TWI805907B - Gas detection and purification device - Google Patents

Abstract

A gas detection and purification device disposed in a car space is provided and includes a case, a purification module, a gas guiding machine and a gas detecting module. The case includes a gas inlet and a gas outlet. A gas passage is disposed between the gas inlet and the gas outlet. The purification module is disposed in the gas passage for purifying the gas guided by the gas passage. The gas guiding machine is disposed in the gas passage and on a side of the purification module to guide the gas from the gas inlet to the purification module for purifying and to discharge the gas from the gas outlet. The gas detecting module is disposed in the gas passage to detect the gas guided from the exterior of the case for obtaining a gas detecting data.

Description

Gas detection and purification device

This case relates to a gas detection and purification device, especially a gas detection and purification device that is applied in vehicles and indoor spaces.

Modern people pay more and more attention to the quality of gases around their lives, such as carbon monoxide, carbon dioxide, volatile organic compounds (Volatile Organic Compound, VOC), PM2.5, nitric oxide, sulfur monoxide and other gases, even in the gas The particles contained in it will be exposed in the environment to affect human health, and even endanger life in serious cases. Therefore, the quality of ambient gas has attracted the attention of various countries. At present, how to monitor and avoid being far away is a topic that urgently needs to be paid attention to.

How to confirm the quality of the gas, it is feasible to use a gas sensor to monitor the surrounding environment gas, if it can provide real-time monitoring information to warn the people in the environment, they can prevent or escape in time to avoid suffering from the environment Gas exposure can cause human health effects and injuries. Using gas sensors to monitor the surrounding environment can be said to be a very good application, and gas detection and purification devices can provide clean air quality for modern people driving or indoors to avoid breathing The purification solution of harmful gases, which can monitor the air quality anytime and anywhere in real time, and can provide the benefit of purifying the air quality, is the main topic of research and development in this case.

The main purpose of this case is to provide a gas detection and purification device, using the gas detection module to monitor the user's ambient air quality in the car at any time, and to provide a solution for purifying the air quality with the purification module, so the gas detection module The application of the group and the purification module can avoid the use of The person in the car or indoors breathes harmful gas, and can get the information in real time, and inform the user in the car or in the indoor environment with a warning, and can take preventive measures in time.

A broad implementation aspect of this case is a gas detection and purification device, comprising: a housing with at least one gas inlet and at least one gas outlet, and a gas flow channel is provided between the gas inlet and the gas outlet ; a purification module set in the gas flow channel to filter the gas introduced by the gas flow channel; a guide fan set in the gas flow channel and set on one side of the purification module to guide the gas Introduced from the air inlet through the purification module for filtration and purification, and finally exported from the air outlet; a gas detection module is set in the gas flow channel, including a control circuit board, a gas detection body, a micro A processor, a communicator, a power supply unit, and a battery are used to detect the gas introduced outside the casing to obtain a gas detection data; wherein, the gas detection module obtains the detected gas The gas detection data is processed to control the operation of starting or closing the guide fan, and the guide fan performs the start operation to guide the gas from the air inlet to pass through the purification module for filtration and purification, and finally It is led out from the gas outlet and directly corresponds to the user to provide purified gas.

1: shell

11: air inlet

12: Air outlet

13: Gas channel

2: Purification module

2a: Filter unit

2b: Photocatalyst unit

21b: Photocatalyst

22b: Ultraviolet lamp

2c: Optical plasma unit

21c: Nano light pipe

2d: Negative ion unit

21d: electrode wire

22d: Dust collecting plate

23d: Boost power supply

2e: Plasma ion unit

21e: The first protective net in the electric field

22e: adsorption filter

23e: High voltage discharge electrode

24e: The second electric field protection net

25e: Boost power supply

3: Guide fan

30: Actuate the pump

301: Inlet plate

301a: inlet hole

301b: bus bar

301c: confluence chamber

302: Resonant film

302a: hollow hole

302b: Movable part

302c: fixed part

303:Piezoelectric Actuator

303a: hoverboard

303b: outer frame

303c: bracket

303d: Piezoelectric elements

303e: Clearance

303f: convex part

304: the first insulating sheet

305: conductive sheet

306: second insulating sheet

307: chamber space

4: Gas detection module

4a: Control circuit board

4b: Gas detection body

41: base

411: first surface

412: second surface

413:Laser setting area

414: Air intake groove

414a: Air intake port

414b: light-transmitting window

415: Air guide assembly bearing area

415a: ventilation hole

415b: positioning bump

416: Outlet groove

416a: Outlet port

416b: the first interval

416c: the second interval

417: Light trap area

417a: Optical Trap Structure

42:Piezoelectric actuation element

421: Fumarole

421a: suspended film

421b: hollow hole

421c: Void

422: cavity frame

423: actuating body

423a: Piezoelectric carrier plate

423b: Adjust the resonance plate

423c: piezoelectric plate

423d: piezoelectric pin

424: Insulation frame

425: Conductive frame

425a: conductive pin

425b: conductive electrode

426: Resonance chamber

427: Air flow chamber

43:Drive circuit board

44:Laser components

45:Particle sensor

46: outer cover

461: side panel

461a: Air intake frame opening

461b: Outlet frame opening

47a: First VOC sensor

47b: Second VOC sensor

4c: Microprocessor

4d: Communicator

4e: Power supply unit

4f: battery

5: External device

D: diameter

L: Length

W: width

H: height

d: light trap distance

Figure 1A is a perspective view of a preferred embodiment of the gas detection and purification device of the present invention.

Figure 1B is a perspective view of another preferred embodiment of the gas detection and purification device of the present invention.

Figure 2A is a schematic cross-sectional view of the filter unit of the purification module of the gas detection and purification device of this case.

Fig. 2B is a schematic cross-sectional view of a purification module composed of a filter unit and a photocatalyst unit in Fig. 2A.

Fig. 2C is a schematic cross-sectional view of a purification module composed of a filter unit and a light plasma unit in Fig. 2A.

Figure 2D is a schematic cross-sectional view of the purification module composed of the filter unit and the negative ion unit in Figure 2A.

FIG. 2E is a schematic cross-sectional view of a purification module composed of a filter unit and a plasma ion unit in FIG. 2A.

Fig. 3A is an exploded schematic view of related components in the form of an actuating pump in which the air guide fan of the gas detection and purification device is viewed from a frontal angle.

Figure 3B is an exploded schematic view of related components in the form of an actuating pump in which the air guide fan of the gas detection and purification device is viewed from a rear angle.

Figure 4A is a schematic cross-sectional view of the actuating pump of the gas detection and purification device of this case.

Figure 4B is a schematic cross-sectional view of another embodiment of the actuating pump of the gas detection and purification device of the present case.

Fig. 4C to Fig. 4E are schematic diagrams of the actuating pump of the gas detection and purification device in Fig. 4A.

Fig. 5A is a three-dimensional schematic diagram of the appearance of the gas detection module of this case.

Fig. 5B is a perspective schematic view of the appearance of the gas detection body in Fig. 5A.

Fig. 5C is an exploded perspective view of the gas detection body in Fig. 5A.

Fig. 6A is a three-dimensional schematic view of the base of the gas detection main body of this case.

Fig. 6B is a perspective view from another angle of the base of the gas detection main body of this case.

Fig. 7 is a three-dimensional schematic diagram of the base of the gas detection main body accommodating the laser component and the particle sensor.

Figure 8A is an exploded perspective view of the piezoelectric actuator combined with the base of the gas detection body of this case.

Figure 8B is a three-dimensional schematic diagram of the piezoelectric actuator combined with the base of the gas detection main body of this case.

Fig. 9A is an exploded perspective view of the piezoelectric actuator of the main body of the gas detection in this case.

Fig. 9B is an exploded perspective view of the piezoelectric actuator of the main body of the gas detection in another angle.

Fig. 10A is a schematic cross-sectional view of the combination of the piezoelectric actuator of the gas detection main body and the bearing area of the gas guide component in this case.

Fig. 10B and Fig. 10C are schematic diagrams showing the operation of the piezoelectric actuator in Fig. 10A.

Figure 11A to Figure 11C are schematic diagrams of the gas path of the gas detection body.

Figure 12 is a schematic diagram of the path of the beam emitted by the laser component of the gas detection main body of this case.

Fig. 13 is a block diagram showing the relationship between the control circuit board and related components of the gas detection and purification device.

Some typical embodiments embodying the features and advantages of the present application will be described in detail in the description in the following paragraphs. It should be understood that the present case can have various changes in different aspects without departing from the scope of the present case, and the descriptions and diagrams therein are used for illustration in nature rather than limiting the present case.

Please refer to Figure 1A, Figure 1B and Figure 2A, this case provides a gas detection and purification device, including a housing 1, a purification module 2, a guide fan 3 and a gas detection module 4 . Among them, the design of the housing 1 will take into account the overall structural size that is portable and easy to hold. Therefore, the bottom of the housing 1 adopts a cylindrical shape (as shown in Figure 1A) or a square cylinder (as shown in Figure 1B). Shape design, in particular the size of the overall structure of the shell 1 is as follows: when the bottom of the shell 1 adopts a cylindrical shape, its diameter D is between 40mm and 120mm, the diameter D is 80mm is the best, and the height H is between Between 100mm and 300mm, the best height H is 200mm; when the bottom of the shell 1 adopts a long cylinder shape, its length L is between 40mm and 120mm, the best length L is 80mm, and the width W is between Between 40mm and 120mm, the best width W is 80mm, the height H is between 100mm and 300mm, and the best height H is 200mm. It can be seen from the above that the housing 1 is portable and can be placed in a vehicle interior space (not shown), and the vehicle interior space can be a cup holder, a central storage seat, and a front windshield trim platform and a rear windshield trim One of the platforms; the housing 1 is embedded in a car interior space (not shown), and the car interior space is a sound box, an air-conditioning outlet, a door trim, a car interior panel, a seat, One of a car interior roof, a steering wheel, a storage box, a rear mirror, a sun visor and a central storage seat; or, the housing 1 is portable and placed in the indoor space, and is aligned with the user Gas detection and purification operations.

Also, the above-mentioned housing 1 has at least one air inlet 11 and at least one air outlet 12, in this embodiment, it is an air inlet 11 and an air outlet 12, but it is not limited to this, and the air inlet There is a gas channel 13 between 11 and the gas outlet 12; the above-mentioned purification module 2 is set in the gas channel 13 to filter the gas introduced by the gas channel 13; the above-mentioned guide fan 3 is set in the gas channel 13 , and installed on the side of the purification module 2, the pilot gas is introduced from the air inlet 11 and filtered and purified through the purification module 2, and finally exported from the gas outlet 12; and the above-mentioned gas detection module 4 is arranged on the gas In the channel 13, the gas introduced from the outside of the casing 1 is detected to obtain a gas detection data. In this way, the gas detection module 4 performs calculation processing on the detected gas detection data to control the operation of the air guide fan 3 to start or close, and the air guide fan 3 performs the start operation to guide the gas from the intake air. Port 11 enters and passes through the purification module 2 for filtration and purification, and finally leads out from the air outlet 12, and directly corresponds to the user to provide the purified gas. Therefore, the gas detection and purification device in this case can be installed in the interior space of the car. In the car interior space or general indoor space, use the gas detection module 4 to detect the ambient air quality of the user in the car or indoor space at any time, and use the purification module 2 to provide a solution for purifying the air quality in the car or indoor space A solution to prevent users from breathing harmful gases in the car or indoors.

The above-mentioned purification module 2 is placed in the gas channel 13, which can be implemented in various ways. For example, as shown in FIG. 2A, the purification module 2 is a filter unit 2a. The gas is introduced into the gas channel 13 through the guide fan 3, and the chemical smog, bacteria, dust particles and pollen contained in the gas are absorbed by the filter unit 2a, so as to filter the introduced gas and carry out the effect of filtering and purifying. The unit 2 a can be one of an electrostatic filter, an activated carbon filter, or a high-efficiency filter (High-Efficiency Particulate Air, HEPA). Also, in some embodiments, the cleaning factor of one layer of chlorine dioxide can be coated on the filter screen unit 2a to suppress viruses and bacteria in the gas, so as to inhibit influenza A virus, influenza B virus, enterovirus and norovirus The rate is more than 99%, which helps to reduce the cross-infection of viruses; in other embodiments, the filter unit 2a can be coated with a layer of herbal protection coating extracted from ginkgo and japonica to form a herbal protection and anti-allergic filter , can effectively resist allergies, and can destroy the surface protein of influenza virus (for example: H1N1 influenza virus) passing through the filter; in other embodiments, the filter unit 2a can be coated with silver ions to inhibit viruses and bacteria in the gas.

As shown in Figure 2B, the purification module 2 can be in the form of a filter unit 2a and a photocatalyst unit 2b. The photocatalyst unit 2b includes a photocatalyst 21b and an ultraviolet lamp 22b, which are respectively arranged in the gas flow channel 13 and keep a distance , so that the gas is introduced into the gas flow channel 13 through the control of the guide fan 3, and the photocatalyst 21b is irradiated by the ultraviolet lamp 22b to convert light energy into chemical energy, thereby decomposing harmful gases and disinfecting the gas, so as to achieve filtration and introduction. Gas, for the effect of filtration and purification.

As shown in FIG. 2C , the purification module 2 can be in the form of a filter unit 2 a combined with a photoplasma unit 2 c , and the photoplasma unit 2 c includes a nanometer light pipe 21 c disposed in the gas channel 13 . The gas is guided into the gas flow channel 13 through the control of the air guide fan 3, and irradiated by the nano light tube 21c, so that the oxygen molecules and water molecules in the gas can be decomposed into highly oxidative light plasma, and form a light plasma with the ability to destroy organic molecules. Ion air flow decomposes gas molecules containing volatile formaldehyde, toluene, and volatile organic compounds (Volatile Organic Compounds, VOC) in the gas into water and carbon dioxide, so as to filter the introduced gas and achieve the effect of filtration and purification.

As shown in Figure 2D, the purification module 2 can be a filter unit 2a with a negative ion unit 2d, and the negative ion unit 2d includes at least one electrode wire 21d, at least one dust collecting plate 22d and a booster power supply 23d, Each electrode line 21d and each dust collecting plate 22d are set in the gas flow channel 13, and the booster power supply 23d provides each electrode line 21d with high voltage, and each dust collecting plate 22d has a negative charge to allow the gas to pass through. When the guide fan 3 is controlled and introduced into the gas flow channel 13, it discharges through each electrode wire 21d at high voltage, so that the positively charged particles contained in the gas can be attached to each negatively charged dust collecting plate 22d to achieve filtration. The imported gas has the effect of filtering and purifying.

As shown in Figure 2E, the purification module 2 can be a filter unit 2a with a plasma ion unit 2e. The plasma ion unit 2e includes a first electric field protection net 21e, an adsorption filter 22e, a high-voltage discharge electrode 23e, An electric field second guard net 24e and a boost power supply 25e, wherein the first electric field guard net 21e, the adsorption filter screen 22e, the high voltage discharge electrode 23e and the electric field second guard net 24e are arranged in the gas flow channel 13, and the adsorption filter screen The net 22e and the high-voltage discharge electrode 23e are sandwiched between the first electric field protection net 21e and the second electric field protection net 24e, and the booster power supply 25e provides the high-voltage discharge electrode 23e with high voltage to generate a plasma ion High-voltage plasma column, when the gas is controlled by the guide fan 3 and introduced into the gas flow channel 13, the oxygen molecules and water molecules contained in the gas are ionized through the plasma ions to form cations (H ⁺ ) and anions (O ₂ ^- ), and the substances with water molecules attached to the ions are attached to the surface of viruses and bacteria, and under the action of chemical reactions, they will be converted into strong oxidizing active oxygen (hydroxyl, OH group), thereby depriving the surface of viruses and bacteria Decompose the hydrogen of protein (oxidative decomposition) to achieve the effect of filtering and purifying the introduced gas.

The above-mentioned guide fan 3 can be a fan, for example, a vortex fan, a centrifugal fan, etc., or the guide fan 3 can be an actuating pump 30 as shown in Fig. 3A, Fig. 3B, Fig. 4A and Fig. 4B. The actuating pump 30 mentioned above is composed of an inlet plate 301 , a resonant plate 302 , a piezoelectric actuator 303 , a first insulating plate 304 , a conductive plate 305 and a second insulating plate 306 stacked in sequence. Wherein the inlet plate 301 has at least one inlet hole 301a, at least one busbar groove 301b and a confluence chamber 301c, the inlet hole 301a is used to introduce gas, the inlet hole 301a corresponds to the busbar groove 301b, and the busbar groove 301b Confluence to the confluence chamber 301c, so that the gas introduced in the inlet hole 301a can be confluent Flow into the confluence chamber 301c. In this embodiment, the number of the inlet holes 301a and the busbar grooves 301b is the same, and the number of the inlet holes 301a and the busbar grooves 301b are respectively 4, but it is not limited to this, and the 4 inlet holes 301a respectively pass through There are four busbar grooves 301b, and the four busbar grooves 301b are connected to the busbar chamber 301c.

Please refer to Fig. 3A, Fig. 3B and Fig. 4A, the above-mentioned resonant plate 302 is assembled on the inlet plate 301 by bonding, and the resonant plate 302 has a hollow hole 302a, a movable part 302b and A fixed part 302c, the hollow hole 302a is located at the center of the resonant plate 302 and corresponds to the confluence chamber 301c of the inlet plate 301, and the movable part 302b is arranged around the hollow hole 302a and opposite to the confluence chamber 301c, The fixing portion 302 c is disposed on the outer peripheral portion of the resonant plate 302 and is attached to the inlet plate 301 .

Please continue to refer to Figure 3A, Figure 3B and Figure 4A, the above-mentioned piezoelectric actuator 303 includes a suspension plate 303a, an outer frame 303b, at least one bracket 303c, a piezoelectric element 303d, and at least one gap 303e and a convex portion 303f. Among them, the suspension board 303a is a square shape. The reason why the suspension board 303a adopts a square shape is that compared with the design of the circular suspension board, the structure of the square suspension board 303a obviously has the advantage of saving power, because the operation at the resonant frequency For capacitive loads, the power consumption will increase with the increase of the frequency, and because the resonance frequency of the square suspension board 303a with side length is obviously lower than that of the circular suspension board, its relative power consumption is also significantly lower, that is, the one used in this case The suspension board 303a of square design has the advantage of saving electricity; the outer frame 303b is arranged around the outside of the suspension board 303a; at least one bracket 303c is connected between the suspension board 303a and the outer frame 303b to provide elastic support for the suspension board 303a Support force; and a piezoelectric element 303d has a side length, the side length is less than or equal to the side length of the suspension plate 303a of the suspension plate 303a, and the piezoelectric element 303d is attached to one surface of the suspension plate 303a for applying voltage to drive the suspension board 303a to bend and vibrate; and at least one gap 303e is formed between the suspension board 303a, the outer frame 303b and the support 303c for the passage of gas; the convex part 303f is arranged on the suspension board 303a On the other surface opposite to the surface of the electric element 303d, in this embodiment, the protrusion 303f can be integrally formed and protruded on the opposite surface of the attached piezoelectric element 303d by using an etching process on the suspension plate 303a. A convex structure is formed on a surface.

Please continue to refer to Figure 3A, Figure 3B and Figure 4A, the above-mentioned inlet plate 301, resonant plate 302, piezoelectric actuator 303, first insulating plate 304, conductive plate 305 and second insulating plate 306 Sequential stacking and combination, wherein a cavity space 307 needs to be formed between the suspension plate 303a of the piezoelectric actuator 303 and the resonant plate 302, and the cavity space 307 can be used for the outer frame of the resonant plate 302 and the piezoelectric actuator 303 The gap between 303b is filled with a material, such as: conductive glue, but not limited thereto, so that a certain depth can be maintained between the resonant plate 302 and one surface of the suspension plate 303a to form a cavity space 307, which can then guide The gas flows more rapidly, and because the suspension plate 303a and the resonant plate 302 keep an appropriate distance to reduce the contact interference between each other, the noise generation can be reduced. Of course, in another embodiment, the piezoelectric actuator 303 can also be used. The height of the outer frame 303b is increased to reduce the thickness of the conductive glue filled in the gap between the resonant plate 302 and the outer frame 303b of the piezoelectric actuator 303, so that the overall structure of the actuating pump will not be affected by the heat caused by the filling material of the conductive glue. The pressing temperature and cooling temperature are indirectly affected, so as to prevent the filling material of the conductive adhesive from affecting the actual spacing of the cavity space 307 after molding due to thermal expansion and contraction factors, but it is not limited thereto. In addition, the chamber space 307 will affect the transmission effect of the actuation pump 30 , so maintaining a constant chamber space 307 is very important for the actuation pump 30 to provide stable transmission efficiency.

Therefore, as shown in FIG. 4B, in some other embodiments of the piezoelectric actuator 303, the suspension plate 303a can be stamped and formed to extend outward for a distance, and the outward extension distance can be formed on the suspension plate by at least one bracket 303c. 303a and the outer frame 303b are adjusted so that the surface of the convex portion 303f on the suspension plate 303a and the surface of the outer frame 303b form a non-coplanar structure, and a small amount of filling is applied to the assembly surface of the outer frame 303b Material, such as: conductive glue, the piezoelectric actuator 303 is bonded to the fixed part 302c of the resonant plate 302 by hot pressing, so that the piezoelectric actuator 303 It can be assembled and combined with the resonant plate 302, so that the suspension plate 303a of the above-mentioned piezoelectric actuator 303 is adopted to form a structural improvement of a cavity space 307 by stamping, and the required cavity space 307 can be adjusted by adjusting the piezoelectric actuator. The suspension plate 303a of the actuator 303 is stamped to form a distance, which effectively simplifies the structural design of the adjustment chamber space 307, and also achieves the advantages of simplifying the process and shortening the process time. In addition, the first insulating sheet 304 , the conductive sheet 305 and the second insulating sheet 306 are frame-shaped thin sheets, which are sequentially stacked on the piezoelectric actuator 303 to form the overall structure of the actuating pump 30 .

In order to understand the above-mentioned actuating pump 30 to provide the output action mode of gas transmission, please continue to refer to Figure 4C to Figure 4E, please refer to Figure 4C first, the piezoelectric element 303d of the piezoelectric actuator 303 is applied with a driving voltage Afterwards, deformation occurs to drive the suspension plate 303a to move downwards. At this time, the volume of the chamber space 307 is increased, and a negative pressure is formed in the chamber space 307, so that the gas in the confluence chamber 301c is drawn into the chamber space 307 and resonates at the same time. The plate 302 is displaced downward synchronously under the influence of the resonance principle, which increases the volume of the confluence chamber 301c, and because the gas in the confluence chamber 301c enters the chamber space 307, the confluence chamber 301c is also under negative pressure State, and then through the inlet hole 301a and the confluence row groove 301b to absorb gas into the confluence chamber 301c; please refer to Figure 4D again, the piezoelectric element 303d drives the suspension plate 303a to move upwards, compressing the chamber space 307, similarly, The resonant plate 302 is displaced upward by the suspension plate 303a due to resonance, forcing the gas in the cavity space 307 to be pushed downward through the gap 303e to achieve the effect of gas transmission; finally, please refer to Figure 4E, when the suspension plate When 303a returns to its original position, the resonant plate 302 is still displaced downward due to inertia. At this time, the resonant plate 302 will move the gas in the compression chamber space 307 to the gap 303e, and increase the volume in the confluence chamber 301c, allowing the gas It can continuously gather in the confluence chamber 301c through the inlet hole 301a and the confluence row groove 301b, and continuously repeat the above-mentioned actuation pump 30 shown in Figure 4C to Figure 4E to provide gas transmission action steps, so that the actuation The pump 30 can make the gas continuously enter the inlet plate 301 and resonate from the inlet hole 301a The flow channel formed by the sheet 302 generates a pressure gradient, and then is transmitted downward through the gap 303e, so that the gas flows at a high speed to achieve the actuation operation of the actuating pump 30 to transmit the gas output.

As shown in Figure 5A to Figure 5C, Figure 6A to Figure 6B, Figure 7, Figure 8A to Figure 8B and Figure 13, the gas detection module 4 includes a control circuit board 4a, A gas detection body 4b, a microprocessor 4c, a communicator 4d, a power supply unit 4e and a battery 4f. Among them, the gas detection main body 4b, the microprocessor 4c, the communicator 4d and the power supply unit 4e are packaged on the control circuit board 4a to be electrically connected as one, and the power supply unit 4e provides the starting operation power of the gas detection main body 4b to promote gas detection The main body 4b detects the gas introduced from the casing 1 to obtain gas detection data, and the power supply unit 4e obtains power through an electrical connection with the battery 4f; and the microprocessor 4c receives the gas detection data for calculation and processing and controls the guide The starting or closing state of the blower fan 3 is used to perform gas purification operations, and the communicator 4d receives the gas detection data of the microprocessor 4c, and transmits it to an external device 5 through communication, so that the external device 5 can obtain the gas detection data. One information and one alarm notification. The external device 5 is a mobile device, a cloud processing device or a computer system, etc.; the external communication transmission of the above-mentioned communicator 4d can be through wired communication transmission, for example: USB connection communication transmission, or through wireless communication transmission, for example: Wi-Fi communication transmission, Bluetooth communication transmission, radio frequency identification communication transmission, a near field communication transmission, etc.

As shown in Figures 5A to 5C, Figures 6A to 6B, Figure 7, Figures 8A to 8C, Figures 9A to 9B, and Figures 11A to 11C, the above-mentioned gases The detection body 4 b includes a base 41 , a piezoelectric actuator 42 , a driving circuit board 43 , a laser component 44 , a particle sensor 45 and an outer cover 46 . Wherein, the base 41 has a first surface 411, a second surface 412, a laser setting area 413, an air inlet groove 414, an air guiding component bearing area 415 and an air outlet groove 416. The first surface 411 And the second surface 412 is two opposite surfaces. The laser setting area 413 is hollowed out from the first surface 411 toward the second surface 412 . Also, the outer cover 46 covers the base 41, and has a side plate 461, and the side plate 461 has an air inlet frame opening 461a and an air outlet Frame opening 461b. The intake groove 414 is recessed from the second surface 412 and adjacent to the laser setting area 413 . The air intake groove 414 is provided with an air intake opening 414a, communicated with the outside of the base 41, and corresponds to the air intake frame opening 461a of the outer cover 46, and a light-transmitting window 414b runs through the two side walls, and communicates with the laser setting area 413 connected. Therefore, the first surface 411 of the base 41 is attached and covered by the outer cover 46, and the second surface 412 is attached and covered by the driving circuit board 43, so that the air inlet groove 414 and the driving circuit board 43 jointly define an air inlet. Path (as shown in Figure 7 and Figure 11A).

Also as shown in Figures 6A to 6B, the above-mentioned air guiding component bearing area 415 is formed by the depression of the second surface 412, communicates with the air intake groove 414, and penetrates an air hole 415a at the bottom. The above air outlet groove 416 is provided with an air outlet opening 416a, and the air outlet opening 416a is correspondingly set to the air outlet frame opening 461b of the outer cover 46 . The air outlet groove 416 includes a first section 416b formed by the depression of the first surface 411 corresponding to the vertical projection area of the air guide component bearing area 415, and an area extending from the vertical projection area of the non-air guide component bearing area 415, and The second section 416c formed by hollowing out the first surface 411 to the second surface 412, wherein the first section 416b is connected to the second section 416c to form a step difference, and the first section 416b of the air outlet groove 416 is connected to the bearing area of the air guide assembly The air hole 415a of the 415 communicates with each other, and the second section 416c of the air outlet groove 416 communicates with the air outlet port 416a. Therefore, when the first surface 411 of the base 41 is covered by the cover 46 and the second surface 412 is covered by the drive circuit board 43 , the air outlet groove 416 , the cover 46 and the drive circuit board 43 are combined. Define an outlet path (as shown in Figure 7 to Figure 11C).

As shown in Fig. 5C and Fig. 7, the above-mentioned laser component 44 and particle sensor 45 are all arranged on the drive circuit board 43 and located in the base 41. In order to clearly illustrate the relationship between the laser component 44 and the particle sensor 45 and Because of the position of the base 41, the driving circuit board 43 is deliberately omitted in FIG. 7 . Referring again to Fig. 5C, Fig. 6B, and Fig. 7, the laser assembly 44 is accommodated in the laser installation area 413 of the base 41, and the particle sensor 45 is accommodated in the intake groove 414 of the base 41. , and aligned with the laser assembly 44. In addition, the laser component 44 corresponds to the light-transmitting window 414b, and the light-transmitting window 414b is used for the laser group The laser light emitted by the component 44 passes through, so that the laser light is irradiated into the air intake groove 414 . The beam path emitted by the laser component 44 passes through the light-transmitting window 414 b and forms a direction perpendicular to the air inlet groove 414 . The beam emitted by the laser assembly 44 enters the air intake groove 414 through the light-transmitting window 414b, and the suspended particles contained in the gas in the air intake groove 414 are irradiated. The particle sensor 45 is located at its position in the orthogonal direction to receive the projected light points generated by the scattering for calculation, so as to obtain relevant information on the particle size and concentration of the suspended particles contained in the gas. The suspended particles contained in the gas include bacteria and viruses. Wherein the particle sensor 45 is a PM2.5 sensor.

As shown in Fig. 8A and Fig. 8B, the above-mentioned piezoelectric actuator 42 is accommodated in the air guide assembly bearing area 415 of the base 41. The air guide assembly bearing area 415 is a square, and its four corners are respectively set There is a positioning protrusion 415b, and the piezoelectric actuating element 42 is disposed in the bearing area 415 of the gas guide assembly through four positioning protrusions 415b. In addition, as shown in Figure 6A, Figure 6B, Figure 11B and Figure 11C, the bearing area 415 of the air guide assembly communicates with the intake groove 414, and when the piezoelectric actuator 42 is actuated, the air intake groove 414 is drawn. The gas in 414 enters the piezoelectric actuating element 42 , and the gas passes through the vent hole 415 a of the bearing area 415 of the gas guiding component and enters the gas outlet groove 416 .

As shown in FIG. 5B and FIG. 5C , the cover of the driving circuit board 43 mentioned above is attached to the second surface 412 of the base 41 . The laser component 44 is disposed on the driving circuit board 43 and is electrically connected to the driving circuit board 43 . The particle sensor 45 is also disposed on the driving circuit board 43 and is electrically connected to the driving circuit board 43 . As shown in Figure 5B, when the cover 46 covers the base 41, the air intake frame opening 461a corresponds to the air intake port 414a of the base 41 (as shown in Figure 11A), and the air outlet frame opening 461b corresponds to the base 414a. The outlet port 416a of the seat 41 (shown in Figure 11C).

And referring to FIG. 9A and FIG. 9B , the above-mentioned piezoelectric actuator 42 includes an air jet hole 421 , a cavity frame 422 , an actuating body 423 , an insulating frame 424 and a conductive frame 425 . Wherein, the jet hole sheet 421 is made of a flexible material, and has a suspension sheet 421a, a hollow hole 421b. The suspension piece 421a is a sheet-like structure capable of bending and vibrating. Its shape and size roughly correspond to the inner edge of the air guide component bearing area 415, but not limited thereto. The shape of the suspension piece 421a can also be square, circular, or oval. , triangle and polygon; the hollow hole 421b runs through the center of the suspension piece 421a for gas circulation.

Referring also to Fig. 9A, Fig. 9B and Fig. 10A, the cavity frame 422 mentioned above is stacked on the air-jet hole sheet 421, and its shape corresponds to the air-jet hole sheet 421. The actuating body 423 is stacked on the cavity frame 422 and defines a resonant cavity 426 between the cavity frame 422 and the suspension piece 421a. The insulating frame 424 is stacked on the actuating body 423 , and its appearance is similar to that of the air injection hole sheet 421 . The conductive frame 425 is stacked on the insulating frame 424, its appearance is similar to the insulating frame 424, and the conductive frame 425 has a conductive pin 425a and a conductive electrode 425b, the conductive pin 425a extends outward from the outer edge of the conductive frame 425, conducts electricity The electrodes 425b extend inward from the inner edge of the conductive frame 425 . In addition, the actuating body 423 further includes a piezoelectric carrier plate 423a, an adjustment resonant plate 423b, and a piezoelectric plate 423c. The piezoelectric carrier 423 a is carried and stacked on the cavity frame 422 . The adjustment resonance plate 423b is carried and stacked on the piezoelectric carrier plate 423a. The piezoelectric plate 423c is carried and stacked on the adjustment resonant plate 423b. The adjustment resonant plate 423 b and the piezoelectric plate 423 c are housed in the insulating frame 424 , and are electrically connected to the piezoelectric plate 423 c by the conductive electrode 425 b of the conductive frame 425 . Wherein, the piezoelectric carrier 423a and the adjustment resonant plate 423b are both made of conductive materials, the piezoelectric carrier 423a has a piezoelectric pin 423d, and the piezoelectric pin 423d is connected to the conductive pin 425a to drive the circuit board 43 The driving circuit (not shown) on the top is used to receive the driving signal (driving frequency and driving voltage), and the driving signal can be transmitted by the piezoelectric pin 423d, the piezoelectric carrier plate 423a, the adjustment resonant plate 423b, the piezoelectric plate 423c, the conductive electrode 425b, the conductive frame 425, and the conductive pin 425a form a loop, and the insulating frame 424 isolates the conductive frame 425 from the actuating body 423 to avoid short circuit and transmit the driving signal to the piezoelectric plate 423c. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 423c generates a shape due to the piezoelectric effect. change, to further drive the piezoelectric carrier plate 423a and adjust the resonant plate 423b to generate reciprocating bending vibration.

As mentioned above, the adjustment resonant plate 423b is located between the piezoelectric plate 423c and the piezoelectric carrier plate 423a, as a buffer between the two, the vibration frequency of the piezoelectric carrier plate 423a can be adjusted. Basically, the thickness of the adjustment resonant plate 423b is greater than the thickness of the piezoelectric carrier plate 423a, and the thickness of the adjustment resonant plate 423b can be varied, thereby adjusting the vibration frequency of the actuating body 423 .

Please also refer to Fig. 9A, Fig. 9B and Fig. 10A, the air injection holes 421, the cavity frame 422, the actuating body 423, the insulating frame 424 and the conductive frame 425 are stacked in sequence correspondingly and positioned on the air guide assembly In the bearing area 415, the piezoelectric actuating element 42 is urged to be placed and positioned in the air guide assembly bearing area 415, and the bottom is fixed on the positioning protrusion 415b to support and position, so the piezoelectric actuating element 42 is positioned on the suspension plate 421a and A gap 421c is defined between the inner edges of the air guiding component bearing area 415 for the gas to circulate.

Please refer to FIG. 10A , an air flow chamber 427 is formed between the above-mentioned air injection hole sheet 421 and the bottom surface of the air guiding component bearing area 415 . The air flow chamber 427 communicates with the resonance chamber 426 between the actuating body 423, the cavity frame 422 and the suspension sheet 421a through the hollow hole 421b of the jet hole sheet 421, and controls the vibration frequency of the gas in the resonance chamber 426 to make it The vibration frequency of the suspension plate 421a is close to the same, so that the resonant chamber 426 and the suspension plate 421a can produce a Helmholtz resonance effect (Helmholtz resonance), so that the gas transmission efficiency can be improved.

Please refer to FIG. 10B, when the piezoelectric plate 423c moves away from the bottom surface of the air guide component bearing area 415, the piezoelectric plate 423c drives the suspension piece 421a of the air injection hole plate 421 to move away from the bottom surface direction of the air guide component bearing area 415 Moving, the volume of the airflow chamber 427 expands rapidly, and the internal pressure drops to form a negative pressure, attracting the gas outside the piezoelectric actuator 42 to flow in through the gap 421c, and enter the resonance chamber 426 through the hollow hole 421b, so that the resonance chamber The air pressure in 426 increases to generate a pressure gradient; as shown in the 10C figure again, when the piezoelectric plate 423c drives the jet hole sheet 421 When the suspension piece 421a moves towards the bottom surface of the air guide component bearing area 415, the gas in the resonance chamber 426 flows out quickly through the hollow hole 421b, squeezing the gas in the airflow chamber 427, and making the converged gas approach the Bernoulli The ideal gas state of the law is rapidly and massively ejected into the air hole 415 a of the bearing area 415 of the gas guide component. Therefore, by repeating the operations shown in FIG. 10B and FIG. 10C, the piezoelectric plate 423c can be vibrated reciprocally. According to the principle of inertia, when the air pressure inside the resonant chamber 426 is lower than the equilibrium air pressure after exhaust, the gas will be guided into the resonant chamber 426 again, thus controlling the vibration frequency of the gas in the resonant chamber 426 and the vibration frequency trend of the piezoelectric plate 423c. Close to the same, in order to produce the Helmholtz resonance effect, so as to realize the high-speed and large-scale transmission of gas.

As shown in FIG. 11A , the gas enters through the air intake frame opening 461 a of the outer cover 46 , enters the air intake groove 414 of the base 41 through the air intake opening 414 a, and flows to the position of the particle sensor 45 . As shown in FIG. 11B, the continuous driving of the piezoelectric actuator 42 will absorb the gas in the intake path, so that the external gas can be quickly introduced and circulated stably, and pass above the particle sensor 45. At this time, the laser component 44 emits a beam of light to pass through. The light-transmitting window 414b enters the air intake groove 414, and the air intake groove 414 is irradiated by the gas above the particle sensor 45. When the light beam touches the suspended particles in the gas, it will scatter and generate projected light spots, and the particle sensor 45 receives the scattered light. The generated projected light points are calculated to obtain the relevant information on the particle size and concentration of the suspended particles contained in the gas, and the gas above the particle sensor 45 is also continuously driven and transported by the piezoelectric actuator 42 and introduced into the air guide component bearing area The air hole 415a of 415 enters the first section 416b of the air outlet groove 416 . Finally, as shown in Figure 11C, after the gas enters the first section 416b of the outlet groove 416, the gas in the first section 416b will be pushed because the piezoelectric actuator 42 will continuously transport the gas into the first section 416b. to the second section 416c, and finally discharged through the air outlet port 416a and the air outlet frame opening 461b.

Referring again to FIG. 12, the base 41 further includes an optical trapping area 417, which is formed by hollowing out from the first surface 411 to the second surface 412, and corresponds to the laser setting area 413, and the optical trapping area 417 passes through the light-transmitting window 414b so that the light beam emitted by the laser component 44 can be projected thereinto. The light trap area 417 is provided with a light trap structure 417a of an inclined cone, and the light trap structure 417a corresponds to the light beam emitted by the laser component 44. In addition, the light trap structure 417a makes the projected beam emitted by the laser component 44 reflected into the light trap area 417 in the inclined cone structure, preventing the light beam from being reflected to the position of the particle sensor 45, and the light beam received by the light trap structure 417a There is an optical trap distance d between the position of the projected light beam and the light-transmitting window 414b, so as to prevent the projected light beam from being projected on the light trap structure 417a and reflected directly back to the position of the particle sensor 45 due to too much stray light, causing distortion of detection accuracy.

Please continue to refer to Figure 5C and Figure 12. The structure of the gas detection module 4 in this case can not only detect particles in the gas, but also detect the characteristics of the introduced gas, for example, the gas is formaldehyde, Ammonia, carbon monoxide, carbon dioxide, oxygen, ozone, etc. Therefore, the gas detection module 4 of this case further includes a first volatile organic compound sensor 47a, and the first volatile organic compound sensor 47a is positioned and electrically connected to the drive circuit board 43, and is accommodated in the gas outlet groove 416, for controlling the gas outlet. The gas derived from the path is detected to detect the concentration or characteristics of volatile organic compounds contained in the gas from the gas path. Alternatively, the gas detection module 4 of this case further includes a second volatile organic compound sensor 47b, the second volatile organic compound sensor 47b is positioned and electrically connected to the driving circuit board 43, and the second volatile organic compound sensor 47b is accommodated In the light trap area 417 , the concentration or characteristics of the volatile organic compounds contained in the gas introduced into the light trap area 417 through the air intake path of the air intake groove 414 and through the light transmission window 414 b.

To sum up, the gas detection and purification device provided in this case uses the gas detection module to monitor the ambient air quality of the user in the car or indoor space at any time, and provides A solution to purify the air quality in the car or indoor space. The combination of the gas detection module and the purification module can prevent users from breathing harmful gases in the car or indoor space, and can get information in real time to warn and inform Users in the environment of the car or indoor space can take preventive measures immediately, which is very industrially applicable.

This case can be modified in various ways by a person who is familiar with this technology, but it does not deviate from the intended protection of the scope of the attached patent application.

1: shell

12: Air outlet

D: diameter

Claims (31)

A gas detection and purification device, comprising: a housing with at least one gas inlet and at least one gas outlet, and a gas flow channel is provided between the gas inlet and the gas outlet; a purification module is arranged on The gas channel is used to filter the gas introduced by the gas channel; a guide fan is arranged in the gas channel and on one side of the purification module to guide the gas from the air inlet through the The purification module performs filtration and purification, and is finally exported from the gas outlet; and a gas detection module is arranged in the gas flow channel, including a control circuit board, a gas detection main body, a microprocessor, a communicator, A power supply unit and a battery are used to detect the gas introduced outside the housing to obtain a gas detection data; wherein the gas detection main body, the microprocessor, the communicator and the power supply unit are packaged in the The control circuit board is electrically connected in one piece, the power supply unit is electrically connected with the battery, and provides the starting operation power of the gas detection body, and the gas detection body detects the gas introduced from the outside of the casing to obtain the gas Gas detection data, the communicator receives the gas detection data from the microprocessor, and transmits the gas detection data to an external device, and the external device obtains information of the gas detection data and an alarm ; Wherein, the gas detection module performs calculation processing on the detected gas detection data to control the operation of starting or closing the air guide fan, and the air guide fan implements the start operation to guide the gas Enter through the air inlet and pass through the purification module for filtration and purification, and finally lead out through the air outlet, and directly correspond to the user to provide the purified gas. The gas detection and purification device according to claim 1, wherein the purification module is a filter unit. The gas detection and purification device as described in claim 2, wherein the filter unit is an electrostatic filter net, an activated carbon filter and a high-efficiency filter. The gas detection and purification device as described in claim 2, wherein the filter unit is coated with a layer of chlorine dioxide cleaning factor to inhibit viruses and bacteria in the gas. The gas detection and purification device as described in claim 2, wherein the filter unit is coated with a layer of herbal protection coating extracted from Ginkgo biloba and Japanese japonica to form a herbal protection and anti-allergic filter, which is effective for anti-allergic and Destroys influenza virus surface proteins passing through the strainer. The gas detection and purification device as described in claim 2, wherein the filter unit is coated with silver ions to suppress viruses and bacteria in the gas. The gas detection and purification device as described in claim 2, wherein the purification module is composed of the filter unit and a photocatalyst unit, the photocatalyst unit includes a photocatalyst and an ultraviolet lamp, and the photocatalyst is irradiated by the ultraviolet lamp. Decompose the introduced gas for filtration and purification. The gas detection and purification device as described in claim 2, wherein the purification module is composed of the filter unit and a photoplasma unit, and the photoplasma unit includes a nano-optical tube through which the gas is irradiated , to promote the decomposition of volatile organic gases contained in the gas to purify the introduced gas. The gas detection and purification device as described in claim 2, wherein the purification module is composed of the filter unit and a negative ion unit, and the negative ion unit includes at least one electrode wire, at least one dust collecting plate and a boosted power supply The device discharges high voltage through the electrode wire, and adsorbs the particles contained in the introduced gas on the dust collecting plate to filter and purify the gas. The gas detection and purification device as described in claim 2, wherein the purification module is composed of the filter unit and a plasma ion unit, and the plasma ion unit includes an electric field first protection net and an adsorption filter net , a high-voltage discharge electrode, a second electric field protection net, and a booster power supply, the booster power supply provides high-voltage electricity to the high-voltage discharge electrode to generate a high-voltage plasma column and decompose the introduced plasma ions Viruses or bacteria in the gas. The gas detection and purification device as described in claim 1, wherein the guide fan is a fan. The gas detection and purification device as described in claim 1, wherein the guide fan is an actuating pump. The gas detection and purification device as described in claim 12, wherein the actuating pump comprises: an inlet plate having at least one inlet hole, at least one confluence drain and a confluence chamber, wherein the inlet hole is used for To introduce the gas, the inlet hole correspondingly passes through the confluence row groove, and the confluence row groove converges to the confluence chamber, so that the gas introduced by the inlet hole flows into the confluence chamber; a resonant plate, Connected to the flow plate, it has a hollow hole, a movable part and a fixed part, the hollow hole is located at the center of the resonant plate, and corresponds to the confluence chamber of the flow plate, and the movable part is arranged on The area around the hollow hole and opposite to the confluence chamber, and the fixing part is arranged on the outer peripheral portion of the resonant plate and fixed on the flow plate; and a piezoelectric actuator is connected to the resonant plate And set corresponding to the resonant plate; wherein, there is a chamber space between the resonant plate and the piezoelectric actuator, so that when the piezoelectric actuator is driven, the gas flows from the inlet plate The inlet hole is introduced, collected into the confluence chamber through the confluence row groove, and then flows through the hollow hole of the resonant plate, and the gas is transmitted by resonance between the piezoelectric actuator and the movable part of the resonant plate . The gas detection and purification device as claimed in claim 13, wherein the piezoelectric actuator comprises: a suspension plate having a square shape, capable of bending and vibrating; an outer frame surrounding the suspension plate; At least one bracket is connected between the suspension board and the outer frame to provide elastic support for the suspension board; and a piezoelectric element has a side length which is less than or equal to a side length of a suspension board of the suspension board, And the piezoelectric element is attached to one surface of the suspension board for applying voltage to drive the suspension board to bend and vibrate. The gas detection and purification device as described in claim 13, wherein the actuating pump further comprises A first insulating sheet, a conductive sheet and a second insulating sheet, wherein the flow plate, the resonant sheet, the piezoelectric actuator, the first insulating sheet, the conductive sheet and the second insulating sheet are sequentially Stacked composition set. The gas detection and purification device as claimed in claim 13, wherein the piezoelectric actuator comprises: a suspension plate having a square shape, capable of bending and vibrating; an outer frame surrounding the suspension plate; At least one bracket is connected and formed between the suspension board and the outer frame to provide elastic support for the suspension board, and make a surface of the suspension board and a surface of the outer frame into a non-coplanar structure, and make the suspension board One surface of the suspension plate and the resonant plate maintain the chamber space; and a piezoelectric element has a side length, the side length is less than or equal to the side length of one of the suspension plates, and the piezoelectric element is attached to the One surface of the suspension board is used for applying voltage to drive the suspension board to bend and vibrate. The gas detection and purification device as described in Claim 1, wherein the external device is one of a mobile device, a cloud processing device, and a computer system. The gas detection and purification device according to claim 1, wherein the gas detection body comprises: a base with: a first surface; a second surface, opposite to the first surface; a laser setting area , formed by hollowing out from the first surface toward the second surface; an air intake groove, formed by recessing from the second surface, and adjacent to the laser installation area, the air intake groove is provided with an air intake port, And the two side walls pass through a light-transmitting window and communicate with the laser setting area; a gas guide component bearing area is formed by recessing from the second surface, and communicates with the air intake groove, and passes through a vent hole on the bottom surface, and the guide The four corners of the air component bearing area respectively have a positioning protrusion; and An air outlet groove is recessed from the first surface corresponding to the bottom surface of the air guiding component bearing area, and is dug from the first surface toward the second surface in the area of the first surface not corresponding to the air guiding component bearing area Formed in a void, communicated with the vent hole, and is provided with an air outlet port; a piezoelectric actuating element, accommodated in the bearing area of the air guide component; a driving circuit board, the cover is attached to the second part of the base On the surface: a laser component, positioned on the drive circuit board and electrically connected to it, and correspondingly accommodated in the laser installation area, and a beam path emitted passes through the light-transmitting window and is connected to the The intake groove forms an orthogonal direction; a particle sensor is positioned on the drive circuit board and electrically connected to it, and is correspondingly accommodated in the orthogonal direction of the intake groove and the beam path projected by the laser component The direction position is used to detect the particles passing through the air intake groove and irradiated by the beam projected by the laser component; and an outer cover, which is covered on the first surface of the base and has a side plate , the position of the side plate corresponding to the air inlet port and the air outlet port of the base is respectively provided with an air inlet frame port and an air outlet frame port, and the air inlet frame port corresponds to the air inlet port of the base , the air outlet frame opening corresponds to the air outlet port of the base; wherein, the first surface of the base is covered with the outer cover, and the second surface is covered with the drive circuit board so that the air intake The groove defines an air inlet path, and the air outlet groove defines an air outlet path, so that the piezoelectric actuating element accelerates and guides the gas outside the air inlet port of the base to enter through the air inlet frame opening The intake path defined by the intake groove passes through the particle sensor to detect the concentration of particles in the gas, and the gas is guided through the piezoelectric actuator and exhausted by the vent hole Enter the air outlet path defined by the air outlet groove, and finally discharge from the air outlet port of the base to the air outlet frame. The gas detection and purification device as claimed in claim 18, wherein the base further includes an optical trap area formed by hollowing out from the first surface toward the second surface and corresponding to the laser setting area, The optical trapping area is provided with an optical trapping structure with an inclined cone, which is arranged corresponding to the light beam path. The gas detection and purification device as claimed in claim 19, wherein the light trapping structure receives the projected light beam and maintains an optical trapping distance from the light-transmitting window. The gas detection and purification device as claimed in claim 18, wherein the particle sensor is a PM2.5 sensor. The gas detection and purification device as described in claim 18, wherein the piezoelectric actuating element includes: a gas injection hole sheet, including a suspension sheet and a hollow hole, the suspension sheet can bend and vibrate, and the hollow hole forms At the center of the suspended plate; a cavity frame, loaded and stacked on the suspended plate; an actuating body, loaded and stacked on the cavity frame, to receive voltage to generate reciprocating bending vibration; an insulating frame, and a conductive frame, which is stacked on the insulating frame; wherein, the air injection orifice sheet is fixed on the positioning protrusion in the bearing area of the air guiding component to support and position, so that the A gap is defined between the air injection hole sheet and the inner edge of the air guide component bearing area to circulate the gas, and an air flow chamber is formed between the air injection hole sheet and the bottom of the air guide assembly bearing area, and the actuating body 1. A resonant chamber is formed between the cavity frame and the suspension plate. By driving the actuating body to drive the air jet hole plate to resonate, the suspension plate of the air jet hole plate produces a reciprocating vibration displacement to attract The gas enters the air flow chamber through the gap and is discharged to realize the transmission flow of the gas. The gas detection and purification device as described in claim 22, wherein the actuating body includes: a piezoelectric carrier plate, loaded and stacked on the cavity frame; an adjustment resonant plate, loaded and stacked on the piezoelectric a carrier plate; and a piezoelectric plate, which is stacked on the adjustment resonant plate to receive voltage to drive the piezoelectric plate The carrier plate and the adjusting resonant plate generate reciprocating bending vibration. The gas detection and purification device as described in claim 18, wherein the gas detection module further includes a first volatile organic compound sensor positioned on the drive circuit board and electrically connected, accommodated in the gas outlet channel In the tank, detect the gas derived from the gas outlet path. The gas detection and purification device as described in claim 19, wherein the gas detection module further includes a second volatile organic compound sensor positioned on the drive circuit board and electrically connected, accommodated in the optical trap The region is used to detect the gas introduced into the optical trap region through the inlet path of the inlet groove and through the light-transmitting window. The gas detection and purification device as described in Claim 1, wherein the bottom of the casing is in the shape of a cylinder, the diameter of the overall structure of the casing is between 40mm and 120mm, and the height is between 100mm and 300mm. The gas detection and purification device as described in claim 1, wherein the bottom of the casing is in the shape of a cylinder, the diameter of the overall structure of the casing is preferably 80mm, and the height is preferably 200mm. The gas detection and purification device as described in claim 1, wherein the bottom of the housing is in the form of a long cylinder, the overall structure of the housing has a length between 40mm and 120mm, and a width between 40mm and 120mm , between 100mm and 300mm in height. The gas detection and purification device as described in Claim 1, wherein the bottom of the housing is in the form of a long cylinder, the overall structure of the housing is preferably 80mm in length, 80mm in width, and 200mm in height for the best. The gas detection and purification device as described in claim 1, wherein the casing is portable and is arranged in a car interior space, the car interior space is a cup holder, a central storage seat, and a front shield One of a windshield trim platform and a rear windshield trim platform. The gas detection and purification device as described in claim 1, wherein the casing is embedded in a car interior space Among them, the space inside the car is a sound box, an air-conditioning outlet, a door trim panel, a car interior panel, a seat, a car interior ceiling, a steering wheel, a storage box, a rear mirror, and a sunshade One of the board and a central storage seat.

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