PTC heater device
US4822980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/141
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating device adapted to be disposed in an opening in the side wall of a compressor that is used with an air conditioner or refrigerator so that fluids in the casing of the compressor can be vaporized. The heating device includes a PTC thermistor disposed in a housing and a generally cylindrical receptacle disposed about the housing. The housing includes at least one outwardly extending, resilient, heat dissipating, arcuate fin overlying the outer surface of the housing in spaced relaton thereto. The fin is biased outwardly to engage the inner walls of a receptacle. The receptacle is welded into the opening in the sidewall of the casing of the compressor. The fins form a snug fit with the housing and provide a good heat transfer contact with the receptacle. Lead-in wires extend from the PTC thermistor to the outside of the housing so that the PTC thermistor can be connected to a power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.