A fluidized bed quick-freezing device with airflow distribution function

Abstract

This application discloses a fluidized bed quick-freezing device with airflow distribution function, comprising: a box body with a freezing channel along its length and multiple shelves for holding items arranged along its height within the freezing channel; a vortex fan fixedly installed on the inner wall of the box body with its outlet axially aligned with the central area of ​​the shelves; and a hemispherical distribution hood with its spherical dome aligned with the central axis of the vortex fan outlet, multiple first distribution holes in the dome area and second distribution holes in the circumferential area of ​​the spherical surface, the second distribution holes having an opening area larger than the first distribution holes; the second distribution holes extending along the meridian of the spherical surface; after the first distribution holes distribute the airflow, the airflow is blown into the freezing channel through the second distribution holes and the second distribution holes respectively. This device, through the ingenious design of the vortex fan and the hemispherical distribution hood, successfully solves the problem of uneven airflow distribution caused by traditional planar guide plates, and can evenly deliver airflow to each shelf in the freezing channel, ensuring that even the upper and bottom shelves receive sufficient airflow, effectively guaranteeing the consistency of the freezing rate of food particles and ensuring the stability of food quality.

Description

Technical Field

[0001] This utility model particularly relates to a fluidized quick-freezing device with airflow distribution function. Background Technology

[0002] Fluidized bed freezing technology is a key technology in the food processing industry. It achieves rapid and uniform freezing by fluidizing food particles at low temperatures. In existing technologies, uneven airflow distribution is a major technical bottleneck affecting the freezing effect. Traditional fluidized bed freezing equipment includes a cabinet with freezing channels. These channels have multiple vertically arranged shelves for holding food. A vortex fan is installed on the inner wall of the cabinet, and a planar guide plate structure is placed between the vortex fan and the shelves. This structure has the following main technical defects:

[0003] First, the conventional planar baffle structure causes uneven airflow distribution across multiple shelves, with excessive airflow in the central area and insufficient airflow in the upper and bottom shelves, resulting in inconsistent freezing rates of food particles and affecting product quality. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a fluidized bed quick-freezing device with airflow distribution function.

[0005] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0006] A fluidized bed quick-freezing device with airflow distribution function includes: a box body, a freezing channel provided along the length of the box body, and multiple shelves for holding items provided along the height of the freezing channel;

[0007] A vortex fan is fixedly installed on the inner side wall of the cabinet with its air outlet axially aligned with the central area of ​​the shelf.

[0008] The flow divider has a hemispherical shell structure, with its dome facing the central axis of the vortex fan outlet. Multiple first distribution holes are provided in the dome area, and second distribution holes are provided in the circumferential area of ​​the sphere. The opening area of ​​the second distribution holes is larger than that of the first distribution holes. The second distribution holes extend along the meridian of the sphere. After the first distribution holes distribute the airflow, the airflow is blown into the refrigeration channel through the second distribution holes.

[0009] Preferably, the first distribution hole has a honeycomb structure.

[0010] Preferably, the inner wall of the honeycomb structure is provided with a hydrophobic coating.

[0011] Preferably, the honeycomb structure has a cross-shaped support frame inside the honeycomb holes, which is used to enhance the structural strength of the honeycomb holes.

[0012] Preferably, a rotary motor is provided on the outside of the housing, and the rotary motor is driven and connected to a vortex fan; the housing is also provided with a protective cover covering the rotary motor.

[0013] Preferably, the protective cover includes four fixing blocks evenly distributed along the circumference of the rotating motor, and adjacent fixing blocks are connected by detachable protective strips, which are fixed to each other by connecting rods.

[0014] The beneficial effects of this utility model are:

[0015] This equipment, through the ingenious design of a vortex fan and a hemispherical diffuser, successfully solves the problem of uneven airflow distribution caused by traditional flat guide plates. It can evenly deliver airflow to each shelf in the freezing channel, ensuring that even the upper and lower shelves are fully exposed to airflow, effectively guaranteeing the consistency of food particle freezing rate and ensuring the stability of food quality. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of the structure of a fluidized bed quick-freezing device with airflow distribution function. Figure 1 ;

[0018] Figure 2 A schematic diagram of the structure of a fluidized bed quick-freezing device with airflow distribution function. Figure 2 ;

[0019] Figure 3 A schematic diagram of the structure of a fluidized bed quick-freezing device with airflow distribution function. Figure 3 ;

[0020] Figure 4 This is a schematic diagram of the installation of the cross support frame inside the honeycomb holes. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0022] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0023] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, soldering, snap-fitting, or embedding to suitably replace it.

[0024] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0025] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0026] like Figure 1-2 As shown, the fluidized bed quick-freezing equipment with airflow distribution function provided by this utility model includes a box body 1. The box body 1 has a freezing channel 2 arranged along its length direction. Multiple shelves 3 are arranged along the height direction in the freezing channel 2 for placing items to be quick-frozen. A vortex fan 4 is fixedly installed on the inner side wall of the box body 1, and its air outlet is axially aligned with the central area 1-1 of the shelf 3.

[0027] like Figure 3 As shown, the distribution hood 5 has a hemispherical shell structure and is installed in front of the air outlet of the vortex fan 4, with its apex directly facing the central axis of the air outlet of the vortex fan 4. Multiple first distribution holes 6 are provided in the apex region of the distribution hood 5, and second distribution holes 7 are provided in the circumferential region of the spherical surface of the distribution hood 5. The opening area of ​​the second distribution holes 7 is larger than that of the first distribution holes 6, and the second distribution holes 7 extend along the meridian direction of the spherical surface. Since the diameter of the first distribution holes 6 is smaller than that of the second distribution holes 7, the airflow from the vortex fan 4 first converges at the first distribution holes 6. After the first distribution holes 6 perform initial distribution of the airflow from the vortex fan 4, a portion of the airflow will flow to the second distribution holes 7. The airflow then flows into the freezing channel 2 through the first distribution holes 6 and the second distribution holes 7 respectively. This design allows the airflow to be blown out of the distribution hood 5 relatively evenly, achieving uniform distribution of airflow within the freezing channel 2. This ensures that items on each shelf receive sufficient and uniform cold air contact, thereby achieving a good fluidized bed quick-freezing effect.

[0028] The first distribution hole 6 adopts a honeycomb structure, which can refine the airflow blown by the vortex fan 4 into numerous uniform small airflows, enhancing the uniformity and stability of the airflow. The inner wall of the honeycomb hole 8 is coated with a hydrophobic coating, such as PTFE, which can effectively prevent ice crystals generated during the quick-freezing process from accumulating inside the honeycomb hole, avoiding pore blockage, and ensuring long-term smooth airflow. At the same time, a cross support frame 9 is also provided inside the honeycomb hole 8 to enhance the structural strength of the honeycomb hole and prevent the honeycomb hole from deforming under the impact of high-speed airflow, thus affecting the uniformity of airflow distribution.

[0029] A rotary motor 10 is mounted on the outside of the housing 1, and is driven by a drive shaft to power the vortex fan 4. The housing 1 also has a protective cover over the rotary motor 10. The protective cover consists of four fixing blocks 12 evenly distributed around the circumference of the rotary motor. Adjacent fixing blocks 12 are connected by detachable protective strips 13, and the protective strips 13 are fixed together by connecting rods 14. This detachable protective cover design effectively protects the rotary motor from interference and damage from the external environment.

[0030] The working principle of this utility model is as follows:

[0031] When items need to be quick-frozen, they are placed on the respective shelves 3. The rotary motor 10 drives the vortex fan 4 to rotate, generating a high-speed airflow. After being blown out through the outlet of the vortex fan 4, the airflow first enters the dome area of ​​the distribution hood 5. Under the action of the first distribution hole 6 (honeycomb structure) of the distribution hood 5, the airflow is evenly distributed into small streams in multiple directions. Subsequently, some of the airflow is further diffused through the second distribution hole 7 in the circumferential area of ​​the spherical surface, and finally evenly blown into the freezing channel 2. Because the opening area of ​​the second distribution hole 7 is larger than that of the first distribution hole 6, and extends along the meridian direction of the spherical surface, the airflow can more extensively cover the upper and lower shelves, forming a uniform airflow field, thereby achieving efficient fluidized quick-freezing of food on each shelf. Simultaneously, the hydrophobic coating inside the honeycomb holes and the cross support frame 9 ensure the unobstructed flow of the airflow channel and structural stability, respectively, while the protective cover protects the normal operation of the rotary motor and the vortex fan, thus improving the overall performance and reliability of the quick-freezing equipment.

[0032] In summary, the fluidized bed quick-freezing equipment with airflow distribution function of this utility model achieves uniform airflow distribution in the freezing channel through a vortex fan, a hemispherical flow divider, and a specially arranged distribution hole structure, thereby improving quick-freezing efficiency and quality, and has good application prospects and practical value.

[0033] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A fluidized quick-freezing apparatus with air flow distribution function, characterized by, include: Box (1), the box (1) is provided with a freezing channel (2) along the length direction, and the freezing channel (2) is provided with multiple shelves (3) for holding items along the height direction; A vortex fan (4) is fixedly installed on the inner side wall of the housing (1) with its air outlet axially aligned with the central area (1-1) of the shelf (3); The flow divider (5) has a hemispherical shell structure, with its dome facing the central axis of the air outlet of the vortex fan (4). Multiple first distribution holes (6) are provided in the dome area, and second distribution holes (7) are provided in the circumferential area of ​​the sphere. The opening area of ​​the second distribution hole (7) is larger than that of the first distribution hole (6). The second distribution hole (7) extends along the meridian of the sphere. After the first distribution hole (6) distributes the airflow, the airflow is blown into the freezing channel (2) through the second distribution hole (7) and the second distribution hole (7).

2. A fluidized quick-freezing apparatus with air flow distribution function according to claim 1, wherein The first distribution hole (6) has a honeycomb structure.

3. A fluidized quick-freezing apparatus with air flow distribution function according to claim 2, characterized in that, The inner wall of the honeycomb structure is provided with a hydrophobic coating.

4. A fluidized quick-freezing apparatus with air flow distribution function according to claim 2, wherein The honeycomb structure has a cross support frame (9) inside the honeycomb holes, which is used to enhance the structural strength of the honeycomb holes.

5. The fluidized quick-freezing apparatus having a gas flow distribution function according to claim 1, wherein A rotary motor (10) is provided on the outside of the housing (1), and the rotary motor (10) is driven and connected to the vortex fan (4); a protective cover covering the rotary motor (10) is also provided on the housing (1).

6. A fluidized quick-freezing apparatus with air flow distribution function according to claim 5, wherein The protective cover includes four fixed blocks (12) evenly distributed around the circumference of the rotary motor (10). Adjacent fixed blocks (12) are connected by detachable protective strips (13), and the protective strips (13) are fixed to each other by connecting rods (14).

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