A freeze-dried wonton quick-freezing device with gradient ice crystal regulation

Abstract

The present invention discloses a freeze-dried wonton quick-freezing device with gradient ice crystal regulation, which relates to the technical field of food quick-freezing processing. It comprises a quick-freezing chamber, a conveying socket is provided on the top of the quick-freezing chamber, an ultrasonic auxiliary freezing device is provided through the conveying socket and extends to the inside of the quick-freezing chamber, guide holes are symmetrically provided on the sides of the quick-freezing chamber, and the ultrasonic auxiliary freezing device and the guide holes are movably arranged; quick-freezing tubes are symmetrically provided on the sides of the quick-freezing chamber near the bottom. By combining the quick-freezing tube, slow-freezing tube 1 and slow-freezing assembly, gradient freezing of wontons can be achieved. The quick-freezing tube cools down quickly, and the slow-freezing tube 1 and slow-freezing assembly perform slow freezing to varying degrees. This gradient freezing method simulates the natural cooling process, further optimizes the ice crystal formation process, avoids the formation of large ice crystals inside the wontons due to a sudden drop in temperature, and thus improves the quick-freezing quality of the wontons.

Description

Technical Field

[0001] The invention relates to the technical field of food quick-freezing processing, in particular to freeze-dried wonton quick-freezing equipment controlled by gradient ice crystals. Background Art

[0002] In the food processing industry, wontons, a traditional delicacy beloved by consumers, require quick-freezing technology to maintain product quality and extend shelf life. Traditional wonton quick-freezing equipment typically uses a single rapid freezing method, freezing the wontons by directly lowering the temperature. However, this method presents numerous problems in practical applications. During the rapid freezing process, water molecules within the wontons rapidly crystallize, forming large ice crystals. These large ice crystals can damage the wontons' cellular structure, resulting in a poor taste, nutrient loss, and appearance deformation after thawing, seriously impacting product quality and market competitiveness.

[0003] On the other hand, traditional equipment lacks control over the freezing process and the ability to achieve gradient freezing. The inability to flexibly adjust freezing parameters based on the wonton's varying specifications, ingredients, and production process requirements makes it difficult to achieve optimal freezing results. This not only results in low freezing efficiency but also wastes energy. Furthermore, traditional equipment suffers from uneven cold air distribution, resulting in inconsistent cooling across the wonton, causing localized overcooling or inadequate freezing, further impacting the wonton's overall freezing quality. Summary of the Invention

[0004] Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a freeze-dried wonton quick-freezing device with gradient ice crystal regulation, which solves the problems raised in the above background technology.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a freeze-dried wonton quick-freezing device with gradient ice crystal control, comprising a quick-freezing chamber, a delivery socket formed on the top of the quick-freezing chamber, an ultrasonic assisted freezing device extending from the delivery socket to the interior of the quick-freezing chamber, guide holes formed symmetrically on the sides of the quick-freezing chamber, the ultrasonic assisted freezing device being movably arranged with the guide holes;

[0008] The quick freezing chamber has quick freezing tubes symmetrically arranged on the sides near the bottom, a slow freezing tube 1 is arranged between two groups of the quick freezing tubes, a slow freezing assembly is arranged inside the quick freezing chamber, and the slow freezing assembly is arranged above the slow freezing tube 1 in parallel;

[0009] A feed port is provided at one end of the quick-freezing chamber, a freezing cavity is provided in the middle of the quick-freezing chamber, a conveying assembly is provided on the inner side of the freezing cavity, wherein a quick-freezing tube and a slow-freezing tube pass through the conveying assembly, and the slow-freezing assembly is located above the conveying assembly.

[0010] Furthermore, the ultrasonic assisted freezing device includes an ultrasonic probe and a soft board, wherein the ultrasonic probe is equidistantly embedded in the soft board, and the ultrasonic probe is externally connected to a power supply.

[0011] Furthermore, a guide rod is movably provided through the guide hole, an inner end of the guide rod is fixedly connected to the ultrasonic assisted freezing device, and the guide rod is fixedly connected to the slow-freezing assembly.

[0012] Furthermore, the slow-freezing assembly includes two groups of lifting frames, slow-freezing tube 2, a sliding block, and a limiting groove. A square hole is opened on the outside of the quick-freezing chamber, and the two groups of the lifting frames are symmetrically fixedly installed on the inner side of the quick-freezing chamber. The limiting groove is opened on the inner side of the lifting frame, and the sliding block is movably installed on the inner side of the limiting groove. A micro-drive rod is provided at the bottom end of the lifting frame, and the micro-drive rod is provided inside the limiting groove. The slow-freezing tube 2 is fixedly connected to the sliding block.

[0013] Furthermore, the second slow-freezing tube is composed of two groups of parallel air pipes, wherein the two groups of air pipes are connected by a multi-head cold air pipe, wherein one end of the air pipe is in a closed state and a valve is fixedly installed at the other end, wherein an injection assembly is provided on the outside of the multi-head cold air pipe.

[0014] Furthermore, the jet assembly includes a connecting head, an annular movable groove, a rotary nozzle, and a sealing piece. The connecting head is fixedly installed on the outside of the multi-head cold air pipe and is connected to the inside of the multi-head cold air pipe. The annular movable groove is opened on the outside of the connecting head and close to the bottom end. The rotary nozzle is movably sleeved on the inner side of the annular movable groove. The sealing piece is arranged on the inner side of the rotary nozzle, wherein the sealing piece is fitted with the bottom end of the connecting head.

[0015] Furthermore, the jet assembly also includes a fixed seat, a triangular blade, a circular nozzle, a conical nozzle, and a collecting hole. The fixed seat is fixed to the inner wall of the rotary nozzle, the triangular blade is fixedly installed at the bottom end of the fixed seat, the circular nozzle is opened at the bottom end of the rotary nozzle, and the collecting hole is opened on the inner side of the rotary nozzle, wherein the collecting hole is connected to the circular nozzle.

[0016] Furthermore, a guide cone surface is provided on the inner side of the rotating nozzle, and the conical nozzle is provided on the guide cone surface.

[0017] Furthermore, the conveying assembly includes a drive shaft, a mesh pulley, and a metal conveyor mesh belt. The drive shaft is movably installed on the inner side of the quick-freezing chamber, the mesh pulleys are equidistantly arranged on the outer side of the drive shaft, and the metal conveyor mesh belt is sleeved on the outer side of the mesh pulley.

[0018] Furthermore, the quick-freezing pipe and the slow-freezing pipe arranged on the inner side of the bottom of the quick-freezing chamber are both provided with diffusion nozzles.

[0019] Beneficial effects

[0020] The present invention has the following beneficial effects:

[0021] 1. This freeze-dried wonton quick-freezing equipment with gradient ice crystal regulation achieves gradient freezing of wontons through the combination of a quick-freezing tube, slow-freezing tube 1, and slow-freezing assembly. The quick-freezing tube rapidly cools down, while slow-freezing tube 1 and the slow-freezing assembly perform varying degrees of slow freezing. This gradient freezing method simulates the natural cooling process, further optimizing the ice crystal formation process and preventing the formation of large ice crystals inside the wontons due to sudden temperature drops, thereby improving the quick-freezing quality of the wontons. The design of the lifting frame, micro-drive rod, and sliding block in the slow-freezing assembly allows the micro-drive rod to control the movement of the sliding block within the limit slot, thereby precisely adjusting the height of slow-freezing tube 2 and achieving precise control of the slow-freezing zone temperature and freezing time to accommodate wontons of different specifications and requirements.

[0022] 2. The gradient ice crystal controlled freeze-dried wonton quick-freezing equipment uses an ultrasonic assisted freezing device to emit ultrasonic waves through an ultrasonic probe, which uses the cavitation effect of ultrasonic waves to accelerate the movement of water molecules and the formation of ice crystals, shortening the freezing time of the wontons. At the same time, it refines the ice crystal structure and reduces the damage of ice crystals to the wonton cell tissue. At the same time, it cooperates with the centrifugal spiral airflow to form a vortex flow field surrounding the wontons, eliminating dead corners, ensuring that the wontons are better frozen and effectively maintaining the taste, nutrition and appearance quality of the wontons.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of a freeze-dried wonton quick-freezing device with gradient ice crystal regulation according to the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure of part A in the middle;

[0026] Figure 3 It is a side view schematic diagram of the overall structure of the present invention;

[0027] Figure 4 Schematic diagram of some structures in the present invention Figure 1 ;

[0028] Figure 5 Schematic diagram of some structures in the present invention Figure 2 ;

[0029] Figure 6 Schematic diagram of some structures in the present invention Figure 3 ;

[0030] Figure 7 Schematic diagram of the metal conveyor mesh belt and mesh belt pulley and slow freezing pipe 1 and slow freezing pipe 2 structures in the present invention;

[0031] Figure 8 This is a schematic diagram of the two-part structure of the slow-freezing tube of the present invention;

[0032] Figure 9 This is a schematic diagram of the second cross-sectional structure of the slow-freezing tube of the present invention;

[0033] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure of part B in the middle;

[0034] Figure 11 This is a schematic diagram of the connection between the rotary nozzle and the connector structure of the present invention.

[0035] In the figure, 1. quick-freezing chamber; 2. feeding port; 3. driving shaft; 4. quick-freezing tube; 5. slow-freezing tube 1; 6. ultrasonic-assisted freezing device; 7. conveying jack; 8. guide rod; 9. guide hole; 10. lifting frame; 11. slow-freezing tube 2; 12. metal conveyor mesh belt; 13. freezing chamber; 14. multi-head cold air pipe; 15. valve; 16. rotating nozzle; 17. mesh belt pulley; 18. diffusion nozzle; 19. sliding block; 20. limiting groove; 21. soft board; 22. connector; 23. circular nozzle; 24. conical nozzle; 25. guide cone; 26. collecting hole; 27. fixing seat; 28. triangular blade; 29. annular movable groove; 30. sealing sheet DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] See also Figure 1-11 The embodiment of the present invention provides a technical solution: a freeze-dried wonton quick-freezing device with gradient ice crystal control, comprising a quick-freezing chamber 1, a delivery socket 7 being provided on the top of the quick-freezing chamber 1, an ultrasonic auxiliary freezing device 6 being provided inside the quick-freezing chamber 1 through the delivery socket 7, and guide holes 9 being symmetrically provided on the sides of the quick-freezing chamber 1, the ultrasonic auxiliary freezing device 6 being movably arranged with the guide holes 9;

[0039] The quick-freezing tubes 4 are symmetrically arranged on the sides of the quick-freezing chamber 1 near the bottom. A slow-freezing tube 1 5 is arranged between the two groups of quick-freezing tubes 4. A slow-freezing assembly is arranged inside the quick-freezing chamber 1, and the slow-freezing assembly is arranged above the slow-freezing tube 1 5 in parallel.

[0040] A feed port 2 is provided at one end of the quick-freezing chamber 1, a freezing chamber 13 is provided in the middle of the quick-freezing chamber 1, a conveying assembly is provided inside the freezing chamber 13, wherein the quick-freezing pipe 4 and the slow-freezing pipe 5 pass through the conveying assembly, and the slow-freezing assembly is located above the conveying assembly;

[0041] The wontons enter through the feed port 2, and the wontons after quick freezing are discharged through the discharge port at the other end of the freezing chamber.

[0042] By setting a slow-motion component for use with a slow-freezing tube 5, the wontons remaining on the surface of the metal conveyor mesh belt 12 can be freeze-dried.

[0043] When the device is quick-freezing wontons, the freezing chamber 13 needs to be divided into three temperature-controlled areas first, and the installation order from left to right is "quick freezing-slow freezing-quick freezing". The number of quick-freezing tubes 4 is two groups symmetrically arranged about the longitudinal center line of the quick-freezing chamber 1, and the slow-freezing tube 1 5 and the slow-freezing assembly are arranged between the two groups of quick-freezing tubes 4. It should be noted that the quick-freezing tube 4, the slow-freezing tube 1 5 and the slow-freezing assembly are cooled by ultra-low temperature air cooling -50°C strong wind circulation to achieve rapid cooling;

[0044] The slow-freezing components distributed in the slow-freezing area adjust the refrigerant flow through valve 15 to reduce the refrigeration power;

[0045] The effects corresponding to the three temperature control areas are:

[0046] First stage quick freezing:

[0047] Goal: Quickly pass through the ice nucleation zone of -1℃ to -5℃ to form a large number of small ice nuclei and avoid water migration.

[0048] Second stage slow freezing:

[0049] Objective: To reduce the cooling rate by 0.5-1°C / s in the temperature range of -5°C to -15°C, prolong the ice crystal growth time, and promote the merging of small ice crystals into larger particles;

[0050] In the slow freezing stage, 20-40kHz ultrasonic waves are applied to the wontons that have undergone the first stage of quick freezing by cooperating with the ultrasonic auxiliary freezing device 6 to promote the merging of ice crystals and accelerate the formation of large ice crystals.

[0051] The third stage of quick freezing:

[0052] Goal: Rapidly cool down to below -40°C again to fix the ice crystal structure and prevent secondary growth of ice crystals that could damage pores.

[0053] Specifically, the ultrasonic-assisted freezing device 6 includes an ultrasonic probe and a soft board 21. The ultrasonic probe is equidistantly embedded on the soft board 21. The ultrasonic probe is connected to an external power supply and adjusts the sound wave by adjusting the input voltage or current of the ultrasonic generator. Its specific principle will not be repeated here. It can also cooperate with the ultrasonic-assisted freezing device 6 in this device to realize the function. This is common knowledge in the field.

[0054] In this embodiment, an ultrasonic auxiliary freezing device 6 is provided to perform ultrasonic treatment on the quick-frozen wontons, thereby promoting the merging of ice crystals and accelerating the formation of large ice crystals, thereby ensuring that the filling inside the wontons is quickly frozen.

[0055] Specifically, a guide rod 8 is movably provided through the guide hole 9 , an inner end of the guide rod 8 is fixedly connected to the ultrasonic assisted freezing device 6 , and the guide rod 8 is fixedly connected to the slow-freezing assembly.

[0056] In this embodiment, a guide rod 8 is provided inside the guide hole 9 to guide the ultrasonic assisted freezing device 6, wherein one end of the guide rod 8 is fixedly connected to the slow-freezing assembly. When the slow-freezing assembly moves up and down, the ultrasonic assisted freezing device 6 and the guide rod 8 are driven into the interior of the freezing chamber 13, thereby realizing the ultrasonic assisted freezing device 6 to perform acoustic wave processing on the wontons. The specific lifting process of the slow-freezing assembly will be described in detail later.

[0057] Specifically, the slow freezing assembly includes two sets of lifting frames 10, slow freezing tube 2 11, a sliding block 19, and a limiting groove 20. A square hole is opened on the outside of the quick freezing chamber 1, and the two sets of lifting frames 10 are symmetrically fixedly installed on the inner side of the quick freezing chamber 1. The limiting groove 20 is opened on the inner side of the lifting frame 10, and the sliding block 19 is movably installed on the inner side of the limiting groove 20. A micro driving rod is provided at the bottom end of the lifting frame 10, and the micro driving rod is arranged inside the limiting groove 20. The slow freezing tube 2 11 is fixedly connected to the sliding block 19;

[0058] The micro-drive rod arranged inside the limiting groove 20 can be an electric telescopic rod, and its telescopic state is controlled by giving the electric telescopic rod an electrical signal. The output end of the electric telescopic rod is fixedly connected to the bottom end of the sliding block 19. When the electric telescopic rod moves, it will drive the entire slow-freezing assembly to move up and down. When the telescopic rod drives the slow-freezing assembly to move downward, due to the connection between the guide rod 8 and the slow-freezing tube 2 11, the guide rod 8 will move along the direction of the guide hole 9 under the drive of the slow-freezing tube 2 11, thereby realizing the transportation of the ultrasonic assisted freezing device 6. It should be noted that the distance from the slow-moving assembly to the metal conveyor mesh belt 12 can be controlled by the telescopic length of the electric telescopic rod. Since the ultrasonic assisted freezing device 6 is limited by the conveying jack 7, the ultrasonic assisted freezing device 6 entering the freezing chamber 13 is parallel to the inner top of the freezing chamber 13, so that the ultrasonic assisted freezing device 6 is directly opposite to the wontons in the slow-freezing area, thereby promoting the arrangement of ice crystals inside the wontons.

[0059] The slow-freezing pipe 2 11 is composed of two sets of parallel air guide pipes, wherein the two sets of air guide pipes are connected by a multi-head cold air pipe 14, wherein one end of the air guide pipe is closed and the other end is fixedly installed with a valve 15, wherein the outer side of the multi-head cold air pipe 14 is provided with an air injection assembly;

[0060] like Figure 11 As shown, the jet assembly includes a connector 22, an annular movable groove 29, a rotary nozzle 16, and a sealing piece 30. The connector 22 is fixedly mounted on the outside of the multi-head cold air pipe 14 and is connected to the inside of the multi-head cold air pipe 14. The annular movable groove 29 is opened on the outside of the connector 22 and near the bottom end. The rotary nozzle 16 is movably sleeved on the inner side of the annular movable groove 29. The sealing piece 30 is arranged on the inner side of the rotary nozzle 16, wherein the sealing piece 30 is fitted with the bottom end of the connector 22.

[0061] The jet assembly also includes a fixed seat 27, a triangular blade 28, a circular nozzle 23, a conical nozzle 24, and a collecting hole 26. The fixed seat 27 is fixed to the inner wall of the rotary nozzle 16, the triangular blade 28 is fixedly installed at the bottom end of the fixed seat 27, the circular nozzle 23 is opened at the bottom end of the rotary nozzle 16, and the collecting hole 26 is opened on the inner side of the rotary nozzle 16, wherein the collecting hole 26 is connected to the circular nozzle 23, and a guide cone 25 is opened on the inner side of the rotary nozzle 16, and the conical nozzle 24 is opened on the guide cone 25.

[0062] In this embodiment, cold air is input to the air inlet of the valve 15 and then the valve 15 is opened and closed to realize the delivery of cold air. The cold air is delivered through the slow freezing pipe 11, and the cold air branch enters the multi-head cold air pipe 14 and is ejected through the jet assembly to realize slow freezing of the wontons after the first stage of quick freezing.

[0063] like Figure 11 As shown, the cold air delivered by the multi-head cold air pipe 14 is delivered through the connector 22 and discharged through the rotary nozzle 16. When the rotary nozzle 16 delivers the cold air, it sprays the air in a circular equidistant manner along the circular nozzle 23 opened at the bottom of the rotary nozzle 16. Part of the gas is ejected through the conical nozzle 24 to act on the wonton. The rotary nozzle 16 rotates under the action of the internal airflow. Therefore, the cold airflow ejected through the circular nozzle 23 acts on the wonton in a rotating state, thereby ensuring that the cold air blown onto the wonton can provide stable conditions for the formation of ice crystals inside the wonton. Compared with the direct airflow, the direct airflow is prone to cause local overcooling of the wonton surface, such as the edge freezing too quickly, while the central area freezes later due to the large thermal resistance, resulting in uneven distribution of ice crystal sizes. The spiral airflow forms a vortex flow field around the wonton through centrifugal force, eliminating dead corners and ensuring that the wonton is better frozen.

[0064] The generation of spiral airflow is described in detail below. When the cold airflow transported by the multi-head cold air pipe 14 enters the connector 22, the airflow will blow the triangular blades 28. At this time, the triangular blades 28 are subjected to the force of the airflow to generate a self-rotation force. Since the rotating nozzle 16 is movably connected to the annular movable groove 29 on the outside of the connector 22, and the connection is coated with lubricating oil, the rotating nozzle 16 rotates under the action of the triangular blades 28. When the airflow passes through the triangular blades 28, part of the airflow will follow the guide cone 25. The conical surface diffuses to the collecting hole 26. Since the collecting hole 26 is connected to the circular nozzle 23, part of the cold air will be discharged through the circular nozzle 23. Since the rotating nozzle 16 rotates, the cold air discharged through the circular nozzle 23 will rotate, forming a spiral rotating cold air flow acting on the wontons. The multi-head cold air pipe 14 and the rotating nozzle 16 are provided with several groups of circumferentially equidistant arrangements, and part of the cold air will be discharged through the conical nozzle 24. The diffusion radius of the cold air discharged through the conical nozzle 24 is from small to large.

[0065] Specifically, the conveying assembly includes a drive shaft 3, a mesh pulley 17, and a metal conveyor mesh belt 12. The drive shaft 3 is movably mounted on the inner side of the quick-freezing chamber 1, the mesh pulley 17 is equidistantly arranged on the outer side of the drive shaft 3, and the metal conveyor mesh belt 12 is sleeved on the outer side of the mesh pulley 17.

[0066] The driving shaft 3, the quick freezing pipe 4 and the slow freezing pipe 5 arranged on the inner side of the bottom of the quick freezing chamber 1 are all provided with diffusion nozzles 18.

[0067] In this embodiment, a conveying assembly is provided to uniformly convey the wontons to be quick-frozen to the "quick freezing-slow freezing-quick freezing" area for quick freezing. It should be noted that the drive shaft 3 is externally connected to a drive source, which may be a motor. When the drive shaft 3 rotates, the mesh belt pulley 17 is driven to rotate. Since the mesh belt pulley 17 is engaged with the metal conveyor mesh belt 12, when the mesh belt pulley 17 rotates, the metal conveyor mesh belt 12 is driven to rotate, thereby realizing the conveyance of the wontons.

[0068] The quick-freezing tube 4 and the slow-freezing tube 5 arranged on the inner side of the bottom of the quick-freezing chamber 1 adopt the same layout as the slow-freezing assembly, and are both composed of two groups of symmetrical air ducts and a multi-head cold air pipe 14. The only difference is that the diffusion nozzle 18 is opened on the top surface of the multi-head cold air pipe 14, and the air duct is also connected through the valve 15 to control the delivery of cold air. The cold air diffuses in a cone shape through the diffusion nozzle 18 and passes through the metal conveyor mesh belt 12 to cool the wontons remaining on the surface of the metal conveyor mesh belt 12.

[0069] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0070] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A freeze-dried wonton quick-freezing device with gradient ice crystal regulation, comprising a quick-freezing chamber (1), characterized in that: A delivery socket (7) is provided on the top of the quick-freezing chamber (1), and an ultrasonic auxiliary freezing device (6) is provided inside the quick-freezing chamber (1) through the delivery socket (7). Guide holes (9) are symmetrically provided on the sides of the quick-freezing chamber (1), and the ultrasonic auxiliary freezing device (6) and the guide holes (9) are movably arranged. The quick-freezing chamber (1) is symmetrically provided with quick-freezing tubes (4) on the side near the bottom, and a slow-freezing tube (5) is provided between two groups of the quick-freezing tubes (4). A slow-freezing assembly is provided inside the quick-freezing chamber (1), and the slow-freezing assembly is provided above the slow-freezing tube (5) in parallel. A feed port (2) is provided at one end of the quick-freezing chamber (1), a freezing chamber (13) is provided in the middle of the quick-freezing chamber (1), a conveying assembly is provided inside the freezing chamber (13), wherein a quick-freezing tube (4) and a slow-freezing tube (5) pass through the conveying assembly, and the slow-freezing assembly is located above the conveying assembly; A guide rod (8) is movably provided in the guide hole (9), the inner end of the guide rod (8) is fixedly connected to the ultrasonic auxiliary freezing device (6), and the guide rod (8) is fixedly connected to the slow freezing assembly; The slow-freezing assembly includes two groups of lifting frames (10), slow-freezing tube II (11), a sliding block (19), and a limiting groove (20). A square hole is provided on the outside of the quick-freezing chamber (1). The two groups of lifting frames (10) are symmetrically fixedly installed on the inside of the quick-freezing chamber (1). The limiting groove (20) is provided on the inside of the lifting frame (10). The sliding block (19) is movably installed on the inside of the limiting groove (20). A micro-drive rod is provided at the bottom end of the lifting frame (10), and the micro-drive rod is provided inside the limiting groove (20). The slow-freezing tube II (11) is fixedly connected to the sliding block (19).

2. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 1, characterized in that: The ultrasonic assisted freezing device (6) comprises an ultrasonic probe and a soft board (21), wherein the ultrasonic probe is equidistantly embedded in the soft board (21), and the ultrasonic probe is externally connected to a power supply.

3. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 1, characterized in that: The second slow-freezing pipe (11) is composed of two groups of parallel air guide pipes, wherein the two groups of air guide pipes are connected by a multi-head cold air pipe (14), wherein one end of the air guide pipe is in a closed state and a valve (15) is fixedly installed at the other end, wherein an injection assembly is provided on the outside of the multi-head cold air pipe (14).

4. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 3, characterized in that: The jet assembly includes a connector (22), an annular movable groove (29), a rotary nozzle (16), and a sealing piece (30). The connector (22) is fixedly mounted on the outside of the multi-head cold air pipe (14) and is connected to the inside of the multi-head cold air pipe (14). The annular movable groove (29) is opened on the outside of the connector (22) and close to the bottom end. The rotary nozzle (16) is movably sleeved on the inside of the annular movable groove (29). The sealing piece (30) is arranged on the inside of the rotary nozzle (16), wherein the sealing piece (30) is fitted with the bottom end of the connector (22).

5. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 4, characterized in that: The jet assembly further comprises a fixing seat (27), a triangular blade (28), a circular nozzle (23), a conical nozzle (24), and a collecting hole (26), wherein the fixing seat (27) is fixed to the inner side wall of the rotary nozzle (16), the triangular blade (28) is fixedly mounted on the bottom end of the fixing seat (27), the circular nozzle (23) is opened at the bottom end of the rotary nozzle (16), and the collecting hole (26) is opened on the inner side of the rotary nozzle (16), wherein the collecting hole (26) is connected to the circular nozzle (23).

6. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 5, characterized in that: A flow-guiding cone (25) is provided on the inner side of the rotating nozzle (16), and the conical nozzle (24) is provided on the flow-guiding cone (25).

7. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 1, characterized in that: The conveying assembly comprises a driving shaft (3), a mesh belt pulley (17), and a metal conveying mesh belt (12); the driving shaft (3) is movably mounted on the inner side of the quick-freezing chamber (1); the mesh belt pulley (17) is equidistantly arranged on the outer side of the driving shaft (3); and the metal conveying mesh belt (12) is sleeved on the outer side of the mesh belt pulley (17).

8. The freeze-dried wonton quick-freezing device controlled by gradient ice crystals according to claim 1, characterized in that: The quick-freezing tube (4) and slow-freezing tube (5) arranged on the inner side of the bottom of the quick-freezing chamber (1) are both provided with diffusion nozzles (18).

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