Electronic thermostat with heat anticipation and control method incorporating same
US4270693A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Aug 13, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic thermostat includes digital electronic apparatus for simulating heat anticipation so that in operation, the temperature of the room being heated or cooled does not exhibit excessive overshoot. A sensor generates a signal representative of temperature in the room. In a preferred embodiment, the system compares the temperature signal with a composite set point signal. The composite set point signal is generated by a data processor to effect the following system characteristics: (1) when the temperature signal remains constant and is equal to the set point, the system can cycle approximately six times an hour with a fifty percent duty cycle; (2) a relatively small change in temperature or set point will modify the duty cycle substantially; and (3) if the temperature and set point signals differ by more than a predetermined amount, the system will lock on or off, depending on which is greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.