Gas heating device, with a catalytic burner and regulating member

A heating device for burning a pressurized fuel gas comprising:

• means for controlling a current of the pressurized fuel gas;
• an injector for ejecting a gas jet from the gas current flowing from said means for controlling;
• means for entrainment of primary air by the gas jet, in order to form a mixture of gas and air to be burned;
• a transport duct for transporting the mixture to be burned from the means for entrainment;
• a catalytic burner comprising a catalytic combustion structure which is traversed by the mixture flow an inlet face of the catalytic combustion structure in fluid communication with a downstream end of the transport duct, to an outlet face of the catalytic combustion structure which emits combustion vapors of the burned mixture;
• and
• means for regulating the flow rate of the mixture to the catalytic burner comprising an element sensitive to the temperature generated by the combustion in said burner;
• wherein said means for regulating the flow rate of the mixture is arranged downstream of the means for the entrainment of primary air and upstream of the catalytic combustion structure, said regulating means further comprising a sealing flap which can move between two positions in response to the temperature detected by the temperature sensitive element, said two positions being a first position when a relatively high value of the temperature is detected, and a second position which ensures the passage of a maximum flow rate of the mixture to be burned to the catalytic structure when a relatively low value of the temperature is detected.