Title:
AIR BLOWER AND AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/152731
Kind Code:
A1
Abstract:
This air blower is provided with a first centrifugal fan and a cross flow fan that are coaxially provided to a rotary shaft. The first centrifugal fan has a first casing and a first impeller that is housed in the first casing. The first impeller has a first rotation main plate that is rotatable about the rotary shaft and a plurality of first blades that are provided to the first rotation main plate. The cross flow fan has: a second impeller provided to a surface on the opposite side to a surface of the first rotation main plate where the first blades are provided; a tongue part that is disposed at a portion of the rotation outer circumference of the second impeller; and a scroll casing that is disposed along the rotation outer circumference at a position opposing the tongue part with the second impeller interposed therebeteween. One of the two ends of the second impeller in an axial direction of the rotary shaft is connected to the surface on the opposite side to the surface of the first rotation main plate where the first blades are provided. The air blower is configured such that the blade diameter of the first impeller is less than the blade diameter of the second impeller.
Inventors:
MIYAWAKI KOSUKE (JP)
FUKUI TOMOYA (JP)
SAKODA KENICHI (JP)
MORIKAWA SHOTA (JP)
FUKUI TOMOYA (JP)
SAKODA KENICHI (JP)
MORIKAWA SHOTA (JP)
Application Number:
PCT/JP2020/003206
Publication Date:
August 05, 2021
Filing Date:
January 29, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F1/0022; F04D17/04; F04D17/16; F04D25/16; F24F1/0025
Foreign References:
| CN104421189A | 2015-03-18 | |||
| JPH0163926U | 1989-04-25 | |||
| JP2018084368A | 2018-05-31 | |||
| JPS5822494U | 1983-02-12 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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