Shell type vacuum door body

Abstract

The utility model discloses a shell type vacuum door body which comprises an outer shell, a core material, a bottom shell and a frame. The shell comprises a connecting frame, a first connecting surface is formed on the connecting frame, and a first groove is formed in the shell; the lower part of the core material is arranged in the first groove; the bottom shell is formed by stamping or blistering a barrier film, a second groove used for containing the upper portion of the core material is formed in the bottom shell, a connecting edge is formed on the side portion of the bottom shell, and the lower portion of the connecting edge is arranged on the first connecting face; a second connecting face is formed at the bottom of the frame, the outer side of the second connecting face is connected with the first connecting face, the inner side of the second connecting face is connected with the upper portion of the connecting edge, and a door seal groove is formed between the inner side of the frame and the bottom shell. The bottom shell is formed by stamping or plastic uptake of the barrier film, the bottom shell is fixed on the outer shell, the core material is located between the bottom shell and the outer shell, and the overall cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment door bodies, in particular to a shell-type vacuum door body. Background Art

[0002] A refrigerator is a type of refrigeration equipment that maintains a constant low temperature. It is also a civilian product that keeps food or other items at a constant low temperature. A refrigerator includes a door. Some refrigerator doors are equipped with vacuum insulation panels to improve the insulation effect and reduce the thickness of the door. When making a refrigerator door, the traditional method is to fix the already made vacuum insulation panel inside the outer shell of the refrigerator door, such as fixing the vacuum insulation panel inside the outer shell with PU plus double-sided tape or hot melt adhesive, or fixing the vacuum insulation panel inside the outer shell with adhesive or PE heat sealing. Finally, the inner shell is fixed to the outer shell, so that the vacuum insulation panel is located between the outer shell and the inner shell, completing the production of the refrigerator door.

[0003] The traditional production method requires first making an independent vacuum insulation panel, and then fixing the vacuum insulation panel in the shell through various methods. The production of the vacuum insulation panel requires a large amount of barrier film. The method of fixing the vacuum insulation panel in the shell is troublesome and cumbersome, and the overall cost is high. Utility Model Content

[0004] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the present application is to provide a shell-type vacuum door body, whose bottom shell is formed by punching or vacuum forming a barrier film, the bottom shell is fixed on the outer shell, and the core material is located between the bottom shell and the outer shell, and the overall cost is low.

[0005] The technical solution adopted by the present application to solve its technical problem is: a shell-type vacuum door body, comprising an outer shell, a core material, a bottom shell and a frame;

[0006] The housing includes a connecting frame, a first connecting surface is formed on the connecting frame, and a first groove is formed in the housing;

[0007] The lower portion of the core material is disposed in the first groove;

[0008] The bottom shell is formed by punching or blistering a barrier film, a second groove is formed in the bottom shell for accommodating the upper part of the core material, a connecting edge is formed on the side of the bottom shell, and the lower part of the connecting edge is arranged on the first connecting surface, and a vacuum cavity is formed between the bottom shell and the outer shell;

[0009] A second connecting surface is formed at the bottom of the frame, the outer side of the second connecting surface is connected to the first connecting surface, the inner side of the second connecting surface is connected to the upper part of the connecting edge, and a door sealing groove is formed between the inner side of the frame and the bottom shell.

[0010] Furthermore, it also includes a sealing strip, which is arranged in the door sealing groove.

[0011] Furthermore, the outer portion of the shell is convex to form an arc-shaped portion.

[0012] Furthermore, the core material is made of ultrafine rock wool or ultrafine glass wool.

[0013] Furthermore, the core material includes an air-permeable and powder-impermeable bag and a powdery material, and the powdery material is arranged in the air-permeable and powder-impermeable bag.

[0014] Furthermore, the powdery material is expanded perlite or fumed silica.

[0015] Furthermore, an adsorbent is provided on the core material.

[0016] Furthermore, an air extraction hole is provided on the outer side of the bottom shell for facilitating air extraction, and the air extraction hole is sealed by a barrier sealing film.

[0017] Furthermore, the frame is made of a material with low thermal conductivity.

[0018] Furthermore, the inner side wall and the bottom of the bottom shell are provided with glass fiber mesh cloth.

[0019] Furthermore, an anti-scratch layer is provided on the outer side of the bottom shell.

[0020] Furthermore, the first connecting surface, the connecting edge and the second connecting surface are heat-sealed together.

[0021] Furthermore, a positioning groove is provided on the shell, and a positioning block inserted into the positioning groove is provided on the frame.

[0022] Furthermore, reinforcing ribs are provided in the shell.

[0023] The beneficial effects of the present application are as follows: during production, the lower portion of the core material is placed in the first groove, the bottom shell is buckled onto the core material so that the upper portion of the core material is located in the second groove, and then force is applied to the bottom shell to compress the core material, fixing the first connecting surface and the connecting edge together, and then fixing the second connecting surface to the connecting edge and the first connecting surface to fix the frame to the outer shell, and finally vacuuming the core material to complete the production of the shell-type vacuum door body. Therefore, the bottom shell of the utility model is formed by punching or vacuum forming a barrier film, thereby reducing the amount of barrier film used. The shell-type vacuum door body is formed by vacuuming as a whole, and does not require glue to fix the vacuum insulation panel, resulting in low overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the shell-type vacuum door body in this application;

[0025] Figure 2 This is an exploded view of the shell-type vacuum door body from another angle in this application;

[0026] Figure 3 This is a cross-sectional view of the shell-type vacuum door body in this application;

[0027] Figure 4 for Figure 3 A partial enlarged view of .

[0028] Description of Reference Numerals

[0029] Shell 1, connecting frame 11, first connecting surface 111, first groove 12, arc-shaped portion 13, positioning groove 14, reinforcing rib 15, core material 2, bottom shell 3, second groove 31, connecting edge 32, exhaust hole 33, frame 4, second connecting surface 41, positioning block 42, door sealing groove 5, sealing strip 6, fiberglass mesh cloth 7. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0031] like Figures 1 to 4 As shown, a shell-type vacuum door body of the present invention includes an outer shell 1, a core material 2, a bottom shell 3 and a frame 4; the outer shell 1 includes a connecting frame 11, a first connecting surface 111 is formed on the connecting frame 11, and a first groove 12 is formed in the outer shell 1; the lower part of the core material 2 is arranged in the first groove 12; the bottom shell 3 is formed by punching or blistering a barrier film, and a second groove 31 for accommodating the upper part of the core material 2 is formed in the bottom shell 3, a connecting edge 32 is formed on the side of the bottom shell 3, and the lower part of the connecting edge 32 is arranged on the first connecting surface 111; a vacuum cavity is formed between the bottom shell 3 and the outer shell 1, and the core material 2 is located in the vacuum cavity.

[0032] A second connecting surface 41 is formed at the bottom of the frame 4 . The outer side of the second connecting surface 41 is connected to the first connecting surface 111 , and the inner side of the second connecting surface 41 is connected to the upper part of the connecting edge 32 . A door sealing groove 5 is formed between the inner side of the frame 4 and the bottom shell 3 .

[0033] Thus, the shell-type vacuum door body involved in the present invention is manufactured by placing the lower portion of the core material 2 in the first groove 12, buckling the bottom shell 3 on the core material 2 so that the upper portion of the core material 2 is located in the second groove 31, and then applying force to the bottom shell 3 to compress the core material 2, fixing the first connecting surface 111 and the lower portion of the connecting edge 32 together, and then fixing the second connecting surface 41 to the upper portion of the connecting edge 32 and the first connecting surface 111 to fix the frame 4 to the outer shell 1, and finally vacuuming the core material 2 to complete the manufacture of the shell-type vacuum door body. Therefore, the bottom shell 3 of the present invention is formed by punching or vacuum forming a barrier film, thereby reducing the amount of barrier film used. The shell-type vacuum door body is formed by vacuuming as a whole, and does not require glue to fix the vacuum insulation panel, and the overall cost is low.

[0034] Furthermore, a sealing strip 6 is provided in the door sealing groove 5. By providing the sealing strip 6, after the frame 4 is fixed to the outer shell 1, a door sealing groove 5 is formed between the inner side of the frame 4 and the bottom shell 3. After the sealing strip 6 is fixed in the door sealing groove 5, the sealing strip 6 acts as a seal to prevent cold air from leaking out of the refrigerator, and can prevent outside air from entering the refrigerator and affecting the quality of food.

[0035] In this embodiment, the outer shell 1 is convexly formed into an arc-shaped portion 13. The arc-shaped portion 13 increases the overall strength of the outer shell 1 and prevents the outer shell 1 from deforming when the opening is vacuumed. The outer shell 1 can be made of metal, and the connecting frame 11 is formed by bending the outer shell 1.

[0036] In this embodiment, the material of the core material 2 is ultrafine rock wool or ultrafine glass wool. Ultrafine glass wool also includes centrifugal wool, chopped strands, etc., and is mainly composed of one or more materials such as glass fiber, ceramic fiber, rock wool fiber, etc. In another embodiment, the core material 2 includes an air-permeable and impermeable powder bag and a powdered material. The powdered material is arranged in the air-permeable and impermeable powder bag, wherein the powdered material is expanded perlite or fumed silica. Furthermore, an adsorbent 21 is provided on the core material 2 to absorb water vapor retained in the core material 2. Preferably, the frame 4 is made of a material with low thermal conductivity, such as a frame made of polyethylene plastic or polypropylene plastic. The frame 4 made of a material with low thermal conductivity can serve as a thermal bridge at the edge of the door body.

[0037] As an example, the outer side of the bottom shell 3 is provided with an air extraction hole 33 for facilitating air extraction. The air extraction hole 33 is sealed by a barrier sealing film. The provision of the air extraction hole 33 facilitates the vacuuming of the core material 2 through the air extraction hole 33. After the vacuum is extracted, the core material 2 is sealed by the barrier sealing film. Of course, the entire structure can also be placed directly in a vacuum chamber for vacuuming.

[0038] To improve the extraction efficiency of the extraction holes 33, a fiberglass mesh 7 is provided on the inner sidewall and bottom of the bottom shell 3, thereby forming a flow channel on the inner sidewall and bottom of the bottom shell 3, facilitating the rapid extraction of gas from the core material 2. To prevent the bottom shell 3 from being scratched, an anti-scratch layer is provided on the outside of the bottom shell 3.

[0039] In this embodiment, the first connecting surface 111, the connecting edge 32, and the second connecting surface 41 are heat-sealed together. For example, a PE layer may be provided on the first connecting surface 111, the connecting edge 32, and the second connecting surface 41. The PE layer is heated to melt the PE layer, thereby heat-sealing the first connecting surface 111, the connecting edge 32, and the second connecting surface 41 together. In this way, the frame 4, the outer shell 1, and the bottom shell 3 are heat-sealed together, achieving a sealed connection between the frame 4, the outer shell 1, and the bottom shell 3. The connecting edge 32 is located between the frame 4 and the outer shell 1, and the frame 4 serves to protect the connecting edge 32.

[0040] Furthermore, a positioning groove 14 is provided on the housing 1, and a positioning block 42 is provided on the frame 4 to be inserted into the positioning groove 14. By providing the positioning groove 14 and the positioning block 42, when assembling the shell-type vacuum door body, the positioning block 42 on the frame 4 is inserted into the positioning groove 14 on the housing 1, so that the frame 4 is accurately positioned and assembled with the housing 1.

[0041] When making the shell-type vacuum door body, when the core material 2 is not compressed, the thickness of the core material 2 is greater than the sum of the depth of the first groove 12 and the depth of the second groove 31. After the core material 2 is placed in the outer shell 1, force is applied to the bottom shell 3 to compress the core material 2, so that after the bottom shell 3 and the outer shell 1 are vacuum-sealed and connected, the outer shell 1 is not easy to deform.

[0042] In order to further reduce the deformation of the outer shell 1 after vacuum heat sealing, reinforcing ribs 15 are provided in the outer shell 1. By providing the reinforcing ribs 15, the strength of the outer shell 1 can be effectively improved, making the outer shell 1 less likely to deform.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A shell type vacuum door body, characterized by: Including shell, core, bottom shell and frame; The housing includes a connecting frame, a first connecting surface is formed on the connecting frame, and a first groove is formed in the housing; The lower portion of the core material is disposed in the first groove; The bottom shell is formed by punching or blistering a barrier film, a second groove is formed in the bottom shell for accommodating the upper part of the core material, a connecting edge is formed on the side of the bottom shell, and the lower part of the connecting edge is arranged on the first connecting surface, and a vacuum cavity is formed between the bottom shell and the outer shell; A second connecting surface is formed at the bottom of the frame, the outer side of the second connecting surface is connected to the first connecting surface, the inner side of the second connecting surface is connected to the upper part of the connecting edge, and a door sealing groove is formed between the inner side of the frame and the bottom shell.

2. The shell type vacuum door body according to claim 1, characterized in that: It also includes a sealing strip, which is arranged in the door sealing groove.

3. The shell type vacuum door body according to claim 1, characterized in that: The outer portion of the shell is convex to form an arc portion.

4. The shell type vacuum door body according to claim 1, characterized in that: The core material is made of ultrafine rock wool or ultrafine glass wool.

5. The shell type vacuum door body according to claim 1, characterized in that: The core material comprises an air-permeable and powder-impermeable bag and a powdery material, wherein the powdery material is arranged in the air-permeable and powder-impermeable bag.

6. The shell type vacuum door body according to claim 1, characterized in that: An adsorbent is arranged on the core material.

7. The shell type vacuum door body according to claim 1, characterized in that: The frame is made of a material with low thermal conductivity.

8. The shell type vacuum door body according to claim 1, characterized in that: An anti-scratch layer is provided on the outer side of the bottom shell.

9. The shell type vacuum door body according to claim 1, characterized in that: The first connecting surface, the connecting edge and the second connecting surface are heat-sealed together.

10. The shell type vacuum door body according to claim 1, characterized in that: A positioning groove is provided on the shell, and a positioning block inserted into the positioning groove is provided on the frame.

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