Heat-storage material and refrigerator and cooling container that include the heat-storage material
US11130896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E70/30
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A heat-storage material that provides a sufficiently large amount of thermal energy as a latent-heat storage material including a semiclathrate hydrate and that improves hysteresis between the solidifying temperature and the melting starting temperature and a refrigerator and a cooling container that include the heat-storage material are provided. The heat-storage material that changes phase at a predetermined temperature includes water, a main agent including a quaternary ammonium salt that forms a semiclathrate hydrate, a pH adjuster that maintains alkaline properties, and a nucleating agent that generates a cation that exhibits positive hydration. In such an aqueous solution maintained to be alkaline, the nucleating agent becomes a nucleus in solidification, and thus, the temperature difference between the solidifying temperature and the melting temperature can be decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.