Dry burning judgment method and device and water storage type heating device

Abstract

The invention is suitable the field of electronics and electrical appliances and provides a dry burning judgment method. The method includes the following steps that when after heating of a water storage type heating device is started, the current temperature rise velocity VT of the water storage type heating device within a preset current temperature rise time range is acquired; whether the current temperature rise velocity VT approaches a preset full-water temperature rise velocity VTy or approaches a preset dry burning temperature rise velocity VTe is judged; and when the current temperature rise velocity VT approaches the preset dry burning temperature rise velocity VTe, it is judged that the water storage type heating device is in a dry burning state. According to the dry burning judgment method provided by the embodiment of the invention, by judging whether the current temperature rise velocity VT approaches the preset dry burning temperature rise velocity VTe or not, when it is judged yes, it is judged that the water storage type heating device is in the dry burning state, a power source of a heater of the heating device can be automatically powered off, and the safety performance of the water storage type heating device is improved; and meanwhile, due to the design adopting only one temperature sensor, the production cost of the water storage type heating device is effectively saved.

Description

technical field [0001] The invention belongs to the field of electronic appliances, and in particular relates to a method and device for judging dry burning and water storage type heating equipment. Background technique [0002] At present, there are various water heaters on the market, such as gas-fired water heaters, solar water heaters, water storage water heaters, etc. With the development of society and the improvement of people's living standards, people have higher and higher safety requirements for water heaters. Type water heater dry burning is an aspect that people pay close attention to. [0003] Storage-type water heaters in the prior art generally adopt the following two methods to ensure the safety performance of the storage-type water heater. One method is to use two temperature sensors to judge and detect the dry state of the water heater; the other method The dry burning state of the water heater is judged and detected through a temperature sensor and a wat...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for judging dry burning, which aims to solve the problems of high risk of hardware failure and high production cost of the water storage water heater using multiple sensors

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