CENTRIFUGAL BLOWER, AIR BLOWER DEVICE, AIR CONDITIONING DEVICE, AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2019/082392

A1

A blower (1) is provided with: a disk-shaped main plate; a fan (2); and a scroll casing (4) having a side wall (4c) which covers the fan (2) from the axial direction of the rotation shaft of the fan (2) and in which an intake port letting air in is formed, having a discharge port (41) that discharges air flow generated by the fan (2), having a tongue part (4b) that leads the air flow to the discharge port (41), and having a peripheral wall (4a) that surrounds the fan (2) from the radial direction of the rotation shaft and that is configured such that the distance to the rotation shaft is longer at a portion thereof where an angle in the rotation direction of the fan (2) is larger, with an end portion (41a) of the discharge port (41) on the tongue part (4b) side set as a reference. The side wall (4c) is provided with a bell mouth (3). The distance, in the radial direction, between the upstream end (3a) and the downstream end (3b) of the bell mouth (3) is longer at a portion thereof where the angle in the rotation direction of the fan (2) is larger, with the end portion (41a) of the discharge port (41) on the tongue part (4b) side set as a reference.

TERAMOTO TAKUYA (JP)
HORIE RYO (JP)
YAMATANI TAKAHIRO (JP)
MICHIKAMI KAZUYA (JP)
TSUTSUMI HIROSHI (JP)
YAMAGUCHI KEIJIRO (JP)

PCT/JP2017/038960

May 02, 2019

October 27, 2017

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MITSUBISHI ELECTRIC CORP (JP)

F04D29/44

JPS63118397U	1988-07-30
JPH08177795A	1996-07-12
JP2007127089A	2007-05-24
JP2006097502A	2006-04-13
JP2001182692A	2001-07-06
GB2283060A	1995-04-26

TAKAMURA, Jun (JP)

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