Automatic fuel gas supercharging device and method of gas water heater

Abstract

The invention discloses an automatic fuel gas supercharging device of a gas water heater. The automatic fuel gas supercharging device comprises a controller and a proportional valve controlled by the controller; a gas inlet / gas outlet of the proportional valve or a fuel gas channel in the front portion of the gas inlet / gas outlet of the proportional valve is internally provided with a pressure sensor and a fuel gas supercharging pump, and the controller receives fuel gas pressure detected by the pressure sensor, enables the pressure to be compared with a preset value, and accordingly controls starting and stopping or running of the fuel gas supercharging pump. The invention further discloses an automatic fuel gas supercharging method of the gas water heater. The method includes the steps of obtaining a before-valve pressure value of the proportional valve; comparing the obtained before-valve pressure value with a preset pressure value scope, and starting and controlling the fuel gas supercharging pump to work when the before-valve pressure value is smaller than the preset pressure value scope; and keeping the before-valve pressure value to be within the preset pressure value scope. According to the automatic fuel gas supercharging device and method, the water heater cannot achieve constant-temperature burning when the before-valve pressure value is too small, the controller controls opening and closing of the fuel gas supercharging pump and adjusts the output pressure of the fuel gas supercharging pump, and automatic control over the fuel gas supercharging pump is achieved.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a gas automatic booster device and method for a gas water heater. Background technique [0002] In the existing gas water heaters, the gas valve is generally a gas proportional valve, which can adjust the secondary pressure and stabilize the pressure; the machine can adjust the outlet pressure of the gas valve and stabilize the pressure at will through the control of the controller according to the combustion needs, but The premise is that the inlet pressure of the gas valve must meet the requirements. The rated pressure before the valve of natural gas is 2000Pa, and the service range is 1000-3000Pa. During the use of gas water heaters, due to the peak period of gas consumption or the small diameter of the pipeline, there are often problems such as insufficient gas pressure, which causes the gas water heater to fail to ignite and burn normally, affecting the normal producti...

AI Technical Summary

Problems solved by technology

During the use of gas water heaters, due to reasons such as the peak period of gas consumption or the diameter of the pipeline is too small, there are often problems such as insufficient gas pressure, which causes the gas water heater to fail to ignite and burn normally, which affects the normal production and use of the gas water heater.

[0003] The existing technology uses a gas nozzle with a larger aperture, but this type of nozzle will reduce the gas pressure required for use, and the gas nozzle cannot be arbitrarily enlarged, which will affect the introduction of the primary air volume and affect the combustion

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