air purifier

Abstract

To provide an air purifier, in particular a device that is applied to filter a gas, detects a gas and has a function of cleaning a harmful gas in an active space.SOLUTION: An air purifier comprises: a device body 1 having at least one air inlet 1a and at least one air outlet 1b; a purifying filter material 2 arranged in the device body and constituted by alternately superposing at least one activated carbon layer 21a and at least one zeolite layer 21b, in which the activated carbon layer filters and adsorbs microparticulate matter contained in the air introduced from the air inlet, and the zeolite layer controls and absorbs a volatile organic compound contained in air introduced from the air inlet due to the combination of its own pores and hydrophobicity, thereby forming, by the introduced air, a purifying gas exhausted from the air outlet; and a gas detection module provided inside the device body and detects and outputs gas quality data of the air passing through the inlet.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an air purification device, particularly to a device that is applied to gas filtration and has the functions of detecting gas and purifying harmful gases in an activity space. [Background technology]

[0002] Modern people are increasingly paying attention to the quality of the gases around them, and particulate matter (PM), such as PM1 and PM2. 2.5 , PM 10 Gases such as benzene, carbon dioxide, total volatile organic compounds (TVOCs), and carbaldehyde are all exposed to in the environment and can affect human health, even posing a threat to life in severe cases. As increasing attention is being paid to the quality of gas within an activity space, an air purifier that can provide purified gas quality and reduce harmful gases inhaled within the activity space can filter gas within the activity space in real time, anytime and anywhere, and purify the gas within the activity space in real time if the gas quality within the activity space is poor. How to improve the efficiency of purified gas is a key research and development issue in this invention. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention provides an air purifying device, and a purification filter material inside the air purifying device is used to remove fine particulate matter (e.g., suspended particles, PM) in gas. 2.5 ) and volatile organic compounds (e.g., VOCs S ), the filtered air forms purified gas. [Means for solving the problem]

[0004] The main object of the present invention is to provide an air purifying device including: a device body having at least one air inlet and at least one air outlet; a purifying filter material provided within the device body and composed of at least one activated carbon layer and at least one zeolite layer stacked alternately, wherein the activated carbon layer filters and adsorbs fine particulate matter contained in the air introduced through the air inlet, and the zeolite layer, by combining its own pores and hydrophobicity, controls and adsorbs volatile organic compounds contained in the air introduced through the air inlet, thereby forming a purified gas from the introduced air to be discharged from the air outlet; and a gas detection module provided within the device body for detecting and outputting gas quality data of the air passing through the air inlet. [Brief explanation of the drawings]

[0005] [Figure 1] 1 is a schematic cross-sectional view of the air purifying device of the present invention. [Figure 2] 2 is a schematic diagram showing the electrical connection relationship of the gas detection module of the present invention. FIG. [Figure 3] 1 is a schematic diagram of a three-dimensional assembly of the gas detection module of the present invention (1); FIG. [Figure 4A] 1 is a schematic diagram (II) of a three-dimensional assembly of the gas detection body of the present invention; [Figure 4B] 1 is a three-dimensional assembly diagram (III) of the gas detection body of the present invention; [Figure 4C] FIG. 2 is a schematic exploded view of the gas detection body of the present invention. [Figure 5A] 1 is a schematic three-dimensional view of the base of the present invention (1); [Figure 5B] 1 is a schematic three-dimensional view of the base of the present invention (II); [Figure 6] 1 is a three-dimensional schematic diagram of the base of the present invention (III). [Figure 7A] FIG. 2 is a schematic three-dimensional view of an exploded piezoelectric actuator and a base according to the present invention. [Figure 7B] 1 is a schematic three-dimensional view of an assembled piezoelectric actuator and base of the present invention. [Figure 8A] 1 is a schematic exploded view (1) of a piezoelectric actuator according to the present invention. FIG. [Figure 8B] FIG. 2 is a schematic exploded view (II) of the piezoelectric actuator of the present invention. [Figure 9A] 1 is a cross-sectional view (1) of a piezoelectric actuator according to the present invention; [Figure 9B] 1 is a cross-sectional view (II) showing the operation of the piezoelectric actuator of the present invention. [Figure 9C] 1 is a cross-sectional view (3) showing the operation of the piezoelectric actuator of the present invention. [Figure 10A] FIG. 2 is an assembled cross-sectional view (1) of the gas detection body of the present invention. [Figure 10B] FIG. 2 is a cross-sectional view (II) of the assembled gas detection body of the present invention. [Figure 10C] FIG. 2 is an assembled cross-sectional view (III) of the gas detection body of the present invention. [Figure 11] FIG. 2 is a schematic diagram showing the radiation beam path of the laser component of the gas sensing body of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0006] The following description will describe embodiments illustrating the features and advantages of the present invention. It should be understood that the present invention may have various modifications in different aspects, all without departing from the scope of the present invention, and that the description and drawings are intended to be illustrative in nature and not to limit the present invention.

[0007] Referring to FIGS. 1 and 2, the present invention provides an air purifying device used for filtering gas, which includes a device body 1, a purifying filter material 2, a gas detection module 3 and a wind guide device 4.

[0008] The device body 1 has an air inlet 1a and at least one air outlet 1b.

[0009] The purification filter material 2 is provided in the device body 1 and comprises at least one activated carbon layer 21a and at least one zeolite layer 21b. The activated carbon layer 21a is configured to filter fine particulate matter (e.g., suspended particles, PM) contained in the air introduced through the intake port 1a.2.5 ) contained in the air introduced from the intake port 1a, and the zeolite layer 21b filters and adsorbs the volatile organic compounds (VOCs) contained in the air introduced from the intake port 1a by combining its own pores and hydrophobicity. S By controlling and adsorbing the ions, the introduced air forms purified gas.

[0010] In this embodiment, the purification filter material 2 is a material for removing fine particulate matter (suspended particles, PM 2.5 In order to improve the efficiency of adsorption and purification of fine particulate matter (PM) contained in the air, the activated carbon layer 21a and multiple zeolite layers 21b may be stacked. 2.5 In order to improve the efficiency of adsorption and purification of fine particulate matter (PM) contained in the air, the activated carbon layer 21a and the zeolite layer 21b may be stacked. 2.5 In order to improve the efficiency of adsorption and purification of activated carbon (AC) and volatile organic compounds (VOCs), a plurality of activated carbon layers 21a and a plurality of zeolite layers 21b may be stacked.

[0011] The air guide device 4 is provided inside the device body 1 and adjacent to the exhaust port 1b, and introduces gas outside the device body 1, filters and purifies it through the purification filter material 2 to form purified gas, and discharges the purified gas from the exhaust port 1b.

[0012] The gas detection module 3 is installed in the device body 1 and adjacent to the air intake 1a, detects gas data, and intelligently determines whether to start or stop the air guide device 4, and provides output to the air guide device 4 to guide the air filtering and purification operation.

[0013] 2 and 3, the gas detection module 3 includes a control circuit board 300, a gas detection main body 301, a microprocessor 302, and a communicator 303. The gas detection main body 301, microprocessor 302, and communicator 303 are packaged on the control circuit board 300, integrally formed, and electrically connected to each other. The microprocessor 302 and communicator 303 are mounted on the control circuit board 300, and the microprocessor 302 controls the detection operation of the gas detection main body 301, the gas detection main body 301 detects air pollution and outputs a detection signal, and the microprocessor 302 receives the detection signal, processes it, and outputs it, which is then provided to the communicator 303 for external communication and transmission to the external connection device 5.

[0014] 4A to 9A, the gas detection main body 301 includes a base 321, a piezoelectric actuator 322, a drive circuit board 323, a laser component 324, a particle sensor 325, an outer cover 326, and a gas sensor 327. The base 321 has a first surface 3211, a second surface 3212, a laser mounting area 3213, an air intake groove 3214, an air-conducting component mounting area 3215, and an exhaust groove 3216. The first surface 3211 and the second surface 3212 are two surfaces that are disposed opposite each other. The laser mounting area 3213 is formed by hollowing out from the first surface 3211 toward the second surface 3212. Furthermore, the outer cover 326 covers the base 321 and has a side plate 3261 that has an air intake frame opening 3261a and an exhaust frame opening 3261b. The air intake groove 3214 is recessed from the second surface 3212 and is adjacent to the laser installation area 3213. The air intake groove 3214 is provided with an air intake vent 3214a that communicates with the outside of the base 321 and corresponds to the exhaust vent 3216a of the outer lid 326. Both side walls of the air intake groove 3214 have light-transmitting windows 3214b that pass through and communicate with the laser installation area 3213. The first surface 3211 of the base 321 is covered with the outer lid 326, and the second surface 3212 is covered with the drive circuit board 323, thereby defining an air intake path by the air intake groove 3214.

[0015] The air-conducting component mounting area 3215 is recessed from the second surface 3212, communicates with the intake groove 3214, and has a ventilation hole 3215a penetrating through its bottom surface, with positioning protrusions 3215b at each of the four corners of the air-conducting component mounting area 3215. The exhaust groove 3216 is provided with an exhaust vent 3216a that is installed corresponding to the exhaust frame opening 3261b of the outer lid 326. The exhaust groove 3216 includes a first section 3216b recessed in a vertical projection area of ​​the first surface 3211 onto the air-conducting component mounting area 3215, and a second section 3216c hollowed out from the first surface 3211 toward the second surface 3212 in a region extending from the vertical projection area of ​​the air-conducting component mounting area 3215. The first section 3216b is connected to the second section 3216c to form a step, and the first section 3216b of the exhaust groove 3216 communicates with the ventilation hole 3215a of the air-conducting component mounting area 3215, and the second section 3216c of the exhaust groove 3216 communicates with the exhaust vent 3216a. When the first surface 3211 of the base 321 is covered with the outer lid 326 and the second surface 3212 is covered with the drive circuit board 323, the exhaust groove 3216 and the drive circuit board 323 together define an exhaust path.

[0016] The laser component 324 and particle sensor 325 are both mounted on the drive circuit board 323 and located within the base 321; however, the drive circuit board 323 is intentionally omitted to clearly illustrate the positions of the laser component 324, particle sensor 325, and base 321. The laser component 324 is housed within a laser installation area 3213 of the base 321, and the particle sensor 325 is housed within an air intake groove 3214 of the base 321 and is aligned with the laser component 324. The laser component 324 corresponds to a light-transmitting window 3214b through which the laser light emitted by the laser component 324 passes, thereby irradiating the air intake groove 3214. The beam path emitted by the laser component 324 passes through the light-transmitting window 3214b and is perpendicular to the air intake groove 3214. The beam emitted by the laser component 324 passes through the light-transmitting window 3214b into the intake groove 3214, irradiating the gas in the intake groove 3214. When the beam comes into contact with particles suspended in the gas, it scatters to generate a projected spot, and the particle sensor 325, located at a position perpendicular to the beam, receives the scattered projected spot and performs calculations to obtain gas detection data. Furthermore, the gas sensor 327 is positioned and electrically connected to the driving circuit board 323 and is housed in the exhaust groove 3216, thereby detecting air pollution introduced into the exhaust groove 3216. In a preferred embodiment of the present invention, the gas sensor 327 is a volatile organic compound sensor for detecting carbon dioxide or total volatile organic compound gas information, a carbaldehyde sensor for detecting carbaldehyde gas information, a bacteria sensor for detecting bacteria and fungi information, or a virus sensor for detecting virus gas information.

[0017] The piezoelectric actuator 32 is accommodated in a square air-conducting component mounting area 3215 of the base 321. The air-conducting component mounting area 3215 is connected to the air intake groove 3214. When the piezoelectric actuator 32 is activated, gas in the air intake groove 3214 is drawn into the piezoelectric actuator 32, and the gas passes through the ventilation hole 3215a in the air-conducting component mounting area 3215 and enters the exhaust groove 3216. The driving circuit board 323 covers the second surface 3212 of the base 321. The laser component 324 is mounted on and electrically connected to the driving circuit board 323. The particle sensor 325 is also mounted on and electrically connected to the driving circuit board 323. When the outer cover 326 covers the base 321, the exhaust vent 3216a corresponds to the air intake vent 3214a of the base 321, and the exhaust frame opening 3261b corresponds to the exhaust vent 3216a of the base 321.

[0018] The piezoelectric actuator 32 includes a gas orifice plate 3221, a chamber housing 3222, an actuator 3223, an insulating housing 3224, and a conductive housing 3225. The gas orifice plate 3221 is made of a flexible material and has a suspension plate 3221a and a hollow hole 3221b. The suspension plate 3221a is a sheet-like structure that vibrates in bending, and its shape and dimensions correspond to the inner edge of the air-conducting component mounting area 3215. The hollow hole 3221b penetrates the center of the suspension plate 3221a to allow gas to flow through. In a preferred embodiment of the present invention, the shape of the suspension plate 3221a may be any of a square, circle, ellipse, triangle, and polygon.

[0019] The chamber housing 3222 is placed on the gas orifice plate 3221, and its appearance corresponds to that of the gas orifice plate 3221. The actuator 3223 is placed on the chamber housing 3222, and defines a resonance chamber 3226 between the chamber housing 3222 and the suspension plate 3221a. The insulating housing 3224 is placed on the actuator 3223, and its appearance is similar to that of the chamber housing 3222. The conductive housing 3225 is placed on the insulating housing 3224, and its appearance is similar to that of the insulating housing 3224. The conductive housing 3225 has a conductive pin 3225a and a conductive electrode 3225b, and the conductive pin 3225a extends outward from the outer edge of the conductive housing 3225, and the conductive electrode 3225b extends inward from the inner edge of the conductive housing 3225.

[0020] The actuator 3223 further includes a piezoelectric carrier plate 3223a, a resonance adjustment plate 3223b, and a piezoelectric plate 3223c. The piezoelectric carrier plate 3223a is stacked on the chamber housing 3222. The resonance adjustment plate 3223b is stacked on the piezoelectric carrier plate 3223a. The piezoelectric plate 3223c is stacked on the resonance adjustment plate 3223b. The resonance adjustment plate 3223b and the piezoelectric plate 3223c are housed in an insulating housing 3224. The piezoelectric plate 3223c is electrically connected to the piezoelectric plate 3223c by a conductive electrode 3225b of the conductive housing 3225. In a preferred embodiment of the present invention, the piezoelectric carrier plate 3223a and the resonance adjustment plate 3223b are both made of a conductive material. The piezoelectric carrier plate 3223a has piezoelectric pins 3223d, and the piezoelectric pins 3223d and the conductive pins 3225a are connected to a drive circuit (not shown) on the drive circuit board 323 to receive a drive signal (which may have a drive frequency and a drive voltage). The drive signal can form a loop through the piezoelectric pins 3223d, the piezoelectric carrier plate 3223a, the resonance adjustment plate 3223b, the piezoelectric plate 3223c, the conductive electrode 3225b, the conductive housing 3225, and the conductive pins 3225a. The insulating housing 3224 isolates the conductive housing 3225 from the actuator 3223 to prevent short-circuiting, and the drive signal can be transmitted to the piezoelectric plate 3223c. After receiving the drive signal, the piezoelectric plate 3223c deforms due to the piezoelectric effect, further driving the piezoelectric carrier plate 3223a and the resonance adjustment plate 3223b to generate reciprocating bending vibration.

[0021] The resonance adjustment plate 3223b is located between the piezoelectric plate 3223c and the piezoelectric carrier plate 3223a as a buffer between them, and can adjust the vibration frequency of the piezoelectric carrier plate 3223a. Basically, the thickness of the resonance adjustment plate 3223b is greater than that of the piezoelectric carrier plate 3223a, and changing the thickness of the resonance adjustment plate 3223b adjusts the vibration frequency of the actuator 3223. The gas orifice plate 3221, the chamber housing 3222, the actuator 3223, the insulating housing 3224, and the conductive housing 3225 are stacked and positioned sequentially within the pneumatic component mounting area 3215, thereby positioning the piezoelectric actuator 32 within the pneumatic component mounting area 3215. The piezoelectric actuator 32 defines a gap 3221c between the suspension plate 3221a and the inner edge of the pneumatic component mounting area 3215, through which gas can pass.

[0022] An airflow chamber 3227 is formed between the gas orifice plate 3221 and the bottom surface of the air-conducting component mounting area 3215. The airflow chamber 3227 communicates with a resonance chamber 3226 between the actuator 3223, the gas orifice plate 3221, and the suspension plate 3221a via a hollow hole 3221b in the gas orifice plate 3221. By making the vibration frequency of the gas in the resonance chamber 3226 the same as the vibration frequency of the suspension plate 3221a, the resonance chamber 3226 and the suspension plate 3221a generate a Helmholtz resonance effect, thereby improving gas transport efficiency. When the piezoelectric plate 3223c moves away from the bottom surface of the air-conducting component mounting area 3215, the piezoelectric plate 3223c moves the suspension plate 3221a of the gas orifice plate 3221 away from the bottom surface of the air-conducting component mounting area 3215, causing the volume of the airflow chamber 3227 to expand suddenly, the internal pressure to decrease, generating negative pressure, and the gas outside the piezoelectric actuator 32 is sucked in and flows in through the gap 3221c, passes through the hollow hole 3221b, and enters the resonating chamber 3226, increasing the air pressure inside the resonating chamber 3226 and generating a pressure gradient. When the piezoelectric plate 3223c moves the suspension plate 3221a of the gas orifice plate 3221 to the bottom of the air-conducting component mounting area 3215, the gas in the resonance chamber 3226 quickly flows out through the hollow hole 3221b, squeezing out the gas in the airflow chamber 3227, and the combined gas is quickly and massively ejected in an ideal gas state close to Bernoulli's theorem, and introduced into the ventilation hole 3215a of the air-conducting component mounting area 3215.

[0023] By repeating the operations shown in Figures 9B and 9C, the piezoelectric plate 3223c vibrates back and forth, and according to the principle of inertia, when the internal air pressure of the resonating chamber 3226 after exhaust becomes lower than the equilibrium air pressure, the gas is guided back into the resonating chamber 3226. In this way, by controlling the vibration frequency of the gas in the resonating chamber 3226 to be the same as the vibration frequency of the piezoelectric plate 3223c, a Helmholtz resonance effect is generated, achieving high-speed and large-volume gas transport.

[0024] 10A to 10C and 11, all gas enters through the intake frame port 3261a of the outer cover 326, passes through the intake vent 3214a into the intake groove 3214 of the base 321, and flows to the position of the particle sensor 325. In addition, the continuous drive of the piezoelectric actuator 32 absorbs the gas in the intake path, allowing the external gas to be quickly introduced and circulate steadily, passing above the particle sensor 325. At this time, the beam emitted by the laser component 324 passes through the light-transmitting window 3214b and enters the intake groove 3214, which then passes above the particle sensor 325. When the beam from the particle sensor 325 hits the particles suspended in the gas, scattering occurs and a projection spot is generated. The particle sensor 325 receives the scattered projection spot and performs calculations, thereby obtaining related information such as the particle size and concentration of the particles suspended in the gas. The gas above the particle sensor 325 is also introduced into the ventilation hole 3215a of the air-conducting component mounting area 3215 by the continuous drive of the piezoelectric actuator 32, and enters the exhaust groove 3216. Finally, after the gas enters the exhaust groove 3216, the piezoelectric actuator 32 continues to transport the gas to the exhaust groove 3216, so that the gas in the exhaust groove 3216 is pushed out and discharged to the outside through the exhaust vent 3216a and the exhaust frame port 3261b.

[0025] As described above, the air purifying device provided by the present invention has the gas detection module 3 installed inside the device body 1 of the air purifying device. When the particulate sensor 325 of the gas detection module 3 detects harmful gases in the gas, the air guide device 4 is activated. The air guide device 4 intelligently guides the air to be introduced into the device body 1, and the activated carbon layer 21a and the zeolite layer 21b of the purification filter material 2 detect suspended particles (particulate matter, PM) in the gas. 2.5 ) and volatile organic compounds (e.g., VOCs S) and the introduced air forms purified gas, thereby providing purified gas and reducing harmful gases that are breathed in the activity space. Thus, the present invention uses the activated carbon layer 21a and zeolite layer 21b in the purification filter material 2 inside the device body 1 in combination with the air guide device 4 to improve the efficiency of purified gas in the activity space. Therefore, those skilled in the art can make various modifications to the present invention without departing from the scope defined by the claims. [Explanation of symbols]

[0026] 1. Device body 1a... Air intake 1b... Exhaust port 2. Purifying filter material 21a... Activated carbon layer 21b... Zeolite layer 3... Gas detection module 300... Control circuit board 301... Gas detector body 302... Microprocessor 303...Communication device 321... Kiza 3211...first surface 3212... second surface 3213... Laser installation area 3214... Intake groove 3214a... Intake vent 3214b... Light-transmitting window 3215... Air conduction component mounting area 3215a... Ventilation hole 3215b... Positioning protrusion 3216... Exhaust groove 3216a... Exhaust vent 3216b... First section 3216c... Second section 3221... Gas orifice plate 3221a... Suspension plate 3221b... Hollow hole 3221c... void 3222... Chamber housing 3223... Actuator 3223a... Piezoelectric carrier plate 3223b... Resonance adjustment plate 3223c... Piezoelectric plate 3223d... Piezoelectric pin 3224... Insulated enclosure 3225... Conductive housing 3225a... Conductive pin 3225b... Conductive electrode 3226... Resonating chamber 3227... Airflow Chamber 322... Piezoelectric Actuator 323...Drive circuit board 324... Laser parts 325... Particle sensor 326... Outer lid 3261... Side panel 3261a... Intake frame opening 3261b... Exhaust frame opening 327... Gas sensor 4... Air guide device 5... External connection devices

Claims

1. a device body having at least one air inlet and at least one air outlet; a purification filter material provided within the device body and composed of at least one activated carbon layer and at least one zeolite layer alternately stacked together, wherein the activated carbon layer filters and adsorbs fine particulate matter contained in the air introduced from the air inlet, and the zeolite layer controls and adsorbs volatile organic compounds contained in the air introduced from the air inlet by combining its own pores and hydrophobicity, thereby converting the introduced air into purified gas to be discharged from the exhaust port; a gas detection module provided in the device body, which detects and outputs gas quality data of the air passing through the intake port; an air guide device provided within the device body and adjacent to the exhaust port, which introduces the air outside the device body, filters and purifies it through the purification filter material, and guides it to form the purified gas, and discharges the purified gas from the exhaust port; Including, The gas detection module includes a control circuit board, a gas detection main body, a microprocessor, and a communication device, and the gas detection main body, the microprocessor, and the communication device are packaged and integrally formed on the control circuit board and electrically connected to each other. The gas quality data detected by the gas detection module is output and provided to the air guidance device so that it intelligently determines whether to start or stop the air guidance device and guides the air filtering and purification operation. The gas quality data of the air detected by the gas detection module is output and provided to an externally connected device so that the gas quality data of the air and a warning notification are displayed.

2. 2. The air purifying device according to claim 1, wherein the at least one zeolite layer includes a plurality of zeolite layers, and the purification filter material is configured by alternately stacking the activated carbon layer and the plurality of zeolite layers to improve the efficiency of adsorption and purification of the fine particulate matter and volatile organic compounds contained in the air.

3. 2. The air purifying device according to claim 1, wherein the at least one activated carbon layer includes a plurality of activated carbon layers, and the purification filter material is configured by alternately stacking the plurality of activated carbon layers and the zeolite layers to improve the efficiency of adsorption and purification of the fine particulate matter and the volatile organic compounds contained in the air.

4. 2. The air purifying device according to claim 1, wherein the at least one activated carbon layer includes a plurality of activated carbon layers, the at least one zeolite layer includes a plurality of zeolite layers, and the purification filter material is configured by stacking the plurality of activated carbon layers and the plurality of zeolite layers to improve the efficiency of adsorption and purification of the fine particulate matter and the volatile organic compounds contained in the air.

5. An air purification device as described in claim 1, characterized in that the microprocessor receives and processes the gas quality data detected by the gas detection module, controls the start or stop operation of the air guide device, the communicator transmits the gas quality data received by the microprocessor, communicates with the outside and transmits it to the external connection device, and the external connection device acquires, records and issues an alarm.

6. The gas detection body is a base having a first surface, a second surface opposite to the first surface, a laser mounting 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 mounting area, the air intake groove having an air intake vent hole and light-transmitting windows penetrating both side walls and communicating with the laser mounting area, an air conduction component mounting area formed by recessing from the second surface, communicating with the air intake groove and having an air vent hole penetrating on its bottom surface and having positioning protrusions at each of its four corners, and an exhaust groove formed by hollowing out from the first surface toward the second surface in an area of ​​the first surface corresponding to the recess in the bottom surface of the air conduction component mounting area and not corresponding to the air conduction component mounting area, the exhaust groove communicating with the air vent hole and having an exhaust vent hole a piezoelectric actuator accommodated in the air-conducting component mounting area; a drive circuit board that is covered and closely attached to the second surface of the base; a laser component positioned and installed on the driving circuit board and electrically connected thereto, accommodated in the laser installation area, and having an emitted beam path passing through the light transmission window and perpendicular to the intake groove; a particle sensor positioned and electrically connected to the drive circuit board, accommodated in a position perpendicular to the air intake groove and the beam path emitted by the laser component, for detecting particles contained in the air that passes through the air intake groove and is irradiated with the beam emitted by the laser component; an outer lid covering the first surface of the base and having a side plate, wherein an intake frame opening and an exhaust frame opening are provided on the side plate at positions corresponding to the intake vent opening and the exhaust vent opening of the base, respectively, and the intake frame opening corresponds to the intake vent opening of the base, and the exhaust frame opening corresponds to the exhaust vent opening of the base; Including, 6. The air purifying device of claim 5, wherein the outer cover covers the first surface of the base, the driving circuit board covers the second surface, the intake groove defines an intake path, and the exhaust groove defines an exhaust path, so that the piezoelectric actuator quickly guides the purified gas outside the intake vent of the base from the intake frame opening to the intake path defined by the intake groove, and detects the particle concentration of particles contained in the air through the particle sensor, and the air is guided by the piezoelectric actuator and discharged from the ventilation hole to the exhaust path defined by the exhaust groove, and finally discharged from the exhaust vent of the base to the exhaust frame opening.

7. The particulate matter sensor is PM ２．５ 7. The air purifying device according to claim 6, further comprising a volatile organic compound sensor positioned on and electrically connected to the drive circuit board, housed in the exhaust groove, for detecting volatile organic compounds contained in the air guided through the exhaust path.

8. The piezoelectric actuator a gas orifice plate having a suspension plate and a hollow hole, the suspension plate being capable of bending vibration, the hollow hole being formed at a central position of the suspension plate; a chamber housing placed on the suspension plate; an actuator that is placed on top of the chamber housing and includes a piezoelectric carrier plate, a resonance adjustment plate, and a piezoelectric plate, wherein the piezoelectric carrier plate is placed on top of the chamber housing, the resonance adjustment plate is placed on top of the piezoelectric carrier plate, and the piezoelectric plate is placed on top of the resonance adjustment plate, and receives a voltage to drive the piezoelectric carrier plate and the resonance adjustment plate to generate reciprocating bending vibration; an insulating housing placed over the actuator; a conductive housing placed on top of the insulating housing; Including, 7. The air purifying device according to claim 6, wherein the gas orifice plate is fixedly mounted on the positioning protrusion of the air-conducting component mounting area, and defines a gap surrounding the outside of the gas orifice plate for the air to flow through; an airflow chamber is formed between the gas orifice plate and the bottom of the air-conducting component mounting area; a resonance chamber is formed between the actuator, the chamber housing and the suspension plate; the actuator is driven to resonate the gas orifice plate, causing the suspension plate of the gas orifice plate to vibrate back and forth, so that the air is sucked in through the gap, enters the airflow chamber, and is then discharged, thereby realizing the air transport flow.

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