Vacuum insulated panel and vacuum insulated panel bottom shell

Abstract

The utility model discloses a vacuum insulation panel which comprises a bottom shell, a core material, an adsorbent and a barrier film. A containing cavity is formed in the bottom shell, an edge sealing table is arranged on the edge of the bottom shell, an annular glue containing part is arranged on the edge sealing table, the edge sealing table on the inner side of the annular glue containing part is an inner sealing table, and packaging glue is arranged in the annular glue containing part; a containing cavity is formed in the bottom shell, the core material is arranged in the containing cavity, the adsorbent is arranged in the containing cavity, the edge of the barrier film and the edge sealing table are heat-sealed together through packaging glue, a vacuum cavity is formed between the barrier film and the bottom shell, and the core material and the adsorbent are located in the vacuum cavity. The utility model further discloses a vacuum insulation panel bottom shell. According to the utility model, the annular glue accommodating part is arranged on the edge sealing table, so that the packaging glue can be arranged on the annular glue accommodating part, and the phenomenon that the packaging glue flows to the inner sealing table is effectively reduced when the bottom shell and the barrier film are subjected to heat sealing, so that the inner sealing table and the barrier film are tightly welded.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation materials technology, and in particular to a vacuum insulation board and a vacuum insulation board bottom shell. Background Technology

[0002] Shell-type vacuum insulation panels typically include a bottom shell, a core material, an adsorbent, and a barrier membrane. A receiving cavity is formed inside the bottom shell, and the edge of the bottom shell is a sealing platform. The core material is placed inside the receiving cavity of the bottom shell, and the adsorbent is placed on the core material. After vacuuming, the edge of the barrier membrane is heat-sealed together with the sealing platform of the bottom shell, thereby obtaining the shell-type vacuum insulation panel.

[0003] Some shell-type vacuum insulation panels have a metal base shell and a metal barrier film, making them suitable for high-temperature environments. During heat sealing, encapsulating adhesive is applied to the outside of the sealing platform. Upon heating, the adhesive melts, sealing the metal base shell and barrier film together, achieving pre-sealing. Next, the inside of the sealing platform is welded to the barrier film to form a ring. Finally, the pre-sealed portion outside the ring is trimmed, resulting in a shell-type vacuum insulation panel with a narrower sealing edge.

[0004] After the encapsulating adhesive is applied to the outside of the sealing platform, when the metal base shell and the metal barrier film are pre-sealed with the encapsulating adhesive, the encapsulating adhesive will be squeezed and flow to the inside of the sealing platform. This causes the encapsulating adhesive to be punctured when the metal base shell and the metal barrier film are welded, resulting in an insufficiently tight weld between the metal base shell and the metal barrier film, which affects the heat insulation performance of the vacuum insulation panel. Utility Model Content

[0005] Based on the aforementioned problems in the prior art, one objective of this application is to provide a vacuum insulation panel that, by setting an annular encapsulation portion on the sealing platform, can place the encapsulation adhesive on the annular encapsulation portion. During the heat sealing of the bottom shell and the barrier film, the phenomenon of encapsulation adhesive flowing to the inner sealing platform is effectively reduced, thereby making the inner sealing platform and the barrier film welded tightly.

[0006] The second objective of this application is to provide a vacuum insulation panel bottom shell.

[0007] The technical solution adopted by this application to solve its technical problem is: a vacuum insulation panel, including a bottom shell, a core material, an adsorbent and a barrier film;

[0008] The bottom shell forms a receiving cavity, the edge of the bottom shell is a sealing platform, a ring-shaped adhesive portion is provided on the sealing platform, the sealing platform inside the ring-shaped adhesive portion is an inner sealing platform, and encapsulating adhesive is provided in the ring-shaped adhesive portion; the core material is disposed in the receiving cavity, the adsorbent is disposed in the receiving cavity, the edge of the barrier film is heat-sealed to the sealing platform by the encapsulating adhesive, a vacuum cavity is formed between the barrier film and the bottom shell, and the core material and adsorbent are located in the vacuum cavity.

[0009] Furthermore, the annular rubber part is an annular groove, and the sealing platform outside the annular groove is an outer sealing platform.

[0010] Furthermore, the annular rubber portion is an annular step.

[0011] Furthermore, the bottom shell is a metal bottom shell.

[0012] Furthermore, the bottom shell is a stainless steel bottom shell.

[0013] Furthermore, the barrier film is a metal barrier film.

[0014] Furthermore, the barrier film is a stainless steel barrier film.

[0015] Furthermore, the encapsulating adhesive is EVA, PES, PA, SBS, or EAA.

[0016] Furthermore, the core material is centrifugal cotton core material, basalt core material, gas silica core material, or high silica glass fiber core material.

[0017] Furthermore, the depth of the annular rubber portion is 0.5mm-1.5mm.

[0018] The technical solution adopted by this application to solve its technical problem is: a vacuum insulation panel bottom shell, wherein a receiving cavity is formed inside the bottom shell, the edge of the bottom shell is a sealing platform, an annular rubber part is provided on the sealing platform, and the sealing platform inside the annular rubber part is an inner sealing platform.

[0019] The beneficial effects of this application are as follows: When manufacturing a shell-type vacuum insulation panel, after applying the encapsulating adhesive to the annular encapsulating part, the core material and adsorbent are placed in the receiving cavity, and then the barrier film is placed on the core material. Next, the entire assembly is sent into a vacuum device for vacuuming. Finally, the heating plate descends, presses on the barrier film, and heats the barrier film, causing the encapsulating adhesive to melt and heat-seal the bottom shell and the barrier film together. When the encapsulating adhesive melts, due to the action of the annular encapsulating part, the encapsulating adhesive does not easily flow to the inner sealing platform, so that the inner sealing platform and the barrier film are welded tightly during welding. Attached Figure Description

[0020] Figure 1 This is an exploded view of the vacuum insulation panel in this application;

[0021] Figure 2 This is a cross-sectional view of the uncut outer sealing platform of the vacuum insulation panel in this application;

[0022] Figure 3 This is a cross-sectional view of the outer sealing platform of the vacuum insulation panel in this application after cutting.

[0023] Figure 4 This is a schematic diagram of the bottom shell structure in this application;

[0024] Figure 5 For this application Figure 4 A magnified view of a portion of the image;

[0025] Figure 6 This is a schematic diagram of the structure of the bottom shell of the vacuum insulation panel according to another embodiment of this application.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Bottom shell, 11. Receiving cavity, 12. Sealing platform, 121. Annular adhesive part, 122. Inner sealing platform, 123. Outer sealing platform, 124. Annular groove, 125. Annular step, 2. Core material, 3. Adsorbent, 4. Barrier membrane. Detailed Implementation

[0028] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 6 As shown, a vacuum insulation panel of this utility model includes a bottom shell 1, a core material 2, an adsorbent 3, and a barrier film 4. A receiving cavity 11 is formed inside the bottom shell 1, and the edge of the bottom shell 1 is a sealing platform 12. An annular adhesive portion 121 is provided on the sealing platform 12, and the sealing platform 12 inside the annular adhesive portion 121 is an inner sealing platform 122. An encapsulating adhesive is provided inside the annular adhesive portion 121. The core material 2 is disposed in the receiving cavity 11, the adsorbent 3 is disposed in the receiving cavity 11, and the edge of the barrier film 4 is heat-sealed to the sealing platform 12 by the encapsulating adhesive. A vacuum cavity is formed between the barrier film 4 and the bottom shell 1, and the core material 2 and the adsorbent 3 are located in the vacuum cavity.

[0030] Thus, in the production of the vacuum insulation panel of this utility model, after applying encapsulating adhesive to the annular encapsulating adhesive portion 121, the core material 2 and the adsorbent 3 are placed in the receiving cavity 11, and then the barrier film 4 is placed on the core material 2. Next, the whole assembly is sent into a vacuum device for vacuuming. Finally, the heating plate descends, presses on the barrier film 4, and heats the barrier film 4, causing the encapsulating adhesive to melt and heat-seal the bottom shell 1 and the barrier film 4 together. When the encapsulating adhesive melts, due to the action of the annular encapsulating adhesive portion 121, the encapsulating adhesive does not easily flow to the inner sealing platform 122, so that the inner sealing platform 122 and the barrier film 4 are welded tightly during welding.

[0031] like Figure 6 As shown, in one embodiment of this utility model, the annular encapsulation portion 121 is an annular step 125. Encapsulating adhesive, such as pressure-sensitive adhesive, can be applied to the annular step 125, thereby improving the heat-sealing effect between the barrier film 4 and the bottom shell 1.

[0032] like Figure 5 As shown, in another preferred embodiment of this utility model, the annular encapsulation portion 121 is an annular groove 124, and the sealing platform 12 outside the annular groove 124 is an outer sealing platform 123. Encapsulating adhesive, such as hot melt adhesive, can be applied to the outer sealing platform 123 and the annular groove 124, thereby improving the heat sealing effect between the barrier film 4 and the bottom shell 1.

[0033] In this embodiment, the bottom shell 1 is a metal bottom shell 1, or the bottom shell 1 is a stainless steel bottom shell 1. The barrier film 4 is a metal barrier film 4, or the barrier film 4 is a stainless steel barrier film 4. Since both the bottom shell 1 and the barrier film 4 are made of high-temperature resistant materials, the resulting vacuum insulation board can be used in high-temperature environments. After the edge of the barrier film 4 is heat-sealed to the sealing platform 12 with encapsulating adhesive, the inner sealing platform 122 is welded to the barrier film 4. Finally, the outer edge of the inner sealing platform 122 and the barrier film 4 are cut off, thereby obtaining a high-temperature resistant vacuum insulation board with a narrow sealing edge.

[0034] In this embodiment, the depth of the annular encapsulant portion 121 can be 0.5mm-1.5mm. In this embodiment, the encapsulant is EVA, PES, PA, SBS, or EAA. After heating, the encapsulant melts, allowing the edge of the barrier film 4 to be firmly heat-sealed to the sealing platen 12.

[0035] Furthermore, the core material 2 can be centrifugal cotton core material 2, basalt core material 2, gas silica core material 2, or high silica glass fiber core material 2, and different core materials 2 can be selected according to different needs.

[0036] This utility model also proposes a vacuum insulation panel bottom shell, in which a receiving cavity 11 is formed inside the bottom shell 1, the edge of the bottom shell 1 is a sealing platform 12, an annular adhesive part 121 is provided on the sealing platform 12, and the sealing platform 12 inside the annular adhesive part 121 is an inner sealing platform 122.

[0037] By providing an annular encapsulation portion 121, which is closed at both ends to form a ring shape, after applying encapsulating adhesive to the outer sealing platform 123 and the annular encapsulation portion 121, during the heat sealing of the sealing platform 12 and the barrier film 4, the annular encapsulation portion 121 effectively reduces the flow of encapsulating adhesive into the inner sealing platform 122, thereby improving the welding effect between the barrier film 4 and the inner sealing platform 122. Since the receiving cavity 11 of the metal base shell 1 is usually formed by stamping, the material at the sealing platform 12 is stretched during the stamping process, resulting in wrinkles and unevenness on the surface of the sealing platform 12, affecting the heat sealing between the sealing platform 12 and the barrier film 4. In this example, by providing an annular encapsulation portion 121 on the sealing platform 12, the encapsulating adhesive in the annular encapsulation portion 121 fully contacts the barrier film 4, thereby improving the heat sealing effect between the sealing platform 12 and the barrier film 4.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vacuum insulation panel, characterized in that: Includes the bottom shell, core material, adsorbent, and barrier membrane; The bottom shell forms a receiving cavity, the edge of the bottom shell is a sealing platform, a ring-shaped adhesive portion is provided on the sealing platform, the sealing platform inside the ring-shaped adhesive portion is an inner sealing platform, and encapsulating adhesive is provided in the ring-shaped adhesive portion; the core material is disposed in the receiving cavity, the adsorbent is disposed in the receiving cavity, the edge of the barrier film is heat-sealed to the sealing platform by the encapsulating adhesive, a vacuum cavity is formed between the barrier film and the bottom shell, and the core material and adsorbent are located in the vacuum cavity.

2. The vacuum insulation panel as described in claim 1, characterized in that: The annular rubber part is an annular groove, and the sealing platform outside the annular groove is an outer sealing platform.

3. The vacuum insulation panel as described in claim 1, characterized in that: The annular rubber part is an annular step.

4. The vacuum insulation panel as described in claim 1, characterized in that: The bottom shell is a metal bottom shell.

5. The vacuum insulation panel as described in claim 1, characterized in that: The bottom shell is made of stainless steel.

6. The vacuum insulation panel as described in claim 1, characterized in that: The barrier film is a metal barrier film.

7. The vacuum insulation panel as described in claim 1, characterized in that: The encapsulating adhesive is EVA, PES, PA, SBS, or EAA.

8. The vacuum insulation panel as described in claim 1, characterized in that: The core material is centrifugal cotton core material, basalt core material, gas silica core material, or high silica glass fiber core material.

9. The vacuum insulation panel as described in claim 1, characterized in that: The depth of the ring-shaped rubber portion is 0.5mm-1.5mm.

10. A vacuum insulation panel bottom shell, characterized in that: A receiving cavity is formed inside the bottom shell, and the edge of the bottom shell is a sealing platform. An annular rubber part is provided on the sealing platform, and the sealing platform inside the annular rubber part is an inner sealing platform.

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