Single-to-tunnel type cold storage storage box

Abstract

The utility model provides a single variable tunnel type refrigeration storage box, which relates to the technical field of refrigeration, and comprises a box body, the box body comprises a top plate, a bottom plate, a pair of side plates, a pair of carrying steps and a pair of rotating shafts, and the top plate, the bottom plate and the pair of side plates are mutually matched to form a refrigeration chamber; the pair of carrying steps are arranged on the inner wall faces of the two side plates in a mirror symmetry mode, the pair of rotating shafts are arranged in a mirror symmetry mode along the middle axis faces of the side plates, and the two ends of the rotating shafts are connected to the two side plates respectively. The top plates comprise the first top plate and the second top plate, the first top plate is rotationally arranged on one rotating shaft, and the second top plate is rotationally arranged on the other rotating shaft. According to the variable tunnel type refrigeration house storage box, the first top plate and the second top plate are wound on the different rotating shafts correspondingly, the top plates can be flexibly opened when articles need to be taken and placed, the problem that a cover of a traditional overall cover lifting type structure is difficult to open is avoided, and the variable tunnel type refrigeration house storage box is particularly suitable for space limited occasions.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a single variable tunnel cold storage box. Background Technology

[0002] Cold chain logistics technology has wide applications in modern food, pharmaceutical, and fresh produce distribution. To ensure the quality and safety of perishable goods during transportation and storage, cold storage equipment with refrigeration capabilities is often required for low-temperature preservation. Currently, existing tunnel-type cold storage boxes generally adopt a rigid, sealed cavity design, typically opening and closing the box through sliding doors or double doors, and achieving cooling through side-blowing or top-blowing cold air.

[0003] However, such structures still have the following drawbacks in practical applications: 1) Existing cold storage boxes usually use sliding or rotating doors for opening and closing, which makes the whole process of handling or maintaining the goods inconvenient, especially in situations where the space above the box is limited, the opening of the top structure is difficult, affecting operational efficiency; 2) Since the top cover of the box is mostly a single-piece structure, the assembly tolerance is large and the sealing effect is poor, resulting in cold air leakage, increased energy consumption, and even problems such as reduced cooling efficiency and uneven cooling of goods.

[0004] Therefore, there is an urgent need to provide a new type of variable tunnel cold storage box. Utility Model Content

[0005] The variable tunnel cold storage box provided by this utility model allows the top cover to be opened flexibly when items need to be retrieved or placed by having the first top plate and the second top plate respectively mounted on different rotating axes. This avoids the difficulty of opening the traditional one-piece hinged structure and is especially suitable for space-constrained occasions. In addition, the first top plate and the second top plate work together to form a stepped closed refrigeration chamber under the first working condition, which can form a relatively stable horizontal sealing structure in the closed state, thereby reducing cold air leakage and improving energy efficiency ratio and cooling efficiency. A single variable tunnel cold storage box includes: a box body comprising a top plate, a bottom plate, a pair of side plates, a pair of mounting steps, and a pair of rotating shafts. The top plate, the bottom plate, and the pair of side plates cooperate to form a refrigeration chamber. The pair of mounting steps are arranged in a mirror-symmetrical manner on the inner walls of the two side plates. The pair of rotating shafts are arranged in a mirror-symmetrical manner along the central axis of the side plates, and the two ends of the rotating shafts are respectively connected to the two side plates. The top plate includes a first top plate and a second top plate. The first top plate is rotatably mounted on one of the rotating shafts, and the second top plate is rotatably mounted on the other rotating shaft. In a first operating condition, both the first top plate and the second top plate rotate to a first preset plane to cooperate with the mounting steps to close the refrigeration chamber. The first preset plane is parallel to the plane where the bottom plate is located. In a second operating condition, the first top plate and / or the second top plate rotate to a second preset plane to open the refrigeration chamber. The second preset plane intersects the plane where the bottom plate is located.

[0006] Furthermore, the first top plate includes a first body portion and a first protrusion portion, and the second top plate includes a second body portion and a second protrusion portion. When in the first working condition, the axial plane of the first protrusion portion abuts against the second body portion, the axial plane of the second protrusion portion abuts against the first body portion, and the radial plane of the first protrusion portion fits against the radial plane of the second protrusion portion.

[0007] Furthermore, the first protrusion and the second protrusion have the same shape and are both cuboids, and a rubber sealing layer is arranged on the radial plane of both the first protrusion and the radial plane of the second protrusion.

[0008] Furthermore, the number of boxes is multiple, and the variable tunnel cold storage box also includes a panel. The panel includes a hollow panel and a partition panel. The hollow panel is a plate-like structure with a central through hole, and the partition panel is a solid plate-like structure. The multiple boxes are connected in sequence, and there is an installation gap between two adjacent boxes. The width of the installation gap, the thickness of the hollow panel, and the thickness of the partition panel are all the same, so that the hollow panel or the partition panel can be selectively embedded in the installation gap, and the two adjacent refrigeration chambers can be separated or connected.

[0009] Furthermore, the housing also includes a locking part, which is arranged on the side plate and extends outward along the extension direction of the side plate. Both the hollow plate and the partition plate have a slot that is adapted to the locking part. Through the cooperation of the slot and the locking part, both the hollow plate and the partition plate can be embedded in the housing.

[0010] Furthermore, the engaging portion includes a first engaging unit and a second engaging unit. Both the first engaging unit and the second engaging unit include a wedge-shaped locking strip, and the small-diameter end face of the wedge-shaped locking strip is connected to the side plate, while the large-diameter end face of the wedge-shaped locking strip is away from the side plate. The first engaging unit of one of the housings cooperates with the second engaging unit of the adjacent housing to form the installation gap. The cross-sectional shape of the installation gap is defined as a first cross-section, which includes a large-diameter port at both ends and a small-diameter port located between the large-diameter ports at both ends. The cross-sectional shapes of the hollow plate and the partition plate are defined as a second cross-section and a third cross-section, respectively, and both the second cross-section and the third cross-section are the same as the first cross-section.

[0011] Furthermore, the first engaging unit further includes a protrusion block arranged on the large-diameter end face of the wedge-shaped locking strip, and the second engaging unit further includes a groove arranged on the large-diameter end face of the wedge-shaped locking strip, wherein the protrusion block and the groove are adapted to each other and both have a circular arc surface.

[0012] Furthermore, the protrusion and the groove are respectively located at the middle of the large-diameter end face of the wedge-shaped card strip.

[0013] Furthermore, the two corners of the large-diameter end face of the wedge-shaped card strip are rounded, and the small-diameter end face of the wedge-shaped card strip and the inclined surface of the wedge-shaped card strip form an acute angle transition; the two sides of the same side plate are respectively provided with the first engaging unit and the second engaging unit.

[0014] Furthermore, it also includes a closing plate, which snaps onto the box body located on the side to seal the refrigeration chamber. Compared with the prior art, the single variable tunnel cold storage box provided by this utility model has at least the following beneficial effects:

[0015] 1. This variable tunnel-type cold storage box, by having the first and second top plates respectively mounted on different rotating axes, allows for flexible opening of the top cover when items need to be retrieved or placed, avoiding the difficulty of opening the traditional one-piece hinged structure. It is especially suitable for space-constrained occasions. In addition, the first and second top plates work together to form a stepped closed refrigeration chamber under the first working condition, which can form a relatively stable horizontal sealing structure in the closed state, thereby reducing cold air leakage and improving energy efficiency ratio and cooling efficiency.

[0016] 2. By selectively embedding hollow panels or partition panels in the installation gap between two adjacent boxes, the connection or separation of the refrigeration chambers can be realized according to actual needs, meeting various usage scenarios such as multi-temperature zone management, segmented refrigeration or centralized cooling. At the same time, the hollow panels and partition panels have the same thickness as the installation gap, which can simplify the structural design and production process, facilitate standardized manufacturing and inventory management, and improve interchangeability and assembly efficiency.

[0017] 3. The variable tunnel cold storage box adopts a wedge-shaped locking strip design in its connection structure. Through the precise interlocking of the locking part and the slot, it can achieve rapid assembly while ensuring good airtightness and thermal insulation effect, reducing cold loss and improving energy efficiency ratio. In addition, the structure can be quickly assembled and disassembled without the use of bolts or welding. It is particularly suitable for cold storage sites that require temporary deployment and frequent layout changes, such as emergency cold storage and temporary preservation passages. Attached Figure Description

[0018] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0019] Figure 1 This is a structural schematic diagram of the housing under the first operating condition, as shown in some embodiments of this specification;

[0020] Figure 2 This is a structural schematic diagram of the housing in the second operating condition, according to some embodiments of this specification;

[0021] Figure 3 This is a top view of a portion of the housing shown in some embodiments according to this specification;

[0022] Figure 4 This is one of the structural schematic diagrams of a variable tunnel cold storage box according to some embodiments of this specification;

[0023] Figure 5 This is the second structural schematic diagram of a variable tunnel cold storage box shown in some embodiments of this specification;

[0024] Figure 6 This is a cross-sectional view of a hollow plate shown in some embodiments of this specification;

[0025] Figure 7 This is a structural schematic diagram of the partition plate shown in some embodiments of this specification;

[0026] Figure 8 This is a cross-sectional view of the partition plate shown in some embodiments of this specification;

[0027] Figure 9 This is a schematic diagram showing the interaction between the first top plate and the second top plate according to some embodiments of this specification.

[0028] Icons: 100-Variable tunnel cold storage box; 11-Box body; 111-Refrigeration chamber; 112-Top plate; 113-Bottom plate; 114-Side plate; 12-Hollow plate; 13-Partition plate; 141-First locking unit; 142-Second locking unit; 143-Wedge-shaped locking strip; 144-Protrusion; 145-Groove; 15-Closing plate; 16-Mounting step; 17-Rotating shaft; 1121-First top plate; 11211-First body part; 11212-First protrusion; 1122-Second top plate; 11221-Second body part; 11222-Second protrusion; 18-Rubber sealing layer. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] Please refer to Figures 1-9 ,in, Figure 3The schematic diagram omits the top plate. This application embodiment provides a single variable tunnel cold storage box 100, including a box body 11. The box body 11 includes a top plate 12, a bottom plate 113, a pair of side plates 114, a pair of mounting steps 16, and a pair of rotating shafts 17. The top plate, bottom plate 113, and the pair of side plates 114 cooperate to form a refrigeration chamber 111. The pair of mounting steps 16 are arranged mirror-symmetrically on the inner walls of the two side plates 114. The pair of rotating shafts 17 are arranged mirror-symmetrically along the central axis of the side plates 114, and both ends of the rotating shafts 17 are connected to the two side plates 114 respectively. The top plate includes a first top plate 1121 and a second top plate 113. 122, the first top plate 1121 is rotatably mounted on one of the rotating shafts 17, and the second top plate 1122 is rotatably mounted on the other rotating shaft 17; wherein, in the first working condition, both the first top plate 1121 and the second top plate 1122 rotate to the first preset plane to cooperate with the step 16 to close the cooling chamber 111, and the first preset plane is parallel to the plane where the bottom plate 113 is located; in the second working condition, the first top plate 1121 and / or the second top plate 1122 rotate to the second preset plane to open the cooling chamber 111, and the second preset plane intersects the plane where the bottom plate 113 is located.

[0032] It is worth noting that the variable tunnel cold storage box 100 can flexibly open the top plate when it is necessary to take out or put in items by having the first top plate 1121 and the second top plate 1122 respectively wound around different rotating shafts 17. This avoids the difficulty of opening the traditional one-piece flip-top structure and is especially suitable for space-constrained occasions. In addition, the first top plate 1121 and the second top plate 1122 cooperate with the step 16 to close the refrigeration chamber 111 in the first working condition, which can form a relatively stable horizontal sealing structure in the closed state, thereby reducing cold air leakage and improving energy efficiency ratio and cooling efficiency.

[0033] like Figure 9 As shown, the first top plate 1121 includes a first body portion 11211 and a first protrusion 11212, and the second top plate 1122 includes a second body portion 11221 and a second protrusion 11222. When in the first working condition, the axial plane of the first protrusion 11212 abuts against the second body portion 11221, the axial plane of the second protrusion 11222 abuts against the first body portion 11211, and the radial plane of the first protrusion 11212 fits against the radial plane of the second protrusion 11222.

[0034] It is worth noting that the variable tunnel cold storage box 100 forms a multi-faceted sealing structure by bidirectionally fitting the axial and radial planes of the first protrusion 11212 and the second protrusion 11222. This improves the airtightness and thermal insulation between the top plates, effectively preventing cold air leakage from the refrigeration chamber 111 and reducing energy consumption. Simultaneously, the multi-plane contact forms a mutually supporting structure, preventing top plate misalignment or warping under external stress (such as stacking pressure or changes in ambient temperature), ensuring the long-term stable operation of the refrigeration chamber 111. Furthermore, the geometric fit between the protrusions provides significant mechanical limiting and guiding effects when the two top plates are closed, enabling rapid alignment and precise fitting without high-precision control, reducing assembly and usage difficulty.

[0035] In this embodiment, the first protrusion 11212 and the second protrusion 11222 have the same shape and are both cuboids. A rubber sealing layer 18 is arranged on the radial plane of the first protrusion 11212 and the radial plane of the second protrusion 11222.

[0036] Understandably, by providing rubber sealing layers 18 on the radial planes of both the first protrusion 11212 and the second protrusion 11222, flexible fit and deformation compensation capabilities can be provided when the top plate is closed, effectively filling assembly tolerances and minor surface unevenness, and further improving the airtightness of the entire refrigeration chamber 111. Furthermore, the protrusions are identical in shape and all are cuboid structures, enabling symmetrical use and universal assembly of parts, reducing manufacturing costs, storage costs, and maintenance difficulty, and improving the standardization of the equipment.

[0037] In this embodiment, the variable tunnel cold storage box 100 includes multiple boxes 11 and panels. Each panel includes a hollow panel 12 and a partition panel 13. The hollow panel 12 is a plate-like structure with a central through hole, and the partition panel 13 is a solid plate-like structure. The multiple boxes 11 are connected sequentially, and there is an installation gap between adjacent boxes 11. The width of the installation gap, the thickness of the hollow panel 12, and the thickness of the partition panel 13 are all the same, allowing for the selective embedding of either the hollow panel 12 or the partition panel 13 into the installation gap, thus separating or connecting two adjacent refrigeration chambers 111.

[0038] It should be noted that the width of the installation gap, the thickness of the hollow plate 12, and the thickness of the partition plate 13 mentioned in this embodiment are all their maximum width or maximum thickness.

[0039] It should also be noted that, Figure 2 For the variable tunnel cold storage box 100 without the plate inserted, the position of the installation gap can be as follows: Figure 2 As shown.

[0040] It is worth noting that the variable tunnel cold storage box 100 can selectively embed hollow plates 12 or partition plates 13 in the installation gap between two adjacent boxes 11, so as to realize the connection or isolation of the refrigeration chambers 111 according to actual needs, and meet various usage scenarios such as multi-temperature zone management, segmented refrigeration or centralized cooling. At the same time, the hollow plates 12 and partition plates 13 are consistent with the thickness of the installation gap, which can simplify the structural design and production process, facilitate standardized manufacturing and inventory management, and improve interchangeability and assembly efficiency.

[0041] In this embodiment, the housing 11 also includes a locking part; the locking part is arranged on the side plate 114 and extends outward along the extension direction of the side plate 114. The hollow plate 12 and the partition plate 13 both have a slot that is compatible with the locking part. Through the cooperation of the slot and the locking part, the hollow plate 12 and the partition plate 13 can be embedded in the housing 11.

[0042] It is worth noting that by setting hollow plates 12 and partition plates 13 with slots, and having them cooperate with the engaging parts extending from the side plates 114 of the housing 11, tool-free assembly and disassembly of modules can be achieved, thereby improving on-site installation and subsequent maintenance efficiency. Furthermore, the slots and engaging parts have a mechanical limiting and tight-fitting structure, ensuring a secure connection while maintaining structural airtightness, effectively preventing cold air leakage and external heat infiltration, and guaranteeing the thermal insulation performance of the refrigeration chamber 111. Simultaneously, since the engaging structure is arranged on the outside of the side plates 114 and along their extension direction, multiple housings 11 can be continuously spliced ​​horizontally, and different functional panels can be selected as needed, achieving flexible expansion of the system structure and function.

[0043] In this embodiment, the engaging part includes a first engaging unit 141 and a second engaging unit 142. Both the first engaging unit 141 and the second engaging unit 142 include a wedge-shaped locking strip 143, and the small diameter end face of the wedge-shaped locking strip 143 is connected to the side plate 114, while the large diameter end face of the wedge-shaped locking strip 143 is away from the side plate 114.

[0044] The first engaging unit 141 of one of the housings 11 cooperates with the second engaging unit 142 of the adjacent housing 11 to form an installation gap. The cross-sectional shape of the installation gap is defined as the first cross-section, which includes the large-diameter ports at both ends and the small-diameter port located between the large-diameter ports at both ends. The cross-sectional shapes of the hollow plate 12 and the partition plate 13 are defined as the second cross-section and the third cross-section, respectively. The second cross-section and the third cross-section are the same as the first cross-section.

[0045] It is worth noting that the wedge-shaped locking strip 143 connects to the side plate 114 with its small-diameter end and forms a wedge-shaped mating structure with its large-diameter end facing outward. This allows the two housings 11 to achieve self-centering and guiding positioning during splicing, avoiding misalignment and improving the assembly accuracy between components. At the same time, the first cross-section (i.e., the installation gap) formed between the two wedge-shaped locking strips 143 has a uniform geometry, which can accurately fit the cross-sectional dimensions of the hollow plate 12 and the partition plate 13, ensuring matching, stability, and sealing during the installation process. Its structure is similar to that of a dovetail groove, and it can also have a gradually tightening clamping effect after insertion, which can enhance the interlocking strength of the hollow plate 12 or the partition plate 13 within the installation gap and prevent loosening or falling off during use.

[0046] Optionally, the first engaging unit 141 further includes a protrusion 144, which is arranged on the large-diameter end face of the wedge-shaped locking strip 143. The second engaging unit 142 further includes a groove 145, which is arranged on the large-diameter end face of the wedge-shaped locking strip 143. The protrusion 144 and the groove 145 are adapted to each other and both have a circular arc surface.

[0047] Specifically, by setting up the mating structure of the protrusion 144 and the groove 145, shear resistance and displacement resistance are provided when the two engaging units are interlocked, thereby preventing misalignment or sliding of adjacent housings 11 under external force and enhancing the overall structural stability. In addition, the circular arc surface design of the protrusion 144 and the groove 145 has a certain guiding and positioning function, which can automatically guide them into the correct position during assembly, improving assembly efficiency and avoiding misinsertion or jamming.

[0048] In this embodiment, the protrusion 144 and the groove 145 are located at the middle of the large-diameter end face of the wedge-shaped card strip 143.

[0049] It is worth noting that the protrusion 144 and the groove 145 are positioned in the center, which allows the two wedge-shaped locking strips 143 to be subjected to more even force during the mating process, avoiding tilting or deformation of the mating part due to uneven loading, thereby improving the overall splicing stability. At the same time, the centrally positioned protrusion and groove structure can serve as a positioning reference for the mating center, guiding the plates into the correct position from the initial stage of installation, improving the alignment accuracy and efficiency during the assembly process, and reducing human error.

[0050] In this embodiment, the two corners of the large-diameter end face of the wedge-shaped card strip 143 are rounded, and the small-diameter end face of the wedge-shaped card strip 143 and the inclined surface of the wedge-shaped card strip 143 are transitioned at an acute angle.

[0051] It is worth noting that the rounded corner transition of the large-diameter end face can effectively alleviate stress concentration at the edge of the large-diameter end face, reduce the risk of structural cracking, extend the service life of the locking strip, and improve the overall durability and impact resistance of the structure. However, since sealing performance and preventing cuts to users are more important considerations between the small-diameter end and the inclined surface, a sharp-angle transition is used. This makes it easier for the locking strip to be wedged to its limit position during insertion, improving the firmness and anti-loosening ability of the locking structure.

[0052] In this embodiment, the two sides of the same side plate 114 are respectively provided with a first engaging unit 141 and a second engaging unit 142.

[0053] It is worth noting that different types of interlocking units (such as convex and concave interlocking) are set at both ends of the side panel 114, so that the adjacent boxes 11 have a unique matching direction when splicing, thereby preventing the problem of connection failure or structural failure due to incorrect direction during assembly.

[0054] In this embodiment, the partition plate 13 includes a support layer and a thermal insulation layer. There are multiple support layers, and the thermal insulation layer is arranged between two adjacent support layers. The thermal conductivity of the thermal insulation layer is less than that of the support layer.

[0055] It's worth noting that the insulation layer uses a material with a lower thermal conductivity than the supporting layers and is sandwiched between multiple supporting layers, forming a sandwich-like structure. This effectively blocks heat conduction paths, significantly reducing heat transfer between adjacent cold storage compartments and improving insulation performance. Simultaneously, the insulation layer, sandwiched between two rigid supporting layers, provides reinforcement and protection, preventing the insulation material from collapsing, failing, or compromising its sealing performance under pressure during long-term use. Depending on the specific implementation environment, the insulation layer can be an internal high-efficiency polyurethane foam layer, etc.

[0056] In this embodiment, there are at least two support layers that abut against the box 11 on both sides.

[0057] It is worth noting that there are two support layers located at both ends of the partition plate 13, which can further prevent the insulation layer from being damaged or crushed, and improve the convenience of maintenance and replacement.

[0058] In this embodiment, a closing plate 15 is also included, which is snapped onto the box 11 located on the side to close the cooling chamber 111.

[0059] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0060] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of this application. However, those skilled in the art will recognize that embodiments of this invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of this application.

[0061] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0062] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0063] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0064] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0065] The above description of the embodiments shown in this utility model (including the content in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments of this application, and such modifications will be within the spirit and scope of the utility model.

[0066] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of the embodiments of this application. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring various aspects of the embodiments of this application.

Claims

1. A single variable tunnel cold storage box, characterized in that, The enclosure includes a top plate, a bottom plate, a pair of side plates, a pair of mounting steps, and a pair of rotating shafts. The top plate, the bottom plate, and the pair of side plates cooperate to form a cooling chamber. A pair of mounting steps are arranged in mirror symmetry on the inner wall surfaces of the two side plates, and a pair of rotating shafts are arranged in mirror symmetry along the central axis of the side plates, with the two ends of the rotating shafts respectively connected to the two side plates; the top plate includes a first top plate and a second top plate, the first top plate being rotatably mounted on one of the rotating shafts, and the second top plate being rotatably mounted on the other rotating shaft; In the first operating condition, both the first top plate and the second top plate rotate to the first preset plane to cooperate with the mounting step to close the refrigeration chamber. The first preset plane is parallel to the plane where the bottom plate is located. In the second operating condition, the first top plate and / or the second top plate rotate to the second preset plane to open the refrigeration chamber. The second preset plane intersects with the plane where the bottom plate is located.

2. The single variable tunnel cold storage box according to claim 1, characterized in that, The first top plate includes a first body portion and a first protrusion portion, and the second top plate includes a second body portion and a second protrusion portion. When in the first working condition, the axial plane of the first protrusion portion abuts against the second body portion, the axial plane of the second protrusion portion abuts against the first body portion, and the radial plane of the first protrusion portion fits against the radial plane of the second protrusion portion.

3. The single variable tunnel cold storage box according to claim 2, characterized in that, The first protrusion and the second protrusion have the same shape and are both cuboids. A rubber sealing layer is arranged on the radial plane of the first protrusion and the radial plane of the second protrusion.

4. The single variable tunnel cold storage box according to claim 1, characterized in that, The number of boxes is multiple. The variable tunnel cold storage box also includes a panel. The panel includes a hollow panel and a partition panel. The hollow panel is a plate-like structure with a central through hole, and the partition panel is a solid plate-like structure. The multiple boxes are connected in sequence, and there is an installation gap between two adjacent boxes. The width of the installation gap, the thickness of the hollow panel, and the thickness of the partition panel are all the same, so that the hollow panel or the partition panel can be selectively embedded in the installation gap to separate or connect two adjacent refrigeration chambers.

5. The single variable tunnel cold storage box according to claim 4, characterized in that, The enclosure also includes a locking part, which is arranged on the side panel and extends outward along the extension direction of the side panel. Both the hollow panel and the partition panel have a slot that is compatible with the locking part. Through the cooperation of the slot and the locking part, both the hollow panel and the partition panel can be embedded in the enclosure.

6. The single variable tunnel cold storage box according to claim 5, characterized in that, The engaging part includes a first engaging unit and a second engaging unit. Both the first engaging unit and the second engaging unit include a wedge-shaped locking strip. The small-diameter end face of the wedge-shaped locking strip is connected to the side plate, and the large-diameter end face of the wedge-shaped locking strip is away from the side plate. The first engaging unit of one of the boxes cooperates with the second engaging unit of the adjacent box to form the installation gap. The cross-sectional shape of the installation gap is defined as the first cross-section, which includes the large-diameter ports at both ends and the small-diameter port located between the large-diameter ports at both ends. The cross-sectional shapes of the hollow board and the partition board are defined as the second cross-section and the third cross-section, respectively. The second cross-section and the third cross-section are the same as the first cross-section.

7. The single variable tunnel cold storage box according to claim 6, characterized in that, The first engaging unit further includes a protrusion block arranged on the large-diameter end face of the wedge-shaped locking strip. The second engaging unit further includes a groove arranged on the large-diameter end face of the wedge-shaped locking strip. The protrusion block and the groove are adapted to each other and both have a circular arc surface.

8. The single variable tunnel cold storage box according to claim 7, characterized in that, The protrusion and the groove are respectively located at the middle of the large-diameter end face of the wedge-shaped card strip.

9. The single variable tunnel cold storage box according to claim 6, characterized in that, The large-diameter end face of the wedge-shaped locking strip has rounded corners on both sides, and the small-diameter end face of the wedge-shaped locking strip has an acute angle transition with the inclined surface of the wedge-shaped locking strip; the two sides of the same side plate have the first locking unit and the second locking unit respectively.

10. The single variable tunnel cold storage box according to claim 1, characterized in that, It also includes a closing plate that snaps onto the housing located on the side to seal the cooling chamber.

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