CN201786673U

CN201786673U - Rotary compressor

Info

Publication number: CN201786673U
Application number: CN 201020556812
Authority: CN
Inventors: 梁自强; 高强; 吴延平; 曹小军; 李华明
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-04-06
Anticipated expiration: 2020-09-30

Abstract

A rotary compressor. A cylinder is disposed in a housing; a main bearing is disposed on the cylinder; an exhaust vent communicated with a compressing chamber of the cylinder is disposed on the main bearing; a positioning hole is disposed on the tail end of an exhaust valve sheet; a contact rivet fixes a limiter and the exhaust valve sheet on a valve seat of the main bearing after passing through the limiter and a riveting hole; a front end cover of the exhaust valve sheet is pressed on the exhaust vent; the area of the cross section in the middle part of the exhaust valve sheet gradually changes along a connection line between a center of the riveting hole and the center of the exhaust vent; and the closer to the exhaust vent the smaller the area of the cross section in the middle is. The width of the cross section in the middle part of the exhaust valve sheet keeps constant; the thickness of the cross section in the middle part of the exhaust valve sheet gradually changes along the connection line between a center of the riveting hole and the center of the exhaust vent; and the closer to the exhaust vent the smaller thickness is. The utility model has flexible operation, low manufacturing cost, low exhaust resistance and wide application range.

Description

Rotary compressor

Technical field

The utility model relates to a kind of rotary compressor.

Background technique

Existing main bearing modular construction is seen accompanying drawing 1-accompanying drawing 3, respectively by main bearing 1, and snubber 2,3 of outlet valves and rivet 4 are formed.Rivet 4 closely links together the valve seat 1.1 of snubber 2, exhaust valve plate 3, main bearing 1 by riveted holes 1.2 from top to down that are arranged on the main bearing 1.When the gas in the compression chamber reached certain pressure, pressurized gas were opened the tip 3.1 of the exhaust valve plate 3 on the exhaust port 1.3 that is pressed in main bearing 1 and are realized exhaust.The lift height of exhaust valve plate 3 hereinafter to be referred as aperture, limits by snubber 2.

The middle part 3.2 of existing exhaust valve plate 3 is the long-pending cuboid of uniform section, when the aperture of exhaust valve plate 3 big more, be that the rising of exhaust valve plate 3 is when big highly more, exhaust valve plate 3 is because the elastic force that self elasticity produced is just big more, this elastic force shows as the downforce of exhaust valve plate 3, show that directly exhaust resistance increases, this obviously is irrational.

The model utility content

The purpose of this utility model aims to provide a kind of simple and reasonable, flexible operation, fabricating cost is low, exhaust resistance is little, applied widely rotary compressor, to overcome deficiency of the prior art.

A kind of rotary compressor by this purpose design, be provided with cylinder in the housing, cylinder is provided with main bearing, main bearing is provided with the exhaust port that communicates with the cylinder compression chamber, the tail end of exhaust valve plate is provided with positioning hole, rivet is fixed on snubber and exhaust valve plate on the valve seat of main bearing after passing snubber and riveted holes, the first end cap of exhaust valve plate is pressed on the exhaust port, its structure characteristic be the area of cross section at middle part of exhaust valve plate along the line generation gradual change between the center of the center of riveted holes and exhaust port, more little from the area of the near more then cross section at middle part of exhaust port.

The width of the cross section at the middle part of described exhaust valve plate is constant, and the thickness of the cross section at exhaust valve plate middle part is along the line generation gradual change between the center of the center of riveted holes and exhaust port, and is more little from the near more then thickness of exhaust port.

The middle part of described exhaust valve plate is provided with the wedge slot of arranging along the line between the center of the center of riveted holes and exhaust port, and this wedge slot is little towards an end of riveted holes, and wedge slot is big towards the other end of exhaust port.

The middle part of described exhaust valve plate is wedge shape, and this middle part is big towards an end of riveted holes, and the middle part is little towards the other end of exhaust port.

The utility model is by the area of the cross section at the middle part of change exhaust valve plate, make the area of this cross section along the line generation gradual change between the center of the center of riveted holes and exhaust port, area from the near more then cross section at middle part of exhaust port is more little, to weaken the elastic force that is produced in the elevation process of exhaust valve plate when the exhaust, thereby reduce exhaust resistance, improve the efficiency of compressor.

The material of the exhaust valve plate in the utility model can be the strip material of routine, also can be engineering plastics, and it has simple and reasonable, flexible operation, fabricating cost is low, exhaust resistance is little, advantage of wide range of application.

Description of drawings

Fig. 1 is existing main bearing broken section structural representation.

Fig. 2 looks the structure for amplifying schematic representation for the master of exhaust valve plate.

Fig. 3 is that A-A among Fig. 2 is to the sectional structure schematic representation.

Fig. 4 is the utility model first embodiment's a structural representation.

Fig. 5 is that B-B among Fig. 4 is to the sectional structure schematic representation.

Fig. 6 is the utility model second embodiment's a structural representation.

Fig. 7 is that the C-C of Fig. 6 is to the sectional structure schematic representation.

Fig. 8 is the utility model the 3rd example structure schematic representation.

Fig. 9 is that D-D among Fig. 8 is to the sectional structure schematic representation.

Figure 10 is the graph of relation of the elastic force and the lift height of exhaust valve plate.

Among the figure: 1 is main bearing, and 1.1 is valve seat, and 1.2 is riveted holes, 1.3 be exhaust port, 2 is snubber, 3 is exhaust valve plate, 3.1 be tip, 3.2 be the middle part, 3.3 is tail end, 3.4 is wedge slot, 3.5 be positioning hole, 4 is rivet, and curve I is the elastic force and the lift height relation curve of prior art, curve II be in the utility model elastic force F and the relation curve of lift height h.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

First embodiment

Referring to Fig. 4-Fig. 5 and Figure 10, this rotary compressor, be provided with cylinder in the housing, cylinder is provided with main bearing 1, main bearing 1 is provided with the exhaust port 1.3 that communicates with the cylinder compression chamber, the tail end 3.3 of exhaust valve plate 3 is provided with positioning hole 3.5, rivet 4 is fixed on snubber 2 and exhaust valve plate 3 on the valve seat 1.1 of main bearing 1 after passing snubber 2 and riveted holes 1.2, tip 3.1 lids of exhaust valve plate 3 are pressed on the exhaust port 1.3, the area of the cross section at the middle part 3.2 of exhaust valve plate 3 is along the line generation gradual change between the center of the center of riveted holes 1.2 and exhaust port 1.3, and is more little from the area of the near more then cross section at middle part 3.2 of exhaust port 1.3.

In the present embodiment, the middle part 3.2 of exhaust valve plate 3 is provided with the wedge slot of arranging along the line between the center of the center of riveted holes 1.2 and exhaust port 1.3 3.4, this wedge slot 3.4 is little towards an end of riveted holes 1.2, and wedge slot 3.4 is big towards the other end of exhaust port 1.3.

From Figure 10, can obviously find out, when obtaining identical lift height h1, the elastic force F2 of the elastic force F1 of curve I correspondence＞curve II correspondence.

Second embodiment

Referring to Fig. 6-Fig. 7 and Figure 10, in the present embodiment, the width of the cross section at the middle part 3.2 of exhaust valve plate 3 is constant, the thickness of the cross section at exhaust valve plate 3 middle parts 3.2 is along the line generation gradual change between the center of the center of riveted holes 1.2 and exhaust port 1.3, and is more little from the near more then thickness of exhaust port 1.3.

All the other are not stated part and see first embodiment, no longer repeat.

The 3rd embodiment

Referring to Fig. 8-Figure 10, in the present embodiment, the middle part 3.2 of exhaust valve plate 3 is wedge shape, and this middle part 3.2 is big towards an end of riveted holes 1.2, and middle part 3.2 is little towards the other end of exhaust port 1.3.

Technological scheme in the present embodiment both can be used separately, also can be used in combination with the technological scheme among first embodiment.

All the other are not stated part and see first embodiment, no longer repeat.

Claims

1. rotary compressor, be provided with cylinder in the housing, cylinder is provided with main bearing (1), main bearing (1) is provided with the exhaust port (1.3) that communicates with the cylinder compression chamber, the tail end (3.3) of exhaust valve plate (3) is provided with positioning hole (3.5), rivet (4) is fixed on snubber (2) and exhaust valve plate (3) on the valve seat (1.1) of main bearing (1) after passing snubber (2) and riveted holes (1.2), tip (3.1) lid of exhaust valve plate (3) is pressed on the exhaust port (1.3), the area of cross section at middle part (3.2) that it is characterized in that exhaust valve plate (3) is along the line generation gradual change between the center of the center of riveted holes (1.2) and exhaust port (1.3), and is more little from the area of the near more then cross section at middle part (3.2) of exhaust port (1.3).

2. rotary compressor according to claim 1, the width of cross section at middle part (3.2) that it is characterized in that described exhaust valve plate (3) is constant, the thickness of the cross section at exhaust valve plate (3) middle part (3.2) is along the line generation gradual change between the center of the center of riveted holes (1.2) and exhaust port (1.3), and is more little from the near more then thickness of exhaust port (1.3).

3. rotary compressor according to claim 1, the middle part (3.2) that it is characterized in that described exhaust valve plate (3) is provided with the wedge slot of arranging along the line between the center of the center of riveted holes (1.2) and exhaust port (1.3) (3.4), this wedge slot (3.4) is little towards an end of riveted holes (1.2), and wedge slot (3.4) is big towards the other end of exhaust port (1.3).

4. according to claim 1 or 3 described rotary compressors, it is characterized in that the middle part (3.2) of described exhaust valve plate (3) is wedge shape, this middle part (3.2) are big towards an end of riveted holes (1.2), and middle part (3.2) are little towards the other end of exhaust port (1.3).