KR101913251B1 - Method for washing and Washing machine - Google Patents

Abstract

A washing method and a washing machine are provided. According to another aspect of the present invention, there is provided a washing method comprising: inputting a course for washing a bins stored in a drum with cold water; Supplying cold water into the tub surrounding the drum; And a step in which the drum is braked after the drum exceeds one half of the drum height during one rotation of the drum to drop the drum.

Cold water washing, cold water washing, laundry motion, drum motion

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing method and a washing machine, and more particularly, to a washing method and a washing machine having washing performance equal to that of hot water washing even when washing is performed with cold water.

Generally, a washing machine is a device for washing through washing, rinsing, dehydration, etc., so as to remove contamination from clothes, bedding, etc. (hereinafter referred to as "foam") by using water, detergent and mechanical action.

The washing machine is roughly divided into an agitator type, a pulsator type, and a drum type washing machine.

In the agitation type, the washing rods rising in the center of the washing tub are washed by rotating the washing rods to the left and right, and the swirl type washing is performed by using the frictional force of the water stream and the vagrant, Wash the drum with water, detergent, and cloth.

The drum washing machine includes a tub having an inside of a cabinet forming an outer appearance, a tub accommodating washing water, a drum disposed inside the tub, a motor for rotating the drum mounted on a rear side of the tub, And a drive shaft connected to the back surface side of the drum is formed. The drum is equipped with a lifter, which rotates when the drum rotates.

Such a washing machine is generally washed using hot water. The reason for using hot water is that the detergent is easy to dissolve and the reaction to the contamination of the can is good. However, energy is wasted because it requires a lot of energy to raise the water temperature.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a washing method and a washing machine capable of washing with cold water.

Another object of the present invention is to provide a washing method and a washing machine in which the washing performance is improved even when washing with cold water using a new drum motion.

Another object of the present invention is to provide a washing method and a washing machine for performing a new drum motion according to the amount of laundry discharged during cold water washing.

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

According to an aspect of the present invention, there is provided a washing method comprising: inputting a course for washing a bins received in a drum with cold water; Supplying cold water into the tub surrounding the drum; And a step in which the drum is braked after the drum exceeds one half of the drum height during one rotation of the drum to drop the drum.

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

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

First, there is an advantage of reducing energy by washing with cold water.

Second, there is an advantage of improving washing performance by performing new drum motion in cold water washing.

Third, there is also an advantage of performing a new drum motion according to the amount of laundry during cold water washing.

Fourth, there is also an advantage of improving washing performance by combining various drum motions during cold water washing.

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

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

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 illustrating 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 outer appearance, a tub 120 disposed inside the cabinet and supported by a cabinet, a drum 130 disposed inside the tub, A driving unit 140 for applying torque to the drum and rotating the drum, and a control panel 115 for receiving user input and controlling the overall operation of the washing machine.

The cabinet 110 includes a cabinet body 111, a cabinet cover 112 disposed on the front surface of the cabinet body and a top plate 116 coupled to the cabinet body. The cabinet cover 112 includes a catch and release hole 114 formed to allow the cloth to be able to move in and out, and a door 113 arranged to be rotatable in the left and right direction so that the catch and put-in hole can be opened and closed.

The tub 120 is disposed in the cabinet 110 so as to be able to be buffered by a spring (not shown) and a damper (not shown). The tub 120 receives wash water during washing. A drum 130 is disposed inside the tub 120.

The drum 130 is inserted and rotated. The drum 130 is formed with a plurality of holes through which washing water can pass, and a lifter 135 may be disposed to lift the drum 130 at a constant height during rotation of the drum. The drum is rotated by the driving unit 140.

The driving unit 140 applies torque or braking force to the drum 130. The driving unit 140 includes a motor and a switching element for controlling the motor. The driving unit 140 is controlled by the control unit 115 to implement various motions.

The control panel 115 receives user input, controls the overall operation of the washing machine, and displays the current operating state. The control panel 115 may be provided at an upper portion of the cabinet cover 112. The control panel 115 may include an operation button for accepting user input and a display device such as a microcomputer and a display for controlling the operation of the washing machine.

2 is a partially enlarged view of the control panel of the washing machine shown in FIG.

The control panel 115 of the washing machine according to an embodiment of the present invention includes a course selection dial 115a and a start button 115b.

The course selection dial 115a is a dial for selecting a course of laundry, allowing the user to rotate the dial to select a course. The course selection dial 115a is provided with various courses depending on the type of cloth, degree of contamination, washing method and washing time, and in the embodiment of the present invention, a cold care course capable of washing with cold water is provided .

Start button 115b As the button for starting the washing, the user selects the course with the course selection dial 115a and presses the start button 115b to start the washing on the selected course. The start button 115b may be provided with a pause function for temporarily stopping washing during washing.

When the user selects a cold care course for rotating the course selection dial 115a and washing with cold water and pressing the start button 115b, it is inputted that the cold care course is selected in the microcomputer of the control panel 115. [ The microcomputer of the control panel 115 proceeds the washing method according to the cold care course.

3 is a view showing various drum motions of a washing machine according to an embodiment of the present invention.

3 (a) shows a motion in which the driving unit 140 rotates the drum 130 in a predetermined direction so that the carriage is lifted at the lowest position of the carriage drum and falls at about half of the drum height (hereinafter referred to as "tumbling motion" ). In the tumbling motion, the drum 130 continuously rotates to about 45 rpm, and the drum in the drum 130 is washed by the impact force and the frictional force.

3 (b) shows a motion (hereinafter referred to as "rolling motion ") in which the driving unit 140 rotates the drum 130 in a predetermined direction so as to be lifted at the lowest position of the carriage drum to fall at a height not exceeding half of the drum height. Quot; motion "). In the rolling motion, the drum 130 continuously rotates at a speed of about 40 rpm or less, and the drum in the drum 130 falls down as it rolls and is cleaned by the bending force and the frictional force.

3C shows a state in which the driving unit 140 rotates the drum 130 in different directions so that the plow is lifted at the lowest position of the drum and falls below half of the drum height (hereinafter referred to as "scrub motion" Quot;). In the scrub motion, the drum 130 rotates at about 60 rpm or more to raise the can. The drive unit 140 brakes the drum 130 to fall over half of the drum height. After the drop, the drum 130 rotates in the opposite direction to raise the boll above half of the height of the drum, and then the drive unit 140 brakes the drum 130 to drop the boll. The bubble in the drum 130 is washed by a high impact force and frictional force using a drop. A detailed description of the scrub motion will be given later with reference to Fig.

3 (d) shows a state in which the driving unit 140 rotates the drum 130 in different directions so that the sled is lifted at the lowest position of the drum and falls down at about half of the drum height (hereinafter referred to as "swing motion" Quot;). In the swing motion, the drum 130 rotates in different directions below about 40 rpm. The blanks in the drum 130 fall down as they roll and are washed by the bending force and the frictional force.

3E shows a state in which the driving unit 140 rotates the drum 130 in a predetermined direction so as to be lifted at the lowest position of the fog drum so as to fall at the vicinity of the apex of the drum (hereinafter referred to as "step motion" )to be. In the step motion, the drum 130 rotates at about 60 rpm or more to raise the cloth. The drive unit 140 brakes the drum 130 to drop from the vicinity of the apex of the drum. After dropping the drum 130, the drum 130 rotates in the same direction to raise the cloth. The bubble in the drum 130 is washed by a high impact force using a drop. A detailed description of the step motion will be given later with reference to FIG.

4 is a view showing step motions in a washing method according to an embodiment of the present invention.

When the driving unit 140 applies a torque to the drum 130 in a predetermined direction, the drum rotates in a predetermined direction, and the drum rotates and rises (S210). When the driving unit 140 applies torque to the drum in a predetermined direction at the lowest position of the carriage drum 130, the drum rotates in a certain direction. When the drum 130 rotates in a certain direction, the puck is lifted by the lifter 135 and rotated in a certain direction. At this time, the drum 130 is preferably rotated at about 60 rpm or more so as to be able to rotate on the drum attached to the drum.

When the maximum height of the cloth exceeds half the height of the drum 130, the driving unit 140 brakes the drum to decelerate the drum (S220). When the drum 130 rotates in a predetermined direction and the warp exceeds about 165 degrees, the driving unit 140 brakes the drum. The driving unit 140 brakes the drum by a reverse phase braking and / or a power generation braking method, and preferably brakes by reverse phase braking.

When the driving unit 140 brakes the drum 130 to decelerate the drum, the laundry falls (S230). It is desirable that the bubble falls at about 180 degrees, which is the apex of the drum 130 at which the drop is maximum, so that the amount of impact is maximized. It is desirable that the drum 130 is decelerated to maintain a pause state while the bag falls. At least a portion of the cloth may fall through the centerline of the drum 130.

After the dropping of the bag, the driving unit 140 applies a torque to the drum 130 in a predetermined direction. Then, the drum rotates in a predetermined direction, and the dropped bag rotates and recharges (S240). When the bag is dropped, the driving unit 140 applies a constant-directional torque to the drum 130 again. When the drum 130 rotates in a certain direction, the puck is lifted by the lifter 135 and rotated in a certain direction. At this time, the drum 130 is preferably rotated at about 60 rpm or more so as to be able to rotate on the drum attached to the drum.

In the above-described step S210, the step S240 is executed while the drum 130 makes one revolution in a predetermined direction. The above-described embodiment shows a case where the drum rotates clockwise, but the drum can be rotated counterclockwise and step motion can be performed.

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

When the driving unit 140 applies torque to the drum 130 in a predetermined direction to rotate the drum in a predetermined direction, the drum in the drum rotates in a predetermined direction (S310). When the driving unit 140 applies torque to the drum in a predetermined direction at the lowest position of the carriage drum 130, the drum rotates in a certain direction. When the drum 130 rotates in a certain direction, the puck is lifted by the lifter 135 and rotated in a certain direction. At this time, the drum 130 is preferably rotated at about 60 rpm or more so as to be able to rotate on the drum attached to the drum.

When the drum rotates in a predetermined direction and the maximum height of the drum rises above half of the drum height, the driving unit 140 brakes the drum 130 to decelerate the drum (S320). When the drum 130 rotates in a predetermined direction and the warp exceeds about 165 degrees, the driving unit 140 brakes the drum. The driving unit 140 brakes the drum by a reverse phase braking and / or a power generation braking method, and preferably brakes by reverse phase braking.

While the driving unit 140 brakes the drum 130, the bag falls (S330). The driving unit 140 brakes the drum 130 to temporarily stop the drum, and at this time, the laundry may fall. It is preferable that the bellows drop at a position where the drop is maximum and the impact amount becomes maximum. Further, at least a part of the cloth may fall through the center line of the drum.

If the drum 140 rotates in the opposite direction by applying a torque to the drum 130 in a direction opposite to that of the drum 130, the drum in the drum rotates in the opposite direction (S340). When the driving unit 140 applies torque to the drum in the opposite direction, the drum rotates in the opposite direction. When the drum 130 rotates in the opposite direction, the pawls are lifted by the lifter 135 and rotate in the idle direction. At this time, the drum 130 is preferably rotated at about 60 rpm or more so as to be able to rotate on the drum attached to the drum.

When the gun rotates in the opposite direction and the maximum height of the gun rises above half of the drum height, the driving unit 140 brakes the drum 130 to decelerate the drum (S350). When the drum 130 rotates in the opposite direction and the boss exceeds about 165 degrees, the driving unit 140 brakes the drum. The driving unit 140 brakes the drum by a reverse phase braking and / or a power generation braking method, and preferably brakes by reverse phase braking.

While the driving unit 140 brakes the drum 130, the bag falls (S360). The driving unit 140 brakes the drum 130 to temporarily stop the drum, and at this time, the laundry may fall. It is preferable that the bellows drop at a position where the drop is maximum and the impact amount becomes maximum. Further, at least a part of the cloth may fall through the center line of the drum.

FIG. 6 is a flowchart illustrating a washing method according to an embodiment of the present invention, and FIG. 7 is a diagram illustrating drum motion corresponding to a step in the flowchart of FIG.

The course to be washed with cold water is selected (S601). When the user selects a cold care course for rotating the course selection dial 115a and washing with cold water and pressing the start button 115b, it is inputted that the cold care course is selected in the microcomputer of the control panel 115. [

The amount of the cloth contained in the drum 130 is detected (S602). Bulk sensing can be implemented in a variety of ways or devices. The driving unit 140 rotates the drum 130 at a constant speed for a predetermined period of time and then detects the amount of decay by measuring the deceleration time of the drum 130. The longer the deceleration time of the drum 130 is, The amount of discharged is calculated by the microcomputer of the control panel 115. [

An initial series is performed (S603). Since the cold water washing course is selected, the cold water is supplied from the outside and the cold water is received into the tub 120. It is preferable that the cold water at the initial water supply is mixed with the detergent and supplied into the tub 120.

It is determined whether the amount is within the set range (S603). Determine if the detected volume is below a certain level. The microcomputer of the control panel 115 determines drum motion by judging whether the amount of bubbles is large or small.

When the amount is within the set range, the droplet spraying is performed (S605). The threading is a process of flowing the cloth so that the cloth 130 contained in the drum 130 is wetted with the cold water supplied into the tub 120. In general, the capping is performed by tumbling motion, but when the capping amount is within the set range, it is preferable that the capping is performed by rolling motion as shown in FIG. That is, the driving unit 140 rotates the drum 130 at a low speed in a predetermined direction, so that the pouring roll falls as it rolls.

When the sedimentation is completed, the fallout motion is performed (S606). The falling-out motion means step motion or scrub motion as a motion in which the drum 130 is braked to drop the bob after the carriage has passed the half of the drum height while the drum 130 makes one rotation. The drum 130 is rotated at a speed of about 60 rpm or more to be able to rotate on the drum, and then the drum is braked, and the drum is washed by a high impact force using a drop. Preferably step motion is performed as shown in Fig.

After the falling motion is performed, the cooling motion is performed (S607). Since the falling motion repeats rapid acceleration and sudden braking, a high load is generated in the driving unit 140, so that a cooling motion may be required. The cooling motion can be implemented by various methods for lowering the load on the driving unit 140 and is implemented by performing tumbling motion with low real rate as shown in FIG. 6 in the embodiment of the present invention.

The actual rate is preferably about 50% when the driving unit 140 is driven to perform the motion and the time when the driving unit 140 is stopped, and the actual rate during the cooling motion is about 50%. The driving unit 140 is driven for about 8 seconds to perform the tumbling motion by rotating the drum 130, stopping the operation for about 8 seconds, and lowering the load on the driving unit 140.

In addition to lowering the load on the driving unit 140, the cooling motion also has the effect of loosening the loose boll due to the falling motion.

Depending on the embodiment, the cooling motion can be replaced by various cooling methods that operate the fan inside or cool the drive 140 using wash water.

It is determined whether the falling motion and the cooling motion have been repeated n times (S608). It is preferable that the falling motion is repeatedly performed by mixing with the cooling motion because a high load is generated. The cold motion is performed for a time not exceeding one minute, and then the cooling motion is repeated n times. The number n of repetitions depends on the selected course and the amount of the replenishment.

If it is repeated n times, general motion is performed (S609). Normal motion is one of tumbling motion, rolling motion, and swing motion. In general, the washing is performed by tumbling motion, but when the amount is within the set range, it is preferable that washing is performed by rolling motion as shown in FIG.

After the general motion is performed, it is preferable that the rinsing and dewatering steps be performed successively.

If the amount is out of the set range, the sedimentation (S610) and general motion are performed (S611). It is preferable that the droplet ejection is performed in a tumbling motion so that an overload does not occur in the driving unit 140 when the ejection amount is outside the set range. Further, it is preferable that the general motion is performed in a tumbling motion.

After the general motion is performed, it is preferable that the rinsing and dewatering steps be performed successively.

The experimental values for the washing performance and the energy consumption for cold water washing and hot water washing are as follows.

course Cold Care Normal Course (Warm) Washing performance (sum of reflectance) 208.2 206.9
energy
Consumption Hot water (L) 0 3.59 Cold water (L) 47.31 46.52 Conversion (wh) 0 170.5 Electricity (wh) 139.1 121.6 Total (wh) 139.1 292.1

In the table above, the experimental value for cold water washing is when washing was performed using step motion, which is a falling motion. According to the above table, the washing performance is improved and the energy consumption is reduced in cold washing by other washing methods according to the embodiment of the present invention.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

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

2 is a partially enlarged view of the control panel of the washing machine shown in FIG.

3 is a view showing various drum motions of a washing machine according to an embodiment of the present invention.

4 is a view showing step motions in a washing method according to an embodiment of the present invention.

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

6 is a flowchart illustrating a washing method according to an embodiment of the present invention.

FIG. 7 is a diagram showing drum motions corresponding to some steps in the flowchart of FIG. 6. FIG.

Description of the Related Art

110: cabinet 115: control panel

120: a tub 130: a drum

140:

Claims (15)

A course input step of inputting a course for washing the bins accommodated in the drum with cold water; A lot amount sensing step of sensing a lot amount in the drum accommodated in the drum after the course input step; A water supply step of supplying cold water into the tub surrounding the drum; A falling motion step in which when the sensed amount is within a set range, the drum rotates and the drum is braked after the pail exceeds half of the drum height to drop the pail; And a cooling motion step of reducing a load of a driving unit that rotates the drum after the falling motion step, The free fall motion step Rotating the drum in one of a clockwise direction and a counterclockwise direction so that the drum is rotated with the drum attached to the drum; and braking the drum when the drum rises above half of the height of the drum, Dropping the foil between 165 and 180 degrees, and repeating the steps, When repeating the step in the free fall motion step, the drum rotates only in one direction, The cooling motion step Rotating the drum in a clockwise or counterclockwise direction so as to repeatedly drop the laundry around the half of the height of the drum; and stopping the driving unit for a predetermined period of time. delete delete delete The method according to claim 1, A step of rotating the drum in a predetermined direction after repeating the free fall motion step and the cooling motion step so that the bag is lifted at the lowest position of the drum and drops as it rolls at a height not exceeding half the height of the drum Further included washing methods. The method according to claim 1, And a cooling step of cooling the driving unit by operating a fan to a driving unit that rotates the drum after the free fall motion step. The method according to claim 1, Further comprising a cooling step of cooling the driving unit that rotates the drum using the cold water after the falling motion step. delete A drum rotatable about which the canister is received; A control panel for inputting a course for washing the bins stored in the drum with cold water; A tub enclosing the drum and receiving cold water when a course for washing with the cold water is input to the control panel; And And a driving unit that rotates the drum to brake the drum after the pail exceeds half of the height of the drum to perform the falling motion in which the pail drops down, Wherein the drive unit rotates the drum at a constant speed for a predetermined period of time, decelerates the deceleration time to detect a discharge amount of the bag, and if the detected volume is within the set range, the drive unit controls the falling motion, Lt; RTI ID = 0.0 > a < / RTI > load, The free fall motion Rotating the drum in one of a clockwise direction and a counterclockwise direction so that the drum is rotated with the drum attached to the drum; and braking the drum when the drum rises above half of the height of the drum, Dropping the foil between 165 and 180 degrees, and repeating the steps, When repeating the step in the falling motion, the drum rotates only in one direction, The cooling motion Rotating the drum in a clockwise or counterclockwise direction so as to repeatedly fall down at about half the height of the drum; and stopping the driving unit for a predetermined period of time. delete delete delete 10. The method of claim 9, Further comprising a fan for allowing the driving unit to cool the driving unit after performing the falling motion. 10. The method of claim 9, Wherein the driving unit cools the driving unit using cold water stored in the tub after performing the falling motion. delete

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