Gas burner or hob, independent of a mains supply, has safety valve at the gas inflow held open by a magnetic unit energized from a thermo element at the gas flame and a cut-off switch to close the valve

摘要

The control system for a gas burner or gas hob, which is independent of a mains gas supply, has a safety valve (10) in a valve body (12) with a spring (16) to open and close the gas inflow selectively. A thermo element (22) is placed near the gas flame to generate a voltage through heat, linked to a magnetic unit (18) to develop a magnetic force and hold the safety valve open. A cut-off switch (26) disconnects the magnetic unit, and the safety valve closes the gas inflow. The cut-off has a timer, independent of a mains supply, to operate energy-saving switches in series or parallel with the thermo element to break or reduce the current through the magnetic unit. The timer is powered through a solar cell, and has a LCD display.