CN2166260Y

CN2166260Y - Rotary compressor

Info

Publication number: CN2166260Y
Application number: CN 93209166
Authority: CN
Inventors: 王大然; 李鲁伯
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-07
Filing date: 1993-04-07
Publication date: 1994-05-25
Anticipated expiration: 2003-04-07

Abstract

The utility model relates to a rotary compressor, wherein, a slide plate is fixed; the shape of a piston is C font; a notch on the piston is clamped on both sides of the slide plate; the notch and both sides of the slide plate are plane or circular arc or mutual conjugated curved surface. A lateral gap compensation device can be set. When an eccentric shaft rotates, the circumference of the piston rolls along a cylinder wall and the notch of the piston glides up and down along the two sides of the slide plate. The utility model has the advantages of less moving parts, short seal length, few frictional loss, high efficiency and energy saving.

Description

Rotary compressor

The utility model relates to the compressor with rolling rotor of a kind of rotary compressor, particularly a kind of lateral seal.

Figure (1) and figure (2) are present compressor with rolling rotor structural drawing in field extensive uses such as refrigerator, air-conditionings.When eccentric shaft (3) rotates around garden heart O, rolling piston (2) slides along inboard wall of cylinder block, and the slide plate end is pressed in rolling piston (2) garden on week under hydrodynamic pressure and spring force effect, form sealing strip.The working room is divided into suction chamber (11) and exhaust chamber (12) two-part.Gas enters from suction port (4), compress through piston (2), pressurized gas are from relief opening (7), outlet valve (14) is discharged, reciprocatingly slide at a high speed in cylinder body by the what slide plate, all have the gap between slide plate and rolling piston (2), cylinder body and the front and rear cover plate, the high pressure gas leakage place is more, and volumetric efficiency is difficult for improving.Moreover the high speed to-and-fro motion of relative cylinder body of slide plate and two cover plates, the mechanical friction loss is bigger, vibrates also more serious.Phenomenons such as stuck in the cylinder body groove, the fracture of slide plate, slide plate and piston disengagement also happen occasionally in actual the use, influence the working life and the functional reliability of compressor.

In order to improve the performance of above-mentioned compressor, the rotary compressor of a kind of lateral seal of the present utility model.Its structural feature is that slide plate maintains static, design has a breach on the rolling piston, become the C font, the centripetal moment of the big what twice of notch depth, breach is stuck in fixedly slide plate both sides, utilizes the special shape at slide plate bi-side or piston breach two-port place, also can utilize additional sideshake compensation device, C type piston breach bi-side are contacted with slide plate bi-side conjugation, form sealing strip.C type piston inner hole is enclosed within on the eccentric shaft, and when eccentric shaft rotated, piston garden week slided along inboard wall of cylinder block, and the breach two-port is along fixedly slide plate both sides zero-clearance slip up and down.Guarantee the sealing in hyperbaric chamber.

The utility model is compared with the compressor with rolling rotor of prior art, maintain static by the what slide plate, eliminated the gap at slide plate and cylinder body and two side cover plate places, reduced the loss of gas leakage and mechanical friction, improved volumetric efficiency and mechanical efficiency, thus energy saving.Simultaneously simple in structure, can eliminate the unreliable factor in the caused noise of vane motion, vibration and the running.

Be described in detail following model utility embodiment's structure characteristic below in conjunction with accompanying drawing.

Accompanying drawing (1) is the rotation compressor with rolling rotor of prior art.

Accompanying drawing (2) is the rotation compressor with rolling rotor I-I sectional drawing of prior art.

Accompanying drawing (3) is one of embodiment of the utility model rotary compressor.

Accompanying drawing (4) be the utility model rotary compressor embodiment two.

Accompanying drawing (5) be the utility model rotary compressor embodiment three.

Accompanying drawing (6) be the utility model rotary compressor embodiment four.

Figure (3) is one of embodiment of the present utility model.

Rolling piston (2) becomes the C font, and inner hole sleeve is on eccentric shaft (3).(16), (17) of piston (2) indentation, there are special variable curvature radius garden arcs.It is the envelope surface on flat shape plane, slide plate both sides.C type piston breach bi-side and slide plate bi-side also can be the conjugate surfaces of envelope each other.Slide plate (6) fixing with cylinder body (1) on the groove drive fit do not have the gap.Slide plate (6) and cylinder body (1) are contour, also do not have the gap with front and rear cover plate.When eccentric shaft (3) rotated, piston (2) circumference rolled along inboard wall of cylinder block, slided along inwall in its contacting point.C type piston (2) breach two ends reducing garden arcs (16), (17) edge fixedly contact of slide plate (6) bi-side zero-clearance slide up and down, and form sealing strip, thereby the gas that suction port (4) is sucked are discharged from outlet valve (14) after overcompression.Locate for 180 ° with rolling piston breach center, be processed with compensating groove and make C type piston center of gravity remain on heart O place, garden.

Figure (4) is the utility model embodiment's two.

C type piston (2) indentation, there bi-side (16), (17) are the plane of 2B for spacing parallel to each other, and fixedly slide plate (6) top (15), (18) are the garden cambered surface of radius B.During piston (2) motion, the garden cambered surface (15) of slide plate (6), (18) and piston (2) breach bi-side are tangent, form sealing strip.Slide plate (6) and piston (2) process through special processing with high-abrasive material.

Figure (5) is the utility model embodiment's three.

It adopts little slide plate to make rocker compensating gear, in order to remedy the gap that is produced by what slide plate (6) side and the wearing and tearing of C type piston (2) contacting point, two end part, adopts little slide plate rocker compensating gear.Open a groove (23) at C type piston (2) exhaust side (or air inlet side), compensation little slide plate (21) and spring (20) are housed in the groove (23).Spring (20) is pressed in little slide plate (21) on the fixing plane slide plate (6), forms sealing strip.After the long-term operation, the fixing gap that produces of slide plate (6) and C type piston (2) end sides contacting point wearing and tearing, (21 in the flexible down elimination of spring (20) effect gap, and the high pressure side sealing is guaranteed by the little slide plate of what.

Figure (6) is the utility model embodiment's four.

It adopts sheet spring rocker compensating gear.Fixedly adding blocks of spring (22) by air inlet side (or exhaust side) by the slide plate (6).Plate-like spring (22) and fixedly groove (9), (10) of slide plate (6) surface and cylinder body (1) closely cooperate, guarantee sealing.Reducing garden arc (16), (17) that C type piston (2) is gone up the breach two ends are stuck in the sheet type spring (22) and the fixing both sides of slide plate, the power that the spring bending of sheet type produces is pressed in slide plate (6) side with the convex arc (17) of C type piston breach one end, forms sealing strip.

Claims

1, a kind of rotary compressor, it is made up of front and rear cover plate, the cylinder body of bringing relief opening into, slide plate, rolling piston and electric motor driven eccentric shaft, it is characterized in that:

A, slide plate maintain static in cylinder body, and do not have the gap between the cylinder body, front and rear cover plate,

B, rolling piston are processed with a breach, become the C font, be enclosed within on the eccentric garden of eccentric shaft,

The breach of c, C font rolling piston is stuck in fixedly slide plate bi-side,

D, rolling piston breach and slide plate bi-side can be plane, garden arc or special curved surface,

When e, eccentric shaft rotation, rolling piston is along side roll in the cylinder body, slides along the slide plate bi-side in piston breach both sides, forms suction chamber and exhaust chamber between rolling piston and cylinder body, the slide plate, finishes the process of fluid suction, compression and discharge.

2, rotary compressor as claimed in claim 1, its slide plate bi-side are planes, maintain static, and rolling piston becomes the C font, and piston breach two end part are the slide plate planar envelope portion, also can be special variable curvature radius garden arcs.

3, rotary compressor as claimed in claim 1, its rolling piston becomes the C font, piston breach bi-side are parallel planes, the slide plate underpart is the garden arc, C type piston two planes are stuck in fixedly slide plate garden arc both sides, during piston motion, breach two side planes contact zero-clearance with garden arc on the fixing slide plate and slide.

4, rotary compressor as claimed in claim 1, its C type piston breach bi-side and fixedly the slide plate bi-side are conjugate surfaces of envelope each other.

5, rotary compressor as claimed in claim 1, open a groove at the rolling piston breach by air inlet side (or exhaust side), settle a little slide plate in the groove, several little springs are arranged behind the slide plate, the slide plate head is the garden arc, under spring action with fixing slide plate contacts side surfaces, the gap that causes by the what wearing and tearing of compensation automatically.

6, rotary compressor as claimed in claim 1, fixedly slide plate is settled blocks of spring by air inlet or exhaust one side, flat spring withstands on C type piston breach one end cambered surface, make the other end cambered surface and fixedly the slide plate side plane press, automatically compensation guarantees sealing by the gap that the what wearing and tearing cause.

7, rotary compressor as claimed in claim 1 is processed with compensating groove on its C type piston bi-side, and center of gravity remains on the piston garden in the heart.