KR960006395B1 - Washing method of drum washing machine by fiber quantity detecting - Google Patents

Abstract

A washing method of a drum washing machine by clothing quantity sensing includes the steps of: examining whether water in a tub reaches its normal level; checking whether the water level is lowered to water re-supply level after washing in a specific time; counting the times of water re-supplying; and deciding the quantity of the clothing according to the times of water re-supplying.

Description

Washing Method by Detecting Capacity of Drum Washing Machine

1 is a structural diagram of a general drum washing machine

2 is a water level reduction state after drum rotation in accordance with FIG.

3 is a characteristic diagram of water absorption and water level change according to the amount of water in FIG. 1, (a) is a water absorption characteristic of the cloth according to the amount of water, and (b) is a characteristic of water level change according to the amount of water.

4 is a quantity detection control circuit of the drum washing machine of the present invention.

5 is an explanatory diagram for level control in the present invention.

6 is a characteristic of the occurrence of recirculation frequency according to the quantity in the present invention.

7 is a table for setting the number of times of refilling, washing time and rinsing water level according to the amount of water in the present invention.

8 is a signal flow diagram of a washing method by detecting the amount of washing of the drum washing machine of the present invention.

* Explanation of symbols for main parts of the drawings

1: drum washing machine 2: washing tank

3: power switch 4: detergent container

5: water supply valve 6: pressure sensor

7: drain hose 8: drain hole

9: washing motor 10: drainage pump

12: power switch 13: microcomputer

14: load driving unit 15: key input unit

16 display unit 17 water level detection unit

The present invention relates to a drum washing machine, and in particular, when the water level is lowered from the standard water level to a certain level or less by using the proportion of the amount of laundry cloth and the amount of the laundry cloth, the water generated is finally generated to be resupplied to the standard water level again. The present invention relates to a washing method by detecting the amount of washing of a drum washing machine, which can produce an optimal washing effect by checking whether the amount of washing is small or large and then washing the water.

In the conventional pulsator type washing machine, a magnet is attached to the clutch pulley and a sensing coil is configured to detect this, and if the counter electromotive force occurs due to the inertia rotation of the washing tank when the power is turned off after the motor is started, the number of remaining pulses is counted by the counter electromotive force. I'm using a sensing method.

However, the conventional drum washing machine cannot detect the amount of laundry, so if the amount of laundry is small, a regular washing program can be performed regardless of the amount of laundry, or if a small amount of laundry is installed on the operation unit, the consumer directly presses the small amount button before starting washing. Since it is not possible to wash the laundry suitable for the amount of other quantity or the quantity is not automatically detected, a small amount of button must be configured on the operation unit, and there is an inconvenience that the consumer has to operate the button directly.

Therefore, in order to solve the conventional problems, the present invention is to subdivided and detect the amount from the minimum amount to a large amount in the drum washing machine, and the re-water supply when the water level is lowered from the standard water level to a constant water supply level below the predetermined water level according to the water absorption amount absorbed by the laundry cloth After supplying water, check the number of refills that occurred lastly, and determine whether the amount of washing is a small amount or a large amount of washing from the checked number of times of refilling, so that the washing time is shortened and the rinsing water level is reduced. To save time and water, and when a large amount of laundry is automatically extended washing time and to increase the rinsing water level to provide a washing method by detecting the amount of drum washing machine to obtain a certain washing effect and rinsing effect.

The method of the present invention for achieving the above object, as shown in Figure 8, the first step of checking whether the water level supplied to the washing tank after the start of the washing administration reached the reference level; A second step of checking whether the water position is lowered to the water supply level after washing for a predetermined time when the reference water level is reached in the first step; A third step of repeating a process of washing water for a predetermined time and checking the water level again after the water supply is re-supplied to the reference water level when the water supply level is lowered in the second step; In the second step, when the water level is not lowered to the level of refilling, or in the third step, a washing step is performed by determining the amount of cloth according to the number of times of refilling.

The structure of the drum washing machine for performing the method consisting of each step, as shown in Figure 1, the detergent container (4) for introducing the detergent into the washing tank (2) with the water flowing through the water supply valve (5) And, as the water flows into the washing tank 2, the pressure sensor 6 for detecting the water level with the pressure transmitted through the drain hose 7 to be formed in the drain 8, and the pressure sensor 6 When the level detected by the water level reaches the reference level is composed of a drum (3) to rotate and wash according to the composition of the washing motor (9),

4 is a capacity control circuit diagram of the drum washing machine according to the present invention. As shown therein, a power switch 12 for supplying power by turning on and off the drum washing machine to operate and the entire system according to various control signals applied thereto are shown. The microcomputer 13 for controlling the operation, the water level sensing unit 17 for detecting the amount of water flowing into the washing tank 2 and delivering it to the microcomputer 13, and the control operation of the microcomputer 13 According to the display unit 16 showing the washing state, the key input unit 15 to allow the user to select various functions required for washing, and the washing motor 9, the drain according to the control output of the microcomputer 13 It consists of a load driving unit 14 to drive the pump 10 and the male valve (5) to enable washing.

Referring to the operation and effect of the present invention configured as described in detail as follows.

The user puts the laundry into the washing tank (2) to put the laundry into the detergent container (4), and then press the power switch 12 of FIG. 4 to supply the power to the microcomputer 13 to the key input unit 15 When the display 16 is used to select a function necessary for washing, water entering the detergent container 4 through the water supply valve 5 shown in FIG. 1 is washed with the detergent in the detergent container 4. (2) It flows into.

As water enters the washing tank 2, an input is transmitted to the pressure sensor 6 through a hose 7 formed in the drain port 8, and senses the water level and is transmitted to the microcomputer 13. In this way, the delivered water level is sensed and transferred to the microcomputer 13. When the level detection signal transmitted in this way reaches the reference level, the washing motor 9 is driven by the load driving unit 14 under the control of the microcomputer 13 to rotate the drum 3 so as to perform constant washing.

Then, the water level decreases according to the amount of water by absorbing the water of the carriage when the drum 3 rotates, and when the water supply is completed to the reference water level Hl as shown in FIG. 2A, the microcomputer 13 To stop the water supply by turning off the water supply valve (5) and to turn on the washing motor (9) to wash by the rotation of the drum (3).

When the drum 3 is rotated and the laundry in the washing tank 2 is stirred in the water, the laundry absorbs the water and starts to soak the laundry. When the laundry is a small amount as shown in FIG. There is less volume of laundry out of the water, and when the laundry is large, as shown in (d) of FIG. 2, the volume of the laundry out of the water is also large.

However, since the laundry is soaked by the drum rotation to absorb the water in the washing tank 2, the water level is lowered by the amount of water contained in the laundry outside the water surface. That is, in the case of a small amount of laundry as shown in (b) of FIG. 2, since the volume of the laundry coming out of the water surface is small, the water level becomes a level h2 slightly lowered from the reference level h1.

If the amount of laundry is a little more, as shown in (c) of FIG. 2, the reference level (hl) will be lowered to the level of h3.If there is a lot of laundry, as in (d) of FIG. 2, the original reference level ( As h1) absorbs water as the laundry is wet, the water level is gradually lowered, so that the water level can be lowered below the bottom of the washing tank by absorbing all the water in the h4 water level or the washing tank 2.

As described above, the more cloth after the start of rotation of the drum (3) by the washing motor (9), the water absorption of the cloth increases proportionally as shown in (a) of FIG. 3, and the more cloth, the water level in the washing tank (2). Is lowered as in FIG. 2 (b).

Since the washing is not done efficiently at such low water level, the water level must be replenished to the reference switch (h1) which ensures the efficient washing effect.

Therefore, as shown in FIG. 5, the water supply level h5 is set, and after the washing motor 9 rotates, the water level begins to decrease due to the water absorption of the cloth, and the water level is lowered from the reference water level h1 to the water supply level h5. When the water supply is lowered, the water supply valve (5) is turned on and the water is supplied again to the reference water level (h1).

If the amount of laundry is so small that the laundry is locked in the standard water level, the water level does not decrease even after the rotation of the washing motor 9, but rather, the water level is increased by the volume of the laundry immersed in the water.

In the case of a small amount of laundry as shown in (b) of FIG. 2, when the water level is slightly lowered to the resupply water level (h5), the microcomputer 13 rotates the drum 3 by the washing motor 9 on time. It is replenished and refilled to replenish the water level up to the reference level (hl), but this refill does not occur more than once or two times.

In addition, when there is a lot of laundry, as shown in (d) of FIG. 2, the water level starts to drop rapidly from the reference level h1.

Therefore, when the water supply level h5 is lowered, the rotation of the washing motor 9 is stopped, and the water supply is turned off at the same time as the rotation by the drum 3 is stopped, and when the water level is raised to the reference water level h1, the water supply is turned off again. .

However, since the amount of guns has not been soaked, the guns have not yet been wetted. When the washing motor 9 is turned on after the refilling is completed and the drum 3 starts turning again, the water absorption of the guns continues and the water level is lowered again. When the water level is lowered to the water level (h5), another rewatering occurs, and when there are many guns, the water level is lowered → the water level refilled by the water supply is lowered → the water level is lowered repeatedly.

FIG. 6 is a characteristic diagram of refilling frequency according to the amount of discharge. When the rewatering differential d1 of FIG. 5 is narrowly set, the number of rewatering occurrences increases further, and the number of rewatering occurrences decreases as the interval of the rewatering differential d1 is set larger.

As shown in FIG. 7, the number of refills generated according to the quantity varies as described above with reference to FIG. 6, so that the number of refills can be distinguished by checking the amount of refilling. As shown, for example, in the case of a small amount of washing water having a rewatering frequency of less than 0-n1, the washing time is wt1 and the rinsing water level is 11, and in the case of a large amount of water having a rewatering frequency of more than n3, the washing time of wt3 We wash by 13 rinse water levels.

wt1 wt2 wt, 11 12 Since it is 13, check the number of replenishment to reduce the washing time in a small amount and to lower the rinsing water level.

Therefore, referring to FIG. 8 for the method of detecting the amount of water, when the washing is started, the microcomputer 13 puts an initial value (0) into the memory renumbering memory address RS of the memory and the washing motor ( Turn off 9) and check whether the reference level is reached by using the pressure sensor (6).

As a result of the check, when the reference water level is reached, the water supply valve 5 is turned off, and the washing motor 9 is turned on to start washing by rotating the motor by washing rhythm.

If the water level does not reach the reference level, the washing motor 9 is again turned on. If the washing motor 9 is not turned on, the water supply valve 5 is turned on to supply water. Compare the refilled water level to the standard water level

If the reference water level is higher than the water supply level, the washing motor 9 is turned on to start washing by rotating the motor by washing rhythm. If the reference water level is not higher than the water supply level, +1 is added to the number of times of refilling the memory. Do it.

1 is stored in the refill frequency memory address where the initial value (0) is stored, the washing motor 9 is turned off, and the water supply valve 5 is turned on to resupply water to the set water level again.

When the water supply is completed again to the reference level through the same process as above, the water supply valve 5 is turned off and the washing motor 9 is turned on to start washing.

However, when the amount of water is small, the water level is lowered by water absorption of the gun again, and when the water level is lowered to the water supply level, two times are stored in the refill frequency memory RS.

In this way, after the laundry is completely wetted with water and the water level deterioration due to water absorption of the cloth is replenished to the standard level by resupply, no resupply occurs. The refresh rate is stored.

Therefore, if the number of refills is n1 or less, wt1 is stored in the washing time (WT) of the memory, and when this wt1 time elapses, the washing is completed after the drainage, and the process proceeds to the next rinsing cycle.

If the number of times of refilling is n2 or more and n3 or less, the washing time WT is determined to be wt2, and when n3 or more times, it is determined that the laundry is large, and the washing time WT is wt3.

When the washing according to the amount is completed, go to the rinse stroke and check the number of times of refill of the memory when the rinsing starts.

If resupply frequency (RS) is n1 or less, enter l1 in the rinse set water level (L) of memory; if n or more, 12 or less times, set 12 in the rinse set water level (L); Enter 13. Thereafter, the water supply valve 5 is turned on, and the washing motor 9 is turned on after completion of the water supply to the rinse setting level set according to the quantity as described above, and the rinsing is started until the rinsing completion.

When the rinse is completed, drain to the next stroke.

As described in detail above, the present invention is able to subdivide and detect the amount from a minimum amount to a large amount in a drum washing machine, so that the optimum washing according to a small amount, an appropriate amount, and a large amount of laundry, that is, when the laundry is a small amount of washing time In addition to saving time and water by reducing the rinsing water level, and in the case of a large amount of laundry, the washing time is automatically extended and the rinsing water level is increased to perform the optimal washing.

Claims (1)

A first step of detecting whether the water supplied to the washing tank reaches the reference level after the start of the washing administration; and checking whether the water level is lowered to the resupply level after washing for a predetermined time when the reference level is reached in the first step. Two steps; The third step of detecting the number of times of refilling by repeating the process of checking whether the water level is lowered to the standard level, washing again for a predetermined time, and then checking whether the level is lowered to the level of resupplying again when the water level is reduced to the second level; Washing method by detecting the quantity of drum washing machine, characterized in that the fourth step of performing the laundry administration by determining the amount of cloth in accordance with the number of re-feed detected in step 3