Heater control for an air dryer
US9803778B2 · kind B2 · utility
3Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1963
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air dryer having a heater element associated with its valves to prevent freezing at cold temperatures. The air dryer includes a temperature sensor and an electronic controller that reads the temperature sensor and inhibits actuation of the valves whenever the temperature of valves is below freezing or a predetermined temperature that indicates a risk for freezing until the valves have been sufficiently warmed by the heater to avoid freezing during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.