KR19990016984A - Dehydration Control Method of Washing Machine - Google Patents

Abstract

The present invention relates to a method for controlling dehydration of a washing machine. In general, since a washing motor is driven during a dehydration time at a constant speed K in a normal dehydration section of a dehydration stroke, a lot of power is consumed. In consideration of such drawbacks, the present invention provides an intermittent dehydration step (S100-S103) for gradually increasing the speed of the washing motor 81 until the washing motor 81 reaches a constant speed (K); In the intermittent dehydration step (S100-S103), after the speed of the washing motor 81 is increased to the constant speed (K), the first dehydration step (S104) of repeatedly turning on / off the washing motor 81, ( S105); A second dehydration step (S106), (S107) of driving the washing motor 81 at the constant speed K until the dehydration time is completed; When the dehydration time is completed stops the power supplied to the washing motor 81 stop step (S108) to stop the washing motor (81). In the first dehydration step, the washing motor 81 is repeatedly driven on and off, and in the second dehydration step, the washing motor 81 is driven at a constant speed, thereby reducing the amount of power consumed in the dehydration operation. Make sure

Description

Dehydration Control Method of Washing Machine

The present invention relates to a method for controlling the dehydration of a washing machine, and in particular, the normal dehydration step performed after the intermittent dehydration step of the dehydration stroke is divided into first and second dehydration steps, and the washing motor is repeatedly turned on / off in the first dehydration step. In the second dewatering step, by driving the washing motor at a constant speed, the dehydration control method of the washing machine to reduce the amount of power consumed in the dehydration administration.

In general, the washing machine forms a stream of water by stirring and rotating the pulsator to the left / right in accordance with the inversion cycle of the washing motor, and the water flow thus formed impacts the laundry to perform the washing process.

Referring to FIG. 1, a washing method of a general washing machine includes a washing stroke S10, a rinsing stroke S20-S60, and a dehydrating stroke S70.

The washing stroke (S10) is a water supply step (S11) for supplying water to the tank by the water level set by the user, washing the pulsator to rotate at a low speed by rotating the pulsator left / right while varying the washing time according to the set water level and the type of laundry It consists of step S12.

When the washing stroke (S10) is finished as described above, the rinsing stroke (S20-S60) is performed, the rinsing stroke is basically performed two to three times depending on the set water level, two to three according to the user's selection A rinsing cycle can additionally be added. Accordingly, the rinsing stroke may be repeated up to five times.

Each of these rinsing strokes (S20-S60) is to drain the turbid wash water in the tank

Intermittent step (S21), the intermittent high speed rotation of the washing tank while supplying water to the washing tank

Dehydration means for removing the water of the laundry by rotating the washing tank at high speed (S22) and the dehydration step (S22)

The system (S23), the stop step (S24) for stopping the washing tank by stopping the current supply to the washing motor, the water supply step (S25) for supplying the water tank to the water level set by the user, and the pulsator

It is composed of a rinsing step (S26) to remove the bubbles or detergent residues contained in the laundry by rotating at a low speed by stirring to the left / right.

The remaining rinse stroke (S30-S60) is configured in the same manner as the rinse stroke (S20).

Dehydration stroke (S70) is performed when the rinsing stroke (S20-S60) as described above, the dehydration stroke (S70) is a drainage step (S71) for completely draining the washing water in the tank, and the washing tank intermittently high-speed rotation It consists of an intermittent dehydration step (S72) and a dehydration step (S73) for removing the water contained in the laundry by centrifugal force by rotating the washing tank at high speed.

When the dehydration operation (S70) as described above is terminated, the washing motor is stopped by cutting off the power supplied to the washing motor in step S80.

In the general washing method as described above, in the intermittent dehydration step (S22), (S72) of the rinsing stroke (S20) and the dehydration stroke (S70), the washing motor is turned on / off at a predetermined time interval. After the intermittent dehydration step (S22), (S72) is performed as described above, the washing motor is driven at a constant speed in the dehydration step (S23), (S73) of the rinsing stroke (S20) and the dehydration stroke (S70).

That is, referring to FIG. 2, the washing motor is intermittently driven by repeatedly turning on / off until reaching a constant speed K in the intermittent dehydration section. Constant speed of washing motor

When (K) is reached, the washing motor is constantly driven at the speed (K), whereby the washing tank is

It is rotated at high speed to dewater the laundry. Set dehydration time is over.

The cotton washing motor is turned off, so that the washing motor is stopped after rotating by inertia in the stop section.

In the conventional dehydration method as described above, the washing motor is fixed at the intermittent dehydration section.

The intermittent drive is turned on and off at intervals, but in the normal dewatering section, the washing motor is driven at a constant speed K until the dehydration time ends. Therefore, according to the conventional dehydration method, a disadvantage arises in that a lot of power is consumed in the dehydration stroke.

There is a need for a dehydration control method that can be performed with low power.

In order to solve the above problems, the present invention divides the normal dehydration step performed after the intermittent dehydration step into first and second dehydration steps, and drives the washing motor repeatedly on / off in the first dehydration step. In the second dehydration step, the washing motor

By driving at a constant speed, it provides a dehydration control method of a washing machine to reduce the amount of power consumed in the dehydration stroke.

The present invention for achieving the above object is an intermittent dehydration step of gradually increasing the speed of the washing motor until the washing motor reaches a constant speed in the washing process, the rinsing stroke, and the washing method comprising a dehydration stroke; In the intermittent dehydration step, the speed of the washing motor is increased to the constant speed, and the washing motor is repeatedly turned on and off.

A first dehydration step of making; A second dehydration step of driving the laundry motor at the constant speed until the dehydration time is completed; When the dehydration time is completed stops the power supply to the washing motor to stop the washing motor; characterized by consisting of.

1 is a flow chart showing a washing method of a general washing machine.

Figure 2 is a graph showing the speed of the washing motor in the conventional dehydration method.

3 is a block diagram of a laundry control apparatus applied to the present invention.

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

Figure 5 is a graph showing the speed of the washing motor in the present invention.

* Explanation of symbols for main parts of the drawings

10: control unit 20: function selection unit

30: water level setting unit 40: water level detection unit

50: weight detection unit 60: water supply valve drive unit

61: water supply valve 70: drain valve drive unit

71: drain valve 80: washing motor drive unit

81: washing motor 90: display unit

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

The laundry control apparatus to which the laundry control method according to the present invention is applied, as shown in FIG. 3, selects a desired washing function such as a control unit 10 for controlling the overall operation of the washing machine, a washing stroke, a rinsing stroke, and a dehydrating stroke. A function selection unit 20 for setting the execution time of the selected function, a water level setting unit 30 for setting the amount of water supplied to the water tank, and a water level for outputting a water level detection signal corresponding to the water level of the water tank The sensing unit 40 and a weight sensing unit 50 for sensing the weight of the laundry.

In addition, the washing control device is a water supply valve drive unit 60 for opening the water supply valve 61 under the control of the control unit 10, and drainage for opening the drain valve 71 under the control of the control unit 10. The controller 10 detects the valve driving unit 70, the washing motor driving unit 80 driving the washing motor 81 under the control of the control unit 10, and the speed RPM of the washing motor 81. RPM detection unit 82 to be applied to), and the display unit 90 for displaying the current operating state and various information of the washing machine under the control of the control unit 10.

Dehydration control method of the washing machine according to the present invention carried out by the laundry control device configured as described above, as shown in Figure 3, by opening the drain valve and repeatedly turning on / off the washing motor 81, washing motor Intermittent dehydration step (S100-S103) of gradually increasing the speed of the washing motor 81 until the 81 reaches a constant speed (K), and the washing motor 81 of the intermittent dehydration step (S100-S103) After the speed reaches the constant speed K, the first dehydration steps S104 and S105 of repeatedly turning on / off the washing motor 81 and the dehydration time of the washing motor 81 are completed. Second dehydration step (S106), (S107) for driving at the constant speed (K), and stopping the power supply to the washing motor 81 stops the washing motor 81 when the dehydration time is completed ( S108).

In addition, the intermittent dehydration step (S100-S103) is a step of determining whether the dehydration stroke is selected (S100), opening the drain valve 71 through the drain valve driver 70 (S101) and the washing motor By repeatedly increasing the speed of the washing motor 81 by repeatedly turning on / off the washing motor 81 until the 81 reaches a constant speed K, and rotating the washing tank intermittently (S102), RPM Speed of washing motor 81 detected by detector 82

Step S103 is determined to receive whether the intermittent dehydration is complete.

In addition, the first dehydration step (S104), (S105) is a step of repeatedly turning on / off the washing motor 81 after the end of the intermittent dehydration step (S100-S103) (S104), and the degree of dehydration

Determining whether the first dehydration time set according to the value is completed (S105).

All.

In addition, the second dehydration step (S106), (S107) is the step of driving the washing motor 81 at the constant speed (K) after the end of the first dehydration step (S104), (S105) and In step S107, it is determined whether the second dehydration time set according to the target value of the degree of dehydration is completed.

The accompanying drawings attached to the dehydration control method of the washing machine according to the present invention configured as described above

When described in more detail with reference to as follows.

Referring to Figure 5, the dehydration control method according to the invention washing in the dehydration administration

The motor 81 is driven by being divided into an intermittent dehydration section, a first dehydration section, a second dehydration section, and a stop section.

That is, in step S100 of the intermittent dewatering step S100-S103, the control unit 10 determines whether the dehydration stroke is selected, and in step S101, a control signal is applied to the drain valve driving unit 70 to discharge the drain valve ( Open 71).

In step S102 of the intermittent dehydration step (S100-S103), the control unit 10 supplies the washing motor 81.

The driving of the washing motor 81 is started by applying power. Subsequently, the control unit 10

The rotor 81 is repeatedly turned on and off until the washing motor 81 reaches a constant speed K.

Slowly increase the speed of the washing motor (81). Accordingly, the washing tank rotates intermittently

Intermittent dehydration.

In step S103 of the intermittent dehydration step (S100-S103), the control unit 10 goes to the RPM detecting unit 82.

Judging from the speed of the washing motor 81 is applied from, washing motor 81 at a constant speed (K)

As early as intermittent dehydration is considered complete.

When the intermittent dehydration step (S100-S103) is completed as described above, in step S104 of the first dehydration step (S104) and (S105), the control unit 10 repeatedly turns on / off the washing motor 81. In this case, the on / off time of the washing motor 81 may be set to, for example, 5 seconds turn on / 5 seconds turn off and may vary according to setting conditions.

Thus, if the washing motor 81 is turned off without driving at a constant speed (K),

During the turn-off time, the RPM drop width of the washing motor 81 is small, so that the dewatering performance is large.

Although not affected, power consumption can be reduced by the time it is turned off. That is,

In the first dehydration step (S104) and (S105), when the washing motor 81 is controlled to be turned on for 5 seconds turn on / 5 seconds, the power saving of about 11 Wh is saved, and consequently, the power consumption of the dehydration stroke is reduced by about 25%.

I can subtract it.

In step S105 of the first dehydration step (S104) and (S105), the controller 10 determines whether the first dehydration time is completed, wherein the first dehydration time is set according to the target value of the degree of dehydration.

And can be variable.

When the first dehydration step (S104), (S105) is completed, the steps of the second dehydration step (S106), (S107)

In S106, the controller 10 drives the washing motor 81 at the constant speed K. In addition

In the step S107 of the second dehydration step S106 or S107, the control unit 10 completes the second dehydration time.

In this case, the second dehydration time is set according to the target value of the degree of dehydration.

In general, the dehydration degree of the laundry is much in the dehydration time and RPM of the washing motor 81

The first and second dehydration times are the dehydration targets required by the dehydration administration.

Value divided by the total normal dehydration time, and the first and second dehydration times

Can be varied.

When the second dehydration step (S106), (S107) is completed, the control unit 10 in the stop step (S108)

The control signal is applied to the washing motor driving unit 80 to cut off the power supply to the washing motor 81.

All. Accordingly, the washing motor 81 is turned off, as shown in Figure 5, the stop section

Rotates by inertia and gradually decelerates and stops.

As described above, the general washing method drives the washing motor at a constant speed K in the normal dehydration section of the dehydration stroke until the dehydration time ends. Therefore, according to the conventional dehydration method, there is a disadvantage in that a lot of power is consumed in the dehydration stroke. In order to solve the above problems, the present invention divides the normal dehydration step performed after the intermittent dehydration step into first and second dehydration steps, and drives the washing motor repeatedly on / off in the first dehydration step. In the second dehydration step, the washing motor is driven at a constant speed, thereby reducing the amount of power consumed in the dehydration stroke.

Claims (2)

In the dehydration stroke of the washing method consisting of a washing stroke, a rinsing stroke, and a dehydration stroke, An intermittent dehydration step of gradually increasing the speed of the washing motor until the washing motor reaches a constant speed; A first dehydration step of repeatedly turning on / off the washing motor after the speed of the washing motor is increased at the constant speed in the intermittent dehydration step; A second dehydration step of driving a laundry motor at the constant speed until the dehydration time is completed; Stopping the washing motor by stopping the power supplied to the washing motor when the dehydration time is completed; Dehydration control method of a washing machine consisting of. The dewatering control method of a washing machine according to claim 1, wherein the dehydration time of the first and second dehydration steps is divided by the total normal dehydration time according to the dehydration target value required in the dehydration stroke.