KR950010101Y1 - A motor output regulation circuit in aircleaner - Google Patents

Abstract

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Description

Motor output control circuit of air cleaner

1 is a detailed view of the motor output control circuit of the present invention.

Figure 2 is a diagram showing the microcomputer output state for each control step of the motor output control circuit of the present invention.

3 is an output waveform diagram of each part of the inventive motor output control circuit.

* Explanation of symbols for main parts of the drawings

A: Interrupt signal generator B: Micom

C: Integral circuit d: Comparative voltage generation

E: comparator bar: motor driving circuit

C1 ~ C3: Capacitor D1, D2: Diode

M: Motor R1 ~ R12: Resistance

TR1: Transistor

The present invention relates to a motor output control circuit of an air purifier, and more particularly, to an air purifier in which a motor driven to suck indoor polluted air can be controlled by a differential signal using a micom output signal and a comparator. It relates to a motor output control circuit.

The conventional air purifier motor output control circuit connects each motor output drive circuit to a pre-programmed micom and inputs a signal for the motor output to the micom, and the microcomputer controls it according to the pre-programmed state. Is applied to each of the motor output drive circuits to control the output of the motor. Therefore, the complexity of the manufacturability caused by this complicated circuit configuration reduces productivity, decreases the reliability of the machine and increases the number of parts. It has a problem that increases the production cost due to.

Therefore, an object of the present invention is to provide a motor output control circuit that can control the output of the motor with a simpler circuit configuration, in order to realize the above object the present invention is to control the voltage input from the input power terminal interrupt signal Checks the interrupt signal input from the interrupt signal generator, generates a reference pulse voltage by finding the zero point of the input power, and outputs a controlled signal for the input output selection signal in advance. Motor output by configuring a comparator that compares the programmed microcomputer with the signals output to the microcomputer and outputs a secondary signal, and a motor driving circuit configured to drive the motor by supplying input power to the motor as much as the output from the comparator Characterized in that it can be adjusted.

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

As shown in FIG. 1, the diode D1 (D2) resistor R1 receives and receives an input voltage from the secondary side of the transformer TRANS1 of the input power supply terminal AC to rectify and control the onion to generate and generate an interrupt signal. After receiving and checking the interrupt signal generator (R2) consisting of (R2) (R3) and transistor (TR1) and the interrupt signal generator (A), find the zero point of input power. The microcomputer preprogrammed to output a reference pulse through the output terminal out0, and output the motor output selection signal through the corresponding output terminals out1 to out4, and the output of the microcom Integrating circuit (C) consisting of a resistor (R4) capacitor (C1) for integrating the reference pulse output from the terminal (out0) into a predetermined pulse to produce a reference output signal, and the output terminals (out1 to out4) of the microcomputer (B). Comparative voltage by dividing output signal output from Comparing the reference voltage and the comparison voltage input from each of the comparison voltage generator (D) consisting of distribution resistors (R5 ~ R9) to generate a, and the integration circuit (C) and the comparison voltage generator (D) by 2 A comparator (E) for outputting a difference signal voltage, and a capacitor (C2) (C3) resistors (R11) to ( R12) It consists of a motor drive circuit (bar) composed of TRAX (TRAZC).

Referring to the operation and effect of the subject innovation made up as described above are as follows.

First, power is supplied to the air cleaner, and then the air cleaner is adjusted to strong, medium, or weak according to the indoor air pollution. In this case, the strong, medium, and weak control of the air cleaner is to control the motor driving axial force. The motor output selection switch (not shown) selects the drive output of the motor. Prior to this, if power is first applied to the circuit, the voltage input from the input power supply terminal (AC) to the interrupt terminal (INT) of the microcomputer (B). The interrupt signal generating unit (AC) inputs an interrupt signal as shown in FIG. 3A, and the input interrupt signal is inputted by the preprogrammed state of the microcomputer (B). Finding the zero point of AC) and outputting the type b as shown in FIG. 3b through its output terminal out0, and at the output terminals out1 to out4 as shown in FIG. A pulse thereby axial force.

On the other hand, the waveform output from the output terminal (out0) of the microcomputer (b) is integrated by the resistor R4 and the capacitor C1 of the integrating circuit (C) to output a waveform as shown in FIG. E is inputted to the inverting terminal (-) of E) to be the reference voltage of the comparator E.

Subsequently, the drive output of the motor is selected to adjust the output of the motor. For example, when "weak" is selected, the microcomputer (b) outputs a control signal for selecting "weak" by controlling according to a pre-programmed state. Since the first stage is selected, only one output terminal out1 of the output terminals out1 to out4 of the microcomputer (b) is a low signal and the remaining output terminals out2 to out4 are high signals. D) In the non-inverting terminal (+) of the comparator (E), the power supply Vcc flows to the resistor R5 through the resistor R9. Is applied.

Therefore, the comparator (e) compares the voltage applied to the inverting terminal (-) with the voltage applied to the non-inverting terminal (+) and outputs the comparative charging voltage as shown in FIG. 3d. The triac TH of the motor driving circuit bar is driven by the time, so that the AC is supplied to the motor M as shown in FIG. 3E, and the motor M is weakly driven.

On the other hand, if "strong" is selected, the microcomputer (b) selects the third output terminal (out3). Therefore, the comparator (e) performs the comparison difference voltage as shown in FIG. And the triac TH of the motor driving circuit bar as much as the time for the secondary voltage, so that the AC voltage is supplied to the motor M as shown in FIG. Will be.

As described above, the present invention controls the output of the motor by supplying AC power to the motor for a time for the differential signal using the system signal and the comparator of the motor driven to suck indoor polluted air. In addition, the circuit configuration is simplified, and the simple circuit configuration can greatly improve productivity and reliability of the device, and also provide economic benefits due to the reduced number of components.

Claims (1)

In the motor output control circuit of the air purifier, an interrupt signal generator (A) and an interrupt signal and motor output of the interrupt signal generator (A) for generating and generating a voltage from an input power supply terminal (AC) as an interrupt signal. A comparison voltage generator for receiving a selection signal and outputting a reference voltage and a comparison voltage, an integrated circuit (C) for distributing a reference voltage output from the micom (B) and a comparison voltage; ) And a comparator (e) consisting of resistors (R5 to R9) for generating secondary signals by comparing the reference voltage of the integrating circuit (C) with the comparison voltage of the comparison voltage generator (D). It consists of a motor driving circuit (bar) consisting of a capacitor (C2) (C3), a resistor (R11) (R12) and a triac (TRIAC) to drive the motor (M) for a second time signal. Of air cleaner Emitter output control circuit.