Washing machine water temperature detection and control method and washing machine

Abstract

The invention provides a washing machine water temperature detection control method and a washing machine. The water temperature detection control method includes the steps that the washing machine receives a water heating signal, an initial temperature T0 of washing water and a target temperature T of heating are obtained, and theoretical heating time t is calculated according to the water heating formula that P*t equals to C* rho*V*(T-T0); a real-time temperature value of the washing water is obtained at least at one moment in the theoretical heating time t and compared with a theoretical heating temperature value at the moment to obtain a correction coefficient K; a final theoretical heating time t is obtained through calculation according to the theoretical heating time t and the correction coefficient K, when the water is heated to the final theoretical heating time t, a final washing water temperature T is obtained, and whether the final washing water temperature T is in an allowable range of a target temperature or not is judged. The washing machine water temperature detection control method reduces measurement frequency of a temperature detection device, guarantees measurement precision, and prolongs the service life of the washing machine.

Description

technical field [0001] The invention relates to the technical field of heating temperature control methods, in particular to a washing machine water temperature detection and control method and the washing machine. Background technique [0002] Along with improving day by day of people's living standard, washing machine has gradually become one of necessary household appliances in people's family, and most people regard washing machine as the main tool of washing clothes. In order to increase the washing effect of the washing machine, some washing machines will add a water heating function, especially for drum washing machines, the water heating function is more common. The washing machine with water heating function is equipped with a heating device in the outer cylinder, and the washing water is heated to the set temperature value by controlling the heating device. During this process, the temperature of the washing water needs to be detected to ensure that the washing wat...

AI Technical Summary

Problems solved by technology

However, the temperature sensor essentially uses the temperature-sensitive characteristics of the thermistor to detect temperature, and the thermistor is essentially a resistive element. Under the influence of the use environment and frequency of use, the measurement accuracy of the thermistor and The service life will be reduced

[0004] Therefore, the temperature sensor in the washing machine with water heating function is in a water-filled environment and is always in working condition, which will affect its measurement accuracy and service life

Images