KR950014768B1 - The control unit of sterilizing and drying for tableware - Google Patents

Abstract

The apparatus for setting sterization and dry times automatically as well as providing alarm for full level of water basin, includes: an operation switch(10) selecting the desired condition; a controller(1) supplying control signal for sterization lamp(6), motor(4), and heater(5) with selected signal of the switch; a sensor(11) detecting inside temp. of dryer; a switching means(2) supplying power with the control signal; and a door switch(3) switching power according to open/close state of door.

Description

Dish Sterilization and Drying Control

1 is a functional block diagram showing the overall configuration of the present invention.

2 is a detailed circuit diagram of the switching unit (2).

* Explanation of symbols for main parts of the drawings

1 control unit 2 switching unit

3: door switch 4: motor

5: heater 6: sterilization lamp

7: high water level detection unit 8: LED driving unit

9: LED display unit 10: operation switch unit

11: temperature detector 12: speaker

13: power supply

The present invention relates to a control device applied to the dish sterilization and drying apparatus. Conventionally, when sterilizing and drying dishes using dish sterilization and drying apparatus, the sterilization and drying time were set by the user operating the switch on the operation panel directly. However, since the setting time according to the amount of the dishes stored in the dish sterilization and drying apparatus is not known, it is difficult to set a proper drying and sterilization time that is different from the amount of the stored dishes. There was a problem causing unnecessary power consumption.

In addition, conventionally, it is not possible to identify the degree of accumulation of water in the drip tray receiving water generated by drying the dishes. Although a separate drainage basin was installed in the trough, this was inconvenient due to not knowing the proper time to discard the water received in the trough, such as having to put a separate container at the outlet of the drainage bin.

Therefore, the present invention devised to solve the problems of the prior art, sterilizing and drying the stored dishes by automatically setting the sterilization and drying time even if the user does not directly set the sterilization and drying time of the tableware, drip tray It is an object of the present invention to provide a dish sterilization and drying control device that automatically detects the number of water and informs the user with an audible signal.

In order to achieve the above object, the present invention includes an automatic operation switch, a sterilization switch, a drying switch, a power switch, the operation switch unit for transmitting an operation command from the user, and through the operation switch unit sterilization switch, drying switch When inputting user command, it outputs control signal for driving sterilization lamp, motor and heater for preset time according to ambient temperature detection signal when user command is input through automatic operation switch. A control means for outputting a display LED drive control signal indicative of a state, a temperature detection means for sensing a temperature in the dish storage compartment and transmitting a detection signal accordingly to the control means, and a display LED drive control signal from the control means. A corresponding LED driver in the display LED unit and a control signal output from the control means Switching means for switching input receiving the sterilizing lamp, power supply to the motor and a heater and, in accordance with the opening and closing of the dish storage compartment door were to be provided with a door switch for switching the power supplied to the switching means.

In addition, the present invention is to provide a water level detection unit for detecting the full water level of the drip tray and transfer to the control means, and a speaker for driving the audible signal according to the full water level detection from the control means.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention; 1 is an overall configuration of the present invention, 1 is a control unit, 2 is a switching unit, 3 is a door switch, 4 is a motor, 5 is a heater, 6 is a UV sterilization lamp, 7 is a full water level detection unit, 8 is an LED The driving unit, 9 is a display LED unit, 10 is an operation switch unit, 11 is a temperature detecting unit, 12 is a speaker, and 13 is a power supply unit.

First, in order to operate the present invention, a user must drive various operation switches in the operation switch unit 10. The operation switch unit 10 includes a power switch for applying power, an automatic switch for automatically operating, sterilization and And a sterilization and drying switch to allow the drying operation.

The control unit 1 controls sterilization and drying operations according to the operation of the operation switch unit 10, and provides a display LED driving control signal indicating an operating state to display each operating state. In addition, it consists of a 1-chip microcontroller to perform the control operation by the control program mounted on its own.

The LED driver 8 receives the control signal from the controller 1 to drive the display LED unit 9 and is configured by using an addressable latch IC.

The temperature detection unit 11 provides a temperature data in the dish storage unit to the control unit 1 when the control device is commanded to operate in the automatic operation mode, and constitutes a circuit including a dummyistor. The full water detection unit 7 is installed in the water tank and detects when the water contained in the water tank reaches a certain level, and provides the water level detection signal to the controller 1.

The switching unit 2 provides the operation power supply voltage from the power supply unit 13 to the respective functional units, and receives the operation control signal from the control unit 1 for the motor 4 and the hitter 5 for sterilization and drying operations. ), The operation power supply to the sterilization 6 is switched. The door switch 3 is installed on the dish storage chamber door of the dish sterilizer and the dryer to block the operation signal supply to the motor 4, the heater 5, and the sterilization lamp 6 when the door is opened. .

Now, look at in detail the operation of the present invention when the operation switch in the operation switch unit 10 is as follows. When the user first turns the sterilization switch and the drying switch on, this signal is input to the control unit 1, where the setting of the sterilization and drying time is 20 minutes to 40 minutes as the sterilization switch and the drying switch are continuously pressed. → 60 minutes → is set while repeating the continuous, sterilization time is set while repeating 10 minutes → 20 minutes → 60 minutes → continuous.

Operation signals of the sterilization switch and the drying switch are input to the control unit 1, and the control unit 1 drives the sterilization lamp 6, the heater 5, and the motor 4 for a set time according to the operation of the sterilization switch and the drying switch. The signal is applied to the switching unit 2. The switching unit 2 receives the operation control signal from the control unit 1 and applies operating power to the sterilization lamp 6, the heater 5, and the motor 4, but the door switch 3 is 'ON'. Make sure that the operating power is only applied when there is a tableware door closed.

Then, when the automatic switch in the operation switch unit 10 is turned 'ON', the control unit 1 receives the detection signal corresponding to the temperature sensing in the dish storage room through the temperature detection unit 11 and is initially installed and stored. During the sterilization and drying operation control signal is applied to the switching unit (2). That is, the temperature detector 11 provides the change of the storage room temperature to the controller 1 as a change signal of the voltage through the change of the constant value by using the thermistor, and the controller 1 is the reference voltage and the temperature detector. The temperature information is provided by comparing the low pressure change signal from (11). In addition, by recognizing the sterilization and drying control time according to the corresponding temperature low information in the data table stored in its own memory, the operation control signals of the sterilization lamp 6, the heater and the motor 4 are transferred to the switching 2 for the corresponding time. The user automatically performs sterilization and drying without having to set sterilization and drying time.

On the other hand, when the water is filled in the water tank of the dish sterilizer and the dryer, the full water level detection unit 7 informs the control unit 1, and the control unit 1 hears audible melody, alarm sound, etc. through the speaker for a predetermined time. Will output a signal. In addition, the LED driver 8 lights and turns off the corresponding LED in the display LED 9 provided for each operation state.

2 is a detailed configuration diagram of the switching unit 2 according to the present invention. R1 to R11 denote resistors, Q1 to Q5 denote transistors RY1 to RY3 denote relay switches, respectively, and the same reference numerals as in FIG. 1 denote the same components as in FIG.

Looking at the cleaning configuration and operation of the switching unit 2 with reference to the drawings, the sterilization and drying operation control signals from the control unit 1 is input through the resistor (R5) and the resistor (R1), respectively. Accordingly, the bias voltage is applied to the transistors Q2 and Q1, respectively, and the DC power supply voltage is applied to each collector end from the power supply unit 13 through the door switch 3, so that only when the door switch is 'ON', The transistors Q1 and Q2 can operate only when the door of the storage chamber is closed. As a result, even when the sterilization and drying operation is in progress in the state of the storage compartment door, when the storage compartment door is opened and the door switch 3 is 'OFF' during operation, the sterilization and drying operation is stopped according to the OFF of the transistors Q1 and Q2. When the transistors Q1 and Q2 are 'ON' in accordance with the sterilization and drying operation control signals while the cabinet door is closed, the DC power voltage is applied to the resistors R5 and R6 → transistor Q3 to drive the relay switch RY1. By applying alternating current (AC) power to the heater (5) it is 'ON'. Similarly, the resistor (R7) → diode (D2) → transistor (Q4) is applied to drive the relay switch (RY2) to turn the motor (4) 'ON', the resistor (R10, R11) → power to the transistor (Q5). A voltage is applied to drive the relay switch RY3 to turn on the germicidal lamp 6. Of course, since the sterilization and drying operation can be selected separately, the heater 5 and the motor 4 driven during the drying operation and the sterilization lamp 6 driven during the sterilization operation operate separately.

On the other hand, it is preferable to turn 'OFF' of the heater 5 rather than the motor 4 when the drying operation is 'OFF', and when the drying operation is 'OFF', the capacitor C1 is connected to the capacitor C1 through the diode D1 to the clause R8. The charged voltage is configured to discharge through the resistor R9 to delay the 'OFF' time of the transistor Q4 so that the 'OFF' of the motor 4 is delayed from the 'OFF' of the heater 5.

Therefore, the present invention configured and operated as described above enables the automatic sterilization and drying operation to increase the convenience of use, and also the natural operation of stopping the fan operation after 2 seconds for removing the latent heat after the power is turned off. It detects the water level of the drip tray and notifies the user as an audible signal, thereby ensuring the clean use of the product.

Claims (5)

Automatic operation switch, sterilization switch, drying switch, including a power switch, the operation switch unit 10 for transmitting an operation command from the user, the user command input through the sterilization switch, drying switch of the operation switch unit 10 Is controlled to drive the sterilization lamp 6, the motor 4 and the heater 5 for a preset time according to the ambient temperature detection signal when the user command is input through the automatic operation switch. A control means 1 for outputting a signal and outputting a display LED drive control signal indicating an operation state, and a temperature detection means for sensing a temperature in the dish storage room and transmitting a detection signal accordingly to the control means 1; 1), an LED driver 8 which receives the display LED drive control signal from the control means 1 and drives the corresponding LED in the display LED part 9, and a control signal output from the control means 1; Switching means (2) for switching the power supply to the sterilization lamp (6), the motor (4) and the heater (5) by receiving the input, and switching the power supplied to the switching means (2) in accordance with opening and closing of the dish storage door Disinfection and drying control device characterized in that it comprises a door switch (3). 2. The water level detecting unit (7) according to claim 1, wherein the water level detecting unit (7) detects the water level of the drip tray and delivers it to the control unit (1), and the speaker (12) drives an audible signal according to the water level detection from the control unit (1). Disinfection and drying control device characterized in that it further comprises. The dish sterilization and drying control apparatus according to claim 1 or 2, wherein the temperature detector (11) comprises a dummy mixer. 3. Dishwasher and drying control device according to claim 1 or 2, characterized in that the LED driver (8) comprises an addressable latch element. 3. Dishwasher and drying control device according to claim 1 or 2, characterized in that the control means (1) comprises a one-chip microcontroller.