CN2871910Y

CN2871910Y - Bearing of electric-motor rotor of refrigerating compressor

Info

Publication number: CN2871910Y
Application number: CN 200520121310
Authority: CN
Inventors: 陈艳阳; 陈忠华; 王松; 吴小凌
Original assignee: GUANGZHOU REFRIGERATION CO Ltd
Current assignee: WanBao Group Compressor Co., Ltd.
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2007-02-21
Anticipated expiration: 2015-12-29

Abstract

The utility model relates to technical field of a refrigeration compressor, providing a support device for refrigeration compressor motor rotor, which comprises a support bearing (2), the support bearing (2) is connected with a motor rotor through a plane rolling bearing (8), the plane rolling bearing (8) is provided with a ball holder (6), the ball holder (6) is provided with a plurality of ball holes, a ball (7) is positioned in the ball hole of ball holder (6), an upper shim (4) and a lower shim (3) are arranged on both sides of the ball holder (6) respectively. The utility model adopts plane rolling bearing support, uses rolling friction to supersede sliding friction, reduces abrasion between moving parts and frictional resistance so as to reduce power consumption and noise, increase compressor efficiency, period of usage of the compressor can be extended.

Description

The bearing device of refrigeration compressor motor rotor

Technical field

The utility model relates to technical field of refrigeration compressors, is the bearing device of compressor rotor specifically.

Background technique

In the refrigerant compression machine technology, rotor axis of electric is connected with the cylinder bent axle is compact, rotor is supported by two packing rings that can slide mutually with a block bearing, during the motor operation, between rotor end face and the bearings face, form sliding friction by two packing rings, such structure surface friction drag is big, not only power consumption but also be easy to generate parts depreciation, especially after compressor used a period of time, gasket wear caused the motor rotation imbalance, increase the compressor loss and cause vibration and noise easily, can burn out motor when serious.

Summary of the invention

In order to reduce the friction between refrigeration compressor motor rotor end-face and the block bearing supporting surface, increase work efficiency, the utility model proposes a kind of bearing device of refrigeration compressor motor rotor.

The utility model is realized by following technical solution:

A kind of supporting arrangement of electric-motor rotor of refrigerating compressor; Comprise block bearing; It is characterized in that: block bearing contacts with rotor by the plane rolling bearing; Described plane rolling bearing has a ball retainer; Ball retainer is provided with some ball holes; Ball places in the ball hole of ball retainer; There are respectively Upper gasket and lower gasket in the both sides of ball retainer; The upper surface of Upper gasket contacts with the bearing-surface of rotor; The lower surface of lower gasket contacts with the bearing-surface of block bearing

As optimization, the ball retainer of described plane rolling bearing adopts high-temperature resistance plastice, and the ball material adopts high-carbon-chromium bearing steel.

The beneficial effects of the utility model are: adopt plane rolling bearing and packing ring to combine, promptly replace sliding friction, reduce the wearing and tearing between the moving element, reduce surface friction drag with rolling friction, thereby reduce power consumption, reduce noise, improve compressor efficiency, compressor obtains prolonging working life.

Description of drawings

Fig. 1 is the bearing and the pad schematic representation of support motor rotor in the prior art compressor;

Fig. 2 is the I part enlarged view among Fig. 1;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is an II part enlarged view among Fig. 3;

Fig. 5 is retainer and the ball schematic representation in the plane rolling bearing of the present utility model;

Fig. 6 is an A-A face sectional view among Fig. 5.

1-bent axle among the figure, 2-bearing, 3-Upper gasket, 4-lower levelling plate, 5-rotor, 6-ball retainer, 7-ball, 8-plane rolling bearing.

Embodiment

As depicted in figs. 1 and 2, in the prior art, rotor 5 is and is arranged vertically, the central shaft of rotor 5 links to each other with following bent axle 1, be with bearing 2 outside the bent axle 1, the upper-end surface of bearing 2 is provided with Upper gasket 4 and lower levelling plate 3, and Upper gasket 4 and lower levelling plate 3 are enclosed within the central shaft of rotor 5 simultaneously, Upper gasket 4 and lower levelling plate 3 separate the lower end surface of rotor 5 and the upper-end surface of bearing 2, also have motor stator outside rotor.Below bent axle 1, also have connecting rod, piston, cylinder (not shown).When rotor 5 rotated, the Upper gasket that is attached on rotor 5 end faces formed sliding friction with the lower levelling plate that is attached on static bearing 2 end faces, and abrasion is comparatively serious, and friction power loss is big.

As shown in Figure 3 and Figure 4, the utility model changes Upper gasket 4 of the prior art and lower levelling plate 3 into plane rolling bearing 8, the structure of described plane rolling bearing 8 such as Fig. 4, Fig. 5 and shown in Figure 6, it has a ball retainer 6, ball retainer 6 is provided with the plurality of balls hole, ball 7 places in the ball hole of ball retainer 6, and the bi-side of ball retainer 6 have Upper gasket 4 and lower levelling plate 3 respectively.

See Fig. 3 and Fig. 4 again, rotor 5 is and is arranged vertically, the central shaft of rotor 5 links to each other with following bent axle 1, the bent axle 1 outer bearing 2 that is with, plane rolling bearing 8 is set on the central shaft of rotor 5 and makes the upper end surface that places bearing 2, the Upper gasket 4 of plane rolling bearing 8 contacts with the lower end surface of rotor, the lower levelling plate 3 of plane rolling bearing 8 contacts with the upper-end surface of bearing 3, like this, form rolling friction by plane rolling bearing 8 on rotor 5 and static bearing 2 end faces, can significantly reduce surface friction drag.

The ball retainer 6 of plane rolling bearing 8 adopts high-temperature resistance plastice, and the ball material adopts high-carbon-chromium bearing steel.

The utility model employing plane rolling bearing and packing ring combine, and promptly replace sliding friction with rolling friction, reduce the wearing and tearing between the moving element, reduce surface friction drag, thereby reduce power consumption, reduction noise, raising compressor efficiency and working life.

Claims

1, a kind of bearing device of refrigeration compressor motor rotor, comprise block bearing (2), it is characterized in that: block bearing (2) contacts with rotor by plane rolling bearing (8), described plane rolling bearing (8) has a ball retainer (6), ball retainer (6) is provided with the plurality of balls hole, ball (7) places in the ball hole of ball retainer (6), and the both sides of ball retainer (6) have Upper gasket (4) and lower levelling plate (3) respectively.