KR920006064Y1 - Sensing circuit for deoderant device - Google Patents

Abstract

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Description

Fan motor abnormality detection circuit of deodorizer

1 is a circuit diagram of the present invention.

(A)-(d) of FIG. 2 are operation waveform diagrams of each part of FIG.

3 is a fan motor driving circuit diagram of a conventional deodorizer.

* Explanation of symbols for main parts of the drawings

1: splitter 2,6: inverter

3: fan motor drive unit 4: comparator

5: reset part 7: oscillator

8 amplifier 9 ozone generator drive unit

10: ozone generator

The present invention relates to a fan motor abnormality detection circuit of deodorization. In particular, the fan motor is not driven by detecting an abnormality in the fan motor in the deodorizer with the ozone generator and blocking the operation of the entire system. Nevertheless, the ozone generator operates to detect the fan motor abnormalities of the deodorizer, which prevents corrosion of synthetic resins or metals caused by ozone from leaking out of the deodorizer stage, loss of eyesight of the user, and respiratory failure. It is about a circuit.

The fan motor driving circuit in the conventional deodorizer is connected in parallel with each other as shown in FIG. 3 so that the other side of the fan motor FM and the deodorizer 31 to which the AC voltage AC is applied to one side is discriminated. It is connected to the other side of the AC power supply (AC) via the varistor (B) and the priiak (Q ₁ ) of. The output terminal R of the microcomputer 32 has a configuration in which the output terminal R is connected to the gate of the triac Q ₁ through the buffer 33 and the resistor R ₁ .

First, when the microcomputer 32 in the deodorizer operates by applying the power source AC, a trigger pulse is applied to the gate of the triac Q ₁ as the 'high' signal is output from the output terminal R thereof. Since the evil Q ₁ is turned on to drive the deodorizer 31 in which the fan motor FM and the ozone generator are built, the odor contained in the air can be removed.

However, if an abnormality occurs in the fan motor (FM) during normal operation as described above, there is no device for detecting and controlling the fan motor (FM) in the deodorizer 31 even though the fan motor (FM) is not driven. As the ozone generator continues to operate, ozone continues to be generated, which not only corrodes the synthetic resin material and metals but also has a huge adverse effect on the human body.

In other words, once the triac Q ₁ is turned on, the deodorizer 31 connected in parallel with the fan motor FM is continuously driven even though the fan motor FM is in a state of failure because the AC power is not driven. Since it continues to occur in a state that does not leak out, there was a problem that not only the synthetic resin material and the metal material is corroded, but also reduces the user's vision and at the same time causes the respiratory failure.

The present invention has been devised to solve such a conventional problem, and it detects the abnormality of the fan motor through a comparator and resets the frequency divider which controls the ozone generation time immediately when an abnormality occurs, thus blocking the operation of the whole system. By doing so, it is possible to prevent the ozone generator from running even though an abnormality occurs in the fan motor, and to provide a fan motor abnormality detection circuit of the deodorizer which can prevent any damage caused by ozone in advance. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the constitution of the present invention comprises a divider 1 for dividing a predetermined clock signal to adjust the ozone generation time, an inverter 2 for inverting the output signal of the divider 1, And a fan motor driver 3 determining whether to drive the fan motor FM according to the output state of the inverter 2, and a predetermined voltage and distribution resistor R applied to the fan motor FM. _The comparator 4 which compares the reference voltage Vref by ₅ , R ₆ and detects the abnormality of the fan motor FM and the output of the inverter 2 are controlled by the divider 1. A reset unit 5 for outputting a reset signal to the inverter; an inverter 6 for inverting the output of the inverter 2 again; and an output of the inverter 6 when the output of the inverter 6 is 'high' Switching by an inverter 7 for outputting an oscillation frequency of the amplifier, an amplifier 8 for amplifying the output signal of the oscillator 7, and an output signal of the amplifier 8 By that the ozone generator drive unit (9) having hayeoseo wareul features that do drive the ozone generator (10) is smaller where the reference numeral _{R 1 -R 4, R 7 -R} 11 is resistance, Q ₁ -Q ₄ is a transistor , D ₁ is a diode, C ₁ is a capacitor, T ₁ is a transformer, and SW ₁ is a power switch.

The operation and effect of the inventive circuit constructed as described above will be described with reference to FIG. 2 (a)-(d).

First, when the power switch Sw ₁ is turned off, the output terminal Q signal of the divider 1 is 'low', so the output of the inverter 2 becomes 'high' and thus the transistor Q ₁ is accordingly. Fan motor FM is not driven because is off.

At this time, since the output of the inverter 6 is 'low' state, the oscillator 7 and the amplifier 8 are not driven so that the transistor Q2 is kept in an off state, and thus the ozone generator 10 is not driven. The system is shut off.

In this state, when the power switch SW ₁ is turned on to operate the deodorizer, the divider 1 divides the clock signal as shown in (a) of FIG. 2 input through the clock terminal CK. The terminal Q signal becomes 'high' and the potential at the point P becomes 'low' as shown in (b) of FIG.

Accordingly, since the transistor Q ₁ is turned on, the fan motor FM is driven. At this time, the reference voltage Vref determined by the distribution resistors R ₅ and R _{6 is} connected to one terminal of the fan motor FM. Since the output of the comparator 4 becomes 'low' than the voltage induced by the resistor d connected between the grounds, the low signal is applied to the base of the transistor Q ₃ . The transistor Q ₃ remains in the off state even in the presence of the transistor, and accordingly, the transistor Q ₄ is turned off and thus the reset terminal of the divider 1 ) Is applied to the 'high' signal as shown in (d) of FIG. 2 so that the divider 1 maintains the set state.

In addition, when the P point potential is 'low', the output of the inverter 6 becomes 'high', so that the oscillator 7 and the amplifier 8 are driven to cause the transistor Q ₂ to repeat the on and off operations. Therefore, the ozone generator 10 is driven so that ozone is generated so that the odor in the air can be normally removed.

On the other hand, when the fan motor FM is suddenly abnormal in this way and the fan motor FM is not driven, the reference voltage Vref is higher than the voltage induced across the resistor R ₇ . Therefore, the output of the comparator 4 is in a high state, and the transistor Q ₃ , to which the low signal is applied to the base, is turned on.

Therefore, the reset terminal of the transistors 'high' signal is applied, so the transistor (Q _4), such as a second-degree (c) to the base of (Q ₄₎ is turned on the divider (1) ( ), The divider 1 is reset because the signal 'low' is applied as shown in (d) of FIG.

Accordingly, since the output (Q) signal of the frequency divider 1 is converted to the 'low' state, the potential of the P point becomes the 'high' state, and the 'low' signal is input to the input terminal of the oscillator 7 through the inverter 6. Since the oscillator 7 and the amplifier 8 cannot be driven because the transistor Q ₂ is turned off, the ozone generator 10 is cut off and the fan motor FM is not driven. It is possible to prevent the damage that can be generated by driving (10) in advance.

On the other hand, when the power supply voltage (B ⁺ ) falls below a predetermined voltage and the voltage across the resistor (R ₁₀ ) is lower than the voltage that can be detected by the 'high' signal (that is, detected by the 'low' signal), the divider (1 ) Is reset. As described above, driving of the entire system is blocked, thereby preventing damage caused by ozone.

As described above, according to the present invention, if an abnormality occurs in a fan motor that has been normally operated, the entire system is shut off and the ozone generator is driven even though the fan motor is in a broken state, thereby preventing damage that may be caused by ozone. It is possible to prevent it in advance, so that the user can use the product with more peace of mind.

Claims (1)

A divider 1 for dividing a predetermined clock signal to adjust the ozone generation time, an inverter 2 for inverting the output signal of the divider 1, and an output state of the inverter 2 A fan motor driving unit 3 for determining whether to drive the fan motor FM, a predetermined voltage applied to the fan motor FM, and a reference voltage Vref by the distribution resistors R ₅ and R ₆ . The comparator 4 which detects the abnormality of the fan motor FM by comparing with, and the reset unit 5 which is controlled by the output of the inverter 2 and outputs the reset signal to the divider 1. ), An inverter 6 which inverts the output of the inverter 2 again, an oscillator 7 which is driven when the output of the inverter 6 is 'high' and outputs a predetermined oscillation frequency; An amplifier 8 for amplifying the output signal of the oscillator 7 and a switching operation by the output signal of the amplifier 8 to drive the ozone generator 10. Zone driver generator 9, characterized in that the detection wareul hayeoseo or more fans Motor the deodorizer to the circuit provided.