Title:
AIR BLOWER
Document Type and Number:
Japanese Patent JPH01167500
Kind Code:
A
Abstract:
PURPOSE:To intend to reduce noise without reducing delivery gas quantity by providing circular arcs with radii larger than the gap between a covering member and a vane wheel on corners facing to the vane wheel, on the covering member that separates discharge opening. CONSTITUTION:A covering member 6 is provided inside of a frame 1 and gas is discharged from a discharge opening 5 when a vane wheel 2 rotates anticlockwise and from a discharge opening 4 when the same rotates clockwise. Curved surface portions 8 are provided on corner portions of the covering member 6 facing to the vane wheel 2, and it is constructed so as to reduce high frequency noise generating here on existing article when gas breaks away.
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Inventors:
IINUMA HIROKAZU
MITSUZAWA TOYOHIKO
MITSUZAWA TOYOHIKO
Application Number:
JP32353187A
Publication Date:
July 03, 1989
Filing Date:
December 21, 1987
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
F04D29/48; F04D29/66; (IPC1-7): F04D29/48; F04D29/66
Attorney, Agent or Firm:
Mogami (1 person outside)
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