A primary pressure self-regulating gas water heater and its control method

Abstract

The invention discloses a gas water heater with a primary pressure self-adjustment function and a control method thereof. The gas water heater comprises a combustion fire grate, a fire grate adjusting valve, a gas proportional valve, a main gas switch valve, a fan, a pressure sensor, a controller and a gas pipeline. One end of the gas pipeline is connected with the combustion fire grate, and the other end of the gas pipeline communicates with a gas inlet. The fire grate adjusting valve, the gas proportional valve and the main gas switch valve are sequentially arranged on the gas pipeline from top to bottom. The pressure sensor is arranged at the position, between the main gas switch valve and the gas inlet, of the gas pipeline. The controller is electrically connected with the control end of the fire grate adjusting valve, the control end of the gas proportional valve, the control end of the main gas switch valve, the control end of the fan and the control end of the pressure sensor. The water heater can autonomously sense the change condition of gas pressure and make a response fast according to the pressure change of gas, it is guaranteed that a user can use the water heater at high air pressure and low air pressure, and the adaptability of the gas water heater is improved to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of water heaters, and in particular relates to a self-adjusting primary pressure gas water heater and a control method thereof. Background technique [0002] Gas water heaters have become a necessity in family life. Especially the gas water heater with constant temperature function provides us with various hot water with constant temperature: before going to bed, we can take a hot bath comfortably to relieve fatigue; in cold winter, we will not let us use Wash vegetables with cold water; in the morning, let us wash comfortably with warm water; after meals, wash dishes with suitable hot water. [0003] However, just when we are becoming more and more inseparable from it, it brings us a series of problems: when the gas pressure is higher or lower than the national standard pressure, various failures will occur in the water heater, such as flameout, Excessive emissions and reduced combustion efficiency. In s...

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Problems solved by technology

[0003] However, just when we are becoming more and more inseparable from it, it has brought us a series of problems: when the gas pressure is higher or lower than the national standard pressure, various failures will occur in the water heater, such as flameout, Excessive emissions and reduced combustion efficiency, etc.

In severe cases, it will also lead to the inability to use the water heater, which brings inconvenience to our life

[0004] The existing domestic gas water heaters cannot realize the automatic detection and adjustment of gas pressure, so that when the gas pressure is low, the water heater cannot sense it, but still operates according to the program when the gas pressure is normal

On the one hand, due to the low gas pressure, the gas supply is insufficient, causing the water heater to go out; The efficiency is reduced, which reduces the water production capacity of the water heater, resulting in a cooler outlet water temperature

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