Title:
MIXED FLOW FAN AND AIR DUCT-TYPE AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/226398
Kind Code:
A1
Abstract:
A mixed flow fan and an air duct-type air conditioner. The mixed flow fan comprises: a volute (10); and a flow concentrator (20), the flow concentrator (20) being arranged at an air inlet position of the volute (10), the flow concentrator (20) having a flow guide channel (21) in communication with the interior of the volute (10), and the inner diameter of the inlet end of the flow guide channel (21) being D1; an impeller (30), the impeller (30) being arranged inside the volute (10), the maximum diameter of the impeller (30) being D2, and the range of D1/D2 being 0.8-0.9. For the mixed flow fan, by regulating the ratio of the inner diameter of the inlet end of the flow guide channel (21) to the maximum outlet diameter of the impeller (30), an air flow faces a smaller resistance force and generates less turbulent flows when flowing through the flow concentrator (20) and the impeller (30). Therefore, under the condition of a limited overall size of the mixed flow fan, the mixed flow fan has an improved working capacity and thus achieves higher efficiency.
Inventors:
LIU YU (CN)
CHI XIAOLONG (CN)
DING SHAOJUN (CN)
CHI XIAOLONG (CN)
DING SHAOJUN (CN)
Application Number:
PCT/CN2022/140577
Publication Date:
November 30, 2023
Filing Date:
December 21, 2022
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/40; F04D29/00; F04D29/18; F04D29/66; F24F1/0018
Foreign References:
| CN114962333A | 2022-08-30 | |||
| CN212987421U | 2021-04-16 | |||
| CN110374900A | 2019-10-25 | |||
| CN205536443U | 2016-08-31 | |||
| CN109958638A | 2019-07-02 | |||
| CN205536172U | 2016-08-31 | |||
| CN110529410A | 2019-12-03 | |||
| US20050260075A1 | 2005-11-24 | |||
| TWI633260B | 2018-08-21 | |||
| JP2011226725A | 2011-11-10 | |||
| EP3879112A1 | 2021-09-15 | |||
| JP2014231747A | 2014-12-11 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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