KR101259799B1 - Spinning method of washing machine - Google Patents

Abstract

The present invention is a dewatering method of a washing machine in which a drum is rotated at a high speed so that the laundry cloth introduced into the drum is centrifugally dehydrated. When the dewatering AlMP of the drum is accelerated to reach the resonant AlMP, the dewatering AlMP of the drum is resonant AlPM. Resonance avoidance step is provided so that the dewatering AlMP is lowered to escape, the water in the tub is drained before entering the resonant band of the washing machine when dewatering the laundry cloth, even if the drum is accelerated above the resonant AlMP, the inner circumferential surface of the tub Accordingly, there is an advantage that water flows or a phenomenon in which water accumulates inside the tub is prevented.

Drum Washing Machine, Tub, Drum, Motor, Washcloth, Dewatering, Resonance

Description

Spinning method of washing machine

1 is a cross-sectional view showing an internal configuration of a drum washing machine according to the present invention;

2 is a flow chart illustrating a dewatering method of a drum washing machine according to the present invention;

Figure 3 is a graph showing the RPM of the motor during dehydration of the drum washing machine according to the present invention,

DESCRIPTION OF THE REFERENCE NUMERALS

2: cabinet 4: spring

6: damper 8: tub

10: drum 12: lifter

14: motor 16: cabinet cover

18: Door 20: Control Panel

22: Hall sensor 24: Top plate

30: water supply device 32: water supply hose

34: water supply valve 36: detergent supply device

40: drainage 42: drainage hose

44: drain pump

The present invention relates to a dehydration method of the washing machine, and more particularly, to a dehydration method of the washing machine that can reduce vibration and noise during dehydration, and can improve the dewatering performance.

In general, a washing machine is a device for cleaning a laundry cloth by washing, rinsing, and dehydrating to remove contamination from clothes, bedding, etc. (hereinafter, referred to as 'laundry cloth') by using water and detergent.

When the washing machine is supplied with water and detergent to the tub and a laundry cloth is put into the drum disposed inside the tub, the drum rotates by a motor, and the washing stroke, the rinsing stroke, and the dehydration stroke of the washing cloth proceed.

That is, in the washing stroke, the laundry cloth is washed by the cleaning power of the detergent supplied with water, in the rinsing stroke, the washed laundry cloth is rinsed with clean water, and in the dehydration stroke, the rinsed laundry cloth is centrifugally dehydrated.

Here, the dehydration step is the eccentric detection step of determining whether the dehydration of the laundry cloth is put into the drum and whether or not to enter the dehydration, and the liver degassing step in which the drum is dehydrated by rotating the drum at a low speed dehydration AlpM, and the drum The high speed dewatering AlPM is rotated by the deboned laundry cloth is made of a deboning step of the main dewatering.

In the desorption step and the desorption step as described above, the drum is kept constant as the desorption AlpPM and the desorption AlpPM and the drainage is operated, so that the water dewatered from the laundry cloth is drained to the outside.

However, the dehydration method of the washing machine according to the prior art vibrates in the resonance band of the washing machine when the washing cloth in the drum is eccentric or a lot of foam is generated inside the tub when the washing cloth is dewatered, as the AlMP of the drum is accelerated. In addition to the large noise and noise, there is a problem that the water dewatered by the tub flows along the inner circumferential surface of the tub by the rotational force of the drum.

In addition, when the dehydrated water flows along the inner circumferential surface of the tub, the drainage performance of the dehydrated water is greatly reduced, so that a considerable amount of water is filled in the tub.

When the water is filled and rotated in the tub as described above, since the dewatered water flows back into the drum to wet the cloth, there is a problem that the dewatering performance of the washing machine is also greatly reduced.

The present invention has been made to solve the above problems, an object of the present invention is to smoothly drain the dehydrated water inside the tub in the resonant band of the washing machine during the dehydration of the laundry cloth, so that the dehydrated water to the inner peripheral surface of the tub The present invention provides a dehydration method of a washing machine that can prevent the phenomenon of flowing or accumulated inside the tub, thereby improving the dewatering performance of the laundry cloth.

In addition, another object of the present invention is to provide a dehydration method of the washing machine that can prevent the phenomenon that the water is filled in the tub, the phenomenon that a large amount of vibration and noise in the resonance band of the washing machine when the washing cloth is dewatered. .

The present invention for realizing the above object is in the dewatering method of the washing machine in which the drum is rotated at high speed so that the laundry cloth introduced into the drum is centrifugally dehydrated, when the dewatering AlPM of the drum is accelerated to reach the resonance AlMP, the drum A resonance avoiding step is provided in which the dewatering AlMP drops so that the dewatering AlMP goes out of the resonance AlPM.

In the resonant avoiding step, the drum is rotated for a predetermined time with a dewatering AlPM smaller than the resonant ALPM.

When the drum is rotated for a set time, the drum is accelerated to a dewatering AlPM larger than the resonant AlMP to perform the main dewatering of the laundry cloth.

The dewatering AlPM in the resonance avoiding step is characterized in that the AlMP for washing cloth close to the inner surface of the drum.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view showing an internal configuration of a drum washing machine according to the present invention.

As shown in FIG. 1, the drum washing machine according to the present invention has a cabinet 2 which forms an exterior, and is bufferably installed by a spring 4 and a damper 6 inside the cabinet 2 and is internally provided. A tub (8) in which washing water is received, a drum (10) rotatably disposed inside the tub (8), and a plurality of manual holes (10A) through which the washing water passes and in which laundry cloth is accommodated; A lifter 12 installed on an inner side of the drum 10 to lift the laundry cloth to a predetermined height so that the laundry cloth falls by gravity when the drum 10 rotates, and a rear portion of the tub 8; A motor 14 for rotating the drum 10, a cabinet cover 16 mounted at the front of the cabinet 2 and having a laundry cloth entrance 16A at the center thereof, and the cabinet cover 16. A door 18 rotatably installed at the door 18 to open and close the laundry cloth entrance and exit 16A, and The control panel 20 disposed above the cabinet cover 16 to display the operation of the drum washing machine 1 and to control the operation of the drum washing machine 1, and is installed at one side of the motor 14, so that the motor 14 is configured to include a plurality of Hall sensors 22 for detecting the ALPM and the rotation angle.

Here, a top plate 24 is mounted on an upper surface of the cabinet 2, and a water supply hose 32 and a water supply valve are provided below the top plate 24 to supply water from the outside to the inside of the tub 8. A water supply device 30 composed of 34 is provided.

The detergent supply device 36 is installed on the water supply passage of the water supply device 30 so that detergent can be supplied to the tub 8 together with the water supplied by the water supply device 30.

In addition, a drainage device 40 including a drain hose 42 and a drainage pump 44 is installed at the lower side of the tub 8 to discharge the washing water used for washing and rinsing to the outside.

In addition, the plurality of Hall sensors 22 are sensors for generating a pulse signal according to the position change of the motor 14 and measuring the ALPM and the rotation angle of the motor 14 by the pulse signal.

Looking at the operation of the drum washing machine according to the present invention configured as described above are as follows.

First, after the laundry cloth is introduced into the drum 10 through the laundry cloth entrance 16A of the drum washing machine 1, the door 18 is closed so that the laundry cloth entrance 16A is sealed, and the drum 10 A proper amount of detergent is added to the detergent supply device 36 according to the laundry cloth put into the).

When the drum washing machine 1 is operated and operated, the amount of laundry cloth put into the drum 10 is sensed, and a washing method such as a washing course, a washing time, a water level, a rinsing frequency, etc. is set according to the amount of the laundry. .

The water supply valve 34 of the water supply device 30 is opened to supply water to the inside of the tub 8, and the detergent introduced into the detergent supply device 36 is water supplied by the water supply device 30. It is supplied to the tub 8 in a mixed state with.

When the wash water is stored in the tub 8 to a predetermined level, after the water supply valve 34 is sealed, the drum 10 is inverted left and right by the motor 14 to wash the washing cloth to wash the washing cloth. .

At this time, the laundry cloth is raised to a certain height by the drum 10 and the lifter 12 and then dropped by gravity, the contamination is removed by the free fall force of the laundry cloth and the cleaning power of the detergent.

When the laundry cloth is washed for a predetermined washing time, the drain pump 44 of the drainage device 40 is driven so that the wash water in the tub 8 is drained out of the drum washing machine 1 through the drain hose 42. do.

When the washing stroke is completed as described above, the drum 10 is rotated by the motor 14 to the dewatering AlPM so that the wash water contained in the laundry cloth is centrifugally dewatered.

Then, the water supply valve 34 is opened so that clean water is supplied to the inside of the tub 8 again until the set water supply level, and the drum 10 is inverted left and right by the motor 14 to the rinsing ALPM, thereby rinsing. Rinse the laundry for an hour.

Thereafter, the drain pump 44 of the drainage device 40 is driven so that the water used for rinsing is drained out of the drum washing machine 1 through the drain hose 30. In addition, the rinsing stroke is repeatedly performed several times up to the set number of rinsing cycles.

When the rinsing stroke as described above is completed, the drum 10 is rotated by the motor 14 to the dehydration AlpM to completely centrifugal dehydration of the laundry cloth.

At this time, as the laundry cloth is centrifugally dewatered, water is discharged to the tub 8 through the hand 10A of the drum 10, and the water discharged to the tub 8 is discharged by the drainage device 40. Drained to the outside of the drum washing machine (1).

2 is a flow chart illustrating a dewatering method of the drum washing machine according to the present invention, Figure 3 is a graph showing the AlPM of the motor during dehydration of the drum washing machine according to the present invention.

On the other hand, the dewatering method of the drum washing machine according to the present invention, as shown in Figures 2 and 3, and a quantity detection step (A section) for detecting the amount of the laundry cloth to determine the optimal dehydration time or dewatering ALPM; In order to determine the dehydration entry or inflated, the eccentric detection step (B section) for detecting the eccentricity of the laundry cloth, and the low speed dewatering ALPM after the quantity detection step (A section) or the eccentric detection step (B section) The drum 10 is rotated so that the laundry cloth is dehydrated in a simple dehydration step (D, E section), and after the simple dehydration step (D, E section), the drum 10 is rotated by a high speed dewatering AlPM. When the dehydration step (F section) and the dehydration step (D, E section) or the main dehydration step (F section) of the washing cloth is dehydrated, and the dewatering AlPM of the drum 10 is accelerated to a resonance rpm. The dewatering AlPM of the drum 10 is dropped and It comprises a resonance avoidance phase is rotated for a time (period G).

In the quantity detection step (Section A), the drum 10 is accelerated by the motor 14 to reach a first set rpm, and when the motor 14 reaches the first set rpm, the motor 14 is driven. It is turned off after being maintained for a predetermined time with the first setting RPM1. (See S1)

At this time, the pulse width modulation (PWM) duty value when the constant speed is maintained at the first set RPM (rpm1), and the rotation angle of the force after turning off the motor 14 are measured by the Hall sensor 22. The amount of laundry cloth put into the drum 10 is sensed.

In the eccentric detection step (B section), the drum 10 is accelerated by the motor 14 to reach a second set Rpm (rpm2) larger than the first set Rpm (rpm1), and the second set Rpm (rpm2). When the motor 14 is maintained at the second set rpm (rpm2) for a predetermined time and then turned off, the drum is changed to an rpm ripple when the second set rpm (rpm2) is maintained at a constant speed. (10) detect the inside of the laundry cloth eccentricity (see S2, S3, S4).

Here, if the amount of eccentricity sensed in the eccentricity detection step (section B) is determined to be greater than or equal to the reference eccentricity, the eccentricity detection (section B) is performed again after performing the inflated (section C) to remove the eccentricity.

On the other hand, if the amount of eccentricity detected in the initial eccentricity detection step (Section B) or the amount of eccentricity detected after the inflated (Section C) is less than a set value, the dehydration step (D, E) is entered.

The second setting RPM (rpm2) is an AlMP, which cannot be flowed because the laundry cloth is in close contact with the inner surface of the drum 10, but the first setting RPM (rpm1) is a laundry cloth inside the drum 10. It is AlPM that can be released while flowing.

The simple dehydration step (D, E section) is a first liver dehydration process (D) in which the laundry cloth is dehydrated first while the drum 10 is rotated to a third set ALPM (rpm3) higher than the second set ALPM (rpm2). Section) and a second inter-dehydration process (Section E) in which the laundry cloth is dehydrated while the drum 10 is rotated by a fourth setting RPM4 higher than the third setting RPM3. (See S5, S6)

Here, in the first intermittent process (Section D), the drum 10 is driven by the motor 14 to reach the third set RPM (rpm3) from the second set RPM (rpm2) of the eccentricity detecting step (Section B). Is accelerated and the motor 14 is maintained for a predetermined time as the third set Rpm (rpm3) and then decelerated again to the second set Rpm (rpm2) when the third set Rpm (rpm3) is reached.

Due to the first liver degassing process (D section), a lot of water is centrifugally dehydrated in the laundry cloth, and the drum 10 has the second setting ALPM so that the water stored in the tub 8 can be smoothly drained. rpm2) for constant time rotation (D 'section).

In the second intermittent process (Section E), the drum 10 is driven by the motor 14 to reach the fourth set RFm (rpm4) from the second set RPM (rpm2) of the first intermittent process (Section D). ) Is accelerated and the motor 14 is decelerated back to the second set RPM2 when the fourth set RPM4 is reached.

In the second liver degassing process (Section E), the drum 10 has a second setting alpha so that the water centrifugally dehydrated in the laundry cloth can be smoothly drained from the tub 8 as in the first liver degassing process (Section D). Constant rpm rotation (E 'section) is carried out for a predetermined time at (rpm2).

In the main dehydration step (F section), the drum 10 is accelerated by the motor 14 to reach the sixth set RMP (rpm2) of the second inter-dehydration process (Section E). When the sixth set rpm (rpm6) is reached, the motor 14 is maintained for the predetermined time for the sixth set rpm (rpm6) and then turned off. (See S7, S12)

As described above, since the drum 10 is rotated at a high speed with the sixth set RPM (rpm6), most of the water is removed from the laundry cloth that has passed through the main dehydration step (F section).

In the resonance avoidance step (G section), as the drum 10 is accelerated in the simple dehydration step (D, E section) or the main dehydration step (F section), the dewatering AlPM of the drum 10 is a drum washing machine 1 When the resonance rpm of the Rx is reached, the fifth setting Rpm (rpm5) which is uniformly lowered from the resonance rpm so that the dehydration RPM of the drum 10 may escape from the resonance rpm. The drum 10 is rotated at a constant speed for a set time. (See S8, S9, S10, S11)

The drum washing machine 1 has resonance bands of different sizes according to an internal configuration, and the resonance rpm refers to a minimum RF of the resonance band.

In the resonant avoidance step (G section), the drum 10 is rotated for a set time with a fifth set Rpm (rpm5) smaller than the resonance rpm, and the fifth set Rpm (rpm5) is the drum ( 10) it is AlPM which does not fall close to the laundry cloth on the inner side.

In the present embodiment, only the dehydration step (F section) of the dehydration of the drum 10 will be described as limited to reach the resonance rpm (RPM).

That is, the resonance rpm is an RMP of a size larger than the fourth set RPM4 and smaller than the sixth set RPM6, so that the drum 10 accelerates in the dehydration step (F section). In the process, the dewatering AlPM of the drum 10 reaches a resonance rpm.

On the other hand, when the RPM of the drum 10 reaches the resonance rpm, and drops to the fifth set rpm (rpm5), when the drum 10 is rotated for a set time, the drum 10 is resonant RF The dewatered water is smoothly drained by the drainage device 40 in the process of accelerating to (resonance rpm).

Thus, when the drum 10 is re-accelerated at a resonance rpm or at a sixth set rpm greater than the resonance rpm, water is generated inside the tub 8. Since it does not exist, the phenomenon that water dewatered from the laundry cloth flows along the inner circumferential surface of the tub 8 by the rotational force of the drum 10 is prevented.

When the phenomenon in which water flows along the inner circumferential surface of the tub 8 is prevented as described above, the dewatering performance in the main dehydration step (F section) is greatly improved, so that water is not drained from the tub 8 continuously. The drainage defects that are accumulated are also solved.

In addition, when the drum 10 is rotated to the RF of the resonance band, the problem that the vibration and noise are greatly generated by the water stored in the tub (8) is also prevented.

As described above, the dewatering method of the washing machine according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited to the above-described embodiments and drawings, and various modifications may be made by those skilled in the art within the technical scope of the present invention. Of course it is possible.

The dehydration method of the washing machine according to the present invention operated as described above is provided with a resonant avoiding step of the dehydration AlMP is lowered so that the dewatering AlMP of the drum is out of the resonance AlMP when the dehydration AlMP of the drum is accelerated to reach the resonance AlMP, washing cloth When dehydration of the water in the tub before entering the resonant zone of the washing machine is drained, even if the drum is accelerated beyond the resonance Alphm to prevent the water flowing along the inner circumferential surface of the tub or the accumulation of water inside the tub There is an advantage.

In addition, since water does not flow along the inner circumferential surface of the tub or water does not accumulate inside the tub, the dehydration performance of the washing machine is improved.

In addition, even if the drum is rotated to the resonance AlPM, there is an advantage that the phenomenon that the vibration and noise caused by the water stored in the tub during the dehydration is largely prevented.

Claims (7)

delete delete delete delete delete In the dewatering method of the washing machine comprising a tub containing the wash water, and a drum rotatably provided in the tub to accommodate the laundry cloth, Draining the wash water used for washing or rinsing from the tub; Accelerating the drum; Slowing down the rotational speed of the drum when the rotational speed of the drum reaches the resonance ALPM; Rotating the drum for a set time at the reduced rotational speed, and draining the washing water dewatered from the laundry cloth from the tub; And After the set time has elapsed, dehydrating method of the washing machine comprising the step of accelerating the rotational speed of the drum to a larger than the resonance PM. The method of claim 6, Rotating the drum for a set time at the reduced rotation speed, The dewatering method of the washing machine, characterized in that the drum is rotated at a speed that the laundry cloth can be in close contact with the inner surface of the drum.

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