摘要:
A damper for damping vibration and a washing machine having the same are disclosed. The damper includes a damper cylinder; a shaft inserted into the damper cylinder through one end of the damper cylinder, and reciprocating in the lengthwise direction of the damper cylinder; and a friction member provided on the shaft for damping vibration generated by friction with the inner wall of the damper cylinder, and moving vertically to the lengthwise direction of the damper cylinder. The damper adjusts damping force thereof according to vibrated states of an object to be vibrated, and has an improved vibration-damping effect.
摘要:
A clothes amount sensing method in a washing machine which is capable of reducing clothes amount sensing errors caused by frictional forces, thereby achieving an enhancement in accuracy and reliability. The method includes an acceleration step for accelerating, to a predetermined RPM, a motor adapted to rotate the wash tub, a constant-speed step for maintaining the motor at the predetermined RPM when an RPM of the motor reaches the predetermined RPM in accordance with the acceleration step, a deceleration step for turning off the motor to decelerate the motor, following the constant-speed step, and a clothes amount determination step for determining the amount of the clothes by use of equations of motion respectively established in the acceleration, constant-speed, and deceleration steps.
摘要:
Disclosed herein is a suspension apparatus and a resonance avoiding method of a drum-type washing machine. The method adjusts elastic moduli of elastic members before a drum reaches a resonance speed during a dehydration cycle of the washing machine. If the rotating speed of the drum exceeds the resonance speed, the method returns the elastic moduli of the elastic members to an initial state, thereby preventing generation of resonance.
摘要:
Disclosed herein is a damper for use in a drum type washing machine, which can support a tub of the washing machine and absorb vibration of the tub. The damper comprises a cylinder, a piston partially inserted inside the cylinder, and a fixed damping member and movement prevention means, which are installed around an inserted portion of the piston inside the cylinder so that they are spaced apart from each other, and adapted to allow the piston to be stably supported inside the cylinder even in case that a tub of the washing machine vibrates in a non-axial direction of the cylinder and piston, thereby restricting a relative angular rotation of the cylinder and piston and preventing rubbing and collision caused between a lower end of the cylinder and the piston.
摘要:
The present invention provides a washer, damper thereof, and control method thereof, by which noise is reduced by adjusting a damping force of the damper in a manner of turning on/off power of the damper according to an oscillation frequency of a vibrating body such as a washer. The control method reduces noise by supplying power to a damper in an excessive vibration state of a vibrating body such as a washer or by cutting off the power supplied to the damper in a normal vibration state of the vibrating body.
摘要:
A washing water circulating device in a washing machine includes a first tube connected to the tub, a water circulating pump connected to the first tube that pumps water from the tub, a second tube connected to the water circulating pump that supplies the pumped water to the tub, a bypass tube provided between the first tube and the second tube, and a control valve provided to the second tube, that guides the pumped water to one of the second tube and the bypass tube.
摘要:
Disclosed is a method for precisely sensing an amount of laundry of a washing machine without influence of static friction. The method includes the steps of (a) operating a motor, and then carrying out regenerative braking of the motor, (b) re-operating the motor after the step (a), and then carrying out rheostatic braking of the motor, and (c) determining the amount of laundry by means of the principle of the conservation of energy in the regenerative braking of the motor in the step (a) and the principle of the conservation of energy in the rheostatic braking of the motor in the step (b).
摘要:
A drive unit for dish washing machines includes solid waste chambers with bottom surfaces that are stepped. One of the solid waste chambers has an inlet/outlet port. The solid waste chambers are inclined downward toward the inlet/outlet port. Consequently, filtering capacity is increased, and discharge of solid waste is facilitated.
摘要:
Disclosed herein is a balancer of a washing machine. The balancer comprises a balancer ring mounted to a drum, the balancer ring having a liquid receiving space for receiving liquid, a plurality of first baffles disposed in the interior of the balancer ring, and a plurality of second baffles disposed between the first baffles such that the first and second baffles are alternately arranged, the second baffles having a height lower than that of the first baffles. When abnormal vibration is generated in the washing machine, the surge of salt water is effectively prevented by the second baffles. Consequently, further noise and vibration due to a resonance phenomenon or other abnormal vibration is minimized.
摘要:
Disclosed herein is a drum type washing machine. The drum type washing machine comprises front and rear balancers mounted at the front and rear sides of a drum, respectively. Consequently, an eccentric force generated by laundry is complementarily eliminated by the front and rear balancers even when the laundry is eccentrically placed at one side of the drum.