CN201991772U

CN201991772U - Rotary compressor

Info

Publication number: CN201991772U
Application number: CN2011200489077U
Authority: CN
Inventors: 吴延平
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2011-09-28
Anticipated expiration: 2021-02-28

Abstract

The utility model relates to a rotary compressor, which comprises a casing and a compression component in the casing. The compression component comprises an air cylinder, a rolling piston and a slider, wherein the air cylinder is provided with an air suction hole, an air exhaust hole and a slider groove, the slider is arranged in the slider groove and capable of reciprocating in the slider groove, the head of the slider contacts with the rolling piston so that the inside of the air cylinder is divided into an air suction cavity and an air exhaust cavity, the air suction hole is communicated with the air suction cavity, and the air exhaust hole is communicated with the air exhaust cavity. The rotary compressor is characterized in that the slider groove is arranged obliquely, the outer tail of the slider groove is inclined to the air suction hole of the air cylinder, an opening at the inner end of the slider groove is inclined to the air exhaust hole, and the opening of the slider groove deviates from the center of the cylinder. Angle of positive pressure of the rolling piston under different rotation angles is changed effectively and the positive pressure of the rolling piston is applied onto the inner end of the slider, so that lateral component force stressed on the inner end of the slider is reduced, friction force between the slider and the slider groove is reduced finally and power consumption of the compressor is decreased. Above all, the rotary compressor is not only simple in structure but low in cost and better in effect.

Description

A kind of rotary compressor

Technical field

The utility model relates to a kind of rotary compressor, and particularly a kind of rolling rotor rotary compressor belongs to the improvement technology of the compression assembly structure of rotary compressor.

Background technique

Fig. 1-Fig. 2 is the press part structural drawing of the rotary compressor of prior art, comprise cylinder 2, rolling piston 3, slide plate 4, major-minor bearing, bent axle composition compression member, motor comes the drive compression component movement by connecting bent axle, piston 3 is installed in the cylinder 2, cylinder block is provided with vane slot 23, device has the slide plate 4 that can move back and forth in the vane slot, contacts with the head of slide plate 4 by rolling piston 3 cylinder interior is divided into air aspiration cavity and exhaust cavity.

During compressor operation, rolling piston makes air aspiration cavity and exhaust cavity have pressure difference, cause slide plate 4 discontinuity, just there is interaction force between slide plate 4 and vane slot 23, the rolling piston 3, as shown in Figure 3, contact force Fn between slide plate 4 and the rolling piston 3 and frictional force Ft, directed force F r1, Fr2 between slide plate 4 and the vane slot 23 and frictional force fr1, fr2, the spring force Fk of slide plate 4, the inertial force Fv of slide plate 4, slide plate 4 bi-side gas differential pressure power Fh and slide plate 4 both ends of the surface gas differential pressure power Fc.

Because the existence of above-mentioned frictional force fr1, fr2 makes the easy stressed abrasion in side of slide plate 4, cause consumption of compressor to increase, schematic representation when forwarding 200 ° to for existing rotary compressor rolling piston as Fig. 7, this moment, θ was 2＜90 °, the cross component force of Fn is identical with Fh, can increase the positive pressure Fr1+Fr2 of vane slot to slide plate.

According to power and torque equilibrium equation

Fr1-Fh-Fr2-Fn*sinα-Ft*cosα=0——(1)

Fn*cosα+Ft*sinα+Fv-(Fk+Fc+fr1+fr2)=0——(2)

Fr1*(h2-h1)-(Fh+Fn*sinα+Ft*cosα)*h2=0——(3)

As can be known,, reduce the α angle and can reduce Fn cross component force Fn*sin α by adjusting the position of vane slot, thus the size of change positive pressure Fr1+Fr2, and then reduce friction fr1 and fr2, finally reach the effect that reduces the compressor power consumption.

Summary of the invention

The purpose of this utility model is to consider the problems referred to above and a kind of simple in structure, rotary compressor that friction power loss is little, applied widely is provided, to overcome deficiency of the prior art.

The technical solution of the utility model is: a kind of rotary compressor, comprise housing and the compression assembly that sets within it, wherein compression assembly comprises cylinder, rolling piston and slide plate, cylinder block is provided with suction port, exhaust port and vane slot, sliding blade apparatus is also to-and-fro motion within it in vane slot, the head of slide plate contacts with rolling piston cylinder interior is divided into air aspiration cavity and exhaust cavity, suction port is communicated with air aspiration cavity, exhaust port is communicated with exhaust cavity, it is characterized in that described vane slot is obliquely installed, its outside afterbody is oblique to the inclination of cylinder suction port, and interior end opening is oblique to the exhaust port inclination, and the opening direction of vane slot is not towards the center of cylinder.

The structure of described vane slot is that the intersection point O point with vane slot center line and cylinder inner radial wall is that fulcrum forms to the suction port sideway swivel.

The central point of the arc surface of the inner termination of described slide plate is M, if the coordinate that M is ordered is (a, b), the slide plate length overall is L, then a ²+ b ²＞L/2.

The central point M of the arc surface of the inner termination of described slide plate is arranged near on cylinder vent one side and the straight line F parallel with the center line N of slide plate, and during to-and-fro motion, the central point M of the arc surface of its inner termination is along straight line F displacement in vane slot for slide plate.

The utility model adopts with vane slot to the suction port inclination tiltedly and the asymmetric structure of slide plate inner termination arc surface, changed the angle that rolling piston under each corner acts on the positive pressure on the slide plate inner termination effectively, thereby reduced the cross component force of bearing on the slide plate inner termination, finally reduced the frictional force between slide plate and the vane slot, reached the effect that reduces the compressor power consumption, not only reasonable in design, simple in structure, and with low cost, effect is fine.

Description of drawings

Fig. 1 is the plan view of existing rotary compressor.

Fig. 2 is the compression assembly plan view of existing rotary compressor.

Fig. 3 is the force analysis figure of existing rotary compressor slide plate.

Fig. 4 is a compression assembly plan view of the present utility model.

Fig. 5 is a slide plate schematic representation of the present utility model.

Fig. 6 is a slide plate tip of the present utility model center of arc position view.

Fig. 7 is Fn under existing 200 ° of corners of rotary compressor and the angle schematic representation of Fh.

Fig. 8 is Fn under 200 ° of corners of the utility model rotary compressor and the angle schematic representation of Fh.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 4, the utility model rotary compressor, comprise housing 1 and the compression assembly that sets within it, wherein compression assembly comprises cylinder 2, rolling piston 3 and slide plate 4, cylinder block is provided with suction port 21, exhaust port 22 and vane slot 23, the also to-and-fro motion within it in vane slot 23 of slide plate 4 devices, the head of slide plate 4 contacts with rolling piston 3 cylinder interior is divided into air aspiration cavity and exhaust cavity, suction port 21 is communicated with air aspiration cavity, exhaust port 22 is communicated with exhaust cavity, and described vane slot 23 is obliquely installed, and its outside afterbody is oblique to 21 inclinations of cylinder suction port, interior end opening is oblique to exhaust port 22 inclinations, and the opening direction of vane slot 23 is not towards the center of cylinder 2.

The structure of described vane slot 23 is that the intersection point O point with vane slot center line and cylinder inner radial wall is that fulcrum forms to suction port 21 sideway swivels.

Shown in Fig. 5,6, the central point of the arc surface of the inner termination of described slide plate 4 is M, if the coordinate that M is ordered is (a, b), the slide plate length overall is L, then a ²+ b ²＞L/2.

The central point M of the arc surface of the inner termination of described slide plate 4 is arranged near on cylinder vent 22 1 sides and the straight line F parallel with the center line N of slide plate, and during to-and-fro motion, the central point M of the arc surface of its inner termination is along straight line F displacement in vane slot 23 for slide plate 4.

As shown in Figure 8, compared with prior art, in the utility model by to the suction port inclination tiltedly and the asymmetric structure of slide plate inner termination arc surface with vane slot, changed the angle that rolling piston under each corner acts on the positive pressure on the slide plate inner termination effectively, thereby reduced the cross component force of bearing on the slide plate inner termination, simultaneously the direction of this positive pressure towards exhaust side, as Fig. 8, for piston forwards 200 ° of schematic representation at present to, this moment, θ was 2＞90 °, and the cross component force of Fn is opposite with Fh, can offset a part of gas force Fh, finally reduced the frictional force between slide plate and the vane slot, reached the effect that reduces the compressor power consumption, not only reasonable in design, simple in structure, and with low cost, effect is fine.

Claims

1. rotary compressor, comprise housing (1) and the compression assembly that sets within it, wherein compression assembly comprises cylinder (2), rolling piston (3) and slide plate (4), cylinder block is provided with suction port (21), exhaust port (22) and vane slot (23), the also to-and-fro motion within it in vane slot (23) of slide plate (4) device, the head of slide plate (4) contacts with rolling piston (3) cylinder interior is divided into air aspiration cavity and exhaust cavity, suction port (21) is communicated with air aspiration cavity, exhaust port (22) is communicated with exhaust cavity, it is characterized in that described vane slot (23) is obliquely installed, its outside afterbody is oblique to cylinder suction port (21) inclination, interior end opening is oblique to exhaust port (22) inclination, and the opening direction of vane slot (23) is not towards the center of cylinder (2).

2. rotary compressor according to claim 1, the structure that it is characterized in that described vane slot (23) are that the intersection point O point with vane slot center line and cylinder inner radial wall is that fulcrum forms to suction port (21) sideway swivel.

3, rotary compressor according to claim 1 is characterized in that the central point of arc surface of the inner termination of described slide plate (4) is M, if the coordinate that M is ordered is (a, b), the slide plate length overall is L, then a ²+ b ²＞L/2.

4, according to each described rotary compressor of claim 1 to 3, the central point M of arc surface that it is characterized in that the inner termination of described slide plate (4) is arranged near on cylinder vent (22) one sides and the straight line F parallel with the center line N of slide plate, during to-and-fro motion, the central point M of the arc surface of its inner termination is along straight line F displacement in vane slot (23) for slide plate (4).