CN214057177U

CN214057177U - Vehicle-mounted air purification device

Info

Publication number: CN214057177U
Application number: CN202022384431.6U
Authority: CN
Inventors: 汪琦; 赵杰; 张皓; 孙鹏; 骆道亨
Original assignee: Guangdong Yuenengjing Environmental Protection Technology Co ltd; South China University of Technology SCUT
Current assignee: Zhongke Yuenengjing Shandong New Material Co ltd; South China University of Technology SCUT
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-08-27
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses an on-vehicle air purification device, include: the air purification module is arranged in the shell and comprises a photocatalysis unit used for removing volatile organic pollutants in the vehicle; and the airflow driving unit is positioned at the rear end of the airflow of the air purification module and used for generating circulating airflow in the vehicle, and the airflow driving unit converges the air filtered by the air purification module and discharges the air out of the air outlet along the vertical direction. The utility model discloses a multiple Volatile Organic Compounds (VOCs) can be got rid of to on-vehicle air purification device such as toluene, xylol, benzene, formaldehyde, acetaldehyde and homologue etc. also can get rid of multiple sulphur, nitrogen containing gas such as sulfur dioxide, hydrogen sulfide, ammonia etc. can also play the effect of sterilization.

Description

Vehicle-mounted air purification device

Technical Field

The utility model belongs to the technical field of cleaning device, in particular to air purifier who uses in car.

Background

The whole space in the vehicle is narrow, and the turbidity of the air in the vehicle is very unfavorable for the health of a driver and passengers. The main hazards in the air in a vehicle include: volatile Organic Compounds (VOCs), formaldehyde, PM 2.5. When the concentration of Volatile Organic Compounds (VOCs) is too high, acute poisoning is easily caused, and headache, dizziness, cough, nausea, vomiting or a drunk shape can appear in a mild case; serious patients can have hepatotoxicity and even coma, and some of them can be life-threatening. In vehicles polluted by VOCs for a long time, chronic poisoning can be caused, the liver and the nervous system are damaged, and general weakness, sleepiness, skin itch and the like are caused. It is well known that formaldehyde and pm2.5 can cause considerable harm to human bodies in narrow and relatively closed spaces. However, the existing in-vehicle VOCs pollution is generally discharged by means of window opening ventilation or adsorbed by activated carbon, but the effect of removing the pollutants is little.

In recent years, the photocatalytic purification technology directly uses oxygen in air as an oxidant, has the advantages of mild reaction conditions, good stability of a catalyst, thorough purification effect and the like, and is an environmental pollution treatment technology with good application prospect. Titanium dioxide (TiO)₂) Has good light corrosion resistance and catalytic activity, stable performance, low price, easy obtaining, no toxicity and no harm, and is the best photo-catalyst recognized at present.

The titanium dioxide photocatalyst is usually used in a powder shape, and in practical application, the titanium dioxide needs to be fixed on a carrier, so that the defects of the suspension phase titanium dioxide photocatalyst can be overcome. At present, the carrier materials mainly comprise glass carriers such as glass sheets, glass fiber nets and the like, ceramic carriers such as alumina ceramic sheets, honeycomb ceramic columns, foamed ceramics and the like, and metal carriers such as titanium sheets, stainless steel plates, foamed nickel and the like. The common supporting method is a titanium glue supporting method or a method of adding titanium oxide crystal grains into a binding agent to support, and then sintering at high temperature to prepare the supported photocatalyst.

In order to improve the air quality in the environment inside the vehicle, a vehicle-mounted air purification device is needed, especially a vehicle-mounted air purification device manufactured by utilizing the principle of photocatalytic purification.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an on-vehicle air purification device can effectively get rid of all kinds of pollutants that the car internal environment produced through the photocatalysis unit, including but not limited to Volatile Organic Compounds (VOCs), formaldehyde and PM 2.5.

In order to achieve the above object, the utility model provides an on-vehicle air purification device, include: the air purification module is arranged in the shell and comprises a photocatalysis unit used for removing volatile organic pollutants in the vehicle; and the airflow driving unit is positioned at the rear end of the airflow of the air purification module and used for generating circulating airflow in the vehicle, and the airflow driving unit converges the air filtered by the air purification module and discharges the air out of the air outlet along the vertical direction.

Further, in the above technical solution, the photocatalytic unit includes: a photocatalytic plate which is a foamed ceramic plate loaded with a photocatalytic active component; a plurality of ultraviolet LED light sources, its evenly distributed is on the bars of grid lamp plate, this grid lamp plate with photocatalysis board parallel arrangement just separates one section distance for shine photocatalysis board.

Furthermore, among the above-mentioned technical scheme, the air current drive unit can be a centrifugal fan, and this centrifugal fan's air current front end sets up the wind channel that converges, and the air current rear end sets up the air-out wind channel.

Further, among the above-mentioned technical scheme, the wind channel surface of converging can be designed for the convex cambered surface of orientation centrifugal fan, and this cambered surface makes centrifugal fan's air intake and photocatalytic unit interval one section distance.

Further, among the above-mentioned technical scheme, the bore of air-out wind channel can be the gradual change form that first little then big.

Furthermore, in the above technical solution, the usable area of the photocatalytic plate may be 145 × 115mm²The thickness may be 10 mm; the spacing distance between the grating lamp panel and the photocatalytic plate can be 14 mm.

Further, in the above technical solution, the air purification module may further include: coarse screens and HEPA filters; the coarse filter screen is arranged at an air inlet of the device, and the HEPA filter is positioned at the rear end of the airflow of the coarse filter screen and is arranged close to the coarse filter screen.

Further, in the technical scheme, the aperture ratio of the foamed ceramic plate is 70-90%, and the pore density is 8-60 ppi.

Further, in the above technical scheme, the ultraviolet LED light source may adopt a UVA band LED light source.

Furthermore, among the above-mentioned technical scheme, the casing upper surface sets up can dismantle the apron, and the coarse strainer can bond on this can dismantle the apron.

Furthermore, in the above technical scheme, the air outlets can be two and are respectively arranged on two side surfaces of the shell.

Further, in the above technical scheme, the HEPA filter is mounted on a first support frame, and the grille lamp panel and the foam ceramic plate are mounted on a second support frame; the side section of the second support frame is T-shaped; the first support frame is nested in the second support frame.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the photocatalytic unit in the air purification module adopts a vertical air inlet mode, so that the air can be filtered and purified more fully;

2) the photocatalysis unit can remove various Volatile Organic Compounds (VOCs) such as toluene, xylene, benzene, formaldehyde, acetaldehyde and homologues thereof, can also remove various gases containing sulfur and nitrogen such as sulfur dioxide, hydrogen sulfide, ammonia and the like, and can also play a role in sterilization;

3) the centrifugal fan is selected to enable the installation to be simpler and more convenient, the noise is low, and the air exchange amount is large;

4) the gradual change shape of the air duct caliber at the air outlet which is firstly contracted and then expanded is beneficial to reducing noise;

5) the upper surface of the vehicle-mounted air purification device is provided with a detachable cover plate, and the coarse strainer is bonded on the detachable cover plate, so that the vehicle-mounted air purification device is convenient to detach and clean; the HEPA filter can be more conveniently replaced by the detachable cover plate;

6) the vehicle-mounted air purification device simultaneously uses the coarse filter screen, the HEPA filter and the photocatalytic unit, so that the air can be purified more fully and thoroughly;

7) the HEPA filter support frame is nested in the grating lamp panel and the foam ceramic plate support frame, and has the functions of supporting the HEPA filter and limiting the grating lamp panel, so that the internal space can be effectively saved;

8) the air intake that makes centrifugal fan pulls open a segment distance with the photocatalysis unit for the bellied cambered surface downwards converges wind channel surface, is favorable to the air current evenly to pass through the photocatalysis unit, increases the air area of crossing of photocatalysis unit, improves the utilization ratio of photocatalysis unit.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means more comprehensible, and to make the above and other objects, technical features, and advantages of the present invention easier to understand, one or more preferred embodiments are listed below, and the following detailed description is given with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of the vehicle-mounted air purification device of the present invention.

Fig. 2 is a cross-sectional view of the utility model of a vehicle-mounted air purification device.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a perspective view of the airflow driving unit of the present invention (a centrifugal fan can be shown partially cut away).

Fig. 5 is a sectional view of the airflow driving unit of the present invention.

Fig. 6 is a cross-sectional view of the air outlet duct of the present invention.

Fig. 7 is a perspective view of the air purification module of the present invention.

Fig. 8 is a cross-sectional view of an air purification module in the present invention.

Fig. 9 is a schematic view of the flow of internal gas in the present invention.

Fig. 10 is a schematic view of the flow direction of the outside air in the present invention.

Description of the main reference numerals:

the solar cell panel comprises a shell, a detachable cover plate, 11-a honeycomb type air outlet, 200-a first support frame, 201-a second support frame, 21-a coarse filter screen, 22-a HEPA filter, 230-a grille lamp panel, 231-a foam ceramic plate, 30-a confluence air channel, 31-a centrifugal fan, 32-an air outlet channel and 2300-an ultraviolet LED light source.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Spatially relative terms, such as "below," "lower," "upper," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The article may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

In this document, the terms "first", "second", etc. are used to distinguish two different elements or portions, and are not used to define a particular position or relative relationship. In other words, the terms "first," "second," and the like may also be interchanged with one another in some embodiments.

As shown in fig. 1, 2 and 3, the present invention provides a vehicle-mounted air purification device, which comprises a housing 1, an air purification module and an airflow driving unit. The housing 1 is used for assembling various parts and forming an air duct, and air circulation is realized through an air inlet and an air outlet of the device. The air purification module includes a coarse filter 21, a HEPA filter 22, and a photocatalytic unit for removing volatile organic pollutants in the vehicle. The airflow driving unit can realize airflow circulation and comprises a centrifugal fan 31, a converging air duct 30 and an air outlet duct 32 in the airflow direction, the converging air duct 30 converges the filtered airflow above the centrifugal fan, and the airflow driving unit converges the filtered air of the air purification module and discharges the converged air out of the air outlet along the vertical direction. The air cleaning module and the airflow driving unit are both assembled in the housing 1.

As shown in fig. 2 and 9, the air in the vehicle is driven by the airflow driving unit, so that the airflow enters from the air inlet on the upper surface of the housing 1, passes through the coarse filter 21, the HEPA filter 22 and the photocatalytic unit in sequence, and the filtered air passes through the air outlet duct 32 and re-enters the environment in the vehicle from the honeycomb air outlet 11, and is circulated in this way, so as to remove volatile pollutants in the vehicle, such as various Volatile Organic Compounds (VOCs), including but not limited to toluene, xylene, benzene, formaldehyde, acetaldehyde and homologues thereof, and also remove various sulfur and nitrogen-containing gases, such as sulfur dioxide, hydrogen sulfide, ammonia, and the like, and also play a role in sterilization and disinfection.

As further shown in fig. 2, 4 and 5, the surface of the collecting duct 30 is a cambered surface protruding towards the centrifugal fan 31, and the cambered surface enables the air inlet of the centrifugal fan to be spaced apart from the photocatalytic unit by a distance, i.e. to be pulled away from the photocatalytic unit by a distance, which is preferably, but not limited to, 6 mm. The distance is favorable for airflow to uniformly pass through the photocatalytic unit, the air passing area of the photocatalytic unit is increased, and the utilization rate of the photocatalytic unit is improved.

As further shown in fig. 3, a detachable cover plate 10 is provided on the upper surface of the housing 1. The coarse strainer 21 is bonded on the detachable cover plate 10, so that the detachable cover plate is convenient to detach and clean. Further, the pore density of the coarse filter 21 may be set to about 40 ppi. Meanwhile, the arrangement of the detachable cover plate can facilitate the replacement of the HEPA filter 22.

As further shown in fig. 2 to 6, under the driving action of the centrifugal fan 31, the air in the vehicle enters the filtering part of the air purification module from the air inlet (the filtering part sequentially comprises a coarse filter 21, a HEPA filter 22 and a photocatalytic unit along the air flow direction), the coarse filter 21 is installed at the air inlet of the device, and the HEPA filter 22 is located at the rear end of the air flow of the coarse filter 21 and is tightly attached to the coarse filter 22. The centrifugal fan 31 is located at the lower end of the airflow direction of the photocatalytic unit (i.e., the rear end of the airflow). The centrifugal fan 31 is communicated with the honeycomb type air outlet 11 through the air outlet duct 32, the caliber of the air outlet duct 32 is firstly contracted and then expanded, and the design of the gradually-changed shape can effectively reduce noise and reduce wind speed and wind sensation. Furthermore, the inner wall of the air duct at the air outlet 11 can be attached with sound-absorbing cotton.

As further shown in fig. 7 and 8, the HEPA filter 22 is mounted on the first support frame 200, and the grille lamp panel 230 and the foam ceramic plate 231 are mounted on the second support frame 201; the second support frame 201 has a substantially T-shaped cross section. The first support frame 200 is nested in the second support frame 201. First support frame 200 nests and has the HEPA filter 22 of bearing weight of and give the spacing function of grid lamp plate 230 simultaneously in second support frame 201, more helps sparingly air purification module's inner space.

As further shown in fig. 7 and 8, the photocatalytic unit further includes a photocatalytic plate and a grille lamp plate 230, and the photocatalytic plate is a foamed ceramic plate 231 loaded with a photocatalytic active component. Preferably, but not limitatively, the open porosity of the foamed ceramic plate 231 is 70 to 90%, and the pore density is 8 to 60 ppi. Evenly distributed has a plurality of ultraviolet LED light sources 2300 on the grating of grid lamp plate 230, and this grid lamp plate 230 and photocatalysis board parallel arrangement just keep apart a section distance for shine photocatalysis board. Preferably, but not limitatively, to meet the requirement of air purification in the vehicle, the use area of the photocatalytic plate is set to 145 x 115mm²The thickness is 10 mm. Preferably, but not limitatively, for better illumination effect, the space between the grille lamp panel 230 and the photocatalytic plate is 14 mm. The photocatalytic plate in the photocatalytic unit, i.e. the photocatalytic foam ceramic plate 231 adopts a foam alumina-based carrier as an open-cell foam structure, and the photocatalyst is a foam alumina-based carrier loaded with TiO₂A photocatalyst. In the photocatalyst, TiO₂The crystal grains are embedded and dispersed on the outer surface of the photocatalyst, and TiO on the outer surface of the photocatalyst₂TiO of 5 to 50 μm particle size in the crystal grain₂The crystal grains account for more than 70 percent. In one or more exemplary embodiments of the present invention, the ultraviolet LED light source 2300 is preferably a point light source. Illustratively, the ultraviolet LED light source 2300 is preferably in the UVA band, and more preferably, the wavelength of the ultraviolet LED light source is 365 nm. By adopting the ultraviolet LED light source with the UVA wave band, the photoelectric efficiency can be improved, and the energy loss can be reduced. The wavelength of ultraviolet light emitted by the ultraviolet LED light source is 280-390 nm, and the ultraviolet light can be single wavelength or mixed wavelength.

As further shown in fig. 9 and 10, after air enters from the air inlet by being driven by the centrifugal fan 31, the air passes through the coarse filter 21, the HEPA filter 22 and the photocatalytic foam ceramic plate 231 irradiated by the LED light source 2300 on the grille lamp panel 230 in sequence to be fully filtered and purified, during filtering, the air inlet direction is perpendicular to the photocatalytic unit, and the filtered air flow is discharged vertically relative to the air inlet, so that the air circulation purification in the vehicle is realized.

The utility model discloses a photocatalysis unit adopts perpendicular air inletIn this way, the air can be filtered and purified more fully. The photocatalytic unit is arranged in a vehicle and can be used for 3m³And carrying out efficient circulating purification treatment on the environment in the vehicle. The utility model relates to an on-vehicle air purification device can be used to purify the volatile organic pollutant, haze pollutant etc. in the enclosure space such as the car, has good photocatalytic degradation performance and good application prospect.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.

Claims

1. An on-vehicle air purification device, characterized by comprising:

the air purification module is arranged in the shell and comprises a photocatalysis unit used for removing volatile organic pollutants in the vehicle; the photocatalytic unit includes: the LED light source comprises a photocatalytic plate and a plurality of ultraviolet LED light sources, wherein the photocatalytic plate is a foamed ceramic plate loaded with photocatalytic active components; the ultraviolet LED light sources are uniformly distributed on grid bars of a grid lamp panel, and the grid lamp panel and the photocatalytic plate are arranged in parallel and are spaced at a certain distance and used for irradiating the photocatalytic plate;

and the airflow driving unit is positioned at the rear end of the airflow of the air purification module and used for generating circulating airflow in the vehicle, and the airflow driving unit converges the air filtered by the air purification module and discharges the converged air out of the air outlet along the vertical direction.

2. The vehicle-mounted air purification device according to claim 1, wherein the airflow driving unit is a centrifugal fan, a converging air duct is arranged at the airflow front end of the centrifugal fan, and an outlet air duct is arranged at the airflow rear end of the centrifugal fan.

3. The vehicle-mounted air purification device according to claim 2, wherein the surface of the confluence air channel is a cambered surface protruding towards the centrifugal fan, and the cambered surface enables an air inlet of the centrifugal fan to be spaced from the photocatalytic unit by a certain distance.

4. The vehicle-mounted air purification device according to claim 2, wherein the aperture of the air outlet duct is gradually changed from small to large.

5. The vehicle air purification device of claim 1, wherein the photocatalytic plate has a usable area of 145 x 115mm²The thickness is 10 mm; the interval distance of grid lamp plate and photocatalysis board is 14 mm.

6. The vehicle-mounted air purification device according to claim 1, wherein the air purification module further comprises: coarse screens and HEPA filters; the coarse filter screen is arranged at an air inlet of the device, and the HEPA filter is positioned at the rear end of the airflow of the coarse filter screen and is arranged close to the coarse filter screen.

7. The vehicle-mounted air purification device according to claim 1, wherein the foamed ceramic plate has an open cell content of 70-90% and a cell density of 8-60 ppi.

8. The vehicle-mounted air purification device of claim 1, wherein the ultraviolet LED light source is a UVA band LED light source.

9. The vehicle-mounted air purification device according to claim 6, wherein a detachable cover plate is provided on the upper surface of the housing, and the coarse filter is bonded to the detachable cover plate.

10. The vehicle-mounted air purification device according to claim 1, wherein the number of the air outlets is two, and the air outlets are respectively arranged on two side surfaces of the shell.

11. The vehicle-mounted air purification device according to claim 6, wherein the HEPA filter is mounted on a first support frame, and the grille lamp panel and the foam ceramic plate are mounted on a second support frame; the side section of the second support frame is T-shaped; the first support frame is nested in the second support frame.