羽根車、遠心送風機、及び空気調和装置

Japanese Patent JP7391193

B2

An impeller includes: a main plate to be rotated; an annular side plate provided opposite to the main plate and having a suction port for air; and blades connected to the main plate and the side plate and arranged in a circumferential direction around a rotation axis of the main plate. Each of the blades has: an inner peripheral end located adjacent to the rotation axis in a radial direction from the rotation axis; an outer peripheral end located closer to an outer circumferential side of the impeller than the inner peripheral end in the radial direction; a sirocco blade portion that includes the outer peripheral end, has an outlet angle of greater than 90 degrees, and forms a forward-swept blade; and a turbo blade portion that includes the inner peripheral end and forms a swept-back blade. The blade has an end portion facing the suction port and a base portion connected to the main plate, and the end portion has a smaller thickness than that of the base portion in the sirocco blade portion. The end portion of the blade has a blade shape, and in this end portion, a first blade thickness of an inner circumferential side of the impeller is greater than a second blade thickness of the outer circumferential side.

Takuya Teramoto
Hiroyasu Hayashi
Ryo Horie
Takashi Yamaguchi
Tomohiro Nagano
Kazuya Michigami
Takahiro Yamaya

JP2022515195A

December 04, 2023

October 22, 2020

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Mitsubishi Electric Corporation

F04D29/30; F04D25/08

JP2000240590A
JP2009203897A
JP2012202368A
JP2005030349A
JP3179754U
JP2005155580A
JP10306796A

WO2008111368A1
WO2019082378A1

Patent Attorney Corporation Kisa Patent and Trademark Office

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