Title:
IMPELLER STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2018/064854
Kind Code:
A1
Abstract:
An impeller structure, comprising a wheel hub (1), around the periphery of which several blades are evenly arranged, each of the blades consisting of an upper spiral spreading surface (2) and a lower spiral spreading surface (3); the lower spiral spreading surface (3) is a windward surface and comprises an upper windward section (3.1), a main windward section (3.2) and a lower windward section (3.3); the upper windward section (3.1) is provided on the upper portion of the main windward section (3.2), and the transition portion between the upper windward section (3.1) and the main windward section (3.2) is straight; an angle A is formed between the upper windward section (3.1) and the main windward section (3.2) and the horizontal plane of the impeller, the angle A being 20°-60°. By means of the structural improvement, the impeller has a simple and reasonable structure, low production cost, a large air volume of blades, low noise levels, high air-drying efficiency, a long life span and is easy to mount, having high applicability.
More Like This:
| JP6050297 | A propeller fan and a molding die |
Inventors:
WANG BAOHUA (CN)
Application Number:
PCT/CN2016/105997
Publication Date:
April 12, 2018
Filing Date:
November 16, 2016
Export Citation:
Assignee:
WANG BAOHUA (CN)
International Classes:
F04D29/38; A45D20/12
Domestic Patent References:
| WO2016031339A1 | 2016-03-03 |
Foreign References:
| TW482256U | 2002-04-01 | |||
| CN105473853A | 2016-04-06 | |||
| CN202646149U | 2013-01-02 | |||
| JP2003093137A | 2003-04-02 | |||
| CN1502961A | 2004-06-09 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
Download PDF: