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Motor for washing machine

By using the isolation device of the brushless motor in the drum-type washing machine to isolate the gap between the stator and the rotor, the noise problem caused by air friction is solved, the explosion sound and resonance sound are significantly reduced, and the silent effect of the equipment is improved.

Inactive Publication Date: 2003-12-03
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the conventional direct-coupled drum type washing machine has a problem that noise is generated by air friction between the rotor 40 and the stator 30

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0055] refer to Figure 5-9 , the first preferred embodiment of the present invention will be described in detail. Figure 5 Shown is a partial sectional view of a motor according to a first embodiment of the present invention; Image 6 shown along Figure 5 The cross-sectional view made by the I-I line in ; Figure 7 Shown is a perspective view of a spacer plate and a stator installed in the motor of the first embodiment of the present invention; Figure 8 Shown is a perspective view of a spacer plate and a stator installed in a motor of another embodiment of the present invention.

[0056] As shown in the figure, the motor 20 for a washing machine according to the first embodiment of the present invention generally includes a stator 30 fixed on the rear surface of the bucket 3 and a rotor 40 disposed outside the stator with a predetermined gap 21. The motor 20 of the present invention also includes a spacer member to separate the gap 21 between the stator 30 and the roto...

no. 2 example

[0073] The following will refer to Figure 10A-15 Instead, the second embodiment of the present invention will be described in detail. Figure 10A Shown is a perspective view of a plug member of a motor according to a second embodiment of the present invention; Figure 10B shown as Figure 10A rear perspective view of Figure 11A shown as Figure 10B plan view of Figure 11B shown along Figure 11A The sectional view taken along the line II-II in; Figure 12 Shown is a plan view showing an assembled state of a plug member and a stator according to a second embodiment of the present invention.

[0074] The motor 20 used in the washing machine according to the second embodiment of the present invention generally includes: a stator 30 fixed on the rear surface of the bucket 3, a rotor 40 arranged outside the stator 30 with a predetermined gap 21, and a spacer. The isolation member is used to isolate the gap 21 between the stator 30 and the rotor 40 . Since the structures ...

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PUM

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Abstract

A motor for a drum type washing machine is disclosed, wherein noise is reduced. To this end, the drum type washing machine is provided with a washing motor (20) comprising a stator (30) fitted at a rear surface of a tub (3) and having a plurality of slots (33) on which a coil (33a) is wound; a rotor (40) provided at an outer side of the stator (30) with a permanent magnet (41) and connected to a washing drum (9) inside the tub (3) by a driving shaft (17); and isolating means (50, 60, 70, 80) for isolating a gap (21) between the stator (30) and the rotor (40) not to be communicated with the stator (30) and the rotor (40).

Description

technical field [0001] The present invention relates to a drum type washing machine, and more particularly, the present invention relates to a brushless DC motor for driving a drum type washing machine. Background technique [0002] In general, the drum type laundry method performs washing using friction between clothes and a drum that is rotated by a driving force of a motor in a state in which detergent, washing water, and clothes are contained in the drum. The above-mentioned drum type laundry method has advantages such as not damaging clothes, preventing tangling of clothes, and having the effect of beating and wiping clothes. [0003] The following will refer to Figure 1-4 An example of such a direct-coupled drum washing machine is briefly described. [0004] figure 1 Shown is a structural sectional view of a common drum-type washing machine, figure 2 shown as figure 1 A magnified view of the portion of circle 'A' in . [0005] Such as figure 1 with figure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F23/02D06F37/36H02K3/487H02K5/128H02K7/14H02K21/22
CPCH02K2205/12H02K5/128H02K7/14H02K21/22
Owner LG ELECTRONICS INC
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