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Washing machine out of balance detection

A washing machine, horizontal technology, applied in the field of washing machines, can solve problems such as difficulties

Inactive Publication Date: 2013-03-06
NIDEC MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficulty remains in judging what the "standard" power level for a washing machine should be, and judging an unbalanced load when the washing machine is spinning the tub at a substantially constant RPM

Method used

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  • Washing machine out of balance detection
  • Washing machine out of balance detection
  • Washing machine out of balance detection

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Experimental program
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Embodiment Construction

[0020] For a general understanding of the context of the systems and methods disclosed herein, as well as details of the systems and methods, reference is made to the accompanying drawings. In the drawings, like reference numerals are used to refer to like elements throughout. As used herein, the terms "rate of rotation," "speed of rotation," and "speed of rotation" are used interchangeably and refer to the number of rotations completed by a rotating body during a given period of time, typically measured in revolutions per minute (RPM). unit representation.

[0021] As used herein, the term "tub" refers to a rotating body within a washing machine configured to contain items washed by the washing machine as well as fluids, such as water and detergent. The contents of the barrel are referred to herein as the "load". Various washing machines include a tub configured to rotate on a horizontal axis substantially parallel to ground plane, on a vertical axis substantially perpendic...

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PUM

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Abstract

A method of operating a washing machine to detect unbalanced loads has been developed. The method includes operating a motor to rotate a tub holding a load at a first rotational rate that is below a threshold rotational rate, identifying a mass of the load, operating the motor to rotate the tub at a second rotational rate that is above the threshold rotational rate, identifying a power applied to the motor to continue rotation of the tub at the second rotational rate, obtaining an out of balance mass value from a memory with reference to the power applied to the motor, second rotational rate, and identified mass, identifying a maximum rate for the tub with reference to the out of balance mass value, and operating the motor to rotate the tub at a rate that is less than or equal to the maximum rate.

Description

[0001] priority statement [0002] This application claims priority to US Provisional Application No. 61 / 358,280, filed June 24, 2010, entitled "Washing Machine Out of Balance Detection," which is hereby incorporated by reference in its entirety. technical field [0003] The present application relates generally to machines having a rotating container containing a load of material, and more particularly to washing machines having a rotating tub containing clothes or other materials. Background technique [0004] Many washing machine designs include a rotating tub that holds laundry or other items to be washed. The tub also holds the fluid used in the washing process, usually water and detergent. During the washing process, the tub rotates at various speeds depending on the operating mode of the washing machine. For example, during the agitation phase, the drum may rotate at a lower speed and frequently reverse the direction of rotation. During a spin cycle, the bucket typ...

Claims

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Application Information

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IPC IPC(8): D06F37/20D06F37/30
CPCG01M1/00D06F37/304D06F35/007D06F37/203D06F33/48D06F2103/04D06F2103/44D06F2105/48
Inventor G·彼得森T·希翰
Owner NIDEC MOTOR CORP