Pump body assembly, compressor and air conditioner with same

Abstract

The application provides a pump body assembly, a compressor and an air conditioner with the same, a crankshaft, a separation structure and an oil storage space. The crankshaft comprises a first eccentric structure and a second eccentric structure arranged in sequence in an axial direction. The separation structure is arranged between the first eccentric structure and the second eccentric structure. The separation structure comprises a bearing area and a non-bearing area. The load of the bearing area is greater than that of the non-bearing area, and the oil storage space is arranged in the non-bearing area. According to the pump body assembly, the lubrication effect at the separation structure can be ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a pump body assembly, a compressor and an air conditioner with the same. BACKGROUND

[0002] At present, a rotary compressor has the advantages of high efficiency and low cost, and with the market demand, the displacement of the rotary compressor is getting larger and larger (has been expanded to more than 100CC). Due to the size limitation of the air conditioning system, the outer diameter of the compressor shell is required to be as small as possible. For large displacement rotary compressors, especially double-rotor compressors, it is necessary to have a large cylinder diameter and a large cylinder height, thereby causing a large bearing span and a long rotating inertia force arm, and the corresponding crankshaft and bearing are subjected to a large force and have a high risk of wear, and the reliability of the compressor is difficult to guarantee. The existing technology introduces a bearing partition plate to increase auxiliary support (intermediate bearing) in the middle part of the crankshaft, so as to improve the stress on the upper and lower parts of the crankshaft. A radial oil outlet hole and an axial oil groove are formed at the position corresponding to the intermediate bearing of the crankshaft, and the oil passage structure is designed similar to the eccentric oil hole and oil groove of the crankshaft. With the rotation of the crankshaft, the lubricating oil enters the axial oil groove through the radial oil outlet hole, and then enters the intermediate bearing friction pair for lubrication.

[0003] However, it is found in actual reliability tests that the intermediate bearing of the crankshaft is prone to wear. The analysis shows that the main reason is that the oil passage opening mode of the intermediate bearing has problems. The intermediate bearing friction pair subjected to the load has a bearing area and a non-bearing area. However, the radial oil outlet hole and the axial oil groove are arranged on the crankshaft and rotate with the crankshaft. The radial oil outlet hole and the axial oil groove will be in the bearing area and the non-bearing area alternately with the rotation of the crankshaft. When the radial oil outlet hole and the axial oil groove rotate to the bearing area, the oil film of the bearing friction pair is damaged, causing lubrication failure and further causing wear.

[0004] Therefore, how to provide a pump body assembly, a compressor and an air conditioner with the same which can guarantee the lubrication effect at the partition structure has become a problem to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to provide a pump body assembly, a compressor and an air conditioner with the same which can guarantee the lubrication effect at the partition structure.

[0006] In order to solve the above problems, the present application provides a pump body assembly, comprising:

[0007] a crankshaft, the crankshaft comprising a first eccentric structure and a second eccentric structure arranged in sequence in the axial direction;

[0008] a partition structure, the partition structure being arranged between the first eccentric structure and the second eccentric structure; the partition structure comprising a bearing area and a non-bearing area; the load of the bearing area being greater than the load of the non-bearing area;

[0009] and an oil storage space, the oil storage space being arranged in the non-load-bearing area.

[0010] Further, the load-bearing area and the non-load-bearing area are arranged in sequence around the circumference of the crankshaft.

[0011] Further, the pump body assembly further comprises a first cylinder structure, and the first eccentric structure is located in the first cylinder structure; the first cylinder structure is provided with a sliding vane groove; taking the center line of the sliding vane groove in the circumferential direction as an initial position, the central angle between the initial position and the circumferential center line of the oil storage space is a; wherein the region between 0° and 115° is the non-load-bearing area; and / or, the region between 300° and 360° is the non-load-bearing area.

[0012] Further, the crankshaft extends in the vertical direction, and the first eccentric structure is located above the second eccentric structure.

[0013] Further, the inner circumferential side of the separation structure is provided with an oil storage groove, and the oil storage groove forms the oil storage space; the oil storage groove comprises an opening, and the opening faces the crankshaft.

[0014] Further, the minimum distance between the inner wall of the oil storage groove and the surface of the separation structure close to the first eccentric structure is H1; wherein H1>2mm.

[0015] Further, the minimum distance between the inner wall of the oil storage groove and the surface of the separation structure close to the second eccentric structure is H1; wherein H1>2mm.

[0016] Further, the oil storage groove comprises a straight groove extending in the axial direction; and / or, the oil storage groove comprises a spiral groove.

[0017] Further, the crankshaft has a central oil hole, and the central oil hole can provide lubricating oil into the oil storage space.

[0018] Further, the separation structure is provided with an oil return channel, the oil return channel communicates to the oil storage space, and the oil return channel communicates to the oil pool.

[0019] Further, the separation structure comprises a first separation part and a second separation part arranged in sequence in the axial direction, there is a distance between the inner circumferential wall of the second separation part and the outer circumferential wall of the crankshaft, and the oil storage space is arranged on the first separation part; the oil return channel is arranged on the first separation part and / or the second separation part.

[0020] Further, the crankshaft is provided with an oil outlet, the oil outlet communicates to the central oil hole, and the position of the oil outlet corresponds to the position of the oil storage space;

[0021] and / or, the oil return channel is arranged on the first separation part, and the position of the oil outlet corresponds to the position of the second separation part in the axial direction;

[0022] Alternatively, the oil return channel is arranged on the second partition portion, and the oil outlet corresponds to the position of the first partition portion in the axial direction.

[0023] According to still another aspect of the present application, a compressor is provided, comprising the pump body assembly as described above.

[0024] According to still another aspect of the present application, an air conditioner is provided, comprising the compressor as described above.

[0025] The pump body assembly, the compressor and the air conditioner provided by the present application can ensure the lubrication effect at the partition structure, because the oil storage space is arranged in the non-load bearing area, and the oil film at the partition structure will not be damaged no matter where the crankshaft rotates. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the pump body assembly of some embodiments of the present application;

[0027] Figure 2 Structure diagram of the first partition portion of some embodiments of the present application;

[0028] Figure 3 Flow path diagram of the lubricating oil of some embodiments of the present application;

[0029] Figure 4 Partial diagram of the crankshaft of some embodiments of the present application;

[0030] Figure 5 Structure diagram of the pump body assembly of some other embodiments of the present application;

[0031] Figure 6 Structure diagram of the first partition portion of some other embodiments of the present application;

[0032] Figure 7 Flow path diagram of the lubricating oil of some other embodiments of the present application;

[0033] Figure 8 Partial diagram of the crankshaft of some other embodiments of the present application;

[0034] Figure 9 Structure diagram of the second partition portion of some other embodiments of the present application;

[0035] Figure 10 Flow path diagram of the oil storage space of some embodiments of the present application;

[0036] Figure 11 Relationship diagram of the bearing load and the included angle a of some embodiments of the present application.

[0037] The reference signs are as follows:

[0038] 1, crankshaft; 11, first eccentric structure; 12, second eccentric structure; 13, central oil hole; 14, oil outlet; 15, long shaft; 16, middle shaft; 17, short shaft; 18, connecting shaft; 2, partition structure; 21, first partition part; 22, second partition part; 23, oil return channel; 3, oil storage space; 41, first cylinder structure; 42, second cylinder structure; 51, first roller; 52, second roller; 61, upper flange; 62, lower flange; 7, muffler. DETAILED DESCRIPTION

[0039] With reference to Figures 1-11 As shown in the drawings, a pump body assembly comprises a crankshaft 1, a partition structure 2 and an oil storage space 3. The crankshaft 1 comprises a first eccentric structure 11 and a second eccentric structure 12 arranged in sequence in the axial direction. The partition structure 2 is arranged between the first eccentric structure 11 and the second eccentric structure 12. The partition structure 2 comprises a load-bearing area and a non-load-bearing area. The load of the load-bearing area is greater than that of the non-load-bearing area. The oil storage space 3 is arranged in the non-load-bearing area. The oil storage space 3 can be an oil groove or a blind hole, or a notch formed in the inner circumferential wall of the partition structure 2, and the space formed between the crankshaft part between the first eccentric structure 11 and the second eccentric structure 12 is the oil storage space 3.

[0040] With reference to Figure 1 As shown in the drawings, the partition structure 2 is used to bear the compression structure such as the cylinder and the roller installed on the eccentric structure. The pump body assembly further comprises a first flange and a second flange. The first flange and the second flange are respectively located on the two sides of the first eccentric structure 11 and the second eccentric structure 12, i.e. the first flange, the first eccentric structure 11, the partition structure 2, the second eccentric structure 12 and the second flange are arranged in sequence in the axial direction. The partition structure 2, the first cylinder structure 41 on the first eccentric structure 11, the second cylinder on the second eccentric structure 12, the first flange and the second flange are all connected through a plug-in structure such as a screw or a nut. That is, the partition structure 2 does not rotate with the crankshaft 1. The crankshaft 1 further comprises a long shaft 15, a middle shaft 16, a short shaft 17 and a connecting shaft 18. The muffler 7 on the first flange and the second flange is located on the long shaft 15. The partition structure 2 is located on the middle shaft 16, and the lower flange 62 is located on the short shaft 17. The middle shaft 16 and the first eccentric structure 11 are connected through the connecting shaft 18, and the second eccentric structure 12 and the middle shaft 16 are connected through the connecting shaft 18. A first roller 51 is sleeved on the first eccentric structure 11, and a second roller 52 is sleeved on the second eccentric structure 12.

[0041] In the present application, the partition structure 2 does not rotate with the rotation of the crankshaft 1, and the function of the partition structure 2 is equivalent to that of a flange, that is, an intermediate bearing; and the oil storage space 3 is arranged in a non-load-bearing area, so that no matter where the crankshaft 1 rotates, the oil film at the partition structure 2 will not be damaged, causing lubrication failure and further causing wear; the crankshaft 1 can be prevented from being worn at the corresponding position, thereby improving the structural strength of the intermediate part of the crankshaft 1, preventing local deformation from being aggravated by centrifugal force during operation, increasing the degree of distortion of the crankshaft 1, and causing abnormal wear or even jamming of the crankshaft 1 and each bearing. The non-load-bearing area and the load-bearing area can be determined differently according to different pump body assemblies, and the load can be preset. If the load is greater than the preset value, it is a load-bearing area, and if the load is less than or equal to the preset value, it is a non-load-bearing area. The preset values of different pump body assemblies are different. The load of the non-load-bearing area can be zero or not. The axial direction in the present application refers to the extension direction of the crankshaft 1.

[0042] The present application can strengthen the structural strength of the crankshaft 1, reduce the stress deformation of the crankshaft 1, ensure the lubrication of the intermediate bearing friction pair, and reduce the abnormal wear between the crankshaft 1 and the bearing; thereby improving the reliability and comprehensive energy efficiency of the compressor.

[0043] The pump body assembly of the related technical solution comprises a crankshaft 1, an upper flange 61, an upper muffler 7, an upper cylinder, an upper roller, a first partition plate, a second partition plate, a lower cylinder, a lower roller, a lower flange 62, etc. The first partition plate and the second partition plate in the pump body assembly are equivalent to the partition structure 2 of the present application. The long shaft 15 of the crankshaft 1 is matched with the inner hole of the upper flange 61, the short shaft 17 of the crankshaft 1 is matched with the lower flange 62, and at the same time, the intermediate shaft 16 of the crankshaft 1 is matched with the first partition plate, thereby forming an auxiliary support (intermediate bearing) and reducing the degree of distortion of the crankshaft 1. For the lubrication of the intermediate bearing friction pair, an oil guide hole and an axial oil groove are arranged at the corresponding position of the intermediate shaft 16 of the crankshaft 1. This oil passage structure design is similar to the eccentric oil hole and oil groove design of the crankshaft 1. With the rotation of the crankshaft 1, the lubricating oil enters the axial oil groove of the crankshaft 1 through the radial oil guide hole of the crankshaft 1, and then enters the intermediate bearing friction pair for lubrication. However, this intermediate bearing oil passage arrangement has the following problems: there are load-bearing areas and non-load-bearing areas in the intermediate bearing friction pair. The radial oil guide hole and the axial oil guide groove are arranged on the crankshaft 1 and rotate with the crankshaft 1. The radial oil guide hole and the axial oil guide groove will be in the load-bearing area and the non-load-bearing area with the rotation of the crankshaft 1. When the radial oil guide hole and the axial oil guide groove rotate to the load-bearing area, the oil film of the bearing friction pair will be damaged, causing lubrication failure and further causing wear. In addition, the arrangement of the radial oil guide hole and the axial oil guide groove in the intermediate part of the crankshaft 1 will cause the structural strength of the intermediate part of the crankshaft 1 to be poor, the local deformation will be aggravated by the centrifugal force during operation, the degree of distortion of the crankshaft 1 will be increased, and abnormal wear or even jamming of the crankshaft 1 and each bearing will also occur.

[0044] The oil storage space 3 is arranged in the non-load-bearing area, which not only solves the lubrication problem of the intermediate bearing, i.e., the separation structure 2, but also ensures the structural strength of the crankshaft 1, thereby improving the reliability and comprehensive energy efficiency of the compressor.

[0045] In some embodiments, the load-bearing area and the non-load-bearing area are arranged in sequence around the circumference of the crankshaft 1. The oil storage space 3 is arranged in the non-load-bearing area, so that the oil film at the separation structure 2 is not damaged no matter where the crankshaft 1 rotates to.

[0046] In combination with the embodiments shown in Figure 2 and 6 , the pump body assembly further includes a first cylinder structure 41, and the first eccentric structure 11 is located in the first cylinder structure 41. The first cylinder structure 41 is provided with a sliding vane groove. The center line of the sliding vane groove in the circumferential direction is taken as an initial position, and the central angle between the initial position and the circumferential center line of the oil storage space 3 is a. The region between 0° and 115° is a non-load-bearing area, and / or the region between 300° and 360° is a non-load-bearing area. In combination with the embodiments shown in Figure 11 , it is found through a large number of researches and experiments that the load-bearing area and the non-load-bearing area of the separation structure 2 are associated with the position of the sliding vane groove. The exhaust port is arranged on one side of the sliding vane groove, and the load-bearing area and the non-load-bearing area of the separation structure 2 are associated with the position of the exhaust port. The oil storage space 3, such as an oil groove or an oil hole, arranged at the positions of 0° and 115° and 300° and 360° can ensure that the oil film at the separation structure 2 is not damaged no matter where the crankshaft 1 rotates to. Therefore, the non-load-bearing area is formed in the region of the two central angles. In the angle range, it can be ensured that the oil storage groove is always in the non-load-bearing area, which can avoid the failure of the oil film of the bearing friction pair and ensure the lubrication of the intermediate bearing, i.e., the separation structure 2.

[0047] In some embodiments, the crankshaft 1 extends in the vertical direction, and the first eccentric structure 11 is located above the second eccentric structure 12. The pump body assembly of the present application is a vertical assembly, so the first cylinder structure 41 is an upper cylinder, the second cylinder is a lower cylinder, the first flange is an upper flange 61, and the second flange is a lower flange 62.

[0048] In some embodiments, the inner circumferential side of the separation structure 2 is provided with an oil storage groove, and the oil storage groove forms the oil storage space 3. The oil storage groove includes an opening, and the opening faces the crankshaft 1. At this time, the thickness between the upper side wall of the oil storage groove and the upper surface of the separation portion forms a sealing structure, and the thickness between the lower side wall and the lower surface of the separation portion forms a sealing structure, which ensures the sealing property of the separation structure 2 and ensures the performance of the compressor. That is, the oil storage groove cannot penetrate the separation structure 2 in the axial direction of the crankshaft 1, and the thickness on both sides ensures the sealing property of the separation portion. The separation structure 2 is a partition plate.

[0049] In some embodiments, the minimum distance between the inner wall of the oil storage groove and the surface of the separation structure 2 close to the first eccentric structure 11 is H1; and H1>2mm.

[0050] In some embodiments, the minimum distance between the inner wall of the oil storage groove and the surface of the separation structure 2 close to the second eccentric structure 12 is H1; and H1>2mm.

[0051] That is, the thickness between the upper side wall of the oil storage groove and the upper surface of the separation part is H1, and the thickness between the lower side wall of the oil storage groove and the lower surface of the separation part is H1, which can effectively ensure the sealing when H1>2mm.

[0052] In some embodiments, the oil storage groove comprises a straight groove extending in the axial direction; and the inside of the oil storage groove, i.e., the groove bottom, extends in the axial direction.

[0053] In combination with FIG. 1, Figures 5-9 In some embodiments, the spiral groove is a spiral structure, and further, can be a spiral structure extending in the axial direction of the crankshaft 1.

[0054] In some embodiments, the crankshaft 1 has a central oil hole 13, which can provide lubricating oil into the oil storage space 3. The inside of the housing of the compressor has an oil pool, the central oil hole 13 is inserted into the oil pool, and when the crankshaft 1 rotates, the lubricating oil in the oil pool can be drawn into the central oil hole 13, thereby providing lubricating oil into the oil storage space 3.

[0055] In some embodiments, the separation structure 2 is provided with an oil return channel 23, the oil return channel 23 is communicated to the oil storage space 3, and the oil return channel 23 is communicated to the oil pool. When the lubricating oil in the oil storage space 3 reaches a certain amount, it can enter the oil return channel 23 and then return to the oil pool, thereby forming a loop.

[0056] In some embodiments, the separation structure 2 comprises a first separation part 21 and a second separation part 22 arranged in sequence in the axial direction, the inner circumferential wall of the second separation part 22 is spaced apart from the outer circumferential wall of the crankshaft 1, and the oil storage space 3 is arranged on the first separation part 21; the oil return channel 23 is arranged on the first separation part 21 and / or the second separation part 22. The oil storage groove is arranged on the first separation part 21, and the lower part of the oil storage groove penetrates through the first separation part 21. Although the inner circumferential wall of the second separation part 22 is spaced apart from the outer circumferential wall of the crankshaft 1, it is still closer to the crankshaft 1 than the groove bottom (the inner wall farthest from the crankshaft 1) of the oil storage groove. Therefore, the second separation part 22 forms the inner wall surface (i.e., the lower side wall) of the oil storage groove, and the second separation part 22 also forms a sealing structure, which can effectively ensure the sealing of the separation structure 2.

[0057] With reference to Figure 4 As shown in the drawings, the application also discloses some embodiments, wherein the crankshaft 1 is provided with an oil outlet 14, the oil outlet 14 is communicated with the central oil hole 13, and the position of the oil outlet 14 corresponds to the position of the oil storage space 3; when the crankshaft 1 rotates to the position of the oil storage space 3, the lubricating oil in the central oil hole 13 can be guided into the oil storage space 3.

[0058] In some embodiments of the application, the oil return channel 23 is arranged on the first partition 21, and the oil outlet 14 corresponds to the position of the second partition 22 in the axial direction; or the oil return channel 23 is arranged on the second partition 22, and the oil outlet 14 corresponds to the position of the first partition 21 in the axial direction. In this way, the oil path of the lubricating oil at the partition structure 2 is longer, and the lubrication effect is better.

[0059] The first partition 21 is a first partition plate, and the second partition 22 is a second partition plate. With reference to Figures 1-4 As shown in the drawings, in some embodiments of the application, the first partition plate of the application is provided with an oil storage groove in the non-bearing area, and the first partition plate is provided with a radial oil return channel 23; the crankshaft 1 is provided with a guide hole corresponding to the position of the middle part of the second partition plate, and one end of the guide hole forms an oil outlet 14. One side of the oil return channel 23 is communicated with the oil storage groove on the first partition plate, and the other side of the oil return channel 23 is communicated with the oil pool of the housing; as Figure 3 As shown in the drawings, the central shaft hole is inserted into the oil pool, and when the crankshaft 1 rotates, the lubricating oil in the oil pool can be pumped into the central oil hole 13 and guided into the oil storage space 3 through the guide hole, i.e. the oil outlet 14. When the lubricating oil in the oil storage space 3 reaches a certain amount, it can enter the oil return channel 23 and then return to the oil pool, thereby forming a loop. That is, with the rotation of the crankshaft 1, the lubricating oil enters the oil storage space 3 surrounded by the partition plate and the crankshaft 1 through the guide hole corresponding to the position of the middle part of the second partition plate on the crankshaft 1, and is pumped upward under the action of centrifugal force. The lubricated lubricating oil returns to the oil pool through the radial oil return channel 23 of the first partition plate, and the lubrication of the partition structure 2, i.e. the intermediate bearing, is completed. The oil path structure of the application, compared with the related technical solutions, is provided with an oil storage groove in the non-bearing area of the partition structure 2, i.e. the intermediate bearing, which avoids the situation that the oil outlet 14 and the oil storage groove rotate to the bearing area with the crankshaft 1, causing the oil film of the bearing friction pair to be damaged and invalid. The lubrication problem of the intermediate bearing, i.e. the partition structure 2, is well solved, the structural strength of the crankshaft 1 is ensured, the bearing capacity of the crankshaft 1 is improved, and the wear problem of the crankshaft 1 and the bearing caused by large crankshaft 1 deflection and local deformation is improved.

[0060] With reference to Figures 5-9As shown, in some other embodiments of the present application, the first partition plate is provided with an oil storage groove in the non-load-bearing area; a radial oil guide hole is provided at the top end of the first partition plate corresponding to the position of the crankshaft 1, one end of the radial oil guide hole forms an oil outlet 14, the oil guide hole is in communication with the central oil hole 13, the oil storage groove, the gap between the second partition plate and the crankshaft 1, and the oil outlet 14, an oil return channel 23 is provided in the middle of the second partition plate, and the oil return channel 23 is in communication with the oil pool of the housing. It can also be that the lubricating oil in the oil pool is pumped into the central oil hole 13 at the bottom of the crankshaft 1 under the rotating action of the oil pump or the oil guide vane, wherein the lubricating oil reaches the upper position of the first partition plate and enters the oil storage space 3 surrounded by the first partition plate and the crankshaft 1 through the oil guide hole provided at the corresponding position of the crankshaft 1, and the centrifugal force completes the lubrication of the intermediate bearing, i.e. the separation structure 2. The lubricated lubricating oil returns to the oil pool through the oil return channel 23 of the second partition plate under the action of gravity, and the lubrication of this route is completed. The oil passage structure of the present application, compared with the conventional scheme, is provided with an oil storage groove in the non-load-bearing area of the separation structure 2, i.e. the intermediate bearing, which avoids the situation that the oil guide hole and the oil storage groove rotate to the load-bearing area with the crankshaft 1, causing the oil film of the bearing friction pair to be damaged and fail, and solves the lubrication problem of the separation mechanism, i.e. the intermediate bearing, well. At the same time, the structural strength of the crankshaft 1 is ensured, the load-carrying capacity of the crankshaft 1 is improved, and the wear problem of the crankshaft 1 and the bearing caused by large crankshaft 1 deflection and local deformation is improved.

[0061] According to the embodiments of the present application, a compressor is provided, which comprises the pump body assembly as described above. The compressor of the present application is a double-rotor compressor. The bearing partition plate structure and the oil passage system of the existing large-displacement double-rotor compressor are innovatively designed, a lubricating oil passage structure of an intermediate bearing is adopted, the lubrication problem of the intermediate bearing, i.e. the separation structure 2, is solved, the sealing distance of the partition plate is ensured, the structural strength of the crankshaft 1 is improved, and the performance and reliability of the compressor are ensured.

[0062] According to the embodiments of the present application, an air conditioner is provided, which comprises the compressor as described above.

[0063] It is easy for those skilled in the art to understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0064] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, which should be regarded as the protection scope of the present application.

Claims

1. A pump body assembly, characterized by, The pump body assembly comprises: a crankshaft (1), the crankshaft (1) comprising a first eccentric structure (11) and a second eccentric structure (12) arranged in sequence in the axial direction; a partition structure (2), the partition structure (2) being arranged between the first eccentric structure (11) and the second eccentric structure (12), the partition structure (2) comprising a load-bearing area and a non-load-bearing area, the load of the load-bearing area being greater than the load of the non-load-bearing area; and an oil storage space (3), the oil storage space (3) being arranged in the non-load-bearing area. The pump body assembly further comprises a first cylinder structure (41), the first eccentric structure (11) being located in the first cylinder structure (41), a sliding vane groove being arranged on the first cylinder structure (41), and the central line of the sliding vane groove in the circumferential direction being taken as an initial position, the central angle between the initial position and the circumferential center line of the oil storage space (3) being a, wherein the region between 0° and 115° is the non-load-bearing area, and / or the region between 300° and 360° is the non-load-bearing area.

2. The pump body assembly of claim 1, wherein The load-bearing area and the non-load-bearing area are arranged in sequence in the circumferential direction of the crankshaft (1).

3. The pump body assembly of claim 1, wherein The crankshaft (1) extends in the vertical direction, and the first eccentric structure (11) is located above the second eccentric structure (12).

4. The pump body assembly of claim 1, wherein An oil storage groove is formed on the inner circumferential side of the partition structure (2), and the oil storage groove forms the oil storage space (3); the oil storage groove comprises an opening, and the opening faces the crankshaft (1).

5. The pump body assembly of claim 4, wherein The minimum distance between the inner wall of the oil storage groove and the surface of the partition structure (2) close to the first eccentric structure (11) is H1, wherein H1>2mm. The minimum distance between the inner wall of the oil storage groove and the surface of the partition structure (2) close to the second eccentric structure (12) is H1, wherein H1>2mm.

6. The pump body assembly of claim 4, wherein The oil storage groove comprises a straight groove extending in the axial direction, and / or the oil storage groove comprises a spiral groove.

7. The pump body assembly of claim 1, wherein The crankshaft (1) has a central oil hole (13) capable of providing lubricating oil into the oil storage space (3).

8. The pump body assembly of claim 1, wherein An oil return channel (23) is arranged on the partition structure (2), the oil return channel (23) being communicated to the oil storage space (3), and the oil return channel (23) being communicated to an oil pool.

9. The pump body assembly of claim 8, wherein, The partition structure (2) comprises a first partition portion (21) and a second partition portion (22) arranged in sequence in the axial direction, the inner circumferential wall of the second partition portion (22) being spaced apart from the outer circumferential wall of the crankshaft (1), and the oil storage space (3) being arranged on the first partition portion (21); the oil return channel (23) is arranged on the first partition portion (21) and / or the second partition portion (22).

10. The pump body assembly of any one of claims 1-9, wherein, An oil outlet (14) is formed on the crankshaft (1), and when the crankshaft (1) has a central oil hole (13), the oil outlet (14) is communicated to the central oil hole (13), and the position of the oil outlet (14) corresponds to the position of the oil storage space (3). And / or, when the separation structure (2) is provided with an oil return channel (23), and the separation structure (2) comprises a first separation part (21) and a second separation part (22) arranged in sequence in the axial direction, the oil return channel (23) is arranged on the first separation part (21), and the oil outlet (14) corresponds to the position of the second separation part (22) in the axial direction; Or, the oil return channel (23) is arranged on the second separation part (22), and the oil outlet (14) corresponds to the position of the first separation part (21) in the axial direction.

11. A compressor comprising a pump body assembly, characterized by, The pump body assembly is the pump body assembly according to any one of claims 1-10.

12. An air conditioner comprising a compressor, characterized by The compressor is the compressor according to claim 11.

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