초록 ▼

This invention relates to the operation of unvented gas fired appliances and enhances the safety of effectively controlling the flow of gases to an unvented gas heater, such as gas fired fireplace logs, while enabling a thermostat to control the temperature of the heated area by combining a thermoco

This invention relates to the operation of unvented gas fired appliances and enhances the safety of effectively controlling the flow of gases to an unvented gas heater, such as gas fired fireplace logs, while enabling a thermostat to control the temperature of the heated area by combining a thermocouple for safety and a thermopile for operation of the thermostat.

대표청구항 ▼

An apparatus for controlling the temperature of an area heated by an unvented gas fired appliance, the unvented gas fired appliance having a main burner and a pilot having an opening where flame is produced by gas through a gas supply line having a first electromagnetic gas valve that is operable to

An apparatus for controlling the temperature of an area heated by an unvented gas fired appliance, the unvented gas fired appliance having a main burner and a pilot having an opening where flame is produced by gas through a gas supply line having a first electromagnetic gas valve that is operable to control the flow of gas to the main burner and to the pilot and a thermocouple positioned to be heated by the pilot flame and operably connected to the first electromagnetic gas valve, wherein the improvement comprises a thermopile positioned to be heated by the pilot flame, a second electromagnetic gas valve that is operable to control the flow of gas to only the main burner, and a thermostat operatively connected to the thermopile and to the second electromagnetic gas valve, whereby the temperature of the area is controlled by setting the thermostat to the desired temperature.