Combustion – Electrical or mechanical igniter correlated with burner feed
Patent
1996-06-03
1998-06-30
Dority, Carroll B.
Combustion
Electrical or mechanical igniter correlated with burner feed
431255, 126512, F23Q 104
Patent
active
057724237
DESCRIPTION:
BRIEF SUMMARY
REFERENCE TO RELATED APPLICATIONS
This application claims the priority of International Application No. PCT/GB95/00848, filed Apr. 13, 1995 which in turn claims priority of Great Britain Application No. 9407266.7, filed Apr. 13, 1994, which is incorporated herein by reference.
The present invention relates to a control for a gas fire and to a gas fire incorporating such a control.
More particularly the present invention relates to a control for use in controlling a gas burner in a radiant convector or a simulated solid fuel gas fire. Conventionally a simulated solid fuel gas fire comprises a bed of randomly arranged simulated solid fuel elements eg. coals and/or logs, located within a fireplace opening which connects with a flue and usually has a decorative surround. The simulated solid fuel elements rest on a gas burner usually comprising a tray filled with sand or vermiculite, through which gas/air mix supplied by a gas/air mix supply control, is passed. This control for the gas/air mix is located below the tray ie. below the bed of simulated coals and located behind a removable decorative fender. Similarly in certain radiant convector fires, especially flush fitting radiant convector fires, the control is located behind a decorative fender in the lower part of the fire. Thus to ignite and/or adjust such fires, A person must bend down or get down on his/her knees and first remove the decorative fender. This can and does cause problems, especially as ignition and adjustment are often separate controls.
The aim of the present invention is to provide a simple, complete control for a gas fire, which control is readily accessible and operable and suitable for use in flush fitting fireplace installations.
According to the present invention there is provided a control for a gas fire, the control comprising a slide member connected via a linkage to a gas burner control lever whereby movement of said slide member causes said slide member to move said gas burner lever control lever between two end regions of available movement, to control a valve and the feed therethrough of gas from a gas inlet to at least one burner, one microswitch being operable by the control lever to activate an igniter towards one end region of the available movement of the control lever, and another microswitch being operable by the control lever towards the other end region of available movement to activate an interrupter which can close off the supply of gas.
In a preferred embodiment of the present invention an elongate aperture is provided in a support member which is a vertical part of a decorative surround of a fireplace with the elongate aperture being located towards the upper end region of said vertical part. Alternatively the aperture may be located in a horizontal section of the surround. Part of the slide member projects through the aperture and may, if desired, carry a decorative and easily grippable knob to both enhance aesthetics and facilitate use. The linkage connected to the slide member, is located behind said vertical part of the surround and extends downwardly to a pivotal control lever. Preferably the linkage comprises a single rigid, elongate member, pivotally connected to both the slide member and the control lever. Alternatively a multi-part linkage may be used or a Bowden cable may be located between the slide member and the control lever.
Preferably the control lever is pivoted to control a gas flow control valve eg. a ball valve or tapered plug valve, located below a simulated solid element fuel bed of a fire located in the fireplace, the valve controlling the feed of gas/air mix from a gas inlet, preferably via a flame failure device, to one or two burners. The control lever also preferably engages the microswitches during its pivotal movement, one switch being the "on" switch which activates an electronic igniter for ignition at one end region of the slide members movement, and the other switch being the "off" switch which is engageable after compressing a spring at the other end region of the slide members m
REFERENCES:
patent: 1898863 (1933-02-01), Williams
Dority Carroll B.
Valor Limited
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