Title:
BLOWER
Document Type and Number:
Japanese Patent JP2020148091
Kind Code:
A
Abstract:
To solve the following problem: looseness occurs when an impeller rotates if the diameter of an insertion hole of the impeller is made unnecessarily large, and it is necessary to apply strong force when inserting a rotary shaft into the insertion hole, and thereby the shaft is hardly attached or detached.SOLUTION: A blower is such that: an insertion hole 17 is a space for communicating an insertion opening 22 and an insertion hole tip end part 23; the diameter 43 of the insertion hole tip end part 23 is an opening matching to the diameter 42 of a rotary shaft 9 and gets gradually larger until reaching a portion 40 having the same diameter as the diameter 41 of the insertion opening 22; the diameter 41 of the insertion opening 22 is made larger than the diameter 42 of the rotary shaft 9, so that an impeller 8 is held to the rotary shaft 9 with appropriate force and looseness in the impeller 8 can be suppressed while the impeller 8 can be easily attached or detached.SELECTED DRAWING: Figure 9
Inventors:
ARAMAKI TAKUMA
NAKASONE TAKAAKI
NIWA YUKIHIRO
ISHIKAWA MAKOTO
SHIMIZU TATSUKI
NAKASONE TAKAAKI
NIWA YUKIHIRO
ISHIKAWA MAKOTO
SHIMIZU TATSUKI
Application Number:
JP2019043291A
Publication Date:
September 17, 2020
Filing Date:
March 11, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
F04D29/28; F24F7/06
Attorney, Agent or Firm:
Kenji Kamada
Koichi Nomura
Koichi Nomura