Title:
IMPELLER, CENTRIFUGAL FAN USING IMPELLER, AND RANGEHOOD
Document Type and Number:
WIPO Patent Application WO/2022/077585
Kind Code:
A1
Abstract:
An impeller (200), comprising a front disc (1), a rear disc (2) and a blade (3) arranged between the front disc (1) and the rear disc (2). An inlet angle of the blade (3) increases along an axial direction of the impeller (200) from the front disc (1) to the rear disc (2). Also disclosed are a centrifugal fan (100) using the impeller (200), and a rangehood using the centrifugal fan (100). Compared with the prior art, an inlet angle which changes along the axial direction is arranged such that working capability matches air flow volume, thus the non-uniformity of outlet velocity of the impeller (200) is mitigated, and a secondary vortex near the upper cover of a volute (300) can be improved.
Inventors:
LEI GAI (CN)
Application Number:
PCT/CN2020/124782
Publication Date:
April 21, 2022
Filing Date:
October 29, 2020
Export Citation:
Assignee:
NINGBO FOTILE KITCHEN WARE CO (CN)
International Classes:
F04D29/28; F04D17/16; F04D29/30; F04D29/66; F24C15/20
Foreign References:
| CN209340209U | 2019-09-03 | |||
| CN101363450A | 2009-02-11 | |||
| CN209818390U | 2019-12-20 | |||
| CN109219703A | 2019-01-15 | |||
| CN109505801A | 2019-03-22 | |||
| CN108131324A | 2018-06-08 | |||
| CN110319054A | 2019-10-11 | |||
| CN111043073A | 2020-04-21 | |||
| JP2014202198A | 2014-10-27 | |||
| DE102012019632A1 | 2013-03-28 |
Attorney, Agent or Firm:
NINGBO CHANNEL PATENT ATTORNEYS OFFICE (CN)
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