3D heat preservation container

Abstract

The utility model provides a 3D heat preservation container which comprises a box cover and a box body. The box cover comprises a core material, a first barrier film, a first drying agent, a first getter and a first sealing film; the drying agent and the getter are arranged in the first core material, and the first barrier film wraps the first core material; a first extraction opening is formed in the box cover, and the first sealing film is used for sealing the first extraction opening; the box body comprises an inner cavity, a second core material, a second barrier film, a second getter, a second drying agent and a second sealing film; the second core material wraps the outer side of the inner cavity, the second getter and the drying agent are arranged in the second core material, the second barrier film wraps the outer side of the second core material, the box body is provided with a second extraction opening, and the second sealing film is used for sealing the second extraction opening.

Description

Technical Field

[0001] The utility model relates to the field of thermal insulation materials, in particular to a 3D thermal insulation container. Background Art

[0002] With the rapid economic development of today's society, the continuous consumption of natural resources has led to the increasing scarcity of non-renewable energy, and the concept of energy conservation and consumption reduction has become increasingly important. Vacuum insulation panels (VIP) are products formed by filling a barrier bag with a reserved bag opening with core material, placing a desiccant and a getter, and then evacuating the bag in a vacuum chamber, and then heat-sealing the bag opening and folding the edges. Vacuum insulation panels can effectively avoid heat transfer caused by air convection, thereby greatly reducing its thermal conductivity, and the thermal conductivity coefficient can reach less than 0.005W (m·k). It can be seen that vacuum insulation panels have become a major focus of research in the field of energy conservation.

[0003] When vacuum insulation panels are applied to insulation containers such as refrigerators, freezers, and cold chains, they need to be placed in the doors and walls of such containers to enhance the insulation effect of the entire container. However, when the vacuum insulation panels are spliced ​​on multiple sides, the marginal effect is significant, or when the vacuum insulation panels are curled and spliced, the panel body will be damaged, which will affect the insulation performance of the entire container to a certain extent.

[0004] In addition, when performing the vacuum packaging process of the vacuum insulation panel, a larger vacuum chamber and a subsequent more complicated process of folding the edges and corners of the panel are required, which is not conducive to improving production efficiency. Utility Model Content

[0005] In order to overcome the defects of the prior art mentioned above, the technical problem to be solved by the present invention is: how to reduce the marginal effect of the thermal insulation container and realize a simple vacuuming process to directly form a 3D thermal insulation container.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a 3D thermal insulation container, comprising: a box cover and a box body;

[0007] The box cover comprises a first core material, a first barrier film, a first desiccant, a first getter and a first sealing film; the desiccant and the getter are placed inside the first core material, and the first barrier film is wrapped around the outside of the first core material; a first air extraction port is provided on the box cover, and the first sealing film is used to seal the first air extraction port;

[0008] The box body includes an inner cavity, a second core material, a second barrier film, a second getter, a second desiccant, and a second sealing film; the second core material is wrapped around the outside of the inner cavity, the second getter and the desiccant are placed inside the second core material, the second barrier film is wrapped around the outside of the second core material, the box body has a second air extraction port, and the second sealing film is used to seal the second air extraction port.

[0009] In a preferred embodiment: the areas of the first barrier film and the second barrier film are respectively larger than the areas of the box cover or the outer covering surface of the box.

[0010] In a preferred embodiment: the inner cavity is an integrally formed metal container; the inner cavity has a curling edge and a cavity wall, and a groove formed between the curling edge and the cavity wall is used to fix the second core material.

[0011] In a preferred embodiment: a heat sealing layer is bonded to the outer side of the curled edge via an adhesive layer.

[0012] In a preferred embodiment, the width of the heat-sealing layer is the same as the outer width of the curling edge.

[0013] In a preferred embodiment: the adhesive layer is a metal / plastic adhesive or a plastic / plastic adhesive.

[0014] In a preferred embodiment, the first barrier film and the second barrier film are respectively multi-layer barrier films composited with aluminum and having heat-sealing layers on both sides.

[0015] In a preferred embodiment, the first sealing film and the second sealing film are barrier films with self-adhesive properties on one side or barrier films with a heat-sealed surface on one side.

[0016] In a preferred embodiment: the material of the first core material and the second core material is one or more of expanded perlite, fumed silica, glass fiber, polyurethane, ceramic fiber, silicon carbide fiber, rock wool, and phenolic resin.

[0017] In a preferred embodiment: the first air exhaust port and the second air exhaust port are respectively arranged at any plane position of the box cover and the box body, and their shapes are circular or polygonal, and the areas of the first air exhaust port and the second air exhaust port are respectively smaller than the areas of the first sealing film and the second sealing film.

[0018] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0019] The utility model provides a 3D thermal insulation container, in which the core material is directly compounded to the outside of the box body through a barrier film, thereby avoiding the marginal effect caused by the splicing of traditional vacuum insulation panels and achieving excellent overall thermal insulation effect; a method of directly evacuating a vacuum chamber through a preset opening can be used to break away from the constraints of a vacuum chamber, and the operation is simple, the operation process is reduced, and the production efficiency is improved; the structure can be formed to prepare thermal insulation boxes of various structures, and the designability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the box cover described in the utility model;

[0021] Figure 2 It is a cross-sectional view of the box body described in the utility model;

[0022] Figure 3 for Figure 2 A magnified image of point A;

[0023] Figure 4 It is a schematic diagram of vacuuming the box cover described in the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships described in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0027] According to the attached Figures 1 to 4 A 3D special-shaped heat-insulating container comprises a box cover 1 and a box body 2, wherein the box cover 1 comprises a first core material 11, a first barrier film 12, a first desiccant 13, a first getter 14 and a first sealing film 15, wherein the first desiccant 13 and the first getter 14 are placed inside the first core material 11, and the first core material 11 is completely covered by the first barrier film 12, and a first air extraction port 16 is provided at the center of the top of the box cover 1, and after the first sealing film 15 is subjected to temperature and pressure by a pressing plate 32 of a vacuum pumping device 3, the first air extraction port 16 is sealed by a self-adhesive surface or a heat-sealing surface of the first sealing film 15.

[0028] The pressing plate 32 in the vacuum device 3 is a device that can be extended and positioned up and down. When vacuuming, the pressing plate 32 rises. After the interior is evacuated to the required vacuum degree, the pressing plate 32 is pressed down to achieve sealing of the sealing film 15 on the air outlet 16. The operation is simple.

[0029] The box body is composed of an inner cavity 21, a second core material 22, a second barrier film 23, a second getter 24, a second desiccant 25, an adhesive layer 26, a heat sealing layer 27 and a second sealing film 28. The outer side of the inner cavity 21 is wrapped by the second core material 22, the second getter 24 and the second desiccant 25 are placed inside the second core material 22, the second barrier film 23 covers the outer side of the second core material 22, and a second air extraction port 29 is provided at the center of the bottom of the box body 1. The second sealing film 28 is used to seal the second air extraction port 29, and the sealing method is the same as that of the box cover 1.

[0030] In this embodiment, the inner cavity 21 is an integrally formed metal container having a curling edge 211 and a cavity wall 212. The card slot formed between the curling edge 211 and the outer side of the cavity wall 212 can fix the core material 22. In addition, a heat sealing layer 27 is prefabricated and bonded to the outer side of the curling edge 211 through an adhesive layer 26. The adhesive layer 26 is PU glue, and the heat sealing layer 27 is PE material.

[0031] The first barrier film 12 and the second barrier film 23 are both multi-layer composite barrier films having PE layers on both sides, and the film structure is PE-aluminum foil-nylon-PET-PE.

[0032] The areas of the first barrier film 12 and the second barrier film 23 are cut to be larger than the areas of the outer covering surfaces of the box cover 1 and the box body 2, respectively, so that the remaining parts after the box cover 1 or the box body 2 are completely covered can be melt-sealed by overlapping the edges and heating with an external heat source.

[0033] In this embodiment, the first sealing film 15 and the second sealing film 28 are both barrier films having a PE layer on one side.

[0034] In this embodiment, the first core material 11 is glass fiber felt, and the second core material 22 is made of expanded perlite.

[0035] Furthermore, the first air inlet 16 and the second air inlet 29 are circular in shape.

[0036] The box cover 1 uses a vacuum device 3 to evacuate the first air suction port 16 to a vacuum inside, and the vacuuming method is:

[0037] S1: Use double-sided tape to simply bond the non-heat-sealing surface of the first sealing film 15 to the lower surface of the pressure plate 32 in the exhaust joint 31 , and the heat-sealing surface of the first sealing film 15 faces the first exhaust port 16 .

[0038] S2: Place the vacuum connector 31 just above the first vacuum port 16, seal the bottom edge of the vacuum connector 31 with the surface of the box cover 1 with the sealing ring 33, open the valve to connect the connector with the vacuum pump to achieve vacuum.

[0039] S3: After the exhaust is completed, the pressing plate 32 is heated to 150° C., the pressing plate 32 is pressed down, and the pressure is maintained for 10 seconds. The first exhaust port 16 is bonded and sealed, and the pressing plate 32 is lifted.

[0040] The non-heat-sealing surface of the first sealing film 15 is bonded to the lower surface of the pressing plate 32 by double-sided tape, so that the first sealing film 15 is not easy to fall off during vacuuming. Its bonding strength is much smaller than the bonding strength between the heat-sealing surface and the first barrier film 12. After maintaining the pressure, the pressing plate 32 is lifted. The principle of the sealing film with a heat-sealing layer is similar. In this way, the first sealing film 15 can be separated from the pressing plate 32 without affecting the sealing effect of the box cover 1.

[0041] Similarly, the vacuuming method of the box body 2 is the same as that of the box cover 1, and will not be described in detail in this embodiment.

[0042] The 3D special-shaped insulation container manufactured in this embodiment is a cylindrical insulation box, which greatly reduces the marginal effect caused by the overlap of the vacuum insulation panel, has excellent insulation effect, good barrier properties, simple vacuuming method, and high production efficiency. In addition to the cylindrical shape, it can also be a cube or other irregular shape required by actual use.

[0043] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A 3D thermal insulation container, characterized in that include: Box cover and box body; The box cover comprises a first core material, a first barrier film, a first desiccant, a first getter and a first sealing film; the desiccant and the getter are placed inside the first core material, and the first barrier film is wrapped around the outside of the first core material; a first air extraction port is provided on the box cover, and the first sealing film is used to seal the first air extraction port; The box body includes an inner cavity, a second core material, a second barrier film, a second getter, a second desiccant, and a second sealing film; the second core material is wrapped around the outside of the inner cavity, the second getter and the desiccant are placed inside the second core material, the second barrier film is wrapped around the outside of the second core material, the box body has a second air extraction port, and the second sealing film is used to seal the second air extraction port.

2. A 3D thermal insulation container according to claim 1, characterized in that: The areas of the first barrier film and the second barrier film are respectively larger than the areas of the box cover or the outer covering surface of the box.

3. A 3D thermal insulation container according to claim 1, characterized in that: The inner cavity is an integrally formed metal container; the inner cavity has a curling edge and a cavity wall, and the clamping groove formed between the curling edge and the cavity wall is used to fix the second core material.

4. A 3D thermal insulation container according to claim 3, characterized in that: The outer side of the curling edge is bonded with a heat sealing layer through an adhesive layer.

5. A 3D thermal insulation container according to claim 4, characterized in that: The width of the heat-sealing layer is the same as the outer width of the curling edge.

6. A 3D thermal insulation container according to claim 4, characterized in that: The adhesive layer is a metal / plastic adhesive or a plastic / plastic adhesive.

7. The 3D thermal insulation container according to claim 1, characterized in that: The first barrier film and the second barrier film are respectively multi-layer barrier films composited with aluminum and having heat-sealing layers on both sides.

8. The 3D thermal insulation container according to claim 1, characterized in that: The first sealing film and the second sealing film are barrier films with self-adhesive properties on one side or barrier films with a heat-sealed surface on one side.

9. The 3D thermal insulation container according to claim 1, characterized in that: The first air extraction port and the second air extraction port are respectively arranged at any plane position of the box cover and the box body, and their shapes are circular or polygonal, and the areas of the first air extraction port and the second air extraction port are respectively smaller than the areas of the first sealing film and the second sealing film.

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