in addition to the secondary separation. The refrigerant in the automobile air conditioner is generally R134A refrigerant, and due to the characteristics of R134A refrigerant, the higher the temperature, the higher the pressure and the faster the volatilization. Therefore, the design can separate the refrigerant and the refrigeration oil entering the primary oil-gas separator 1 to the maximum extent. The separated high-temperature and high-pressure gaseous refrigerant enters a condenser 5 to be condensed into a liquid refrigerant; and finally, the liquid refrigerant flows to a refrigerant storage tank 6 for storage. After the separation work is finished, the electromagnetic valve 8 at the bottom of the primary oil-gas separator 1 is opened, the waste refrigeration oil separated from the primary oil-gas separator 1 is discharged, and the waste oil discharge work is finished.
When the refrigerant needs to be filled into the air conditioning system, the vacuum pump is firstly utilized to vacuumize the air conditioning system, so that pressure difference is generated between the air conditioning system and the refrigerant recovery device, and the refrigerant in the refrigerant storage tank 6 flows into the air conditioning system under the action of the pressure difference.
Because the first-level oil-gas separator 1 and the second-level oil-gas separator 2 are respectively connected with the inlet end and the outlet end of the compressor 4, the temperature difference exists between the refrigerant in the first-level oil-gas separator 1 and the refrigerant in the second-level oil-gas separator 2, and the temperature difference is fully utilized, the utility model provides a refrigerant recovery device, the second-level oil-gas separator 2 is arranged in the first-level oil-gas separator 1, on one hand, the copper pipe is utilized to rapidly conduct the high temperature of the second-level oil-gas separator 2 to the separation cavity 110 in the first-level oil-gas separator 1, the first-level oil-gas separator 1 is heated, the evaporation speed of the refrigerant in the first-level oil-gas separator 1 is; on the other hand, the low temperature of the primary oil-gas separator 1 is used for cooling and depressurizing the secondary oil-gas separator 2, so that the load of the compressor 4 is reduced, and the service life of the compressor 4 is prolonged. In addition, the secondary oil-gas separator 2 is arranged inside the primary oil-gas separator 1, so that the total volume of the oil-gas separator is reduced, and the manufacturing cost is reduced.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heat exchange oil-gas separation device is characterized by comprising a primary oil-gas separator, a secondary oil-gas separator and a heat conduction structure, wherein,
the secondary oil-gas separator is arranged inside the primary oil-gas separator, the primary oil-gas separator is connected with the inlet end of the compressor, the outlet end of the compressor is connected with the secondary oil-gas separator, the heat conduction structure is arranged on the outer side wall of the secondary oil-gas separator, and two ends of the heat conduction structure are respectively connected with the secondary oil-gas separator and the condenser.
2. The heat exchange oil-gas separation device according to claim 1, wherein the heat conducting structure is a copper pipe wound on the outer side wall of the secondary oil-gas separator.
3. The heat exchange oil-gas separation device according to claim 2, wherein the copper pipe is spirally arranged along the axial direction of the secondary oil-gas separator.
4. The heat exchange oil-gas separation device according to claim 1, wherein the primary oil-gas separator comprises a housing, a separation cavity is formed in the housing, an oil-gas separation module is arranged in the separation cavity, and the secondary oil-gas separator is fixedly arranged in the separation cavity.
5. The heat exchange oil-gas separation device according to claim 4, wherein the casing comprises an upper end cover, a lower end cover and a side wall, the side wall is fixedly arranged between the upper end cover and the lower end cover, and a space enclosed among the upper end cover, the lower end cover and the side wall is the separation cavity;
the secondary oil-gas separator comprises a shell, the shell is positioned in the separation cavity and is of a hollow structure with openings at two ends, and the shell is fixed between the upper end cover and the lower end cover.
6. The heat exchange oil-gas separation device according to claim 5, wherein the separation chamber between the housing and the casing and the inside of the casing are provided with pressure sensors.
7. A refrigerant recovery system comprising the heat exchange oil-gas separation device according to any one of claims 1 to 6.
8. The refrigerant recovery system according to claim 7, further comprising a compressor, a condenser and a refrigerant storage tank, wherein the primary oil-gas separator, the compressor, the secondary oil-gas separator, the condenser and the refrigerant storage tank are sequentially connected, and the primary oil-gas separator and the refrigerant storage tank are both connected with an air conditioning system to form a circulation loop.
9. The refrigerant recovery system according to claim 7, wherein an oil return line is further disposed between the secondary oil-gas separator and the compressor, the oil return line is provided with an electromagnetic valve, and the secondary oil-gas separator can separate refrigerant and compressor oil output from the compressor and can return oil to the compressor through the oil return line.
10. The refrigerant recovery system according to claim 7, wherein a bottom of the primary oil-gas separator is connected to the oil discharge bottle through a connecting pipeline, and an electromagnetic valve is disposed on the connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021756037.4U CN213472703U (en) | 2020-08-20 | 2020-08-20 | Heat exchange oil-gas separation device and refrigerant recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021756037.4U CN213472703U (en) | 2020-08-20 | 2020-08-20 | Heat exchange oil-gas separation device and refrigerant recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN213472703U true CN213472703U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021756037.4U Active CN213472703U (en) | 2020-08-20 | 2020-08-20 | Heat exchange oil-gas separation device and refrigerant recovery system |
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| CN (1) | CN213472703U (en) |
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