Fireplace heat transfer apparatus
US4519377A · kind A · utility
Inventor
Key dates
| Filing date | Jun 1, 1984 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jun 1, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24B1/192
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Fireplace heat transfer apparatus includes a main inner panel assembly adapted to be positioned across any opening to a fireplace and an auxiliary outer panel assembly pivotally mounted to the main assembly. The main assembly includes an inner transparent plate of glass and the auxiliary assembly includes an outer transparent plate of glass. The outer glass plate is thicker than the inner glass plate. The mounting relationship of the auxiliary frame to the main frame maintains the outer plate of glass in a spaced relationship to the inner plate of glass so as to define a heat transfer chamber between them. The auxiliary and main assemblies have respective frame structures which closes the chamber at its sides but provides the chamber with an open top and bottom for communicating the chamber with ambient air in the room surrounding the fireplace. By pivoting the auxiliary assembly about an axis defined across its lower end and relative to the main assembly the volume of the chamber may be changed in order to change the rate of convective thermosiphon flow of heated ambient air up through the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.