CN111359437A - Purification module and purification system - Google Patents

Abstract

The purification module comprises a porous structural member and a plurality of purification modules, wherein the porous structural member is used for providing a surface of a porous structure, at least part of the surface has a photocatalysis function area, the porous structural member is provided with a hole I with the average pore diameter of more than or equal to 0.1mm and a hole II with the average pore diameter of less than 0.1mm, and the hole I and/or the hole II are through holes or counter bores; and the light source component is provided with a luminous body and is used for providing irradiation light to the photocatalytic functional area in a working state. This scheme provides great reaction purification area for the photocatalytic reaction of environmental purification in-process through the porous structure's that provides purification module to catalytic reaction's efficiency and effect have been promoted effectively.

Description

Purification module and purification system

Technical Field

The invention belongs to the technical field of environmental purification and treatment, and particularly relates to a purification module and a purification system.

Background

The photocatalyst is a substance which does not change under the irradiation of light and can promote chemical reaction, and the photocatalyst utilizes the energy required by the chemical reaction converted from the light energy existing in nature to generate the catalytic action, so that the surrounding oxygen and water molecules are excited into free negative ions with extremely high oxidizing power. Almost all organic substances and partial inorganic substances harmful to human bodies and environment can be decomposed, not only can the reaction be accelerated, but also the natural definition can be applied, and the resource waste and the additional pollution formation are not caused. The most representative example is "photosynthesis" of plants, which absorbs carbon dioxide and converts light energy into oxygen and organic substances.

The photocatalytic reaction is widely used in the field of environmental purification for the following characteristics. Antibacterial property, killing Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, virus, etc. Air purification, namely decomposing organic compounds and toxic substances in air, such as benzene, formaldehyde, ammonia, TVOC and the like. Deodorizing, namely removing the stink of cigarette, garbage, life stink and the like. Preventing mildew and algae, preventing mildew and algae generation, and preventing scale adhesion. Antifouling and self-cleaning, namely decomposing oil stains and self-cleaning.

In the existing photocatalytic environment purification equipment, a mesh carrier is generally adopted, the structure is limited, the utilization efficiency of space is low, and the purification efficiency of the catalytic carrier in unit volume is low, so that related products generally have larger volume, and the space under the indoor environment occupies larger space, so that the effective utilization rate of the indoor space is low.

Disclosure of Invention

The invention aims to provide a purification module and a purification system, which provide a larger reaction purification area for photocatalytic reaction in the environment purification process through the provided purification module with a porous structure, thereby effectively improving the efficiency and effect of catalytic reaction, and effectively killing harmful microorganisms such as viruses and germs in the environment while eliminating toxic and harmful substances in the environment.

The invention discloses a purification module (the module is defined as the general name or the outline of a certain functional structure in equipment), which comprises:

the porous structure is used for providing the surface of a porous structure, at least part of the surface has a photocatalytic function area, the porous structure is provided with a hole I with the average pore diameter of more than or equal to 0.1mm and/or a hole II with the average pore diameter of less than 0.1mm, and the hole I and/or the hole II are through holes or counter bores (for example, the main body of the porous structure can be a screen-shaped structure formed by ribs, the hole I with the larger pore diameter is a hole formed on the porous structure and can be in a through hole shape; certainly, in order to obtain further enhanced catalytic effect, the ribs can also be provided with the hole II with the smaller pore diameter, the hole comprises a hole which is formed by sinking towards the inner side of the rib in the traditional sense and can also comprise a gap structure formed by protruding structures on the surface of the rib; the hole I can exist independently in the scheme and can also coexist with;

and the light source component is provided with a luminous body and is used for providing irradiation light to the photocatalytic functional area in a working state. The porous structure may be an integral structure, i.e. a porous member having catalytic ability, for example, a porous ceramic material is formed by sintering a material having catalytic ability, and the raw material selection range of the ceramic material includes silicon nitride, silicon carbide, aluminum oxide, magnesium oxide, calcium oxide, silicon oxide, boron nitride, tungsten carbide, tungsten oxide, etc., as required, so that an activated photocatalytic functional region capable of catalytic reaction can be formed on the surface of the porous ceramic material. It is also possible to form a composite structure, i.e. in the form of a "support + catalyst layer", by loading the surface of the support of the porous structure with an active catalyst material, which forms a photocatalytic function on the surface of the porous structure in the form of an additional catalyst layer. The photocatalytic functional region may be formed on all surfaces of the porous structure, or may be formed by covering or activating a part of the surface, such as a highly efficient response region, a highly active region, or the like. The porous structure is provided with a proper surface area by the holes I or the holes II or both, and the implementation process of the scheme mainly depends on the effective area exposed to light, so that the surface area required by the scheme is generally provided by the holes I or the combination of the holes I and the holes II; the requirement for the holes ii is not purely microporous but rather shallow straight holes or other types of curved holes of lesser curvature which are substantially effectively exposed to pressure or which are effectively associated with the ambient atmosphere (as is also feasible for micropores which meet the requirements for effective flow of air into contact during spatial decontamination), also in this case providing an effective surface area there. The higher the effective surface area of the porous structure in general, the higher the catalytic efficiency per unit volume of the porous structure under specific catalytic conditions, and the surface area requirements can be considered depending on many factors such as the application environment of the product, the catalytically active material and the cost.

The invention discloses an improvement of a purification module, and a porous structural member is formed with a hollow structure with a cavity. The hollow structure is arranged, so that the reaction area can be effectively increased by utilizing the characteristics of light in the propagation process, such as diffuse reflection and the like.

The invention discloses an improvement of a purification module, wherein the porous structural member and/or the hollow structure has an axisymmetric structure. By adopting the scheme, the stability of the symmetrical structure is further considered while the light propagation path is considered to improve the catalytic efficiency.

The invention discloses an improvement of a purification module, wherein a hollow structure and a porous structure are respectively symmetrical by a common symmetrical axis. Thereby this scheme has additionally obtained the stability of product focus, does benefit to design and the application of module under different scenes, has higher product application adaptability.

The invention discloses an improvement of a purification module.A luminous body of a light source component is arranged in a hollow structure. The luminous body that here will set up is installed in hollow structure for the luminous body directly participates in arousing catalyzed illumination radiation at the inside transmission of porous structure, and this can make full use of light source effectively to a certain extent, with the form make full use of illumination radiation that the space three-dimensional surrounds, thereby promoted photocatalysis's efficiency from an angle, in addition, set up the luminous body in porous structure's inside, also can protect the luminous body to a certain extent, and effective increase of service life.

According to the improvement of the purification module disclosed by the invention, the photocatalytic functional area further comprises a photocatalyst layer formed in the area. When a catalyst needs to be loaded on a carrier of a module, the catalyst layer can be formed in a photocatalytic functional area which works effectively, and the photocatalyst layer can be a nano titanium dioxide coating, a coating containing nano titanium dioxide or other coatings containing effective photocatalytic components. Note that the photocatalyst layer herein may be attached by immersing the support in a solution or suspension containing a coating material, a colloid, or the like, or may be attached in various directions such as spraying, brushing, or the like, as long as the loading of the support to the catalyst is satisfied, and is not particularly limited herein.

In the improvement of the purification module disclosed by the invention, the light-emitting body of the light source component is at least used for providing ultraviolet light. Preferably, the light emitter of the light source assembly is at least used for providing ultraviolet light with the wavelength within a wave band of 0.01-0.40 microns. Therefore, the light emitting body can be an ultraviolet lamp, a low-power ultraviolet laser, or other light sources capable of emitting ultraviolet light with effective wavelength, and the selection of the light source is not particularly limited as long as the light source can be used for exciting the photocatalytic reaction in the scheme.

In order to further improve the application safety of the product, the outer side of the porous structural member can be provided with a protective cover for protecting the structural member in the porous structural member, and the protective cover can be directly formed on the outer side of the porous structural member, namely the porous structural member and the protective cover are attached; or, as a whole, the protective cover has a protective space on its inside, and the porous structure can be protectively arranged in the space with a certain gap between the porous structure and the protective cover. The protective cover can likewise have a grating structure or a mesh structure or other structures having this function for the ambient atmosphere, such as for air flow when applied to air cleaning products.

In order to assemble and fix the porous structure, the light source assembly and the shield according to the circumstances and requirements, a fixing structure may be further provided, for example, the light source assembly may be connected to the porous structure through the lamp holder, the porous structure may be supported and arranged in the shield through the supporting spring (specifically, the supporting spring is supported between the outer surface of the porous structure and the inner surface of the shield, that is, the supporting spring is supported between the outer surface of the porous structure and the inner surface of the shield to form a limitation), and the setting mode of the fixing structure is determined according to the specific product without limitation.

The purification system disclosed by the invention comprises the purification module. In specific product design, with should purify the module set up to the corresponding runner of system in can to the air purification is the example, then can set up this purification module in corresponding air flow channel, thereby obtains catalytic purification's effect. Purification system here can be for being provided with this scheme purification module for functional unit's air purifier, new trend system, fan, deodorizer, ceiling type ventilator top formula clarifier, including portable clarifier such as desktop clarifier, the subassembly that has set up the position and do not make clear and definite the injecing, according to the design thinking in this area, if the air purification product with its reasonable design in the wind channel, realize purification performance can.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the operation of the purification module disclosed in the present invention;

FIG. 2 is a schematic view of a state of the porous structural member of the purification module according to the present disclosure, in which the surface has holes II;

FIG. 3 is a schematic view of a further state of the porous structural member of the purification module according to the present disclosure, when the surface thereof has holes II;

FIG. 4 is a schematic structural diagram illustrating an embodiment of a purification module according to the present disclosure;

FIG. 5 is a schematic structural diagram of another embodiment of the purification module disclosed in the present invention.

Detailed Description

The present invention will be described in detail below with reference to various embodiments. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.

In the embodiment of the purification module disclosed by the invention, the porous structural member 01 is used for providing a photocatalytic reaction generation interface, and the porous structural member provides an effective photocatalytic functional area subjected to illumination radiation for a catalytic reaction through a self composition structure.

The porous surface may be in the form of a screen-like structure formed by ribs 011 (the ribs shown here may be understood as a relatively regular line structure, or a three-dimensional irregular cross-sectional structure shown in the figure, rather than being a limitation of a single-form porous structure), as shown in the example of fig. 1, and the holes i 010 having a larger pore diameter may be formed on the porous structure, and the holes i 010 may have a larger pore diameter, so that the combination of the structures of the holes i 010 on the porous structure 01 provides a basis for the implementation of the present embodiment, i.e., provides a sufficient photocatalytic functional region to satisfy the requirements of the photocatalytic reaction. In this case, the photocatalytic functional region may have a relatively smooth surface or a rough surface. The average pore diameter of the pores I is more than or equal to 0.1 mm.

Of course, in order to obtain a higher surface area, the porous surface can also be modified by forming pores II, which are smaller in size, on the surface. The average pore diameter of the pores II is less than 0.1 mm. This implementation of the hole ii can be implemented by including, but not limited to, the cases illustrated in fig. 2 and 3.

In the embodiment of fig. 2, the holes 012 recessed into the ribs 011 are formed on the porous surface, where the parameters of the holes 012, such as the recessed depth and the aperture, can be determined according to the requirements of the actual irradiation and the photocatalytic reaction, and all the parameters are required to achieve the objectives of the present invention.

In the embodiment of fig. 3, a plurality of protrusions 014 protruding outward from the ribs 011 are formed on the porous surface, and pores 013 are formed between the protrusions 014, and similarly, the protrusions 014 herein have a height of protrusion and a size of the pores 013 formed, and other parameters depending on the actual irradiation and the photocatalytic reaction requirements, and thus the object of the present invention is achieved.

In achieving the objectives illustrated by the embodiment of fig. 1, the solution of the present invention can be used with porous structures formed with hollow structures having cavities, which, of course, can expose more effective surface area to the radiation illumination to achieve the effects of the present application. It is further preferred that the porous structure or hollow structure has an axisymmetric structure, as is the case with the embodiments of fig. 4-5. Of course, even further preferred, the embodiments of fig. 4-5 also show applications where the hollow structure and the porous structure are each symmetrical with a common axis of symmetry.

Further to the efficiency of the assembly in utilizing the light emitted by the light source, a light emitter, such as a bulb/tube, etc., as desired, may be disposed within the cavity of the hollow structure as previously described, and in the case of the embodiment illustrated in fig. 4-5, the corresponding example is made so that the porous structure substantially surrounds the radiating area of the light emitter, thereby maximizing the utilization and optimization of the photocatalytic energy and volume of space, etc., as much as possible, and maximizing efficiency and effectiveness. That is, the light-emitting body can be placed at the side of the porous structure, and the light path penetrates through the porous structure to achieve the catalytic effect, but the catalytic efficiency and effect in these cases may be reduced, which needs to be further confirmed and verified.

Further, in the foregoing embodiment, the porous structure may be provided in the form of a porous substrate and a photocatalyst layer formed on a surface portion of the porous substrate, so that the photocatalyst layer also obtains an effect of increasing the effective surface area in the implementation of the present embodiment.

In addition, the porous structure can also be used for fusing the catalyst and the matrix material to form a tightly combined whole, so that the service life of the catalyst on the physical structure can be prolonged to a certain extent. In one embodiment, the catalytic component, such as nano-titania, may be incorporated directly into the surface layer of the ceramic, for example, by being directly cured to the surface layer of the ceramic in a sintered form, although other effective forms may also be used. The ceramics herein may be prepared by including, without limitation, silicon nitride, silicon carbide, aluminum oxide, magnesium oxide, calcium oxide, silicon oxide, boron nitride, tungsten carbide, tungsten oxide, and the like as the main raw material.

In addition, as a donor of catalytic illumination radiation, the light source is not strictly limited, and may be an ultraviolet lamp tube with a corresponding waveband, an ultraviolet waveband laser, or other light sources with a corresponding waveband, such as an incandescent lamp with a certain power, as long as the provided illumination radiation can meet the implementation requirements of the scheme.

The shape of the light source or the porous structure is not limited herein, and may be the shape of the embodiment shown in fig. 4-5, or may be other shapes including a sphere, which can meet the implementation requirements.

Further, two embodiments of the present application are shown in fig. 4-5, which are only illustrative of the present application and are not intended to be limiting.

In fig. 4, an embodiment of a purification module is shown, in order to be applied to an air purifier, the porous structure carries an active photocatalytic function region, which includes a porous structure 100 (which is a porous structure carrying a catalytic function, and may be, for example, a silicon carbide/silica/alumina ceramic carrier and a catalyst layer attached with nano-titania) having a plurality of through holes 105 on a surface thereof and being hollow inside, and an ultraviolet lamp tube assembly 200 located wholly or partially within the porous structure 100, and in fig. 4, a case is shown where the porous structure 100 is located wholly, in this embodiment, in an operating state, ultraviolet rays emitted from the ultraviolet lamp tube assembly 200 excite a photocatalytic reaction of the photocatalyst layer of the porous structure 100 to generate beneficial factors such as oxygen radicals, which are blown out from the plurality of through holes 105 by an air flow, the air can be rapidly captured and removed of bacteria, and the air flow passing through the surface of the porous structural member 100 is also purified, so that the purpose of eliminating indoor pollution such as virus, harmful gas and inhalable particles is achieved.

Here, the flow direction of the air flow may be purified from one side of the porous structure 100 through multiple porous structures and then discharged from the other side, in which case multiple purifications may occur; or the gas can escape from the hollow part to the periphery, and then passes through a surrounding porous structure, and is discharged from the center of the porous structural member 100 to the periphery, and the gas flow only passes through the photocatalytic functional area provided by the porous structure once to achieve the purpose of inducing purification, and at the moment, the gas flow has higher purification efficiency.

The surface of the porous structure 100 is at least partially curved, and in this embodiment, a bulb shape with a large upper end and a small lower end is preferably adopted, which may also be called a pear shape. The thickness of the porous structure 100 is preferably 0.5mm to 50mm to reduce the weight of the material, and a structure with a thickness of 6mm is selected, and the pore diameter is selected to be about 3 to 4 mm. Of course, the thickness and other dimensions can be selected according to the requirement, for example, in other large vertical equipment, when the aperture size is large, for example, the aperture has an aperture of about 8mm, the wall thickness of 30mm can be selected, and the like.

Further, the ultraviolet lamp tube assembly 200 extends in a straight shape and may also coincide with the central axis of the porous structural member 100. The ultraviolet lamp tube assembly 200 may also include a lamp cover 210 at a top end for installation, and a lamp tube 220 extending from the lamp cover 210 to a bottom end, the lamp tube 220 preferably having an ultraviolet wavelength of 185 nm. The lamp cover 210 is provided with a pair of lamp cover holes 212.

The present embodiment may further include a top cover plate 400 and a bottom cover plate 410 disposed at the upper and lower ends of the porous structure 100, and a metal pillar 300 connecting the two cover plates 400 and 410. In order to fix the metal post 300 to the corresponding two cover plates 400 and 410, a fixing member 520 and a nut 530 may be provided at both ends of the metal post. The two cover plates 400, 410 may be made of metal, ceramic, plastic, etc. The fixing member 520 is preferably a screw and is threadedly coupled to the screw hole of the metal post 300.

In fig. 5, a further embodiment of the purification module is shown, wherein the purification module comprises a hollow porous structure 1000 having a plurality of through holes 1005 on the surface, wherein the porous structure 1000 is cylindrical, and a uv lamp tube assembly 2000 partially or completely located in the porous structure 1000, and the flow arrangement of the gas flow can be similar to that of the previous embodiment, and is not limited in detail.

The ultraviolet lamp tube assembly 2000 in this embodiment may also be elongated as a whole, and the extending direction thereof may coincide with the central axis of the porous structure 1000, which is shown in the figure. The ultraviolet lamp tube assembly 2000 is further provided with a lamp cover 2100 at the top end for mounting and fixing, and a lamp tube 2200 extending from the lamp cover 2100 to the bottom end, and the ultraviolet wavelength of the lamp tube 2200 is preferably 185 nm. The lamp cover 2100 is provided with a pair of lamp cover holes 2120.

In addition, in order to provide better fixing connection, the porous structure 1000 may be provided with a top cover plate 4000, a bottom cover plate 4100 and a metal column 3000 connecting the two cover plates 4000, 4100, and the top cover plate 4000 and the bottom cover plate 4100 may have a through hole for passing through the metal column 3000. To connect the metal post 3000 to the two covers, the metal post 3000 is secured to a mount 5200, 5300 of the respective top and bottom cover 4000, 4100. Fixing member 5200 can be, for example, a screw to define one end of metal post 3000 to top cover plate, and fixing member 5300 can be defined to the outside of bottom cover plate 4100 with a nut 5300 coupled to the threads of the other end of the metal post. Fixing member iii 5100 is preferably a spacer formed at the joining position of fixing member 5200 to top cover plate 4000. The cover plates 4000 and 4100 may be made of metal, ceramic, plastic, rubber, or the like.

The technical solution of the present invention can be applied to air purification systems such as air purifiers, fresh air systems, fans, deodorizers, ceiling type ventilator-ceiling type purifiers, mobile purifiers including desktop purifiers, and the like, by including but not limited to the technical solutions shown in the above embodiments.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. Purify the module, include:

the porous structure is used for providing a surface of a porous structure, at least part of the surface is provided with a photocatalytic function area, the porous structure is provided with pores I with the average pore diameter of more than or equal to 0.1mm and/or pores II with the average pore diameter of less than 0.1mm, and the pores I and/or the pores II are through holes or counter bores;

and the light source component is provided with a luminous body and is used for providing irradiation light to the photocatalytic functional area in a working state.

2. The purification module of claim 1, wherein the porous structure is formed with a hollow structure having a cavity.

3. The purification module of claim 2, wherein the porous structure and/or hollow structure has an axisymmetric structure.

4. The purification module of claim 3, wherein the hollow structure and the porous structure are each symmetrical about a common axis of symmetry.

5. The purification module of any one of claims 2-4, wherein the light source assembly comprises a light emitter disposed within a hollow structure.

6. The purification module of claim 1, wherein the photocatalytic functional region further comprises a photocatalyst layer formed in the region.

7. The purification module of claim 6, wherein the photocatalyst layer is a photocatalyst layer comprising at least titanium dioxide.

8. The purification module of claim 1, wherein the light source assembly comprises at least one light source for providing ultraviolet light.

9. The purification module of claim 8, wherein the light source assembly comprises at least one light emitter configured to provide ultraviolet light having a wavelength in the range of 0.01 to 0.40 μm.

10. A decontamination system comprising a decontamination module as claimed in any one of claims 1-9.

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