CN102626523A

CN102626523A - Full-automatic air purifier

Info

Publication number: CN102626523A
Application number: CN2012101350056A
Authority: CN
Inventors: 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2012-08-08

Abstract

The invention belongs to the technical field of electronics and air purification and relates to a full-automatic air purifier. The full-automatic air purifier consists of a 12V direct-current power supply, a harmful gas detection circuit, a critical value sampling circuit, a level signal amplification circuit, a working condition indicating circuit, an oscillator and booster circuit, a negative high voltage rectification circuit and a high-voltage spray point. A type selected for a power switch integrated circuit (IC1) in the oscillator and booster circuit is TWH8751. The air is ionized by the full-automatic air purifier by utilizing negative high voltage. The full-automatic air purifier is capable of automatically generating negative oxygen ions when indoor air pollution or harmful gas reaches certain concentration, and therefore, the air quality is improved, so that the air is kept fresh. The full-automatic air purifier is favorable for the human health and is capable of achieving the goal of sterilizing the air. The full-automatic air purifier is suitable for the air purification of enclosed places, such as families, offices and public places.

Description

The full-automatic air depurator

Technical field

The invention belongs to electronic technology and air purifying process field, relate to a kind of full-automatic air depurator.

Background technology

Aggravation along with urban air pollution; The pressure that our living environment faces constantly increases; In the room air quality of sealing also worse and worse; Harmful substances such as excessive accumulative antibacterial, virus not only produce niff in the air, make air dirty, and can cause also that headache, fatigue, attention can not be concentrated, skin eyes allergy etc. diminishes the consequence of health.

The full-automatic air depurator is to utilize the negative high voltage ionized air, with increase anion and the content of ozone in air ambient, thereby improves air quality, helps health, is described as " air vitamin " by people.The clinical medicine practice shows: it all has auxiliary curative effect to the disease of the aspects such as respiratory system, blood circulation and nerve of human body, both has been of value to health, also helps increasing work efficiency.Thereby be able to extensive use at daily life and medical domain.

The full-automatic air depurator can produce negative oxygen ion automatically when room air dirt or harmful gas reach finite concentration, make air keep pure and fresh, reaches the purpose of air being carried out sterilizing.It is specially adapted to the air cleaning in sealing places such as family, office, public place.

Below specify the related in force correlation technique content of this full-automatic air depurator.

Summary of the invention

Goal of the invention and beneficial effect: the full-automatic air depurator is to utilize the negative high voltage ionized air; It can be when room air dirt or harmful gas reach finite concentration; Automatically produce negative oxygen ion, thereby improve air quality, make air keep pure and fresh; Help health, reach the purpose of air being carried out sterilizing.It is applicable to the air cleaning in sealing places such as family, office, public place.

The circuit working principle: the circuit of full-automatic air depurator is divided into two parts, forms the air detection on-off circuit with gas sensor QM (QM-N6), and it can detect the flammable gas of Denging.When indoor harmful gas reaches finite concentration, because raising, the 4th foot of gas sensor QM and the 6th foot current potential make NPN transistor VT1 saturation conduction, played the effect of sense switch.Rt is a negative tempperature coefficient thermistor, is used for the deviation that complemental air photosensitive elements QM causes because of variations in temperature.With TWH8751 is the circuit composition negative oxygen ion generator of central component, and its frequency of oscillation is about 1KHz, can obtain the high pressure of about 6KV at the secondary coil L2 of impulse type booster transformer B.Discharge end adopts open, has improved the concentration of negative oxygen ion greatly, has reduced the concentration of ozone.The 2nd foot of TWH8751 is an in-phase input end when being high potential, and the blocking of oscillator is under the indoor environment normal condition; Resistance is very big between the 1st foot of gas sensor QM and the 4th foot; The 4th foot of gas sensor QM and the 6th foot current potential are very low, and NPN transistor VT1 is in and ends, and the 2nd foot of TWH8751 is a high potential; Agitator is not worked, and on secondary coil L2, does not have high pressure to produce; When indoor harmful gas concentration has surpassed the marginal value that potentiometer RP sets, the saturated and conducting of NPN transistor VT1, the 2nd foot foot of TWH8751 is electronegative potential, the agitator starting of oscillation, the high pressure in that secondary coil L2 produces about 6KV produces negative oxygen ion simultaneously.When anion reached finite concentration, the smog in promptly can decontamination chamber was realized the purpose of fresh air.

Technical scheme: full-automatic air depurator; It is made up of 12V dc source, harmful gas testing circuit, threshold sampling circuit, level signal amplifying circuit, duty indicating circuit, agitator and booster circuit, negative high voltage rectification circuit and electrion pin, and its characteristic comprises:

Harmful gas testing circuit: form by gas sensor QM and resistance R 1; The model that gas sensor QM selects for use is QM-N6; The anodal VCC of the 1st foot of gas sensor QM and the 3rd foot connection circuit; The anodal VCC of connection circuit behind the 2nd foot series resistor R1 of gas sensor QM, the 5th foot connection circuit ground GND of gas sensor QM, the 4th foot and the 6th foot of gas sensor QM connect the threshold sampling circuit;

Threshold sampling and level signal amplifying circuit: form by potentiometer RP, critesistor Rt, silicon rectifier diode D1, electrochemical capacitor C1 and NPN transistor VT1; The 4th foot and the 6th foot of the termination gas sensor QM of potentiometer RP; Connection circuit ground GND links to each other behind the other end serial connection critesistor Rt of potentiometer RP; The positive pole of the movable knee-joint silicon rectifier diode D1 of potentiometer RP; The negative pole of silicon rectifier diode D1 links to each other with the positive pole of electrochemical capacitor C1, the base stage of NPN transistor VT1, the emitter stage connection circuit ground GND of NPN transistor VT1, and the colelctor electrode of NPN transistor VT1 connects agitator;

Agitator and booster circuit: form by power switch circuit IC1, electric capacity of the dacron C2, resistance R 3 and impulse type booster transformer B; The model that power switch circuit IC1 selects for use is TWH8751; The 2nd foot of power switch circuit IC1 connects the colelctor electrode of NPN transistor VT1; The 1st foot of power switch circuit IC1 connects the end of electric capacity of the dacron C2 and an end of resistance R 3; The other end connection circuit ground GND of the 3rd foot of power switch circuit IC1 and electric capacity of the dacron C2; The other end of the 4th foot connecting resistance R3 of power switch circuit IC1 and impulse type booster transformer B low pressure hold the end of group L1, and the 5th foot of power switch circuit IC1 and impulse type booster transformer B low pressure hold the anodal VCC of other end connection circuit of group L1;

Negative high voltage rectification circuit and electrion pin: form by impulse type booster transformer B, high voltage silicon rectifier stack D2, electrocution-proof protection resistance R 4 and electrion pin; The termination circuit ground GND of impulse type booster transformer B secondary coil L2; The negative pole of another termination high voltage silicon rectifier stack D2 of impulse type booster transformer B secondary coil L2 connects the electrion pin after the positive pole serial connection electrocution-proof protection resistance R 4 of high voltage silicon rectifier stack D2.

The 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.

The duty indicating circuit: the negative pole of LED connects the colelctor electrode of NPN transistor VT1, the anodal VCC of connection circuit behind the cathode series resistance R2 of LED.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram of full-automatic air depurator; B is the impulse type booster transformer in the accompanying drawing 1.

The specific embodiment

Specification requirement according to the components and parts of the circuit working schematic diagram of the full-automatic air depurator shown in the accompanying drawing 1 and description of drawings and the following stated is implemented, and can realize the present invention.

The selection of components and parts and technical parameter

QM is a gas sensor, and the model of selecting for use is QM-N6;

IC1 is a power switch circuit, and the model of selecting for use is TWH8751, and it adopts the TOP-220 encapsulation; Its internal circuit is by input stage; Buffer amplifier and Darlington power output stage are formed, and are provided with feedback control loop and subtract the flow pattern output protection circuit, have 5 pins;

VT1 is a NPN transistor, and the model of selecting for use is 2SC9013;

D1 is a silicon rectifier diode, and the model of selecting for use is 1N4001;

D2 is a high voltage silicon rectifier stack, and the technical parameter of selecting for use is 18kV;

The resistance of resistance R 1 is that 100 Ω, power are 1/2W; The resistance of resistance R 2 is 560 Ω; The resistance of resistance R 3 is 100K, and resistance R 4 is an electrocution-proof protection resistance, and its resistance is 3.5～4.7M Ω; Rt is a critesistor, and its resistance is 430 Ω, requires negative temperature coefficient; RP is a potentiometer, and its resistance is 2.2K Ω;

C1 is an electrochemical capacitor, and capacity is 100 μ F/16V; C2 is an electric capacity of the dacron, and capacity is 0.01 μ F;

LED is ￠ 5 green LEDs;

The 12V dc source, but the selection work electric current is greater than the regulated power supply of 600mA.

Circuit production main points and circuit debugging

The making of impulse type booster transformer B: impulse type booster transformer B is nonstandard device; Can adopt the transformation of the way of 14 inch black and white television line output transformers; At first with low pressure covered winding wire circle complete removal; Low pressure holds group L1 and puts down around 45 circles with ￠ 0.6mm enamel-covered wire, and secondary coil L2 uses the high voltage package of former black and white television line output transformer; If as selecting the integrated line output transformer transformation of the way for use, then machine volume is littler;

The making of electrion pin: on the copper clad plate of long 170mm, wide 40mm, bore 3 row's human bodies, 16 holes of every row, diameter is 0.8mm.Require nickel plating pin length consistent, and tip point is good more more, one by one in the patchhole human body and weld, require each solder joint slick and sly pin, can not be jagged; Attention: the lead-in wire of nearly ten thousand volts negative high-voltage end must use black and white television line output high-voltage connection;

Complete machine is packed in the ABS engineering plastics box of a 180mm * 110mm * 80mm;

The circuit of full-automatic air depurator welds according to the annexation of components and parts shown in the accompanying drawing 1 as long as the components and parts performance of using is intact, the physics wiring is conscientiously checked and check errorless after, the circuit of this device need not debugged and get final product operate as normal;

During circuit debugging, the knob of regulator potentiometer RP makes circuitry have more satisfactory sensitivity to get final product.

Claims

1. full-automatic air depurator; It is made up of 12V dc source, harmful gas testing circuit, threshold sampling circuit, level signal amplifying circuit, duty indicating circuit, agitator and booster circuit, negative high voltage rectification circuit and electrion pin, and its characteristic comprises:

The harmful gas testing circuit is made up of gas sensor QM and resistance R 1; The model that gas sensor QM selects for use is QM-N6; The anodal VCC of the 1st foot of gas sensor QM and the 3rd foot connection circuit; The anodal VCC of connection circuit behind the 2nd foot series resistor R1 of gas sensor QM, the 5th foot connection circuit ground GND of gas sensor QM, the 4th foot and the 6th foot of gas sensor QM connect the threshold sampling circuit;

Threshold sampling and level signal amplifying circuit are made up of potentiometer RP, critesistor Rt, silicon rectifier diode D1, electrochemical capacitor C1 and NPN transistor VT1; The 4th foot and the 6th foot of the termination gas sensor QM of potentiometer RP; Connection circuit ground GND links to each other behind the other end serial connection critesistor Rt of potentiometer RP; The positive pole of the movable knee-joint silicon rectifier diode D1 of potentiometer RP; The negative pole of silicon rectifier diode D1 links to each other with the positive pole of electrochemical capacitor C1, the base stage of NPN transistor VT1, the emitter stage connection circuit ground GND of NPN transistor VT1, and the colelctor electrode of NPN transistor VT1 connects agitator;

Agitator and booster circuit are made up of power switch circuit IC1, electric capacity of the dacron C2, resistance R 3 and impulse type booster transformer B; The model that power switch circuit IC1 selects for use is TWH8751; The 2nd foot of power switch circuit IC1 connects the colelctor electrode of NPN transistor VT1; The 1st foot of power switch circuit IC1 connects the end of electric capacity of the dacron C2 and an end of resistance R 3; The other end connection circuit ground GND of the 3rd foot of power switch circuit IC1 and electric capacity of the dacron C2; The other end of the 4th foot connecting resistance R3 of power switch circuit IC1 and impulse type booster transformer B low pressure hold the end of group L1, and the 5th foot of power switch circuit IC1 and impulse type booster transformer B low pressure hold the anodal VCC of other end connection circuit of group L1;

Negative high voltage rectification circuit and electrion pin are made up of impulse type booster transformer B, high voltage silicon rectifier stack D2, electrocution-proof protection resistance R 4 and electrion pin; The termination circuit ground GND of impulse type booster transformer B secondary coil L2; The negative pole of another termination high voltage silicon rectifier stack D2 of impulse type booster transformer B secondary coil L2 connects the electrion pin after the positive pole serial connection electrocution-proof protection resistance R 4 of high voltage silicon rectifier stack D2.

2. full-automatic air depurator according to claim 1 is characterized in that: the 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.

3. full-automatic air depurator according to claim 1 is characterized in that: the negative pole of the LED in the duty indicating circuit connects the colelctor electrode of NPN transistor VT1, the anodal VCC of connection circuit behind the cathode series resistance R2 of LED.