JPH0264778U

JPH0264778U -

Info

Publication number: JPH0264778U
Application number: JP14308788U
Authority: JP
Priority date: 1988-11-01
Filing date: 1988-11-01
Publication date: 1990-05-15
Also published as: JPH0426712Y2

Description

[Brief explanation of the drawing]

第１図、第２図はこの考案に係る気体圧縮機の
要部を示す断面図、第３図は第１図の要部を拡大
した断面図、第４図は気体圧縮機の全体構成を示
す縦断面図、第５図は従来例を示す断面図である
。１０……圧縮機本体、１３……シリンダブロツ
ク、１４……フロントサイドブロツク、１５……
リアサイドブロツク、１７……ベーン、１８……
ロータ、１９……制御プレート、２３……吸入室
、２４……シリンダ室、３４……油溜まり、５０
……油圧制御弁、５１……連通路、５２……チヤ
ンバ、５３……ベローズ、５４……ハウジング部
、５４ａ……弁座、５４ｂ……絞り孔、５５……
弁体、５５ａ……小径段部、５５ｂ……先端、５
６……連通路、５７……ハウジング部、５８……
油路、５９……油圧連通路。 Figures 1 and 2 are cross-sectional views showing the main parts of the gas compressor according to this invention, Figure 3 is an enlarged cross-sectional view of the main parts of Figure 1, and Figure 4 shows the overall configuration of the gas compressor. FIG. 5 is a sectional view showing a conventional example. 10...Compressor main body, 13...Cylinder block, 14...Front side block, 15...
Rear side block, 17... Vane, 18...
Rotor, 19... Control plate, 23... Suction chamber, 24... Cylinder chamber, 34... Oil reservoir, 50
... Hydraulic control valve, 51 ... Communication path, 52 ... Chamber, 53 ... Bellows, 54 ... Housing portion, 54a ... Valve seat, 54b ... Throttle hole, 55 ...
Valve body, 55a... Small diameter stepped portion, 55b... Tip, 5
6...Communication path, 57...Housing part, 58...
Oil passage, 59...Hydraulic communication passage.

Claims

[Claims for Utility Model Registration] 1. A cylinder block with a substantially elliptical inner circumference, front and rear side blocks attached to both sides of the cylinder block, and a cylinder chamber constituted by the cylinder block and both side blocks. a rotor that is rotatably suspended horizontally and has a plurality of vanes that can move forward and backward in the radial direction;
On the inner side of the front side block, there is a nearly disk-shaped control plate that can rotate within a predetermined angle, and the control plate is connected to a drive pin that protrudes from the outer surface of the control plate, with its tip facing into the suction chamber. The arranged drive shaft and the drive shaft installed on the tip side of this drive shaft,
A pressure spring that urges the drive shaft in the backward direction, and a hydraulic control valve that adjusts the hydraulic pressure transmitted from the oil reservoir on the compression chamber side to the space on the rear end side of the drive shaft according to increases and decreases in suction chamber pressure. The gas compressor is equipped with a chamber that is open to the suction chamber side, an extender that is provided in the chamber and expands and contracts due to external pressure, and is driven by the movable end of the extender, and when the extender contracts, the drive shaft moves. The hydraulic control valve is configured by a three-way valve that communicates the rear end side space with the oil reservoir on the compression chamber side and communicates the rear end side space of the drive shaft with the suction chamber side when the expander expands. Gas compressor. 2. The gas compressor according to claim 1, wherein a constriction part is formed in a hydraulic path dedicated to supply from the oil reservoir on the compression chamber side to the space on the rear end side of the drive shaft via the three-way valve.