High-efficiency low-temperature storage device
US12196471B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2020 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jun 25, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/004
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The storage device is adapted to store a plurality of objects, such as sample tube holders, at several low temperatures, e.g., at −80° C. and at −110° C. The storage device includes a storage chamber with a plurality of storage cassettes arranged in its bottom section. A cassette lift in its top section can be used to lift individual storage cassettes up and to move them to an access opening, where the contents of the storage cassette can be accessed. The bottom section is divided into several, concentric storage zones, with the innermost, first storage zone being colder than the outer, second storage zone. A first insulating wall separates the two storage zones. This design reduces the thermal losses of the storage device. A refrigerant circuit with a non-inflammable cryo-liquid is provided for carrying off heat from the first storage zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.