A thermal insulation unit, metal composite thermal insulation board

Abstract

The utility model provides a kind of heat preservation unit, metal composite insulation board belongs to heat preservation technical field, comprising: shell, shell includes first metal panel and second metal panel, the edge of first metal panel is sealed with the edge of second metal panel Connection to enclose and form vacuum cavity, vacuum cavity is equipped with getter;Core material, core material is located in vacuum cavity;At least one metal panel in first metal panel and second metal panel is equipped with guide portion, to make first metal panel and second metal panel assembly. Advantageous effect: by setting guide portion on metal panel, the assembly of two metal panels is realized, reduce the time required for assembly, improve product yield ratio;At the same time, by setting core material in vacuum cavity, provide additional strength support for shell, avoid the deformation problem of metal panel, so that metal panel can realize thin and light;In addition, the thin type of metal panel can further reduce heat loss, improve heat preservation performance.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation technology, and in particular to a thermal insulation unit and a metal composite thermal insulation board. Background Technology

[0002] Insulation boards, with their superior performance, are widely used in numerous fields. In home appliances, freezers, refrigerators, and other equipment utilize insulation boards to effectively reduce energy loss and maintain a stable low-temperature environment. In cold chain transportation, refrigerated trucks and other equipment use insulation boards to ensure that goods remain at suitable temperatures during transport, thus protecting their quality. Furthermore, in industrial settings, insulation boards are used in high-temperature flues, steam pipes, and furnaces to reduce heat loss and improve energy efficiency. Simultaneously, in the construction industry, insulation boards are extensively used in building walls, floors, and roofs to create a warm and comfortable living environment indoors.

[0003] However, traditional insulation units and boards are complex to assemble and require a long assembly time, which is not conducive to practical construction and application. At the same time, the metal panels used in traditional insulation units have a concave-convex surface design to provide support and prevent panel deformation, which limits the thickness of the insulation board and makes it difficult to achieve the development requirements of thinner and lighter insulation boards. In addition, the interior of the insulation unit is in a vacuum state, and heat cannot be transferred between the metal panels from the front to the back through conduction or convection. The thermal bridges around the metal panels can transfer heat, but due to the concave-convex surface design, the thicker the metal panel, the more heat will be transferred to the back through thermal bridges, increasing heat loss and affecting the insulation performance of the insulation board to some extent. Utility Model Content

[0004] To solve the above technical problems, this utility model provides a heat preservation unit; on the other hand, it also provides a metal composite heat preservation board.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] On the one hand, a thermal insulation unit is provided, comprising:

[0007] The outer casing includes a first metal panel and a second metal panel, the edges of the first metal panel and the edges of the second metal panel are sealed together to form a vacuum cavity, and a getter is provided inside the vacuum cavity;

[0008] Core material, which is located inside the vacuum cavity;

[0009] At least one of the first metal panel and the second metal panel is provided with a guide portion to assemble the first metal panel and the second metal panel.

[0010] Preferably, the guide portion is a first guide portion, which is formed by bending and extending from part or all of the edge of one of the first metal panels and the second metal panel toward the vacuum cavity, so that the first metal panel and the second metal panel are embedded and assembled.

[0011] Preferably, the first guide portion is in the shape of an R-curve.

[0012] Preferably, the guide portion is a second guide portion, which is formed by bending and extending from the edge of at least one of the first metal panel and the second metal panel away from the vacuum cavity.

[0013] Preferably, the second guide portion includes: a first fitting portion formed by bending and extending from the edge of the first metal panel away from the vacuum cavity, and a second fitting portion formed by bending and extending from the edge of the second metal panel away from the vacuum cavity;

[0014] The first bonding portion and the second bonding portion are rolled and welded to assemble the first metal panel and the second metal panel.

[0015] Preferably, the first bonding portion and the second bonding portion are bonded to each other; or

[0016] At least one of the first bonding portion and the second bonding portion is disposed at an angle relative to each other.

[0017] Preferably, at least one of the first metal panel and the second metal panel has a coating on its surface, the coating being either paint or powder.

[0018] On the other hand, a metal composite insulation board is also provided, including a body and at least one insulation unit as described above disposed inside the body.

[0019] Preferably, the body comprises:

[0020] The first plate body has a first engaging part;

[0021] The second plate body has a second engaging part that cooperates with the first engaging part. The second engaging part cooperates with the first engaging part to place the heat preservation unit in the space enclosed by the first plate body and the second plate body.

[0022] Preferably, a filler is provided between the main body and the insulation unit.

[0023] The advantages or beneficial effects of this utility model's technical solution are as follows:

[0024] This invention enables the assembly of two metal panels by setting a guide on the metal panel, reducing the assembly time and improving the product yield. At the same time, by setting a core material in the vacuum cavity, it provides additional strength support for the outer shell, avoiding deformation of the metal panel and enabling the metal panel to be thinner and lighter. In addition, the thinning of the metal panel can further reduce heat loss and improve thermal insulation performance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the heat preservation unit in the preferred embodiment 1 of this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of the heat preservation unit in the preferred embodiment 1 of this utility model;

[0027] Figure 3 In the preferred embodiment 1 of this utility model, Figure 2 Enlarged schematic diagram of the metal panel assembly at point A;

[0028] Figure 4 This is a schematic diagram of the structure of the heat preservation unit in the preferred embodiment 2 of this utility model;

[0029] Figure 5 This is a cross-sectional schematic diagram of the heat preservation unit in the preferred embodiment 2 of this utility model;

[0030] Figure 6 In the preferred embodiment 2 of this utility model, Figure 5 Enlarged schematic diagram of the metal panel structure at point B;

[0031] Figure 7 This is a schematic diagram of the structure of the metal composite insulation board in the preferred embodiment 3 of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the first plate body in the preferred embodiment 3 of this utility model;

[0033] Figure 9 This is an enlarged schematic diagram of the structure of the first engaging part at point C on the first plate body in the preferred embodiment 3 of this utility model;

[0034] Figures 10A-10B This is a schematic diagram of the second plate body from different perspectives in the preferred embodiment 3 of this utility model;

[0035] Figure 11 This is a schematic diagram of the assembly of the first plate body and the heat preservation unit in the preferred embodiment 3 of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Metal composite insulation board; 10. Main body; 20. Insulation unit;

[0038] 101. First plate body; 1011. First engaging part; 10111. Limiting block; 10112. Locking block; 1012. First rib; 102. Second plate body; 1021. Second engaging part; 10211. Locking groove; 1022. Second rib;

[0039] 21. Outer shell; 211. First metal panel; 212. Second metal panel; 22. Getter; 23. Core material; 24a. First guide portion; 241. First bonding portion; 242. Second bonding portion; 24b. Second guide portion; 243. R-arc; 25. Weld. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0043] Example 1

[0044] See Figure 1 , Figure 2 and Figure 3 In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the prior art, a heat preservation unit 20 is provided, comprising:

[0045] The outer casing 21 includes a first metal panel 211 and a second metal panel 212. The edge of the first metal panel 211 and the edge of the second metal panel 212 are sealed together to form a vacuum chamber. A getter 22 is provided inside the vacuum chamber.

[0046] Core material 23 is located inside the vacuum chamber;

[0047] At least one of the first metal panel 211 and the second metal panel 212 is provided with a guide portion to assemble the first metal panel 211 and the second metal panel 212.

[0048] Specifically, in the design and application of traditional insulation boards, in order to prevent panel deformation, metal panels with concave and convex designs are usually used to provide support, which limits the thickness design of the insulation board and makes it difficult to achieve thinner and lighter insulation boards.

[0049] In this embodiment, by providing a core material 23 within the vacuum chamber, the core material 23 can provide additional strength support for the outer shell 21. Under vacuum conditions, there is no need to rely on uneven surfaces to support the metal panel, thereby avoiding deformation of the metal panel. Due to the supporting effect of the core material 23, the thickness of the metal panel can be designed to be thinner and lighter, thus achieving thinning and weight reduction.

[0050] Due to the filling effect of the core material 23, the gap between the two metal panels in the cavity is reduced, which is more conducive to vacuuming operation and can improve the vacuum yield.

[0051] Based on the principle of heat transfer, the insulation unit 20 transfers heat between the metal panels from front to back through internal vacuum conduction or convection. Thermal bridges exist around the metal panels, allowing heat to be transferred. Furthermore, there is a clear correlation between the thickness of the metal panels and the amount of heat transfer: the thicker the metal panel, the more heat is transferred to the back side through thermal bridges; conversely, the thinner the metal panel, the less heat is transferred. The thermal conductivity of a material is a fixed physical property, and for metal composite insulation boards, the thermal conductivity of the metal material is relatively high. Therefore, reducing the amount of metal used can lower the thermal conductivity of the metal composite insulation board.

[0052] In this embodiment, the supporting effect of the core material replaces the traditional uneven design of the metal panel, achieving a thinner metal panel. This thinner metal panel results in a lower thermal conductivity for the metal composite insulation board, further reducing heat loss and thus improving insulation efficiency.

[0053] More specifically, the first metal panel 211 and the second metal panel 212 are made of metal, and different metal materials can be selected according to the practical application, such as SUS304, titanium (Ti), and galvanized sheet. The thickness of the first metal panel 211 and the second metal panel 212 is between 0.1mm and 2.0mm, and the thickness of their thermal bridge section is related to the thermal conductivity of the insulation board. The thinner the thickness, the lower the thermal conductivity, and the better the insulation performance.

[0054] More specifically, due to the supporting role of the core material, the first metal panel 211 and the second metal panel 212 can be flat panels. Flat metal panels achieve panel thinning, simplify the manufacturing process, and improve production efficiency; moreover, the appearance is flatter, enhancing the overall aesthetics.

[0055] Of course, in practical applications, the first metal panel 211 and the second metal panel 212 can also be curved panels, bent panels or irregularly shaped panels to meet some special application requirements.

[0056] More specifically, the getter 22 is welded and fixed to the inner surface of the first metal panel 211 or the second metal panel 212 to adsorb the inert gas remaining in the cavity after vacuuming.

[0057] Conventional gas adsorbents are typically activated at temperatures above 500°C. This embodiment uses a low-temperature getter, with the main material of the low-temperature getter 22 being a zirconium-based alloy. It can be activated at 400°C, avoiding damage to the internal core material 23 due to high temperatures.

[0058] The getter can be activated at a single point. A laser is used to heat the getter at a single point, avoiding heating other areas of the insulation board and preventing deformation and damage.

[0059] More specifically, core material 23, as the core material support layer, can be selected from fiber core materials (such as glass fiber), granular core materials, foam core materials, or composite core materials. Fiber core materials are composed of numerous interwoven fine fibers, enabling them to effectively resist external impacts and possessing good flexibility and stress dispersion capabilities; they also exhibit certain sound absorption and heat insulation properties. Granular core materials consist of numerous tiny particles with gaps between them, allowing for weight reduction while maintaining sufficient strength, and providing good energy absorption. Foam core materials are materials with internal micropores, exhibiting light weight and excellent heat insulation performance; moreover, the internal pores of foam core materials can prevent heat transfer. Composite core materials combine two or more different types of core materials through specific processes. Depending on specific application requirements (such as high requirements for thermal insulation, strength, and fire resistance), the proportions and combinations of different core materials can be adjusted, integrating the advantages of various core materials to achieve optimal performance.

[0060] In a preferred embodiment, such as Figure 2 As shown, the guide portion is a second guide portion 24a, which is formed by bending and extending from the edge of at least one of the first metal panels 211 and the second metal panel 212 away from the vacuum cavity.

[0061] In a preferred embodiment, such as Figure 3 As shown, the second guide portion 24a includes: a first fitting portion 241 formed by bending and extending from the edge of the first metal panel 211 away from the vacuum cavity, and a second fitting portion 242 formed by bending and extending from the edge of the second metal panel 212 away from the vacuum cavity.

[0062] The first bonding portion 241 and the second bonding portion 242 are rolled and welded to assemble the first metal panel 211 and the second metal panel 212.

[0063] In this embodiment, both the first metal panel 211 and the second metal panel 212 adopt a box-shaped structure with one side open. The box-shaped openings of the two metal panels are joined and welded together to form a sealed vacuum cavity.

[0064] The box-shaped opening edges of the two metal panels extend outward to form second guide portions 24a. Specifically, the first metal panel 211 extends outward to form a first mating portion 241, and the second metal panel 212 extends outward to form a second mating portion 242. During assembly and welding, by providing the mating portions that extend outward to cooperate, the mating area of ​​the first metal panel 211 and the second metal panel 212 can be increased, avoiding the problem of easy weld breakage when welding the two metal panels due to the thin wall thickness of the box-shaped structure. The mating portions provide a larger welding area, making the welding process more stable and reliable, and greatly reducing the welding defect rate.

[0065] The first metal panel 211 and the second metal panel 212 can be quickly spliced ​​and sealed using a roll welding process. During roll welding, the outward-extending bonding portions of the metal panels are welded by rolling, resulting in a more uniform and continuous welding process, improved weld yield, reduced welding time, increased production efficiency, and lower production costs.

[0066] In a preferred embodiment, the first fitting portion 241 and the second fitting portion 242 are fitted together; or

[0067] At least one of the first fitting portion 241 and the second fitting portion 242 is disposed at an angle relative to each other.

[0068] Specifically, in order to ensure the flatness of the joint between the two metal panels, both the first bonding part 241 and the second bonding part 242 can be set horizontally.

[0069] Furthermore, considering that the insulation unit does not have high requirements for the flatness of the metal panel joints, the bonding part can also be set up such that at least one bonding part is tilted at a certain angle. Specifically, the following situations exist:

[0070] In scenario one, the first bonding part 241 is set horizontally, while the second bonding part 242 is tilted at a certain angle relative to the first bonding part 241.

[0071] In scenario two, the second bonding part 242 is set horizontally, and the first bonding part 241 is tilted at a certain angle relative to the second bonding part 242.

[0072] In scenario three, both the first fitting part 241 and the second fitting part 242 are tilted at a certain angle.

[0073] Regardless of the type of bonding arrangement used, the angled design during the mating process allows the first bonding part 241 and the second bonding part 242 to generate a certain squeezing effect upon contact. This squeezing effect not only makes the mating parts tighter but also adjusts their position to a certain extent, ensuring more accurate alignment and thus improving welding quality. During welding, the tight squeezing allows the welding material to better fill the gaps at the mating parts, increasing the welding yield. Simultaneously, it ensures the sealing of the welding position and guarantees the airtightness of the outer shell 21, preventing outside air from entering the shell 21 and thus contributing to maintaining the vacuum level of the vacuum chamber. In practical applications, a good vacuum level reduces heat transfer and improves insulation.

[0074] Furthermore, the tilt angle can be in the range of 1° to 10°, and more preferably, the tilt angle is 5°.

[0075] In a preferred embodiment, at least one of the first metal panel 211 and the second metal panel 212 has a coating (not shown in the figure) on its surface, and the coating is any one of paint and powder.

[0076] In this embodiment, the coating can be applied to the surface of the first metal panel 211 and the second metal panel 212 by spraying. Of course, in addition to spraying, the coating can also be applied to the surface of the metal panel by brushing, dipping, electrophoretic coating, etc.

[0077] The coating can be made of materials with properties such as high temperature resistance, good weather resistance, and high durability. For example, paint, powder coatings, and other materials can be used.

[0078] More specifically, one of the metal panels, the first metal panel 211 and the second metal panel 212, may have a pre-installed structure for vacuum extraction. For example... Figure 1 As shown, a weld 25 is formed by laser cutting on the second metal panel 212. During assembly, the first metal panel 211 and the second metal panel 212 are welded together, then the inside of the housing is evacuated, and finally the weld 25 is welded.

[0079] Weld 25 can be one or more, and its shape can be circular, square, oval, arc, wavy, or even customized according to customer preferences. Actual testing has confirmed that the surface area of ​​weld 25 must be greater than 2.0 square millimeters to avoid unstable insulation performance due to an insufficient surface area.

[0080] The weld can also be made into a round hole shape, through which the gas between the inner and outer layers is pumped out, creating a vacuum inside.

[0081] Of course, in practical applications, weld 25 can also be set on the first metal panel 211.

[0082] Furthermore, the preparation method of the above-mentioned heat preservation unit 20 includes the following steps:

[0083] Step 1: Prepare metal panels using mechanical processing methods such as die stamping;

[0084] First, prepare two metal panels. Laser-cut one of the metal panels to form a weld seam 25. After cutting, clean and degrease both metal panels to improve their cleanliness.

[0085] The weld 25 can be one or more, and its shape can be circular, square, elliptical, arc, wavy or custom shape. The surface area of ​​the weld 25 must be greater than 2.0 square millimeters.

[0086] Step 2: Fix the getter to the inner wall of one of the metal panels by spot welding;

[0087] Step 3: Cut the core material 23 according to the space dimensions inside the metal panel; the thickness of the core material 23 should be 3mm-5mm greater than the thickness of the metal panel.

[0088] Step 4: Place one metal panel upside down on the lower mold of the mold, place the cut core material inside the metal panel, and then place the other metal panel on the upper mold of the mold. Then press and fix them together using the mold. The two metal panels are at a 5° angle to ensure a tight fit. Then place them in a rolling mill to rotate and roll weld the edges, or seal the weld seams around the edges.

[0089] Step 5: Cover the weld seam 25 of the metal panel with the vacuum pump, and seal the covering with a silicone gasket to ensure good airtightness; perform a vacuum pump operation inside the panel cavity to make the vacuum level inside the two metal panels less than 10. 2 .

[0090] Step 6: Gas between the wall layers is drawn through weld 25. After the pressure is drawn, weld 25 is scanned through a glass mirror under vacuum to identify its position and shape, and then a welding command is generated to weld weld 25. While maintaining the internal vacuum, sheet metal particles are melted and fixed to the weld of the round hole to achieve vacuum sealing. Laser welding is used to completely melt two identical materials together at high temperature. This sealing method has high tightness.

[0091] Step 7: Use a laser to heat the getter position at a single point. At 400°C, the getter 22 can be activated to adsorb the inert gas and stains that have not been removed between the wall layers.

[0092] Step 8: Use a clamping fixture to press the welded edges of the metal panel, then suspend it, and finally spray the surface of the vacuum insulation unit 20 to form a coating.

[0093] The insulation unit 20 prepared using the above steps has a reasonable structural design that ensures good flatness. Regarding insulation performance, the thermal conductivity of traditional insulation units is between 0.03 W / m·K and 0.04 W / m·K, while the thermal conductivity of the insulation unit 20 prepared in Example 1 is only 0.002 W / m·K to 0.003 W / m·K, which is more than 10 times lower than that of traditional materials, demonstrating excellent insulation performance.

[0094] Example 2

[0095] See Figure 4 , Figure 5 and Figure 6 The insulation unit 20 provided in Embodiment 2 differs from that in Embodiment 1 in that the assembly method is changed by adjusting the structure of the joint between the two metal panels. Specifically, an embedded assembly method is used instead of roll welding assembly, simplifying the assembly operation. Other structures are the same as in Embodiment 1 and will not be described again here.

[0096] In a preferred embodiment, the guide portion is a first guide portion 24b, which is formed by bending and extending part or all of the edge of one of the metal panels, the first metal panel 211 and the second metal panel 212, toward the vacuum cavity so that the first metal panel 211 and the second metal panel 212 are embedded and assembled.

[0097] In a preferred embodiment, the first guide portion 24b is in the shape of an R-curve.

[0098] Specifically, in this embodiment, both the first metal panel 211 and the second metal panel 212 adopt a box-shaped structure with an opening on one side. For example... Figure 6 As shown, the box-shaped opening of the second metal panel 212 is bent inward and extended to form a first guide portion 24b. The first guide portion 24b preferably adopts an R-arc 243 structure.

[0099] The two metal panels are assembled in a snap-fit ​​configuration, with no edge-extending mating parts, resulting in a smooth surface and ease of use. During assembly, the box-shaped opening of the second metal panel 212 aligns with the box-shaped opening of the first metal panel 211. At this point, the R-arc 243 of the second metal panel 212 fits into the box-shaped opening of the first metal panel 211. The guiding effect of the R-arc 243 facilitates the snap-fit ​​insertion of the two metal panels, enabling rapid assembly, reducing assembly time, minimizing product defects caused by improper operation during assembly, and ultimately improving the product yield.

[0100] In addition, the guiding structure of R-arc 243 can increase the amount of solder filling during the welding process, making the welded part stronger, improving the welding yield, and facilitating construction and assembly applications.

[0101] Of course, in practical applications, R-arc 243 can also be set on the first metal panel 211.

[0102] Example 3

[0103] See Figure 7 , Figure 8 , Figure 9 , Figure 10A , Figure 10B and Figure 11 The invention also provides a metal composite insulation board 100, including a body 10 and at least one insulation unit 20 as described above disposed inside the body 10.

[0104] Specifically, the main body 10 surrounds the outer periphery of the insulation unit 20, meaning the insulation unit 20 is located inside the main body 10. Inside the main body 10, there can be one, two, three, or more insulation units 20.

[0105] The heat insulation unit 20 inside the main body 10 can be the heat insulation unit 20 shown in Embodiment 1 above, or it can be the heat insulation unit 20 shown in Embodiment 2 above. Of course, the heat insulation unit 20 of Embodiment 1 and the heat insulation unit 2 of Embodiment 2 can also be combined.

[0106] In a preferred embodiment, such as Figure 7 As shown, the main body 10 includes a first plate body 101 and a second plate body 102. The first plate body 101 and the second plate body 102 cooperate with each other through a snap-fit ​​structure to place the heat preservation unit 20 in the space enclosed by the first plate body 101 and the second plate body 102.

[0107] In a preferred embodiment, such as Figure 8 As shown, the first plate body 101 is provided with a first engaging portion 1011. For example... Figure 9As shown, the first engaging portion 1011 includes two limiting blocks 10111 and a locking block 10112 disposed between the two limiting blocks 10111. The two limiting blocks 10111 serve a limiting function, which can position the second engaging portion 1021 on the second plate body 102 to ensure precise docking of the two plate bodies.

[0108] like Figure 10A As shown, the second plate body 102 is provided with a second engaging part 1021 that cooperates with the first engaging part 1011. The second engaging part 1021 and the first engaging part 1011 cooperate with each other to place the heat preservation unit 20 in the space enclosed by the first plate body 101 and the second plate body 102.

[0109] like Figure 10B As shown, the second engaging part 1021 is a sheet-like structure with a slot 10211. During the assembly process of the first plate body 101 and the second plate body 102, the locking block 10112 is engaged in the slot 10211 to realize the snap-fit ​​assembly of the first plate body 101 and the second plate body 102.

[0110] like Figure 8 As shown, the inner wall of the first plate body 101 is also provided with a plurality of first ribs 1012 distributed horizontally and vertically, thereby enhancing the structural strength of the first plate body 101 itself, making it less prone to deformation when subjected to force, and to a certain extent playing a role in separation and support, thereby improving the overall performance of the first plate body 101.

[0111] like Figure 10B As shown, the second plate body 102 is also provided with a plurality of second ribs 1022 distributed horizontally and vertically, thereby enhancing the structural strength of the second plate body 102 itself, making it less prone to deformation under stress, and to a certain extent playing a role in separation and support, thereby improving the overall performance of the first plate body 101.

[0112] Furthermore, the first engaging portion 1011, the first rib 1012, and the first plate body 101 are integrally formed; similarly, the second engaging portion 1021, the second rib 1022, and the second plate body 102 are integrally formed. This integral forming design reduces the connection points between components, improving the overall integrity and stability of the structure.

[0113] In a preferred embodiment, a filler (not shown in the figure) is provided between the main body 10 and the insulation unit 20. The filler may be a foaming agent. The foaming agent completely fills all six sides of the metal composite insulation board 100, improving the overall structural strength and stability of the board, enabling it to better maintain its shape and resist deformation and damage when subjected to external forces; at the same time, it can further enhance the sealing and insulation performance of the metal composite insulation board 100, reducing heat loss.

[0114] The assembly scheme of the above-mentioned metal composite insulation board 100 using polyurethane foam includes the following steps: First, the insulation unit 20 is placed in the foaming mold; then the foaming process is carried out, the raw material is injected into the mold and cured at 150°C for 15 minutes; then the hot pressing operation is carried out, the hot pressing parameters are set as follows: temperature 130°C, pressure 1.0MPa, and hot pressing time 12 minutes.

[0115] The above-mentioned metal composite insulation board 100 adopts a plastic foaming assembly scheme, which includes the following steps: First, the insulation unit 20 is placed inside the plastic component; then, the foaming material is injected into the interior of the plastic component; finally, a pressure of 0.8MPa is applied to the plastic component for extrusion, and then it is cured at room temperature for 15 minutes.

[0116] The metal composite insulation board body 10 possesses good strength and rigidity, making it resistant to damage during use and convenient for transportation and handling. Furthermore, body 10 is reusable, environmentally friendly, and pollution-free. The insulation unit 20 is externally clad in metal, offering excellent fire resistance; according to rock wool standards, its fire rating reaches Class A, ensuring durability and resistance to damage. Body 10 can be made of corrosion-resistant metal, offering good durability and weather resistance, with a service life exceeding 30 years. It also possesses non-absorbent properties, broadening its application range.

[0117] The advantages or beneficial effects of adopting the above technical solution are as follows: by setting a guide part on the metal panel, the assembly of two metal panels can be realized, reducing the assembly time and improving the product yield; at the same time, by setting a core material in the vacuum cavity, additional strength support is provided for the shell, avoiding deformation of the metal panel, so that the metal panel can be made thinner and lighter; in addition, the thinning of the metal panel can further reduce heat loss and improve thermal insulation performance.

[0118] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present utility model.

Claims

1. A heat preservation unit, characterized in that, include: The outer casing includes a first metal panel and a second metal panel, the edges of the first metal panel and the edges of the second metal panel are sealed together to form a vacuum cavity, and a getter is provided inside the vacuum cavity; Core material, which is located inside the vacuum cavity; At least one of the first metal panel and the second metal panel is provided with a guide portion to assemble the first metal panel and the second metal panel.

2. The heat preservation unit according to claim 1, characterized in that, The guide portion is a first guide portion, which is formed by bending and extending from part or all of the edge of one of the metal panels, the first metal panel and the second metal panel, toward the vacuum cavity, so that the first metal panel and the second metal panel are embedded and assembled.

3. The heat preservation unit according to claim 2, characterized in that, The first guide portion is in the shape of an R-curve.

4. The heat preservation unit according to claim 1, characterized in that, The guide portion is a second guide portion, which is formed by bending and extending from the edge of at least one of the first metal panel and the second metal panel away from the vacuum cavity.

5. The heat preservation unit according to claim 4, characterized in that, The second guide portion includes: a first fitting portion formed by bending and extending from the edge of the first metal panel away from the vacuum cavity, and a second fitting portion formed by bending and extending from the edge of the second metal panel away from the vacuum cavity; The first bonding portion and the second bonding portion are rolled and welded to assemble the first metal panel and the second metal panel.

6. The heat preservation unit according to claim 5, characterized in that, The first bonding portion and the second bonding portion are bonded to each other; or At least one of the first bonding portion and the second bonding portion is disposed at an angle relative to each other.

7. The heat preservation unit according to claim 1, characterized in that, The surface of at least one of the first metal panel and the second metal panel is provided with a coating, which is either paint or powder.

8. A metal composite insulation board, characterized in that, It includes a main body and at least one heat preservation unit as described in any one of claims 1-7 disposed inside the main body.

9. The metal composite insulation board according to claim 8, characterized in that, The body includes: The first plate body has a first engaging part; The second plate body has a second engaging part that cooperates with the first engaging part. The second engaging part cooperates with the first engaging part to place the heat preservation unit in the space enclosed by the first plate body and the second plate body.

10. The metal composite insulation board according to claim 8, characterized in that, A filler is provided between the main body and the insulation unit.

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