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:
Jun. 02, 2015
Filed:
Mar. 09, 2010
Applicants:
Hironobu Teraoka, Sakai, JP;
Shimei Tei, Sakai, JP;
Toru Iwata, Sakai, JP;
Inventors:
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/14 (2006.01); F04D 29/28 (2006.01); F04D 17/04 (2006.01); F04D 29/30 (2006.01); F24F 1/00 (2011.01);
U.S. Cl.
CPC ...
F04D 29/283 (2013.01); F04D 17/04 (2013.01); F04D 29/30 (2013.01); F24F 1/0025 (2013.01); F24F 2001/0048 (2013.01);
Abstract
A crossflow fan includes a rotary impeller formed by curved blades. Each of the bladeshas an outer peripheral edgeclose to the centrifugal side of the impeller and an inner peripheral edgeclose to the rotation axis side of the impeller. A plurality of cutoutsare formed in the outer peripheral edgeand spaced apart at predetermined intervals. Dimplesfor changing a boundary layer from a laminar flow to a turbulent flow are formed in a negative pressure surfaceof each bladein the vicinity of the outer peripheral edgeto prevent the gas flowing around the bladefrom separating from the blade