Fresh-keeping foam box

By designing a containment slot, ventilation holes, and drainage system in the foam box, the problems of frostbite and water accumulation caused by direct contact between ice packs and fresh products are solved, achieving temperature uniformity and a dry environment, thus improving the preservation ability of fresh products.

CN224076154UActive Publication Date: 2026-04-03ZHONGSHAN SHANGFU PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Traditional ice packs are placed haphazardly inside foam boxes, coming into direct contact with fresh produce. This can cause localized temperatures to drop too low, freezing the produce. Furthermore, when the ice packs melt, water accumulates and soaks the fresh produce, affecting its quality and preservation.

Method used

Design a fresh-keeping foam box, including a box body and a lid. The box body has cold source containers in the grooves on both sides, and is equipped with vents, ventilation channels and drainage system to prevent the cold source from directly contacting fresh products. It also has a water-absorbing layer to treat water accumulation and ensure temperature uniformity and a dry environment.

Benefits of technology

It achieves uniform cooling of fresh products to prevent frost damage, effectively handles water accumulation, improves preservation effect and product quality, and ensures the quality of fresh products during transportation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224076154U_ABST
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Abstract

The utility model provides a fresh-keeping type foam box, which belongs to the technical field of foam boxes and comprises a box body and a box cover, the box cover is clamped at the top of the box body, two groups of accommodating grooves are symmetrically formed in two sides of the box body, a plurality of groups of cold source containers are arranged in the accommodating grooves, a plurality of groups of air holes are formed in the inner walls of the accommodating grooves, and end covers are clamped at the opening ends of the accommodating grooves. A first partition plate and a second partition plate are arranged in the box body, the second partition plate is installed on the first partition plate, the first partition plate and the second partition plate are each of a hollow structure and are each provided with a ventilation hole, a storage cavity is formed among the first partition plate, the second partition plate and the inner wall of the box body, a water receiving groove is formed in the bottom of the box body, and a drainage channel is formed in the box body. The containing groove is communicated with the water receiving groove through the drainage channel. According to the device, the containing grooves are formed in the two sides of the box body, and the multiple sets of cold source containers, the matched clamping corners, the matched clamping grooves and the matched heat exchange pieces are arranged in the containing grooves, so that a user can stably and reasonably place the cold source containers, and direct contact between cold sources and fresh products is avoided.
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Description

Technical Field

[0001] This utility model belongs to the field of foam box technology, and more specifically, it relates to a food preservation foam box. Background Technology

[0002] In the field of fresh produce transportation and storage, foam boxes are a commonly used packaging container, widely used for short- and medium-distance transportation and temporary storage of various fresh products to facilitate preservation. To ensure preservation, ice packs are often placed inside the foam boxes. However, traditional ice packs are usually placed haphazardly inside the foam boxes, in direct contact with the fresh products, which can easily lead to localized excessively low temperatures, freezing the products and affecting their quality and taste. Furthermore, melting ice packs create a large amount of stagnant water; without proper drainage, this water can soak the fresh products, accelerating spoilage. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a preservation foam box to solve the technical problem in the prior art where traditional ice packs are usually placed randomly inside the foam box, coming into direct contact with fresh products, which can easily lead to localized low temperatures and freeze the fresh products.

[0004] The purpose and effect of this novel food preservation foam box are achieved through the following specific technical means:

[0005] A food preservation foam box includes a box body and a lid. The lid is secured to the top of the box body. Two sets of receiving slots are symmetrically arranged on both sides of the box body. Each receiving slot contains multiple sets of cold source containers. Multiple sets of ventilation holes are opened on the inner wall of each receiving slot. An end cap is secured to the opening end of each receiving slot. The box body has a first partition and a second partition. The second partition is installed on the first partition. Both the first partition and the second partition are hollow structures and have ventilation holes. A storage cavity is formed between the first partition, the second partition, and the inner wall of the box body. A water receiving trough is provided at the bottom of the box body. A drainage channel is provided inside the box body. The receiving slots are connected to the water receiving trough through the drainage channel.

[0006] According to a preferred embodiment, a filter screen is provided on one side of the vent hole. The filter screen includes a main frame and two sets of first filter layers and second filter layers. The first filter layer is disposed on both sides of the second filter layer. The first filter layer is a non-woven fabric layer, and the second filter layer is an activated carbon layer.

[0007] According to a preferred embodiment, the first partition is provided with a first ventilation channel, and the second partition is provided with a second ventilation channel. The first ventilation channel and the second ventilation channel are respectively connected to the receiving groove.

[0008] According to a preferred embodiment, the box body is provided with a boss, the first partition is located on the boss, the inner wall of the box body is provided with a sliding groove, the second partition is slidably connected to the sliding groove, the first partition is provided with multiple sets of fixing grooves, the second partition is provided with multiple sets of fixing blocks, and the fixing blocks are engaged in the fixing grooves.

[0009] According to a preferred embodiment, an absorbent layer is provided between the water receiving tank and the box body. The absorbent layer is a honeycomb silicone layer. The water receiving tank is provided with a drain outlet, and the drain outlet is provided with a drain valve.

[0010] According to a preferred embodiment, the receiving groove is provided with multiple sets of retaining corners, and the retaining corners are provided with protrusions. The cold source container is provided with multiple sets of retaining slots, and the protrusions are engaged in the retaining slots. The cold source container is provided with multiple sets of heat exchange fins.

[0011] According to a preferred embodiment, a vent valve is provided on the lid, and a sealing strip is provided at the point where the lid and the box body are engaged.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model features receiving slots on both sides of the box, within which multiple sets of cold source containers, along with matching corner brackets, slots, and heat exchange fins, allow users to securely and properly place the cold source containers, preventing direct contact between the cold source and fresh produce. This enhances the device's protective capabilities for fresh produce. After the cold source containers are placed, the user can transfer cold energy through the heat exchange fins, lowering the overall temperature inside the box and distributing it more evenly. This eliminates concerns about fresh produce being damaged by localized low temperatures, improving the device's ability to control temperature uniformity and ensuring the quality and taste of fresh produce.

[0014] 2. When using this device, users can utilize the drainage channels, water collection tank, absorbent layer, and drain valve inside the box to manage the water accumulated from the melting of the cold source container. This prevents fresh produce from being soaked in water, enhancing the device's ability to handle water accumulation. Furthermore, the honeycomb silicone absorbent layer further absorbs excess moisture, maintaining a relatively dry environment inside the box. This reduces spoilage of fresh produce due to moisture, providing a more reliable preservation environment and improving the preservation time and quality of fresh produce. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0017] Figure 3 yes Figure 2 Enlarged view of region a in the middle;

[0018] Figure 4 yes Figure 2 Enlarged view of region b in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of the first ventilation channel of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 11. Cabinet body; 12. Cabinet lid; 13. Receiving slot; 14. Cold source container; 15. Vent hole; 16. End cap; 17. First partition; 18. Second partition; 19. Ventilation hole; 21. Water receiving slot; 22. Drain outlet; 23. Main frame; 24. First filter layer; 25. Second filter layer; 26. First ventilation channel; 27. Second ventilation channel; 28. Boss; 29. ​​Slide groove; 31. Fixing groove; 32. Fixing block; 33. Water absorption layer; 34. Drain valve; 35. Angle clip; 36. Protrusion; 37. Slot; 38. Heat exchange plate; 39. Vent valve; 41. Sealing strip; 42. Drain channel. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0023] Example:

[0024] like Figures 1 to 5As shown, this utility model provides a fresh-keeping foam box, including a box body 11 and a lid 12, with the lid 12 snapped onto the top of the box body 11. The snapping of the lid 12 with the box body 11 provides a sealed space inside the box body 11, reducing the impact of the external environment on the fresh produce inside and maintaining a relatively stable temperature and humidity environment. Two sets of receiving slots 13 are symmetrically arranged on both sides of the box body 11, each containing multiple sets of cold source containers 14. The arrangement of the receiving slots 13 and the cold source containers 14 allows for centralized placement of the cold source, preventing direct contact between the cold source and the fresh produce, thus preventing the produce from freezing due to localized low temperatures. Simultaneously, the cold source containers 14 release cold energy, lowering the temperature inside the box and preserving the fresh produce. Multiple sets of ventilation holes 15 are provided on the inner wall of the receiving slots 13, and end caps 16 are snapped onto the openings of the receiving slots 13. The vent 15 allows for the exchange of cold air within the receiving slot 13 with the air inside the box, achieving a uniform distribution of cooling effect. The end cap 16 facilitates the installation and removal of the cold source container 14 and prevents outside air from entering the receiving slot 13 and affecting the cooling effect of the cold source container 14 when not in use. The box body 11 contains a first partition 17 and a second partition 18, with the second partition 18 mounted on the first partition 17. The first partition 17 and the second partition 18 further divide the internal space of the box, forming storage cavities for the categorized storage of different fresh products and also helping to guide the airflow path within the box. Both the first partition 17 and the second partition 18 are hollow structures and each has a ventilation hole 19, forming storage cavities between the first partition 17, the second partition 18, and the inner wall of the box body 11. The hollow structure and ventilation holes 19 allow cold air to circulate between the first partition 17 and the second partition 18, and enter the storage cavity through the ventilation holes 19, resulting in a more uniform temperature within the storage cavity and improved preservation. A water collection trough 21 is located at the bottom of the cabinet 11, and a drainage channel 42 is provided inside the cabinet 11. The receiving trough 13 is connected to the water collection trough 21 via the drainage channel 42. The water collection trough 21 and drainage channel 42 effectively collect water generated by the melting of the cold source container 14 and guide it to the water collection trough 21, preventing water from soaking fresh products and maintaining a dry environment within the storage cavity.

[0025] like Figure 2 , 3As shown, a filter screen is provided on one side of the vent 15. The filter screen includes a main frame 23 and two sets of first filter layers 24 and second filter layers 25. The first filter layers 24 are located on both sides of the second filter layers 25. The main frame 23 supports the first filter layers 24 and the second filter layers 25, ensuring the stability of the filter screen structure and allowing it to function properly at the vent 15. The first filter layer 24 is a non-woven fabric layer, and the second filter layer 25 is an activated carbon layer. The non-woven fabric layer can initially filter large particles such as dust and impurities from the air, while the activated carbon layer can adsorb odors and harmful gases, thereby purifying the air entering the box and providing a better preservation environment for fresh products.

[0026] like Figure 2 , 5 As shown, a first ventilation channel 26 is provided in the first partition 17, and a second ventilation channel 27 is provided in the second partition 18. The first ventilation channel 26 and the second ventilation channel 27 are respectively connected to the receiving slot 13. Through the arrangement of the first ventilation channel 26 and the second ventilation channel 27, the cold air in the receiving slot 13 can flow more orderly in the first partition 17 and the second partition 18, and further diffuse into the storage cavity, enhancing the air circulation and uniformity of the cooling effect inside the box.

[0027] As shown in Figures 2 and 3, the housing 11 has a boss 28 inside, and the first partition 17 is located on the boss 28. The boss 28 provides stable support for the first partition 17, ensuring its fixed position within the housing and thus guaranteeing the stability of the entire internal structure. The inner wall of the housing 11 has a sliding groove 29, and the second partition 18 is slidably connected to the sliding groove 29. The first partition 17 has multiple sets of fixing grooves 31, and the second partition 18 has multiple sets of fixing blocks 32, which are engaged within the fixing grooves 31. The sliding connection between the sliding groove 29 and the second partition 18, and the engaging of the fixing blocks 32 with the fixing grooves 31, allow for easy installation and removal of the second partition 18.

[0028] A water-absorbing layer 33 is provided between the water receiving tank 21 and the housing 11. The water-absorbing layer 33 is a honeycomb silicone layer. The water receiving tank 21 is provided with a drain outlet 22, and the drain outlet 22 is provided with a drain valve 34. The water-absorbing layer 33 can further absorb any small amount of water that may overflow from the water receiving tank 21, preventing water from leaking into other parts of the housing 11. The drain valve 34 can control the discharge of accumulated water, making it convenient to drain the water in the water receiving tank 21 when needed. The water-absorbing layer 33 can be made of water-absorbing resin.

[0029] The receiving slot 13 is equipped with multiple sets of retaining angles 35, each with a protrusion 36. The cold source container 14 has multiple sets of retaining slots 37, with the protrusions 36 engaging within the slots 37. Through the coordinated arrangement of the retaining angles 35, protrusions 36, and slots 37, the cold source container 14 can be securely fixed within the receiving slot 13, preventing it from shaking, shifting, or even breaking during transportation, thus ensuring stable cooling performance. The cold source container 14 is equipped with multiple sets of heat exchange fins 38. The heat exchange fins 38 increase the contact area between the cold source container 14 and the air, accelerating the transfer of cold energy, improving cooling efficiency, and causing the internal temperature to drop more quickly.

[0030] A vent valve 39 is fitted onto the lid 12, which regulates the air pressure balance inside the box. When temperature changes inside the box cause air to expand or contract, the vent valve 39 allows an appropriate amount of air to enter or exit, preventing excessively high or low air pressure inside the box, which could make the lid 12 difficult to open or damage the structure of the box body 11. A sealing strip 41 is provided at the point where the lid 12 and the box body 11 are fitted together. The sealing strip 41 enhances the airtightness of the box body 11.

[0031] The specific usage and function of this embodiment are as follows:

[0032] When using this food preservation foam box, firstly, the cold source container 14 is securely installed inside the receiving groove 13 by engaging the protrusion 36 on the inner corner 35 of the receiving groove 13 via the slot 37. Because the cold source container 14 is equipped with heat exchange fins 38, it accelerates the transfer of cold air, which enters the box through the vents 15 on the inner wall of the receiving groove 13. Simultaneously, the air is purified by a filter on one side of the vents 15, where a non-woven fabric layer filters large particulate impurities, and an activated carbon layer adsorbs odors and harmful gases.

[0033] The first partition 17 and the second partition 18 inside the housing 11 are installed together by the cooperation of the boss 28, the sliding groove 29, the fixing groove 31, and the fixing block 32 to form a storage cavity. Cold air flows through the first ventilation channel 26 and the second ventilation channel 27 within the partition and enters the storage cavity through the ventilation hole 19, making the temperature inside the storage cavity uniform. When storing fresh products, the storage cavity space can be adjusted by sliding the second partition 18 according to the size and quantity of the products.

[0034] When the cold source container 14 melts and produces water, the water flows through the drain channel 42 to the water collection tank 21. The honeycomb silicone water-absorbing layer 33 between the water collection tank 21 and the box body 11 can prevent water leakage. When needed, the drain valve 34 is opened to drain the water.

[0035] The vent valve 39 installed on the lid 12 can regulate the air pressure inside the box, ensuring air circulation while maintaining air pressure balance. The sealing strip 41 at the junction of the lid 12 and the box body 11 enhances the sealing of the box body 11, reduces the entry of external heat, and maintains a low-temperature environment inside the box, thereby comprehensively protecting the freshness of fresh products during transportation and storage.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A food preservation foam box, comprising a box body (11) and a box lid (12), wherein the box lid (12) is snapped onto the top of the box body (11), characterized in that: The box (11) has two sets of symmetrically arranged receiving slots (13) on both sides. Each receiving slot (13) is provided with multiple sets of cold source containers (14). The inner wall of the receiving slot (13) is provided with multiple sets of ventilation holes (15). The opening end of the receiving slot (13) is fitted with an end cap (16). The box (11) is provided with a first partition (17) and a second partition (18). The second partition (18) is installed on the first partition (17). The first partition (17) and the second partition (18) are both hollow structures and are provided with ventilation holes (19). The first partition (17), the second partition (18) and the inner wall of the box (11) form a storage cavity. The bottom of the box (11) is provided with a water receiving trough (21). The box (11) is provided with a drainage channel (42). The receiving slot (13) is connected to the water receiving trough (21) through the drainage channel (42).

2. The food preservation foam box according to claim 1, characterized in that: A filter screen is provided on one side of the vent (15). The filter screen includes a main frame (23) and two sets of first filter layers (24) and second filter layers (25). The first filter layer (24) is disposed on both sides of the second filter layer (25). The first filter layer (24) is a non-woven fabric layer, and the second filter layer (25) is an activated carbon layer.

3. A food preservation foam box according to claim 2, characterized in that: The first partition (17) is provided with a first ventilation channel (26), and the second partition (18) is provided with a second ventilation channel (27). The first ventilation channel (26) is connected to the second ventilation channel (27) and the receiving groove (13).

4. A food preservation foam box according to claim 3, characterized in that: The box (11) is provided with a boss (28), the first partition (17) is located on the boss (28), the inner wall of the box (11) is provided with a sliding groove (29), the second partition (18) is slidably connected to the sliding groove (29), the first partition (17) is provided with multiple sets of fixing grooves (31), the second partition (18) is provided with multiple sets of fixing blocks (32), and the fixing blocks (32) are engaged in the fixing grooves (31).

5. A food preservation foam box according to claim 4, characterized in that: A water-absorbing layer (33) is provided between the water receiving tank (21) and the box body (11). The water-absorbing layer (33) is a honeycomb silicone layer. A drain outlet (22) is provided on the water receiving tank (21), and a drain valve (34) is provided on the drain outlet (22).

6. A food preservation foam box according to claim 1, characterized in that: The receiving groove (13) is provided with multiple sets of retaining corners (35), and the retaining corners (35) are provided with protrusions (36). The cold source container (14) is provided with multiple sets of retaining slots (37), and the protrusions (36) are engaged in the retaining slots (37). The cold source container (14) is provided with multiple sets of heat exchange plates (38).

7. A food preservation foam box according to claim 1, characterized in that: A vent valve (39) is fitted on the lid (12), and a sealing strip (41) is provided at the fitting point between the lid (12) and the box body (11).