JPH0452588U

JPH0452588U -

Info

Publication number: JPH0452588U
Application number: JP9572790U
Authority: JP
Priority date: 1990-09-11
Filing date: 1990-09-11
Publication date: 1992-05-06

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の一実施例を示し、第
１図は圧縮機の内部構造を示す横断面図、第２図
は圧縮機周辺の縦断面図、第３図はロータリピス
トンの縦断面図、第４図はロータリピストンに作
用する垂直方向の圧力分布図である。第５図〜第
７図は従来例を示し、第５図は第１図相当図、第
６図はロータリピストン周辺の拡大断面図、第７
図は第４図相当図である。１……オイルレス圧縮機、３……シリンダ、３
ａ……ブレード溝、４，５……サイドケース、６
……ロータリピストン、１２……ブレード、１３
……低圧空間（圧縮空間）、１４……高圧空間（
圧縮空間）、１５……上端面、１６……下端面、
１５ａ，１６ａ……凹溝、１５ｂ，１６ｂ……外
側端面、１５ｃ，１６ｃ……内側端面、１５ｄ，
１６ｄ……外周壁、１５ｅ，１６ｅ……内周壁、
１７，１８……チツプシール、１７ｂ，１８ｂ…
…外周面、１７ｃ，１８ｃ……内周面、１９，２
０……フエース面。 Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a cross-sectional view showing the internal structure of the compressor, Figure 2 being a longitudinal sectional view of the surroundings of the compressor, and Figure 3 being a rotary piston. FIG. 4 is a vertical sectional view of the pressure distribution acting on the rotary piston. 5 to 7 show conventional examples, FIG. 5 is a view equivalent to FIG. 1, FIG. 6 is an enlarged sectional view around the rotary piston, and FIG.
The figure is a diagram equivalent to Figure 4. 1... Oil-less compressor, 3... Cylinder, 3
a...Blade groove, 4, 5...Side case, 6
...Rotary piston, 12...Blade, 13
...Low pressure space (compression space), 14...High pressure space (
compression space), 15... upper end surface, 16... lower end surface,
15a, 16a...concave groove, 15b, 16b...outer end surface, 15c, 16c...inner end surface, 15d,
16d...outer peripheral wall, 15e, 16e...inner peripheral wall,
17, 18... Chip seal, 17b, 18b...
...Outer peripheral surface, 17c, 18c...Inner peripheral surface, 19,2
0...Face side.

Claims

[Scope of claims for utility model registration] (1) Side cases 4 and 5 are provided on both end surfaces of the cylinder 3.
is installed, and in the space formed by the cylinder 3 and the side cases 4 and 5, a rotary piston 6 is eccentric with respect to the cylinder 3 and a part thereof is in contact with the inner circumferential surface of the cylinder 3. A blade 12 is provided in the cylinder 3 so as to be able to freely protrude and retract into the cylinder 3, and its tip abuts on the outer peripheral surface of the rotary piston 6. On the other hand, each end surface 15, 16 of the rotary piston 6 has a Annular grooves 15a, 16a are formed, and the gaps between the end surfaces 15, 16 of the rotary piston 6 and the face surfaces 19, 20 of the side cases 4, 5 are formed in the grooves 15a, 16a. In a rotary compressor, ring-shaped tip seals 17 and 18 are fitted to close the space of the rotary piston 6 to reduce the compression spaces 13 and 14 formed in the space by the rotation of the rotary piston 6. The inner end surfaces 15c, 16c located inside the grooves 15a, 16a of the respective end surfaces 15, 16 are closer to the face surfaces 19, 19 of the side cases 4, 5 than the outer end surfaces 15b, 16b located outside the grooves 15a, 16a. A rotary compressor characterized in that the rotary compressor is formed so as to be retracted in a direction away from 20. (2) In the rotary compressor according to claim (1), the chip seals 17, 18 are arranged on the outer circumferential surface 17b.
, 18b is the outer peripheral wall 15d of the grooves 15a, 16a,
16d, and the inner peripheral surfaces 17c and 18c are in the groove 1.
A rotary compressor characterized in that it is provided away from inner peripheral walls 15e, 16e of 5a, 16a.