Method of modifying masonry furnace by inserting electric heating elements through furnace top cover
US5377297A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Jun 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C1/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of combining electric heating with a wood-heated masonry furnace is provided. The masonry furnace has an outer jacket (1) and at least one fire chest (5, 6) arranged therewithin for burning the wood. Cheek conduits (8) between the outer surface of the fire chest and the inner surface of the outer jacket, are provided. The conduits are connected to the fire chest (5, 6) at one end and to a flue (9) at the opposite end. At least one electric resistor element (13) is installed inside the furnace. In order that electrical heating could be easily combined with any existing masonry furnace, holes (14) are drilled in the fire cover (10) of the furnace and the at least one resistor element (13) is arranged to hang from the fire cover (10) in the air space (8, 16) inside the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.