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Adaptive water level adjustment for an automatic washer

Патентный поиск по классам МПК-8:

Класс D06F35/00 Стиральные машины, устройства и способы стирки, не предусмотренные в других группах

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Классы МПК:D06F35/00 Стиральные машины, устройства и способы стирки, не предусмотренные в других группах
Автор(ы): Ashrafzadeh, Farhad (Stevensville, MI, US)
Vadakkeveedu, Kalyanakrishnan (College Station, TX, US)
Vaidhyanathan, Raveendran (Saint Joseph, MI, US)
Патентообладатель(и): Whirlpool Corporation (Benton Harbor, MI, US)
Приоритеты:
подача заявки
25.04.2011
публикация патента
10.07.2012

РЕФЕРАТ (Abstract)

An apparatus and method for determining the degree of engagement between a clothes mover and fabric items during a wash process, and a method for setting the liquid level in the automatic washer based on the degree of engagement between a clothes mover and the fabric items.
Полный текст Патента US 8214954 + PDF


ФОРМУЛА ИЗОБРЕТЕНИЯ (CLAIMS)

What is claimed is:

1. A method for setting the liquid level in an automatic clothes washer comprising a wash tub defining a wash chamber for receiving fabric items and a clothes mover located within the wash chamber and driven by a motor to impart mechanical energy to the fabric items upon contact, the method comprising: A) introducing liquid into the wash chamber; B) moving the clothes mover relative to the wash chamber with the motor and outputting a waveform having ripples for one of the motor current and motor speed; C) repeatedly determining a running average of the amplitude of the ripples for the waveform to define multiple running averages; D) determining from the multiple running averages a degree of engagement between the clothes mover and the fabric items based on the multiple running averages; and E) repeating steps A-D until the degree of engagement is less than a predetermined threshold to thereby set the liquid level.

2. The method according to claim 1, wherein the degree of engagement is determined by comparing the multiple running averages to a reference value.

3. The method according to claim 2, wherein the comparison comprises determining a difference between the multiple running averages and the reference value.

4. The method according to claim 3, wherein the determining the difference between the multiple running averages and the reference value is conducted over at least one stroke of the clothes mover.

5. The method according to claim 4, wherein the difference between the multiple running averages and the reference value is averaged over a predetermined time and the average is compared to a threshold value.

6. The method according to claim 5, wherein the liquid level is set when the running average is equal to the threshold value.

7. The method according to claim 1, wherein the introduction of liquid comprises at least one of multiple discrete introductions of liquid or a continuous introduction of liquid.

8. The method according to claim 1, wherein the introduction of liquid comprises introducing liquid into at least one of the wash tub and wash basket.

9. The method according to claim 8, wherein the introduction of liquid comprises introducing liquid into an open face of the wash basket.

10. The method according to claim 1, wherein the moving of the clothes mover comprises moving the clothes mover through a predetermined stroke.

11. The method according to claim 10, wherein the moving of the clothes mover through a predetermined stroke comprises reciprocally moving the clothes mover.

12. The method according to claim 11, wherein the moving of the clothes mover comprises rotating the clothes mover.


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