KR900004922Y1 - Control circuit for air conditioner - Google Patents

Abstract

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Description

Cooling control device and stabilization control circuit of air conditioning equipment

1 is a block diagram according to the present invention.

2 is a detailed circuit diagram of FIG. 1 according to the present invention.

* Explanation of symbols for main parts of the drawings

10: constant voltage circuit 20: operation stop control unit

30: Function holding part during momentary power failure 40: Room temperature control part

50: compressor operation delay unit 60: operation time processing unit

70: remote control unit 80: combination processing unit

90: load control unit 100: load AC power supply

21: operation, stop processing unit 22: operation lamp oscillation unit

71: operation, stop selector 72: temperature setting unit

73: air flow selector 74: operation time setting unit

75: direction selector 91: compressor control unit

92: fan motor control unit 93: directional motor control unit

The present invention relates to a cooling control and stabilization control circuit of a cooling air conditioner, and in particular, a functionalized integrated circuit (IC) combination of the functionalization of the cooling device control and stabilization control of the cooling air conditioner to overcome the unstable control of the large size It is about a circuit.

Conventionally, the cooling control of the cooling air conditioner is mainly controlled by mechanical control, and some of them are controlled by electronic circuits, but only a simple function of controlling the compressor, which is a simple indoor temperature control, has a circuit problem to be applied to a large-capacity air conditioner. Many, multifunction control was not possible.

That is, as the cooling capacity is increased, electronic control does not solve various noises generated during compressor and motor driving, and thus it is impossible to apply from low capacity to large capacity.

Therefore, the present invention seeks to control and use convenience by making the air conditioner multifunctional in a simple function in order to solve the conventional problems, and use the stabilization circuit for various noises generated during the operation of the compressor and the motor during large-capacity control. The purpose is to provide a circuit that can smoothly perform cooling control from low capacity to large capacity by stabilizing instability caused by increasing capability.

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

1 is a block diagram according to the present invention, the instantaneous power failure function to maintain the circuit function for a certain time when the AC power supply to the following terminals to supply AC power to each terminal and AC power is momentarily interrupted Each output of the holding unit 30 is applied to the combination processing unit 80, and the operation and stop selection unit 71 of the remote control unit 70 is configured to select the operation by the operation S / W so that the operation stop control unit ( 20), the air temperature setting unit 72 configured to control the room temperature selection is connected to the room temperature control unit 40, and the air volume selection unit 73 for selecting the amount of cold air discharge is the room temperature control unit 40 and the fan (FAN) The means for connecting to the motor control unit 92 and the operation time setting unit 74 for selecting the operation time means for receiving a signal input from the operation and stop control unit 20 and connecting to the operation time processing unit 60 according to the signal. And, the operation time processing unit 60 for processing the set operation time Operation and stop consisting of means for connecting to the summation processing unit 80, operation for selecting the operation and stop, operation stop oscillation unit 22 and the operation lamp oscillation unit 22 for displaying the operation lamp LAMP in the initial power state. Means for connecting the operation time setting unit 74, the combination processing unit 80, the fan motor control unit 92, the directional motor control unit 93, and the temperature setting unit 72. Means for connecting the room temperature control unit 40 and the combination processing unit 80 to a room temperature control unit 40 for processing room temperature setting and room temperature sensing and processing and controlling the air volume selection content of the air volume selection unit 73; Means for connecting the output of the compressor operation delay unit 50 to the combination processing unit 80 to delay the compressor operation for a predetermined time without operating the compressor immediately even when the room temperature is high; Control state of the operation and stop control unit 20 and control state and compressor of the room temperature control unit 40 Combination processing unit 80 and combination processing unit control state for controlling the compressor 91 of the load control unit 90 by combining the predetermined time delay state and the operating time setting state of the operation delay unit 50 Fan motor control unit for controlling the amount of cold air in accordance with the control state of the compressor 91 and the air flow selector 73 of the remote control unit 70 to receive and control the input ( 92, a load control unit 90 composed of a direction motor control unit 93 for controlling the direction of cold air discharge according to the selection of the direction selection unit 75 of the operation and stop control unit 20 and the remote control unit 70, Drive in accordance with the signal of the fan (FM) and the directional motor control unit 93 driven in accordance with the signal of the compressor (CM) and the fan motor control unit 92 driven according to the signal of the compressor control unit 91. The swing motor SM is configured as shown in FIG.

2 is an embodiment of the present invention, the constant voltage circuit unit 10 connects the diode D1 to the shaping circuit BR1 configured as the secondary side bridge of the transformer TR1 and connects the capacitor C1 to the regulator ( Connect to input of REG1) and ground terminal 2 of regulator (REG1), and connect condenser (C2) to terminal 3 to use as DC power supply VCC2.

The operation / stop control unit 20 operates the JK flip-flop FF1 (FF2), the transistors Q6-Q9, the diodes D7-D10, to operate and stop each air conditioner according to the selection of the remote controller 70. Zener diodes ZD1 (ZD2), capacitors C10-C17, resistors R21-R44 and the like of the comparator OP1 are configured.

In case of momentary power failure, the function maintaining unit 30 keeps the diode D2, D3, capacitor C3, C4 transistor Q1, Q2, and resistance so that the cooling operation continues even if the AC power supplied is momentarily cut off. It consists of (R1-R3).

The room temperature control unit 40 is composed of a sensor element (TH) for sensing an indoor temperature, a comparator (OP2) for comparing with a reference voltage, an initial malfunction prevention circuit, and the like.

The compressor operation delay unit 50 is composed of a comparator OP3 and OP4 and a capacitor C6-C8, a diode and a resistor.

The operation time processor 60 is composed of a timer IC4, a zener diode ZD3 (ZD4) transistors Q10, Q11, Q17, diodes D11-D14, capacitor resistors, and the like.

The combination processing section 80 is composed of an AND gate AN1 (AN2) and resistors R18-R20 backflow prevention diode D6, a relay RY1, a transistor Q4, and the like.

The load control unit 90 is composed of a relay RY2-RY5, a transistor Q12-Q16, a resistor R51-R60, a diode D14-D18, and the like that drive the relay. Drive pure light.

The circuit operation of the present invention having the configuration as described above will be described.

When AC power is initially applied, a differential pulse is generated through the regulator REG1 through the capacitor C15 and the resistor R19 and applied to the clear terminal CL of the flip-flop FF2. The output Q is in a "low" state, and a voltage is applied in a reverse direction to the diode D10, and thus a short circuit occurs. The comparator OP4 is referenced to the non-inverting terminal (+) by the voltage divider of the resistors R31, R34, and R35. The voltage is set, the inverting terminal (-) is charged to the capacitor (C16) by the resistors (R32, R33), the charging voltage is discharged through the resistor (R30), the reference of the non-inverting terminal (+) Compared to the voltage, its output is applied to the base of transistor Q7 via resistor R37 and zener diode ZD2 while repeating the "high" and "low" states, so that the collector is in the "low" and "high" states. While repeating the operation lamp (LED1) of the remote control unit 70 blinks while the initial power is displayed in the "on" state, flip-flop ( The output Q of the FF2 is "high " and is applied to the clear terminal CL of the flip-flop FF1 via the diode D9 to reset the flip-flop FF1 so that the output Q is " high " A low " state turns the base of transistor Q8 through resistor R10, causing the collector to be " high " state, thereby turning off transistor Q9 so that power supply voltage VCC2 is not applied.

Therefore, since the power supply voltage VCC2 of the relays RY1, RY2, RY3, RY4, and RY5 is not supplied, it is not driven regardless of the remote control unit 70.

The comparator OP2 sets the temperature by selecting the resistors R67-R75 by the temperature setting switch SW4 of the remote controller 70, and a voltage corresponding to the set temperature is applied to the non-inverting terminal (+). Inverting terminal (-) is resistance (R6, R7) and room temperature sensor (TH) that senses the room temperature. (The room temperature sensor is a thermistor with negative characteristics.The resistance decreases when the room temperature increases, and the resistance increases when the temperature drops. When the divided voltage is applied and its output is higher than the temperature set by the temperature setting switch SW4, the detected temperature of the room temperature sensor TH is higher than the temperature set by the temperature setting switch SW4. If low, the output will go "low".

If the room temperature detected by the room temperature sensor TH is higher than the set temperature of the temperature setting switch SW4, the output of the comparator OP2 becomes "high" and the inverting terminal (-) of the comparator OP3 passes through the resistor R8. ), The non-inverting terminal (+) is divided by the resistors R9 and R10, and the voltage of the inverting terminal (-) is "high", so the output is "low" and its signal Since the transistor Q3 cannot be turned on through the resistor R11, the capacitor C7, and the resistors R12 and R13, the voltage of the capacitor C9 is not initially charged, so the power supply VCC1 is the resistor R15. Through the capacitor C9, the capacitor C9 starts to be charged, and the voltage is set by the divided voltage of the resistors R16 and R17 to the inverting terminal (-) of the comparator OP4 and the charging voltage of the capacitor C7 is set to the inverting terminal (-). If it is lower than the voltage, the output is low and if it is higher than the voltage of the inverting terminal (-), the output becomes "high" and the capacitor C7 Pressure inversion terminal (-) is output until it reaches the voltage is to be delayed until the "Hi" state from the "low" state.

When the output of the comparator OP4 is in the "low" state, it is applied to one input of the AND gate AN1, and the output is in the "low" state regardless of the other input, so its output is one input of the AND gate AN2. Regardless of another input, the output becomes a "low" state, so that its low signal is applied to the base of the transistor Q4 through the resistor R18 and turned off to cool the remote controller 70 connected to the collector. Since lamp LED1 is not turned on and relay RY1 is not supplied with driving power, compressor C is not driven.

In addition, when the output of the comparator OP4 is in the "high" state, it is applied to one input of the AND gate AN1, and the other input is the "high" state because the output of the comparator OP2 is in the "high" state. Since the state is "high", the output is "high" and is applied to one input of the AND gate (AN2), but another input is connected to the collector of transistor Q7 so that the power supply voltage (VCC2) is not supplied. Since its output is in the "low" state, it is applied to the base of the transistor Q4 through the resistor R18 and turned off so that the cooling lamp LED1 of the remote control unit 70 connected to the collector is not turned on and the relay RY1 is not turned on. Since the driving power is not supplied, the compressor C is not driven.

When the operation switch SW1 of the remote control unit 70 is pressed, the state “high” is maintained during the pressing time, so that the “high” state passes through the diode D7 and the preset terminal PR of the flip-flop FF2. The clear terminal CL is set to "low" state, so that the output Q becomes "high" state, and is charged to the capacitor C16 through the resistor R32 via the diode D10, and the comparator OP3. Since its voltage is higher than the voltage set at the non-inverting terminal (+), its output becomes "low" and stops charging and discharging. ) Is applied to the clear terminal CL of the flip-flop FF1 through the diode D9. On the other hand, the high state by the operation switch SW1 is applied to the base of the transistor Q5 via the resistors R21 and R22 and turned on, and its collector is turned low to pass through the zener diode AD1 of the resistor R24. It is applied to the base of transistor Q6 and turned on, and its collector is " high " and is applied to clock terminal CK of flip-flop FF1 via diode D8. The output A of the flip-flop FF1 becomes " high " due to the clock signal applied because the output is inverted only when the output is inverted, and the signal is applied to the base of the transistor Q8 via the resistor R10. It is turned on and its collector is turned low so that the transistor Q9 is turned on so that the power supply voltage VCC2 becomes high, and the voltage is supplied to the transistor Q7 through the resistor R36 and the zener diode ZD1. Is applied to the base and turned on, Is the state right lamp is lit, the operation (LED2) of the remote control unit 70 to display the operating state.

Since the output of the comparator OP2 is "high", the output of the comparator OP2 is applied to one input of the AND gate AN1, and the output of the comparator OP4 is "high" after a predetermined time has passed since the initial power is turned on. Since it is applied to another input of the AND gate AN2, since both inputs of the ANDAN1 are high, the output becomes high and is applied to one input of the ANGAN AN2. VCC2) is supplied to the power terminal of timing IC4 to start timer operation. At this time, if the time is set or continuous according to the selection of resistors R61-R66 by the operation time setting switch SW3, its output (PIN8) ) Is maintained in a "high" state, so if it is set continuously, the high state is applied through the resistor R14 by the continuous positioning of the remote control unit 70 and is applied to the base of the transistor Q10 via the diode D12. At this time Irrespective of the output PIN8 of the timer IC4 connected to the one input diode D11, it is turned on and its collector goes low to turn off the transistor Q17, thereby bringing the collector to a "high" state.

Therefore, since both inputs of the AND gate AN2 are in the "high" state, the output is in the "high" state, and the transistor Q4 is turned on through the resistor R19 to operate the compressor driving relay RY1 to operate the compressor C. At this time, if the low wind is set by the air flow selection switch SW2, the power supply voltage VCC1 is turned on via the resistor R53, and the transistor Q13 is turned on, and the relay RY3 is driven to operate as a heavy wind. When the power supply voltage VCC1 is turned on via the resistor R53, the transistor Q13 is turned on and the relay RY3 is driven to operate in heavy wind. When the strong wind is set, the power supply voltage VCC1 is passed through the resistor R55. The transistor Q14 is turned on and the relay RY4 is driven to operate in a strong wind. The fan motor FM is individually selected by the wind select switch SW2.

Therefore, when the compressor C is driven and the room temperature drops, the temperature detected by the room temperature sensor TH, which senses the room temperature rather than the temperature set by the ON setting switch SW4 of the non-inverting terminal (+) of the comparator OP2. When is lowered, because the voltage of (-) is high, its output becomes "low" and the output is applied to one input of the AND gate AN1, respectively, and also through the resistor R8, the inverting terminal of the comparator OP3 (- ), But because the set voltage of the non-inverting terminal (+) is high, the output becomes " high ", and a differential pulse is generated through the resistor R17, the capacitor C7, and the resistors R12, R13, and the transistor Q3. ) Is turned on during the differential pulse time to instantaneously discharge the charged voltage of the capacitor C9 connected to its collector, and after the discharge is over, the output is "low" after charging the capacitor C8 through the resistor R15 for a predetermined time. "State" from "high" to It is applied to another input of AN1), but the output of the AND gate AN1 becomes "low" because the output of the comparator OP2 is "low", and a signal is applied to one input of the AND gate AN2. Regardless of the other input, the output becomes " low " state, which turns off the transistor RY1 by turning off the transistor Q4.

Therefore, the compressor C stops the operation, the cooling lamp LED1 of the remote control unit 70 goes out, and the temperature of the room increases.

If the room temperature increases and the room temperature is higher than the temperature set by the temperature setting switch SW4 of the remote controller 70, the voltage of the non-inverting terminal (+) of the comparator OP2 is greater than the voltage of the inverting terminal (-). Since the output becomes high, it is applied to one input of the AND gate AN1 and is applied to the inverting terminal (-) of the comparator OP3 through the resistor R8, and the non-inverting terminal (+) Since it is higher than the voltage, the output is in a "low" state, connected to the base of transistor Q3 via resistors R17, capacitors C7 and resistors R12, R13, turned off and charged voltage of capacitor C9. Since the voltage is applied to the non-inverting terminal (+) of the comparator OP4 and higher than the set voltage of the inverting terminal (-), its output becomes "high" and is applied to another input of the AND gate AN1. Since both inputs are "high", the output is "high" and one input of the gate (AN2) When one input is set to time setting in the continuous position by the time setting switch SW3 of the timer IC4, its output is initially high and goes through the diode D11 through the resistor R48 and the zener diode. The transistor D10 is connected to the base via the transistor ZD3, and the diode D12 is operated as a timer with time setting because the signal of the reset terminal PIN6 of the timer IC4 becomes " low ".

Therefore, the transistor of the transistor Q10 becomes the "low" state, the low state is applied to the base of the transistor Q17, and the collector thereof becomes the high state and is applied to one input of the AND gate AN2. Since all are high, the transistor Q4 is turned on via the resistor R18 to drive the relay RY1, and the cooling lamp LED1 of the remote controller 70 is turned on and turned on so that the compressor C is operated to cool. Drive.

When the time set by the time setting switch SW3 of the remote controller 70 of the timer IC4 reaches the time set, the output PIN8 is turned low and its signal is passed through the resistor R50 and the zener diode ZD4. Q11) When applied to the base and turned off from the turn-on state, its collector becomes " high " and the transistor Q5 is turned on through the resistor R21 through the diode D4 and its collector becomes " low " (R24), the transistor Q6 is turned on via the zener diode ZD1, so that the high state is applied to the clock terminal CK of the flip-flop FF1 via the diode D8, and its output Q is low. Since the transistor Q8 is turned off via the resistor R40, the transistor Q9 is turned off so that the power supply voltage VCC2 is not supplied. Thus, the transistor Q7 is turned off via the resistor R36, thereby causing the remote controller 70 to turn off. Operation lamp (LED2) turns off The stops and also stops the driving of all of the load.

Then, during operation, the wind quantity selection switch SW2 of the remote control unit 70 is selected as the song pull, and the transistor Q14 is turned on via the resistor R58 to operate the relay RY4 to perform a blowing operation with strong winds, Since the voltage VCC1 is applied through the diode D4, regardless of the room temperature, regardless of the temperature set by the temperature setting switch SW4, the inverting terminal (-) is higher than the voltage of the non-inverting terminal (+) of the comparator OP2. As the voltage of is increased, its output becomes "low" and is applied to one input of the AND gate AN1. Therefore, the output is "low" and applied to one input of the AND gate AN2 regardless of another input. Regardless of the output of the timer IC4, the output becomes " low " and by turning off the transistor Q4, the relay RY1 is turned off to stop the operation of the compressor C and to cool the remote controller 70. The lamp (LED1) is also turned off to blow Only performed fully functional.

When the air volume selection switch SW2 is switched from the position of the blower to the strong, medium, or weak wind, it is operated in relation to the temperature condition.

If a momentary power interruption occurs during operation, the voltage charged to the capacitor via the diode D2 discharges through the resistor R1, and the discharge voltage turns off the transistor Q1 so that the collector becomes high and the transistor Q2 is turned off. As it is turned on, a low state is applied to the inverting terminal (-) of the comparator OP3 and is lower than the set voltage of the non-inverting terminal (+). Therefore, the output becomes high and the differential pulse is passed through the resistor R11 and the capacitor C7. As the transistor Q3 is turned on, the voltage charged in the capacitor C9 is discharged through the collector and charged in the capacitor C9 through the resistor R15. At this time, the output remains "low" until the charging voltage reaches the voltage set in the inverting terminal (-) of the comparator OP4. Then, the output is changed to the "high" state. Output is low regardless of another input, and its output is applied low to one input of AND gate (AN2), so another input is output regardless of timer (IC4) output. Becomes low, turning off the transistor Q4 to turn off the relay RY1, so that the operation of the compressor C is stopped, and the cooling lamp LED1 of the remote control unit 70 is turned off.

When the momentary power failure recovers, the output of the comparator OP4 becomes high after a certain delay time, so that it is applied to one input of the AND gate AN1, and the other input is applied by the output of the comparator OP2. The output goes from high to low and is applied to one input of AND gate AN2, and the other input turns transistor Q4 on by the high and low states along with the signal from the collector of transistor Q17. , Turn off cooling operation.

In addition, when switching the swing switching selector switch SW5 to swing during operation, the power supply voltage VCC1 is turned on through the resistor R59, and the transistor Q16 is turned on to operate the relay RY5 to supply a wide wind direction.

Therefore, in case of sudden power failure or sudden temperature change during blowing, the compressor C is controlled after being delayed for a certain time, thereby preventing overload and performing a stable operation.

In addition, timer operation can be performed, and the capacitor C19-22 is for absorbing noise applied from the outside and noise generated when driving the motor.

It also contains a brain surge device (DSA) to absorb brain surges.

The operation effect of the present invention, which operates as described above, can control the cooling control from the low capacity to the large capacity air conditioner at will by the user's choice, and removes various noises generated during the operation of the compressor and each motor during the large capacity control. It has the advantage of stabilizing the operation.

Claims (1)

A means for applying the output of the function holding unit 30 to the combination processing unit 80 to control the momentary power failure to maintain the circuit function for a predetermined time when the power supply is momentarily interrupted, the operation stop selecting unit 71, Operation and stop control unit 20 for controlling according to each output signal of the remote control unit 70 combined with the temperature setting unit 72, the air flow selector 73, the operation time setting unit 74, the direction selection unit 75 ) The combination processing unit 80 controls the load control unit 90 by cooling the room temperature control unit 40, the compressor operation delay unit 50, and the combination processing unit 80 described above with the respective signals of the operation time processing unit 60. Cooling control device and stabilization circuit of the air conditioning equipment, characterized in that the control box.