Improvements relating to laundry apparatus and/or their control
AssigneeFisher & Paykel Appliances Limited
InventorsChristopher Harold Matulis, Jamal Azhar Koya, Ethan Russell Bos
Life of this patent
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Abstract
A method of mitigating an out of balance washing load in a washing machine with a horizontal axis drum comprising: determining an indication of an angular position, and optionally a radial position, of a OOB mass of the washing machine drum, and controlling rotational speed of the drum so that, as the drum and OOB mass rotates, a rotational speed of the drum is varied relative to a usual speed based on the OOB mass so that an outward radial force on the washing load reduces below the inwards radial force and/or of gravity.
Claims29
A method of mitigating an out of balance laundry load in a laundry machine with a horizontal axis drum, comprising the steps of:
- spinning the drum above a satellisation speed of the laundry load;
- and
- within a single revolution of the drum, varying the drum speed by sequentially decreasing and then increasing the drum speed below and then above satellisation speed, to selectively allow at least some of the laundry load to drop under gravity.
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A method of mitigating an out of balance washing load in a washing machine with a horizontal axis drum comprising:
- determining an indication of an OOB mass of the washing machine drum, and
- controlling rotational speed of the drum so that, as the drum and OOB mass rotates, a rotational speed of the drum is varied, within one revolution of the drum, relative to a usual speed based on the OOB mass so that an outward radial force on the washing load reduces below the inwards radial force and/or of gravity.
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Dependencies are inferred from the claim text.