Control and method for operating an electric water heater
US7221862B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Dec 13, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H15/37
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A water heater control for an electric water heater operates according to at least one fixed hardware and/or software temperature limit and a variable software temperature limit. The control monitors a temperature of water in a tank of the electric water heater to determine if the temperature exceeds the fixed hardware and/or software temperature limit. If the temperature exceeds the fixed temperature limit, the control turns off one or more heating elements of the electric water heater. The variable software temperature limit is indicative of a desired user temperature and an offset temperature. If the temperature exceeds the variable software temperature limit, the control turns off the one or more heating elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.