CN113002275B - Gas detection and purification device - Google Patents

Abstract

A gas detection and purification device is provided in a vehicle interior space and includes: a housing having an air inlet and an air outlet, and a gas flow channel is provided between the air inlet and the air outlet; a purification module, is disposed in the gas flow channel to filter a gas introduced into the gas flow channel; an air guide fan is disposed in the gas flow channel and is disposed on one side of the purification module to guide the gas to be introduced from the air inlet through the The purification module performs filtering and purification, and is finally exported from the gas outlet; and the gas detection module is disposed in the gas flow channel to detect the gas introduced outside the housing to obtain a gas detection data.

Description

Gas detection and purification device

Technical field

This case is about a gas detection and purification device, especially a gas detection and purification device that is used in cars and indoor spaces.

Background technique

Modern people are paying more and more attention to the quality requirements of the gases around them, 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 affect human health when exposed in the environment, and even endanger life in severe cases. Therefore, the quality of ambient gases has attracted the attention of various countries. How to monitor and avoid distance is urgently needed and is a current issue.

How to confirm the quality of gas? It is feasible to use a gas sensor to monitor the surrounding gas. If it can provide monitoring information in real time and warn people in the environment, they can immediately prevent or escape to avoid being exposed to gas in the environment. Exposure causes human health effects and injuries. Using gas sensors to monitor the surrounding environment is a very good application. Gas detection and purification devices can provide modern people with purified air quality while driving or indoors to avoid breathing harmful gases. The solution can monitor air quality in real time anytime and anywhere, and can provide the benefits of purifying air quality. This is the main topic of research and development in this case.

Contents of the invention

The main purpose of this case is to provide a gas detection and purification device that uses the gas detection module to monitor the user's ambient air quality in the car at any time, and uses the purification module to provide a solution for purifying air quality. In this way, the gas detection module and the purification module are matched The application can prevent users from breathing harmful gases in the car or indoors, and can obtain real-time information to warn users in the car or indoor environment, so that they can take immediate preventive measures.

A broad implementation aspect of this case is a gas detection and purification device, including: a housing with at least one air inlet and at least one air outlet, and a gas flow channel is provided between the air inlet and the air outlet. ; A purification module is disposed in the gas flow channel to filter a gas introduced into the gas flow channel; an air guide fan is disposed in the gas flow channel and is disposed on one side of the purification module to guide the gas from the gas flow channel; The air inlet is introduced through the purification module for filtering and purification, and is finally exported from the air outlet; a gas detection module is provided in the gas flow channel and includes a control circuit board, a gas detection body, a microprocessor, and a communicator , a power supply unit and a battery for detecting the gas introduced outside the housing to obtain a gas detection data; wherein, the gas detection data detected and obtained by the gas detection module are processed for operation to control the implementation of the air guide fan The operation of starting or shutting down, and the air guide fan performs the starting operation to guide the gas from the air inlet to the purification module for filtering and purification, and finally is exported from the air outlet, and directly corresponds to the user to provide the purified gas.

Description of the drawings

Figure 1A is a schematic three-dimensional view of a preferred embodiment of the gas detection and purification device in this case.

Figure 1B is a schematic three-dimensional view of another preferred embodiment of the gas detection and purification device in this case.

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

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

Figure 2C is a schematic cross-sectional view of the purification module composed of the filter unit and the optical plasma unit in Figure 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.

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

Figure 3A is an exploded schematic diagram of the relevant components of the gas detection and purification device in the form of an actuator pump, viewed from a front angle.

Figure 3B is an exploded schematic diagram of the relevant components of the gas detection and purification device in the form of an actuator pump, viewed from a back angle.

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

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

4C to 4E are schematic diagrams of the actuation pump of the gas detection and purification device of FIG. 4A.

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

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

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

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

Figure 6B is a schematic three-dimensional view of the base of the gas detection body in this case from another angle.

Figure 7 is a three-dimensional schematic diagram of the base of the gas detection body housing the laser component and particle sensor in this case.

Figure 8A is an exploded three-dimensional schematic view of the piezoelectric actuator combined with the base of the gas detection body in this case.

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

Figure 9A is an exploded three-dimensional schematic view of the piezoelectric actuator of the gas detection body in this case.

Figure 9B is an exploded three-dimensional schematic diagram of the piezoelectric actuator of the gas detection body in this case from another angle.

Figure 10A is a schematic cross-sectional view of the piezoelectric actuator of the gas detection body in this case combined with the gas guide component bearing area.

10B and 10C are schematic diagrams of the piezoelectric actuator in FIG. 10A.

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

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

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

Explanation of reference signs

1: Shell

11: Air inlet

12: Air outlet

13: Gas flow channel

2: Purification module

2a: Filter unit

2b: Photocatalyst unit

21b: Photocatalyst

22b: UV lamp

2c: Photoplasma unit

21c: Nano light tube

2d: Negative ion unit

21d: Electrode wire

22d: Dust collection plate

23d: Boost power supply

2e: Plasma ion unit

21e: The first protective net of electric field

22e: Adsorption filter

23e: High voltage discharge electrode

24e: Second protective net of electric field

25e: Boost power supply

3: Air guide fan

30: Actuating pump

301: Inlet plate

301a: Inlet hole

301b: Bus trough

301c: Confluence chamber

302: Resonance piece

302a: Hollow hole

302b: Movable part

302c: Fixed part

303: Piezoelectric actuator

303a: Hoverboard

303b: outer frame

303c: Bracket

303d: Piezoelectric element

303e: Gap

303f: convex part

304: First insulation sheet

305: Conductive sheet

306: Second insulation sheet

307: Chamber space

4: Gas detection module

4a: Control circuit board

4b: Gas detection subject

41: base

411: First surface

412: Second surface

413: Laser setting area

414: Air intake groove

414a: Air intake vent

414b: light-transmitting window

415: Air guide component bearing area

415a: Vent

415b: Positioning bump

416: Air outlet groove

416a: Air outlet

416b: first interval

416c: Second interval

417: Light Trap Area

417a: Light trap structure

42: Piezoelectric actuation element

421: Fumarole sheet

421a: Suspended tablets

421b: Hollow hole

421c: Gap

422: Cavity Frame

423: Actuator

423a: Piezoelectric carrier plate

423b: Adjust the resonance plate

423c: Piezoelectric plate

423d: Piezoelectric pin

424: Insulated frame

425: Conductive Frame

425a: Conductive pin

425b: Conductive electrode

426: Resonance Chamber

427: Air flow chamber

43: Driver circuit board

44: Laser components

45: Particle sensor

46: outer cover

461: Side panel

461a: Air intake frame opening

461b: Air outlet frame opening

47a: First Volatile Organic Compound Sensor

47b: Second volatile organic compound 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

Detailed ways

Some typical embodiments embodying the features and advantages of this case will be described in detail in the following description. It should be understood that this case can have various changes in different aspects without departing from the scope of this case, and the descriptions and illustrations are essentially for illustrative purposes rather than limiting this case.

Please refer to Figures 1A, 1B and 2A. This case provides a gas detection and purification device, which includes a housing 1, a purification module 2, an air guide 3 and a gas detection module 4. The design of the housing 1 takes into account the overall structural size that is portable and easy to hold. Therefore, the bottom of the housing 1 adopts the shape of a cylinder (as shown in Figure 1A) or a square cylinder (as shown in Figure 1B). Design, especially the dimensions of the overall structure of the shell 1 are 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 as the best, and the height H is between 100mm and 300mm. time, the best height H is 200mm; when the bottom of the housing 1 adopts a long cylindrical shape, its length L is between 40mm and 120mm, the best length L is 80mm, and the width W is between 40mm and 120mm. , the width W is 80mm, the height H is between 100mm and 300mm, and the height H is 200mm. As can be seen from the above, the housing 1 is portable and is placed in a car interior space (not shown), and the car interior space can be a cup holder, a central storage seat, a front windshield trim platform and a One of the rear windshield trim platforms; the housing 1 is embedded in a car interior space (not shown), which contains a speaker, an air-conditioning outlet, a door trim panel, and a car interior One of a panel, a seat, a car ceiling, a steering wheel, a storage box, a rear mirror, a sun visor and a central storage seat; alternatively, the housing 1 is portable and is placed in the indoor space. , perform gas detection and purification operations on users.

In addition, the above-mentioned housing 1 has at least one air inlet 11 and at least one air outlet 12. In this example, it is an air inlet 11 and an air outlet 12, but it is not limited to this, and the air inlet 11 A gas flow channel 13 is provided between the gas outlet 12; the above-mentioned purification module 2 is arranged in the gas flow channel 13 to filter the gas introduced by the gas flow channel 13; the above-mentioned air guide fan 3 is arranged in the gas flow channel 13, And is arranged on one side of the purification module 2. The pilot gas is introduced from the air inlet 11 through the purification module 2 for filtering and purification, and is finally exported from the air outlet 12; and the above-mentioned gas detection module 4 is arranged in the gas flow channel 13, and the detection shell The gas introduced outside the body 1 is used to obtain gas detection data. In this way, the gas detection module 4 performs calculation processing on the detected gas detection data to control the air guide fan 3 to perform a starting or closing operation, and the air guide fan 3 performs a starting operation to guide the gas to enter through the purification port from the air inlet 11 Module 2 performs filtering and purification, and is finally exported from the air outlet 12, and directly corresponds to the user to provide respiratory purification gas. Therefore, the gas detection and purification device in this case can be installed in the interior space of the vehicle, the interior space of the vehicle or the general indoor space, and can be used The gas detection module 4 is used to detect the ambient air quality of the user in the car or indoor space at any time, and the purification module 2 is used to provide a solution for purifying the air quality in the car or indoor space to prevent the user from breathing harmful gases in the car or indoor space. gas.

The above-mentioned purification module 2 is located in the gas flow channel 13 and can be implemented in various ways. For example, as shown in Figure 2A, the purification module 2 is a filter unit 2a. When the gas is introduced into the gas flow channel 13 through the control of the air guide 3, the filter unit 2a adsorbs the chemical smoke, bacteria, dust particles and pollen contained in the gas to achieve the effect of filtering and purifying the introduced gas. Among them, the filter unit 2a The unit 2a may be one of an electrostatic filter, an activated carbon filter or a high-efficiency filter (High-Efficiency Particulate Air, HEPA). Furthermore, in some embodiments, a layer of chlorine dioxide cleaning factor can be coated on the filter unit 2a to inhibit viruses and bacteria in the gas, so as to inhibit influenza A virus, influenza B virus, enterovirus and norovirus. The rate exceeds 99%, helping to reduce cross-infection of viruses; in other embodiments, the filter unit 2a can be coated with a layer of herbal protective coating extracted from Ginkgo biloba and Japanese salt bark to form an herbal protective coating. The sensitive filter can effectively resist allergies and can also destroy the surface proteins of influenza viruses (such as H1N1 influenza viruses) passing through the filter; in other embodiments, the filter unit 2a can be coated with silver ions to inhibit viruses in the gas. ,bacteria.

As shown in Figure 2B, the purification module 2 can be 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 to maintain a distance so that the gas It is introduced into the gas flow channel 13 under the control of the air guide 3, and the photocatalyst 21b is irradiated by the ultraviolet lamp 22b to convert light energy into chemical energy, thereby decomposing harmful gases and sterilizing the gas, so as to filter the introduced gas. Purifying effect.

As shown in FIG. 2C , the purification module 2 can be a combination of a filter unit 2 a and a photo-plasma unit 2 c. The photo-plasma unit 2 c includes a nano-light tube 21 c and is disposed in the gas flow channel 13 . The gas is controlled by the air guide 3 and introduced into the gas flow channel 13, and is irradiated by the nano-light tube 21c to decompose the oxygen molecules and water molecules in the gas into highly oxidizing light plasma, and form a light plasma capable of destroying organic molecules. Ion gas flow decomposes gas molecules such as volatile formaldehyde, toluene, and volatile organic compounds (VOC) in the gas into water and carbon dioxide, thereby filtering and purifying the introduced gas.

As shown in Figure 2D, the purification module 2 can be equipped with a negative ion unit 2d for the filter unit 2a. The negative ion unit 2d includes at least one electrode wire 21d, at least a dust collecting plate 22d and a boost power supply 23d. Each electrode wire 21d, Each dust collecting plate 22d is placed in the gas flow channel 13, and the boost power supply 23d provides high-voltage discharge for each electrode line 21d. Each dust collecting plate 22d is negatively charged, so that the gas is introduced through the control of the air guide fan 3. In the gas flow channel 13, through the high-voltage discharge of each electrode wire 21d, the positively charged particles contained in the gas can be attached to each negatively charged dust collection plate 22d, so as to filter the introduced gas and perform filtration and purification. Effect.

As shown in Figure 2E, the purification module 2 can be equipped with a plasma ion unit 2e for the filter unit 2a. The plasma ion unit 2e includes an electric field first protective net 21e, an adsorption filter 22e, a high-voltage discharge electrode 23e, and an electric field. The second protective net 24e and a boost power supply 25e, in which the first electric field protective net 21e, the adsorption filter 22e, the high-voltage discharge electrode 23e and the second electric field protective net 24e are set in the gas flow channel 13, and the adsorption filter 22e, The high-voltage discharge electrode 23e is sandwiched between the first electric field protective net 21e and the second electric field protective net 24e, and the boost power supply 25e provides high-voltage electricity to the high-voltage discharge electrode 23e to generate a high-voltage electricity with plasma ions. The slurry column causes the gas to be controlled by the air guide 3 and introduced into the gas flow channel 13. The oxygen molecules and water molecules contained in the gas are ionized by plasma ions to generate cations (H ⁺ ) and anions (O ₂ ^- ), and the ions After substances with water molecules attached around them adhere to the surfaces of viruses and bacteria, they will be converted into strongly oxidizing reactive oxygen species (hydroxyl, OH groups) under the action of chemical reactions, thereby taking away the hydrogen from the surface proteins of viruses and bacteria. Decompose it (oxidative decomposition) to achieve the effect of filtering and purifying the introduced gas.

The above-mentioned air guide fan 3 may be a fan, such as a vortex fan, a centrifugal fan, etc., or as shown in FIGS. 3A, 3B, 4A and 4B, the air guide fan 3 may be an actuator pump 30. The above-mentioned actuator pump 30 is composed of an inlet plate 301, a resonance piece 302, a piezoelectric actuator 303, a first insulating piece 304, a conductive piece 305 and a second insulating piece 306 stacked in sequence. The inlet plate 301 has at least one inlet hole 301a, at least one bus slot 301b and a bus chamber 301c. The inlet hole 301a is for introducing gas, the inflow hole 301a corresponds to the bus slot 301b, and the bus slot 301b The gas flows into the confluence chamber 301c, so that the gas introduced into the inlet hole 301a can be converged into the confluence chamber 301c. In this embodiment, the number of the inlet holes 301a and the bus slots 301b is the same, and the number of the inlet holes 301a and the bus slots 301b is 4 respectively. It is not limited to this, and the 4 inlet holes 301a pass through each other respectively. There are four bus slots 301b, and the four bus slots 301b are connected to the bus chamber 301c.

Please refer to FIG. 3A, FIG. 3B and FIG. 4A. The above-mentioned resonance piece 302 is assembled on the inlet plate 301 through a fitting method, and the resonance piece 302 has a hollow hole 302a, a movable part 302b and a fixed part. part 302c, the hollow hole 302a is located at the center of the resonance piece 302 and corresponds to the converging chamber 301c of the inlet plate 301, and the movable part 302b is disposed around the hollow hole 302a and in an area opposite to the converging chamber 301c, and The fixing portion 302c is provided on the outer peripheral edge portion of the resonance piece 302 and is adhered 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, at least one gap 303e and a Projection 303f. Among them, the suspension board 303a is in a square shape. The reason why the suspension board 303a is square is because 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 it operates at the resonance frequency. The power consumption of capacitive load will increase with the increase of frequency, and because the resonant frequency of the square suspension board 303a is significantly lower than that of the circular suspension board, its relative power consumption is also significantly lower, which is what is used in this case. The square designed suspension board 303a has the advantage of power saving; 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 Supporting force; and a piezoelectric element 303d has a side length that is less than or equal to the side length of a suspension plate 303a of the suspension plate 303a, and the piezoelectric element 303d is attached to a surface of the suspension plate 303a to apply voltage. To drive the suspension plate 303a to bend and vibrate; at least one gap 303e is formed between the suspension plate 303a, the outer frame 303b and the bracket 303c for gas to pass; the convex portion 303f is provided on the surface of the suspension plate 303a where the piezoelectric element 303d is attached The convex portion 303f in this embodiment can be formed by integrally forming the suspension plate 303a using an etching process and protruding from the other surface opposite to the surface where the piezoelectric element 303d is attached. A convex structure.

Please continue to refer to FIG. 3A, FIG. 3B and FIG. 4A. The above-mentioned inflow plate 301, resonance piece 302, piezoelectric actuator 303, first insulating piece 304, conductive piece 305 and second insulating piece 306 are stacked in sequence. Combination, in which a chamber space 307 needs to be formed between the floating plate 303a of the piezoelectric actuator 303 and the resonance plate 302, and the chamber space 307 can be used between the resonance plate 302 and the outer frame 303b of the piezoelectric actuator 303 The gap is filled with a material, such as conductive glue, but is not limited to this, so that a certain depth can be maintained between the resonance piece 302 and a surface of the suspension plate 303a to form a chamber space 307, thereby guiding the gas more quickly The ground flow, and because the suspension plate 303a and the resonance piece 302 are kept at an appropriate distance, the contact interference with each other is reduced, so that the noise generation can be reduced. Of course, in another embodiment, the outer frame 303b of the piezoelectric actuator 303 can also be used. The height is increased to reduce the thickness of the conductive glue filled in the gap between the resonance piece 302 and the outer frame 303b of the piezoelectric actuator 303. In this way, the overall structure of the actuator pump will not be assembled due to the filling material of the conductive glue that will be affected by the hot pressing temperature and The cooling temperature indirectly affects the actual spacing of the cavity space 307 after molding due to thermal expansion and contraction of the filling material of the conductive adhesive, but is not limited to this. In addition, the chamber space 307 will affect the transmission effect of the actuator pump 30, so maintaining a fixed chamber space 307 is very important for the actuator pump 30 to provide stable transmission efficiency.

Therefore, as shown in FIG. 4B , in other embodiments of the piezoelectric actuator 303 , the suspension plate 303 a can be stamped to extend outward a distance, and the outward extension distance can be formed on the suspension plate 303 a by at least one bracket 303 c It is adjusted with the outer frame 303b 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 material is applied to the assembly surface of the outer frame 303b. For example, conductive glue is used to hot-press the piezoelectric actuator 303 to the fixed part 302c of the resonance piece 302, so that the piezoelectric actuator 303 can be assembled and combined with the resonance piece 302. In this way, the above-mentioned The suspension plate 303a of the piezoelectric actuator 303 is structurally improved by stamping to form a chamber space 307. The required chamber space 307 can be completed by adjusting the stamping forming distance of the suspension plate 303a of the piezoelectric actuator 303. This effectively simplifies the structural design of the adjustment chamber space 307, and also achieves the advantages of simplifying the manufacturing process and shortening the manufacturing time. In addition, the first insulating sheet 304 , the conductive sheet 305 and the second insulating sheet 306 are all frame-shaped thin sheets, which are sequentially stacked on the piezoelectric actuator 303 to form the overall structure of the actuator pump 30 .

In order to understand the output operation mode of the above-mentioned actuator pump 30 for providing gas transmission, please continue to refer to Figure 4C to Figure 4E. Please refer to Figure 4C first. After the piezoelectric element 303d of the piezoelectric actuator 303 is applied with a driving voltage, The deformation causes the suspension plate 303a to move downward. At this time, the volume of the chamber space 307 increases, forming a negative pressure in the chamber space 307. The gas in the confluence chamber 301c is drawn into the chamber space 307, and at the same time, the resonance plate 302 is synchronously displaced downward due to 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 in a negative pressure state. , and then absorb the gas into the bus chamber 301c through the inlet hole 301a and the bus groove 301b; please refer to Figure 4D again, the piezoelectric element 303d drives the suspension plate 303a to move upward, compressing the chamber space 307, and similarly, the resonance piece 302 is displaced upward by the suspended plate 303a due to resonance, forcing the gas in the synchronous pushing chamber space 307 to be transmitted downward through the gap 303e to achieve the effect of transmitting gas; finally, please refer to Figure 4E, when the suspended plate 303a returns to its original state When the resonant piece 302 is in the position, the resonant piece 302 is still displaced downward due to inertia. At this time, the resonant piece 302 will cause the gas in the compression chamber space 307 to move toward the gap 303e, and increase the volume in the confluence chamber 301c, so that the gas can continue to flow The gas is collected into the confluence chamber 301c through the inlet hole 301a and the bus groove 301b, and by continuously repeating the above-mentioned gas transmission operation steps of the actuator pump 30 shown in FIGS. 4C to 4E, the actuator pump 30 can operate The gas continuously enters the flow channel formed by the inlet plate 301 and the resonance plate 302 from the inlet hole 301a to generate a pressure gradient, and is then transmitted downward through the gap 303e, causing the gas to flow at a high speed, thereby achieving the actuation operation of the actuator pump 30 to transmit the gas output.

As shown in Figures 5A to 5C, 6A to 6B, 7, 8A to 8B and 13, the gas detection module 4 includes a control circuit board 4a, a gas detection body 4b, and a microprocessor 4c, a communicator 4d, a power supply unit 4e and a battery 4f. Among them, the gas detection body 4b, the microprocessor 4c, the communicator 4d and the power supply unit 4e are packaged on the control circuit board 4a and are electrically connected together, and the power supply unit 4e provides the starting operation power of the gas detection body 4b, prompting the gas detection body 4b to detect Gas is introduced from the outside of the casing 1 to obtain gas detection data, and the power supply unit 4e obtains power by electrically connecting to the battery 4f; and the microprocessor 4c receives the gas detection data for processing and controls the starting or closing state of the air guide fan 3 To implement the gas purification operation, the communicator 4d receives the gas detection data from the microprocessor 4c and transmits it to an external device 5 through communication, so that the external device 5 obtains a message of the gas detection data and an alarm. The external device 5 is a mobile device, a cloud processing device or a computer system; the external communication transmission of the above-mentioned communicator 4d can be through wired communication transmission, such as USB connection communication transmission, or through wireless communication transmission, such as: Wi-Fi communication transmission, Bluetooth communication transmission, radio frequency identification communication transmission, near field communication transmission, etc.

As shown in Figures 5A to 5C, 6A to 6B, 7, 8A to 8B, 9A to 9B, and 11A to 11C, the gas detection body 4b includes a base 41, a pressure Electric actuating element 42, a driving circuit board 43, a laser component 44, a particle sensor 45 and an outer cover 46. Among them, the base 41 has a first surface 411, a second surface 412, a laser setting area 413, an air inlet groove 414, an air guide component carrying area 415 and an air outlet groove 416. The first surface 411 and The second surfaces 412 are two opposite surfaces. The laser setting area 413 is hollowed out from the first surface 411 toward the second surface 412 . In addition, the outer cover 46 covers the base 41 and has a side plate 461. The side plate 461 has an air inlet frame opening 461a and an air outlet frame opening 461b. The air inlet groove 414 is recessed from the second surface 412 and is adjacent to the laser setting area 413 . The air inlet groove 414 is provided with an air inlet opening 414a, which is connected to the outside of the base 41 and corresponds to the air inlet frame opening 461a of the outer cover 46, and a light-transmitting window 414b runs through both side walls and is connected to 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 define an air inlet path. (As shown in Figure 7 and Figure 11A).

As shown in FIGS. 6A and 6B , the above-mentioned air guide component carrying area 415 is formed by a depression on the second surface 412 and is connected to the air inlet groove 414 and has a ventilation hole 415a penetrating the bottom surface. The above-mentioned air outlet groove 416 is provided with an air outlet 416a, and the air outlet 416a is provided corresponding to the air outlet frame opening 461b of the outer cover 46. The air outlet groove 416 includes a first section 416b formed by a depression of the first surface 411 corresponding to the vertical projection area of the air guide component carrying area 415, and an area extending from the vertical projection area of the non-gas conducting component carrying area 415, and A second section 416c is formed by hollowing out the first surface 411 to the second surface 412, where the first section 416b and the second section 416c are connected to form a step difference, and the first section 416b of the air outlet groove 416 is in contact with the air guide component carrying area. The ventilation holes 415a of 415 are connected to each other, and the second section 416c of the air outlet groove 416 is connected to the air outlet 416a. Therefore, when 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 , the air outlet groove 416 , the outer cover 46 and the driving circuit board 43 are connected. Define an air 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 both disposed on the drive circuit board 43 and located in the base 41 . In order to clearly illustrate the relationship between the laser component 44 , the particle sensor 45 and the base 41 position, so the driving circuit board 43 is intentionally omitted in FIG. 7 . Referring again to FIG. 5C, FIG. 6B, and FIG. 7, the laser assembly 44 is disposed in the laser setting area 413 of the base 41, and the particle sensor 45 is disposed in the air inlet groove 414 of the base 41, and is connected with the laser assembly. 44 aligned. In addition, the laser component 44 corresponds to the light-transmitting window 414b, and the light-transmitting window 414b allows the laser light emitted by the laser component 44 to pass through, so that the laser light can be irradiated into the air inlet groove 414. The path of the beam emitted by the laser component 44 passes through the light-transmitting window 414b and forms an orthogonal direction to the air inlet groove 414. The laser component 44 emits a beam of light and enters the air inlet groove 414 through the light-transmitting window 414b. The suspended particles contained in the gas in the air inlet groove 414 are irradiated. When the light beam contacts the suspended particles, it will scatter and produce a projected light spot, causing The particle sensor 45 is located at its orthogonal position to receive the projected light points generated by scattering and perform calculations to obtain information related to the particle size and concentration of suspended particles contained in the gas. The suspended particles contained in the gas include bacteria and viruses. The particle sensor 45 is a PM2.5 sensor.

As shown in FIGS. 8A and 8B , the above-mentioned piezoelectric actuator element 42 is accommodated in the air guide component bearing area 415 of the base 41 . The air guide component bearing area 415 is in the shape of a square, and its four corners are respectively provided with a positioning position. Bumps 415b, the piezoelectric actuating element 42 is disposed in the air guide component carrying area 415 through four positioning bumps 415b. In addition, as shown in FIGS. 6A, 6B, 11B and 11C, the air guide component carrying area 415 is connected with the air inlet groove 414. When the piezoelectric actuating element 42 is actuated, the air guide component carrying area 415 is sucked out of the air inlet groove 414. The gas enters the piezoelectric actuating element 42 and enters the gas outlet groove 416 through the ventilation hole 415a of the gas guide component carrying area 415.

As shown in FIG. 5B and FIG. 5C , the above-mentioned driving circuit board 43 is sealed and 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 outer cover 46 covers the base 41, the air inlet frame opening 461a corresponds to the air inlet vent 414a of the base 41 (shown in Figure 11A), and the air outlet frame opening 461b corresponds to the base 41 The air outlet 416a (shown in Figure 11C).

Referring to FIGS. 9A and 9B , the above-mentioned piezoelectric actuator element 42 includes a jet hole piece 421 , a cavity frame 422 , an actuator 423 , an insulating frame 424 and a conductive frame 425 . Among them, the jet hole sheet 421 is made of flexible material and has a suspended sheet 421a and a hollow hole 421b. The floating piece 421a is a sheet-like structure that can bend and vibrate. Its shape and size roughly correspond to the inner edge of the air guide component carrying area 415, but it is not limited to this. The shape of the floating piece 421a can also be square, circular, or oval. , triangle and polygon; the hollow hole 421b penetrates through the center of the suspension plate 421a for gas circulation.

Referring also to FIG. 9A , FIG. 9B and FIG. 10A , the above-mentioned cavity frame 422 is stacked on the air injection hole plate 421 , and its outer shape corresponds to the air injection hole plate 421 . The actuating body 423 is stacked on the cavity frame 422, and defines a resonance chamber 426 between the cavity frame 422 and the suspension plate 421a. The insulating frame 424 is stacked on the actuating body 423, and its appearance is similar to the air blow hole plate 421. The conductive frame 425 is stacked on the insulating frame 424, and its appearance is similar to the insulating frame 424. 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, and is conductive. The electrode 425b extends inwardly from the inner edge of the conductive frame 425. In addition, the actuating body 423 further includes a piezoelectric carrier plate 423a, an adjusting resonance plate 423b and a piezoelectric plate 423c. The piezoelectric carrier plate 423a is stacked on the cavity frame 422. The adjusted resonance plate 423b is stacked on the piezoelectric carrier plate 423a. The piezoelectric plate 423c is stacked on the adjustable resonance plate 423b. The adjusted resonance plate 423b and the piezoelectric plate 423c are accommodated in the insulating frame 424, and are electrically connected to the piezoelectric plate 423c by the conductive electrode 425b of the conductive frame 425. Among them, the piezoelectric carrier plate 423a and the adjustable resonance plate 423b are both made of conductive materials. The piezoelectric carrier plate 423a has a piezoelectric pin 423d. The piezoelectric pin 423d and the conductive pin 425a are connected to the driving circuit board 43 A driving circuit (not shown) on the device is used to receive the driving signal (driving frequency and driving voltage). The driving signal is transmitted from the piezoelectric pin 423d, the piezoelectric carrier plate 423a, the adjusting resonance plate 423b, the piezoelectric plate 423c, and the conductive electrode. 425b, the conductive frame 425, and the conductive pins 425a form a loop, and the insulating frame 424 blocks the conductive frame 425 from the actuator 423 to avoid short circuit and enable the driving signal to be transmitted to the piezoelectric plate 423c. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 423c deforms due to the piezoelectric effect, thereby further driving the piezoelectric carrier plate 423a and adjusting the resonance plate 423b to generate reciprocating bending vibration.

Based on the above, the adjustable resonance 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 adjusting resonance plate 423b is greater than the thickness of the piezoelectric carrier plate 423a, and the thickness of the adjusting resonance plate 423b can be varied, thereby adjusting the vibration frequency of the actuator 423.

Please refer to Figure 9A, Figure 9B and Figure 10A at the same time. The air jet hole plate 421, the cavity frame 422, the actuator 423, the insulating frame 424 and the conductive frame 425 are stacked in sequence and positioned in the air guide component carrying area 415. , the piezoelectric actuating element 42 is urged to be positioned in the air guide component bearing area 415, and the bottom is fixed on the positioning protrusion 415b for support and positioning. Therefore, the piezoelectric actuator 42 is between the suspension plate 421a and the air guide component. A gap 421c is defined between the inner edges of the bearing area 415 for gas circulation.

Please refer to FIG. 10A . An airflow chamber 427 is formed between the above-mentioned air blow hole plate 421 and the bottom surface of the air guide component carrying area 415 . The airflow chamber 427 communicates with the resonance chamber 426 between the actuator 423, the cavity frame 422 and the suspension plate 421a through the hollow hole 421b of the air blow hole plate 421. By controlling the vibration frequency of the gas in the resonance chamber 426, it The vibration frequency of the suspended plate 421a is close to the same, so that the resonance chamber 426 and the suspended plate 421a can produce a Helmholtz resonance effect, thereby improving the gas transmission efficiency.

Please refer to FIG. 10B . When the piezoelectric plate 423 c moves toward the bottom surface away from the air guide component carrying area 415 , the piezoelectric plate 423 c drives the suspension piece 421 a of the air jet hole plate 421 to move away from the bottom surface of the air guide component carrying area 415 . , causing the volume of the airflow chamber 427 to expand rapidly, and its 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 426 The air pressure inside increases to generate a pressure gradient; as shown in FIG. 10C , when the piezoelectric plate 423c drives the suspension plate 421a of the air blow hole plate 421 to move toward the bottom surface of the air guide component carrying area 415, the gas in the resonance chamber 426 It quickly flows out through the hollow hole 421b, squeezing the gas in the air flow chamber 427, and causing the concentrated gas to quickly and massively eject out of the vent hole 415a introduced into the air guide assembly bearing area 415 in an ideal gas state close to Bernoulli's law. middle. Therefore, by repeating the actions of Figure 10B and Figure 10C, the piezoelectric plate 423c is vibrated in a reciprocating manner. According to the principle of inertia, the internal air pressure of the resonant chamber 426 after exhaust is lower than the equilibrium air pressure will guide the gas to enter the resonant chamber again. In the chamber 426, the vibration frequency of the gas in the resonance chamber 426 and the vibration frequency of the piezoelectric plate 423c are controlled to be close to the same, so as to generate the Helmholtz resonance effect and realize high-speed and large-scale gas transmission.

As shown in FIG. 11A , the gas enters through the air inlet frame opening 461 a of the outer cover 46 , enters the air inlet groove 414 of the base 41 through the air inlet 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 element 42 will absorb the gas in the air inlet path to facilitate the rapid introduction and stable flow of external air, and pass above the particle sensor 45 . At this time, the laser component 44 emits a beam through the light transmission The window 414b enters the air inlet groove 414. The air inlet groove 414 is illuminated by the gas above the particle sensor 45. When the irradiation beam contacts the suspended particles in the gas, it will scatter and produce a projected light spot. The particle sensor 45 receives the scattered light. The generated projected light points are calculated to obtain relevant information on the particle size and concentration of suspended particles contained in the gas, and the gas above the particle sensor 45 is also continuously driven and transmitted by the piezoelectric actuator 42 and introduced into the gas guide assembly carrying area 415 The vent hole 415a enters the first section 416b of the air outlet groove 416. Finally, as shown in FIG. 11C , after the gas enters the first section 416b of the gas outlet groove 416, since the piezoelectric actuator 42 will continuously transport the gas into the first section 416b, the gas in the first section 416b will be pushed to The second section 416c is finally discharged outward through the air outlet 416a and the air outlet frame opening 461b.

Referring again to Figure 12, the base 41 further includes a light trap area 417. The light trap area 417 is hollowed out from the first surface 411 to the second surface 412, and corresponds to the laser setting area 413, and the light trap area 417 passes through The light-transmitting window 414b allows the light beam emitted by the laser component 44 to be projected into it. The light trap area 417 is provided with an oblique pyramidal light trap structure 417a. The light trap structure 417a corresponds to the path of the light beam emitted by the laser component 44; in addition, , the light trap structure 417a causes the projection beam emitted by the laser component 44 to be reflected into the light trap area 417 in the oblique pyramid structure, thereby preventing the beam from being reflected to the position of the particle sensor 45, and the position of the projection beam received by the light trap structure 417a is consistent with A light trap distance d is maintained between the light-transmitting windows 414b to avoid distortion of the detection accuracy due to excessive stray light directly reflected back to the position of the particle sensor 45 after the projection beam is reflected on the light trap structure 417a.

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 can also further detect the characteristics of the introduced gas. For example, the gas is formaldehyde, ammonia, carbon monoxide, and carbon dioxide. , oxygen, ozone, etc. Therefore, the gas detection module 4 of this case further includes a first volatile organic compound sensor 47a. 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, and is in charge of the gas outlet path. The exported gas is tested to detect the concentration or characteristics of volatile organic compounds contained in the gas in the gas outlet 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 drive circuit board 43, and the second volatile organic compound sensor 47b is accommodated in the light The trap area 417 refers to the concentration or characteristics of volatile organic compounds contained in the gas introduced into the light trap area 417 through the air inlet path of the air inlet trench 414 and through the light-transmitting window 414b.

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 uses the purification module to provide a solution to purify the air quality in the car or indoor space. Solution, such a combination of gas detection module and purification module can prevent users from breathing harmful gases in the car or indoor space, and can obtain information in real time to warn users in the car or indoor space environment. It can take immediate preventive measures and is highly industrially applicable.

This case may be modified in various ways by those who are familiar with the technology, but none of them will deviate from the intended protection within the scope of the patent application.

Claims (31)

1. A gas detection and purification device, implemented in vehicles and indoor spaces, including: A shell has at least one air inlet and at least one air outlet, and a gas flow channel is provided between the air inlet and the air outlet; the bottom of the shell adopts a cylindrical shape or a long cylindrical shape. one type; A purification module is disposed in the gas flow channel and communicates with the air inlet to filter a gas introduced into the gas flow channel; An air guide fan is disposed in the gas flow channel and is disposed on one side of the purification module, guiding the gas to be introduced from the air inlet through the purification module for filtering and purification, and finally exported from the air outlet; and A gas detection module is disposed in the gas flow channel together with the purification module and is disposed on the other side of the air guide relative to the purification module. It includes a control circuit board, a gas detection body, a microprocessor, and a gas detection module. A communicator, a power unit and a battery are used to detect the gas introduced outside the housing to obtain gas detection data. The communicator receives the gas detection data from the microprocessor and is used to transmit the gas detection to the outside. The data is sent to an external device, and the external device obtains a message of the gas detection data and an alarm; Among them, the gas detection data detected by the gas detection module is processed to control the start-up or shutdown operation of the air guide fan, and the start-up operation of the air guide fan is used to guide the gas to enter through the air inlet. The purification module performs filtering and purification, and is finally exported from the air outlet, and directly corresponds to the user to provide the purified gas; the gas detection body, the microprocessor, the communicator and the power supply unit are packaged in the control circuit board Integrated and electrically connected, the power supply unit is electrically connected to the battery to provide starting operation power for the gas detection body, and the gas detection body detects and introduces the gas from outside the housing to obtain the gas detection data, and the gas detection body detects the gas. The microprocessor receives the gas detection data for calculation and processing, and controls the air guide fan to start or close. 2. The gas detection and purification device according to claim 1, wherein the purification module is a filter unit. 3. The gas detection and purification device according to claim 2, wherein the filter unit is one of an electrostatic filter, an activated carbon filter and a high-efficiency filter. 4. The gas detection and purification device according to claim 2, characterized in that a layer of chlorine dioxide cleaning factor is coated on the filter unit to inhibit viruses and bacteria in the gas. 5. The gas detection and purification device according to claim 2, characterized in that the filter unit is coated with a layer of herbal protective coating extracted from Ginkgo biloba and Japanese salt bark, forming a herbal protective anti-allergic coating. The filter can resist allergies and destroy the surface proteins of influenza viruses that pass through the filter. 6. The gas detection and purification device of claim 2, wherein the filter unit is coated with silver ions to inhibit viruses and bacteria in the gas. 7. The gas detection and purification device of 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 passes the ultraviolet light The introduced gas is decomposed by lamp irradiation and filtered and purified. 8. The gas detection and purification device of claim 2, wherein the purification module is composed of the filter unit and a photoplasma unit, and the photoplasma unit includes a nanometer light pipe. The gas is irradiated to promote decomposition of the volatile organic gas contained in the gas, thereby purifying the introduced gas. 9. The gas detection and purification device of 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 line, at least a dust collecting plate and a The boost power supply discharges high voltage through the electrode wire and adsorbs the particles contained in the introduced gas to the dust collecting plate to filter and purify the gas. 10. The gas detection and purification device according to claim 2, characterized in that the purification module is composed of the filter unit and a plasma ion unit, and the plasma ion unit includes a first electric field protective net, a An adsorption filter, a high-voltage discharge electrode, a second electric field protective net and a boost power supply, the boost power supply provides high voltage to the high-voltage discharge electrode to generate a high-voltage plasma column and carry plasma ions to decompose particles. Viruses or bacteria in the introduced gas. 11. The gas detection and purification device as claimed in claim 1, wherein the air guide is a fan. 12. The gas detection and purification device according to claim 1, wherein the air guide fan is an actuator pump. 13. The gas detection and purification device as claimed in claim 12, wherein the actuating pump includes: An inlet plate having at least one inlet hole, at least one bus slot and a bus chamber, wherein the inlet hole is used to introduce the gas, the inflow hole correspondingly penetrates the bus slot, and the bus slot Converging to the converging chamber, so that the gas introduced into the inlet hole is converging into the converging chamber; A resonance piece is connected to the inlet plate and has a hollow hole, a movable part and a fixed part. The hollow hole is located at the center of the resonance piece and corresponds to the confluence chamber of the inlet plate, and The movable part is disposed around the hollow hole and in an area opposite to the manifold chamber, and the fixed part is disposed on the outer peripheral portion of the resonance piece and is attached to the inlet plate; and A piezoelectric actuator, coupled to the resonance piece and disposed corresponding to the resonance piece; Wherein, there is a chamber space between the resonance piece and the piezoelectric actuator, so that when the piezoelectric actuator is driven, the gas is introduced from the inflow hole of the inflow plate, and passes through the manifold. The row grooves are collected into the bus chamber, and then flow through the hollow hole of the resonance piece. The piezoelectric actuator and the movable part of the resonance piece resonate to transmit the gas. 14. The gas detection and purification device as claimed in claim 13, wherein the piezoelectric actuator includes: A suspended board has a square shape and can bend and vibrate; An outer frame is provided around the outside of the suspension board; 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 that is less than or equal to a side length of the suspension board, and the piezoelectric element is attached to a surface of the suspension board for applying voltage to drive the suspension board. bending vibration. 15. The gas detection and purification device of claim 13, wherein the actuator pump further includes a first insulating sheet, a conductive sheet and a second insulating sheet, wherein the inflow plate, the resonance sheet , the piezoelectric actuator, the first insulating sheet, the conductive sheet and the second insulating sheet are stacked and assembled in sequence. 16. The gas detection and purification device according to claim 13, wherein the piezoelectric actuator includes: A suspended board has a square shape and can bend and vibrate; An outer frame is provided around the outside of the suspension board; 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 form a surface of the suspension board and a surface of the outer frame into a non-coplanar structure, and make the suspension board A surface of the suspension plate and the resonance piece maintain the chamber space; and A piezoelectric element has a side length that is less than or equal to a side length of the suspension board, and the piezoelectric element is attached to a surface of the suspension board for applying voltage to drive the suspension board. bending vibration. 17. The gas detection and purification device of claim 1, wherein the external device is one of a mobile device, a cloud processing device, and a computer system. 18. The gas detection and purification device according to claim 1, wherein the gas detection body includes: A base having: a first surface; a second surface relative to the first surface; A laser setting area is hollowed out from the first surface toward the second surface; An air inlet trench is recessed from the second surface and is adjacent to the laser setting area. The air inlet trench is provided with an air inlet and a light-transmitting window runs through both side walls to communicate with the laser setting area. ; An air guide component carrying area is recessed from the second surface, connected to the air inlet groove, and has a ventilation hole running through the bottom surface, and four corners of the air guide component carrying area are respectively provided with positioning bumps; and An air outlet groove is recessed from the first surface corresponding to the bottom surface of the air guide component carrying area, and is dug from the first surface toward the second surface in the area of the first surface that does not correspond to the air guide component carrying area. It is formed in the air, is connected with the vent hole, and is provided with an air outlet; A piezoelectric actuator element is accommodated in the bearing area of the air guide component; A driving circuit board with a cover attached to the second surface of the base; A laser component is positioned on the drive circuit board and electrically connected to it, and is correspondingly accommodated in the laser setting area, and a beam path emitted passes through the light-transmitting window and is formed with the air inlet groove orthogonal direction; A particle sensor is positioned on the driving circuit board and is electrically connected to the driving circuit board, and is correspondingly accommodated at the orthogonal position of the air inlet groove and the beam path projected by the laser component, so as to detect the inlet air passing through the Detection of particles that are grooved and irradiated by the beam projected by the laser component; and An outer cover covers the first surface of the base and has a side plate. The side plate is provided with an air inlet frame corresponding to the positions of the air inlet and the air outlet of the base. and an air outlet frame opening, the air inlet frame opening corresponds to the air inlet opening of the base, and the air outlet frame opening corresponds to the air outlet opening 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 inlet groove defines an air inlet path, and the air outlet groove defines an air inlet path. An air outlet path, whereby the piezoelectric actuator accelerates and guides the gas outside the air inlet vent of the base from the air inlet frame opening into the air inlet path defined by the air inlet groove, and passes through the air inlet channel. on the particle sensor to detect the particle concentration in the gas, and the gas is guided through the piezoelectric actuator element, and is discharged from the vent hole into the gas outlet path defined by the gas outlet groove, and finally from the base The air outlet is discharged from the air outlet frame opening. 19. The gas detection and purification device of claim 18, wherein the base further includes a light trap area, which is hollowed out from the first surface toward the second surface and corresponds to the laser setting area, The light trap area is provided with a light trap structure with an oblique conical surface, which is arranged corresponding to the light beam path. 20. The gas detection and purification device as claimed in claim 19, wherein a light trap distance is maintained between the position where the light trap structure receives the projection beam and the light-transmitting window. 21. The gas detection and purification device according to claim 18, wherein the particle sensor is a PM2.5 sensor. 22. The gas detection and purification device of claim 18, wherein the piezoelectric actuator element includes: A blow hole sheet includes a suspended sheet and a hollow hole, the suspended sheet can bend and vibrate, and the hollow hole is formed at the center of the suspended sheet; A cavity frame is loaded and stacked on the suspension sheet; An actuating body is loaded and stacked on the cavity frame to receive voltage and generate reciprocating bending vibration; an insulating frame loaded and stacked on the actuating body; and A conductive frame, the load-bearing frame is stacked on the insulating frame; Among them, the positioning bump fixed in the air guide component bearing area of the air blow hole sheet is supported and positioned, so that a gap is defined between the air blow hole sheet and the inner edge of the air guide component bearing area for the gas to circulate. , and an air flow chamber is formed between the air blow hole plate and the bottom of the air guide component carrying area, and a resonance chamber is formed between the actuator body, the cavity frame and the suspension plate, and the actuator body is driven to The air blow hole plate is driven to resonate, causing the suspended plate of the air blow hole plate to produce reciprocating vibration displacement, so as to attract the gas to enter the air flow chamber through the gap and then discharge it, thereby realizing the transmission flow of the gas. 23. The gas detection and purification device as claimed in claim 22, wherein the actuator includes: A piezoelectric carrier plate is stacked on the cavity frame; An adjusted resonance plate is loaded and stacked on the piezoelectric carrier plate; and A piezoelectric plate is stacked on the adjustable resonance plate to receive voltage and drive the piezoelectric carrier plate and the adjustable resonance plate to generate reciprocating bending vibration. 24. The gas detection and purification device of claim 18, wherein the gas detection module further includes a first volatile organic compound sensor positioned on the drive circuit board and electrically connected to the drive circuit board. In the gas outlet groove, the gas derived from the gas outlet path is detected. 25. The gas detection and purification device of claim 19, wherein the gas detection module further includes a second volatile organic compound sensor positioned on the drive circuit board and electrically connected to the drive circuit board. The light trap area detects the gas introduced into the light trap area through the air inlet path of the air inlet trench and through the light-transmitting window. 26. The gas detection and purification device according to claim 1, wherein the diameter of the overall structure of the housing is between 40mm and 120mm, and the height is between 100mm and 300mm. 27. The gas detection and purification device according to claim 1, wherein the overall structure of the housing has a diameter of 80 mm and a height of 200 mm. 28. The gas detection and purification device of claim 1, wherein the overall structure of the housing has a length between 40mm and 120mm, a width between 40mm and 120mm, and a height between 100mm and 300mm. between. 29. The gas detection and purification device of claim 1, wherein the overall structure of the housing has a length of 80 mm, a width of 80 mm, and a height of 200 mm. 30. The gas detection and purification device as claimed in claim 1, wherein the housing is portable and is disposed in a vehicle built-in space, and the vehicle built-in space is a cup holder and a central storage seat. , one of a front windshield trim platform and a rear windshield trim platform. 31. The gas detection and purification device according to claim 1, wherein the housing is embedded in an interior space of a car, and the interior space of the car contains a speaker, an air-conditioning outlet, a door trim panel, and a car door trim panel. One of a vehicle interior panel, a seat, a vehicle interior ceiling, a steering wheel, a glove compartment, a rear mirror, a sun visor and a central storage seat.