A washing machine unbalance detection method and washing machine

Abstract

The invention provides a method for detecting imbalance of a washing machine. The method comprises the following steps that a dewatering timing sequence is operated, and an offset detecting pre-dewatering action is executed; a sensor module executes the offset detecting action to detect the eccentric condition of the machine in real time, and an initial dewatering curve is set preliminarily; a low-speed dewatering action is executed, and the sensor module detects the low-speed offset in real time; whether the detected low-speed offset exceeds a limit value or not is judged; if yes, a low-speed offset correction action is executed; if not, the next step is executed; a high-speed dewatering action is executed, and the sensor module executes the high-speed offset in real time; whether the high-speed offset of the high-speed dewatering action exceeds a limit value or not is judged; if yes, a high-speed eccentric correction action is executed, and if not, the process is finished with the high-speed dewatering action. According to the method, active real-time detection is achieved, the phenomenon of bucket colliding is achieved, and the service life of the washing machine is prolonged.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to a washing machine unbalance detection method and a washing machine. Background technique [0002] As a daily household appliance, the washing machine liberates people from the work of washing clothes, so it is popular among users. It mainly includes a cabinet, an outer tub, an inner tub, a pulsator, a motor and a control panel; the pulsator is located in the inner tub. The inner barrel is located in the outer barrel, and the outer barrel is suspended on the box body through a suspender, and the control board controls the motor for washing and dehydration. When the washing is completed, the washing machine dehydrates. The existing dehydration method of the automatic pulsator washing machine is that the clothes move under the drive of the inner barrel, and the dehydration effect is achieved through the action of centrifugal force. When the clothes are not evenly distributed, they ar...

AI Technical Summary

Problems solved by technology

When the washing is completed, the washing machine dehydrates. The existing dehydration method of the automatic pulsator washing machine is that the clothes move under the drive of the inner barrel, and the dehydration effect is achieved through the action of centrifugal force. When the clothes are not evenly distributed, they are easy to vibrate and bump during dehydration. The barrel will shift in severe cases, which will affect the quietness of the washing machine and the life of the motor and mechanical structure.

[0003] The existing fully automatic washing machine avoids hitting the barrel by hitting the anti-collision bar to trigger the stop switch when the dehydration is unbalanced. However, this method has the following disadvantages: first, when the eccentricity is too large, due to the inertia, When the stop switch is triggered, it will also hit the barrel; secondly, the anti-collision bar is fixedly installed in one position, which may also cause the phenomenon of hitting the barrel but not triggering the stop switch, resulting in the failure to detect and avoid vibration; finally, due to the randomness of this kind of impact Strong, it may happen that the outer tub is eccentric but does not hit the safety switch, which will cause "misleading", so that the washing machine will continue to dehydrate, continue to hit the cabinet, and eventually cause the washing machine cabinet to shift or damage, reducing the The service life of the washing machine

[0004] Some existing washing machines use photoelectric sensors to measure the rotational speed and calculate the acceleration to achieve the purpose of controlling the balance of the machine, but they cannot be accurately measured and controlled. When some eccentricity is involved, it is easy to hit the bucket during the dehydration initial velocity stage, and multiple calculations are required to try the appropriate dehydration curve. dehydration

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