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Patent Searching and Data


Title:
PROPELLER FAN AND BLOWER
Document Type and Number:
WIPO Patent Application WO/2015/049914
Kind Code:
A1
Abstract:
Defining γ as the inner angle formed when connecting an inside reference point (Q1), a blade tip (71) and an outside reference point (Q2) in that order with straight lines, it holds for this propeller fan that 12≤γ/n≤17; defining Ln as the length along an arc which is a section of a circumscribed circle (CR) and is formed between a first point (P1) and an intermediary portion (P4), it holds that 0.4≤Ln/Lm≤0.7; and, defining R1 as the length of the line segment connecting the center of the circumscribed circle (CR) and the blade tip (71) and R0 as the radius of the circumscribed circle (CR), it holds that 0.8≤R1/R0≤0.95.

Inventors:
KUMON, Yui
OHTSUKA, Masaki
Application Number:
JP2014/070038
Publication Date:
April 09, 2015
Filing Date:
July 30, 2014
Export Citation:
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Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
International Classes:
F04B23/00; A47L9/00; F04D23/00; F04D29/26; F04D29/38; F04D29/58
Foreign References:
JPH0949500A
JPH0968199A
JP2003193997A
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Central Tower, 2-7 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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