Electronic temperature control system
US4132355A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | May 18, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/121
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to a system for conserving energy used by temperature regulating units, such as space heaters and air conditioning units, by overriding local thermostatic controls therefor to prevent operation of the units except when a preselected temperature is reached at a master thermostat, the preselected temperature being selected to reduce energy consumption. A seven-day timer and gating circuit enable the overriding of the thermostatic controls during preselected periods of the day, for example during periods when the building is not in use. The system includes a transmitter for transmitting control pulses generated responsively to the timer and master thermostat over the electrical power distribution network of the building. Receivers connected to the local thermostatic controls detect pulses at particular frequencies, and shut-off the electrical power provided to the thermostatic controls responsive to the detected pulses, to thereby prevent operation of the associated temperature regulating units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.