JPH0199994U

JPH0199994U -

Info

Publication number: JPH0199994U
Application number: JP19548487U
Authority: JP
Priority date: 1987-12-23
Filing date: 1987-12-23
Publication date: 1989-07-05

Description

[Brief explanation of the drawing]

第１〜３図は本考案に係る気体圧縮機の一実施
例を示すものであつて、第１図はその縦断面図、
第２図は逆止弁の拡大断面図、第３図は第１図の
Ａ―Ａ線断面図、第４〜６図は従来の気体圧縮機
を示すものであつて、第４図はその縦断面図、第
５図は第４図のＢ―Ｂ線断面図および第６図はベ
ーンの斜視図である。１……気体圧縮機本体、２……ケーシング、３
……フロントヘツド、４……シリンダブロツク、
５……フロントサイドブロツク、６……リヤサイ
ドブロツク、７……ロータ軸、８……ベーン、８
ａ……溝、９……ロータ、９ａ……溝状凹部、９
ｂ……ベーン圧室、１０……制御プレート、１１
……バイパス用凹部、１２……連絡孔、１４……
吸気孔、１５……吸入室、１６……吸気通路、１
７ａ，１７ｂ……切欠き、１８ａ……吐出ポート
、１８ｂ……吐出弁、１９……油分離器、２０…
…吐出孔、２１……連通路、２２……逆止弁、ａ
……シリンダ室。 1 to 3 show an embodiment of a gas compressor according to the present invention, and FIG. 1 is a longitudinal sectional view thereof;
Figure 2 is an enlarged sectional view of a check valve, Figure 3 is a sectional view taken along line A--A in Figure 1, and Figures 4 to 6 show a conventional gas compressor. 5 is a longitudinal sectional view, FIG. 5 is a sectional view taken along line BB in FIG. 4, and FIG. 6 is a perspective view of the vane. 1... Gas compressor main body, 2... Casing, 3
...Front head, 4...Cylinder block,
5...Front side block, 6...Rear side block, 7...Rotor shaft, 8...Vane, 8
a...Groove, 9...Rotor, 9a...Groove-shaped recess, 9
b... Vane pressure chamber, 10... Control plate, 11
...Bypass recess, 12...Communication hole, 14...
Intake hole, 15... Suction chamber, 16... Intake passage, 1
7a, 17b...notch, 18a...discharge port, 18b...discharge valve, 19...oil separator, 20...
...Discharge hole, 21...Communication path, 22...Check valve, a
...Cylinder chamber.

Claims

[Claims for Utility Model Registration] A cylinder block with a substantially elliptical inner periphery provided between side blocks on both sides, and a cylinder block horizontally mounted rotatably within a cylinder chamber formed by the cylinder block and both side blocks. A rotary vane type gas compressor having a rotor, and a vane formed with a vertically long groove that can freely move forward and backward into a groove-shaped recess provided in the radial direction of the rotor and that reaches the lower end of the surface in the rotation direction, The side block is provided with a communication passage in which one opening opens at a position corresponding to the bottom of the groove-like recess and the other opening opens on the intake side, and a check valve is provided in the communication passage. The gas compressor is characterized in that when the pressure at the bottom is lower than the pressure at the intake side, the check valve opens and the bottom and the intake side communicate with each other.