CN102644582A

CN102644582A - Exhaust device of compressor

Info

Publication number: CN102644582A
Application number: CN2011100448315A
Authority: CN
Inventors: 曹小军; 李华明; 吴延平
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Midea Toshiba Compressor Corp; Guangdong Meizhi Compressor Co Ltd
Priority date: 2011-02-16
Filing date: 2011-02-16
Publication date: 2012-08-22

Abstract

The invention relates to an exhaust device of a compressor, which comprises an exhaust hole, an exhaust valve piece, a snubber and a spring, wherein the exhaust hole is arranged on a bearing, and the snubber is arranged above the exhaust hole and provided with a limited post downward. The spring is sleeved on the limited post, one end of the spring is abutted to the snubber, and the other end of the spring is pressed on the exhaust valve piece covered on the exhaust hole. The center of the limited post and the center of the exhaust hole are coaxially arranged. The bearing is provided with a mounting groove used for mounting the snubber, the exhaust hole is arranged in the mounting groove, and the center of the mounting groove and the center of the exhaust hole are coaxially arranged. The bearing is provided with a two-way exhaust passage communicated with the exhaust hole and positioned on the outer side of the exhaust hole, and outlets of the two-way exhaust passage are positioned on both sides of the exhaust hole. The exhaust device has the characteristics of simple and reasonable structure, flexibility in operation, easiness in assembly, small exhaust resistance, long service life, good sealability and wide applicability.

Description

The venting gas appliance of compressor

Technical field

The present invention relates to the venting gas appliance of a kind of air conditioner, particularly a kind of compressor.

Background technique

The characteristics that Reed Valve has is simple in structure, moving-mass is light, clearance volume is little, thus be widely used in miniature or mini air compressor and refrigeration compressor in.But because the valve seat vulnerable area area of Reed Valve is excessive, the pressure difference of adding valve seat wall both sides is bigger; If fall valve seat thin excessively; The situation of bearing surface be possibly occur, bearing surface and piston generation metal friction caused to the cylinder interior depression, even stall.

To this situation; Some manufacturer has done a little improvement, as disclosing a kind of outlet valve of compressor among the Chinese patent document number CN201292931, comprises valve plate, valve block and lift limiter; Valve block is a strip; This valve block is contained within the guiding groove of lift limiter loosely, covers the air-flow path of valve plate, and lift limiter is screwed on valve plate.Though this outlet valve has reduced the stress that valve block receives, prolonged the working life of valve block,, the sealing effect of valve block is poor, and gas-flow resistance is big.

Summary of the invention

The object of the invention aims to provide a kind of simple and reasonable, flexible operation, is prone to assembling, exhaust resistance is little, the venting gas appliance of long service life, good seal performance, compressor applied widely, to overcome deficiency of the prior art.

Press the venting gas appliance of a kind of compressor of this purpose design, comprise the exhaust port, exhaust valve plate and the snubber that are arranged on the bearing, its structure characteristic is also to comprise spring; Snubber is arranged on the top of exhaust port, and snubber is towards being arranged with limited post, and spring housing is located on the limited post; One end of spring is resisted against on the snubber; The other end of spring is crimped on the exhaust valve plate, and exhaust valve plate hides on exhaust port, the center of limited post and the coaxial setting in the center of exhaust port; Bearing is provided with the exhaust passage that communicates with exhaust port, and this exhaust passage is positioned at the outside of exhaust port; The exhaust passage is the twocouese passage, and the outlet of this exhaust passage is positioned at two sides of exhaust port.

Said bearing is provided with the mounting groove that is used to lay snubber, and exhaust port is arranged in mounting groove.The center of mounting groove and the coaxial setting in the center of exhaust port.

The cross section of said exhaust valve plate takes the shape of the letter U, and the lower end abutment of spring is in exhaust valve plate.The foundation ring height of the lower end of the sidewall height＞spring of exhaust valve plate.

Said spring is the tower spring.

Said snubber and mounting groove interference fit; Perhaps, bearing be provided with prevent snubber loosening mark closely screw or positive stop lug boss.

Said bearing be provided with prevent snubber loosening mark closely screw, positive stop lug boss or pressing plate.

Exhaust passage among the present invention is the twocouese structure, when exhaust, can effectively reduce exhaust resistance, reduces the consumed power of compressor, promotes efficiency; The center of mounting groove and the coaxial setting in the center of exhaust port, spring capable of using is accurately controlled the position of exhaust valve plate, and can better control the stationarity of exhaust valve plate action and the flexibility of action.

The pretightening force and the restoring force of the exhaust valve plate among the present invention are provided by spring, and the radial displacement of exhaust valve plate is by the foundation ring control of the lower end of the spring that matches with it, and the lift height of exhaust valve plate is by the height decision of the limited post in the snubber.

The lower end abutment of the spring among the present invention is in exhaust valve plate, and the foundation ring height of the lower end of the sidewall height＞spring of exhaust valve plate can avoid spring in movement process, to come off; Matching gap＜the 0.5mm of sidewall and spring, this matching gap can improve the precision degree of the position of spring control exhaust valve plate.

The center of the mounting groove among the present invention and the coaxial setting in the center of exhaust port; The center of limited post and the coaxial setting in the center of mounting groove, the flexibility of exhaust valve plate operation is better, and the exhaust passage is more smooth and easy; And can prevent that skew from appearring in exhaust valve plate at the volley, to such an extent as to influence exhaust effect.

The present invention can effectively strengthen the rigidity of bearing seat portion, effectively reduces the valve seat location distortion of bearing, and can suitably reduce the thickness of valve seat; Reduce the clearance volume of the exhaust port of valve seat; Promote the refrigerating capacity of compressor, the action of exhaust valve plate simultaneously is more flexible, and the exhaust of valve seat is more smooth and easy; Reduce the exhaust resistance of compressor, reduce compressor power consumption.

The present invention is not only applicable to rotary compressor, and is applicable to scroll compressor, and it has simple and reasonable, flexible operation, is prone to assembling, exhaust resistance is little, long service life, good seal performance, advantage of wide range of application.

Description of drawings

Fig. 1 is the broken section structural representation of one embodiment of the invention.

Fig. 2 is the perspective view of bearing.

Fig. 3 is the plan structure schematic representation of bearing.

Fig. 4 is the perspective view of exhaust valve plate.

Fig. 5 is the structural representation of spring.

Fig. 6 is the perspective view of snubber.

Fig. 7 is the structural representation of looking up of snubber.

Fig. 8 is that A-A among Fig. 7 is to the sectional structure schematic representation.

Among the figure: 1 is bearing, and 1.1 is mounting groove, and 1.2 is the exhaust passage, and 1.3 is exhaust port, and 2 is exhaust valve plate, and 3 is spring, and 4 is snubber, and 4.1 is limited post.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

Referring to Fig. 1-Fig. 8, the venting gas appliance of this compressor comprises exhaust port 1.3, exhaust valve plate 2 and the snubber 4 and the spring 3 that are arranged on the bearing 1; Snubber 4 is arranged on the top of exhaust port 1.3, and snubber 4 is towards being arranged with limited post 4.1, and spring 3 is set on the limited post 4.1; One end of spring 3 is resisted against on the snubber 4; The other end of spring 3 is crimped on the exhaust valve plate 2, and exhaust valve plate 2 hides on exhaust port 1.3, the center of limited post 4.1 and the coaxial setting in the center of exhaust port 1.3.

Bearing 1 is provided with the exhaust passage 1.2 that communicates with exhaust port 1.3, and this exhaust passage 1.2 is positioned at the outside of exhaust port 1.3.Exhaust passage 1.2 is the twocouese passage, and the outlet of this exhaust passage 1.2 is positioned at two sides of exhaust port 1.3.The left side that is arranged on exhaust port and the concrete structure on right side have been provided among Fig. 3.

The cross section of exhaust valve plate 2 takes the shape of the letter U, and the lower end abutment of spring 3 is in exhaust valve plate 2.The foundation ring height of the lower end of the sidewall height＞spring 3 of exhaust valve plate 2.Spring 3 is that an end is big, the tower spring that the other end is little.

Bearing 1 be provided with prevent snubber 4 loosening mark closely screw, positive stop lug boss or pressing plate.

Certainly, the present invention can do following improvement: bearing 1 is provided with the mounting groove 1.1 that is used to lay snubber 4, and exhaust port 1.3 is arranged in mounting groove 1.1.The center of mounting groove 1.1 and the coaxial setting in the center of exhaust port 1.3.Snubber 4 and mounting groove 1.1 interference fit; Perhaps, bearing 1 be provided with prevent snubber 4 loosening mark closely screw or positive stop lug boss.

When stopping exhaust, the exhaust port 1.3 on the valve seat of exhaust valve plate 2 and bearing 1 is to be fit-state, and the pretightening force of applying is provided by the spring that matches with it 3.

When exhaust, exhaust valve plate 2 breaks away from the valve seat of bearing 1, leaves exhaust port 1.3, and exhaust valve plate 2 rises to certain altitude, and its lift is just controlled by the length of the limited post 4.1 of snubber.When exhaust finished, exhaust valve plate 2 was returned to the state of fitting with the valve seat of bearing 1 under the effect of the restoring force that the spring that matches with it 3 provides.

When exhaust valve plate 2 pumped, the inside sidewalls of exhaust valve plate 2 matched with the foundation ring of the lower end of spring 3, the radial displacement of control exhaust valve plate 2.Wherein, spring 3 is fastened on the limited post 4.1 of snubber through its upper end.

Claims

1. the venting gas appliance of a compressor; Comprise the exhaust port (1.3), exhaust valve plate (2) and the snubber (4) that are arranged on the bearing (1), it is characterized in that also comprising spring (3), snubber (4) is arranged on the top of exhaust port (1.3); Snubber (4) is towards being arranged with limited post (4.1); Spring (3) is set on the limited post (4.1), and an end of spring (3) is resisted against on the snubber (4), and the other end of spring (3) is crimped on the exhaust valve plate (2); Exhaust valve plate (2) hides on exhaust port (1.3), the coaxial setting in center of the center of limited post (4.1) and exhaust port (1.3); Bearing (1) is provided with the exhaust passage (1.2) that communicates with exhaust port (1.3), and this exhaust passage (1.2) are positioned at the outside of exhaust port (1.3), and this exhaust passage (1.2) are the twocouese passage, and the outlet of exhaust passage (1.2) is positioned at two sides of exhaust port (1.3).

2. the venting gas appliance of compressor according to claim 1 is characterized in that said bearing (1) is provided with the mounting groove (1.1) that is used to lay snubber (4), and exhaust port (1.3) is arranged in mounting groove (1.1).

3. the venting gas appliance of compressor according to claim 2 is characterized in that the center of said mounting groove (1.1) and the coaxial setting in center of exhaust port (1.3).

4. according to the venting gas appliance of the arbitrary described compressor of claim 1 to 3, it is characterized in that the cross section of said exhaust valve plate (2) takes the shape of the letter U, the lower end abutment of spring (3) is in exhaust valve plate (2).

5. the venting gas appliance of compressor according to claim 4 is characterized in that the foundation ring height of lower end of the sidewall height＞spring (3) of said exhaust valve plate (2).

6. the venting gas appliance of compressor according to claim 5 is characterized in that said spring (3) is the tower spring.

7. according to the venting gas appliance of claim 2 or 3 described compressors, it is characterized in that said snubber (4) and mounting groove (1.1) interference fit; Perhaps, bearing (1) be provided with prevent snubber (4) loosening mark closely screw or positive stop lug boss.

8. the venting gas appliance of compressor according to claim 1, it is characterized in that said bearing (1) be provided with prevent snubber (4) loosening mark closely screw, positive stop lug boss or pressing plate.