KR100323691B1 - method for sensing volume of loundary of drum washing machine - Google Patents

Abstract

PURPOSE: A clothing amount sensing method for a drum type washing machine is provided to recognize a water supply amount proportional to a clothing amount according to a flow rate of water and a water supply time period by setting a predetermined reference water level, thereby sensing the clothing amount precisely. CONSTITUTION: A clothing amount sensing method for a drum type washing machine includes the steps of advancing to washing stroke after putting clothing in a drum(S31), supplying water up to a first set water level(S32,S34), calculating a flow rate per a unit time as the water supply to the first set water level is finished(S35), rotating a motor after beginning water supply as the flow rate is calculated(S36), stopping the water supply and the rotation of the motor as the water supply up to a second set water level is finished(S37,S38), and calculating a water supply amount from the first set water level to the second set water level(S39), and determining a clothing amount according to a deviation between the calculated water supply amount and a set standard water supply amount(S40).

Description

Method for sensing volume of loundary of drum washing machine

The present invention relates to a washing machine, and more particularly, to a quantity detection method of a drum washing machine.

Generally, a washing machine is a machine for washing laundry by performing washing, rinsing, and dehydrating strokes according to a predetermined algorithm. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.

At this time, as shown in FIG. 1, the drum washing machine includes a main body 1, a tub 2 fixed by a damper (not shown) inside the main body 1, and laundry into the tub 2 and a motor ( The driving force of 10) is transmitted through the belt 11 to rotate the drum 3 for washing-related stroke, the thermistor 4 for measuring the temperature of the washing water supplied to the drum 3, and to input detergent. Detergent container (5), the water supply pipe (6) for supplying the washing water or the washing water mixed with the detergent of the detergent container (5) connected to the detergent container (5), drain pipe for discharging the washing water used in the washing stroke to the outside (7) ) Is connected to the end of the drain pipe (7) and comprises a pump (8) and a drain hose (9) for forcibly pumping the washing water.

And when looking at the operation of the drum washing machine configured as described above, first, when the user opens the door (not shown) attached to the front of the main body 1, puts the laundry, and inputs the washing command through the control panel, the washing water is the detergent container (5). Guided by the water supply pipe (6) through the) is filled in the drum (7). Subsequently, when the washing water is filled above a certain level, the motor 10 is driven and the drum 3 rotates to perform washing.

At this time, if the user selects a boiled laundry, washing is performed using high temperature wash water.

On the other hand, when the washing is completed, the pump 8 is operated so that the washing water is drained to the outside via the drain pipe 7 and the drain hose 9, and when the draining is completed, the rinsing and dehydration stroke are continuously performed, and the washing administration ends do.

Hereinafter, with reference to the accompanying drawings, the detection amount of the drum washing machine according to the prior art as follows.

As shown in FIG. 2, in the conventional method of detecting a quantity of a drum washing machine, when a user opens a door of a drum washing machine and inputs laundry, and then inputs a washing command, the controller of the drum washing machine (not shown) In order to detect the quantity of water before performing the washing administration, the washing water is supplied to a predetermined level (S11).

Subsequently, the motor 10 is stirred left / right at a constant speed (50 rpm) (S12), and the water level is sensed (S13) to determine whether resupply water is necessary (S14).

And if the determination result (S14), if re-water is necessary, the re-water is performed and the number of times is counted (S15).

Subsequently, it is determined whether the set time, i.e., the time limit for the quantity detection operation, has been reached (S16). If the set time has not been reached, the steps S12 to S15 are repeatedly performed to continue counting the number of refills, and then to the set time. If it reaches, the quantity of water is determined by the number of refills (S17).

At this time, since the washing water soaked into the washing cloth and the water level is lower than the initial water level by stirring the motor 10 left / right, the setting time is determined by using a rewatering to replenish the water, and the number of rewatering It is to perform a dose detection by measuring.

Then, the washing water is supplied by washing water corresponding to the amount determined in the determination step (S17) (S18).

At this time, since the amount of water absorption varies depending on the type of laundry cloth, it may affect the number of times of resupply. In other words, even the same amount of laundry cloth can be detected as a different amount of refilling frequency varies depending on the type.

The drum washing machine according to the prior art has a problem that the amount of detection is reduced because it performs the detection of the amount irrespective of the moisture absorption of the laundry cloth. Accordingly, an object of the present invention is to provide a method for detecting a quantity of drum washing machine, which is designed to solve the above-mentioned problems.

1 is a cross-sectional view showing the structure of a general drum washing machine

Figure 2 is a flow chart showing a detection method of the drum washing machine according to the prior art

Figure 3 is a flow chart illustrating a method for detecting the amount of drum washing machine according to the present invention

Figure 4 is a tub and drum perspective view for showing the water supply state of the drum washing machine according to the present invention

Explanation of symbols for main parts of drawings

1: body 2: tub

3: drum 4: thermistor

5: detergent container 6: water pipe

7: drain pipe 8: pump

9: drain hose 10: motor

11: belt

The present invention relates to a laundry washing method of a drum washing machine, the laundry washing method including a motor, comprising the steps of: entering a washing stroke after putting a quantity in the drum; Supplying water to a set water level, calculating a flow rate of water supplied per unit time when water supply to the first set water level is completed; starting water supply and rotating the motor when the flow rate is calculated; Stopping the rotation of the water supply and the motor when the water supply to the set water level is completed, calculating a water supply amount from the first set water level to the second set water level, and a quantity deviation between the calculated water supply amount and the preset standard water supply amount. According to the characterized in that it comprises a step of detecting a dose.

Hereinafter, referring to the attached drawings, a description will be made of a drum washing machine detection method according to the present invention.

Figure 3 is a flow chart illustrating a method for detecting a drum washing machine according to the present invention, Figure 4 is a tub and drum perspective view for explaining the water supply state of the drum washing machine according to the present invention.

In the drum washing machine detection method according to the present invention, first, a user opens a door of a drum washing machine to input laundry, and then inputs a washing instruction.

Subsequently, when entering the washing operation (S312), the washing water is supplied to perform the quantity detection (S32).

Then, it is determined whether the airborne level has been reached (S33).

Subsequently, when the water level is reached, the determination result S33 determines whether the water supply continues to reach the first set water level (S34).

When the determination result (S34), the first set water level is reached, the flow rate of the washing water is supplied (S35).

At this time, as shown in Figure 4, since the standard water quantity according to the air level is a predetermined value can be seen by subtracting the water level from the first set water level can determine the level of the water to be washed water supplied from the water level to the first set water level By measuring the time taken to reach, it is possible to calculate the flow rate of the washing water currently supplied through the relationship between the time and the quantity.

Subsequently, the water supply is continued and the motor 10 is rotated to completely infiltrate the washing water (S36) to determine whether the second set water level is reached (S37).

When the determination result (S37), the second set water level is reached, the water supply and the rotation of the motor 10 is stopped (S38), measured in the step (S35) at the time required to reach the second set water level The water supply amount is calculated by multiplying the flow rate (S39).

Subsequently, the quantity of laundry is determined based on the quantity deviation of the water supply amount with respect to the standard amount according to the second set water level (S40).

At this time, the washing water absorption amount is different depending on the amount of laundry in the drum (3).

Therefore, if there is laundry, the amount of water for the same water level is increased compared to the case without laundry, so subtracting the water supply of the calculation step (S39) from the standard water level for the set water level can determine the amount of wash water additionally supplied by the laundry. The quantity is determined by comparing it with a predetermined reference value.

Then, the washing water is watered according to the set amount of water to proceed washing (S41).

In the laundry washing method of the drum washing machine according to the present invention, by setting a constant reference water level, the amount of water proportional to the amount of water required to satisfy the standard water level is determined according to the flow rate and the water supply time of the washing water, and according to the amount of the laundry to determine the correct amount of water. Since the detection is performed, there is an effect of improving the washing performance and the reliability of the washing machine.

Claims (3)

In the quantity detection method of the drum washing machine provided with a motor, Entering a laundry stroke after putting a quantity in the drum; Supplying water to a first set water level when entering the washing operation; Calculating a flow rate of water supplied per unit time when water supply is completed up to the first set water level; Starting water supply and rotating the motor when the flow rate is calculated; Stopping the rotation of the water supply and the motor when the water supply is completed up to a second preset water level and calculating a water supply amount from the first water level to the second water level; And, And detecting the amount of water in accordance with the quantity difference between the calculated amount of water supplied and a predetermined standard amount of water supplied to the drum washing machine. The method of claim 1, Calculating the flow rate of the washing water by proceeding to the water supply to the first set water level Measuring the amount of wash water supplied by subtracting the standard water amount according to the air level from the first set water level; Measuring the time taken from the airborne level to reach the first set level; A washing amount detection method of a drum washing machine, characterized in that the step of calculating the flow rate according to the amount and time of the washing water. The method of claim 1, Calculating the water supply amount from the first set water level to the second set water level according to the flow rate And calculating the amount of water supplied by multiplying the flow rate by the time required for water supply from the first set water level to the second set water level.