Photocatalyst air disinfection module

Abstract

The utility model discloses a photocatalyst air disinfection module which comprises a shell with an inner cavity, an excitation light source and a disinfection module, the excitation light source and the disinfection module are arranged in the shell, the shell is provided with an air inlet and an air outlet which are communicated with the inner cavity, the disinfection module comprises a fan and a plurality of groups of photocatalyst plates, the fan is fixed in the inner cavity of the shell, and the photocatalyst plates are fixed in the shell. The photocatalyst plate is arranged between the fan and the air outlet; the photocatalyst plate is composed of at least two honeycomb plates which are obliquely arranged, and a plurality of ventilation holes are formed in the honeycomb plates in a penetrating manner; the photocatalyst plates are coated with photocatalysts, each group of photocatalyst plates is provided with at least one excitation light source, and the excitation light sources are located over the corresponding photocatalyst plates. According to the utility model, the photocatalyst plate with a special structural form is adopted, and the photocatalyst plate with a V-shaped, inverted V-shaped, N-shaped or W-shaped structure is formed by the two honeycomb plates, so that the contact area of the photocatalyst plate and the light of the excitation light source is greatly increased, the catalytic efficiency and catalytic effect of the photocatalyst are effectively improved, and the disinfection and killing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disinfection equipment, in particular to a photocatalyst air disinfection module. Background Art

[0002] As people pay more and more attention to the air quality of their living environment, especially in densely populated indoor industrial control environments, various germs, odors, formaldehyde and other harmful substances are affecting the air quality and people's health. The demand for disinfection and sterilization is also increasing, and the demand for various disinfection equipment has soared.

[0003] The mainstream disinfection methods currently on the market include ultraviolet disinfection, plasma disinfection, photocatalyst disinfection, ozone disinfection and disinfectant disinfection. All of the above disinfection methods require the use of separate disinfection equipment and occupy additional disinfection equipment installation space. In photocatalyst disinfection equipment, due to structural limitations, the illumination area is insufficient and the disinfection effect cannot be fully exerted. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a photocatalyst air disinfection module with good disinfection effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a photocatalyst air disinfection module, comprising a shell with an inner cavity and an excitation light source and a disinfection module arranged inside the shell, the shell is provided with an air inlet and an air outlet connected to the inner cavity, the disinfection module comprises a fan and multiple groups of photocatalyst plates, the fan is fixed in the inner cavity of the shell, and the photocatalyst plate is arranged between the fan and the air outlet; the photocatalyst plate is composed of at least two honeycomb plates with multiple ventilation holes arranged through them and arranged in an inclined manner; the photocatalyst plate is coated with a photocatalyst, and each group of photocatalyst plates is equipped with at least one excitation light source, and the excitation light source is located directly above the corresponding photocatalyst plate. The disinfection module arranged in the shell of the utility model irradiates the photocatalyst plate through an exciting light source to carry out a photocatalytic reaction, so that the light touch coated on the photocatalyst plate produces hydroxyl radicals, and at the same time uses a fan to draw external air into the shell through the air inlet, so that the hydroxyl radicals produced by the photocatalytic reaction react with harmful substances such as viruses and bacteria in the air to undergo an oxidation-reduction reaction to achieve the disinfection of viruses and bacteria, and the purified air is then discharged into the indoor environment through the air outlet, and the continuous cycle of the above disinfection work gradually achieves the complete purification of the indoor air; the utility model adopts a photocatalyst plate with a special structural form, and uses two honeycomb plates to form a V-shaped, inverted V-shaped, N-shaped or W-shaped photocatalyst plate, so that the area in contact with the light of the exciting light source is greatly improved, which effectively improves the catalytic efficiency and catalytic effect of the photocatalyst, thereby improving the disinfection effect, and at the same time the photocatalyst plate maintains a three-dimensional state, which will not affect the smooth flow of air through the vents on the photocatalyst plate inside the shell, and can ensure normal circulation and exchange between the inside of the shell and the outside air.

[0006] As an improvement of the above scheme: the shell is a rectangular shell, and multiple evenly arranged air outlets are arranged on the four sides of the shell. The photocatalyst plate is arranged in a rectangular array around the fan and directly opposite to the air outlet on the same side; the air inlet is arranged at the bottom of the shell and directly below the fan. The shape of the shell is not limited. In the utility model, a shell with a rectangular structure is used as the preferred scheme. Its shape is easy to process and the production cost is lower than that of shells of other shapes. By limiting the setting positions of the air outlet and the air inlet, a ventilation channel with a shorter distance can be formed between the air inlet and the fan and between the air outlet and the photocatalyst plate, and the air circulation effect inside and outside the shell is better. At the same time, the air outlet discharges air from the side of the shell, which can avoid the air blowing directly on the user, thereby improving the user's comfort.

[0007] As an improvement of the above scheme: the ventilation holes on the photocatalyst plate are inclined holes extending in the thickness direction of the honeycomb plate, and the ventilation holes are directly opposite to the air outlet in the horizontal direction. In the utility model, the arrangement of the ventilation holes on the photocatalyst plate is optimized so that the extension direction of the ventilation holes remains horizontal. Since the honeycomb plate is inclined, the extension direction of the corresponding ventilation holes is inclined in the thickness direction of the honeycomb plate; the ventilation holes extending horizontally and directly opposite to the air outlet can reduce wind resistance to the greatest extent, guide the purified air to flow in the direction of the air outlet, thereby greatly improving the efficiency of disinfecting bacteria in the air.

[0008] As an improvement of the above scheme: it also includes a fan bracket fixed inside the shell, and the fan bracket is a hollow structure; the fan is installed in the fan bracket, and multiple groups of photocatalyst plates are arranged on the periphery of the fan bracket and abut against the fan bracket; the fan bracket is also provided with a control mainboard electrically connected to the fan and the excitation light source, and the control mainboard is provided with a power interface. The utility model fixes and supports the fan by setting a fan bracket to separate the fan from the shell, so that a space for air circulation is left between the fan and the air inlet of the shell, which will not hinder the circulation of air and is conducive to promoting air circulation inside and outside the shell.

[0009] As an improvement of the above solution: the excitation light source is a UVA ultraviolet light source with a wavelength range of 365 to 370 nm, which can greatly reduce the harm of ultraviolet rays to the human body.

[0010] As an improvement of the above solution: it also includes a heat sink, which is fixed in the housing and the excitation light source is installed on the heat sink. The utility model dissipates heat from the excitation light source by setting a heat sink, so as to reduce the working temperature inside the housing.

[0011] As an improvement of the above scheme: the shell is composed of a bottom plate and a top cover that are detachably connected, the air inlet is composed of a plurality of air inlet holes arranged in a circular array on the bottom plate, and the arrangement range of the air inlet holes covers the projection of the fan on the bottom plate; the air outlet is arranged on the side of the bottom plate. The shell in the utility model is composed of a bottom plate and a top cover that are detachably connected, which is convenient for assembling and disassembling the shell, and can quickly assemble the internal components, and it is also convenient for repairing the internal components later; the utility model optimizes the arrangement of the air inlet so that the air inlet can cover the entire working range of the fan, which can effectively improve the efficiency of air circulation from the outside of the shell to the inside of the shell.

[0012] As an improvement of the above scheme: the area of ​​the top cover is smaller than the area of ​​the bottom plate, the periphery of the top cover is provided with a convex edge extending horizontally outward, and the four peripheral parts of the bottom plate are connected with the corresponding convex edges to form a limiting step. The utility model can install the disinfection module in an embedded installation manner by setting a convex edge on the top cover and limiting the difference in area between the top cover and the bottom plate, so that the upper half of the shell can be embedded in the installation space, leaving only the lower half that needs to exchange gas with the external environment, which can reduce the overall space occupied by the disinfection module and improve the aesthetics of the disinfection module; at the same time, the limiting step is used to limit the shell to facilitate the positioning and installation of the shell, and it can also play a role in sealing the installation gap.

[0013] As an improvement of the above solution: the structure of the photocatalyst plate composed of the honeycomb plate includes a V-shaped structure, an inverted V-shaped structure, an N-shaped structure or a W-shaped structure.

[0014] The beneficial effects are as follows: the utility model sets a disinfection module in the shell to irradiate the photocatalyst plate with an excitation light source to carry out a photocatalytic reaction, so that the light touch coated on the photocatalyst plate produces hydroxyl radicals, and at the same time uses a fan to draw external air into the shell through the air inlet, so that the hydroxyl radicals produced by the photocatalytic reaction react with harmful substances such as viruses and bacteria in the air to undergo an oxidation-reduction reaction to achieve the disinfection of viruses and bacteria, and the purified air is then discharged into the indoor environment through the air outlet, and through the continuous cycle of the above disinfection work, the indoor air is gradually purified completely; the utility model adopts a photocatalyst plate with a special structural form, and uses a photocatalyst plate composed of at least two honeycomb plates and at least one honeycomb plate inclinedly arranged, so that the area in contact between the photocatalyst plate and the light of the excitation light source is greatly improved, effectively improving the catalytic efficiency and catalytic effect of the photocatalyst, thereby improving the disinfection effect, and at the same time, the photocatalyst plate maintains a three-dimensional state, which will not affect the smooth flow of air through the vents on the photocatalyst plate inside the shell, and can ensure normal circulation and exchange between the shell and the outside air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric drawing of the utility model;

[0016] Figure 2 This is a structural exploded view of one of the viewing angles of the utility model;

[0017] Figure 3 This is a structural exploded view of the utility model from another perspective;

[0018] Figure 4 A side cross-sectional view of one embodiment of the utility model;

[0019] Figure 5 It is a side cross-sectional view of another embodiment of the utility model.

[0020] Marked in the figure: 100-housing, 110-air inlet, 120-air outlet, 130-bottom plate, 140-top cover, 141-convex edge, 200-excitation light source, 300-disinfection module, 310-fan, 320-photocatalyst board, 330-fan bracket, 340-control main board, 400-heat sink. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", and "inside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] like Figures 1 to 3 As shown, the catalyst air disinfection module disclosed in the utility model includes a housing 100, an excitation light source 200 and a disinfection module 300. The housing 100 is a hollow structure with an inner cavity, and the excitation light source 200 and the disinfection module 300 are both arranged in the inner cavity of the housing 100. The housing 100 is provided with an air inlet 110 and an air outlet 120, and the air inlet 110 and the air outlet 120 are both connected to the inner cavity of the housing 100 to realize gas exchange between the inside of the housing 100 and the external environment. The utility model adopts an excitation light source 200 to cooperate with a disinfection module 300 to achieve air disinfection and purification; specifically, the disinfection module 300 includes a fan 310 and a photocatalyst plate 320. The fan 310 draws the purified air in the external environment of the housing 100 into the interior of the housing 100, and causes the air in the housing 100 that has been disinfected and purified to be discharged to the external environment; the photocatalyst plate 320 is used to achieve air disinfection and purification with the excitation light source 200. A photocatalyst is coated on the photocatalyst plate 320. When the photocatalyst is irradiated by the light emitted by the excitation light source 200, a photocatalytic reaction will occur to generate hydroxyl radicals that can kill viruses and bacteria, thereby achieving air disinfection and purification. The excitation light source 200 adopts a UVA ultraviolet light source with a wavelength range of 365 to 370 nm, and the photocatalyst coated on the photocatalyst plate 320 adopts nano titanium dioxide.

[0024] like Figure 4As shown, in the present invention, the photocatalyst plate 320 is arranged between the fan 310 and the air outlet 120, and the excitation light source 200 is arranged above the photocatalyst plate 320. The excitation light source 200 emits light to irradiate the photocatalyst plate 320 so that the photocatalyst undergoes a photocatalytic reaction to generate hydroxyl radicals. At the same time, the fan 310 works to draw external air into the housing 100, and promotes the air entering the housing 100 to flow toward the air outlet 120. When the air flows to the photocatalyst plate 320, the hydroxyl radicals generated on the photocatalyst plate 320 kill bacteria and viruses in the air, and the disinfected and purified air is then discharged to the external environment through the air outlet 120, and this cycle is repeated until the indoor air is purified.

[0025] Since the photocatalytic reaction effect of the photocatalyst on the photocatalyst plate 320 is affected by the area of ​​light irradiation, in order to maximize the light receiving area of ​​the photocatalyst plate 320, the present invention adopts a photocatalyst plate 320 with a special structure. Figures 2 to 4 As shown, each group of photocatalyst plates 320 uses two honeycomb plates that are relatively inclined to form a V-shaped structure, and the opening of the V-shaped structure is oriented toward the excitation light source 200. Each group of photocatalyst plates 320 is equipped with at least one excitation light source 200, and the excitation light source 200 is located directly above the corresponding photocatalyst plate 320 and directly opposite to the opening of the V-shaped structure. Baffles can also be set at both ends of the V-shaped structure to block the air to form an air channel through which air can only flow through the honeycomb plate; a plurality of ventilation holes are arranged on the honeycomb plate for air circulation; it can also be as shown in FIG. Figure 5 As shown, the number of honeycomb panels is increased, and two groups of V-shaped structures are connected to form a W-shaped photocatalyst plate 320; the number of honeycomb panels arranged obliquely can also be increased to form an inclined N-shaped photocatalyst plate 320. After adopting the photocatalyst plate 320 of the above structure, the area of ​​the photocatalyst plate 320 receiving light is effectively improved, and by lowering the setting height of the excitation light source 200 so that the excitation light source 200 is as flush as possible with the top of the honeycomb panel, the inclined honeycomb panel can shield the excitation light source 200 from the side, so that the light emitted by the excitation light source 200 will not overflow, and irradiate the photocatalyst plate 320 to the greatest extent.

[0026] Further, such as Figure 4 As shown, the ventilation holes on the photocatalyst plate 320 are inclined holes extending in a direction oblique to the thickness of the honeycomb plate, and the ventilation holes are horizontally opposite to the air outlet 120. In the present invention, the arrangement of the ventilation holes on the photocatalyst plate 320 is optimized so that the extension direction of the ventilation holes remains horizontal. Since the honeycomb plate is inclined, the extension direction of the corresponding ventilation holes is inclined to the thickness direction of the honeycomb plate; the ventilation holes extending horizontally and facing the air outlet 120 can reduce wind resistance to the greatest extent, guide the purified air to flow in the direction of the air outlet 120, thereby greatly improving the efficiency of disinfecting bacteria in the air.

[0027] The shape of the housing 100 is not limited, for example, a regular circle, a polygon or an irregular shape can be used as the shape of the housing 100. Figures 1 to 3 As shown, the present invention uses a rectangular shell 100 as a preferred solution. The use of a rectangular shell 100 can facilitate the assembly and installation of the shell 100. Compared with a circular or other irregularly shaped shell, the panel shape required for the assembly of the rectangular shell 100 is more regular, which is convenient for production and can reduce production costs and assembly difficulties. At the same time, the shape requirements for the installation location are lower and the applicability is wider. The shell 100 is composed of a bottom plate 130 located at the bottom and a top cover 140 located at the top. The edge of the bottom plate 130 is bent upward, and the edge of the top cover 140 is bent downward. The specific connection method can be bolt connection or other detachable connection methods. The air inlet 110 is arranged on the bottom plate 130 and is located directly below the fan 310. The air inlet 110 can be formed by a plurality of air inlet holes arranged in a circular array on the bottom plate 130, and the arrangement range of the air inlet holes can be further increased so that the air inlet 110 can completely cover the projection of the fan 310 on the bottom plate 130, so that the air inlet 110 can cover the exhaust range of the fan 310. The air outlet 120 is arranged on the side of the bottom plate 130 and is evenly arranged. The air inlet 120 is directly opposite to the photocatalyst board 320. Multiple groups of photocatalyst boards 320 can be evenly arranged around the periphery of the fan 310. When a rectangular-structured housing 100 is adopted, the multiple groups of photocatalyst boards 320 are arranged in a corresponding rectangular array; it can also be as follows Figure 5 As shown, the photocatalyst plates 320 are arranged in multiple groups, and the air drawn into the housing 100 is purified by at least two groups of photocatalyst plates 320 and then discharged through the air outlet 120 .

[0028] Furthermore, in order to facilitate the installation of the photocatalyst air disinfection module, the utility model further optimizes the structure of the housing 100, by limiting the area of ​​the bottom plate 130 and the top cover 140, so that the area of ​​the top cover 140 is smaller than the area of ​​the bottom plate 130, and at the same time, a convex edge 141 extending horizontally outward is provided around the top cover 140, and the four peripheral portions of the bottom plate 130 are connected to the corresponding convex edges 141 to form a Figure 4 The limiting step shown. After adopting the above structure, the photocatalyst air disinfection module can be installed on the roof ceiling by embedding installation, and most of the structure of the shell 100 can be hidden in the ceiling, and the air inlet 110 and the air outlet 120 are exposed for air intake and exhaust, so as to reduce the overall space occupied by the shell 100 and improve the appearance. At the same time, by setting the limiting convex edge 141, on the basis of limiting the shell 100, it can assist in positioning during installation, and the gap at the installation location can be shielded and closed by the limiting convex edge 141.

[0029] like Figures 3 to 5 As shown, in the utility model, a fan bracket 330 is provided to install and fix the fan 310. The fan bracket 330 adopts a hollow bracket structure, and the fan bracket 330 is fixed in the inner cavity of the housing 100. The fan 310 is installed inside the fan bracket 330. A plurality of groups of photocatalyst plates 320 are arranged on the periphery of the fan bracket 330 and abut against the fan bracket 330. The air drawn into the housing 100 by the fan 310 directly passes through the hollow structure of the fan bracket 300 and can flow to the photocatalyst plate 320 for disinfection. The fan bracket 330 is also provided with a control mainboard 340 electrically connected to the fan 310 and the excitation light source 200. The operation of the excitation light source 200 and the fan 310 is controlled by the control mainboard 340; the control mainboard 340 is provided with a power interface, and the power interface can be connected to an external power supply for power transmission.

[0030] Furthermore, in order to reduce the heat inside the housing 100, the present invention further provides a heat sink 400, such as 2 to Figure 4 As shown, the heat sink 400 is fixed in the housing 100, and the excitation light source 200 is mounted on the heat sink 400; the heat sink 400 can be made of a metal material with good heat dissipation effect, such as an aluminum plate.

Claims

1. A photocatalyst air disinfection module, comprising a housing (100) having an inner cavity, an excitation light source (200) and a disinfection module (300) arranged inside the housing (100), the housing (100) being provided with an air inlet (110) and an air outlet (120) communicating with the inner cavity, characterized in that: The disinfection module (300) comprises a fan (310) and a plurality of groups of photocatalyst plates (320), wherein the fan (310) is fixed in the inner cavity of the housing (100), and the photocatalyst plates (320) are arranged between the fan (310) and the air outlet (120); the photocatalyst plates (320) are composed of at least two honeycomb plates with a plurality of ventilation holes arranged therethrough and arranged in an inclined manner; the photocatalyst plates (320) are coated with a photocatalyst, and each group of photocatalyst plates (320) is configured with at least one excitation light source (200), and the excitation light source (200) is located directly above the corresponding photocatalyst plate (320).

2. The photocatalyst air disinfection module according to claim 1, characterized in that: The housing (100) is a rectangular housing; a plurality of evenly arranged air outlets (120) are arranged on the four sides of the housing (100); the photocatalyst plates (320) are arranged in a rectangular array around the fan (310) and face the air outlets (120) on the same side; and the air inlet (110) is arranged at the bottom of the housing (100) and is located directly below the fan (310).

3. The photocatalyst air disinfection module according to claim 2, characterized in that: The ventilation holes on the photocatalyst plate (320) are oblique holes extending obliquely in the thickness direction of the honeycomb plate, and the ventilation holes are directly opposite to the air outlet (120) in the horizontal direction.

4. The photocatalyst air disinfection module according to claim 1, characterized in that: The invention also includes a fan bracket (330) fixed inside the housing (100), and the fan bracket (330) is a hollow structure; the fan (310) is installed inside the fan bracket (330), and a plurality of photocatalyst plates (320) are arranged on the periphery of the fan bracket (330) and abut against the fan bracket (330); the fan bracket (330) is also provided with a control main board (340) electrically connected to the fan (310) and the excitation light source (200), and a power supply interface is provided on the control main board (340).

5. The photocatalyst air disinfection module according to claim 1, characterized in that: The excitation light source (200) is a UVA ultraviolet light source with a wavelength range of 365 to 370 nm.

6. The photocatalyst air disinfection module according to claim 1, characterized in that: It also includes a heat dissipation plate (400), wherein the heat dissipation plate (400) is fixed in the housing (100), and the excitation light source (200) is mounted on the heat dissipation plate (400).

7. The photocatalyst air disinfection module according to claim 2, characterized in that: The housing (100) is composed of a bottom plate (130) and a top cover (140) that are detachably connected; the air inlet (110) is composed of a plurality of air inlet holes arranged in a circular array on the bottom plate (130), and the arrangement range of the air inlet holes covers the projection of the fan (310) on the bottom plate (130); and the air outlet (120) is arranged on the side of the bottom plate (130).

8. The photocatalyst air disinfection module according to claim 7, characterized in that: The area of ​​the top cover (140) is smaller than that of the bottom plate (130), and a convex edge (141) extending horizontally outward is provided on the periphery of the top cover (140), and the four peripheral edges of the bottom plate (130) are connected to the corresponding convex edges (141) to form a limiting step.

9. The photocatalyst air disinfection module according to claim 1, characterized in that: The structure of the photocatalyst plate (320) composed of the honeycomb plate includes a V-shaped structure, an inverted V-shaped structure, an N-shaped structure or a W-shaped structure.

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