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:
Jan. 06, 2009
Filed:
Oct. 11, 2005
Koji Hisaka, Anjo, JP;
Kunie Matsuoka, Nagoya, JP;
Koji Hisaka, Anjo, JP;
Kunie Matsuoka, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
A centrifugal blower includes a scroll casing defining a scroll passage having a suction port and a discharge port. A fan member is disposed rotatably in the scroll casing, and the fan member is rotated by a motor. The fan member includes a plate member having at least a first circular plate portion and a second circular plate portion which are arranged in an axial direction to have a step shape in cross section, and a plurality of blades which are arranged at an outer peripheral portion of the plate member and extend in the axial direction. Furthermore, the plate member is arranged to change a flow direction of air drawn by the fan member from the suction port in an axial direction, to a radial outside. Because the plate member is arranged in the step shape in cross section, fan noise due to disturbed air flow can be restricted.