KR20080002139A - Automatic control device in case of air conditioning motor fire - Google Patents

Abstract

An automatic control apparatus of a motor for air conditioning system in fire is provided to allow preventing spreading of fire efficiently by controlling the motor by signals of heat detecting sensor in state that interlocking with air-conditioning system is interrupted. An automatic control apparatus of a motor for air conditioning system in fire comprises: a power supply part(1) to supply DC12V of electric power for operation; a controller(2) to control electric power supplied to the motor depending on the results of internal heat detecting sensor; a motor driving switch part(3) to enable DC15V of electric power to be amplified by 2 transistors(TR1,TR2); a sensor input part(4) including a shifting sensor(SW2) to select a resistance among 280, 130, and 72 deg.C; a motor driving part to supply electric power to the first contact point(P1) of a relay(RY1); and an overloading protecting part(6) to permit a reset signal selectively to the controller through a transistor and a constant voltage diode and a light emitting diode of a photo coupler and a photo transistor.

Description

Automatic control device in case of fire of air-conditioning motor {omitted}

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

2 is a circuit diagram showing a configuration of the present invention.

Explanation of symbols on the main parts of the drawings

1: voltage supply unit 2: controller

3: motor drive switch part 4: sensor input part

5: motor drive part 6: overload protection part

7: Start / Restore Trigger

The present invention relates to an automatic control device for a fire of an air conditioning motor, and in detail, when a fire does not occur, interlocked with an air purification system to perform a function of purifying the air by operating the motor normally, When a fire occurs, the motor is controlled by the signal of the heat sensor in the state of being disconnected from the air purifying system, thereby preventing smoke or flame from moving in case of fire and effectively preventing fire from spreading. It is about automatic control device in case of motor fire.

In general, an air purifier has been developed to filter air or dust by removing dust and dirt from the air.

The air purifier is configured to pass through a filter to filter the fine dust and the like by passing through the filter, and to perform the air circulation process for supplying the purified air to the room.

In recent years, the use of indoor equipment and building finishing materials have been used in a variety of ways. As a result, the concentration of harmful substances contained in the indoor space has increased, causing temporary discomfort to occupants. It is causing.

Hazardous substances can vary depending on the environment of the indoor space. Generally, dust, tobacco smoke, odors, mold, insecticides, total volatile organic compounds (TVOC), formaldehyde (HCHO), etc. It is emerging as a new harmful substance that worsens.

Existing air purifiers introduce a method of adding a ventilation function in addition to an air purifying function that filters dust contained in the circulating air by using a filter, but can simply perform an air purifying function or a ventilation function and contaminate indoor space. The condition was not recognized and the air purifying function or the ventilation function could not be executed automatically.

Although the occupants of the indoor space can set the ventilation or air purifying operation, the occupants themselves cannot perform the air purifying and ventilating operations because they have very low and inaccurate detection of pollutants and harmful substances contained in the indoor space. Difficult to implement in a timely manner

In addition, if necessary, the air purifying operation and the ventilation operation may occur in parallel, and an operation for accurately recognizing and executing such a case is required.

Therefore, there is a demand for a system that properly performs ventilation, air purification, ventilation, and air purification according to the pollution state of the indoor space.

Accordingly, Patent Application No. 10-2004-0007042 dated February 3, 2004 (Air circulation system and its control method) was proposed.

Indoor unit;

Outdoor unit;

A pollutant detection sensor for detecting a concentration of a pollutant contained in the indoor air;

Hazardous substance detection sensor for detecting the concentration of harmful substances contained in the indoor air;

A control unit for setting the operation mode of the system according to the concentration of the pollutant and the concentration of the hazardous substance sensed by the sensors and controlling the operation of the indoor unit and the outdoor unit according to the set operation mode. It was configured to include.

In addition, the operation mode includes a ventilation operation, an air purification operation, a ventilation and an air purification operation, and the operation setting information includes a first upper limit and a first lower limit for the pollutant, and a second upper limit and a second for the harmful substance. And a lower limit, wherein the controller compares the concentration of the pollutant detected by the sensor with the first upper limit and the first lower limit, and the concentration of the hazardous substances detected by the sensor and the second upper limit and the second lower limit. By comparison, the operating mode of the system was set.

However, while the air circulation system and the control method as described above have the advantage of circulating the air inside while performing the function of air conditioning, even if a fire occurs while performing the air conditioning function, There was a problem that the fire is spread by moving the flame with smoke because it circulates.

Accordingly, the present invention has been made to solve the conventional problems as described above, when the fire does not occur, the motor is operated while operating in conjunction with the air purification system to perform the function of purifying the air inside, the fire Air conditioner motor that prevents smoke or flame from moving in the event of fire by efficiently controlling the motor by the signal of the heat sensor when the air purifying system is disconnected when the To provide automatic control device in case of fire.

Automatic control device in case of fire of the air conditioning motor of the present invention for achieving the above object,

AC power supplied through the terminal from outside to supply DC12V operating power for operation through the voltage supply unit consisting of bridge diode, thyristor and constant voltage IC,

In the controller supplied with the operating power, the power supplied to the motor is controlled by the user's option and the detection result of the internal heat sensor.

In the motor driving switch unit which receives the control signal through the output terminal of the controller through the light emitting diode of the photocoupler, the power of the DC15V is amplified by two transistors through the constant voltage diode and supplied to the motor as the phototransistor is turned on. ,

In the sensor input unit having a switching switch for selecting the resistance of 280 ° C, 130 ° C and 72 ° C for dehumidification via the constant voltage IC, the DC24V is compared with a reference voltage in a comparator and then drives a relay through the first contact part. DC24V outputs a drive signal for air conditioning or switches to the dehumidification mode through the second contact portion,

In the motor driving unit for supplying power from the motor driving switch unit to the first contact point of the relay, when the signal according to the driving of the motor is applied through the terminal and the contact switch, the relay is driven by the transistor while turning on the thyristor. At the same time, the drive signal is applied to the motor by driving a relay while recognizing whether power from the outside is supplied to the motor.

In the overload protection unit for detecting the power applied from the motor driving switch unit to the motor driving unit through a variable resistor, the light emitting diode and the phototransistor of the photocoupler are turned on through a transistor and a constant voltage diode to apply a reset signal to the controller. Let's do it,

When the power is applied through the diode according to the state in which the sensor input unit is switched to the de-energization mode, the gate signal is applied to the thyristors of the power supply unit. It is characterized in that it comprises a start / recovery trigger unit for applying a trigger signal to the controller to be turned on.

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

1 and 2 show the configuration of the automatic control device when the fire of the air conditioning motor according to the present invention,

AC power supplied from the outside via the terminal (CON1) is supplied via the voltage supply (1) consisting of the bridge diode (BD), the thyristor (SCR1) and the constant voltage IC (IC1) to supply the operating power of DC12V for operation ,

In the controller 2 receiving the operation power, the power supplied to the motor is controlled by the user's option and the detection result of the internal heat sensor.

In the motor driving switch unit 3 that receives the control signal through the output terminal Q of the controller 2 through the light emitting diode LED1 of the photocoupler PC1, the phototransistor PT1 is turned on so that the constant voltage diode ( The power of DC15V is amplified by two transistors TR1 (TR2) via ZD1) and supplied to the motor,

In the sensor input unit 4 having the switch 24 for selecting the resistors corresponding to 280 ° C., 130 ° C. and 72 ° C. for dehumidification via the constant voltage IC IC 2, the switching switch SW 2 is provided. The first contact point is driven while driving the relay RY3 according to a value obtained by comparing the reference voltage, which is the divided voltage of the two resistors R1 and R2, with the resistance voltage of the resistor and the thermal sensor S1 and the reference voltage which is the divided voltage by the two resistors R1 and R2. DC24V outputs the drive signal for air conditioning through the unit, or switches to the dehumidification mode through the second contact unit, and is input to the next start / recovery trigger unit 7 through the output side OUT through the input side IN. and,

In the motor driving unit 5 in which the power from the motor driving switch unit 3 is applied to the first contact point P1 of the relay RY1, a signal according to the driving of the motor is supplied to the terminal CON2 and the contact switch SW1. When it is applied through, the transistor RY2 is driven by the transistor TR3 while turning on the thyristor SCR2, so that it is possible to recognize whether AC power from the outside is being supplied to the motor M. The drive signal Drive drives the relay RY1 so that the power from the motor drive switch unit 3 is applied to the motor M,

In the overload protection unit 6 which detects the power applied from the motor driving switch unit 3 to the motor driving unit 5 through the variable resistor VR1, the photocoupler is passed through the transistor TR4 and the constant voltage diode ZD2. The light emitting diode LED2 and the phototransistor PT2 of the PC2 are turned on to apply the reset signal to the controller 2 above.

In the start / recovery trigger section 7 in which power is applied through the diode D1 in accordance with the state in which the sensor input section 4 is switched to the defrosting mode, the gate of the thyristor SCR1 of the power supply section 1 is gated. At the same time, the controller 2 turns on the light emitting diode LED3 and the phototransistor PT3 of the photocoupler PC3 in a vibrator circuit including transistors TR5, TR6, TR7, and TR8. It is configured to apply trigger signal to.

The input side IN and the output side OUT connected to both ends of the DC24V supplied to the first contact portion of the sensor input portion 4 and the second contact portion are jumpers J1 (J2) in order to select the user to switch to the defrosting mode. ) Is allowed only when short-circuit) so that the user can select only the function of air conditioning or the function of air conditioning and ventilation.

Automatic control device when the fire of the air conditioning motor of the present invention configured as described above,

When AC power is supplied from the outside through the terminal CON1, the voltage supply unit 1 consisting of the bridge diode BD, the thyristor SCR1, and the constant voltage IC IC1 supplies the operating power of DC12V for the internal operation. Do it.

The controller 2 receiving the operation power controls the power supplied to the motor according to the user's option and the detection result of the internal heat sensor.

When the control signal is output through the output terminal Q of the controller 2, the light emitting diode LED1 of the photocoupler PC1 emits light, and thus the phototransistor PT1 of the motor driving switch unit 3 is turned on. As it is turned on by the above light, the DC24V is amplified by the two transistors TR1 and TR2 to the power supply of DC15V while passing through the constant voltage diode ZD1 to be supplied to the motor.

The 24 VDC is a constant voltage IC (IC2), the sensor input unit 4 is provided with a switch (SW2) for selecting the resistance of 280 ℃, 130 ℃ and 72 ℃ for ventilation, the current temperature of the Doc 72 It is made to recognize the state which becomes more than 130 degreeC, or more than 130 degreeC, or 280 degreeC.

When the internal temperature of the duct reaches a temperature of 72 ° C., 130 ° C. and 280 ° C. set by the changeover switch SW2 of the sensor input unit 4, the resistance of the changeover switch SW2 and the division by the heat sensor S1 are divided. The relay RY3 is selectively driven by a value obtained by comparing the voltage with the reference voltage which is the divided voltage by the two resistors R1 and R2 and the comparator OP1.

At this time, since the jumper (J1) (J2) is short-circuited because the user wants to select the switching to the smoke control mode, DC24V is supplied to the first contact part of the sensor input part 4 while the input side ( When IN) and the output side (OUT) are connected and do not reach the set temperature, it operates in the air-conditioning mode and outputs a drive signal. When the temperature is reached, it performs a function of dehumidification.

In the motor driving unit 5 in which power from the motor driving switch unit 3 is applied to the first contact point P1 of the relay RY1, a signal according to the driving of the motor M is transmitted to the terminal CON2 and the contact switch. When applied via SW1, the drive signal Drive causes the relay RY2 to be driven while turning on the transistor TR3 while turning on the thyristor SCR2 so that AC power from the outside is supplied to the motor M. Makes it possible to recognize the state of supply.

At the same time, the drive signal Drive drives the relay RY1 so that the power from the motor drive switch unit 3 through the first contact is applied to the motor M so that the drive signal Drive operates only during air conditioning.

In the overload protection unit 6 which detects the power applied from the motor driving switch unit 3 to the motor driving unit 5 through the variable resistance VR1, when the power supply through the variable resistor VR1 is larger than the normal power supply. Only through the transistor TR4 and the constant voltage diode ZD2, the light emitting diode LED2 and the phototransistor PT2 of the photocoupler PC2 are turned on to apply the reset signal to the controller 2 from the overcurrent. Protect the inside.

In the start / recovery triggering unit 7 in which power through the input side IN and the output side OUT is applied through the diode D1 according to the state in which the sensor input unit 4 is switched to the defrosting mode, the power supply unit When the normal power supply is again applied from (1), the photocoupler PC3 is applied to the vibrator circuit composed of transistors TR5, TR6, TR7, and TR8 while simultaneously applying a gate signal to the above thyristor SCR1. The light emitting diode LED3 and the phototransistor PT3 are turned on to apply a trigger signal to the controller 2.

As described in detail above, when a fire does not occur by the automatic control device of the air conditioning motor according to the present invention, when the fire does not occur, the motor is operated normally while operating the motor to purify the air. However, when a fire occurs, the interlocking with the air purification system is stopped and the signal of the heat detection sensor coming in case of fire is controlled to control the operation of the motor.

The mounting position is to install the motor on the outer wall of the duct, while the heat sensor is installed on the inner wall of the duct to sense the temperature of the air flowing through the duct more quickly and accurately to control the motor.

In other words, the motor operates through the heat sensor installed in the duct even when the sensor (temperature sensor, heat sensor) in the building due to fire or abnormal signal that may occur in the air purification system.

It is therefore an air-conditioning system that can more safely and accurately protect human life and property from fires.

Claims (2)

AC power supplied from the outside through the terminal (CON1) to supply the operating power of DC12V via the voltage supply unit 1 consisting of the bridge diode (BD), the thyristors (SCR1) and the constant voltage IC (IC1), In the controller 2 receiving the operation power, the power supplied to the motor is controlled by the user's selection and the detection result of the internal heat sensor. The motor driving switch unit 3 that receives the control signal of the controller 2 through the light emitting diode LED1 of the photocoupler PC1 passes through a phototransistor PT1 and a constant voltage diode ZD1 to supply power of DC15V. To be amplified by transistors TR1 and TR2 and supplied to the motor, The sensor input unit 4 having a switch SW2 for selecting the resistances of 280 ° C, 130 ° C, and 72 ° C through the constant voltage IC (IC2) is a comparator ( After comparing in OP1), while driving the relay RY3, the drive signal Drive for air conditioning is output or converted to the smoke control mode. In the motor driving unit 5 in which the power from the motor driving switch unit 3 is applied to the first contact point P1 of the relay RY1, a signal according to the driving of the motor is supplied to the terminal CON2 and the contact switch SW1. When applied through the driving signal (Drive) drive the relay (RY1) while driving the relay (RY2) by the thyristors (SCR2) and the transistor (TR3) power from the motor drive switch unit (3) To the motor (M), In the overload protection unit 6 which detects the power applied from the motor driving switch unit 3 to the motor driving unit 5 with the variable resistor VR1, the transistor TR4, the constant voltage diode ZD2, and the photo coupler PC2. The reset signal is selectively applied to the controller 2 through the light emitting diode LED2 and the phototransistor PT2. In the start / recovery triggering unit 7 in which power through the thermal sensors S1 and S2 is applied through the diode D1 according to the state in which the sensor input unit 4 is switched to the defrosting mode, the power supply unit The light emitting diodes LED3 and phototransistors of the photocoupler PC3 are applied to a vibrator circuit composed of transistors TR5, TR6, TR7, and TR8 while simultaneously applying a gate signal to the thyristor SCR1 of (1). PT3) is turned on to apply a trigger signal to the controller (2) automatic control device in case of fire of the air conditioning motor. The method of claim 1, The sensor input unit, The relay RY3 is based on a comparison of the resistance of the changeover switch SW2 and the divided voltage by the thermal sensor S1 with the reference voltage which is the divided voltage by the two resistors R1 and R2 and the comparator OP1. While driving the DC24V outputs the drive signal (Drive) for the air conditioning through the first contact portion or by switching to the de-energization mode through the second contact portion to the next start / recovery trigger through the output side (OUT) through the input side (IN) (7) Automatic control device in case of fire of the air conditioning motor, characterized in that configured to be input to.

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