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1. US4646712 - Solid fuel heating appliances

Office
United States of America
Application Number 06761590
Application Date 29.07.1985
Publication Number 4646712
Publication Date 03.03.1987
Grant Number 4646712
Grant Date 03.03.1987
Publication Kind A
IPC
F24C 1/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
COTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
1Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of groups F24C3/-F24C9/183; Stoves or ranges in which the type of fuel or energy supply is not specified
14Radiation heating stoves or ranges, with additional provision for convection heating
B67B 7/00
BPERFORMING OPERATIONS; TRANSPORTING
67OPENING OR CLOSING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
BAPPLYING CLOSURE MEMBERS TO BOTTLES, JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
7Hand- or power-operated devices for opening closed containers
F24B 1/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
1Stoves or ranges
F24B 1/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
1Stoves or ranges
02Closed stoves
F24B 5/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
5Combustion-air or flue-gas circulation in or around stoves or ranges
F24B 5/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
5Combustion-air or flue-gas circulation in or around stoves or ranges
02in or around stoves
04the air or gas passing downwards through the bottom of the stove or fire grate
CPC
F24B 1/006
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS
1Stoves or ranges
006incorporating a catalytic combustor
B67B 7/00
BPERFORMING OPERATIONS; TRANSPORTING
67OPENING, CLOSING ; OR CLEANING; BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
BAPPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
7Hand- or power-operated devices for opening closed containers
F23B 5/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
5Combustion apparatus with arrangements for burning uncombusted material from primary combustion
04in separate combustion chamber; on separate grate
F24B 1/026
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
BDOMESTIC STOVES OR RANGES FOR SOLID FUELS
1Stoves or ranges
02Closed stoves
026with several combustion zones
Applicants Vermont Castings, Inc.
Inventors Ferguson Robert W.
Andors Derik K.
Crossman William W.
Agents Wolf, Greenfield & Sacks
Priority Data 06555511 28.11.1983 US
Title
(EN) Solid fuel heating appliances
Abstract
(EN)

Solid fuel heating appliance having high thermal efficiency and low levels of polluting emissions. The heating appliance includes an insulated secondary combustion chamber where a mixture of exhaust gases from the primary combustion chamber and secondary air is burned. A catalytic igniter is provided in the secondary combustion chamber to lower the ignition temperature of the unburned volatile gases from the primary combustion chamber. Regenerative feedback structure is provided in heat exchange relationship with the exhaust from the secondary combustion chamber to preheat the mixture entering the secondary combustion chamber, catalytic igniter, and the regenerative heat transfer assure substantially continuous combustion within the secondary combustion chamber even when conditions in the primary combustion chamber change. In a retrofit embodiment for existing stoves, a sheet metal partition in the secondary combustion chamber allows heat transfer from spent gases to the entering mixture of exhaust and secondary air. In a unitary stove embodiment, secondary air is heated by the spent gases which proceed to remote heat exchangers separated from the primary firebox by ventilated air spaces. To prevent room emissions, the stove door is sealed by a vented double gasket system.

Also published as
NO19863690
NO19863691
NO19863692
NO19852963