Invention Application
- Patent Title: BLOWER
- Patent Title (中): 鼓风机
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Application No.: US15112710Application Date: 2015-02-20
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Publication No.: US20160333893A1Publication Date: 2016-11-17
- Inventor: Toshikatsu KONDOU , Youhei KAMIYA , Masaru KAMIYA , Takeshi MIYAMOTO , Masashi MATSUKAWA , Isao KONDOH , Takashi ITO , Kazuhiro TAKEUCHI
- Applicant: DENSO CORPORATION
- Priority: JP2014-031517 20140221
- International Application: PCT/JP2015/000806 WO 20150220
- Main IPC: F04D29/66
- IPC: F04D29/66 ; F04D29/32 ; F04D29/52 ; F04D29/16

Abstract:
A blower fan includes a plurality of blades radially extending from a boss provided at a rotary center and spaced apart from each other in the rotational direction, and a ring portion connecting outer peripheral ends of the blades in a ring shape. A radially outer end part at an end on an air-flow upstream side of the ring portion is positioned outward in a radial direction of a rotary shaft in the blower fan, as toward the air-flow upstream side. Thus, the blower can prevent the backflow air from being swirled, thereby reducing noise.
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