CN205641169U - A photocatalyst air purification device - Google Patents

Abstract

The utility model provides a photocatalyst air purification device. It includes an upper baffle and a lower baffle arranged inside a shell, an upper photocatalyst plate and a lower photocatalyst plate are arranged between the upper baffle and the lower baffle, the upper photocatalyst plate and the lower photocatalyst plate form an inner air duct for air flow, the upper baffle, the lower baffle, the upper photocatalyst plate and the lower photocatalyst plate form an outer air duct for air flow, and the inner air duct is connected to the outer air duct. In the photocatalyst air purification device of the utility model, the upper photocatalyst plate and the lower photocatalyst plate form an inner air duct, and the upper baffle, the lower baffle, the upper photocatalyst plate and the lower photocatalyst plate form an outer air duct for air flow, so that when the incoming air flows, the entire air volume will be divided into two cavities and then flow out, which can greatly reduce the impact of the air flow on the shell, thereby achieving the purpose of reducing wind noise.

Description

A photocatalyst air purification device

technical field

The utility model relates to the technical field of air purification devices, in particular to a photocatalyst air purification device.

Background technique

Photocatalyst is a general term for a photo-semiconductor material with photocatalytic function represented by nano-scale titanium dioxide. It is coated on the surface of the substrate, and under the action of ultraviolet light, it produces a strong catalytic degradation function: it can effectively degrade the air. Toxic and harmful gases; can effectively kill a variety of bacteria, and can decompose and harmlessly treat the toxins released by bacteria or fungi; at the same time, it also has functions such as deodorization, anti-pollution, and air purification. Photocatalyst air purification is to use photocatalyst technology to explain the toxic and harmful substances in the air and kill a variety of microorganisms by using the hydrogen and oxygen free radicals with strong oxidation ability after being irradiated with a certain level of light under certain circumstances. a purification technique. Photocatalyst air purification device is a device for air purification by photocatalyst.

In the prior art, the noise of the photocatalyst air purification device is relatively large during operation.

Utility model content

In view of this, the purpose of the embodiment of the utility model is to provide a photocatalyst air purification device with less noise during operation.

A photocatalyst air purification device, comprising an upper baffle and a lower baffle arranged inside the casing, an upper photocatalyst plate and a lower photocatalyst plate are arranged between the upper baffle and the lower baffle, and the upper photocatalyst plate and the lower photocatalyst The inner air duct for air flow is surrounded by the board, the outer air duct for air flow is surrounded by the upper baffle plate, the lower baffle plate, the upper photocatalyst plate and the lower photocatalyst plate, and the inner air duct is connected with the outer air duct. The road is connected.

Further, it also includes an upper installation frame for installing the upper photocatalyst plate, and the upper installation frame is installed under the upper photocatalyst plate.

Further, it also includes a lower installation frame for installing the lower photocatalyst plate, and the lower installation frame is installed above the lower photocatalyst plate.

Further, the upper photocatalyst plate includes an upper plate body, and the plate body includes a plurality of connected upper flaps, and the upper flaps are arranged in a ring.

Further, an upper through hole is provided in the middle of the upper plate.

Further, the lower photocatalyst plate includes a lower plate body, and the lower plate body includes a plurality of connected lower flaps, and the lower flaps are arranged in a ring.

Further, a lower through hole is provided in the middle of the lower plate body.

Further, the upper baffle is in the shape of a truncated cone.

Further, the lower baffle is in the shape of a truncated cone.

Further, it also includes a fan arranged inside the casing and above the upper photocatalyst plate.

In the photocatalyst air purification device of the present utility model, the upper photocatalyst plate and the lower photocatalyst plate are surrounded by an inner air duct, and the upper baffle plate, the lower baffle plate, the upper photocatalyst plate and the lower photocatalyst plate are surrounded by an outer air duct for air flow, so that When the incoming air is flowing, the entire air output will be divided into two cavities and then flow out, which can greatly reduce the impact of the air flow on the housing, thereby achieving the purpose of reducing wind noise.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 shows the structural diagram of the outer air duct and the inner air duct provided by the embodiment of the utility model.

Fig. 2 shows the structural view of the photocatalyst plate provided by the embodiment of the present invention.

Fig. 3 shows the structural view of the lower photocatalyst plate provided by the embodiment of the present invention.

Fig. 4 shows the structure of the catalytic air cleaning device provided by the embodiment of the present invention

composition.

Description of main component symbols:

100 catalytic air purification device

20 shells

21 Upper case

22 Inlet housing

23 grille

24 bottom plate

30 inner duct

31 Photocatalyst plate

311 upper plate body

3111 Top flap

312 upper through hole

32 lower photocatalyst plate

321 Lower plate body

3211 Bottom flap

322 Bottom through hole

40 Outer duct

41 Upper bezel

42 lower bezel

50 Upper Mounting Bracket

60 lower mounting bracket

70 fans

80 filter elements.

detailed description

In order to facilitate the understanding of the present utility model, the socket-type scaffold will be described more comprehensively below with reference to the relevant drawings. A preferred embodiment of the socket-type scaffold is given in the accompanying drawings. However, socket scaffolding can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the socket-type scaffold more thorough and comprehensive.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description , rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, unless otherwise stipulated and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be The internal communication between two elements may be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Please refer to Figure 1 and Figure 4. The photocatalyst air purification device 100 of the utility model embodiment comprises the upper baffle plate 41 and the lower baffle plate 42 that are arranged on the inside of the housing 20, and the upper photocatalyst plate 31 and the lower baffle plate 42 are arranged between the upper baffle plate 41 and the lower baffle plate 42. Lower photocatalyst plate 32, described upper photocatalyst plate 31 and lower photocatalyst plate 32 surround the inner air passage 30 for supplying air flow, described upper baffle plate 41, lower baffle plate 42, upper photocatalyst plate 31 and lower photocatalyst plate 32 forms an outer air duct 40 for air flow, and the inner air duct 30 communicates with the outer air duct 40 .

The photocatalyst air cleaning device 100 of above-mentioned embodiment, upper photocatalyst plate 31 and lower photocatalyst plate 32 surround and form inner air passage 30, and upper baffle plate 41, lower baffle plate 42 are enclosed with shell 20 and form outer air duct 40, so that enter When the air is flowing, the entire air volume will be divided into two cavities and then flow out, which can greatly reduce the impact of the straight air flow on the shell 20, thereby achieving the purpose of reducing wind noise.

It can be understood that the above-mentioned upper photocatalyst plate 31 is located above the lower photocatalyst plate 32, and the upper photocatalyst plate 31 and the lower photocatalyst plate 32 are matched and installed together; the upper baffle plate 41 is located above the lower baffle plate 42, and the two cooperate and installed together. The upper baffle plate 41 , the lower baffle plate 42 , the upper photocatalyst plate 31 , and the lower photocatalyst plate 32 can all be concave plate-shaped bodies, so as to prolong the flow path of air in the outer air duct 40 and the inner air duct 30 . Note that the above four concave plate-shaped bodies are not necessary, and the purpose of reducing noise can be achieved in the outer air duct 40 and the inner air duct 30 .

It is worth noting that the above-mentioned inner air duct 30 and outer air duct 40 are restricted spaces in which the air flows. The inner air duct 30 and the outer air duct 40 are connected and a plurality of openings can be set through the inner air duct 30 and the outer air duct 40. These openings can be in the form of through holes or pores. Here, the through holes refer to the upper baffle plate 41 and the lower baffle plate. 42. The surface of the upper photocatalyst plate 31 and the lower photocatalyst plate 32 is arranged; the gap can be maintained when the upper baffle plate 41 and the lower baffle plate 42 are installed, and the gap is maintained when the lower baffle plate 42 and the upper baffle plate 41 are installed together. The setting positions of these ports are as follows: the inner air duct 30 has a plurality of ports, for example four, wherein the upper and lower ports are inlet and outlet respectively, and the left and right ports are side ports. When the air flows in the inner air channel 30, it can respectively collide with the inner surfaces of the upper photocatalyst plate 31 and the lower photocatalyst plate 32 and continuously reflect. The outer air duct 40 has a plurality of openings, such as two openings, which can be located at upper and lower positions for inlet and outlet. Tall style. Here, when the upper baffle plate 41 and the lower baffle plate 42 are concave in shape (the concave surface is the inner surface of the outer air duct 40), and both are symmetrical structures, the outer air duct 40 can be divided into four air duct. The left half of the upper baffle 41 and the upper left wall of the housing 20 form an air duct (referred to as D air duct), the right half of the upper baffle 41 forms an air duct with the upper right wall of the housing 20 (denoted as C air duct), and the lower The left half of the baffle plate 42 and the left lower wall of the casing 20 form an air passage (referred to as A air passage), and the right half of the lower baffle 42 forms an air passage (represented as B air passage) with the right lower wall of the casing 20. ).

The flow process of the air in the inner air duct 30 and the outer air duct 40 will be described below.

Part of the air coming in from the inlet of the outer air duct 40 enters through the inlet of the inner air duct 30 . When the inlet area of the inner air duct 30 is smaller than the outlet area of the inner air duct 30, the air coming in from the inlet of the inner air duct 30 will move upward through the air duct A and the air duct B under the push of the wind pressure, and pass through the air duct A and B. Channel C and air channel D are discharged from the outlet of the external air channel 40 . Because the air intake area of the upper photocontact plate and the housing 20 is smaller than the area of the lower photocatalyst and the housing 20, under the action of wind pressure, a part of the air volume from the air ducts A and B will be sucked into the middle cavity from the inner air duct 30 upwards. sports. The air intake area of the upper photocontact plate and the upper baffle plate 41 is smaller than the area of the lower photocatalyst and the lower baffle plate 42. Under the effect of wind pressure, a part of the air volume from the air duct A and the air duct B will flow from the side of the inner air duct 30. The mouth is sucked into the inner air duct 30 and moves upward.

An upper mounting frame 50 may be provided for mounting the photocatalyst plate 31 . The upper mounting bracket 50 is installed under the upper photocatalyst plate 31 . The structure of the upper mounting bracket 50 can adopt known mounting brackets. Of course, in order to match the ring shape of the upper photocatalyst plate 31, a structure of the upper mounting frame 50 can be enumerated. The upper mounting frame 50 includes an outer frame, a middle frame and an inner frame. The inner frame, the outer frame and the middle frame are parallel to each other, the outer frame can be located at the uppermost layer, the inner frame is located at the middle layer, and the middle frame is located at the bottom layer. The inner frame, the middle frame and the outer frame can all be circular, the inner diameter of the outer frame is larger than the inner diameter of the middle frame, and the inner diameter of the middle frame is larger than the inner diameter of the inner frame. The inner frame and the middle frame are connected with a plurality of connecting bars (for example, three), and these connecting bars are arranged at uniform angle intervals at the center of the inner frame and the middle frame, that is, two adjacent connecting bars form an angle of 120 degrees. A plurality of connecting bars (for example, three) can also be connected between the inner frame and the outer frame, and these connecting bars can be arranged at evenly spaced angles. Multiple LED light sources (such as three) can be installed on the top wall of the inner frame, and the LED light source can be located on a top wall and/or bottom wall of the inner frame. Note that "top wall" and "bottom" here refer to Section of the inner frame.

A lower mounting frame 60 may be provided for mounting the lower photocatalyst plate 32 , and the lower mounting frame 60 is installed above the lower photocatalyst plate 32 . The structure of the upper mounting bracket 50 can adopt known mounting brackets. Of course, in order to match the ring shape of the lower photocatalyst plate 32, a structure of the lower mounting frame 60 can be enumerated. The lower mounting frame 60 may include a frame plate that matches the shape of the inner frame to be embedded in the inner frame. Taking the aforementioned inner frame as an example, the frame plate is disc-shaped. The side wall of the rack is connected with a plurality of legs (such as three). The top wall and/or bottom wall of the shelf can be provided with a plurality of LED light sources.

See Figure 2. In order to increase the contact area of the photocatalyst to improve the efficiency of the photocatalytic reaction, a kind of photocatalyst plate can be cited. The upper photocatalyst plate includes an upper plate body 311, and the upper plate body 311 is composed of a plurality of upper flaps 3111, and the plurality of upper flaps 3111 are arranged in a ring. Here, the circular arrangement makes the upper plate body 311 circular or quasi-circular. The connection between the upper flaps 3111 is an integrated connection, so that the board body is an integrated structure. Note that the division of the upper plate body 311 into multiple upper folds here is only for the purpose of description, and it should not be misunderstood that the upper plate body 311 is spliced by multiple upper folds. The upper flap 3111 is V-shaped, that is, it includes two upper flaps, the two upper flaps can be flat or similar, and the angle formed by the two upper flaps can be 15 to 145 degrees for reference. Angles are face angles. Of course, the upper flange can also be a curved surface. In this structure of the upper photocatalyst plate, the plate body is in a W-shaped fan-like shape.

As an embodiment of the outlet of the inner air duct 30, the upper plate body 311 can be provided with an upper through hole 312, and the upper through hole 312 can be set at the central position of the plate body, and the shape of the through hole is not limited, such as circular, square, etc. .

The structure of the upper plate body 311 has been introduced above, that is, the W shape is similar to a fan shape, and now the inner material of the upper plate body 311 is introduced. The upper plate body 311 may include three layers, the two surface layers are honeycomb photocatalyst nets, and the filter fiber is located between the two surface layers. Here, the honeycomb photocatalyst net is made by doping nano-scale powder with a variety of nano-scale light-sensitive semiconductor media to ensure air permeability and sufficient contact, and then mixed with the carrier. Honeycomb photocatalyst net can adopt known, for example be divided into cotton-based photocatalyst filter net, aluminum-based photocatalyst filter net, nickel-based photocatalyst filter net, non-woven photocatalyst filter net from material, or be divided into porous foam photocatalyst purification net, Hexagonal aluminum honeycomb photocatalyst purification net, porous metal photocatalyst purification net, etc., or from the preparation process can be divided into aluminum frame photocatalyst filter, paper frame photocatalyst filter, composite photocatalyst filter, etc. The honeycomb photocatalyst net is composed of a honeycomb carrier and a photocatalyst material loaded on the carrier. The honeycomb carrier can be used as the Chinese patent, specifically: a kind of honeycomb glass photocatalyst carrier is melted and stacked. The carrier is made of glass filaments with a diameter of 1 mm. The carrier has connected pores with a diameter of 1 mm. ×0.5m, and then oxygen plasma treatment was performed on the carrier to increase the surface hydroxyl groups. As for the loading method of the photocatalyst material on the honeycomb carrier, known dip coating can be used. The photocatalyst material can be nano titanium dioxide, nano ZnO, nano CdS, nano WO ₃ , nano Fe ₂ O ₃ , nano PbS, nano SnO ₂ , nano ZnS, nano SrTiO ₃ , nano SiO ₂ or nano precious metals (such as platinum, rhodium, palladium etc.), without further enumeration. Filter fibers are fibers that have a filter function. The filter fiber can be well-known such as polyester, acrylic fiber, polypropylene fiber, vinylon fiber, etc. Also refer to the Chinese patent, specifically the filter fiber is characterized by a fiber tow with a diameter of 0.01 to 0.1mm formed by the raw material pulp, which contains 11 to 15% of the solid content of the bamboo pole pulp and 38 to 42% of the straw pulp. material solids, 40-45% asparagus pulp solids and 3-6% wood pole pulp solids. The characteristic of the production method is that the raw materials are soaked in water for more than 3 days after being finely divided, put into high-pressure cooking equipment for cooking for more than 2 hours, and after being taken out, they are ground into a slurry by a refiner, and then the concentration of the slurry is adjusted to 1% of the total solid content. The quality is 56-70%, and finally, the slurry is pressure-jet-drawn into fiber tows by using a spinneret with a spinneret hole of 0.01-0.1 mm.

See Figure 3. In order to increase the contact area of the photocatalyst to improve the efficiency of the photocatalytic reaction, a lower photocatalyst plate can be cited. The lower photocatalyst plate includes a lower plate body 321 . The structure of the lower plate 321 can be the same as that of the upper plate 311 and its material composition can be the same as that of the upper plate 311 , which will not be repeated here.

It is worth emphasizing that the lower plate body 321 may be provided with a lower through hole 322 , and the lower through hole 322 serves as an implementation manner of the inlet of the inner air duct 30 . In order to make the air flow of the inner air duct 30 flow from the lower part of the housing 20 to the upper part of the housing 20, the size of the lower through hole 322 can be set to be larger than the upper through hole 312, so as to form a flow from the lower part of the inner air duct 30 to the upper part of the housing 20. The air pressure at the top of the inner air duct 30.

The aforementioned lower baffle plate 42 may be in the shape of a truncated cone, that is, a funnel shape with a narrow bottom and a wide top or similar funnel shape. Here, the truncated cone shape may be a truncated cone shape or a truncated cone shape. Both ends of the lower baffle 42 may be of an open structure, and the opening of the lower opening (ie, the lower opening) may be narrower than the upper opening (ie, the upper opening). The shape of the upper opening and the lower opening is not limited, such as a circle and the like. The lower opening can be used as a way to realize the inlet of the outer air duct 40 .

A plurality of LED light sources (such as three) can be installed on the inner wall of the lower baffle plate 42, and the three LED lights can be arranged in a ring at uniform angular intervals, that is, two adjacent LED light sources form an angle of 120 degrees, so that the alignment can be achieved. The photocatalyst plate 31 and the lower photocatalyst plate 32 are fully irradiated in all directions.

The above-mentioned upper baffle plate 41 may also be in the shape of a truncated cone, that is, a funnel shape with a wide bottom and a narrow top or similar funnel shape. Both ends of the upper baffle plate 41 may be in an open structure, and the upper opening (ie, the upper opening) may be narrower than the lower opening (ie, the lower opening). The shape of the upper opening and the lower opening is not limited, such as a circle and the like. The upper opening can be used as a way to realize the outlet of the outer air duct 40 , and the upper opening can be used as a way to realize the outlet of the outer air duct 40 .

The inner wall of the lower baffle 42 can also be equipped with a plurality of LED light sources, which can be the same as that of the upper baffle 41, and will not be described in detail here. The height of the lower baffle 42 can be set to be smaller than the height of the upper baffle 41 , for example, the height of the lower baffle 42 is 1/3˜1/2 of the height of the upper baffle 41 . The height of the lower baffle 42 may be 1/8˜1/5 of the ratio of the diameter of the lower opening, so that the lower baffle 42 is disc-shaped.

In order to realize the installation of the upper baffle plate 41 and the lower baffle plate 42 , mutually cooperating clamping parts can be provided on the two. The snap-in parts can take known forms. Note that when the upper baffle plate 41 and the lower baffle plate 42 are installed through the clamping parts, a certain gap can be kept between the two to serve as the side opening of the outer air duct 40 .

A fan 70 can also be arranged inside the casing 20, and the fan 70 can be arranged above the photocatalyst plate. The fan 70 is used to generate a bottom-up thrust to promote air flow inside the casing 20 . Fan 70 can adopt all fans 70 familiar in the art.

A filter element 80 may also be disposed inside the casing 20 and below the lower baffle 42 . The filter core 80 can adopt all structures known in the art. Of course, a structure can also be listed here, specifically: it includes a plurality of straight filter rods, and the filter rods can be straight. A plurality of filter rods are arranged in a ring to form a stem, for example, the stem may be cylindrical. The two sides of the filter rod (the two sides are parallel to each other) can be parallel to the axis of the filter column. The surface of the filter rod can be inclined to the cutting plane passing through the filter rod, and the angle of inclination can be 10 to 45 degrees. In addition, another kind of structure can also be enumerated, namely similar to shutters.

The casing 20 may include an upper casing 21 at the upper part of the side wall, an air intake casing 22 at the lower part of the side wall, a grille 23 at the top wall and a bottom plate 24 at the bottom wall. The upper shell 21 can be a cylindrical plate; the air intake shell 22 can be a cylindrical plate, which is provided with a plurality of air intake holes for outside air to enter. These air intake holes can be arranged staggeredly. In order to facilitate the installation and disassembly of the components inside the housing 20, the connection between the upper housing 21 and the intake housing 22 can be configured as a detachable structure.

The housing 20 also includes a grill 23 located on the upper portion of the fan 70 . The grille 23 serves as an outlet for the air of the housing 20 . The shape and structure of the grid 23 can be known, and a structure can be cited, specifically: it includes a circular outer frame and an inner frame, and the inner frame is located at the center of the outer frame and the two are concentric. Connecting the outer frame body and the inner frame body is provided with a plurality of grid bars, the grid bars are arranged in a circle around the center of the inner frame body, and a lattice space is formed between the plurality of grid bars.

The bottom plate 24 is connected to the air intake casing 22 , which is a circular plate and can be perpendicular to the air intake casing 22 . The bottom plate 24 mainly plays a role of supporting the housing 20 .

See Figure 4. The following introduces the installation process of the photocatalyst air cleaner of the utility model embodiment.

Install the filter core 80 inside the intake housing 22 on the base plate 24, install the lower baffle plate 42 in the inside of the filter core 80, install the lower mounting frame 60 in the lower baffle plate 42, and install the lower photocatalyst plate under the lower mounting frame 60. Install the upper mounting frame 50 on the lower mounting frame 60, and install the photocatalyst plate on the top of the upper mounting frame 50, then install the upper baffle plate 41 on the outside of the upper photocatalyst plate, and then install the upper baffle plate 41 and the lower baffle plate 42 Together, the upper photocatalyst plate and the lower photocatalyst plate are located in the space enclosed by the upper baffle plate 41 and the lower baffle plate 42 . A fan 70 is installed on the top of the upper baffle plate 41 , and the upper casing 21 is installed on the intake casing 22 to form the casing 20 . A grill 23 is installed on the upper portion of the upper case 21 .

Introduce the air purification process of the photocatalyst air cleaner of the utility model embodiment below.

Air enters the housing 20 from the filter element 80 , enters the outer air passage 40 from the lower through hole 322 of the lower baffle 42 , and part of it enters the inner air passage 30 . In the inner air duct 30 and the outer air duct 40, a plurality of LED light sources installed on the upper baffle plate 41, the lower baffle plate 42, the upper mounting frame 50 and the lower mounting frame 60 irradiate the upper photocatalyst plate and the lower photocatalyst plate, and the air is Under the catalysis of the photocatalyst material of the upper photocatalyst plate and the lower photocatalyst plate, a photocatalytic reaction occurs under the action of ultraviolet light from the LED light source to obtain purification. The purified air is discharged from the upper through hole 312 of the upper baffle 41 , and is discharged from the housing 20 through the grille 23 under the suction generated by the fan 70 .

Although the terminology used to represent the structure, such as "housing", "upper baffle", "lower baffle", "upper photocatalyst plate", "lower photocatalyst plate", etc., does not exclude the possibility of using other terms sex. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A photocatalyst air cleaning device, characterized in that, comprises an upper baffle plate and a lower baffle plate arranged on the inside of the shell, an upper photocatalyst plate and a lower photocatalyst plate are provided between the described upper baffle plate and the lower baffle plate, the described The upper photocatalyst plate and the lower photocatalyst plate form an inner air duct for air flow, and the upper baffle plate, lower baffle plate, upper photocatalyst plate and lower photocatalyst plate form an outer air duct for air flow. The inner air duct communicates with the outer air duct. 2 . The photocatalyst air cleaning device according to claim 1 , further comprising an upper mounting frame for installing the upper photocatalyst plate, and the upper mounting frame is installed under the upper photocatalyst plate. 3 . 3. The photocatalyst air cleaning device according to claim 1, further comprising a lower mounting frame for installing the lower photocatalyst plate, and the lower mounting frame is installed above the lower photocatalyst plate. 4. The photocatalyst air cleaning device according to claim 1, wherein said upper photocatalyst plate comprises an upper plate body, said upper plate body comprises a plurality of connected upper flaps, said upper flaps are annular arranged. 5. The photocatalyst air cleaning device according to claim 4, wherein an upper through hole is provided in the middle of the upper plate body. 6. The photocatalyst air cleaning device according to claim 1, wherein the lower photocatalyst plate comprises a lower plate body, and the lower plate body comprises a plurality of connected lower flaps, and the lower flaps are annular arranged. 7. The photocatalyst air cleaning device according to claim 6, wherein a lower through hole is provided in the middle of the lower plate body. 8. The photocatalyst air purification device according to claim 1, wherein the upper baffle is in the shape of a truncated cone. 9. The photocatalyst air purification device according to claim 1, wherein the lower baffle is in the shape of a truncated cone. 10 . The photocatalyst air cleaning device according to claim 1 , further comprising a fan disposed inside the casing and above the upper photocatalyst plate. 11 .