Heating device using photodetector to detect temperature and method for protecting the same
US9377214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H2250/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heating device includes a housing having a flow channel, a heater disposed in the flow channel, an optical rod, a light guider and a photodetector. The optical rod has a transparent body, a first end portion, and a second end portion located inside the housing. The light guider is provided at the second end portion for guiding lights emitted by the heater toward the first end portion. The photodetector is located around the first end portion and faces the second end portion for indirectly receiving the lights emitted by the heater to the light guider through the transparent body. The temperature of the heater can be measured efficiently and timely by using the photodetector having a high responding speed, such that an overheat or damage of the heater can be prevented by controlling the heater based on the measured temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.