GB2620570A

GB2620570A - Air supply for heating stoves

Info

Publication number: GB2620570A
Application number: GB2210113.3A
Authority: GB
Inventors: Hughes Glyn
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-10
Filing date: 2022-07-10
Publication date: 2024-01-17
Also published as: GB202210113D0

Abstract

A device for delivering air to heating stoves 4 comprises a slim hollow cuboid 1 which may be attached to the rear of a heating stove 4 and has an open face which can be fastened against a surface of the stove 4. On its opposite side of the open face is an opening suitable to be connected to a heating duct 2. On an upper part of the cuboid 1 are one or more orifices 6 open to the interior of the cuboid 1 such that the whole device may act as an air delivery system bringing fresh air against the surface of the stove 4 and delivering heated air 7 out of the orifices 6 on the upper part.

Description

TITLE: Air Supply for Heating Stoves INVENTOR: Glyn Hughes, Denver House, Main Street, WINSTER, Derbyshire, England DE4 2D11, a citizen of the United Kingdom

BACKGROUND:

The problem is that all fuel-burning appliances need to suck fresh air in to work. With domestic solid fuel stoves burning wood or coal type fuels this air requirement can be very substantial.

The usual solution is to provide an air vent in the room. But this can cause an unpleasant cold draught.

A possible solution is to provide a duct by which outside air is brought straight into the stove. But this only works when the stove door is closed. Once opened fumes and CO spilled into the room are simply left there. This matters a lot because CO is a vicious cumulative poison -once inhaled it is 'locked' into the body so that even a very tiny concentration can build up and up, which is why such 'direct' air supplies are not generally accepted as safe.

This invention is of a novel method of supplying outside air to stoves. It depends on the non-obvious realisation that it is not necessarily to actually deliver air directly to the stove, merely to bring it near, and if in doing so that air can be warmed it adds to the comfort, freshness and safety of the room. The invention consists of a five-sided, slim, cuboid box or 'cavity plate' affixed to a face of the stove and provided with a tube which brings outside air through a tube into a cavity plate at the back of the stove. When the stove is lit and starts sucking air in, the pressure in the room drops a little and air is pulled in through the tube. The fresh air warms up inside the cavity and rises through orifices in the cavity plate into the room, where as much as is needed will supply the stove in reaction to the pressure drop 'suck' caused by fuel burning and fumes being evacuated up a chimney, while gradually bringing (warmed) fresh air into the room, and carrying away stale air with its CO and fumes. When the stove is unlit, assuming the room is well-sealed, no air moves through the tube.

It has been found that this invention meets air delivery requirements for stoves while also circulating a 'bleed' of fresh, warmed, air to the room and evacuating stale air.

PRIOR ART:

1. US4402301A Wood-burning stove

DISCLOSURE:

The present invention will now be described with reference to the accompanying drawings, where drawing (1) is a schematic diagram, and drawing (2) is a visualisation of one possible implementation of the invention Item (4) is a heating stove, which, in operation, draws air in through ports which might typically be located at (5). Parts (1), (2) and (3) represent the invention, where (1) is a slim box or 'cavity plate' affixed to the rear of the stove such that its open side is against the stove and which is substantially closed-off all round but has an an opening, or openings (6) towards its upper part, the 'caity plate' is provided with a duct on the opposite side to the stove which can communicate air from a vent (3) The operation of the invention is that when the stove at (4) is lit and passing fumes and consumed air into the chimney it will cause a reduction in pressure through its own ports at (5), thereby reducing pressure in the room, as a result of which air will be drawn through vent (3) into the tube (2) and so into the 'cavity plate' (1) in which it will receive radiated heat from the rear of the stove, and being heated, rise through the 'cavity plate', exit through its upper holes (6) and mix with room air, both supplying some heated fresh air to the room and evacuating some stale air, suggested by the dotted line (7) and so delivers are to the stove.

By this means fresh outside air is delivered safely to a heating stove without unpleasant draughts and warmed fresh air is circulated into the room and stale air is gradually evacuated

Claims

CLAIMS: 1 A discrete device consisting of a slim hollow cuboid which may be attached to the rear of a heating stove and which has an open face which can be fastened against a surface of the stove and on its opposite side an opening suitable to be connected to an air duct and on the upper part of the cuboid one or more orifices open to the interior of the cuboid such that the whole device may act as an air delivery system bringing fresh air against the surface of the stove and delivering heated air out of the orifices on the upper part.
2 A device as described in claim 1 which is formed as a part of a heating stove