KR19980039512A - Operation control method and operation control device of washing machine - Google Patents

Abstract

When an excessive amount of water overflows during washing during operation of a washing machine, an operation control method and an operation control apparatus for a washing machine for draining the washing water in the washing tank and controlling the washing machine to be operated are disclosed. When the washing machine is in operation, it is determined whether the washing water overflows, and when the washing water overflows while the washing machine is in operation, draining is performed for a predetermined time. If the wash water is drained for the set time, the washing machine operates normally. Prevents the overflow of wash water during operation of the washing machine to improve the durability of the washing machine and the convenience of using the washing machine.

Description

Driving control method and driving control device of the washing machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving control method and an operation control device for a washing machine. In particular, when an excessive amount of water overflows during washing during operation of the washing machine, the washing machine operates to control the drainage of the washing water in the washing tank and to operate the washing machine. A control method and an operation control apparatus.

Generally, washing machines are classified into pulsator type washing machines, agitator type washing machines, and drum type washing machines according to the washing method. The dual pulsator type washing machine has a pulsator rotatably mounted at the bottom of the washing tank to generate water flow in the washing tank. In the pulsator type washing machine, the pulsator is driven by a motor to generate a swirling water flow in the washing tank, and the laundry is washed as the swirling water stream impacts the laundry.

The pulsator type washing machine is widely used for home use, and is divided into a dual type washing machine in which a washing tank and a dehydrating tank are separately installed in the washing machine, and a solar type washing machine in which the washing tank performs the role of the dehydrating tank.

1 is a cross-sectional view showing the configuration of a general pulsator type washing machine.

As shown, in the general pulsator type washing machine 100, a pulsator 104 is rotatably mounted on the lower portion of the washing tank 102 for storing laundry, and generates water flow in the washing tank 102. The dehydration tank 106 in which a plurality of water holes 108 are formed on the sidewall is installed separately from the washing tank 102.

A washing motor 110 generating a driving force for rotating the washing tub 102 is mounted at the bottom of the washing machine 100. The first pulley 112 is connected to the washing motor 110. The pulsator drive shaft 116 extends downward in the pulsator 104. A second pulley 114 for rotating the pulsator drive shaft 116 is connected to the pulsator drive shaft 116. The first pulley 112 and the second pulley 116 are connected to each other by a belt 118 so that the driving force of the washing motor 110 can be transmitted to the pulsator 104.

In addition, the lower side of the washing machine 100 is connected to the washing tank 102 is equipped with a drain valve 120 for discharging the washing water in the washing tank (102). The drain valve 120 is connected to the drain hole 122 to discharge the wash water to the outside.

The washing motor 110 generating a driving force for rotating the washing tub 102 is mounted at the bottom of the washing machine 100. The rotational force of the washing motor 110 is transmitted to the pulsator drive shaft 116 through the first pulley 112 and the second pulley 114, and thus the pulsator coupled with the pulsator drive shaft 116. The eater 104 rotates to generate water flow in the washing tub 102. The water flow generated by the pulsator 104 impacts the laundry contained in the washing tub 102, and the laundry is washed. The time for washing the laundry is adjustable by a timer (not shown).

However, in the general pulsator washing machine configured as described above, the countermeasure against the phenomenon in which the washing machine overflows while the washing machine is running while the water supply amount is large in the washing tank is insufficient. When the amount of water supplied to the washing machine overflows the washing water during operation of the washing machine, deterioration of the washing motor mounted on the lower part of the washing machine may be caused, thereby deteriorating durability of the washing machine. In addition, when the washing machine is located in a living room or the like, overflowing washing water may be accumulated on the floor during laundry driving, which may cause inconvenience in use of the washing machine.

The first object of the present invention was devised to solve the above problems is to detect the overflow of the washing water during the operation of the washing machine, if the overflow of the washing water is detected by draining the washing water in the washing tank for a predetermined time An object of the present invention is to provide an operation control method of a washing machine, which can prevent the overflow phenomenon and improve the durability and convenience of use of the washing machine.

In addition, a second object of the present invention is to provide an apparatus suitable for performing the above operation control method.

1 is a cross-sectional view showing the configuration of a general pulsator type washing machine.

2 is a block diagram illustrating an operation control apparatus of a washing machine according to an embodiment of the present invention.

3 is a configuration diagram illustrating an example of a washing machine equipped with the overflow detection device of FIG. 2.

4 is a flowchart illustrating an operation control method of a washing machine according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawing

200: water level sensor 210: key input unit

220: microcomputer 230: display unit

240: drain valve 300: washing water overflow detection device

314: Washing water overflow sensor

In order to achieve the first object of the present invention, the present invention comprises the steps of determining whether the washing water overflows when the washing machine is in operation;

Performing drainage for a predetermined time when the washing water overflows during operation of the washing machine; And,

When the washing water is drained for a predetermined time, it provides a method of controlling the operation of the washing machine consisting of operating the washing machine normally.

In addition, in order to achieve the second object of the present invention, the present invention, the water level sensor unit is installed in the washing tank senses the water level of the wash water and outputs a signal according thereto;

A washing water overflow detection device installed at an upper portion of the washing tank to detect an overflow phenomenon of the supplied wash water and output a signal according to the washing water overflow;

Determining the overflow state of the washing water during the operation of the washing machine by receiving the signal output from the washing water overflow detection device, if the washing water overflows, controls to perform the drainage operation for a set time, and to display it visually during the drainage operation Micom;

A display unit configured to receive an output signal of the microcomputer and display an operating state of the washing machine; And,

It provides an operation control device for a washing machine consisting of a drain valve for discharging the wash water supplied to the outside in response to the output signal of the microcomputer.

The present invention prevents the overflow of washing water during operation of the washing machine to improve the durability of the washing machine and to improve the convenience of use of the washing machine.

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

2 is a block diagram showing an operation control apparatus of a washing machine according to an embodiment of the present invention, Figure 3 is a block diagram showing an example of a washing machine equipped with an overflow detection device, Figure 4 is a present invention 1 is a flowchart illustrating a driving control method of a washing machine according to an embodiment of the present disclosure.

In the overflow detection device according to the present invention, as shown in FIG. 3, the washing water overflow detection device 300 is mounted on the washing tub 102. The washing water overflow detection device 300 inserts a washing water inflow pipe 310 having a predetermined diameter through the upper portion of the washing tank 102 and made of a plastic material. The washing water inlet tube 310 is horizontally connected to the washing tub 102 to receive the overflowing wash water from the washing tub 102. One side of the wash water inflow pipe 310 has a bent portion 312 of a predetermined angle, and the wash water overflow detection sensor 314 is mounted to the lower portion of the bent portion 312. As the washing water overflow detection sensor 314, a pressure sensing switch operating on / off by the pressure of the washing water flowing out of the washing tank 102 is used.

Referring to the configuration of the control device of the present invention, as shown in Figure 2, the water level sensor unit 200 is connected to the input terminal of the microcomputer 220. The water level sensor unit 200 is installed at a predetermined position in the washing machine detects the water level of the water supplied to the water supply and applies a signal corresponding thereto to the microcomputer 220. The key input unit 210 is connected to an input terminal of the microcomputer 220. The key input unit 210 inputs a signal corresponding to the microcomputer 220 by a user's key manipulation. The input terminal of the microcomputer 220 is equipped with a washing water overflow detection device 300 for detecting the washing water overflow in the washing tank.

In addition, the display 230 for visually displaying the operating state of the washing machine to the user is connected to the output terminal of the microcomputer 220. When the microcomputer 220 overflows the wash water, the display unit 230 displays the user when the washing machine stops operating and performs the wash water drainage operation. The output terminal of the microcomputer 220 is equipped with a drain valve 240 for draining the wash water supplied in the washing tank, the drain valve 240 is supplied to the washing tank in response to the control signal of the microcomputer 220 Drain the wash water.

In the washing machine according to the present invention configured as described above, when the washing machine starts to operate, the microcomputer 220 receives the signal output from the washing water overflow detection device 300 to detect the overflow of the washing water and thus to the microcomputer 220. Apply the signal accordingly. The microcomputer 220 receives the signal of the washing water overflow detection device 300 and determines the overflow state of the washing water, and if it is determined that the washing water is excessively overflowed, the microcomputer 220 outputs a control signal to the drain valve 240 to allow the washing machine to overflow. After washing the water for a certain period of time, the washing machine is operated again. At this time, the drain valve 240 is preferably operated for 10 seconds to 60 seconds.

Detailed operation of the operation control method of the washing machine as described above will be described with reference to FIG.

As shown in FIG. 4, the microcomputer 220 determines whether the washing machine is in operation (S1). When it is determined that the washing machine is in operation, the washing machine receives a signal from the washing water overflow detection sensor 314 installed in the upper portion of the washing tank 102 to determine whether the washing machine overflows the washing water during operation (S2).

That is, the upper part of the washing tub 102 is inserted into the washing water inlet tube 310 made of a plastic material so that the washing machine receives the overflowing washing water during operation. Therefore, when a lot of washing water flows into the washing water inlet tube 310 while the washing machine is in operation, the washing machine is mounted on the bent portion 312 of the washing water inlet tube 310 and is discharged from the washing tank 102 by the pressure of the washing water. Washing water overflow detection sensor 314 consisting of a pressure detection switch to operate on / off inputs a predetermined signal to the microcomputer (220). Therefore, the microcomputer 220 determines the overflow of the wash water in the washing tank 102.

If it is determined that the washing water does not overflow after the determination of the microcomputer 220, the washing machine operates normally (S5). However, when the microcomputer 220 determines that the washing machine overflows the washing water during operation, the microcomputer 220 outputs a control signal to the drain valve 240 to open the drain valve for a predetermined time. That is, the microcomputer 220 operates the drain valve 240 when a signal is input from the washing water overflow detection sensor 314 to discharge the washing water in the washing tank 102 to the outside to reduce the water level in the washing tank ( S3).

After the step, the microcomputer 220 determines whether the drain valve 240 is operated for a set time, for example, about 30 seconds (S4), and if the drain valve 240 is opened for the set time, the washing machine is operated normally. Operation (S5).

Here, the microcomputer 220 overflows the washing water and outputs a control signal to the display unit 250 when performing the operation of draining the washing water to indicate that the washing water overflow prevention operation. Therefore, the washing machine performs the draining operation during the driving operation to prevent the situation in which the user suspects the failure of the washing machine.

As can be seen from the above description, the present invention detects the overflow phenomenon of the washing water during the operation of the washing machine, when the washing water overflows to drain the washing water for a predetermined time to improve the durability of the washing machine, convenience of use of the washing machine Promote

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited thereto and may be improved or modified within the ordinary knowledge of a person skilled in the art.

Claims (5)

(I) determining whether the washing water overflows when the washing machine is in operation; (II) performing draining for a predetermined time when the washing water overflows during operation of the washing machine; And, (III) If the washing water is drained for a set time, the operation control method of the washing machine comprising the step of operating the washing machine. The method of claim 1, wherein in step II, drainage is performed for 10 seconds to 60 seconds. A water level sensor unit 200 installed in the washing tank to detect a level of the washing water and output a signal according to the level; Washing water overflow detection device 300 is installed in the upper portion of the washing tank 102 to detect the overflow phenomenon of the water supplied to the water to output a signal according to the washing water overflow; Determining the overflow state of the wash water during the operation of the washing machine by receiving the signal output from the washing water overflow detection device 300, if the wash water overflows to control the drainage operation for a set time, and visually during the drainage operation A microcomputer 220 for controlling the display; A display unit 240 for receiving an output signal from the microcomputer 220 and displaying an operating state of the washing machine; And, Receiving the output signal of the microcomputer 220 operation control device of the washing machine consisting of a drain valve 240 for discharging the water supplied to the outside. According to claim 3, The washing water overflow detection device 300 detects the wash water overflow in the lower portion of the bent portion 312 formed on one side of the washing water inlet pipe 310 of a predetermined diameter inserted into the upper portion of the washing tub 102 Operation control apparatus for a washing machine, characterized in that the sensor 314 is mounted. The washing control apparatus of claim 4, wherein the washing water overflow detection sensor (314) comprises a pressure sensing switch for detecting the pressure of the washing water flowing out of the washing tank (102).