Title:
RANGE HOOD
Document Type and Number:
WIPO Patent Application WO/2022/082847
Kind Code:
A1
Abstract:
A range hood, comprising a fan system (2). The fan system (2) comprises a volute (21) and an impeller (22); the volute (21) comprises a front cover plate (211), a rear cover plate (212), and an annular wall (213); a volute tongue (214) is formed on the annular wall (213); an air inlet (215) is provided in the front cover plate (211); the air inlet (215) faces downward to form a horizontal range hood; the volute tongue (214) gradually inclines in a direction opposite to the rotation direction of the impeller (22) from the rear cover plate (212) to the front cover plate (211). The flow rate is increased by narrowing a channel between the volute tongue (214) and the impeller (22) to form certain gas reflux, thereby allowing oil flowing from the inner side of the front cover plate (211) of the volute (21) to an air outlet to be blown to the channel, and to flow downwards for collection.
Inventors:
JIANG YI (CN)
XU ZHINENG (CN)
LEI GAI (CN)
SHI LEI (CN)
GOU WENBO (CN)
XU ZHINENG (CN)
LEI GAI (CN)
SHI LEI (CN)
GOU WENBO (CN)
Application Number:
PCT/CN2020/125217
Publication Date:
April 28, 2022
Filing Date:
October 30, 2020
Export Citation:
Assignee:
NINGBO FOTILE KITCHEN WARE CO (CN)
International Classes:
F04D29/42; F04D29/28; F24C15/20
Foreign References:
| CN104005996A | 2014-08-27 | |||
| FR2875560B1 | 2006-12-01 | |||
| CN203730405U | 2014-07-23 | |||
| CN2679405Y | 2005-02-16 | |||
| CN103742453A | 2014-04-23 | |||
| CN203906394U | 2014-10-29 | |||
| CN105257598A | 2016-01-20 | |||
| CN105673567A | 2016-06-15 |
Attorney, Agent or Firm:
NINGBO CHANNEL PATENT ATTORNEYS OFFICE (CN)
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