Foldable freezer and its corner sealing structure

Abstract

This application relates to the field of storage technology, and provides a foldable freezer and its corner sealing structure. The foldable freezer includes six aluminum plates with a first insulation layer embedded in them. The six aluminum plates are four side plates that are hinged to the top and bottom of one of the four side plates in sequence, a top plate that is hinged to the top of one of the four side plates, and a bottom plate that is hinged to the bottom of one of the four side plates. When the foldable freezer is in the unfolded state, the edges of two adjacent side plates are joined together. A limiting member is provided on the outer surface of the side plate near the adjacent side plate. The limiting member is connected to the corresponding side plate and forms an insertion groove. The corner sealing structure includes two insertion parts connected at right angles. The two insertion parts are respectively inserted into the insertion groove formed on the adjacent side plates and cover the splicing seam between the edges of the two adjacent side plates, thereby improving the freezing effect and freezing time of the foldable freezer.

Description

Technical Field

[0001] This application relates to the field of storage technology, and in particular to a foldable freezer and its corner sealing structure. Background Technology

[0002] When conducting deep-sea fishing, the caught fish need to be frozen and transported back to land. In existing technologies, when freezing fish using foldable boxes, gaps exist between the hinged box panels, resulting in poor freezing effects and shorter freezing times. Summary of the Invention

[0003] This application provides a foldable freezer and its corner sealing structure, which can improve the freezing effect and freezing time of the foldable freezer.

[0004] The first aspect of this application provides a corner sealing structure for a foldable freezer. The foldable freezer includes six aluminum plates with a first insulation layer embedded in them. The six aluminum plates are four side plates that are hinged to the top and bottom of one of the four side plates in sequence, a top plate that is hinged to the top of one of the four side plates, and a bottom plate that is hinged to the bottom of one of the four side plates. When the foldable freezer is in the unfolded state, the edges of two adjacent side plates that are close to each other are joined together.

[0005] A limiting member is provided on the outer surface of the side plate near the adjacent side plate. The limiting member is connected to the corresponding side plate and forms an insertion groove. The corner sealing structure includes two insertion parts connected at right angles. The two insertion parts are respectively inserted into the insertion groove formed on the adjacent side plate and cover the splicing seam between the edges of the two adjacent side plates.

[0006] Furthermore, the corner sealing structure includes a hard layer and a soft layer, the soft layer being disposed between the side plate and the hard layer, and the hard layer being disposed between the soft layer and the limiting member.

[0007] Furthermore, the corner sealing structure also includes a second insulation layer, which is disposed between the rigid layer and the soft layer.

[0008] Furthermore, the closer to the joint between the two side panels, the thicker the insertion part becomes, in order to press the joint of the two side panels together.

[0009] Furthermore, the surface of the plug portion facing the corresponding side plate is provided with a guide groove, and the guide groove extends along the height direction of the side plate.

[0010] A second aspect of this application provides a foldable freezer, characterized in that the foldable freezer includes an angle sealing structure as described in any of the preceding claims and six aluminum plates embedded with a first insulation layer. The six aluminum plates are four side plates that are hinged one end to the other in sequence, a top plate that is hinged to the top end of one of the four side plates, and a bottom plate that is hinged to the bottom end of one of the four side plates. A limiting member is provided on the outer surface of the side plate near the adjacent side plate. The limiting member is connected to the corresponding side plate and forms an insertion groove. When the foldable freezer is in the unfolded state, the adjacent edges of two adjacent side plates are joined together. Two insertion parts are respectively inserted into the insertion groove formed on the adjacent side plates and cover the joint between the edges of the two adjacent side plates to seal the joint between the edges of the two adjacent side plates.

[0011] Furthermore, the foldable freezer also includes four first hinge structures and two second hinge structures;

[0012] A first hinge structure is provided between any two side panels. Each first hinge structure includes multiple first hinge posts and a first hinge rod. Multiple first hinge posts of the same first hinge structure are alternately arranged on two adjacent edge areas of two side panels that are close to each other. The first hinge rod passes through multiple first hinge posts on adjacent side panels to hinge the two adjacent side panels. All first hinge posts are arranged on the inner surface of the corresponding aluminum plate so that when the foldable freezer is in the unfolded state, the adjacent edges of two side panels that are close to each other are joined together.

[0013] A second hinge structure is provided between the top plate and the top of one of the side plates, and another second hinge structure is provided between the bottom plate and the bottom of one of the side plates. Each second hinge structure includes multiple second hinge posts and a second hinge rod. Multiple second hinge posts of the same second hinge structure are alternately arranged in two edge areas close to each other between the top plate or bottom plate and one of the side plates. The second hinge rod passes through multiple second hinge posts of adjacent top plates or bottom plates and one of the side plates. The second hinge posts on the side plates are arranged on the outer surface of the side plates, and the second hinge posts on the top plate and the bottom plate are arranged on the inner surface of the bottom plate. So that when the foldable freezer is in the unfolded state, the top plate is joined to the top edge of the four side plates and the bottom plate is joined to the bottom edge of the four side plates. During the folding process of the foldable freezer, both the top plate and the bottom plate can be flipped outward and stacked with the corresponding side plates.

[0014] Furthermore, a sealing ring is provided on the inner surface of the top plate corresponding to the top edges of the four side plates; a sealing ring is provided on the inner surface of the bottom plate corresponding to the bottom edges of the four side plates; and / or

[0015] The top plate has locking structures on the other three sides not equipped with the second hinge structure; the bottom plate has locking structures on the other three sides not equipped with the second hinge structure; and / or

[0016] The two second hinge structures are arranged diagonally.

[0017] Furthermore, when the foldable freezer is in the unfolded state, the lengths of the two oppositely arranged side panels are equal, and the lengths of the two oppositely arranged side panels in one group are greater than the lengths of the two oppositely arranged side panels in the other group, so that when the foldable freezer is in the folded state, the two closely spaced first hinge structures are staggered; and / or

[0018] The end of the limiting member away from the corresponding side panel has an abutment portion. When the foldable freezer is in the unfolded state, two adjacent abutment portions abut against each other, so that the two adjacent side panels are perpendicular to each other.

[0019] Furthermore, the surface of the plug-in portion facing the corresponding side plate is provided with a flow guide groove, the flow guide groove extends along the height direction of the side plate, and the bottom of the base plate is also provided with a flow collecting chassis, the flow collecting chassis being connected to the flow guide groove.

[0020] The foldable freezer box and its corner sealing structure provided in this application have the following beneficial effects: the corner sealing structure can reduce the dissipation rate of cold energy in the freezer box through the splicing seam of adjacent side panels, extend the low-temperature freezing time of the freezer box, and help preserve the fish for a long time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded structural diagram of a foldable freezer in one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the foldable freezer in a folded state according to one embodiment of this application;

[0024] Figure 3 This is a structural schematic diagram of a foldable freezer according to another embodiment of this application, and an enlarged structural schematic diagram of its corner sealing structure.

[0025] Explanation of reference numerals in the attached drawings: 1-Foldable freezer; 10-Aluminum plate; 11-Side plate; 111-Front side plate; 112-Right side plate; 113-Rear side plate; 114-Left side plate; 12-Top plate; 13-Bottom plate; 14-Limiting component; 141-Insertion groove; 142-Abutting part; 20-First hinge structure; 21-First hinge post; 22-First hinge rod; 30-Second hinge structure; 31-Second hinge post; 32-Second hinge post; 40-Sealing component; 50-Angle sealing structure; 51-Insertion part; 511-Second insulation layer; 512-Hard layer; 513-Soft layer; 514-Flow guide groove; 60-Collection chassis. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] Please see Figure 1-2 This application provides a foldable freezer 1, which includes six aluminum plates 10 with a first insulation layer (not shown in the figure) embedded in them, four first hinge structures 20 and two second hinge structures 30. The six aluminum plates 10 are four side plates 11 that are hinged to the top and bottom of one of the four side plates 11 in sequence, a top plate 12 that is hinged to the top of one of the four side plates 11, and a bottom plate 13 that is hinged to the bottom of one of the four side plates 11.

[0028] In some specific embodiments, the four side panels 11 can be a front side panel 111, a right side panel 112, a rear side panel 113, and a left side panel 114 connected sequentially. The top panel 12 can be hinged to the top end of the front side panel 111, and the bottom panel 13 can be hinged to the bottom end of the rear side panel 113. The foldable freezer 1 has an unfolded state and as shown in the figure. Figure 2 The folded state is shown. When the foldable freezer 1 is in the unfolded state, the front side panel 111 and the rear side panel 113 are positioned opposite each other, the right side panel 112 and the left side panel 114 are positioned opposite each other, and the top panel 12 and the bottom panel 13 are positioned opposite each other. The front side panel 111, the right side panel 112, the rear side panel 113, the left side panel 114, the top panel 12, and the bottom panel 13 together form a storage space for accommodating items such as fish (not shown in the figure). Figure 2 As shown, when the folding freezer 1 is in the folded state, the top plate 12, the front side plate 111 and the left side plate 114 are folded together, and the bottom plate 13, the rear side plate 113 and the right side plate 112 are folded together.

[0029] Specifically, a first hinge structure 20 is provided between any two side plates 11, that is, a first hinge structure 20 is provided between each pair of the front side plate 111, the right side plate 112, the rear side plate 113, and the left side plate 114. Each first hinge structure 20 includes multiple first hinge posts 21 and a first hinge rod 22. Multiple first hinge posts 21 of the same first hinge structure 20 are alternately arranged in two edge areas of adjacent side plates 11 that are close to each other. The first hinge rod 22 passes through multiple first hinge posts 21 on adjacent side plates 11 to hinge the adjacent two side plates 11. That is, the hinge between adjacent two side plates 11 is realized through the first hinge structure 20, thereby realizing the folding between the front side plate 111 and the left side plate 114, and the folding between the rear side plate 113 and the right side plate 112. Furthermore, all the first hinge posts 21 are provided on the inner surface of the corresponding side panels 11. When the foldable freezer 1 is in the unfolded state, the edges of two adjacent side panels 11 that are close to each other can be joined together, thereby reducing the joint between two adjacent side panels 11 when the foldable freezer 1 is in the unfolded state and reducing the probability that items in the foldable freezer 1 will fall out from the joint between the side panels 11.

[0030] Furthermore, a second hinge structure 30 is provided between the top plate 12 and the top end of one of the side plates 11, and another second hinge structure 30 is provided between the bottom plate 13 and the bottom end of one of the side plates 11; each second hinge structure 30 includes multiple second hinge posts 31 and second hinge rods 32, the multiple second hinge posts 31 of the same second hinge structure 30 are alternately provided at two adjacent edge areas of the top plate 12 or bottom plate 13 and one of the side plates 11, and the second hinge rods 32 pass through adjacent top plates 12 or bottom plates 11. The plate 13 and one of the side plates 11 have multiple second hinge posts 31. The second hinge posts 31 on the side plate 11 are disposed on the outer surface of the side plate 11, and the second hinge posts 31 on the top plate 12 and the bottom plate 13 are disposed on the inner surface of the bottom plate 13. When the foldable freezer 1 is in the unfolded state, the top plate 12 is fitted to the top edge of the four side plates 11 and the bottom plate 13 is fitted to the bottom edge of the four side plates 11. During the folding process of the foldable freezer 1, the top plate 12 and the bottom plate 13 can be flipped outward and stacked with the corresponding side plates 11. Understandably, the top plate 12 and bottom plate 13 are slightly larger than the area enclosed by the edges of the four side plates 11, so that when the foldable freezer 1 is in the unfolded state, the top plate 12 can fit with the top edge of the four side plates 11 and the bottom plate 13 can fit with the bottom edge of the four side plates 11, thereby reducing the seams between the top plate 12 and bottom plate 13 and the side plates 11 when the foldable freezer 1 is in the unfolded state, and reducing the probability that items inside the foldable freezer 1 will fall out from the seams between the top plate 12 and bottom plate 13 and the side plates 11.

[0031] It should be noted that the second hinge post 31 on the side plate 11 is located on the outer surface of the side plate 11, and the second hinge post 31 on the top plate 12 and the bottom plate 13 is located on the inner surface of the bottom plate 13. This is so that when the foldable freezer 1 is folded, the top plate 12 and the bottom plate 13 can be flipped outward and folded with the front side plate 111 and the rear side plate 113 respectively. At the same time, when the foldable freezer 1 is unfolded, the top plate 12 and the bottom plate 13 can be spliced ​​with the top edge and the bottom edge of the four side plates 11 respectively to reduce the splicing seam. When the second hinge post 31 on the side plate 11 is located on the inner surface of the side plate 11, or when the second hinge post 31 on the top plate 12 and the bottom plate 13 is located on the outer surface of the bottom plate 13, the effect of the top plate 12 and the bottom plate 13 flipping outward cannot be achieved, and the freezer 1 cannot achieve the folding function.

[0032] When folding the foldable freezer 1 from its unfolded state to its folded state, the top plate 12 is first flipped outward relative to the front side plate 111 until it overlaps with the front side plate 111. The bottom plate 13 is then flipped outward relative to the rear side plate 113 until it overlaps with the rear side plate 113. Next, the front side plate 111 overlaps with the left side plate 114, and the rear side plate 113 overlaps with the right side plate 112. This results in the top plate 12, the front side plate 111, and the left side plate 114 folding together, and the bottom plate 13, the rear side plate 113, and the right side plate 112 folding together as well. The folded foldable freezer 1 reduces the space it occupies on the ship, and the smaller seams between adjacent aluminum plates 10 reduce the probability of items falling out of the foldable freezer 1 through the seams between adjacent aluminum plates 10.

[0033] Furthermore, the aluminum plate 10 has a first insulation layer embedded within it. When items such as fish need to be frozen at low temperatures, the first insulation layer can reduce the rate of cold dissipation within the freezer 1, extending the low-temperature freezing time of the freezer 1 and thus helping to preserve the fish for an extended period. The first insulation layer can be foam or insulation cotton.

[0034] Please see Figure 1In some embodiments, a sealing element 40 is provided on the inner surface of the top plate 12 at the position corresponding to the top edge of the four side plates 11. When the foldable freezer 1 is in the unfolded state, the top plate 12 presses the sealing element 40 against the top edge of the four side plates 11, thereby increasing the sealing between the top plate 12 and the four side plates 11. This not only prevents items from falling out between the top plate 12 and the side plates 11, but also reduces the probability of cold energy leakage from the joint between the top plate 12 and the side plates 11, thereby extending the low-temperature freezing time of the freezer 1. Similarly, a sealing element 40 is provided on the inner surface of the base plate 13 at the bottom edge of the four side plates 11. When the foldable freezer 1 is in the unfolded state, the base plate 13 presses the sealing element 40 against the bottom edge of the four side plates 11, which can increase the sealing between the base plate 13 and the four side plates 11. This not only prevents items from falling out between the base plate 13 and the side plates 11, but also reduces the probability of cold air leakage from the joint between the base plate 13 and the side plates 11, thereby extending the low-temperature freezing time of the freezer 1. Specifically, the sealing element 40 can be a rubber ring.

[0035] In some embodiments, the other three sides of the top plate 12 that are not provided with the second hinge structure 30 are provided with locking structures (not shown in the figure). When the foldable freezer 1 is in the unfolded state, the locking structures lock the top plate 12 to the corresponding side plate 11, so that the sealing element 40 is interference-fitted with both the top plate 12 and the side plate 11, thereby improving the sealing performance between the top plate 12 and the four side plates 11. Similarly, the other three sides of the bottom plate 13 that are not provided with the second hinge structure 30 are provided with locking structures. When the foldable freezer 1 is in the unfolded state, the locking structures lock the bottom plate 13 to the corresponding side plate 11, so that the sealing element 40 is interference-fitted with both the bottom plate 13 and the side plate 11, thereby improving the sealing performance between the bottom plate 13 and the four side plates 11.

[0036] Please see Figure 1In some embodiments, the two second hinge structures 30 are arranged diagonally. For example, when one of the second hinge structures 30 is located between the front edge of the top plate 12 and the top edge of the front side plate 111, the other second hinge structure 30 is located between the rear edge of the bottom plate 13 and the bottom edge of the rear side plate 113. In this way, not only can the folding or unfolding of the top plate 12 and the bottom plate 13 be independent of each other, but also when the thickness of the six aluminum plates 10 is the same, the top plate 12, the front side plate 111, and the left side plate 114 can be folded together, and the bottom plate 13, the rear side plate 113, and the right side plate can be folded together. After the top plate 12, front side plate 111, and left side plate 114 are folded together, the total thickness of the top plate 12, front side plate 111, and left side plate 114 is equal to the total thickness of the bottom plate 13, rear side plate 113, and right side plate 112. Thus, when multiple folded freezer boxes 1 are stacked, the stacked freezer boxes 1 can be stacked flat, and there will be no situation where one side of the stacked freezer boxes 1 is higher than the other, causing the freezer box 1 at the top to slip. This can improve the stability of stacking multiple freezer boxes 1, and because they can be stacked more tightly, the space occupied by multiple freezer boxes 1 on the ship can be further reduced.

[0037] Please see Figure 1-2 It is understandable that when the four side panels 11 are of equal length, after folding the freezer 1, the two adjacent first hinge structures 20 overlap vertically. This causes the middle of the folded freezer 1 to bulge due to the overlap of the two first hinge structures 20. Therefore, when multiple freezers 1 are stacked, the top freezer 1 may easily slip off. Therefore, please refer to... Figure 1-2 In some embodiments, when the foldable freezer 1 is in the unfolded state, the lengths of the two oppositely arranged side panels 11 are equal, and the length of the two oppositely arranged side panels 11 in one group is greater than the length of the two oppositely arranged side panels 11 in the other group, for example... Figure 2 The right side panel 112 and the left side panel 114 are of equal length, the front side panel 111 and the rear side panel 113 are of equal length, and the right side panel 112 is longer than the front side panel 111, and the left side panel 114 is longer than the rear side panel 113. This allows the two first hinge structures 20 that are close to each other to be staggered when the foldable freezer 1 is in the folded state, instead of being stacked on top of each other, thereby improving the flatness of the folded freezer 1. When multiple freezers 1 are stacked, each freezer 1 can be stacked flat, thereby improving the stability of the stacking of freezers 1. Furthermore, since they can be stacked relatively tightly, the space occupied by multiple freezers 1 on the ship can be further reduced.

[0038] Please see Figure 3In some embodiments, the foldable freezer 1 also includes four corner sealing structures 50. The corner sealing structures 50 are detachably connected to two adjacent side panels 11. When the foldable freezer 1 is in the unfolded state, the corner sealing structures 50 are installed between the two adjacent side panels 11 to seal the joint between the edges of the two adjacent side panels 11, thereby improving the sealing performance between the adjacent side panels 11. In this way, not only can items be prevented from falling out between the adjacent side panels 11, but the probability of cold energy leakage between the joint between the adjacent side panels 11 can also be reduced, which can further extend the low-temperature freezing time of the freezer 1.

[0039] Please see Figure 3 In some embodiments, a limiting member 14 is provided on the outer surface of the side plate 11 near the adjacent side plate 11. The limiting member 14 is connected to the corresponding side plate 11 and forms an insertion groove 141. The corner sealing structure 50 includes two insertion parts 51 connected at right angles. The two insertion parts 51 are respectively inserted into the insertion groove 141 formed on the adjacent side plate 11 and cover the splicing seam between the edges of the two adjacent side plates 11.

[0040] In the above embodiment, corresponding to a corner sealing structure 50, a limiting member 14 is provided on each of the two adjacent side plates 11. An insertion groove 141 is formed between the limiting member 14 and the connected side plate 11. The insertion groove 141 can extend from the bottom edge to the top edge of the side plate 11 along the height direction of the freezer 1. At the same time, the corner sealing structure 50 is configured to include two insertion parts 51 connected at right angles. The two insertion parts 51 can be inserted into the insertion groove 141 formed on the adjacent side plates 11 respectively, and cover the splicing seam between the edges of the two adjacent side plates 11. Thus, the corner sealing structure 50 and the side plate 11 are detachably connected by insertion, and the splicing seam between the edges of the two adjacent side plates 11 is sealed. It is understandable that the corner sealing structure 50 is inserted into the corresponding insertion slot 141 after the two adjacent side plates 11 are unfolded to 90 degrees. When the freezer 1 needs to be folded, the corner sealing structure 50 needs to be pulled out from the corresponding insertion slot 141 before the folding between the adjacent side plates 11 can be achieved.

[0041] Please see Figure 3 In some embodiments, the end of the limiting member 14 away from the corresponding side plate 11 has an abutment portion 142. When the foldable freezer 1 is in the unfolded state, two adjacent abutment portions 142 abut against each other, so that the two adjacent side plates 11 are perpendicular to each other. This can prevent the adjacent side plates 11 from being over-unfolded, which would reduce the storage space of the freezer 1. It can also prevent the shape of the insertion slot 141 from being unable to match the corner sealing structure 50, which would prevent the corner sealing structure 50 from being inserted into the corresponding insertion slot 141.

[0042] In some embodiments, the corner sealing structure 50 includes a second insulation layer 511, a rigid layer 512, and a soft layer 513. The soft layer 513 is disposed between the side plate 11 and the rigid layer 512, the rigid layer 512 is disposed between the soft layer 513 and the second insulation layer 511, and the second insulation layer 511 is disposed between the rigid layer 512 and the limiting member 14. The second insulation layer 511 can be foam or insulation cotton. The rigid layer 512 is connected to the soft layer 513 and the second insulation layer 511 to support the soft layer 513 and the second insulation layer 511. The soft layer 513 and the second insulation layer 511 can deform to facilitate the insertion of the corner sealing structure 50 into the insertion groove 141 formed by the limiting member 14 and the side plate 11, and to facilitate the removal of the corner sealing structure 50 from the insertion groove 141. The second insulation layer 511 can prevent cold energy from dissipating through the joint between the side panels 11, as well as the soft layer 513 and the hard layer 512. This can further reduce the rate of cold energy dissipation in the freezer 1, extend the low-temperature freezing time of the freezer 1, and is beneficial for the long-term preservation of fish. After the corner sealing structure 50 is inserted into the corresponding insertion slot 141, the limiting member 14, the second insulation layer 511, the hard layer 512, the soft layer 513, and any two adjacent side panels 11 are interference-fitted, thereby improving the sealing performance of the corner sealing structure 50 on the joint between the side panels 11.

[0043] Furthermore, the closer to the joint between the two side plates 11, the thicker the insertion part 51 becomes, and the more tightly the abutting part presses the thicker insertion part 51, thereby pressing the thicker insertion part 51 against the joint of the two side plates, further improving the sealing effect of the corner sealing structure 50 on the joint.

[0044] Please see Figure 1 as well as Figure 3 In some embodiments, the surface of the insertion part 51 facing the corresponding side plate 11 is provided with a guide groove 514, which extends along the height direction of the side plate 11. The bottom of the bottom plate 13 is also provided with a collection tray 60, which is connected to the guide groove 514. When the low-temperature freezing function is achieved by adding ice to the freezer 1, the ice will melt into dissolved water, and a small amount of dissolved water will flow out from the joint between the side plates 11. By providing the guide groove 514 and the collection tray 60, the dissolved water flowing out from the joint between the side plates 11 can be collected from the guide groove 514 into the collection tray 60, avoiding the dissolved water from flowing everywhere and being difficult to clean.

[0045] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A corner sealing structure for a foldable freezer, characterized in that, The foldable freezer includes six aluminum plates with a first insulation layer embedded in them. The six aluminum plates are four side plates that are hinged to the top and bottom of one of the four side plates in sequence, a top plate that is hinged to the top of one of the four side plates, and a bottom plate that is hinged to the bottom of one of the four side plates. When the foldable freezer is in the unfolded state, the edges of two adjacent side plates that are close to each other are joined together. A limiting member is provided on the outer surface of the side panel near the adjacent side panel. The limiting member is connected to the corresponding side panel and forms an insertion groove. The insertion groove can extend from the bottom edge of the side panel to the top edge along the height direction of the foldable freezer. The end of the limiting member away from the corresponding side panel has an abutment part. When the foldable freezer is in the unfolded state, two adjacent abutment parts abut against each other. The corner sealing structure includes two insertion parts connected at right angles. The two insertion parts are respectively inserted into the insertion groove formed on the adjacent side panels and cover the splicing seam between the edges of the two adjacent side panels. The corner sealing structure includes a second insulation layer, a rigid layer, and a soft layer. The soft layer is disposed between the side plate and the rigid layer, the rigid layer is disposed between the soft layer and the second insulation layer, and the second insulation layer is disposed between the rigid layer and the limiting member.

2. The corner sealing structure according to claim 1, characterized in that, The closer to the joint between the two side panels, the thicker the insertion part becomes, so as to press the joint of the two side panels together.

3. The corner sealing structure according to claim 1 or 2, characterized in that, The surface of the plug portion facing the corresponding side plate is provided with a flow guide groove, which extends along the height direction of the side plate.

4. A foldable freezer, characterized in that, The foldable freezer includes an angle sealing structure as described in any one of claims 1-3 and six aluminum plates embedded with a first insulation layer. The six aluminum plates are four side plates that are hinged one end to the other in sequence, a top plate that is hinged to the top end of one of the four side plates, and a bottom plate that is hinged to the bottom end of one of the four side plates. A limiting member is provided on the outer surface of the side plate near the adjacent side plate. The limiting member is connected to the corresponding side plate and forms an insertion groove. When the foldable freezer is in the unfolded state, the adjacent edges of two side plates are joined together. The two insertion parts are respectively inserted into the insertion groove formed on the adjacent side plates and cover the splicing seam between the edges of the two adjacent side plates to seal the splicing seam between the edges of the two adjacent side plates.

5. The foldable freezer according to claim 4, characterized in that, The foldable freezer also includes four first hinge structures and two second hinge structures; A first hinge structure is provided between any two side panels. Each first hinge structure includes multiple first hinge posts and a first hinge rod. Multiple first hinge posts of the same first hinge structure are alternately arranged on two adjacent edge areas of two side panels that are close to each other. The first hinge rod passes through multiple first hinge posts on adjacent side panels to hinge the two adjacent side panels. All first hinge posts are arranged on the inner surface of the corresponding aluminum plate so that when the foldable freezer is in the unfolded state, the adjacent edges of two side panels that are close to each other are joined together. A second hinge structure is provided between the top plate and the top of one of the side plates, and another second hinge structure is provided between the bottom plate and the bottom of one of the side plates. Each second hinge structure includes multiple second hinge posts and a second hinge rod. Multiple second hinge posts of the same second hinge structure are alternately arranged in two edge areas close to each other between the top plate or bottom plate and one of the side plates. The second hinge rod passes through multiple second hinge posts of adjacent top plates or bottom plates and one of the side plates. The second hinge posts on the side plates are arranged on the outer surface of the side plates, and the second hinge posts on the top plate and the bottom plate are arranged on the inner surface of the bottom plate. So that when the foldable freezer is in the unfolded state, the top plate is joined to the top edge of the four side plates and the bottom plate is joined to the bottom edge of the four side plates. During the folding process of the foldable freezer, both the top plate and the bottom plate can be flipped outward and stacked with the corresponding side plates.

6. The foldable freezer according to claim 5, characterized in that, A sealing ring is provided on the inner surface of the top plate corresponding to the top edges of the four side plates; a sealing ring is provided on the inner surface of the bottom plate corresponding to the bottom edges of the four side plates; and / or The top plate has locking structures on the other three sides not equipped with the second hinge structure; the bottom plate has locking structures on the other three sides not equipped with the second hinge structure; and / or The two second hinge structures are arranged diagonally.

7. The foldable freezer according to claim 5, characterized in that, When the foldable freezer is in the unfolded state, the two oppositely arranged side panels are of equal length, and the length of two oppositely arranged side panels in one group is greater than the length of two oppositely arranged side panels in the other group, so that when the foldable freezer is in the folded state, the two closely spaced first hinge structures are staggered; and / or When the foldable freezer is in the unfolded state, two adjacent abutting parts abut each other, so that the two adjacent side panels are perpendicular to each other.

8. The foldable freezer according to any one of claims 4-7, characterized in that, The insertion part is provided with a flow guide groove on the surface of the corresponding side plate. The flow guide groove extends along the height direction of the side plate. The bottom of the base plate is also provided with a flow collecting chassis, which is connected to the flow guide groove.

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