WO2019019543A1

WO2019019543A1 - Compressor pump body, compressor and air-conditioner

Info

Publication number: WO2019019543A1
Application number: PCT/CN2017/118246
Authority: WO
Inventors: 叶晓飞; 赵旭敏; 王伟; 陈辉; 竺宁凯
Original assignee: 珠海格力节能环保制冷技术研究中心有限公司
Priority date: 2017-07-26
Filing date: 2017-12-25
Publication date: 2019-01-31
Also published as: CN107355383A

Abstract

A compressor pump body, comprising a crankshaft (1) and an oil delivery structure (2), the crankshaft (1) being provided with an oil drain hole (11); the oil delivery structure (2) is used for delivering a refrigeration oil drained from the oil drain hole (11) to the bottom of the compressor pump body along a flow passage spaced apart from a gaseous refrigerant. A compressor and an air conditioner having the compressor pump body. As the oil delivery structure separates the refrigeration oil from the gaseous refrigerant, the flow resistance of the refrigerant to the refrigeration oil and the dissolution of the refrigeration oil in the refrigerant can be reduced, further improving the return rate of the refrigeration oil. In addition, the invention effectively reduces the refrigeration oil content in the refrigerant and guarantees that the refrigeration oil at the bottom of the compressor pump body is sufficient, ensuring the components of the compressor to be sufficiently lubricated, reducing the power consumption of the compressor, improving the reliability of the compressor.

Description

Compressor pump body, compressor and air conditioner

Technical field

The invention relates to the technical field of household appliances, in particular to a compressor pump body, a compressor and an air conditioner.

Background technique

Reducing compressor power consumption and increasing compressor reliability have always been a major concern for rotary compressor designers.

The compressor includes a crankshaft, a main bearing, a roller, and a sub-bearing. An oil guiding piece is arranged on the crankshaft. During the working process, the oil guiding piece rotates with the crankshaft, and the freezing oil at the bottom of the compressor is transported to the auxiliary bearing, the roller and the main bearing through the central oil passage and the oil guiding hole of the crankshaft under the centrifugal force generated by the oil guiding piece. With the friction surface, the moving parts are cooled under the lubrication oil, the friction is reduced, the power consumption is reduced, and the reliability is improved. When the compressor is running at high speed, the centrifugal force provided by the oil guide piece is increased, and the pumping capacity is improved. In order to reduce the oil resistance, a common design is to provide an oil drain hole in the shaft section of the crankshaft extending from the main bearing or the top end of the crankshaft, and part of the frozen oil flows directly through the oil drain hole on the crankshaft, and flows back to the compressor pump body through the gap of each component. bottom. Because the downward flowing refrigerant oil is subjected to upward moving refrigerant resistance, the compressor refrigeration oil return rate is slow, and part of the refrigerating oil is dissolved by the refrigerant, which is taken out of the compressor, and the compressor discharge rate is increased, resulting in the bottom of the compressor pump body. The amount of refrigerating oil is reduced, resulting in insufficient lubrication of each component, increased friction, increased power consumption, and reduced reliability.

Summary of the invention

In view of this, the present invention provides a compressor pump body, a compressor, and an air conditioner, and the main purpose thereof is to solve the technical problem that the return speed of the refrigeration oil of the existing compressor is slow at high frequency operation.

In order to achieve the above object, the present invention mainly provides the following technical solutions:

In one aspect, an embodiment of the present invention provides a compressor pump body including a crankshaft having an oil drain hole therein; the compressor pump body further includes:

An oil delivery structure for conveying the chilled oil discharged from the oil drain hole to a bottom of the compressor pump body along a flow path spaced apart from the gaseous refrigerant.

The object of the present invention and solving the technical problems thereof can be further achieved by the following technical measures.

In the foregoing compressor pump body, optionally, the oil delivery structure includes an oil delivery pipe for conveying the refrigeration oil discharged from the oil discharge hole through the oil pipeline to the flow path separated from the gaseous refrigerant. The bottom of the compressor pump body.

In the foregoing compressor pump body, optionally, the compressor pump body further includes a main bearing, and the main bearing is provided with a sleeve hole to be sleeved on the crankshaft through the sleeve hole;

The main bearing is further provided with an oil outlet hole, and the oil outlet hole penetrates from the outer surface of the main bearing to the sleeve hole;

Wherein the oil drain hole of the crankshaft is located in the sleeve hole, and is opposite to the oil outlet hole when the crankshaft is rotated to a set position; one end of the oil pipeline is connected with the oil outlet hole, and another One end is for conveying the refrigerant oil discharged from the oil discharge hole to the bottom of the compressor pump body along a flow path separated from the gaseous refrigerant.

In the foregoing compressor pump body, optionally, the compressor pump body is vertically arranged;

The other end of the oil delivery pipe is for conveying frozen oil discharged from the oil outlet hole to a circulation hole of the main bearing, so that the frozen oil flows from the circulation hole to the compression under the action of gravity The bottom of the pump body.

In the foregoing compressor pump body, optionally, the hole wall of the sleeve hole is provided with an annular oil storage groove, and a center line of the oil reservoir groove coincides with a center line of the sleeve hole; The oil outlet hole penetrates through the oil reservoir to the sleeve hole.

In the foregoing compressor pump body, optionally, the main bearing includes a base body and a bearing column extending axially from one end of the base body, the sleeve hole penetrating the base body and the bearing column; An oil outlet hole penetrates from the outer surface of the bearing column to the sleeve hole;

Wherein the oil delivery structure further comprises a sleeve, the sleeve is sleeved on the bearing column of the main bearing; the sleeve is provided with an oil hole; the oil passage is opposite to the oil outlet To connect the two;

The one end of the oil delivery pipe is connected to the oil passage hole.

In the foregoing compressor pump body, optionally, the sleeve includes an end cap portion, and a sleeve portion extending to one side based on the end cap portion;

The end cover portion is provided with a through hole through which the crankshaft passes, and the oil passage hole is disposed on the sleeve portion;

The sleeve covers the top end of the bearing post through the end cover portion, and is sleeved on the bearing post through the sleeve portion.

In the foregoing compressor pump body, optionally, the number of the oil delivery pipes is at least two;

The oil passage hole and the oil outlet hole are equal to each other and have one-to-one correspondence with the number of the oil delivery pipes.

In another aspect, an embodiment of the present invention provides a compressor comprising the compressor pump body of any of the above.

In another aspect, an embodiment of the present invention provides a compressor air conditioner comprising the compressor pump body of any of the above.

With the above technical solution, the compressor pump body, the compressor and the air conditioner of the invention have at least the following beneficial effects:

Compared with the prior art, the frozen oil is directly discharged from the oil drain hole, and the frozen oil is returned to the bottom of the compressor pump body through the gap between the components. In the technical solution provided by the present invention, the oil is set through the oil supply. The structure can transport the frozen oil discharged from the oil drain hole of the crankshaft to the bottom of the compressor pump body along the flow path separated from the gaseous refrigerant, and the refrigerant structure can separate the refrigerant oil from the gaseous refrigerant, thereby reducing the refrigerant pair The influence of the flow of the refrigerating oil, for example, can reduce the flow resistance of the refrigerant to the refrigerating oil and the dissolution of the refrigerant to the refrigerating oil, thereby improving the oil return rate of the refrigerating oil.

Further, since the compressor and the air conditioner provided by the present invention are provided with the above-described compressor pump body, there is also an advantage that the oil return rate of the refrigerating oil is high.

The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood and can be implemented in accordance with the contents of the specification. Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

DRAWINGS

1 is a schematic structural view of a compressor pump body according to an embodiment of the present invention;

Figure 2 is a partial structural view of the compressor body of Figure 1;

3 is a diagram showing the relative positional relationship between the oil transfer structure of the compressor pump body and the main bearing according to an embodiment of the present invention;

4 is a schematic structural view of a compressor according to an embodiment of the present invention.

Reference numerals: 1, crankshaft; 11, oil drain hole; 100, compressor pump body; 101, crankshaft center oil passage; 102, oil guide hole; 2, oil transfer structure; 21, oil pipeline; 22, bushing; , end cap portion; 222, sleeve portion; 2221, oil hole; 2211, through hole; 3, main bearing; 31, sleeve hole; 32, flow hole; 301, base; 302, bearing column; Oil tank; 3021, oil hole; 4, cylinder; 5, roller; 6, auxiliary bearing; 7, oil guide.

Detailed ways

In order to further explain the technical means and functions of the present invention for achieving the intended purpose of the present invention, the specific embodiments, structures, features and functions according to the present application will be described in detail below with reference to the accompanying drawings and preferred embodiments. . In the following description, different "an embodiment" or "an embodiment" does not necessarily mean the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments can be combined in any suitable form.

As shown in FIG. 1 and FIG. 2, a compressor pump body 100 according to an embodiment of the present invention includes a crankshaft 1 and an oil delivery structure 2. An oil drain hole 11 is provided in the crankshaft 1. When the compressor pump body 100 operates at a high frequency, the oil drain hole 11 can discharge excess refrigeration oil in the crankshaft 1. The oil delivery structure 2 is for conveying the refrigerant oil discharged from the oil discharge hole 11 to the bottom of the compressor pump body 100 along a flow path separated from the gaseous refrigerant.

Compared with the prior art, the refrigerating oil is directly discharged from the oil discharge hole 11, so that the refrigerating oil is returned to the bottom of the compressor pump body 100 through the gap between the respective components, and the refrigerant flowing downward is subjected to the upward moving refrigerant. The resistance makes the recirculation rate of the compressor refrigeration oil slow. In the technical solution provided by the present invention, the refrigerant oil discharged from the oil drain hole 11 of the crankshaft 1 can be transported to the bottom of the compressor pump body 100 along the flow path separated from the gaseous refrigerant by the oil delivery structure 2 provided. Since the oil transfer structure 2 separates the refrigerant oil from the gaseous refrigerant, the influence of the refrigerant on the flow of the refrigerating oil can be reduced, for example, the flow resistance of the refrigerant to the refrigerating oil and the dissolution of the refrigerant to the refrigerating oil can be reduced, thereby improving the freezing. The oil return rate of the oil.

In addition, due to the transfer of the oil transfer structure 2, the dissolution of the refrigerating oil returning process and the upward flowing refrigerant are avoided, the oil content of the refrigerating oil in the refrigerant is effectively reduced, and the circulation rate of the refrigerating oil is improved, and the compressor is ensured. The refrigeration oil at the bottom of the pump body 100 is sufficient to ensure sufficient lubrication of the compressor components, reduce the power consumption of the compressor, and improve the reliability of the compressor.

Further, as shown in FIG. 2, the foregoing oil delivery structure 2 may include an oil delivery pipe 21 through which the refrigeration oil discharged from the oil discharge hole 11 is transported to the compression along a flow path separated from the gaseous refrigerant. The bottom of the pump body 100.

As shown in FIGS. 1 to 3, the compressor pump body 100 of the present invention further includes a main bearing 3. The main bearing 3 is provided with a sleeve hole 31 for being sleeved on the crankshaft 1 through the sleeve hole 31. The main bearing 3 is further provided with an oil outlet hole 3021, and the oil outlet hole 3021 penetrates from the outer surface of the main bearing 3 to the sleeve hole 31. Wherein, the oil drain hole 11 of the crankshaft 1 is located in the sleeve hole 31, and is opposite to the oil outlet hole 3021 when the crankshaft 1 is rotated to the set position, so that the oil discharge hole 11 and the outlet when the crankshaft 1 is rotated to the set position The oil holes 3021 are in communication. One end of the oil delivery pipe 21 is connected to the oil outlet hole 3021, and the other end is used to convey the refrigerant oil discharged from the oil discharge hole 3021 to the bottom of the compressor pump body 100 along a flow path separated from the gaseous refrigerant. In the present example, during the rotation of the crankshaft 1, the oil drain hole 11 on the crankshaft 1 intermittently communicates with the oil outlet hole 3021 on the main bearing 3 to discharge the frozen oil to the oil discharge hole 3021, and then conveyed through the oil delivery pipe 21. To the bottom of the compressor pump body 100. It should be noted here that the above-mentioned "set position" refers to a position at which the oil discharge hole 11 and the oil discharge hole 3021 of the crankshaft 1 are opposed to each other during the rotation.

In a specific application example, as shown in FIG. 2, the compressor pump body 100 of the present invention is vertically arranged. The other end of the oil feed pipe 21 is for conveying the refrigerant oil discharged from the oil discharge hole 3021 to the flow hole 32 of the main bearing 3, so that the refrigerant oil flows from the flow hole 32 to the bottom of the compressor pump body 100 by gravity. . Wherein, the structure in the present example can separate the upward flowing refrigerant from the downward flowing refrigerant oil on the one hand to prevent the flow of the refrigerant from interfering with the flow of the freezing oil; on the other hand, the main bearing 3 itself can be effectively utilized. The structure carries out the transfer of the frozen oil, thereby reducing the cost of the oil transfer structure 2.

Further, as shown in FIG. 3, the hole wall of the sleeve hole 31 is provided with an annular oil reservoir 311. The center line of the oil reservoir 311 coincides with the center line of the sleeve hole 31. The oil outlet hole 3021 described above penetrates through the oil reservoir 311 to the sleeve hole 31. In the present example, during the rotation of the crankshaft 1, the oil drain hole 11 on the crankshaft 1 is kept in communication with the oil outlet hole 3021 on the main bearing 3 through the annular oil reservoir 311, so that the oil drain hole 11 can be improved. The oil discharge efficiency further increases the oil return rate of the compressor pump body 100 of the present invention.

As shown in FIG. 3, the aforementioned main bearing 3 further includes a base 301 and a bearing post 302 extending axially from one end of the base 301. The aforementioned sleeve hole 31 penetrates the base body 301 and the bearing post 302. The oil outlet hole 3021 described above penetrates from the outer surface of the bearing post 302 to the sleeve hole 31. Wherein, the oil delivery structure 2 of the present invention further includes a sleeve 22 which is sleeved on the bearing column 302 of the main bearing 3. An oil hole 2221 is provided on the sleeve 22. The oil hole 2221 is opposed to the oil outlet hole 3021 of the main bearing 3 to connect the two. The one end of the oil delivery pipe 21 is connected to the oil hole 2221. In the present example, the refrigerating oil is discharged from the oil discharge hole 11 of the crankshaft 1 to the oil discharge hole 3021 of the main bearing 3, and then flows through the oil discharge hole 3021 of the main bearing 3 to the oil passage hole 2221 of the boss 22, and then passes through the oil. The hole 2221 flows into the oil delivery pipe 21 and is finally sent to the bottom of the compressor pump body 100 via the oil delivery pipe 21.

In the above example, the technical effect of facilitating the installation of the oil delivery pipe 21 is provided by the sleeve 22 provided. It should be noted here that the above-mentioned bushing 22 can be interference-fitted with the bearing post 302 of the main bearing 3 so that the bushing 22 and the main bearing 3 are relatively fixed.

Further, as shown in FIGS. 2 and 3, the above-described bushing 22 may include an end cap portion 221 and a sleeve portion 222 extending to one side based on the end cap portion 221. The end cover portion 221 is provided with a through hole 2211 through which the crankshaft 1 passes, and the aforementioned oil passage hole 2221 is provided on the sleeve portion 222. The sleeve 22 is capped to the top end of the bearing post 302 by the end cap portion 221 and is sleeved on the bearing post 302 by the sleeve portion 222. In the present example, since the sleeve 22 has the end cap portion 221, the mounting of the sleeve 22 is facilitated. Specifically, when the sleeve 22 is closed to the top end of the bearing post 302 through the end cover portion 221, the oil passage hole 2221 on the sleeve portion 222 can be just opposite to the oil outlet hole 3021 on the main bearing 3, so that two Keep in touch.

In a specific application example, as shown in FIG. 3, the foregoing number of the oil delivery pipe 21, the oil hole 2221, and the oil outlet hole 3021 are equal, and are at least two, and the three are one-to-one correspondence, thereby improving The oil return rate of the compressor pump body 100 of the present invention.

Further, as shown in FIG. 3, the foregoing oil delivery pipe 21, oil passage hole 2221, and oil outlet hole 3021 may be uniformly distributed in a circular shape around the center line of the crankshaft 1.

As shown in FIG. 4, an embodiment of the present invention also provides a compressor including the compressor pump body 100 of any of the above embodiments. Since the compressor provided by the present invention has the above-described compressor pump body 100, it also has an advantage that the oil return rate of the refrigerating oil is high.

Preferably, the compressor described above is a rotary compressor.

An embodiment of the present invention also provides a compressor air conditioner comprising the compressor pump body 100 of any of the above embodiments. Since the air conditioner provided by the present invention has the above-described compressor pump body 100, it also has an advantage that the oil return rate of the refrigerating oil is high.

The working principle and preferred embodiment of the present invention are described below.

The technical problem solved by the technical solution of the present invention is as follows: 1. Solving the technical problem that the high-frequency operation of the rotary compressor has a high fuel injection rate and the oil return rate is slow; 2. The power consumption of the compressor is increased, and the reliability is lowered. technical problem.

The compressor of the present invention, preferably a rotary compressor, is designed with an oil delivery structure 2, which may also be referred to as an oil circulator. As shown in FIG. 1 to FIG. 3, the oil circulator is composed of a sleeve 22 and an oil delivery pipe 21, wherein the sleeve 22 functions as an interference fit with the main bearing 3, and the oil delivery pipe 21 functions to connect the oil outlet 3021 of the main bearing 3. The refrigerant oil discharged from the oil drain hole 11 of the crankshaft 1 is directly introduced into the bottom of the pump body. As shown in FIG. 3, the main bearing 3 is provided with an oil storage tank 311 and an oil outlet hole 3021. The oil storage tank 311 functions to accommodate the refrigeration oil discharged from the crank oil drain hole 11, and the oil outlet hole 3021 is connected to the oil delivery pipe 21 of the oil circulator. . As shown in FIG. 2, the oil circulator is fastened to the main bearing 3, and the horizontal axis of the oil delivery pipe 21 is aligned with the axis of the oil outlet hole 3021 of the main bearing 3; and the oil reservoir 311 of the main bearing 3 and the row of the crankshaft 1 are simultaneously arranged. The height of the oil hole 11 is designed such that the refrigerating oil can flow into the oil reservoir 311 of the main bearing 3 through the oil drain hole 11 of the crankshaft 1, and then enter the oil pipe 21 of the oil circulator through the oil outlet hole 3021 of the main bearing 3, and finally pass through. The oil delivery pipe 21 delivers the frozen oil to the bottom of the compressor pump body 100, so there are two main refrigeration oil circulation paths inside the compressor, as shown in FIG. 2, one of which is: the bottom of the pump body - the crankshaft center oil passage 101 - the crankshaft 1 Oil guide hole 102 - pump body part clearance (lubrication) - pump body bottom; the other is: pump body bottom - crankshaft center oil path 101 - crankshaft 1 oil drain hole 11 - main bearing 3 oil reservoir 311 - main bearing The oil outlet 3021 of the oil circulation pipe 21 - the bottom of the pump body, wherein the other circulation path reduces the reflux resistance of the refrigerant to the refrigeration oil and the dissolution amount of the refrigerant to the refrigeration oil.

As shown in FIGS. 1 and 4, the compressor pump body 100 of the present invention mainly consists of an oil delivery structure 2 (also referred to as an oil circulator), a main bearing 3, a crankshaft 1, a cylinder 4, a roller 5, and a sub-bearing. 6. The oil guiding piece 7 is composed. When the compressor is running at high speed, as shown in FIG. 2, a part of the refrigerating oil is driven by the oil guiding piece 7, passes through the crankshaft center oil passage 101, and passes through the oil guiding hole 102 of the crankshaft 1 as the sub bearing 6, the roller 5 and the main bearing. The 3 parts and the like provide lubrication, and a part of the refrigerating oil passes through the crankshaft center oil passage 101, flows directly through the oil discharge hole 11 of the crankshaft 1, the oil storage groove 311 of the main bearing 3, the oil discharge hole 3021 of the main bearing 3, and the oil circulator oil delivery pipe 21 Returning to the bottom of the compressor pump body 100, the refrigerating oil return process is prevented from coming into contact with the upward flowing refrigerant, which effectively reduces the refrigeration oil content in the refrigerant and increases the refrigeration oil circulation rate.

The oil circulator, the main bearing 3 (the oil storage tank 311, the oil outlet hole 3021), and the crankshaft 1 (the oil drain hole 11) cooperate with each other, thereby effectively reducing the compressor oil discharge rate and improving the recirculation rate of the refrigerating oil, thereby ensuring The refrigeration oil at the bottom of the compressor pump body 100 is sufficient to ensure sufficient lubrication of the compressor components, reduce compressor power consumption, and improve compressor reliability.

According to the above embodiment, the compressor pump body 100, the compressor, and the air conditioner of the present invention have at least the following advantages:

1. Reduce the high-frequency operation oil discharge rate of the compressor and increase the refrigeration oil circulation rate; 2. Reduce the compressor power consumption and improve the reliability of the compressor.

It should be noted here that in the case of no conflict, the technical features in the above examples can be combined with each other according to the actual situation to achieve the corresponding technical effects, specifically for various combinations. One by one.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still in the present invention. Within the scope of the inventive solution.

Claims

A compressor pump body includes a crankshaft (1), and the crankshaft (1) is provided with an oil drain hole (11); wherein the compressor pump body further comprises:

The oil delivery structure (2) for conveying the refrigerant oil discharged from the oil discharge hole (11) to the bottom of the compressor pump body along a flow path spaced apart from the gaseous refrigerant.
A compressor pump body according to claim 1, wherein

The oil delivery structure (2) includes an oil delivery pipe (21) for conveying the refrigeration oil discharged from the oil discharge hole (11) through the oil delivery pipe (21) along a flow path separated from the gaseous refrigerant to the The bottom of the compressor pump body.
A compressor pump body according to claim 2, wherein

The compressor pump body further includes a main bearing (3), the main bearing (3) is provided with a sleeve hole (31), and the main bearing (3) is sleeved through the sleeve hole (31) On the crankshaft (1);

The main bearing (3) is further provided with an oil outlet hole (3021), the oil outlet hole (3021) penetrates from the outer surface of the main bearing (3) to the sleeve hole (31);

Wherein, the oil drain hole (11) of the crankshaft (1) is located in the sleeve hole (31), and is opposite to the oil outlet hole (3021) when the crankshaft (1) is rotated to a set position. One end of the oil delivery pipe (21) is connected to the oil outlet hole (3021), and the other end is used for conveying the refrigerant oil discharged from the oil outlet hole (3021) along a flow path separated from the gaseous refrigerant to The bottom of the compressor pump body.
A compressor pump body according to claim 3, wherein

The compressor pump body is vertically arranged;

The other end of the oil delivery pipe (21) is for conveying the refrigerant oil discharged from the oil outlet hole (3021) to the flow hole (32) of the main bearing (3), so that the frozen oil is in gravity Flow from the flow hole (32) to the bottom of the compressor pump body.
A compressor pump body according to claim 3 or 4, wherein

An annular oil reservoir (311) is disposed on the wall of the sleeve hole (31), and a center line of the oil reservoir (311) coincides with a center line of the sleeve hole (31); The oil hole (3021) penetrates through the oil reservoir (311) to the sleeve hole (31).
A compressor pump body according to any one of claims 3 to 5, wherein

The main bearing (3) includes a base body (301) and a bearing column (302) extending axially from one end of the base body (301), the sleeve hole (31) penetrating the base body (301) and the a bearing column (302); the oil outlet hole (3021) penetrates from the outer surface of the bearing column (302) to the sleeve hole (31);

Wherein, the oil delivery structure (2) further comprises a sleeve (22), the sleeve (22) is sleeved on the bearing column (302) of the main bearing (3); the sleeve (22) An oil hole (2221) is disposed thereon; the oil hole (2221) is opposite to the oil outlet hole (3021) to connect the two;

The one end of the oil delivery pipe (21) is connected to the oil hole (2221).
A compressor pump body according to claim 6, wherein

The sleeve (22) includes an end cap portion (221), and a sleeve portion (222) extending to one side based on the end cap portion (221);

The end cover portion (221) is provided with a through hole (2211) through which the crankshaft (1) passes, and the oil passage hole (2221) is disposed on the sleeve portion (222);

The sleeve (22) is covered by the end cap portion (221) to the top end of the bearing post (302), and is sleeved on the bearing post (302) through the sleeve portion (222) .
A compressor pump body according to claim 6 or 7, wherein

The number of the oil pipelines (21) is at least two;

Both the oil passage hole (2221) and the oil outlet hole (3021) are equal to each other and correspond to the number of the oil delivery pipes (21).
A compressor comprising the compressor pump body according to any one of claims 1 to 8.
An air conditioner comprising the compressor pump body according to any one of claims 1 to 8.