Adaptive gas water heater, system thereof and method for automatically judging gas types

Abstract

The invention discloses a forced blasting type adaptive gas water heater system and a method for automatically judging gas types for the forced blasting type adaptive gas water heater system. The method is characterized by including steps of starting a water heater by the aid of gas with a relatively low heat value at first, receiving data of inlet water temperature T1, outlet water temperature T2 and water flow m by the aid of a master controller, computing a heat load value QS according to a formula of Q=Cm(T2-T1), comparing a computation result with a heat load value QI of a theory of the gas and judging the computation result; and determining the type of the current gas, then switching to a control program corresponding to the gas, regulating current of a gas proportional valve and rotation speed of a fan, and accordingly realizing automatically identifying the type of the gas by the aid of a program. The data are fed back by a sensor module, and the heat load value QS is actually generated by the current gas. A traditional gas type selecting mode realized by means of dialing is replaced, a user does not need to know the type of used gas or manually set types of gas, and the forced blasting type adaptive gas water heater system is convenient in use.

Description

technical field [0001] The invention relates to the field of gas water heaters, and more specifically relates to a strong-drum self-adaptive gas water heater system and a method for automatically judging the gas type, as well as a structure of a strong-drum self-adaptive gas water heater. Background technique [0002] The main gas types used in gas water heaters are natural gas and liquefied gas. The main component of natural gas is methane, and liquefied gas is generally composed of propane, propylene (collectively referred to as carbon 3), butane, and butene (collectively referred to as carbon 4). The calorific value of natural gas is lower than liquefied gas. Due to the difference in calorific value, to produce the same amount of heat, the required amount of natural gas is more than that of liquefied gas. Therefore, corresponding to the same gas proportional valve opening (gas proportional valve current value), that is, the same gas volume, the thermal load generated by ...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing gas water heaters cannot automatically judge the gas type, and specifically propose a method in which the controller of the gas water heater automatically identifies the gas type through feedback processing of parameters such as load, and the controller automatically identifies the gas type by automatically identifying the gas type. After that, it will automatically switch to the working state of the corresponding gas to work on the adaptive gas water heater solution

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