The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2016
Filed:
Sep. 07, 2010
Yukishige Shiraichi, Osaka, JP;
Masaki Ohtsuka, Osaka, JP;
Yukishige Shiraichi, Osaka, JP;
Masaki Ohtsuka, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka-Shi, JP;
Abstract
Disclosed is a cross-flow fan where an inner diameter (d) and an outer diameter (D) of a fan blade meet the relationship expressed by 0.55≦d/D≦0.95. In cross-flow fan, (N) representing number of fan blades, a chord length (L) and outer diameter (D) of fan blades, and (M) representing number of blade wheels meet the relationships expressed by of 0.6≦L/(πD/N)≦2.8 and 0.15≦πD/(N×M)≦3.77. A plurality of blade wheels are stacked on each other in a manner that a displacement angle (θ) is generated within the range of (1.2×360°/(N×M))≦θ≦(360°/N) between adjacent blade wheels. The displacement angle (θ) is set so that the overlapping number of fan blades having an equal installation angle is at most 5% of N×M representing a total number of fan blades. The present invention can provide a cross-flow fan that can succeed in noise reduction, a molding die used to produce the cross-flow fan, and a fluid feeder equipped with the cross-flow fan.