Title:
BLADE ANGLE AUTONOMOUS ADJUSTING-TYPE VERTICAL AXIAL FLOW BLOWER
Document Type and Number:
Japanese Patent JP2001123992
Kind Code:
A
Abstract:
To increase the wind amount control range in controlling revolutions by restraining starting torque without using a hydraulic unit, a pneumatic unit and a controller, in a vertical axial-flow blower.
A blade angle is autonomically adjusted by centrifugal force. This blower has a structure like a balancing toy used in a speed governor of a motor and has a weight to be moved along the inclined surface of an impelled hub.
Inventors:
KONDO YUMITO
Application Number:
JP29917599A
Publication Date:
May 08, 2001
Filing Date:
October 21, 1999
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F04D29/36; (IPC1-7): F04D29/36
Attorney, Agent or Firm:
Sakuta Yasuo
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