KR0151298B1 - Water level device and method of a washing machine - Google Patents

Abstract

The present invention relates to a water level setting device and a method according to the correction amount table of the automatic washing machine, and when the water level according to the quantity set in the conventional microcomputer and the user desired level is different, the user must manually set the water level, and also the quantity detection Considering that the values in the table are fixed, the micom must be masked again when changing the specification or tension of the drive unit, and set each code value for the water level correction outside the washing machine to set the water level according to the user's choice and the level for each tension. It is equipped with a quantity detection table selection unit for the built-in quantity detection table for each tension corresponding to each code value and the microcomputer to set the water level according to the code value setting of the quantity detection table selection unit to set the code value set outside the washing machine Capacity set corresponding to each code value from each code value determined by discrimination By setting the water level according to the value of the quantity detection table by comparing the value of the support table with the accumulated pulse number, the user can arbitrarily set the desired water level from the outside of the washing machine. Since the value of the quantity detection table can be set outside the washing machine, it is possible to set an appropriate water level at any dose.

Description

Water level setting device and method according to quantity detection table correction of automatic washing machine

1 is a structural diagram of a general washing machine.

2 is a block diagram of a driving circuit of a general washing machine.

3 is a diagram showing the number of pulses according to the quantity detection.

(A)-(c) are each embodiment figure of the water level setting apparatus which concerns on this invention.

5 is a diagram showing a pulse number graph for each tension for explaining the present invention.

Figure 6 is a diagram showing a dose detection table for each tension in accordance with the present invention.

7 is a flow chart for performing the water level setting method according to the present invention.

* Explanation of symbols for main parts of the drawings

100: quantity detection table selector 200: microcomputer

VR1: Variable resistor SW1: Rotary switch

The present invention relates to a fully automatic washing machine, and more particularly, to an apparatus and method for setting a water level according to a quantity detection table correction of a fully automatic washing machine, which is capable of arbitrarily raising or lowering a setting level with respect to the same quantity of detection pulse number.

In general, the washing machine is a water level sensor (1) for detecting the water level in the washing tank (8), the water supply side (2) for controlling the water supply, the drainage side for controlling the drainage of the wash water when dewatering, as shown in FIG. ), A clutch (7) and a motor (4) for rotating the pearl shader (5) during washing or rotating the pearl shader (5) or the washing tub (6) when dewatering by receiving power from the motor (4). And a V-belt 9 for transmitting power to the clutch 7, and a quantity detection sensor 10 for detecting a quantity.

As shown in FIG. 2, the driving circuit includes a display unit 11 for displaying the remaining time and washing progress during washing, a key input unit 12 provided with various keys for selecting each stroke, and the water level sensor 1. Water level detection unit 13 for detecting the water level in the washing tank (8) by using, a quantity detection unit (14), a water supply valve and a drain valve and the motor (4) for detecting the amount of water using the quantity detection sensor (10) Load driving unit 15 for driving a load such as a), a microcomputer 16 for controlling each system unit according to a key input of the key input unit 12, and a power supply unit 17 for supplying power to each system unit. have.

The quantity detection method in the washing machine configured as described above is as follows.

First, when laundry is put in and the motor 4 is turned on for a predetermined time, the driving force of the motor 4 rotates the pearl shader 5 so that the laundry rotates as well.

When the motor 4 is turned off, the inertia is different according to the amount of laundry. When the laundry is large and the laundry is small, the input waveform of the quantity sensor 10 is different as shown in FIGS. 3A and 3B. I will.

Therefore, when the microcomputer 16 is programmed, the number of dose pulses for each dose is obtained by rotating the motor 4, and the number of dose pulses corresponding to each level is tabled and input to the microcomputer as shown in Table 1 below. When the washing machine uses a washing machine, if the laundry is put into the washing machine and washing is performed, the washing machine turns on / off the motor 4 several times and accumulates the number of pulses generated when the motor 4 is turned off in the quantity detecting unit 14. Will be determined.

That is, when the total number of pulses is 87, the microcomputer 16 judges the quantity of water as about 3.1Kg-4Kg, as shown in the quantity detection table of Table 1, automatically sets the water level to the medium level, and supplies the water to the medium level to wash and rinse. Will proceed.

However, in the conventional technology as described above, in the washing machine maker, the table is configured by setting an appropriate level according to the quantity, so that the level is set accordingly, which may be irrelevant to the actual level desired by the user, in which case the user manually There was an inconvenience to set the water level.

In addition, the preparation of the capacity detection table in the washing machine maker is set by testing after setting the V-belt to standard tension, but when changing the setting state of the drive, that is, changing the specification of the V-belt or changing the standard tension, the capacity detection in the microcomputer is measured. If the table needs to be changed, proper level setting is possible, but in order to change the quantity detection table, it is necessary to re-mask the microcomputer so that a loss occurs in terms of cost and time.

Therefore, the present invention has been made in view of this point, and an object of the present invention is to input the quantity detection table for the step-by-step tension inside the microcomputer to select a desired quantity detection table value from the outside of the washing machine, so that the user can set the desired level and the specification of the driving unit The present invention also provides an apparatus and method for setting a water level according to a quantity detection table correction of a full-automatic washing machine, which can easily set the water level according to the tension change.

A feature of the present invention for achieving this object is a fully automatic washing machine for sensing the amount of washing machine inner tank using the rotational inertia of the motor, for the water level correction from the outside of the washing machine for setting the water level according to the user's selection and level by tension Fully automatic with a quantity detection table selection unit for setting each code value, and a microcomputer for embedding a quantity detection table for each tension corresponding to each code value and setting the water level according to the code value setting of the quantity detection table selection unit. The water level setting device according to the quantity detection table correction of the washing machine.

Another feature of the present invention is a water level setting method of a full-automatic washing machine which performs the on / off of the motor a predetermined time and accumulates the number of pulses at the time of motor off to perform a quantity detection. In the water level setting method according to the correction of the amount detection table of the automatic washing machine, which sets the level according to the value of the quantity detection table by comparing the value of the quantity detection table and the accumulated pulse number set corresponding to each code value. have.

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

4 is a view showing an embodiment of the water level setting device according to the present invention, which shows the code values for the water level setting according to the user's selection and the water level setting for each tension according to the external code value setting in FIG. A quantity detection table selection unit 100 for setting is further provided.

The quantity detection table selector 100 includes a rotary switch SW1 connected to the code detection port ad of the microcomputer 200 as shown in FIG. 4 (a), and the rotary switch is a rotary digital coordination dip. (Coded Dip) switch.

According to the present invention configured as described above, when the capacity detection pulse number graph for each tension as shown in FIG. 5 increases the standard tension, the number of detection pulses decreases as shown in FIG. 5 (a), and when the standard tension is reduced. In consideration of the fact that the number of dose detection pulses increases as shown in (b), a dose detection table for each stage tension is prepared as shown in FIG. 6 and input to the microcomputer 200.

At this time, the output data values corresponding to each code value corresponding to the dose detection table for each step tension are shown in Table 2 below.

In this state, if you want to adjust the water level setting by using the rotary switch (SW1), select code No. 8 where the standard tension value is stored, and in this case, the dose detection table obtains code data No. 8 to compare the dose pulses. As a result, it is possible to detect the quantity without adding or subtracting the number of pulses. That is, the same table as in the standard dose detection table as shown in Table 1 is applied.

On the other hand, when the user determines that there is little water, when the rotary switch SW1 is set from 8 to 0-7, the code is changed so that the washing level is set high even with the same quantity of detection pulses.

For example, in the case where the number of the quantity detection pulses is detected in code 8, the decimal point is set by the table of FIG. 6, but when the code 7 is set, the number of pulses in the same amount of laundry is set at 100 by the low water level.

Similarly, if the water level is set high, selecting code 9-F will set the level to 9-F.

4 (b) shows another configuration example of the quantity detection table selection unit 100, and is connected in series to the voltage source (+ 5V) of the code detection port ad of the microcomputer 200, respectively. Four pairs of resistors (R1, R2), (R3, R4), (R5, R6), and (R7, R8) are connected to achieve 16 levels of code value by eliminating unnecessary resistor connections when necessary code configuration. It is composed.

At this time, the selection of code 8 in which the standard tension value is stored is selected by connecting + 5V only to the code detection port (d) of the microcomputer 200 and grounding the other code detection port (ac), and the user wants to increase the water level setting. In this case, as in the above embodiment, 0-7 code values may be selected, and in order to lower the water level setting, the 9-F code may be set.

In this case, when the F code is to be set, all of the code detection ports a-d of the microcomputer 200 may be connected to + 5V. That is, only the resistors R1, R3, R5, and R7 need to be connected.

FIG. 4 (c) shows another configuration example of the quantity detection table selection unit 100, and according to the voltage input to the analog / digital conversion port A / D of the microcomputer 200 in advance. A variable resistor VR1 and a resistor R10 for determining the code value of the set dose detection table and setting the water level according to the dose detection table are connected to the analog / digital conversion port A / D.

In this configuration, a voltage of (VR1 / (VR1 + R10)) × 5V is applied to the analog / digital conversion port (A / D) of the microcomputer 200, so that the variable resistor VR1 is varied to convert the analog / digital conversion. By adjusting the voltage input to the ports A / D to 0-5V, it is possible to determine the code value of the quantity detection table set in advance as shown in FIG. 6 as shown in Table 3 below to adjust the water level setting.

Meanwhile, the present invention as described above will be described with reference to the flowchart of FIG. 7.

First, the on / off of the motor 4 is performed for a set amount of time for the detection of the quantity, and the number of pulses at the time of turning off the motor 4 is accumulated.

Then, it is determined which value is the currently selected code value, and the water level is set by comparing the value of the quantity detection table of FIG.

If the code value is set to 0 and the integrated pulse number is 80, the high water level is set in the table of FIG. 6, and if the pulse number is 90, the middle water level is set.

As described above, the present invention enables the user to set a desired level of water level by storing a quantity detection table for each step tension in the microcomputer so as to set a value of the desired quantity detection table outside the washing machine. In addition, since the value of the quantity detection table corresponding to the specification or the tension change of the driving unit can be set outside the washing machine, it is possible to set an appropriate water level at any dose.

Claims (5)

In the automatic washing machine which detects the quantity of the washing machine's inner tank using the rotational inertia of the motor, the quantity detection table is selected to set each code value for the water level correction outside the washing machine to set the water level according to the user's selection And a microcomputer for embedding a tension detection table for each tension corresponding to each code value and setting the water level according to the code value setting of the quantity detection table selection unit. According to the water level setting device. The apparatus of claim 1, wherein the quantity detection table selector comprises a rotary switch to set the respective code values. The method of claim 1, wherein the quantity detection table selector is connected in series to the voltage source, respectively, so as to eliminate the unnecessary resistance connection when the necessary code value is configured to obtain the required code value, respectively connected in parallel to the code detection port of the microcomputer The water level setting device according to the quantity detection table correction of the automatic washing machine, characterized by consisting of four pairs of resistors. The method of claim 1, wherein the quantity detection table selector is connected in series to a voltage source and connected in parallel to an analog / digital conversion port of the microcomputer to change the voltage value input to the analog / digital conversion port to change the code value. The water level setting device according to the quantity detection table correction of the automatic washing machine, characterized by consisting of a variable resistor and a resistor that can be set. In the water level setting method of the fully automatic washing machine which performs the on / off of the motor several times and accumulates the number of pulses when the motor is off, the quantity is detected, each code is determined from each code value determined by determining the code value set outside the washing machine. And setting the water level according to the value of the quantity detection table by comparing the value of the quantity detection table set corresponding to the value and the accumulated number of pulses.