CN213450736U

CN213450736U - Self-lubricating bearing and compressor

Info

Publication number: CN213450736U
Application number: CN202022033927.9U
Authority: CN
Inventors: 屈彦松; 龚沛; 徐子婵; 冯桂; 莫金道
Original assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Current assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-06-15
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to a self-lubricating bearing and compressor. The self-lubricating bearing comprises a bearing body and a bearing flange, wherein the bearing flange is annularly arranged on the outer side of one end of the bearing body; the bearing body is provided with a bearing inner hole in a penetrating way; an oil ring groove is formed in the end face of one end of the bearing body, and the oil ring groove is arranged around the bearing inner hole; the bearing body further comprises at least one oil supply channel, and two ends of the oil supply channel are respectively communicated with the oil ring groove and the bearing inner hole. The utility model discloses an oil ring groove that bearing body terminal surface set up for the oil storage combines simultaneously oil supply channel's setting, the lubricating oil accessible of storage in the oil ring groove oil supply channel gets into the bearing hole, and at the bent axle with form the oil film in the clearance between the bearing hole, effectively improve the lubricity, prevent to appear leading to abnormal wear or the problem of sintering because of dry friction.

Description

Self-lubricating bearing and compressor

Technical Field

The utility model relates to a compressor technical field especially relates to a self-lubricating bearing compressor.

Background

In the existing compressor pump body, two ends of a crankshaft are respectively inserted into inner holes of an upper bearing and a lower bearing, and the crankshaft can rotate in the inner holes of the upper bearing and the lower bearing when the pump body operates. The crankshaft is in clearance fit with the inner hole of the bearing, oil is supplied by methods such as arranging an oil hole on the crankshaft or arranging an inner chamfer on the edge of the inner hole on the end face of the bearing, an oil film with a lubricating effect is formed between the crankshaft and the inner hole of the bearing, and abnormal abrasion of the crankshaft and the inner hole of the bearing caused by overlarge pressure is prevented.

The upper/lower bearing used in the existing compressor, in order to reduce the load of the contact position of the bearing bore and the crankshaft, and at the same time, in order to increase the lubricity of oil, the structure of the bearing end face mainly has two types: 1. the end surface of the bearing is provided with an oil-free ring groove, and oil storage is realized only through the design of chamfering the edge of the inner hole of the bearing; 2. the bearing end face is provided with an oil ring groove to realize oil storage and improve the lubricity of the inner hole and the crankshaft.

However, in the development of the heat pump type, the load of the pump body is large in the fan lock-up (FB) test, the pressure ratio between the crankshaft and the bearing bore is large, the oil film is easily broken, and when the oil supply amount is insufficient, the oil film cannot be formed quickly, and the problems of abnormal dry friction wear and even sintering of the crankshaft and the upper/lower bearing bore often occur, and even in the case of using the above-mentioned solution 1 or 2, the problem of sintering cannot be completely avoided.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a self-lubricating bearing, it has simple structure, lubricated effectual advantage.

A self-lubricating bearing comprises a bearing body and a bearing flange, wherein the bearing flange is annularly arranged on the outer side of one end of the bearing body; the bearing body is provided with a bearing inner hole in a penetrating way; an oil ring groove is formed in the end face of one end of the bearing body, surrounds the bearing inner hole and is located at the same end of the bearing body as the bearing flange; the bearing body further comprises at least one oil supply channel, and two ends of the oil supply channel are respectively communicated with the oil ring groove and the bearing inner hole.

The embodiment of the utility model provides a self-lubricating bearing, it passes through the oil ring groove that bearing body terminal surface set up for the oil storage combines simultaneously oil supply channel's setting is realized oil ring groove with the intercommunication of bearing hole, compressor crankshaft are at the operation in-process, the lubricating oil accessible of storage in the oil ring groove oil supply channel gets into the bearing hole for even at compressor high load running state, the bent axle also can have sufficient lubricating oil to get into the bent axle when high-speed running with clearance between the bearing hole to form the oil film, effectively improve the lubricity, prevent to appear leading to unusual wearing and tearing or the problem of sintering because of dry friction.

Further, the oil ring groove is including two relative recess lateral walls that set up, the fuel feeding passageway does the oil ring groove is close to the through-hole or the breach that the recess lateral wall of bearing hole one side runs through and sets up utilize the setting of through-hole or breach makes lubricating oil in the oil ring groove can get into smoothly the bearing hole, and then plays lubricated effect.

Further, the heights of the two groove side walls are different, wherein the height of the groove side wall close to the bearing inner hole side is smaller than the height of the groove side wall far away from the bearing inner hole side, and stored lubricating oil can easily enter the bearing inner hole.

Further, the number of the oil supply channels is at least 3, so that sufficient lubricating oil can enter the bearing inner hole to realize lubrication.

The self-lubricating bearing of the embodiment of the utility model is used for storing oil through the oil ring groove arranged on the end surface of the bearing body, meanwhile, the oil supply channel is combined to realize the communication between the oil ring groove and the bearing inner hole, and when the compressor crankshaft runs, the lubricating oil stored in the oil ring groove can enter the bearing inner bore through the oil supply passage, and in a further preferred embodiment, the specific arrangement and structure of the oil ring groove are further defined, and the number of the oil supply passages is preferably defined, so that even in a high-load operation state of the compressor, sufficient lubricating oil can enter a gap between the crankshaft and the bearing inner hole when the crankshaft runs at a high speed, and an oil film is formed, so that the lubricity is effectively improved, and the problem of abnormal abrasion or sintering caused by dry friction is prevented.

Additionally, the utility model also provides a compressor, it includes above the self-lubricating bearing, compressor stability in use is good, also can not appear the problem of the unusual wearing and tearing of the compressor pump body or sintering at high load running state.

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 self-lubricating bearing according to embodiment 1 of the present invention;

fig. 2 is a longitudinal sectional view of a self-lubricating bearing according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of the self-lubricating bearing and the crank according to embodiment 1 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. 1-3, fig. 1 is a schematic view of a self-lubricating bearing structure according to embodiment 1 of the present invention, fig. 2 is a schematic view of a self-lubricating bearing according to embodiment 1 of the present invention, and fig. 3 is a schematic view of a self-lubricating bearing and a crank structure according to embodiment 1 of the present invention.

As shown in the drawings, embodiment 1 of the present invention provides a self-lubricating bearing, which includes a bearing body 10 and a bearing flange 20, wherein the bearing flange 20 is annularly disposed outside one end of the bearing body 10; the bearing body 10 is provided with a bearing inner hole 12 in a penetrating way; an oil ring groove 14 is formed in the end face of one end of the bearing body 10, the oil ring groove 14 is arranged around the bearing inner hole 12, and the oil ring groove 14 and the bearing flange 20 are located at the same end of the bearing body 10; the bearing body 10 further includes at least one oil supply channel 142, and two ends of the oil supply channel 142 are respectively communicated with the oil ring groove 14 and the bearing inner hole 12.

In this embodiment, the self-lubricating bearing is a bearing applied to a compressor of an air conditioner, and a conventional compressor includes a pump body part internally installed in a housing, the pump body part includes a cylinder, a piston eccentrically rotating in the cylinder, a crankshaft matching with the piston to drive the operation thereof, and upper and lower bearings supporting the crankshaft and forming a closed volume with the cylinder, two ends of the crankshaft are respectively inserted into inner holes of an upper bearing and a lower bearing, the crankshaft and the inner hole of the bearing are in clearance fit, and the crankshaft can rotate in the inner holes of the upper bearing and the lower bearing when the pump body operates.

Embodiment 1 self-lubricating bearing, it passes through the oil ring groove that bearing body terminal surface set up for the oil storage combines simultaneously oil supply channel's setting is realized oil ring groove with the intercommunication of bearing hole, compressor crankshaft are at the operation in-process, the lubricating oil accessible of storage in the oil ring groove oil supply channel gets into the bearing hole for even at compressor high load running state, also can have sufficient lubricating oil get into the bent axle when the bent axle is high-speed to get into the clearance between the bearing hole, and form the oil film, effectively improve the lubricity, prevent to appear leading to unusual wearing and tearing or the problem of sintering because of dry friction.

As an alternative embodiment, in the present embodiment, the oil ring groove 14 includes two groove sidewalls 144 disposed oppositely, wherein the oil supply channel 142 is a through hole or a notch, in the present embodiment, a through hole or a notch is formed through the groove sidewall 144 on the side of the oil ring groove 14 close to the bearing inner hole 12. By means of the arrangement of the through holes or the notches, lubricating oil in the oil ring groove 14 can smoothly enter the bearing inner hole 12, and then the lubricating effect is achieved.

It is further preferred that the two groove side walls 144 have different heights, wherein the height of the groove side wall 144 on the side close to the bearing inner bore 12 is smaller than the height of the groove side wall 144 on the side away from the bearing inner bore 12, which arrangement facilitates easier entry of the stored lubricant into the bearing inner bore 12.

As an alternative, in this embodiment, the number of oil supply channels 142 is at least 3, ensuring that sufficient oil enters the bearing bore 12 for lubrication.

The self-lubricating bearing of the embodiment 1 of the utility model is used for storing oil through the oil ring groove arranged on the end surface of the bearing body, meanwhile, the oil supply channel is combined to realize the communication between the oil ring groove and the bearing inner hole, and when the compressor crankshaft runs, the lubricating oil stored in the oil ring groove can enter the bearing inner bore through the oil supply passage, and in a further preferred embodiment, the specific arrangement and structure of the oil ring groove are further defined, and the number of the oil supply passages is preferably defined, so that even in a high-load operation state of the compressor, sufficient lubricating oil can enter a gap between the crankshaft and the bearing inner hole when the crankshaft runs at a high speed, and an oil film is formed, so that the lubricity is effectively improved, and the problem of abnormal abrasion or sintering caused by dry friction is prevented.

Example 2

Embodiment 2 still provides a compressor, it includes above the self-lubricating bearing, compressor stability in use is good, also the problem of the unusual wearing and tearing of the compressor pump body or sintering can not appear at high load running state.

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

1. A self-lubricating bearing characterized in that: the bearing flange is annularly arranged on the outer side of one end of the bearing body; the bearing body is provided with a bearing inner hole in a penetrating way; an oil ring groove is formed in the end face of one end of the bearing body, surrounds the bearing inner hole and is located at the same end of the bearing body as the bearing flange; the bearing body further comprises at least one oil supply channel, and two ends of the oil supply channel are respectively communicated with the oil ring groove and the bearing inner hole.

2. The self-lubricating bearing of claim 1, wherein: the oil ring groove comprises two opposite groove side walls, and the oil supply channel is characterized in that the oil ring groove is close to the through hole or the notch formed in the groove side wall on one side of the bearing inner hole in a penetrating mode.

3. The self-lubricating bearing of claim 2, wherein: the heights of the two groove side walls are different, wherein the height of the groove side wall close to one side of the bearing inner hole is smaller than the height of the groove side wall far away from one side of the bearing inner hole.

4. The self-lubricating bearing of claim 2, wherein: the number of the oil supply passages is at least 3.

5. A compressor, characterized by: comprising a self-lubricating bearing according to any one of claims 1-4.