WO2017152311A1

WO2017152311A1 - Portable air purifier based on principle of differential amplification

Info

Publication number: WO2017152311A1
Application number: PCT/CN2016/075723
Authority: WO
Inventors: 马骏
Original assignee: 马骏
Priority date: 2016-03-05
Filing date: 2016-03-05
Publication date: 2017-09-14

Abstract

A portable air purifier based on the principle of differential amplification, comprising a shell (1), an air inlet (7) arranged on the side of the shell (1), an air outlet (9) arranged on the top of the shell (1), and a storage battery (10) arranged at the rear of the shell (1), the inner side of the air inlet (7) being provided with a first sensor (6), and the inner side of the air outlet 9) being provided with a second sensor (8); the present portable air purifier based on the principle of differential amplification, by means of the first sensor (6) and the second sensor (8), converts air detection results into electrical signals and inputs same into a differential amplification circuit, uses a voltmeter (V) to measure the amplified voltage difference between an emitter of a first transistor (T1) and an emitter of a second transistor (T2), and outputs the comparison results to a display screen (2), facilitating observation of the degree of purification; in addition, by means of charging the storage battery (10) a positive electrode plate (13), a negative electrode plate (15), and an electrolyte react and convert electrical energy into chemical energy; in places far from power supply facilities, the chemical energy is converted into electrical energy to operate the air purifier and improve the air, increasing the flexibility of use of the air purifier.

Description

Portable air purifier based on differential amplification principle

Technical field

The invention relates to a portable air purifier based on the principle of differential amplification.

Background technique

With the development of society, environmental problems are becoming more and more serious, and air quality is getting worse. In order to improve the quality of life, in daily life, people usually choose to use air purifiers to purify the surrounding air.

At present, the types of air purifiers produced on the market have many functions and have certain purification effects. However, during the working process of the air purifier, due to the lack of real-time monitoring of the surrounding air, the user cannot have the most intuitive understanding of the purifying effect of the air purifier and the degree of purification of the surrounding air, thus greatly reducing the air purifier. Practicality, at the same time, because the work of air purifiers requires power supply, and the air purifiers on the market lack the ability to work continuously, this has a certain impact on the practicality of the air purifier, which limits its marketing value.

Summary of the invention

The technical problem to be solved by the present invention is to provide a portable air purifier with real-time monitoring capability and sustainable working ability based on differential amplification principle in order to overcome the deficiencies in the prior art that it is difficult to observe the purification effect and lack of sustainable working ability. .

The technical solution adopted by the present invention to solve the technical problem thereof is: a portable air purifier based on the principle of differential amplification, comprising a casing, an air inlet disposed at a side of the casing, an air outlet provided at a top of the casing, and a setting a battery on the back of the housing, a first sensor is disposed inside the air inlet, and a second sensor is disposed inside the air outlet;

The display is provided with a display screen, a control panel, an indicator light and a switch, the display screen is located at an upper part of the front surface of the housing, the control panel is located at a lower right side of the display screen, and the indicator light and the switch are located at the control panel. Left side

a central processing unit and a differential amplification module are disposed in the housing, the differential amplification module is connected to a central processing unit, and the display screen, the control panel, the indicator light, the switch, the first sensor and the second sensor are all connected to the central processing unit. Electrically connecting, the differential amplification module includes a differential amplification circuit, and the differential amplification circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, and a second transistor And a voltmeter, the base of the first transistor is connected to the second resistor, the base of the second transistor is connected to the third resistor, the emitter of the first transistor and the second three The emitter of the pole tube is externally connected to a -15V DC voltage source through a first resistor, and the collector of the first transistor is connected to the collector of the second transistor through a voltmeter, the set of the first transistor The electrode is externally connected to the +15V DC voltage source through the fourth resistor, and the collector of the second transistor is externally connected to the +15V DC voltage source through the fifth resistor, and the resistance of the second resistor is equal to the resistance of the third resistor. The resistance of the fourth resistor is The resistance of the resistor is equal to five, and the voltmeter are electrically connected with the central processor;

The battery includes a positive electrode plate, a negative electrode plate, a separator, a positive terminal, a negative terminal, a liquid inlet cover, a cover and an outer casing, and the positive terminal, the negative terminal and the liquid inlet cover are both disposed above the cover. The positive electrode plate, the separator and the negative electrode are disposed under the cover, the separator is disposed between the positive electrode and the negative electrode, and the positive terminal is electrically connected to the positive electrode, the negative terminal The battery cover is electrically connected to the negative electrode, and the cover is disposed above the outer casing, and the outer casing is provided with an electrolyte.

Preferably, in order to achieve a variety of charging, the battery is provided with a charging interface and a USB interface.

Preferably, in order to stabilize the operating voltage during discharge, the material of the positive electrode plate 13 is P _b O ₂ , the material of the negative electrode plate is P _b , and the electrolyte is concentrated sulfuric acid having a density of 1.30 g/cm ³ . .

Preferably, in order to achieve charge and discharge, the bottom end of the positive electrode plate and the bottom end of the negative electrode plate are both disposed in the electrolyte.

Preferably, in order to enhance corrosion resistance, the material of the separator is glass fiber.

Preferably, in order to ensure the balance of the air pressure inside and outside the casing, the liquid inlet cover is provided with a vent hole.

Preferably, the first triode and the second triode are both PNP triodes.

The invention has the beneficial effects that the portable air purifier based on the principle of differential amplification converts the air detection result into an electric signal into the differential amplifying circuit through the first sensor and the second sensor, and measures the first triode emission using the voltmeter. The differential pressure between the pole and the second triode emitter is outputted to the display screen to facilitate the observation of the degree of purification. Moreover, by charging the battery, the positive electrode plate, the negative electrode plate and the electrolyte occur. The reaction converts electrical energy into chemical energy, turning chemical energy into electrical energy away from the power supply facility to operate the air purifier, improving the air, and increasing the flexibility of the air purifier application.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a front elevational view of a portable air purifier based on the differential amplification principle of the present invention;

2 is a rear elevational view of the portable air purifier based on the differential amplification principle of the present invention;

3 is a circuit schematic diagram of a differential amplifying circuit of a portable air purifier based on the differential amplification principle of the present invention;

4 is a schematic structural view of a battery of a portable air purifier based on the differential amplification principle of the present invention;

In the figure: 1. housing, 2. display, 3. control panel, 4. indicator, 5. switch, 6. first sensor, 7. air inlet, 8. second sensor, 9. switch, 10 .Battery, 11. Charging interface, 12.USB interface, 13. Positive electrode board, 14. Partition, 15. Negative board, 16. Case, 17. Positive terminal, 18. Negative terminal, 19. Filling cap , 20. cover, R1. first resistance, R2. second resistance, R3. third resistance, R4. fourth resistance, R5. fifth resistance, T1. first triode, T2. second three pole Tube, V. voltmeter.

detailed description

The invention will now be described in further detail with reference to the drawings. The drawings are simplified schematic diagrams, and only the basic structure of the present invention is illustrated in a schematic manner, and thus only the configurations related to the present invention are shown.

As shown in FIG. 1-4, a portable air purifier based on the differential amplification principle includes a housing 1, an air inlet 7 disposed at a side of the housing 1, an air outlet 9 disposed at the top of the housing 1, and a setting The battery 10 on the back of the housing 1, the inside of the air inlet 7 is provided with a first sensor 6, the inside of the air outlet 9 is provided with a second sensor 8;

The housing 1 is provided with a display screen 2, a control panel 3, an indicator light 4 and a switch 5, the display screen 2 is located at the upper part of the front side of the housing 1, and the control panel 3 is located at the lower right side of the display screen 2, The indicator light 4 and the switch 5 are located on the left side of the control panel 3;

The housing 1 is provided with a central processing unit and a differential amplification module. The differential amplification module is connected to a central processing unit. The display screen 2, the control panel 3, the indicator light 4, the switch 5, the first sensor 6 and the The two sensors 8 are electrically connected to the central processing unit, and the differential amplification module includes a differential amplifying circuit, and the differential amplifying circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor. R5, the first transistor T1, the second transistor T2 and the voltmeter V, the base of the first transistor T1 is connected to the second resistor R2, and the base of the second transistor T2 is The third resistor R3 is connected, and the emitter of the first transistor T1 and the emitter of the second transistor T2 are externally connected to a -15V DC voltage source through the first resistor R1, and the set of the first transistor T1 The electrode is connected to the collector of the second transistor T2 through the voltmeter V. The collector of the first transistor T1 is externally connected to the +15V DC voltage source through the fourth resistor R4, and the set of the second transistor T2 The electrode is externally connected to the +15V DC voltage power supply through the fifth resistor R5, and the resistance of the second resistor R2 is the third power Equivalent resistance R3, the resistance value of the fifth resistor R5 is equal to the resistance of the fourth resistor R4, the voltmeter V is connected electrically with the central processor;

The battery 10 includes a positive electrode plate 13, a negative electrode plate 15, a separator 14, a positive terminal 17, a negative terminal 18, a liquid inlet cover 19, a cover 20 and a casing 16, and the positive terminal 17 and the negative terminal 18 are provided. And the liquid inlet cover 19 are disposed above the cover 20, and the positive electrode plate 13, the separator 14 and the negative electrode plate 15 are respectively disposed under the cover 20, and the separator 14 is disposed on the positive electrode plate 13 and the negative electrode In the middle of the electric board 15, the positive terminal 17 is electrically connected to the positive electrode plate 13, the negative terminal 18 is electrically connected to the negative electrode plate 15, and the case cover 20 is disposed above the outer casing 16, and the outer casing 16 is provided therein. Electrolyte.

Preferably, in order to achieve a variety of charging, the battery 10 is provided with a charging interface 11 and a USB interface 12.

Preferably, in order to stabilize the operating voltage during discharge, the material of the positive electrode plate 13 is P _b O ₂ , the material of the negative electrode plate 15 is P _b , and the electrolyte is concentrated at a density of 1.30 g/cm ³ . sulfuric acid.

Preferably, in order to achieve charge and discharge, the bottom end of the positive electrode plate 13 and the bottom end of the negative electrode plate 15 are both disposed in the electrolytic solution.

Preferably, in order to enhance corrosion resistance, the material of the separator 14 is glass fiber.

Preferably, in order to ensure the balance of the air pressure inside and outside the outer casing 16, the liquid inlet cover 19 is provided with a vent hole.

Preferably, the first transistor T1 and the second transistor T2 are both PNP transistors.

When the air purifier performs data analysis, the first sensor 6 at the air inlet 7 detects the inflowing raw air, and transmits the detection result into the differential amplifier circuit and one end of the third resistor R3 in the form of an electric signal. The second sensor 8 at the air outlet 9 detects the outflowing process air, and transmits the detection result to the other end of the differential amplifier circuit connected to the second resistor R2 in the form of an electrical signal, according to the first transistor T1. The emitters of the emitter and the second transistor T2 are externally connected to the -15V DC voltage source through the first resistor R1, and the current through the base of the first transistor T1 and the base of the second transistor T2 can be determined according to the triode The current amplification characteristic determines the collector current through the first transistor T1 and the collector current of the second transistor T2, and measures the current between the collector of the first transistor T1 and the collector of the second transistor T2 through the voltmeter V. The pressure difference, the data is transmitted to the display 2 display, which is convenient for people to observe the purification effect, the more the data Large, it means that the purification effect is better.

When the air purifier is in operation, the electric energy consumed is provided by the battery 10. When the battery 10 performs a discharge operation, the positive electrode plate 13 in the battery 10 is oxidized with the electrolyte in the outer casing 16 to obtain electrons, and the negative electrode plate 15 and the electrolyte The reduction reaction occurs, the electrons are lost, and the positive electrode plate 13 chemically reacts with the negative electrode plate 15 through the electrolyte to convert the chemical energy into electrical energy, and the electric energy is released through the positive terminal 17 and the negative terminal 18, and when the battery 10 is charged, the chemical The reaction proceeds in the reverse direction, and the electric energy is converted into chemical energy to realize the storage of electric energy. The electric purifier can be continuously operated by repeated charging and discharging of the battery 10.

Compared with the prior art, the portable air purifier based on the principle of differential amplification converts the air detection result into an electric signal input to the differential amplifying circuit through the first sensor 6 and the second sensor 8, and measures the first three using the voltmeter V. The differential pressure between the emitter of the pole tube T1 and the emitter of the second transistor T2 is amplified, and the comparison result is outputted to the display screen to facilitate the observation of the degree of purification. Moreover, by charging the battery 10, the positive electrode plate 13 and the negative electrode are provided. The reaction between the electric board 15 and the electrolyte converts electrical energy into chemical energy, and the chemical energy is converted into electric energy in a place away from the power supply facility to operate the air purifier, and the air is improved, thereby improving the flexibility of the air purifier application.

In view of the above-described embodiments of the present invention, various changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and the technical scope thereof must be determined according to the scope of the claims.

Claims

A portable air purifier based on the principle of differential amplification, comprising a housing (1), an air inlet (7) disposed at a side of the housing (1), and an outlet disposed at a top of the housing (1) a gas port (9) and a battery (10) disposed on the back of the casing (1), a first sensor (6) is disposed inside the air inlet (7), and a second sensor is disposed inside the air outlet (9) (8);

The housing (1) is provided with a display screen (2), a control panel (3), an indicator light (4) and a switch (5), and the display screen (2) is located at the upper part of the front surface of the housing (1). The control panel (3) is located on the lower right side of the display screen (2), and the indicator light (4) and the switch (5) are located on the left side of the control panel (3);

A central processing unit and a differential amplification module are disposed in the housing (1), the differential amplification module is connected to a central processing unit, and the display screen (2), the control panel (3), the indicator light (4), and the switch (5) The first sensor (6) and the second sensor (8) are both electrically connected to the central processing unit, the differential amplification module includes a differential amplifying circuit, and the differential amplifying circuit includes a first resistor (R1) and a second Resistor (R2), third resistor (R3), fourth resistor (R4), fifth resistor (R5), first triode (T1), second triode (T2), and voltmeter (V), a base of the first transistor (T1) is connected to a second resistor (R2), and a base of the second transistor (T2) is connected to a third resistor (R3), the first three poles The emitter of the tube (T1) and the emitter of the second transistor (T2) are externally connected to a -15V DC voltage source through a first resistor (R1), and the collector of the first transistor (T1) passes a voltmeter (V) is connected to the collector of the second transistor (T2), and the collector of the first transistor (T1) is externally connected to the +15V DC voltage source through the fourth resistor (R4), the second three poles The collector of the tube (T2) is externally connected to the +15V through the fifth resistor (R5). a voltage source, the resistance of the second resistor (R2) is equal to the resistance of the third resistor (R3), and the resistance of the fourth resistor (R4) is equal to the resistance of the fifth resistor (R5). The voltmeter (V) is electrically connected to the central processing unit;

The battery (10) includes a positive electrode plate (13), a negative electrode plate (15), a separator (14), a positive terminal (17), a negative terminal (18), a liquid inlet cover (19), and a cover ( 20) and the outer casing (16), The positive terminal (17), the negative terminal (18) and the liquid inlet cover (19) are both disposed above the cover (20), the positive electrode (13), the separator (14) and the negative electrode (15) Both are disposed under the cover (20), and the partition (14) is disposed between the positive electrode (13) and the negative electrode (15), and the positive terminal (17) and the positive electrode (13) are electrically In connection, the negative terminal (18) is electrically connected to the negative electrode plate (15), and the cover (20) is disposed above the outer casing (16), and the outer casing (16) is provided with an electrolyte.
The portable air purifier based on the principle of differential amplification according to claim 1, wherein the battery (10) is provided with a charging interface (11) and a USB interface (12).
Materials portable air purifier of claim 1 based on the principle of differential amplifier as claimed in claim, wherein the material of the positive electrode plate (13) is a P b O 2, a negative electrode plate (15) is P b The electrolyte was concentrated sulfuric acid having a density of 1.30 g/cm 3 .
The portable air purifier based on the differential amplification principle according to claim 1, wherein a bottom end of the positive electrode plate (13) and a bottom end of the negative electrode plate (15) are disposed in the electrolyte.
A portable air purifier based on the principle of differential amplification according to claim 1, wherein the material of the partition (14) is glass fiber.
The portable air purifier based on the principle of differential amplification according to claim 1, wherein the liquid inlet cover (19) is provided with a vent hole.
The portable air purifier based on the principle of differential amplification according to claim 1, wherein the first triode (T1) and the second triode (T2) are both PNP triodes.