Ice storage micro-freezing fresh-keeping device for ice fresh fish

Abstract

This invention relates to the field of preservation equipment technology, and discloses a fluidized ice storage and micro-freezing preservation device for chilled fish, comprising: a preservation chamber, internally divided into a first independent preservation zone and a second independent preservation zone by a U-shaped partition plate; and a functional core module, detachably plugged into the U-shaped partition plate, which integrates a circulation channel group, including a main circulation channel and a first delivery pump. This invention integrates the circulation channel group, central cooling mechanism, controller, and data interface mechanism into a single pluggable functional core module, and uses a normally closed self-sealing connector and an electromagnetic control mechanism, allowing the functional core module to be quickly inserted into or removed from the preservation chamber without stopping the system or causing leaks. The removed module can be independently recharged, maintained, or replaced in different locations, significantly improving the device's usability and maintenance convenience, and is particularly suitable for scenarios requiring continuous preservation, such as fishing boats and field operations.

Description

Technical Field

[0001] This invention relates to the field of preservation equipment technology, specifically to a fluidized ice storage and micro-freezing preservation device for chilled fish. Background Technology

[0002] Traditional fluidized ice preservation systems typically employ a fixed, integrated structure. The ice-making unit, circulating pump, heat exchanger, ice storage tank, and control system are all permanently installed within a large cabinet or ship's hold. The components are connected by welding or threaded pipes, forming an inseparable whole. During operation, the fixed ice-making system generates fluidized ice, which is transported to the preservation area through fixed pipes to cool and preserve fresh fish or fruits and vegetables.

[0003] This fixed structure has a core drawback in practical applications: it cannot achieve modular hot-swappable and independent maintenance of core functions. Because all functional components are rigidly connected and non-removable, if critical components such as the circulation pump, controller, or cold storage module malfunction, the entire unit must be stopped and disassembled for repair, interrupting the preservation process. This is especially problematic in scenarios requiring continuous preservation, such as deep-sea fishing vessels or remote production areas, where downtime for maintenance can cause significant spoilage of catches or produce due to delayed preservation. Furthermore, the fixed structure limits the use of electricity for ice making to its installation location. It cannot utilize off-peak electricity rates at night to pre-charge the cold storage module and then move it to locations with limited or no power (such as fishing vessels, temporary sales points, or fields) for independent operation. It also does not support the rapid replacement of depleted modules with pre-charged backup modules to restore operation. In addition, the internal flow channels of the fixed unit are difficult to disassemble and clean, leading to the accumulation of microorganisms in hard-to-reach areas after prolonged use, affecting food hygiene. Therefore, traditional stationary fluidized ice preservation devices are severely limited in terms of reliability, flexibility, and continuous operation due to the lack of modular hot-swappable design. Summary of the Invention

[0004] The purpose of this invention is to provide a fluidized ice storage and micro-freezing preservation device for chilled fish, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fluidized ice storage and micro-freezing preservation device for chilled fish, comprising: The cold storage compartment is internally divided into a first independent cold storage area and a second independent cold storage area by a U-shaped partition. The core functional module is detachably plugged into the U-shaped insulating plate, and it integrates the following: The circulation channel group includes a main circulation channel and a first delivery pump. The two ends of the main circulation channel extend to the side wall of the functional core module and are provided with a first connector. The central cooling mechanism is located inside the core functional module and is used to cool the fluidized ice flowing through the main circulation channel. The controller is installed on the core functional module and is electrically connected to the first delivery pump and the central cooling mechanism. A data interface mechanism is located between the core functional module and the preservation chamber, and is electrically connected to the controller. It is used to transmit the status information of the core functional module to the preservation chamber and to receive external commands. The U-shaped insulating plate is provided with a second pair of connectors corresponding to the first pair of connectors. Both the first pair of connectors and the second pair of connectors are normally closed self-sealing connectors. The core functional module is configured as follows: When inserted into place, the first pair of connectors and the second pair of connectors become conductive to form a loop; The controller automatically configures operating parameters based on the module identity information stored internally. The controller starts the first delivery pump to drive the fluidized ice circulation, and the central cooling mechanism continuously replenishes the cooling. When pulled out, the first pair of connectors and the second pair of connectors automatically return to their normally closed state, and the core functional module can be maintained independently or cooled in a different location.

[0006] According to the above technical solution, it also includes a sensor array: The sensor group is electrically connected to the controller, including: An insertion sensor is installed on the preservation compartment or the U-shaped partition plate to detect whether the core functional module is inserted in place. Temperature sensors are installed in the first independent preservation zone and the second independent preservation zone to detect the temperature of the preservation zone. A flow sensor is installed on the main circulation channel to detect the circulation flow rate of fluidized ice; A pressure sensor is installed on the main circulation channel to detect the circulation pressure; A liquid level sensor is installed in the central cooling chamber to detect the liquid level or state of the phase change cold storage medium. The flow sensor, pressure sensor, and level sensor are directly electrically connected to the controller; the insertion position sensor is electrically connected to the controller directly or through the data docking mechanism, depending on its installation position; and the temperature sensor is electrically connected to the controller through the data docking mechanism.

[0007] According to the above technical solution, a first movable sealing cover and a second movable sealing cover are respectively movably installed on the top of the first independent preservation area and the second independent preservation area, and the first movable sealing cover and the second movable sealing cover open and close independently. The lower part of the side wall of the first independent preservation zone is provided with a first fluidized ice inlet and a first fluidized ice outlet, and the lower part of the side wall of the second independent preservation zone is provided with a second fluidized ice inlet and a second fluidized ice outlet. The first fluidized ice inlet, the first fluidized ice outlet, the second fluidized ice inlet, and the second fluidized ice outlet are all equipped with removable sealing plugs.

[0008] According to the above technical solution, the functional core module includes a longitudinally extending plate-shaped body, the shape of which matches the inner contour of the U-shaped partition plate. The main circulation channel includes at least one main pipe that runs longitudinally through the interior of the side wall of the plate-shaped body. The upper end of the main pipe opens at the top side of the plate-shaped body and is fixedly installed with the first connector. The lower end of the main pipe opens at the bottom side of the plate-shaped body and is fixedly installed with another first connector. The main pipe is located in an independent preservation area facing one side of the plate-shaped body and is used to drive fluidized ice to circulate in the independent preservation area on that side. The first delivery pump is fixedly installed inside the plate-shaped body and located on the path of the main pipeline; The main circulation channel also includes a secondary pipe. The starting end of the secondary pipe is connected to the starting circulation end of the main pipe through a three-way valve and is located before the central cooling mechanism. The secondary pipe does not pass through the central cooling mechanism, and its end is reconnected to the vicinity of the starting end of the main pipe and is located before the central cooling mechanism, so that the fluidized ice flowing back from the secondary pipe merges with the fluidized ice in the main pipe and enters the central cooling mechanism together for cooling. The secondary pipe is enclosed inside the plate-shaped main body and extends to an independent preservation area on the other side. The pipe wall of this section is made of a thermally conductive metal material, which allows the fluidized ice in the secondary pipe to radiate cold energy to the corresponding preservation area through the pipe wall, thereby maintaining a low temperature. The U-shaped insulating plate includes a horizontally arranged base plate and side plates extending upward from both sides of the base plate. The second pair of connectors is fixedly installed at the top and bottom of the side plates corresponding to the positions of the first pair of connectors.

[0009] According to the above technical solution, the central cooling mechanism includes: The central cooling chamber is fixedly installed in the center of the plate-shaped main body of the functional core module. The central cooling chamber is a closed hollow cavity, and a heat insulation layer is formed between its inner wall and the outer wall of the plate-shaped main body. A phase change cold storage medium is encapsulated within the internal space of the central cooling chamber; Wherein, when the main circulation channel passes through the functional core module, at least one section of the main pipe is arranged in the form of a spiral coil or a serpentine coil inside the central cooling chamber, and the wall of this section of the main pipe is made of a thermally conductive metal material, so that the fluidized ice flowing in the main pipe and the phase change cold storage medium in the central cooling chamber can exchange heat through the pipe wall.

[0010] According to the above technical solution, the central cooling mechanism further includes: A circulating heat exchange tube is fixedly installed on the outer wall of the preservation chamber. One end of the circulating heat exchange tube extends to the top of the preservation chamber and is fixedly installed with a third connector. The other end of the circulating heat exchange tube extends to the bottom of the preservation chamber and is fixedly installed with another third connector. The second delivery pump is installed on the pipeline of the circulating heat exchange tube and is electrically connected to the controller; The outer wall of the plate-shaped main body is provided with a fourth connector corresponding to the position of the third connector, and the fourth connector is connected to the central cooling chamber through an internal conveying pipe. The refrigeration unit is fixedly installed on the outer wall of the preservation compartment, located on the pipeline of the circulating heat exchange tube, and electrically connected to the controller; Both the third connector and the fourth connector are normally closed self-sealing connectors, and their structures are compatible with each other. When the core functional module is inserted into the U-shaped insulating plate, the third connector connects and conducts with the corresponding fourth connector, and the controller controls the second delivery pump and the chiller to start, so as to provide external cooling for the phase change cold storage medium.

[0011] According to the above technical solution, the first pair of connectors and the fourth connector have the same first connector structure and are both fixedly installed on the functional core module. The second pair of connectors and the third connector have the same second connector structure and are respectively fixedly installed on the U-shaped partition plate and the preservation chamber body; The first connector structure includes: The first fixing head is fixedly embedded in the side wall of the functional core module, and a first flow hole is opened through its center along the axial direction. The second fixing head is coaxially spaced from the first fixing head, and the two are fixedly connected by at least two circumferentially distributed first connecting rods; the second fixing head has at least two fifth flow holes in its circumferential direction. The first movable head is coaxially and movably sleeved between the first fixed head and the second fixed head. At least two second flow holes are evenly distributed on its circumferential sidewall. The second flow holes are offset from the first flow holes in the axial direction and are corresponding to the fifth flow hole. The first telescopic spring is sleeved on the first connecting rod or evenly distributed circumferentially between the second fixed head and the first movable head. When the first telescopic spring is in a compressed state, its elastic force forces the first movable head to press against the end face of the first fixed head to close the first flow hole. The second connector structure includes: The third fixing head is fixedly embedded in the side wall of the U-shaped partition plate or the preservation chamber, and a third flow hole is opened through its center along the axial direction. The second movable head is located on the side of the third fixed head facing the first connector structure. At least two second connecting rods are evenly distributed circumferentially on the side of the second movable head facing the third fixed head. The second connecting rods extend into the movable cavity opened in the side wall of the third fixed head and are fixedly connected to a movable block. The movable block and the movable cavity are in a sliding sealing fit. The second telescopic spring is installed in the movable cavity, with one end abutting against the bottom wall of the movable cavity and the other end abutting against the movable block. The second telescopic spring is in a stretched state, and its elastic force forces the second movable head to move toward the third fixed head and close the third flow hole. The end face of the second movable head is provided with a fourth flow hole in the circumferential direction, which corresponds to the position of the second flow hole; Both the first connector structure and the second connector structure are equipped with an electromagnetic control mechanism. The electromagnetic control mechanism is electrically connected to the controller and is used to generate electromagnetic force when the functional core module is inserted, attracting the first movable head to move towards the second fixed head, so that the second flow hole is aligned with the fifth flow hole. At the same time, it attracts the second movable head away from the third fixed head, so that the fourth flow hole is aligned with the third flow hole, thereby forming a conductive flow channel.

[0012] According to the above technical solution, the electromagnetic control mechanism includes a first electromagnetic control mechanism and a second electromagnetic control mechanism with the same structure; The first electromagnetic control mechanism is disposed between the first connector and the second connector, and the second electromagnetic control mechanism is disposed between the third connector and the fourth connector; The first electromagnetic control mechanism includes: An electromagnet is embedded inside the second fixing head of the first connector structure and is electrically connected to the controller. The first adsorption magnet is embedded in the first movable head of the first connector structure and is arranged correspondingly to the electromagnet. The second adsorption magnet is embedded in the second movable head of the second connector structure and is set in a corresponding manner to the electromagnet. When the controller issues a docking command, the electromagnet is energized, attracting the first and second adsorption magnets, causing the first and second movable heads to approach and remain close to each other, thus helping to maintain the conductivity of the flow channel.

[0013] According to the above technical solution, the data docking mechanism includes: The first data interface is fixedly installed on the bottom end face of the functional core module. The first data interface includes at least one set of spring pin connectors, and the pins of the spring pin connectors protrude from the mounting surface. The second data interface is fixedly installed at the corresponding position of the U-shaped isolation plate. The second data interface includes contact pads that correspond one-to-one with the spring pin connectors. The module identification code memory is fixedly installed inside the functional core module and is a non-volatile memory. The module identification code memory is electrically connected to the first data interface and stores the unique identification code, model parameters and cold storage status data of the functional core module. A compartment identification code storage device is fixedly installed inside the fresh-keeping compartment and electrically connected to the second data interface. It stores the unique identification code, model parameters and sensor configuration information of the fresh-keeping compartment. The temperature sensor is electrically connected to the second data interface, and the temperature signal detected by the temperature sensor is transmitted to the controller through the second data interface and the first data interface. When the core functional module is inserted into place, the pin of the spring pin connector makes elastic contact with the corresponding contact pad and conducts a connection. The controller reads the data in the module identification code memory and the chamber identification code memory simultaneously through the data docking mechanism, and receives the temperature signal from the temperature sensor. The controller automatically configures the rotation speed of the first delivery pump, the target temperature of the central cooling mechanism, and the operating mode based on the unique identification code of the core functional module, the unique identification code of the preservation compartment, and the detection signal of the temperature sensor.

[0014] According to the above technical solution, a flow slowing mechanism is provided in the first independent preservation zone and the second independent preservation zone respectively; The flow control mechanism includes: At least one flow-limiting plate, wherein the flow-limiting plate is a rectangular flat plate with multiple flow ports that penetrate the thickness of the plate evenly on it, and the diameter of the flow ports is within a preset diameter range; Limiting blocks are fixedly installed on the left and right edges of the flow-limiting plate, with at least two on each side; The limiting slots are longitudinally formed on the inner sidewalls of the first independent preservation area and the second independent preservation area. There are multiple limiting slots arranged at equal intervals in the vertical direction, and the opening shape of each limiting slot matches the shape of the limiting block. The slow-flow limiting plate is inserted into the limiting slots of different heights by the limiting block, and is placed horizontally in the preservation area in a detachable manner, dividing the preservation area into multiple independent small compartments. The height of the small compartments can be adjusted by selecting the limiting slots of different heights. The surface of the slow-flow limiting plate is covered with a food-grade silicone buffer layer.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) Modular hot-swappable design enables plug-and-play functionality and independent maintenance. By integrating the circulation channel assembly, central cooling mechanism, controller, and data interface mechanism into a single pluggable core module, coupled with a normally closed self-sealing connector and electromagnetic control mechanism, the core module can be quickly inserted into or removed from the preservation compartment without shutting down the system or causing leaks. The removed module can be independently recharged, maintained, or replaced in a different location, achieving a "battery-changing" operation mode. This significantly improves the availability and maintenance convenience of the device, making it particularly suitable for scenarios requiring continuous preservation, such as fishing boats and field operations.

[0016] (2) Adaptive intelligent control improves preservation effect and energy efficiency The controller automatically reads the identification codes of the core functional modules and the preservation chamber through a data interface mechanism. Combined with real-time detection signals from temperature, flow, pressure, and level sensors, it can automatically identify the current module model, chamber specifications, and material type. Based on this, it automatically configures the speed of the first delivery pump, the target temperature of the central cooling mechanism, and the operating mode. This intelligent identification and parameter self-adaptation function avoids human error and ensures the device always operates in an optimized state, improving preservation efficiency while reducing energy consumption.

[0017] (3) Independent circulation in zones and slow-flow anti-collision to protect different materials The refrigeration compartment is divided into two independent refrigeration zones by a U-shaped partition, each with independently controllable fluidized ice circulation. For seafood requiring rapid cooling, dynamic circulation can be activated; for delicate fruits and vegetables, circulation can be shut off or only the radiant cooling from the secondary pipes can be utilized to prevent direct scouring by the fluidized ice and potential mechanical damage. Simultaneously, the flow-regulating mechanisms (flow-regulating and limiting plates with flow outlets, and food-grade silicone buffer layers) within each refrigeration zone further reduce the fluidized ice flow rate and separate the materials into independent compartments, effectively preventing collisions and compression, making it particularly suitable for high-value seafood and fruits and vegetables with fragile skins.

[0018] (4) Waste heat is utilized in stages to achieve dual-temperature energy-saving operation of a single unit. By installing a three-way valve and a secondary pipe at the beginning of the main circulation channel, some of the fluidized ice that has not yet been deeply cooled is diverted to the other side of the preservation zone. The fluidized ice then radiates cold energy through its pipe walls to this zone, maintaining a higher temperature for refrigeration (in the fruit and vegetable section). The remaining ice then flows back and merges with the fluidized ice in the main pipe before entering the central cooling system for unified cooling. This design utilizes the "residual cooling" from the seafood section to cool the fruit and vegetable section, eliminating the need to start an additional refrigeration unit and significantly reducing overall energy consumption. It is particularly suitable for mixed preservation scenarios where seafood is placed on one side and fruits and vegetables on the other, achieving energy savings of over 20%.

[0019] (5) A safe and reliable hot-swappable connection system to prevent leakage. The first and second connectors, as well as the third and fourth connectors, all employ a normally closed self-sealing joint structure, integrating an electromagnetic control mechanism. When not inserted, spring force closes the flow channel with the movable head; upon insertion, the controller first completes data docking and identification, then energizes the electromagnet, actively attracting the movable head to move and open the flow channel; before removal, power is de-energized, and the spring automatically resets to close. Throughout the entire process, fluidized ice does not leak, ensuring operator safety and equipment cleanliness. Simultaneously, the data docking mechanism uses spring-loaded pin connectors and contact gaskets, ensuring long insertion and removal life and reliable contact.

[0020] (6) Dual protection of cold storage and external cooling, adaptable to various power supply conditions The central cooling chamber contains a phase change cold storage medium, which can store cold in advance via a refrigeration unit when electricity prices are low or power is abundant (such as at night). During peak electricity demand or when power supply is limited, the phase change cold storage medium melts and releases cold energy to maintain the low temperature of fluidized ice, achieving "peak shaving and valley filling" to reduce operating costs. When the cold storage capacity is insufficient, the external circulating heat exchange pipes and the second transfer pump can be automatically activated, and the refrigeration unit will provide forced cooling to the phase change cold storage medium, ensuring stability for long-term continuous operation. This dual cold source design allows the device to be used in land-based cold storage with a stable power grid, as well as in fishing boats or temporary exhibition points with fluctuating power. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a first perspective view of the present invention; Figure 2 This is a second perspective view of the present invention; Figure 3 This is a first partial three-dimensional schematic diagram of the present invention; Figure 4 This is a second partial perspective view of the present invention; Figure 5 This is a third partial perspective view of the present invention; Figure 6 This is a fourth partial perspective view of the present invention; Figure 7 This is a fifth partial perspective view of the present invention; Figure 8 This is a sixth partial perspective view of the present invention; Figure 9 This is a third-dimensional schematic diagram of the seventh part of the present invention; Figure 10 This is the eighth partial perspective view of the present invention; Figure 11 This is a third-dimensional schematic diagram of the ninth part of the present invention; Figure 12 This is a three-dimensional schematic diagram of the tenth part of the present invention; Figure 13 This is the eleventh partial perspective view of the present invention; Figure 14 This is a first partial three-dimensional schematic diagram of the electromagnetic control mechanism of the present invention; Figure 15 This is a second partial three-dimensional schematic diagram of the electromagnetic control mechanism of the present invention; In the diagram: 1-Preservation compartment body, 11-U-shaped partition plate, 111-Second connector, 112-Bottom plate, 113-Side plate, 12-First independent preservation zone, 121-First movable sealing cover, 122-First fluidized ice inlet, 123-First fluidized ice outlet, 13-Second independent preservation zone, 131-Second movable sealing cover, 132-Second fluidized ice inlet, 133-Second fluidized ice outlet, 14-Removable sealing plug, 2-Functional core module, 21-Circulation channel group, 211-Main Circulating flow channel, 2111-Main pipe, 2112-Secondary pipe, 212-First transfer pump, 213-First connector, 22-Central cooling mechanism, 221-Central cooling chamber, 222-Phase change cold storage medium, 223-Circulating heat exchange tube, 224-Third connector, 225-Second transfer pump, 226-Fourth connector, 227-Refrigeration unit, 23-Plate body, 3-Controller, 31-Installation position sensor, 32-Temperature sensor, 33-Flow sensor, 34-Pressure sensor 35-Level sensor, 4-Data docking mechanism, 41-First data interface, 411-Spring pin connector, 42-Second data interface, 421-Contact gasket, 43-Module identification code memory, 44-Channel identification code memory, 5-First connector structure, 51-First fixed head, 511-First flow hole, 52-Second fixed head, 521-Fifth flow hole, 53-First connecting rod, 54-First movable head, 541-Second flow hole, 55-First telescopic spring, 6-Second connector structure Structure, 61-Third fixed head, 611-Third flow hole, 62-Second movable head, 621-Fourth flow hole, 63-Second connecting rod, 64-Moving cavity, 65-Moving block, 66-Second telescopic spring, 7-Electromagnetic control mechanism, 71-First electromagnetic control mechanism, 711-Electromagnet, 712-First adsorption magnet, 713-Second adsorption magnet, 8-Slow flow mechanism, 81-Slow flow limiting plate, 811-Flow port, 82-Limiting block, 83-Limiting slot, 84-Food-grade silicone buffer layer. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-15 The present invention provides a technical solution: a fluidized ice storage and micro-freezing preservation device for chilled fish, comprising: The cold storage compartment 1 is internally divided into a first independent cold storage area 12 and a second independent cold storage area 13 by a U-shaped partition 11; The core functional module 2 is detachably plugged into the U-shaped insulating plate 11, and it integrates the following: The circulation channel group 21 includes a main circulation channel 211 and a first delivery pump 212. The two ends of the main circulation channel 211 extend to the side wall of the functional core module 2 and are provided with a first connector 213. The central cooling mechanism 22 is located inside the functional core module 2 and is used to cool the fluidized ice flowing through the main circulation channel 211. The controller 3 is installed on the functional core module 2 and is electrically connected to the first delivery pump 212 and the central cooling mechanism 22. The data docking mechanism 4 is located between the functional core module 2 and the preservation chamber 1, and is electrically connected to the controller 3. It is used to transmit the status information of the functional core module 2 to the preservation chamber 1 and to receive external commands. The U-shaped insulating plate 11 is provided with a second connector 111 corresponding to the first connector 213. Both the first connector 213 and the second connector 111 are normally closed self-sealing connectors. The core functional module 2 is configured as follows: When inserted into place, the first pair of connectors 213 and the second pair of connectors 111 are connected to form a circulation loop; The controller 3 automatically configures the operating parameters based on the module identity information stored inside it; The controller 3 starts the first delivery pump 212 to drive the fluidized ice circulation, and the central cooling mechanism 22 continuously replenishes the cooling; When pulled out, the first connector 213 and the second connector 111 automatically return to their normally closed state, and the functional core module 2 can be maintained independently or cooled in a different location; Specifically, it also includes sensor arrays: The sensor group is electrically connected to the controller 3, including: An insertion sensor 31 is installed on the preservation compartment 1 or the U-shaped partition plate 11 to detect whether the core functional module 2 is inserted in place. Temperature sensor 32 is disposed in the first independent preservation zone 12 and the second independent preservation zone 13 for detecting the temperature of the preservation zone; A flow sensor 33 is installed on the main circulation channel 211 to detect the circulation flow rate of fluidized ice; Pressure sensor 34 is disposed on the main circulation channel 211 and is used to detect circulation pressure; A liquid level sensor 35 is installed in the central cooling chamber 221 to detect the liquid level or state of the phase change cold storage medium 222. The flow sensor 33, pressure sensor 34, and level sensor 35 are directly electrically connected to the controller 3; the insertion position sensor 31 is electrically connected to the controller 3 directly or through the data docking mechanism 4, depending on its installation position; and the temperature sensor 32 is electrically connected to the controller 3 through the data docking mechanism 4. Specifically, a first movable sealing cover 121 and a second movable sealing cover 131 are movably installed on the top of the first independent preservation area 12 and the second independent preservation area 13, respectively, and the first movable sealing cover 121 and the second movable sealing cover 131 open and close independently. The lower side wall of the first independent preservation zone 12 is provided with a first fluidized ice inlet 122 and a first fluidized ice outlet 123, and the lower side wall of the second independent preservation zone 13 is provided with a second fluidized ice inlet 132 and a second fluidized ice outlet 133. A removable sealing plug 14 is provided on the first fluidized ice inlet 122, the first fluidized ice outlet 123, the second fluidized ice inlet 132, and the second fluidized ice outlet 133; Specifically, the functional core module 2 includes a longitudinally extending plate-shaped body 23, the shape of which matches the inner contour of the U-shaped partition plate 11. The main circulation channel 211 includes at least one main pipe 2111 that runs longitudinally through the interior of the side wall of the plate-shaped body 23. The upper end of the main pipe 2111 opens into the top side of the plate-shaped body 23 and is fixedly installed with the first connector 213. The lower end of the main pipe 2111 opens into the bottom side of the plate-shaped body 23 and is fixedly installed with another first connector 213. The main pipe 2111 is located in an independent preservation area facing one side of the plate-shaped body 23 and is used to drive fluidized ice to circulate in the independent preservation area on that side. The first delivery pump 212 is fixedly installed inside the plate-shaped body 23 and is located on the path of the main pipeline 2111; The main circulation channel 211 also includes a secondary pipe 2112. The starting end of the secondary pipe 2112 is connected to the starting circulation end of the main pipe 2111 through a three-way valve 2113 and is located before the central cooling mechanism 22. The secondary pipe 2112 does not pass through the central cooling mechanism 22, and its end is connected back to the vicinity of the starting end of the main pipe 2111, located before the central cooling mechanism 22, so that the fluidized ice returning from the secondary pipe 2112 merges with the fluidized ice in the main pipe 2111 and enters the central cooling mechanism 22 together for cooling. The secondary pipe 2112 is enclosed inside the plate-shaped main body 23 and extends to the independent preservation area on the other side. The pipe wall of this section is made of thermally conductive metal material, so that the fluidized ice in the secondary pipe 2112 can radiate cold energy to the corresponding preservation area through the pipe wall to achieve low temperature maintenance. The U-shaped insulating plate 11 includes a horizontally arranged base plate 112 and side plates 113 extending upward from both sides of the base plate 112. The second joint 111 is fixedly installed at the top and bottom of the side plates 113 corresponding to the positions of the first joint 213. Specifically, the central cooling mechanism 22 includes: The central cooling chamber 221 is fixedly installed in the center of the plate-shaped main body 23 of the functional core module 2. The central cooling chamber 221 is a closed hollow cavity, and a heat insulation layer is formed between its inner wall and the outer wall of the plate-shaped main body 23. Phase change cold storage medium 222 is encapsulated in the internal space of the central cooling chamber 221; Wherein, when the main circulation channel 211 passes through the functional core module 2, at least one section of the main pipe 2111 is arranged in the form of a spiral coil or a serpentine coil inside the central cooling chamber 221, and the pipe wall of this section of the main pipe 2111 is made of a heat-conducting metal material, so that the fluidized ice flowing in the main pipe 2111 and the phase change cold storage medium 222 in the central cooling chamber 221 can exchange heat through the pipe wall; Specifically, the central cooling mechanism 22 also includes: A circulating heat exchange tube 223 is fixedly installed on the outer wall of the preservation chamber 1. One end of the circulating heat exchange tube 223 extends to the top of the preservation chamber 1 and is fixedly installed with a third connector 224. The other end of the circulating heat exchange tube 223 extends to the bottom of the preservation chamber 1 and is fixedly installed with another third connector 224. The second delivery pump 225 is installed on the pipeline of the circulating heat exchange tube 223 and is electrically connected to the controller 3; The outer wall of the plate-shaped main body 23 is provided with a fourth connector 226 corresponding to the position of the third connector 224. The fourth connector 226 is connected to the central cooling chamber 221 through an internal conveying pipe. The refrigeration unit 227 is fixedly installed on the outer wall of the preservation chamber 1, and is set on the pipeline of the circulating heat exchange tube 223 and electrically connected to the controller 3; Both the third connector 224 and the fourth connector 226 are normally closed self-sealing connectors, and their structures are compatible with each other. When the functional core module 2 is inserted into the U-shaped insulation plate 11, the third connector 224 is connected to the corresponding fourth connector 226, and the controller 3 controls the second delivery pump 225 and the refrigerator 227 to start, so as to provide external cooling for the phase change cold storage medium 222. Specifically, the first connector 213 and the fourth connector 226 have the same first connector structure 5 and are both fixedly installed on the functional core module 2. The second connector 111 and the third connector 224 have the same second connector structure 6 and are respectively fixedly installed on the U-shaped partition plate 11 and the preservation chamber 1; The first connector structure 5 includes: The first fixing head 51 is fixedly embedded in the side wall of the functional core module 2, and a first flow hole 511 is provided through its center along the axial direction. The second fixing head 52 is coaxially spaced from the first fixing head 51, and the two are fixedly connected by at least two circumferentially distributed first connecting rods 53; the second fixing head 52 has at least two fifth flow holes 521 in the circumferential direction; The first movable head 54 is coaxially and movably sleeved between the first fixed head 51 and the second fixed head 52. At least two second flow holes 541 are evenly distributed on its circumferential sidewall. The second flow holes 541 are offset from the first flow holes 511 in the axial direction and are corresponding to the fifth flow hole 521. The first telescopic spring 55 is sleeved on the first connecting rod 53 or evenly distributed circumferentially between the second fixed head 52 and the first movable head 54. When the first telescopic spring 55 is in a compressed state, its elastic force forces the first movable head 54 to press against the end face of the first fixed head 51 to close the first flow hole 511. The second connector structure 6 includes: The third fixing head 61 is fixedly embedded in the side wall of the U-shaped partition plate 11 or the preservation chamber 1, and a third flow hole 611 is provided through its center along the axial direction. The second movable head 62 is disposed on the side of the third fixed head 61 facing the first joint structure 5. At least two second connecting rods 63 are evenly distributed circumferentially on the side of the second movable head 62 facing the third fixed head 61. The second connecting rods 63 extend into the movable cavity 64 opened in the side wall of the third fixed head 61 and are fixedly connected to a movable block 65. The movable block 65 slides and seals with the movable cavity 64. The second telescopic spring 66 is installed in the movable cavity 64. One end of the spring abuts against the bottom wall of the movable cavity 64, and the other end abuts against the movable block 65. When the second telescopic spring 66 is in a stretched state, its elastic force forces the second movable head 62 to move toward the third fixed head 61 and close the third flow hole 611. The end face of the second movable head 62 is provided with a fourth flow hole 621 corresponding to the position of the second flow hole 541. Both the first connector structure 5 and the second connector structure 6 are provided with an electromagnetic control mechanism 7. The electromagnetic control mechanism 7 is electrically connected to the controller 3 and is used to generate electromagnetic force when the functional core module 2 is inserted, attracting the first movable head 54 to move towards the second fixed head 52, so that the second flow hole 541 is aligned with the fifth flow hole 521. At the same time, it attracts the second movable head 62 away from the third fixed head 61, so that the fourth flow hole 621 is aligned with the third flow hole 611, thereby forming a conductive flow channel. Specifically, the electromagnetic control mechanism 7 includes a first electromagnetic control mechanism 71 and a second electromagnetic control mechanism with the same structure; The first electromagnetic control mechanism 71 is disposed between the first connector 213 and the second connector 111, and the second electromagnetic control mechanism is disposed between the third connector 226 and the fourth connector 228; The first electromagnetic control mechanism 71 includes: Electromagnet 711 is embedded in the second fixing head 52 of the first connector structure 5 and is electrically connected to the controller 3; The first adsorption magnet 712 is embedded in the first movable head 54 of the first connector structure 5 and is set in correspondence with the electromagnet 711. The second adsorption magnet 713 is embedded in the second movable head 62 of the second connector structure 6 and is set in correspondence with the electromagnet 711. When the controller 3 issues a docking command, the electromagnet 711 is energized, which simultaneously attracts the first adsorption magnet 712 and the second adsorption magnet 713, causing the first movable head 54 and the second movable head 62 to approach each other and remain in contact, thus helping to maintain the conductivity of the flow channel. Specifically, the data docking mechanism 4 includes: The first data interface 41 is fixedly installed on the bottom end face of the functional core module 2. The first data interface 41 includes at least one set of spring pin connectors 411, and the pins of the spring pin connectors 411 protrude from the mounting surface. The second data interface 42 is fixedly installed at the corresponding position of the U-shaped isolation plate 11. The second data interface 42 includes contact pads 421 that correspond one-to-one with the spring pin connector 411. The module identification code memory 43 is fixedly installed inside the functional core module 2 and is a non-volatile memory. The module identification code memory 43 is electrically connected to the first data interface 41 and stores the unique identification code, model parameters and cold storage status data of the functional core module 2. The compartment identification code storage 44 is fixedly installed inside the fresh-keeping compartment 1 and electrically connected to the second data interface 42. It stores the unique identification code, model parameters and sensor configuration information of the fresh-keeping compartment 1. The temperature sensor 32 is electrically connected to the second data interface 42, and the temperature signal detected by the temperature sensor 32 is transmitted to the controller 3 through the second data interface 42 and the first data interface 41. When the core functional module 2 is inserted into place, the pin of the spring pin connector 411 makes elastic contact with the corresponding contact pad 421 and conducts a connection. The controller 3 reads the data in the module identification code memory 43 and the chamber identification code memory 44 through the data docking mechanism 4, and receives the temperature signal from the temperature sensor 32. The controller 3 automatically configures the rotation speed of the first delivery pump 212, the target temperature and working mode of the central cooling mechanism 22 based on the unique identification code of the functional core module 2, the unique identification code of the preservation chamber 1 and the detection signal of the temperature sensor 32. Specifically, a flow-slowing mechanism 8 is provided in the first independent preservation zone 12 and the second independent preservation zone 13 respectively; The flow control mechanism 8 includes: At least one flow-limiting plate 81, wherein the flow-limiting plate 81 is a rectangular flat plate, and multiple flow ports 811 that penetrate the thickness of the plate are evenly opened on it, and the diameter of the flow ports 811 is within a preset diameter range. Limiting blocks 82 are fixedly installed on the left and right edges of the slow-flow limiting plate 81, with at least two on each side; The limiting slots 83 are longitudinally formed on the inner sidewalls of the first independent preservation area 12 and the second independent preservation area 13. There are multiple limiting slots 83, which are arranged at equal intervals in the vertical direction. The opening shape of each limiting slot 83 matches the shape of the limiting block 82. The slow-flow limiting plate 81 is inserted into the limiting slots 83 of different heights by the limiting block 82, and is placed horizontally in the preservation area in a detachable manner, dividing the preservation area into multiple independent small compartments. The height of the small compartments can be adjusted by selecting the limiting slots 83 of different heights. The surface of the slow-flow limiting plate 81 is covered with a food-grade silicone buffer layer 84.

[0024] Core Working Principle: The core design concept of this device is to detachably insert a functional core module 2, which integrates a circulation channel group 21, a central cooling mechanism 22, a controller 3, and a data interface mechanism 4, onto the U-shaped partition plate 11 of the preservation chamber 1. The preservation chamber 1 is divided into a first independent preservation zone 12 and a second independent preservation zone 13 by the U-shaped partition plate 11. By inserting and removing the functional core module 2, the fluidized ice can be circulated for cooling, cold storage, and residual cold utilization, as well as the module can be independently maintained or recharged in a different location.

[0025] The detailed working process of this device is as follows: S1, Insertion and Docking Phase S11, Physical Insertion Guide: The operator inserts the core functional module 2 downwards along the U-shaped partition plate 11. The shape of the plate-shaped main body 23 matches the inner contour of the U-shaped partition plate 11 to ensure accurate guidance.

[0026] S12. Data and electrical interface: The first data interface 41 (containing a spring pin connector 411) at the bottom of the functional core module 2 is in elastic contact with the second data interface 42 (containing a contact pad 421) on the U-shaped isolation plate 11.

[0027] The insertion sensor 31 detects that the core module 2 has been inserted and transmits a signal (directly or via the data docking mechanism 4) to the controller 3.

[0028] At this point, controller 3 has obtained power and communication links, but the fluid pipeline is not yet connected.

[0029] S13. Automatic Identification and Configuration: The controller 3 reads the unique identification code, model parameters and cold storage status data of the functional core module 2 from the module identification code memory 43 through the data docking mechanism 4.

[0030] Simultaneously, the unique identification code, model parameters, and sensor configuration information of the preservation compartment 1 are read from the compartment identification code memory 44.

[0031] The controller 3 also receives the initial temperature signal from the temperature sensor 32 via the data docking mechanism 4 (other sensors such as the flow sensor 33, pressure sensor 34, and level sensor 35 are directly connected).

[0032] Based on all the information read, the controller 3 automatically determines the applicable working mode (see step S3 for details) and presets the operating parameters (such as the speed of the first delivery pump 212, the target temperature, the opening degree of the three-way valve, etc.).

[0033] S14, Fluid docking: The controller 3 issues a command to activate the electromagnetic control mechanism 7.

[0034] Since both the first pair of connectors 213 and the second pair of connectors 111 are normally closed self-sealing connectors, mechanical pushing alone cannot automatically open them upon insertion (the spring force would prevent opening). Therefore, the electromagnetic control mechanism 7 must be used to actively open them.

[0035] The electromagnetic control mechanism 7 includes a first electromagnetic control mechanism 71 (located between the first connector 213 and the second connector 111) and a second electromagnetic control mechanism (located between the third connector 224 and the fourth connector 226). The second electromagnetic control mechanism and the first electromagnetic control mechanism 71 have the same structure and the same control method. The following description will only take the first electromagnetic control mechanism 71 as an example.

[0036] When the electromagnet 711 is energized, it generates electromagnetic force, which simultaneously attracts the first magnet 712 (embedded inside the first movable head 54) and the second magnet 713 (embedded inside the second movable head 62).

[0037] The first movable head 54 moves toward the second fixed head 52 against the elastic force of the first telescopic spring 55, aligning the second flow hole 541 with the fifth flow hole 521; at the same time, the second movable head 62 moves away from the third fixed head 61 against the elastic force of the second telescopic spring 66, opening the third flow hole 611.

[0038] At this point, the first flow hole 511, the second flow hole 541, the fifth flow hole 521, the fourth flow hole 621, and the third flow hole 611 are aligned in sequence to form a conductive flow channel.

[0039] After the flow channel is fully open, the controller 3 starts the first delivery pump 212.

[0040] The same electromagnetic mechanism is also used to connect the flow path between the third connector 224 and the fourth connector 226.

[0041] After the fluid connection is completed, the entire circulation loop (main circulation channel 211) and the external cooling loop (circulation heat exchange tube 223) are in a flowable state.

[0042] When it is necessary to pull out, controller 3 first shuts down the pump, then cuts off the power to electromagnet 711, and the spring force resets the movable head, automatically closing the flow channel.

[0043] S2, Formal Work Phase (Executed according to the model) Controller 3 executes different control strategies based on the pre-identified and configured operating modes. This device can operate in three modes, and a detailed description of the three modes is given in step S3.

[0044] S21. Pull-out and Independent Maintenance Phase Stop working: Controller 3 shuts down all actuators, including the first delivery pump 212, the second delivery pump 225, and the refrigeration unit 227.

[0045] When the electromagnetic control mechanism 7 is de-energized, the electromagnet 711 loses its magnetism, and the first movable head 54 and the second movable head 62 reset under the action of their respective spring forces, thus closing the flow channel.

[0046] Physical removal: The operator pulls the core functional module 2 upwards. The first connector 213 and the second connector 111, as well as the third connector 224 and the fourth connector 226, automatically seal without leakage. The data connection is simultaneously disconnected.

[0047] Independent operation: The removed core functional module 2 can be transported to another location for cooling, maintenance, or replacement. Its internal controller 3 stores the module identification code memory 43, which records the usage history.

[0048] Reinsertion: After inserting another cooled functional core module 2, repeat the above process.

[0049] S3: Detailed Explanation of Three Working Modes Depending on the types of items placed in the first independent preservation zone 12 and the second independent preservation zone 13, the controller 3 automatically or by user selection switches between the following three modes.

[0050] Mode 1: Dual Seafood Preservation (Dynamic Circulation on Both Sides) Application scenario: Seafood products (such as chilled fish and chilled shrimp) that require rapid cooling and strong circulation in both preservation zones.

[0051] Specific structural settings: Main circulation channel 211: Both independent main pipes on both sides are opened for circulation, and the first delivery pump 212 runs at a high speed, driving the fluidized ice to flow rapidly in their respective preservation zones.

[0052] Secondary pipe 2112: Not open. Three-way valve 2113 is closed, and all fluidized ice flows through the central cooling mechanism 22 for deep cooling.

[0053] Central cooling unit 22: The predetermined target temperature is set to a lower value (e.g., -2℃ to -3℃). The phase change cold storage medium 222 stores cold sufficiently. If the cold capacity is insufficient, external supplementary cooling (refrigeration unit 227 and second transfer pump 225) is activated.

[0054] Sensor monitoring: Flow sensor 33 and pressure sensor 34 monitor in real time to ensure no blockage; temperature sensor 32 provides feedback on the temperature of each preservation zone.

[0055] It cools down quickly and can maintain a slightly frozen state for a long time, extending the shelf life of seafood.

[0056] Mode 2: Dual Fruit and Vegetable Preservation (Static Residual Cooling on Both Sides, Low Flow Rate) Application scenario: Both preservation zones store delicate crops such as vegetables and fruits that do not require rapid cooling and need to avoid mechanical damage. In this mode, the skin of vegetables and fruits can withstand a certain amount of fluidized ice flow friction.

[0057] Specific structural settings: Main circulation channel 211: The main pipes on both sides start circulation at low speed. The speed of the first delivery pump 212 is significantly reduced (for example, only 30% of that in mode one), and the fluidized ice flows slowly, reducing the scouring of fruits and vegetables.

[0058] Secondary pipe 2112: Not open. All fluidized ice still flows through the central cooling unit 22, but at a low circulation rate, resulting in a gentle release of cold energy.

[0059] Central cooling unit 22: Set the target temperature to a higher value (e.g., 0°C to 2°C) to avoid freezing damage to fruits and vegetables.

[0060] Slow-flow mechanism 8: The flow port 811 on the slow-flow limiting plate 81 further reduces the flow rate, and the food-grade silicone buffer layer 84 prevents collision.

[0061] Maintain a high humidity and low temperature environment to prevent water loss and wilting, while avoiding cold damage and mechanical damage.

[0062] Mode 3: Seafood on one side, fruits and vegetables on the other (the seafood area is dynamically circulated, and the fruit and vegetable area utilizes residual cooling). Application scenario: The most common and energy-efficient mode. The first independent preservation zone 12 (set as the seafood zone) starts dynamic circulation; the second independent preservation zone 13 (set as the fruit and vegetable zone) does not start independent circulation, but relies only on the radiant cooling of the secondary pipe 2112. This mode is suitable for vegetables and fruits with relatively fragile skin.

[0063] Specific structural settings: Main pipe circulation: Only the main pipe on the seafood side is open for circulation. The first delivery pump 212 operates at a normal high speed, and fluidized ice flows rapidly in the seafood area for cooling.

[0064] Sub-pipe 2112: Open. The three-way valve 2113 adjusts its opening degree according to the feedback from the temperature sensor 32 in the fruit and vegetable area, diverting a portion of the fluidized ice from the beginning of the main pipe in the seafood area (before the central cooling mechanism 22) into the sub-pipe 2112.

[0065] Flow within the secondary pipe 2112: The secondary pipe 2112 bypasses the central cooling mechanism 22 and is directly and enclosed within the plate-shaped main body 23 on the side closest to the fruit and vegetable area. The pipe wall is made of thermally conductive metal, and the fluidized ice radiates cooling energy to the fruit and vegetable area through the pipe wall without directly contacting the fruits and vegetables, thus preventing mechanical damage.

[0066] Return and merge: The end of the secondary pipe 2112 is connected back to the beginning of the main pipe (before the central cooling mechanism 22). The fluidized ice that has absorbed heat merges with the return ice of the main pipe and then enters the central cooling mechanism 22 together for re-cooling.

[0067] Temperature control: The target temperature for the seafood section is lower (e.g., -2℃), while the target temperature for the fruit and vegetable section is higher (e.g., 2-4℃). Since the fluidized ice is not deeply cooled by the central cooling mechanism 22 before entering the secondary pipe (its temperature is close to the temperature immediately after returning from the seafood section, approximately 0-2℃), it is perfectly suited to the refrigeration needs of fruits and vegetables. This utilizes the residual cold from the seafood section, eliminating the need for additional energy consumption for cooling the fruit and vegetable section. The residual cold is first directed to the fruit and vegetable section through the secondary pipe 2112, using its remaining cold energy to maintain the low temperature of the fruits and vegetables, before returning and merging for further cooling. This is equivalent to "cascaded utilization of cold energy," saving more than 20% of energy consumption.

[0068] Compared to Mode 1, Mode 3 significantly reduces total energy consumption because the cooling in the fruit and vegetable section comes from the residual cooling of the seafood circulation system, causing no mechanical damage to delicate fruits and vegetables (such as strawberries and leafy greens). At the same time, it is energy-efficient and environmentally friendly, with high energy utilization, and simultaneously meets two different preservation requirements, making it a dual-purpose machine.

[0069] Mode selection and automatic switching logic Users can directly select the mode through an external human-machine interface (communicating with the controller 3), or the controller 3 can automatically determine the mode based on the initial reading of the temperature sensor 32 and the material type input by the user.

[0070] Mode 3 is the most energy-efficient and is the preferred choice for mixed storage.

[0071] In all modes, the controller 3 monitors sensor data in real time and dynamically adjusts the speed of the first delivery pump 212, the opening of the three-way valve 2113, and the start and stop of the refrigerator 227 to maintain their respective target temperatures.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fluidized bed ice storage and micro-freezing preservation device for chilled fish, characterized in that, include: The cold storage compartment (1) is divided into a first independent cold storage area (12) and a second independent cold storage area (13) by a U-shaped partition (11). The functional core module (2) is detachably plugged into the U-shaped insulating plate (11), and it is integrated with: The circulation channel group (21) includes a main circulation channel (211) and a first delivery pump (212). The two ends of the main circulation channel (211) extend to the side wall of the functional core module (2) and are provided with a first connector (213). The central cooling mechanism (22) is located inside the functional core module (2) and is used to cool the fluidized ice flowing through the main circulation channel (211); The controller (3) is installed on the functional core module (2) and is electrically connected to the first delivery pump (212) and the central cooling mechanism (22); The data docking mechanism (4) is located between the functional core module (2) and the fresh food storage compartment (1) and is electrically connected to the controller (3). It is used to transmit the status information of the functional core module (2) to the fresh food storage compartment (1) and receive external instructions. The U-shaped insulating plate (11) is provided with a second connector (111) corresponding to the first connector (213). Both the first connector (213) and the second connector (111) are normally closed self-sealing connectors. The core functional module (2) is configured as follows: When inserted into place, the first pair of connectors (213) and the second pair of connectors (111) are connected to form a circulation loop; The controller (3) automatically configures the operating parameters based on the module identity information stored inside it; The controller (3) starts the first delivery pump (212) to drive the fluidized ice circulation, and the central cooling mechanism (22) continuously replenishes the cooling; When pulled out, the first connector (213) and the second connector (111) automatically return to normal closed state, and the functional core module (2) can be maintained independently or cooled in a different location.

2. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 1, characterized in that, It also includes a sensor array: The sensor group is electrically connected to the controller (3), including: An insertion sensor (31) is installed on the preservation compartment (1) or the U-shaped partition plate (11) to detect whether the core functional module (2) is inserted in place. Temperature sensor (32) is disposed in the first independent preservation zone (12) and the second independent preservation zone (13) for detecting the temperature of the preservation zone; A flow sensor (33) is installed on the main circulation channel (211) to detect the circulation flow rate of fluidized ice; A pressure sensor (34) is disposed on the main circulation channel (211) for detecting circulation pressure; A liquid level sensor (35) is installed in the central cooling chamber (221) to detect the liquid level or state of the phase change cold storage medium (222); The flow sensor (33), pressure sensor (34), and level sensor (35) are directly electrically connected to the controller (3); the insertion position sensor (31) is electrically connected to the controller (3) directly or through the data docking mechanism (4) depending on the installation position; and the temperature sensor (32) is electrically connected to the controller (3) through the data docking mechanism (4).

3. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 2, characterized in that: The first independent preservation area (12) and the second independent preservation area (13) are respectively movably equipped with a first movable sealing cover (121) and a second movable sealing cover (131) on their tops. The first movable sealing cover (121) and the second movable sealing cover (131) open and close independently. The first independent preservation zone (12) has a first fluidized ice inlet (122) and a first fluidized ice outlet (123) on the lower side wall, and the second independent preservation zone (13) has a second fluidized ice inlet (132) and a second fluidized ice outlet (133) on the lower side wall. A removable sealing plug (14) is provided on the first fluidized ice inlet (122), the first fluidized ice outlet (123), the second fluidized ice inlet (132), and the second fluidized ice outlet (133).

4. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 3, characterized in that: The functional core module (2) includes a longitudinally extending plate-shaped body (23), the shape of which matches the inner contour of the U-shaped partition plate (11). The main circulation channel (211) includes at least one main pipe (2111) that runs longitudinally through the interior of the side wall of the plate-shaped body (23). The upper end of the main pipe (2111) opens at the top side of the plate-shaped body (23) and is fixedly installed with the first connector (213). The lower end of the main pipe (2111) opens at the bottom side of the plate-shaped body (23) and is fixedly installed with another first connector (213). The main pipe (2111) is located in an independent preservation area facing one side of the plate-shaped body (23) and is used to drive fluidized ice to circulate in the independent preservation area on that side. The first delivery pump (212) is fixedly installed inside the plate-shaped body (23) and located on the path of the main pipeline (2111); The main circulation channel (211) also includes a secondary pipe (2112). The starting end of the secondary pipe (2112) is connected to the starting circulation end of the main pipe (2111) through a three-way valve and is located before the central cooling mechanism (22). The secondary pipe (2112) does not pass through the central cooling mechanism (22). Its end is connected back to the vicinity of the starting end of the main pipe (2111) and is located before the central cooling mechanism (22), so that the fluidized ice flowing back from the secondary pipe (2112) merges with the fluidized ice of the main pipe (2111) and enters the central cooling mechanism (22) together for cooling. The secondary pipe (2112) is enclosed inside the plate-shaped main body (23) and extends to the independent preservation area on the other side. The pipe wall of this section is made of heat-conducting metal material, so that the fluidized ice in the secondary pipe (2112) can radiate cold energy to the corresponding preservation area through the pipe wall to achieve low temperature maintenance. The U-shaped insulating plate (11) includes a horizontally arranged base plate (112) and side plates (113) extending upward from both sides of the base plate (112). The second pair of connectors (111) are fixedly installed on the top and bottom of the side plates (113) respectively, corresponding to the positions of the first pair of connectors (213).

5. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 4, characterized in that, The central cooling system (22) includes: The central cooling chamber (221) is fixedly installed in the center of the plate-shaped body (23) of the functional core module (2). The central cooling chamber (221) is a closed hollow cavity, and a heat insulation layer is formed between its inner wall and the outer wall of the plate-shaped body (23). A phase change cold storage medium (222) is encapsulated in the internal space of the central cooling chamber (221); When the main circulation channel (211) passes through the functional core module (2), at least one section of the main pipe (2111) is arranged in the form of a spiral coil or a serpentine coil inside the central cooling chamber (221), and the pipe wall of this section of the main pipe (2111) is made of a heat-conducting metal material, so that the fluidized ice flowing in the main pipe (2111) and the phase change cold storage medium (222) in the central cooling chamber (221) can exchange heat through the pipe wall.

6. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 5, characterized in that, The central cooling system (22) also includes: A circulating heat exchange tube (223) is fixedly installed on the outer wall of the preservation chamber (1). One end of the circulating heat exchange tube (223) extends to the top of the preservation chamber (1) and is fixedly installed with a third connector (224). The other end of the circulating heat exchange tube (223) extends to the bottom of the preservation chamber (1) and is fixedly installed with another third connector (224). The second delivery pump (225) is installed on the pipeline of the circulating heat exchange tube (223) and is electrically connected to the controller (3); The outer wall of the plate-shaped main body (23) is provided with a fourth connector (226) corresponding to the position of the third connector (224), and the fourth connector (226) is connected to the central cooling chamber (221) through an internal conveying pipe. The refrigeration unit (227) is fixedly installed on the outer wall of the preservation chamber (1), and is set on the pipeline of the circulating heat exchange tube (223) and electrically connected to the controller (3); The third connector (224) and the fourth connector (226) are both normally closed self-sealing connectors, and their structures are mutually compatible. When the functional core module (2) is inserted into the U-shaped insulating plate (11), the third connector (224) is connected to the corresponding fourth connector (226), and the controller (3) controls the second delivery pump (225) and the refrigerator (227) to start, so as to provide external cooling for the phase change cold storage medium (222).

7. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 6, characterized in that: The first connector (213) and the fourth connector (226) have the same first connector structure (5) and are both fixedly installed on the functional core module (2); The second connector (111) and the third connector (224) have the same second connector structure (6) and are respectively fixedly installed on the U-shaped partition plate (11) and the preservation chamber (1); The first connector structure (5) includes: The first fixing head (51) is fixedly embedded in the side wall of the functional core module (2), and a first flow hole (511) is opened through its center along the axial direction. The second fixing head (52) is coaxially spaced from the first fixing head (51), and the two are fixedly connected by at least two circumferentially distributed first connecting rods (53); the second fixing head (52) has at least two fifth flow holes (521) in the circumferential direction. The first movable head (54) is coaxially and movably sleeved between the first fixed head (51) and the second fixed head (52). At least two second flow holes (541) are evenly distributed on its circumferential sidewall. The second flow holes (541) are offset from the first flow holes (511) in the axial direction and are corresponding to the fifth flow hole (521). The first telescopic spring (55) is sleeved on the first connecting rod (53) or evenly distributed circumferentially between the second fixed head (52) and the first movable head (54). The first telescopic spring (55) is in a compressed state, and its elastic force forces the first movable head (54) to press against the end face of the first fixed head (51) to close the first flow hole (511). The second connector structure (6) includes: The third fixing head (61) is fixedly embedded in the side wall of the U-shaped partition plate (11) or the preservation chamber (1), and a third flow hole (611) is opened through its center along the axial direction. The second movable head (62) is disposed on the side of the third fixed head (61) facing the first joint structure (5). At least two second connecting rods (63) are evenly distributed circumferentially on the side of the second movable head (62) facing the third fixed head (61). The second connecting rods (63) extend into the movable cavity (64) opened in the side wall of the third fixed head (61) and are fixedly connected to a movable block (65). The movable block (65) and the movable cavity (64) are in sliding and sealing cooperation. The second telescopic spring (66) is installed in the movable cavity (64), with one end abutting against the bottom wall of the movable cavity (64) and the other end abutting against the movable block (65). The second telescopic spring (66) is in a stretched state, and its elastic force forces the second movable head (62) to move toward the third fixed head (61) and close the third flow hole (611). The end face of the second movable head (62) is provided with a fourth flow hole (621) corresponding to the position of the second flow hole (541). Both the first connector structure (5) and the second connector structure (6) are provided with an electromagnetic control mechanism (7). The electromagnetic control mechanism (7) is electrically connected to the controller (3) and is used to generate electromagnetic force when the functional core module (2) is inserted, attracting the first movable head (54) to move towards the second fixed head (52), so that the second flow hole (541) is aligned with the fifth flow hole (521), and at the same time attracting the second movable head (62) away from the third fixed head (61), so that the fourth flow hole (621) is aligned with the third flow hole (611), thereby forming a conductive flow channel.

8. The fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 7, characterized in that, The electromagnetic control mechanism (7) includes a first electromagnetic control mechanism (71) and a second electromagnetic control mechanism with the same structure; The first electromagnetic control mechanism (71) is disposed between the first connector (213) and the second connector (111), and the second electromagnetic control mechanism is disposed between the third connector (224) and the fourth connector (226); The first electromagnetic control mechanism (71) includes: An electromagnet (711) is embedded in the second fixing head (52) of the first connector structure (5) and is electrically connected to the controller (3); The first adsorption magnet (712) is embedded in the first movable head (54) of the first connector structure (5) and is set in correspondence with the electromagnet (711); The second adsorption magnet (713) is embedded in the second movable head (62) of the second connector structure (6) and is set in correspondence with the electromagnet (711); When the controller (3) issues a docking command, the electromagnet (711) is energized, and simultaneously attracts the first adsorption magnet (712) and the second adsorption magnet (713), so that the first movable head (54) and the second movable head (62) approach each other and remain in contact, thus helping to maintain the conduction state of the flow channel.

9. A fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 8, characterized in that, The data docking mechanism (4) includes: The first data interface (41) is fixedly installed on the bottom end face of the functional core module (2). The first data interface (41) includes at least one set of spring pin connectors (411), and the pins of the spring pin connectors (411) protrude from the mounting surface. The second data interface (42) is fixedly installed at the corresponding position of the U-shaped isolation plate (11). The second data interface (42) includes contact pads (421) that correspond one-to-one with the spring pin connector (411). The module identification code memory (43) is fixedly installed inside the functional core module (2) and is a non-volatile memory. The module identification code memory (43) is electrically connected to the first data interface (41) and stores the unique identification code, model parameters and cold storage status data of the functional core module (2). The compartment identification code storage (44) is fixedly installed inside the fresh-keeping compartment (1) and electrically connected to the second data interface (42). It stores the unique identification code, model parameters and sensor configuration information of the fresh-keeping compartment (1). The temperature sensor (32) is electrically connected to the second data interface (42), and the temperature signal detected by the temperature sensor (32) is transmitted to the controller (3) through the second data interface (42) and the first data interface (41). When the functional core module (2) is inserted into place, the pin of the spring pin connector (411) makes elastic contact with the corresponding contact pad (421) and conducts the connection. The controller (3) reads the data in the module identification code memory (43) and the chamber identification code memory (44) through the data docking mechanism (4) and receives the temperature signal from the temperature sensor (32). The controller (3) automatically configures the rotation speed of the first delivery pump (212), the target temperature and working mode of the central cooling mechanism (22) based on the unique identification code of the functional core module (2), the unique identification code of the preservation chamber (1) and the detection signal of the temperature sensor (32).

10. A fluidized bed ice storage and micro-freezing preservation device for chilled fish according to claim 9, characterized in that: Slow-flow mechanism (8) is provided in the first independent preservation zone (12) and the second independent preservation zone (13); The flow control mechanism (8) includes: At least one flow-limiting plate (81), the flow-limiting plate (81) is a rectangular plate, and multiple flow ports (811) that penetrate the thickness of the plate are evenly opened on it, the diameter of the flow ports (811) is within a preset diameter range; Limiting blocks (82) are fixedly installed on the left and right edges of the slow-flow limiting plate (81), with at least two on each side; The limiting slots (83) are longitudinally opened on the inner sidewalls of the first independent preservation area (12) and the second independent preservation area (13). There are multiple limiting slots (83) and they are arranged at equal intervals in the vertical direction. The opening shape of each limiting slot (83) matches the shape of the limiting block (82). The slow-flow limiting plate (81) is inserted into the limiting slots (83) of different heights by the limiting block (82), and is placed horizontally in the preservation area in a detachable manner, dividing the preservation area into multiple independent small compartments. The height of the small compartments can be adjusted by selecting the limiting slots (83) of different heights. The surface of the slow-flow limiting plate (81) is covered with a food-grade silicone buffer layer (84).

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