Air-cooled refrigerator supplying air through centrifugal fan
US12398940B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 15, 2021 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Jan 12, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D17/062
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air-cooled refrigerator supplying air through a centrifugal fan, comprising a bottom liner, an air duct back plate, and the centrifugal fan. A cooling chamber and a storage space are defined in the bottom liner; the air duct back plate is provided in front of a back wall of the bottom liner, and defines an air supply duct with the back wall of the bottom liner; the centrifugal fan comprises a volute and an impeller; the volute is arranged obliquely upwards from front to back at the back of the cooling chamber, and a fan cavity and a gradually widened exhaust cavity are defined in the volute; the fan cavity is formed into a continuous spiral; the gradually widened exhaust cavity is gradually widen backwards from the fan cavity; the impeller is provided in the fan cavity; and the inner wall face of the fan cavity is continuous and smooth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.