CN115138143A

CN115138143A - Air purifying device

Info

Publication number: CN115138143A
Application number: CN202110330221.5A
Authority: CN
Inventors: 莫皓然; 吴锦铨; 林景松; 韩永隆; 黄启峰
Original assignee: Microjet Technology Co Ltd
Current assignee: Microjet Technology Co Ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-10-04

Abstract

The invention is an air purification device, comprising: the device comprises a device main body, a control device and a control device, wherein the device main body is provided with at least one air inlet and at least one air outlet; a purifying filter material which is arranged in the device main body and is formed by overlapping at least one active carbon layer and at least one zeolite layer, wherein the active carbon layer filters and adsorbs particles contained in the air introduced from the air inlet, the zeolite layer controls and adsorbs volatile organic compounds contained in the air introduced from the air inlet by means of the mixing of self pores and hydrophobicity, and the introduced air is promoted to form a purified gas to be discharged from the air outlet; and the gas detection module is arranged in the device main body and used for detecting and outputting gas quality data of air passing through the air inlet.

Description

Air purifying device

[ technical field ] A method for producing a semiconductor device

An air purifying device is disclosed, which is especially suitable for filtering air, detecting air and purifying harmful air in the space.

[ background of the invention ]

Modern people pay more and more attention to the quality of gas around life, and suspended Particles (PM) such as PM ₁ 、PM _2.5 、PM ₁₀ Gases such as carbon dioxide, total Volatile Organic Compound (TVOC), formaldehyde, etc. can be exposed in the environment to affect human health, and even seriously harm life. The quality of gas in the activity space is gradually paid attention by people, so that the air purification device capable of providing purified gas quality to reduce harmful gas breathed in the activity space can filter the quality of gas in the activity space at any time and any place in real time, and can purify the gas in the activity space in real time when the quality of gas in the activity space is poor.

[ summary of the invention ]

The invention provides an air purifier, which uses a purifying filter material in the air purifier to remove particles (such as suspended particles, PM) in the air _2.5 ) And volatile organic compounds (e.g., VOCS) to promote the formation of a purified gas from the filtered air.

The main purpose of this scheme is to provide an air purification device, includes: the device comprises a device main body, a control device and a control device, wherein the device main body is provided with at least one air inlet and at least one air outlet; the purification filter material is arranged in the device main body and is formed by overlapping at least one activated carbon layer and at least one zeolite layer, wherein the activated carbon layer filters and adsorbs particles 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 means of the mixing of self pores and hydrophobicity so as to promote the introduced air to form purified gas and discharge the purified gas from the air outlet; and the gas detection module is arranged in the device main body and used for detecting and outputting gas quality data of air passing through the air inlet.

[ description of the drawings ]

Fig. 1 is a schematic sectional view of an air cleaning apparatus according to the present invention.

FIG. 2 is a schematic diagram of the electrical connection of the gas detection module of the present invention.

Fig. 3 is a schematic perspective assembly view (one) of the gas detection module of the present invention.

Fig. 4A is a schematic perspective assembly view of the gas detecting main body according to the second embodiment of the present invention.

Fig. 4B is a schematic three-dimensional assembly diagram of the gas detection main body according to the present invention.

Fig. 4C is a schematic perspective exploded view of the gas detecting body according to the present invention.

Fig. 5A is a perspective view of the base according to the present invention.

Fig. 5B is a perspective view of the base according to the second embodiment of the present invention.

Fig. 6 is a perspective view of the base of the present invention (iii).

Fig. 7A is an exploded perspective view of the piezoelectric actuator and the base according to the present invention.

Fig. 7B is a perspective view of the piezoelectric actuator and base assembly of the present invention.

Fig. 8A is a perspective exploded view of the piezoelectric actuator according to the present invention.

Fig. 8B is a perspective exploded view of the piezoelectric actuator according to the present invention (ii).

Fig. 9A is a cross-sectional operation diagram (i) of the piezoelectric actuator according to the present invention.

Fig. 9B is a cross-sectional operation diagram of the piezoelectric actuator according to the present invention (ii).

Fig. 9C is a cross-sectional operation diagram (iii) of the piezoelectric actuator according to the present invention.

FIG. 10A is a sectional view of the gas detecting body assembly of the present invention.

FIG. 10B is a sectional view of the gas detecting body assembly of the present invention.

Fig. 10C is a sectional view of the gas detecting body assembly of the present invention (iii).

FIG. 11 is a schematic diagram of the path of the laser beam emitted by the laser assembly of the gas detection body of the present invention.

[ notation ] to show

1: device body

1a: air inlet

1b: air outlet

2: purifying filter material

21a: activated carbon layer

21b: zeolite layer

3: gas detection module

300: control circuit board

301: gas detection body

302: microprocessor

303: communication device

321: base seat

3211: first surface

3212: second surface

3213: laser setting area

3214: air inlet groove

3214a: air inlet port

3214b: light-transmitting window

3215: air guide assembly bearing area

3215a: vent hole

3215b: positioning lug

3216: air outlet groove

3216a: air outlet port

3216b: first interval

3216c: second interval

3221: air injection hole sheet

3221a: suspension plate

3221b: hollow hole

3221c: voids

3222: cavity frame

3223: actuating body

3223a: piezoelectric support plate

3223b: tuning the resonator plate

3223c: piezoelectric plate

3223d: piezoelectric pin

3224: insulating frame

3225: conductive frame

3225a: conductive pin

3225b: conductive electrode

3226: resonance chamber

3227: airflow chamber

322: piezoelectric actuator

323: driving circuit board

324: laser assembly

325: particle sensor

326: outer cover

3261: side plate

3261a: air inlet frame port

3261b: air outlet frame port

327: gas sensor

4: air guide machine

5: external connection device

[ detailed description ] embodiments

Embodiments that embody features and advantages of the invention are described in detail in the description that follows. It will be understood that the present invention is capable of modification in various respects, all without departing from the scope of the present invention, and that the description and drawings are to be taken as illustrative in nature and not restrictive.

Referring to fig. 1 and 2, an air purifying apparatus for filtering a gas is provided, which includes: a device main body 1, a purification filter material 2, a gas detection module 3 and a blower 4.

The device body 1 has an inlet 1a and at least one outlet 1b.

The purification filter material 2 is provided in the device main body 1 and is composed of at least one activated carbon layer 21a and at least one zeolite layer 21b, wherein the activated carbon layer 21a filters and adsorbs particles (e.g., suspended particles, PM) contained in the air introduced from the air inlet 1a _2.5 ) The zeolite layer 21b controls and adsorbs volatile organic compounds (for example, VOCS) contained in the air introduced from the air inlet 1a by mixing its own pores and hydrophobicity, thereby promoting the introduction of the air to form a purge gas.

In this embodiment, the purification filter material 2 can be formed by stacking an activated carbon layer 21a and a plurality of zeolite layers 21b to lift particles (suspended particles, PM) contained in the air _2.5 ) And the efficiency of adsorbing and purifying Volatile Organic Compounds (VOCs). Or the purification filter material 2 can be formed by stacking a plurality of activated carbon layers 21a and a zeolite layer 21b to lift particles (suspended particles, PM) contained in the air _2.5 ) And the efficiency of the adsorption and purification of Volatile Organic Compounds (VOCs). Or the purification filter medium 2 is composed of a plurality of activated carbon layers 21a and a plurality of zeolite layers 21b stacked on each other to lift particles (suspended particles, PM) contained in the air _2.5 ) And volatilityEfficiency of adsorption purification of Organic Substances (VOCs).

The air guide 4 is disposed in the apparatus main body 1 and adjacent to the air outlet 1b, and guides the air outside the apparatus main body 1 to pass through the cleaning filter material 2 for filtering and cleaning to form a cleaned air, and to promote the cleaned air to be discharged from the air outlet 1b.

The gas detection module 3 is disposed in the device body 1 and adjacent to the gas inlet 1a, and is configured to detect gas data, and provide the detected gas data to the air guide 4 for outputting and intelligently determining whether to start or stop the air guide so as to implement the air guide filtering and purifying operation.

Furthermore, as shown in fig. 2 and 3, the gas detecting module 3 includes a control circuit board 300, a gas detecting body 301, a microprocessor 302 and a communicator 303. The gas detection body 301, the microprocessor 302 and the communicator 303 are packaged on the control circuit board 300 to form a whole and are electrically connected with each other. The microprocessor 302 and the communicator 303 are disposed on the control circuit board 300, the microprocessor 302 controls the detection operation of the gas detection body 301, the gas detection body 301 detects gas pollution and outputs a detection signal, and the microprocessor 302 receives the detection signal and processes the output to provide the communicator 303 with external communication to transmit the external communication to the external connection device 5.

For further explanation, referring to fig. 4A to fig. 9A, the gas detecting body 301 includes a base 321, a piezoelectric actuator 322, a driving circuit board 323, a laser module 324, a particle sensor 325, a cover 326, and a gas sensor 327. The base 321 has a first surface 3211, a second surface 3212, a laser installation region 3213, an air inlet groove 3214, an air guide assembly supporting region 3215, and an air outlet groove 3216. The first surface 3211 and the second surface 3212 are two oppositely disposed surfaces. The laser assembly 324 is hollowed out from the first surface 3211 toward the second surface 3212. In addition, the cover 326 covers the base 321 and has a side plate 3261, and the side plate 3261 has an inlet frame port 3261a and an outlet frame port 3261b. The air inlet groove 3214 is recessed from the second surface 3212 and is adjacent to the laser disposing region 3213. The air inlet groove 3214 has an air inlet port 3214a communicating with the outside of the base 321 and corresponding to the air outlet port 3216a of the cover 326, and two sidewalls of the air inlet groove 3214 penetrate through the light-transmitting window 3214b of the piezoelectric actuator 32 and communicate with the laser installation region 3213. Therefore, the first surface 3211 of the base 321 is covered by the cover 326, and the second surface 3212 is covered by the driving circuit board 323, so that the air inlet channel 3214 defines an air inlet path.

The air guide element supporting region 3215 is formed by recessing the second surface 3212, and is connected to the air inlet groove 3214, and has a through hole 3215a at the bottom, and positioning protrusions 3215b at four corners of the air guide element supporting region 3215. The air outlet trench 3216 is provided with an air outlet 3216a, and the air outlet 3216a is disposed corresponding to the air outlet 3261b of the outer cover 326. The air outlet trench 3216 includes a first region 3216b formed by recessing the first surface 3211 in a direction perpendicular to the vertical projection area of the air guide device supporting region 3215, and a second region 3216c formed by hollowing out the first surface 3211 to the second surface 3212, wherein the first region 3216b and the second region 3216c are connected to form a step, the first region 3216b of the air outlet trench 3216 is communicated with the air hole 3215a of the air guide device supporting region 3215, and the second region 3216c of the air outlet trench 3216 is communicated with the air outlet port 3216a. Therefore, when the first surface 3211 of the base 321 is covered by the cover 326 and the second surface 3212 is covered by the driving circuit board 323, the air outlet trench 3216 and the driving circuit board 323 define an air outlet path.

In addition, the laser assembly 324 and the particle sensor 325 are disposed on the driving circuit board 323 and located in the base 321, and in order to clearly illustrate the positions of the laser assembly 324 and the particle sensor 325 and the base 321, the driving circuit board 323 is omitted, wherein the laser assembly 324 is accommodated in the laser installation region 3213 of the base 321, and the particle sensor 325 is accommodated in the air inlet groove 3214 of the base 321 and aligned with the laser assembly 324. In addition, the laser assembly 324 corresponds to the light-transmitting window 3214b, and the light-transmitting window 3214b allows the laser emitted by the laser assembly 324 to pass through, so that the laser irradiates the air inlet groove 3214. The laser assembly 324 emits a light beam that passes through the light-transmitting window 3214b and is orthogonal to the air inlet groove 3214. The laser assembly 324 emits a light beam into the gas inlet groove 3214 through the light-transmitting window 3214b, and the detected data in the gas inlet groove 3214 is irradiated, scattered when the light beam contacts the aerosol in the gas, and generates a projected light spot, so that the particle sensor 325 is located at the orthogonal position and receives the projected light spot generated by scattering to perform calculation, thereby obtaining the detected data of the gas. In addition, the gas sensor 327 is disposed on the driving circuit board 323 and electrically connected thereto, and is accommodated in the gas outlet trench 3216 for detecting gas pollution introduced into the gas outlet trench 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; or a formaldehyde sensor for detecting formaldehyde gas information; or a bacteria sensor for detecting bacteria and fungus information; or a virus sensor, for detecting virus gas information.

The piezoelectric actuator 32 is accommodated in the square air guide bearing region 3215 of the base 321. In addition, the air guide bearing region 3215 is communicated with the air inlet groove 3214, and when the piezoelectric actuator 32 is actuated, air in the air inlet groove 3214 is drawn into the piezoelectric actuator 32, and the air passes through the vent holes 3215a of the air guide bearing region 3215 and enters the air outlet groove 3216. The driving circuit board 323 covers the second surface 3212 of the base 321. The laser module 324 is disposed on the driving circuit board 323 and electrically connected thereto. The particle sensor 325 is also disposed on the driving circuit board 323 and electrically connected thereto. When the cover 326 covers the base 321, the air outlet port 3216a corresponds to the air inlet port 3214a of the base 321, and the air outlet frame port 3261b corresponds to the air outlet port 3216a of the base 321.

The piezoelectric actuator 32 includes an air hole 3221, a cavity frame 3222, an actuator 3223, an insulating frame 3224, and a conductive frame 3225. The air injection hole 3221 is made of flexible material and has a suspension piece 3221a and a hollow hole 3221b, the suspension piece 3221a is a bending and vibrating sheet-like structure, the shape and size of which correspond to the inner edge of the air guide assembly supporting region 3215, and the hollow hole 3221b penetrates through the center of the suspension piece 3221a to allow air to flow therethrough. In the preferred embodiment of the present invention, the shape of the suspension plate 3221a may be one of a square shape, a figure shape, an oval shape, a triangle shape and a polygon shape.

And the cavity frame 3222 is stacked on the air injection hole piece 3221, and has an appearance corresponding to the air injection hole piece 3221. The actuating body 3223 is stacked on the cavity frame 3222, and defines a resonant cavity 3226 with the air injection hole piece 3221 and the suspension piece 3221 a. An insulating frame 3224 is stacked on the actuating body 3223, and has an appearance similar to that of the cavity frame 3222. The conductive frame 3225 is stacked on the insulating frame 3224, and has an appearance similar to that of the insulating frame 3224, and the conductive frame 3225 has a conductive pin 3225a and a conductive electrode 3225b extending outward from an outer edge of the conductive pin 3225a, and the conductive electrode 3225b extends inward from an inner edge of the conductive frame 3225.

In addition, the actuator 3223 further includes a piezoelectric carrier 3223a, an adjusting resonator plate 3223b, and a piezoelectric plate 3223c. The piezoelectric carrier plate 3223a is stacked on the cavity frame 3222. The tuning resonator plate 3223b is stacked on the piezoelectric carrier plate 3223 a. The piezoelectric plate 3223c is stacked on the tuning resonator plate 3223 b. The tuning resonator plate 3223b and the piezoelectric plate 3223c are accommodated in an insulating frame 3224. And electrically connected to the piezoelectric plate 3223c by the conductive electrode 3225b of the conductive frame 3225. In the preferred embodiment of the present invention, the piezoelectric carrier 3223a and the tuning resonator plate 3223b are both made of conductive materials. The piezoelectric support plate 3223a has a piezoelectric pin 3223d, and the piezoelectric pin 3223d and the conductive pin 3225a are connected to a driving circuit (not shown) on the driving circuit board 323 to receive a driving signal (which may be a driving frequency and a driving voltage), so that the driving signal forms a loop by the piezoelectric pin 3223d, the piezoelectric support plate 3223a, the tuning circuit plate 3223b, the piezoelectric plate 3223c, the conductive electrode 3225b, the conductive frame 3225 and the conductive pin 3225a, and the insulating frame 3224 separates the conductive frame 3225 from the actuator 3223 to prevent a short circuit phenomenon, so that the driving signal is transmitted to the piezoelectric plate 3223c. After receiving the driving signal, the piezoelectric plate 3223c is deformed by the piezoelectric effect, and further drives the piezoelectric support plate 3223a and the tuning plate 3223b to generate a reciprocating bending vibration.

The tuning resonance plate 3223b is located between the piezoelectric plate 3223c and the piezoelectric support plate 3223a, and serves as a buffer therebetween to adjust the vibration frequency of the piezoelectric support plate 3223 a. Basically, the tuning plate 3223b has a thickness greater than that of the piezoelectric carrier plate 3223a, and the frequency of vibration of the actuator 3223 is tuned by varying the thickness of the tuning plate 3223 b. The air injection hole sheet 3221, the cavity frame 3222, the actuating body 3223, the insulating frame 3224 and the conductive frame 3225 are sequentially stacked and positioned in the air guide device supporting region 3215, so that the piezoelectric actuator 32 is positioned in the air guide device supporting region 3215, and the piezoelectric actuator 32 defines a gap 3221c between the suspension sheet 3221a and an inner edge of the air guide device supporting region 3215 for air circulation.

An air flow chamber 3227 is formed between the air injection hole piece 3221 and the bottom surface of the air guide assembly carrying region 3215. The air flow chamber 3227 is communicated with the resonant chamber 3226 among the actuating body 3223, the air injection hole piece 3221 and the suspension piece 3221a through the hollow hole 3221b of the air injection hole piece 3221, and the vibration frequency of the air in the resonant chamber 3226 is approximately the same as the vibration frequency of the suspension piece 3221a, so that the resonant chamber 3226 and the suspension piece 3221a can generate a Helmholtz resonance effect (Helmholtz resonance) to improve the transmission efficiency of the air. When the piezoelectric plate 3223c moves away from the bottom surface of the air guide assembly supporting region 3215, the piezoelectric plate 3223c drives the suspension piece 3221a of the air injection hole piece 3221 to move away from the bottom surface of the air guide assembly supporting region 3215, so that the volume of the air flow chamber 3227 expands sharply, the internal pressure decreases to generate a negative pressure, air outside the piezoelectric actuator 32 is drawn in through the gap 3221c and enters the resonance chamber 3226 through the hollow hole 3221b, and the air pressure in the resonance chamber 3226 is increased to generate a pressure gradient. When the piezoelectric plate 3223c drives the suspension piece 3221a of the air injection hole piece 3221 to move towards the bottom surface of the air guide assembly bearing area 3215, the gas in the resonance chamber 3226 flows out quickly through the hollow hole 3221b, presses the gas in the gas flow chamber 3227, and causes the converged gas to be injected into the air holes 3215a of the air guide assembly bearing area 3215 quickly and massively in an ideal gas state close to the bernoulli's law.

By repeating the operations shown in fig. 9B and 9C, the piezoelectric plate 3223C vibrates in a reciprocating manner, and according to the principle of inertia, when the gas pressure inside the exhausted resonant chamber 3226 is lower than the equilibrium gas pressure, the gas is guided to enter the resonant chamber 3226 again, so that the vibration frequency of the gas in the resonant chamber 3226 is controlled to be approximately the same as the vibration frequency of the piezoelectric plate 3223C, so as to generate the helmholtz resonance effect, and thus, a high-speed and large-amount gas transmission is realized.

Referring to fig. 10A to 10C and fig. 11, the gas enters from the gas inlet port 3214a of the cover 326, enters the gas inlet groove 3214 of the base 321 through the gas inlet port 3214a, and flows to the position of the particle sensor 325. Furthermore, the piezoelectric actuator 32 continuously drives the gas sucking the gas in the gas inlet path to facilitate the rapid introduction and stable circulation of the external gas, and the external gas passes through the upper portion of the particle sensor 325, at this time, the light beam emitted by the laser element 324 enters the gas inlet groove 3214 through the light transmission window 3214b, the gas inlet groove 3214 passes through the upper portion of the particle sensor 325, when the light beam emitted by the particle sensor 325 irradiates the aerosol in the gas, a scattering phenomenon and a projected light spot are generated, when the particle sensor 325 receives the projected light spot generated by scattering to calculate the information about the particle size and concentration of the aerosol contained in the gas, and the gas above the particle sensor 325 is also continuously driven by the piezoelectric actuator 32 to be introduced into the vent hole 3215a of the gas guide element bearing region 3215 and enter the gas outlet groove 3216. Finally, after the gas enters the gas outlet groove 3216, the piezoelectric actuator 32 continuously transports the gas into the gas outlet groove 3216, so that the gas in the gas outlet groove 3216 is pushed out through the gas outlet port 3216a and the gas outlet frame port 3261b.

In summary, the air purification apparatus provided by the present invention is provided with a gas detection module 3 inside an apparatus main body 1 of the air purification apparatus, when a particle sensor 325 of the gas detection module 3 detects harmful gas in the gas, a blower 4 is activated to prompt the blower 4 to intelligently guide the air into the apparatus main body 1, and suspended particles (PM 2.5) and volatile organic compounds (e.g. VOCS) in the gas are filtered by an activated carbon layer 21a and a zeolite layer 21b in a purification filter material 2, so as to prompt the air to be introduced to form a purified gas to provide the purified gas, thereby reducing the harmful gas breathed in the activity space. Accordingly, the present invention utilizes the activated carbon layer 21a and the zeolite layer 21b in the purification filter material 2 inside the device main body 1 in combination with the air guide 4 to improve the efficiency of the clean gas in the living space. Accordingly, the present invention may be modified by anyone skilled in the art without departing from the scope of the appended claims.

Claims

1. An air purification device, comprising:

a device body having at least one air inlet and at least one air outlet;

a purifying filter material, which is arranged in the device main body and is formed by overlapping at least one active carbon layer and at least one zeolite layer, wherein the active carbon layer filters and adsorbs particles 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 means of the mixing of self pores and hydrophobicity, so that the air is introduced to form a purified gas and the purified gas is discharged from the air outlet;

and the gas detection module is arranged in the device main body and used for detecting and outputting gas quality data of air passing through the air inlet.

2. The air purification device as claimed in claim 1, wherein the purification filter material is formed by stacking the activated carbon layer and the zeolite layers to improve the efficiency of adsorbing and purifying the particles and volatile organic compounds contained in the air.

3. The air purification device as claimed in claim 1, wherein the purification filter material is formed by stacking a plurality of activated carbon layers and the zeolite layers to improve the efficiency of adsorbing and purifying the particles and the volatile organic compounds contained in the air.

4. The air purification device as claimed in claim 1, wherein the purification filter material is formed by stacking a plurality of activated carbon layers and a plurality of zeolite layers to improve the efficiency of adsorbing and purifying the particles and the volatile organic compounds contained in the air.

5. The air cleaning device as claimed in claim 1, comprising a blower disposed inside the device body and adjacent to the air outlet for guiding the air outside the device body to pass through the cleaning filter for filtering and cleaning to form the cleaned air, and for promoting the cleaned air to be discharged from the air outlet.

6. The air purification apparatus as claimed in claim 5, wherein the gas quality data detected by the gas detection module is provided for outputting and providing the air guide machine with an intelligent judgment of whether to start or stop the air guide machine for performing the filtering and purifying operation for guiding the air.

7. The air purification apparatus as claimed in claim 6, wherein the gas quality data of the gas detected by the gas detection module is provided for output and transmission to an external connection device for providing display of the gas quality data of the air and warning notification.

8. The air purification apparatus as claimed in claim 7, wherein the gas detection module comprises a control circuit board, a gas detection body, a microprocessor and a communicator, wherein the gas detection body, the microprocessor and the communicator are packaged on the control circuit board to form a whole and electrically connected, the microprocessor receives the gas quality data detected by the gas detection module for operation and controls the operation of the air guide in the on or off state, and the communicator transmits the gas quality data received by the microprocessor for external communication to the external connection device, so that the external device can obtain the gas quality data for recording and warning notification.

9. The air cleaning apparatus according to claim 8, wherein the gas detection main body comprises:

a base having:

a first surface;

a second surface opposite to the first surface;

a laser setting area formed by hollowing from the first surface to the second surface;

the air inlet groove is formed by sinking from the second surface and is adjacent to the laser setting area, the air inlet groove is provided with an air inlet port, and two side walls penetrate through a light-transmitting window and are communicated with the laser setting area;

the air guide assembly bearing area is formed by sinking from the second surface, is communicated with the air inlet groove, is communicated with a vent hole on the bottom surface, and is provided with a positioning lug at each of the four corners; and

an air outlet groove, which is recessed from the first surface to the bottom surface of the air guide assembly bearing area, is formed by hollowing the area of the first surface, which is not corresponding to the air guide assembly bearing area, from the first surface to the second surface, is communicated with the air vent hole, and is provided with an air outlet port;

the piezoelectric actuator is accommodated in the air guide assembly bearing area;

the driving circuit board is attached to the second surface of the base by the sealing cover;

the laser assembly is positioned on the driving circuit board, is electrically connected with the driving circuit board, is correspondingly accommodated in the laser arrangement area, and emits a light beam path which penetrates through the light-transmitting window and forms an orthogonal direction with the air inlet groove;

a particle sensor, which is positioned on the driving circuit board and electrically connected with the driving circuit board, and is correspondingly accommodated at the orthogonal direction position of the air inlet groove and the light beam path projected by the laser component, so as to detect the particles contained in the air which passes through the air inlet groove and is irradiated by the light beam projected by the laser component; and

the outer cover covers the first surface of the base and is provided with a side plate, the side plate is provided with an air inlet frame port and an air outlet frame port respectively corresponding to the air inlet port and the air outlet port of the base, the air inlet frame port corresponds to the air inlet port of the base, and the air outlet frame port corresponds to the air outlet port of the base;

the outer cover covers the first surface of the base, the driving circuit board covers the second surface of the base, so that the air inlet groove defines an air inlet path, the air outlet groove defines an air outlet path, the piezoelectric actuator accelerates and guides the purified air outside the air inlet port of the base to enter the air inlet path defined by the air inlet groove from the air inlet frame port, the particle concentration of particles contained in the air is detected through the particle sensor, the air is guided through the piezoelectric actuator, the air vents into the air outlet path defined by the air outlet groove, and finally the purified air is discharged from the air outlet port of the base to the air outlet frame port.

10. The air cleaning apparatus according to claim 9, wherein the particulate sensor is PM _2.5 A sensor.

11. The air cleaning apparatus according to claim 9, wherein the piezoelectric actuator comprises:

the air injection hole piece comprises a suspension piece and a hollow hole, the suspension piece can be bent and vibrated, and the hollow hole is formed in the center of the suspension piece;

a cavity frame bearing and superposed on the suspension plate;

an actuating body, which is loaded and stacked on the cavity frame and comprises a piezoelectric carrier plate, an adjusting resonance plate and a piezoelectric plate, wherein the piezoelectric carrier plate is loaded and stacked on the cavity frame, the adjusting resonance plate is loaded and stacked on the piezoelectric carrier plate, and the piezoelectric plate is loaded and stacked on the adjusting resonance plate and used for receiving voltage to drive the piezoelectric carrier plate and the adjusting resonance plate to generate reciprocating bending vibration;

an insulating frame bearing and superposed on the actuating body; and

a conductive frame, which is arranged on the insulating frame in a bearing and stacking manner;

the air injection hole sheet is fixedly arranged on the positioning lug of the air guide assembly bearing area for supporting and positioning, a gap is defined outside the air injection hole sheet to surround the air for air circulation, an airflow chamber is formed between the air injection hole sheet and the bottom of the air guide assembly bearing area, a resonance chamber is formed among the actuating body, the cavity body frame and the suspension sheet, the actuating body is driven to drive the air injection hole sheet to resonate, the suspension sheet of the air injection hole sheet is driven to vibrate and displace in a reciprocating mode, the air is sucked into the airflow chamber through the gap and then discharged, and the air is transmitted and flows.

12. The air purifying apparatus according to claim 9, comprising a volatile organic compound sensor positioned on the driving circuit board and electrically connected to the driving circuit board, accommodated in the air outlet groove, for detecting volatile organic compounds contained in the air guided out of the air outlet path.