KR19990073941A - How to Prevent Overflow of Washing Machine - Google Patents

Abstract

The present invention relates to a water overflow prevention method of a washing machine, and more particularly, to a water overflow prevention method of a washing machine that can prevent the leakage of water out of the outer tank of the washing machine.

The water overflow prevention method of the washing machine according to the present invention comprises the steps of detecting the amount of wash water in the washing tank, determining whether the detected amount of wash water has reached the water overflow level, and the detected wash water reaches the water overflow level When done, it comprises a step of operating the drain pump.

Description

How to Prevent Overflow of Washing Machine

The present invention relates to a water overflow prevention method of a washing machine, and more particularly, to a water overflow prevention method of a washing machine that can prevent the leakage of water out of the outer tank of the washing machine.

The washing machine is largely divided into a non-pump type washing machine as shown in FIG. 1 and a pump type washing machine as shown in FIG. The non-pumped washing machine has a structure without a separate pump for drainage. So the non-pump type washing machine is installed where the drain is located on the floor, and is a model that is widely used in Korea. In addition, the pump type washing machine is equipped with a pump for drainage, and the pump is operated at the time of drainage. Such a pump washing machine can be used when the drain is located at the top, which is a model that is used a lot in foreign countries.

Next, the drainage operation of the non-pump type washing machine and the pump type washing machine will be described with reference to FIGS. 1 and 2.

In the non-pump type washing machine as shown in FIG. 1, the outer tub 3 is configured to surround the inner tub outside the inner tub 1, and one side of the outer tub 3 is disposed outward of the outer tub 3. A drainage path 7 is formed. A passage 21 through which water flows is formed between the inner tank 1 and the outer tank 3, and the water flowing in the passage 21 opens the drain hose 9 according to the opening / closing operation of the drain valve 19. It flows through the drain 17.

When the emergency drain hole 11 is formed between the outer tank 3 and the drainage path 7 due to a drop, and the drain valve 19 is not open, the emergency drain hole 11 is connected to the drainage path 7 through the emergency drainage hole 11. Flowing water is configured to flow through the drain hose (9) to the drain (17).

In the non-pump type washing machine, in the normal drainage operation, the drain valve 19 is opened and closed so that water flowing in the passage 21 between the outer tank 3 and the inner tank 1 flows to the drain port 17. In addition, even in an emergency in which the drain valve 19 is not opened, a natural drainage is provided through the drainage path 7.

Therefore, when an abnormality occurs in the water supply valve 15 of the washing machine or an abnormality occurs in the switching element that controls the water supply valve 15, the washing water continuously supplied through the water supply valve 15 is discharged through the drain hole 11. It flows into the drainage path 7 and water is drained to the drain opening 17 connected to the said drainage path 7.

Next, the pump type washing machine shown in FIG. 2 has an outer tub 23 formed in a shape surrounding the inner tub outside the inner tub 41, and includes a passage 37 formed between the inner tub 41 and the outer tub 23. The drain hose 29 is connected to one side of the lower end. The drain hose 29 is connected to the drain hole 35 formed in the upper end. In addition, a drain valve 27 is mounted between the passage 37 and the drain hose 29, and the drain is discharged to the drain hole 35 through the drain hose 29 during the opening and closing operation of the drain valve 27. .

That is, the pump type washing machine has a shape in which the drain hose 29 stands as shown. This is because the drain hole 35 is formed at the upper end, so that the drain hose 29 is high in order to connect the drain hose 29 to the drain hole 35. Therefore, in the drainage operation, a pump (not shown) is used to pump the water and drain it to the drain hole 35. This operation is a process performed during normal drainage operation in the pump type washing machine.

In addition, the pump-type washing machine has a high drainage hose 29, so that natural drainage cannot be made through the emergency drain hole as in the non-pump type washing machine. So the washing machine itself does not have a drainage configuration.

Therefore, in the case of an emergency in which a pump type washing machine is continuously supplied with water through the water supply passage 31 in a state in which the drain valve 27 is closed, the washing water does not take place while the washing water passes outside the tub 23 outside the washing machine. Leaks into.

As described above, in the conventional washing machine, when an abnormality occurs in the water supply device, washing water leaks out of the washing machine to the outside of the washing machine, thereby causing a problem of damaging an indoor household appliance or a carpet. In addition, the conventional washing machine has a problem that the washing water leaked outside the washing machine is accumulated around the washing machine to cause a risk of electric shock to the user.

Therefore, an object of the present invention is to provide a method for preventing water overflow of a washing machine capable of preventing the washing water from leaking outside the washing machine to the outside of the washing machine.

1 is a structural diagram showing a general non-pump type washing machine,

2 is a structural diagram showing a general pump type washing machine;

3 is a hardware configuration diagram of a general automatic washing machine,

Figure 4 is an operation process for preventing water overflow of the washing machine according to the present invention.

Explanation of symbols on the main parts of the drawings

1,41: inner tide 3,23: outer tide

5,25 pulsator 7: drainage

9,29: drain hose 11: emergency drain hole

13,31: water supply passage 15,33: water supply valve

17,35: drain port 19,27: drain valve

21,37: passage 10: display portion

20: water level detection unit 30: microprocessor

40: load driving unit 50: power supply unit

60: key input unit

Water washing prevention method of the washing machine according to the present invention for achieving the above object comprises the steps of detecting the amount of wash water in the washing tank, determining whether the detected amount of wash water reaches the water overflow level, and the detected washing When the water reaches the overflow level, operating the drain pump.

The water overflow prevention method of the washing machine according to the present invention comprises the steps of determining whether the amount of the washing water detected according to the current administration to proceed, and proceeding to proceed when the set amount is reached The method further includes the step of, when the detected wash water reaches the water overflow level, characterized in that the current stroke is stopped.

Hereinafter, a method for preventing water overflow of a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a hardware configuration diagram of a general automatic washing machine. The configuration of the washing machine will be described below with reference to FIG. 2. A general automatic washing machine determines the water level in the current washing tank by receiving information from the water level detecting unit 20 and the water level detecting unit 20 for detecting the amount of wash water in the washing tank, and according to the washing process currently in progress. A microprocessor 30 for performing control, and a power supply unit 50 for supplying power to each circuit unit in the washing machine under the control of the microprocessor 30.

The automatic washing machine includes a key input unit 60 for selecting all functions necessary for washing, such as washing administration and washing time according to the user's choice, water level of the water supplied to the washing tank, an indication of the function selected by the user, and washing in progress. And a display unit 10 which performs the display according to the stroke under the control of the microprocessor 30. In addition, the automatic washing machine includes a driver 40 driven under the control of the microprocessor 30. The driving unit 40 may refer to a driving unit for driving each load provided in the automatic washing machine, and an example may include a motor driving unit.

According to the above configuration, the water level detecting unit 20 of the automatic washing machine detects the amount of the wash water supplied in the washing tank, and transmits the detected information to the microprocessor 30. The microprocessor 30 performs the control to stop the water supply when the water level required by the current administration is reached based on the information received from the water level detection unit 20.

Then, the microprocessor 30 drives the load driving unit 40 to perform washing or rinsing or dehydration in order to proceed with the washing process that is currently required.

In addition, the microprocessor 30 sets the water level in accordance with the water level to the highest level of the highest water supply and the washing water overflows out of the washing tank in order to prevent the washing water from overflowing the washing tank according to the object of the present invention. When the washing machine receives a signal indicating that the water level is reached from the water level sensor 20 in the course of any washing administration, the microprocessor 30 determines that an error has occurred in the operation of the washing machine.

Therefore, when the water overflow level is reached from the water level detection unit 20, the microprocessor 30 recognizes that the abnormal water level has been reached due to the abnormal water supply in an abnormal state different from the one intended by the water level detection unit 20, and displays an error on the display unit 10. A buzzing sound is displayed or continuously to notify the user of an error in the washing administration. The washing operation such as washing, rinsing, and dehydration currently in progress is stopped, and emergency measures for operating the drainage pump are taken to prevent the washing water from overflowing the washing tank.

Next will be described in more detail with reference to the accompanying drawings the operation of the water overflow prevention according to the abnormal water supply during the laundry administration in the automatic washing machine having the configuration as described above.

4 is an operation process diagram for preventing the overflow of the washing machine according to the present invention.

First, the user selects a desired washing administration through the key input unit 60. At this time, the washing administration selected may be a washing ⇒ rinsing ⇒ dehydration administration by the standard washing administration, or may be a washing administration by selecting only a specific stroke. In addition, the amount of water required in the course of each washing administration, or the running time may be selected through the key input unit 60.

In this way, the signal selected from the key input unit 60 is input to the microprocessor 30 to recognize the washing administration condition required by the user, and then the microprocessor 30 advances the washing administration according to the recognized condition.

On the other hand, in order to prevent the washing water from overflowing the washing tub according to the object of the present invention, the microprocessor 30 sets the water level of the high water supplying the highest water supply and the washing water level according to the washing water overflowing the washing tub.

The microprocessor 30 determines whether the amount of water supplied to the washing tank reaches the overflow level, regardless of whether the washing machine is currently operating or stopped. However, when the washing machine is in operation, it is necessary to determine whether the water level is reached in the course of each washing administration. First, the microprocessor 30 determines whether the washing machine is in operation 101.

In step 101, when the washing machine is in the stopped state, step 117 is immediately performed according to whether the water level in the current washing tank reaches the overflow level without determining the progress of the washing process. Whether the water overflow level is reached in step 117 is detected by the water level detecting unit 20 in the current amount of water in the washing tank, and it is determined based on the detected signal.

When the amount of water currently in the washing tank reaches the water overflow level in step 117, the microprocessor 30 displays an error according to the abnormal water level detection on the display unit 10 and simultaneously buzzes a buzzer sounding an abnormal condition. The microprocessor 30 stops the water supply stroke for supplying water into the washing tank and drives the load driver 40 to turn off the operation of a load such as a motor. In operation 119, a drain pump for drainage operation is forcibly driven.

The washing water flowing in the passage 37 between the inner tank 41 and the outer tank 23 by the operation of the drain pump in step 119 is pumped through the drain hose 29 and drained to the drain hole 35.

In step 117, when the current water level in the washing tank does not reach the overflow level, the routine is repeated to detect the water level in the washing tank, and the overflow of the water out of the washing tank is monitored.

When the washing machine is in the operating state at step 101, it is determined at step 103 whether the current stroke is a washing or rinsing stroke. If the current stroke is not a washing or rinsing stroke in step 103, the microprocessor 30 recognizes the dehydration stroke.

In the step 103, the washing or rinsing stroke is determined separately from the dehydrating stroke. In the washing or rinsing stroke, it is determined whether the set water level is reached as the water supply process proceeds, and when the set water level is reached, the washing or rinsing stroke is rotated by rotating the motor. Proceed. On the contrary, in the dehydration administration, it is determined whether the water level in the washing tank has reached the zero level, and when the water level is reached, the dehydration operation is performed.

Therefore, when the current administration is in the washing or rinsing cycle in step 103, it is determined whether the water level in the washing tank reaches the set level in step 105. Then, the water supply is continued until the set water level is reached (step 111). When the water level is reached, in the washing stroke, the microprocessor 30 drives the load driving part 40 to perform the washing stroke, and in the rinsing stroke, the rinsing stroke. (Step 109).

In addition, in the case where the administration in progress in step 103 is the dehydration stroke, in step 107, it is determined whether the water level in the washing tank reaches the zero level. Then, the water in the washing tank is completely drained to the drain 35 through the drain hose 29 until the water level reaches zero (step 115), and when the water in the washing tank is limited to a predetermined level, the microprocessor 30 load-drives the unit. 40 is driven to perform dehydration (step 113).

As described above, during the normal operation of the washing machine, the water level detecting unit 20 continuously monitors whether the amount of water supplied in the washing tank has reached the set water overflow level (step 117).

Although step 117 is described above, the washing machine is always monitored whether the washing machine is operating or stopped. Therefore, when the washing machine is in operation, when the current ongoing stroke reaches the set water level required by each stroke in the washing or water supply stroke, the current ongoing stroke is executed. Thereafter, the water level of the washing tank is continuously monitored, and when a signal for reaching the overflow level from the water level detection unit 20 is input to the microprocessor 30, the microprocessor 30 controls the operation according to step 119. To force drainage.

That is, when a signal indicating that the water overflow level is reached from the water level detection unit 20 during the operation of the washing machine in step 117 is input, the microprocessor 30 may be abnormal in an abnormal state different from that intended. Judging from the water supply. Therefore, the microprocessor 30 turns on the light emitting element of the error display indicating that the abnormal level has been reached on the display unit 10 and simultaneously generates a buzzer sound to notify the user of an error in the washing stroke.

In addition, the microprocessor 30 controls the washing water not to overflow the washing tank by stopping the stroke of water supply or washing, rinsing, dehydration, and taking emergency measures to operate the drainage pump.

Therefore, in the pump type washing machine that drives the drain pump to drain, the water level is set to the level of the washing water overflowing the washing tank, and when the washing water in the washing tank reaches the water overflow level during any operation process, the washing pump is forced to drive the washing water. Draining the water prevents it from overflowing the tub.

As described above, the present invention senses the amount of wash water in the washing tank from the water level detection unit, and when the water level is reached, the washing or rinsing is performed while stopping the water supply, or when the drainage operation receives the information from the water level sensor indicating that the wash water is completely drained. By setting up the water overflow level in the fully automatic washing machine which proceeds to the following specific administration, and taking emergency measures to stop the current washing administration and operate the drainage pump when the washing water in the washing tank reaches the water overflow level in any operation process. There is an advantage that can damage the indoor appliances or carpets, or prevent the occurrence of electric shock due to leakage.

Claims (4)

Sensing the amount of wash water in the wash tub; Determining whether the sensed amount of wash water has reached a water overflow level; When the detected washing water reaches the overflow level, operating the drainage pump. The method of claim 1, Determining whether the detected amount of wash water has reached a set amount according to the current administration; Further comprising the step of advancing the administration to proceed when the set amount is reached, When the detected washing water reaches the water overflow level, the water overflow prevention method of the washing machine, characterized in that to stop the current process. The method according to claim 1 or 2, When the detected washing water reaches the water overflow level, the water overflow prevention method of the washing machine, characterized in that for generating an alarm sound. The method of claim 3, wherein When the detected washing water reaches the water overflow level, the water overflow prevention method of the washing machine, characterized in that to display the occurrence of an error.