CN202250860U

CN202250860U - Rotary compressor

Info

Publication number: CN202250860U
Application number: CN2011203396021U
Authority: CN
Inventors: 李华明
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2012-05-30
Anticipated expiration: 2021-09-09

Abstract

The utility model relates to a rotary compressor. A motor and a compression mechanism are arranged in a sealed shell, the motor comprises a stator and a rotor, the stator is fixed on the inner wall of the shell, and the rotor is fixed on a crankshaft in the compression mechanism; and the compression mechanism comprises a cylinder, a piston and a sliding plate, the piston is sleeved outside the crankshaft and rotates in the cylinder, and the cylinder is provided with a sliding plate slot connected with the sliding plate in a sliding way. The rotary compressor is characterized in that the front end of the sliding plate is provided with a roller mounting slot, and the section of the roller mounting slot is shaped like a large semicircle; and a roller is arranged in the roller mounting slot and is made of a high-carbon/chromium bearing steel material with the Brinell hardness being HBW179-217. Since the front end of the sliding plate contacted with the periphery of the piston is provided with the roller mounting slot and the roller, the sliding friction between the front end of the sliding plate and the peripheral surface of the piston can be changed into rolling friction, the frictional coefficient can be reduced, the power consumption of the compressor can be reduced, and the service life of the compressor can be prolonged. The rotary compressor has the advantages of simple and reasonable structure, low manufacturing cost, long service life and wide scope of application.

Description

Rotary compressor

Technical field

The utility model relates to a kind of rotary compressor.

Background technique

Existing rotary compressor, as shown in Figure 1, comprise the motor mechanism and the compressing mechanism that are provided with in the housing of sealing; Motor mechanism comprises stator and rotor, and stator is fixed on the inwall of housing, and rotor is fixed on the bent axle in the compressing mechanism; Compressing mechanism also comprises cylinder, is enclosed within the piston that bent axle is outer and in cylinder, rotate, and vane slot is arranged on the cylinder; The slide plate that in vane slot, moves back and forth, the head of slide plate and piston periphery are owing to be sliding friction, friction factor is bigger; The slide plate wearing and tearing are bigger, and then influence the efficiency of compressor.To this; Engineers and technicians improve, and handle as carry out the wear resistance composite coating at the slide plate outer surface, to increase the wear resistance of slide plate; Or the slide plate and the way of contact of vane slot changed into rolling contact; Disclose a kind of compressor like Chinese patent document publication number CN2931862Y on August 8th, 2007, this compressor comprises slide plate and vane slot, through at least one needle roller is set in vane slot.It is said, can reduce the wearing and tearing between slide plate and the vane slot internal surface, and then reduce the loss of compressor power input, improve the reliability of compressor.But effect is still not ideal.

The model utility content

The purpose of the utility model aim to provide a kind of simple and reasonable, fabricating cost is low, long service life, rotary compressor applied widely, reduces slide plate head mechanical friction power consumption penalty, to overcome deficiency of the prior art.

A kind of rotary compressor by this purpose design is provided with motor and compressing mechanism in the housing of sealing, motor comprises stator and rotor, and stator is fixed on the inwall of housing, and rotor is fixed on the bent axle in the compressing mechanism; Compressing mechanism also comprises cylinder, piston and slide plate, and piston sleeve rotates outside bent axle and in cylinder, and cylinder is provided with the vane slot that is slidingly connected with slide plate; Its structure characteristic is that the tip of slide plate is provided with the roller mounting groove, and roller mounting groove cross section is a large semi-circular; Be provided with roller in the roller mounting groove; Roller is that the interval high-carbon-chromium bearing steel material of Brinell hardness HBW179-217 is processed.

Following roller＞the slide plate of the hardness relation of said roller, slide plate, piston＞piston.

Said roller surface is provided with physical vapor deposition layer (PVD), chemical vapor deposition layer (CVD) or nitriding layer.Said roller surface is provided with DLC rete (DLC).

The utility model makes the sliding friction of slide plate tip and piston outer surface become rolling friction through at the slide plate tip place that contacts with the piston periphery roller mounting groove and roller being set, and reduces friction factor, improves the compressor power consumption, prolongs compressor working life.It has simple and reasonable, fabricating cost is low, long service life, reliability high, advantage of wide range of application.

Description of drawings

Fig. 1 is the broken section structural representation of existing rotary compressor.

Fig. 2 is existing rotary compressor compressing mechanism structural representation.

Fig. 3 is the utility model one example structure schematic representation.

Fig. 4 is a slide vane structure schematic representation among Fig. 3.

Among the figure: housing 1, stator 2, rotor 3, bent axle 4, cylinder 5, vane slot 5.1, piston 6, slide plate 7, mounting groove 7.1, roller 8.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further description.

Referring to Fig. 1-3, this rotary compressor is provided with motor and compressing mechanism in the housing 1 of sealing, and motor comprises stator 2 and rotor 3, and stator 2 is fixed on the inwall of housing 1, and rotor 3 is fixed on the bent axle 4 in the compressing mechanism; Compressing mechanism also comprises cylinder 5, piston 6 and slide plate 7, and piston 6 is enclosed within bent axle 4 outer and rotations in cylinder 5, and cylinder 5 is provided with the vane slot 5.1 that is slidingly connected with slide plate 7; The tip of slide plate 7 is provided with roller mounting groove 7.1, is provided with roller 8 in the roller mounting groove 7.1.Roller mounting groove 7.1 cross sections are large semi-circular.Roller 8 is processed for the interval high-carbon-chromium bearing steel material of Brinell hardness HBW179-217.It is to let the sliding friction on slide plate 7 tips and piston 6 surfaces become rolling friction that roller 8 purposes are set; Improve the compressor power consumption; The mounting groove cross section is circular deviates from from mounting groove for big semicircle then can effectively prevent roller 8; The hardness of roller 8 and material requirements are to have only to satisfy long-time running failure damage and the wearing and tearing that this designing requirement just can prevent roller 8, obtain better reliability.The following roller 8＞slide plate of the hardness relation 7＞piston 6 of roller 8, slide plate 7, piston 6.Under this design, could guarantee to have long-time running reliability preferably with piston 6 with roller 8 adjacent slide plates 7.

Roller 8 carries out surface treatment, and the surface-treated mode is one or more in physical vapor deposition PVD, chemical vapor deposition CVD or the nitriding.So requirement can let the power consumption penalty of roller 8 and reliability obtain better effect.Roller 8 carries out surface treatment, and the surface-treated mode is physical vapor deposition PVD, and processing rete DLC is the DLC rete.So adopt DLC film layer effect best.

Claims

1. rotary compressor, the housing of sealing is provided with motor and compressing mechanism in (1), and motor comprises stator (2) and rotor (3), and stator (2) is fixed on the inwall of housing (1), and rotor (3) is fixed on the bent axle (4) in the compressing mechanism; Compressing mechanism also comprises cylinder (5), piston (6) and slide plate (7), and piston (6) is enclosed within the outer and rotation in cylinder (5) of bent axle (4), and cylinder (5) is provided with the vane slot (5.1) that is slidingly connected with slide plate (7); The tip that it is characterized in that said slide plate (7) is provided with roller mounting groove (7.1), and roller mounting groove (7.1) cross section is a large semi-circular; Be provided with roller (8) in the roller mounting groove (7.1); Roller (8) is processed for the interval high-carbon-chromium bearing steel material of Brinell hardness HBW179-217.

2. the rotary compressor of stating according to claim 1 is characterized in that the following roller of hardness relation (8)＞slide plate (the 7)＞piston (6) of roller (8), slide plate (7), piston (6).

3. rotary compressor according to claim 1 and 2 is characterized in that said roller (8) surface is provided with physical vapor deposition layer (PVD), chemical vapor deposition layer (CVD) or nitriding layer.

4. rotary compressor according to claim 1 and 2 is characterized in that said roller (8) carries out the surface and is provided with DLC rete (DLC).