Pump body assembly, compressor and air conditioner

Abstract

The pump body assembly comprises an upper air cylinder and a partition plate, an upper sliding piece groove is formed in the upper air cylinder, the upper sliding piece groove penetrates through the upper air cylinder in the axial direction of the upper air cylinder, the partition plate is assembled on the lower side of the upper air cylinder and comprises a partition plate body and a shielding part, and the shielding part is located on one side of the partition plate body. The partition plate body and the shielding part jointly shield and seal the lower side of the upper sliding piece groove. According to the invention, the baffle plate is additionally provided with the shielding part on the basis of the original baffle plate main body, and then the baffle plate main body and the shielding part are utilized to jointly shield and seal the lower side of the upper sliding sheet groove, so that when the oil level in the compressor is relatively low, backflow lubricating oil enters the upper sliding sheet groove and cannot flow away from the lower side of the upper sliding sheet groove under the action of gravity; and the sufficient lubricating oil ensures the sufficient lubrication of the slip sheet, so that the friction and abrasion between the slip sheet and the wall of the air cylinder can be effectively reduced, and the service life of the slip sheet and the air cylinder is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and in particular relates to a pump assembly, a compressor, and an air conditioner. Background Art

[0002] In air conditioning systems, compressors are key components for compressing and circulating the refrigerant. With the advancement of air conditioning technology, the structural design and performance requirements of compressors are constantly improving. Twin-cylinder rotor compressors are widely used in various air conditioning systems due to their high efficiency and energy-saving features.

[0003] Depending on the number of cylinders, roller compressors are classified as single-cylinder, dual-cylinder, or multi-cylinder. Dual-cylinder rotor compressors typically consist of two cylinders, one upper and one lower, each equipped with a rotor and vanes. During operation, the vanes reciprocate within the vane grooves as the rollers roll eccentrically. The friction between the vanes and the vane grooves directly affects the efficiency and life of the compressor. During operation, if the oil level in the compressor is too low to reach the height of the upper cylinder, the lubricating oil in the vane grooves of the upper cylinder primarily comes from the lubricating oil returning from the upper flange. Under the influence of gravity, the returning lubricating oil flows through the vane grooves of the upper cylinder and continues to flow downward. This results in less oil in the vane grooves of the upper cylinder, thereby increasing the friction between the vanes and the cylinder wall. Summary of the Invention

[0004] Therefore, the present invention provides a pump body assembly that can solve the technical problem that during the operation of the compressor, if the oil level in the compressor is low and not enough to reach the height of the upper cylinder, the reflux lubricating oil flows through the vane groove of the upper cylinder under the influence of gravity and continues to flow downward, thereby resulting in less oil in the vane groove of the upper cylinder and increasing the friction between the vane and the cylinder wall.

[0005] In order to solve the above problems, the present invention provides a pump body assembly, including an upper cylinder and a partition, the upper cylinder is constructed with an upper slide groove, the upper slide groove passes through the upper cylinder along the axial direction of the upper cylinder, the partition is assembled on the lower side of the upper cylinder, the partition includes a partition body and a shielding portion, the shielding portion is located on one side of the partition body, the partition body and the shielding portion jointly shield and close the lower side of the upper slide groove.

[0006] In some embodiments, the upper cylinder includes a cylinder body and a cylinder handle, the cylinder handle is located on one side of the cylinder body, a lower boss is formed on the lower side of the cylinder handle, the lower boss extends at least to the junction of the cylinder handle and the cylinder body, the lower side of the lower boss is flush with the lower side of the cylinder body, the lower side of the upper slide groove is simultaneously in the area of ​​the lower boss and the cylinder body, the partition body is in close contact with the cylinder body, and the shielding portion is in close contact with the lower boss.

[0007] In some embodiments, the upper cylinder includes a cylinder handle, and an oil outlet hole is configured on the cylinder handle, one end of the oil outlet hole leads to the upper slide groove, and the other end of the oil outlet hole leads to the outside of the cylinder handle.

[0008] In some embodiments, the oil outlet hole extends in a radial direction of the upper cylinder, and the oil outlet hole has a center line, and the height of the center line is located at more than half of the height of the cylinder handle.

[0009] In some embodiments, the upper cylinder and the partition are both installed in the housing of the compressor, and the distance between the cylinder handle and the housing is S, where S≤1 mm.

[0010] In some embodiments, an oil inlet hole and an oil guide groove are configured on the upper cylinder. The oil guide groove is configured on the groove wall of the upper sliding vane groove. The oil inlet hole is connected to the upper sliding vane groove through the oil guide groove.

[0011] In some embodiments, an upper flange is assembled on the upper side of the upper cylinder, and the upper flange includes a flange body. An oil hole is constructed on the flange body, and the oil hole passes through the flange body along the axial direction of the flange body. The oil hole is connected to the oil inlet hole.

[0012] In some embodiments, a stator core is provided above the upper flange, and an oil return channel is constructed on the stator core. The oil return channel penetrates the stator core along the height direction of the stator core, and the oil return channel is opposite to the oil hole.

[0013] In some embodiments, the upper cylinder includes a cylinder body and a cylinder handle, the cylinder handle is located on one side of the cylinder body, an upper boss is formed on the upper side of the cylinder handle, the upper boss extends at least to the junction of the cylinder handle and the cylinder body, the upper side of the upper boss is flush with the upper side of the cylinder body, the upper side of the upper slide groove is simultaneously in the area of ​​the upper boss and the cylinder body, the upper side of the upper cylinder is assembled with an upper flange, and the upper flange is tightly attached to the cylinder body and the upper boss at the same time.

[0014] The present invention also provides a compressor comprising the aforementioned pump body assembly.

[0015] The present invention also provides an air conditioner, comprising the aforementioned compressor.

[0016] The pump assembly, compressor, and air conditioner provided by the present invention have the following beneficial effects:

[0017] By optimizing the partition, a shielding portion is added to the original partition body. The partition body and shielding portion then jointly block and seal the lower side of the upper vane slot. When the oil level in the compressor is low, the return lubricating oil entering the upper vane slot does not flow away from the lower side due to gravity. Instead, it accumulates inside the slot, forming a stable oil film. This ample lubricating oil ensures adequate lubrication of the vanes, effectively reducing friction and wear between the vanes and the cylinder wall, thereby extending the service life of the vanes and cylinder, and improving the overall reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0019] Figure 1 This is a schematic structural diagram of the upper cylinder and the partition plate of the pump assembly of an embodiment of the present invention being assembled together;

[0020] Figure 2 This is a schematic structural diagram of a partition plate of a pump assembly according to an embodiment of the present invention;

[0021] Figure 3 A top view of an upper cylinder of a pump assembly according to an embodiment of the present invention;

[0022] Figure 4 A top view of a pump assembly according to an embodiment of the present invention;

[0023] Figure 5 is a cross-sectional view of a compressor according to an embodiment of the present invention;

[0024] Figure 6 2 is a top view of a compressor according to an embodiment of the present invention.

[0025] The reference numerals indicate:

[0026] 1. Upper cylinder; 11. Cylinder body; 12. Cylinder handle; 13. Lower boss; 14. Upper boss; 2. Partition; 21. Partition body; 22. Shielding part; 3. Upper slide groove; 4. Oil outlet hole; 5. Housing; 6. Oil inlet hole; 7. Oil guide groove; 8. Upper flange; 9. Oil hole; 10. Oil return channel; 15. Lower cylinder; 16. Lower flange. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0030] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0031] See also Figures 1 to 6As shown, according to an embodiment of the present invention, a pump body assembly is provided, including an upper cylinder 1 and a partition 2. An upper slide groove 3 is constructed on the upper cylinder 1, and the upper slide groove 3 passes through the upper cylinder 1 along the axial direction of the upper cylinder 1. The partition 2 is assembled on the lower side of the upper cylinder 1. The partition 2 includes a partition body 21 and a shielding portion 22. The shielding portion 22 is located on one side of the partition body 21. The partition body 21 and the shielding portion 22 jointly shield and close the lower side of the upper slide groove 3.

[0032] In this technical solution, the partition 2 is optimized so that a shielding portion 22 is added to the partition 2 on the basis of the original partition body 21, and then the partition body 21 and the shielding portion 22 are used to jointly shield and close the lower side of the upper vane groove 3. When the oil level in the compressor is low, the refluxed lubricating oil entering the upper vane groove 3 will not flow away from its lower side under the action of gravity, but will accumulate in the upper vane groove 3, and then form a stable oil film in the upper vane groove 3. Adequate lubricating oil ensures full lubrication of the vane, which can effectively reduce the friction and wear between the vane and the cylinder wall, thereby extending the service life of the vane and the cylinder, and improving the overall reliability of the compressor. Furthermore, the improvement of lubrication in the upper vane groove 3 can also reduce the friction resistance during the operation of the compressor, thereby improving compression efficiency, reducing operating noise, and improving the user experience.

[0033] See also Figure 1 As shown, the upper cylinder 1 includes a cylinder body 11 and a cylinder handle 12. The cylinder handle 12 is located on one side of the cylinder body 11. A lower boss 13 is formed on the lower side of the cylinder handle 12. The lower boss 13 extends at least to the junction of the cylinder handle 12 and the cylinder body 11. The lower side of the lower boss 13 is flush with the lower side of the cylinder body 11. The lower side of the upper slide groove 3 is simultaneously in the area of ​​the lower boss 13 and the cylinder body 11. The partition body 21 is in close contact with the cylinder body 11, and the shielding portion 22 is in close contact with the lower boss 13.

[0034] In the prior art, the thickness of the cylinder shank 12 is usually smaller than that of the cylinder body 11. This allows lubricating oil to flow from the lower side of the upper vane groove 3 into the upper vane groove 3 when the oil level in the compressor's bottom oil sump is high. However, when the oil level in the compressor's bottom oil sump is low, lubricating oil entering from the upper side of the upper vane groove 3 will flow out from the lower side of the upper vane groove 3 under the action of gravity. By providing a lower boss 13 on the lower side of the cylinder handle 12, the lower boss 13 extends at least to the junction of the cylinder handle 12 and the cylinder body 11, and the lower side of the lower boss 13 is flush with the lower side of the cylinder body 11, and the lower side of the upper vane groove 3 is simultaneously in the area of ​​the lower boss 13 and the cylinder body 11, then when the partition body 21 is in close contact with the cylinder body 11 and the shielding portion 22 is in close contact with the lower boss 13, the partition body 21 and the shielding portion 22 can jointly block and close the lower side of the upper vane groove 3, ensuring that the lubricating oil does not flow away from the gap between the cylinder handle 12 and the shielding portion 22. It is understandable that in addition to designing the lower boss 13 on the lower side of the cylinder handle 12 to achieve the shielding and sealing of the lower side of the upper vane groove 3 by the partition 2, the shielding portion 22 can also be thickened to achieve the shielding and sealing of the lower side of the upper vane groove 3 by the partition 2.

[0035] See also Figure 1 and Figure 5 As shown, an oil outlet hole 4 is constructed on the cylinder handle 12 , one end of the oil outlet hole 4 leads to the upper sliding vane groove 3 , and the other end of the oil outlet hole 4 leads to the outside of the cylinder handle 12 .

[0036] In this technical solution, the provision of the oil outlet hole 4 allows the lubricating oil entering the upper vane groove 3 to flow out of the upper vane groove 3 to the oil pool at the bottom of the compressor, thereby ensuring the fluidity of the lubricating oil within the upper vane groove 3 and providing better lubrication and cooling effects on the vanes. The oil outlet hole 4 can be a spring hole originally constructed in the cylinder handle 12 (a spring is installed in the spring hole to cooperate with the vane), thus eliminating the need for a separate oil hole for oil outlet.

[0037] See also Figure 1 and Figure 5 As shown, the oil outlet hole 4 extends radially along the upper cylinder 1 and has a centerline located at a height greater than half the height of the cylinder shank 12. This ensures that the oil outlet hole 4 is at a sufficient height from the underside of the upper vane slot 3, ensuring that lubricating oil enters the upper vane slot 3 and accumulates therein to a certain level before flowing out of the oil outlet hole 4. This ensures that there is a sufficient amount of lubricating oil in the upper vane slot 3, ensuring lubrication of the vanes.

[0038] As a specific implementation, the upper cylinder 1 and the partition plate 2 are both installed in the shell 5 of the compressor, and the distance between the cylinder handle 12 and the shell 5 is S, where S≤1mm.

[0039] In the embodiment, the spacing between the cylinder handle 12 and the shell 5 is less than or equal to 1mm, which means that the spacing between the outlet of the oil outlet hole 4 and the inner surface of the shell 5 is less than or equal to 1mm, so that the flow rate of the lubricating oil from the oil outlet hole 4 can be limited, that is, the flow rate of the lubricating oil in the upper slide groove 3 can be limited, so that the upper slide groove 3 always has sufficient lubricating oil, and the lubrication of the slide is ensured.

[0040] Referring to Figures 3 to 5 As shown in the figure, the upper cylinder 1 is provided with an oil inlet hole 6 and an oil guide groove 7, and the oil guide groove 7 is formed on the groove wall of the upper slide groove 3, and the oil inlet hole 6 communicates with the upper slide groove 3 through the oil guide groove 7.

[0041] In the technical scheme, when the slide is in the upper slide groove 3, the amount of oil that the upper slide groove 3 can hold is limited, and the oil guide groove 7 formed on the groove wall of the upper slide groove 3 is equivalent to widening the upper slide groove 3, so that the amount of lubricating oil in the upper slide groove 3 can be increased. Specifically, the lubricating oil enters from the oil inlet hole 6, then flows into the oil guide groove 7, and finally flows into the upper slide groove 3 from the oil guide groove 7. Preferably, the number of oil guide grooves 7 is two, and the two oil guide grooves 7 are respectively formed on the two opposite groove walls of the upper slide groove 3, and the oil inlet hole 6 extends along the axial direction of the upper cylinder 1.

[0042] Referring to Figure 4 and Figure 5 As shown in the figure, the upper side of the upper cylinder 1 is assembled with an upper flange 8, and the upper flange 8 includes a flange body and a shaft neck, and the flange body is provided with an oil passing hole 9, and the oil passing hole 9 penetrates the flange body along the axial direction of the flange body, and the oil passing hole 9 communicates with the oil inlet hole 6.

[0043] In the embodiment, by forming the oil passing hole 9 on the flange body and making the oil passing hole 9 communicate with the oil inlet hole 6, the lubricating oil collected on the flange body will flow into the upper slide groove 3 of the upper cylinder 1 through the oil passing hole 9, so that the lubricating oil always flows into the upper slide groove 3 from above. It needs to be explained that a plurality of waist-shaped holes will be usually formed on the upper flange 8, and one of the waist-shaped holes can be used as the oil passing hole 9 to communicate with the oil inlet hole 6, so that it is not necessary to additionally form an oil hole on the flange body.

[0044] Referring to Figure 5 and Figure 6 As shown in the figure, the upper side of the upper flange 8 is provided with a stator core, and the stator core is provided with an oil return channel 10, and the oil return channel 10 penetrates the stator core along the height direction of the stator core, and the oil return channel 10 is opposite to the oil passing hole 9.

[0045] In this technical solution, by making the return oil channel 10 on the stator core face the oil hole 9 on the upper flange 8, the lubricating oil collected in the upper cavity of the motor will drip directly into the oil hole 9 through the return oil channel 10, so that the lubricating oil collected in the upper cavity of the motor can quickly flow into the upper vane groove 3. Among them, the return oil channel 10 can be formed by stator trimming of the stator core. Specifically, when the compressor is running, the lubricating oil in the bottom oil pool enters the pump body along the central oil hole of the crankshaft and is discharged to the lower cavity of the motor through the upper exhaust and the upper flange oil groove. The lubricating oil enters the upper cavity of the motor along the rotor circulation hole, and then the lubricating oil flows back to the lower cavity of the motor along the return oil channel 10, and flows into the upper vane groove 3 through the oil hole 9 of the upper flange 8, and finally flows back to the bottom oil pool.

[0046] See also Figure 1 As shown, an upper boss 14 is formed on the upper side of the cylinder handle 12, and the upper boss 14 extends at least to the junction of the cylinder handle 12 and the cylinder body 11. The upper side of the upper boss 14 is flush with the upper side of the cylinder body 11, and the upper side of the upper slide groove 3 is in the area of ​​the upper boss 14 and the cylinder body 11 at the same time. The upper side of the upper cylinder 1 is assembled with an upper flange 8, and the upper flange 8 is tightly attached to the cylinder body 11 and the upper boss 14 at the same time.

[0047] In the prior art, the thickness of the cylinder handle 12 is usually smaller than the thickness of the cylinder body 11, so there is a gap between the cylinder handle 12 and the upper flange 8. In this way, when the oil level in the bottom oil pool of the compressor is high, the lubricating oil can easily enter the upper slide groove 3 from the gap between the cylinder handle 12 and the upper flange 8. The solution of the present application requires that the lubricating oil flow in from above the upper vane groove 3, and the lubricating oil cannot flow away from between the cylinder handle 12 and the upper flange 8 in advance. Therefore, an upper boss 14 is provided on the upper side of the cylinder handle 12, and the upper boss 14 extends at least to the junction of the cylinder handle 12 and the cylinder body 11, and the upper side of the upper boss 14 is flush with the upper side of the cylinder body 11. The upper side of the upper vane groove 3 is simultaneously in the area of ​​the upper boss 14 and the cylinder body 11. When the upper flange 8 is in close contact with the cylinder body 11 and the upper boss 14 at the same time, the upper flange 8 can block and close the upper side of the upper vane groove 3, thereby ensuring that the lubricating oil will not flow away from between the cylinder handle 12 and the upper flange 8 in advance. Among them, the upper boss 14 and the lower boss 13 are symmetrical above and below the cylinder handle 12. It can be understood that in addition to designing an upper boss 14 on the upper side of the cylinder handle 12 to achieve the shielding and sealing of the upper side of the upper slide groove 3 by the upper flange 8, the upper flange 8 can also be partially thickened to achieve the shielding and sealing of the upper side of the upper slide groove 3 by the upper flange 8.

[0048] It should be noted that, in the present application, only a simple modification of the upper cylinder 1 and the partition 2 can be made to achieve a sufficient amount of lubricating oil in the upper vane groove 3 to ensure the lubrication of the vane, thereby realizing a low oil level design of the compressor and reducing the amount of lubricating oil filled in the compressor. Especially in the development of the R290 compressor, reducing the amount of oil injection can further reduce the amount of refrigerant injection.

[0049] It should also be noted that in the prior art, the lubrication conditions of the vanes of the upper cylinder are usually improved by increasing the amount of lubricating oil in the compressor or optimizing the oil circuit design. However, these methods often have the following problems: First, increasing the amount of lubricating oil will increase the energy consumption of the compressor and may affect the efficiency of the compressor; second, optimizing the oil circuit design requires adding additional structures, which may lead to an increase in the size of the compressor or an increase in cost. In addition, there are some lubrication improvement schemes in the prior art, such as setting an oil return groove in the vane groove of the upper cylinder. Although it can improve the lubrication conditions to a certain extent, the actual effect is limited, especially when the oil level is low, it is still difficult to ensure sufficient lubrication of the vanes of the upper cylinder. The solution of the present application can effectively improve the lubrication conditions of the vanes of the upper cylinder without increasing the complexity and cost of the compressor.

[0050] The present invention also provides a compressor comprising the aforementioned pump assembly. The technical solution of this application is applicable to both twin-cylinder and multi-cylinder compressors. In both cases, the lubricating oil in the vane grooves of each cylinder below the upper cylinder 1 is supplied from a bottom oil reservoir whose oil level is higher than that of each cylinder. For twin-cylinder compressors, a partition 2 is assembled between the upper cylinder 1 and the lower cylinder 15, with a lower flange 16 assembled to the underside of the lower cylinder 15.

[0051] The present invention also provides an air conditioner, comprising the aforementioned compressor.

[0052] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A pump assembly, characterized in that: The utility model comprises an upper cylinder (1) and a partition (2), wherein an upper slide groove (3) is constructed on the upper cylinder (1), and the upper slide groove (3) penetrates the upper cylinder (1) along the axial direction of the upper cylinder (1), and the partition (2) is assembled on the lower side of the upper cylinder (1), and the partition (2) comprises a partition body (21) and a shielding portion (22), and the shielding portion (22) is located on one side of the partition body (21), and the partition body (21) and the shielding portion (22) jointly shield and close the lower side of the upper slide groove (3).

2. The pump assembly according to claim 1, characterized in that The upper cylinder (1) includes a cylinder body (11) and a cylinder handle (12), wherein the cylinder handle (12) is located on one side of the cylinder body (11), and a lower boss (13) is formed on the lower side of the cylinder handle (12), wherein the lower boss (13) extends at least to the junction of the cylinder handle (12) and the cylinder body (11), and the lower side of the lower boss (13) is flush with the lower side of the cylinder body (11), and the lower side of the upper slide groove (3) is simultaneously located in the region of the lower boss (13) and the cylinder body (11), the partition body (21) is in close contact with the cylinder body (11), and the shielding portion (22) is in close contact with the lower boss (13).

3. The pump assembly according to claim 1, characterized in that The upper cylinder (1) comprises a cylinder handle (12), and an oil outlet hole (4) is constructed on the cylinder handle (12). One end of the oil outlet hole (4) leads to the upper slide groove (3), and the other end of the oil outlet hole (4) leads to the outside of the cylinder handle (12).

4. The pump assembly according to claim 3, characterized in that The oil outlet hole (4) extends radially along the upper cylinder (1), and the oil outlet hole (4) has a center line, and the height of the center line is located at more than half the height of the cylinder handle (12).

5. The pump assembly according to claim 3 or 4, characterized in that: The upper cylinder (1) and the partition (2) are both installed in the shell (5) of the compressor, and the distance between the cylinder handle (12) and the shell (5) is S, and S is less than or equal to 1 mm.

6. The pump assembly according to claim 1, characterized in that The upper cylinder (1) is provided with an oil inlet hole (6) and an oil guide groove (7), the oil guide groove (7) being constructed on the groove wall of the upper slide groove (3), and the oil inlet hole (6) being communicated with the upper slide groove (3) through the oil guide groove (7).

7. The pump assembly according to claim 6, characterized in that An upper flange (8) is assembled on the upper side of the upper cylinder (1), and the upper flange (8) includes a flange body. An oil hole (9) is constructed on the flange body, and the oil hole (9) penetrates the flange body along the axial direction of the flange body. The oil hole (9) is connected to the oil inlet hole (6).

8. The pump assembly according to claim 7, characterized in that A stator core is arranged above the upper flange (8), and an oil return channel (10) is constructed on the stator core. The oil return channel (10) penetrates the stator core along the height direction of the stator core, and the oil return channel (10) is opposite to the oil hole (9).

9. The pump assembly according to claim 1, wherein: The upper cylinder (1) includes a cylinder body (11) and a cylinder handle (12), wherein the cylinder handle (12) is located on one side of the cylinder body (11), and an upper boss (14) is formed on the upper side of the cylinder handle (12), and the upper boss (14) extends at least to the junction of the cylinder handle (12) and the cylinder body (11), and the upper side of the upper boss (14) is flush with the upper side of the cylinder body (11), and the upper side of the upper slide groove (3) is simultaneously located in the area of ​​the upper boss (14) and the cylinder body (11), and an upper flange (8) is assembled on the upper side of the upper cylinder (1), and the upper flange (8) is simultaneously in close contact with the cylinder body (11) and the upper boss (14).

10. A compressor, characterized by comprising the pump body assembly according to any one of claims 1 to 9.

11. An air conditioner, comprising the compressor according to claim 10.

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