US 11,299,843 B2Granted

Washing machine

AssigneeSamsung Electronics Co., Ltd.

InventorsTomoyuki Kanagawa, Hiroyuki Miyake, Shin Kagami

Life of this patent

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Abstract

In any type of washing machine, an amount of laundry introduced into the washing machine may be measured in a short time with high accuracy. A washing machine includes a rotational spin tub into which laundry is introduced; a driving unit including a motor for rotating the spin tub; and at least one processor configured to control the driving unit to rotate the spin tub at first rotational speed, control the driving unit to rotate the spin tub at second rotational speed, and identify weight of the laundry based on acceleration at the time of changing of rotational speed of the spin tub from the first rotational speed to the second rotational speed and the second rotational speed.

Claims12

Dependent claims

A washing machine comprising:

a spin tub configured to be rotatable and into which laundry is introduced;
a driving system including a motor and configured to rotate the spin tub;
and
at least one processor configured to:
control the driving system to apply a first torque to rotate the spin tub at a first rotational speed,
after rotation speed of the spin tub is stabilized to the first rotational speed, control the driving system to apply a second torque greater than the first torque during an acceleration period to rotate the spin tub at a second rotational speed higher than the first rotational speed,
identify acceleration of the spin tub while rotational speed of the spin tub increases from the first rotational speed to the second rotational speed,
after rotation speed of the spin tub is stabilized to the second rotational speed, identify a value of the second rotational speed, and
identify a weight of the laundry based on the second rotational speed and the acceleration.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/591,563Filed 2 Oct 2019
Priority: JP JP2018-1873262 Oct 2018
Published: US 2020/0102686 A12 Apr 2020
Granted: 12 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

D06F 37/304
Driving arrangements: arrangements or adaptations of electric motors
D06F 23/04
Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing…:…
D06F 34/18
Arrangements for detecting or measuring specific parameters: condition of the laundry, e.g. nature or weight
D06F 2103/24
Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers: spin speed; Drum movements

Family

US 2020/0102686 A1Pre-grant publication · published 2 Apr 2020
US 11,299,843 B2This patent

From the US filing history. Foreign family members aren’t listed.

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