CN103850938A

CN103850938A - Air suction and exhaust structure of double-stage compressor

Info

Publication number: CN103850938A
Application number: CN201310712887.2A
Authority: CN
Inventors: 林少坤
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-06-11
Anticipated expiration: 2033-12-20
Also published as: CN103850938B

Abstract

The invention discloses an air suction and exhaust structure of a double-stage compressor. The air suction and exhaust structure comprises a crankshaft, an upper roller, an upper sliding piece, a lower roller, a lower sliding piece, an upper flange, an upper cylinder, a clapboard, a lower cylinder, a lower flange and a lower flange cover plate, wherein the lower flange cover plate is arranged at the lower end of the lower flange, and a lower cylinder exhaust cavity can be formed; an upper eccentric circle and a lower eccentric circle which are arranged on the crankshaft and are respectively matched with the upper roller and the lower roller are arranged at the same side of the center line of the crankshaft in parallel, and the deflection center lines of the upper eccentric circle and the lower eccentric circle are coincided with each other by sharing the same axle center; the upper sliding piece and the lower sliding piece which are respectively arranged on the side walls of the upper cylinder and the lower cylinder and matched with the upper roller and the lower roller are symmetrically distributed at 180 degrees by taking the center line of the crankshaft as a center; an upper sliding groove spring hole and a lower sliding groove spring hole which are respectively arranged on the upper cylinder and the lower cylinder and correspond to the upper sliding piece and the lower sliding piece are symmetrically distributed at 180 degrees by taking the center line of the crankshaft as a center; an air suction hole corresponding to the lower cylinder and an exhaust hole corresponding to the upper cylinder are symmetrically distributed at 180 degrees by taking the center line of the crankshaft as a center; therefore, opposite side symmetric distribution is realized, and a noise source is arranged away, so that high-frequency noise vibration is avoided being superimposed along the same direction, and the noise and the vibration of the compressor are effectively reduced.

Description

The suction and exhaust structure of compound compressor

[technical field]

The present invention relates to compound compressor, relate in particular to the suction and exhaust structure of compound compressor.

[background technique]

Compound compressor generally, by twice compression, has improved compression ratio, is very suitable for the low-temperature heating under high pressure ratio condition, is equally also suitable for the air-conditioning high-temperature refrigeration under high pressure ratio condition.As shown in Figures 1 to 4, general compound compressor comprises, lower cylinder (1a, 2a), bent axle 3a's is upper, lower eccentric circle (30a, 31a) symmetrical 180 ° of distributions, the cylinder vane slot X that upper cylinder 1a is corresponding with lower cylinder 2a and the assembling of spring eye Y homonymy, suction port E and relief opening F are all arranged on same axis, in the course of the work, the air-breathing of upper cylinder 1a is to be provided by lower cylinder 2a exhaust, the intermittence (the 120 degree scope exhausts of only having an appointment) of the air-breathing continuity of upper cylinder 1a (360 degree are all air-breathing) corresponding lower cylinder 2a exhaust, add that compressor rotates fast, general 0.02 second/turn, because suction port and relief opening arrange on same axis, distance is very near, must cause compressor to produce the noise vibration of high frequency time, meanwhile, due to cylinder vane slot X and also homonymy assembling of spring eye Y, the high frequency time noise vibration that further causes compressor to produce superposes in same direction, has further increased compressor noise and vibration.

[summary of the invention]

The invention provides a kind of reduce compressor noise and vibration, reduce the suction and exhaust structure of the compound compressor of Crankshaft Machining cost.

In order to realize foregoing invention object, the technical solution used in the present invention is:

The suction and exhaust structure of compound compressor, comprise bent axle, upper roller, upper slide plate, lower roller, lower slide plate, upper flange, upper cylinder, dividing plate, lower cylinder, lower flange and lower flange cover plate, lower flange cover plate lid is located at the lower end of lower flange and forms lower cylinder exhaust cavity; On described bent axle, be equipped with and the upper and lower roller of upper and lower cylinder inner cavity cooperating, the upper and lower eccentric circle coordinating with upper and lower roller on bent axle be arranged in parallel in center line the same side of bent axle, and the deflection center line concentric of upper and lower eccentric circle overlaps; The upper and lower slide plate coordinating with upper and lower roller on described upper and lower cylinder sidewall is symmetrical 180 ° of distributions centered by crankshaft axis, the above upper hopper chute spring eye of slide plate and the also symmetrical 180 ° of distributions centered by crankshaft axis of the gliding groove spring eye of corresponding lower slide plate on lower cylinder of correspondence on upper cylinder; The corresponding intakeport of lower cylinder and the relief opening of upper cylinder be symmetrical 180 ° of distributions centered by crankshaft axis.

The invention has the beneficial effects as follows:

Upper and lower eccentric circle on bent axle of the present invention adopts and be arranged in parallel in center line the same side of bent axle, and the deflection center line concentric of upper and lower eccentric circle overlaps, the structure of corresponding bent axle, the also symmetrical 180 ° of distributions centered by crankshaft axis of the intakeport of lower cylinder and the relief opening of upper cylinder; Simultaneously, the vane slot of upper and lower slide plate correspondence on upper and lower cylinder sidewall is also with the symmetrical 180 ° of distributions of crankshaft axis, make intakeport and relief opening, upper hopper chute spring eye and gliding groove spring eye all realize heteropleural symmetrical, like this, the compressional vibration moment of the upper and lower cylinder of balance better, make noise source (intakeport, relief opening) distance become far away, effectively reduce noise and the vibration of compressor; Again because the spring moving direction of upper and lower slide plate and correspondence thereof is contrary, (compressor rotates fast to have avoided high frequency time noise vibration that compressor produces, general 0.02 second/turn) in same direction, superpose, reduce further noise and the vibration of compressor, improve the service behaviour of compressor.

In addition, crankshaft eccentric circle homonymy and axis homonymy, upper and lower eccentric circle adopts and be arranged in parallel in center line the same side of bent axle, crank shaft blank and processing request are similar to single eccentric circle, can effectively reduce the rapidoprint of bent axle, blank cost and the processing cost more symmetrical than conventional eccentric circle are low.

[brief description of the drawings]

Fig. 1 is the structure for amplifying schematic diagram of bent axle in prior art;

Fig. 2 is that in prior art, bent axle and upper and lower cylinder, flange and roller assembly relation are analysed and observe enlarged diagram;

Fig. 3 is the plan structure schematic diagram of bent axle and upper and lower cylinder and roller assembly relation in prior art;

Fig. 4 is the sectional structure schematic diagram of Two-stage Compression in prior art;

Fig. 5 is the structure for amplifying schematic diagram of bent axle in the present invention;

Fig. 6 is that in the present invention, bent axle and upper and lower cylinder, flange and roller assembly relation are analysed and observe enlarged diagram;

Fig. 7 is the plan structure schematic diagram of bent axle and upper and lower cylinder and roller assembly relation in invention;

Fig. 8 is the sectional structure schematic diagram of Two-stage Compression in invention.

[embodiment]

The suction and exhaust structure of compound compressor, as shown in Fig. 5 to Fig. 8, comprise bent axle 1, upper roller 2, upper slide plate 3, lower roller 4, lower slide plate 5, upper flange 6, upper cylinder 7, dividing plate 8, lower cylinder 9, lower flange 10 and lower flange cover plate 11, lower flange cover plate 11 lids are located at the lower end of lower flange 10 and form lower cylinder exhaust cavity A, offer the two-stage compression passage (not shown) with the conducting of lower cylinder exhaust cavity on upper cylinder 7, dividing plate 8, lower cylinder 9 and lower flange 10; On bent axle 1, be equipped with the upper and lower roller (2,4) with upper and lower cylinder (7,9) inner chamber cooperating, the upper and lower eccentric circle (20,40) coordinating with upper and lower roller (2,4) on bent axle 1 be arranged in parallel in center line the same side of bent axle 1, and the deflection center line concentric of upper and lower eccentric circle (20,40) overlaps; Wherein, the upper and lower slide plate (3,5) coordinating with upper and lower roller (2,4) on upper and lower cylinder (7,9) sidewall is symmetrical 180 ° of distributions centered by crankshaft axis, the above upper hopper chute spring eye 12 of slide plate 3 and the also symmetrical 180 ° of distributions centered by bent axle 1 center line of the gliding groove spring eye 13 of corresponding lower slide plate 5 on lower cylinder 9 of correspondence on upper cylinder 7; The intakeport 14 of corresponding lower cylinder 9 and the symmetrical 180 ° of distributions centered by crankshaft axis of the relief opening 15 of upper cylinder 7.

Because the upper and lower eccentric circle on bent axle 1 of the present invention (20,40) be arranged in parallel in crankshaft axis the same side, can effectively reduce the rapidoprint of bent axle, reduce the cost of production of bent axle.The structure of corresponding bent axle, the intakeport 14 of lower cylinder 9 and the also symmetrical 180 ° of distributions centered by crankshaft axis of the relief opening 15 of upper cylinder 7; Simultaneously, the vane slot of upper and lower slide plate (3,5) correspondence on upper and lower cylinder (7,9) sidewall is also with the symmetrical 180 ° of distributions of crankshaft axis, make intakeport 14 and relief opening 15, upper hopper chute spring eye 12 and gliding groove spring eye 13 all realize heteropleural symmetrical, like this, the compressional vibration moment of the upper and lower cylinder of balance (7,9) better, make noise source (intakeport, relief opening) distance become far away, effectively reduce noise and the vibration of compressor; Again because the spring moving direction of upper and lower slide plate (3,5) and correspondence thereof is contrary, (compressor rotates fast to have avoided high frequency time noise vibration that compressor produces, general 0.02 second/turn) in same direction, superpose, reduce further noise and the vibration of compressor, improve the service behaviour of compressor.

The above embodiment just, for preferred embodiment of the present invention, not limits practical range of the present invention with this, and the equivalence that all shapes according to the present invention, structure and principle are done changes, and all should be covered by protection scope of the present invention.

Claims

1. the suction and exhaust structure of compound compressor, comprise bent axle, upper roller, upper slide plate, lower roller, lower slide plate, upper flange, upper cylinder, dividing plate, lower cylinder, lower flange and lower flange cover plate, lower flange cover plate lid is located at the lower end of lower flange and forms lower cylinder exhaust cavity; It is characterized in that:

On described bent axle, be equipped with and the upper and lower roller of upper and lower cylinder inner cavity cooperating, the upper and lower eccentric circle coordinating with upper and lower roller on bent axle be arranged in parallel in center line the same side of bent axle, and the deflection center line concentric of upper and lower eccentric circle overlaps;

The upper and lower slide plate coordinating with upper and lower roller on described upper and lower cylinder sidewall is symmetrical 180 ° of distributions centered by crankshaft axis, the above upper hopper chute spring eye of slide plate and the also symmetrical 180 ° of distributions centered by crankshaft axis of the gliding groove spring eye of corresponding lower slide plate on lower cylinder of correspondence on upper cylinder;

The corresponding intakeport of lower cylinder and the relief opening of upper cylinder be symmetrical 180 ° of distributions centered by crankshaft axis.