Refrigerating and freezing device
US11280537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2017 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2317/061
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A refrigerating and freezing device comprises a box body, a modified atmosphere film assembly and a suction pump. The box body has an inner container, a casing and a heat insulation layer; the inner container is internally provided with a storage space; the modified atmosphere film assembly is configured in such a way that more oxygen, relative to nitrogen, of a gas flow in a space around the modified atmosphere film assembly penetrates a modified atmosphere film and enters a rich-oxygen gas collecting cavity; and the suction pump is provided in the heat insulation layer, and an inlet end of the air extracting pump, through a pipeline, is in communication with the oxygen-rich gas collecting cavity of the modified atmosphere film assembly to pump and discharge the gas penetrated into the oxygen-rich gas collecting cavity out of a storage container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.