A sterilizing and deodorizing device and a refrigeration equipment

Abstract

The application provides a sterilization and odor removal device and a refrigeration equipment. The sterilization and odor removal device comprises a light source, a first optical element and a second optical element. The first optical element and the second optical element are arranged at intervals, and the light source is arranged between the first optical element and the second optical element. The first optical element and the second optical element are configured to process light emitted by the light source into parallel light. The device further comprises a first photocatalytic module and a second photocatalytic module. The first photocatalytic module is arranged on a side of the first optical element opposite to the light source, and the parallel light processed by the first optical element is irradiated to the first photocatalytic module. The second photocatalytic module is arranged on a side of the second optical element opposite to the light source, and the parallel light processed by the second optical element is irradiated to the second photocatalytic module.

Description

Technical Field

[0001] This application relates to the field of electrical manufacturing technology, and in particular to a sterilization and deodorization device and a refrigeration equipment. Background Technology

[0002] A refrigerator is a common refrigeration device. Taking a refrigerator as an example, during actual use, due to the damp and cold environment, odors and microorganisms can persist for a long time, causing the smell inside the refrigerator to deteriorate, reducing the food preservation effect, and affecting the user experience. Utility Model Content

[0003] The main purpose of this application is to provide a sterilization and deodorization device and a refrigeration equipment, which aims to solve the technical problem that the long-term presence of odors and microbial growth leads to the deterioration of the odor inside the refrigeration equipment.

[0004] Firstly, a sterilization and deodorization device includes:

[0005] light source,

[0006] A first optical element and a second optical element are arranged at a distance from each other, and a light source is disposed between the first optical element and the second optical element; the first optical element and the second optical element are configured to process the light emitted by the light source into parallel light; and

[0007] A first photocatalytic module and a second photocatalytic module are provided. The first photocatalytic module is located on the side of the first optical element that is away from the light source, and parallel light processed by the first optical element is irradiated onto the first photocatalytic module. The second photocatalytic module is located on the side of the second optical element that is away from the light source, and parallel light processed by the second optical element is irradiated onto the second photocatalytic module.

[0008] Optionally, the distance between the light source and the first optical element is equal to the focal length of the first optical element; and / or the distance between the light source and the second optical element is equal to the focal length of the second optical element.

[0009] Optionally, the first optical element and the second optical element have the same structure; the distance between the light source and the first optical element is equal to the distance between the light source and the second optical element.

[0010] Optionally, the sterilization and deodorization device further includes a housing, and the light source, the first optical element, the second optical element, the first photocatalytic module and the second photocatalytic module are respectively disposed in the housing and / or connected to the housing.

[0011] Optionally, the sterilization and deodorization device has a first air outlet, which is positioned directly opposite the light source, and the first air outlet connects to a first space between the first optical element and the first photocatalytic module and a second space between the second optical element and the second photocatalytic module.

[0012] Optionally, the housing is provided with a first air inlet and a second air inlet arranged opposite to each other; the first photocatalytic module is located at the first air inlet, and the second photocatalytic module is located at the second air inlet;

[0013] The first space is connected to the first air inlet through a first channel on the first photocatalytic module; the second space is connected to the second air inlet through a second channel on the second photocatalytic module.

[0014] Optionally, the sterilization and deodorization device further includes a fan assembly, which includes an air duct structure and a fan; the fan is disposed within the air duct structure; the air duct structure has a first air outlet; and the air duct structure is connected to the housing.

[0015] Optionally, the duct structure further includes a second air outlet; the fan is adapted to draw in air from the first air outlet and discharge air from the second air outlet; the sterilization and deodorization device further includes an ion catalysis module disposed at the second air outlet.

[0016] Optionally, the first optical element and the second optical element are Fresnel lenses; and / or, the first photocatalytic module and the second photocatalytic module include carbon nanotubes.

[0017] Secondly, this application also proposes a refrigeration device, including the sterilization and deodorization device as described above.

[0018] In the technical solution of this application embodiment, gas enters the first photocatalytic module and the second photocatalytic module to improve the gas processing capacity of the sterilization and deodorization device per unit time; and a light source is disposed between the first optical element and the second optical element, so that the irradiated light is processed by the first optical element and the second optical element respectively through the spaced first optical element and the second optical element to obtain parallel light, thereby improving the space utilization rate of the internal structure of the sterilization and deodorization device; the parallel light processed by the first optical element irradiates the first photocatalytic module; the parallel light processed by the second optical element irradiates the second photocatalytic module. Compared with scattered light, the parallel light makes the light emitted by the light source act more on the photocatalytic module, improving the utilization rate of the light source, thereby improving the photocatalytic efficiency and thus improving the sterilization and deodorization effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the sterilization and deodorization device provided in the embodiments of this application;

[0021] Figure 2 A schematic diagram of the internal structure of the sterilization and deodorization device provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the optical path of the sterilization and deodorization device provided in the embodiments of this application;

[0023] Figure 4 Another internal structural schematic diagram of the sterilization and deodorization device provided in the embodiments of this application;

[0024] Figure 5 This is a cross-sectional structural schematic diagram of the sterilization and deodorization device provided in the embodiments of this application.

[0025] List of reference numerals

[0026] 10 Sterilization and deodorization device 420 Second air inlet 100 light source S1 First Space 210 First optical element S2 Second Space 220 Second optical element 500 wind turbine components 310 First photocatalytic module 510 air duct structure 311 First passage 520 Fan 320 Second photocatalytic module 511 Second air outlet 321 Second passage 512 First air outlet 400 Box S3 Air duct 410 First air inlet 600 Ion catalysis module Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] like Figure 1 As shown in the figure, this application provides a sterilization and deodorization device. Figure 1 A three-dimensional structural diagram of a sterilization and deodorization device is shown. Gas enters the first photocatalytic module through the first air inlet, undergoes sterilization and deodorization by the first photocatalytic module, and is then discharged through the second air outlet. Figure 1 In the middle, an ion catalytic module is also installed at the second air outlet. The ion catalytic module further ionizes the gas after the photocatalytic module, which can react with water molecules and oxygen molecules in the air to form and release a series of active particles, including electrons, positive ions, negative ions, hydrated ions, active oxygen, active nitrogen and other substances, thereby improving the sterilization and deodorization effect.

[0032] Specifically, refer to Figure 2 and Figure 3 As shown, this application provides a sterilization and deodorization device 10, comprising:

[0033] Light source 100,

[0034] A first optical element 210 and a second optical element 220 are spaced apart, and a light source 100 is disposed between the first optical element 210 and the second optical element 220; the first optical element 210 and the second optical element 220 are configured to process the light emitted by the light source 100 into parallel light; and

[0035] A first photocatalytic module 310 and a second photocatalytic module 320 are provided. The first photocatalytic module 310 is located on the side of the first optical element that is away from the light source 100, and parallel light processed by the first optical element 210 is irradiated onto the first photocatalytic module 310. The second photocatalytic module 320 is located on the side of the second optical element that is away from the light source 100, and parallel light processed by the second optical element 220 is irradiated onto the second photocatalytic module 320.

[0036] In the technical solution of this application embodiment, gas enters the first photocatalytic module 310 and the second photocatalytic module 320, improving the gas processing capacity of the sterilization and deodorization device 10 per unit time; and a light source 100 is disposed between the first optical element 210 and the second optical element 220, so that the irradiated light is processed by the first optical element 210 and the second optical element 220 respectively through the spaced first optical element 210 and the second optical element 220 to obtain parallel light, thereby improving the space utilization rate of the internal structure of the sterilization and deodorization device 10; the parallel light processed by the first optical element 210 irradiates the first photocatalytic module 310; the parallel light processed by the second optical element 220 irradiates the second photocatalytic module 320. Compared with scattered light, the parallel light allows more light emitted by the light source 100 to act on the photocatalytic module, improving the utilization rate of the light source 100, thereby improving the photocatalytic efficiency and thus improving the sterilization and deodorization effect.

[0037] When the sterilization and deodorization device 10 is applied in the storage room of refrigeration equipment, it can reduce the generation of odors and inhibit the growth of microorganisms, thereby improving the user experience and enhancing food safety.

[0038] In the embodiments, the materials of the first photocatalytic module 310 and the second photocatalytic module 320 include carbon nanotube-doped molecular sieve catalysts. For example, the molecular sieve catalyst contains a multi-metal combination, mainly composed of manganese copper oxide (Mn-Cu) and platinum (Pt), with added cerium oxide (Ce), silver (Ag), and TiO2 as the substrate; at the same time, the molecular sieve catalyst has dual supports, using cordierite ceramic and silica-alumina molecular sieve as supports. The molecular sieve and ceramic serve as dual supports for the active metals, which can improve the physical binding ability and dispersion of the catalyst and increase the reaction rate; the carbon nanotubes can be formed by rolling up graphene sheets. The p electrons of the carbon atoms on the carbon nanotubes form a large-scale delocalized π bond, with a significant conjugation effect, giving the carbon nanotubes excellent electronic conductivity, which can greatly enhance the oxidation activity of the catalyst under the photo-electric effect. At the same time, due to the barrel-shaped structure of the carbon nanotubes, compared with sheet graphene, it is more conducive to the diffusion and adsorption-desorption of odor gas molecules.

[0039] In other embodiments, the photocatalytic module can be made of carbon-based materials, porous mineral materials, polymer composite materials, or nanocatalytic materials, etc., wherein the carbon-based materials can be activated carbon, the porous mineral materials can be maifanite, and the polymer composite materials can be plant fiber composite materials.

[0040] In this embodiment, the first optical element and the second optical element 220 are Fresnel lenses. A Fresnel lens is a thin lens that achieves optical focusing through a stepped surface design. Its core principle is to "compress" the continuous curved surface of a traditional lens into a concentric ring prism structure, significantly reducing thickness and weight while maintaining optical performance. Please refer to [link to relevant documentation]. Figure 3 Fresnel lenses can convert light rays from multiple different angles into parallel rays, which can then be directed perpendicularly onto the photocatalytic module, thereby achieving high light utilization and thus high sterilization and deodorization efficiency.

[0041] In this embodiment, the first photocatalytic module 310, the first optical element 210, the light source 100, the second optical element 220, and the second photocatalytic module 320 are arranged sequentially at intervals. The light emitted by the light source 100 shines into the surrounding environment. After being processed by the first optical element 210 and the second optical element 220, the light becomes parallel light and shines on the first photocatalytic module 310 and the second photocatalytic module 320 respectively.

[0042] In some embodiments, the light source 100 may include a plurality of LEDs or a lamp tube. In some embodiments, to improve the sterilization effect, the light source 100 uses typical 254nm wavelength ultraviolet light. Ultraviolet light has a good sterilization effect. Furthermore, the parallel ultraviolet light beams form an ultraviolet light curtain, which significantly improves the sterilization effect. The light source 100 may use other ultraviolet bands such as 100-400nm, including UVA / UVB / UVC.

[0043] In an embodiment, the sterilization and deodorization device 10 further includes a power supply or an energy conversion device (not illustrated). The power supply is configured to provide electrical energy to the light source 100; or the energy conversion device is configured to convert electrical energy from an external power source into electrical energy usable by the light source 100.

[0044] As an optional implementation of the above embodiments, Figure 3 As shown, the distance f1 between the light source 100 and the first optical element 210 is equal to the focal length of the first optical element 210; and / or the distance f2 between the light source 100 and the second optical element 220 is equal to the focal length of the second optical element 220. In an embodiment, the light source 100 is disposed at the focal point of the first optical element 210 and / or the second optical element 220, which can illuminate most of the light parallel to the first photocatalytic block and / or the second photocatalytic block, thereby improving the light utilization rate and thus improving the efficiency of sterilization and deodorization.

[0045] As an optional implementation of the above embodiments, the first optical element 210 and the second optical element 220 have the same structure; the distance between the light source 100 and the first optical element 210 is equal to the distance between the light source 100 and the second optical element 220. That is, the first optical element 210 and the second optical element 220 have the same optical parameters; at this time, the distance from the light source 100 to the first optical element 210 and the second optical element 220 is the same, that is, the focal length of the first optical element 210 and the second optical element 220 can illuminate most of the light parallel to the first photocatalytic block and the second photocatalytic block, thereby improving the light utilization rate and thus improving the efficiency of sterilization and deodorization.

[0046] As an optional implementation of the above embodiments, such as Figure 2As shown, the sterilization and deodorization device 10 further includes a housing 400. The light source 100, the first optical element 210, the second optical element 220, the first photocatalytic module 310, and the second photocatalytic module 320 are respectively disposed within the housing 400 and / or connected to the housing 400. In an embodiment, the housing 400 provides a sterilization and deodorization space for the gas; the light source 100, the first optical element 210, the second optical element 220, the first photocatalytic module 310, and the second photocatalytic module 320 can be disposed within the housing 400 and / or connected to the housing 400 by adhesive, snap-fit, or threaded connection.

[0047] As an optional implementation of the above embodiments, Figure 5 As shown, the sterilization and deodorization device 10 has a first air outlet 512, which is positioned directly opposite the light source 100. The first air outlet 512 connects to a first space S1 between the first optical element 210 and the first photocatalytic module 310, and a second space S2 between the second optical element 220 and the second photocatalytic module 320. In this embodiment, the gas treated by the first photocatalytic module 310 passes through the first space S1 and exits through the first air outlet 512, while the gas treated by the second photocatalytic module 320 passes through the second space S2 and exits through the first air outlet 512. Since the light source 100 is positioned directly opposite the first air outlet 512, and the first space S1 and the second space S2 share a single air outlet, the internal structural space of the sterilization and deodorization device 10 is fully utilized. This helps to reduce the size of the sterilization and deodorization device 10 and facilitates its application in refrigeration equipment, such as reducing the space occupied in the refrigerator compartment.

[0048] In an embodiment, the first air outlet 512 may be a structure on the housing 400.

[0049] As an optional implementation of the above embodiments, such as Figure 5 As shown, the housing 400 is provided with a first air inlet 410 and a second air inlet 420 arranged opposite to each other; the first photocatalytic module 310 is located at the first air inlet 410, and the second photocatalytic module 320 is located at the second air inlet 420; wherein, the first space S1 is connected to the first air inlet 410 through a first channel 311 on the first photocatalytic module 310; the second space S2 is connected to the second air inlet 420 through a second channel 321 on the second photocatalytic module 320.

[0050] In this embodiment, the gas enters the first photocatalytic module 310 and the second photocatalytic module 320 through the first air inlet 410 and the second air inlet 420, respectively. When passing through the channels on the first photocatalytic module 310 and the second photocatalytic module 320, the gas is sterilized and deodorized. The treated gas then enters the first space S1 and the second space S2, respectively, and is subsequently discharged through the first air outlet 512.

[0051] In this embodiment, the pore is a gas channel on the photocatalytic module, which connects the outside world and the interior of the sterilization and deodorization device 10.

[0052] As an optional implementation of the above embodiments, such as Figure 4 As shown, the sterilization and deodorization device 10 further includes a fan assembly 500, which includes an air duct structure 510 and a fan 520. The fan 520 is disposed within the air duct structure 510. The air duct structure 510 has a first air outlet 512. The air duct structure 510 is connected to the housing 400. In an embodiment, when the fan 520 is started, gas enters the first photocatalytic module 310 and the second photocatalytic module 320 through the first air inlet 410 and the second air inlet 420. The gas is sterilized and deodorized when passing through the channels on the first photocatalytic module 310 and the second photocatalytic module 320. The treated gas then enters the first space S1 and the second space S2 respectively, and is subsequently discharged into the air duct structure 510 through the first air outlet 512.

[0053] In this embodiment, the air duct structure 510 is connected to the housing 400. For example... Figure 5 As shown, the air duct structure 510 forms an air duct S3, which is connected to the first space S1 and the second space S2 via the first air outlet 512. A fan 520 is located in the air duct S3, and when it is started, it draws external air into the sterilization and deodorization device 10. The fan assembly 500 also includes a cover plate, which is connected to the air duct structure 510 and / or the housing 400 to seal the first space S1 and the second space S2.

[0054] In some embodiments, the air duct structure 510 and the housing 400 can be connected by snap-fit, threaded connection, or ultrasonic welding. When connected, the joint can also be sealed using sealing conditions. In some embodiments, to facilitate the installation of the first photocatalytic module 310, the first optical element 210, the light source 100, the second optical element 220, and the second photocatalytic module 320; combined with... Figure 1 and 2 As shown, the housing 400 is open, and the fan assembly 500 is placed over the open, while the first photocatalytic module 310, the first optical element 210, the light source 100, the second optical element 220 and the second photocatalytic module 320 are sealed inside.

[0055] As an optional implementation of the above embodiments, such as Figure 1 and Figure 4 As shown, the air duct structure 510 also has a second air outlet 511; the fan 520 is adapted to draw in air from the first air outlet 512 and discharge air from the second air outlet 511; the sterilization and deodorization device 10 also includes an ion catalysis module 600, which is disposed at the second air outlet 511.

[0056] Under the action of the fan 520, the gas treated by the first photocatalytic module 310 and the second photocatalytic module 320 enters the air duct structure 510 through the first air outlet 512 and is then discharged through the second air outlet 511, bringing the active substances generated by ion catalysis to the external environment (such as the storage room of the refrigeration equipment), which can expand the range of action of the active substances and thus achieve a better sterilization and deodorization effect on the external environment.

[0057] The ion catalytic module 600 can generate a large number of ions (such as positive ions and negative ions) and active particles (such as oxygen ions and hydroxyl radicals) through high-voltage discharge or corona discharge. These particles have high reactivity and can undergo forced oxidation-reduction reactions with microorganisms and organic pollutants in the air, destroying their molecular structure and thus achieving sterilization and deodorization effects. In this embodiment, by placing the ion catalytic module 600 at the second air outlet 511, the active substances generated by ion catalysis can be carried to the external environment (such as the storage compartment of a refrigerated device) by the flow of air, which can expand the range of action of the active substances and thus achieve better sterilization and deodorization effects on the external environment.

[0058] Please see Figure 1 The ion catalysis module 600 includes a discharge electrode. The surface of the discharge electrode is coated with a catalytic coating. The power supply for the ion catalysis module 600 can be the same as that for the light source 100. Alternatively, the ion catalysis module 600 can share the same power source as the power conversion device for the light source 100. Of course, the ion catalysis module 600 and the light source 100 can also be different light sources 100 or different power conversion devices.

[0059] It should be noted that when a high voltage is applied to the discharge electrode, a high voltage electric field is formed near the discharge electrode. This high voltage electric field can interact with water molecules and oxygen molecules in the air to form and release a series of active particles, such as electrons, positive ions, negative ions, hydrated ions, reactive oxygen species, and reactive nitrogen species, thereby achieving sterilization and deodorization effects. Furthermore, by setting a catalytic coating on the surface of the discharge electrode, an ion catalytic reaction can be triggered in the catalytic coating simultaneously with the generation of ions during discharge, further enhancing the sterilization and deodorization effects. For example, the catalytic coating may include TiO2-based noble metal materials, ZnO / Al₂O₃ / SiO₂, etc.

[0060] In some embodiments, the ion catalysis module 600 further includes a counter electrode.

[0061] In some embodiments, the discharge mode of the ion catalysis module 600 can be tip discharge, needle plate discharge, or carbon brush discharge.

[0062] In some embodiments, when the discharge mode of the ion catalysis module 600 is needle tip discharge, the discharge electrode is a single needle electrode (or a small number of isolated needle electrodes), and the counter electrode is a flat electrode or a curved electrode. The needle electrodes have extremely high curvature and are concentrated in a "point" shape.

[0063] In some embodiments, when the discharge mode of the ion catalysis module 600 is needle-plate discharge, the discharge electrode includes multiple needle-shaped electrodes (needle-shaped electrodes arranged in an array, or needle-shaped electrodes arranged in multiple rows or columns), and the counter electrode is a flat electrode or a curved electrode, with the needle tips arranged in an orderly manner to form a "multiple needle tips → flat plate" layout.

[0064] In some embodiments, when the discharge mode of the ion catalysis module 600 is carbon brush discharge, the discharge electrode includes multiple densely arranged brush-shaped fine conductors (carbon wires / metal wires), and the counter electrode is a flat plate electrode or a cylindrical electrode, exhibiting a "volume / surface" distributed structure without obvious sharp single points.

[0065] This application also proposes a refrigeration device, including the sterilization and deodorization device 10 as described above.

[0066] Optionally, the refrigeration equipment may be a refrigerator, freezer, beverage cooler, wine cooler, freezer box, ice cream machine, ice maker, air conditioner, etc.

[0067] Optionally, the refrigeration equipment includes a refrigerator; the refrigerator includes an inner liner, and the inner liner has a storage compartment, the storage compartment being equipped with the sterilization and deodorization device 10. Optionally, the storage compartment includes a refrigerator compartment and a freezer compartment, the refrigerator compartment being equipped with the sterilization and deodorization device 10, and / or the freezer compartment being equipped with the sterilization and deodorization device 10. In an embodiment, the air in the refrigerator compartment passes through the first photocatalytic module 310 and the second photocatalytic module 320, and after sterilization and deodorization, it is discharged back into the refrigerator compartment.

[0068] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A sterilization and deodorization device, characterized in that, include: light source, A first optical element and a second optical element are arranged at a distance from each other, and the light source is disposed between the first optical element and the second optical element; the first optical element and the second optical element are configured to process the light emitted by the light source into parallel light; and A first photocatalytic module and a second photocatalytic module are provided. The first photocatalytic module is located on the side of the first optical element that is away from the light source, and parallel light processed by the first optical element is irradiated onto the first photocatalytic module. The second photocatalytic module is located on the side of the second optical element that is away from the light source, and parallel light processed by the second optical element is irradiated onto the second photocatalytic module.

2. The sterilization and deodorization device as described in claim 1, characterized in that, The distance between the light source and the first optical element is equal to the focal length of the first optical element; and / or the distance between the light source and the second optical element is equal to the focal length of the second optical element.

3. The sterilization and deodorization device as described in claim 2, characterized in that, The first optical element and the second optical element have the same structure; the distance between the light source and the first optical element is equal to the distance between the light source and the second optical element.

4. The sterilization and deodorization device according to any one of claims 1 to 3, characterized in that, The sterilization and deodorization device also includes a housing, and the light source, the first optical element, the second optical element, the first photocatalytic module and the second photocatalytic module are respectively disposed in the housing and / or connected to the housing.

5. The sterilization and deodorization device as described in claim 4, characterized in that, The sterilization and deodorization device has a first air outlet, which is positioned directly opposite the light source, and the first air outlet connects to a first space between the first optical element and the first photocatalytic module and a second space between the second optical element and the second photocatalytic module.

6. The sterilization and deodorization device as described in claim 5, characterized in that, The housing is provided with a first air inlet and a second air inlet arranged opposite to each other; the first photocatalytic module is located at the first air inlet, and the second photocatalytic module is located at the second air inlet; The first space is connected to the first air inlet through a first channel on the first photocatalytic module; the second space is connected to the second air inlet through a second channel on the second photocatalytic module.

7. The sterilization and deodorization device as described in claim 5 or 6, characterized in that, The sterilization and deodorization device further includes a fan assembly, which includes an air duct structure and a fan; the fan is disposed within the air duct structure; the air duct structure has a first air outlet; the air duct structure is connected to the housing.

8. The sterilization and deodorization device as described in claim 7, characterized in that, The air duct structure also has a second air outlet; the fan is adapted to draw in air from the first air outlet and exhaust air from the second air outlet; the sterilization and deodorization device also includes an ion catalysis module, which is disposed at the second air outlet.

9. The sterilization and deodorization device as described in claim 1, characterized in that, The first optical element and the second optical element are Fresnel lenses; and / or, the first photocatalytic module and the second photocatalytic module include carbon nanotubes.

10. A refrigeration device, characterized in that, Includes the sterilization and deodorization device according to any one of claims 1-9.

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