Bactericidal and deodorizing device and refrigeration equipment

Abstract

The application provides a sterilization and odor removal device and a refrigeration equipment. The sterilization and odor removal device comprises a box body, a light source and a photocatalysis module. The box body comprises a first inner cavity. The light source and the photocatalysis module are arranged in the first inner cavity. A reflective film layer is arranged on the inner wall of the first inner cavity. Light emitted by the light source can converge on the photocatalysis module after being reflected by the reflective film layer. The sterilization and odor removal device provided by the application can generate strong oxidation-reduction capacity under light conditions, thereby achieving the sterilization and odor removal effect. The photocatalysis efficiency can be improved by arranging the reflective film layer on the inner wall of the first inner cavity, thereby improving the sterilization and odor removal effect. When the sterilization and odor removal device is applied to the storage compartment of the refrigeration equipment, the generation of peculiar smell and the breeding of microorganisms can be reduced, thereby improving the user experience and improving the food safety.

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] With the development of refrigeration technology, refrigerators have become essential equipment for storing food in homes and businesses, delaying food spoilage by controlling the low-temperature environment. However, in actual use, the generation of odors and the growth of microorganisms are persistent problems. These not only lead to a deterioration of the odor inside the refrigerator, affecting the user experience, but may also cause cross-contamination of food, reduce the freshness of ingredients, and even pose potential threats to human health due to excessive microorganisms (such as causing gastrointestinal infections). Utility Model Content

[0003] Based on this, embodiments of this application provide a sterilization and deodorization device and a refrigeration equipment.

[0004] In a first aspect, embodiments of this application provide a sterilization and deodorization device, including a housing, a light source, and a photocatalytic module. The housing includes a first inner cavity, and both the light source and the photocatalytic module are disposed in the first inner cavity. A reflective film layer is provided on the inner wall of the first inner cavity, and the light emitted from the light source can be focused onto the photocatalytic module after being reflected by the reflective film layer.

[0005] In some embodiments, the inner wall of the first cavity is curved.

[0006] In some embodiments, the first inner cavity is ellipsoidal or part of an ellipsoid; the light source and the photocatalytic module are respectively located at the two foci of the ellipsoid.

[0007] In some embodiments, the periphery of the photocatalytic module is embedded in the inner wall of the first inner cavity; and / or,

[0008] The light source is fixed to the housing via a connector.

[0009] In some embodiments, the reflective film layer includes a reflective layer, a protective layer, and a self-cleaning coating stacked sequentially, wherein the reflective layer is disposed in conform to the inner wall of the first inner cavity.

[0010] In some embodiments, the housing is provided with an air inlet and an air outlet, the photocatalytic module is disposed in the housing, and the photocatalytic module is disposed between the air inlet and the air outlet in the gas flow path. The photocatalytic module is provided with multiple hollow parts, and the housing is also provided with a fan, which is disposed near the air outlet.

[0011] In some embodiments, the housing further includes a second inner cavity, in which the fan is disposed, and the first inner cavity and the second inner cavity are connected by an air outlet, the air outlet being disposed on the air inlet side of the fan and connected to the second inner cavity.

[0012] In some embodiments, the sterilization and deodorization device further includes an ion catalysis module, which is installed on the housing and located at the air outlet.

[0013] In some embodiments, the ion catalysis module includes a discharge electrode, the surface of which is provided with a catalytic coating.

[0014] Secondly, embodiments of this application provide a refrigeration device, including the sterilization and deodorization device described above.

[0015] The sterilization and deodorization device provided in this application embodiment has a photocatalytic module that generates strong oxidation-reduction capabilities under light irradiation. Through a series of chemical reactions, it decomposes and destroys bacteria, viruses, and odor molecules, thereby achieving the effect of sterilization and deodorization. By setting a reflective film layer on the inner wall of the first inner cavity, the light emitted from the light source can be focused onto the photocatalytic module after being reflected by the reflective film layer, thereby improving the photocatalytic efficiency and thus enhancing the sterilization and deodorization effect. When this sterilization and deodorization device 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. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional structural diagram of the sterilization and deodorization device provided in the embodiments of this application.

[0018] Figure 2 for Figure 1 A top-view diagram of the sterilization and deodorization device.

[0019] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the structure along the AA direction.

[0020] Figure 4 This is a schematic diagram of the light transmission path in the sterilization and deodorization device provided in the embodiments of this application.

[0021] Component symbol explanation:

[0022] 100. Sterilization and deodorization device; 20. Photocatalytic module; 21. Hollowed-out part; 31. Light source; 32. Connector; 40. Box body; 41. First inner cavity; 42. Second inner cavity; 43. Power module; 401. Air inlet; 402. Air outlet; 403. Air outlet; 51. Fan; 52. Ion catalytic module; 521. Discharge electrode; 60. Reflective film layer. Detailed Implementation

[0023] 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions 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 one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] Please see Figures 1 to 3 This application provides a sterilization and deodorization device 100, including a housing 40, a light source 31, and a photocatalytic module 20. The housing 40 includes a first inner cavity 41, and the light source 31 and the photocatalytic module 20 are both disposed in the first inner cavity 41. A reflective film layer 60 is provided on the inner wall of the first inner cavity 41, and the light emitted from the light source 31 can be focused onto the photocatalytic module 20 after being reflected by the reflective film layer 60.

[0029] For example, the light source 31 can be a lamp bead or a lamp tube, and the light emitted by the light source 31 is ultraviolet light. For example, the wavelength of the ultraviolet light is 100-400nm, such as 254nm.

[0030] For example, the reflective film layer 60 has a reflectivity of 80% or greater to ultraviolet light.

[0031] For example, the photocatalytic module 20 is made of carbon nanotube-doped molecular sieve catalyst. For example, the molecular sieve catalyst comprises 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. Simultaneously, the molecular sieve catalyst has dual supports, using cordierite ceramic and silica-alumina molecular sieves as supports. The molecular sieve and ceramic serve as dual supports for the active metals, enhancing the physical bonding and dispersion of the catalyst and increasing the reaction rate. The carbon nanotubes can be considered as graphene sheets rolled up. The p electrons of the carbon atoms on the carbon nanotubes form a large-scale delocalized π bond, exhibiting a significant conjugation effect, giving the carbon nanotubes excellent electronic conductivity. This significantly enhances the oxidation activity of the catalyst under photo-electric effects. Furthermore, due to the barrel-shaped structure of the carbon nanotubes, compared to sheet-like graphene, it is more conducive to the diffusion and adsorption / desorption of odor gas molecules.

[0032] In other embodiments, the material of the photocatalytic module 20 can be carbon-based material, porous mineral material, polymer composite material or nanocatalytic material, etc., wherein the carbon-based material can be activated carbon, the porous mineral material can be maifanite, and the polymer composite material can be plant fiber composite material.

[0033] The sterilization and deodorization device 100 provided in this application embodiment has a photocatalytic module 20 that can generate strong oxidation-reduction capabilities under light irradiation. Through a series of chemical reactions, it decomposes and destroys bacteria, viruses, and odor molecules, thereby achieving the effect of sterilization and deodorization. By setting a reflective film layer 60 on the inner wall of the first inner cavity 41, the light emitted from the light source 31 can be focused onto the photocatalytic module 20 after being reflected by the reflective film layer 60, thereby improving the photocatalytic efficiency and thus improving the sterilization and deodorization effect. When the sterilization and deodorization device 100 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.

[0034] For example, the inner wall of the first inner cavity 41 is a curved surface, such as a parabola, a spherical surface, or an ellipsoidal surface.

[0035] Please see Figure 2 and Figure 3 In some embodiments, the first inner cavity 41 is ellipsoidal or part of an ellipsoid; the light source 31 and the photocatalytic module 20 are respectively located at the two foci of the ellipsoid.

[0036] Please see Figure 4 As can be seen, when the light source 31 and the photocatalytic module 20 are located at the two foci of the ellipsoid, the light emitted from the light source 31 can be almost entirely focused onto the photocatalytic module 20 after being reflected by the reflective film layer 60 on the surface of the ellipsoid. This maximizes the light utilization rate, enhances the photocatalytic effect, and thus achieves a better sterilization and deodorization effect.

[0037] For example, the geometric center of the photocatalytic module 20 coincides with one focus of an ellipsoid, and the geometric center of the light source 31 coincides with the other focus of an ellipsoid.

[0038] For example, the photocatalytic module 20 may be in the shape of a circular plate, and the geometric center of the photocatalytic module 20 is the center of its cross-section.

[0039] Please see Figure 3 For example, the periphery of the photocatalytic module 20 is embedded in the inner wall of the first inner cavity 41.

[0040] Please see Figure 3For example, the light source 31 is fixed to the housing 40 by a connector 32.

[0041] For example, the connector 32 may be in the form of a line or a rod. In some embodiments, the end of the connector 32 facing away from the light source 31 is connected to the top wall of the first inner cavity 41.

[0042] For example, the reflective film layer 60 includes a reflective layer, a protective layer and a self-cleaning coating stacked in sequence, wherein the reflective layer is disposed in conform to the inner wall of the first inner cavity 41.

[0043] For example, the reflective layer has a reflectivity of 90% or greater for ultraviolet light.

[0044] For example, the material of the reflective layer includes a metal, such as aluminum. It is understood that metals have a high reflectivity, thus providing a better reflective effect.

[0045] It should be noted that the protective layer protects the reflective layer while maintaining high ultraviolet transmittance (over 90%), meaning the protective layer does not affect the reflective properties of the reflective film layer 60. For example, the material of the protective layer includes silicon dioxide.

[0046] It should be noted that the self-cleaning layer is located on the outermost layer of the reflective film layer 60, and it can directly contact environmental pollutants. The self-cleaning layer has hydrophobic properties, which can prevent water stains and dust from adhering, thus maintaining the surface cleanliness of the reflective film layer 60 and achieving a maximum self-cleaning effect. Furthermore, the self-cleaning coating has a high ultraviolet transmittance (over 90%), so it will not affect the reflective performance of the reflective film layer 60. For example, the material of the self-cleaning coating includes fluorosilane.

[0047] For example, a dielectric film may be disposed between the reflective layer and the protective layer to further enhance the reflectivity of the reflective film layer 60. The material of the dielectric film is an optically transparent medium, such as silicon dioxide, magnesium fluoride, barium titanate, etc.

[0048] Please see Figure 1 and Figure 3 For example, the housing 40 is provided with an air inlet 401 and an air outlet 402. The photocatalytic module 20 is disposed inside the housing 40. The photocatalytic module 20 is disposed between the air inlet 401 and the air outlet 402 in the gas flow path. The photocatalytic module 20 is provided with a plurality of hollow parts 21. The housing 40 is also provided with a fan 51, which is disposed near the air outlet 402.

[0049] It is understood that the perforated portion 21 can allow gas flow, so that the gas entering from the air inlet 401 can pass through the perforated portion 21 to the other side of the photocatalytic module 20. By setting the air inlet 401 and the air outlet 402 on the housing 40, and setting the fan 51 inside the housing 40 so that the fan 51 is close to the air outlet 402, the ventilation effect of the fan 51 can be used to promote the exchange of air inside the sterilization and deodorization device 100 with the air in the external environment (such as the storage room of the refrigeration equipment), and bring the active substances generated by photocatalysis to the external environment, which can expand the range of action of the active substances, thereby achieving a better sterilization and deodorization effect on the external environment.

[0050] Please see Figure 3 See also Figure 1 For example, the housing 40 further includes a second inner cavity 42, in which the fan 51 is provided. The first inner cavity 41 and the second inner cavity 42 are connected by an air outlet 403, which is provided on the air inlet side of the fan 51. The air outlet 402 is connected to the second inner cavity 42.

[0051] For example, the second inner cavity 42 is disposed above the first inner cavity 41, and the volume of the second inner cavity 42 is smaller than the volume of the first inner cavity 41.

[0052] For example, the fan 51 is mounted on the top wall of the second inner cavity 42.

[0053] Understandably, the second inner cavity 42 is equivalent to the fan chamber, which can accommodate, limit, and fix the fan 51.

[0054] Please see Figure 1 For example, the sterilization and deodorization device 100 further includes an ion catalysis module 52, which is installed on the housing 40 and located at the air outlet 402.

[0055] It should be noted that the ion catalysis module 52 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 catalysis module 52 at the air outlet 402, the active substances generated by ion catalysis can be carried to the external environment (such as the storage compartment of a refrigeration unit) 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.

[0056] Please see Figure 1For example, the ion catalysis module 52 includes a discharge electrode 521, the surface of which is provided with a catalytic coating.

[0057] It should be noted that when a high voltage is applied to the discharge electrode 521, a high-voltage electric field is formed near the discharge electrode 521. 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, active oxygen, and active nitrogen, thereby achieving sterilization and deodorization effects. Furthermore, by providing a catalytic coating on the surface of the discharge electrode 521, an ion catalytic reaction can be triggered in the catalytic coating simultaneously with the generation of ions by the discharge electrode 521, further enhancing the sterilization and deodorization effects. For example, the catalytic coating may include TiO2-based noble metal materials, ZnO / Al2O3 / SiO2, etc.

[0058] For example, the ion catalysis module 52 also includes a counter electrode.

[0059] For example, the discharge mode of the ion catalysis module 52 can be needle tip discharge, needle plate discharge or carbon brush discharge.

[0060] When the discharge mode of the ion catalysis module 52 is needle tip discharge, the discharge electrode 521 is a single needle-shaped electrode (or a small number of isolated needle-shaped electrodes), and the counter electrode is a flat plate electrode or a curved electrode. The curvature of the needle-shaped electrode is extremely large, and it is concentrated in a "point" shape.

[0061] When the discharge mode of the ion catalysis module 52 is needle-plate discharge, the discharge electrode 521 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.

[0062] When the discharge mode of the ion catalysis module 52 is carbon brush discharge, the discharge electrode 521 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, with a "volume / surface" distributed structure and no obvious sharp single point.

[0063] Please see Figure 1 and Figure 3 For example, the sterilization and deodorization device 100 also includes a power module 43, which is installed on the housing 40. The discharge electrode 521 of the ion catalysis module 52 and the light source 31 are both connected to the power module 43.

[0064] It is understood that the power module 43 can provide power to the light source 31 and the discharge electrode 521 of the ion catalysis module 52.

[0065] For example, the power module 43 is disposed on the top of the housing 40.

[0066] This application embodiment also provides a refrigeration device, including the sterilization and deodorization device 100 as described above.

[0067] For example, the refrigeration equipment can be a refrigerator, freezer, beverage cooler, wine cooler, freezer box, ice cream machine, ice maker, etc.

[0068] For example, the refrigeration equipment includes a cabinet 40, a storage room is provided inside the cabinet 40, and the sterilization and deodorization device 100 is provided inside the storage room.

[0069] For example, the storage room includes a refrigerator compartment and a freezer compartment, the refrigerator compartment is provided with the sterilization and deodorization device 100, and / or the freezer compartment is provided with the sterilization and deodorization device 100.

[0070] For example, the temperature of the refrigerator compartment is 2℃ to 8℃, such as 2℃, 3℃, 4℃, 5℃, 6℃, 7℃, 8℃, etc.

[0071] For example, the temperature of the freezer compartment is -18℃ to -25℃, such as -18℃, -19℃, -20℃, -21℃, -22℃, -23℃, -24℃, -25℃, etc.

[0072] The sterilization and deodorization device and refrigeration equipment provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A sterilization and deodorization device, characterized in that, The device includes a housing, a light source, and a photocatalytic module. The housing includes a first inner cavity, in which both the light source and the photocatalytic module are disposed. A reflective film is provided on the inner wall of the first inner cavity, so that light emitted from the light source can be focused onto the photocatalytic module after being reflected by the reflective film.

2. The sterilization and deodorization device according to claim 1, characterized in that, The inner wall of the first cavity is curved.

3. The sterilization and deodorization device according to claim 2, characterized in that, The first inner cavity is ellipsoidal or part of an ellipsoid; the light source and the photocatalytic module are located at the two foci of the ellipsoid, respectively.

4. The sterilization and deodorization device according to claim 2, characterized in that, The periphery of the photocatalytic module is embedded in the inner wall of the first inner cavity; and / or, The light source is fixed to the housing via a connector.

5. The sterilization and deodorization device according to claim 1, characterized in that, The reflective film layer includes a reflective layer, a protective layer, and a self-cleaning coating layer stacked sequentially, wherein the reflective layer is disposed in accordance with the inner wall of the first inner cavity.

6. The sterilization and deodorization device according to any one of claims 1-5, characterized in that, The housing is provided with an air inlet and an air outlet. The photocatalytic module is disposed inside the housing. The photocatalytic module is positioned between the air inlet and the air outlet in the gas flow path. The photocatalytic module is provided with multiple hollow parts. The housing is also provided with a fan, which is located near the air outlet.

7. The sterilization and deodorization device according to claim 6, characterized in that, The housing also includes a second inner cavity, in which the fan is disposed. The first inner cavity and the second inner cavity are connected by an air outlet, which is provided on the air inlet side of the fan and is connected to the second inner cavity.

8. The sterilization and deodorization device according to claim 7, characterized in that, The sterilization and deodorization device also includes an ion catalysis module, which is installed on the housing and located at the air outlet.

9. The sterilization and deodorization device according to claim 8, characterized in that, The ion catalysis module includes a discharge electrode, the surface of which is provided with a catalytic coating.

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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