EPP (Expanded Polypropylene) heat preservation and preservation box

Abstract

The utility model discloses an EPP heat preservation fresh-keeping box which comprises an outer box body, an inner box body and a top cover, the inner box body is arranged in the outer box body, a cold source area is formed between the lower portion of the bottom of the inner box body and the upper portion of the bottom of the outer box body, at least one cold source partition plate is arranged on the cold source area, and the top cover is arranged on the top cover. A cold source partition plate is arranged in the inner box body and divides a cold source area into at least two cold source sub-areas, at least one area partition plate is arranged in the inner box body and divides the interior of the inner box body into at least two heat preservation and fresh keeping areas, and communicating holes are formed in the upper portions of the cold source sub-areas. And the communicating hole is communicated with the heat preservation and fresh-keeping area. According to the scheme, the temperatures of different areas can be adjusted according to the characteristics of food by separating the areas, so that the freshness of the food is kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal insulation boxes, and in particular relates to an EPP thermal insulation and fresh-keeping box. Background Art

[0002] EPP material has a low thermal conductivity and closed-cell structure, which effectively isolates it from the influence of external temperature, thereby slowing down internal temperature changes. This structure makes EPP insulated packaging boxes excellent at maintaining low or high temperatures, ensuring that the temperature of items remains stable during transportation or storage.

[0003] The Chinese patent with application number 2020219494019 discloses an EPP refrigerated insulation box, which belongs to the field of insulation boxes and solves the technical problems that the existing EPP insulation boxes are not strong enough in structure or are prone to cold bridge phenomenon. The EPP refrigerated insulation box in this solution includes an insulation box body, which is foamed from EPP material. Embedded parts are provided in the EPP insulation layer of the insulation box body. The embedded parts are pre-set in the foaming mold. After the EPP foaming is completed, the embedded parts are located in the formed insulation box body; the embedded parts can improve the strength of the insulation box body or be used to connect accessories of the insulation box body. Since the embedded parts are inside the insulation layer, when the embedded parts are connected to the accessories outside the insulation box, or when the embedded parts are connected to the accessories inside the insulation box, the inside and outside of the insulation box will not be connected, so the insulation effect is better.

[0004] The above patented solution has the effect of improving refrigeration, heat preservation and freshness preservation, but the existing EPP refrigerated insulation box directly puts ice bags into the EPP refrigerated insulation box when refrigerating and insulating the items inside. This method will keep the fruits and vegetables inside at the same refrigeration temperature. Since different fruits and vegetables have different requirements for refrigeration temperature, some fruits and vegetables will be damaged if the temperature is too low, affecting the overall freshness. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an EPP heat-insulating and fresh-keeping box, comprising an outer box body, an inner box body and a top cover, the inner box body being arranged inside the outer box body, and a cold source area being formed between the bottom of the inner box body and the bottom of the outer box body, the cold source area being provided with at least one cold source partitioning plate, the cold source partitioning plate dividing the cold source area into at least two cold source sub-areas, the interior of the inner box body being provided with at least one area partitioning plate, the area partitioning plate dividing the interior of the inner box body into at least two heat-insulating and fresh-keeping areas, a connecting hole being opened above the cold source sub-area, the connecting hole being connected to the heat-insulating and fresh-keeping area.

[0006] Preferably, a partition clamping structure is provided on both sides above the bottom of the inner box body, and the partition clamping structure includes a first triangular plate and a second triangular plate, and a clamping gap is provided between the first triangular plate and the second triangular plate.

[0007] Preferably, a first flange is provided around the upper periphery of the outer box body, a second flange is provided around the upper periphery of the inner box body, a protrusion is provided at the bottom of the second flange, a groove is provided above the first flange, and a buffer rubber pad is provided inside the groove.

[0008] Preferably, a locking device is further included, which includes a first U-shaped elastic member and a second U-shaped elastic member. The two sides of the outer box body are located below the first flange and are respectively provided with a first hinge part and a second hinge part. One end of the first U-shaped elastic member is hinged to the first hinge part, and one end of the second U-shaped elastic member is hinged to the second hinge part.

[0009] Preferably, a transparent observation window is provided in the middle of the top cover.

[0010] The advantages of the utility model are:

[0011] 1. This solution uses cold source dividers to separate the cold source area into multiple sub-zones. Each sub-zone can be equipped with a different number of ice packs or refrigeration elements to control the temperature. This design allows different fruits and vegetables to be placed in corresponding insulation and freshness zones according to their specific refrigeration needs, preventing partial damage to some foods caused by uniform refrigeration temperatures.

[0012] 2. This solution uses a zone divider to separate the interior of the inner cabinet into multiple heat preservation and fresh-keeping zones. Each zone is connected to the corresponding cold source sub-zone via a connecting hole. This design ensures that each heat preservation and fresh-keeping zone maintains an appropriate temperature, thereby improving the overall refrigeration effect.

[0013] 3. The design of the first flange and the second flange in this solution enables the inner box to be stably placed in the outer box, avoiding displacement or tilting of the inner box due to shaking or impact during transportation or storage, thereby ensuring the heat preservation and freshness preservation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional structural diagram of the utility model.

[0015] Figure 2 This is the external structure diagram of the utility model.

[0016] Figure 3 This is the bottom structure diagram of the inner box of the utility model.

[0017] Figure 4This is a structural diagram of the area partition plate of the utility model.

[0018] Figure 5 This is a structural diagram of the assembly of the first flange and the second flange of the utility model.

[0019] In the figure: 1 outer box, 2 inner box, 3 top cover, 4 cold source area, 5 cold source dividing plate, 6 area dividing plate, 7 communicating hole, 8 first triangular plate, 9 second triangular plate, 10 clamping spacer, 11 first flange, 12 second flange, 13 protrusion, 14 groove, 15 buffer rubber pad, 16 first U-shaped elastic member, 17 second U-shaped elastic member, 18 first hinge part, 19 second hinge part, 20 transparent observation window. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolt connection, or gluing connection. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example 1

[0023] like Figure 1-2As shown, an EPP heat preservation and fresh-keeping box includes an outer box body 1, an inner box body 2 and a top cover 3. The outer box body 1, the inner box body 2 and the top cover 3 are all made of EPP material. The inner box body 2 is arranged inside the outer box body 1. A cold source area 4 is formed between the bottom of the inner box body 2 and the top of the bottom of the outer box body. Two cold source partitions 5 are provided on the cold source area 4 to divide the cold source area 4 into three cold source sub-areas. Each sub-area can be placed with a different number of ice bags or refrigeration elements to control the temperature of each cold source sub-area. A corresponding number of area partitions 6 are provided inside the inner box body 2. The area partitions 6 divide the interior of the inner box body 2 into three heat preservation and fresh-keeping areas. The bottom of each heat preservation and fresh-keeping area corresponds to a corresponding cold source sub-area. A connecting hole 7 is provided above the cold source sub-area. The connecting hole 7 is connected to the heat preservation and fresh-keeping area and is used to transport cold air to the heat preservation and fresh-keeping area above. This design allows different fruits and vegetables to be placed in corresponding heat preservation and fresh-keeping areas according to their respective refrigeration needs, avoiding damage to some fruits and vegetables caused by the unified refrigeration temperature. The regional partition plate 6 divides the interior of the inner box body 2 into multiple heat preservation and fresh-keeping areas, and each area is connected to the corresponding cold source sub-area through the connecting hole 7. Such a design ensures that each heat preservation and fresh-keeping area can obtain a suitable temperature, thereby improving the overall refrigeration effect. Through reasonable temperature zoning and regional separation, the heat preservation and fresh-keeping box can accommodate a variety of fruits and vegetables with different needs at the same time, improving the efficiency and flexibility of the EPP heat preservation and fresh-keeping box. The top cover 3 is covered above the outer box body 1 and the inner box body 2, and a transparent observation window 20 is provided in the middle of the top cover 3. The transparent observation window 20 allows the user to directly observe the status of the items in the box without opening the box lid. The transparent observation window 20 can be made of transparent materials such as polycarbonate polyethylene polymethyl methacrylate.

[0024] Combine Figure 3 and Figure 4 , partition clamping structures are provided on both sides above the bottom of the inner box body 2. Each set of partition clamping structures is used to clamp a region dividing plate 6. The partition clamping structure includes a first triangular plate 8 and a second triangular plate 9. A clamping gap 10 is provided between the first triangular plate 8 and the second triangular plate 9, and the two sides of the region dividing plate 6 are placed in the clamping gap 10. The clamping structure composed of the first triangular plate 8 and the second triangular plate 9 can provide stable support to ensure that the region dividing plate 6 will not move or deform easily, thereby maintaining the stability of the division of the internal space. At the same time, the installation and disassembly of the region dividing plate 6 becomes simple and quick. By simply putting in or taking out the partition plate, the user can easily change the configuration of the internal space so that the number of cold source sub-areas can be set according to needs.

[0025] Combine Figure 4A first flange 11 is provided around the upper periphery of the outer box 1, and a second flange 12 is provided around the upper periphery of the inner box 2. A protrusion 13 is provided at the bottom of the second flange 12. A groove 14 is provided above the first flange 11, and a buffer rubber pad 15 is provided inside the groove 14. The design of the first flange 11 and the second flange 12 enables the inner box 2 to be stably placed inside the outer box 1, avoiding displacement or tilting of the inner box 2 due to shaking or impact during transportation or storage, thereby ensuring the heat preservation and freshness preservation effect. The coordinated use of the protrusion 13 and the groove 14, combined with the sealing effect of the buffer rubber pad 15, effectively prevents air convection between the inner and outer boxes 1, further enhancing the heat preservation effect. At the same time, this design also reduces the impact of the external temperature on the internal temperature, ensuring the freshness of fruits and vegetables. The provision of the buffer rubber pad 15 can form a buffer layer between the inner box 2 and the outer box 1, effectively reducing damage to the box due to external impact or vibration, and extending the service life of the insulation box.

[0026] Combine Figure 2 , also includes a locking device, which includes a first U-shaped elastic member 16 and a second U-shaped elastic member 17. The two sides of the outer box body 1 are located below the first flange 11 and are respectively provided with a first hinge part 18 and a second hinge part 19. One end of the first U-shaped elastic member 16 is hinged to the first hinge part 18, and one end of the second U-shaped elastic member 17 is hinged to the second hinge part 19. By rotating the two U-shaped elastic members, the cover plate after the top cover is closed can be fixed. Simply by rotating the two U-shaped elastic members, the cover plate can be easily fixed and unlocked, simplifying the operation steps and improving the efficiency of use. The design of the fixing device makes the thermal insulation and fresh-keeping box safer during transportation or storage. Even in the case of bumps or vibrations, the box lid can remain tightly closed, preventing items from falling or being damaged due to a loose box lid.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An EPP heat preservation and fresh-keeping box, characterized by: The invention comprises an outer box (1), an inner box (2) and a top cover (3), wherein the inner box (2) is arranged inside the outer box (1), a cold source area (4) is formed between the bottom of the inner box (2) and the bottom of the outer box (1), at least one cold source partition plate (5) is provided on the cold source area (4), and the cold source partition plate (5) partitions the cold source area (4) into at least two cold source sub-areas, and at least one area partition plate (6) is provided inside the inner box (2), and the area partition plate (6) partitions the interior of the inner box (2) into at least two heat preservation and fresh-keeping areas, and a connecting hole (7) is provided above the cold source sub-area, and the connecting hole (7) is connected to the heat preservation and fresh-keeping area.

2. The EPP heat preservation and fresh-keeping box according to claim 1, characterized in that: Both sides above the bottom of the inner box (2) are provided with a partition clamping structure, the partition clamping structure comprising a first triangular plate (8) and a second triangular plate (9), and a clamping space (10) is provided between the first triangular plate (8) and the second triangular plate (9).

3. The EPP heat preservation and fresh-keeping box according to claim 2, characterized in that: A first flange (11) is provided around the upper periphery of the outer box body (1), a second flange (12) is provided around the upper periphery of the inner box body (2), a bump (13) is provided at the bottom of the second flange (12), a groove (14) is provided above the first flange (11), and a buffer rubber pad (15) is provided inside the groove (14).

4. The EPP heat preservation and fresh-keeping box according to claim 3, characterized in that: The outer box body (1) further comprises a locking device, wherein the locking device comprises a first U-shaped elastic member (16) and a second U-shaped elastic member (17); a first hinge portion (18) and a second hinge portion (19) are respectively provided on two sides of the outer box body (1) below the first flange (11); one end of the first U-shaped elastic member (16) is hinged to the first hinge portion (18); and one end of the second U-shaped elastic member (17) is hinged to the second hinge portion (19).

5. The EPP heat preservation and fresh-keeping box according to claim 4, characterized in that: A transparent observation window (20) is provided in the middle of the top cover (3).

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