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Washing machine

A washing machine and motor technology, applied in the field of washing machines, can solve the problems such as the inability to stably reduce the vibration of the washing machine, the large washing tank, and the reduction of the vibration of the washing tank.

Inactive Publication Date: 2011-08-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the drum of the drum type washing machine is inclined, the laundry tends to be out of balance during dehydration, and there is a problem that the washing tank vibrates greatly.
[0008] In addition, in the drum-type washing machine disclosed in Patent Document 2, the vibration of the washing tub is detected, and the rotational speed is only controlled according to the degree of vibration, and the vibration of the washing tub is not actively reduced by motor control.
In this way, the vibration reduction of the washing tub of the drum-type washing machine in Patent Document 2 is performed only by the shock absorber arranged on the lower side of the storage tub, and there is a problem that the vibration of the washing machine cannot be stably reduced.

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0021] figure 1 It is a block diagram of the vibration control device for the washing machine according to the first embodiment of the present invention. exist figure 1 Among them, the washing machine includes a washing machine mechanism 10 , a rotary drum 11 and a motor 12 . Here, rotary drum 11 is a washing tub that accommodates and rotates laundry. The motor 12 is a brushless motor, and the motor 12 drives the rotary drum 11 to rotate while controlling the speed of the rotary drum 11 .

[0022] figure 1 The washing machine in the washing machine also includes a storage cylinder 13, a seal 14, a support spring 15, a shock absorbing mechanism 16, a casing 17, a laundry input port 18, an anti-vibration rubber 19 and a 3-axis acceleration sensor 20. Here, storage tub 13 accommodates a washing tub and is supported in case 17 . The support spring 15 supports the posture of the washing tub. The casing 17 has a laundry input port 18 . The seal 14 connects the storage tube 13...

Embodiment approach 2

[0033] figure 2 It is a block diagram of a vibration control device for a washing machine according to Embodiment 2 of the present invention. The basic structure of the vibration control device is the same as that of the first embodiment of the present invention, and thus its description will be omitted. In addition, the same constituent elements as those of the first embodiment of the present invention are marked with and figure 1 The same reference numerals.

[0034] and figure 1 The difference is that the unbalance vibration control unit 23 has a torque fluctuation correcting unit 28 . The unbalance vibration control unit 23 for detecting torque fluctuations of the motor 12 estimates torque fluctuations based on the output of the unbalance detection unit 22 and the output of the inverter circuit drive unit 26 and corrects the torque fluctuations. Therefore, in order to make the torque fluctuation of the electric motor 12 zero, the torque fluctuation correcting unit 28 ...

Embodiment approach 3

[0038] image 3 It is a block diagram of a vibration control device for a washing machine according to Embodiment 3 of the present invention. The basic structure of the vibration control device is the same as that of the first embodiment of the present invention, and thus its description will be omitted. In addition, the same constituent elements as those of the first embodiment of the present invention are marked with and figure 1 The same reference numerals.

[0039] and figure 1 The difference is that the unbalance detection unit 22 has a vibration locus detection unit 30 and the unbalance vibration control unit 23 has a signal phase adjustment unit 29 . Here, the vibration trajectory detection unit 30 is used to detect the vibration trajectory of the storage tube 13 . In this way, the motor 12 is controlled by the unbalanced vibration control unit 23 so as to reduce the vibration of the storage tube 13, so that the vibration of the storage tube 13 and the accompanying ...

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PUM

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Abstract

A washing machine includes a housing, a washtub for accommodating and rotating the laundry, a motor for driving the washtub, a motor controller for controlling the motor, a tubular container for accommodating the washtub and supported relative to the housing, a support device for supporting the tubular container to be in a predetermined position, an imbalance sensor for sensing imbalance caused by the laundry lying in an imbalanced manner in the washtub, and an imbalance vibration controller for adding a signal, which corrects torque fluctuation of the motor caused by the imbalance, to a motor control signal.

Description

technical field [0001] The present invention relates to a washing machine having a motor for generating a rotational driving force for rotating a washing tub for washing, rinsing, spin-drying and drying. Background technique [0002] In general, washing machines are broadly classified into a pulsator type in which laundry is washed by returning water, and a drum type in which laundry is washed (beating) by falling of the laundry. [0003] The pulsator type takes out or puts in the laundry from the upper side, and the direction of the washing tank is vertical, so it is called a vertical type. In contrast, the drum-type washing tank is oriented horizontally and is called a horizontal type. In addition, usually the dryer is also a horizontal type. [0004] On the other hand, in recent drum-type washing machines, the washing tub serving as the drum is arranged obliquely from the viewpoint of general design. As a result, the drum type washing machine is made easy to take out t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F33/02D06F49/04D06F33/48D06F34/08D06F34/16
CPCD06F37/203D06F34/08D06F34/16D06F33/48D06F2103/26
Inventor 高祖洋蒲生健
Owner PANASONIC CORP