Odor barrier for food freezing

By using shelf dividers and multi-stage filtration, the problem of cross-contamination of odors in frozen foods is solved, achieving independent refrigeration and airflow purification, thus improving the storage quality and shelf life of food.

CN224534584UActive Publication Date: 2026-07-21QINGDAO XINJUHANG FOOD TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO XINJUHANG FOOD TECHNOLOGY CO LTD
Filing Date
2025-07-02
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The lack of effective odor isolation measures on existing shelves makes it easy for the odors of different foods to mix during storage, affecting the taste and quality of the food.

Method used

The interior of the shelf is divided into two independent spaces, left and right, by a partition. The shelves are fixed with magnetic plates and have composite filters to absorb odors. The shelf openings are closed with magnetic doors, and airflow is purified by ultra-thin fans and multi-stage filters to form independent cold storage spaces.

Benefits of technology

It effectively reduces cross-contamination of flavors in food, keeps the storage environment fresh, extends the shelf life of food, reduces costs, and ensures food quality and taste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of smell isolating device, disclose a kind of smell isolating device of food freezing, including goods shelf, mid-parting and storage rack, the mid-parting is fixedly connected in the goods shelf inner support middle part, the goods shelf interior is divided into left and right two independent spaces, two groups of the partition frame are respectively fixedly connected in the both sides of mid-parting, two groups of the partition frame are fixedly connected on the inner wall of the two spaces of the goods shelf, and equidistant distribution in the two spaces of the goods shelf, the storage rack of the utility model is favorable to cold air circulation of cold store, the freezing of lower layer food is facilitated, while cold air is circulated to lower layer, composite filter element A carries out adsorption and purification to the smell of upper layer in cold air, keep storage environment fresh, guarantee food quality, prolong food shelf life, zeolite in composite filter element A adsorbs water molecule, reduce activated carbon damp, antibacterial agent inhibits mould growth, composite filter element A can be reused by drying sterilization, realize cyclic use, reduce cost expenditure.
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Description

Technical Field

[0001] This utility model relates to the field of odor-separating devices, and in particular to an odor-separating device for food freezing. Background Technology

[0002] Odor-separating devices for frozen food primarily reduce cross-contamination of odors between different ingredients through physical isolation, odor adsorption, and air filtration. They are suitable for home refrigerators, commercial cold storage facilities, and other similar applications. By using sealed containers, partitioned structures, or independent spaces, they block the diffusion of odor molecules and are suitable for ingredients that are sensitive to odors (such as cooked food and desserts). By properly combining odor-separating devices with food pretreatment (such as absorbing blood from meat and sealing seafood in packaging) and regular cleaning, the problem of cross-contamination of odors in frozen food can be effectively solved, ensuring both food safety and flavor preservation.

[0003] Existing shelves often lack effective odor isolation measures. When storing frozen foods, the odors of different foods on the same shelf can easily mix, leading to cross-contamination of flavors. Furthermore, cold storage gases are flowing gases, and to facilitate food access, the shelves are designed with openings at the front and back, making it impossible to close the shelves individually. This causes the odors of the food to spread in different areas, easily accelerating the formation of off-odors and affecting the taste and quality of the food. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a food freezing odor-proofing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A food freezing odor-proofing device includes a shelf, a middle partition, and a shelf rack. The middle partition is fixedly connected to the middle of the inner support of the shelf, dividing the interior of the shelf into two independent spaces, left and right. Two sets of partition racks are fixedly connected to each side of the middle partition, and the two sets of partition racks are fixedly connected to the inner walls of the two spaces of the shelf and are equidistantly distributed in the two spaces of the shelf. The shelf rack is slidably connected between the two sets of partition racks. Several magnetic plates A are fixedly connected inside the back panel of the shelf, and magnetic plates B are fixedly connected to the back side of the shelf. The magnetic plates A and B are attracted by magnetism. Several ventilation holes are opened through the top and bottom sides of the shelf rack. A square groove is opened through the middle of one side of the shelf rack. A composite filter element A is placed inside the square groove. The composite filter element A is filled with activated carbon, zeolite, and antibacterial agent in a certain proportion. A side plate is provided on one side of the composite filter element A. The side plate is fixedly connected to one side of the shelf rack by bolts and closes the opening of the square groove.

[0007] As a further embodiment of this utility model, a plurality of magnetic clamping slots are provided through one side of the partition plate near the opening of the shelf. The magnetic clamping slots are symmetrically distributed on the partition plate. The top and bottom of each magnetic clamping slot are provided with sliding grooves. A plurality of the sliding grooves are provided through the inner top and inner bottom of the shelf.

[0008] As a further embodiment of this utility model, a magnetic door is provided inside the magnetic clamping groove. A shaft is fixedly connected to the top and bottom of one end of the magnetic door. The shaft rotates and slides inside the sliding groove. The magnetic door is magnetically connected inside the magnetic clamping groove.

[0009] As a further embodiment of this utility model, a plurality of ultra-thin fans are fixedly connected to the top of the outer wall of the shelf, and a composite filter element B is provided at the bottom of the ultra-thin fan. The plurality of composite filter elements B are fixedly connected to the top of the inner wall of the shelf by bolts. A plurality of ventilation slots are provided through the bottom of the shelf, and a plurality of mounting slots are provided through the outer bottom of the shelf.

[0010] As a further embodiment of this utility model, several of the mounting slots are located at the bottom of two spaces of the shelf, the ventilation slots are connected to the mounting slots, a magnetic outer frame is inserted into the mounting slot, a magnetic plate A is provided on the back side of the magnetic outer frame, and the magnetic outer frame includes an exhaust hole and a composite filter element C.

[0011] As a further embodiment of this utility model, the exhaust hole is opened through one side of the magnetic outer frame, the exhaust hole is located at the opening of the mounting groove, the composite filter element C is fixedly connected to the middle of the magnetic outer frame and located inside the mounting groove, and several casters are fixedly installed at the bottom of the shelf.

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

[0013] 1. The partition divides the interior of the shelf into two independent spaces, allowing for the categorized freezing of different types of food. This spatial separation design reduces cross-contamination of odors. The partition provides sliding tracks for the shelves, which are then magnetically secured between the partitions using magnetic plates A and B. This magnetic fixation allows for flexible position adjustments to accommodate different food sizes and facilitates easy removal and placement of the shelves. Ventilation holes at the top and bottom of the shelves promote air circulation in the cold storage, facilitating the freezing of lower-level food. As cold air circulates downwards, composite filter A adsorbs and purifies odors carried from the upper layers, maintaining a fresh storage environment, ensuring food quality, and extending shelf life. Staff can use tools to disassemble the side panels and periodically replace composite filter A. The zeolite in composite filter A adsorbs water molecules, reducing moisture absorption by activated carbon, while antibacterial agents inhibit mold growth. Composite filter A can be reused after drying and sterilization, enabling recycling and reducing costs.

[0014] 2. The staff pulls the magnetic door out of the magnetic clamp slot. The magnetic door moves outward, causing the shaft to slide in the sliding groove. At this time, the magnetic door is perpendicular to the shelf. When the shaft slides to the front end of the sliding groove, the magnetic door is rotated. The shaft drives the magnetic door to rotate 90° to the left, closing the space on the left side of the shelf. The opening of the shelf is equipped with a magnetic structure, which makes the magnetic door close more tightly. This allows cold storage gas to enter from the top of the shelf and exit from the bottom, effectively sealing the internal space of the shelf and preventing the mixing of odors between shelves, which would cause cross-contamination and affect the quality and taste of the food. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a food freezing odor-proof device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of a food freezing odor-proof device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of a shelf for a food freezing odor-proof device proposed in this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the shelf of the food freezing odor-proof device proposed in this utility model;

[0019] Figure 5 This is a schematic diagram showing the disassembled structure of the magnetic door of a food freezing odor-proof device proposed in this utility model.

[0020] In the diagram: 1. Shelf; 101. Magnetic plate A; 102. Ventilation slot; 103. Mounting slot; 104. Sliding slot; 2. Middle partition; 201. Magnetic clamping slot; 3. Divider rack; 4. Storage rack; 401. Ventilation hole; 402. Side panel; 403. Magnetic plate B; 5. Composite filter element A; 501. Activated carbon; 502. Zeolite; 503. Antibacterial agent; 6. Magnetic door; 601. Shaft column; 7. Ultra-thin fan; 701. Composite filter element B; 8. Magnetic outer frame; 801. Exhaust hole; 802. Composite filter element C; 9. Casters. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-5 A food freezing odor-proof device includes a shelf 1, a middle partition 2, and a storage rack 4. The middle partition 2 is fixedly connected to the middle of the inner support of the shelf 1, dividing the interior of the shelf 1 into two independent spaces, left and right. Two sets of divider frames 3 are fixedly connected to each side of the middle partition 2, and the two sets of divider frames 3 are fixedly connected to the inner walls of the two spaces of the shelf 1 and are equidistantly distributed in the two spaces of the shelf 1. The storage rack 4 is slidably connected between the two sets of divider frames 3. Several magnetic plates A101 are fixedly connected inside the back panel of the shelf 1, and the back side of the storage rack 4 is fixedly connected to... A magnetic suction plate B403 is attached, and the magnetic suction plate A101 and the magnetic suction plate B403 are attracted by magnetism. Several ventilation holes 401 are opened through the top and bottom sides of the shelf 4. A square groove is opened through the middle of one side of the shelf 4. A composite filter element A5 is placed inside the square groove. The composite filter element A5 is filled with activated carbon 501, zeolite 502 and antibacterial agent 503 mixed in proportion. A side plate 402 is provided on one side of the composite filter element A5. The side plate 402 is fixed to one side of the shelf 4 by bolts and closes the opening of the square groove.

[0025] In use, the middle partition 2 divides the interior of the shelf 1 into two independent spaces, allowing for the categorized freezing of different types of food, such as lamb and pork. Although both are meats, lamb has a stronger odor, which can easily cause pork to absorb other smells. The space-dividing design reduces this cross-contamination. The divider 3 provides a sliding track for the shelf 4. The shelf 4 is magnetically secured to the divider 3 using magnetic plates A101 and B403. This magnetic fixation allows for flexible position adjustment to accommodate different sizes of food and facilitates easy pulling and retrieval. The shelf 4 has ventilation holes 401 at the top and bottom. It facilitates the circulation of cold air in the cold storage, making it convenient for freezing food on the lower level. As the cold air circulates downwards, the composite filter element A5 adsorbs and purifies the odors carried by the cold air from the upper level, keeping the storage environment fresh, ensuring food quality, and extending the shelf life of food. Staff can use tools to remove the side panel 402 to replace the composite filter element A5 periodically. The zeolite 502 in the composite filter element A5 adsorbs water molecules, reducing the moisture absorption of the activated carbon 501, while the antibacterial agent 503 inhibits mold growth. The composite filter element A5 can be reused after drying and sterilization, achieving recycling and reducing costs.

[0026] In this embodiment, a plurality of magnetic clamping slots 201 are provided through one side of the partition plate 2 near the opening of the shelf 1. The magnetic clamping slots 201 are symmetrically distributed on the partition plate 2. The top and bottom of the magnetic clamping slots 201 are provided with sliding grooves 104. The plurality of sliding grooves 104 are provided through the inner top and inner bottom of the shelf 1.

[0027] In use, the staff pulls the magnetic door 6 out of the magnetic clamping slot 201. The magnetic door 6 moves outward, causing the shaft 601 to slide in the sliding groove 104. At this time, the magnetic door 6 is perpendicular to the shelf 1. When the shaft 601 slides to the front end of the sliding groove 104, the magnetic door 6 is rotated. The shaft 601 drives the magnetic door 6 to rotate 90° to the left (or right), closing the space on the left (or right) side of the shelf 1. The opening of the shelf 1 is equipped with a magnetic structure, making the magnetic door 6 close more tightly. This allows cold storage gas to enter from the top of the shelf 1 and exit from the bottom, effectively sealing the internal space of the shelf 1 and preventing the mixing of odors between the shelves 1, which would cause cross-contamination and affect the quality and taste of the food.

[0028] In this embodiment, a magnetic door 6 is provided inside the magnetic clamping groove 201. A shaft column 601 is fixedly connected to the top and bottom of one end of the magnetic door 6. The shaft column 601 is rotatably and slidably connected inside the sliding groove 104. The magnetic door 6 is magnetically connected to the inside of the magnetic clamping groove 201.

[0029] In use, the magnetic door 6 in the magnetic clamping slot 201 is rotatably and slidably connected to the sliding groove 104 through the two end shafts 601, realizing the opening and closing action. The design of the sliding groove 104 ensures that the magnetic door 6 opens and closes smoothly. When the magnetic door 6 is open and perpendicular to the shelf 1, push the magnetic door 6 into the magnetic clamping slot 201, and position the magnetic door 6 through the magnetic connection. The magnetic clamping slot 201 has a storage function for the open magnetic door 6, so as to avoid the magnetic door 6 occupying a certain area when open and affecting the entry and exit of other shelves 1.

[0030] In this embodiment, a number of ultra-thin fans 7 are fixedly connected to the top of the outer wall of the shelf 1. The bottom of the ultra-thin fans 7 is provided with composite filter cores B701. The composite filter cores B701 are fixedly connected to the top of the shelf 1 by bolts. A number of ventilation slots 102 are opened through the bottom of the shelf 1. A number of installation slots 103 are opened through the bottom of the shelf 1.

[0031] When in use, the ultra-thin fan 7 on the top of the outer wall of the shelf 1 operates to accelerate the flow of cold air. When the cold air passes through the composite filter element B701 below the ultra-thin fan 7, the composite filter element B701 filters the cold air entering the shelf 1. The ventilation groove 102, the installation groove 103 and the exhaust hole 801 on the inner bottom of the shelf 1 cooperate with each other to form a cold air circulation channel, promoting the circulation and purification of cold air.

[0032] In this embodiment, several mounting slots 103 are located at the bottom of two spaces of the shelf 1. Ventilation slots 102 are connected to mounting slots 103. A magnetic outer frame 8 is inserted into the mounting slot 103. A magnetic plate A101 is provided on the back side of the magnetic outer frame 8. The magnetic outer frame 8 includes an exhaust hole 801 and a composite filter element C802.

[0033] During use, the exhaust port 801 runs through one side of the magnetic outer frame 8 to ensure smooth air discharge. The composite filter element C802 is fixed in the middle of the magnetic outer frame 8 and plays a purification role during the air discharge process. The ultra-thin fan 7 installed on the top of the shelf 1 and the low-temperature battery it uses are existing technologies. They are specially designed and selected for the low-temperature environment, humidity conditions, airflow organization and equipment reliability of cold storage. With reasonable selection and intelligent control, the ultra-thin fan 7 can significantly improve the odor purification efficiency in cold storage, and is especially suitable for the partitioned storage of high-odor food.

[0034] In this embodiment, the exhaust port 801 is opened through one side of the magnetic outer frame 8. The exhaust port 801 is located at the opening of the mounting groove 103. The composite filter element C802 is fixedly connected to the middle of the magnetic outer frame 8 and located inside the mounting groove 103. Several casters 9 are fixedly installed at the bottom of the shelf 1.

[0035] When in use, the casters 9 at the bottom of shelf 1 allow the device to move flexibly, making it easy to adjust its position, clean, or transport. The composite filter elements B701, A5, and C802 work together to filter and purify the cold air in three stages: the incoming cold air, the downward-exhausting cold air, and the outgoing cold air. This ensures that odors do not spread to the external environment, keeps the cold air in the entire cold storage fresh, inhibits bacterial growth, and provides a good storage environment for food.

[0036] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: Different types of food, such as strongly odorous mutton and seafood, and mildly odorous pork and vegetables, are placed on the independent shelves 4 in the left and right spaces of the shelf 1, physically separated by the partition 2. The magnetic door 6 is pushed out from the magnetic clamping groove 201 and rotated 90° along the sliding groove 104 to close the opening of the shelf 1. The magnetic structure ensures a seal, forming an independent cold storage space, preventing cross-contamination of odors between the left and right sides. The cold storage refrigeration system is activated, and cold air enters from the top of the shelf 1. The cold air first passes through the ultra-thin fan 7 at the top of the shelf 1. The fan accelerates the airflow downwards. The airflow passes through the composite filter core B701 below the fan. The activated carbon 501 in the filter adsorbs the odors of the cold storage environment (such as odors emitted from other shelves 1) carried in the cold air. The zeolite 502 further removes moisture, and the antibacterial agent 503 inhibits microorganisms in the airflow. The purified cold air enters each layer of space through the ventilation hole 401 at the top of the shelf 4, contacts the food surface, and carries the odors emitted by the food downwards. When the air passes through the ventilation holes 401 on both sides of the shelf 4, the composite filter element A5 performs secondary adsorption of odor molecules in the interlayer circulating airflow. The zeolite 502 continuously absorbs moisture to prevent the activated carbon 501 from becoming ineffective, and the antibacterial agent 503 inhibits mold caused by humidity. The shelf 4 is magnetically fixed by the magnetic suction plate A101 and the magnetic suction plate B403, and the spacing can be flexibly adjusted to ensure that the airflow around food of different heights passes evenly through the filter element. The cold air carrying odors flows into the bottom mounting groove 103 through the ventilation groove 102 at the bottom of the shelf 1, and is exhausted through the magnetic outer frame 8. The airflow exits through hole 801. Before exiting, the airflow must pass through composite filter element C802 to adsorb residual odor molecules again, preventing odors in shelf 1 from spreading to the cold storage public environment. This device achieves full-process control of "interception-adsorption-purification-isolation" of food odors in the cold storage through a synergistic mechanism of physical zoning + three-stage filtration + intelligent airflow circulation. Combined with adjustable shelves 4 and sealed magnetic doors 6, it not only meets the classification and storage needs of different foods, but also maintains a low-odor environment through dynamic purification, significantly improving the quality and storage period of frozen foods.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A food freezing odor-proof device, comprising a shelf (1), a middle partition (2), and a storage rack (4), characterized in that, The partition (2) is fixedly connected to the middle of the inner support of the shelf (1), dividing the interior of the shelf (1) into two independent spaces, left and right. Two sets of partition frames (3) are fixedly connected to both sides of the partition (2). The two sets of partition frames (3) are fixedly connected to the inner walls of the two spaces of the shelf (1) and are equidistantly distributed in the two spaces of the shelf (1). The shelf (4) is slidably connected between the two sets of partition frames (3). Several magnetic plates A (101) are fixedly connected inside the back panel of the shelf (1). (4) A magnetic suction plate B (403) is fixedly connected to the back side. The magnetic suction plate A (101) and the magnetic suction plate B (403) are attracted by magnetism. Several ventilation holes (401) are opened through the top and bottom sides of the shelf (4). A square groove is opened through the middle of one side of the shelf (4). A composite filter core A (5) is placed inside the square groove. A side plate (402) is provided on one side of the composite filter core A (5). The side plate (402) is fixedly connected to one side of the shelf (4) by bolts and closes the opening of the square groove.

2. The food freezing odor-proof device according to claim 1, characterized in that, The partition plate (2) has several magnetic clamping slots (201) through it on one side near the opening of the shelf (1). The magnetic clamping slots (201) are symmetrically distributed on the partition plate (2). The top and bottom of the magnetic clamping slots (201) are provided with sliding grooves (104). Several sliding grooves (104) are through it on the inner top and inner bottom of the shelf (1).

3. The food freezing odor-proof device according to claim 2, characterized in that, The magnetic clamping groove (201) is provided with a magnetic door (6). The top and bottom of one end of the magnetic door (6) are fixedly connected to a shaft (601). The shaft (601) is rotatably and slidably connected inside the sliding groove (104). The magnetic door (6) is magnetically connected inside the magnetic clamping groove (201).

4. The food freezing odor-proof device according to claim 3, characterized in that, A number of ultra-thin fans (7) are fixedly connected to the top of the outer wall of the shelf (1). The bottom of the ultra-thin fans (7) is provided with composite filter element B (701). The composite filter element B (701) is fixedly connected to the top of the shelf (1) by bolts. A number of ventilation slots (102) are opened through the bottom of the shelf (1). A number of installation slots (103) are opened through the bottom of the shelf (1).

5. The food freezing odor-proof device according to claim 4, characterized in that, Several mounting slots (103) are located at the bottom of two spaces of the shelf (1). The ventilation slot (102) is connected to the mounting slot (103). A magnetic frame (8) is inserted inside the mounting slot (103). A magnetic plate A (101) is provided on the back side of the magnetic frame (8). The magnetic frame (8) includes an exhaust hole (801) and a composite filter element C (802).

6. The odor-separating device for food freezing according to claim 5, characterized in that, The exhaust hole (801) is opened through one side of the magnetic outer frame (8). The exhaust hole (801) is located at the opening of the mounting groove (103). The composite filter element C (802) is fixedly connected to the middle of the magnetic outer frame (8) and located inside the mounting groove (103). Several casters (9) are fixedly installed at the bottom of the shelf (1).