BLOWER DEVICE

WIPO Patent Application WO/2018/198799

A1

In one embodiment of this blower device, an impeller has: an impeller hub; a plurality of axial flow blades extending radially outward from the outer peripheral surface of the impeller hub and arranged circumferentially side by side; and centrifugal blades which, on the front side, in a rotational direction, of the radially inner ends of the axial flow blades, connect to the radially inner ends of the axial flow blades. The outer peripheral surface of the impeller hub is a sloped surface having an outer diameter which increases from above downward. The upper surfaces of the centrifugal blades connect to the upper surfaces of the axial flow blades. The centrifugal blades have second blade surfaces connecting to the upper surfaces of the centrifugal blades and facing forward in the rotational direction. The second blade surfaces are sloped surfaces bending rearward in the rotational direction as the surfaces extend from the radially inner side toward the radially outer side. The radially outer ends of the second blade surfaces connect to the connection surfaces of a surface of the impeller, the connection surfaces extending downward from the radially inner ends of first blade surfaces.

WO/2018/196420	CONTROL METHOD FOR ASSEMBLING OR DISASSEMBLING IMPELLER OF AIR CONDITIONER, AND AIR CONDITIONER
WO/2006/018620	VACUUM PUMP

SAKUMA YUUICHI (JP)
OGASAWARA DAISUKE (JP)
MURAKAMI JUN (JP)

PCT/JP2018/015397

November 01, 2018

April 12, 2018

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NIDEC CORP (JP)

F04D29/26; F04D25/16; F04D29/28; F04D29/32

JPH01110898A	1989-04-27
JP2007151368A	2007-06-14
JP2006233812A	2006-09-07
JP2009013855A	2009-01-22
US20130259667A1	2013-10-03

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