CN104314788A

CN104314788A - Thrust track bearing for refrigeration compressor

Info

Publication number: CN104314788A
Application number: CN201410439643.6A
Authority: CN
Inventors: 何仁庶; 戴竟雄; 袁庆庆; 肖锐; 陈宇; 程恺
Original assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Current assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Priority date: 2014-09-01
Filing date: 2014-09-01
Publication date: 2015-01-28

Abstract

The invention relates to a thrust track bearing for a refrigeration compressor. The bearing is provided with an upper thrust spacer and a lower thrust spacer, wherein a retainer is mounted between the upper thrust spacer and the lower thrust spacer, a beaded roller is embedded in the retainer, and groove tracks are respectively arranged on the surfaces, which are opposite to the beaded roller, of the upper thrust spacer and the lower thrust spacer; the depths of the groove tracks of the upper thrust spacer and the lower thrust spacer are 0.1 to 0.5 mm; the section outlines of the groove tracks of the upper thrust spacer and the lower thrust spacer are V-shaped, trapezoid or arc-shaped. The thrust track bearing disclosed by the invention is simple in structure and convenient to operate, ensures the rolling stability of the bearing, reduces the high frequency noise of the compressor, and improves the mechanical property of the compressor.

Description

A kind of refrigeration compressor thrust track bearing

Technical field

The present invention relates to the component of refrigeration compressor, be especially applied to a kind of refrigeration compressor thrust track bearing of refrigeration compressor.

Background technique

At present, reciprocating type refrigeration compressor, its crankshaft support structure as shown in Figure 1.Bent axle is placed in cylinder seat, during compressor operating, for reducing the frictional loss of bent axle plane and cylinder seat plane contact place, usually can increase a set of bearing arrangement between two surface of contact.The sliding friction of two contact planes is converted into rolling friction, reduces friction power loss, promote compressor performance.The bearing being applied to reciprocating type refrigeration compressor is generally thrust bearing, its structure as shown in Figure 2, there is upper thrust washer and lower thrust washer, be provided with retainer between upper thrust washer and lower thrust pad, be embedded with ball roller in retainer, the material of usual retainer is engineering plastics, gap is there is between ball roller and retainer, due to the existence of this gap, during work, ball roller can shake relative to retainer, and retainer also can produce certain plastic deformation simultaneously.Found by analytical calculation and Experimental Comparison test, ball roller rocking when compressor operating, can obviously increase the noise of invariable frequency compressor at 6300hz_10000hz high band, be used on frequency-changeable compressor, when rotating speed is increased to 4000r/min and is higher, due to rocking of ball roller, each frequency range noise of compressor all can increase.

Summary of the invention

Object of the present invention is improved above shortcoming exactly, provides structure simple, improves thrust bearing stability in roll, promote compressor performance, reduce the high frequency noise of compressor.

Concrete scheme of the present invention is: a kind of refrigeration compressor thrust track bearing, there is upper thrust washer and lower thrust washer, between upper thrust washer and lower thrust pad, retainer is installed, be embedded with ball roller in retainer, it is characterized in that: the surface that described upper thrust washer is relative with ball roller with lower thrust washer is equipped with groove track.

Described a kind of refrigeration compressor thrust track bearing, is characterized in that: the groove track degree of depth of described upper thrust washer and lower thrust washer is 0.1-0.5mm.

Described a kind of refrigeration compressor thrust track bearing, is characterized in that: the cross section profile of the groove track of described upper thrust washer and lower thrust washer is V-arrangement, trapezoidal or arc.

Structure of the present invention is simple, easy to make, ensure that bearing element stability, reduces the high frequency noise of compressor, improve the mechanical property of compressor.

Accompanying drawing explanation

Fig. 1 is current reciprocating type refrigeration compressor Curved shaft support schematic diagram;

Fig. 2 is current thrust bearing structure schematic diagram;

Fig. 3 is structural representation of the present invention;

Stressed schematic diagram when Fig. 4 is actual motion of the present invention;

Fig. 5 is thrust plate plan view of the present invention;

Fig. 6 is the plan view of Fig. 5

Fig. 7 is Fig. 6 I place enlarged view.

In figure, the upper thrust washer of 1-, thrust washer under 2-, 3-retainer, 4-ball roller, 5-groove track.

Embodiment

See Fig. 3-7, a kind of refrigeration compressor thrust track bearing of the present invention, there is upper thrust washer 1 and lower thrust washer 2, between upper thrust washer 1 and lower thrust pad 2, retainer 3 is installed, be embedded with ball roller 4 in retainer 3, the surface that described upper thrust washer 1 is relative with ball roller 4 with lower thrust washer 2 is equipped with groove track 5; The groove track degree of depth of described upper thrust washer 1 and lower thrust washer 2 is 0.1-0.5mm; The cross section profile of the groove track of described upper thrust washer 1 and lower thrust washer 2 is V-arrangement, trapezoidal or arc.Working principle: by the bearing of thrust axis of an orbit between cylinder seat and bent axle, plays axial thrust and circumference leading role, during actual motion, when ball roller has radial rolling trend, and the lateral force F that ball roller will bear perpendicular to groove track face ₁and F ₂, lateral force F ₁, F ₂a horizontal component F can be produced respectively _jand F _r, at F _jor F _runder reaction force; ball roller can keep relative position constant; can not shake; all the time along groove track high speed operation; when the present invention applies to frequency-changeable compressor; compressor rotary speed be promoted to 4000r/min and higher time, effectively can reduce each frequency range noise of frequency-changeable compressor, reduce complete machine noise 1-2dB; When applying to traditional invariable frequency compressor, there is obvious inhibitory action to 6300-10000Hz high band noise.

Claims

1. a refrigeration compressor thrust track bearing, there is upper thrust washer and lower thrust washer, between upper thrust washer and lower thrust pad, retainer is installed, be embedded with ball roller in retainer, it is characterized in that: the surface that described upper thrust washer is relative with ball roller with lower thrust washer is equipped with groove track.

2. a kind of refrigeration compressor thrust track bearing according to claim 1, is characterized in that: the groove track degree of depth of described upper thrust washer and lower thrust washer is 0.1-0.5mm.

3. a kind of refrigeration compressor thrust track bearing according to claim 1, is characterized in that: the cross section profile of the groove track of described upper thrust washer and lower thrust washer is V-arrangement, trapezoidal or arc.