Self-calibrating automatic controller to determine end of cycle and track dryer cycle efficiency
US10472761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/56
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An apparatus and method for controlling the drying cycle in a clothes dryer. The dryer controller measures differences between air inlet temperature and temperature of an air outlet, drum, and/or drum contents, from which it first estimates water weight of original drum contents based on changes in this temperature differential over a first period of time. A first dryness threshold is later reached when the amount of remaining water estimated by the temperature difference profiling reaches a threshold. A cooling cycle is then performed, followed by an estimation of remaining drying cycle time from estimating remaining water based on temperature differentials. The heater is then switched back on for the remaining time, after which a cooling cycle is preferably performed before ending the dryer cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.