Preparation method of vacuum insulation panel, vacuum insulation panel, box liner and refrigeration equipment

Abstract

The invention relates to the technical field of vacuum insulation panels, and provides a preparation method of a vacuum insulation panel, the vacuum insulation panel, a box container and refrigeration equipment. The preparation method of the vacuum insulation panel comprises the steps that a first core material and a surface layer core material are sequentially stacked to form an integrated core material, the surface layer core material is partially covered with the first core material, and the surface layer core material is located within the boundary range of the first core material; the integrated core material is loaded into a barrier bag, and the edge of the barrier bag is subjected to heat sealing after vacuumizing; and the integrated core material after heat sealing is folded into a box body structure, the surface layer core material is folded to form a basic box body, and the part, not covered by the surface layer core material, of the first core material continues to be bent to conduct secondary coating on the basic box body. The integrated core material is folded into the box body structure, so that the possibility that gaps are generated during splicing of the vacuum heat insulation plates is fundamentally avoided, the problems of cold leakage and condensation at the splicing position are effectively solved, and the overall heat preservation performance of the box body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum insulation panels, and particularly to a preparation method of a vacuum insulation panel, a vacuum insulation panel, a box liner, and a refrigeration device. Background Art

[0002] With the development of technology, a vacuum insulation panel is a new type of thermal insulation material, mainly composed of a heat insulation core material and a getter bagged in a barrier bag and made by vacuum encapsulation. By maximizing the vacuum degree inside the insulation panel, gas convection heat transfer is restricted, and heat conduction is effectively reduced. Compared with traditional thermal insulation materials, it has an extremely low thermal conductivity and significant economic benefits, and has broad application prospects in refrigeration devices such as refrigerators, freezers, insulation boxes, and cold chain containers. However, currently common vacuum insulation panels are all square flat plates. When spliced and installed on a box body, there are gaps between the vacuum insulation panels, and there are obvious risks of cold leakage and condensation at the splicing joints. These gaps not only reduce the overall thermal insulation performance but may also cause corrosion or mold growth due to long-term condensation. To solve this problem, it is usually necessary to additionally fill foaming materials or thermal insulation cotton, but this increases the process complexity and cost. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the related art. For this reason, this application proposes a preparation method of a vacuum insulation panel.

[0004] This application also proposes a vacuum insulation panel.

[0005] This application also proposes a box liner.

[0006] This application also proposes a refrigeration device.

[0007] According to the preparation method of the vacuum insulation panel proposed by the first aspect embodiment of this application, it includes: Stacking a first core material and a surface core material in sequence to form an integrated core material, wherein a part of the first core material covers the surface core material, and the surface core material is within the boundary range of the first core material; Putting the integrated core material into a barrier bag, evacuating the air and then heat-sealing the edge of the barrier bag; Folding the heat-sealed integrated core material into a box body structure, wherein the surface core material is folded to form a basic box body, and the part of the first core material not covered by the surface core material continues to be bent and performs secondary coating on the basic box body.

[0008] According to the preparation method of the vacuum insulation panel of the embodiment of the present application, the integrated core material is folded into a box structure, fundamentally avoiding the possibility of gaps generated by splicing the vacuum insulation panel, thereby effectively solving the problems of cold leakage and condensation at the splicing part, and improving the overall heat preservation performance of the box. At the same time, the part of the first core material not covered by the surface core material continues to be bent and the basic box body is covered for the second time, increasing the heat transfer path, so that the heat needs to pass through more obstacles during the transfer process, further improving the heat insulation effect of the vacuum insulation panel. This design not only simplifies the production process, reduces the cost, but also improves the performance and quality of the vacuum insulation panel.

[0009] According to an embodiment of the present application, folding the heat-sealed integrated core material into a box structure, wherein the surface core material is folded to form a basic box body, and the part of the first core material not covered by the surface core material continues to be bent and the basic box body is covered for the second time, including: The surface core material folds the surface core material along a preset crease to form a basic box body; Bend the part of the first core material not covered by the surface core material towards the outer wall surface of the basic box body; Fold the first core material exceeding the edge of the basic box body towards the inside of the box body so that the folded part is close to the inner wall surface of the basic box body.

[0010] According to an embodiment of the present application, the first core material is provided with a first preset folding seam, the surface core material includes a plurality of core material blocks, and a second preset folding seam is formed at intervals between the core material blocks.

[0011] According to an embodiment of the present application, the first core material includes: a slit core material and a base core material, the unfolded areas of the slit core material and the base core material are the same, the part of the slit core material not covered by the surface core material is provided with the first preset folding seam, the base core material is a seamless core material, the slit core material is connected to the base core material, and the surface core material is connected to the slit core material.

[0012] According to an embodiment of the present application, stacking the first core material and the surface core material in sequence to form an integrated core material includes: Place the core material block on one side of the first core material provided with the first preset folding seam; Adjust the gap between the core material blocks; Connect the core material block and the first core material.

[0013] According to an embodiment of the present application, the first core material is horizontally divided and vertically divided into three parts each to form nine regions. Among them, in the first row, from left to right, they are the first region, the second region, and the third region. In the second row, from left to right, they are the fourth region, the fifth region, and the sixth region. In the third row, from left to right, they are the seventh region, the eighth region, and the ninth region. The core material blocks are arranged in the second region, the fourth region, the fifth region, the sixth region, and the eighth region. The first region, the third region, the seventh region, and the ninth region are all provided with first preset folding seams facing the fifth region.

[0014] According to an embodiment of the present application, the steps of loading the integrated core material into the barrier bag, evacuating it, and then heat-sealing the edge of the barrier bag include: Loading the integrated core material, the getter, and the desiccant into the barrier bag together, and placing the getter and the desiccant in the non-folded area of the integrated core material; Evacuating the inside of the barrier bag; Sealing the edge of the barrier bag; Performing a hemming treatment on the edge of the heat-sealed barrier bag.

[0015] A vacuum insulation panel according to an embodiment of the second aspect of the present application is prepared by the above-mentioned preparation method of the vacuum insulation panel, and includes: A box body structure, which includes a basic box body formed by folding the surface core material and a multi-layer coating structure formed by the extended part of the first core material covering the inside and outside of the basic box body; A closed accommodation cavity is formed inside the box body structure.

[0016] A box liner according to an embodiment of the third aspect of the present application is prepared by the above-mentioned preparation method of the vacuum insulation panel. The box liner includes a basic box body formed by folding the surface core material and a multi-layer coating structure formed by the extended part of the first core material covering the inside and outside of the basic box body; A closed accommodation cavity is formed inside the box liner.

[0017] A refrigeration device according to an embodiment of the fourth aspect of the present application includes: A box body, with a cavity formed inside the box body; The above-mentioned box liner, installed in the cavity.

[0018] Additional aspects and advantages of the present application will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the accompanying drawings required for the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the steps of the preparation method of the vacuum insulation panel provided by the embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of the integrated core material provided by the embodiment of the present application.

[0022] Figure 3 It is a top view structural schematic diagram of the integrated core material provided by the embodiment of the present application.

[0023] Figure 4 It is a schematic diagram of the structure when the vacuum insulation panel provided by the embodiment of the present application is folded into a box structure.

[0024] Figure 5 It is an exploded structural schematic diagram of the integrated core material provided by the embodiment of the present application.

[0025] Figure 6 It is a schematic diagram of the regional division of the integrated core material provided by the embodiment of the present application.

[0026] Figure 7 It is a schematic diagram of the regional division of the integrated core material provided by another embodiment of the present application.

[0027] Figure 8 is Figure 7 A schematic diagram of the structure when the vacuum insulation panel provided by the embodiment is folded into a box structure.

[0028] Figure 9 It is a schematic diagram of the regional division of the integrated core material provided by another embodiment of the present application.

[0029] Figure 10 is Figure 9 A schematic diagram of the structure when the vacuum insulation panel provided by the embodiment is folded into a box structure.

[0030] Figure 11 It is a schematic diagram of the structure of the integrated core material provided by another embodiment of the present application.

[0031] Figure 12 It is a schematic diagram of the structure of the integrated core material provided by another embodiment of the present application.

[0032] Reference numerals: 100, First core material; 101, First region; 102, Second region; 103, Third region; 104, Fourth region; 105, Fifth region; 106, Sixth region; 107, Seventh region; 108, Eighth region; 109, Ninth region; 110, Tenth region; 111, Eleventh region; 112, Twelfth region; 120, First preset folding seam; 130, Slit core material; 140, Base core material; 200, Surface core material; 201, Second preset folding seam; 210, Core material block; 300, Barrier bag; 400, Getter; 500, Desiccant. Detailed implementation manners

[0033] The following further describes the implementation manners of the present application in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0034] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, which can include an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0036] In the embodiments of the present application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0037] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0038] With the continuous progress of technology, the vacuum insulation panel, as a highly innovative new thermal insulation material, is gradually showing its unique advantages in many fields. Compared with traditional thermal insulation materials, the vacuum insulation panel has an extremely low thermal conductivity, which means that it can achieve better thermal insulation effects with a smaller thickness, and at the same time, it also has significant economic benefits. For this reason, the vacuum insulation panel has broad application prospects in refrigeration equipment such as refrigerators, freezers, insulated boxes, and cold chain containers.

[0039] However, most of the common vacuum insulation panels on the market at present are square flat plates. Inevitably, gaps will be left between the vacuum insulation panels when they are actually spliced and installed on the box body. The existence of these gaps brings many problems. On the one hand, they will cause obvious cold leakage at the splicing joints, greatly reducing the overall thermal insulation performance of the box body; on the other hand, condensation is likely to occur at the gaps due to temperature differences. In the long run, it may not only cause corrosion problems, but also breed mold, posing a threat to the service life of the box body and the hygiene and safety of the internal items. To solve this problem, the usual practice is to additionally fill foaming materials or thermal insulation cotton, but this undoubtedly increases the complexity and cost of the process.

[0040] In view of the problems existing in the above-mentioned prior art, for the preparation method of the vacuum insulation panel proposed in the first aspect embodiment of the present application, please refer to Figures 1 to 4, the preparation method mainly includes Step 100, Step 200 and Step 300.

[0041] Step 100: Stack the first core material 100 and the surface core material 200 in sequence to form an integrated core material. Among them, the first core material 100 partially covers the surface core material 200, and the surface core material 200 is located within the boundary range of the first core material 100.

[0042] Step 200: Put the integrated core material into the barrier bag 300, evacuate the air, and then heat-seal the edge of the barrier bag 300.

[0043] Step 300: Fold the heat-sealed integrated core material into a box structure. Among them, the surface core material 200 is folded to form a basic box body, and the part of the first core material 100 not covered by the surface core material 200 continues to be bent and performs secondary coating on the basic box body.

[0044] According to the preparation method of the vacuum insulation panel of the embodiment of the present application, by folding the integrated core material into a box structure, the possibility of gaps generated by splicing of the vacuum insulation panel is fundamentally avoided, thus effectively solving the problems of cold leakage and condensation at the splicing, and improving the overall heat preservation performance of the box body. At the same time, the part of the first core material 100 not covered by the surface core material 200 continues to be bent and performs secondary coating on the basic box body, increasing the heat transfer path, so that the heat needs to pass through more obstacles during the transfer process, further improving the heat insulation effect of the vacuum insulation panel.

[0045] In Step 100, the first core material 100 partially covers the surface core material 200, and the surface core material 200 is located within the boundary range of the first core material 100. Such a design enables the first core material 100 to have enough material to form a coating on the surface core material 200 during the subsequent folding process.

[0046] In Step 200, put the above-mentioned formed integrated core material into the barrier bag 300, and then perform a vacuum pumping operation. After the vacuum pumping is completed, heat-seal the edge of the barrier bag 300. By evacuating the air, the gas content around the core material can be further reduced, improving the heat insulation effect; while the heat-sealing operation ensures the tightness of the barrier bag 300 and prevents gas from entering.

[0047] In Step 300, fold the heat-sealed integrated core material into a box structure. During this process, the surface core material 200 is folded to form a basic box body, and the part of the first core material 100 not covered by the surface core material 200 continues to be bent and performs secondary coating on the basic box body.

[0048] According to an embodiment of the present application, the integrally formed core material after heat sealing is folded into a box structure, wherein the surface core material 200 is folded to form a basic box, and the portion of the first core material 100 not covered by the surface core material 200 is further bent to perform secondary coating on the basic box, including step 310, step 320, and step 330.

[0049] Step 310: The surface core material 200 is folded along a preset crease to form a basic box.

[0050] Step 320: The portion of the first core material 100 not covered by the surface core material 200 is bent towards the outer wall surface of the basic box.

[0051] Step 330: The portion of the first core material 100 extending beyond the edge of the basic box is folded back towards the inside of the box, so that the folded portion is closely attached to the inner wall surface of the basic box.

[0052] In step 310, the preset crease refers to the folding line preset on the surface core material 200 according to the box structure to be finally formed during the preparation of the integrally formed core material. These creases can be marked on the surface core material 200 by means of indentation, scoring, etc., so that the folding can be accurately carried out along the predetermined position during folding. The basic box is the basic box shape formed by folding the surface core material 200, and it is the basic part of the box structure of the entire vacuum insulation panel.

[0053] Folding the surface core material 200 along the preset crease to form a basic box can ensure the accuracy and consistency of folding. The existence of the preset crease makes the folding process more regular, avoiding problems such as irregular box shape and inaccurate size caused by random folding.

[0054] In step 320, the extending portion refers to the part of the first core material 100 that extends beyond the boundary range of the surface core material 200. In the integrally formed core material, the first core material 100 partially covers the surface core material 200, and this extra part of the material is the extending portion, which provides the material basis for the secondary coating of the basic box.

[0055] Bending the covered portion of the first core material 100 towards the outer wall surface of the basic box increases the level of the box structure. The bent covered portion can play a certain protective role for the basic box. At the same time, since the extending portion is located on the outer surface of the basic box, it can further block the incoming heat from the outside, enhancing the heat insulation performance of the vacuum insulation panel. In addition, this bent structure can also increase the overall strength of the box, making it more durable. In an embodiment, the first core material 100 can be folded along the first preset folding seam 120 (explained later) to achieve the coating of the edge of the basic box.

[0056] In step 330, the part that extends beyond the edge coverage of the base box body is folded back towards the inside of the box body and closely adheres to the inner wall surface of the base box body. This folded-back structure increases the heat transfer path. When heat attempts to be transferred through the box body, it needs to bypass the folded-back part, increasing the resistance to heat transfer and effectively hindering the conduction of heat. In one embodiment, the part of the first core material 100 that exceeds the base box body can be folded into the box to achieve the covering of the corners of the base box body.

[0057] According to an embodiment of the present application, the first core material 100 is provided with a first preset folding seam 120, and the surface core material 200 includes several core material blocks 210. Second preset folding seams 201 are formed at intervals between the core material blocks 210.

[0058] It can be understood that the first preset folding seam 120 refers to the preset folding positions on the first core material 100, and these positions are usually determined according to the requirements of the finally formed box body structure and the folding process. The first preset folding seam 120 can be achieved by making indentations, scoring on the core material, or using special material treatment methods, so that during the subsequent folding process, the first core material 100 can be accurately folded along these preset seams.

[0059] The surface core material 200 is composed of multiple independent core material blocks 210. There are certain intervals between these core material blocks 210, and these intervals form the second preset folding seams 201. This enables the surface core material 200 to be flexibly bent in a predetermined manner during folding to form the required shape of the base box body. The size and shape of the second preset folding seams 201 can be adjusted according to the specific box body design requirements to ensure that the folded base box body has good structural stability and sealing performance.

[0060] According to an embodiment of the present application, please refer to Figure 5 , the first core material 100 includes a slotted core material 130 and a base core material 140. The unfolded areas of the slotted core material 130 and the base core material 140 are the same. The part of the slotted core material 130 that is not covered by the surface core material 200 is provided with the first preset folding seam 120. The base core material 140 is a seamless core material. The slotted core material 130 is connected to the base core material 140, and the surface core material 200 is connected to the slotted core material 130.

[0061] It can be understood that the part of the slotted core material 130 that is not covered by the surface core material 200 is provided with the first preset folding seam 120. The existence of the first preset folding seam 120 enables the slotted core material 130 to be bent in a predetermined manner during the subsequent folding process, thereby achieving a specific covering shape for the base box body. These folding seams can be precisely set according to the design requirements of the box body structure to ensure that the folded slotted core material 130 can accurately fit at the corresponding positions of the base box body.

[0062] The base core material 140 is a seamless core material, which mainly provides basic heat insulation performance and structural support. The seamless structure ensures the integrity and stability of the base core material 140 and reduces the difficulty of gluing.

[0063] In one embodiment, after the part of the first core material 100 that is not covered by the surface core material 200 continues to bend and secondarily wraps the base box body, the first core material 100 and the surface core material 200 are bonded using glue.

[0064] According to an embodiment of the present application, stacking the first core material 100 and the surface core material 200 in sequence to form an integrated core material includes step 110, step 120, and step 130.

[0065] Step 110: Place the core material block 210 on the side of the first core material 100 where the first preset folding seam 120 is provided; Step 120: Adjust the gap between the core material blocks 210; Step 130: Connect the core material block 210 and the first core material 100.

[0066] In step 110, place the core material block 210 on the side of the first core material 100 where the first preset folding seam 120 is provided, so that the core material block 210 can make full use of the folding characteristics of the first core material 100 and cooperate with the first core material 100 during the folding process to form a more compact and stable structure.

[0067] In step 120, an appropriate gap can ensure that the core material block 210 can move and bend smoothly during folding, improving the quality of the box body structure formed by the vacuum insulation panel.

[0068] In step 130, after adjusting the gap of the core material block 210, it is necessary to connect the core material block 210 and the first core material 100 so that they form an integral integrated core material. The connection method can adopt bonding, hot melt connection or other suitable connection methods to ensure the firmness and tightness of the connection.

[0069] According to an embodiment of the present application, please refer to Figure 4 and Figure 6, the first core material 100 is horizontally divided into three parts and vertically divided into three parts to form nine regions. Among them, in the first row from left to right are the first region 101, the second region 102, and the third region 103. In the second row from left to right are the fourth region 104, the fifth region 105, and the sixth region 106. In the third row from left to right are the seventh region 107, the eighth region 108, and the ninth region 109. The core material blocks 210 are arranged in the second region 102, the fourth region 104, the fifth region 105, the sixth region 106, and the eighth region 108. The first region 101, the third region 103, the seventh region 107, and the ninth region 109 are all provided with first preset folding seams 120 facing the fifth region 105.

[0070] In Figures 2 to 6 's embodiment, the first region 101, the third region 103, the seventh region 107, and the ninth region 109 are all provided with three first preset folding seams 120. In some possible embodiments, the first preset folding seam 120 can also be set to other quantities. Please refer to Figure 7 and Figure 8 's embodiment, the first region 101, the third region 103, the seventh region 107, and the ninth region 109 are all provided with one first preset folding seam 120.

[0071] It should be noted that the number of the first preset folding seams 120 in the first region 101, the third region 103, the seventh region 107, and the ninth region 109 can actually be any quantity, as long as the extended part can perform secondary wrapping on the basic box body after being folded according to the first preset folding. The present application does not make specific restrictions.

[0072] In addition to the box body structure with an opening, the preparation method of the vacuum insulation panel of the present application can also be set as a box body structure with a cover body.

[0073] According to an embodiment of the present application, the first core material 100 is horizontally divided into four parts and vertically divided into three parts to form twelve regions. Among them, in the first row from left to right are the first region 101, the second region 102, and the third region 103. In the second row from left to right are the fourth region 104, the fifth region 105, and the sixth region 106. In the third row from left to right are the seventh region 107, the eighth region 108, and the ninth region 109. In the fourth row from left to right are the tenth region 110, the eleventh region 111, and the twelfth region 112. The core material blocks 210 are arranged in the second region 102, the fifth region 105, the seventh region 107, the eighth region 108, the ninth region 109, and the eleventh region 111. The first region 101, the third region 103, the fourth region 104, the sixth region 106, the tenth region 110, and the twelfth region 112 are all provided with the first preset folding seam 120.

[0074] InFigure 9 and Figure 10 In the embodiments of Figure 10 , a first preset folding seam 120 is provided in each of the first region 101, the third region 103, the fourth region 104, the sixth region 106, the tenth region 110, and the twelfth region 112.

[0075] It should be noted that the actual number of the first preset folding seams 120 provided in the first region 101, the third region 103, the fourth region 104, the sixth region 106, the tenth region 110, and the eleventh region 111 can be arbitrary, as long as the extended part wraps the basic box body twice after being folded according to the first preset folding, and the present application does not make specific limitations.

[0076] Of course, there are other ways to form the box body structure, and the present application will not elaborate on them one by one.

[0077] In some possible embodiments, the integrated core material formed by stacking the first core material 100 and the surface core material 200 in sequence can be square, or can also be parallelogram, trapezoid, regular polygon, non-regular polygon, etc.

[0078] Figure 11 and Figure 12 are partial scheme demonstrations.

[0079] According to an embodiment of the present application, the first core material 100 is one or a combination of glass fiber core material, organic fiber core material, aerosil core material, and aerogel core material.

[0080] According to an embodiment of the present application, the surface core material 200 is one or a combination of glass fiber core material, organic fiber core material, aerosil core material, and aerogel core material.

[0081] In an embodiment, the barrier bag 300 includes a heat-sealing layer, a gas-barrier layer, a heat-insulating layer, and a protective layer. Among them, the materials, specifications, and types of the heat-sealing layer, the gas-barrier layer, the heat-insulating layer, and the protective layer can be replaced, and specific limitations are not made here.

[0082] In an embodiment, a conventional square barrier bag 300 can meet the folding requirements of the square integrated core material. Of course, when the integrated core material formed by stacking the first core material 100 and the surface core material 200 in sequence is in other shapes such as parallelogram, trapezoid, regular polygon, non-regular polygon, etc., a barrier bag 300 with a corresponding shape can be used.

[0083] According to an embodiment of the present application, loading the integrated core material into the barrier bag 300 and heat-sealing the edge of the barrier bag 300 after vacuumizing includes step 210, step 220, step 230, and step 240.

[0084] Step 210: Put the integrated core material, getter 400, and desiccant 500 together into the barrier bag 300. The getter 400 and desiccant 500 are placed in the non-folded area of the integrated core material. Step 220: Evacuate the inside of the barrier bag 300. Step 230: Seal the edge of the barrier bag 300. Step 240: Hem the edge of the barrier bag 300 after heat sealing.

[0085] It can be understood that the getter 400 is a substance that can absorb residual gases. During the vacuum packaging process, it can further reduce the gas content in the barrier bag 300 and improve the vacuum degree. The desiccant 500 is used to absorb the moisture in the barrier bag 300, prevent the moisture from having an adverse effect on the core material and the getter 400, and ensure the long-term stability and performance of the vacuum insulation panel.

[0086] In step 210, putting the getter 400 and desiccant 500 together with the integrated core material into the barrier bag 300 and placing them in the non-folded area can give full play to their functions. The getter 400 can absorb residual gases, improve the vacuum degree in the barrier bag 300, and thus enhance the heat insulation performance of the vacuum insulation panel; the desiccant 500 can absorb moisture and avoid performance degradation and corrosion problems caused by the presence of moisture. At the same time, placing them in the non-folded area can ensure that they are not damaged in the subsequent process and guarantee the normal functioning of their functions.

[0087] In step 220, use a vacuum pumping device to pump out the air inside the barrier bag 300 to make its inside reach a relatively high vacuum degree. By evacuating, the gas content in the barrier bag 300 can be greatly reduced, the gas convection heat transfer can be reduced, and thus the heat insulation performance of the vacuum insulation panel can be significantly improved. A higher vacuum degree means a lower thermal conductivity, which can better prevent the transfer of heat and keep the internal temperature of the refrigeration equipment more stable.

[0088] In step 230, after the evacuation is completed, use heat sealing or other suitable sealing methods to seal the edge of the barrier bag 300 to prevent gas leakage.

[0089] In step 240, after the edge of the barrier bag 300 is sealed, hem the heat-sealed edge. The hemming treatment not only improves the appearance quality of the vacuum insulation panel and makes it more regular, but also enhances the strength and sealing performance of the edge of the barrier bag 300. The neat edge can reduce the risk of gas leakage caused by edge damage and further improve the reliability and stability of the vacuum insulation panel.

[0090] A vacuum insulation panel according to an embodiment of the second aspect of the present application is prepared by the above-mentioned preparation method of the vacuum insulation panel, and includes: A box body structure, which includes a basic box body formed by folding a surface core material 200 and a multi-layer coating structure formed by extending parts of a first core material 100 covering the inside and outside of the basic box body; A sealed accommodation cavity is formed inside the box body structure.

[0091] It can be understood that the basic box body is formed by folding the surface core material 200. The surface core material 200 forms a stable basic box body shape with a certain space, providing a basic support framework for the entire vacuum insulation panel. The first core material 100 is provided with a first preset folding seam 120, which enables its extending part to be flexibly folded and closely attached to the inner and outer surfaces of the basic box body, forming a multi-layer coating, greatly enhancing the sealing and heat insulation performance of the box body structure.

[0092] The multi-layer coating structure makes the heat transfer path complex and long. When external heat attempts to transfer through the vacuum insulation panel, it needs to pass through multiple core materials and the vacuum layer, which greatly increases the heat transfer resistance and effectively reduces the heat transfer speed.

[0093] It should be noted that this vacuum insulation panel adopts the above unique structure and advanced preparation method, and has excellent heat insulation performance, structural stability and sealing performance.

[0094] A box liner according to an embodiment of the third aspect of the present application is prepared by the above preparation method of the vacuum insulation panel. The box liner includes a basic box body formed by folding a surface core material 200 and a multi-layer coating structure formed by extending parts of a first core material 100 covering the inside and outside of the basic box body; A sealed accommodation cavity is formed inside the box liner.

[0095] It can be understood that the basic box body is formed by folding the surface core material 200. The surface core material 200 forms a stable basic box body shape with a certain space, providing a basic support framework for the entire vacuum insulation panel. The first core material 100 is provided with a first preset folding seam 120, which enables its extending part to be flexibly folded and closely attached to the inner and outer surfaces of the basic box body, forming a multi-layer coating, greatly enhancing the sealing and heat insulation performance of the box body structure.

[0096] The multi-layer coating structure makes the heat transfer path complex and long. When external heat attempts to transfer through the vacuum insulation panel, it needs to pass through multiple core materials and the vacuum layer, which greatly increases the heat transfer resistance and effectively reduces the heat transfer speed.

[0097] It should be noted that this box liner adopts the above unique structure and advanced preparation method, and has excellent heat insulation performance, structural stability and sealing performance.

[0098] A refrigeration device according to an embodiment of the fourth aspect of the present application includes: A box body, with a cavity inside the box body; The above-mentioned inner box liner is installed in the cavity.

[0099] There is a cavity inside the box body, which provides space for the installation of the inner box liner. The inner box liner is installed in the cavity of the box body. The inner box liner adopts the above-mentioned unique structure and advanced preparation method, and has excellent heat insulation performance, structural stability and sealing performance. The inner box liner is composed of a basic box body formed by folding the surface core material 200 and a multi-layer coating structure in which the extended part of the first core material 100 is coated inside and outside the basic box body, and a sealed accommodation cavity is formed inside. After vacuum treatment, the heat transfer by gas convection is greatly reduced.

[0100] Due to its excellent heat insulation performance, structural stability and sealing performance, the vacuum insulation panel can be widely used in refrigeration equipment, such as refrigerators, freezers, etc. In a refrigerator, using the vacuum insulation panel of the present application can effectively reduce the heat dissipation inside the refrigerator, reduce the energy consumption of the refrigerator, and improve the refrigeration efficiency.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered by the scope of the claims of the present application.

Claims

1. A preparation method of a vacuum insulation panel, characterized in that, Including: Stacking the first core material and the surface core material in sequence to form an integrated core material, wherein the first core material partially covers the surface core material, and the surface core material is within the boundary range of the first core material; Putting the integrated core material into a barrier bag, evacuating the air, and then heat-sealing the edge of the barrier bag; Folding the heat-sealed integrated core material into a box structure, wherein the surface core material is folded to form a basic box body, and the part of the first core material not covered by the surface core material is further bent to perform secondary coating on the basic box body.

2. The preparation method of the vacuum insulation panel according to claim 1, characterized in that, The step of folding the heat-sealed integrated core material into a box structure, wherein the surface core material is folded to form a basic box body, and the part of the first core material not covered by the surface core material is further bent to perform secondary coating on the basic box body includes: Folding the surface core material along a preset crease to form a basic box body; Bending the part of the first core material not covered by the surface core material towards the outer wall surface of the basic box body; Folding the first core material exceeding the edge of the basic box body towards the inside of the box, so that the folded part closely adheres to the inner wall surface of the basic box body.

3. The preparation method of the vacuum insulation panel according to claim 2, wherein, The first core material is provided with a first preset folding seam, the surface core material includes several core material blocks, and second preset folding seams are formed at intervals between the core material blocks.

4. The preparation method of the vacuum insulation panel according to claim 3, characterized in that, The first core material includes: a slit core material and a base core material. The unfolded areas of the slit core material and the base core material are the same. The part of the slit core material not covered by the surface core material is provided with the first preset folding seam. The base core material is a seamless core material. The slit core material is connected to the base core material, and the surface core material is connected to the slit core material.

5. The preparation method of the vacuum insulation panel according to claim 3, wherein, The step of stacking the first core material and the surface core material in sequence to form an integrated core material includes: Placing the core material blocks on one side of the first core material provided with the first preset folding seam; Adjusting the gaps between the core material blocks; Connecting the core material blocks and the first core material.

6. The preparation method of the vacuum insulation panel according to claim 3, characterized in that, Horizontally and vertically dividing the first core material into three parts each to form nine regions. Among them, in the first row from left to right are the first region, the second region, and the third region. In the second row from left to right are the fourth region, the fifth region, and the sixth region. In the third row from left to right are the seventh region, the eighth region, and the ninth region. The core material blocks are arranged in the second region, the fourth region, the fifth region, the sixth region, and the eighth region. The first region, the third region, the seventh region, and the ninth region are all provided with the first preset folding seams facing the fifth region.

7. The method for preparing a vacuum insulation panel according to any one of claims 1 to 6, characterized in that, The step of putting the integrated core material into a barrier bag, evacuating the air, and then heat-sealing the edge of the barrier bag includes: Putting the integrated core material, an oxygen absorber, and a desiccant into the barrier bag together. The oxygen absorber and the desiccant are placed in the non-folded area of the integrated core material; Evacuating the air inside the barrier bag; Sealing the edge of the barrier bag; Performing a hemming treatment on the edge of the heat-sealed barrier bag.

8. A vacuum insulation panel, characterized in that, Prepared by the preparation method of the vacuum insulation panel according to any one of claims 1 to 7, including: A box structure, which includes a basic box body formed by folding the surface core material and a multi-layer coating structure formed by the extended part of the first core material covering the inside and outside of the basic box body; A closed accommodation cavity is formed inside the box structure.

9. A box liner, characterized in that, Prepared by the preparation method of the vacuum insulation panel according to any one of claims 1 to 7, the box liner includes a basic box body formed by folding a surface core material and a multi-layer coating structure formed by extending parts of a first core material covering the inside and outside of the basic box body; A sealed accommodation cavity is formed inside the box liner.

10. A refrigeration device, characterized in that, It includes: A box body, with a cavity provided inside the box body; The box liner according to claim 9, installed in the cavity.

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