Title:
AIR-COOLING REFRIGERATOR SUPPLYING AIR BY USING CENTRIFUGAL FAN
Document Type and Number:
WIPO Patent Application WO/2021/228277
Kind Code:
A1
Abstract:
An air-cooling refrigerator supplying air by using a centrifugal fan, comprising a bottom liner, an air channel back plate, and the centrifugal fan. A cooling chamber and a storage space are defined in the bottom liner; the air channel back plate is provided in the front of the back wall of the bottom liner, and defines an air supplying channel with the back wall of the bottom liner; the centrifugal fan comprises a volute and an impeller; the volute is arranged obliquely and upwards from front to back at the back of the cooling chamber, and a fan cavity and a gradually widening air exhaust cavity are defined at the interior of the volute; the fan cavity is formed into a continuous spiral; the gradually widening air exhaust cavity is configured to gradually widen backward from the fan cavity; the impeller is provided in the fan cavity; the inner wall face of the fan cavity is continuous and smooth. The inner wall face of the fan cavity in the volute of the present invention is continuous and smooth, and can smoothly guide a refrigerating air flow pressurized by the centrifugal fan to the gradually widening air exhaust cavity, thereby avoiding a turning point of the air flow, and reducing the energy loss of the refrigerating air flow. the present invention has strong practicability and can be promoted and used.
Inventors:
CHEN JIANQUAN (CN)
ZHU XIAOBING (CN)
FEI BIN (CN)
WANG CHANGZHI (CN)
FENG CHEN (CN)
ZHU XIAOBING (CN)
FEI BIN (CN)
WANG CHANGZHI (CN)
FENG CHEN (CN)
Application Number:
PCT/CN2021/100125
Publication Date:
November 18, 2021
Filing Date:
June 15, 2021
Export Citation:
Assignee:
QINGDAO HAIER REFRIGERATOR CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F25D17/06; F04D29/42
Foreign References:
| CN213040840U | 2021-04-23 | |||
| CN213040841U | 2021-04-23 | |||
| CN209893738U | 2020-01-03 | |||
| CN110905854A | 2020-03-24 | |||
| CN203641106U | 2014-06-11 | |||
| EP2628416B1 | 2015-01-21 | |||
| US5531267A | 1996-07-02 |
Other References:
See also references of EP 4174409A4
Attorney, Agent or Firm:
WISEAST INTELLECTUAL PROPERTY LAW FIRM (CN)
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