CN2528971Y

CN2528971Y - Integral piston with oil-groove on vane

Info

Publication number: CN2528971Y
Application number: CN 01277163
Authority: CN
Inventors: 刘春慧; 杨军; 苏志军; 唐亚兵
Original assignee: Shanghai Hitachi Household Appliance Co Ltd
Current assignee: Shanghai Hitachi Household Appliance Co Ltd
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2003-01-01
Anticipated expiration: 2011-12-28

Abstract

The utility model relates to an integral piston with an oil-groove on a vane, which essentially comprises an integral piston consisting of a vane and a piston. An oil groove or a plurality of oil grooves are arranged on both sides of the vane, the extreme position of the oil groove approaching to the piston is that when the piston is positioned in the dead center of a cylinder, the oil groove is not communicated with a compression cavity and an air suction cavity. When a compressor rotates, lubricating oil enters the oil groove of the vane in the integral piston and has the function of lubricating under the action of pressure difference, thereby, the lubricating action between a sliding block and the vane is improved and the running reliability of the compressor is enhanced, besides, the oil groove on the vane has the function of receiving abrasive dusts, so the secondary abrasion generated by abrasive grain.

Description

The integral piston of band oil groove on a kind of blade

Technical field:

The utility model relates to the swing-rotor type compressor that is applicable to air conditioner, refrigerator and refrigerating machine, refers to the improvement to integral piston in the swing-rotor type compressor especially.

Background technique:

Existing wobble-piston type compressor mainly constitutes (referring to Fig. 1, Fig. 2) by parts such as motor 2, cylinder 7, upper cylinder cover 3, following cylinder cap 5, integral piston 4, slide block 6, eccentric shafts 8.Wherein, upper cylinder cover 3, cylinder 7, piston 4, slide block 6, following cylinder cap 5 form swept volumes.Integral piston 4 is processed into one or is set into one by piston body 41 and blade 42, is set on the eccentric shaft 8, places the piston cavity 71 of cylinder 7; Slide block 6 is made of two semicylinders 61,62, places the slider bore 72 of cylinder 7, and can swing in this slider bore.Motor 2 drives the piston cavity inwall swing of piston 4 along cylinder 7 by eccentric shaft 8, blade 42 on the piston 4 is by the support of slide block 6, in cylinder 7, move reciprocatingly and swing, finish the work cycle of gas suction-compression-discharge, and the volume in the cylinder piston chamber is divided into low pressure (air-breathing) chamber 13 and high pressure (compression) chamber 14.

For preventing gas leakage, the gap between slide block 6 and the blade 42 is very little, so lubricant oil is difficult to enter this gap, often has the defective of insufficient lubrication, causes the wearing and tearing aggravation of slide block 6 and blade 42 sides, has influenced the normal operation of compressor.

Summary of the invention:

In view of the existing problem of said structure, the purpose of this utility model is the integral piston that proposes band oil groove on a kind of blade, and the store oil structure of this oil groove of mat is improved lubricating between slide block and the blade, reduce the wearing and tearing of contact position, to improve the reliability of compressor operating.

The integral piston of band oil groove on the blade of the present utility model, mainly comprise the integral piston of forming by blade and piston body, two sides at described blade position have one or more oil groove, this oil groove near the limit position of piston body one end is, when piston was in lower dead point position in cylinder, this oil groove was not connected with compression chamber and air aspiration cavity.

Advantage of the present utility model is: when compressor operation, vane hole 12 is a high pressure gas pressure, because the pressure of vane hole 12 is higher than the pressure of air aspiration cavity 13, lubricant oil is because the effect of pressure reduction, enter in the oil groove of low pressure surface (near air cavity 13) at blade 42 positions of integral piston 4, and play lubrication.When the pressure of vane hole 12 is higher than the pressure of compression chamber 14, lubricant oil is because the effect of pressure reduction, enter and be stored in the oil groove of high pressure surface (near compression chamber 14) at the blade position 42 of integral piston 4, even when the pressure in the vane hole 12 is lower than the pressure of compression chamber, the lubricant oil that is stored in the groove still can play lubrication, thereby improved the lubrication between slide block 6 and the blade 42, improved the reliability of compressor operating; In addition, the oil groove on the blade holds the effect of abrasive dust in addition, thereby can reduce because the wearing and tearing that abrasive particle engaging friction pair causes.

Description of drawings:

Fig. 1 is the longitudinal sectional view of swing-rotor type compressor;

Fig. 2 is the cross-sectional view of swing-rotor type compresser cylinder part;

Fig. 3 is embodiment's 1 an of the present utility model schematic perspective view;

Fig. 4 is embodiment's 2 an of the present utility model schematic perspective view;

Fig. 5 is embodiment's 3 an of the present utility model schematic perspective view;

Fig. 6 is embodiment's 4 an of the present utility model schematic perspective view.

Embodiment:

Now the utility model is described in further detail in conjunction with several embodiments and accompanying drawing.

The integral piston of band oil groove on a kind of blade of the present utility model, can be referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, mainly comprise an integral piston 4 of forming by blade 42 and piston body 41, two sides at described blade position 42 have one or more oil groove, this oil groove near the limit position of piston body 41 1 ends is, when piston was in lower dead point position in cylinder, this oil groove was not connected with compression chamber and air aspiration cavity.

Embodiment 1 sees Fig. 3, integral piston 4 is made up of blade-section 42 and piston body part 41, have one or more horizontal oil groove 18 in two sides at described blade position 42, this oil groove near the limit position of piston body 41 1 end 18a is, when piston 4 was in lower dead point position in cylinder 7, this oil groove 18 was not connected with compression chamber and air aspiration cavity.

Embodiment 2 sees Fig. 4, has one or more horizontal oil groove 18 in two sides at the blade position 42 of described integral piston 4, has one or more vertical oil groove 19 simultaneously, and described vertical oil groove 19 and described horizontal oil groove 18 intersect perforation.

Embodiment 3 sees Fig. 5, has one or more oblique oil groove 18 in two sides at the blade position 42 of described integral piston 4.

Embodiment 4 sees Fig. 6, has one or more oblique oil groove 18 in two sides at the blade position 42 of described integral piston 4, has one or more vertical oil groove 19 simultaneously, and described vertical oil groove 19 and described oblique oil groove 18 intersect perforation.

Claims

1. the integral piston of band oil groove on the blade, mainly comprise the integral piston of forming by blade and piston body, it is characterized in that having one or more oil groove in two sides at blade position, this oil groove near the limit position of piston one end is, when piston was in lower dead point position in cylinder, this oil groove was not connected with compression chamber and air aspiration cavity.

2. the integral piston of band oil groove on the blade according to claim 1 is characterized in that having one or more horizontal oil groove in two sides at the blade position of this piston.

3. the integral piston of band oil groove on the blade according to claim 1 and 2, two sides that it is characterized in that the blade position of this piston have one or more horizontal oil groove, have one or more vertical oil groove simultaneously, and described vertical oil groove and described horizontal oil groove intersect perforation.

4. the integral piston of band oil groove on the blade according to claim 1 is characterized in that having one or more oblique oil groove in two sides at the blade position of described piston.

5. according to the integral piston of being with oil groove on claim 1 or the 4 described blades, it is characterized in that having one or more oblique oil groove in two sides at the blade position of described piston, have one or more vertical oil groove simultaneously, and described vertical oil groove and described oblique oil groove intersect perforation.