CN206160372U - Ultraviolet lamp air deodorization is short -circuit protection type integrated control circuit for clarifier - Google Patents

Abstract

The utility model discloses an ultraviolet lamp air deodorization is short -circuit protection type integrated control circuit for clarifier, mainly by transformer T, diode rectifier U1, control chip U2, switch S1, switch S2, electric capacity C3, diode D2, diode D1, electric capacity C4 to and one end and triode VT5's projecting pole is connected, the constitutions such as resistance R10 of other end ground connection. The utility model discloses can change pulse width and control output voltage effectual enough the suppression or elimination "lower -order harmonic among the input voltage, make output voltage more stable, and the utility model discloses can also adjust the duty cycle of voltage to can be when the short circuit take place for output, can restrain or eliminate high electric current in the twinkling of an eye, thereby improve the utility model discloses an output voltage's stability has effectively improved the utility model discloses dammed and the effect of current -limiting protection.

Description

A kind of ultraviolet lamp air deodorization clarifier short circuit protective integral control circuit

Technical field

It is a kind of ultraviolet lamp air deodorization clarifier with short specifically the utility model relates to field of environment protection Road protection type integral control circuit.

Background technology

With the continuous improvement of continuous progressive and people's quality of life of industrial automation, people want to its living environment Ask and also improve constantly, and air quality is an important mark of environment quality, it directly influences the healthy living of people.

Air purifier has application in house, medical treatment, industrial circle, and house field is with the domestic air purification of unit class Device is the main product in market.Air purifier can remove the particulate matter in air, including anaphylactogen, indoor PM2.5 etc., together When can also solve due to interior caused by finishing or other reasonses, the underground space, in-car volatile organic matter air pollution Problem.The characteristics of having persistence and uncertainty due to the release of the space Air Contamination thing of relative closure, therefore using empty It is internationally recognized to improve one of method of IAQ that gas purifier purifies the air of a room.Wherein, ultraviolet lamp air Deodorization purifier is then a kind of in numerous air deodorization clarifiers, and ultraviolet lamp air deodorization clarifier is using high energy ozone UV The oxygen molecule that ultraviolet beam decomposes in air produces free oxygen, i.e. active oxygen, and the air deodorization clarifier utilizes exhaust equipment Gas is input to after this cleaning equipment, cleaning equipment easily eliminates thin in room air with high energy UV ultraviolet beams The harmful substances such as bacterium, mould, remove the peculiar smell in air, effectively ensure that the respiratory health of people.

However, the output voltage stability of the control circuit of existing ultraviolet lamp air deodorization clarifier is poor, cause purple There is flicker in the ultraviolet beam of the ultraviolet lamp of outside line lamp air deodorization clarifier, causes air purifier effectively right Oxygen molecule in air is decomposed, the effect on driving birds is not good for the free oxygen of generation occur, it is impossible to eliminated well in room air The harmful substances such as bacterium, mould, and the peculiar smell in air can not be well removed, so as to cannot effectively ensure that people's Respiratory health；And damming for the control circuit of existing ultraviolet lamp air deodorization clarifier is poor with current-limiting protection function, The blower fan and ultraviolet lamp for causing ultraviolet lamp air deodorization clarifier is often damaged by high current, and serious have impact on outside line lamp sky The service life of gas deodorization purifier.

Therefore it provides one kind can improve output voltage stability, and can improve and dam and current-limiting protection functional effect The control circuit of ultraviolet lamp air deodorization clarifier is become for the task of top priority.

Utility model content

The purpose of this utility model is the output of the control circuit for overcoming existing ultraviolet lamp air deodorization clarifier Voltage stability is poor, and the defect poor with current-limiting protection function of damming, there is provided a kind of ultraviolet lamp air deodorization purification Device short circuit protective integral control circuit.

The utility model is achieved through the following technical solutions：A kind of ultraviolet lamp air deodorization clarifier short-circuit protection Type integral control circuit, mainly by transformer T, diode rectifier U1, control chip U2 switch S1, switch S2, triode The cathode output end of VT1, triode VT2, triode VT3, triode VT4, triode VT5, positive pole and diode rectifier U1 Be connected, the electric capacity C1 that negative pole is grounded after being connected with the cathode output end of diode rectifier U1, one end and electric capacity C1 are just The cathode output end of the resistance R1 that pole is connected, the other end is connected with the negative pole of electric capacity C1, positive pole and diode rectifier U1 Be connected, the electric capacity C2 that negative pole is connected with the ADJ pins of control chip U2, positive pole Jing after resistance R3 with the base of triode VT2 Pole is connected, the electric capacity C3 that negative pole is connected with the VDD pins of control chip U2, and P poles are connected with the positive pole of electric capacity C3, N poles The diode D2 being connected with the VDD pins of control chip U2 Jing after diode D3, P poles are connected with the colelctor electrode of triode VT1 Connect, the diode D1 that N poles are connected with the positive pole of electric capacity C3, one end is connected with the colelctor electrode of triode VT1, the other end and three The adjustable resistance R2 that the colelctor electrode of pole pipe VT2 is connected, positive pole is connected with the emitter stage of triode VT2, negative pole Jing resistance R4 The electric capacity C4 being connected with the OUTPUT pins of control chip U2 afterwards, positive pole is connected with the colelctor electrode of triode VT4, negative pole with The emitter stage of triode VT3 is collectively forming the electric capacity C5 of the first output end, and P poles are connected with the positive pole of electric capacity C5, N poles and three poles The diode D5 that the emitter stage of pipe VT3 is connected, P poles are connected with the colelctor electrode of triode VT3, N poles are used as the second output end Zener diode D4, positive pole is connected Jing after resistance R5 with the base stage of triode VT3, negative pole Jing after resistance R7 with triode The electric capacity C6 that the colelctor electrode of VT5 is connected, positive pole is connected with the OUTPUT pins of control chip U2, negative pole Jing after resistance R6 with The electric capacity C7 that the base stage of triode VT4 is connected, positive pole is connected with the emitter stage of triode VT4, the electric capacity C8 of minus earth, P poles are connected Jing after resistance R8 with the LAMP pins of control chip U2, N poles are connected Jing after resistance R9 with the base stage of triode VT5 The diode D6 for connecing, and one end is connected with the emitter stage of triode VT5, the resistance R10 of other end ground connection is constituted；Described three The base stage of pole pipe VT1 is connected with the colelctor electrode of triode VT2, its emitter stage is connected with the emitter stage of triode VT2；It is described The emitter stage of triode VT2 is also connected with the emitter stage of triode VT3, its base stage is also grounded；The transformer T secondary inductances The Same Name of Ends of coil is connected with one of input of diode rectifier U1, its non-same polarity and diode rectifier U1 Another input be connected, the Same Name of Ends of its former limit inductance coil and non-same polarity are collectively forming input；The control The VDD pins of chip U2 are connected respectively with the cathode output end of diode rectifier U1 and the positive pole of electric capacity C2, its VSS pin Ground connection；One end ground connection of the switch S1, the other end are connected with the PWR pins of control chip U2；One end of the switch S2 It is connected with the ADJ pins of control chip U2, the other end is grounded.

The Same Name of Ends of transformer T secondary inductance coils is connected with one of input of diode rectifier U1 Connect, its non-same polarity is connected with another input of diode rectifier U1, the Same Name of Ends of its former limit inductance coil and non- Same Name of Ends is collectively forming input；The VDD pins of the control chip U2 respectively with the cathode output end of diode rectifier U1 It is connected with the positive pole of electric capacity C2, its VSS pin is grounded；One end ground connection of the switch S1, the other end and control chip U2 PWR pins are connected；One end of the switch S2 is connected with the ADJ pins of control chip U2, other end ground connection.

To guarantee practical effect of the present utility model, the control chip U2 is JX2998 control chips；The change Depressor T is 10KVS9 serial transformers；The switch S1 and switch S2 are the PB-11D14 buttons of contact resistance≤0.03 Ω Switch.

The utility model compared with prior art, with advantages below and beneficial effect：

(1) the utility model can to input voltage in it is effective enough suppression or eliminate low-order harmonic, change pulse width Carry out controlled output voltage, make output voltage more stable；And the utility model can also be adjusted to the dutycycle of voltage, and energy Accelerate PWM ripple governing speeds, improve PWM ripple dynamic properties, make PWM ripples more stable, so as to improve output of the present utility model Dodging occurs in the stability of voltage, the ultraviolet beam that can effectively prevent the ultraviolet lamp of ultraviolet lamp air deodorization clarifier It is bright, air purifier is decomposed to the oxygen molecule in air well.

(2) the utility model can be suppressed or be eliminated when output is short-circuited to instantaneous high current, so as to improve The effect dammed with current-limiting protection of the present utility model, can effectively prevent ultraviolet lamp air deodorization clarifier blower fan and Ultraviolet lamp is damaged by high current, while the service life of outside line lamp air deodorization clarifier can be extended well.

(3) control chip U2 of the present utility model is JX2998 control chips, and the chip can have in combination with peripheral circuit The raising stability of the present utility model of effect and reliability.

Description of the drawings

Fig. 1 is integrated circuit structural representation of the present utility model.

Specific embodiment

The utility model is described in further detail with reference to embodiment and its accompanying drawing, but reality of the present utility model Apply mode not limited to this.

As shown in figure 1, the utility model switchs S1 mainly by transformer T, diode rectifier U1, control chip U2, open Close S2, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, resistance R1, adjustable resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, electric capacity C1, electric capacity C2, electric capacity C3, electricity Hold C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, diode D1, diode D2, diode D3, Zener diode D4, two poles Pipe D5, and diode D6 compositions.

During connection, the positive pole of electric capacity C1 is connected with the cathode output end of diode rectifier U1, and negative pole is whole with diode The cathode output end of stream device U1 is grounded after being connected.One end of resistance R1 is connected with the positive pole of electric capacity C1, the other end and electric capacity The negative pole of C1 is connected.The positive pole of electric capacity C2 is connected with the cathode output end of diode rectifier U1, negative pole and control chip The ADJ pins of U2 are connected.The positive pole of electric capacity C3 is connected Jing after resistance R3 with the base stage of triode VT2, negative pole with control core The VDD pins of piece U2 are connected.The P poles of diode D2 are connected with the positive pole of electric capacity C3, and N poles are extremely connected with the P of diode D3 Connect, the N poles of the diode D3 are then connected with the VDD pins of control chip U2.

Wherein, the P poles of diode D1 are connected with the colelctor electrode of triode VT1, and N poles are connected with the positive pole of electric capacity C3. One end of adjustable resistance R2 is connected with the colelctor electrode of triode VT1, and the other end is connected with the colelctor electrode of triode VT2.Electricity Hold C4 positive pole be connected with the emitter stage of triode VT2, negative pole Jing after resistance R4 with the OUTPUT pin phases of control chip U2 Connection.The positive pole of electric capacity C5 is connected with the colelctor electrode of triode VT4, and the emitter stage of negative pole and triode VT3 is collectively forming the One output end is simultaneously connected with blower fan M.The P poles of diode D5 are connected with the positive pole of electric capacity C5, and N poles are sent out with triode VT3's Emitter-base bandgap grading is connected.The P poles of Zener diode D4 are connected with the colelctor electrode of triode VT3, N poles as the second output end and with purple Outside line lamp ZWD is connected.

Meanwhile, the positive pole of electric capacity C6 is connected Jing after resistance R5 with the base stage of triode VT3, and negative pole is Jing after resistance R7 with three The colelctor electrode of pole pipe VT5 is connected.The positive pole of electric capacity C7 is connected with the OUTPUT pins of control chip U2, negative pole Jing resistance R6 It is connected with the base stage of triode VT4 afterwards.The positive pole of electric capacity C8 is connected with the emitter stage of triode VT4, minus earth.Two poles The P poles of pipe D6 are connected Jing after resistance R8 with the LAMP pins of control chip U2, N poles Jing after resistance R9 with the base of triode VT5 Pole is connected.One end of resistance R10 is connected with the emitter stage of triode VT5, other end ground connection.

The base stage of the triode VT1 is connected with the colelctor electrode of triode VT2, its emitter stage and triode VT2 send out Emitter-base bandgap grading is connected；The emitter stage of the triode VT2 is also connected with the emitter stage of triode VT3, its base stage is also grounded；It is described The Same Name of Ends of transformer T secondary inductance coils is connected with one of input of diode rectifier U1, its non-same polarity It is connected with another input of diode rectifier U1, the Same Name of Ends and non-same polarity of its former limit inductance coil are collectively forming Input is simultaneously connected with civil power；The VDD pins of the control chip U2 respectively with the cathode output end of diode rectifier U1 It is connected with the positive pole of electric capacity C2, its VSS pins ground connection；One end ground connection of the switch S1, the other end is with control chip U2's PWR pins are connected；One end of the switch S2 is connected with the ADJ pins of control chip U2, other end ground connection.

During operation, transformer T of the present utility model carries out step-down process to the civil power being input into, the alternating voltage after the process Diode rectifier U1, low exchanges of the diode rectifier U1 to receiving are transferred to after the secondary inductance coil of transformer T Voltage carries out being converted to 12V DC voltages after rectification.The 12V DC voltages are imported into the filter formed by electric capacity C1 and resistance R1 Ripple device, the wave filter is eliminated or suppressed to the low-order harmonic in DC voltage, makes DC voltage cleaner, more steady, filter DC voltage after process is transferred to control chip U2 by ripple device, when switch S1 and switch S2 be off-state, control chip U2 FAN pin and LAMP pin output low level, blower fan M and ultraviolet lamp ZWD do not work.

After SW1 keys are pressed, FAN pin output 100%PWM ripples, diode D1 that the PWM ripples are concatenated, diode D2, two The tandem type short-circuit protection circuit that pole pipe D3, triode VT1 and triode VT2 are formed, the tandem type short-circuit protection circuit can be right The instantaneous high current produced during output short-circuit is suppressed or is eliminated, so as to improve of the present utility model damming and current-limiting protection Effect, the blower fan and ultraviolet lamp that can effectively prevent ultraviolet lamp air deodorization clarifier is damaged by high current, and is controlled The high driving current electricity that then Jing electric capacity C5, electric capacity C7, resistance R6 and triode VT4 are formed of the OUTPUT pins output of chip U2 Current detection circuit effectively reduces the Leakage Current and loss current of output current, and can suppress the unusual fluctuations of output current, PWM wave velocities can also be changed, improve PWM ripple dynamic properties, make PWM ripples more stable, even if output current keeps stable, Jing electric currents The positive pole transmission fan M driving stages of the drive circuit Jing electric capacity C5 after detection processing of circuit, are concatenated type short-circuit protection circuit Voltage afterwards then transmits the fortune pole of fan M and ultraviolet lamp ZWD, and now blower fan M is operated in as maximum quantity of wind state, same to time control The booster circuit that the LAMP pin output high level Jing diode D6 of coremaking piece U2, triode VT5 and electric capacity C6 are formed, this liter of piezoelectricity The high voltage of road output is powered Jing after Zener diode D4 for ultraviolet lamp ZWD, the terminals ground connection of ultraviolet lamp ZWD, End ultraviolet lamp ZWD obtain it is electric after be lit, ultraviolet lamp ZWD transmission high energy ozone UV ultraviolet beams to the oxygen in air Son is carried out decomposing and produces free oxygen, i.e. active oxygen, and gas is input to this purification by the air deodorization clarifier using exhaust equipment After equipment, cleaning equipment easily eliminates the harmful substances such as bacterium, the mould in room air with high energy UV ultraviolet beams, goes Except the peculiar smell in air, the respiratory health of you and household is ensured.

Wherein, the diode D1 of the series connection, diode D2, diode D3, triode VT1 and triode VT2 are formed Tandem type short-circuit protection circuit, used as the adjustment pipe of the circuit, operationally, the emitter stage of triode VT2 is defeated for its triode VT1 It is 0 to go out voltage, while the base stage of triode VT2 is turned on colelctor electrode, the cut-off of pipe triode VT1 is adjusted, so as to the tandem type Short-circuit protection circuit can to output short-circuit when the instantaneous high current that produces suppressed or eliminated, be effectively prevented ultraviolet lamp The blower fan and ultraviolet lamp of air deodorization clarifier is shorted produced instantaneous high current and damages.

Meanwhile, when the air quality in ultraviolet lamp air deodorization clarifier working range is in shape, then by SW1 Key, then return to the first step.SW2 keys are air quantity adjusting keys, and SW2 keys are pressed under blower fan M working conditions, and the PWM ripples of FAN pin output exist Change between 100% and 50%, air quantity is switched over therewith between height, the LAMP pin of control chip U2 reduce output electricity It is flat, the ozone UV ultraviolet beam weakeneds of ultraviolet lamp ZWD, so as to ultraviolet lamp air deodorization clarifier reduces output work Rate, that is, reduce the consumption to electric energy, therefore, the utility model also achieves the effect of energy-conservation.

To guarantee practical effect of the present utility model, the control chip U2 is to be designed using 0.8 micron process The JX2998 control chips of CMOS air deodorizations purification；The transformer T be 10KVS9 serial transformers, the height of transformer T Pressure tapping range is ± 2 × 2.5%；The switch S1 and switch S2 are the PB-11D14 buttons of contact resistance≤0.03 Ω and open Close.

According to above-described embodiment, you can realize the utility model well.

Claims (4)

1. a kind of ultraviolet lamp air deodorization clarifier short circuit protective integral control circuit, it is characterised in that main by becoming Depressor T, diode rectifier U1, control chip U2, switch S1, switch S2, triode VT1, triode VT2, triode VT3, Triode VT4, triode VT5, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and diode rectifier Electric capacity C1 that the cathode output end of U1 is grounded after being connected, one end is connected with the positive pole of electric capacity C1, the other end and electric capacity C1 The resistance R1 that negative pole is connected, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and control chip U2 The electric capacity C2 that ADJ pins are connected, positive pole is connected Jing after resistance R3 with the base stage of triode VT2, negative pole and control chip U2 The electric capacity C3 that is connected of VDD pins, P poles are connected with the positive pole of electric capacity C3, N poles Jing after diode D3 with control chip U2's The diode D2 that VDD pins are connected, P poles are connected with the colelctor electrode of triode VT1, N poles are connected with the positive pole of electric capacity C3 Diode D1, one end is connected with the colelctor electrode of triode VT1, the other end is connected with the colelctor electrode of triode VT2 can Adjust resistance R2, positive pole is connected with the emitter stage of triode VT2, negative pole Jing after resistance R4 with the OUTPUT pins of control chip U2 The electric capacity C4 being connected, positive pole is connected with the colelctor electrode of triode VT4, the emitter stage of negative pole and triode VT3 is collectively forming The electric capacity C5 of the first output end, two poles that P poles are connected with the positive pole of electric capacity C5, N poles are connected with the emitter stage of triode VT3 Pipe D5, P pole is connected with the colelctor electrode of triode VT3, N poles as the second output end Zener diode D4, positive pole Jing resistance Be connected with the base stage of triode VT3 after R5, the electric capacity C6 that negative pole is connected Jing after resistance R7 with the colelctor electrode of triode VT5, Positive pole is connected with the OUTPUT pins of control chip U2, the electricity that negative pole is connected Jing after resistance R6 with the base stage of triode VT4 Hold C7, positive pole is connected with the emitter stage of triode VT4, the electric capacity C8 of minus earth, P poles Jing after resistance R8 with control chip U2 LAMP pins be connected, the diode D6 that N poles are connected Jing after resistance R9 with the base stage of triode VT5, and one end and three The emitter stage of pole pipe VT5 is connected, the resistance R10 compositions of other end ground connection；The base stage of the triode VT1 and triode VT2 Colelctor electrode be connected, its emitter stage is connected with the emitter stage of triode VT2；The emitter stage of the triode VT2 is also with three The emitter stage of pole pipe VT3 is connected, its base stage is also grounded；The Same Name of Ends of the transformer T secondary inductance coils is whole with diode One of input of stream device U1 is connected, its non-same polarity is connected with another input of diode rectifier U1, The Same Name of Ends and non-same polarity of its former limit inductance coil is collectively forming input；The VDD pins of the control chip U2 respectively with The cathode output end of diode rectifier U1 is connected with the positive pole of electric capacity C2, its VSS pins ground connection；One end of the switch S1 Ground connection, the other end are connected with the PWR pins of control chip U2；One end of the switch S2 and the ADJ pins of control chip U2 It is connected, the other end is grounded.

2. a kind of ultraviolet lamp air deodorization clarifier short circuit protective integral control circuit according to claim 1, Characterized in that, the control chip U2 is JX2998 control chips.

3. a kind of ultraviolet lamp air deodorization clarifier short circuit protective integral control circuit according to claim 2, Characterized in that, the transformer T is 10KVS9 serial transformers.

4. a kind of ultraviolet lamp air deodorization clarifier short circuit protective integral control circuit according to claim 3, Characterized in that, the switch S1 and switch S2 are the PB-11D14 key switches of contact resistance≤0.03 Ω.