Fluid heater control apparatus and method with overtemperature protection
US6839509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Feb 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6416
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fluid heater apparatus has fluid discharge temperature control to prevent temperature overshoot. A plurality of heater elements are employed and at least certain of the heater elements are independently controllable. At least one of the heater elements is employed as a “finishing” heater element, with the other heating elements deactivated to enable the “finishing” heater element to more slowly elevate the temperature of the fluid in the body from a first temperature reached by activation all or most of the heater elements to the predetermined discharge temperature. One of more of the heater elements may have a different power output than the other heater elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.