Dishwasher and washing control method and system thereof

Abstract

The invention belongs to the technical field of dishwasher control, and provides a dishwasher and a washing control method and system thereof. In the process of washing the tableware by the dishwasher, the motor drive circuit controls the washing motor to run in the way of switching between high and low speed. The average operating current of the motor to ensure that the temperature rise of the motor drive circuit does not exceed the standard; at the same time, the operating current of the washing motor is detected successively according to the preset detection times. The normal frequency of the motor current is superimposed and counted once; after the detection is completed, if the washing motor is judged to be overloaded according to the normal frequency of the motor current and the preset detection frequency, the motor drive circuit is controlled to stop working, so that the overload of the washing motor can be accurately judged and shut down in time. Cut off the motor drive circuit to avoid damage to components due to temperature rise.

Description

technical field [0001] The invention belongs to the technical field of dishwasher control, and in particular relates to a dishwasher and a washing control method and system thereof. Background technique [0002] At present, when the existing dishwashers wash the tableware, the washing method adopted is to pump water from the inner tank to the spray arm through the washing motor at a certain speed, and then wash it with the water column sprayed out of the spray arm. tableware. Because the flow velocity and pressure of the water column sprayed out by the spray arm depend on the rotation speed of the washing motor, the greater the rotation speed of the washing motor, the faster the flow velocity and the greater the pressure of the water column, and the better the washing effect of the tableware. However, the higher the rotation speed of the washing motor, the greater the loss of the corresponding motor drive circuit, the higher the heat generation and the higher the temperatur...

AI Technical Summary

Problems solved by technology

However, the higher the rotation speed of the washing motor, the greater the loss of the corresponding motor drive circuit, the higher the heat generation and the higher the temperature rise; in addition, if the washing motor runs abnormally due to excessive load, the It will cause the current of the motor drive circuit to increase, thereby increasing the temperature of the motor drive circuit, which in turn will cause the temperature of the components to be damaged due to a sharp rise

Therefore, the washing method of the existing dishwasher cannot control the high-speed operation of the washing motor to improve the cleaning effect of the tableware. It can not only ensure that the temperature rise of the motor drive circuit does not exceed the standard when the washing motor is in normal operation, but also ensure that the washing motor is damaged due to load. Make an accurate judgment when it is too large and abnormal operation, and shut down the motor drive circuit to avoid damage to components due to a sharp rise in temperature

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