KR100304874B1 - method for control dehydration cycle - Google Patents

Abstract

PURPOSE: A controlling method of a dehydrating stroke on a laundry machine is provided which is characterized by maximizing dehydrating efficiency and reducing the quantity of electricity consumed by using a motor on/off pattern. CONSTITUTION: The controlling method of the dehydrating stroke on the laundry machine is as follows: detecting pulse number first with a detecting sensor of textile quantity to sense textile quantity, and setting up water level; feeding washing-water as water level reduced proper quantity compared with set up water level; rotating a laundry motor, and remeasuring pulse number with the detecting sensor of textile quantity; calculating a difference of the pulse number detected first and the pulse number remeasured; estimating a kind of textile in accordance with the difference, and determining a dehydrating pattern suited to the kind of textile; increasing dehydrating velocity, and processing first intermittent dehydration; main-dehydrating; and processing second intermittent dehydration.

Description

Method for control dehydration cycle of washing machine

The present invention relates to a washing machine, and more particularly, to a dehydrating stroke control method of a washing machine.

In general, a washing machine is a device for washing laundry by washing, rinsing, and dehydrating according to a predetermined algorithm corresponding to a user's operation command. Particularly, a washing machine uses centrifugal force to wash the remaining moisture of a laundry in a washing tank during dehydration. The washing tank is rotated at a high speed according to a predetermined driving pattern to separate it from the furnace and discharge it out of the washing machine.

As shown in FIG. 1, a general configuration of a washing machine includes a key signal input unit 1 for inputting various washing-related commands such as a washing mode, a water level detecting unit 2 for detecting a level of washing water, and a control signal. Operation of the water supply valve driving unit 3 for driving the water supply valve, the drain valve driving unit 4 for driving the drain valve according to the control signal, the motor driving unit 5 for driving the washing motor according to the control signal, and the washing machine The washing unit 6 detects the water level of the washing water through the display unit 6 for displaying a state or an error occurrence, the water level detecting unit 2, and performs the washing operation corresponding to the user's operation command input through the key signal input unit 1. It comprises a control unit 7 for outputting a control signal to the water supply valve drive unit 3, the drain valve drive unit 4 and the motor drive unit 5 to perform.

Referring to Figure 2 of the washing operation control method of the washing machine configured as described above, when the user's washing instruction and washing mode is input, the control unit 7 detects the amount of laundry in the washing tank (S11).

Subsequently, the water supply is performed by applying a control signal to the water supply valve driving unit 3 so that the water supply is performed by the set water level corresponding to the detected amount of water, and then washing is performed (S12).

When the washing is completed, the drain signal is applied to the drain valve driver 4 to perform drainage, and when the drainage is completed, that is, the motor driving unit is configured to be turned on / off according to the motor driving pattern shown in FIG. Intermittent dehydration is performed by applying a control signal to 5) (S14).

Subsequently, when the intermittent dehydration is completed, the motor is continuously turned on for the set time to perform this dehydration (S15).

Then, the water supply and rinsing stroke is performed (S16), the drainage is performed (S17), and the final dehydration is performed (S18).

At this time, the final dehydration (S18) is made by performing the intermittent dehydration (S14) and the main dehydration (S15).

The washing machine according to the prior art performs dehydration by rotating the motor at a constant rotation speed regardless of the amount and type of laundry cloth, so that a certain amount of dehydration performance can not be increased after a certain period of time. There is a problem that causes damage.

Accordingly, an object of the present invention is to provide a method for controlling the dehydration operation of a washing machine, which is designed to solve the above-mentioned problems and to reduce the amount of electricity consumption while maintaining the dehydration performance to the maximum.

1 is a block diagram showing the configuration of a typical washing machine

Figure 2 is a flow chart showing a dewatering stroke control method of a washing machine according to the prior art

Figure 3 is a graph showing the relationship between the motor drive pattern and the number of revolutions when dewatering the washing machine according to the prior art

Figure 4 is a flow chart showing a dehydrating stroke control method of the washing machine according to the present invention

5 is a graph showing the relationship between the number of pulses and the quality of the washing machine according to the present invention

Figure 6 is a graph showing the relationship between the motor drive pattern and the number of revolutions when dewatering the washing machine according to the present invention

Explanation of symbols for main parts of the drawings

1: key signal input unit 2: water level detection unit

3: water supply valve driving unit 4: drain valve driving unit

5: motor drive part 6: display part

7: control unit

The present invention is a washing machine for detecting the quantity according to the number of pulses generated by the quantity sensor corresponding to the rotation of the washing motor, detecting the quantity of the first pulse through the quantity sensor to detect the amount of water and set the water level accordingly Step, water supplying the washing water by a certain level reduced compared to the set water level and detecting the second by the number of pulses, detecting the quality of the water, washing and draining water to the set water level, corresponding to the water level and the quality It characterized in that it comprises a step of performing the dehydration in accordance with the set time and on / open pattern.

Hereinafter, with reference to the accompanying drawings illustrating a dehydrating stroke control method of the washing machine according to the present invention.

4 is a flowchart illustrating a method for controlling a dehydration stroke of a washing machine according to the present invention, FIG. 5 is a graph showing the relationship between the number of pulses and the quality of the washing machine according to the present invention, and FIG. 6 is a motor during dehydration of the washing machine according to the present invention. A graph showing the relationship between the driving pattern and the rotation speed.

In the method for controlling dehydration according to the present invention, as shown in FIG. 4, when a user's washing instruction and washing mode are input, the control unit 7 detects the quantity of laundry in the washing machine and sets the corresponding water level (S21). ).

At this time, the quantity detection is performed by detecting the number of pulses (primary pulse number) generated by the quantity detection sensor (not shown) which operates according to the left / right stirring of the washing tank for a predetermined time without performing water supply in the washing tank. Pulse count and quantity are inversely proportional.

Subsequently, it is determined whether the current level is a set level of 1 level, that is, a level 1 level lower than the set level in order to 'on' the water supply valve so that the washing water can be supplied as much as the set level. ).

When the current level is the set level-1, the determination result (S23) indicates that the water supply valve is 'off' Chicago (S24), and the second pulse number is detected to detect 'ΔP', which is the difference between the second pulse number and the first pulse number. And according to the number of first pulse as shown in Table 1 to detect the form (S25).

At this time, Figure 5 is a graph shown in Table 1, referring to Figure 5, for example, if the number of primary detection pulse is 35, regardless of 'ΔP' is determined as thick clothing, the primary detection pulse number is 43 and 'ΔP If the value is 30, the normal clothing is also determined. If the number of primary detection pulses is 52, the clothing is judged to be thin regardless of 'ΔP'.

Subsequently, when the material detection (S25) is completed, water is supplied to the set water level (S26) and washing is performed (S27).

And when the washing is completed by performing the drainage (S28), enters the dehydration stroke, the present invention consists of the first intermittent dehydration, the main dehydration and the second intermittent dehydration unlike the prior art.

In this case, the second intermittent dehydration is not performed, but is performed using the last part of the existing main dehydration time.

First, the first intermittent dehydration is performed for a predetermined time (S29), and the main dehydration and the second intermittent dehydration are performed. The second intermittent dehydration time and the ON / OFF pattern proceed differently.

For example, if the water level is 'used' and thick clothing, the shower water supply is performed after the first intermittent dehydration and the motor keeps 'on' for 7 minutes and the main dehydration proceeds, followed by 5 seconds ON for 3 minutes. The second intermittent dehydration proceeds by repeating the / 5 second OFF to complete the total dehydration stroke.

As another example, if the water level is 'medium' and normal clothing, the water is kept in the 'on' state for 5 minutes after the first intermittent dehydration and the shower water supply is performed, followed by the main dehydration, followed by the second intermittent dehydration for 1 minute. Dehydration is performed by repeating 3 sec. ON / 3 sec.

In another example, when the water level is 'low' and thin clothing, the motor keeps 'on' for 3 minutes after the first intermittent dehydration and the shower water is supplied, and the main dehydration proceeds, followed by the second intermittent dehydration. Dehydration is performed by repeating 1 second ON / 1 second OFF for a second.

At this time, as shown in Figure 6, even if the dehydration and the second intermittent dehydration in sequence according to the time and the ON / OFF pattern corresponding to Table 2, the state in which the motor speed is maintained above a certain level by the main dehydration Therefore, the motor speed can be seen that there is no big change.

Subsequently, when dehydration is completed, water supply and rinsing are performed (S32), and then draining is performed (S33).

When the drainage is completed, the final dehydration is performed in the same manner as the first intermittent dewatering, the main dehydration and the second intermittent dehydration (S34), and the washing operation is completed.

Dehydration administration control method of the washing machine according to the present invention prevents damage to the laundry by performing a high rotation hepatic dehydration at low power by using the residual rotational power according to the main dehydration in the motor on / off pattern set according to the amount and quality of the laundry cloth At the same time, there is an effect that can improve the dehydration performance and reduce the power consumption.

Claims (3)

In the washing machine that detects the quantity according to the number of pulses generated by the quantity sensor corresponding to the rotation of the washing motor, Detecting the quantity of pulses by first detecting the number of pulses through the quantity detecting sensor, and setting the water level accordingly; Supplying the washing water by a level reduced by a predetermined level compared to the set level, Supplying the washing water and rotating the washing motor to re-measure the number of pulses generated by the quantity detecting sensor; Calculating a difference between the number of first detected pulses and the number of pulses measured again; Determining a material according to the difference in the number of pulses and determining a dehydration pattern according to the material; The first intermittent dehydration is performed to increase the dehydration speed through the acceleration / deceleration repetition so as to correspond to the dehydration pattern. When the first intermittent dehydration speed reaches a certain level, the main dehydration is performed. The dehydration control method of the washing machine comprising the step of performing a second dehydration to repeat the acceleration / deceleration while maintaining the main dewatering speed. The method of claim 1, Determination control method of the washing machine, characterized in that the main dehydration time is longer than the thin laundry cloth, if it is determined as a thick laundry cloth. The method of claim 1, Dehydration control method of the washing machine, characterized in that the acceleration / deceleration of the speed is made by the motor on / off time control.