Gas boiler has a blower to assist the burner with a bi-metal deflector to divert air into a control pressure channel according the dropping combustion air temperature

摘要

The gas boiler has a blower (1) to deliver combustion air through a channel to the burner, linked to the gas control unit for the burner through a control pressure channel (4). A bi-metal flow deflector (7) diverts the air flow into the opening (6) of the control pressure channel through its free end (7'), according to a declining combustion air temperature in the combustion air channel.