JPH0274585U

JPH0274585U -

Info

Publication number: JPH0274585U
Application number: JP15397488U
Authority: JP
Priority date: 1988-11-25
Filing date: 1988-11-25
Publication date: 1990-06-07

Description

[Brief explanation of drawings]

第１図〜第５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
トンヘチツプシールが嵌入された状態を示す凹溝
周辺の縦断面図、第４図はロータリピストンが外
周方向へ移動している時のシールリングの動きを
示す縦断面図、第５図はロータリピストンが中心
方向へ移動している時のシールリングの動きを示
す縦断面図である。第６図および第７図は従来例
を示し、第６図は従来のチツプシールを採用した
圧縮機の第１図と同部分の図、第７図はロータリ
ピストンの移動によるチツプシールの動きを示す
縦断面図である。２……オイルレス圧縮機、３……シリンダ、４
……ロータリピストン、４ｄ……凹溝、４ｅ……
内側面、４ｆ……外側面、１２……ブレード、Ｔ
……チツプシール、１５……小径シールリング、
１６……大径シールリング、１５ｂ……内周面、
１６ｃ……外周面。 Figures 1 to 5 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 around the compressor, and Figure 3 being a rotary piston. A vertical cross-sectional view of the area around the concave groove showing the state in which the hetip seal is inserted, Figure 4 is a vertical cross-sectional view showing the movement of the seal ring when the rotary piston is moving toward the outer circumference, and Figure 5 is a vertical cross-sectional view of the rotary piston. FIG. 4 is a vertical cross-sectional view showing the movement of the seal ring when the seal ring is moving toward the center. Figures 6 and 7 show a conventional example, Figure 6 is a view of the same part as Figure 1 of a compressor that uses a conventional tip seal, and Figure 7 is a longitudinal section showing the movement of the tip seal due to the movement of the rotary piston. It is a front view. 2...Oilless compressor, 3...Cylinder, 4
...Rotary piston, 4d...Concave groove, 4e...
Inner surface, 4f...Outer surface, 12...Blade, T
...Chip seal, 15...Small diameter seal ring,
16... Large diameter seal ring, 15b... Inner peripheral surface,
16c...Outer peripheral surface.

Claims

[Scope of utility model registration request]

A rotary piston 4 is eccentrically provided in the cylinder 3, and a blade 12 is provided in the cylinder 3 so as to be freely retractable into the cylinder 3.
is in pressure contact with the rotary piston 4, and a concave groove 4d is formed around the entire circumference on the outer peripheral edge of the end surface of the rotary piston 4, and a ring-shaped tip seal T is fitted into the concave groove 4d. In the oil-less compressor equipped with
are the small diameter seal ring 15 and the large diameter seal ring 16.
The small-diameter seal ring 15 is connected to the groove 4.
The inner circumferential surface 1 of d is in close contact with the inner surface 4e of
The diameter of the outer peripheral surface 16c of the large diameter seal ring 16 is configured to be smaller than the diameter of the inner surface 4e of the groove 4d, and the diameter of the outer peripheral surface 16c of the large diameter seal ring 16 is configured to be smaller than the diameter of the inner surface 4e of the groove 4d. An oil-less compressor characterized in that the diameter of the outer surface 4f of the compressor 4d is greater than or equal to the diameter of the outer surface 4f.