FLAME LENGTH ADJUSTMENT DEVICE OF GAS LIGHTER FOR SMOKING

摘要

PURPOSE:To form a flame of a certain length always at the pilot flame port even if there is a variation in the gas pressure in a fuel tank due to a variation in the temperature, atmospheric pressure range, or the residual fuel quantity in the tank by leading the fuel gas in the fuel tank to a pressure regulating chamber and regulating it to a certain pressure and leading it to the burner nozzle. CONSTITUTION:When an opening and closing means is at the position to open a valve and the fuel gas is led out towards a burner nozzle, a shaking valve body 15 operates in the state of vibration and swings between the closed valve position and open valve position and holds the gas pressure in a pressure regulating chamber 4 constant. As a result of holding constant the pressure in the pressure regulating chamber 4, the flow rate of the gas that is jetted out from the burner nozzle is constant and it is possible to maintain the flame length constant because the cross-sectional area of the channel from the pressure regulating chamber 4 to the burner nozzle is considered constant. When a set flame length is changed, a pressure regulating thread 22 is rotated to advance or retreat in the axial direction. With this movement the spring force of a spring 24 changes and a diaphragm rod 18 moves up-and- down to vary the displacement amount of a diaphragm 22 and the gas pressure in the pressure regulating chamber 4 is varied.