CN202203115U

CN202203115U - Rotary compressor

Info

Publication number: CN202203115U
Application number: CN2011202844849U
Authority: CN
Inventors: 吴延平; 李盖敏
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2011-08-05
Filing date: 2011-08-05
Publication date: 2012-04-25
Anticipated expiration: 2021-08-05

Abstract

The utility model relates to a rotary compressor, which comprises a compression mechanism arranged in a shell of the compressor, wherein the compression mechanism comprises a cylinder, a crankshaft, a piston and a slip sheet; the cylinder is provided with a slip sheet groove in slip connection with the slip sheet; the upper side and the lower side of the cylinder are provided with a main bearing and a sub-bearing for supporting the crankshaft; the periphery of the piston is axially provided with a groove, and the front end of the slip sheet is connected with the groove; and a contact surface of the front end of the slip sheet and the groove is provided with an oil storage tank. According to the utility model, since the oil storage tank is arranged on the contact surface of the front end of the slip sheet and the groove, lubricating oil can be flowed out from the oil storage tank to lubricate the slip sheet, so that the friction between the slip sheet and the piston is reduced, the abrasive resistance of the slip sheet is increased, and the service life of the compressor is prolonged. The rotary compressor has the characteristics of simple and reasonable design, low manufacturing cost and wide application range.

Description

A kind of rotary compressor

Technical field

The utility model relates to a kind of rotary compressor.

Background technique

In the existing compressor arrangement, some producer offers groove in order to reduce the friction between piston and the slide plate head on piston external diameter, embeds the slide plate head in the pistion recess simultaneously.When compressor operation, the slide plate head withstands in the pistion recess all the time, and then the swing compressor of type of developing into.A kind of rotary compressor was disclosed on March 9th, 2011 like Chinese document publication number CN201757060U; Rotary compressor is provided with the arc groove that runs through at the axial direction of the periphery of roller; Slide plate one end is arranged to and the corresponding arc surface of arc groove, and the arc surface of slide plate touches the arc groove that leans against roller all the time; The arc surface of slide plate is in a face all the time with arc groove and contacts.The patent documentation publication number spy of Japan opens 2010-242696 and also discloses patent of the same type on October 28th, 2010, and is as shown in Figure 7; Among the figure: 1 ' is that cylinder, 2 ' is that slide plate, 3 ' is that outer piston ring, 4 ' is that inner carrier ring, 5 ' is bent axle; Slide plate 2 ' front end and outer piston ring 3 ' periphery are joined.For this reason, engineers and technicians carried out improvement to said structure, as adopted inside and outside piston ring structure, realized reducing linear velocity problems of too between piston and bent axle.

But in the said structure when compressor operation between inner carrier ring and the outer piston ring owing to receive the influence of gas force, power such as centrifugal force that crankshaft rotating produced; Inner carrier ring and outer piston ring local compression can be very high; If oil-free lubrication, no oil film carry, the wearing and tearing of this position are bigger.

The model utility content

The purpose of the utility model aim to provide a kind of simple and reasonable, fabricating cost is low, long service life, rotary compressor applied widely, to overcome deficiency of the prior art.

A kind of rotary compressor by this purpose design comprises the compressing mechanism that is arranged in the compressor housing, and compressing mechanism comprises cylinder, bent axle, piston and slide plate; Cylinder is provided with the vane slot that is slidingly connected with slide plate, and the both sides up and down of cylinder are provided with the main bearing and the supplementary bearing that can support bent axle; The piston peripheral, axial is provided with a groove, and the front end and the groove of slide plate join; Its structure characteristic is that slide plate front end and grooves contact face are provided with the trapped fuel groove.

Said trapped fuel fluted shaft is to being arranged on the slide plate front-end face.Said trapped fuel channel opening width is M, and the thickness of slide plate is N, and M＜1/2N.The cross section of said trapped fuel groove is circular arc, and the center line of its arc surface is positioned at the 50%N scope in slide plate thickness neutral position.

Perhaps, said trapped fuel fluted shaft is to being arranged on the said groove.Said trapped fuel groove cross section is an arc surface, and its radius R is less than 2 millimeters.Said groove cross section is an arc surface; The central position of said trapped fuel groove is positioned at the arc length scope of the 50% groove arc surface in groove arc surface neutral position.

Perhaps, said trapped fuel groove is arranged on said groove and the said slide plate front-end face simultaneously.

Said piston comprises inner carrier ring and outer piston ring, and groove is arranged on the periphery of outer piston ring.

The utility model is through offering the trapped fuel groove at slide plate front end and grooves contact face place; Lubricant oil can flow out from the trapped fuel groove; Thereby slide plate is lubricated, has reduced the friction of slide plate and piston, increased the wear resistance of slide plate; Prolong the working life of compressor, it has, and simplicity of design is reasonable, fabricating cost is low, advantage of wide range of application.

Description of drawings

Fig. 1 is the utility model one example structure schematic representation.

Fig. 2 is an A place structure for amplifying schematic representation among Fig. 1.

Fig. 3 is second embodiment's partial structurtes schematic representation.

Fig. 4 is a slide vane structure schematic representation among Fig. 3.

Fig. 5 is a B place structure for amplifying schematic representation among Fig. 4.

Fig. 6 is the 3rd embodiment's partial structurtes schematic representation.

Fig. 7 is the existing technology structural representation.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

First embodiment

Referring to Fig. 1 and Fig. 2, this rotary compressor comprises the compressing mechanism that is arranged in the compressor housing, and compressing mechanism comprises cylinder 1, bent axle 5, piston and slide plate 2; Cylinder 1 is provided with the vane slot that is slidingly connected with slide plate 2, and the both sides up and down of cylinder 1 are provided with the main bearing and the supplementary bearing that can support bent axle 5; The piston peripheral, axial is provided with a groove 3.2, and the front end of slide plate 2 and groove 3.2 join.Slide plate 2 front ends and groove 3.2 surface of contact are provided with trapped fuel groove 3.1.

Piston comprises inner carrier ring 4 and outer piston ring 3, and groove 3.2 is arranged on the periphery of outer piston ring 3.Trapped fuel groove 3.1 is axially disposed within on the said groove 3.2.Trapped fuel groove 3.1 cross sections are arc surface, and its radius R is less than 2 millimeters.Groove 3.2 cross sections are arc surface; The central position of said trapped fuel groove 3.1 is positioned at the arc length scope of 50% groove, 3.2 arc surfaces in groove 3.2 arc surface neutral positions.

When compressor operation, lubricant oil flows out from trapped fuel groove 3.1, can strengthen the lubricating of 3.2 of grooves of slide plate front end (head) and piston periphery, has reduced resistance, but also has strengthened radiating effect.

Second embodiment

Referring to Fig. 3-Fig. 5, axially be provided with trapped fuel groove 2.1 on slide plate 2 front-end faces.Trapped fuel groove 2.1 A/Fs are M, and the thickness of slide plate 2 is N, and M＜1/2N.The cross section of trapped fuel groove 2.1 is circular arc, and the center line of its arc surface is positioned at the 50%N scope in slide plate 2 thickness neutral positions.Other does not state part with first embodiment.

The 3rd embodiment

Referring to Fig. 6, trapped fuel groove 6 is arranged on said groove 3.2 and said slide plate 2 front-end faces simultaneously.Wherein, trapped fuel groove 6 is positioned at same first embodiment of this a part of structure on the groove 3.2, and trapped fuel groove 6 is positioned at same second embodiment of this a part of structure on slide plate 2 front-end faces.

Claims

1. a rotary compressor comprises the compressing mechanism that is arranged in the compressor housing, and compressing mechanism comprises cylinder (1), bent axle (5), piston and slide plate (2); Cylinder (1) is provided with the vane slot that is slidingly connected with slide plate (2), and the both sides up and down of cylinder (1) are provided with the main bearing and the supplementary bearing that can support bent axle (5); The piston peripheral, axial is provided with a groove (3.2), and the front end of slide plate (2) and groove (3.2) join; It is characterized in that slide plate (2) front end and groove (3.2) surface of contact are provided with trapped fuel groove (2.1,3.1,6).

2. rotary compressor according to claim 1 is characterized in that said trapped fuel groove (2.1) is axially disposed within on slide plate (2) front-end face.

3. rotary compressor according to claim 2 is characterized in that said trapped fuel groove (2.1) A/F is M, and the thickness of slide plate (2) is N, and M＜1/2N.

4. rotary compressor according to claim 3 is characterized in that the cross section of said trapped fuel groove (2.1) is circular arc, and the center line of its arc surface is positioned at the 50%N scope in slide plate (2) thickness neutral position.

5. rotary compressor according to claim 1 is characterized in that said trapped fuel groove (3.1) is axially disposed within on the said groove (3.2).

6. rotary compressor according to claim 5 is characterized in that said trapped fuel groove (3.1) cross section is an arc surface, and its radius R is less than 2 millimeters.

7. rotary compressor according to claim 6 is characterized in that said groove (3.2) cross section is an arc surface; The central position of said trapped fuel groove (3.1) is positioned at the arc length scope of 50% groove (3.2) arc surface in groove (3.2) arc surface neutral position.

8. rotary compressor according to claim 1 is characterized in that said trapped fuel groove (6) is arranged on said groove (3.2) and said slide plate (2) front-end face simultaneously.

9. according to each described rotary compressor of claim 1 to 8, it is characterized in that said piston comprises inner carrier ring (4) and outer piston ring (3), groove (3.2) is arranged on the periphery of outer piston ring (3).