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Control equipment of brushless motor and washing machine with the same equipment

A motor control and motor technology, which is applied to the control device of the washing machine, the stop device, and other washing machines, etc., can solve the problems of high cost of the motor control device, consumption of regenerative power, large-scale motor control device, etc., and achieve miniaturization and The effect of lowering the price

Inactive Publication Date: 2007-02-28
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional scroll washing machine and front-loading washing machine, since the regenerative power is generated from the motor, an external resistor is required for consuming the regenerative power, resulting in a problem of increasing the size of the motor control device.
In addition, because the electrical circuit must be composed of electronic components with high withstand voltage, it also brings about the problem of high cost of the motor control device.

Method used

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  • Control equipment of brushless motor and washing machine with the same equipment
  • Control equipment of brushless motor and washing machine with the same equipment
  • Control equipment of brushless motor and washing machine with the same equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0067] The vortex type washing machine of the present embodiment is shown in Figure 1, in the inside of frame 1, through 4 suspension rods 21,21,21,21, hang down outer tube 2, in the inside of outer tube 2, can surround A washing tub 22 is accommodated rotatably on a vertical axis. A lid 11 that opens and closes when laundry is thrown into the washing tub 22 is attached to the upper portion of the rack 1 . In addition, a pulse generator 23 is rotatably provided at the bottom of the washing tub 22 to generate a swirling flow of washing water, and a plurality of mountain-shaped blades extending radially protrude from the surface of the pulse generator 23 . In addition, a plurality of through holes (not shown) are opened in the wall surface of the washing tub 22, so that water can be drained during the spin-drying operation.

[0068] Water supply nozzle 12 is installed on frame 1, and water supply valve 13 is housed in the way of water supply nozzle 12. By opening the water sup...

no. 2 example

[0096] In the drum type washing machine of this embodiment, as shown in FIG. 15 , an outer cylinder 60 supported by a vibration suppression mechanism composed of suspension springs 61 , 61 and buffers 62 , 62 is provided inside the frame 6 . Inside the outer tub 60 , a drum 63 for storing laundry is rotatably housed around a horizontal axis, and a cover 64 for putting laundry into the drum 63 is attached to the front of the outer tub 60 . A brushless motor 7 is installed below the urceolus 60 , and the output shaft of the brushless motor 7 is connected to the drive shaft 73 of the drum 63 through a power transmission mechanism composed of a driving pulley 71 , a belt 72 and a driven pulley 73 . Thereby, the drum 63 is rotationally driven. Furthermore, at the end of the drive shaft 74, an acceleration sensor 66 for detecting the acceleration of the drum 63 is mounted.

[0097] On the back surface of the drum 63 , a balance container 65 composed of an annular hollow body is fix...

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PUM

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Abstract

A device for controlling a brushless motor including an inverter for supplying a.c. electric power to the motor, and a drive control circuit for controlling the inverter. The control circuit includes a load weight detecting circuit for detecting the load weight acting on the motor, a circuit for preparing a driving signal, and a circuit for preparing a PWM signal based on the driving signal. The driving signal preparing circuit derives from the load weight detected a phase reference value to give a phase difference of up to 90 degrees between the braking voltage to be applied to the motor and the current of the motor, and prepares the based on the phase reference value.

Description

technical field [0001] The invention relates to a control device capable of controlling the braking of a brushless motor and a washing machine with the control device. Background technique [0002] Conventionally, as automatic washing machines, a scroll type washing machine in which a washing tub is rotatably accommodated in an outer tub about a vertical axis and a drum type washing machine in which a drum is accommodated in an outer tub rotatably about a vertical axis are known. [0003] In the scroll washing machine, a brushless motor is used as the motor for driving the pulse generator. During the dehydration operation, the motor is driven by rotation to make the washing tub and the pulse generator rotate at high speed at the same time. When the dehydration operation ends, regenerative braking The motor applies a large braking force to the motor to stop the rotation of the washing tub and the pulse generator. On the other hand, in drum-type washing machines, a brushless ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/18D06F33/02D06F37/30D06F37/40H02P6/06H02P6/08H02P6/17H02P6/24
CPCD06F2202/065D06F37/304H02P3/24H02P6/08Y02B40/52H02P6/24D06F2202/12H02P6/16D06F34/08D06F2103/00D06F2103/46D06F2105/48Y02B40/00H02P3/18
Inventor 富仁夫山本伸也小此木章
Owner HAIER GRP CORP
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