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Washing machine driving device, washing machine having the same, and washing machine driving method

A technology for driving devices and washing machines, which is applied to the control devices of washing machines, washing devices, and other washing machines, etc., which can solve problems such as slow dynamic response, low torque characteristics, and a brushless DC motor drive method that has not yet been proposed, so as to improve the operating rate , The overall power consumption is minimized, and the effect of reducing the overall washing time

Active Publication Date: 2021-03-12
AMOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The induction motor has the characteristics of low noise, low vibration, etc. However, since the induction motor is an asynchronous motor with low torque characteristics and slow dynamic response at low speed, it is difficult to rotate clockwise and counterclockwise when it is in the washing process. Quickly switch the direction of rotation and form a strong washing water flow
[0014] On the contrary, the brushless DC (BLDC) motor is a dynamic motor with fast dynamic response, low rotor inertia, and simple speed control. However, conventionally, as a driving device for washing machines, there has been no proposal to highlight the characteristics of such a brushless DC motor. drive method

Method used

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  • Washing machine driving device, washing machine having the same, and washing machine driving method
  • Washing machine driving device, washing machine having the same, and washing machine driving method
  • Washing machine driving device, washing machine having the same, and washing machine driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0198] refer to Figure 9 The rotation speed timing diagram for forming the washing water flow in the opposite direction, in the method for forming the washing water flow in the opposite direction in Embodiment 1 of the present invention, basically, the pulsator 130 moves in one direction, for example, in the forward direction, that is, in the clockwise direction ( CW) rotary drive, within a preset time, after maintaining the motor ON time (ON TIME), there is a prescribed stop time (OFF TIME) for direction switching.

[0199] Figure 9 Graph P shows the rotational speed of the outer rotor 50 for driving the pulsator 130, and the graph S shows the rotational speed of the inner rotor 40 for driving the spin basket.

[0200] After that, the pulsator 130 is rotated in another direction, for example, in the reverse direction, that is, counterclockwise (CCW). In the preset time, after maintaining the motor ON time (ON TIME), there is a function for direction switching. The specifi...

Embodiment 2

[0213] refer to Figure 10 , the washing water flow forming method of the opposite direction of embodiment 2 and Figure 9 Example 1 shown is similar.

[0214] In Embodiment 1, the outer rotor 50 was overshoot-driven from 160 RPM to 200 RPM and then stopped before the initial drive of the motor ON TIME (ON TIME), but in the second embodiment, no overshoot drive was performed. In order to generate eddy current, drive the washing tub 120 in the opposite direction to the rotation direction of the pulsator 130 within 1 second during the initial drive of the motor ON time (ON TIME) and before the end, to increase the vortex one more time. The way the number of occurrences changes the drive method.

[0215] That is, in Embodiment 2, with the driving of the outer rotor 50, the pulsator 130 is rotated in the forward direction at 160 RPM, and at the same time, the inner rotor 40 is driven in the reverse direction for 1.2 seconds, so that the washing tank 120 is rotated in the reverse...

Embodiment 3

[0223] refer to Figure 11 , the formation method of the reverse direction washing water flow in Example 3 is generally similar to that in Example 1 and Example 2.

[0224] The difference between Example 1 and Example 2 and Example 3 is as follows: when the motor ON time (ON TIME) is initially driven and before the end, instead of the outer rotor 50, the overshoot is driven from 160 RPM to 200 RPM, and the rotational speed is increased to 200 RPM. 160RPM to drive the rotational speed and driving torque of the pulsator 130 .

[0225] In addition, in the middle part of the motor ON TIME (ON TIME), the speed adjustment section Pd in ​​which the rotation speed of the outer rotor 50 is lowered from 160 RPM to 120 RPM is increased by inserting, and a strong washing water flow such as a large wave can be generated.

[0226] In particular, in Example 3, the motor ON time (ON TIME) is shorter than that of Example 1 and Example 2, and the OFF time (OFF TIME) is longer. When the number...

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Abstract

The present invention relates to a washing machine driving device capable of minimizing energy consumption when forming a washing water flow in the opposite direction driven by a pulsator and a washing tank in opposite directions in order to form a powerful three-dimensional washing water flow with a high washing degree, and a washing machine having the same and Washing machine driving method. The driving device of the washing machine is characterized in that it comprises: a driving motor with double rotors and double stators, which has an inner rotor and an outer rotor that can be independently controlled by the double stators; an inner shaft that transmits the output of the outer rotor to the pulsator; for transmitting the output of the inner rotor to the washing tank; and a control unit for controlling the inner rotor and the outer rotor, the control unit controls in the following manner: when the washing stroke is performed, the rotation of the pulsator is switched in the clockwise direction and the counterclockwise direction There is a stop time in the direction, and the washing tub is driven in the direction opposite to the rotation direction of the pulsator by starting before the clockwise and counterclockwise driving time of the pulsator ends.

Description

technical field [0001] The present invention relates to a washing machine, and more particularly, to a washing machine driving device, a washing machine having the same, and a washing machine driving method. When washing the water flow, energy consumption can be minimized. Background technique [0002] In the washing machine with a spin-drying function proposed in Korean Laid-Open Patent Publication No. 10-1999-0076570 (Patent Document 1), the washing motor has the characteristics of a low-speed, high-torque motor. Compared with the washing motor, the spin-drying motor has the characteristics of a high-speed, low-torque motor. , the above-mentioned washing motor is an outer rotor type with a diameter larger than that of the dehydration motor, the dehydration motor is an inner rotor type, the washing motor is on the outer side, and the dehydration motor is on the inner side. [0003] In the washing machine of the above-mentioned Patent Document 1, the washing motor is of the...

Claims

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Application Information

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IPC IPC(8): D06F37/40D06F37/30D06F33/36D06F33/46D06F33/44D06F33/58D06F34/08D06F37/12D06F37/24D06F105/46
CPCD06F37/40D06F37/12D06F37/30Y02B40/00D06F37/304D06F33/46D06F33/44D06F37/24H02K16/00D06F2105/46D06F2103/24D06F2103/38
Inventor 金炳秀
Owner AMOTECH
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