KR100297051B1 - Laundry Resetup method in washing machine - Google Patents

Abstract

PURPOSE: A clothing amount resetting method of a washing machine is provided to improve the precision of the clothing amount sensing by resetting a reference value for determining a clothing amount even when a belt tension of a motor is changed by the long term use. CONSTITUTION: A clothing amount resetting method of a washing machine includes the steps of carrying out a clothing amount resetting function by a user, driving a washing machine motor under a loadless state right and left by carrying out the clothing amount resetting function(ST100), sensing a number of pulse generated by a counter electromotive force when operating or stopping the operation of the washing machine motor(ST200), and resetting a reference value for determining a clothing amount by comparing data of a data table for tension of a belt randomly set in a microcomputer with the sensed pulse number(ST300-ST400).

Description

Resetting method of washing machine {Laundry Resetup method in washing machine}

The present invention relates to a method for resetting a washing machine, and in particular, when the detection rate decreases due to a change in the mechanical device of using the washing machine for a long time, the changed quantity is measured by resetting the quantity determination reference value by newly measuring the quantity detection data under no load. The present invention relates to a method for resetting a washing machine, which enables a more accurate detection rate without being affected by the detection rate.

As shown in FIG. 1, a conventional washing machine is driven by an operating power source obtained from a load driving unit (not shown in the drawing) under the control of a microcomputer (not shown in the drawing) that controls the entire system of the washing machine to generate power. The motor 1, the clutch 3 receiving the power generated by the washing motor 1 to the belt 2, and the clutch 3 are rotated by receiving the power from the clutch 3 to wash the water in the washing tank 6. It consists of the pulsator 4 and the dehydration tank 5 which make it vortex.

The operation of the conventional washing machine configured as described above will be described with reference to FIGS. 1 to 3.

First, in order to wash laundry more effectively, it is necessary to appropriately set the amount of water and detergent amount, washing time, rinsing frequency and water flow corresponding to the amount of laundry and the degree of contamination.

Therefore, washing has been performed by installing the user's judgment or the quantity detection means and automatically setting the water level in accordance with the detected quantity detection amount.

This laundry detection method is frequently used by the back electromotive force of the washing motor.

The method for detecting the amount of laundry by the counter electromotive force of the washing motor is described below.

First, when a user presses a washing key configured in a key input unit (not shown) to input a washing stroke by detection of a quantity, the microcomputer (not shown) reads a key signal of the key input unit and performs an initial operation.

That is, the microcomputer initially opens the cold and hot water valves through the cold water and hot water valves (not shown) through the load driving unit (not shown) to supply water to the washing tank 6 to a small level.

Then, when water supply is completed to a small level in the washing tank 6 by the water level sensor (not shown in the figure), the washing motor 1 is driven. (ST10)

Accordingly, the pulsator 4 is rotated by being transmitted to the pulsator 4 through the belt 2 and the clutch 3 connected to the washing motor 1.

On the other hand, when the power applied to the washing motor 1 is off, the pulsator 4 is rotated by the rotational inertia.

In response to the rotation of the pulsator 4 of the pulsator 4, this time, the washing motor 1 is reversely rotated through the connected clutch 3 and the belt 2.

At this time, even after the power is turned off by the current flowing at the time of turning on the washing motor 1, a certain amount of current remains in the rotor and gradually decreases.

The number of arbitrary pulses generated by the counter electromotive force of the washing motor 1 is read by the microcomputer, and then the capacity is determined by comparing with the quantity determination reference value predetermined in the microcomputer. (ST30, ST40, ST50, ST60)

At this time, the predetermined amount of the judgment amount reference value is input to the program in advance in the washing machine production process, and the washing machine is mass-produced at the factory, once the mass-produced washing machine will always determine the amount of capacity based on the fixed amount determination reference value. (At the time of washing machine driving)

In the case of detecting the amount of water in this manner, as shown in FIG. 2, the tension of the belt 2 connected to the washing motor 1 for driving the washing machine is changed unlike when initially produced at the factory.

Therefore, when the washing machine is used for a long time, since the tension of the belt 2 connected to the motor 1 is changed, the number of dose detection pulses caused by the counter electromotive force generated when the motor is driven also differs from the first mass production.

Therefore, in the conventional laundry washing method of the washing machine, the error is large in the deviation of the parts of the washing machine, the assembly state, the use environment, and the detected quantity of the signal signal, so that it is difficult to determine the appropriate washing level and the amount of detergent. Correct setting was difficult.

Therefore, in the present invention, when the capacity detection rate is lowered due to the change of the mechanical device with the long-term use of the washing machine, the amount of detection data is not affected by the changed capacity detection rate by newly measuring the capacity detection data in the no-load state and resetting the capacity determination reference value. It is an object of the present invention to provide a method for resetting a washing machine to make the rate more accurate.

1 is a schematic configuration diagram of a conventional washing machine.

2 is a tension change diagram of the motor belt applied to FIG.

Figure 3 is a flow chart for explaining a conventional method for detecting the amount of laundry during washing.

Figure 4 is a flow chart for explaining a method for resetting the washing machine according to the present invention.

5 is an exemplary diagram illustrating a method of storing a new quantity determination reference value in the quantity reset method of FIG. 4;

*** Explanation of symbols for the main parts of the drawing ***

1: motor 2: belt

3: clutch 4: pulsator

5: dehydration tank 6: washing tank

Washing quantity reset method according to the present invention as described above, the step of the user executing the quantity reset function of the washing machine, the step of driving the washing machine motor of the no-load state left / right by executing the quantity reset function, the washing machine Detecting the number of pulses generated by the counter electromotive force during the operation / stop of the motor, and by selecting the quantity reference value to be reset by comparing with the tension data table of the belt arbitrarily set and input to the microcomputer It characterized in that it comprises a step of resetting.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings 1 to 5 as follows.

When the tension of the belt 2 connected to the motor 1 is changed for various reasons, that is, when the capacity detection capability is deteriorated, the amount of weight is determined by detecting the dose by detecting the tension of the belt connected to the motor. The reference value can be reset.

The process is described based on the flow chart of Figure 4 as follows.

First, the user executes the quantity reset function of the washing machine. Then, the microcomputer drives the motor 1 left / right in the no-load state (ST100), and then reads the number of pulses generated by the counter electromotive force of the motor 1 into the microcomputer 500. (ST200)

Here, the number of pulses generated by the counter electromotive force of the motor 1 differs depending on the tension of the belt 2, respectively.

When the number of pulses is input to the micom, the microcomputer in which a data table value having a value according to the number of pulses and a tension value of the belt is arbitrarily selected selects a quantity reference value to be reset by comparing with the number of input pulses. (ST300, ST400)

That is, the data table value closest to the number of input pulses is stored in the data storage unit 500a in the microcomputer 500 as shown in FIG. will be.

In addition, since the user can also set back to the original dose determination reference value set at the time of mass production of the original washing machine, the selection range of the dose determination reference value is widened.

As described above, according to the present invention, even if the belt tension of the motor is changed due to the long-term use of the washing machine, the user can execute the dose reset function to reset the dose determination reference value to more accurately detect the dose. have.

In addition, when the detection rate of the washing machine is lowered due to long-term use of the washing machine, the consumer may receive a claim. In this case, if the quantity reset function is used, the quantity of data and the judgment reference value can be reset. S can be eliminated, and the solution can be solved without replacing all or part of the circuit board (PCB), so that the cost savings can be doubled.

Claims (1)

A user executing a quantity reset function of the washing machine; Driving the no-load washing machine motor left / right by executing the dose reset function; Sensing the number of pulses generated by counter electromotive force when the washing / motor motor is operated / stopped; And resetting the quantity reference value by selecting the quantity reference value to be reset by comparing with the tension-specific data table of the belt input to the microcomputer and set the number of pulses.