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Washing machine

a washing machine and a technology for washing machines, applied in the field of washing machines, can solve the problems of increasing the overall driving noise, causing the noise of the body, and causing the noise of the air flow, and achieve the effect of avoiding or reducing the noise generation

Inactive Publication Date: 2008-07-31
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a washing machine that can reduce or avoid noise during inner tub rotation without significantly changing the machine's configuration. This is achieved by planarizing the inner surface of the outer tub and / or the outer surface of the inner tub, which reduces the contact area between the two surfaces and reduces friction during rotation. The planarization units can be positioned at the rear end portion of the outer tub and inner tub, respectively.

Problems solved by technology

As a result, upon the rotation of the inner tub 50, noise due to air flow (i.e., air-bone noise) are generated drastically, which increases the overall driving noise.

Method used

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second embodiment

[0050]Hereinafter, a washing machine in accordance with the present invention will be described with reference to FIGS. 8 to 11. For the sake of explanation, the same reference numerals will be given for the same configuration and components as the aforementioned ones, and detailed description thereof will not be repeated.

[0051]As shown in FIG. 8, the washing machine may comprise a cabinet 110, an outer tub 120 horizontally installed in the cabinet 110, an inner tub 190 rotatably installed in the outer tub 120, and an inner tub planarized unit 220 formed by planarizing an outer surface of the inner tub 160 such that concave-convex portions in an axial direction can be reduced, so as to restrain air noise from being generated during the rotation of the inner tub 160.

[0052]As shown in FIG. 9, the inner tub 190 may include a cylindrical portion 192 having a certain diameter, and a rear end portion 202 perpendicularly disposed at the rear end of the cylindrical portion 192.

[0053]The rea...

third embodiment

[0058]Hereinafter, a washing machine in accordance with the present invention will be described with reference to FIGS. 12 and 13. As shown in FIGS. 12 and 13, the washing machine may comprise a cabinet 110, an outer tub 120 horizontally installed in the cabinet 110, an inner tub 230 rotatably installed in the outer tub 120, and an inner tub planarized unit 250 formed by planarizing an outer surface of the inner tub 230 such that concave-convex portions in an axial direction can be reduced, to restrain air noise generated during the rotation of the inner tub 230.

[0059]The inner tub 230 may include a cylindrical portion 233, and the rear end portion 235 perpendicularly disposed at the rear end of the cylindrical portion 233. A frame 241 having a rotation shaft 243 is coupled to a rear end portion 235 of the inner tub 230. The rear end portion 235 of the inner tub 230 may include an end surface 236 perpendicularly disposed with respect to the cylindrical portion 233, an insertion port...

fourth embodiment

[0063]Hereinafter, a washing machine in accordance with the present invention will be described with reference to FIGS. 14 to 16. As shown in FIG. 14, the washing machine may comprise a cabinet 110, an outer tub 320 horizontally installed in the cabinet 110, an inner tub 160 rotatably installed in the outer tub 320, a planarized unit 330 formed by planarizing either an inner surface of the outer tub 320 or an outer surface of the inner tub 160, which face each other, such that concave-convex portions in an axial direction can be reduced, so as to prevent or reduce noise due to air flow during the rotation of the inner tub 160.

[0064]The outer tub 320 is installed in the cabinet 110, and the inner tub 160 is rotatably installed in the outer tub 320. A driving motor 128 for rotating the inner tub 160 is coupled to a rear end portion of the outer tub 320.

[0065]The planarized unit 330 may include an outer tub planarized unit 331 formed at an inner surface of the rear end portion of the o...

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Abstract

A washing machine includes a cabinet; an outer tub horizontally installed in the cabinet; an inner tub rotatably installed in the outer tub; and a planarized unit configured to planarize at least one of an inner surface of the outer tub and an outer surface of the inner tub, the inner surface of the outer tub and the outer surface of the inner tub facing with each other.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This nonprovisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 10-2007-0009653 filed in Korea on Jan. 30, 2007, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a washing machine, and more particularly, to a washing machine capable of avoiding or reducing noise generation during a rotation of an inner tub.[0004]2. Background of the Invention[0005]In general, a washing machine, as shown in FIG. 1, includes a cabinet 10, an outer tub 20 received in the cabinet 10, and an inner tub 50 rotatably installed in the outer tub 20.[0006]An opening 12 and a door 14 are disposed at the front surface of the cabinet 10 such that clothes to be washed or washed can be drawn in or out. The outer tub 20 is supported by a spring 22 and a damper 23 in the cabinet 10.[0007]The outer tub 20 has a cylindrical shape...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06F37/04
CPCD06F37/269D06F37/264E06B3/20E06B3/96E06B3/72E05Y2800/682
Inventor LEE, SANG-HOONKIM, JAE-HYUN
Owner LG ELECTRONICS INC