Dielectric dryer drum
US9200402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2014 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Jul 21, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F34/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Methods and apparatus for heating an object 9 that includes an absorbed medium. A method embodiment comprises: placing the object 9 including the medium into an enclosure 16; initiating a heating process by subjecting the object 9 and medium to a capacitive AC electrical field generated by an RF power source 2 at a single low frequency; controlling the heating process by taking real time measurements; and making real time adjustments to the RF power source 2 in response to the real time measurements. The object 9 substantially absorbs the medium in a first “cool” state, and therefore has a maximum weight in the first “cool” state. The object 9 is substantially free from the medium in a second “heated” state, due to substantial release of the medium from the object 9. The released medium is evaporated during the heating process. The heating process is completed when the object 9 is substantially transitioned into the second “heated” state. The method further comprises causing an air flow 11 inside the enclosure 16 to carry away evaporated medium out of the enclosure 16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.