A folding dual-temperature zone fresh-keeping box

Abstract

This utility model discloses a foldable dual-temperature zone food storage box, relating to the field of food storage boxes. It addresses the problem in existing technologies where refrigeration is primarily achieved through a cold storage plate on one side, while temperature control on the other side relies on the rotation and airflow intensity of a fan, resulting in temperatures in the two spaces not being independent and affecting temperature regulation. The lower part of the food storage box body is divided by a partition to form a lower equipment cavity. Heat dissipation components are installed on both sides of the lower equipment cavity. Each heat dissipation component includes a fixed metal plate with multiple cooling fins fixed from front to back on its upper surface. A rectangular groove is formed on the lower end of the partition along the area where the cooling fins are located. A lower support is bolted to the lower end of the fixed metal plate. Side extension platforms are integrally connected to the upper ends of the lower support. Semiconductor cooling fins are placed within the rectangular space formed between the fixed metal plate, the lower support, and the two side extension platforms.

Description

Technical Field

[0001] This utility model relates to the field of food storage boxes, specifically a foldable dual-temperature zone food storage box. Background Technology

[0002] As a key piece of equipment for ensuring food freshness in modern logistics, home storage, and outdoor activities, the technological development of insulated boxes has always revolved around improving insulation performance, space utilization, and ease of use. Traditional insulated boxes typically employ a single-temperature zone design, achieving constant internal temperature control through an overall insulation structure combined with refrigeration / heating elements. With the diversification of consumer scenarios, market demands for the functionality of insulated boxes have become increasingly refined. These demands have spurred the development of multi-temperature zone preservation technology, which combines physical isolation with independent temperature control systems to achieve the parallel maintenance of different temperature zones within a single container.

[0003] Existing multi-temperature zone preservation solutions are mainly divided into two structural types: horizontal partitioning and vertical partitioning. Horizontal partitioning designs divide the container into independent upper and lower or left and right compartments using built-in partitions, with each compartment equipped with an independent refrigeration module or phase change material package. For example, the Chinese authorized patent (a dual-temperature zone multi-mode logistics intelligent refrigerated box) with announcement number CN 222104035 U features a vertically installed heat-insulating panel inside the refrigerated box, dividing it into temperature zone one and temperature zone two. A cold storage plate is installed on the surface of temperature zone one opposite to the heat-insulating panel. The surface of the heat-insulating panel has inter-temperature zone communication holes, and temperature-regulating fans are installed at these holes. Corresponding to temperature zone one, the refrigerated box has an external communication hole one, with a temperature-regulating fan installed at this hole. Similarly, corresponding to temperature zone two, the refrigerated box has an external communication hole two, with a temperature-regulating fan installed at this hole. Temperature sensors are also installed on the inner wall of the refrigerated box corresponding to temperature zones one and two, respectively.

[0004] Although the aforementioned existing technology has the function of combining a set of cold storage plates with multiple fans to meet the different cooling needs of two temperature zones, the cooling is mainly achieved through the cold storage plate on one side, while the temperature control of the other temperature zone relies on the rotation and airflow intensity of the fans. This makes the temperatures in the two spaces not independent of each other, and the temperature in the airflow zone is always higher than the temperature in the zone where the cold storage plate is located, which affects temperature regulation. Utility Model Content

[0005] The purpose of this invention is to provide a foldable dual-temperature zone food storage box to solve the problem mentioned in the background art that the refrigeration is mainly achieved by a cold storage plate on one side, while the temperature control of the other temperature zone relies on the rotation and airflow intensity of the fan, which makes the temperatures in the two spaces not independent and affects temperature regulation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foldable dual-temperature zone preservation box, comprising a preservation box body, wherein the lower end of the preservation box body is divided by a partition to form a lower equipment cavity, and heat dissipation components are installed on both sides of the lower equipment cavity. The heat dissipation components include a fixed metal plate, and multiple cooling fins are fixed on the upper end of the fixed metal plate from front to back. A rectangular groove is formed on the lower end face of the partition along the area where the cooling fins are located. A lower support is fixed to the lower end of the fixed metal plate by bolts. Side extension platforms are integrally connected to the upper ends of the lower support. A semiconductor cooling fin is placed in the rectangular space formed between the fixed metal plate, the lower support, and the two side extension platforms. The circuit of the semiconductor cooling fin extends backward through the preservation box body.

[0007] Preferably, a fixed horizontal plate is fixed to the lower end of the side extension platform, and multiple heat sinks are fixed from front to back in the middle area of ​​the lower end of the fixed horizontal plate. A lower fixed frame is fixed to the lower end of the fixed horizontal plate by bolts. An internal heat dissipation fan is installed inside the lower fixed frame along the lower end of the heat sinks. Several lower air inlet slots are arrayed on the lower end face of the lower fixed frame.

[0008] Preferably, rectangular slots are provided on the left and right sides of the lower end face of the food storage box body, the lower end of the lower fixing frame extends downward through the rectangular slots, and support pads are provided at the four corners of the lower end of the food storage box body.

[0009] Preferably, a lower extension platform is integrally connected to the outer periphery of the upper surface of the food storage box body. The two side walls of the lower extension platform are at the same height, the rear wall of the lower extension platform is lower than the side wall height, and the front wall of the lower extension platform is lower than the rear wall height. The front end, rear end, and left and right sides of the upper end of the lower extension platform are respectively connected to a first folding plate, a second folding plate, a third folding plate, and a fourth folding plate via hinges. The upper surfaces of the first folding plate, the second folding plate, the third folding plate, and the fourth folding plate are flush. A silicone layer is provided between adjacent first folding plates, second folding plates, third folding plates, and fourth folding plates and between the first folding plates, second folding plates, third folding plates, and fourth folding plates and the lower extension platform.

[0010] Preferably, a C-shaped fixing strip is fixed in the middle of the inner end face of the first folding plate and the second folding plate, and an intermediate partition plate is inserted into the two C-shaped fixing strips.

[0011] Preferably, a vacuum chamber is provided inside the first folding plate, the second folding plate, the third folding plate, the fourth folding plate and the intermediate partition plate.

[0012] Preferably, the upper outer ends of the first folding plate, the second folding plate, the third folding plate, and the fourth folding plate are all provided with a top cover, and the space between the main body of the food storage box, the first folding plate, the second folding plate, the third folding plate, the fourth folding plate, and the top cover is divided by an intermediate partition plate to form a first food storage cavity and a second food storage cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the semiconductor cooling plate is stably installed in the lower equipment cavity. The cooling plate and the semiconductor cooling plate work together to reduce the temperature in the first and second preservation cavities, thereby improving the refrigeration efficiency of the preservation box and enhancing the preservation effect. Furthermore, the two heat dissipation components control the temperature of the first and second preservation cavities respectively. The first and second preservation cavities are separated by an intermediate partition plate, so that the temperature control of the two areas is independent and the mutual influence between them is small.

[0015] (2) In this utility model, the heat conducted by the semiconductor cooling plate to the heat sink is carried away by the internal cooling fan as it passes through the heat sink, forming a good heat dissipation cycle. This can quickly and effectively dissipate the heat, ensuring that the semiconductor cooling plate can work continuously and stably, and further improving the cooling performance and stability of the food storage box.

[0016] (3) In this utility model, the height difference of the lower extension platform facilitates the folding and storage of the folding panels. The silicone layer not only increases the sealing between the folding panels, preventing cold air leakage and improving the preservation effect, but also acts as a buffer during the folding process, reducing wear between the folding panels. When the food storage box is not in use, folding the first, second, third, and fourth folding panels and the middle partition reduces the space occupied by the food storage box, making it easier to store and greatly improving its portability and practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a foldable dual-temperature zone food storage box according to the present invention from a frontal perspective.

[0018] Figure 2 This is a schematic diagram of the overall structure of a foldable dual-temperature zone food storage box of this utility model from an upward perspective.

[0019] Figure 3 This is a front view of a foldable dual-temperature zone food storage box according to the present invention;

[0020] Figure 4 This is a cross-sectional view at section AA of a foldable dual-temperature zone food storage box according to this utility model.

[0021] Figure 5 This is a top view of a foldable dual-temperature zone food storage box according to the present invention.

[0022] Figure 6 This is a cross-sectional view of the BB section of a foldable dual-temperature zone food storage box according to this utility model.

[0023] Figure 7 This is a schematic diagram of the heat dissipation component of a foldable dual-temperature zone food storage box according to the present invention.

[0024] In the diagram: 1. Main body of the food storage box; 2. Lower extension platform; 3. First folding plate; 4. Second folding plate; 5. Third folding plate; 6. Fourth folding plate; 7. C-shaped fixing strip; 8. Middle partition plate; 9. Vacuum chamber; 10. Top cover; 11. First food storage chamber; 12. Second food storage chamber; 13. Lower equipment chamber; 14. Rectangular slot; 15. Heat dissipation assembly; 16. Fixing metal plate; 17. Cooling fin; 18. Lower bracket; 19. Side extension platform; 20. Semiconductor cooling fin; 21. Fixing horizontal plate; 22. Lower fixing frame; 23. Heat sink; 24. Internal cooling fan; 25. Lower air inlet slot; 26. Support pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figures 1-7 This utility model provides an embodiment of a foldable dual-temperature zone food preservation box, mainly composed of a food preservation box body 1, a lower extension platform 2, a first folding plate 3, a second folding plate 4, a third folding plate 5, a fourth folding plate 6, a C-shaped fixing strip 7, a middle partition plate 8, a vacuum chamber 9, a top cover 10, a first preservation chamber 11, a second preservation chamber 12, a lower equipment chamber 13, a rectangular slot 14, and a heat dissipation assembly 15. Its working principle is as follows: When the semiconductor cooling plate 20 is energized, when direct current passes through the semiconductor cooling plate 20, which is composed of two different semiconductor materials connected in series, heat can be absorbed and released at both ends of the semiconductor cooling plate 20, respectively; the heat in the first preservation chamber 11 and the second preservation chamber 12 is absorbed by the cooling plate 17 and conducted to the heat sink 23 through the other end of the semiconductor cooling plate 20, and the internal cooling fan 24 operates to dissipate heat. The first and second preservation chambers 11 and 12 can preserve different goods, and the refrigeration temperature can be set according to the needs of the goods. Based on the temperature sensed by sensors in the first and second preservation chambers 11 and 12, the current passing through the semiconductor cooling plate 20 is controlled to achieve different operating temperatures. When the refrigerator is not in use, the top cover 10 is removed normally, and the middle partition 8 is pulled out. The first folding plate 3, the second folding plate 4, the third folding plate 5, and the fourth folding plate 6 are folded downwards in sequence. The first folding plate 3 and the second folding plate 4 are stacked, and the third folding plate 5 and the fourth folding plate 6 are placed on both sides of the upper end of the second folding plate 4. The middle partition 8 is placed horizontally on top of the third folding plate 5 and the fourth folding plate 6, and the top cover 10 is used to cover the outside of the folding structure. At this time, the height of the refrigerator is reduced, and it can be stacked.

[0027] (1) Structure of the main body 1 and lower equipment cavity 13 of the food storage box

[0028] The lower end of the main body 1 of the food storage box is divided by a partition to form a lower equipment cavity 13. Heat dissipation components 15 are installed on both sides of the lower equipment cavity 13. Each heat dissipation component 15 includes a fixed metal plate 16, with multiple cooling fins 17 fixed to the upper end of the fixed metal plate 16 from front to back. A rectangular groove is formed on the lower end face of the partition along the area where the cooling fins 17 are located. A lower support 18 is bolted to the lower end of the fixed metal plate 16. Side extension platforms 19 are integrally connected to the upper ends of the lower support 18 on both sides. A semiconductor cooling fin 20 is placed in the rectangular space formed between the fixed metal plate 16, the lower support 18, and the two side extension platforms 19. The circuitry of the semiconductor cooling fin 20 extends rearward through the main body 1 of the food storage box. The semiconductor cooling fin 20 can be stably installed in the lower equipment cavity 13. The cooling fins 17 and the semiconductor cooling fin 20 work together to efficiently conduct heat away from the first and second food storage cavities 11 and 12.

[0029] A fixed horizontal plate 21 is fixed to the lower end of the side extension platform 19. Multiple heat sinks 23 are fixed from front to back in the middle area of ​​the lower end of the fixed horizontal plate 21. A lower fixed frame 22 is bolted to the outer lower end of the fixed horizontal plate 21. An internal cooling fan 24 is installed inside the lower fixed frame 22 along the lower end of the heat sinks 23. Several lower air inlet slots 25 are arrayed on the lower end face of the lower fixed frame 22. The heat conducted from the semiconductor cooling pad 20 to the heat sink 23 is dissipated by the internal cooling fan 24, forming a good heat dissipation cycle. This heat dissipation structure can quickly and effectively dissipate heat, ensuring that the semiconductor cooling pad 20 can operate continuously and stably.

[0030] Rectangular slots 14 are provided on the left and right sides of the lower end face of the food storage box body 1. The lower fixed frame 22 extends downward through the rectangular slots 14, and support pads 26 are provided at the four corners of the lower end of the food storage box body 1. The design of the rectangular slots 14 allows the lower fixed frame 22 to be arranged reasonably without affecting the overall structure of the food storage box body 1. The support pads 26 provide stable support for the food storage box, preventing it from shaking during use, and at the same time, they separate the food storage box body 1 from the placement surface, which is conducive to air circulation and further enhances the heat dissipation effect.

[0031] (2) Lower extension platform 2 and folding plate structure

[0032] The upper perimeter of the main body 1 of the food storage box is integrally connected to a lower extension platform 2. The two side walls of the lower extension platform 2 are at the same height, the rear wall of the lower extension platform 2 is lower than the side walls, and the front wall of the lower extension platform 2 is lower than the rear wall. The height design of the lower extension platform 2 facilitates the folding and storage of the folding panels. The front end, rear end, and left and right sides of the upper end of the lower extension platform 2 are respectively connected to a first folding panel 3, a second folding panel 4, a third folding panel 5, and a fourth folding panel 6 via hinges. The upper surfaces of the first folding panels 3, 4, 5, and 6 are flush. A silicone layer is provided between adjacent first folding panels 3, 4, 5, and 6 and between first folding panels 3, 4, 5, and 6 and the lower extension platform 2. The silicone layer not only increases the sealing between the folding panels, preventing cold air leakage and improving the preservation effect, but also acts as a buffer during folding, reducing wear between the folding panels and extending their service life.

[0033] The intermediate partition 8 is fixed by a C-shaped fixing strip 7 in the middle of the inner end face of the first folding plate 3 and the second folding plate 4. The intermediate partition 8 is inserted into the two C-shaped fixing strips 7. The lower end of the intermediate partition 8 has protrusions at both ends to fill the gap caused by the height difference of the lower extension platform 2 and the height setting of the C-shaped fixing strips 7. The design of the C-shaped fixing strips 7 makes it easy to insert and remove the intermediate partition 8, and facilitates folding and storage. At the same time, the C-shaped fixing strips 7 can provide a stable fixation for the intermediate partition 8, preventing it from shaking during use, ensuring the airtightness between the first preservation chamber 11 and the second preservation chamber 12, and ensuring the independent preservation effect of different temperature zones.

[0034] Vacuum chamber 9 structure: A vacuum chamber 9 is provided inside the first folding plate 3, the second folding plate 4, the third folding plate 5, the fourth folding plate 6, and the intermediate partition plate 8. The vacuum chamber 9 has good heat insulation performance, which can effectively prevent the heat in the first preservation chamber 11 and the second preservation chamber 12 from exchanging heat with the outside, greatly reducing the loss of cold energy.

[0035] The top cover 10 and the structure of the preservation chamber: A top cover 10 is jointly provided on the upper outer ends of the first folding plate 3, the second folding plate 4, the third folding plate 5, the fourth folding plate 6. The space between the main body 1 of the preservation box, the first folding plate 3, the second folding plate 4, the third folding plate 5, the fourth folding plate 6, and the top cover 10 is divided by an intermediate partition plate 8 to form a first preservation chamber 11 and a second preservation chamber 12. The top cover 10 can tightly cover the folding plates and the main body 1 of the preservation box, forming a preservation space and ensuring stable temperature and humidity within the preservation chamber. The design of the first preservation chamber 11 and the second preservation chamber 12 allows users to set different temperatures according to the preservation requirements of different goods, realizing a dual-temperature zone preservation function, greatly improving the applicability and flexibility of the preservation box.

[0036] Sensors are installed in the first and second preservation chambers 11 and 12 respectively to sense the internal temperature and feed it back to the controller, which then controls the current to change the operating temperature of the semiconductor cooling plate 20. Insulation layers are adhered to the inner surfaces of the first folding plate 3, second folding plate 4, third folding plate 5, and fourth folding plate 6, the lower end of the top cover 10, and both sides of the intermediate partition plate 8. A silicone layer is also provided on the inner end surfaces to maintain relative internal sealing. For goods requiring high preservation temperatures, insulated bags can be placed inside the first and second preservation chambers 11 and 12 respectively. The insulated bags themselves can be folded without affecting the folding state of the preservation box.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A foldable dual-temperature zone food storage box, comprising a main body (1), characterized in that: The lower end of the main body (1) of the food storage box is divided by a partition to form a lower equipment cavity (13). Heat dissipation components (15) are installed on both sides of the lower equipment cavity (13). The heat dissipation components (15) include a fixed metal plate (16). Multiple cooling plates (17) are fixed on the upper end of the fixed metal plate (16) from front to back. A rectangular groove is opened on the lower end face of the partition along the area where the cooling plates (17) are located. The lower end of the fixed metal plate (16) is fixed with a lower support (18) by bolts. Side extension platforms (19) are integrally connected on both sides of the upper end of the lower support (18). A semiconductor cooling plate (20) is placed in the rectangular space formed between the fixed metal plate (16), the lower support (18) and the two side extension platforms (19). The circuit of the semiconductor cooling plate (20) extends backward through the main body (1) of the food storage box.

2. The foldable dual-temperature zone food storage box according to claim 1, characterized in that: The lower end of the side extension platform (19) is fixed with a fixed horizontal plate (21). Multiple heat sinks (23) are fixed from front to back in the middle area of ​​the lower end of the fixed horizontal plate (21). The lower end of the fixed horizontal plate (21) is fixed with a lower fixed frame (22) by bolts. An internal heat sink (24) is installed inside the lower fixed frame (22) along the lower end of the heat sink (23). Several lower air inlet slots (25) are arrayed on the lower end face of the lower fixed frame (22).

3. A foldable dual-temperature zone food storage box according to claim 2, characterized in that: The lower end of the main body (1) of the food storage box has rectangular slots (14) on the left and right sides. The lower fixed frame (22) extends downward through the rectangular slots (14) and the four corners of the lower end of the main body (1) of the food storage box are provided with support pads (26).

4. A foldable dual-temperature zone food storage box according to claim 1, characterized in that: The upper surface of the main body (1) of the food storage box is integrally connected to a lower extension platform (2). The two side walls of the lower extension platform (2) are at the same height. The rear wall of the lower extension platform (2) is lower than the side wall height, and the front wall of the lower extension platform (2) is lower than the rear wall height. The front end, rear end and left and right sides of the upper end of the lower extension platform (2) are respectively connected to a first folding plate (3), a second folding plate (4), a third folding plate (5) and a fourth folding plate (6) by hinge rotation. The upper surfaces of the first folding plate (3), the second folding plate (4), the third folding plate (5) and the fourth folding plate (6) are flush. A silicone layer is provided between the adjacent first folding plate (3), the second folding plate (4), the third folding plate (5) and the fourth folding plate (6) and between the first folding plate (3), the second folding plate (4), the third folding plate (5) and the fourth folding plate (6) and the lower extension platform (2).

5. A foldable dual-temperature zone food storage box according to claim 4, characterized in that: A C-shaped fixing strip (7) is fixed in the middle of the inner end face of the first folding plate (3) and the second folding plate (4), and an intermediate partition plate (8) is inserted into the two C-shaped fixing strips (7).

6. A foldable dual-temperature zone food storage box according to claim 5, characterized in that: Vacuum chambers (9) are provided in the first folding plate (3), the second folding plate (4), the third folding plate (5), the fourth folding plate (6) and the intermediate partition plate (8).

7. A foldable dual-temperature zone food storage box according to claim 5, characterized in that: The upper ends of the first folding plate (3), the second folding plate (4), the third folding plate (5) and the fourth folding plate (6) are all provided with a top cover (10). The space between the main body (1), the first folding plate (3), the second folding plate (4), the third folding plate (5), the fourth folding plate (6) and the top cover (10) is divided by an intermediate partition plate (8) to form a first preservation cavity (11) and a second preservation cavity (12).

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