KR20080076313A - Control method of washing machine - Google Patents

Abstract

A method for controlling a washing machine is provided to allow a user to pick up the clothes from a tub completely by sensing weight of the clothes and displaying the amount of the clothes on a display. A method for controlling a washing machine comprises the steps: judging whether a door is opened(S110); judging whether the door is closed if the door is opened(S120); sensing weight of clothes if the door is closed(S130); and comparing the sensed weight of clothes with a set weight, displaying the amount of the clothes on the basis of the result(S150).

Description

Control Method of Washing Machine {CONTROL METHOD OF WASHING MACHINE}

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

2 is a control block diagram of a washing machine according to the present invention.

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

* Description of symbols on the main parts of the drawings *

10: main body 11: tank

12: rotating drum 15: motor

16: heater 17b: door

17c: door switch 19b: drain valve

22: water supply valve 32: door opening and closing detection unit

33: quantity detection unit 34: control unit

35 drive unit 36 display unit

The present invention relates to a control method of a washing machine, and more particularly, to a control method of a washing machine that detects when laundry remaining in the washing machine remains in the rotating drum of the washing machine and informs the user to identify it.

In general, a washing machine (typically, a drum washing machine) is a device that allows washing to be performed by a force that pulls up and washes laundry inside thereof when the cylindrical rotating drum rotates, and is compared with a conventional pulsator type washing machine. The washing time is long, but the demand is increasing due to less damage to the fabric and less water consumption.

The washing machine supplies water to the inside of the tank for washing and rinsing, and after washing and rinsing, the washing process includes washing, rinsing, and dehydration through a series of water supply or draining operations for draining the water inside the tank. .

In the conventional washing machine, after the end of the laundry administration, the user takes out the laundry from the rotating drum. In the case of the drum washing machine, the inside of the rotating drum is dark and the space is wide so that the user rotates a part of the laundry washed in the process of taking out the laundry. A situation may arise in which the withdrawal process of the laundry can be terminated while remaining in the drum.

For this reason, if the remaining amount of laundry that is not dried remains in the rotating drum, there is a problem that the fabric is damaged or a bad smell occurs after a long period of time.

The present invention is to solve such a problem, an object of the present invention is to control the washing machine that can inform the user when the remaining amount of laundry remaining by detecting the weight of the laundry remaining in the laundry after taking out the laundry after washing It provides a way.

The present invention for achieving the above object comprises the steps of determining whether the door is opened; Determining whether the door is closed if the door is opened; Detecting a quantity of laundry if the door is closed in determining whether the door is closed; And comparing the detected amount of quantity with a set value and displaying whether there is a residual amount of laundry according to the comparison result.

The determining of whether the door is opened may include determining whether the washing administration is finished, and determining whether the door is opened when the washing administration is finished.

In addition, the step of detecting the quantity of the laundry is characterized in that using a weight sensor.

The displaying of the remaining amount of laundry may include determining that the laundry remains when the detected amount of water exceeds the set value.

In addition, when it is determined that the laundry remains, characterized in that for outputting an alarm signal.

And, the step of determining whether the withdrawal of the laundry of the present invention viewed from the other side is finished; Detecting a quantity of laundry when it is determined that the laundry is withdrawn; And comparing the detected amount of quantity with a set value and displaying whether the amount of laundry remains.

In addition, the step of determining whether the laundry is withdrawn is the step of determining whether the laundry administration is finished, the step of determining whether the door is opened when the laundry administration is finished, and if the door is opened Determining whether it is closed.

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

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

The washing machine according to the present invention has a main body 10 forming an external appearance as shown in FIG. 1, a drum-type water tank 11 installed in the main body 10 for fresh water of wash water, and a water tank ( 11) is rotatably installed in the interior includes a rotating drum 12 for washing the laundry.

The water tank 11 is installed so as to incline a predetermined angle α with respect to the installation surface of the washing machine as a whole so that the front portion 11a on which the inlet 11b is formed is higher than the rear portion 11c, and the inside of the water tank 11 Rotating drum 12 is installed in the inclined shape so that the front portion 12a formed in the inlet 12b in the same form as the water tank 11 is higher than the rear portion 12c.

That is, the rotating drum 12 is installed such that the front portion 12a on which the inlet 12b is formed faces the front upper portion so that the center of rotation line “A” is inclined at an angle with respect to the installation surface of the washing machine. do. At this time, the rotating drum 12 is rotatably supported in the center of the rear surface of the water tank 11 by the rotation shaft 13 coupled to the center of the rear portion 12c to be rotatable inside the water tank 11.

In addition, a plurality of through holes 12d are formed around the rotating drum 12, and a plurality of lifters are formed on the inner surface of the rotating drum 12 to allow the laundry to rise and fall when the rotating drum 12 rotates. 14) is installed.

Outside the rear part 11c of the water tank 11, a motor 15 is installed as a driving device for rotating the rotating shaft 13 connected to the rotating drum 12 to perform washing, rinsing and dehydrating operations. The lower side of the washing heater 16 for heating the wash water supplied into the water tank 11 is installed.

The motor 15 includes a stator 15a fixed to the rear portion 11c of the water tank 11, a rotor 15b disposed in a rotatable state outside the stator 15a, and a rotor 15b and a rotating shaft. It consists of the rotation board 15c which connects 13.

In addition, the front panel 17 is provided on the front of the main body 10, the inlet 12b of the rotating drum 12 to put the laundry into the inside of the rotating drum 12 or to take out the laundry inside the rotary panel 12 And an inlet 17a open at a position corresponding to the inlet 11b of the water tank 11, and a door 17b rotatably hinged to open and close the inlet 17a on one side of the inlet 17a. ) Is installed. In addition, a door switch 17c protruding from the front of the front panel 17 is provided at the upper portion of the inlet 17a to detect the opening and closing of the door 17b to control the operation of the washing machine.

A detergent supply device 18 for supplying detergent and a water supply device 20 for supplying washing water are installed at an upper portion of the water tank 11, and water in the water tank 11 is disposed at a lower portion of the water tank 11. A drainage device 19 for draining is provided.

Detergent supply device 18 is divided into a plurality of spaces inside, it is installed on the front side of the main body 10 to facilitate the user to put detergent and softener in each space.

The water supply device 20 includes a water supply pipe 21 for supplying water toward the water tank 11 and a water supply valve 22 installed in the water supply pipe 21 to control the water supply by opening and closing the flow path of the water supply pipe 21. At this time, the water supply pipe 21 is connected to the detergent supply device 18 so that water supplied from the outside can be supplied toward the detergent supply device 18. And a separate connecting pipe 23 is installed between the detergent supply device 18 and the water tank 11 so that water passing through the detergent supply device 18 can be supplied to the water tank 11, and A water supply nozzle 24 is installed at the outlet. This allows the water supplied into the water tank 11 to pass through the detergent supply device 18 so that the detergent in the detergent supply device 18 can be supplied to the water tank 11 in a state in which the detergent is dissolved in water.

The drainage device 19 includes a drain pipe 19a, one end of which is in communication with the water tank 11 and the other end extending outward, and a drain valve 19b provided in the middle of the drain pipe 19a to open and close the drain pipe 19a. When the drain valve 19b is opened, the water in the water tank 11 is naturally drained.

2 is a control configuration diagram of a washing machine according to the present invention, in addition to the apparatus shown in FIG. 1, the power supply unit 30, the signal input unit 31, the door opening and closing detection unit 32, the quantity detection unit 33, and the control unit 34. ), The driving unit 35 and the display unit 36.

The power supply unit 30 supplies power to operate the washing machine, and the signal input unit 31 controls the washing course selected by the user according to the material of the laundry and operation information such as washing temperature, dehydration rpm, and rinsing addition. ).

The door opening / closing detection unit 32 is provided on the front panel 17 and includes a door switch 17c for detecting the opening and closing of the door 17b.

The quantity detecting unit 33 is for detecting the amount of laundry put into the rotating drum 12 or after the end of the washing administration. The method for detecting the quantity of the laundry is a current value sensed due to torque generated when the motor rotates. Various methods of detecting a conventionally used amount may be used, such as a method of using, a method of using a weight sensor, a method of using an optical sensor, or an method of using an infrared sensor.

The control unit 34 is a microcomputer that controls the washing machine according to the operation information input from the signal input unit 31. The control unit 34 determines whether a series of washing operations such as washing, rinsing, and dehydration is finished, and if so, opens the door 17b. After the opening, it is determined whether it is closed again, and when it is closed, the amount of load is detected to detect whether there is residual laundry in the rotating drum 12. At this time, if the detected amount is more than a predetermined value (a certain value that can be determined that the remaining laundry is present) is determined that the remaining laundry not removed by the user in the rotating drum 12 to alarm the user to inform the remaining laundry laundry Output

In addition, the control unit 34 has a built-in timer for counting the opening time when the door 17b is opened, and the opening time is smaller than a predetermined time (the minimum time required to take out laundry after the user normally opens the door). If it is above, it is determined whether the door 17b is closed. If the opening time is smaller than the predetermined time, it is determined that the door 17b is opened again because it is determined that the user has not completed the withdrawal of the laundry. Done. The control unit 34 also stores data such as the predetermined value and the predetermined time in a ROM table and stores the data in advance.

The driving unit 35 drives the water supply valve 22, the drain valve 19b, the motor 15, and the heater 16 according to the drive control signal of the controller 34.

The display unit 36 displays an operating state of the washing machine, an error signal, and the like according to the control signal of the controller 34, and outputs an alarm signal when the laundry remains on the rotating drum 12.

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

Put the laundry inside the rotating drum 12, and when the consumer selects the driving information, such as washing course, washing temperature, dehydration rpm, rinse addition, depending on the material of the laundry, the operation information selected by the consumer through the signal input unit 31 It is input to the control part 34.

Therefore, when the control unit 34 applies a signal to the driving unit 35 for washing and rinsing according to the operation information input from the signal input unit 31, the water supply valve 22 opens and water (washing water or rinsing water) is supplied to the water supply pipe. After passing through the detergent supply device (18) (21) through the connecting pipe 23 again through the water supply nozzle 24 is supplied to the water tank 11 to perform the washing and rinsing.

After washing and rinsing, the drain valve 19b is opened in response to a signal from the driving unit 35, and the water (washing water or rinsing water) inside the water tank 11 is drained through the drain pipe 19a, and then final dehydration is performed. Will be performed.

Rinsing and dehydration process may be repeated a plurality of times according to the user's setting.

The washing administration is performed including the series of washing, rinsing, and dehydration processes, and then it is determined whether the washing administration is finished (S100). When it is determined that the washing administration is finished, the door opening / closing detection unit 32 detects from the door switch 17c whether the user opens the door 17b for taking out the laundry of the kind which is kind of washing. In operation S110, when the door 17b is determined to be open, the door open / close detection unit 32 determines whether the door 17b is closed (S120).

At this time, the user sets a predetermined time smaller than the minimum time required to take out the laundry to count whether the door 17b is opened for a predetermined time or more, and if the door 17b is opened for a predetermined time or longer, it is determined whether the door 17b is closed. This is to prevent the laundry residual alarm signal not intended by the user from being output when the door 17b is opened or closed for reasons other than the withdrawal of the laundry.

When it is determined that the door 17b is closed in this way, that is, when it is determined that the withdrawal of the laundry is completed including the above-described steps, the quantity detecting unit 33 detects the quantity of water in the rotating drum 12 (S130). In operation S140, when the weight of the detected quantity is determined to be greater than or equal to a predetermined value, when the detected quantity is greater than or equal to a predetermined value, it is determined that the laundry remains in the rotating drum 12, and the laundry remains through the display unit 36. Outputs an alarm signal informing (S150), and ends the control operation for the detection of residual laundry in the washing machine.

As described above, after the laundry is taken out, the weight of the laundry remaining in the washing tank is sensed and the user is notified of the remaining laundry, and the user is ventilated around the user so that the laundry can be completely withdrawn. Therefore, there is an effect that can prevent the problem that the laundry is damaged or bad smell occurs in advance.

Claims (8)

Determining whether the door is opened; Determining whether the door is closed if the door is opened; Detecting a quantity of laundry if the door is closed in determining whether the door is closed; And comparing the detected amount of quantity with a set value and displaying whether there is a residual amount of laundry according to a comparison result. The control method according to claim 1, wherein the determining of whether the door is opened comprises determining whether the washing administration is finished and determining whether the door is opened when the washing administration is finished. The control method according to claim 1, wherein the displaying of the remaining amount of laundry further comprises determining that the laundry remains when the detected amount is more than the set value. 4. The control method according to claim 3, wherein an alarm signal is output when it is determined that the laundry remains. Determining whether the withdrawal of the laundry is finished; Detecting a quantity of laundry when it is determined that the laundry is withdrawn; And comparing the detected amount of quantity with a set value and displaying whether the laundry amount remains according to a comparison result. The method of claim 5, wherein the determining of whether the laundry has been withdrawn comprises determining whether the laundry administration has ended, determining whether the door is opened when the laundry administration is ended, and opening the door. If it is determined that the door is closed control method of the washing machine. The control method according to claim 5, wherein the displaying of the remaining amount of laundry further comprises determining that the laundry remains when the detected amount is more than the set value. The control method according to claim 7, wherein an alarm signal is output when it is determined that the laundry remains.

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