Washing machine water temperature detection and control method and washing machine

Abstract

The invention provides a washing machine water temperature detection and control method and a washing machine. The water temperature detection and control method includes the following steps: the washing machine receives a water heating signal; and obtains the water inlet amount m of the washing machine and the initial temperature T of the washing water. 0 and heating target temperature T 目标 ; According to the water heating formula P*t=C*m*(T 目标 ‑T 0 ), calculate the heating time t for heating the wash water to the target temperature 目标 ; Execute heating until heating time t 目标 then stop. The washing machine water temperature detection and control method of the present invention reduces frequent temperature detection during the heating process, simplifies the control program of the heating process, comprehensively utilizes various detection devices of the washing machine, while ensuring the measurement accuracy of the temperature detection device and extending its service life.

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...

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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

[0005] In addition, with more and more functions of the washing machine, the number of sensors installed on the washing machine also increases accordingly, but the frequency of use of some sensors is too low, and their installation costs are very high, so that they cannot be fully utilized.

For example, in a washing machine with a weighing function, the sensor used for weighing is used for a limited number of times during the entire washing process, but the manufacturing and installation costs of the sensor used for weighing are relatively high, resulting in "the gimmick is greater than the reality" The phenomenon

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