Title:
BACKWARD INCLINED IMPELLER HAVING DOUBLE AIR INLETS
Document Type and Number:
WIPO Patent Application WO/2020/042989
Kind Code:
A1
Abstract:
A backward inclined impeller having double air inlets, comprising annular impeller covers (1), a cylindrical disc shaft (2) and an annular impeller disc (3) which is fixedly sleeved on the disc shaft (2); there are two impeller covers (1) and the impeller covers are arranged symmetrically along the center of the annular impeller disc (3), a plurality of blades (5) evenly distributed at intervals along the circumferential direction of the annular impeller disc (3) are arranged between each of the two impeller covers (1) and the annular impeller disc (3), a cross section, in an axial direction of each of the impeller covers (1), of a side wall of each of the impeller covers (1) is arc-shaped, a side wall of each of the impeller covers (1) is bent in a direction of the annular impeller disc (3), and a side wall of each of the wheel covers (1) close to one end of the annular impeller disc (3) is bent in a direction away from the annular impeller disc (3) to form annular reinforcement portions (1a), the reinforcement portions (1a) and the impeller covers (1) being coaxially provided.
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Inventors:
ZHANG XIANYOU (CN)
Application Number:
PCT/CN2019/101886
Publication Date:
March 05, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
SAYI ELECTRICAL APPLIANCE CO LTD (CN)
International Classes:
F04D29/30; F04D25/08; F04D29/00; F04D29/42
Foreign References:
| CN208686647U | 2019-04-02 | |||
| CN2747386Y | 2005-12-21 | |||
| CN103089698A | 2013-05-08 | |||
| JP2011174452A | 2011-09-08 | |||
| CN205618428U | 2016-10-05 |
Attorney, Agent or Firm:
LANTIAN INTELLECTUAL PROPERTY AGENCY (CN)
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