Wide dynamic range multi-zone drying method and apparatus for controlling product moisture
US4170073A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1977 |
| Grant date | Oct 9, 1979 |
| Priority date | — |
| Expiry date | Dec 1, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B25/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus is described for drying a product to a controlled moisture content. The apparatus comprising a first drying zone for receiving the product, a first regulating means for regulating the temperature within said first zone, a second drying zone for receiving the product from the first zone, a second regulating means for regulating the temperature within the second zone, means for measuring the moisture of the product after the product leaves the second zone, means for measuring the temperature in said first and second zones, means for controlling the second regulating means in response to the measured product moisture and the temperature of the second zone and means for cooperatively controlling the first regulating means in response to the measured product moisture and the temperature of the first zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.