Refrigerator damper with PTC heater actuation
US7174734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2005 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Nov 29, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2400/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damper in a refrigeration system having a first compartment and a second compartment connectable through a passageway is provided. The damper comprises a damper door, a temperature responsive unit, and a heating element. The damper door is moveable between an open position and a closed position. The temperature responsive unit is operatively coupled to the damper door. The heating element is coupled to one end of the temperature responsive unit to conductively heat the temperature responsive unit when activated. The temperature responsive unit expands to move the damper door to the open position in response to conductive heating from the heating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.