CN102973978A

CN102973978A - Automatic air purification plant

Info

Publication number: CN102973978A
Application number: CN 201210586250
Authority: CN
Inventors: 韩春龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-29
Filing date: 2012-12-29
Publication date: 2013-03-20

Abstract

The invention discloses an automatic air purification plant, which comprises a 12V direct current power source, a harmful gas detection circuit, a harmful gas critical value sampling and level signal amplification circuit, a working status indicating circuit, an oscillating circuit, a booster circuit, a negative high voltage rectifying circuit and a high voltage spray point. The automatic air purification plant is characterized in that a gas sensitive element QM in the harmful gas detection circuit is QM-N6 type; a power switch integrated circuit IC1 in the oscillating circuit is TWH8751 type. The automatic air purification plant utilizes negative high voltage to ionize the air to increase the contents of anion and ozone in the air environment, so as to improve the air quality and facilitate human health. The automatic air purification plant can automatically generate anion to keep fresh when the indoor air is dirty or the harmful gas is accumulated to a certain concentration, so as to sterilize and disinfect the air. The plant is suitable for closed space such as a house, an office and a public place.

Description

Air automatic purification device

Technical field

The invention belongs to electronics and air purifying process field, relate to a kind of air automatic purification device.

Background technology

Along with the air-polluting aggravation, people's living environment air quality constantly worsens, also can be worse and worse in the room Air quality of sealing.The harmful substances such as the antibacterial that excessively assembles in the air, virus not only produce niff and make the air dirt, can cause also that headache, fatigue, attention are not easy to concentrate, the adverse consequences of harmful healths such as skin or eyes allergy.

Air automatic purification device 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 is conducive to increase work efficiency, thereby is able to extensive use at daily life and medical domain.

Air automatic purification device can be when room air dirt or harmful gas reach finite concentration, automatically produce negative oxygen ion, make air keep pure and fresh, reach the purpose of air being carried out sterilizing, it is specially adapted to the air automatic purification in the sealing places such as family, office, public place.

Below specify in force related correlation technique content of air automatic purification device of the present invention.

Summary of the invention

Goal of the invention and beneficial effect: air automatic purification device 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 is conducive to increase work efficiency.Thereby be able to extensive use at daily life and medical domain.Air automatic purification device can be when room air dirt or harmful gas reach finite concentration, automatically produce negative oxygen ion, make air keep pure and fresh, reach the purpose of air being carried out sterilizing, it is specially adapted to the air automatic purification in the sealing places such as family, office, public place.

Technical scheme: air automatic purification device, it is comprised of 12V dc source, harmful gas testing circuit, harmful gas threshold sampling and level signal amplifying circuit, working state indicating circuit, oscillating circuit and booster circuit, negative high voltage rectification circuit and electrion pin, and its feature comprises:

The harmful gas testing circuit: it is comprised of gas sensor QM and resistance R 1, the model that gas sensor QM selects is QM-N6, the anodal VCC of the 1st foot of gas sensor QM and the 3rd foot connection circuit, the 2nd foot of gas sensor QM is by the anodal VCC of resistance R 1 connection circuit, the 5th foot connection circuit ground GND of gas sensor QM, the 4th foot of gas sensor QM and the 6th foot are connected to harmful gas threshold sampling circuit;

Harmful gas threshold sampling and level signal amplifying circuit: it is by potentiometer RP, negative tempperature coefficient thermistor Rt, silicon rectifier diode D1, electrochemical capacitor C1 and NPN transistor VT1 form, the 4th foot and the 6th foot of the termination gas sensor QM of potentiometer RP, the other end of potentiometer RP links to each other by negative tempperature coefficient thermistor Rt connection circuit ground GND, the positive pole of the activity termination silicon rectifier diode D1 of potentiometer RP, the positive pole of the negative pole of silicon rectifier diode D1 and electrochemical capacitor C1, the base stage of NPN transistor VT1 links to each other, the emitter stage connection circuit ground GND of NPN transistor VT1, the colelctor electrode of NPN transistor VT1 connects oscillating circuit and working state indicating circuit;

Oscillating circuit and booster circuit: it is by power switch circuit IC1, electric capacity of the dacron C2, resistance R 3 and booster transformer B form, the model that power switch circuit IC1 selects 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 3rd foot connection circuit ground GND of the other end of electric capacity of the dacron C2 and power switch circuit IC1, the 4th foot of power switch circuit IC1 connects booster transformer B low pressure and holds the end of group L1 and the other end of resistance R 3, and the 5th foot of power switch circuit IC1 and 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: it is comprised of booster transformer B, high voltage silicon rectifier stack D2, electrocution-proof protection resistance R 4 and electrion pin, the termination circuit ground GND of booster transformer B secondary coil L2, the negative pole of another termination high voltage silicon rectifier stack D2 of booster transformer B secondary coil L2, the positive pole of high voltage silicon rectifier stack D2 connects the electrion pin by electrocution-proof protection resistance R 4;

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.

Working state indicating circuit: the negative pole of LED connects the colelctor electrode of NPN transistor VT1, and the positive pole of LED is by the anodal VCC of resistance R 2 connection circuits.

The circuit working principle: the circuit of air automatic purification device is divided into two parts, forms the gas detecting on-off circuit with gas sensor QM, and it can detect the flammable gas of Denging.When indoor harmful gas reaches finite concentration, because the 4th foot and the 6th foot potential rise of gas sensor QM make NPN transistor VT1 saturation conduction, played the sense switch effect.Rt is negative tempperature coefficient thermistor, is used for the deviation that complemental air photosensitive elements QM causes because of variations in temperature.Form negative oxygen ion generator take TWH8751 as core devices, its oscillating circuit frequency is about 1KHz, and L2 obtains about 6KV high pressure at booster transformer B secondary coil.Discharge end adopts open, has greatly improved the concentration of negative oxygen ion, has reduced the concentration of ozone.The 2nd foot of TWH8751 is that in-phase input end is when being high potential, the oscillating circuit failure of oscillation, in indoor environment under normal circumstances, resistance value is very large 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 cut-off, and the 2nd foot of TWH8751 is high potential, oscillating circuit is not worked, and does not have high pressure to produce at secondary coil L2; 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 oscillating circuit starting of oscillation, the high pressure in that secondary coil L2 produces about 6KV produces anion simultaneously.When anion reached finite concentration, the smog in namely can decontamination chamber reached the purpose of fresh air.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram of air automatic purification device, and B is 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 air automatic purification device 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 gas sensor, and the model of selecting is QM-N6;

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

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

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

D2 is high voltage silicon rectifier stack, and the technical parameter of selecting 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 electrocution-proof protection resistance, and its resistance is 3.5～4.7M Ω; Rt is critesistor, and its resistance is 430 Ω, requires negative temperature coefficient; RP is potentiometer, and its resistance is 2.2K Ω;

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

LED is

Green LED;

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

Circuit production main points and circuit debugging

1. the making of booster transformer B: booster transformer B is nonstandard device, can adopt the transformation of the way of 14 inch black-and-white TV set trades output transformers, at first with low pressure covered winding wire circle complete removal, it is flat around 45 circles with ￠ 0.6mm enamel-covered wire that low pressure holds group L1, and secondary coil L2 uses the high voltage package of former black-and-white TV set trades output transformer;

2. the making of electrion pin: the copper clad plate at long 170mm, wide 40mm bores 3 rounds, 16 holes of every row, and the aperture is 0.8mm.Require to use nickel plating pin length consistent, and tip is more sharp better, pin is inserted in the hole and welds, require each solder joint round and smooth, can not be jagged; The high-voltage connection that nearly ten thousand volts negative high voltage lead-in wire must use black and white television or colour TV line output to use;

3. complete machine can be packed in the ABS engineering plastic magazine of a 180mm * 110mm * 80mm;

4. the resistance of regulator potentiometer RP can make circuitry that more satisfactory sensitivity is arranged.

Claims

1. air automatic purification device, it is comprised of 12V dc source, harmful gas testing circuit, harmful gas threshold sampling and level signal amplifying circuit, working state indicating circuit, oscillating circuit and booster circuit, negative high voltage rectification circuit and electrion pin, and its feature comprises:

Described harmful gas testing circuit is comprised of gas sensor QM and resistance R 1, the model that gas sensor QM selects is QM-N6, the anodal VCC of the 1st foot of gas sensor QM and the 3rd foot connection circuit, the 2nd foot of gas sensor QM is by the anodal VCC of resistance R 1 connection circuit, the 5th foot connection circuit ground GND of gas sensor QM, the 4th foot of gas sensor QM and the 6th foot are connected to harmful gas threshold sampling circuit;

Described harmful gas threshold sampling and level signal amplifying circuit are by potentiometer RP, negative tempperature coefficient thermistor Rt, silicon rectifier diode D1, electrochemical capacitor C1 and NPN transistor VT1 form, the 4th foot and the 6th foot of the termination gas sensor QM of potentiometer RP, the other end of potentiometer RP links to each other by negative tempperature coefficient thermistor Rt connection circuit ground GND, the positive pole of the activity termination silicon rectifier diode D1 of potentiometer RP, the positive pole of the negative pole of silicon rectifier diode D1 and electrochemical capacitor C1, the base stage of NPN transistor VT1 links to each other, the emitter stage connection circuit ground GND of NPN transistor VT1, the colelctor electrode of NPN transistor VT1 connects oscillating circuit and working state indicating circuit;

Described oscillating circuit and booster circuit are by power switch circuit IC1, electric capacity of the dacron C2, resistance R 3 and booster transformer B form, the model that power switch circuit IC1 selects 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 3rd foot connection circuit ground GND of the other end of electric capacity of the dacron C2 and power switch circuit IC1, the 4th foot of power switch circuit IC1 connects booster transformer B low pressure and holds the end of group L1 and the other end of resistance R 3, and the 5th foot of power switch circuit IC1 and booster transformer B low pressure hold the anodal VCC of other end connection circuit of group L1;

Described negative high voltage rectification circuit and electrion pin are comprised of booster transformer B, high voltage silicon rectifier stack D2, electrocution-proof protection resistance R 4 and electrion pin, the termination circuit ground GND of booster transformer B secondary coil L2, the negative pole of another termination high voltage silicon rectifier stack D2 of booster transformer B secondary coil L2, the positive pole of high voltage silicon rectifier stack D2 connects the electrion pin by electrocution-proof protection resistance R 4;

Described 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.

2. air automatic purification device according to claim 1, it is characterized in that: the negative pole of LED connects the colelctor electrode of NPN transistor VT1 in the working state indicating circuit, and the positive pole of LED is by the anodal VCC of resistance R 2 connection circuits.