KR920006358B1 - Washing machine pre-engagement system - Google Patents

Abstract

The reservation system automatically cuts off a power source after finishing the cleaning processes, and continues a reserved cleaning process in the case of recovering an electricity service interruption. The reservation system comprises a circuit (14) for rectifying an acterrative input power; EEPROM (10) for storing various reservation data from key-in part (1) and transporting the stored data to a microprocessor (2); a circuit (12) for generating a regular clock pulse; a timer (11) for setting the reservation time data generated from the microprocessor (2) and counting the present time; a circuit (15) for switching off a power relay switch when the reservation time is reached; a circuit (11) for comparing the reservation time with the present time.

Description

Reservation system of washing machine

1 is a circuit diagram of a conventional fully automatic washing machine.

2 is a block diagram of a reservation system of the present invention automatic washing machine.

3 is a signal flow diagram for explaining the operation of FIG.

* Explanation of symbols for main parts of the drawings

1: Key input unit 2: Micom

3: load driving unit 4: display unit

5: power supply unit 6: interrupt generator

7: buzzer drive part 8, 12: oscillation part

9: reset part 10: Y pyrom

11: timer unit 13: comparison unit

14: charging unit 15, 16: relay drive unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reservation system for a fully automatic washing machine, and more particularly, to supply power when a washing process is completed by using a charge / discharge circuit, an EEPROM (hereinafter referred to as EPIROM), and an automatic on / off relay switch. The present invention relates to a reservation system for a washing machine that automatically shuts off and maintains the contents of the reservation laundry when the power is turned on before the scheduled washing time after the power failure.

As shown in FIG. 1, the conventional automatic washing machine includes a key input unit 1 for selecting a desired washing administration by pressing a key for various states such as washing, rinsing, dehydration, and washing time. In accordance with the output signal of the key input unit 1, the microcomputer 2 for controlling the overall operation of the system of the automatic washing machine and the input AC power source AC are converted into constant voltages of a predetermined level so that the system of the microcomputer 2 and the automatic washing machine. A power supply unit 5 for supplying operating power to the power supply unit, a switching unit 3a, an array resistor 3b, a triac (TA ₁ -TA ₅ ), and a capacitor (C ₁ -C ₅ ). When the output terminals (P ₈ -P ₁₂ ) of the high voltage are respectively high, the outputs of the switching unit 3a and the array resistor 3b become high potential, and a trigger signal is applied to the gates of the triacs TA ₁ -TA ₅ . Load port that controls the operation of cold water supply valve (CV), hot water supply valve (HV), motor (M ₁ ) and magnet (MG) The microcomputer using the eastern section 3, a display unit 4 which displays various states such as washing, rinsing, dehydration, and washing time according to the output control signal of the micom 2, and an oscillation signal having an oscillation frequency of 4 MHz. (2) an oscillator (8) for providing a clock signal, a reset unit (9) for initializing the microcomputer (2) upon power on / off, and zero crossing at a commercial frequency to detect an interrupt signal It is composed of an interrupt generator 6 for generating and a buzzer driver 7 for inputting a control signal of the microcomputer 2 to generate an alarm when the washing machine is not operated.

The reservation operation of the conventional automatic washing machine configured as described above is performed by the user in the state in which the constant current source rectified by the power supply unit 5 and the clock generated from the oscillator 8 are applied to the microcomputer 2. Press present / reserved key to set current time, press present / reserved key again to set laundry reservation time, press operation pause key, and microcomputer (2) reads output signal of key input unit (1). In the waiting state until the reservation time.

After that, when the reservation time comes, the microcomputer 2 outputs a high potential to its output terminals P ₈ and P ₉ , and the output signal is output to the switching unit 3a and the array resistor 3b configured in the load driver 3. ) so applied to the gate of the triac (TA ₄₎ (TA ₅₎ through the triac (TA ₄₎ (TA ₅₎ is turned on and, the cold water supply valve (CV) and a hot water supply valve (HV) is open Cold water and hot water are supplied into the washing tank. Then, when water is supplied to a predetermined level in the washing tank, the microcomputer 2 outputs a high potential to its output terminal P ₁₂ for the entire washing time specified by the user, and the high potential signal is converted to the switching unit 3a and the array resistor. After 3b, the triac TA ₁ is turned on to rotate the motor M ₁ counterclockwise. Thereafter, the low potential is output at the output terminal P ₁₁ (P ₁₂ ) of the microcomputer 2, the motor M ₁ is stopped for a predetermined time, and then the high potential is again at the output terminal P ₁₁ of the microcomputer 2. The signal is output and the motor M ₁ rotates clockwise by turning on the triac TA ₂ after passing through the switching unit 3a and the array resistor 3b. As described above, the high potential and the low potential are repeatedly outputted at the output terminals P ₁₁ and P ₁₂ of the microcomputer 2 to proceed with washing for the entire washing time.

However, this automatic washing machine reservation system is forcibly washed for the entire washing time regardless of the amount or type of laundry, and as the washing continues, unless the power is cut off by the user, the waste of washing time and power are reduced. Excessive consumption, and also in the case of reservation laundering, all reservations are canceled when the power outage, the user has to reset the current time and reservation time at every reservation and the inconvenience that the reservation laundering is not possible if the singular during the reservation time And there was an issue.

Accordingly, the main object of the present invention is to provide a reservation system for a washing machine that does not have the above recurrence and problems.

It is another object of the present invention to operate a system with a power charged in a charge battery of a charging / discharging unit when a power failure occurs in a state in which reservation data is stored in the Y-Pirom during reservation washing using EPIROM and a charge / discharge circuit. When the power is turned on before, the reservation laundry contents are kept intact to provide a reservation system of the washing machine to allow the reservation laundry to proceed.

Still another object of the present invention is to improve the safety of the washing machine and to prevent power consumption by shutting off the power input to the relay driver after a predetermined time when the reservation washing process is completed while the power cord is plugged into the plug.

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

2 is a schematic diagram of a reservation system for a fully automatic washing machine according to the present invention, as shown in FIG. The microcomputer 2, the power supply unit 5 for supplying a constant current source of a constant level, the switching unit 3a, the array resistor 3b, the triacs TA ₁ -TA ₅ and the capacitor C _1- . C ₅ ) and the load driving unit 3 which controls the cold water feed valve CV, the hot water feed valve HV, the motor M ₁ , and the magnet MG under the control of the microcomputer 2, and the laundry. And a display unit 4 for displaying rinsing, washing time, reservation time, etc., an interrupt generating unit 6, an oscillating unit 8, a reset unit 9 and a buzzer driving unit 7 Rechargeable battery (BAT) to step down the AC power input when driving the washing machine and converts the stepped AC power to a constant voltage of a constant level, Zener diode (ZD ₁ ), resistor (R ₁ -R ₇ ), capacitor (C ₆ -C ₇ ), light emitting diode (LED ₁ ), light receiving element (PT ₁ ), bridge diode (BD ₁ ) and transistor (TR ₁₎ , TR ₂ ), and when the power is cut off, the inverter is driven by the discharge voltage supplied from the charge / discharge unit 14 to receive and store various reservation data of the key input unit 1 from the microcomputer 2. An oscillator 12 for driving a clock pulse of a predetermined period by driving the Y pyrom 10 and the discharge voltage of the charge / discharge unit 14 and inputting the clock to the Y pyrom 10, and the microcomputer Timer unit 11 which sets the data of the reservation time output from (2) and counts the current time with the clock of oscillator 12 and inputs it to the display unit 4, and from the microcomputer 2 when the reservation is completed. driven by the output control signal and the left power supply relay switches on the power supply 5 and the load by controlling the (SW ₁₎ Triac (TA ₇₎ to block the power to be output, the transistor (TR _3), resistors (R _9, R ₁₀₎ and capacitor (C ₈₎ output from the relay drive unit 15, the timer unit 11 to the A comparison unit 13 which compares the reserved reservation time data and the current time data and outputs a control signal according thereto, and is switched on / off by a control signal outputted from the comparison unit 13 and switches ₁ ) consisting of a triac (TA ₈ ), a transistor (TR ₄ ), a resistor (R _11- R ₁₃ ) and a capacitor (C ₉ ) to control and supply AC power to the power supply unit (5) and the load. In the figure, reference numerals L ₁ and L ₂ denote relay coils, and Vcc denotes a power supply terminal.

Referring to the operation and effects of the present invention configured as described above are as follows.

When the user performs a function washing while the constant current source rectified by the power supply unit 5 and the clock generated from the oscillator 8 are applied to the microcomputer 2, the function reservation key configured in the key input unit 1 is first. Press it, press the water level control key, coskey and detergent key to adjust the water level, course, function, and detergent, and then press the function reservation key again. Then, the microcomputer 2 reads the above data and its output terminal (P _17). ) Is applied to the input terminal DI of the Y pyrom 10 and stored.

After the user adjusts the reservation time by pressing the reservation laundry and presses the present / reservation key again, the microcomputer 2 sends a high potential signal to the start terminal (ST) of the timer unit 11 through its output terminal (P ₁₄ ). It is applied to enable it, and also the reservation time data is applied to the input terminal I ₁ (I ₂ ) of the timer unit 11 via the output terminal P ₁₅ (P ₁₆ ) and set. At this time, the AC power source AC is voltage-dropped through the transformer T ₁ configured in the charge / discharge unit 14 and then full-wave rectified through the bridge diode BD ₁ , and smoothed in the capacitor C ₆ to supply the power terminal Vcc. In this case, since the charging voltage of the rechargeable battery BAT is applied to the zener diode ZD ₁ through the variable resistor VR ₁ , the voltage applied to the zener diode ZD ₁ is lower than its rated voltage. In that case, the zener diode ZD ₁ is turned off, and the transistor TR ₁ is turned off. Therefore, the voltage of the power supply terminal Vcc through the bridge diode BD ₁ is applied to the anode of the light emitting diode LED ₁ through the resistor R ₂ and the resistors R ₅ , R ₆ , and R ₄ . a is applied after the base of the transistor (TR ₂₎ divided by the turns on the transistor (TR ₂₎ - thereby turned on. Thus, the transistor (TR ₂₎ is turned on, the light-emitting diode (LED ₁₎ as turned-are to be turned on the resistance of the light receiving element (PT ₁₎ reduced by irradiating light to the light receiving element (PT _1), the When the resistance value of the light receiving element PT ₁ decreases, the die solution DA ₁ connected thereto is turned on so that the triac TA ₆ is turned on. Thus, the AC power source AC converts into a transformer T _1. ) And the bridge diode BD ₁ to be full-wave rectified to charge the rechargeable battery BAT. After the charging in the rechargeable battery BAT is completed, when the zener diode ZD ₁ is turned on, the transistor TR ₁ is turned on, and the power supply of the power terminal Vcc is a resistor R ₂ and the transistor TR _1. Bypassing through), the light emitting diode (LED ₁ ) has a low potential is turned off, the resistance value of the light receiving element (PT ₁ ) is increased, so that the phase angle of the die liquid (DA ₁ ) is reduced, the triac (TA ₆ ) Is off. As a result, AC power is not applied to the transformer T ₁ and charging is stopped.

After the predetermined time (after the reservation is completed) is set in the timer unit 11 and EPIROM 10, the predetermined time has elapsed and the microcomputer 2 outputs a high signal to its output terminal PA ₁ . This signal is applied to the base of the transistor TR ₃ configured in the relay driver 15 through the resistor R ₈ , and the triac TA ₇ is turned on as the transistor TR ₃ is turned on. ) Is turned on so that the electromotive force is induced in the relay coil (L ₁ ). Due to the electromotive force of the relay coil L ₁ , the power relay switch SW ₁ is turned off to cut off the supply of the AC power source AC to the power supply unit 5. At this time, the timer unit 11 operates by the charging voltage of the rechargeable battery BAT and continuously counts the current time and the reserved time by the clock of the oscillator 12.

After that time elapses, the timer unit 11 outputs the reservation time data and the current time data to its output terminal OT SM, and the comparator 13 outputs the reservation time data and the current time. Comparing the data, if it is the same, a high potential signal is output. The high potential signal output from the comparator ₁₃ turns on the transistor TR ₄ through the resistor R ₁₃ of the relay driver 16, so that the triac TA ₈ is turned on. since the on-AC power source (AC) is supplied to the power supply (5) is a, the electromotive force relay coil (L ₂₎ organic and, a power relay switch (SW ₁₎ by the electromotive force of the relay coil (L ₂₎ turn The microcomputer 2 is driven.

At this time, the microcomputer 2 reads the reservation data from the output terminal D ₀ of the Y pyrom 10 and outputs a high potential signal to the output terminal P ₈ (P ₉ ), which is a load driver. applied to the gate of the triac (TA ₄₎ (TA ₅₎ through a switching unit (3a) and the array resistors (3b) constructed in (3) by being triac (TA ₄₎ (TA ₅₎ is turned on so cold water supply The valve CV and the hot water feed valve HV open to feed the hot and cold water in the dehydration tank. Then, when water is supplied to a predetermined part of the dehydration tank, a high potential signal is output from the output terminal P ₁₂ of the microcomputer 2 during the entire washing time, and the triac TA is performed through the switching unit 3a and the array resistor 3b. ₁ ) Turn on the motor (M ₁ ) by turning on, then low potential signal is output from the output terminal (P ₁₁ ) (P ₁₂ ) of the microcomputer (2) to stop the motor (M ₁ ) A high potential signal is output from the output terminal P ₁₁ of ( ₂ ) to turn on the triac TA ₂ through the switching unit 3a and the array resistor 3b to turn the motor M ₁ to the right. .

In this way, the output terminals P ₁₁ and P ₁₂ of the microcomputer 2 sequentially output the high potential and the low potential alternately, and then proceed with washing. In addition, when the function reservation key is not pressed, the laundry is not reserved. General laundry administration will proceed.

When 10 minutes have elapsed after the washing machine stops, a high potential is output from the output terminal PA ₁ of the microcomputer 2 so that the power relay switch SW ₁ is turned off.

As described above, the present invention automatically turns off the power when the laundry process is completed by using the charging / discharging unit and the Y pyrom and the power relay switch, and also if the power is turned off before the start of the scheduled laundry even during a power outage, the reservation laundry is not erased and continues to be reserved. There is an effect that the washing proceeds.

Claims (3)

Key input unit 1 for selecting a function reservation, course and washing time, a microcomputer 2 for controlling the entire system according to the output signal of the key input unit 1, and the microcomputer 2 by receiving AC power. In a reservation system for a fully automatic washing machine comprising a power supply unit (5) for supplying operating power to a back and the like, and a load driving unit (3) for washing under the control of the microcomputer (2), AC power input when driving the washing machine is stepped down. And charge / discharge unit 14 for converting the stepped AC power into a constant voltage at a constant level and charging the same, and driving the power supply by the power supplied from the charge / discharge unit 14 when the power is cut off. Is inputted from the microcomputer 2 and stored therein, and is driven by the discharge pyramid 10 and the discharge voltage of the charging and discharging unit 14, which are stored in the reserved data. Timer unit 11 for setting the oscillation unit 12, the reservation time data output from the microcomputer 2 and counts the current time by the clock of the oscillator 12, and when the reservation is completed, A relay driving unit 15 for driving by a control signal to turn off the power relay switch SW ₁ to cut off the AC power supply of the power supply unit 5; and the reservation time data and current output from the timer unit 11; The comparison unit 13 for comparing time data and the relay driver 16 for supplying AC power to the power supply unit 5 by turning on the power relay switch SW ₁ by the output signal of the comparison unit 13. The reservation system of the washing machine characterized by the above-mentioned. The method of claim 1, wherein the relay drive unit 15, 16 has a microcomputer (2) output signal and the comparison unit 13 by the output signal on / off control of the transistor (TR ₃₎ receiving, in the (TR ₄₎ and, a transistor _{(TR 3), (TR 4} ) on / in accordance with the oFF state receive the on / off control triac _{(TA 7), (TA 8} ) and a triac (TA _7), (TA ₈ Reservation system for a washing machine comprising a relay coil (L ₁ ), (L ₂ ) for turning on and off the power relay switch (SW ₁ ) according to the on state of. The smoothing capacitor C ₆ of claim 1, wherein the charging / discharging unit 14 receives the secondary side of the transformer T ₁ , which receives AC power through the triac TA ₆ , via the bridge diode BD ₁ . It connects to the rechargeable battery (BAT), connected to the connection point to the base of the variable resistor (VR ₁₎ and the Zener diode is the resistance (R ₁₎ and a transistor (TR ₁₎ through (ZD _1), and the voltage-dividing resistor (R ₃ -R ₆₎ the collector of the transistor (TR ₂₎ the transistor (TR _2), and connected to the base, as well as also through the light emitting diode (LED ₁₎ connected to the collector of said transistor (TR ₁₎ to the connection point of the through A capacitor C ₇ and a light receiving element TH ₁ for receiving the light of the light emitting diode LED ₁ in series between both terminals of the triac TA ₆ , and the capacitor C the connection point of ₇₎ and a light receiving element (TH ₁₎ through a die solution (DA ₁₎ is configured by connecting the gate of the triac (TA ₆₎ Reservation systems of the washing machine features.

Images