Oil separator and air conditioning unit

Abstract

The utility model discloses an oil separator and an air conditioning unit. The oil separator comprises a shell and an oil separation plate group, the upper part in the shell of the oil separator is an oil separation area, the bottom is an oil collection area, and the oil separation plate group with holes is arranged in the oil collection area. Gaseous lubricating oil in the mixed gas entering the oil separation area is separated through the oil separation plate group. Gaseous lubricating oil is converted into liquid lubricating oil through the oil separation plate group and flows into the oil collection area, and the liquid lubricating oil flows into an oil tank of the compressor through an oil return port of the oil collection area, so that the lubricating oil is reused, the performance stability of the unit is ensured, meanwhile, the temperature of mixed gas after heat exchange is reduced, and the refrigeration energy efficiency of the unit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to an oil separator and an air conditioning unit. Background Art

[0002] With the development of modern industry, compressors, as important fluid transportation and gas compression equipment, have been widely used in refrigeration, air conditioning, petrochemical and other fields. During the operation of the compressor, the lubrication and cooling of the bearings are key factors to ensure its efficient and stable operation. However, in centrifugal compressors, due to the particularity of the structural design, it is difficult to achieve completely independent sealing of the bearing impeller cavity and the motor cavity, which brings challenges to the management of lubricating oil.

[0003] The traditional centrifugal compressor bearing lubrication structure usually uses bearings to support the motor shaft and impeller shaft, and comb teeth are set in front and behind the bearings for sealing. However, because the lubricating oil has a certain pressure under the drive of the oil pump, the compressor impeller will form a high-pressure area near the circumferential edge of the impeller during centrifugal motion, and a low-pressure area near the center of the impeller shaft. This pressure difference causes a certain amount of lubricating oil to leak from the bearing comb seal to the low-pressure area in the center of the impeller shaft, which is the so-called "oil leakage" phenomenon. The oil leakage problem will not only lead to a reduction in the lubricating oil inside the compressor, affecting the lubrication and cooling effect of the bearing, but may also pollute the system because the lubricating oil is discharged into the condenser along with the refrigerant gas. As time accumulates, the oil leakage phenomenon will become more and more serious, and may eventually cause the compressor to fail and shut down due to insufficient lubricating oil, or even damage the bearing, causing serious economic losses and safety hazards.

[0004] Therefore, in order to solve the oil leakage problem in centrifugal compressors and ensure the normal operation of the compressor, effective measures must be taken to timely recover the leaked lubricating oil. However, the recovery efficiency of the existing lubricating oil recovery device is low, and it cannot ensure that there is enough lubricating oil inside the compressor to supply bearings for lubrication and cooling. Solving the technical problem of how to improve the recovery efficiency of lubricating oil is of great significance to improving the operating efficiency of the compressor, extending its service life, and ensuring the safe and stable operation of the system. Utility Model Content

[0005] In order to solve the technical problem of low lubricating oil recovery efficiency in the prior art, the utility model provides an oil separator and an air conditioning unit.

[0006] The technical solution adopted by the utility model is:

[0007] The utility model proposes an oil separator, which comprises: an outer shell and an oil separator plate group with holes, wherein the inner part of the outer shell is divided into an oil separation area located at the upper part and an oil collection area located at the bottom, as well as an exhaust inlet and an exhaust outlet arranged corresponding to the oil separation area, and an oil return port arranged corresponding to the oil collection area, wherein the oil separator plate group is arranged in the oil separation area to extend the gas path between the exhaust inlet and the exhaust outlet and separate the lubricating oil in the mixed gas.

[0008] Furthermore, the oil separator plate group comprises:

[0009] An oil separator, wherein a plurality of holes are provided on the oil separator, and a plurality of the oil separators are arranged horizontally and at intervals;

[0010] A partition baffle is vertically arranged in the oil separation area to divide the oil separation area into an oil separation area 1 and an oil separation area 2. After the mixed gas passes through the oil separation area 1, it flows through the oil collection area to the oil separation area 2.

[0011] Furthermore, a liquid injection port and a liquid outlet are respectively provided on both sides of the shell, the shell wall of the shell is provided with a first cavity connected to the liquid injection port and the liquid outlet, the oil separator is provided with a second cavity, and the first cavity and the second cavity are connected for storing or circulating condensate.

[0012] Furthermore, a reversing baffle is provided in the oil collecting area to guide the mixed gas passing through the oil separation area 1 to the oil separation area 2.

[0013] Furthermore, the exhaust inlet is arranged on the upper wall of the outer shell of the oil separation zone 1, and the exhaust outlet is arranged on the upper wall of the outer shell of the oil separation zone 2.

[0014] Furthermore, the reversing baffle is V-shaped or W-shaped.

[0015] Furthermore, the holes between two adjacent oil separation partitions are staggered.

[0016] Furthermore, a solenoid valve is provided at the oil return port.

[0017] The utility model also provides an air conditioning unit, comprising any one of the oil separators.

[0018] Furthermore, the oil separator is arranged between the compressor and the condenser of the air conditioning unit, the exhaust inlet is connected to the air outlet of the compressor, and the exhaust outlet is connected to the air inlet of the condenser.

[0019] Compared with the prior art, the utility model proposes an oil separator, the upper part of the shell of the oil separator is an oil separation area, the bottom is an oil collection area, and an oil separation plate group with holes is provided in the oil collection area. The mixed gas entering the oil separation area is separated from the gaseous lubricating oil in the mixed gas by the oil separation plate group. The gaseous lubricating oil is converted into liquid lubricating oil by the oil separation plate group and flows into the oil collection area. The liquid lubricating oil flows out to the oil tank of the compressor through the oil return port of the oil collection area, so that the lubricating oil is reused, ensuring the performance stability of the unit. At the same time, the temperature of the mixed gas after heat exchange is reduced, which can improve the refrigeration energy efficiency of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the prior art structure of the utility model;

[0022] Figure 2 It is a schematic diagram of a compressor of the prior art of the utility model;

[0023] Figure 3 This is a schematic diagram of the oil separator connection structure of the utility model embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of the oil separator of the utility model embodiment;

[0025] 1. Shell; 11. Surface shell; 12. Bottom shell;

[0026] 21. Circuit board; 22. Wireless charging coil; 211. Electroplating parts;

[0027] 31. Refrigeration sheet; heat dissipation assembly: 32. heat sink; 33. fan; 34. heat conducting sheet;

[0028] Electric clamping arm mechanism: 41, left clamping arm; 42, right clamping arm; 43, gear; 44, horizontal bar; 45, pressure cover; 46, motor;

[0029] 5. Bottom support. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-2 As shown, the air conditioning unit includes a compressor 09, an evaporator 07, a condenser 08 and a throttle valve. The compressor 09 starts working and sucks in the low-temperature and low-pressure refrigerant gas at the outlet of the evaporator 07. The compressor 09 compresses these gases into high-temperature and high-pressure gases. The high-temperature and high-pressure refrigerant gas enters the condenser 08. Due to the decrease in pressure and temperature, the refrigerant gas condenses into liquid in the condenser 08 and releases a large amount of heat. After the high-temperature and high-pressure refrigerant liquid formed after condensation passes through the expansion device, the volume of the refrigerant liquid increases, and at the same time, its pressure and temperature drop sharply, forming a mist-like refrigerant. The mist-like refrigerant liquid enters the evaporator 07. In the evaporator 07, since the boiling point of the refrigerant at this time is much lower than the temperature in the evaporator 07, the refrigerant liquid quickly evaporates into gas. During the evaporation process, the refrigerant will absorb a large amount of surrounding heat, thereby reducing the air temperature around the evaporator. The low-temperature and low-pressure refrigerant vapor in the evaporator 07 is sucked in by the compressor again, starting a new round of circulation.

[0033] With the development of modern industry, compressors 09, as important fluid transportation and gas compression equipment, have been widely used in refrigeration, air conditioning, petrochemical and other fields. During the operation of the compressor, the lubrication and cooling of the bearings are key factors to ensure its efficient and stable operation. However, in centrifugal compressors, due to the particularity of the structural design, it is difficult to achieve completely independent sealing of the bearing impeller cavity and the motor cavity, which brings challenges to the management of lubricating oil.

[0034] like Figure 2 As shown, the bearing lubrication structure of the conventional centrifugal compressor 09 usually adopts bearings to support the motor shaft and the impeller shaft, and comb teeth are set before and after the bearing 02 for sealing. However, the lubricating oil is installed in the oil tank 01, and the lubricating oil is pumped into the bearing 02 by the oil pump 03. The lubricating oil has a certain pressure under the drive of the oil pump 03, and the compressor impeller 04 will form a high-pressure area near the circumferential edge of the impeller 04 during centrifugal motion, and a low-pressure area is formed near the center of the impeller 04 shaft. This pressure difference causes a certain amount of lubricating oil to leak from the bearing comb seal to the low-pressure area in the center of the impeller shaft, which is the so-called "oil leakage" phenomenon. The oil leakage problem will not only lead to a reduction in the lubricating oil inside the compressor, affecting the lubrication and cooling effect of the bearing, but also may pollute the system because the lubricating oil is discharged into the condenser together with the refrigerant gas. With the accumulation of time, the oil leakage phenomenon will become more and more serious, and may eventually cause the compressor to fail and shut down due to insufficient lubricating oil, or even damage the bearing, causing serious economic losses and safety hazards.

[0035] Therefore, in order to solve the oil leakage problem in centrifugal compressors and ensure the normal operation of the compressor, effective measures must be taken to timely recover the leaked lubricating oil and ensure that there is enough lubricating oil inside the compressor to supply bearings for lubrication and cooling. Solving this technical problem is of great significance to improving the operating efficiency of the compressor, extending its service life, and ensuring the safe and stable operation of the system.

[0036] like Figure 3-4 As shown, the utility model provides an oil separator 1, comprising a housing 11 and an oil separator plate assembly.

[0037] The space inside the housing 11 is divided into an oil separation area located at the upper part and an oil collection area 4 located at the bottom. The oil separation area is provided with an exhaust inlet 10 and an exhaust outlet 12, and an oil return port 6 is provided corresponding to the oil collection area 4. An oil separation plate group is provided in the oil separation area, and the oil separation plate group has a plurality of holes 15 so that the gas can flow through the holes 15. The oil separation plate group extends the gas path between the exhaust inlet 10 and the exhaust outlet 12. The oil separation plate group is used to separate the lubricating oil in the mixed gas and convert the gaseous lubricating oil in the mixed gas into liquid. The liquid lubricating oil falls from the oil separation plate group to the oil collection area 4, and the oil collection area 4 collects the liquid lubricating oil and flows out from the oil return port 6 for reuse.

[0038] The oil separator plate group extends the gas path between the exhaust inlet 10 and the exhaust outlet 12, which means that the mixed gas will pass through a longer path in the oil separation area, thereby increasing the contact time and area between the gas and the oil separator plate group. This allows the gaseous lubricating oil in the mixed gas to have a greater chance of converting from gas to liquid, achieving more efficient separation. The liquid lubricating oil falls from the oil separator plate group to the oil collection area 4, ensuring that the separated lubricating oil can be effectively collected and stored, and flows out through the oil return port 6 to flow back into the oil tank of the compressor, ensuring that the compressor oil tank continues to supply oil to the compressor.

[0039] Preferably, the outer shell 11 of the oil separator 1 is cylindrical and can withstand greater pressure.

[0040] The oil separation plate group includes: a plurality of oil separation partitions 13 and separation baffles 14.

[0041] The oil separation partition 13 is circular, and a plurality of holes 15 are arranged at intervals on the oil separation partition 13. The plurality of oil separation partitions 13 are arranged horizontally in the oil separation area, and the edges of the oil separation partitions 13 are in contact with the inner wall of the shell 11 of the oil separator 1, and the plurality of oil separation partitions 13 are arranged parallel to each other. The partition baffle 14 is arranged vertically in the oil separation area, and the style baffle is perpendicular to the oil separation partition 13. The partition baffle 14 divides the oil separation area into two parts, namely, the first oil separation area 2 and the second oil separation area 3. An exhaust inlet 10 is arranged on the upper wall of the shell 11 of the first oil separation area 2, and an exhaust outlet 12 is arranged on the upper wall of the shell 11 of the second oil separation area 3. After the mixed gas enters the oil separation zone 1 2 from the exhaust inlet 10, it exchanges heat through the oil separation partition 13 of the oil separation zone 2, and part of the gaseous lubricating oil in the mixed gas is converted into liquid lubricating oil. Due to the obstruction of the partition baffle 14, the mixed gas can only flow downward after entering the oil separation zone 1 2, and more and more mixed gas flows. After the mixed gas flows to the oil collecting area 4, it flows from the oil collecting area 4 to the oil separation zone 2 3 for heat exchange again, and the remaining gaseous lubricating oil in the mixed gas is further converted into liquid. The gas after heat exchange again is discharged from the exhaust outlet 12.

[0042] The holes 15 on the oil separator 13 are designed to allow the mixed gas to generate eddies and disturbances when passing through, thereby increasing the contact area and heat exchange efficiency between the gas and the oil separator 13. This helps to more effectively convert the gaseous lubricating oil into liquid and improve the separation efficiency. The partition baffle 14 divides the oil separation area into two parts, left and right, ensuring that the mixed gas can only flow downward in the oil separation area 1 2, and then enter the oil separation area 2 3 after passing through the oil collection area 4, ensuring that the mixed gas is fully in contact with the oil separator 13, improving the separation effect, and can further reduce the residual gaseous lubricating oil content in the mixed gas, and improve the purity of the final exhaust gas.

[0043] A reversing baffle 5 is provided in the oil collecting area 4. The reversing baffle 5 guides the mixed gas after passing through the oil separation area 1 2 to the oil separation area 2 3 for heat exchange again, further reducing the residual gaseous lubricating oil content in the mixed gas and improving the purity of the final exhaust gas. The reversing baffle 5 is arranged at the bottom of the oil collecting area 4 in a V-shape or a W-shape. It can effectively guide the mixed gas from the oil separation area 1 2 to the oil separation area 2 3, ensuring that the mixed gas can fully flow through the oil separation partition 13 in the oil separation area 2 3, further reducing the residual gaseous lubricating oil content therein. The airflow in the oil separation area 1 2 flows from top to bottom, with a relatively fast flow rate, which is the initial oil separation, and the oil separation is not thorough; the airflow in the oil separation area 2 3 flows from bottom to top, with a relatively slow flow rate, and the mixed gas and the oil separation partition 13 can fully exchange heat, further reducing the residual gaseous lubricating oil content therein.

[0044] In a further embodiment, a liquid injection port and a liquid outlet 9 are respectively provided on both sides of the housing 11, and the outer wall of the housing 11 is a double-layer design, forming a first cavity connected with the liquid injection port and the liquid outlet 9. The oil separator 13 is also a double-layer design, forming a second cavity, and the first cavity of the housing 11 and the second cavity of the oil separator 13 are connected for storing or circulating condensate. Condensate is injected into the first cavity and the second cavity through the liquid injection port, so that the temperature of the housing 11 and the oil separator 13 is reduced, and the heat exchange with the mixed gas is better, thereby improving the conversion efficiency of the lubricating oil from gas to liquid. The condensate can flow out from the liquid outlet 9, and after the condensate is cooled, it enters from the liquid inlet 8 for recycling. Preferably, the water inlet and the water outlet are respectively arranged at the upper ends of the opposite sides of the housing 11. The condensate can be better distributed in the first cavity and the second cavity. If the water inlet and the water outlet are arranged at the lower end, there may be a part of the housing 11 and the cavity of the oil separator 13 without condensate. Preferably, the condensate is cooling water.

[0045] The condensate (such as cooling water) injected into the housing 11 and the oil separator 13 can effectively reduce the temperature of the housing 11 and the oil separator 13, thereby better exchanging heat with the mixed gas. This temperature difference promotes the conversion of the lubricating oil from gas to liquid, significantly improving the conversion efficiency. Due to the improvement in heat exchange efficiency, the gaseous lubricating oil in the mixed gas can be converted into liquid more quickly, thereby enhancing the separation effect of the oil separator 1. The lubricating oil content in the final exhaust gas is further reduced, and the purity of the gas is improved.

[0046] In a further embodiment, the oil separator 13 is circular, and a plurality of holes 15 are arranged at intervals on the oil separator 13. The plurality of oil separators 13 are arranged horizontally in the oil separation area, and the edges of the oil separators 13 are in contact with the inner wall of the housing 11 of the oil separator 1. The plurality of oil separators 13 are arranged parallel to each other, and the holes 15 between two adjacent oil separators 13 are arranged in a staggered manner. The shape and angle of the oil separator 13 can be set to be circular or rectangular according to requirements, and can also be arranged in parallel or inclined.

[0047] The staggered arrangement of the holes 15 enables the mixed gas to form a more complex flow path when flowing through multiple oil separators 13. The complex flow path increases the contact area between the gas and the oil separator 13, thereby improving the heat exchange efficiency. By increasing the contact area, the gaseous lubricant can be converted into liquid more quickly, thereby improving the separation effect. The staggered arrangement of the holes 15 can cause the mixed gas to form multiple turns and disturbances in the oil separation area, which helps to fully mix and separate the gaseous lubricant and the gas, and can ensure that the gaseous lubricant is more fully separated, thereby improving the separation effect.

[0048] The holes 15 are staggered, and the flow path of the mixed gas in the oil separation area is extended, so that the gaseous lubricating oil has a longer time and more opportunities to be converted into liquid, which can significantly reduce the residual gaseous lubricating oil content in the final exhaust gas and improve the purity of the exhaust gas.

[0049] In a further embodiment, a solenoid valve 7 is provided at the oil return port 6. When the solenoid valve 7 is closed, the liquid lubricating oil is collected in the oil collection area 4. When the solenoid valve 7 is turned on, the lubricating oil flows out from the oil return port 6 and can be reused. A liquid level sensor can also be provided in the oil collection area 4 to detect the position of the lubricating oil in the oil collection area 4, and the solenoid valve is opened or closed according to the detection signal of the liquid level sensor.

[0050] Automatically opening or closing the solenoid valve through the detection signal of the liquid level sensor can reduce manual operation and reduce maintenance costs. In addition, timely replenishment of lubricating oil can extend the service life of the equipment and further reduce maintenance costs.

[0051] The utility model also provides an air conditioning unit, using the oil separator 1 of the utility model. The oil separator 1 is arranged between the compressor and the condenser of the air conditioning unit, the exhaust inlet 10 is connected to the air outlet of the compressor, the exhaust outlet 12 is connected to the air inlet of the condenser, and the oil return port 6 is connected to the lubricating oil tank of the compressor.

[0052] Preventing lubricating oil from entering the condenser or other system components may cause system performance degradation or even failure. The setting of the oil separator 1 can ensure that the lubricating oil is effectively separated and guided back to the oil tank of the compressor for recycling, thereby maintaining stable operation of the system.

[0053] By setting an oil separator plate group with holes 15 in the oil collecting area 4 of the oil separator 1, the oil separator 13 of the oil separator plate group is hollow inside and can circulate and accommodate cooling water medium. When the exhaust mixed gas mixed with lubricating oil gaseous oil droplets passes through the multiple layers of oil separators 13 with holes 15 staggered from each other, the lubricating oil gaseous oil droplets will exchange heat with the cooling water in the oil separator 13 and condense into liquid lubricating oil, which will be adsorbed on the multiple layers of oil separators 13 with holes 15 staggered from each other, and finally drip along the holes 15 of the oil separator 13 to the bottom of the oil collecting area 4 for convergence, so that the gaseous lubricating oil mixed in the refrigerant can be effectively recovered to the oil tank of the compressor; by timely and effective recovery of the gaseous lubricating oil, it is ensured that the bearings of the compressor have sufficient lubricating oil for lubrication and cooling, and the long-term reliable operation of the compressor is ensured. Avoiding a large amount of lubricating oil flowing into the refrigerant system, affecting heat exchange, and then affecting the performance of the unit, this oil return scheme effectively ensures the stability of the unit performance. At the same time, the temperature of the mixed gas after heat exchange is reduced, which can improve the refrigeration efficiency of the unit.

[0054] Compared with the prior art, the utility model proposes an oil separator 1, wherein the upper part of the housing 11 of the oil separator 1 is an oil separation area, and the bottom is an oil collection area 4, and an oil separation plate group with holes 15 is provided in the oil collection area 4. The mixed gas entering the oil separation area is separated from the gaseous lubricating oil in the mixed gas by the oil separation plate group. The gaseous lubricating oil is converted into liquid lubricating oil by the oil separation plate group and flows into the oil collection area 4, and the liquid lubricating oil flows out to the oil tank of the compressor through the oil return port 6 of the oil collection area 4, so that the lubricating oil is reused, thereby ensuring the performance stability of the unit. At the same time, the temperature of the mixed gas after heat exchange is reduced, which can improve the refrigeration energy efficiency of the unit.

[0055] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0057] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0060] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oil separator, characterized in that: The oil separator comprises: an outer shell and an oil separator plate group with holes. The inner part of the outer shell is divided into an oil separator area located at the upper part and an oil collecting area located at the bottom, as well as an exhaust inlet and an exhaust outlet arranged corresponding to the oil separator area, and an oil return port arranged corresponding to the oil collecting area. The oil separator plate group is arranged in the oil separator area to extend the gas path from the exhaust inlet to the exhaust outlet and separate the lubricating oil in the mixed gas.

2. The oil separator according to claim 1, characterized in that: The oil distribution plate group comprises: An oil separator, wherein a plurality of holes are provided on the oil separator, and a plurality of the oil separators are arranged horizontally and at intervals; A partition baffle is vertically arranged in the oil separation area to divide the oil separation area into an oil separation area 1 and an oil separation area 2. After the mixed gas passes through the oil separation area 1, it flows through the oil collection area to the oil separation area 2.

3. The oil separator according to claim 2, characterized in that: A liquid injection port and a liquid outlet are respectively provided on both sides of the shell, a shell wall of the shell is provided with a first cavity connected to the liquid injection port and the liquid outlet, the oil separation partition is provided with a second cavity, and the first cavity and the second cavity are connected for storing or circulating condensate.

4. The oil separator according to claim 2, characterized in that: A reversing baffle is arranged in the oil collecting area to guide the mixed gas passing through the oil separation area 1 to the oil separation area 2.

5. The oil separator according to claim 2, characterized in that: The exhaust inlet is arranged on the upper wall of the outer shell of the oil separation zone 1, and the exhaust outlet is arranged on the upper wall of the outer shell of the oil separation zone 2.

6. The oil separator according to claim 4, characterized in that: The reversing baffle is V-shaped or W-shaped.

7. The oil separator according to claim 2, characterized in that: The holes between two adjacent oil separation partitions are arranged in a staggered manner.

8. The oil separator according to claim 1, characterized in that: A solenoid valve is provided at the oil return port.

9. An air conditioning unit, characterized in that: Including the oil separator according to any one of claims 1-8.

10. The air conditioning unit according to claim 9, characterized in that: The oil separator is arranged between the compressor and the condenser of the air conditioning unit, the exhaust inlet is connected to the air outlet of the compressor, and the exhaust outlet is connected to the air inlet of the condenser.

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