KR20100014052A - Method for washing and washing machine - Google Patents

Abstract

PURPOSE: A washing method and a washing machine thereof are provided to minimize damage to the laundry and to improve cleaning performance. CONSTITUTION: A positive torque is applied in a drum(S210). The laundry within the drum is rotated and lifted(S220). The laundry drops within the drum while braking(S230). The positive torque is applied in the drum and the dropped laundry is rotated(S240). When the laundry drops, the maximum height of laundry is over the half of the drum height.

Description

Laundry method and washing machine {Method for washing and Washing machine}

The present invention relates to a washing method and a washing machine, and more particularly, to a washing method and a washing machine with improved washing performance.

In general, a washing machine is a device that cleans through a process such as washing, rinsing, and dehydrating to remove contamination on clothes, bedding, etc. (hereinafter, referred to as 'po') by using water, detergent, and mechanical action.

Washing machines are classified into agitator type, pulsator type and drum type washing machines.

The stirring type washes by rotating the laundry rod rising to the left and right in the center of the washing tank, and the vortex type washes by rotating the disk-shaped rotary blade formed at the lower part of the washing tank to the left and right by using friction force between the water flow and the cloth, and the drum type inside the drum. Add water, detergent and cloth to wash the drum by rotating it.

The drum washing machine is equipped with a tub in which washing water is accommodated inside a cabinet forming an exterior, a drum in which a cloth is accommodated is disposed inside the tub, and a motor for rotating the drum is mounted on the rear side of the tub, and the tub is mounted on the motor. Drive shaft connected to the back side of the drum is penetrated through. The inside of the drum is equipped with a lifter to raise the gun when the drum rotates.

The drum washing machine is lifted up by a lifter mounted inside the drum when the drum is rotated, and the washing is performed by falling and tumbling after being attached and rotated in the drum. In addition to the tumbling motion, various washing methods are required to improve washing performance.

The problem to be solved by the present invention is to provide a washing method with improved washing performance.

Another object of the present invention is to provide a washing method that can maximize the amount of impact when the fabric falls.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, in the washing method according to an embodiment of the present invention, when the drum of the drum washing machine one rotation in the forward direction, by applying a forward torque to the drum (a) step of rotating in the drum to rotate And (b) dropping the cloth while braking the drum, and (c) applying the forward torque to the drum to rotate and drop the dropped cloth.

In order to achieve the above object, the washing method according to an embodiment of the present invention, in the drum 1 rotation of the drum washing machine in the forward direction, by applying a forward torque to the drum (p) and the drum, Braking a drum to decelerate the drum (q), and applying a forward torque to the drum to rotate the drum (r).

In order to achieve the above object, the washing method according to an embodiment of the present invention, the (x) the drum is rotated forward so that the maximum height of the cloth rises more than half of the drum height, and the drum so that the carriage falls Decelerating (y) and rotating the drum forward so that the maximum height of the dropped artillery rises above half the drum height.

In order to achieve the above object, a washing machine according to an embodiment of the present invention, a drum is inserted and rotated, a drive unit for rotating by applying a torque to the drum, the drive unit applies a forward torque to the drum and the drum After the brake is applied, the driving unit continuously applies forward torque to the drum such that the first motion of applying the forward torque to the drum to rotate the drum one direction in the forward direction and the carriage in the drum rises and falls to rotate the drum one rotation. And a controller for implementing the second motion.

In order to achieve the above object, a washing machine according to an embodiment of the present invention, a drum is inserted and rotated, a drive unit for rotating by applying a torque to the drum, the drive unit applies a forward torque to the drum and the drum And a third motion of applying a forward torque to the drum to rotate the drum one direction in the forward direction and a third motion of the driving unit to reciprocate the drum in the forward and reverse directions so that the gun in the drum rises and falls. It includes a control unit to implement.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the washing method and the washing machine of the present invention has one or more of the following effects.

First, there is an advantage that the washing performance is improved by increasing the amount of impact when falling.

Second, there is an advantage to improve the washing performance while minimizing damage to the blanket.

Third, there is also an advantage that can perform a variety of motion depending on the fabric in the washing or rinsing stroke.

Fourth, there is an advantage to minimize the wear, noise and heat generation of parts by performing an effective braking method.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for explaining a washing method and a washing machine according to embodiments of the present invention.

1 is a perspective view showing a washing machine according to an embodiment of the present invention.

The washing machine according to an embodiment of the present invention includes a cabinet 110 forming an exterior, a tub 120 disposed inside the cabinet and supported by the cabinet, and a drum 130 inserted into the tub and rotating with a cloth inserted therein. ), A driving unit 140 for applying torque to the drum to rotate, and a control unit 115 for controlling the driving unit.

The cabinet 110 includes a cabinet body 111, a cabinet cover 112 disposed on the front surface of the cabinet body and coupled thereto, and a top plate 116 coupled to the cabinet body. The cabinet cover 112 includes a cloth entry hole 114 formed to allow entry and exit of the gun, and a door 113 disposed to be rotatable from side to side to enable opening and closing of the gun entry hole.

Tub 120 is buffered by a spring (not shown) and a damper (not shown) inside the cabinet 110. Tub 120 receives the wash water at the time of washing. The drum 130 is disposed inside the tub 120.

The drum 130 is rotated by inserting a cloth. The drum 130 is formed with a plurality of holes so that the wash water passes, the lifter 135 for lifting the bag to a certain height when the drum is rotated may be disposed. The drum is rotated by the driving unit 140.

The driver 140 rotates the drum by applying torque to the drum 130. The driving unit 140 may apply a forward torque or a reverse torque to the drum 130. The driving unit 140 includes a motor and a rotating shaft.

Various motions implemented by the controller 115 will be described later with reference to FIG. 5.

2 is a view showing a washing method according to an embodiment of the present invention.

When the driving unit 140 applies the forward torque to the drum 130, the drum rotates in the forward direction and the carriage rotates and rises (S210). When the driving unit 140 applies a forward torque to the drum while the carriage drum 130 is at the bottom, the drum rotates in the forward direction. When the drum 130 rotates in the forward direction, the fabric is lifted by the lifter 135 to rotate in the forward direction. At this time, the drum 130 is preferably rotated to about 60 rpm, the speed of 1G or more so that the carriage can be attached to the drum rotates.

When the maximum height of the gun rises beyond half of the height of the drum 130, the driving unit 140 brakes the drum to decelerate the drum (S220). When the drum 130 rotates in the forward direction and the carriage exceeds about 165 degrees, the driving unit 140 brakes the drum. The driving unit 140 brakes the drum by reverse phase braking and / or power generation braking. Detailed description of reversed phase braking and power generation braking will be described later with reference to FIGS. 3 and 4.

The driving unit 140 brakes the drum 130 so that the carriage falls while the drum is decelerating (S230). It is preferable that the fabric falls near 180 degrees to maximize the impact amount. It is preferable that the drum 130 decelerates and maintains a pause state while the cloth is dropped. At least a portion of the fabric may fall past the centerline of the drum 130.

After the fabric is dropped, the driving unit 140 applies a forward torque to the drum 130, and the drum rotates in the forward direction, and the dropped fabric is rotated to rise again (S240). When the fabric falls, the driving unit 140 applies a forward torque to the drum 130 again. When the drum 130 rotates in the forward direction, the fabric is lifted by the lifter 135 to rotate in the forward direction. At this time, the drum 130 is preferably rotated to about 60 rpm, the speed of 1G or more so that the carriage can be attached to the drum rotates.

In the above-described step S210, step S240 is performed while the drum 130 is rotated one direction in the forward direction. After the step S240, the step S220 may be executed and repeated, or the forward torque may be continuously applied.

3 is a view for explaining reverse phase braking in the laundry method according to an embodiment of the present invention.

Reversed braking is to stop and drive the motor to generate torque in the opposite direction to which the motor is rotating.

The power supply unit 340 supplies the rectified and smoothed power to the input AC power AC 220V by a bridge diode (not shown) and a smoothing capacitor (not shown). The DC voltage unit 350 stores the DC voltage by charging the voltage received from the power supply unit 340 to the capacitor, and the charged DC voltage drives the motor 381.

When performing reversed braking, the DC voltage unit 350 applies a voltage having a magnitude corresponding to the speed of the motor 381 to the braking unit 360. The braking unit 60 applies a reverse voltage in which the voltage output from the DC voltage unit 50 is changed from the phase and 180 degrees of the voltage for moving the current motor 381 to the motor.

4 is a view for explaining the power generation braking in the laundry method according to an embodiment of the present invention.

Power generation braking is to stop the motor by consuming the electromotive force generated by forming a closed circuit in the motor from the resistance.

Referring to FIG. 4, the braking unit 460 includes two switching elements T1 and T2 (transistor, IGBT, etc.) connected in series, and three stages are connected in parallel (T1, T2 ||). T3, T4 || T5, T6).

When performing power generation braking, when the lower switching elements T2, T4 and T6 of the switching elements 465 constituting the brake unit 460 are turned on and the upper switching elements T1, T3 and T5 are cut off, the DC voltage The unit 450 and the motor 481 are disconnected, and the winding 485, the resistor 487, and the lower switching elements T2, T4, and T6 form a closed circuit. The motor 481 that rotates by the applied voltage acts as a generator to generate counter electromotive force in the winding 485. The generated counter electromotive force is consumed by the resistor 487 in the motor 481 to brake the motor 481. However, the counter electromotive force may be consumed by a resistor existing outside the motor.

5 is a view showing a motion implemented in a washing machine according to an embodiment of the present invention.

5A illustrates a first motion in which the driving unit 140 rotates the drum one direction in the forward direction by applying forward torque to the drum 130 and braking the drum and then applying forward torque to the drum. Since the first motion is the same as the washing method according to the exemplary embodiment of the present invention described with reference to FIG. 2, a detailed description thereof will be omitted.

FIG. 5B illustrates a second motion in which the driving unit 140 continuously rotates the drum once by applying forward torque to the drum such that the gun in the drum 130 rises and falls. When the driving unit 140 applies forward torque to the drum 130, the drum rotates forward. When the drum 130 rotates, the artillery in the drum repeats rising and falling.

When the drum rotates at about 45 rpm, about 1 G, the gun in the drum rises and falls above half the drum height. When the drum rotates at 40 rpm or less, the artillery in the drum rises not more than half the height of the drum and falls as if rolling.

5 (c) and (d) show a third motion in which the driving unit 140 reciprocates the drum in the forward and reverse directions so that the gun in the drum 130 rises and falls.

FIG. 5C illustrates a motion in which the driving unit 140 reciprocates the drum in the forward and reverse directions such that the maximum height of the gun in the drum 130 rises and falls over half of the drum height during the third motion. The driving unit 140 applies a forward torque to the drum 130 to rotate the drum speed at about 60 rpm, which is a speed of 1G or more, so that the carriage in the drum adheres to the drum and rotates forward. After the maximum height of the gun rises above half the drum height, the drum is braked to drop the gun. The driving unit 140 applies a reverse torque to the drum 130 so that the carriage is attached to the drum to reverse rotation and ascends, and after the maximum height of the gun rises beyond half the drum height, the drum is braked to drop the gun.

FIG. 5D illustrates a motion in which the driving unit 140 reciprocates the drum in the forward and reverse directions so that the carriage in the drum 130 does not exceed half the height of the drum during the third motion. Similar to Figure 5 (c) but by rotating the drum speed to 40 rpm or less so that the drum in the drum rises not more than half of the drum height and falls as if rolling.

When the load of the fabric is large, it is preferable to repeatedly perform the motion of FIG. 5C among the second motion and the third motion as appropriate. The second motion is preferably rotated at about 45 rpm so that the maximum height of the gun rises above half the drum height and then falls. It is preferable that the execution time of the second motion is longer than the execution time of the motion of FIG. 5 (c) of the third motion.

When the load of the fabric is small, it is preferable to repeatedly perform the motion of FIG. 5C among the first motion and the third motion as appropriate. The second motion can also be appropriately mixed. It is preferable that the execution time of the (c) motion of FIG. 5 among the third motions is longer than the execution time of the first motion.

When the fabric is easily damaged or washed at night, it is preferable to mainly perform the motion of FIG. 5 (d) of the third motion.

In addition, in the rinsing process, it is preferable to repeatedly perform the (d) motion of FIG. 5 among the second motion and the third motion according to the amount of water.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted.

1 is a perspective view showing a washing machine according to an embodiment of the present invention.

2 is a view showing a washing method according to an embodiment of the present invention.

3 is a view for explaining reverse phase braking in the laundry method according to an embodiment of the present invention.

4 is a view for explaining the power generation braking in the laundry method according to an embodiment of the present invention.

5 is a view showing a motion implemented in a washing machine according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: cabinet 120: tub

130: drum 140: drive unit

Claims (20)

In one rotation of the drum of the drum washing machine in the forward direction, (A) applying a forward torque to the drum to rotate the gun in the drum to rise; (B) dropping the gun while braking the drum; And And (c) applying the forward torque to the drum to rotate and drop the dropped cloth. The method of claim 1, Washing method in the step (b) the maximum height of the cloth when the cloth falls in more than half the height of the drum. The method of claim 1, The step (b) is the washing method of braking the drum after the maximum height of the cloth exceeds half the drum height before the cloth falls. The method of claim 1, Washing method in which the carriage falls while the drum is decelerated in the step (b). The method of claim 1, At least a portion of the fabric in the step (b) falls past the centerline of the drum. The method of claim 1, Step (b) is the washing method of applying a reverse torque to the drum braking. The method of claim 1, In the step (b), the washing method of braking by consuming the electromotive force generated by forming a closed circuit in the motor of the drive unit for rotating the drum in the resistance. In one rotation of the drum of the drum washing machine in the forward direction, (P) rotating the drum by applying a forward torque to the drum; (Q) braking the drum to decelerate the drum; And And (r) rotating the drum by applying forward torque to the drum. The method of claim 8, Step (q) is the washing method of applying a reverse torque to the drum braking. The method of claim 8, In the step (q), the method of washing the brake by consuming the electromotive force generated by forming a closed circuit in the motor of the driving unit for rotating the drum in the resistance. (X) rotating the drum such that the maximum height of the fabric rises above half the drum height; (Y) the drum slows down so that the gun falls; And And (z) rotating the drum so that the maximum height of the dropped cloth rises again over half of the drum height. The method of claim 11, At least a portion of the fabric in the step (y) falls past the centerline of the drum. The method of claim 11, The step (y) is a washing method to decelerate by applying a reverse torque to the drum. The method of claim 11, In the step (y), the washing method of decelerating the electromotive force generated by forming a closed circuit in the motor of the driving unit for rotating the drum by using resistance. A drum in which the fabric is inserted and rotated; A drive unit for rotating torque by applying torque to the drum; And The driving unit applies the forward torque to the drum and brakes the drum, and then applies the forward torque to the drum to first rotate the first motion in the forward direction and the carriage in the drum so that the drum rises and falls. And a controller for continuously applying a forward torque to the second motion to rotate the drum by one. The method of claim 15, And the control unit executes the first motion and the second motion at least once in a washing stroke or a rinsing stroke. A drum in which the fabric is inserted and rotated; A drive unit for rotating torque by applying torque to the drum; And The driving unit applies the forward torque to the drum and brakes the drum, and then applies the forward torque to the drum to first rotate the drum in the forward direction and the carriage in the drum to rise and fall. And a control unit for implementing a third motion of reciprocating the drum in the forward and reverse directions. The method of claim 17, The maximum height of the cloth when the cloth falls in the third motion is more than half of the drum height. The method of claim 17, The maximum height of the cloth when the cloth falls in the third motion does not exceed half the height of the drum. The method of claim 17, And the control unit executes the first motion and the third motion at least once in a washing stroke or a rinsing stroke.

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