LAUNDRY TREATMENT MACHINE AND CONTROL METHOD THEREOF
First Claim
1. A laundry treatment machine comprising:
- a tub;
a drum rotatably disposed in the tub and having an inlet;
an actuator to provide power for rotating the drum; and
a balancer device disposed at an end of the drum where the inlet is provided, and the balancer device to adjust a center of gravity of the drum,wherein the balancer device includes;
a main balancer that reduces vibration of the drum by moving to a location opposite to eccentricity that is generated when the drum is rotated;
a first sub-balancer that moves relative to the main balancer and changes a first gap from the main balancer based on a degree of eccentricity of the drum; and
a second sub-balancer that moves relative to the main balancer and changes a second gap from the main balancer, wherein the second sub-balancer is moved away from the main balancer in a different direction than the first sub-balancer is moved away from the main balancer.
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Accused Products
Abstract
A laundry treatment machine may include: a tub; a drum that is rotatably disposed in the tub; an actuator that provides power for rotating the drum; and a balancer device that is disposed at an end where the inlet hole of the drum is formed, and adjusts the center of gravity of the drum that is rotating. The balancer device may include: a main balancer that reduces vibration of the drum by moving in the opposite direction to eccentricity that is generated when the drum is rotated; a first sub-balancer of which an arrangement gap from the main balancer is adjusted in accordance with the degree of eccentricity of the drum; and a second sub-balancer of which an arrangement gap from the main balancer is adjusted in the opposite direction of the first sub-balancer with respect to the main balancer.
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20 Claims
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1. A laundry treatment machine comprising:
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a tub; a drum rotatably disposed in the tub and having an inlet; an actuator to provide power for rotating the drum; and a balancer device disposed at an end of the drum where the inlet is provided, and the balancer device to adjust a center of gravity of the drum, wherein the balancer device includes; a main balancer that reduces vibration of the drum by moving to a location opposite to eccentricity that is generated when the drum is rotated; a first sub-balancer that moves relative to the main balancer and changes a first gap from the main balancer based on a degree of eccentricity of the drum; and a second sub-balancer that moves relative to the main balancer and changes a second gap from the main balancer, wherein the second sub-balancer is moved away from the main balancer in a different direction than the first sub-balancer is moved away from the main balancer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling a laundry treatment machine, the method comprising:
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rotating a drum at a predetermined rotation speed by using an actuator; measuring a current value that is applied to the actuator when the drum is rotated; performing primary balancing of the drum by moving a main balancer based on an eccentric portion that is generated by laundry in the drum; and performing secondary balancing of the drum by adjusting a position of a first sub-balancer spaced apart from the main balancer, and adjusting a position of a second sub-balancer spaced apart from the main balancer. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A laundry treatment machine comprising:
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a tub; a drum rotatably disposed in the tub; an actuator to provide power for rotating the drum; and a balancer device to reduce vibration of the drum, wherein the balancer device includes; a balancer guide having an annular space; a main balancer that moves in the annular space of the balancer guide; a first sub-balancer that moves in the annular space relative to the main balancer, and the first sub-balancer to change a first gap from the main balancer based on eccentricity of the drum; and a second sub-balancer that moves in the annular space relative to the main balancer, and the second sub-balancer to change a second gap from the main balancer. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification