Ultra-low temperature refrigerator lining opening frost crack prevention structure and foaming tool thereof

Abstract

The utility model discloses an ultra-low temperature refrigerator lining opening anti-frost-crack structure and a foaming tool thereof, and relates to the technical field of ultra-low temperature refrigerators, the technical scheme is that the ultra-low temperature refrigerator lining opening anti-frost-crack structure comprises a box shell and an inner container arranged in the box shell, and a heat preservation cavity used for being filled with a foaming layer is arranged between the box shell and the inner container; an outer edge plate opening with an L-shaped section is formed in the upper end of the inner container; a lining opening is formed in the box shell in a matched mode, and a lower suspension plate wall folded downwards is arranged on the inner edge of the lining opening. And hollow openings which are spaced by a certain distance are formed between the outer edge plate opening and the lower suspension plate wall. According to the structure, a traditional installation mode that the lining opening and the inner container are connected is changed into a disconnected and non-contact mode, so that temperature conduction of the inner container to the lining opening is greatly reduced, cracking of the lining opening is avoided, and durability and attractiveness of the lining opening are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-low temperature refrigerators, in particular to an ultra-low temperature refrigerator lining anti-freezing cracking structure and a foaming tooling thereof. Background Art

[0002] With the development of medical and new manufacturing technologies, the market demand for low-temperature storage is increasing. Extremely low-temperature storage equipment is being used in more and more fields. At present, the interruption of the cold chain of ultra-low temperature refrigerators is achieved by combining plastic linings and soft sealing strips. The plastic linings are made of PVC extrusion. Since the mainstream ultra-low temperature refrigerators are -86℃, modified PVC is usually required to improve its low-temperature resistance. Even so, the plastic lining of the refrigerator may still crack after freezing. Usually, the plastic lining on the refrigerator can only be replaced for repair. For refrigerators in the temperature zone below -86℃, there is currently no relatively stable modified PVC production process in the industry. For example, the plastic lining of each -150℃ ultra-low temperature product will have a large number of cracks. Usually, only bakelite and metal plates can be inlaid on the plastic lining to cover the cracks, which not only reduces the insulation performance of the refrigerator, but also increases costs and reduces the aesthetics of the product.

[0003] In view of this, a design or technical improvement is now proposed to solve the above problems.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0005] The utility model aims to solve the above-mentioned shortcomings and provide a frost crack prevention structure for the lining of an ultra-low temperature refrigerator.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A structure for preventing freezing cracks of a lining of an ultra-low temperature refrigerator, comprising a box shell and an inner liner arranged in the box shell, wherein a heat-insulating cavity for filling a foaming layer is arranged between the box shell and the inner liner;

[0008] The upper end of the inner container is provided with an outer edge plate opening with an L-shaped cross section;

[0009] The box shell is provided with a lining opening, and the inner edge of the lining opening is provided with a downwardly folded lower hanging plate wall;

[0010] An opening with a certain distance between the outer edge plate opening and the lower hanging plate wall is provided.

[0011] Furthermore, a plugging plate for separating the empty opening from the heat-insulating cavity is attached to the lower end surface of the outer edge plate opening and the lower hanging plate wall, and the plugging plate is made of a soft material.

[0012] Furthermore, a decorative piece made of soft material is provided between the outer edge plate opening and the lower hanging plate wall for covering the lower hanging plate wall, a card joint is provided on the side of the decorative piece opposite to the lower hanging plate wall, and a card groove for adapting to the card joint is provided on the side of the lower hanging plate wall opposite to the card joint.

[0013] Furthermore, a U-shaped snap-on fitting with the outer edge plate opening is provided on a side of the decorative member opposite to the outer edge plate opening.

[0014] Furthermore, an L-shaped folding plate fitted with the surface of the outer edge plate opening is provided on the side of the U-shaped bayonet opposite to the inner liner, and a cushion frame fitted with the surface thereof is provided on the L-shaped folding plate.

[0015] A foaming tooling for the anti-freezing cracking structure of the lining of an ultra-low temperature refrigerator comprises a cushion frame for cushioning at an empty opening, a beveled cover plate fitted with the inclined surface of the lining, and a support frame supported on the upper surface of the lining.

[0016] Furthermore, a clamping plate frame is provided on the side of the cushion frame opposite to the inner liner, and a recess which is matched and engaged with the outer edge plate opening is provided at the lower end of the side of the cushion frame opposite to the clamping plate frame.

[0017] Compared with the prior art, the beneficial effect of this solution is that this structure changes the traditional installation method of the connection between the liner and the inner tank to make it disconnected and non-contact, thereby greatly reducing the temperature conduction from the inner tank to the liner, thereby avoiding the cracking of the liner and greatly improving its durability and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional stereoscopic schematic diagram of the utility model during foaming;

[0021] Figure 3 It is a cross-sectional schematic diagram of the utility model during foaming;

[0022] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0023] Figure 5 For this utility model Figure 3 The enlarged schematic diagram of point A in the middle;

[0024] Figure 6 For this utility model Figure 4 The enlarged schematic diagram of point B in the middle;

[0025] Figure 7 It is a three-dimensional schematic diagram of the foaming tooling of the utility model;

[0026] Figure 8 It is a three-dimensional schematic diagram of the installation of the foaming tooling in the utility model.

[0027] In the figure: 1. box shell; 11. liner; 12. insulation cavity; 13. outer edge plate opening; 2. lining opening; 21. lower hanging plate wall; 22. empty opening; 3. plugging plate; 4. decorative part; 41. clamping joint; 42. clamping groove; 43. U-shaped clamping joint; 44. L-shaped folding plate; 5. cushion frame; 51. bevel cover plate; 52. support frame. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] like Figure 1-8 The illustrated embodiment of the anti-freezing cracking structure of the lining of an ultra-low temperature refrigerator comprises a box shell 1 and an inner liner 11 arranged in the box shell 1, wherein a heat-insulating cavity 12 for filling a foaming layer is arranged between the box shell 1 and the inner liner 11; an outer edge plate opening 13 with an L-shaped cross-section is arranged at the upper end of the inner liner 11; a lining opening 2 is matched with the box shell 1, and a downwardly folded lower hanging plate wall 21 is arranged on the inner edge of the lining opening 2; an empty opening 22 with a certain distance between the outer edge plate opening 13 and the lower hanging plate wall 21 is arranged. In this scheme, a non-contact structure is arranged between the lining opening 2 and the inner liner 11 to reduce the temperature conduction of the inner liner 11 to the lining opening 2, so that the lining opening 2 will not be reduced to a temperature that can be frozen and cracked, thereby protecting the integrity of its structure.

[0030] In one embodiment, a plugging plate 3 for separating the air opening 22 from the insulation cavity 12 is attached to the lower end surface of the outer edge plate opening 13 and the lower hanging plate wall 21. The plugging plate 3 is made of soft material. Since the insulation cavity 12 is filled with a foaming layer, under normal conditions, the setting of the air opening 22 will cause part of the foaming layer to be exposed to the outside. Therefore, the plugging plate 3 is provided to isolate it to prevent the foaming liquid from leaking from the air opening 22 during the foaming process.

[0031] In one embodiment, a decorative piece 4 made of a soft material and used to cover the lower hanging plate wall 21 is further provided between the outer edge plate opening 13 and the lower hanging plate wall 21, a clamping joint 41 is provided on the side of the decorative piece 4 relative to the lower hanging plate wall 21, a clamping groove 42 adapted to the clamping joint 41 is provided on the side of the lower hanging plate wall 21 relative to the clamping joint 41, a U-shaped clamping joint 43 that is buckled with the outer edge plate opening 13 is further provided on the side of the decorative piece 4 relative to the outer edge plate opening 13, and an L-shaped folding plate 44 that is in contact with the surface of the outer edge plate opening 13 is further provided on the side of the U-shaped clamping joint 43 relative to the inner liner 11, and the L-shaped folding plate 44 that is in contact with the surface of the outer edge plate opening 13 is further provided. A cushion frame 5 is provided on the plate 44 and is in contact with its surface. Since the structure of this scheme realizes the anti-freeze cracking effect of the lining mouth 2 by providing the hollow opening 22, in order to ensure the aesthetics of the hollow opening 22, an adaptive decorative member 4 is provided thereon to modify the appearance of this place. It is connected with the clamping groove 42 through the clamping joint 41 at one end of the decorative member 4, and is buckled with the outer edge plate opening 13 through the U-shaped clamping joint 43 at the other end, thereby forming a cover for the hollow opening 22. Then, the cushion frame 5 is pressed on the surface of the L-shaped folding plate 44 and fixed by bolts, so that it is stably installed between the inner liner 11 and the lining mouth 2.

[0032] During the foaming process of this product, a foaming tool is required, which is composed of three parts, including a cushion frame 5 for cushioning the empty opening 22, a bevel cover plate 51 fitted with the inclined surface of the lining opening 2, and a support frame 52 supported on the upper surface of the lining opening 2. Due to the existence of the empty opening 22 set between the inner tank 11 and the lining opening 2, when the refrigerator needs to be foamed, a support needs to be set between the inner tank 11 and the lining opening 2 for positioning to prevent deformation of the structure during the foaming process. Therefore, the foaming tool corresponding to the product is used. When in use, the tool is embedded in the cushion frame 5 at the empty opening 22, and then the outer edge plate openings 13 on both sides are abutted against the lower hanging plate wall 21 to prevent displacement, thereby ensuring the stability of the overall structure during foaming. When foaming is completed, the cushion frame 5 can be easily pulled out of the empty opening 22 by pulling the support frame 52, and it is easy to use.

[0033] In one embodiment, a splint frame 53 is further provided on the side of the cushion frame 5 opposite to the inner liner 11, and a recess 54 matching and engaging with the outer edge plate opening 13 is further provided at the lower end of the cushion frame 5 on the side opposite to the splint frame 53. During the use of the foaming tooling, the recess 54 is clamped with the outer edge plate opening 13, thereby positioning the outer edge plate opening 13 and further enhancing the mutual stability between the structures during foaming.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A structure for preventing frost cracking of a lining of an ultra-low temperature refrigerator, comprising a box shell (1) and an inner liner (11) arranged in the box shell (1), wherein a heat-insulating cavity (12) for filling a foaming layer is arranged between the box shell (1) and the inner liner (11), characterized in that: The upper end of the inner container (11) is provided with an outer edge plate opening (13) with an L-shaped cross section; The box shell (1) is matched with a lining (2), and a downwardly folded lower hanging plate wall (21) is provided on the inner side of the lining (2); An empty opening (22) with a certain distance between the outer edge plate opening (13) and the lower hanging plate wall (21) is provided.

2. The anti-freezing crack structure of the ultra-low temperature refrigerator lining according to claim 1, characterized in that: A plugging plate (3) for separating the air opening (22) from the heat-insulating cavity (12) is attached to the lower end surface of the outer edge plate opening (13) and the lower hanging plate wall (21), and the plugging plate (3) is made of a soft material.

3. The ultra-low temperature refrigerator lining anti-freezing cracking structure according to any one of claims 1 or 2, characterized in that: A decorative piece (4) made of a soft material and used for covering the lower hanging plate wall (21) is also provided between the outer edge plate opening (13) and the lower hanging plate wall (21); a clamping joint (41) is provided on the side of the decorative piece (4) opposite to the lower hanging plate wall (21); and a clamping groove (42) adapted to the clamping joint (41) is provided on the side of the lower hanging plate wall (21) opposite to the clamping joint (41).

4. The ultra-low temperature refrigerator lining anti-freezing cracking structure according to claim 3, characterized in that: A U-shaped snap-on opening (43) which is buckled with the outer edge plate opening (13) is also provided on the side of the decorative piece (4) opposite to the outer edge plate opening (13).

5. The ultra-low temperature refrigerator lining anti-freezing cracking structure according to claim 4, characterized in that: An L-shaped folding plate (44) is also provided on the side of the U-shaped bayonet (43) opposite to the inner liner (11) and is fitted with the surface of the outer edge plate opening (13). A cushion frame (5) is provided on the L-shaped folding plate (44) and is fitted with the surface thereof.

6. A foaming tooling for the anti-freeze cracking structure of the ultra-low temperature refrigerator lining according to claim 1, characterized in that: It comprises a cushion frame (5) for cushioning the empty opening (22), a bevel cover plate (51) fitted with the bevel of the lining opening (2), and a support frame (52) supported on the upper surface of the lining opening (2).

7. The foaming tooling of the ultra-low temperature refrigerator lining anti-freeze cracking structure according to claim 6, characterized in that: A clamping plate frame (53) is also provided on the side of the cushion frame (5) opposite to the inner liner (11), and a recess (54) adapted to fit with the outer edge plate opening (13) is also provided at the lower end of the side of the cushion frame (5) opposite to the clamping plate frame (53).

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