Refrigeration appliance and method for producing a purification layer for a refrigeration appliance

Abstract

The application relates to the technical field of refrigeration equipment, and provides a refrigeration equipment and a preparation method of a purification layer of the refrigeration equipment. The refrigeration equipment comprises a box body and a door body. The door body is arranged on the box body in an openable and closable mode, and is used for opening or closing the box body. A purification layer for odor purification is coated on the inner surface of at least one of the box body and the door body. The purification layer for odor purification is coated on the inner surface of at least one of the box body and the door body, so that the distribution area of the odor purification component is increased, the odor purification effect is effectively improved, a sterilization module can be avoided, the appearance of the refrigeration equipment is optimized, the manufacturing is simple, and the production cost of the refrigeration equipment can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to a refrigeration equipment and a method for preparing a purification layer for the refrigeration equipment. Background Technology

[0002] Refrigeration equipment can effectively sterilize, remove odors, and purify the air while preserving food. Related technologies incorporate a sterilization module inside the refrigeration equipment. This module includes a housing and sterilization components housed within it. The housing comprises an open-end box and a detachable cover with ventilation holes. The sterilization components consist of tourmaline distributed in blocks, with nano-silver coated on their surface. This sterilization module aims to address the problem of bacterial growth within the refrigeration equipment. However, due to the large internal space of the refrigeration equipment, the sterilization module's size is limited, resulting in less effective sterilization and odor removal. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application provides a refrigeration device that can increase the distribution area of ​​the odor-removing components, effectively improving the odor-removing effect; at the same time, it can avoid the design of a sterilization module, thereby optimizing the appearance of the refrigeration device; it is simple to manufacture and can effectively reduce the production cost of the refrigeration device.

[0004] This application also provides a method for preparing a purification layer in a refrigeration device.

[0005] The refrigeration device provided according to the embodiments of this application includes:

[0006] Box;

[0007] A door, which is closable and can be installed on the housing to open or close the housing;

[0008] At least one of the housing and the door has an interior surface coated with a purifying layer for odor removal.

[0009] According to the embodiments of the present application, the refrigeration equipment increases the distribution area of ​​the odor-removing components by coating at least one interior surface of the cabinet and door with a purification layer for odor removal, thereby effectively improving the odor removal effect; at the same time, it can avoid setting up a sterilization module, thus optimizing the appearance of the refrigeration equipment; it is simple to manufacture and can effectively reduce the production cost of the refrigeration equipment.

[0010] According to one embodiment of this application, the purification layer includes:

[0011] The base layer is suitable for application onto the interior surface of the housing or the door;

[0012] The purification section has one part embedded in the base layer and another part protruding from the surface of the base layer, for the purpose of odor removal by the refrigeration equipment.

[0013] According to one embodiment of this application, the height of the purification unit embedded in the base layer is 35%-65% of the thickness of the base layer.

[0014] According to one embodiment of this application, the base layer is composed of a polymer compound; the purification section is composed of minerals with purification function.

[0015] According to one embodiment of this application, the base layer includes at least one selected from polyurethane, polyacrylate, epoxy resin, phenolic resin, and urea-formaldehyde resin.

[0016] According to one embodiment of this application, the purification section includes at least one of tourmaline, attapulgite, and vermiculite.

[0017] According to one embodiment of this application, the form of the purification layer coating on the interior surface of the enclosure includes any of the following:

[0018] The purification layer is coated on any one of the inner wall surfaces of the enclosure;

[0019] The inner wall of the enclosure is equipped with an air duct cover, and the surface of the air duct cover is coated with the purification layer.

[0020] The interior of the cabinet is configured to form a refrigeration chamber, which is provided with at least one of a shelf, a heat insulation board, and a drawer. The surface of at least one of the shelf, the heat insulation board, and the drawer is coated with the purification layer.

[0021] A method for preparing a purification layer for a refrigeration device according to an embodiment of this application includes the following steps:

[0022] Minerals with purifying properties are added to an organic solvent and ground to obtain a suspension;

[0023] A solid polymer compound is added to the suspension, and the suspension is heated to completely dissolve the polymer compound to obtain a mixed solution.

[0024] Spray the mixed solution onto at least one surface of the housing and door;

[0025] The box or door coated with the mixed solution is dried to evaporate the organic solvent, resulting in a mineral-protruding purification layer with purification function.

[0026] According to the method for preparing the purification layer of the refrigeration equipment provided in the embodiments of this application, a mixed solution is prepared and then coated on at least one interior surface in the cabinet and door to form a purification layer, thereby increasing the distribution area of ​​the odor-removing components and effectively improving the odor-removing effect; at the same time, it can avoid setting up a sterilization module, thus optimizing the appearance of the refrigeration equipment; it is simple to manufacture and can effectively reduce the production cost of the refrigeration equipment.

[0027] According to one embodiment of this application, the mass ratio of the purifying minerals, polymers and organic solvents in the mixed solution is 1:(1-3):(10-30).

[0028] According to one embodiment of this application, a box or door coated with a mixed solution is dried at the boiling point of an organic solvent.

[0029] According to one embodiment of this application, the drying temperature for the box or door coated with the mixed solution is 30°C-50°C.

[0030] According to one embodiment of this application, the particle size of the mineral with purification function is 20μm-30μm.

[0031] According to one embodiment of this application, after drying, the particle size of the purifying minerals embedded in the polymer compound is 35%-65% of the thickness of the polymer compound.

[0032] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the purification layer before drying in the refrigeration equipment provided in the embodiments of this application;

[0035] Figure 2 This is a schematic diagram of the structure of the purification layer after drying in the refrigeration equipment provided in the embodiments of this application;

[0036] Figure 3 yes Figure 2 Enlarged view of section A in the middle;

[0037] Figure 4 This is a flowchart of the preparation of the purification layer for a refrigeration device provided in an embodiment of this application;

[0038] Figure label:

[0039] 10. Interior finishes;

[0040] 20. Cleanroom layer; 21. Base layer; 22. Cleanroom section; 23. Organic solvent. Detailed Implementation

[0041] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0042] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0044] In the embodiments of 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.

[0045] 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 the embodiments 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.

[0046] See Figures 1 to 3 The first aspect of this application provides a refrigeration device, which includes a cabinet and a door. The door is closable on the cabinet for opening or closing the cabinet. At least one of the cabinet and the door has an interior surface 10 coated with a purification layer 20 for deodorization, so as to realize the functions of sterilization, odor removal and air purification of the refrigeration device.

[0047] It is understandable that by applying a purification layer 20 for deodorization to at least one of the interior surfaces 10 of the cabinet and door, odors inside the refrigeration equipment can be removed, achieving a deodorization effect. Since this application uses a coating method to apply the purification layer 20 over a large area of ​​the refrigeration equipment, it is equivalent to increasing the arrangement area of ​​the purification components, thereby effectively improving purification efficiency. Moreover, the method of applying the purification layer 20 to the interior surface 10 of the refrigeration equipment using a coating method is simple and has low production costs.

[0048] The interior surface 10 of the refrigeration equipment can be understood as the surface located inside the refrigeration equipment. After opening the door of the refrigeration equipment, all surfaces can be seen, and during the operation of the refrigeration equipment, the low temperature inside the refrigeration equipment can be directly felt.

[0049] For example, the interior surface of the door is the surface facing the box. After the door is closed, this surface can sense the low temperature environment inside the refrigeration equipment, thereby enabling the purification layer 20 coated on the interior surface 10 of the door to function.

[0050] For example, the form of the cleanroom coating on the interior surface of the enclosure can include any of the following:

[0051] In the first scenario, a purification layer is applied to any one of the inner wall surfaces of the enclosure, meaning that a purification layer can be applied to each inner wall surface that makes up the enclosure.

[0052] In the second scenario, an air duct cover is installed on the inner wall of the enclosure, and the surface of the air duct cover is coated with a purification layer. When the air duct cover is installed on the inner wall of the enclosure, it essentially serves as the interior surface of the enclosure.

[0053] In the third case, the interior of the cabinet is constructed to form a refrigeration chamber, which contains at least one of shelves, insulation boards, and drawers, and at least one of the surfaces of the shelves, insulation boards, and drawers is coated with a purification layer.

[0054] like Figures 1 to 3 As shown, the purification layer 20 includes a base layer 21 and a purification section 22. The base layer 21 is suitable for coating on the interior surface 10 of the cabinet or door. A portion of the purification section 22 is embedded in the base layer 21, and another portion of the purification section 22 protrudes from the surface of the base layer 21 to purify the refrigeration equipment.

[0055] One part of the purification unit 22 is embedded in the base layer 21 so that the purification unit 22 is fixed to the surface of the interior surface 10 of the box or door through the base layer 21. The other part of the purification unit 22 protrudes from the surface of the base layer 21 so that the purification ions can be volatilized through this part exposed to the base layer 21 to achieve the deodorization effect.

[0056] It should be noted that since the purification unit 22 is partially embedded in the base layer 21 and partially exposed, the purification layer 20 is applied to surfaces of the refrigeration equipment that are not frequently touched to prevent the purification unit 22 from falling off due to friction. For example, when the purification layer 20 is applied to a shelf, items are usually placed on the upper surface of the shelf. Therefore, the purification layer 20 is suitable to be applied to the back of the shelf, which can not only guarantee a good odor removal effect but also prevent the purification unit 22 from falling off.

[0057] like Figure 2 and Figure 3 As shown, in any implementation of this application, in order to enable the purification part 22 exposed in the base layer 21 to better achieve the odor removal function, the height H of the purification part 22 embedded in the base layer 21 is 35%-65% of the total thickness of the base layer 21.

[0058] The purification section 22 can be approximated as a sphere, and the part of the purification section 22 embedded in the base layer 21 can be regarded as a spherical notch. Therefore, the height H of the purification section 22 embedded in the base layer 21 can be understood as the height of the spherical notch.

[0059] The base layer 21 is composed of polymer compounds, such as one or a combination of polyurethane, polyacrylate, epoxy resin, phenolic resin, and urea-formaldehyde resin. The main function of the base layer 21 is to adhere, and it can be an adhesive, bonding agent, or binder to connect the purification section 22 to the interior surface 10 of the refrigeration equipment. After curing, the base layer 21 has sufficient strength to support the purification section 22 and prevent it from falling off.

[0060] The purification section 22 is composed of minerals with purification functions, such as one or a combination of tourmaline, attapulgite, and vermiculite.

[0061] Tourmaline is a type of cyclic silicate mineral that exhibits pyroelectricity, piezoelectricity, natural polarity, infrared radiation, and the ability to release negative ions. Tourmaline possesses self-generating power, spontaneously producing negative ions. These negative ions can degrade small organic molecules in refrigeration equipment (such as refrigerators), thereby achieving odor removal.

[0062] When the temperature and pressure of the environment surrounding a tourmaline crystal change, the crystal bonds within the tourmaline lattice twist, the charged particles shift relative to each other, the centers of positive and negative charges separate, and the total electric moment of the crystal changes, resulting in the generation of polarization charges. This application utilizes the fact that when tourmaline experiences slight changes in environmental conditions, specifically the potential difference between its crystals, it causes a weak electrolysis of water molecules in the surrounding air, thereby generating negative air ions, which have a good bactericidal and preservative effect. This addresses the problems of bacterial growth and odor transfer in refrigeration equipment. Furthermore, the spontaneous polarization effect of tourmaline is permanent, closely related to its structure and composition, and the material is widely available with low manufacturing costs.

[0063] Attapulgite is a hydrous magnesium aluminum silicate clay mineral with a layered chain structure. It has a unique structure, large specific surface area and good adsorption properties, making it an ideal environmentally friendly material. It can achieve the function of deodorizing refrigeration equipment through adsorption.

[0064] Vermiculite is a two-dimensional layered material with a large specific surface area and exchangeable interlayer ions. After structural modification, it can achieve the deodorizing effect of refrigeration equipment through adsorption and photocatalytic degradation.

[0065] See Figures 1 to 4 The second aspect of this application provides a method for preparing a purification layer 20 in a refrigeration device, comprising the following steps:

[0066] Step S10: First, prepare a mixed solution by adding the mineral with purification function to organic solvent 23 and grinding it to obtain a suspension. After grinding, the particle size of the mineral with purification function is 20μm-30μm.

[0067] Step S20: Add solid polymer compound to the suspension obtained in step S10, heat the suspension to completely dissolve the polymer compound to obtain a mixed solution. The mass ratio of each component in the mixed solution is: the mass ratio of the mineral with purification function, polymer compound and organic solvent 23 is 1:(1-3):(10-30).

[0068] Step S30: Spray the mixed solution onto at least one of the interior surfaces 10 of the housing and the door.

[0069] Step S40: Place the box or door coated with the mixed solution in a dryer for drying to completely evaporate the organic solvent 23, resulting in a purification layer 20 containing polymeric compounds and minerals with purification functions. During the drying operation, the box or door coated with the mixed solution must be dried at the boiling point of the organic solvent 23, at a temperature of approximately 30°C-50°C.

[0070] The mixture is dried completely by evaporating the organic solvent 23 at its boiling point. Ensure the mixed solution is heated evenly to avoid solvent bubbles forming in the polymer compound due to excessively high drying temperatures, which would reduce the mechanical strength of the cured polymer compound. Simultaneously, avoid excessively low drying temperatures and slow drying speeds, which would affect production efficiency.

[0071] After drying, the particle size of the purifying minerals embedded within the polymer compound is 35%-65% of the polymer compound's thickness. This not only achieves a good deodorizing effect but also prevents the purifying minerals from detaching from the polymer compound.

[0072] This application controls the thickness of the purification layer 20 by controlling the particle size of the purifying minerals, the content of the organic solvent 23, and the spraying thickness of the mixed solution. By causing the organic solvent 23 to evaporate, the purifying mineral particles leak out, achieving a deodorizing effect within the refrigeration equipment.

[0073] The polymeric compound composition includes one or more of polyurethane, polyacrylate, epoxy resin, phenolic resin, and urea-formaldehyde resin.

[0074] Among them, the minerals with purifying functions are one or a combination of tourmaline, attapulgite, and vermiculite. Tourmaline includes lithium tourmaline, magnesium tourmaline, and iron tourmaline, etc.

[0075] The organic solvent 23 is ethanol, acetone, ethyl acetate, dichloromethane, etc. The purpose of adding organic solvent 23 is to dilute the ground minerals with purification function so that their particle size remains relatively uniform.

[0076] like Figures 1 to 3 As shown, the following explanation uses coating on a duct cover as an example. In actual production, a mixed solution can be prepared first, namely: one or more of lithium tourmaline powder, magnesium tourmaline powder, and iron tourmaline powder are added to a volatile organic solvent 23 and ground using a sand mill to make the tourmaline particle size 20μm-50μm; a soluble solid polymer compound is added to the ground suspension and heated until the solid polymer compound is completely dissolved to form a mixed solution. The mass ratio of tourmaline, polymer compound, and organic solvent 23 in the mixed solution is 1:(1-3):(10-30).

[0077] Secondly, the mixed solution is coated onto the duct cover plate. The thickness of the coating layer is adjusted according to the concentration of the mixed solution and the particle size of the tourmaline to ensure that after the organic solvent 23 has evaporated, the thickness of the polymer film (polyurethane) is 35%-65% of the tourmaline particle size. If the polyurethane thickness is too large, the tourmaline will be completely or mostly embedded in it, resulting in less exposed tourmaline and a poorer purification effect. If the polyurethane thickness is too small, the polyurethane cannot completely fix the tourmaline powder, which can easily lead to powder shedding and affect the purification effect.

[0078] Furthermore, place the coated duct cover into the drying tunnel of the dryer. Adjust the drying temperature according to the type of organic solvent 23 used to ensure that the organic solvent 23 evaporates at its boiling point until completely dry. Avoid excessively high drying temperatures, which can cause solvent bubbles to form in the polymer film and reduce the mechanical strength of the coating; at the same time, avoid excessively low drying temperatures, which can lead to slow drying speeds and affect production efficiency.

[0079] Example 1:

[0080] Weigh 7.5-12.5g of magnesium tourmaline powder and 150-250g of acetone, grind them in a pin mill to obtain a suspension, and use a laser particle size analyzer to test the particle size D of the magnesium tourmaline powder in the suspension to be 20-30μm.

[0081] Add 20g of polyurethane solid (film) to the suspension, heat and stir the suspension until the film is completely dissolved to obtain a mixed solution.

[0082] The mixed solution is sprayed onto the duct cover plate to a thickness of 100μm-150μm. The duct cover plate is then placed horizontally in a dryer to form a purification layer on its surface. The drying temperature is set to 30-50℃. After drying, the duct cover plate is removed and ready for use.

[0083] It should be noted that the method for applying the purification layer to the other interior surfaces is the same as the method for applying the purification layer to the air duct cover, so it will not be described in detail again.

[0084] Example 2:

[0085] Weigh 7.5-12.5g of magnesium tourmaline powder and 150-250g of acetone, grind them in a pin mill to obtain a suspension, and use a laser particle size analyzer to test the particle size D of the magnesium tourmaline powder in the suspension to be 20-30μm.

[0086] Add 20g of polyurethane solid (film) to the suspension, heat and stir the suspension until the film is completely dissolved to obtain a mixed solution.

[0087] The mixed solution is sprayed onto the duct cover plate to a thickness of 200μm-300μm. The duct cover plate is then placed horizontally in a dryer to form a purification layer on its surface. The drying temperature is set to 30-50℃. After drying, the duct cover plate is removed and ready for use.

[0088] Example 3:

[0089] Weigh 7.5-12.5g of magnesium tourmaline powder and 150-250g of acetone, grind them in a pin mill to obtain a suspension, and use a laser particle size analyzer to test the particle size D of the magnesium tourmaline powder in the suspension to be 20-30μm.

[0090] Add 20g of polyurethane solid (film) to the suspension, heat and stir the suspension until the film is completely dissolved to obtain a mixed solution.

[0091] The mixed solution is sprayed onto the duct cover plate to a thickness of 50μm-70μm. The duct cover plate is then placed horizontally in a dryer to form a purification layer on its surface. The drying temperature is set to 30-50℃. After drying, the duct cover plate is removed and ready for use.

[0092] Example 4:

[0093] Weigh 7.5-12.5g of magnesium tourmaline powder and 150-250g of acetone, grind them in a pin mill to obtain a suspension, and use a laser particle size analyzer to test the particle size D of the magnesium tourmaline powder in the suspension to be 30μm-50μm.

[0094] Add 20g of polyurethane solid (film) to the suspension, heat and stir the suspension until the film is completely dissolved to obtain a mixed solution.

[0095] The mixed solution is sprayed onto the duct cover plate to a thickness of 100μm-150μm. The duct cover plate is then placed horizontally in a dryer to form a purification layer on its surface. The drying temperature is set to 30-50℃. After drying, the duct cover plate is removed and ready for use.

[0096] Example 5:

[0097] Weigh 7.5-12.5g of magnesium tourmaline powder and 150-250g of acetone, grind them in a pin mill to obtain a suspension, and use a laser particle size analyzer to test the particle size D of the magnesium tourmaline powder in the suspension to be 30μm-50μm.

[0098] Add 20g of polyurethane solid (film) to the suspension, heat and stir the suspension until the film is completely dissolved to obtain a mixed solution.

[0099] The mixed solution is sprayed onto the duct cover plate to a thickness of 200μm-300μm. The duct cover plate is then placed horizontally in a dryer to form a purification layer on its surface. The drying temperature is set to 30-50℃. After drying, the duct cover plate is removed and ready for use.

[0100] Comparative Example 1:

[0101] Weigh 150-250g of acetone, add 20g of solid polyurethane (film) to the acetone, and stir until the film is completely dissolved to obtain a mixed solution. Spray the mixed solution onto the duct cover plate to a thickness of 100μm-150μm. Place the duct cover plate horizontally in a dryer to dry it, forming a purification layer on the surface of the duct cover plate. Set the drying temperature to 30-50℃. After drying, remove and set aside for use.

[0102] Comparative Example 2:

[0103] Weigh 150-250g of acetone, add 20g of solid polyurethane (film) to the acetone, and stir until the film is completely dissolved to obtain a mixed solution. Spray the mixed solution onto the duct cover plate to a thickness of 200μm-300μm. Place the duct cover plate horizontally in a dryer to dry it, forming a purification layer on the surface of the duct cover plate. Set the drying temperature to 30-50℃. After drying, remove and set aside for use.

[0104] The above-described embodiments, as well as the comparative example, are duct cover fragments obtained by cutting 20cm*20cm square pieces, and are placed at 1m... 3 The samples were placed in a sealed bag at an ambient temperature of 2°C for 2 hours. The results of the negative oxygen ion content test are shown in the table below:

[0105] Table 1. Negative Oxygen Ion Content Test Table

[0106]

[0107] As can be clearly seen from Table 1, applying the purification layer 20 over a large area on the interior surface of the refrigeration equipment using a coating method can significantly increase the content of negative oxygen ions. High concentrations of negative oxygen ions will have a significant deodorizing effect.

[0108] Specifically, as shown in Table 1, the purification layer prepared on the surface of the duct cover by the preparation method in Example 1 has the highest concentration of negative oxygen ions, thus achieving a better purification effect.

[0109] The purification layer prepared on the surface of the duct cover in Example 2 has a poor purification effect because a large amount of tourmaline powder is wrapped by a polymer compound (film) and cannot directly contact the air.

[0110] In Example 3, the purification layer prepared on the surface of the duct cover plate has poor purification effect because the tourmaline powder is too shallowly coated with polymer compound (film). As a result, the tourmaline powder is easily detached when the duct cover plate is cut.

[0111] In the preparation method of Example 4, when preparing the purification layer on the surface of the air duct cover, the particle size of the tourmaline powder is increased, while the polymer compound (film) is relatively thin and cannot stably encapsulate the tourmaline powder. As a result, when the air duct cover is cut, the tourmaline powder is severely lost due to shedding, thus the purification effect is poor.

[0112] In Example 5, the purification layer was prepared on the surface of the duct cover plate. Due to the increased spraying thickness of the mixed solution, the specific surface area of ​​the tourmaline powder was smaller than that of Example 1, resulting in a slightly worse purification effect.

[0113] In this application, in addition to coating the surface of the air duct cover with a purification layer, a mixed solution can also be sprayed onto the surface of the door facing the cabinet and dried, thereby creating a purification layer on the interior surface of the door. Alternatively, a purification layer can be coated on any inner wall surface of the cabinet. Or, the interior of the cabinet can be constructed with a refrigeration chamber containing at least one of shelves, insulation boards, and drawers. At least one surface of the shelves, insulation boards, and drawers is coated with a purification layer, so that a portion of the tourmaline is anchored in a base layer composed of a polymer compound and adhered to the air duct cover, while another portion protrudes beyond the polymer compound (film). When environmental conditions change slightly, the tourmaline particles protruding beyond the polymer compound (film) cause a weak electrolysis of water molecules in the surrounding air through the potential difference between their crystals, thereby generating negative air ions that degrade small-molecule odors, achieving purification. This solves the problems of bacterial growth and odor cross-contamination in refrigeration equipment.

[0114] This application uses a coating method to coat the purification layer 20 over a large area on the refrigeration equipment, which is equivalent to increasing the arrangement area of ​​the purification components, thereby effectively improving the purification efficiency. Moreover, by using a coating method to set the purification layer 20 on the interior surface 10 of the refrigeration equipment, the coating process is simple and the production cost is reduced.

[0115] Meanwhile, the purification layer 20 is coated over a large area on the refrigeration equipment to replace the traditional odor removal module, odor elimination module or odor elimination bag. The structure is simple and has no extra parts, which optimizes the appearance of the refrigeration equipment and reduces the manufacturing cost of the purification components.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. A refrigeration device, characterized in that, include: Box; A door, which is closable and can be installed on the housing to open or close the housing; At least one of the interior surfaces of the housing and the door is coated with a purification layer for odor removal, the purification layer comprising: The base layer is coated on the interior surface of the housing or the door. The purification unit has a portion embedded within the base layer and a portion protruding from the surface of the base layer; the height of the purification unit embedded within the base layer is 35%-65% of the thickness of the base layer.

2. The refrigeration equipment according to claim 1, characterized in that, The base layer is composed of polymer compounds; the purification section is composed of minerals with purification functions.

3. The refrigeration equipment according to claim 2, characterized in that, The base layer includes at least one of polyurethane, polyacrylate, epoxy resin, phenolic resin, and urea-formaldehyde resin.

4. The refrigeration equipment according to claim 3, characterized in that, The purification section includes at least one of tourmaline, attapulgite, and vermiculite.

5. The refrigeration equipment according to any one of claims 1 to 4, characterized in that, The form of the purification layer coating on the interior surface of the enclosure includes any of the following: The purification layer is coated on any one of the inner wall surfaces of the enclosure; The inner wall of the enclosure is equipped with an air duct cover, and the surface of the air duct cover is coated with the purification layer. The interior of the cabinet is configured to form a refrigeration chamber, and the refrigeration chamber is provided with at least one of a shelf, a heat insulation board, and a drawer. The surface of at least one of the shelf, the heat insulation board, and the drawer is coated with the purification layer.

6. A method for preparing a purification layer for a refrigeration device as described in any one of claims 1 to 5, characterized in that, Includes the following steps: Minerals with purifying properties are added to an organic solvent and ground to obtain a suspension; A solid polymer compound is added to a suspension, and the suspension is heated to completely dissolve the polymer compound to obtain a mixed solution. Spray the mixed solution onto at least one interior surface in the housing and door; The box or door coated with the mixed solution is dried to evaporate the organic solvent, resulting in a mineral-protruding purification layer with purification function.

7. The method for preparing the purification layer of the refrigeration equipment according to claim 6, characterized in that, In the mixed solution, the mass ratio of the purifying minerals, polymers and organic solvents is 1:(1-3):(10-30).

8. The method for preparing the purification layer of the refrigeration equipment according to claim 7, characterized in that, The box or door coated with the mixed solution is dried at the boiling point of the organic solvent.

9. The method for preparing the purification layer of the refrigeration equipment according to claim 8, characterized in that, The drying temperature for boxes or doors coated with the mixed solution is 30℃-50℃.

10. The method for preparing the purification layer of the refrigeration equipment according to claim 6, characterized in that, The particle size of the minerals with purification function is 20μm-30μm.

11. The method for preparing the purification layer of the refrigeration equipment according to claim 6, characterized in that, After drying, the particle size of the purifying minerals embedded in the polymer compound is 35%-65% of the thickness of the polymer compound.

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