KR890006471Y1 - Control circuit of room airconditioner - Google Patents

Abstract

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Description

Room air conditioner remote control circuit using microcomputer

1 is a block diagram according to the present invention.

2 is a detailed circuit diagram of FIG.

* Explanation of symbols for main parts of the drawings

10: power supply unit 20: oscillation unit

30: microcomputer unit 40: drive unit

50: temperature detection unit 60: display unit

70: remote control unit 80: air conditioning unit

T: Transformer PJ1-PJ6: Connector

D ₁ -D ₄ : Rectifier Diode D ₅ -D ₁₉ : Switching Diode

C ₁ -C ₉ : Capacitor R ₁ -R ₂₄ : Resistance

S _W 1-S _W 6: Switch IC ₁ : Microcomputer integrated circuit

IC ₂ : Drive Array Integrated Circuit IC ₃ : Inverter Array Integrated Circuit

IC ₄ : Buffer Array Integrated Circuit IC ₅ -IC ₆ : Operational-Amplifer

IC ₇ : Regulator F ₁ : Current Fuse

F ₂ : Temperature Fuse Q ₁ : Switching Transistor

RY ₁ -RY ₆ : Relay L ₁ -L ₇ : LED lamp

TNR: Varistor MF-C: Operation Capacitor

SP-K: Surge Absorber VR ₁ -VR ₂ : Semi Fixed Resistance

M1: Indoor fan motor M ₂ : Outdoor fan motor

COMP: Compressor

The present invention relates to a room air conditioner (Roon Air-Conditioner) control circuit, and more particularly to a control circuit for remote control of the room air conditioner using a microcomputer.

Conventionally, the analog direct control method was used to remotely control the outdoor side of the detachable room air conditioner, but in this case, the volume of the connection wire between the remote control unit and the external side is increased and the appearance is complicated. It was not good and could not provide various functions in terms of function, which caused consumer complaints.

Accordingly, an object of the present invention is to provide a control circuit for remotely controlling a room air conditioner using a microcomputer.

Another object of the present invention is to provide a control circuit that can provide the maximum function with a reliable and simple circuit configuration in the remote control of the room air conditioner.

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

1 is a block diagram of a remote control circuit according to the present invention, the power supply unit 10 for receiving and rectifying an input AC power and outputting a predetermined DC power voltage (Vcc ₁ ) (Vcc ₂ ), and in the power supply unit 10 Oscillation unit 20 for supplying the oscillation output waveform of a fixed frequency using a voltage-converted input AC power source, On-temperature detection unit 50 for detecting a temperature of the room to provide a predetermined temperature signal, and the power of the room air conditioner A remote control unit 70 for "on" or "off" or selecting a predetermined function, an oscillation waveform of the oscillation unit 20, a temperature signal of the temperature sensing unit 50, and the remote control unit 70. A microcomputer unit 30 for inputting a control signal and controlling to perform a predetermined function selected by an operator and a display circuit 60 for displaying a room temperature state and a cooling operation state under the control of the microcomputer unit 30. It is composed.

In the figure, the outdoor side part 80 is an outdoor part of a separate room air conditioner operated by a remote control circuit according to the present invention and is a part composed of a compressor and a fan-motor for a cooling function.

2 is a detailed circuit diagram illustrating an embodiment of a remote control apparatus according to the present invention, in which a transformer (T), a connector (PJ ₂ ), a rectifying diode (D _1- D ₄ ), and a capacitor (C ₁ -C) are shown in FIG. ₂ ), a portion composed of the resistor R ₁ and the regulator integrated circuit IC ₇ corresponds to the power supply unit 10 of FIG. 1, and includes resistors R _2- R ₅ and capacitors C ₅ -C ₆ . And an NPN transistor Q ₁ corresponds to the oscillation unit 20, and includes a microcomputer integrated circuit IC ₁ , a semi-fixed resistor VR ₂ , and resistors R ₆ , R ₇ , R ₁₄ , R. ₂₁ ), a portion composed of switching diode D5 and capacitors C ₃ , C ₄ , and C ₉ correspond to the microcomputer unit 30, and relays RY _{1 to} RY ₅ , capacitors C ₁₉ , and drive arrays. An integrated circuit (IC ₂ ), a connector (PJ ₃ -PJ ₄ ), a surge absorber (SP-k), an indoor fan motor and a temperature fuse correspond to the driving unit 40, and the resistors (R ₈ -R _13). ), semi-fixed resistor (VR _1), the capacitor (C ₇ -C _8), OP Profile (IC _5, IC _6), connectors ₍₅ PJ) and more, and a portion consisting of MR (Thermistor) corresponding to the temperature sensing unit 50, a resistor (R ₁₅ -R ₂₀₎ and a light emitting diode (LED) ( The part consisting of L ₁ -L ₆ corresponds to the display unit 60, and the inverter array integrated circuit IC ₃ , the buffer array integrated circuit I (4), the resistors R _22- R ₂₄ , and the connector ( PJ ₁ ), a light emitting diode (L ₇ ), a function selection switch (Sw ₁ -Sw ₆ ) and a switching diode (D ₆ -D ₁₈ ) corresponding to the remote control unit 70, and also the compressor (COMP), The part constituted by the fan motor M ₂ , the driving capacitor MF-C and the overload protection relay RY ₆ corresponds to the outdoor side 80.

Therefore, an embodiment of the present invention will be described in detail with reference to the above drawings.

The function of the room air conditioner by selection of a predetermined operator is controlled by the remote control unit 70.

First, referring to the operation sequence, the LED lamp L ₇ of the remote controller 70 emits light when the input power is initially applied.

At this time, if the operation and stop switch (Sw ₁ ) is pressed, operation starts. The microcomputer 30 employs a time delay function such that the compressor of the outdoor unit 80 is operated at least a predetermined time after the operation is completed and restarted.

Therefore, even when the operation / stop switch Sw ₁ of the remote control unit 70 is pressed, the relays RY ₄ and RY ₅ of the driving unit 40 are driven when a predetermined time passes after the start of operation. Drive the compressor and fan motor.

For example, when the room temperature control switch Sw ₂ is set to 25 ° C. in the remote control unit 70, if the room temperature is 28 ° C., the signal at room temperature 28 ° C. is detected by the temperature detection unit 50 and room temperature control. Since the signal of the switch Sw ₂ is higher than the room temperature setting temperature by comparing with the microcomputer, the control signal is sent to the driving unit 40.

On the other hand, since the "high" signal is output from the predetermined output terminal P ₁₁ of the microcomputer unit 30, the signal is inverted in the drive array integrated circuit IC ₂ of the driving unit 40, thereby relay RY ₄ (RY). ₅ ) is driven to drive the outdoor side 80 to operate the compressor of the outdoor side 80 so that the room temperature can be changed to the set temperature of the room temperature control switch Sw ₂ .

At this time, the changing temperature is to be maintained at the set temperature ± 1 ℃.

In the display unit 60, when the room temperature is higher than the set temperature, the cooling operation indicator lamp of the diode L ₁ is turned on.

The diode L ₁ is a lamp for the set temperature, and is set to "on" when the snow temperature is in the range of + 1 ° C to 2 ° C at the set temperature.

The diode (L ₂ ) is a "low" lamp and is turned on when the room temperature is below -2 ° C at the set temperature.

Diode L ₄ is a "slightly high" lamp and is turned "on" if it is between + 2 ° C and 3 ° C at room temperature set temperature.

Diode L ₅ (L ₆ ) is a "high" lamp and is "on" when it is above + 4 ° C at room temperature set temperature.

In addition, when the timer switch Sw ₃ of the remote controller 70 is set at a predetermined time, the microcomputer Ic ₁ in the microcomputer unit 30 receives and counts the oscillation period of the oscillator 20 so that the counting is performed. When the predetermined time is set, the operation of the microcomputer unit 30 and the driving unit 40 ends.

For example, the air flow selection function of the remote control unit 70 will be described. The type of the air flow selection switch Sw ₄ includes "strong wind", "heavy wind", "soft wind", "soft wind", "blowing" and "automatic". When the air flow rate selection switch Sw ₄ of the remote control unit 70 is set to the “strong wind” position, the output terminal P ¹⁰ is outputted as “high” from the microcomputer unit 30.

Therefore, it is energized by the drive array integrated circuit IC ₂ of the driving unit 40 and controlled by the combination of the relays RY _{1 to} RY ₃ , so that the indoor pin motor M ₁ can be easily operated in a “strong wind” state. I can understand.

In addition, when the operation selection switch Sw ₅ is described with the remote control unit 70 as an example, assuming that the selection type of the operation selection switch Sw ₅ is configured as "normal""comfortable""sleep", When the operation selection switch is set to "sleep" operation and the timer switch Sw ₃ is set to a predetermined time, the compressor COMP and the outdoor fan motor M in the outdoor side 80 are moved by the microcomputer 30. ₂ ) is continued to the sleep operation state for the predetermined time.

On the other hand, the remote control unit 70 is a time shortening switch (Sw ₆ ) for the time short (Time short) function is used for shortening the time for line inspection and after service, and all functions are reduced to 1/60 seconds.

In the functions of the switches SW _{1 to} SW ₆ described above, the control circuit according to the present invention is driven by the supporting debinding binary code method, thereby increasing the reliability of the control signal and reducing the occurrence of malfunctions.

On the other hand, the semi-fixed resistor (VR ₂ ) in the microcomputer 30 to adjust the setting voltage of the A / D converter (Analog / Digital converter), the temperature sensing unit 50 for the analogue temperature sensing It uses a method that senses the temperature inside the room as a dummyistor.

As described above, the remote control of the room air conditioner has an advantage of providing a maximum function while providing a reliable and simple circuit configuration.

Claims (1)

The oscillation output waveform of a fixed frequency is input by using the power supply unit 10 which receives the input AC power and rectifies and outputs a predetermined DC power voltage Vcc1 (Vcc2), and an input AC power voltage converted by the power supply unit 10. Oscillator 20 for supplying, a temperature sensing unit 50 for sensing a temperature of the room to provide a predetermined temperature signal, and a remote controller for "on" or "off" the power of the room air conditioner or select a predetermined function A micro that controls the unit 70, the oscillation waveform of the oscillation unit 20, the temperature signal of the temperature sensing unit 50 and the control signal of the remote control unit 70 to perform a predetermined function selected by the operator The computer unit 30, the drive unit 40 for applying or blocking an input power supply voltage by a relay operation under the control of the micro computer unit 30, and the room temperature state under the control of the micro computer unit 30. And cooling operation phase Room air conditioner remote control circuit, characterized in that consisting of a display circuit for displaying a light.