Title:
VORTEX FLOW BLOWER
Document Type and Number:
Japanese Patent JPH05312183
Kind Code:
A
Abstract:
PURPOSE: To more effectively form the turning flow in an annular flow passage of a vortex flow blower so as to reduce turbulence, improve the performance of the vortex flow blower, and silence the noise.
CONSTITUTION: An annular flow passage 1a is formed by an impeller 1, and an annular flow passage 2a provided with a suction port 4 and a discharge port 7 is provided, oppositely facing to the impeller 1. This annular flow passage 2a is provided with an air bleed hole 16 and a return flow passage 17 for preventing carry-over flow to leak from a casing discharge port 8a side to a casing suctin port 4 side.
Inventors:
YAMAZAKI SUSUMU
FUJIO MASAYUKI
ITO EIICHI
FUJIO MASAYUKI
ITO EIICHI
Application Number:
JP12034492A
Publication Date:
November 22, 1993
Filing Date:
May 13, 1992
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F04D23/00; (IPC1-7): F04D23/00
Attorney, Agent or Firm:
Yukihiko Takada