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Patent Searching and Data


Title:
VORTEX BLOWER
Document Type and Number:
Japanese Patent JP2005207278
Kind Code:
A
Abstract:

To provide a vortex blower capable of absorbing interference noise by a means excluding a sound absorption equipment.

A casing 8 of the vortex blower forms an intake opening 10A continuous to a communicating passage 10B of an intake port 10 and a discharge opening 11A continuous to the communicating passage 11B of a discharge port 11 by providing a partition wall 14 on a boost passage 9 comprising an annular groove. A plurality of holes (through holes) 18 are provided on the partition wall 14, and a space part 17 formed between the communicating passages 10B and 11B communicates with the boost passage 9 by the holes 18, where a Helmholtz sound absorption equipment is formed. The interference noise generated inside the casing 8 resonates therewith, and is canceled and reduced by a resonance action.


Inventors:
Takeda, Satoshi
Ishida, Fumiaki
Moritake, Takeshi
Asabuki, Hiroshi
Application Number:
JP2004000013335
Publication Date:
August 04, 2005
Filing Date:
January 21, 2004
Export Citation:
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Assignee:
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO LTDHITACHI KEIYO ENGINEERRING & SYSTEM LTD
International Classes:
F04D23/00; F04D29/66; (IPC1-7): F04D23/00; F04D29/66
Attorney, Agent or Firm:
武 顕次郎