Method and apparatus and container for freeze-drying
US10809003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2017 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Sep 2, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B25/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of drying (sublimation or desorption) a frozen product stored in a container, comprising: a) capturing a thermal IR image of the container wall using a thermal IR camera; b) processing the thermal IR image by calculating temperature values of points located on the outer surface of the container wall; c) calculating a maximum temperature of the product in the container using a mathematical model that models heat flow and that models progress of the drying process; d) controlling an amount of power supplied to the container based on the calculated maximum product temperature and on a temperature safety_margin. A freeze drying apparatus for performing said method. A container having a specific shape for use in such a process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.