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Title:
BLOWER
Document Type and Number:
Japanese Patent JP2007002836
Kind Code:
A
Abstract:

To provide a vortex flow blower achieving higher pressurization, increase of efficiency by improvement of cooling performance and simplification of a seal structure.

In a blower which consists of a blade casing 4a including an annular groove having a center on a rotary shaft 11, and a combination of an impeller 4 of the vortex flow blower provided with a plurality of blades crossing the annular groove and partitioning the same in an circumference direction in the annular groove of the blade casing and a casing 5 provided with stationary flow passage opposing to the annular groove, a plurality of combinations of the impeller 4 and the stationary flow passage 3 are ranged and flow is introduced by connecting a delivery side and a suction side provided on the stationary flow passage 3 of each stage. Each impeller 4 performs two stage pressure rise with one piece and has a shape of cross section of a blade casing 4a in semicircular or a cup shape halving an ellipse shape.


Inventors:
ISHIKAWA SHIZUKA
ISHIDA FUMIAKI
TAKEDA SATOSHI
Application Number:
JP2005341366A
Publication Date:
January 11, 2007
Filing Date:
November 28, 2005
Export Citation:
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Assignee:
HITACHI IND EQUIPMENT SYS
International Classes:
F04D23/00
Domestic Patent References:
JPH07127595A1995-05-16
JPS5144307A1976-04-15
JP2004060626A2004-02-26
JPH07217588A1995-08-15
JP39728C
JPS58129095U1983-09-01
JPS61207890A1986-09-16
JPS4718016A
Attorney, Agent or Firm:
Manabu Inoue