Gas water heater and exhaust gas control method thereof

Abstract

The invention discloses a gas water heater. The gas water heater comprises a combustion chamber, a fan, a constant-current regulating module and a control module, wherein the fan is used for conveying air to the combustion chamber and discharging the combustion tail gas in the combustion chamber out of the chamber; the constant current regulating module is used for collecting current signals of the fan and regulating the fan to run in constant current according to the current signals and control signals of the fan; and the control module is used for outputting the control signals of the fan to control the fan. The gas water heater has the advantages that when the exhaust is not smooth, the normal air supply in the combustion chamber can be guaranteed to carry out normal combustion and guarantee the safety. The invention also discloses an exhaust controlling method of the gas water heater.

Description

technical field [0001] The invention belongs to the technical field of electric appliance manufacturing, and in particular relates to a gas water heater and an exhaust gas control method of the gas water heater. Background technique [0002] The gas water heaters on the market now use a closed combustion chamber. During the combustion process, the air needs to be sent to the combustion chamber by means of fan blowing. role is crucial. Existing strong drum gas water heater adopts the mode of blowing air from the bottom, and there is no wind pressure switch in the whole machine structure, so it is impossible to accurately judge whether the exhaust system is normal. [0003] When there is a problem with the exhaust passage of the gas water heater, such as abnormal external wind pressure, the current of the fan will become smaller, which is prone to oxygen deficiency combustion, resulting in insufficient combustion and a large amount of CO. If this is the case for a long time, ...

AI Technical Summary

Problems solved by technology

The existing strong drum gas water heater adopts the way of blowing air, and there is no air pressure switch in the whole structure, so it is impossible to accurately judge whether the exhaust system is normal

[0003] When there is a problem with the exhaust passage of the gas water heater, for example, when the external wind pressure is abnormal, the current of the fan will become smaller, and oxygen deficiency combustion will easily occur, resulting in insufficient combustion and producing a large amount of CO. If this is the case for a long time, it will cause CO to leak into the user's room , leading to CO poisoning, very unsafe

Images