KR101074959B1 - (A) drum type washing machine and method of sensing unballance of the same - Google Patents

Abstract

The present invention relates to an eccentric sensing device and a method for washing a drum washing machine to prevent the dehydration operation from being properly performed when washing a small amount of medium or less in a drum washing machine.

That is, the present invention detects the amount of water entering the dehydration stroke, and when the load is less than the small to medium amount, by applying the first rotational speed, which is a slope that can be attached to the drum less than the small to medium load, the load is not agglomerated. After spreading and sticking evenly to the drum, the second rotational speed, which is the existing rotational speed, is applied and the eccentricity is detected so that the dehydration stroke can be performed according to the result.

Therefore, the present invention can minimize the amount of eccentricity by starting the dehydration stroke in a state in which the laundry is evenly spread, it can shorten the time required to enter the dehydration stroke, the user does not occur dehydration error due to the eccentricity There is an effect to improve the satisfaction of using the product.

Drum Washing Machine / Single Load / Eccentric

Description

Drum washing machine and its eccentric detection method {(A) drum type washing machine and method of sensing unballance of the same}

1 is a cross-sectional view showing a general drum washing machine.

Figure 2 is a graph showing the eccentric detection process of the drum washing machine according to the prior art.

Figure 3 is a block diagram showing the control configuration of the drum washing machine according to the present invention.

4 is a flow chart showing a control method of a drum washing machine according to the present invention.

5 is a graph showing an eccentricity detection process for a small to medium load or less.

Explanation of symbols for main parts of the drawings

100: key input unit 200: quantity detection unit

300: control unit 400: load driving unit

500: motor 600: display unit

700: storage

The present invention relates to a washing machine, and more particularly, to a drum washing machine and an eccentric sensing method for preventing the detection of a single load when washing a small amount of medium or less in the drum washing machine.

In general, a washing machine performs washing strokes, rinsing strokes, and dehydration strokes by rotating a washing tank and a pulsator through a driving force of a motor, and putting washing water and laundry together inside a rotating tank and stirring them to wash laundry and washing. It is a device that washes using friction of water and a rotating tub.

These washing machines are classified into pulsator type, stirring type, drum type, etc. according to the washing method.

In general, a drum washing machine is a device that allows washing to be performed by using a rotating drum and a friction force of the laundry by receiving the driving force of the driving unit while detergent, washing water, and laundry are put into the washing drum. It's not tangled, and it's designed to give you a pounding and scrubbing wash effect.

Hereinafter, a structure of a general drum washing machine will be described with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing the structure of a general drum washing machine.

1 is a cross-sectional view showing the configuration of a general drum washing machine, a drum washing machine is rotatable about a tub (2) supported by a damper (7) and a spring (6) in the main body (1), and a horizontal axis within the tub. It is composed of a cylindrical drum (3) provided, and a drive motor (5) axially coupled to the drum.

The drive motor 5 is composed of a rotor 5b and a stator 5a at the rear of the tub 2, and a drum for transferring the driving force of the rotor 5b directly to the drum 3 without a pulley or a belt. The drum shaft 4 which rotates together with the rotor is directly connected to the rotor.

The front surface of the main body 1 is provided with a door 8 at a predetermined position to correspond to the opening of the drum 3, between the door and the drum is provided with a gasket 9 for maintaining a seal in the drum, the door The upper part of the (8) is provided with a controller panel 10 for receiving a user's operation command and controls the operation of the entire washing machine.

The drum washing machine configured as described above transmits the rotational force of the rotor 5b to the drum 3 through the washing shaft 4, and the laundry is lifted by the lifter 3a while the drum rotates, and then downward by gravity. As you fall, you will perform a laundry administration.

That is, the laundry pulled upward by the rotation of the drum (3) falls down by its own weight when it reaches a predetermined height and collides with the wash water, and the laundry is rubbed with the wash water while repeating this process several times. Is washed by.

After washing is performed by the above operation, a dehydration operation is performed. The rotary drum 3 is rotated at a high speed while driving the drain pump (not shown) to perform drainage through a drain line (not shown). Dehydration by centrifugal force.

However, the drum washing machine according to the related art configured as described above, as shown in FIG. 2, rotates the drum 3 up to a preset RPM, detects an eccentricity when the preset RPM is reached, and enters the present dehydrating stroke.

At the same slope as shown in FIG. 2, when the load is less than a small to medium amount, the single load or the dehydration entry time is too long to enter the dehydration stroke.

The present invention has been made to solve such a problem, the object of the present invention is to be able to detect a load of less than a small amount.

In addition, there is another purpose to be able to detect the eccentricity for the load below the small and medium amount.

Drum washing machine according to the present invention for achieving the above object in the drum washing machine having a drum and a motor, the user inputs a key input unit for selecting a course and course-specific operating conditions, the operation command is input through the key input unit If the amount of load detection unit for detecting the load degree, and the control so that the administration can be made according to the course selected by the user, and at the same time, when entering the dehydration stroke to control the entrance to the dehydration stroke in accordance with the load detected by the quantity detection unit And a load driver for controlling driving of the motor and other loads so that a corresponding stroke is performed according to a control signal of the controller.

Preferably, the quantity detector is characterized in that it detects any of the small amount, the small amount, the small amount, the weight, the large amount and the large amount of the quantity introduced into the drum.

More preferably, the controller is characterized by controlling the drum to be rotated at different rotational speeds by separating sections for a small amount of the quantity less than the quantity detected by the quantity detection unit.

In the eccentric detection method of the drum washing machine according to the present invention for achieving the above object, in the eccentric detection method of the drum washing machine provided with a drum, a quantity detection unit and a motor, selecting a desired washing course and inputting an operation command And, when the operation command is input, performing washing, rinsing, and dehydrating strokes according to the corresponding washing course, and controlling the rotational speed of the drum according to the amount of quantity detected through the quantity detecting unit when the dehydrating stroke starts. Detecting eccentricity and determining whether to proceed with the present dehydration administration is characterized by.

Preferably, the step of determining whether the dehydration operation proceeds to rotate the drum at a predetermined first rotational speed up to a preset first RPM when the detected amount is less than the small and medium amount, and the predetermined first RPM Rotating the drum to a preset second RPM at a preset second rotation speed, detecting an eccentricity when the second RPM is reached, and if the eccentricity is not generated in the sensing step, the dehydration stroke It consists of entering the step is characterized by.

More preferably, the preset first RPM is about 50 RPM, and the preset second RPM is about 108 RPM.

More preferably, the second rotational speed is faster than the first rotational speed.

Hereinafter, the drum washing machine and the eccentric detection method according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing a control configuration of a drum washing machine according to the present invention, Figure 4 is a flow chart showing an eccentric detection method of the drum washing machine according to the present invention, Figure 5 is an eccentric detection process for a load of less than a small amount This is a graph.

The drum washing machine according to the present invention, as shown in Figure 3, the key input unit 100 for inputting a user request command, and if the operation command is input through the key input unit 100 to detect the amount of load for detecting the load degree The control unit 200 and the control to control the stroke to be made according to the course selected by the user, and at the same time, the control unit for controlling the entrance to the dehydration stroke in accordance with the load detected by the quantity detection unit 200 when entering the dehydration stroke ( 300, a load driver 400 controlling the driving of the motor 500 and other loads to perform the corresponding stroke according to the control signal of the controller 300, and operating according to the control signal of the controller 300. The display unit 600 for displaying the status light, and the storage unit 700 for storing the menu and the like.

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

First, a power-on command is input through the key input unit 100, a user selects a desired washing course, and then inputs an operation command. Then, the display unit 600 displays the selected washing course and displays the washing progress.                     

In addition, the washing and rinsing stroke is performed according to the operation command input, and when the rinsing stroke is completed, the dehydrating stroke is entered. At this time, the amount of water is detected once again by entering the dehydration stroke through the quantity detecting unit 200. When the detected quantity is smaller than the small amount, the rotational speed of the drum (not shown) is classified into a plurality of bands. Drive it.

That is, when the quantity detected by the quantity detecting unit 200 is smaller than the small to medium amount, as shown in FIG. 5, in the initial stage of dehydration, the load of the smaller or smaller amount does not agglomerate and rotates in a drum (not shown) In the interval of about 40 to 50 RPM, the speed is increased to a preset first RPM (50 RPM) at a preset first rotation speed (400 ms & 350 ms / 1 rpm increase).

When the preset first RPM is exceeded, the laundry is rotated faster at a second rotational speed (190 ms & 160 ms / 1 rpm), which is an existing slope, so that the laundry is spread evenly in the drum (not shown), and then increases to the second preset RPM. After the second RPM (108 RPM) is reached to detect the eccentricity.

At this time, when the eccentricity detection result is less than the predetermined single value, the eccentricity detection value enters the present dehydration stroke when it is detected that there is almost no eccentricity.

Therefore, the drum washing machine according to the present invention is dehydrated early by considering that the load is not spread well, when the application of a certain inclination to the load of the small to medium-sized amount, the bundles are united to be detected as a single load as the eccentric value is largely detected. In the role of spreading the load is to rotate the drum at a slower rotation speed than the conventional inclination to spread the laundry evenly so that the eccentricity can be detected.                     

In the eccentric detection method of the drum washing machine according to the present invention configured as described above, referring to FIG. 4, first, when a user inputs a power-on command, a desired washing course is selected (S101 to S102).

When the washing course is selected and an operation command is input, washing and rinsing cycles are performed according to the selected washing course, and when the rinsing cycle is completed, it is determined whether a dehydration stroke is started (S104 to S105).

Subsequently, in the determination result (S105), when the dehydration stroke is started, the quantity is detected, and it is determined whether the detected quantity is smaller than the small amount (S106 to S108).

As a result of the determination (S108), if the detected quantity is smaller than the small to medium amount, it is increased to the preset first rotation speed up to the first preset RPM (S109).

In operation S110, it is determined whether the predetermined first set RPM is reached.

As a result of the determination (S110), when the preset first set RPM is reached, the preset second rotation speed is increased to the preset second set RPM (S111).

Subsequently, it is determined whether the preset second set RPM is reached (S112).

As a result of the determination (S112), when the preset second set RPM is reached, the eccentricity is detected (S113).

If it is determined that there is no eccentricity as a result of the detection of the eccentricity, the system enters the dehydration administration and performs the administration until the dehydration administration is completed (S114 to S116).                     

On the other hand, if the determination result (S114), the eccentricity is generated, it indicates whether the eccentricity is generated, and ends (S117).

In addition, in the determination result (S108), if the detected amount of water is more than the small and medium amount, the dehydration operation is performed according to a set condition (S118).

As described above, the drum washing machine and the eccentric detection method according to the present invention are intended to detect the eccentricity of the load less than the small and medium load in the drum washing machine, the load is a slope that can be attached to the drum well below the small and medium amount 1 The rotation speed is applied so that the loads below the small and medium amount can be unfolded and spread evenly to the drum, so that the dehydration stroke can be made.

As described above, the drum washing machine and the eccentric detection method according to the present invention have the following effects.

First, by detecting the load below the small to medium amount and applying an eccentric detection algorithm to discriminate from the load above the small to medium amount, it is possible to start the dehydration operation evenly in the state where the laundry is evenly spread.

Second, the amount of eccentricity can be minimized by starting the dehydration stroke in the state where the laundry is spread evenly.

Third, as the amount of eccentricity is minimized, the time required for entering this dehydration stroke can be shortened.

Fourth, as the dehydration error due to the eccentricity does not occur, the user's satisfaction with the product use can be improved.

Claims (7)

In a drum washing machine with a drum and a motor, A key input unit for selecting a course desired by the user and driving conditions for each course; A quantity detection unit for detecting a load level when an operation command is input through the key input unit; A control unit for controlling the administration to be performed according to the course selected by the user, and controlling the entrance to the dehydration stroke according to the load detected by the quantity detecting unit when entering the dehydration stroke; And, Includes a load driver for controlling the driving of the motor and other loads to perform the corresponding stroke according to the control signal of the controller, The controller rotates the drum at a preset first rotation speed up to a preset first RPM when the quantity detected by the quantity detector is less than or equal to a small to medium quantity, and when the preset first RPM is reached, the preset second rotation. Drum washing machine characterized in that for rotating the drum to a predetermined second RPM at a speed. The method of claim 1, The quantity detection unit Drum washing machine, characterized in that for detecting the amount of the small amount, small and medium, weight, medium and large quantities of the amount introduced into the drum. The method of claim 1, The control unit detects the eccentricity when the drum reaches the second RPM, and if the eccentricity does not occur, the drum washing machine characterized in that the control to enter the dehydrating stroke. In the eccentric detection method of the drum washing machine provided with a drum, a quantity detection unit and a motor, Selecting a desired washing course and inputting an operation command; Performing washing, rinsing, and dehydration operations according to the corresponding washing course when the operation command is input; And, When the dehydration stroke is started, including the step of detecting the eccentricity while controlling the rotational speed of the drum in accordance with the amount of the amount detected through the quantity detection unit comprising the step of determining whether to proceed to the dehydration stroke, Determining whether the dehydration administration proceeds, Rotating the drum at a first preset rotation speed up to a first preset RPM when the detected amount is less than a small amount; Rotating the drum to a preset second RPM at a preset second rotation speed when the preset first RPM is reached; Detecting an eccentricity when the second RPM is reached; If the eccentricity does not occur in the detection step, the eccentric detection method of the drum washing machine, characterized in that the step of entering the dehydrating stroke. delete The method of claim 4, wherein The preset first RPM is 50RPM, the preset second RPM is an eccentric detection method of the drum washing machine, characterized in that 108RPM. The method of claim 4, wherein The second rotational speed is an eccentric detection method of the drum washing machine, characterized in that for rotating at a speed faster than the first rotational speed.

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