Pump body assembly, vertical compressor and air conditioner

Abstract

The pump body assembly is applied to a vertical compressor of a refrigerating system and comprises a first pump body and an upper flange making contact with the upper end face of the pump body, the first pump body is provided with a first sliding piece groove and an upper air cylinder, and a first spring hole is formed in the end, on the radial outer side of the first pump body, of the first sliding piece groove; a second oil way extending in the radial direction of the first pump body is arranged at the upper end of the first sliding piece groove, one end of the second oil way communicates with the first spring hole, a gap is formed between the other end of the second oil way and the upper air cylinder, and a first oil way is arranged between the second oil way and the upper end face of the upper flange. And a refrigerant outlet hole is formed between the upper cylinder and the upper end surface of the upper flange, so that the injection amount of lubricating oil in the vertical compressor can be reduced while the lubrication of a slip sheet groove of a pump body is ensured.

Description

Technical Field

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

[0002] Hydrocarbon refrigerants have attracted much attention in the industry due to their green and low-carbon advantages. However, when hydrocarbon refrigerants are used in air-conditioning systems, the refrigerant charge in air-conditioning systems using hydrocarbon refrigerants must be limited due to their high flammability.

[0003] When the refrigerant is reduced, the amount of lubricating oil injected into the vertical compressor also needs to be reduced accordingly to avoid a decrease in the heat exchange efficiency of the refrigerant due to more lubricating oil dissolving in a unit volume of refrigerant. In the prior art, the height of the lubricating oil needs to exceed the upper end surface of the upper flange to meet the lubrication requirements of the vanes in the vane grooves of the pump body.

[0004] How to ensure the lubrication of the vane groove of the pump body while reducing the amount of lubricating oil injected into the vertical compressor is a technical problem that urgently needs to be solved. Summary of the invention

[0005] Therefore, the present invention provides a pump body assembly, a vertical compressor and an air conditioner, which can reduce the injection amount of lubricating oil in the vertical compressor while ensuring the lubrication of the vane groove of the pump body.

[0006] In the first aspect, the present invention provides a pump body assembly, which is applied to a vertical compressor of a refrigeration system, including a first pump body and an upper flange in contact with the upper end surface of the pump body, the first pump body is provided with a first vane groove and an upper cylinder, the first vane groove is provided with a first spring hole at one end radially outside the first pump body; the upper end of the first vane groove is provided with a second oil circuit extending along the radial direction of the first pump body, one end of the second oil circuit is connected to the first spring hole, and the other end is spaced from the upper cylinder, a first oil circuit is provided between the second oil circuit and the upper end surface of the upper flange, and a refrigerant outlet hole is provided between the upper cylinder and the upper end surface of the upper flange.

[0007] In some embodiments, the pump body assembly includes a second pump body, the second pump body is provided with a second spring hole, the second pump body is arranged below the first pump body, and a partition is arranged between the second pump body and the first pump body; the pump body assembly also includes a rotating shaft, the rotating shaft is provided with a center oil hole, and the center oil hole is connected to the second spring hole through a third oil circuit.

[0008] In some embodiments, the upper flange includes a protrusion facing upward, the protrusion is provided with an axial hole, the inner wall of the axial hole is provided with a first groove and a second groove extending in the up and down directions, the upper end of the first groove is connected with the upper end of the second groove; the lower end of the first groove is connected with the center oil hole, and the lower end of the second groove is connected with the second spring hole; the third oil circuit includes the first groove and the second groove.

[0009] In some embodiments, the upper flange is provided with a first oil hole, the first pump body is provided with a second oil hole, and the partition is provided with a third oil hole; the inlet of the first oil hole is connected to the lower end of the second groove, the outlet of the third oil hole is connected to the second spring hole, and the first oil hole, the second oil hole and the third oil hole are connected end to end.

[0010] In some embodiments, a protrusion is provided on the outer periphery of the partition, and the protrusion is provided between the first spring hole and the second spring hole.

[0011] In some embodiments, a recessed portion is provided on the upper end surface of the upper flange, a valve plate is provided on the bottom surface of the recessed portion, the valve plate covers the refrigerant outlet hole, and the inlet of the first oil circuit is located on the bottom surface of the recessed portion.

[0012] In a second aspect, the present invention provides a vertical compressor, comprising a housing and the pump body assembly.

[0013] In some embodiments, an oil pool is provided at the bottom of the outer shell, the outer peripheral surface of the upper flange is connected to the inner wall surface of the outer shell, a gap is formed between the outer peripheral surface of the first pump body and the inner wall surface of the outer shell, the first spring hole is connected to the gap, and the gap is connected to the oil pool.

[0014] In some embodiments, the second spring hole is in communication with the oil pool.

[0015] In some embodiments, the pump body assembly further includes a lower pump body, and lubricating oil is injected into the oil pool of the vertical compressor. When the vertical compressor is not working, the liquid level of the lubricating oil in the oil pool is not higher than the lower end surface of the lower pump body.

[0016] In a third aspect, the present invention further provides an air conditioner, comprising the vertical compressor.

[0017] The present application sets a first oil circuit on the upper flange and a second oil circuit at the upper end of the first vane groove. The lubricating oil above the upper flange can enter the second oil circuit from the first oil circuit. The lubricating oil also flows downward when flowing in the second oil circuit to lubricate the vane in the first vane groove. The lubricating oil can be temporarily retained in the first spring hole after entering the first spring hole. The sliding of the vane can contact the lubricating oil in the first spring hole to provide a lubricating effect for the vane. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 is a schematic diagram of the appearance of a pump body assembly according to an embodiment of the present invention;

[0020] Figure 2 The embodiment of the present invention has Figure 1 A compressor schematic diagram of a pump assembly in FIG.

[0021] Figure 3 The embodiment of the present invention Figure 2 Axial schematic diagram of

[0022] Figure 4 The embodiment of the present invention is along Figure 3 A cross-sectional view of the pump assembly in the middle BB direction;

[0023] Figure 5 is a partial cross-sectional view of the pump body assembly of an embodiment of the present invention along the position of the first sliding vane groove;

[0024] Figure 6 The embodiment of the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 is a cross-sectional view of an upper flange of an embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of the first pump structure of an embodiment of the present invention;

[0027] Fig. 9 is a schematic diagram of the second pump structure of an embodiment of the present invention;

[0028] Fig.10 is a schematic diagram of the partition structure of an embodiment of the present invention;

[0029] Fig.11 is a cross-sectional view along the third oil hole of an embodiment of the present invention;

[0030] Fig.12 The embodiment of the present invention Figure 2 Enlarged view of center C.

[0031] The accompanying drawings are marked as follows:

[0032] 101. upper flange; 102. lower flange; 1011. shaft hole; 1012. recessed portion; 201. first pump body; 202. second pump body; 2012. first spring hole; 2022. second spring hole; 2011. first slide groove; 2021. second slide groove; 3. partition; 301. first oil circuit; 302. second oil circuit; 303. protrusion; 401. first groove; 402. second groove; 501. first oil hole; 502. second oil hole; 503. third oil hole; 6. interval; 7. rotating shaft; 701. center oil hole. DETAILED DESCRIPTION

[0033] The following will be combined with the 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 described embodiments 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 by no means 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 creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. 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 devices or elements 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 contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] The present invention provides a pump body assembly, a vertical compressor and an air conditioner, which can ensure the lubrication of the vane groove of the pump body and reduce the injection amount of lubricating oil in the vertical compressor.

[0038] See also Figure 1-11 As shown, a pump body assembly provided by the present invention is applied to a vertical compressor of a refrigeration system, comprising a first pump body 201 and an upper flange 101 in contact with the upper end surface of the pump body, the first pump body 201 is provided with a first vane groove 2011 and an upper cylinder, the first vane groove 2011 is provided with a first spring hole 2012 at one end of the radial outer side of the first pump body 201; the upper end of the first vane groove 2011 is provided with a second oil circuit 302 extending along the radial direction of the first pump body 201, one end of the second oil circuit 302 is connected to the first spring hole 2012, and the other end has a gap 6 with the upper cylinder, the first oil circuit 301 is provided between the second oil circuit 302 and the upper end surface of the upper flange 101, and a refrigerant outlet hole is provided between the upper cylinder and the upper end surface of the upper flange 101.

[0039] When the vertical compressor of the refrigeration system is working, the high-pressure refrigerant containing lubricating oil in the cylinder flows upward from the refrigerant outlet, and the lubricating oil and the refrigerant are separated in the space above the upper flange 101 (the upper end surface of the upper flange 101 is generally provided with a separation cover, and the refrigerant containing oil and lubricating oil is separated into oil and gas in the separation cover), and the gaseous refrigerant flows out from the separation cover. Figure 5 and Figure 6 , Figure 8As shown, the separated lubricating oil flows downward under the action of gravity and gathers on the upper end surface of the upper flange 101, and the lubricating oil enters the first oil circuit 301, and then enters the second oil circuit 302. Since the second oil circuit 302 is arranged at the upper end of the vane groove, the lubricating oil flows downward into the first vane groove 2011 to lubricate the vane during the process of flowing along the second oil circuit 302 under the action of gravity, and part of the lubricating oil can flow into the first spring hole 2012 and be stored in the first spring hole 2012. During the sliding process of the vane in the first vane groove 2011, it can contact the lubricating oil in the first spring hole 2012, thereby achieving further lubrication of the vane.

[0040] By lubricating the vanes in the first vane groove 2011 in the above manner, it is not necessary for the liquid level of the oil pool in the vertical compressor to be higher than the first pump body 201, which is beneficial to reducing the storage amount of lubricating oil in the vertical compressor.

[0041] Preferably, Figure 1 Figure 2 and Figure 4 As shown, the pump body assembly includes a second pump body 202, the second pump body 202 is provided with a second spring hole 2022, the second pump body 202 is arranged below the first pump body 201, and a partition 3 is arranged between the second pump body 202 and the first pump body 201; the pump body assembly also includes a rotating shaft 7, the rotating shaft 7 is provided with a center oil hole 701, and the center oil hole 701 is connected to the second spring hole 2022 through a third oil circuit.

[0042] The lower end of the central oil hole 701 of the rotating shaft 7 extends into the oil pool. When the rotating shaft 7 rotates, the lubricating oil in the oil pool enters the central oil hole 701 and enters the second spring hole 2022 through the third oil path. Fig. 9 As shown, the second pump body 202 is provided with a second slide plate groove 2021, and the spring hole is connected to the second slide plate groove 2021. During the sliding process of the second slide plate groove 2021, it can contact the lubricating oil in the second spring hole 2022, thereby achieving lubrication of the slide plate in the second slide plate groove 2021.

[0043] By lubricating the vanes in the second vane grooves 2021 in the above manner, it is not necessary for the liquid level of the oil pool in the vertical compressor to be higher than the second pump body 202, which is beneficial to reducing the storage amount of lubricating oil in the vertical compressor.

[0044] The lubrication of the first vane groove 2011 and the second vane groove 2021 adopts the above-mentioned two independent flow paths, which can avoid the phenomenon that the temperature of the lubricating oil is too high due to a single flow path being too long.

[0045] The first vane groove 2011 is close to the upper end surface of the upper flange 101, and the first oil circuit 301 and the second oil circuit 302 are provided. The lubricating oil can lubricate the vanes in the first vane groove 2011 under the action of gravity, and the structure is relatively simple. The second vane groove 2021 is far from the upper end surface of the upper flange 101. If the lubricating oil only flows to the second vane groove 2021 by gravity, the flow speed of the lubricating oil will be too slow, and the lubrication effect of the second vane groove 2021 will be poor. The vanes in the second vane groove 2021 are lubricated by connecting the central oil hole 701 with the second vane groove 2021, and the pressure generated by the centrifugal force of the lubricating oil in the central oil hole 701 is used, so that the lubricating oil can flow quickly to the second vane groove 2021 under the action of a relatively high pressure, thereby improving the lubrication effect of the second vane groove 2021.

[0046] A lower flange 102 is provided below the second pump body 202 . In the axial direction of the rotating shaft 7 , the lower flange 102 avoids the second spring hole 2022 , so that the lubricating oil entering the second spring hole 2022 can flow downward back to the oil pool.

[0047] Preferably, Figure 4 and Figure 7 As shown, the upper flange 101 includes a protrusion facing upward, the protrusion is provided with an axial hole 1011, the inner wall of the axial hole 1011 is provided with a first groove 401 and a second groove 402 extending in the up and down directions, the upper end of the first groove 401 is connected with the upper end of the second groove 402; the lower end of the first groove 401 is connected with the center oil hole 701, and the lower end of the second groove 402 is connected with the second spring hole 2022; the third oil circuit includes the first groove 401 and the second groove 402.

[0048] The rotating shaft 7 is provided with an oil drain hole, which is connected to the lower end of the first groove 401; the lubricating oil in the central oil hole 701 enters the first groove 401 through the oil drain hole and flows upward, then flows downward to the lower end of the second groove 402, and finally enters the second spring hole 2022. Through the first groove 401 and the second groove 402, the lubricating oil can lubricate the outer cylindrical surface of the rotating shaft 7 when flowing in the first groove 401 and the second groove 402, thereby reducing the friction between the rotating shaft 7 and the inner wall surface of the shaft hole 1011.

[0049] Furthermore, the first groove 401 is a spiral groove to reduce the resistance of the lubricating oil to flow upward.

[0050] Preferably, Figure 4 and Figure 7As shown, the upper flange 101 is provided with a first oil hole 501, the first pump body is provided with a second oil hole 502, and the partition 3 is provided with a third oil hole 503; the inlet of the first oil hole 501 is connected with the lower end of the second groove 402, and the outlet of the third oil hole 503 is connected with the second spring hole 2022, and the first oil hole 501, the second oil hole 502 and the third oil hole 503 are connected end to end.

[0051] By setting the first oil hole 501, the second oil hole 502 and the third oil hole 503, the lubricating oil flowing out of the second groove 402 can flow through the first oil hole 501, the second oil hole 502 and the third oil hole 503 in sequence and then enter the second spring hole 2022, thereby achieving the purpose of lubricating the sliding vane in the second sliding vane groove 2021.

[0052] Preferably, Fig.10 and Fig.11 As shown, a protrusion 303 is provided on the outer periphery of the partition plate 3 , and the protrusion 303 is arranged between the first spring hole 2012 and the second spring hole 2022 .

[0053] The protrusion 303 is arranged between the first spring hole 2012 and the second spring hole 2022, thereby blocking the bottom of the first spring hole 2012. The lubricating oil entering the first spring hole 2012 can be stored in the first spring hole 2012, further improving the lubrication effect of the sliding vane in the first sliding vane groove 2011.

[0054] Preferably, Figure 4 , Figure 6 and Figure 7 As shown, the upper end surface of the upper flange 101 is provided with a recessed portion 1012 , the bottom surface of the recessed portion 1012 is provided with a valve plate, the valve plate covers the refrigerant outlet hole, and the inlet of the first oil circuit 301 is located on the bottom surface of the recessed portion 1012 .

[0055] By setting the recessed portion 1012, the length of the refrigerant outlet hole is reduced, thereby reducing the clearance volume of the upper cylinder. The lubricating oil separated from the oil and gas flows into the recessed portion 1012 under the action of gravity. The inlet of the first oil circuit 301 is set on the bottom surface of the recessed portion 1012, which cleverly utilizes the existing recessed portion 1012 for setting the valve plate, so that the lubricating oil can be collected and enter the first oil circuit 301 as soon as possible, without the need to reprocess the upper end surface of the upper flange 101, thereby improving production efficiency.

[0056] The present invention provides a vertical compressor, such as Figure 2 As shown, it includes a housing and the pump body assembly.

[0057] A vertical compressor refers to a compressor in which, when in normal working condition, the rotating shaft 7 of the pump assembly is in a vertical direction.

[0058] Preferably, Figure 2 and Fig.12 As shown, an oil pool is provided at the bottom of the outer shell, the outer peripheral surface of the upper flange 101 is connected to the inner wall surface of the outer shell, a gap 6 is formed between the outer peripheral surface of the first pump body 201 and the inner wall surface of the outer shell, the first spring hole 2012 is connected to the gap 6, and the gap 6 is connected to the oil pool.

[0059] When there is more lubricating oil in the first spring hole 2012, it can flow into the interval 6, and flow from the interval 6 to the oil pool, so as to realize the reflux of lubricating oil, and avoid the accumulation of too much lubricating oil above the upper flange 101, resulting in insufficient lubricating oil in the oil pool. Lubricating oil has a reflux oil pool and circulates, which is also beneficial to the cooling of the lubricating oil. After the lubricating oil enters the oil pool, the tiny particles in the lubricating oil can be filtered under the action of the filter element, thereby improving the cleanliness of the lubricating oil. Since the lubricating oil above the upper flange 101 can enter the oil pool after passing through the first oil circuit 301, the second oil circuit 302, the first spring hole 2012 and the interval 6, it is unnecessary to specially process a hole on the upper flange 101 for the lubricating oil to return to the oil pool.

[0060] Specifically, the plug for fixing the spring in the first spring hole 2012 is provided with a through hole, which connects the first spring hole 2012 and the spacer 6. The upper end surface of the first pump body 201 can be completely fitted with the lower end surface of the upper flange 101, thereby improving the stability of fixing the first pump body 201.

[0061] Furthermore, the outer peripheral surface of the upper flange 101 is sealed and connected to the inner wall surface of the housing, and the space above the upper flange 101 is connected to the space below the upper flange 101 through the first oil path 301, the second oil path 302, the first spring hole 2012 and the interval 6. Since the lubricating oil above the upper flange 101 flows through the first oil path 301, the second oil path 302, the first spring hole 2012 and the interval 6 and then enters the oil pool, the refrigerant above the upper flange 101 cannot pass through the upper flange 101 and enter the oil pool, which is conducive to the stability of the oil pool liquid level and prevents the high-temperature refrigerant from causing the lubricating oil temperature to be too high. Since the lubricating oil above the upper flange 101 can only enter the oil pool after passing through the first oil path 301, the second oil path 302, the first spring hole 2012 and the interval 6, the efficiency of lubricating the vanes in the first vane groove 2011 is improved.

[0062] Preferably, Figure 2 As shown, the second spring hole 2022 is connected to the oil pool.

[0063] The lubricating oil entering the second spring hole 2022 can flow into the oil pool, thereby improving the fluidity of the lubricating oil in the second spring hole 2022. The lubricating oil in the second spring hole 2022 continuously flows in and out, which is conducive to cooling the lubricating oil.

[0064] Preferably, Figure 2 As shown, the pump body assembly also includes a lower pump body, and lubricating oil is injected into the oil pool of the vertical compressor. When the vertical compressor is not working, the liquid level of the lubricating oil in the oil pool is not higher than the lower end surface of the lower pump body.

[0065] The oil level of the lubricating oil is not higher than the lower end surface of the lower pump body, which reduces the injection amount of the lubricating oil, thereby reducing the lubricating oil content as the compressed refrigerant enters the air-conditioning system through the exhaust pipe, greatly reducing the amount of oil film formed in the system pipeline, improving the heat exchange efficiency of the refrigerant, and thus reducing the energy efficiency of the air-conditioning system.

[0066] The present invention also provides an air conditioner, comprising the vertical compressor.

[0067] Inside the vertical compressor, in addition to the internal space containing more refrigerant, more refrigerant will also be dissolved in the lubricating oil. Therefore, when the vertical compressor uses a lubricating oil that is incompatible with the refrigerant, the refrigerant content in the lubricating oil can be significantly reduced. In addition, the use of incompatible oil can reduce the amount of lubricating oil injected to a certain extent, reduce the amount of lubricating oil entering the air-conditioning system from the exhaust pipe with the compressed refrigerant, greatly reduce the formation of oil film in the system pipeline, improve the heat exchange efficiency of the refrigerant, and reduce the energy efficiency of the air-conditioning system. By adopting the pump body assembly of the present invention, the amount of lubricating oil injected can be further reduced, thereby reducing the amount of lubricating oil entering the air-conditioning system from the exhaust pipe with the compressed refrigerant, reducing the oil discharge rate of the vertical compressor, greatly reducing the formation of oil film in the system pipeline, improving the heat exchange efficiency of the refrigerant, and reducing the energy efficiency of the air-conditioning system.

[0068] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A pump assembly, applied to a vertical compressor of a refrigeration system, comprising a first pump body (201) and an upper flange (101) in contact with an upper end surface of the pump body, wherein the first pump body (201) is provided with a first sliding vane groove (2011) and an upper cylinder, and the first sliding vane groove (2011) is provided with a first spring hole (2012) at one end of the radial outer side of the first pump body (201); characterized in that: A second oil circuit (302) extending along the radial direction of the first pump body (201) is provided at the upper end of the first slide groove (2011), one end of the second oil circuit (302) is connected to the first spring hole (2012), and the other end is spaced apart from the upper cylinder (6), a first oil circuit (301) is provided between the second oil circuit (302) and the upper end surface of the upper flange (101), and a refrigerant outlet hole is provided between the upper cylinder and the upper end surface of the upper flange (101).

2. The pump assembly according to claim 1, characterized in that: The pump body assembly comprises a second pump body (202), the second pump body (202) is provided with a second spring hole (2022), the second pump body (202) is arranged below the first pump body (201), and a partition (3) is arranged between the second pump body (202) and the first pump body (201); the pump body assembly also comprises a rotating shaft (7), the rotating shaft (7) is provided with a central oil hole (701), and the central oil hole (701) is connected to the second spring hole (2022) via a third oil path.

3. The pump assembly according to claim 2, characterized in that: The upper flange (101) comprises a protrusion facing upwards, the protrusion is provided with an axial hole (1011), the inner wall of the axial hole (1011) is provided with a first groove (401) and a second groove (402) extending in the up-down direction, the upper end of the first groove (401) is connected with the upper end of the second groove (402); the lower end of the first groove (401) is connected with the central oil hole (701), and the lower end of the second groove (402) is connected with the second spring hole (2022); the third oil circuit comprises the first groove (401) and the second groove (402).

4. The pump assembly according to claim 3, characterized in that: The upper flange (101) is provided with a first oil hole (501), the first pump body (201) is provided with a second oil hole (502), and the partition plate (3) is provided with a third oil hole (503); the inlet of the first oil hole (501) is connected to the lower end of the second groove (402), the outlet of the third oil hole (503) is connected to the second spring hole (2022), and the first oil hole (501), the second oil hole (502) and the third oil hole (503) are connected end to end.

5. The pump assembly according to claim 2, characterized in that: A protrusion (303) is provided on the outer periphery of the partition (3), and the protrusion (303) is arranged between the first spring hole (2012) and the second spring hole (2022).

6. The pump assembly according to any one of claims 1 to 5, characterized in that: The upper end surface of the upper flange (101) is provided with a recessed portion (1012), and the bottom surface of the recessed portion (1012) is provided with a valve plate, the valve plate covers the refrigerant outlet hole, and the inlet of the first oil circuit (301) is located on the bottom surface of the recessed portion (1012).

7. A vertical compressor, characterized in that: The invention comprises a housing and a pump body assembly according to any one of claims 1 to 6.

8. The vertical compressor according to claim 7, characterized in that: An oil pool is provided at the bottom of the outer shell, the outer peripheral surface of the upper flange (101) is connected to the inner wall surface of the outer shell, a gap (6) is formed between the outer peripheral surface of the first pump body (201) and the inner wall surface of the outer shell, the first spring hole (2012) is connected to the gap (6), and the gap (6) is connected to the oil pool.

9. The vertical compressor according to claim 8, characterized in that: The second spring hole (2022) is connected to the oil pool.

10. The vertical compressor according to claim 7, characterized in that: The pump body assembly also includes a lower pump body. Lubricating oil is injected into the oil pool of the vertical compressor. When the vertical compressor is not working, the liquid level of the lubricating oil in the oil pool is not higher than the lower end surface of the lower pump body.

11. An air conditioner, characterized in that: A vertical compressor comprising the vertical compressor described in any one of claims 7 to 10.

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