JPH0484789U

JPH0484789U -

Info

Publication number: JPH0484789U
Application number: JP12884690U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-23
Anticipated expiration: 2005-11-30
Also published as: JP2508895Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る気体圧縮機の縦断面図、
第２図は第１図に示す−線断面図、第３図は
駆動ピストンと油圧制御部の動作を示す説明図、
第４図は従来の気体圧縮機の縦断面図、第５図は
従来の駆動ピストンと油圧制御部の動作を示す説
明図である。２……フロントサイドブロツク、６……圧縮機
本体、７……制御プレート、８……油溜まり、９
……ケーシング、１０……吸入室、１１……フロ
ントヘツド、１２……キヤツプ、１４……開口、
１５……駆動ピストン、１６ａ，１６ｂ……油流
路、１７……駆動ピン、２０……チヤンバ、２１
……ベロース、２４……ボール弁、２６……圧力
制御室。 FIG. 1 is a longitudinal cross-sectional view of a gas compressor according to the present invention;
FIG. 2 is a sectional view taken along the line shown in FIG. 1, FIG. 3 is an explanatory diagram showing the operation of the drive piston and the hydraulic control section,
FIG. 4 is a longitudinal sectional view of a conventional gas compressor, and FIG. 5 is an explanatory diagram showing the operation of a conventional drive piston and hydraulic control section. 2... Front side block, 6... Compressor body, 7... Control plate, 8... Oil reservoir, 9
...Casing, 10...Suction chamber, 11...Front head, 12...Cap, 14...Opening,
15... Drive piston, 16a, 16b... Oil flow path, 17... Drive pin, 20... Chamber, 21
... bellows, 24 ... ball valve, 26 ... pressure control chamber.

Claims

[Claims for Utility Model Registration] A compressor body, a nearly disk-shaped control plate rotatable within a predetermined angle on the inner surface of a front side block forming the compressor body, and a In a gas compressor, the gas compressor is equipped with a one-end open type casing that surrounds and forms an oil reservoir at the rear, and a front head that is attached to the open end surface of the casing and forms a suction chamber on the inner surface, wherein: An opening is bored in the suction chamber, one end faces the suction chamber, and the other end is sealed with a cap. a cylindrical drive piston that is constantly urged downward by a force means; a pressure control chamber formed between the lower end of the drive piston and the cap and to which hydraulic pressure is supplied from the oil reservoir; a linking means provided and linked to the drive piston via a drive pin; an expandable element that is housed in a chamber formed in the drive piston and expands and contracts in response to the suction pressure of the suction chamber; Provided on the movable end side of the expander,
A gas compressor comprising: a ball valve that is biased in a direction that always closes the lower oil flow path.