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Washing machine

A technology for washing machines and clothing, applied in other washing machines, washing machine appliances, control devices of washing machines, etc., can solve problems such as unbalanced changes, inability to infer vibration with high precision, and increased motor load.

Inactive Publication Date: 2012-11-21
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vibration cannot be estimated with high precision because the unbalance changes due to the increase in the rotational speed
In addition, at the resonance rotational speed in the rotational vibration mode, the vibration of the dynamic unbalance suddenly increases, and the load on the motor also increases.
Therefore, dynamic unbalance cannot be detected at low rotational speeds like the technique described in Patent Document 2

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0024] figure 1 It is a structural block diagram of the washing machine in Embodiment 1 of this invention. figure 2 It is a schematic structure drawing of this washing machine. image 3 It is a sequence diagram showing the rotational speed at startup in the dehydration process of the washing machine. Figure 4 It is an explanatory diagram of the vibration characteristics at the time of start-up in the dehydration process of the washing machine. Figure 5 It is a block diagram showing the control unit of the washing machine in detail.

[0025] exist figure 1 Among them, the washing machine mechanism unit 10 has a rotary drum 11 as a washing tub for accommodating and rotating laundry such as laundry. The motor 12 which rotates the rotary drum 11 while controlling the speed is comprised by the brushless motor. The washing machine mechanism unit 10 has a receiving tub 13 in which a rotary drum 11 is rotatably housed and water and clothes as laundry can be put therein. The w...

Embodiment approach 2

[0068] Figure 6 It is a structural block diagram of the washing machine control device according to Embodiment 2 of the present invention. exist Figure 6 Among them, the basic structure is the same as that of Embodiment 1, and the same reference numerals are assigned to the same components, and the contents of Embodiment 1 are referred to for the detailed description.

[0069] This embodiment differs from Embodiment 1 in that the control unit 20 has a rotational speed correcting unit 25 that controls the rotational speed of the motor 12 in the following manner based on signals from the unbalance vibration detection unit 31 or the unbalance vibration estimation unit 30 , that is, the rotation of the motor 12 is decelerated without stopping. In addition, a cloth unwinding instruction unit 26 is provided for instructing the cloth unwinding adjustment unit 24 to perform the cloth unwinding operation by using the rotational speed correction unit 25 to decelerate the rotation wi...

Embodiment approach 3

[0074] Figure 7 It is a structural block diagram of the washing machine control device according to Embodiment 3 of the present invention. exist Figure 7 Herein, the basic structure is the same as that of Embodiment 1, and the same reference numerals are attached to the same components, and the contents of Embodiment 1 are cited as the detailed description.

[0075] The difference between this embodiment and Embodiment 1 is that it has a dehydration rotation speed determination part 27, and this dehydration rotation speed determination part 27 controls the dehydration rotation speed according to the signal of the unbalance vibration detection part 31 or the unbalance vibration estimation part 30 (in this embodiment, it is speed below 400rpm).

[0076] Utilizing the signals of the unbalanced vibration detecting unit 31 and the unbalanced vibration estimating unit 30 using a 3D sensor, it is possible to detect unbalanced vibration and unbalanced amount not only in the consta...

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PUM

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Abstract

Disclosed is a washing machine comprising an vibration detector (31) for detecting the vibration of a laundry drum (13) due to an imbalance or the vibration of a washing machine housing (17) due to an imbalance, and a vibration estimator (30) for estimating the magnitude of the vibration due to an imbalance and the rotational phase of a motor (12) in response to the output of a controller (20) for controlling the motor (12). The controller (20) includes a fabric disentangling unit (24) for determining whether to implement a fabric disentanglement operation on the basis of the output of the vibration detector (31) and / or the output of the vibration estimator (30), thus making it possible to reduce an imbalance in the distribution of the fabric and reduce the vibration in the spin cycle dueto an imbalance.

Description

technical field [0001] The invention relates to a washing machine for washing laundry and the like. Background technique [0002] Generally, washing machines are broadly classified into a pulsator type in which laundry such as laundry is stirred with washing water to wash the laundry, and a drum type in which the laundry is dropped to wash (beating) the laundry. 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. [0003] In this drum-type washing machine, if the distribution state of the laundry in the rotary tub is skewed, large vibrations are likely to be generated during the spin-drying operation. In order to stop the operation when such large vibrations are generated, there is a washing machine that detects the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F33/02D06F33/48
CPCD06F37/203Y02B40/52D06F37/304D06F33/02Y02B40/00D06F2105/00D06F33/48D06F2103/26
Inventor 高祖洋蒲生健
Owner PANASONIC CORP
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