阅读说明：本技术 一种车载空气净化器 (Vehicle-mounted air purifier ) 是由 姚秉华 田克聪 马薇 于 2021-08-27 设计创作，主要内容包括：本发明公开的一种车载空气净化器,包括壳体,壳体的上下两端分别开设有出风口和进风口,壳体内位于对应进风口设置有第一气流分配器,第一气流分配器的上方向上依次设置有第一压电触媒滤网、风机、第二气流分配器、第二压电触媒滤网和对应出风口的活性炭滤网。本发明一种车载空气净化器,采用压电触媒技术,利用吸入的空气气流引起的微小振动驱动纳米阵列和纳米片状压电触媒消毒、杀菌、降解车内有毒有害的有机污染物,净化车内空气,保证车内空气质量。结构简单、净化效率高、使用方便、绿色安全。(The invention discloses a vehicle-mounted air purifier which comprises a shell, wherein an air outlet and an air inlet are respectively formed in the upper end and the lower end of the shell, a first airflow distributor is arranged in the shell and corresponds to the air inlet, and a first piezoelectric catalyst filter screen, a fan, a second airflow distributor, a second piezoelectric catalyst filter screen and an activated carbon filter screen corresponding to the air outlet are sequentially arranged above the first airflow distributor. The invention relates to a vehicle-mounted air purifier, which adopts a piezoelectric catalyst technology, utilizes micro-vibration caused by sucked air flow to drive a nano array and a nano flaky piezoelectric catalyst to disinfect, sterilize and degrade toxic and harmful organic pollutants in a vehicle, purifies air in the vehicle and ensures the quality of the air in the vehicle. Simple structure, high purification efficiency, convenient use, greenness and safety.)

1. The utility model provides a vehicle-mounted air purifier, its characterized in that, includes casing (1), and air outlet (2) and air intake (3) have been seted up respectively to the upper and lower both ends of casing (1), is located in casing (1) and is provided with first air current distributor (4) corresponding air intake (3), and the top of first air current distributor (4) is upwards set gradually first piezoelectricity catalyst filter screen (5), fan (6), second air current distributor (7), second piezoelectricity catalyst filter screen (8) and activated carbon filter screen (9) that correspond air outlet (2).

2. The vehicle-mounted air purifier of claim 1, wherein the first piezo-electric catalyst filter (5) comprises a first double-heterojunction piezo-electric catalyst composite membrane and stainless steel wires fixed at the upper end and the lower end of the first double-heterojunction piezo-electric catalyst composite membrane, and the first double-heterojunction piezo-electric catalyst composite membrane adopts porous array ZnO nano-rods and single-layer MoS₂ZnO/PVDF/MoS compounded with PVDF₂。

3. The vehicle air cleaner of claim 1, wherein the second piezo-electric catalyst filter (8) includes a second double hetero-junction piezo-electric catalyst composite membrane and stainless steel plates fixed to upper and lower ends thereofThe steel wire mesh and the second double-heterojunction piezoelectric catalyst composite film are made of MoSe assembled by nano sheets₂Microsphere, monolayer MoS₂MoSe compounded with graphene₂graphene/MoS₂。

4. The vehicle-mounted air purifier as claimed in claim 1, wherein the first air distributor (4) and the second air distributor (7) are identical in structure and comprise a distribution disc (10), and a plurality of distribution holes (11) are formed in the distribution disc (10) at uniform intervals.

5. The vehicle-mounted air purifier as recited in claim 1, wherein the housing (1) comprises a cylinder (12) and an upper cover (13) sealed at the upper end thereof, the air outlet (2) is provided on the upper cover (13), the air inlet (3) is provided on the sidewall of the lower portion of the cylinder (12), and a base (14) is fixed below the bottom end of the cylinder (12).

6. The vehicle-mounted air purifier as recited in claim 5, wherein the fan (6) is a DC 12V fan, and the fan (6) is electrically connected with a jack socket (15) located on the side wall of the cylinder (12).

7. A vehicle air cleaner according to claim 1 or 5, wherein the air inlet (3) is externally covered with a plastic grill (16).

Technical Field

The invention belongs to the technical field of air purification equipment, and particularly relates to a vehicle-mounted air purifier.

Background

With the progress and development of human society, automobiles are becoming more and more popular as transportation tools. Because the space in the automobile is narrow and small, after the automobile runs for a period of time, the windows of the automobile need to be opened for ventilation so as to ensure that the air in the automobile is fresh. In addition, with the rapid development of the urban industrialization process, the problems of dust pollution, industrial pollution, motor vehicle exhaust pollution, indoor decoration pollution, automobile interior pollution and the like are increasingly severe no matter in cities or rural areas, the life and the body health of people are seriously affected, and the influence of polluted air on drivers and passengers is particularly prominent.

Disclosure of Invention

The invention aims to provide a vehicle-mounted air purifier which can ensure fresh air in an automobile without opening windows for ventilation.

The technical scheme adopted by the invention is as follows: the utility model provides a vehicle-mounted air purifier, includes the casing, and air outlet and air intake have been seted up respectively to the upper and lower both ends of casing, lie in the casing and be provided with first air flow distributor corresponding to the air intake, upwards set gradually first piezoelectricity catalyst filter screen, fan, second air flow distributor, second piezoelectricity catalyst filter screen and the active carbon filter screen that corresponds the air outlet in the top of first air flow distributor.

The present invention is also characterized in that,

the first piezoelectric catalyst filter screen comprises a first double-heterojunction piezoelectric catalyst composite membrane and stainless steel wire meshes fixed at the upper end and the lower end of the first double-heterojunction piezoelectric catalyst composite membrane, and the first double-heterojunction piezoelectric catalyst composite membrane adopts porous array ZnO nano-rods and single-layer MoS₂ZnO/PVDF/MoS compounded with PVDF₂。

The second piezoelectric catalyst filter screen comprises a second double-heterojunction piezoelectric catalyst composite membrane and stainless steel wire meshes fixed at the upper end and the lower end of the second double-heterojunction piezoelectric catalyst composite membrane, and the second double-heterojunction piezoelectric catalyst composite membrane adopts MoSe assembled by nano sheets₂Microsphere, monolayer MoS₂MoSe compounded with graphene₂graphene/MoS₂。

The first air flow distributor and the second air flow distributor are identical in structure and respectively comprise a distribution disc, and a plurality of distribution holes are uniformly arranged on the distribution disc at intervals.

The shell comprises a barrel body and an upper cover sealed at the upper end of the barrel body, the air outlet is arranged on the upper cover, the air inlet is arranged on the side wall of the lower portion of the barrel body, and a base is fixed below the bottom end of the barrel body.

The fan adopts the direct current 12V fan, and the fan electricity is connected with the jack seat that is located the barrel lateral wall.

The air inlet is externally covered with a plastic grid.

The invention has the beneficial effects that: the invention relates to a vehicle-mounted air purifier, which adopts a piezoelectric catalyst technology, utilizes micro-vibration caused by sucked air flow to drive a nano array and a nano flaky piezoelectric catalyst to disinfect, sterilize and degrade toxic and harmful organic pollutants in a vehicle, purifies air in the vehicle and ensures the quality of the air in the vehicle. Simple structure, high purification efficiency, convenient use, greenness and safety.

Drawings

FIG. 1 is a schematic view of a vehicle air purifier according to the present invention;

FIG. 2 is a schematic view showing the construction of a first air flow distributor and a second air flow distributor in a vehicle air cleaner according to the present invention;

FIG. 3 is a diagram showing the effect of the vehicle air purifier on formaldehyde degradation.

In the figure, 1, a shell, 2, an air outlet, 3, an air inlet, 4, a first air flow distributor, 5, a first piezoelectric catalyst filter screen, 6, a fan, 7, a second air flow distributor, 8, a second piezoelectric catalyst filter screen, 9, an activated carbon filter screen, 10, a distribution plate, 11, a distribution hole, 12, a cylinder, 13, an upper cover, 14, a base, 15, a jack seat and 16, a plastic grid are arranged.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention provides a vehicle-mounted air purifier, as shown in figure 1, a shell 1 comprises a cylinder body 12 and an upper cover 13 sealed at the upper end of the cylinder body, an air outlet 2 is arranged on the upper cover 13, an air inlet 3 is arranged on the side wall of the lower part of the cylinder body 12, a plastic grid 16 is arranged outside the air inlet 3 to prevent foreign matters from entering, and a base 14 is fixed below the bottom end of the cylinder body 12. The shell is characterized in that a first air distributor 4 is arranged in the shell 1 and corresponds to the air inlet 3, a first piezoelectric catalyst filter screen 5, a fan 6, a second air distributor 7, a second piezoelectric catalyst filter screen 8 and an activated carbon filter screen 9 corresponding to the air outlet 2 are sequentially arranged above the first air distributor 4, the fan 6 is a direct-current 12V fan, and the fan 6 is electrically connected with a jack seat 15 located on the side wall of the cylinder 12.

Wherein, the first piezoelectric catalyst filter screen 5 comprises a first double-heterojunction piezoelectric catalyst composite membrane and stainless steel wire meshes fixed at the upper and lower ends thereof, and the double stainless steel wiresThe net layer structure effectively increases the stability of the composite film, and no gap is left between the stainless steel wire mesh and the composite film. The first double-heterojunction piezoelectric catalyst composite membrane adopts porous array ZnO nano-rods and single-layer MoS₂ZnO/PVDF/MoS compounded with PVDF₂. The second piezoelectric catalyst filter screen 8 comprises a second double-heterojunction piezoelectric catalyst composite membrane and stainless steel wire meshes fixed at the upper and lower ends of the second double-heterojunction piezoelectric catalyst composite membrane, wherein the second double-heterojunction piezoelectric catalyst composite membrane is MoSe assembled by nano sheets₂Microsphere, monolayer MoS₂MoSe compounded with graphene₂graphene/MoS₂。

The piezoelectric materials adopted by the first double-heterojunction piezoelectric catalyst composite membrane and the second double-heterojunction piezoelectric catalyst composite membrane are materials with non-centrosymmetric crystal structures, and under the action of mechanical deformation or an external force field, positive charge centers and negative charge centers of the first double-heterojunction piezoelectric catalyst composite membrane and the second double-heterojunction piezoelectric catalyst composite membrane can generate relative displacement, so that piezoelectric potential is generated. Under the action of piezoelectric potential, a built-in electric field is generated, so that electrons and holes in the piezoelectric semiconductor are subjected to relative displacement, the electrons are gathered in a conduction band of the semiconductor, and the holes are gathered in a valence band of the semiconductor; electrons on the conduction band have strong reducibility, and O adsorbed on the surface of the catalyst₂Reduced to superoxide anion radical O₂ ^-And then with H⁺Acting to produce H₂O₂Or by reaction of O₂Direct reduction to H₂O₂Then generates more active hydroxyl free radical OH which can oxidize and decompose various organic pollutants into CO₂And H₂O; the cavity on the valence band has strong oxidizability, and can directly oxidize the organic pollutants adsorbed on the surface of the catalyst, thereby achieving the purpose of purifying air.

In the first double-heterojunction piezoelectric catalyst composite membrane, ZnO and MoS₂All are piezoelectric semiconductors, PVDF is a piezoelectric polymer, and can generate piezoelectric effect under the condition of external field strain, ZnO/PVDF and MoS₂The structure of PVDF double heterojunction makes the piezoelectric effect more obvious. The valence band potential of the composite membrane can reach +2.9V (vs NHE), the conduction band potential reaches-0.3V (vs NHE), and the open circuit voltage reaches more than 3V. When the purifier is in operation, the disturbance of the air flow causes pressureFiber vibration in the electrocatalyst membrane, including nanorod ZnO swing on fiber, MoS₂The nanosheets on the surface of the microspheres vibrate, thereby generating a built-in electric field. Under the drive of the built-in electric field, the electrons and the holes move in opposite directions, and the gaseous organic pollutants in the air, including formaldehyde, organic solvents, CO and the like, are catalytically decomposed.

In the second double-heterojunction piezoelectric catalyst composite film, nano MoSe is obtained by electrostatic spinning₂、MoS₂The piezoelectric semiconductor microspheres are loaded on a graphene carrier to form a Z-shaped double-heterojunction composite fiber film MoSe₂graphene/MoS₂. The valence band potential of the composite membrane can reach +1.7V (vs NHE), the conduction band potential reaches-1.2V (vs NHE), and the open circuit voltage reaches more than 2.9V. When the purifier is in operation, the disturbance of the air flow will cause the fibers in the piezoelectric catalyst film to vibrate, including the nano-MoSe on the fibers₂、MoS₂The nanosheets on the surface of the microspheres vibrate, thereby generating a built-in electric field. Under the drive of a built-in electric field, electrons and holes move in opposite directions, and gaseous organic pollutants which are remained after primary purification by the first double-heterojunction piezoelectric catalyst composite membrane are catalytically decomposed, wherein the gaseous organic pollutants comprise formaldehyde, an organic solvent, CO, a primary catalytic degradation intermediate product and the like.

As shown in figure 2, the first air flow distributor 4 and the second air flow distributor 7 are identical in structure and respectively comprise a distribution plate 10, the distribution plate is made of a plastic disc with the diameter of 64mm and the thickness of 3mm, a plurality of distribution holes 11 with the diameter of 3mm are uniformly arranged on the distribution plate 10 within the range of 60mm in diameter at intervals, and the distance between the distribution holes 11 is 10 mm. The first air distributor 4 is located below the first piezo-electric catalyst filter 5 at a distance of 10mm, and the second air distributor 7 is located below the second piezo-electric catalyst filter 8 at a distance of 10 mm.

During operation, connect jack seat 15 and on-vehicle 12V DC power supply through the power and start fan 6, then the air in the car is inhaled in barrel 12 from air intake 3 of casing 1, distribute through first air flow distributor 4 earlier the dispersion get into in first piezoelectricity catalyst filter screen 5, guaranteed rather than abundant contact, pollutant in the air gets into in second piezoelectricity catalyst filter screen 8 after fully decomposing after 7 distribute through second air flow distributor, further guaranteed the complete decomposition of pollutant, later get into active carbon filter screen 9 and adsorb peculiar smell, residual particulate matter, the clean air that purifies after the completion is discharged by air outlet 2 on the upper cover 13.

The application effect of the invention is shown in figure 3, and the formaldehyde degradation effect is shown in figure, and the method comprises the following specific steps: in a 26X 33X 35 closed vessel, 10mL of a formaldehyde solution was placed, and the mixture was left to stand for 10 min. Then taking out the formaldehyde solution, measuring the concentration of the formaldehyde solution as C0, starting the purifier, sampling and analyzing at certain time intervals, and then drawing a relation curve of Ct/C0 and purification time (min).

Through the mode, the vehicle-mounted air purifier adopts the piezoelectric catalyst technology, and utilizes the micro-vibration caused by the sucked air flow to drive the nano-array and the nano-sheet piezoelectric catalyst to disinfect, sterilize and degrade toxic and harmful organic pollutants in a vehicle, so that the air in the vehicle is purified, and the quality of the air in the vehicle is ensured. Simple structure, high purification efficiency, convenient use, greenness and safety.