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Self-weighing method for drum-type washing machine

A drum washing machine and automatic weighing technology, which is applied to the control device of the washing machine, other washing machines, weighing, etc., can solve the problems of insufficient automatic weighing and large errors, and achieve accurate automatic weighing, high precision, and shortened The effect of detection time

Active Publication Date: 2009-09-09
QINGDAO HAIER WASHING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the application of the above methods, when the load is small or the friction is large, the error may be large, which cannot meet the requirements of automatic weighing

Method used

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0032] Such as figure 1 As shown, the washing machine includes a body 1, a machine door 2, a water tank 3, a clothes tank 4, a control panel, and a drive and control system. The body 1 is in the shape of a rectangular box as a whole, the door 2 is set in the middle of the front, the water tank 3 is fixed in the body 1 through a suspension mechanism, and is cylindrical in shape that opens toward the door 2, and the clothes tube 4 is installed in the water tank 2, open the machine door 2 to put the clothes to be washed into the clothes tub 4 or take them out, the control panel is arranged on the surface of the body 1 for the user to choose the washing program, the drive system can drive the motor 5 to rotate , the clothes tube 4 is connected with the rotating shaft of the motor 5 through the bearing, so the rotation of the drive motor 5 can direc...

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Abstract

The invention relates to a self-weighing method for a drum-type washing machine. Firstly, controlling a motor to reach a first preset speed and to rotate at the first preset speed constantly, and measuring the torque of the motor rotating constantly at the first preset speed; secondly, controlling the motor to accelerate from the first preset speed to a second preset speed, and measuring the accelerating torque of the motor accelerating from the first preset speed to the second preset speed; thirdly, controlling the motor to rotate constantly at the second preset speed, and measuring the torque of the motor rotating constantly at the second preset speed; and finally, working out a corresponding load torque by subtracting an average value of the torque of the motor rotating constantly at the first preset speed and the torque of the motor rotating constantly at the second preset speed from the accelerating torque of the motor accelerating from the first preset speed to the second preset speed according to the test results, and after a correction step, comparing the obtained load torque with a curve, pre-stored in a computer controller of the washing machine, of the corresponding relation of a load torque and a load weight to obtain a most similar weight data. The method has the advantages of high test accuracy and short test time.

Description

technical field [0001] The invention relates to a method for automatic weighing of a drum washing machine, in particular to a method for testing the difference between the torque required for the motor to accelerate to a certain speed under different load conditions and the torque when it runs at a certain speed at a constant speed, thereby The invention discloses an automatic weighing method for a drum washing machine which accurately detects the weight of laundry to be washed in the washing machine. Background technique [0002] The washing machine includes a body, a machine door, a water tub, a clothes tub, a drive and a control system. The door is located on the front or top surface of the body for opening and closing. Cylindrical, the clothes tube is installed in the water tank, the drive system drives the motor to rotate, and the control system controls the entire washing process of the washing machine. [0003] The current users all hope that the washing machine can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/00G01L5/00D06F39/00D06F33/00
Inventor 吕佩师许升张惠玉皮晓杰
Owner QINGDAO HAIER WASHING MASCH CO LTD
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