CN115370580A - Oil-gas separation device, compressor and air conditioning system - Google Patents

Abstract

The utility model relates to a compressor technical field provides an oil-gas separation device, compressor and air conditioning system, and wherein, oil-gas separation device locates between the rotor end and the exhaust end of compressor, oil-gas separation device includes: the first oil baffle plate is arranged on one side of the rotor end facing the exhaust end, extends along the radial direction and is used for changing the flow direction of the oil-containing gas from the axial direction to the radial direction; and the second oil baffle is arranged on one side of the exhaust end, which is deviated from the first oil baffle, extends along the axial direction, and is used for attaching oil drops in the oil-containing gas to the second oil baffle and separating from the second oil baffle under the action of centrifugal force. The present invention is intended to reduce the number of parts and the number of parts to be used, and to achieve an oil retaining effect.

Description

Oil-gas separation device, compressor and air conditioning system

Technical Field

The application relates to the technical field of compressors, in particular to an oil-gas separation device, a compressor and an air conditioning system.

Background

During the operation of the compressor, the compressor refrigeration oil plays roles of lubricating, sealing, cooling and the like. However, when the compressor operates, because the refrigerant oil and the refrigerant have a certain intersolubility, the gaseous refrigerant discharged when the pump body of the compressor operates is high-temperature and high-speed gas, and a small amount of refrigerant oil in the compressor is taken out together and discharged into an air conditioning system. When the oil content of the gas discharged by the compressor is large, the refrigerant oil is easy to form a thick oil film on a condenser and an evaporator in an air conditioning system, the heat exchange efficiency of the air conditioning system is influenced, and meanwhile, the liquid level of the refrigerant oil in the compressor is reduced, so that the lubrication, the sealing and the like of a pump body are influenced, the reliability of the compressor is finally influenced, and the energy efficiency of the air conditioning system is reduced.

Among the correlation technique, adopt more and set up the part that has the fender oil effect in the rotor one end that is close to compressor exhaust end to reduce the oil yield of compressor, however this kind of technical scheme need use the cooperation of a plurality of parts just can exert the fender oil effect, and not only with high costs, assemble loaded down with trivial details moreover and be unfavorable for production.

Disclosure of Invention

The main purpose of this application is to provide an oil-gas separation device, compressor and air conditioning system, aims at reducing the quantity and the cooperation of part to can exert the oil retaining effect equally.

In a first aspect, the present application provides an oil-gas separation device located between a rotor end and a discharge end of a compressor, the oil-gas separation device comprising: the first oil baffle plate is arranged on one side of the rotor end facing the exhaust end, extends along the radial direction and is used for changing the flow direction of the oil-containing gas from the axial direction to the radial direction; and the second oil baffle is arranged on one side of the exhaust end, which is deviated from the first oil baffle, extends along the axial direction, and is used for attaching oil drops in the oil-containing gas to the second oil baffle and separating from the second oil baffle under the action of centrifugal force.

In one embodiment of the present application, the rotor has a plurality of flow holes for the oil-containing gas to flow through, and the plurality of flow holes are all located in an orthographic projection of the first oil baffle at the rotor end.

In an embodiment of the present application, the plurality of flow holes are located in an orthogonal projection of a circumference where the outermost end of the second oil baffle is located at the rotor end.

In an embodiment of the present application, an orthographic projection of the first oil baffle at the rotor end is circular or quadrilateral, and a cross section formed by a center line of the second oil baffle in a thickness direction of the second oil baffle is quadrilateral or triangular.

In an embodiment of the present application, a thickness direction of the first oil baffle is perpendicular to a thickness direction of the second oil baffle.

In an embodiment of the present application, the second oil baffle is disposed along an included angle between a center line of the second oil baffle in a thickness direction of the second oil baffle and any radial direction of the rotor end.

In one embodiment of this application, first fender oil board orientation one side of rotor end still is equipped with the balancing part, the balancing part with second fender oil board is along axial interval distribution, the rotor end has run through the bent axle along the axial, the balancing part is used for balancing the bent axle.

In an embodiment of this application, first oil baffle, and/or, the balancing part still includes a plurality of connecting holes of seting up along the axial, rotor end orientation one side of exhaust end has a plurality of connecting portions, and is a plurality of the connecting hole corresponds the setting respectively with a plurality of connecting portion.

In an embodiment of the present application, the second oil baffle is connected to the balance portion.

In one embodiment of the application, the second oil baffle is connected with the periphery of the connecting hole arranged on the second oil baffle, a first included angle a is formed between a center line of the second oil baffle in the thickness direction and a connecting line of the circle center of the rotor end and the circle center of the connecting hole, wherein a is more than or equal to 0 degree and less than or equal to 45 degrees.

In a second aspect, the present application provides a compressor comprising the oil-gas separation device of any one of the first aspects.

In a third aspect, the present application provides an air conditioning system comprising the compressor of the second aspect.

According to the oil-gas separation device that this application provided, locate between the rotor end and the exhaust end of compressor, oil-gas separation device includes: the first oil baffle plate is arranged on one side of the rotor end facing the exhaust end, extends along the radial direction and is used for changing the flow direction of the oil-containing gas from the axial direction to the radial direction; and the second oil baffle is arranged on one side of the exhaust end, which is deviated from the first oil baffle, extends along the axial direction, and is used for attaching oil drops in the oil-containing gas to the second oil baffle and separating from the second oil baffle under the action of centrifugal force. When oil-containing gas is discharged from the rotor end, the first oil baffle extends outwards along the radial direction, so that the flow path of the oil-containing gas is changed from the axial direction to the radial direction by the first oil baffle, the second oil baffle extends along the axial direction, the second oil baffle rotating along with the rotor end collides oil drops in the oil-containing gas, the oil drops are attached to the second oil baffle and fly away from the rotor end along the radial direction under the action of centrifugal force, and finally flow back to the pump body end of the compressor through the outer surface of the stator end, and the gas is discharged through the discharge end after winding the outer peripheral side of the first oil baffle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 illustrates a perspective view of an oil-gas separation device provided by an embodiment of the present application;

FIG. 2 illustrates a front view of an oil-gas separation device provided by an embodiment of the application;

FIG. 3 illustrates a cross-sectional view of a rotor end of a compressor and an oil-gas separation device according to an embodiment of the present application;

FIG. 4 illustrates an exploded view of a rotor end of a compressor and an oil-gas separation device provided by an embodiment of the application;

FIG. 5 illustrates a front view of another oil-gas separation device provided by an embodiment of the application.

The reference numerals are illustrated below:

10. an oil-gas separation device; 11. a first oil baffle plate; 12. a second oil baffle; 13. a balancing section; 14. connecting holes; 141. a first connection hole; 142. a second connection hole;

20. a rotor end; 21. a flow-through hole;

30. an exhaust end;

40. a pump body end;

A. the direction of rotation of the rotor end; B. direction of flow of the oil-laden gas; C. the direction of the centrifugal force.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

During the operation of the compressor, the refrigerant oil of the compressor plays roles of lubrication, sealing, temperature reduction and the like. However, when the compressor operates, because the refrigerant oil and the refrigerant have a certain intersolubility, the gaseous refrigerant discharged when the pump body of the compressor operates is high-temperature and high-speed gas, and a small amount of refrigerant oil in the compressor is brought out together and discharged into the air conditioning system. When the oil content of the gas discharged by the compressor is high, the refrigerant oil is easy to form a thick oil film on a condenser and an evaporator in the air-conditioning system, so that the heat exchange efficiency of the air-conditioning system is influenced, and meanwhile, the liquid level of the refrigerant oil in the compressor is reduced, so that the lubrication, the sealing and the like of a pump body are influenced, the reliability of the compressor is finally influenced, and the energy efficiency of the air-conditioning system is reduced. Among the correlation technique, adopt more and set up the part that has the fender oil effect in the rotor one end that is close to compressor exhaust end to reduce the oil yield of compressor, however this kind of technical scheme need use the cooperation of a plurality of parts just can exert the fender oil effect, and not only with high costs, assemble loaded down with trivial details moreover and be unfavorable for production.

In order to solve the technical problem, the embodiment of the application provides an oil-gas separation device, a compressor and an air conditioning system.

Embodiments relating to oil and gas separation devices

FIG. 1 illustrates a perspective view of an oil-gas separation device provided by an embodiment of the present application; FIG. 2 illustrates a front view of an oil-gas separation device provided by an embodiment of the present application; FIG. 3 illustrates a cross-sectional view of a rotor end of a compressor and an oil-gas separation device provided by an embodiment of the application; fig. 4 shows an exploded view of a rotor end and an oil-gas separation device of a compressor according to an embodiment of the present application.

Referring to fig. 1-4, the present application provides an oil-gas separation device 10 disposed between a rotor end 20 and a discharge end 30 of a compressor, the oil-gas separation device 10 comprising: the first oil baffle plate 11 is arranged on one side of the rotor end 20 facing the exhaust end 30, and the first oil baffle plate 11 extends along the radial direction and is used for changing the flowing direction of the oil-containing gas from the axial direction to the radial direction; and a second oil baffle 12, which is arranged on one side of the exhaust end 30 deviated from the first oil baffle 11, wherein the second oil baffle 12 extends along the axial direction and is used for attaching oil drops in the oil-containing gas to the second oil baffle 12 and separating from the second oil baffle 12 under the action of centrifugal force.

Note that, a is the rotation direction of the rotor end 20, B is the flow direction of the oil-containing gas, and C is the centrifugal force direction, or the oil drop throwing-out direction.

When oil-containing gas is discharged from the rotor end 20, the first oil baffle 11 extends radially outwards, so that the flow path of the oil-containing gas is changed from the axial direction to the radial direction by the first oil baffle 11, the second oil baffle 12 extends axially, the second oil baffle 12 rotating along with the rotor end 20 collides oil drops in the oil-containing gas, the oil drops attach to the second oil baffle 12 and fly away from the rotor end 20 along the radial direction under the action of centrifugal force, and finally flow back to the pump body end 40 of the compressor through the outer surface of the stator end, and the gas is discharged through a discharge end after bypassing the outer periphery side of the first oil baffle 11.

Further, when the compressor operates at high frequency, the oil content of the refrigerant discharged from the pump body end 40 is higher than that during low-frequency operation, and at this time, the rotor end 20 rotating at high speed drives the oil-gas separation device 10 to perform cyclic impact with higher frequency on oil-containing gas, so that the oil-gas separation effect is enhanced. That is, the higher the operating frequency of the compressor, the higher the oil content in the gas will be, and at the same time, the faster the rotor end 20 rotates, the higher the frequency of the oil-gas separation device 10 hitting the oil-containing gas is, and the better the oil-gas separation effect is. Namely, when the oil content in the gas is increased due to high-frequency operation of the compressor, the oil-gas separation effect of the embodiment of the invention is synchronously enhanced, so that the oil discharge rate of the compressor is effectively reduced.

In some embodiments, the thickness direction of the first oil deflector 11 is perpendicular to the thickness direction of the second oil deflector 12. The thickness direction of the first oil baffle plate 11 is along the axial direction of the rotor end 20, the thickness direction of the second oil baffle plate 12 is perpendicular to the axial direction of the rotor end 20, the first oil baffle plate 11 and the second oil baffle plate 12 are perpendicular to each other, the first oil baffle plate 11 and the second oil baffle plate 12 can rotate along with the rotor end 20, the rotation direction of the second oil baffle plate 12 is perpendicular to the movement direction of the oil-containing gas, and the second oil baffle plate 12 can vertically impact the oil-containing gas coming out of the rotor end 20, so that oil drops in the gas are attached to the second oil baffle plate and thrown to the stator end under the action of centrifugal force to flow back, and the oil-gas separation effect is achieved; meanwhile, the oil-containing gas can be directly converted into radial gas and output towards the exhaust end 30 when meeting the first oil baffle 11, so that the contact between the oil-containing gas and other structural surfaces is reduced, and the oil gas is fully separated.

Further, the second oil baffle 12 is disposed along a center line in a thickness direction thereof and forms an included angle with any radial direction of the rotor end 20. Because the second oil baffle 12 has an included angle with any radial direction of the rotor end 20 along the center line in the thickness direction of the second oil baffle 12, the oil-containing gas output from the rotor end 20 can fully contact with the second oil baffle 12, the contact area between the second oil baffle 12 and the oil-containing gas is increased, and the oil-gas separation effect is enhanced. Specifically, the orthographic projection of the first oil baffle 11 on the rotor end 20 is a polygon such as a circle, a quadrangle, or other irregular shape, and the cross section formed by the second oil baffle 12 along the center line in the thickness direction thereof is a quadrangle, a triangle, or other irregular shape.

In this embodiment, the rotor has a plurality of flow holes 21 through which the oil-containing gas flows, and each of the plurality of flow holes 21 is located in an orthogonal projection of the first oil baffle 11 at the rotor end 20. It is to be ensured that all the oil-containing gas discharged through the flow holes 21 will hit the first oil baffle 11 and change the transfer direction through the first oil baffle 11, i.e. axial direction is changed into radial direction, so that the gas is discharged through the discharge end and oil drops thrown away from the second oil baffle 12 flow back to the pump body end 40 through the stator end.

Meanwhile, the plurality of flow holes 21 are all located in the orthographic projection of the rotor end 20 of the circumference where the outermost end of the second oil baffle 12 is located. That is, in the process that the second oil baffle 12 rotates along with the rotor end 20, because the second oil baffle 12 is in a long strip shape, the motion trajectory of the second oil baffle is in a circular shape, that is, the inner side and the outer side of the second oil baffle 12 are respectively located at the inner ring and the outer ring of the circular ring, and the plurality of circulation holes 21 are all located in the projection of the circular ring, that is, the moving area of the second oil baffle 12 when rotating along with the rotor end 20 covers the rotating moving area of all the circulation holes 21, so that the oil-containing gas introduced into all the circulation holes 21 is introduced into the circular ring, and in the process that the rotor end 20 rotates, most of the oil-containing gas can impact the inner wall of the second oil baffle 12 after being converted into radial output, so that oil drops are attached to the second oil baffle 12 and fly away from the rotor end 20 in the radial direction under the action of centrifugal force, thereby increasing the contact area between the oil-containing gas and the second oil baffle 12, and further enhancing the oil-gas separation effect.

In this embodiment, the rotor end 20 has run through the bent axle along the axial, because the bent axle has partial structure to be the angle with other positions and is connected, in order to guarantee the stability when the rotor rotates first oil baffle 11 towards one side of rotor end 20 is provided with balancing unit 13, balancing unit 13 with rotor end 20 is along axial interval distribution, balancing unit 13 with the bent axle is towards the one end cooperation of discharge end for the balance the bent axle prevents to produce when it rotates and rocks.

In order to fix the oil-gas separation device 10 and the rotor end 20 and enable the oil-gas separation device and the rotor end 20 to rotate synchronously, the first oil baffle 11 and/or the balance part 13 further comprise a plurality of connecting holes 14 formed in the axial direction, one side, facing the exhaust end 30, of the rotor end 20 is provided with a plurality of connecting parts, the connecting holes 14 and the connecting parts are respectively and correspondingly arranged, namely the first oil baffle 11 and the rotor end 20 are fixed through riveting, and the second oil baffle 12 is fixed on the first oil baffle 11, so that synchronous rotation is achieved, the machining process is simple, and part assembly is reduced.

Wherein the plurality of connection holes 14 includes: a first connection hole 141, the first connection hole 141 being opened in the balancing part 13 in an axial direction; and a second connection hole 142, wherein the second connection hole 142 is axially opened in the first oil baffle 11. Through set up first connecting hole 141 on balancing portion 13 to directly set up second connecting hole 142 at first fender oil board 11, can make oil-gas separation device 10 fixed with rotor end 20 respectively in a plurality of different positions, guarantee the reliability of connecting, and increase stability when integrative rotating.

It should be noted that the first connection hole 141 and the second connection hole 142 may be through holes or blind holes, and the second connection hole 142 may be provided at least one of a connection area of the balance portion 13 and the first oil deflector 11, a connection area of the balance portion 13 and the second oil deflector 12, and any position where the first oil deflector 11 is not provided with the second oil deflector 12 and the balance portion 13.

With continued reference to fig. 1-4, the present application provides an oil-gas separation device 10, which includes a balance portion 13 and two second oil baffle plates 12, wherein the balance portion 13 is provided with two connecting holes 14, the two oil baffle plates are respectively connected with the two connecting holes 14 directly formed on the first oil baffle plate 11, and other positions of the first oil baffle plate 11 are further provided with one connecting hole 14. The second oil baffle 12 is connected to the outer periphery of one of the second connecting holes 142, and a first included angle a is formed between the second oil baffle 12 and a connection line between the center of the rotor end 20 and the center of the second connecting hole 142 along a central axis perpendicular to the axial direction, wherein a is greater than or equal to 0 degrees and less than or equal to 45 degrees. Preferably, a =5 ° can effectively reduce the wind resistance, and simultaneously, the contact path of the oil-containing gas and the second oil baffle 12 is extended, so as to enhance the oil-gas separation effect.

Fig. 5 shows a front view of another oil-gas separation device 10 provided in the embodiments of the present application.

Or, referring to fig. 5, the present application provides an oil-gas separation device 10, which includes two balance portions 13 and a second oil baffle 12, where the second oil baffle 12 is connected to a middle position of the balance portions 13, each balance portion 13 is provided with a connection hole 14, and two connection holes 14 are provided at positions where the balance portions 13 are not provided on the first oil baffle 11.

In any scheme, the balance part 13 and the second oil baffle 12 are both arranged on the same side of the first oil baffle 11, wherein the height of the balance part 13 is H1, the height of the second oil baffle is H2, and H1 is more than or equal to H2; the thickness of the first oil baffle sheet is T1, the thickness of the second oil baffle sheet is T2, T1 is less than or equal to 3mm, and T2 is less than or equal to 3mm.

It should be noted that, since the first oil baffle 11, the second oil baffle 12, and the balance portion 13 of the embodiment of the present application are of an integrated structure, the number of parts can be reduced, the process can be simplified, the assembly efficiency can be improved, and the cost can be reduced.

Embodiments relating to compressors

On the basis of the above embodiment, the present application provides a compressor, which comprises the oil-gas separation device 10.

The present invention provides a compressor comprising an oil-gas separation device 10, a motor and a pump body end 40. The motor has a rotor end 20 and a stator end around the periphery of the rotor end 20, a crankshaft is arranged in the rotor end 20, and a pump body end 40 is connected to the crankshaft, is driven by the motor and is used for compressing and vaporizing oil in the working chamber. The oil-gas separation device 10 of the above-described construction is fitted to the side of the rotor end 20 of the motor facing away from the pump body end 40.

Embodiments relating to air-conditioning systems

On the basis of the above embodiment, the present application further provides an air conditioning system including the compressor. It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. The utility model provides an oil-gas separation device which characterized in that, locates between the rotor end and the exhaust end of compressor, oil-gas separation device includes:

the first oil baffle plate is arranged on one side of the rotor end facing the exhaust end, extends along the radial direction and is used for changing the flow direction of the oil-containing gas from the axial direction to the radial direction; and

the second oil baffle, set up in first oil baffle deviates from one side of exhaust end, second oil baffle extends along the axial, be used for with oil drop in the oily gas is attached to break away from on the second oil baffle and under the effect of centrifugal force the second oil baffle.

2. The oil and gas separation device according to claim 1, wherein the rotor has a plurality of flow holes through which the oil-containing gas flows, the plurality of flow holes each being located within an orthographic projection of the first oil baffle at the rotor end.

3. The oil-gas separation device according to claim 2, wherein the plurality of flow holes are all located in an orthographic projection of a circumference of the outermost end of the second oil baffle on the rotor end.

4. The oil-gas separation device according to any one of claims 1 to 3, wherein an orthographic projection of the first baffle at the rotor end is circular or quadrangular, and a cross section of the second baffle formed along a center line in a thickness direction thereof is quadrangular or triangular.

5. The oil-gas separation device of claim 1, wherein the thickness direction of the first baffle plate is perpendicular to the thickness direction of the second baffle plate.

6. The oil-gas separation device according to claim 1, wherein the second oil baffle is arranged at an included angle between a center line in a thickness direction of the second oil baffle and any radial direction of the rotor end.

7. The oil-gas separation device according to claim 1, wherein a balance part is further arranged on one side of the first oil baffle facing the rotor end, the balance part and the second oil baffle are axially distributed at intervals, a crankshaft axially penetrates through the rotor end, and the balance part is used for balancing the crankshaft.

8. The oil-gas separation device according to claim 7, wherein the first oil baffle plate and/or the balance portion further comprises a plurality of connecting holes formed along the axial direction, one side of the rotor end facing the exhaust end is provided with a plurality of connecting portions, and the plurality of connecting holes and the plurality of connecting portions are respectively arranged correspondingly.

9. The oil-gas separation device according to claim 8, wherein the second baffle is connected to the balance portion.

10. The oil-gas separation device according to claim 8, wherein the second oil baffle is connected to an outer peripheral side of the connection hole provided in the second oil baffle, and a first included angle a is formed between a center line of the second oil baffle in the thickness direction of the second oil baffle and a line connecting the center of the rotor end and the center of the connection hole, wherein a is greater than or equal to 0 degrees and less than or equal to 45 degrees.

11. A compressor, characterized by comprising the oil-gas separation device according to any one of claims 1 to 10.

12. An air conditioning system characterized by comprising the compressor of claim 11.

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