GAS CONTROL FITTINGS Russian patent published in 2014 - IPC F24C3/12 

FIELD: power industry.

SUBSTANCE: invention relates to gas control fittings for a gas heating furnace or for a similar plant. The gas control fittings for the gas heating furnace or for a similar plant with a thermostatic valve of safe ignition and the main valve, which together serve both to provide safe ignition and to distribute a gas flow into a flow supplied to the main burner and a flow supplied to an ignition burner of the furnace for gas heating, with a two-position valve providing activation and deactivation, which is located below the main valve on the way of the gas flow for the main burner, is controlled by a switch and arranged in a housing together with the rest auxiliary functional elements; with that, the switch is brought into action by means of a pusher moved in a longitudinal direction, which projects out of the housing space, where the gas flow passes, and the position of which is changed by means of a metallic bellows connected by a capillary tube to a temperature sensor; with that, the metallic bellows is supported from a control element acting on its position, brought into movement manually and/or by means of a drive assembly; with that, between the pusher and the control element there located is one or more bimetallic discs, by means of which an effect can be taken on a position of the metallic bellows depending on the environmental temperature due to the change of the size of the disc or the total size of the discs, which is measured in the pusher movement direction.

EFFECT: preventing the distortion of a controlled temperature value, which is caused by the environmental temperature variations, simplifying the design and providing a possibility of upgrading without any penetration into the space in which the gas flow passes.

5 cl, 3 dwg