Heat preservation cover and heat preservation system

Abstract

The utility model discloses a heat preservation cover and a heat preservation system, and relates to the technical field of heat preservation, the heat preservation cover comprises a cover body and a metal reflecting film, the cover body is provided with an inner cavity and an opening communicated with the inner cavity and the outside, the cover body is formed by connecting a plurality of plate bodies, and the plate bodies are made of non-metal porous materials; and the metal reflecting film is arranged on the inner surface, facing the inner cavity, of each plate body. The heat preservation cover is simpler in structure, not prone to damage and beneficial to improving use reliability and prolonging the service life, further, the plate body is made of the non-metal porous material, has a small heat conductivity coefficient, can achieve a better heat preservation effect, and is matched with the reflection effect of the metal reflection film on heat radiation, so that the heat preservation effect is better. And the overall heat preservation effect of the heat preservation cover is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation technology, and in particular to a thermal insulation cover and thermal insulation system. Background Technology

[0002] In daily life, it is often necessary to keep objects warm to prevent them from cooling or heating up too quickly. For example, when the ambient temperature is low, food placed on the table after preparation will cool down quickly and may be cold by the time it is eaten.

[0003] Generally speaking, food transfers heat in three ways: first, through its own thermal radiation; second, through the direct conduction of heat from the plate to the table; and third, through thermal convection caused by the temperature difference between the food and the surrounding environment.

[0004] Common insulation technologies on the market involve fixing an aluminum foil to a specially shaped support to form a simple cover, and then adding a decorative soft cloth to the outside of the aluminum foil to wrap around the inside of the insulation cover. The broadband electromagnetic wave reflection properties of the aluminum foil can effectively block heat radiation, thus reflecting most of the heat radiation and solving the problem of heat radiation cooling of food with only a thin layer of aluminum foil. However, because the aluminum foil is too thin and the soft cloth is not thick enough (usually about 1mm), although it can reflect heat radiation overall, when the steam from the food heats the aluminum foil, it will cause heat conduction problems: the heated aluminum foil will generate new external heat radiation, and will also conduct heat to the outside air through the aluminum foil and the thin soft cloth, still causing the food temperature to drop rapidly, and the insulation effect is not significant enough.

[0005] In addition, there are electric heating plates, electric insulation covers or electric insulation boxes on the market that use electric heating to achieve heat preservation. However, these electrical devices consume electricity, have high costs, and require maintenance during use.

[0006] Therefore, it is necessary to improve traditional insulation covers (referring to insulation covers that do not require electricity) to achieve good insulation effects while saving energy and costs. Utility Model Content

[0007] The purpose of this invention is to provide a heat insulation cover and heat insulation system to improve their heat insulation effect.

[0008] To achieve the aforementioned objectives, this utility model provides, on the one hand, a heat-insulating cover, comprising:

[0009] A cover, having an inner cavity and an opening connecting the inner cavity to the outside, the cover being composed of multiple connected plates, the plates being made of a non-metallic porous material; and,

[0010] A metal reflective film is provided on the inner surface of each plate facing the inner cavity.

[0011] Furthermore, the material of the plate is polyester fiber, sponge, glass fiber or rock wool, and the material of the metal reflective film is aluminum, silver or gold.

[0012] Furthermore, the thickness of the plate is 4 to 24 mm, and the thickness of the metal reflective film is 0.01 to 3 mm.

[0013] Furthermore, the material of the plate is polyester fiber with a density of 100 kg / m³. 3 ~280kg / m 3 .

[0014] Furthermore, the plate and the metal reflective film are connected together by sewing; or,

[0015] The plate and the metal reflective film are joined together using hot melt adhesive; or...

[0016] The plate and the metal reflective film are connected together by an adhesive film.

[0017] Furthermore, multiple independent plates are connected by splicing to form the cover; or,

[0018] At least two of the plurality of plates form an integral base. The base contains plates with concave indentations between adjacent plates to facilitate bending. In addition to the plates that constitute the base, there is at least one independent plate among the plurality of plates. The independent plate and the base are spliced ​​together to form the cover.

[0019] Furthermore, the cover is rectangular in shape and includes five plates. The outer contour of each plate is rectangular. Among the five plates, the plate opposite to the opening of the cover is the middle plate, and the other four plates are connected to the four sides of the middle plate.

[0020] Furthermore, the substrate comprises three plates, one of which is the middle plate, and the other two plates are located on both sides of the middle plate.

[0021] Furthermore, in the two spliced ​​plates, one of them is provided with a slot, and the other is provided with a snap-fit ​​part that is adapted to the slot.

[0022] Furthermore, the width W of the slot gradually increases from the inner cavity outward along the thickness direction of the plate to which it is located. The shape of the snap-fit ​​part is adapted to the slot. The slot is connected to the outer side of the plate to which it belongs. The plate with the snap-fit ​​part is inserted into the slot from the outer side of the plate with the slot.

[0023] Furthermore, among the plurality of plates, the plate disposed opposite to the opening of the cover is the intermediate plate, the base includes the intermediate plate and two plates connected to opposite sides of the intermediate plate, the plate connected to the base is provided with the snap-fit ​​part, and the plate on the base connected to the intermediate plate is provided with the snap-fit ​​groove.

[0024] Furthermore, the cover is a single piece. Among the multiple plates, the plate opposite to the opening is the middle plate, and the remaining plates are connected to the outer edge of the middle plate. The middle plate and the plates connected to the middle plate are provided with concave indentations to facilitate bending of the plates.

[0025] Furthermore, among the multiple plates connected to the intermediate plate, at least one of two adjacent plates is provided with a connecting portion, and a concave indentation is provided between the connecting portion and the plate connected thereto to facilitate bending the connecting portion. The connecting portion and the adjacent plate are fixedly connected or detachably connected.

[0026] Furthermore, among the plurality of plates, the plate opposite to the opening is the intermediate plate, and the remaining plates are connected to the outer edge of the intermediate plate. The intermediate plate is triangular, rectangular, or a polygon with more than four sides, and each side of the intermediate plate is connected to a plate.

[0027] On the other hand, this utility model proposes a heat preservation system, comprising:

[0028] The thermal cover as described in any of the preceding items; and,

[0029] An insulating pad for placing objects, the cover for covering the insulating pad, the insulating pad being made of a non-metallic porous material;

[0030] The thickness of the insulation pad is 4–24 mm;

[0031] The non-metallic porous material is polyester fiber, sponge, glass fiber, or rock wool;

[0032] The material of the insulation pad may be the same as or different from the material of the plate.

[0033] Compared with the prior art, the present invention has the following beneficial effects: According to at least one embodiment of the present application, the cover is composed of multiple plates connected together, which has a simpler structure, is not easily damaged, and is conducive to improving the reliability of use and extending the service life. Furthermore, the plates are made of non-metallic porous materials, which have a small thermal conductivity and can play a better heat preservation role. Combined with the reflection of heat radiation by the metal reflective film, the overall heat preservation effect of the heat preservation cover is improved. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the heat insulation cover in some embodiments of this utility model.

[0035] Figure 2 This is a schematic diagram showing the connection between the plate and the metal reflective film in some embodiments of this utility model.

[0036] Figure 3 This is a schematic diagram of the substrate in some embodiments of this utility model.

[0037] Figure 4 Through Figure 3 The diagram shows the structure of the cover formed by bending the substrate.

[0038] Figure 5 This is a schematic diagram of the substrate in some embodiments of this utility model.

[0039] Figure 6 This is a schematic diagram of the base and the plate connected thereto in some embodiments of this utility model.

[0040] Figure 7 yes Figure 6 Side view of the matrix.

[0041] Figure 8 Through Figure 6 The diagram shows a structural schematic of the cover formed by connecting the base and the plate.

[0042] Figure 9 This is a schematic diagram of the insulation system of some embodiments of this utility model placed on a support platform.

[0043] Figure 10a This is a schematic diagram of a substrate sample from some embodiments of this utility model.

[0044] Figure 10b yes Figure 10a A schematic diagram of the substrate being bent into a cover.

[0045] Figure 10c yes Figure 10a A schematic diagram of a cover formed by bending the same substrate.

[0046] Figure 11 This is a schematic diagram of the structure of the thermal insulation pad in some embodiments of this utility model.

[0047] Figure 12 This is a graph showing the heat insulation performance of the heat insulation cover in some embodiments of this utility model. Detailed Implementation

[0048] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0049] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] This application proposes a heat-insulating cover that can be used to keep objects warm, such as food, to prevent them from cooling down rapidly.

[0052] The heat insulation cover includes a cover body 1 and a metal reflective film 2 disposed on the inner surface of the cover body 1.

[0053] like Figure 1 As shown, the cover 1 has an inner cavity 10 and an opening 11 connecting the inner cavity 10 to the outside. The inner cavity 10 can serve as a space to accommodate objects that need to be insulated, and the opening 11 allows objects to easily enter or leave the inner cavity 10. For example, when an object is placed on a table, the cover 1 can be placed over the object. At this time, the object enters the inner cavity 10 through the opening 11, and when the cover 1 is removed, the object leaves the inner cavity 10 through the opening 11.

[0054] The cover 1 is composed of multiple plates 12 connected together. In some embodiments, the cover 1 is integrally formed, for example, by bending an integral base 15, making it impossible to remove the plates 12 individually. In other embodiments, the cover 1 is detachable; optionally, at least one plate 12 can be removed from the cover 1. The cover 1 formed by connecting the plates 12 eliminates the need for the frame structure commonly found in current thermal insulation covers, resulting in a simpler structure that is less prone to damage, thus improving reliability and extending service life.

[0055] The plate 12 is made of a non-metallic porous material. Porous materials have a lower thermal conductivity, resulting in better insulation. Furthermore, non-metallic porous materials have an even lower thermal conductivity than metallic porous materials, further enhancing the insulation effect. The plate 12, made of non-metallic porous material, is thicker than the soft cloth of traditional insulation covers and possesses a certain degree of flexibility, allowing it to be bent and deformed without losing its shape like cloth. When the plate 12 of the cover 1 is detachable, the cover 1 can be removed for convenient storage when not in use. Because the plate 12 can elastically deform, disassembly is also more convenient.

[0056] Each plate 12 has a metal reflective film 2 on its inner surface facing the inner cavity 10. The metal reflective film 2 can reflect the heat radiation emitted by the object, thereby reducing the heat exchange between the inside and outside of the cover 1 and achieving a good heat preservation effect. Combined with the low thermal conductivity of the porous material, it can better preserve heat, making the heat preservation cover have a better heat preservation effect. In addition, since each plate 12 can maintain its own shape and will not be easily folded like cloth, the metal reflective film 2 on the plate 12 is not easily folded and damaged. It can be understood that the heat preservation cover uses the plate 12 as a supporting frame, and its shape can be maintained by the plate 12.

[0057] It is understandable that the larger the area of ​​the metal reflective film 2 covering the inner surface of the plate 12, the better the heat preservation effect is usually. Optionally, the distance between the edge of the metal reflective film 2 and the edge of the plate 12 does not exceed 5mm. Further optional, the metal reflective film 2 covers the entire inner surface of the plate 12.

[0058] In some embodiments, the material of the panel 12 is polyester fiber, sponge, glass fiber, or rock wool, all of which are porous materials with good thermal insulation properties. Glass fiber and rock wool are relatively prickly and may be harmful to health; therefore, when the object to be insulated is food, polyester fiber or sponge can be chosen. Furthermore, the material of the panel 12 is polyester fiber, which has better decorative properties and can make the insulation cover more aesthetically pleasing.

[0059] In some embodiments, the thickness of the plate 12 is 4 to 24 mm, which is thicker than the soft cloth on the surface of a traditional heat insulation cover, so as to give it a good heat insulation effect and help it maintain its shape and improve its support performance.

[0060] In some embodiments, the metal reflective film 2 is made of metals such as aluminum, silver, or gold. Metals such as aluminum, silver, or gold have high reflectivity for electromagnetic waves in the infrared region, thus effectively reflecting thermal radiation and reducing heat loss. Further optionally, the metal reflective film 2 is made of aluminum, which can reduce costs.

[0061] In some embodiments, the thickness of the metal reflective film 2 is 0.01 to 3 mm to give it a good effect of reflecting thermal radiation.

[0062] As a feasible implementation method, the plate 12 is selected with a density of 100 kg / m³. 3 ~280kg / m 3 Made of polyester fiber (PET), the lower the density of PET material, the lower the thermal conductivity and the better the heat insulation performance. A density of 100 kg / m³ is selected. 3 ~280kg / m 3 The polyester fiber used to make the board 12 results in a board 12 with a lower thermal conductivity and more suitable strength. With a density of 200 kg / m³... 3 Taking the PET sheet as an example, its thermal conductivity λ is approximately 0.034 W / m·K.

[0063] The thermal resistance of PET material can be expressed by the formula:

[0064] R = δλ;

[0065] Where δ represents the material thickness and λ represents the thermal conductivity, the formula shows that the thicker the material, the greater its thermal resistance. Therefore, for the selection of materials for the insulation cover, thick, low-density materials are optimal. Plate 12 is made of a material with a density of 100 kg / m³. 3 ~280kg / m 3 Made of polyester fiber with a thickness of 4-24mm, it can achieve good thermal resistance, ensuring heat preservation performance. It will not be too thin or too low in density, resulting in a soft material with poor support performance, affecting the overall molding and aesthetics. It will also not be too thick, affecting bending performance or making it too bulky. For food insulation, the thermal resistance of 24mm thick board is sufficient, and the heat preservation benefits of further increasing the thickness are limited.

[0066] There are various ways to connect the plate 12 and the metal reflective film 2. In some embodiments, the plate 12 and the metal reflective film 2 are connected by sewing, for example, by connecting the edge of the metal reflective film 2 to the plate 12. In other embodiments, the plate 12 and the metal reflective film 2 are connected by hot melt adhesive. In still other embodiments, the plate 12 and the metal reflective film 2 are connected by an adhesive film 14. The adhesive film 14 is a thin mesh made of polyester fiber with a melting point below 150°C and a thickness of 0.01 to 0.2 mm. During connection, the adhesive film 14 is placed between the plate 12 and the metal reflective film 2 and then heated. The outer layer of the adhesive film 14 will melt after heating, thereby adhering the plate 12 and the metal reflective film 2. After cooling, it sets. Therefore, the adhesive film 14 can be used as an adhesive. Connecting the plate 12 and the metal reflective film 2 with an adhesive film 14 made of polyester fiber does not introduce other materials and is safer and more reliable.

[0067] In some embodiments, at least two of the plurality of plates 12 form an integral base 15. In some embodiments, the cover 1 is integral, for example, the cover 1 is formed by bending the integral base 15, in which case all the plates 12 form an integral base 15. The plate 12 on the cover 1 that is disposed opposite to its opening 11 is the intermediate plate 12a, and the remaining plates 12 are connected to the outer edge of the intermediate plate 12a.

[0068] As one possible implementation, such as Figure 3 As shown, the cover 1 includes five plates 12, namely plate 12a, plate 12b, plate 12c, plate 12d, and plate 12e. The outer contour of each plate 12 is rectangular. Among the five plates 12, the plate 12 opposite to the opening 11 of the cover 1 is the middle plate (plate 12a in the figure), and the other four plates 12 are connected to the four sides of the middle plate 12a (hereinafter referred to as the surrounding plates). Figure 3 As shown, after bending the four plates 12 connected to the intermediate plate 12a, a shape will be formed as follows: Figure 4 The cover 1 shown is rectangular in shape. It is understood that in this embodiment, the cover 1 is integrally formed by bending a flat base 15. The two plates 12 adjacent to the intermediate plate 12a can be connected by existing connection methods. Optionally, the two plates 12 adjacent to the intermediate plate 12a are detachably connected. When the cover 1 is not needed, it can be restored to a flat shape for easy storage and to save space.

[0069] To facilitate bending, a concave indentation 122 is provided between the intermediate plate 12a and the connected plates 12b-12e. Bending the plate 12 around the indentation 122 makes it easier for the surrounding plates to stand up and reduces the compressive force between the surrounding plates and the intermediate plate 12a, thus making it easier to maintain the shape of the formed cover 1. Optionally, the cross-section of the indentation 122 is a V-shaped groove.

[0070] As a feasible embodiment, among the multiple plates 12 connected to the intermediate plate 12a, at least one of two adjacent plates 12 is provided with a connecting portion 16. A concave indentation 122 is provided between the connecting portion 16 and the plate 12 connected to it to facilitate bending the connecting portion 16. Thus, the connecting portion 16 can be bent to fit against another plate 12. Through the connection between the connecting portion 16 and the opposite plate 12, two adjacent plates 12 can be connected. The connection between the connecting portion 16 and the plate 12 can be fixed (non-removable) or detachable. When a detachable connection is used, the cover 1 can be restored to a flat base 15, making it easier to store. The detachable connection method can be, for example, through Velcro. For instance, Velcro tabs can be provided on the connecting portion 16 and the plate 12 to be fitted, allowing the connecting portion 16 to fit snugly against the plate 12.

[0071] Figure 3 and Figure 4 In the illustrated embodiment, plates 12b and 12d located at both ends of the intermediate plate 12a along the length direction X are provided with connecting portions 16. Each plate 12b and plate 12d has two connecting portions 16 located on both sides of the plate, and the two connecting portions 16 are spaced apart along the width direction Y of the intermediate plate 12a. The two connecting portions 16 on the same plate are respectively used to abut against the outer surfaces of the oppositely arranged plates 12c and 12e (or can be configured to abut against the inner surface of the plate 12e).

[0072] It is understood that in other embodiments, connecting portions 16 may also be provided at the two ends of the intermediate plate 12a, plate 12c and plate 12e, in the width direction Y. Alternatively, as... Figure 5 As shown, a connecting part 16 is provided on each of the plates 12b, 12c, 12d and 12e, and each connecting part 16 is located on the same side of the plate 12 in a clockwise or counterclockwise direction centered on the center of the intermediate plate 12a.

[0073] In some embodiments, at least two of the plurality of plates 12 form an integral base 15. Among the plates 12 contained in the base 15, there are concave indentations 122 between two adjacent plates 12 to facilitate bending of the plates 12. In addition to the plates 12 constituting the base 15, there is at least one independent plate 12 among the plurality of plates 12. The independent plate 12 and the base 15 are spliced ​​together to form the cover 1.

[0074] In some embodiments, among the plurality of plates 12, only a portion of the plates 12 are connected to form an integral base 15, and there is at least one plate 12 independent of the base 15. Optionally, the base 15 includes an intermediate plate 12a.

[0075] In some embodiments, a plate 12, which is independent of the base 15, is connected to the base 15 by splicing to form a cover 1.

[0076] like Figure 6 and Figure 7 As shown, the substrate 15 includes three plates 12, one of which is a middle plate 12a, and the other two plates 12b and 12d are located on both sides of the middle plate 12a. An indentation 122 is provided between the plates 12b, 12d and the middle plate 12a. Plates 12c and 12e are independent plates.

[0077] The independent plates are connected to the base 15 by splicing. Among the two spliced ​​plates 12, one is provided with a slot 120, and the other is provided with a snap-fit ​​part 121 that is adapted to the slot 120. The splicing of the two adjacent plates 12 is achieved by the mating of the slot 120 and the snap-fit ​​part 121. Figure 6 In the middle, plates 12b and 12d are provided with a plurality of slots 120 on both sides along the width direction Y of the base 15, and plates 12c and 12e are provided with a plurality of engaging parts 121 on both sides along the length direction X of the base 15. The shape of the engaging parts 121 is adapted to the slots 120. When plates 12c and 12e are spliced ​​together, a... Figure 8 The cover shown is 1.

[0078] Optionally, the slot 120 is connected to the outer surface 123 of its corresponding plate 12, so that the plate 12 with the snap-fit ​​part 121 (e.g., plate 12c, 12e) can be inserted into the slot 120 from the outer surface 123 of the plate 12 with the slot 120 (e.g., plate 12b, 12d). Figure 8 (The middle part is inserted along the Y direction), which makes it easier to splice.

[0079] Furthermore, the width W of the slot 120 is along the thickness direction of the plate 12 on which it is located ( Figure 8The groove 120 (in the X direction) gradually increases outward from the inner cavity 10, so that the groove 120 and the engaging part 121 can be connected to prevent the plate 12 (e.g., plate 12b, 12d) with the groove 120 from deflecting along its thickness direction. Figure 8 The plate 12 (e.g., plate 12c, 12e) with a snap-fit ​​part 121 that is inserted with it is detached. It is understood that since the plate 12 with the snap-fit ​​part 120 is integral with the base 15, when it is bent, there is an elastic restoring force along the X direction. Through the above-mentioned structural design of the snap-fit ​​part 120 and the snap-fit ​​part 121, this elastic restoring force can be resisted, making the connection more stable and the cover 1 can better maintain its shape.

[0080] It is understandable that multiple panels 12 can be completely independent, instead of forming an integral base 15 consisting of at least two panels 12. Multiple independent panels 12 can be connected to form a cover 1. Optionally, adjacent panels 12 can be detachably connected, for example by using Velcro or splicing. When the cover 1 is not in use, it can be disassembled into independent panels 12, which facilitates storage and saves space.

[0081] It is understandable that although the above description uses a cuboid shape as an example to introduce the cover 1, the shape of the cover 1 is not limited to a cuboid. For example, it can also be prism-shaped, such as a triangular prism or a pentagonal prism. The shape of the cover 1 can be determined by the intermediate plate. For example, when the intermediate plate is rectangular, the shape of the cover 1 is cuboid; when the intermediate plate is triangular, the shape of the cover 1 is triangular prism. Optionally, the intermediate plate can be triangular, rectangular, or a polygon with more than four sides. Each side of the intermediate plate is connected to a plate 12 to form a cover 1 that is open at only one end.

[0082] This utility model also proposes a heat preservation system, see reference Figure 9 The insulation system includes the insulation cover described above and an insulation pad 3 for placing objects. The cover 1 is used to cover the insulation pad 3. The insulation pad 3 is made of a non-metallic porous material, such as polyester fiber, sponge, glass fiber, or rock wool. The material of the insulation pad 3 can be the same as or different from the material of the plate 12.

[0083] The insulation pad 3 is used to support objects. For example, food can be placed on the insulation pad 3, and then the cover 1 can be placed over the food. Because the insulation pad 3 reduces heat exchange between the food and the table or other supporting surface, it can further improve the insulation effect and slow down the cooling of the food. Optionally, the insulation pad 3 has a thickness of 4-24 mm and is made of polyester fiber board with a density of 100 kg / m³. 3 ~280kg / m 3Alternatively, the insulation pad 3 may be decorated with etched openwork patterns to enhance its aesthetic appeal.

[0084] To verify the thermal insulation performance of the insulation cover, as shown in Figure*, Figures 10a to 10c A sample of the manufactured heat insulation cover is shown. The heat insulation cover adopts an integral cover body 1, and the surrounding panels of the cover body 1 are connected by Velcro. Figure 10a A schematic diagram of the substrate 15 when the cover 1 is in the shape of a flat plate is shown. Figure 10b A schematic diagram of the process of bending the substrate 15 to form the cover 1 is shown. Figure 10c A schematic diagram of the completed cover 1 is shown. Cover 1 is made of polyester fiber, with a thickness of 9 mm and a density of 200 kg / m³. 3 The metal reflective film 2 is an aluminum film with a thickness of 0.05 mm.

[0085] The test samples were two cups of hot water of the same volume and initial temperature (Sample 1 and Sample 2), with identical shape and size. During the test, Sample 1 was placed on the table in direct contact with it, while Sample 2 was also placed on the table but separated by an insulating pad 3 and covered by a cover 1. The insulating pad 3 was made of polyester fiber, 9 mm thick, with a density of 200 kg / m³. 3 The shape of the insulation pad 3 used is referenced. Figure 11 .

[0086] During the test, the temperature of sample 1 and sample 2 was measured every five minutes, and the results were as follows: Figure 12 The temperature comparison curves are shown below. In the graph, the black line (dotted line) represents the water temperature change over time when placed on a table, the red line (dotted line) represents the water temperature change over time when placed inside the insulation cover, and the blue line (dashed line) represents the ambient air temperature. As can be seen from the graph, the water temperature inside the insulation cover is higher and the rate of temperature decrease is slower; after 20 minutes, it is about 15 degrees Celsius higher than the water temperature simply placed on the table. It is understandable that testing sample 2 requires opening the cover to measure the temperature, i.e., opening the cover once every 5 minutes, which will have a certain impact on the insulation performance. In actual use where frequent opening of the cover is not required, the maintained temperature should be higher.

[0087] Understandably, heat shields are not limited to slowing down the cooling of hot objects; they can also be used to slow down the heating of cold objects.

[0088] The above are merely specific embodiments of this utility model. Any improvements made based on the concept of this utility model shall be considered within the scope of protection of this utility model.

Claims

1. A heat insulation cover, characterized in that, include: The cover (1) has an inner cavity (10) and an opening (11) connecting the inner cavity (10) to the outside. The cover (1) is composed of multiple plates (12) connected together, and the plates (12) are made of a non-metallic porous material; and, Metal reflective film (2) is provided on the inner surface of each plate (12) facing the inner cavity (10).

2. The heat insulation cover as described in claim 1, characterized in that, The material of the plate (12) is polyester fiber, sponge, glass fiber or rock wool, and the material of the metal reflective film (2) is aluminum, silver or gold.

3. The heat insulation cover as described in claim 1, characterized in that, The thickness of the plate (12) is 4 to 24 mm, and the thickness of the metal reflective film (2) is 0.01 to 3 mm.

4. The heat insulation cover as described in claim 3, characterized in that, The plate (12) is made of polyester fiber with a density of 100 kg / m³. 3 ~280kg / m 3 .

5. The heat insulation cover as described in claim 1, characterized in that, The plate (12) and the metal reflective film (2) are connected together by sewing; or, The plate (12) and the metal reflective film (2) are joined together with hot melt adhesive; or, The plate (12) and the metal reflective film (2) are connected together by an adhesive film (14).

6. The heat insulation cover according to any one of claims 1 to 5, characterized in that, Multiple plates (12) are independent of each other and are connected by splicing to form the cover (1); or, At least two of the plurality of plates (12) form an integral base (15). The base (15) contains plates (12) with concave indentations (122) between adjacent plates (12) to facilitate bending of the plates (12). In addition to the plates (12) constituting the base (15), there is at least one independent plate (12) among the plurality of plates (12). The independent plate and the base (15) are spliced ​​together to form the cover (1).

7. The heat insulation cover as described in claim 6, characterized in that, The cover (1) is rectangular and includes five plates (12). The outer contour of each plate (12) is rectangular. The plate (12) opposite to the opening (11) of the cover (1) is the middle plate, and the other four plates (12) are connected to the four sides of the middle plate.

8. The heat insulation cover as described in claim 7, characterized in that, The substrate (15) includes three plates (12), one of which is the middle plate, and the other two plates (12) are located on both sides of the middle plate.

9. The heat insulation cover as described in claim 6, characterized in that, In the two plates (12) that are spliced ​​together, one of them is provided with a slot (120), and the other is provided with a snap-fit ​​part (121) that is adapted to the slot (120).

10. The heat insulation cover as described in claim 9, characterized in that, The width W of the slot (120) gradually increases outward from the inner cavity (10) along the thickness direction of the plate (12) to which it is located. The shape of the snap-fit ​​part (121) is adapted to the slot (120). The slot (120) is connected to the outer side (123) of the plate (12) to which it belongs. The plate (12) with the snap-fit ​​part (121) is inserted into the slot (120) from the outer side (123) of the plate (12) with the slot (120).

11. The heat insulation cover as described in claim 10, characterized in that, Among the plurality of plates (12), the plate (12) opposite to the opening (11) of the cover (1) is the intermediate plate. The base (15) includes the intermediate plate and two plates (12) connected to opposite sides of the intermediate plate. The plate (12) connected to the base (15) is provided with the snap-fit ​​part (121), and the plate (12) on the base (15) connected to the intermediate plate is provided with the slot (120).

12. The heat insulation cover as described in claim 6, characterized in that, The cover (1) is a single piece. Among the multiple plates (12), the plate (12) opposite to the opening (11) is the middle plate. The remaining plates (12) are connected to the outer edge of the middle plate. A concave indentation (122) is provided between the middle plate and the plate (12) connected to the middle plate to facilitate bending of the plate (12).

13. The heat insulation cover as described in claim 12, characterized in that, Among the multiple plates (12) connected to the intermediate plate, at least one of two adjacent plates (12) is provided with a connecting part (16), and a concave indentation (122) is provided between the connecting part (16) and the plate (12) connected thereto, so as to facilitate bending the connecting part (16). The connecting part (16) and the adjacent plate (12) are fixedly connected or detachably connected.

14. The thermal insulation system according to any one of claims 1 to 5, characterized in that, Among the multiple plates (12), the plate (12) opposite to the opening (11) is the middle plate, and the other plates (12) are connected to the outer edge of the middle plate. The middle plate is triangular, rectangular or polygonal with more than four sides, and each side of the middle plate is connected to a plate (12).

15. A thermal insulation system, characterized in that, include: The heat insulation cover as described in any one of claims 1 to 14; as well as, A heat-insulating pad (3) for placing objects, wherein the cover (1) is used to cover the heat-insulating pad (3), and the heat-insulating pad (3) is made of a non-metallic porous material; The thickness of the insulation pad (3) is 4-24 mm; The non-metallic porous material is polyester fiber, sponge, glass fiber, or rock wool; The material of the insulation pad (3) may be the same as or different from the material of the plate (12).

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