Gas-fired heating wall-mounted stove and operation control method thereof

Abstract

The invention provides a gas-fired heating wall-mounted stove which is used for a fan forcedly discharging smoke and an operation control method of the wall-mounted stove. The fan is a Hall fan provided with a Hall sensor, and a carbon monoxide concentration sensor is arranged in a smoke pipe or an exhaust pipe of the fan. The operation control method of the wall-mounted stove comprises the steps that 1, a power supply is turned on, and the gas-fired heating wall-mounted stove and a water pump are started after a heating system is full of water; 2, the fan is started, and after the Hall sensor detects that a fan motor normally operates, an ignition needle is started and meanwhile a gas valve is turned on to complete ignition; 3, after ignition is completed, a sensing needle detects a flame signal, the Hall sensor detects that the fan motor normally operates, and the carbon monoxide concentration sensor detects smoke; 4, the wall-mounted stove is automatically shut down once an abnormal situation occurs, the specific situation is that the sensing needle cannot detect the flame signal, or water pressure in the stove is insufficient, or the water temperature in the stove is too high, or the rotation speed of the fan motor is too low, or the carbon monoxide concentration in the smoke exceeds standard. The gas-fired heating wall-mounted stove can monitor whether smoke discharge during working of the wall-mounted stove is normal or not at the right moment, and it is effectively ensured that the wall-mounted stove safely operates.

Description

technical field [0001] The invention relates to a gas heating wall-hung boiler. Background technique [0002] The structure of the existing gas heating wall-hung boiler is as follows: figure 1 As shown, it includes main heat exchanger 1, hot water heat exchange integration 2, water pump 3, burner 4, gas valve 5, fan 9 and control center; main heat exchanger 1 and burner 4 are installed in a combustion hood 10; the main heat exchanger 1 has a main water inlet pipe 11 and a main water outlet pipe 12, a water pump 3 is connected in series on the main water inlet pipe 11, and an anti-dry thermostat 6 and a water pressure switch 7 are arranged on the main water outlet pipe 12, and the heat The water heat exchange integration 2 has a heat exchange water inlet, a heat exchange water outlet, a heating water inlet, a heating water outlet, a cold water inlet and a hot water outlet, and is respectively connected to the main water outlet pipe 12, the main water inlet pipe 11, the heati...

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Problems solved by technology

The disadvantages of this solution are: 1. There is hysteresis in the operating point of the differential air pressure switch. Instability, when the smoke exhaust is normal, the CO concentration in the flue gas has exceeded the standard, but at this time the wind pressure differential switch will not be disconnected; 2. The failure rate of the wind pressure differential switch is high, especially in northern my country In cold winter, condensed water tends to accumulate in the gas pipe of the air pressure differential switch, which is not conducive to the effective induction of air pressure by the air pressure differential switch, resulting in the failure of the gas furnace to operate normally.

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