Supercharger and housing, bearing plate and outlet port therefor

Details Supercharger and housing, bearing plate and outlet port therefor Supercharger and housing, bearing plate and outlet port therefor

1994-08-03

1996-06-18

Freay, Charles

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F01C 116

Patent

active

055271685

ABSTRACT:
A rotary blower (11) of the backflow type is disclosed including a housing portion (50), an inlet end wall portion (49), and a bearing plate (15), the housing portion defining cylindrical chambers (31,33) within which are disposed meshed rotors (35,37). The inlet end wall portion (49) defines an inlet port (51), and the housing portion (50) defines an outlet port (53) including a port end surface (59). The bearing plate (15) defines an end surface (29) and a relief chamber including a relief surface (29R), and the port end surface (59) is disposed in a plane defined by the relief surface (29R). As a result, resistance to the transfer of air through the blower is reduced, thus reducing required drive horsepower, and increasing the isentropic efficiency of the blower.

REFERENCES:
patent: 2287716 (1942-06-01), Whitfield
patent: 3057543 (1962-10-01), Marsden
patent: 4768934 (1988-09-01), Soethers
patent: 4828467 (1989-05-01), Brown
patent: 5087583 (1992-01-01), Hampton et al.

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