Belt dropping detection method for motor of drum washing machine or washing-drying integrated machine

Abstract

The invention discloses a belt dropping detection method for a motor of a drum washing machine or a washing-drying integrated machine. A CUP sends pulse to adjust the conduction angle of controllable silicon so as to drive the motor to rotate according to a set rotating speed, and the relationship between the motor and the belt is judged by detecting the size of the conduction angle of the controllable silicon in the rotating process of the motor so as to judge whether the motor and the belt are connected normally. A working program of the washing machine is provided with a critical value X of the conduction angle, and the critical value corresponds to the conduction angle of the corresponding controllable silicon when the belt is connected normally and an empty drum carried by the motor rotates; when the belt is connected normally and the drum carried by the motor is fed with clothes to rotate, and when the belt drops or is broken to cause separation between the motor and the drum and independently idle rotation of the motor, the conduction angles for controlling the normal rotation of the motor under the two conditions are different; and the relationship between the motor and the belt is judged by comparing the size of the detected conduction angle with the critical value X. The method has the characteristics of low cost and correct judgment.

Description

technical field [0001] The invention relates to a driving detection method of a washing machine, in particular to a detection method for a motor belt of a drum washing machine and an integrated washing and drying machine. Background technique [0002] After the belt falls off during the washing process of the drum washing machine, the clothes cannot be washed or dried because the bucket cannot rotate; while in the process of drying clothes in the drum washing and drying machine, when the belt falls off, because the bucket does not rotate, the clothes will be in the bucket. Not only can it not be dried, but the clothes will wrinkle due to the long time of stacking, and even cause safety hazards in the heating system in severe cases. [0003] When the belt of the drum washing and drying machine falls off, the usual solution is to use the sensor to detect the difference in the drying temperature in the drum to judge whether the belt is normal. When the drum is not rotating, the...

AI Technical Summary

Problems solved by technology

[0002] When the belt falls off during the washing process of the drum washing machine, the clothes cannot be washed or dried because the bucket cannot rotate; while in the process of drying clothes in the drum washing and drying machine, when the belt falls off, because the bucket does not rotate, the clothes will be in the bucket. Not only can it not be dried, but it will cause the clothes to wrinkle due to the long time of stacking, and even cause safety hazards in the heating system in severe cases.

[0003] When the belt of the drum washing and drying machine falls off, the usual solution is to use the sensor to detect the difference in the drying temperature in the drum to judge whether the belt is normal. When the drum is not rotating, the heating tube continues to heat, and the temperature in the drum rises rapidly. When the temperature reaches a certain set value, the heating will stop, which causes the clothes accumulated on the upper layer of the bucket to be easily dried by the hot air, while the clothes on the bottom will not only fail to dry, but will also be wrinkled, which is very difficult for the user. Inconvenience

At the same time, if the sensor fails, it will cause the machine to continue heating, which will not only damage the clothes, but also bring safety hazards

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