Title:
BLOWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/084537
Kind Code:
A1
Abstract:
This blower device comprises a fan that rotates about a fan shaft. The fan has a plurality of blades arranged with space therebetween in the circumferential direction. Each of the blades has, in a cross section perpendicular to the axial direction of the fan shaft, a cross-sectional shape that curves in an arch shape. Each of the blades comprises: a suction surface that is one main surface of the blade and is disposed on the outer side of the arch; a pressure surface that is the other main surface of the blade and is disposed on the inner side of the arch; a blade outer circumferential end portion that is an end portion on the outer circumferential side of the blade that connects the suction surface and the pressure surface; and a blade inner circumferential end portion that is an end portion on the inner circumferential side of the blade that connects the suction surface and the pressure surface. When at least one of the plurality of blades or all of the blades are divided into three regions in a cross section perpendicular to the axial direction of the fan shaft, said three regions being a first region disposed on the blade outer circumferential end side, a second region disposed on the blade inner circumferential end side, and a third region connecting the first region and the second region, the first region and the second region have the same camber direction and are cambered so as to be concaved towards the counter-rotation direction, and the camber height of at least the first region and the second region changes along the chord of the blade.
Inventors:
ADACHI NAHO (JP)
KONO ATSUSHI (JP)
TERAMOTO TAKUYA (JP)
KONO ATSUSHI (JP)
TERAMOTO TAKUYA (JP)
Application Number:
PCT/JP2022/038502
Publication Date:
April 25, 2024
Filing Date:
October 17, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D17/04; F04D29/30; F24F1/0025
Foreign References:
| CN104196756A | 2014-12-10 | |||
| JP2001280288A | 2001-10-10 | |||
| JP2010174852A | 2010-08-12 | |||
| JPS3817526B1 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF:
Previous Patent: REFRIGERATION CYCLE SYSTEM
Next Patent: ROBOT HAND, SUBSTRATE CONVEYANCE DEVICE, HOLDING UNIT, AND SUBSTRATE REMOVAL METHOD
Next Patent: ROBOT HAND, SUBSTRATE CONVEYANCE DEVICE, HOLDING UNIT, AND SUBSTRATE REMOVAL METHOD