JPS62195685U

JPS62195685U -

Info

Publication number: JPS62195685U
Application number: JP8393586U
Authority: JP
Priority date: 1986-06-02
Filing date: 1986-06-02
Publication date: 1987-12-12

Description

[Brief explanation of the drawing]

第１図はこの考案に係るルーツ型過給機の第１
実施例を示す要部拡大図、第２図はこの考案の第
２実施例を示す要部拡大図、第３図は従事のルー
ツ型過給機を示す全体構成図、第４図は従来のル
ーツ型過給機の拡大図である。１１……ケーシング、１１ａ……内周面、１２
……低回転ロータ、１２ａ……頂面、１３……高
圧室、１４……低圧室、１５……整流溝、１６…
…開口部、１７……底部、１８……高圧室側端縁
、１９……高圧室側内壁面、２０……低圧室側内
壁面、２１……低圧室側端縁。 Figure 1 shows the first roots-type supercharger according to this invention.
Fig. 2 is an enlarged view of main parts showing the second embodiment of this invention, Fig. 3 is an overall configuration diagram showing an engaged roots-type supercharger, and Fig. 4 is a conventional one. FIG. 2 is an enlarged view of a roots-type supercharger. 11...Casing, 11a...Inner peripheral surface, 12
...Low rotation rotor, 12a... Top surface, 13... High pressure chamber, 14... Low pressure chamber, 15... Rectifying groove, 16...
...opening, 17... bottom, 18... edge on the high pressure chamber side, 19... inner wall surface on the high pressure chamber side, 20... inner wall surface on the low pressure chamber side, 21... edge on the low pressure chamber side.

Claims

[Scope of utility model registration request]

Inside the casing, which has a high pressure chamber and a low pressure chamber,
Two rotors are provided that rotate synchronously while meshing with each other on their outer circumferential surfaces, and their top surfaces rotate close to the inner circumferential surface of the casing, and the air sucked into the low pressure chamber is sandwiched between the outer circumferential surface of the rotors and the inner circumferential surface of the casing. In a Roots-type supercharger that feeds pressure to a high-pressure chamber on the opposite side, the opening of the rectifying groove formed on the top surface of at least the low-speed rotor is formed to be inclined toward the high-pressure chamber, and , a bottom portion disposed in the substantially axial direction of the opening portion is formed into a substantially folded surface shape, and an inner wall surface on the high pressure chamber side existing between the opening portion and the bottom portion is formed into a gently sloped surface; Roots characterized in that the inner wall surface on the low pressure chamber side is formed approximately parallel to the inner wall surface on the high pressure chamber side, and the edge of the opening located at the upper part of the inner wall surface on the low pressure chamber side is formed in an acute angle shape. type supercharger.