KR20210000715A - A Cyclone Type a Device for Separating an Oil Component for a Refrigerating Vehicle - Google Patents

Abstract

The present invention relates to an oil separator for a freezing vehicle of a cyclone method. More specifically, the present invention relates to an oil separator for a freezing vehicle of a cyclone method, which is able to recover oil while preventing frozen oil substances from being introduced into an apparatus such as a condenser and an evaporator of a freezer. The oil separator for the freezing vehicle of the cyclone method comprises: a separation housing which includes an induction part (11) which has a cylinder shape overall and a separation induction part (13) having different cross-sectional areas in at least a part in an extension direction by being connected to the induction part (11); an inflow unit (14) which introduces a refrigerant containing oil into the induction part (11); a gas induction unit (16) which makes the refrigerant, from which the oil substances are separated, discharged to the outside of the induction part (11); and an oil discharge unit (17) formed on a lower side of the separation induction part (13). The refrigerant introduced into the inflow unit (14) is induced into the shape of an eddy current or a whirlwind in at least a part of the induction part (11).

Description

A Cyclone Type a Device for Separating an Oil Component for a Refrigerating Vehicle}

The present invention relates to a cyclone-type oil separator for a refrigeration vehicle, and more particularly, to a cyclone-type oil separator for a refrigeration vehicle capable of recovering oil while preventing a refrigerated oil component from flowing into a device such as a condenser or evaporator of a refrigerator.

The cooling or refrigeration apparatus includes a compressor and a condenser for compressing a refrigerant, and refrigeration oil may be used for a lubricating function to operate the compressor. In the process of compressing and discharging the refrigerant, some of the refrigerant oil may be included in the refrigerant, and the oil component contained in the refrigerant lowers the efficiency of the condenser and evaporator, and if the oil is not recovered, the amount of oil becomes insufficient, which may cause malfunction of the compressor. Therefore, it is necessary to separate the oil component from the gaseous refrigerant, and for this purpose, an oil separator may be installed between the compressor and the condenser.

Patent Publication No. 10-2014-0140424 discloses an oil separation device for an air compressor that is provided at the rear end of the compressor of the oil supply type air compressor to separate compressed air mixed with oil into air and oil. In addition, Patent Publication No. 10-2016-0112396 discloses an oil separation device of a compressor capable of improving the efficiency of an evaporator by easily separating oil contained in a refrigerant.

The oil separator disclosed in the prior art or known art has a disadvantage in that it is difficult to substantially apply to a refrigerated vehicle due to an inclined structure generated during a vibration or movement process, or it is difficult to secure operation stability while lowering the separation efficiency of oil.

The present invention has the following object to solve the problems of the prior art.

Prior Art 1: Patent Publication No. 10-2014-0140424 (Korea Seal Pack Co., Ltd., published on December 9, 2014) Oil separation device for air compressor Prior Art 2: Patent Publication No. 10-2016-0112396 (Hanon Systems Co., Ltd., published on September 28, 2016) Oil separation device for compressor

It is an object of the present invention to provide an oil separator for a refrigeration vehicle of a cyclone type that can effectively separate an oil component from a gas due to an affinity for an oil component on an inner surface or a separation induction structure while being entirely made of a cyclone structure.

According to a preferred embodiment of the present invention, a cyclone-type oil separator for a refrigeration vehicle includes: a separation housing consisting of a separation induction portion having different cross-sectional areas at least in part along an extension direction while being connected to an induction portion guiding portion having a cylindrical shape as a whole; An inlet unit for introducing a refrigerant containing oil into the induction portion; A gas induction unit for discharging the refrigerant from which the oil component is separated to the outside of the induction part; And an oil discharge unit formed below the separation induction part, wherein the refrigerant introduced into the inflow unit is guided in a vortex or tornado form in at least a part of the induction part.

According to another suitable embodiment of the present invention, at least a portion of the separating housing is coated with a lipophilic component.

According to another suitable embodiment of the present invention, the inlet unit includes an airflow forming portion extending linearly while flowing into the interior of the induction portion, and the airflow forming portion is arranged to face a direction in contact with the circumference of the induction portion, and the airflow The forming part has an inclination angle of 1 to 10 degrees.

According to another suitable embodiment of the present invention, it further comprises a separating net disposed inside the separating housing.

According to another suitable embodiment of the present invention, a capillary module for discharging the separated oil component is further included.

The oil separator according to the present invention is installed between the compressor and the condenser so that the oil component contained in the gaseous refrigerant can be effectively separated. In particular, it is installed for a refrigeration vehicle to generate vibrations generated during the movement process or in various inclined structures. Operational stability can be ensured. The oil separator according to the present invention prevents the refrigeration oil from flowing into the condenser of the refrigerator, thereby improving the heat exchange efficiency of the refrigerator, and recovering the oil and supplying the oil to the compressor as necessary, thereby enabling stable operation of the compressor. In addition, the oil separator according to the present invention enables efficient separation of gas and oil due to the cyclone structure, and improves separation efficiency due to the adsorption of oil by coating the inner wall of the housing with a lipophilic component. In addition, the oil separator according to the present invention allows the separated oil component to be moved by a capillary phenomenon according to a pressure difference so that the operation in the vibration structure is good.

1 shows an embodiment of a cyclone type oil separator for a refrigeration vehicle according to the present invention.
2 shows another embodiment of the oil separator according to the present invention.
Figure 3 shows an embodiment of the operating structure of the oil separator according to the present invention.
4 shows an embodiment to which the oil separator according to the present invention is applied.

In the following, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so if they are not necessary for the understanding of the invention, they will not be described repeatedly, and well-known components will be briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment of.

1 shows an embodiment of a cyclone type oil separator 10 for a refrigeration vehicle according to the present invention.

Referring to FIG. 1, the oil separator 10 for a refrigeration vehicle is connected to the guiding portion 11 and the guiding portion 11 having a cylindrical shape as a whole, and having a different cross-sectional area at least in part along the extending direction. ) A separation housing made of; An inlet unit 14 for introducing a refrigerant containing oil into the induction part 11; A gas induction unit 16 for discharging the refrigerant from which the oil component is separated to the outside of the induction part 11; And an oil discharge unit 17 formed below the separating induction part 13, wherein the refrigerant introduced into the inflow unit 14 is guided in a vortex or tornado form in at least a part of the induction part 11.

The oil separator 10 may be installed between the compressor and the condenser of the refrigerator, and has a function of separating an oil component flowing into the refrigerant from the refrigerant during compression of the refrigerant. The refrigerant may be in the form of a gas, and the refrigerant from which the oil component is separated may be led to a condenser. In addition, the separated oil component may be introduced into the compressor or discharged to the outside. The oil separator 10 may be applied to a refrigerator of a refrigeration vehicle, but may be applied to various refrigeration or refrigeration devices, and may be applied to various compressors by appropriate structural changes.

The oil separator 10 may have a cylindrical shape as a whole and a lower portion of the oil separator 10 may have a conical shape for discharge, but is not limited thereto. The oil separator 10 may have a structure in which a refrigerant including an oil component flowing into the separation housing is guided in a vortex or vortex, and the cyclone structure in the present specification is a structure capable of inducing such a gas flow. Say.

The separating housing has a function of inducing a gaseous refrigerant flowing into the inside of a cyclone-type stream to separate the oil component from the refrigerant. Specifically, the separating housing is composed of a hollow cylindrical guiding portion 11 in which a cyclone-shaped stream is formed, and a separating guiding portion 13 that is integrally or can be combined with the guiding portion 11 and has a conical shape as a whole. I can. In addition, the loop portion 12 of a horn shape or various shapes may be coupled above the induction portion 11. In addition, the inlet unit 14 is coupled to the induction part 11 so that the oil-containing refrigerant transferred from the compressor may be introduced.

The inlet unit 14 may have a linear tube shape passing through the induction portion 11 from the outside to the inside, and the air flow forming portion 141 located inside the induction portion 11; A connection portion 142 located outside the induction portion 11 while being connected to the airflow forming portion 141; And a coupling portion 143 fixing the inlet unit 14 to the induction portion 11.

The induction part 11 may have a cylindrical shape or a similar shape, and preferably may be made in a structure in which a cyclone-shaped stream is formed. For example, the guide portion 11 may have a structure in which the refrigerant is guided along the circumferential surface while having a shape of a hollow cylinder as a whole. To this end, a cylindrical inner guiding portion may be formed in the central portion of the guiding portion 11 or may be made so that the pressure of the central portion is relatively high compared to the circumferential surface. In addition, the inlet unit 14 may be disposed so that the airflow forming portion 141 faces a direction in contact with the circumference of the induction portion 11 while being coupled to the upper portion of the induction portion 11. The inlet unit 14 may have a shape of a linear tube as a whole, and preferably may have a structure in which the airflow-forming part 141 extends linearly within the induction part 11.

The inlet unit 14 or the airflow forming part 141 may extend in an inclined form inside the induction part 11, for example 1 to 10 degrees downward relative to the plane, preferably 3 to 6 degrees. Degrees, and most preferably 5 degrees. As such, the airflow forming portion 141 is disposed so as to be adjacent to the inner surface so as to be inclined so that a cyclone-shaped airflow is stably formed inside the induction portion 11.

A lipophilic coating layer (PC) may be formed on the inner surface of the induction portion 11 or the separation induction portion 13, and a drum-shaped separation net ( 18) can be deployed. The lipophilic coating layer (PC) may include, for example, a silicone lipophilic compound, and specifically, may include a fluorsilicone compound having a fluoralkyl or fluorpolyether group. Alternatively, the lipophilic coating layer (PC) may include an acrylic compound having an alkyl group or a polycycloalkyl group. Alternatively, the lipophilic coating layer (PC) may comprise a lipophilic olein, isoprophl myristate, cetyl alcohol, citric acid, propylene glycol or propionate compound. The lipophilic coating layer (PC) may be formed by a film or by a coating film, but is not limited thereto. The lipophilic coating layer (PC) may be formed on the inner surface of the separating housing with a thickness of, for example, 10 to 500 μm, and below the lipophilic coating layer (PC) or the inner wall of the separating housing or the lipophilic coating layer ( PC) may be formed with a flow path layer (FP). In addition, a drum-shaped separation net 18 may be disposed in the direction of the center of the induction part 11 on a surface exposed to the top or inward of the lipophilic coating layer PC.

The refrigerant including the oil component guided through the inlet unit 14 is introduced into the induction section 11 to form a vortex, and the stream can be guided in the direction of the separation induction section 13 in a spiral shape. The vortex stream collides with the separating network 18 during the flow process, and the liquid oil component may be separated from the gaseous refrigerant during the collision process. The separating net 18 may have a thickness according to the flow range of the vortex stream in the induction portion 11, for example, 1/10 to 4/5 of the radius of the cylinder-shaped induction portion 11. The branch may have a drum shape having a cylindrical through hole. The separating net 18 may be formed of two cylindrical mesh nets having different radii in which the mesh is formed, or may have a structure in which a mesh is formed in a direction perpendicular to the flow direction of the vortex stream. The size of the mesh can be such that it does not change the flow direction of the vortex stream. The separating network 18 may have a function of separating oil components contained in the refrigerant while inducing the formation of vortex. For separating the oil component, the separating net may be coated with a lipophilic component, for example, a fluorsilicone compound having a fluoralkyl or fluorpolyether group described above; Acrylic compounds having an alkyl group or a polycycloalkyl group; Alternatively, olein, isopropyl myristate, cetyl alcohol, citric acid, propylene glycol or propionate components may be coated with a coating agent containing the same lipophilic compound. The separation net 18 may be coated to a thickness of 1 to 100 μm by, for example, a coating agent containing a lipophilic component, and the mesh may have a circular or polygonal cross section. In addition, the mesh may be made of a linear member similar to a wire, and the separation net 18 may be formed while a mesh is continuously made by a wire in which a plurality of strands are woven together.

The refrigerant introduced into the induction portion 11 may flow inside the induction portion 11 and the induction separation portion 13 while forming a cyclone-type stream. In such a process, the oil component contained in the refrigerant may be separated and flow downward along the inner wall of the separation housing, flow downward along the separation net 18, or fall downward. The lower side of the separation induction part 13 may form an inclined surface, and the oil component may be guided by the inclined surface to be guided to the discharge hole EH. In addition, the gaseous refrigerant from which the oil component has been removed may be guided upward and transferred to the condenser through the gas induction unit 16. Specifically, the refrigerant from which the oil component having a relatively low specific gravity is separated may be moved upward where the loop portion 12 is formed. And it can be discharged to the outside of the separation housing through the gas induction unit 16 coupled to the roof portion 12. The roof portion 12 may have various structures, and the refrigerant from which the oil component has been removed may be discharged to the outside through various discharge paths and guided to the condenser.

According to an embodiment of the present invention, a capillary module 15 for absorbing the separated oil component may be disposed in the separation induction unit 13. Specifically, the oil component may be guided through the capillary module 15 formed by a plurality of capillaries and transferred to the oil discharge unit 17. The oil component guided to the oil discharge unit 17 may be discharged to the outside or may be supplied back to the compressor.

The capillary module 15 may be formed of a plurality of capillaries, and the inlet of each capillary tube may be connected to the inner surface of the separation induction part 13 to allow the transfer of liquid. Specifically, the separation induction part 13 may have a conical shape, and the adjustment part 19 is formed in the form of an extension of the induction part 11 in a downward direction from the interface between the induction part 11 and the separation induction part 13 Can be. Alternatively, the adjusting part 19 may be a closed structure or a structure capable of controlling pressure, and the capillary module 15 may be disposed inside the adjusting part 19. The capillary module 15 may consist of a plurality of capillaries, and the inlet of each capillary is connected to the inner surface of the separation induction part 13 so that the oil component collected in the separation induction part 13 is separated from the separation induction part ( 13) can be leaked to the outside. For example, the other end of each capillary tube may be connected to the inside of the oil draining unit 17 or the regulating part 19. In addition, a capillary tube or a tube having a flow path connected to the capillary tube may be connected to the discharge hole EH. The capillary tube may be a metal capillary tube or a fiber capillary tube, or a material such as fiber or pulp capable of capillary phenomenon. If necessary, the pressure of the adjustment portion 19 can be adjusted, thereby allowing the oil component to easily flow into the capillary module 15.

The capillary module 15 may be made in a form surrounding the outer circumferential surface of the separation induction part 13, but is not limited thereto, and may be made in various forms capable of introducing and flowing oil components. In addition, the inside of the separation housing may be made in various structures to form a cyclone-type flow.

2 shows another embodiment of the oil separator according to the present invention.

2, auxiliary separation portions 131 and 132 may be formed between the separation induction portion 13 and the induction portion 11, and 2 auxiliary separations extending in an inclined shape from the separation induction portion 13 It may consist of a portion 132 and one auxiliary separation portion 131 extending in a cylindrical shape from the second auxiliary separation portion 132. In addition, the separation induction part 13 may be connected below the 1 auxiliary separation part 131. 2 The oil component preferentially separated from the auxiliary separation part 132 is guided downward, and the oil component separated through the 1 auxiliary separation part 131 may be quickly guided to the separation inducing part 13.

A gas guide tube 22 may be formed in the inside of the guide part 11 to extend from the inside of the guide part 11 to the outside. The gas guide tube 22 may have a hollow cylinder shape, and may have a small radius while having the same central axis as the guide part 11, and a cyclone flow is formed along the circumference of the gas guide tube 22. I can. An inflow guide tab 25 may be formed at the lower end of the gas guide tube 22, and the inflow guide tab 25 may have a fallopian tube or similar shape. In addition, a funnel-shaped boundary inflow wing 23 may be formed at the upper portion of the inflow induction tab 25, and an inflow limiting portion 24 inclined along the circumferential surface of the boundary inflow wing 23 is formed. I can. The boundary inlet blade 23 may have a gas flow path connected with the gas guide tube 22, and the cyclonic flow is formed in the guide part 11 by the inflow limiting part 24 and the boundary inlet blade 23. What the refrigerant flows into the separation induction part 13 may be introduced. In addition, the refrigerant from which the oil component has been removed is introduced into the gas guide pipe 22 through the boundary inflow blade 23 or the inflow guide tab 25 by this structure.

A closed loop 12a is formed above the induction part 11, and the gas induction unit 16 may be disposed in a form that passes through the closed loop 12a while being connected to the gas induction tube 22. The discharge pressure control unit 26 may be disposed in the gas induction unit 16, and the amount of refrigerant transferred through the supply conduit T1 connected to the condenser is controlled by the operation of the discharge pressure control unit 26 Can be. The discharge pressure control unit 26 may have a pressure control function and a valve function. In addition, the separating net 18 may be disposed outside the gas guide tube 22, and the pressure of the refrigerant including the oil component flowing into the guide portion 11 is controlled by the inlet pressure control unit 27 Can be. The inlet pressure regulating unit 27 may have a pressure regulating function and a valve function while connecting the inlet unit 14 and the 2 supply conduit T2 connected to the compressor.

A suction pressure adjusting unit 28 may be disposed at the lower end of the separation inducing part 13, and the suction pressure adjusting unit 28 may be connected with a discharge conduit T3 connected to the outside of the separation housing. The suction pressure adjusting unit 28 may have a function of adjusting the pressure of the capillary module, and one end of each capillary tube forming the capillary module may be connected to the suction pressure adjusting unit 28. The suction pressure control unit 28 may have a function of adjusting the pressure of the capillary module according to the internal pressure of the separation housing, and, for example, a function of adjusting the pressure inside each capillary tube to be lower than the internal pressure of the separation housing. Can have

According to one embodiment of the present invention, a vortex forming nozzle NZ may be disposed at an end of the inlet unit 14, and the vortex forming nozzle NZ is an inflow direction of the refrigerant flowing into the induction unit 11 While controlling the refrigerant to form a particulate form. Specifically, the vortex forming nozzle NZ may be combined in a structure capable of adjusting the direction with respect to the inlet unit 14, and for example, the spray direction is set to be inclined at 1 to 10 degrees with respect to the extension direction of the inlet unit 14 Can be. In addition, the vortex forming nozzle NZ may have a structure in which the refrigerant is discharged along the circumferential surface of the nozzle tip while the nozzle tip is formed at the end, and the refrigerant is made in the form of fine particles. As described above, the oil component is made into fine particles by the vortex forming nozzle NZ, so that the oil component is easily separated from the refrigerant by the separating net 18.

The separation housing may have various internal structures to form a cyclone flow, and is not limited to the presented embodiments.

3 shows an embodiment of the operating structure of the oil separator according to the present invention.

Referring to FIG. 3, the operation of the oil separator may be controlled by the control module 31, for example, an inlet unit 321 for adjusting the inlet pressure of the refrigerant by the control module 31; A temperature unit 322 for controlling the internal temperature of the separation housing; And the pressure of the pressure unit 323 for controlling the discharge or absorption pressure of the separated oil component may be adjusted. The internal temperature of the separating housing may be a major factor for separating oil components and forming a vortex, and may be set by the internal pressure of the separating housing. The relationship between the internal pressure, the internal temperature, the oil component suction pressure, the discharge pressure of the refrigerant from which the oil component has been removed, or the flow rate of the airflow can be made as separate data and can be generated by the separation data unit 36. In addition, the inlet pressure, the internal temperature, and the suction pressure may be adjusted based on the separation data. When such a separation factor is adjusted, the inclination angle or the flow rate of the refrigerant flowing into the separation housing by the flow unit 33 can be adjusted, and the suction speed of the separated oil component can be adjusted by the suction unit 34. Can be. For example, the inclination angle into which the refrigerant is introduced may be adjusted in the range of 1 to 10 degrees, and the suction speed may be appropriately adjusted according to the internal pressure of the separation housing. In addition, the amount of the separated oil component may be detected by the detection unit 35 and transmitted to the separated data unit 36. The separation data unit 36 may determine the appropriateness of operation by comparing the amount of separated oil according to the amount of the incoming refrigerant. In addition, the separated data may be modified as necessary, and the modified separated data may be transmitted to the control module 31. Thereafter, the control module 31 may control the operation of the inlet unit 321, the temperature unit 322, and the pressure unit 323.

The oil separator can be operated in various ways and is not limited to the examples presented.

4 shows an embodiment to which the oil separator according to the present invention is applied.

Referring to FIG. 4, the oil separator may be applied to, for example, a refrigerator of a refrigeration vehicle, and the refrigerator includes a condenser 41 that condenses a refrigerant into a liquid form; A filter dryer 42 connected to the condenser 41 to remove moisture contained in the refrigerant; An expansion valve 43 that expands the refrigerant to reduce pressure; An evaporator 44 for cooling the space in a heat exchange manner while evaporating the liquid with reduced pressure; And it may include a compressor 46 for compressing the refrigerant in the gaseous state in the evaporator 44. A sight glass 421 and a liquid separator 45 for checking the state of the refrigerant may be installed.

The oil separator 10 may be installed between the compressor 46 and the condenser 41, and may have a function of removing oil components flowing into the refrigerant during compression of the refrigerant. Specifically, the refrigerant compressed by the compressor 46 may be introduced into the oil separator 10 through the inlet unit 14 to form a cyclone-shaped airflow. In addition, the oil component contained in the refrigerant may be separated by the operation of the oil separator 10. In addition, the separated oil component may be introduced into the compressor 46 through the recovery conduit 47 and used again or may be discharged to the outside. In addition, the refrigerant from which the oil component has been removed may be transferred to the condenser 41. In this way, the oil component is removed from the refrigerant by the oil separator 10, thereby increasing the heat exchange efficiency of the refrigerator and enabling stable operation of the compressor.

The oil separator according to the present invention is installed between the compressor and the condenser so that the oil component contained in the gaseous refrigerant can be effectively separated. In particular, it is installed for a refrigeration vehicle to generate vibrations generated during the movement process or in various inclined structures. Operational stability can be ensured. The oil separator according to the present invention prevents the refrigeration oil from flowing into the condenser of the refrigerator, thereby improving the heat exchange efficiency of the refrigerator, and recovering the oil and supplying the oil to the compressor as necessary, thereby enabling stable operation of the compressor. In addition, the oil separator according to the present invention enables efficient separation of gas and oil due to the cyclone structure, and improves separation efficiency due to the adsorption of oil by coating the inner wall of the housing with a lipophilic component. In addition, the oil separator according to the present invention allows the separated oil component to be moved by a capillary phenomenon according to a pressure difference so that the operation in the vibration structure is good.

The present invention has been described in detail above with reference to the presented embodiments, but those of ordinary skill in this field will be able to make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modifications and variations of the invention, but is limited by the claims appended below.

10: oil separator 11: induction part
12: loop portion 12a: closed loop
13: Separation guide section 14: Inlet unit
15: capillary module 16: gas induction unit
17: oil draining unit 18: separating net
19: adjustment part 22: gas guide tube
23: boundary inflow wing 24: inflow restriction portion
25: inlet induction tap 26: outlet pressure regulating unit
27: inlet pressure control unit 28: suction pressure control unit
31: control module 33: flow unit
34: suction unit 35: detection unit
36: separate data unit 41: condenser
42: filter dryer 43: expansion valve
44: evaporator 45: liquid separator
46: compressor 47: return conduit
131, 132: 1, 2 auxiliary separation part
141: airflow forming portion 142: connecting portion
143: coupling portion 321: inlet unit
322: temperature unit 323: pressure unit
421: sight glass EH: discharge hole
FP: flow path bed NZ: vortex forming nozzle
PC: lipophilic coating layer T1, T2: 1, 2 supply conduit
T3: exhaust conduit

Claims (1)

A separating housing consisting of a guiding portion 11 having a cylindrical shape as a whole and a separating guiding portion 13 connected to the guiding portion 11 and having different cross-sectional areas at least in part along the extending direction;
An inlet unit 14 for forming a vortex while introducing a refrigerant containing oil into the induction portion 11;
An oil discharge unit 17 formed below the separating induction part 13;
A separating network 18 consisting of two cylindrical mesh nets having different radii and separating the oil component from the refrigerant by collision during the formation of the vortex; And
A capillary module 15 in which an inlet is connected to the inner surface of the separation induction part 13 so as to transfer the liquid and the inner surface of the separation induction part 13 to discharge the separated oil component;
A gas guide tube 22 that induces a cyclone flow along the circumference while forming a hollow cylinder shape formed to extend from the inside of the guide portion 11 to the outside;
Gas induction arranged in a form penetrating through the sealing loop 12a formed above the induction part 11 and connected to the gas induction pipe 22 so that the refrigerant from which the oil component is separated is discharged to the outside of the induction part 11 Unit 16; And
A vortex forming nozzle NZ disposed at the end of the inlet unit 14 and having a nozzle tip,
Cyclone type refrigeration vehicle oil, characterized in that a lipophilic coating layer is formed on the inner wall of the induction part 11 or the separation induction part 13 and the separating net 18 is disposed outside the gas induction tube 22 Separator.

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