A gas catalytic combustion element and a gas powered heating...

F - Mech Eng,Light,Heat,Weapons – 23 – D

Patent

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Details

F23D 14/18 (2006.01)

Patent

CA 2580909

A glue gun (1) comprising a body member (3) in which a glue accommodating and melting chamber (4) for receiving stick glue is formed and a combustion chamber (10) is also formed for accommodating a gas catalytic combustion element (14). A temperature responsive valve (25) controls the supply of fuel gas to the combustion chamber (10) for maintaining the temperature of the body member (3) at approximately 14O~C. A thermal mass (26) provided by a screw (27) is clamped onto a tab shaped portion (30) of the gas catalytic combustion element (14), and maintains the temperature of the tab shaped portion (30) above the ignition temperature of the gas catalytic combustion element (14) during periods of fuel gas interruption to the combustion chamber (10), so that when the temperature responsive valve (25) restores the supply of fuel gas, the tab shaped portion (30) immediately commences to convert fuel gas to heat by catalytic reaction, thus rapidly raising the temperature of the gas catalytic combustion element (14) to its ignition temperature.

L~invention concerne un pistolet à colle (1) comprenant une pièce de corps (3) dans laquelle est formée une chambre de réception et de fusion de colle (4) pour recevoir un bâton de colle et dans laquelle est également formée une chambre de combustion (10) pour recevoir un élément de combustion catalytique de gaz (14). Une valve sensible à la température (25) régule l~apport de gaz combustible dans la chambre de combustion (10) en vue de maintenir la température de la pièce de corps (3) à environ 140°C. Une masse thermique (26) fournie par une vis (27) est fixée sur une partie en forme de languette (30) de l~élément de combustion catalytique de gaz (14), et maintient la température de la partie en forme de languette (30) au-dessus de la température d~inflammation de l~élément de combustion catalytique de gaz (14) pendant les périodes d~interruption de l~apport de gaz combustible dans la chambre de combustion (10), de sorte que, lorsque la valve sensible à la température (25) rétablit l~apport de gaz combustible, la partie en forme de languette (30) se mette immédiatement à convertir le gaz combustible en chaleur par réaction catalytique, en faisant ainsi rapidement monter la température de l~élément de combustion catalytique de gaz (14) jusqu~à sa température d~inflammation.

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