Air guide structure and impact type plate belt or mesh belt quick freezer applying same

Abstract

The application relates to an air guide structure and an impact type plate belt or mesh belt quick freezer applying the same, wherein the air guide structure comprises a plurality of inverted V-shaped air guide members and is arranged below an evaporator and is sequentially and spacedly arranged in parallel along a frozen product conveying direction; each inverted V-shaped air guide member comprises two strip-shaped plates forming an inverted V shape; two strip-shaped plates on two adjacent inverted V-shaped air guide members form a V-shaped air guide channel; the two strip-shaped plates forming the V-shaped air guide channel extend along an air flow conveying direction and gradually narrow to form an air flow nozzle; and the V-shaped air guide channel presents an inverted triangular cross section in a cross section plane parallel to the frozen product conveying direction and the air flow direction. The air flow conveying direction is perpendicular to the frozen product conveying direction. The optimized air guide structure can improve the air speed and air volume when the cold air passes through the air guide port, and can ensure that the cold air uniformly and efficiently blows to the surface of the frozen food, so that the food is quickly and efficiently frozen, and the overall performance of the quick freezer is improved.

Description

Technical Field

[0001] This utility model relates to the field of food quick-freezing technology, and in particular to an air guide structure and an impact-type plate belt or mesh belt quick-freezing machine using the same. Background Technology

[0002] In the food processing industry, impact freezers and mesh belt freezers are key pieces of equipment widely used in the rapid freezing process of various foods. These freezers typically require maintaining a low-temperature environment inside the insulated storage chamber, generally between -35°C and -38°C, to ensure that food can freeze quickly and effectively, thereby preserving its quality and taste. To achieve this goal, the design of freezers requires special attention to the heat exchange efficiency between the cold air and the food to be frozen.

[0003] Traditionally, to improve freezing efficiency, quick-freezing machines often incorporate an air guide structure located between the evaporator's outlet and the food to be frozen. Its main function is to guide and accelerate the cold air blown out of the evaporator, making it more concentrated and faster-moving towards the food surface, thereby promoting heat exchange and speeding up freezing. However, in practical applications, to limit the airflow output pattern, existing air guide structures generally feature a long, narrow slit channel connecting the airflow nozzle, such as the air guide structure disclosed in patent application CN222865338U. This design easily generates vortices at the inlet and / or outlet of the slit channel, leading to reduced air pressure and velocity. To improve overall freezing efficiency, some manufacturers have attempted to compensate for the loss of air velocity and volume by increasing the installed power of the evaporator fan. However, this undoubtedly increases the manufacturing and operating costs of the equipment, hindering the widespread application and long-term economic benefits of quick-freezing machines.

[0004] In summary, existing impact plate and mesh belt freezers have significant technical bottlenecks in their airflow structure design. Specifically, how to effectively reduce airflow resistance, improve freezing efficiency, and lower equipment costs while ensuring sufficient air velocity and volume? Therefore, it is necessary to develop a new airflow structure or improve existing airflow technology to solve these problems and meet the food processing industry's demand for efficient and energy-saving freezers. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides an air guide structure and an impact-type plate belt or mesh belt quick-freezing machine using the same.

[0006] To achieve the above objectives, this application provides an air guiding structure comprising multiple inverted V-shaped air guides. The multiple inverted V-shaped air guides are arranged below the evaporator and are spaced apart and parallel to each other along the frozen product conveying direction. Each inverted V-shaped air guide includes two strip plates forming an inverted V shape. The two strip plates on two adjacent inverted V-shaped air guides form a V-shaped air guiding channel. The two strip plates forming the V-shaped air guiding channel extend along the airflow conveying direction and gradually narrow to form an airflow nozzle. The cross-sectional shape of the V-shaped air guiding channel on a cutting plane that is parallel to both the frozen product conveying direction and the airflow direction is an inverted triangle, wherein the airflow conveying direction is perpendicular to the frozen product conveying direction.

[0007] As a further improvement of this application, the multiple V-shaped air guide channels formed by multiple inverted V-shaped air guides all have the same structure.

[0008] As a further improvement of this application, the multiple V-shaped air guide channels formed by multiple inverted V-shaped air guides have partially identical structures.

[0009] As a further improvement of this application, the width of any one of the airflow nozzles is 5 to 10 mm.

[0010] As a further improvement of this application, the height of any one of the inverted V-shaped air guides or any one of the V-shaped air guide channels is the same.

[0011] As a further improvement of this application, the vertical distance from the top to the bottom airflow nozzle of the inverted V-shaped guide is 60-120 mm.

[0012] As a further improvement of this application, the angle between the tangents of the two strip plates forming the V-shaped air guide channel and the airflow nozzle is 10 to 18°.

[0013] As a further improvement to this application, any one of the strip plates is either straight or arc-shaped.

[0014] As a further improvement of this application, each of the inverted V-shaped guides further includes a connecting portion located at the top of the inverted V-shaped guide for connecting the two strip plates forming the inverted V-shaped guide.

[0015] To achieve the above objectives, this application also provides an impact-type plate and belt or mesh belt quick-freezing machine, which includes the air guiding structure described above.

[0016] The beneficial effects of this application are as follows: This application provides an air guide structure and an impact-type plate belt or mesh belt quick-freezing machine using the same. By optimizing the air guide structure, the wind speed and air volume of cold air when passing through the air guide are increased, while ensuring that the cold air can be blown evenly and efficiently onto the surface of the food to be frozen, thereby achieving rapid and efficient freezing of the food and improving the overall performance of the quick-freezing machine. Attached Figure Description

[0017] Figure 1 This is a partial structural schematic diagram of the impact-type plate and belt or mesh belt quick-freezing machine of this application; Figure 2 This is a schematic diagram of the air guide structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the air guide structure according to another embodiment of this application; Figure 4 This is a schematic diagram of the air guide structure according to another embodiment of this application; Figure 5 This is a schematic diagram of the air guide structure according to another embodiment of this application.

[0018] In the diagram: 1. Air guide structure; 11. Inverted V-shaped air guide; 111. Connecting part; 2. Frozen product conveyor belt; 3. Evaporator; 4. Fan. Detailed Implementation

[0019] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0020] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] This application provides an air guide structure 1, such as Figure 1 As shown, the device includes multiple inverted V-shaped air guides 11, which are arranged below the evaporator and are spaced apart and parallel to each other along the frozen product conveying direction. Each inverted V-shaped air guide 11 includes two strip plates forming an inverted V shape. The two strip plates on two adjacent inverted V-shaped air guides 11 form a V-shaped air guide channel, and the two strip plates forming the V-shaped air guide channel are aligned with the airflow conveying direction (e.g., ...). Figure 1 The airflow direction extends and gradually narrows to form an airflow nozzle. The cross-sectional shape of the V-shaped air guide channel on the cutting plane that is parallel to both the frozen product conveying direction and the airflow direction is an inverted triangle, wherein the airflow conveying direction is perpendicular to the frozen product conveying direction.

[0022] Based on the above technical solution, the two strip plates of the V-shaped air guide channel extend along the airflow direction and gradually narrow to form airflow nozzles. The cross-sectional shape of the V-shaped air guide channel on the cutting plane parallel to both the frozen product conveying direction and the airflow direction is an inverted triangle, without any additional connecting structures, such as the straight guide channel between the V-shaped air guide channel and the trumpet-shaped nozzle disclosed in patent application number CN222865338U. From the perspective of airflow dynamics, eliminating the design of the slender straight guide channel reduces airflow resistance, making the flow of cold air from the V-shaped air guide channel to the nozzle smoother and reducing the wind speed attenuation rate; at the same time, the directly contracted nozzle does not require separate processing and assembly, reducing manufacturing costs. In this solution, the bottom of the channel directly contracts into an airflow nozzle. Although the airflow diffusion range is slightly narrower than that of the trumpet-shaped nozzle, the airflow concentration is higher, improving the local freezing efficiency of small-volume frozen products (such as shrimp and small pieces of meat).

[0023] In an optional implementation, the multiple V-shaped airflow channels formed by multiple inverted V-shaped guide elements all have the same structure, such as... Figure 1-5 As shown, multiple V-shaped air guide channels adopt the same structure, which keeps the airflow resistance and wind speed output of each channel consistent, ensuring the uniform freezing of frozen products; at the same time, the standardized structure facilitates mass production, increases the mold reuse rate, and shortens the production cycle.

[0024] In an optional implementation, multiple V-shaped air guide channels formed by multiple inverted V-shaped guide elements have partially identical structures. Some V-shaped air guide channels have different structures, and the channel size can be adjusted according to the freezing needs of different areas of the frozen food conveyor belt 2 (such as widening the channel near the edge of the conveyor belt) to adapt to multi-category mixed quick-freezing scenarios (such as freezing meat and fruits and vegetables on the same conveyor belt at the same time).

[0025] In an optional implementation, the width (t) of any one of the airflow nozzles is 5-10 mm. Setting the nozzle width to 5-10 mm is similar to the width (5-10 mm) of the straight guide channel disclosed in patent application CN222865338U. However, in this solution, the nozzle is directly formed without a transition, reducing the throttling effect of the airflow at the nozzle and increasing the wind speed under the same fan power. Furthermore, setting the nozzle width to 5-10 mm ensures airflow concentration while avoiding frost clogging problems caused by excessively narrow nozzles (e.g., <5 mm), thus reducing maintenance frequency.

[0026] In optional implementations, the height (h) of any one of the inverted V-shaped guide elements or any one of the V-shaped air guide channels is the same. Specifically, the height of the inverted V-shaped guide element refers to the vertical distance from the top of the inverted V-shaped guide element to the bottom airflow nozzle, and the height of the V-shaped air guide channel refers to the vertical distance from the top of the V-shaped air guide channel to the bottom airflow nozzle. The vertical distance from the top of the inverted V-shaped guide element to the bottom airflow nozzle or the vertical distance from the top of the V-shaped air guide channel to the bottom airflow nozzle is designed to be 60-120mm, which is higher than the height of the V-shaped air guide channel (30-80mm) disclosed in patent application number CN222865338U. This increases the airflow capacity within the channel and, with the fan 4 airflow remaining constant, increases the static pressure of the airflow within the channel, providing a more stable airflow source for the nozzle output. Simultaneously, the higher channel height facilitates the removal of internal frost, shortening the cleaning time. This solution exhibits stronger anti-frost clogging capabilities when handling high-humidity frozen products (such as seafood), eliminating the need for frequent frost clogging removal, facilitating continuous operation, and increasing operating time.

[0027] In an optional implementation, the V-shaped airflow channel is formed by two strip plates located on adjacent inverted V-shaped airflow guides.

[0028] In an optional implementation, the angle (α) between the two strip plates forming the V-shaped air guide channel and the tangents at the airflow nozzle is 10–18°. This angle allows the airflow to diffuse moderately at the nozzle outlet, and combined with the design of the nozzle width and the height of the V-shaped air guide channel, it balances freezing efficiency and coverage.

[0029] In optional embodiments, any one of the strip plates can be straight or arc-shaped. Preferably, when any one of the strip plates is arc-shaped, the convex surface of the arc faces the V-shaped air guide channel. Depending on the shape of the strip plates, different shapes of inverted V-shaped air guides 11 can be formed, thereby forming different air guide structures 1, such as... Figure 2-5 The air guide structure 1 is shown separately.

[0030] In an optional embodiment, each of the inverted V-shaped guide members 11 further includes a connecting portion 111, such as... Figure 2-5 As shown, the connecting part 111 is located at the top of the inverted V-shaped guide 11 and is used to connect the two strip plates forming the inverted V-shaped guide 11. The top connecting part 111 is integrally formed with the two strip plates of the inverted V-shaped guide 11. The design of the top connecting part 111 increases the top area, which facilitates the dispersion of air volume and wind force, improves the structural strength of the inverted V-shaped guide 11, and can withstand greater airflow pressure (such as no deformation when the wind pressure of the fan 4 is increased to 300Pa); at the same time, the top connecting part 111 avoids the displacement of the strip plates caused by vibration, ensuring the stability of the channel size.

[0031] This application also provides an impact-type plate and belt or mesh belt quick-freezing machine, such as Figure 1 As shown, it includes an evaporator 3, a fan 4 connected to the evaporator 3, an air guide structure 1 disposed at the bottom of the evaporator 3, and a frozen product conveyor belt 2 located below the air guide structure 1. The air guide structure 1 is the air guide structure 1 of the impact plate belt or mesh belt quick-freezing machine described above.

[0032] In summary, the air guide structure 1 provided in this application can draw more cold air from the evaporator 3, so that the outer surface of the food to be frozen can obtain a greater wind speed, and the cold air blown out by the evaporator 3 can hit the surface of the food to be frozen at a greater wind speed, so as to fully carry out heat exchange and achieve the purpose of rapid freezing.

[0033] Furthermore, the impact-type plate and belt or mesh belt quick-freezing machine of this application has a fast cooling speed, which can make food quickly pass through the ice crystal formation zone of -5℃ to -1℃. As a result, the ice crystal particles formed are small, which does not cause much damage to the food's tissue and cells, and the food's taste can be well preserved.

[0034] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An air guiding structure, characterized in that, It includes multiple inverted V-shaped air guides, which are arranged below the evaporator and are spaced apart and parallel to each other along the frozen product conveying direction. Each inverted V-shaped air guide includes two strip plates forming an inverted V shape. The two strip plates on two adjacent inverted V-shaped air guides form a V-shaped air guide channel. The two strip plates forming the V-shaped air guide channel extend along the airflow conveying direction and gradually narrow to form an airflow nozzle. The cross-sectional shape of the V-shaped air guide channel on a cutting plane that is parallel to both the frozen product conveying direction and the airflow direction is an inverted triangle, wherein the airflow conveying direction is perpendicular to the frozen product conveying direction.

2. The air guiding structure according to claim 1, characterized in that, The multiple V-shaped air guide channels formed by multiple inverted V-shaped air guides all have the same structure.

3. The air guiding structure according to claim 1, characterized in that, The multiple V-shaped air guide channels formed by multiple inverted V-shaped air guides have partially identical structures.

4. The air guiding structure according to any one of claims 1-3, characterized in that, The width of any one of the airflow nozzles is 5 to 10 mm.

5. The air guiding structure according to claim 4, characterized in that, The height of any one of the inverted V-shaped air guides or any one of the V-shaped air guide channels is the same.

6. The air guiding structure according to claim 5, characterized in that, The vertical distance from the top to the bottom airflow nozzle of the inverted V-shaped guide is 60-120mm.

7. The air guiding structure according to claim 6, characterized in that, The angle between the tangents of the two strip plates forming the V-shaped air guide channel and the airflow nozzle is 10-18°.

8. The air guiding structure according to claim 7, characterized in that, Each of the strips can be either straight or curved.

9. The air guiding structure according to claim 6, characterized in that, Each of the inverted V-shaped guides also includes a connecting portion located at the top of the inverted V-shaped guide for connecting the two strip plates forming the inverted V-shaped guide.

10. An impact-type plate belt or mesh belt quick-freezing machine, characterized in that, The impact-type plate and belt or mesh belt quick-freezing machine includes the air guiding structure described in any one of claims 1-9.

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