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Compressor and suction valve structure

a compressor and suction valve technology, applied in the field of compressor valve structure, can solve the problems of suction pressure pulsation, coolant being discharged from a plurality of suction valves is not constant, and the size of the pressure reduction path formed between the suction valve and the valve seat is not constant, so as to achieve the effect of processing easily

Inactive Publication Date: 2006-12-14
CALSONIC KANSEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] Furthermore, when the groove is provided around the suction hole as described in the second related art, a mechanical processing to provide the groove is carried out in high precision on the valve plate. Therefore, it is troublesome to form the pressure reduction path, which results in high manufacturing cost.
[0010] The object of present invention is to provide a compressor that can be processed easily and that has clearances (pressure reduction paths) being formed in a uniform size.

Problems solved by technology

However, when providing the rough surface on the valve seat forms the pressure reduction path, the size of the pressure reduction path formed between the suction valve and the valve seat is not constant.
Therefore, the quantity of the coolant being discharged from a plurality of the suction valve is not uniform, so that there is still a possibility of generating a suction pressure pulsation.
Therefore, it is troublesome to form the pressure reduction path, which results in high manufacturing cost.
When the thin plate is used, a simple plate has a risk of generating collision noise when the suction valve collides against the thin plate.

Method used

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  • Compressor and suction valve structure
  • Compressor and suction valve structure
  • Compressor and suction valve structure

Examples

Experimental program
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Effect test

first embodiment

[0033] In the valve structure of the compressor 1 when the compressor 1 is started in a suspension state, that is, when the swash plate 39 rotates by the rotational drive force of the drive shaft 30 to cause the plurality of pistons 41 to move reciprocally in the cylinder bore 2, the coolant is absorbed from the suction hole 20 when the pistons 41 move to the front housing 5 side within the cylinder bore 2, and the coolant remaining in the suspension state is compressed and is discharged from the discharge hole 21 into the discharge chamber 8 when the pistons 41 move to the rear housing 9 side within the cylinder bore 2.

[0034] According to the valve structure in the present invention, since the predetermined clearance 27 is provided between the valve seat 23 of the suction hole 20 and the opposing part 26 by providing the coating layer 29, the coolant is absorbed into the cylinder bore 2 simultaneously with the starting of the compressor, a difference of the pressure in the suction...

second embodiment

[0038] A second embodiment shown in FIGS. 5A to 5C will be explained next.

[0039] As shown in FIGS. 5A to 5C, in the valve structure of the compressor according to the second embodiment, a convex portion 44 is provided at a predetermined peripheral position of the valve seat 23 of the suction hole 20 of the valve plate 12 as the clearance forming means 28. Based on the convex portion 44 (the clearance forming means 28), the opposing part 26 is separated by a predetermined distance from the opening and the opening edge of the suction hole 20.

[0040] In the second embodiment, a predetermined clearance 45 is provided between the valve seat 23 of the suction hole 20 and the opposing part 26 by the convex portion 44 in a similar manner to that in the first embodiment. Therefore, the coolant is absorbed into the cylinder bore 2 simultaneously with the starting of the compressor, a difference of the pressure in the suction chamber 7 and the pressure in the cylinder bore 2 can be restricted,...

third embodiment

[0042] A third embodiment shown in FIG. 6 will be explained next.

[0043] As shown in FIG. 6, in the valve structure of the compressor according to the third embodiment, a sheet member 60 is disposed between the valve plate main body 19 of the valve plate 12 and the suction valve main body 25 of the suction valve 13, and the sheet member 60 performs as the clearance forming means 28. This sheet member 60 may be formed with an elastic member such as rubber.

[0044] Other structures of this embodiment are similar to those in the first embodiment, and therefore, their explanation will be omitted.

[0045] In the third embodiment, a clearance 27a having the predetermined size L1 is formed by the elastic sheet member 60, the occurrence of noise due to the suction pressure pulsation can be prevented.

[0046] Further, in the third embodiment, the valve plate 12 of the suction valve main body 25 collides against the sheet member 60 and the sheet member 60 absorbs the collision force, when the suc...

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PUM

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Abstract

In a valve structure according to the present invention, a suction valve is formed with a suction valve main body, and an opposing part that is integrally formed on a suction valve main body, and faces a suction hole and a valve seat at the opening edge of the suction hole so as to be able to open and close the suction hole, and clearance forming means, which forms a predetermined clearance between the opposing part and the valve seat by isolating the opposing part from the valve seat by a predetermined distance, is formed on at least one of the valve plate and the suction valve.

Description

TECHNICAL FIELD [0001] The present invention relates to a compressor that compresses coolant gas in a refrigeration cycle of a vehicle air conditioner or the like, and relates, more particularly to a valve structure of the compressor. BACKGROUND ART [0002] A compressor disclosed in Japanese Patent Publication No. 3326909 (first related art) is proposed for the compressor to be used to compress coolant gas. According to the compressor of the first related art, the compressor comprises a cylinder block in which cylinder bores are formed, a crank chamber provided at the front of the cylinder block, and a suction chamber and a discharge chamber provided at the front end of the cylinder block, and a valve provided between the cylinder bore, the suction chamber, and the discharge chamber. The valve further includes a valve plate having a suction hole that communicates between each cylinder bore and the suction chamber, and a discharge hole that communicates between each cylinder bore and ...

Claims

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Application Information

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IPC IPC(8): F04B27/08F04B27/10F04B39/10
CPCF04B27/1009F04B39/1073F04B39/1066F04B39/10F04B27/08
Inventor UEHARA, KATSUMIHIGASHIRA, SHINICHIROOGURA, TOSHIYUKI
Owner CALSONIC KANSEI CORP