CN214304342U - Compressor pump body and compressor - Google Patents

Compressor pump body and compressor Download PDF

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Publication number
CN214304342U
CN214304342U CN202022944594.5U CN202022944594U CN214304342U CN 214304342 U CN214304342 U CN 214304342U CN 202022944594 U CN202022944594 U CN 202022944594U CN 214304342 U CN214304342 U CN 214304342U
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CN
China
Prior art keywords
bearing
oil
compressor
cylindrical structure
oil suction
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Active
Application number
CN202022944594.5U
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Chinese (zh)
Inventor
龚沛
邝嘉杰
邓燕
松本嘉文
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Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Original Assignee
Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
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Application filed by Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd filed Critical Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Priority to CN202022944594.5U priority Critical patent/CN214304342U/en
Priority to JP2022522673A priority patent/JP2023509809A/en
Priority to PCT/CN2021/082522 priority patent/WO2022121148A1/en
Application granted granted Critical
Publication of CN214304342U publication Critical patent/CN214304342U/en
Priority to JP2023004375U priority patent/JP3246237U/en
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Anticipated expiration legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The utility model relates to a compressor pump body and compressor. The compressor pump body comprises a first bearing, a second bearing, a cylinder assembly, a piston, a crankshaft and a pump oil cover; the pump oil cover is detachably clamped and fixed outside the second bearing and comprises a cover body and an oil suction pipe; the cover body comprises a first cylindrical structure and a second cylindrical structure; a plurality of salient points are convexly arranged on the surface of the inner side of the second cylindrical structure, and the salient points and the outer diameter of the second bearing form interference fit; the inner side of the connecting part is abutted against the end face of the second bearing to form an annular contact surface; one end of the oil suction pipe is communicated with the crankshaft pump oil hole, and the other end of the oil suction pipe is communicated with the compressor oil pool. The utility model discloses utilize the salient point with second bearing external diameter interference fit realizes that the block is fixed, strikes through the staff when fixed stability is good and can accomplish the equipment operation, and the dismouting simple operation effectively improves the packaging efficiency.

Description

Compressor pump body and compressor
Technical Field
The utility model relates to a compressor technical field especially relates to a compressor pump body and compressor.
Background
In the prior art, a compressor generally comprises an upper cover, a lower cover, a shell, a motor fixed inside the shell for providing rotary power, and a pump body for compressing a refrigerant. In particular, in the case of a compressor, an oil cap needs to be mounted on a lower bearing handle portion, so that lubricating oil can be constantly supplied to each portion of the pump body, which is prone to frictional wear, during operation of the compressor, thereby ensuring long-term stable operation of the compressor. In the prior art, the pump oil cover is equivalent to the existing silencing cover in structure, and the cover body of the pump oil cover covers the whole lower bearing end face and is matched and fixed with the lower bearing end face through screws fixed on a pump body.
The fixing mode leads to higher requirements on the dimensional accuracy such as height, outer diameter and the like of the positive cover body part of the pump oil cover structure, when the height of the positive cover body part is too large, the sealing performance of the joint of the pump oil cover and the lower bearing is insufficient, when the height is too small, the stress received by the bolt fixing part after installation is larger, the problem that the edge of the cover body is cracked is easily caused, and the production management is difficult to carry out; meanwhile, for a compressor with a single-rotor lower bearing without an exhaust hole, the actual effect of the pump oil cover covering the whole lower bearing end face is not large, the structure is complex, material waste is caused, the processing procedure is increased, and the production efficiency and the production cost are influenced.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a compressor pump body, it has simple structure, structural strength height, the low and low in production cost's of the processing degree of difficulty advantage.
A compressor pump body comprises a first bearing, a second bearing, a cylinder assembly, a piston, a crankshaft and a pump oil cover;
the first bearing, the cylinder assembly and the second bearing are detachably fixed in sequence and enclose an independent refrigerant compression working space; the piston is movably arranged in the refrigerant compression working space; the crankshaft movably penetrates through the inner hole of the first bearing and the inner hole of the second bearing and can drive the piston to reciprocate and complete refrigerant compression; a crankshaft pump oil hole is formed in the crankshaft along the axial direction;
the pump oil cover is detachably clamped and fixed outside the second bearing and comprises a cover body and an oil suction pipe; the cover body is of a hollow structure and comprises a first cylindrical structure and a second cylindrical structure, the first cylindrical structure and the second cylindrical structure are fixedly communicated through a connecting part, and the outer diameter of the second cylindrical structure is not smaller than the inner diameter of the first cylindrical structure; a plurality of salient points are convexly arranged on the surface of the inner side of the second cylindrical structure, and the salient points and the outer diameter of the second bearing form interference fit; the inner side of the connecting part is abutted against the end face of the second bearing to form an annular contact surface; one end of the oil suction pipe is fixedly arranged in the inner hole of the first cylindrical structure in a penetrating mode and communicated with the crankshaft pump oil hole, and the other end of the oil suction pipe is communicated with the compressor oil pool.
The embodiment of the utility model provides a compressor pump body, it is through right the structural design of pump oil cap set up a plurality of bumps in the second cylinder structure, the bump with the second bearing external diameter forms interference fit. The technical scheme of the embodiment of the utility model utilizes interference fit to realize clamping fixation, the assembly operation can be completed through manual pressing while the fixation stability is good, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved; moreover, through the arrangement of interference fit clamping, the problem that the local position of the pump oil cover is subjected to overlarge stress after being fixed by using a bolt to be installed, so that the pump oil cover is broken is solved, the overall structural strength is high, and the service life is effectively prolonged; additionally, the utility model discloses technical scheme is for utilizing the bump with the external diameter of second bearing stalk portion forms interference fit, has avoided the second cylinder structure whole with the second bearing stalk portion forms the machining precision requirement that interference fit leads to and is higher, greatly increased the processing degree of difficulty, extension processing cycle, influence efficiency and processing cost's problem.
Furthermore, the oil suction pipe is of a three-section structure and comprises a first pipe section far away from the cover body, the extending direction of the first pipe section is parallel to the axial direction of the crankshaft and is arranged towards the cylinder assembly, the arrangement enables the compressor pump body to be applied to the horizontal compressor, so that the length of the inlet end of the oil suction pipe immersed in the oil pool can be ensured, liquid in the oil pool of the horizontal compressor easily flows in a large range, and the oil suction pipe is of a three-section structure, so that lubricating oil can be smoothly supplied to each contact friction position in the pump body through the oil suction pipe to be lubricated when the liquid level fluctuates greatly, and abrasion is avoided.
The first bearing comprises a first bearing handle part and a first bearing flange, and the first bearing flange is annularly arranged on the outer side of one end of the first bearing handle part; the first bearing flange is provided with a first oil suction hole in a penetrating manner along the axial direction of the crankshaft; the cylinder assembly comprises a cylinder body, and a second oil suction hole penetrates through the position, corresponding to the first oil suction hole, of the cylinder body; the end part of the first pipe section corresponds to the second oil suction hole in position and is sequentially communicated with the first oil suction hole and the second oil suction hole. The first oil suction hole and the second oil suction hole are arranged so that lubricating oil can conveniently flow back to the oil pool, and the first oil suction hole, the second oil suction hole and the end position of the first pipe section are correspondingly arranged so that the returned lubricating oil can conveniently flow back to each matching contact part of the pump body again from the oil suction pipe, and the lubricating effect is achieved.
The second bearing comprises a second bearing handle part and a second bearing flange, and the second bearing flange is annularly arranged on the outer side of one end of the second bearing handle part; and a plurality of salient points on the inner side of the second cylindrical structure form interference fit with the outer diameter of the second bearing handle part.
Further, the number of the convex points is at least 3, and the convex points are uniformly arranged on the inner side of the second cylindrical structure along the circumferential direction so as to ensure the stability of clamping and fixing.
Furthermore, the interference magnitude of the interference fit between the convex point and the outer diameter of the second bearing handle is 0.02-0.5 mm, so that the clamping and fixing stability is ensured, and the convenience of the dismounting operation is ensured.
Furthermore, connecting portion are the ring structure, its centre of a circle with first cylinder structure and the axle center coincidence of second cylinder structure, the simple structure of connecting portion is convenient for process.
The embodiment of the utility model provides a compressor pump body, it is through right the structural design of pump oil cap set up a plurality of bumps in the second cylinder structure, the bump with the second bearing external diameter forms interference fit. The technical scheme of the embodiment of the utility model utilizes interference fit to realize clamping fixation, the assembly operation can be completed through manual knocking while the fixation stability is good, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved; moreover, through the arrangement of interference fit clamping, the problem that the local position of the pump oil cover is subjected to overlarge stress after being fixed by using a bolt to be installed, so that the pump oil cover is broken is solved, the overall structural strength is high, and the service life is effectively prolonged; in addition, the technical scheme of the embodiment of the utility model is to utilize the bump and the external diameter of second bearing handle portion to form interference fit, and further limit the setting of bump in preferred embodiment, ensure the stability of block fixation, and effectively avoided the second cylinder structure whole with the second bearing handle portion forms interference fit and leads to the fact that the machining precision requires higher, greatly increased the processing degree of difficulty, prolonged processing cycle, influence efficiency and processing cost's problem; in a further embodiment, the structures of the oil suction pipe, the first bearing and the cylinder body are further limited, so that the oil suction pipe, the first bearing and the cylinder body can be applied to a horizontal compressor, and can be smoothly supplied to each contact friction position in the pump body for lubrication through the oil suction pipe when the liquid level fluctuates greatly, so that the lubrication effect is ensured, and the abrasion is avoided.
Additionally, the embodiment of the utility model provides a still provide a compressor, it includes above the compressor pump body. The embodiment of the utility model provides a compressor simple structure, manufacturing procedure reasonable in design, processing and packaging efficiency are high, and lubricated effectual in the course of the work, are difficult for appearing structural damage, long service life because of dry friction.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a pump body of a compressor according to embodiment 1 of the present invention;
fig. 2 is a longitudinal sectional schematic view of a compressor pump body according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a fixing structure of the pump oil cover and the second bearing according to embodiment 1 of the present invention;
fig. 4 is an exploded view of the cover, the oil suction pipe, and the second bearing structure according to embodiment 1 of the present invention;
fig. 5 is a longitudinal sectional view of the cover according to embodiment 1 of the present invention;
fig. 6 is a schematic view of a pump body structure of a compressor according to embodiment 2 of the present invention;
fig. 7 is a longitudinal sectional schematic view of a compressor pump body according to embodiment 2 of the present invention;
fig. 8 is a schematic view of a fixing structure of the pump oil cover and the second bearing according to embodiment 2 of the present invention;
fig. 9 is an explosion illustration of the cover, the oil suction pipe and the second bearing structure in embodiment 2 of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-2, fig. 1 is a schematic diagram of a compressor pump body according to embodiment 1 of the present invention, and fig. 2 is a schematic diagram of a longitudinal section of a compressor pump body according to embodiment 1 of the present invention, as shown in the figure, embodiment 1 of the present invention provides a compressor pump body applied to a vertical compressor, which includes a first bearing 10, a second bearing 20, a cylinder assembly 30, a piston 60, a crankshaft 40, and a pump oil cap 50.
The first bearing 10, the cylinder assembly 30 and the second bearing 20 are detachably fixed in sequence and enclose an independent refrigerant compression working space; the piston 60 is movably arranged in the refrigerant compression working space; the crankshaft 40 movably penetrates through the inner hole of the first bearing 10 and the inner hole of the second bearing 20, and can drive the piston 60 to reciprocate and complete the refrigerant compression work; a crank pump oil hole 42 is provided in the crankshaft 40 in the axial direction.
Referring to fig. 3-5, fig. 3 is a schematic view of a fixing structure of the oil pump cover and the second bearing according to embodiment 1 of the present invention, fig. 4 is an explosion schematic view of the cover body, the oil suction pipe and the second bearing according to embodiment 1 of the present invention, and fig. 5 is a longitudinal sectional schematic view of the cover body according to embodiment 1 of the present invention. As shown in the figure, the pump oil cover 50 is detachably fixed outside the second bearing 20 in a snap fit manner, and includes a cover body 52 and an oil suction pipe 54; the cover body 52 is a hollow structure, and includes a first cylindrical structure 522 and a second cylindrical structure 524, the first cylindrical structure 522 is fixedly communicated with the second cylindrical structure 524 through a connecting portion 526, and the outer diameter of the second cylindrical structure 524 is not smaller than the inner diameter of the first cylindrical structure 522; a plurality of salient points (not shown) are convexly arranged on the inner side surface of the second cylindrical structure 524, and the salient points and the outer diameter of the second bearing 20 form interference fit; the inner side of the connecting part 526 is abutted with the end surface of the second bearing 20 and forms an annular contact surface; one end of the oil suction pipe 54 is fixedly inserted into the inner hole of the first cylindrical structure 522 and is communicated with the crankshaft pump oil hole 42, and the other end is communicated with the compressor oil pool.
The embodiment of the utility model provides 1 the compressor pump body, it is through right the structural design of pump oil cap set up a plurality of bumps in the second cylinder structure, the bump with the second bearing external diameter forms interference fit. The technical scheme of the embodiment of the utility model utilizes interference fit to realize clamping fixation, the assembly operation can be completed through manual pressing while the fixation stability is good, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved; moreover, through the arrangement of interference fit clamping, the problem that the local position of the pump oil cover is subjected to overlarge stress after being fixed by using a bolt to be installed, so that the pump oil cover is broken is solved, the overall structural strength is high, and the service life is effectively prolonged; additionally, the utility model discloses technical scheme is for utilizing the bump with the external diameter of second bearing stalk portion forms interference fit, has avoided the second cylinder structure whole with the second bearing stalk portion forms the machining precision requirement that interference fit leads to and is higher, greatly increased the processing degree of difficulty, extension processing cycle, influence efficiency and processing cost's problem.
Example 2
Please refer to fig. 6-9, fig. 6 is a schematic diagram of a structure of a compressor pump body according to embodiment 2 of the present invention, fig. 7 is a schematic diagram of a longitudinal section of a compressor pump body according to embodiment 2 of the present invention, fig. 8 is a schematic diagram of a structure of a pump oil cover and a second bearing fixing structure according to embodiment 2 of the present invention, and fig. 9 is a schematic diagram of an explosion of a cover body, an oil suction pipe and a second bearing structure according to embodiment 2 of the present invention. As shown in the figure, the embodiment 2 of the present invention provides a compressor pump body, which is different from the embodiment 1 in that: the horizontal compressor pump body is horizontally arranged. As an alternative, in this embodiment, the oil suction pipe 54 is a three-segment structure, and includes a first pipe segment far from the cover 52, the extending direction of the first pipe segment is parallel to the axial direction of the crankshaft 40, and the first pipe segment is disposed toward the cylinder assembly 30, this arrangement enables the compressor pump body to be applied to a horizontal compressor to ensure the length of the inlet end of the oil suction pipe immersed in the oil pool, and the liquid in the oil pool in the horizontal compressor is easy to flow in a large range, and the three-segment structure of the oil suction pipe can ensure that the lubricating oil can be smoothly supplied to each contact friction position in the pump body through the oil suction pipe to lubricate when the liquid level fluctuates greatly, so as to avoid abrasion.
Specifically, the first bearing 10 includes a first bearing handle portion 12 and a first bearing flange 14, the first bearing flange 14 is annularly disposed outside one end of the first bearing handle portion 12; the first bearing flange 14 has a first oil suction hole 142 formed therethrough in the axial direction of the crankshaft 40; the cylinder assembly 30 comprises a cylinder body 32, and a second oil suction hole 322 is formed through the cylinder body 32 at a position corresponding to the first oil suction hole 142; the end of the first pipe section corresponds to the second suction hole 322 and is sequentially communicated with the first suction hole 142 and the second suction hole 322. The arrangement of the first oil suction hole 142 and the second oil suction hole 322 facilitates the backflow of the lubricating oil to the oil pool, and the arrangement of the first oil suction hole 142, the second oil suction hole 322 and the end position of the oil suction pipe 54 corresponding to each other can facilitate the backflow of the lubricating oil to be smoothly sucked from the oil suction pipe 54 and supplied to each friction contact matching part, thereby ensuring the lubricating effect of the pump body.
The second bearing 20 comprises a second bearing handle 22 and a second bearing flange 24, and the second bearing flange 24 is annularly arranged outside one end of the second bearing handle 22; the plurality of salient points on the inner side of the second cylindrical structure form interference fit with the outer diameter of the second bearing handle part 22.
Alternatively, the number of the convex points is at least 3, in this embodiment 3, and the convex points are uniformly arranged on the inner side of the second cylindrical structure along the circumferential direction to ensure the stability of the clamping fixation, and in other embodiments, the number of the convex points may be more. Furthermore, the interference magnitude of the interference fit between the salient points and the outer diameter of the second bearing handle part 22 is 0.02-0.5 mm, so that the clamping and fixing stability is ensured, and the convenience of the dismounting operation is ensured.
As an alternative embodiment, the connecting portion 526 has an annular structure, and the axis thereof coincides with the axis of the first cylindrical structure 522 and the second cylindrical structure 524, so that the connecting portion 526 has a simple structure and is easy to process.
The embodiment of the utility model provides 1 and 2 the compressor pump body, it is through right the structural design of pump oil cap set up a plurality of bumps in the second cylinder structure, the bump with the second bearing external diameter forms interference fit. The technical scheme of the embodiment of the utility model utilizes interference fit to realize clamping fixation, the assembly operation can be completed through manual knocking while the fixation stability is good, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved; moreover, through the arrangement of interference fit clamping, the problem that the local position of the pump oil cover is subjected to overlarge stress after being fixed by using a bolt to be installed, so that the pump oil cover is broken is solved, the overall structural strength is high, and the service life is effectively prolonged; in addition, the technical scheme of the embodiment of the utility model is to utilize the bump and the external diameter of second bearing handle portion to form interference fit, and further limit the setting of bump in preferred embodiment, ensure the stability of block fixation, and effectively avoided the second cylinder structure whole with the second bearing handle portion forms interference fit and leads to the fact that the machining precision requires higher, greatly increased the processing degree of difficulty, prolonged processing cycle, influence efficiency and processing cost's problem; in a further embodiment, the structures of the oil suction pipe, the first bearing and the cylinder body are further limited, so that the oil suction pipe, the first bearing and the cylinder body can be applied to a horizontal compressor, and can be smoothly supplied to each contact friction position in the pump body for lubrication through the oil suction pipe when the liquid level fluctuates greatly, so that the lubrication effect is ensured, and the abrasion is avoided.
Example 3
Embodiment 3 of the present invention provides a compressor, which includes the compressor pump body of embodiment 1 or embodiment 2. The embodiment of the utility model provides a compressor simple structure, manufacturing procedure reasonable in design, processing and packaging efficiency are high, and lubricated effectual in the course of the work, are difficult for appearing structural damage, long service life because of dry friction.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (8)

1. A compressor pump body characterized in that: the oil pump comprises a first bearing, a second bearing, a cylinder assembly, a piston, a crankshaft and a pump oil cover;
the first bearing, the cylinder assembly and the second bearing are detachably fixed in sequence and enclose an independent refrigerant compression working space; the piston is movably arranged in the refrigerant compression working space; the crankshaft movably penetrates through the inner hole of the first bearing and the inner hole of the second bearing and can drive the piston to reciprocate and complete refrigerant compression; a crankshaft pump oil hole is formed in the crankshaft along the axial direction;
the pump oil cover is detachably clamped and fixed outside the second bearing and comprises a cover body and an oil suction pipe; the cover body is of a hollow structure and comprises a first cylindrical structure and a second cylindrical structure, the first cylindrical structure and the second cylindrical structure are fixedly communicated through a connecting part, and the outer diameter of the second cylindrical structure is not smaller than the inner diameter of the first cylindrical structure; a plurality of salient points are convexly arranged on the surface of the inner side of the second cylindrical structure, and the salient points and the outer diameter of the second bearing form interference fit; the inner side of the connecting part is abutted against the end face of the second bearing to form an annular contact surface; one end of the oil suction pipe is fixedly arranged in the inner hole of the first cylindrical structure in a penetrating mode and communicated with the crankshaft pump oil hole, and the other end of the oil suction pipe is communicated with the compressor oil pool.
2. The compressor pump body of claim 1, wherein: the oil suction pipe is of a three-section structure and comprises a first pipe section far away from the cover body, and the extending direction of the first pipe section is parallel to the axial direction of the crankshaft and faces the cylinder assembly.
3. The compressor pump body of claim 2, wherein: the first bearing comprises a first bearing handle part and a first bearing flange, and the first bearing flange is annularly arranged on the outer side of one end of the first bearing handle part; the first bearing flange is provided with a first oil suction hole in a penetrating manner along the axial direction of the crankshaft; the cylinder assembly comprises a cylinder body, and a second oil suction hole penetrates through the position, corresponding to the first oil suction hole, of the cylinder body; the end part of the first pipe section corresponds to the second oil suction hole in position and is sequentially communicated with the first oil suction hole and the second oil suction hole.
4. The compressor pump body of claim 1, wherein: the second bearing comprises a second bearing handle part and a second bearing flange, and the second bearing flange is annularly arranged on the outer side of one end of the second bearing handle part; and a plurality of salient points on the inner side of the second cylindrical structure form interference fit with the outer diameter of the second bearing handle part.
5. The compressor pump body of claim 4, wherein: the number of the convex points is at least 3, and the convex points are uniformly arranged on the inner side of the second cylindrical structure along the circumferential direction.
6. The compressor pump body of claim 5, wherein: the interference magnitude of the interference fit between the convex point and the outer diameter of the second bearing handle is 0.02-0.5 mm.
7. The compressor pump body of claim 1, wherein: the connecting part is of a circular ring-shaped structure, and the axis of the connecting part coincides with the axis of the first cylindrical structure and the axis of the second cylindrical structure.
8. A compressor, characterized by: comprising a compressor pump body according to any one of claims 1 to 7.
CN202022944594.5U 2020-12-10 2020-12-10 Compressor pump body and compressor Active CN214304342U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202022944594.5U CN214304342U (en) 2020-12-10 2020-12-10 Compressor pump body and compressor
JP2022522673A JP2023509809A (en) 2020-12-10 2021-03-24 Compressor pumps and compressors
PCT/CN2021/082522 WO2022121148A1 (en) 2020-12-10 2021-03-24 Compressor pump body and compressor
JP2023004375U JP3246237U (en) 2020-12-10 2023-12-05 Compressor pumps and compressors

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Application Number Priority Date Filing Date Title
CN202022944594.5U CN214304342U (en) 2020-12-10 2020-12-10 Compressor pump body and compressor

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CN214304342U true CN214304342U (en) 2021-09-28

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CN202022944594.5U Active CN214304342U (en) 2020-12-10 2020-12-10 Compressor pump body and compressor

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WO (1) WO2022121148A1 (en)

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