JPS62200190U

JPS62200190U -

Info

Publication number: JPS62200190U
Application number: JP8891586U
Authority: JP
Priority date: 1986-06-11
Filing date: 1986-06-11
Publication date: 1987-12-19
Also published as: JPH0320557Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る気体圧縮機の第１実施例
を示す縦断面図、第２図は同気体圧縮機に用いる
制御プレートの斜視図、第３図並びに第４図は低
速運転時、高速運転時における制御プレートの回
転位置を示す各断面図、第５図は本考案に係る気
体圧縮機の第２実施例を示す縦断面図、第６図は
、同気体圧縮機に用いる制御プレートを示す斜視
図である。４……シリンダ、５……フロントサイドブロツ
ク、６……リアサイドブロツク、８……ベーン、
９……ロータ、１０……制御プレート、１１……
凹部（吸入口）、１２……連絡孔、１３……シリ
ンダ室、１４……吸気口、１９……吐出口、２０
……空間部、２１……潤滑油、２２……油供給経
路、２３……ベーン圧室、２４，２７……連通路
、２５……周縁溝、２６，２９……貫通孔、２８
……円弧状溝。 FIG. 1 is a longitudinal sectional view showing a first embodiment of the gas compressor according to the present invention, FIG. 2 is a perspective view of a control plate used in the gas compressor, and FIGS. Each sectional view shows the rotational position of the control plate during high-speed operation, FIG. 5 is a longitudinal sectional view showing the second embodiment of the gas compressor according to the present invention, and FIG. 6 shows the control plate used in the same gas compressor. FIG. 4...Cylinder, 5...Front side block, 6...Rear side block, 8...Vane,
9...Rotor, 10...Control plate, 11...
Recess (intake port), 12... Communication hole, 13... Cylinder chamber, 14... Intake port, 19... Discharge port, 20
... Space portion, 21 ... Lubricating oil, 22 ... Oil supply route, 23 ... Vane pressure chamber, 24, 27 ... Communication path, 25 ... Peripheral groove, 26, 29 ... Through hole, 28
...Arc-shaped groove.

Claims

[Claims for Utility Model Registration] A cylinder whose inner periphery is approximately elliptical, front and rear side blocks attached to both sides of the cylinder, and a rotating cylinder inside the cylinder chamber constituted by the cylinder and both side blocks. A compressor main body consisting of a rotor that is freely suspended horizontally and has a plurality of vanes that can move forward and backward in the radial direction, and a control plate that is rotatably mounted on the inner surface of the front side block so as to be rotatable within a predetermined angle. , an airtight seal for accommodating the compressor main body, forming a space at the rear of the rear side block, storing lubricating oil under discharge pressure in the space, and rotatably holding the rotor shaft tip of the rotor. The lubricating oil is supplied to each part of the compressor main body by the discharge pressure of the compressed gas through the oil supply path formed in the compressor main body, and at the same time, a part of the lubricating oil is supplied to the vane pressure chamber. The contact pressure of the vane against the inner wall of the cylinder chamber is obtained by this oil pressure, and the control plate is rotationally driven according to high-speed and low-speed operation to increase the capacity of the compression work chamber in the cylinder chamber. In a variable gas compressor, a communication path is formed in the control plate that selectively communicates the oil supply path with the vane pressure chamber depending on the rotational position of the control plate during low-speed and high-speed operation. A gas compressor characterized in that lubricating oil is supplied to the vane pressure chamber through the communication passage, and during high-speed operation, the communication passage is shut off to reduce the hydraulic pressure in the vane pressure chamber.