Oil separator and air conditioner with same

Abstract

The oil separator comprises a tank body and an air inlet pipe, the tank body is provided with an oil outlet and a refrigerant outlet, the tank body is vertically arranged, the refrigerant outlet is higher than the oil outlet, the outlet end of the air inlet pipe is connected with the tank body, and the outlet end of the air inlet pipe is higher than the oil outlet and lower than the refrigerant outlet. And the axial line of the outlet end deviates from the central axis of the tank body. According to the oil separator disclosed by the embodiment of the utility model, the axial line of the outlet end of the air inlet pipe is deviated from the central axis of the tank body, so that the direct collision between a mixture of lubricating oil and a gaseous refrigerant and the tank body is improved, the kinetic energy loss is reduced, and the mixture can do centrifugal motion along the tangential direction of the tank body; the separation speed of lubricating oil and a gaseous refrigerant can be increased, and the separation effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning equipment, and in particular to an oil separator and an air conditioner having the same. Background Art

[0002] In a refrigeration system, a compressor usually requires lubricating oil to operate normally. Lubricating oil is mixed in the exhaust gas of the compressor. Usually, an oil separator needs to be installed between the compressor and the condenser to separate the lubricating oil from the gaseous refrigerant, so that the lubricating oil can return to the compressor to ensure its normal operation, prevent the compressor from lacking oil, and at the same time, avoid excessive oil from entering the condenser and the evaporator, affecting the heat exchange efficiency.

[0003] The separation effect of the oil separator in the related art is not good, and there is room for improvement. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides an oil separator, and the oil separator has a good separation effect on lubricating oil and gaseous refrigerant.

[0005] The utility model also provides an air conditioner having the above oil separator.

[0006] The oil separator according to the first aspect of the utility model includes: a tank body, an oil outlet and a refrigerant outlet are arranged on the tank body, the tank body is vertically arranged and the refrigerant outlet is higher than the oil outlet; an inlet pipe, the outlet end of the inlet pipe is connected to the tank body, the outlet end is higher than the oil outlet and lower than the refrigerant outlet, and the axial line of the outlet end deviates from the central axis of the tank body.

[0007] According to the oil separator of the embodiment of the utility model, by arranging the axial line of the outlet end of the inlet pipe to deviate from the central axis of the tank body, the direct collision between the mixture of lubricating oil and gaseous refrigerant and the tank body is improved, the kinetic energy loss is reduced, the mixture can do centrifugal motion along the tangential direction of the tank body, the separation speed of the lubricating oil and the gaseous refrigerant can be accelerated, and the separation effect is improved.

[0008] In some embodiments, the eccentric distance between the axial line of the outlet end and the central axis of the tank body is greater than one-fourth of the radius of the tank body.

[0009] In some embodiments, a filter screen is arranged in the tank body to divide the space in the tank body into a first space and a second space on both sides of the filter screen. The filter screen is higher than the outlet end of the inlet pipe and lower than the refrigerant outlet. The refrigerant outlet is communicated with the first space, the oil outlet is communicated with the second space, and the outlet end of the inlet pipe is communicated with the second space.

[0010] In some embodiments, a spiral structure extending along a spiral line is provided on the inner circumference of the tank body, and the spiral structure is lower than the outlet end of the inlet pipe and at least partially higher than the oil outlet.

[0011] In some embodiments, a spiral groove is formed on the inner peripheral wall of the tank body, and the spiral groove constitutes the spiral structure.

[0012] In some embodiments, a corrugated pipe is provided in the tank body, and the thread ribs on the inner peripheral surface of the corrugated pipe constitute the spiral structure.

[0013] In some embodiments, the two axial ends of the corrugated pipe are respectively a first end and a second end. The first end of the corrugated pipe is in snap-fit connection with the tank body, and the second end of the corrugated pipe is in support cooperation with a support structure in the tank body to limit the axial movement of the corrugated pipe relative to the tank body.

[0014] In some embodiments, the inlet pipe includes a main pipe and branch pipes. There are at least two branch pipes, and all of them are connected to the main pipe. One end of each branch pipe far from the main pipe constitutes the outlet end to be connected to the tank body.

[0015] In some embodiments, there are two branch pipes, which are spaced apart in the up-and-down direction. The axial line of the outlet end defined by the two branch pipes is on the same side of the central axis of the tank body, or is respectively located on both sides of the central axis of the tank body.

[0016] The air conditioner according to the second aspect of the present invention includes an oil separator according to the first aspect of the present invention.

[0017] By providing the oil separator according to the first aspect, the working reliability of the air conditioner according to the present invention is improved.

[0018] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0019] Figure 1 is the front view of an oil separator according to an embodiment of the present invention;

[0020] Figure 2 is the cross-sectional view of the oil separator according to an embodiment of the present invention from a top-down perspective;

[0021] Figure 3 is the cross-sectional view of an oil separator according to an embodiment of the present invention;

[0022] Figure 4 is the cross-sectional view of an oil separator according to another embodiment of the present invention;

[0023] Figure 5 is a cross-sectional view of an oil separator according to another embodiment of the present utility model;

[0024] Figure 6 is a cross-sectional view of an oil separator according to yet another embodiment of the present utility model;

[0025] Figure 7 is according to Figure 6 the front view of the example shown;

[0026] Figure 8 is according to Figure 7 the A-A cross-sectional view of the example shown;

[0027] Figure 9 is a side view of an oil separator according to still another embodiment of the present utility model;

[0028] Figure 10 is according to Figure 9 the front view of the example shown;

[0029] Figure 11 is according to Figure 10 the B-B cross-sectional view of the example shown.

[0030] Reference numerals:

[0031] oil separator 100;

[0032] tank body 1; oil outlet 11; refrigerant outlet 12; central axis L2 of the tank body; radius R of the tank body; first space 1a; second space 1b; spiral structure 13; spiral groove 131; support structure 14; clamping projection 15;

[0033] intake pipe 2; outlet end 21; axial line L1 of the outlet end; eccentricity W; main pipe 2a; branch pipe 2b;

[0034] filter screen 3;

[0035] bellows 4; thread ribs 41; first end 42; second end 43. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can recognize the applicability of other processes and / or the use of other materials.

[0038] The oil separator 100 according to an embodiment of the first aspect of the present utility model will be described below with reference to the accompanying drawings.

[0039] The oil separator 100 according to an embodiment of the present utility model, as Figures 1 - 3 shown, the oil separator 100 includes: a tank body 1 and an intake pipe 2. An oil outlet 11 and a refrigerant outlet 12 are provided on the tank body 1. The tank body 1 is vertically arranged and the refrigerant outlet 12 is higher than the oil outlet 11. The outlet end 21 of the intake pipe 2 is connected to the tank body 1. The outlet end 21 is higher than the oil outlet 11 and lower than the refrigerant outlet 12. The axial line L1 of the outlet end deviates from the central axis L2 of the tank body.

[0040] The intake pipe 2 conveys a mixture of lubricating oil and gaseous refrigerant to the tank body 1. After the mixture enters the tank body 1 through the outlet end 21 and is separated, under the action of gravity, the lubricating oil is discharged from the lower oil outlet, and the gaseous refrigerant flows out from the upper refrigerant outlet 12.

[0041] By arranging the axial line L1 of the outlet end of the intake pipe 2 to deviate from the central axis L2 of the tank body, that is, the axial line L1 of the outlet end does not pass through the central axis L2 of the tank body, the mixture flowing out from the outlet end 21 deviates from the central axis L2 of the tank body and flows out. Compared with the oil separator in the related art, the oil separator 100 according to the embodiment of the present utility model changes the flow direction of the mixture of lubricating oil and gaseous refrigerant, provides a tangential velocity for the mixture, so that the mixture makes a centrifugal motion along the tangent of the tank body 1 when flowing out from the outlet end 21, and the mixture rotates and flows downward in the tank body 1, thereby realizing oil-gas separation through centrifugal force and gravity.

[0042] During the centrifugal motion of the mixture, due to the differences in density and viscosity, the lubricating oil and the gaseous refrigerant will separate. Since the density and viscosity of the lubricating oil are relatively large, during the process of reducing the flow rate and changing the direction, it will adhere to the inner wall of the tank body 1. The separated lubricating oil will gather at the bottom of the tank body 1 under the action of gravity and flow out from the oil outlet 11; the gaseous refrigerant after separating the lubricating oil will be discharged from the refrigerant outlet 12 at the top of the tank body 1. Finally, the lubricating oil returns to the compressor through the capillary tube, which can improve the occurrence of high-pressure protection of the unit and improve the damage of the compressor caused by insufficient lubricating oil volume.

[0043] According to the oil separator 100 of the embodiment of the present invention, by setting the axial line L1 of the outlet end of the intake pipe 2 to deviate from the central axis L2 of the tank body, it improves the direct collision between the mixture of the lubricating oil and the gaseous refrigerant and the tank body 1, reduces the kinetic energy loss, enables the mixture to do centrifugal motion along the tangential direction of the tank body 1, can accelerate the separation speed of the lubricating oil and the gaseous refrigerant, and improves the separation effect.

[0044] In some embodiments of the present invention, as Figure 2 shown, the eccentric distance W between the axial line L1 of the outlet end and the central axis L2 of the tank body is greater than one-fourth of the radius R of the tank body.

[0045] The outlet end 21 of the intake pipe 2 is located on one side of the central axis L2 of the tank body, and the outlet end 21 is eccentric by more than 25% relative to the central axis L2 of the tank body, that is, the eccentric distance W is greater than one-fourth of the radius R of the tank body, so as to ensure a good centrifugal effect.

[0046] In some embodiments of the present invention, as Figure 3 shown, a filter screen 3 is provided in the tank body 1 to divide the space in the tank body 1 into a first space 1a and a second space 1b on both sides of the filter screen 3. The filter screen 3 is higher than the outlet end 21 of the intake pipe 2 and lower than the refrigerant outlet 12. The refrigerant outlet 12 is communicated with the first space 1a, the oil outlet 11 is communicated with the second space 1b, and the outlet end 21 of the intake pipe 2 is communicated with the second space 1b.

[0047] The intake pipe 2 transports the mixture of the lubricating oil and the gaseous refrigerant into the second space 1b. The filter screen 3 can separate the intake pipe 2 and the refrigerant outlet 12, avoiding the lubricating oil flowing in from the intake pipe 2 from directly splashing onto the refrigerant outlet 12, and improving the cleanliness of the refrigerant outlet 12. And by setting the filter screen 3, the gaseous refrigerant after centrifugal separation can be filtered twice, and the gaseous refrigerant flowing towards the refrigerant outlet 12 can be filtered again, screening out the lubricating oil droplets in the gaseous refrigerant, and further improving the separation effect.

[0048] In some embodiments of the present invention, as Figure 4 and Figure 5As shown, a spiral structure 13 extending along a spiral line is provided on the inner circumference of the tank body 1. The spiral structure 13 is lower than the outlet end 21 of the intake pipe 2 and at least partially higher than the oil outlet 11.

[0049] By providing the spiral structure 13, it can play a guiding role in the flow of the mixture. When the mixture flows out from the outlet end 21, it makes a centrifugal motion along the tangential direction of the tank body 1, and the spiral structure 13 can make the centrifugal motion of the mixture smoother, improving the centrifugal separation effect of the lubricating oil and the gaseous refrigerant.

[0050] And by providing the spiral structure 13, compared with the inside of the smooth tank body 1, the contact area between the mixture and the spiral structure 13 can be made larger, and the lubricating oil is more likely to adhere to the spiral structure 13, which can further improve the centrifugal separation effect of the lubricating oil and the gaseous refrigerant. During the centrifugal motion of the mixture, the lubricating oil impacts the spiral structure 13 multiple times and is more likely to adhere to the inside of the tank body 1. The separated lubricating oil gathers at the bottom of the tank body 1 under the action of gravity and flows out from the oil outlet 11; the gaseous refrigerant after separating the lubricating oil is discharged from the refrigerant outlet 12 at the top of the tank body 1.

[0051] In some embodiments of the present invention, as Figure 4 shown, a spiral groove 131 is formed on the inner peripheral wall of the tank body 1, and the spiral groove 131 constitutes the spiral structure 13. The spiral groove 131 is directly formed on the inner peripheral wall of the tank body 1, which can improve the integrity of the tank body 1 and the structural stability of the tank body 1.

[0052] The mixture of the lubricating oil and the gaseous refrigerant enters the tank body 1 from the outlet end 21 of the intake pipe 2. Since the internal volume of the tank body 1 is relatively large, the flow rate of the mixture decreases and the direction changes to make a centrifugal motion along the tangential direction of the tank body 1. Due to the relatively large density and viscosity of the lubricating oil, it will adhere to the inner peripheral wall of the tank body 1 during the process of decreasing flow rate and changing direction. The spiral groove 131 not only plays a guiding role, but also when the mixture enters the tank body 1, the oil molecules impact the spiral groove 131 multiple times, thereby forming oil droplets distributed along the spiral groove 131. The oil droplets deposit at the bottom of the tank body 1 under the action of gravity, and at the same time, the gaseous refrigerant will flow out from the refrigerant outlet 12 above.

[0053] In some other embodiments of the present invention, as Figure 5 shown, a corrugated pipe 4 is provided in the tank body 1, and the thread ribs 41 on the inner peripheral surface of the corrugated pipe 4 constitute the spiral structure 13. By providing the corrugated pipe 4 in the tank body 1 to form the spiral structure 13, compared with directly machining the spiral structure 13 on the inner peripheral wall of the tank body 1, the manufacturing difficulty can be reduced and the production and manufacturing cost can be saved.

[0054] The upper end of the corrugated pipe 4 is lower than the outlet end 21 of the intake pipe 2. The mixture of lubricating oil and gaseous refrigerant enters the tank body 1 from the outlet end 21 of the intake pipe 2. Due to the relatively large internal volume of the tank body 1, the flow rate of the mixture decreases, and the direction changes to make a centrifugal movement along the tangential direction of the tank body 1. The mixture flows onto the inner peripheral wall of the corrugated pipe 4. Since the density and viscosity of the lubricating oil are relatively large, during the process of decreasing flow rate and changing direction, it will adhere to the corrugated pipe 4. The corrugated pipe 4 not only plays a guiding role, but also when the mixture enters the pipe, the oil molecules hit the spiral ribs multiple times, thereby forming oil molecules distributed along the inner peripheral surface of the corrugated pipe 4. The oil molecules deposit at the bottom of the tank body 1 under the action of gravity, and at the same time, the gaseous refrigerant medium will flow out from the refrigerant outlet 12 above.

[0055] In some embodiments of the present invention, as Figure 5 shown, a corrugated pipe 4 is provided in the tank body 1. The axial two ends of the corrugated pipe 4 are respectively a first end 42 and a second end 43. The first end 42 of the corrugated pipe 4 is clamped and matched with the tank body 1, and the second end 43 of the corrugated pipe 4 is supported and matched with the support structure 14 in the tank body 1 to limit the axial movement of the corrugated pipe 4 relative to the tank body 1.

[0056] As Figure 5 shown, the second end 43 of the corrugated pipe 4 is located below the first end 42. The second end 43 of the corrugated pipe 4 is supported by the support structure 14. The first end 42 of the corrugated pipe 4 is clamped and matched with the tank body 1. The assembly of the corrugated pipe 4 and the tank body 1 is convenient, the operation is simple, and the installation efficiency can be improved.

[0057] In some embodiments of the present invention, as Figure 5 shown, the second end 43 of the corrugated pipe 4 is constructed as an annular platform protruding towards the outside of the tank body 1. A support structure 14 protruding towards the inside is provided on the inner peripheral surface of the tank body 1, and the support structure 14 is supported and matched below the annular platform of the second end 43; a clamping protrusion 15 protruding towards the inside is also provided on the inner peripheral surface of the tank body 1. The clamping protrusion 15 is closer to the refrigerant outlet 12 than the support structure 14, and the clamping protrusion 15 is clamped and matched with the corrugated pipe 4.

[0058] In some other embodiments of the present invention, the second end 43 of the corrugated pipe 4 is constructed as an annular platform protruding towards the outside of the tank body 1, and the first end 42 of the corrugated pipe 4 is also constructed as a convex platform protruding towards the outside of the tank body 1.

[0059] A support structure 14 protruding towards the inside of the tank body 1 is provided on the inner peripheral surface of the tank body 1, and the support structure 14 is supported and matched below the annular platform of the second end 43; a clamping groove recessed towards the outside of the tank body 1 is also provided on the inner peripheral surface of the tank body 1. The clamping groove is closer to the refrigerant outlet 12 than the support structure 14, and the convex platform is inserted into the clamping groove to make the corrugated pipe 4 clamped and matched with the tank body 1.

[0060] In some embodiments of the present utility model, as Figure 5 shown, the corrugated pipe 4 and the inner circumference of the tank body 1 are arranged at intervals. The outer circumferential surface of the corrugated pipe 4 is also formed into a spiral structure 13. When the mixture enters the gap between the outer circumferential surface of the corrugated pipe 4 and the inner circumferential wall of the tank body 1, the mixture can also contact the outer circumferential surface of the corrugated pipe 4 and the inner circumferential wall of the tank body 1. The contact area between the mixture and the tank body 1 and the corrugated pipe 4 is larger, and the lubricating oil is more likely to adhere, which can further improve the centrifugal separation effect of the lubricating oil and the gaseous refrigerant. And because the outer circumferential surface of the corrugated pipe 4 is also formed into a spiral structure 13, it can also play a guiding role in the flow of the mixture, improving the centrifugal separation effect of the lubricating oil and the gaseous refrigerant.

[0061] In some embodiments of the present utility model, as Figure 6 and Figure 9 shown, the intake pipe 2 includes a main pipe 2a and branch pipes 2b. There are at least two branch pipes 2b, and each branch pipe 2b is connected to the main pipe 2a. One end of each branch pipe 2b away from the main pipe 2a constitutes an outlet end 21 to be connected to the tank body 1.

[0062] By setting the intake pipe 2 to have at least two branch pipes 2b, at least two outlet ends 21 can transport the mixture of lubricating oil and gaseous refrigerant into the tank body 1. On the one hand, the transport channels are increased, which can improve the transport volume of the mixture transported into the tank body 1 and improve the transport efficiency; on the other hand, the mixture enters the branch pipes 2b from the main pipe 2a, and the flow rate of the mixture slows down. When it enters the tank body 1, the flow rate decreases again, realizing secondary deceleration. This can enable the lubricating oil and the gaseous refrigerant to be initially separated in the intake pipe 2 and further separated in the tank body 1, improving the separation efficiency of the lubricating oil and the gaseous refrigerant.

[0063] Optionally, the number of the branch pipes 2b can be two, or the number of the branch pipes 2b can be more, and all of these fall within the protection scope of the present utility model.

[0064] In some embodiments of the present utility model, as Figure 7 shown, there are two branch pipes 2b, which are arranged at intervals in the up-down direction. The axial line L1 of the outlet end defined by the two branch pipes 2b is on the same side of the central axis L2 of the tank body.

[0065] As Figure 8 shown, the dashed line with an arrow is the flow direction of the mixture of lubricating oil and gaseous refrigerant flowing from the outlet end 21 into the tank body 1. The mixture flowing out from the outlet ends 21 of the two branch pipes 2b rotates and separates in the same direction.

[0066] The mixture enters the tank body 1 from two outlet ends 21 respectively, which can effectively increase the flow rate. And when the mixture flows from the main pipe 2a to the branch pipes 2b in the intake pipe 2, it will be decelerated and divided into two paths to enter the tank body 1. The flow rate of the mixture entering the tank body 1 is reduced again, and the flow direction is changed. During the process of reducing the flow rate and changing the direction, the lubricating oil will adhere to the inner wall of the tank body 1. The separated lubricating oil will gather at the bottom of the tank body 1 under the action of gravity and flow out from the oil outlet 11, and the gaseous refrigerant is discharged from the refrigerant outlet 12 at the top of the tank body 1.

[0067] In some other embodiments of the present invention, such as Figure 9 and Figure 10 shown, there are two branch pipes 2b which are arranged at intervals in the up-and-down direction. The axial lines L1 of the outlet ends defined by the two branch pipes 2b are respectively located on both sides of the central axis L2 of the tank body.

[0068] As Figure 11 shown, the dashed line with arrows is the flow direction of the mixture of lubricating oil and gaseous refrigerant from the outlet end 21 into the tank body 1. The mixtures flowing out from the outlet ends 21 of the two branch pipes 2b are separated by counter-rotating.

[0069] Similarly, the mixture enters the tank body 1 from two outlet ends 21 respectively, which can effectively increase the flow rate. And when the mixture flows from the main pipe 2a to the branch pipes 2b in the intake pipe 2, it will be decelerated and divided into two paths to enter the tank body 1. The flow rate of the mixture entering the tank body 1 is reduced again, and the flow direction is changed. During the process of reducing the flow rate and changing the direction, the lubricating oil will adhere to the inner wall of the tank body 1. The separated lubricating oil will gather at the bottom of the tank body 1 under the action of gravity and flow out from the oil outlet 11, and the gaseous refrigerant is discharged from the refrigerant outlet 12 at the top of the tank body 1.

[0070] In still some other embodiments of the present application, there are two branch pipes 2b which are arranged at the same height in the up-and-down direction.

[0071] The number and structure of the branch pipes 2b can be selected according to actual needs, which all fall within the protection scope of the present application.

[0072] Next, the air conditioner according to the second aspect embodiment of the present invention will be described.

[0073] The air conditioner according to the embodiment of the present invention includes the oil separator 100 according to the first aspect embodiment of the present invention.

[0074] By arranging the oil separator 100 according to the first aspect of the present invention, the working reliability of the air conditioner can be improved according to the air conditioner of the embodiment of the present invention.

[0075] In some embodiments of the present utility model, an oil separator 100 is provided between the exhaust port of the compressor and the condenser. The oil separator 100 is used to separate the lubricating oil in the high-pressure gas discharged from the compressor, so that the lubricating oil can return to the compressor to ensure its normal operation, prevent the compressor from lacking oil, and at the same time, avoid excessive oil from entering the condenser and the evaporator, affecting the heat exchange efficiency.

[0076] In some other embodiments of the present utility model, an oil separator 100 is provided at the intake port of the compressor. The oil separator 100 is used to separate the lubricating oil in the refrigerant, so that the lubricating oil can return to the compressor to ensure its normal operation, and prevent the compressor from compressing the lubricating oil, causing damage to the compressor, and improving the use safety of the compressor.

[0077] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0078] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0079] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0080] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0081] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0082] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An oil separator, characterized in that: include: A tank body, wherein an oil outlet and a refrigerant outlet are provided on the tank body, the tank body is placed vertically and the refrigerant outlet is higher than the oil outlet; An air inlet pipe, wherein the outlet end of the air inlet pipe is connected to the tank body, the outlet end is higher than the oil outlet and lower than the refrigerant outlet, and the axial line of the outlet end deviates from the central axis of the tank body.

2. The oil separator according to claim 1, characterized in that: The eccentric distance of the axial line of the outlet end relative to the central axis of the tank body is greater than one quarter of the radius of the tank body.

3. The oil separator according to claim 1, characterized in that: A filter is provided in the tank body to divide the space in the tank body into a first space and a second space on the upper and lower sides of the filter. The filter is higher than the outlet end of the air inlet pipe and lower than the refrigerant outlet. The refrigerant outlet is connected to the first space, the oil outlet is connected to the second space, and the outlet end of the air inlet pipe is connected to the second space.

4. The oil separator according to claim 1, characterized in that: The inner circumference of the tank body is provided with a spiral structure extending along a spiral line, wherein the spiral structure is lower than the outlet end of the air inlet pipe and at least partially higher than the oil outlet.

5. The oil separator according to claim 4, characterized in that: A spiral groove is formed on the inner peripheral wall of the tank body, and the spiral groove constitutes the spiral structure.

6. The oil separator according to claim 4, characterized in that: A bellows is arranged in the tank body, and the spiral ribs on the inner circumference of the bellows constitute the spiral structure.

7. The oil separator according to claim 6, characterized in that: The two axial ends of the bellows are respectively a first end and a second end. The first end of the bellows is snap-fitted with the tank body, and the second end of the bellows is supported and matched with a supporting structure in the tank body to limit the axial movement of the bellows relative to the tank body.

8. The oil separator according to claim 1, characterized in that: The air intake pipe comprises a main pipe and branch pipes, there are at least two branch pipes and both are connected to the main pipe, and one end of each branch pipe away from the main pipe constitutes the outlet end to be connected to the tank body.

9. The oil separator according to claim 8, characterized in that: There are two branch pipes which are spaced apart in the up-down direction. The axial lines of the outlet ends defined by the two branch pipes are located on the same side of the central axis of the tank body, or are located on both sides of the central axis of the tank body.

10. An air conditioner, characterized in that: Comprising an oil separator according to any one of claims 1-9.

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