Title:
IMPELLER OF FAN FOR AIR-CONDITIONER
Document Type and Number:
Japanese Patent JP2004003447
Kind Code:
A
Abstract:
To improve the fan efficiency of an impeller of a fan for an air-conditioner.
In an impeller of a diagonal flow fan having a plurality of blades on a substantially truncated conical hub, an outer circumferential side chord length of the blades is larger than the chord length on the hub side, an apex is provided on the axis of the truncated cone with the apex as a starting point. In a sectional shape of the blades in a conical coordinates in which the blades are cut and developed, the maximum camber height of a camber line is smaller than that of an arc-shaped blade, and the ratio r of the maximum camber height to that of the arc-shaped blade is set to be constant over the radial direction of the blades.
Inventors:
IZUMI YOSHIKI
SUGIO TAKASHI
GOTO YOSHIAKI
SUGIO TAKASHI
GOTO YOSHIAKI
Application Number:
JP2003060736A
Publication Date:
January 08, 2004
Filing Date:
March 07, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F04D23/00; F04D29/30; (IPC1-7): F04D29/30; F04D23/00
Attorney, Agent or Firm:
Takao Itagaki
Yoshihiro Morimoto
Yoshihiro Morimoto
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