Quick-freezing and control method for catches by using dipping type quick-freezing equipment

Abstract

The invention discloses a quick-freezing and control method for catches by using dipping type quick-freezing equipment, the quick-freezing equipment comprises an identification module, a circulation module and a quick-freezing module, the quick-freezing module comprises a quick-freezing bin and a dipping goods shelf, and the quick-freezing method comprises the following steps: uniformly laying catches on the dipping goods shelf; the recognition module recognizes and obtains fishing information, and then the dipping goods shelf is sent into the quick-freezing bin for dipping and quick-freezing; the circulating module adjusts the circulating flow of the refrigerating fluid according to the fishing information, and the quick-freezing module adjusts the quick-freezing time according to the obtained fishing information; and after the quick freezing is finished, the dipping shelf is moved away, and the quick-frozen catches are transferred out for frozen storage. According to the method, the quick-freezing parameters can be controlled according to the fishing information, and the quick-freezing time and the circulating flow of the secondary refrigerant are specifically controlled, so that the influence of the flow of the secondary refrigerant on the liquid inlet of the quick-frozen product and the quick-freezing efficiency are balanced, and the enough refrigerating capacity and action time of the secondary refrigerant are guaranteed.

Description

Technical Field

[0001] This application relates to the field of immersion equipment technology, and in particular to a quick-freezing method and control method for fish catches using immersion quick-freezing equipment. Background Technology

[0002] In the food industry, ultrasound-assisted immersion freezing has broad application prospects. Ultrasound can break dendritic ice crystals, reduce their size, and disperse the ice crystal fragments to form ice nuclei. While ultrasound-assisted freezing brings beneficial effects, it also generates thermal effects. Therefore, further research is needed to realize the industrial application of ultrasound-assisted immersion freezing.

[0003] Immersion freezing, also known as non-freezing liquid freezing, is a highly efficient freezing method that utilizes direct or indirect contact between a refrigerant and food to achieve rapid cooling. Compared to conventional air-cooling and other freezing methods, immersion freezing offers numerous advantages, including faster freezing speed, better thermal conductivity, lower freeze-drying loss, and higher efficiency. The frozen preservation of fish requires more stringent standards than other food preservation methods. Conventional freezing can cause large ice crystals to form on the fish's body and internal cells, leading to cell rupture and loss of flavor, or even off-flavors. While quick-freezing is relatively gentle on fish products, it is energy-intensive and costly; therefore, cost reduction and efficiency improvement have always been key concerns in the field of fish preservation. Summary of the Invention

[0004] The purpose of this application is to provide a quick-freezing method using an immersion quick-freezing device that provides uniform and rapid freezing effect with stable power consumption, and to provide a product control method that combines the above quick-freezing method.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a quick-freezing method for fish catches using an immersion quick-freezing device, wherein the quick-freezing device includes an identification module, a circulation module, and a quick-freezing module, and the quick-freezing module includes a quick-freezing chamber and an immersion rack; the quick-freezing method includes the following steps: S1. Spread the catch evenly on the soaking rack; S2. The identification module identifies and obtains the catch information, and then sends the immersion rack into the quick-freezing chamber for immersion and quick-freezing; S3. The circulation module adjusts the circulation flow rate of the freezing liquid according to the catch information, and the quick-freezing module adjusts the quick-freezing time according to the obtained catch information. S4. After quick-freezing, remove the soaking rack and transfer the quick-frozen catch out of the freezer.

[0006] As a preferred embodiment, the identification module in S2 above can identify the weight specification of the catch as G; in S3 above, the quick-freezing time of the catch in the quick-freezing module is adjusted to T1, and the circulation module adjusts the circulation flow rate of the refrigerant entering and exiting the quick-freezing module to V1. The above parameters satisfy the following conditions: When G < 350g, T1 = 20min, V1 = 10.5L / min; When 350g < G ≤ 450g, 20min < T1 ≤ 27min, 10.5L / min < V1 ≤ 11.5L / min; When 450g < G ≤ 550g, 27min < T1 ≤ 33min, 11.5L / min < V1 ≤ 12.5L / min; When 550g < G ≤ 650g, 33min < T1 ≤ 37min, 12.5L / min < V1 ≤ 13.5L / min; When 650g < G ≤ 750g, 37min < T1 ≤ 43min, 13.5L / min < V1 ≤ 14.5L / min; When 750g < G ≤ 850g, 43min < T1 ≤ 47min, 14.5L / min < V1 ≤ 15.5L / min; When G > 850g, T1 = 50min, V1 = 16.0L / min.

[0007] As a preferred embodiment, the identification module in S2 above can identify the thickness specification of the catch as D; in S3 above, the quick-freezing time of the catch in the quick-freezing module is adjusted to T2, and the initial flow rate of the refrigerant entering the quick-freezing module through the circulation module is V2. The above parameters satisfy the following conditions: When D < 1.5 cm, T2 = 20 min, V2 = 10.5 L / min; When 1.5cm < D ≤ 2.5cm, 20min < T2 ≤ 27min, 10.5L / min < V2 ≤ 11.5L / min; When 2.5cm < D ≤ 3.5cm, 27min < T2 ≤ 33min, 11.5L / min < V2 ≤ 12.5L / min; When 3.5cm < D ≤ 4.5cm, 33min < T2 ≤ 37min, 12.5L / min < V2 ≤ 13.5L / min; When 4.5cm < D ≤ 5.5cm, 37min < T2 ≤ 43min, 13.5L / min < V2 ≤ 14.5L / min; When 5.5cm < D ≤ 6.5cm, 43min < T2 ≤ 47min, 14.5L / min < V2 ≤ 15.5L / min; When D > 6.5 cm, T2 = 50 min, V2 = 16.0 L / min.

[0008] As a preferred embodiment, the quick-freezing equipment further includes a foaming module, which is positioned at the location where the refrigerant enters the quick-freezing module and generates bubbles within the quick-freezing equipment; the quick-freezing method further includes the following steps: S5. After step S3, the foaming module adjusts the foaming power, single foaming time and foaming interval according to the identified catch information to generate bubbles of different sizes and densities, and uses the circulation flow rate adjusted in step S3 to make the generated bubbles act on the catch.

[0009] As a preferred embodiment, the foaming module in S5 above is an ultrasonic foaming device, the weight specification information of the catch identified by the identification module is G or the thickness specification of the catch identified by the identification module is D, and the operating frequency of the ultrasonic foaming device is adjusted to F according to the catch information. The above parameters satisfy the following conditions: When D≤1.5cm or G≤350g, F=40KHz; When 1.5cm < D ≤ 2.5cm or 350g < G ≤ 450g, 40KHz < F ≤ 45KHz; When 2.5cm < D ≤ 3.5cm or 450g < G ≤ 550g, 45KHz < F ≤ 50KHz; When 3.5cm < D ≤ 4.5cm or 550g < G ≤ 650g, 50KHz < F ≤ 55KHz; When 4.5cm < D ≤ 5.5cm or 650g < G ≤ 750g, 55KHz < F < 60KHz; When 5.5cm < D ≤ 6.5cm or 750g < G ≤ 850g, F = 60KHz; When D > 6.5cm or G > 850g, F = 60KHz.

[0010] As a preferred embodiment, the ultrasonic foaming device has a pulse adjustment system that enables the ultrasonic foaming device to have a controllable single working time and working interval.

[0011] More preferably, the ultrasonic foaming device has a single working time of 2 seconds and a working interval of 1 second.

[0012] As a preferred embodiment, the circulation module includes a temperature control component adapted to monitor the outlet temperature of the quick-freezing module and adjust the temperature of the refrigerant according to the monitored outlet temperature to regulate the cooling capacity in real time.

[0013] As a preferred embodiment, the quick-freezing module includes a liquid level monitoring component, which is adapted to monitor the real-time liquid level inside the quick-freezing module so that the refrigerant level inside the quick-freezing module is always higher than the height of the catch.

[0014] This application also proposes a method for controlling the quick-freezing of fish catches. The quick-freezing equipment further includes a marking module, an electronic control module, a data transmission module, a cloud storage module, and a remote interaction module. The control method includes the following steps: a. After the catch is classified, the identification module identifies the real-time information of the catch and quick-freezing, and the marking module processes and marks and writes the real-time information data. b. The electronic control module transmits the real-time information data processed and written by the marking module to the cloud storage module for storage in real time through the data transmission module. c. The manager can view the catch information stored in the cloud storage module in real time through the remote interaction module, and adjust the quick-freezing parameters of the quick-freezing equipment in real time through the electronic control module.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The quick-freezing parameters are controlled based on the catch information, specifically the quick-freezing time and the circulation flow rate of the refrigerant. This balances the impact of the refrigerant flow rate on the liquid intake of the quick-frozen products and the quick-freezing efficiency, ensuring sufficient refrigerant cooling capacity and action time. This allows for sufficient heat exchange between the refrigerant and the catch, greatly reducing energy consumption while ensuring freezing speed and the quality of the frozen catch.

[0016] When using ultrasonic-assisted freezing for fish, the thickness or weight of the fish is identified, and the ultrasonic working frequency with different power is controlled. With the addition of appropriate refrigerant flow rate and volume, the microbubbles generated by the ultrasound are delivered to the surface of the fish at an appropriate speed. This ensures that after adding ultrasonic-assisted freezing, the overall power consumption and effect of the impregnation equipment are balanced, and it can work in synergy with the circulation volume of the refrigerant to keep the power consumption and effect of both within the optimal range, thereby achieving a better freezing effect while balancing power consumption. Attached Figure Description

[0017] Figure 1 This is a flowchart of one of the quick-freezing methods for fish catches in this application.

[0018] Figure 2 This is a logic diagram illustrating the determination of corresponding quick-freezing parameters using the identified gravity data.

[0019] Figure 3 This is a logic diagram illustrating how the identified thickness data is used to determine the corresponding quick-freezing parameters.

[0020] Figure 4 This is a schematic diagram showing the cooperation between the quick-freezing module and the circulation module.

[0021] Figure 5 This is a schematic diagram of the overall structure of the quick-freezing module.

[0022] Figure 6 This is a schematic diagram of using an ultrasonic foaming device in conjunction with liquid injection.

[0023] Figure 7 This is an overall schematic diagram of one of the control methods in this application.

[0024] Figure 8 This is a schematic diagram of the quick-freezing module from another perspective.

[0025] In the diagram: 1. Quick-freezing module; 2. Circulation module; 3. Ultrasonic foaming device; 4. Liquid inlet. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] Example: Reference Figures 1 to 8 This application proposes a quick-freezing method for fish catches using an immersion quick-freezing device. The quick-freezing device includes an identification module, a circulation module 2, and a quick-freezing module 1. The quick-freezing module 1 includes a quick-freezing chamber and an immersion rack. The circulation module 2 and quick-freezing module 1 are common components of quick-freezing devices. The circulation module 2 is a component in the immersion quick-freezing device used for refrigerant circulation, and the quick-freezing module 1 provides the quick-freezing space and facilitates refrigerant circulation. The identification module is used to acquire basic information about the fish catch; common methods include those for weighing, thickness measurement, and visual cameras.

[0031] This quick-freezing method mainly includes the following steps: S1. Spread the catch evenly on the immersion rack; the immersion rack can be multi-layered. The catch needs to be spread evenly on the immersion rack. Even spreading makes the contact with the refrigerant more uniform, thereby ensuring uniform heat transfer and heat transfer efficiency.

[0032] S2. The identification module identifies and obtains the catch information, and then sends the immersion rack into the quick-freezing compartment for immersion and quick-freezing. The identification module obtains the necessary catch information to provide a data basis for subsequent adjustments, such as identifying the weight or thickness of individual catches, and then selecting quick-freezing parameters according to different sizes.

[0033] S3. The circulation module 2 adjusts the circulation flow rate of the refrigerant based on the catch information, and the quick-freezing module 1 adjusts the quick-freezing time based on the obtained catch information. The circulation module 2 generally has common functions such as circulating the refrigerant, controlling the flow rate, and recooling the discharged refrigerant. The identification module in this application is used to identify the basic information of the catch, while the circulation module 2, as one of the execution devices, controls the flow rate of the refrigerant during circulation. The quick-freezing module 1, as another execution device, can adjust the residence time of the catch in the quick-freezing chamber, that is, the specific quick-freezing time. By using the identified specific information, the freezing parameters of the catch are specifically adjusted to ensure that the catch of the corresponding size receives the appropriate quick-freezing refrigeration, thereby ensuring the quick-freezing quality.

[0034] S4. After quick-freezing, remove the soaking rack and transfer the quick-frozen catch out of the freezer. During freezer storage, it is generally stored at a temperature below -40°C for a long time.

[0035] In S2 above, the identification module can identify the weight specification of the catch as G; in S3 above, the quick-freezing time of the catch in the quick-freezing module 1 is adjusted to T1, and the circulation module 2 adjusts the circulation flow rate of the refrigerant entering and exiting the quick-freezing module 1 to V1. The following example uses yellow croaker as an example, using yellow croaker of different weights and quick-freezing with different parameters. Among them, the morphological changes of yellow croaker weighing more than 850g are relatively small as their weight continues to increase, so a set of example data is given. Quick-freezing is performed according to the corresponding parameters. After quick-freezing, the thickest part of the middle of the yellow croaker is cut open immediately and the temperature at the center is measured as the final temperature (experimental values ​​are rounded down), resulting in the following example table:

[0036] The final temperature above is based on -40℃ (storage standard). According to the table, referring to Examples 1 to 3, Example 1 and Example 2 are compared. The quick-freezing time is different, but the circulation flow rate is the same. Examples 1 and 3 did not meet the requirements, while Example 2 met the requirements and was slightly higher than the standard value. Therefore, the parameters of Example 2 are used as the quick-freezing parameters for a weight of about 300 grams. The quick-freezing time is 20 minutes and the circulation flow rate is 10.5 liters per minute. Since the catch is small at this time, the minimum value is used.

[0037] Referring to Examples 4 to 6, Example 4 did not meet the standard, while Example 6 was just near the standard value. However, in actual production, in order to ensure that the temperature meets the standard, the actual quick-freezing temperature is generally slightly lower than -40°C. Example 6 can be compared with Example 5 and can be regarded as the inflection point of the circulation flow rate under the same quick-freezing time. Therefore, the actual parameters can be given by referring to Example 2. Specifically, when the catch is around 400 grams, the quick-freezing time is about 25 minutes and the circulation flow rate is about 11.0 liters per minute.

[0038] Referring to Examples 7 to 9, Examples 7 and 9 did not meet the standard, while Example 8 met and exceeded the standard value. The actual parameters can be given by taking Example 8 as a reference. Specifically, when the catch is around 500 grams, the quick-freezing time is about 30 minutes and the circulation flow rate is about 12.0 liters per minute.

[0039] Referring to Examples 10 to 12, Examples 10 and 12 did not meet the standard, while Example 11 met and exceeded the standard value. The actual parameters can be given by selecting Example 11 as a reference. Specifically, when the catch is around 600 grams, the quick-freezing time is about 35 minutes and the circulation flow rate is about 13.0 liters per minute.

[0040] Referring to Examples 13 to 15, Examples 13 and 15 did not meet the standard, while Example 14 met and exceeded the standard value. The actual parameters can be given by taking Example 14 as a reference. Specifically, when the catch is around 700 grams, the quick-freezing time is about 40 minutes and the circulation flow rate is about 14.0 liters per minute.

[0041] Referring to Examples 16 to 18, Examples 16 and 18 did not meet the standard, while Example 17 met the standard value and exceeded it by a large margin. The actual parameters can be given by taking Example 17 as a reference. Specifically, when the catch exceeds 850 grams, the quick-freezing time is about 45 minutes and the circulation flow rate is about 15.0 liters per minute.

[0042] Referring to Example 19, the final temperature reaches and exceeds the standard value. Since larger catches, such as those weighing more than 2 jin, require more cooling capacity, the final temperature is -47°C, which is significantly higher than the standard value. Therefore, in the quick-freezing parameters for this range of catches, the quick-freezing time is set to the maximum of 50 minutes and the circulation flow rate is set to the maximum of 16.0 liters per minute.

[0043] Reference Figure 3 This is a schematic diagram illustrating the specific logic of quick-freezing module 1 and circulation module 2 controlling the quick-freezing parameters, summarized above: When G < 350g, T1 = 20min, V1 = 10.5L / min; for smaller catches, use the minimum quick-freezing time of 20 minutes and the minimum circulation flow rate of 10.5 liters per minute. This range is considered as quick-freezing parameter one.

[0044] When 350g < G ≤ 450g, 20min < T1 ≤ 27min, 10.5L / min < V1 ≤ 11.5L / min; as the catch weight increases slightly, the quick-freezing time increases to about 25 minutes, and the minimum circulation flow rate increases to about 11 liters per minute. This range is considered as quick-freezing parameter two.

[0045] When 450g < G ≤ 550g, 27min < T1 ≤ 33min, 11.5L / min < V1 ≤ 12.5L / min; as the catch weight continues to increase, the quick-freezing time increases to about 30 minutes, and the minimum circulation flow rate increases to about 12 liters per minute. This range is considered as quick-freezing parameter three.

[0046] When 550g < G ≤ 650g, 33min < T1 ≤ 37min, 12.5L / min < V1 ≤ 13.5L / min; as the catch weight continues to increase, the quick-freezing time increases to about 35 minutes, and the minimum circulation flow rate increases to about 13 liters per minute. This range is considered as quick-freezing parameter four.

[0047] When 650g < G ≤ 750g, 37min < T1 ≤ 43min, 13.5L / min < V1 ≤ 14.5L / min; as the catch weight continues to increase, the quick-freezing time increases to about 35 minutes, and the minimum circulation flow rate increases to about 14 liters per minute. This range is considered as quick-freezing parameter five.

[0048] When 750g < G ≤ 850g, 43min < T1 ≤ 47min, 14.5L / min < V1 ≤ 15.5L / min; as the catch weight continues to increase, the quick-freezing time increases to about 40 minutes, and the minimum circulation flow rate increases to about 15 liters per minute. This range is considered as quick-freezing parameter six.

[0049] When G > 850g, T1 = 50min, V1 = 16.0L / min. For larger catches, the quick-freezing time is increased to the maximum of 50 minutes, and the circulation flow rate is increased to the maximum of 16 liters per minute. This range is considered as quick-freezing parameter seven.

[0050] Of course, only a few typical values ​​are given above. The principle is to find the quick-freezing parameters corresponding to the two values ​​before and after the standard value based on the control variables. Therefore, the above examples are used for illustration in order to facilitate comparison.

[0051] The quick-freezing parameters of the catch can also be adjusted according to its thickness specifications, and the principle is similar to that of using weight specifications as described above. In S2 above, the identification module can identify the thickness specification of the catch as D; in S3 above, the quick-freezing time of the catch in the quick-freezing module 1 is adjusted to T2, and the initial flow rate of the refrigerant entering the quick-freezing module 1 is V2 through the circulation module 2. Since the yellow croaker has a uniform body shape, the thickness can also be used as a dimension to adjust the quick-freezing parameters. The following embodiments still use yellow croaker as an example. The principle is the same as that of embodiments 1 to 19 above. The following are examples of quick-freezing parameters corresponding to obtaining better quick-freezing effects.

[0052]

[0053] According to Examples 21 to 27, the final temperature corresponding to this group is lower than when using weight as the dimension, but some parameters are the same as when using weight as the dimension. The reason for this setting is that, due to equipment limitations, a fixed combination of parameters is easier to implement and simplifies the complex logic of system operation for each device. (Refer to...) Figure 3 Specifically, the above parameters must satisfy the following conditions: When D < 1.5 cm, T2 = 20 min, V2 = 10.5 L / min; the thickness of the catch is small, so the minimum quick-freezing time and the small circulation flow rate are used.

[0054] When 1.5cm < D ≤ 2.5cm, 20min < T2 ≤ 27min, 10.5L / min < V2 ≤ 11.5L / min; the thickness of the catch is slightly increased, and the quick-freezing time and circulation rate are slightly increased. Compared with only increasing the quick-freezing time or only increasing the circulation rate, increasing both can ensure a better freezing effect with a small change in power.

[0055] When 2.5cm < D ≤ 3.5cm, 27min < T2 ≤ 33min, 11.5L / min < V2 ≤ 12.5L / min; the thickness of the catch increases slightly, and the quick-freezing time and circulation flow rate continue to increase.

[0056] When 3.5cm < D ≤ 4.5cm, 33min < T2 ≤ 37min, 12.5L / min < V2 ≤ 13.5L / min; as the thickness of the catch continues to increase, the quick-freezing time and the circulation flow rate also continue to increase.

[0057] When 4.5cm < D ≤ 5.5cm, 37min < T2 ≤ 43min, 13.5L / min < V2 ≤ 14.5L / min; as the thickness of the catch continues to increase, the quick-freezing time and the circulation flow rate also continue to increase.

[0058] When 5.5cm < D ≤ 6.5cm, 43min < T2 ≤ 47min, 14.5L / min < V2 ≤ 15.5L / min; as the thickness of the catch continues to increase, the quick-freezing time and the circulation flow rate also continue to increase.

[0059] When D > 6.5 cm, T2 = 50 min, V2 = 16.0 L / min. For thicker catches, the quick-freezing time is increased to the maximum of 50 minutes, and the circulation rate is increased to the maximum of 16 liters per minute.

[0060] As a preferred embodiment, the quick-freezing equipment also includes a foaming module, which is adapted to generate air bubbles within the quick-freezing equipment; the quick-freezing method further includes the following steps: S5. Following step S3, the foaming module adjusts the foaming power, single foaming time, and foaming interval based on the identified catch information to generate bubbles of different sizes and densities. The generated bubbles are then applied to the catch in coordination with the circulation flow rate adjusted in step S3. Since the quick-freezing module 1 typically uses a relatively enclosed box or cabinet, such as... Figure 5 Generally, the quick-freezing module 1 does not have a foaming device directly installed inside. In this application, energy is transferred through a refrigerant during quick-freezing. Therefore, this application sets the foaming device at the liquid inlet 4. By directly acting on the refrigerant entering the quick-freezing module 1, the bubbles generated by the foaming module flow directly into the corresponding fish contact area along with the refrigerant.

[0061] As a preferred embodiment, the foaming module in S5 is an ultrasonic foaming device 3. The weight specification information of the catch identified by the identification module is G, or the thickness specification of the catch identified by the identification module is D. The working frequency of the ultrasonic foaming device 3 is adjusted to F according to the catch information. Since the higher the working frequency of the ultrasonic foaming device 3, the finer the bubbles produced, and the better the resistance reduction effect, heavier or thicker catches require a higher working frequency. When the catch is small and uniform in shape, such as yellow croaker, a frequency of about 40 kHz is sufficient to achieve a good freezing effect for the weight dimension, i.e., less than 350g. Alternatively, a frequency of about 40 kHz is suitable for adjusting the parameters based on the thickness dimension, such as pomfret with a thickness of less than 1.5cm. When the catch is relatively large, corresponding to the shape of yellow croaker and pomfret, a frequency of about 60 kHz is sufficient to achieve a good quick-freezing effect for catches weighing more than 850g or thicker than 6.5cm. For catches between large and small, the working frequency can be appropriately increased / decreased according to the increase in catch size. The preferred parameters described above satisfy the following conditions: When D≤1.5cm or G≤350g, F=40KHz; at this time the catch is small, and the ultrasonic foaming device 3 adopts a smaller working frequency.

[0062] When 1.5cm < D ≤ 2.5cm or 350g < G ≤ 450g, 40KHz < F ≤ 45KHz; with appropriate increases in the size of the catch, the working frequency of the ultrasonic foaming device 3 should also be appropriately increased.

[0063] When 2.5cm < D ≤ 3.5cm or 450g < G ≤ 550g, 45KHz < F ≤ 50KHz; as the size of the catch continues to increase, the working frequency of the ultrasonic foaming device 3 should be appropriately increased.

[0064] When 3.5cm < D ≤ 4.5cm or 550g < G ≤ 650g, 50KHz < F ≤ 55KHz; as the size of the catch continues to increase, the working frequency of the ultrasonic foaming device 3 should be appropriately increased.

[0065] When 4.5cm < D ≤ 5.5cm or 650g < G ≤ 750g, 55KHz < F < 60KHz; as the size of the catch continues to increase, the working frequency of the ultrasonic foaming device 3 should be appropriately increased.

[0066] When 5.5cm < D ≤ 6.5cm or 750g < G ≤ 850g, F = 60KHz; the catch is already large, and at this time the ultrasonic foaming device 3 reaches its maximum operating frequency.

[0067] When D > 6.5cm or G > 850g, F = 60kHz. For larger catches, the maximum operating frequency is used.

[0068] According to the parameters, when the catch increases uniformly, the working frequency of the ultrasonic foaming device 3 is increased uniformly accordingly, thereby obtaining a corresponding drag reduction effect to ensure a better freezing effect.

[0069] The ultrasonic foaming device 3 features a pulse adjustment system, which allows for controllable single-cycle working time and intervals. The single-cycle working time of the ultrasonic foaming device 3 is 2 seconds, and the working interval is 1 second. The ultrasonic generator does not operate continuously; instead, it uses a pulsed, intermittent mode. Compared to continuous operation, the pulsed mode is less efficient and generates bubbles intermittently. This action is similar to a wave-like effect, with the generated bubbles acting as wave crests. When these intermittent bubbles with a certain frequency act on the surface of the fish, they provide a similar resistance-reducing effect, or even further enhance the resistance-reducing effect near the fish, compared to continuous operation. This allows for better contact and heat exchange between the coolant and the fish, thereby further improving heat exchange efficiency.

[0070] To facilitate the adjustment of the cooling capacity of the quick-freezing equipment, the circulation module includes a temperature control component. This component monitors the outlet temperature of the quick-freezing module 1 and adjusts the refrigerant temperature based on the monitored outlet temperature to regulate the cooling capacity in real time. There are generally two principles for adjusting the cooling capacity: one is to increase or decrease the total flow rate of the refrigerant; by passing different amounts of refrigerant through the module, the cooling capacity can be adjusted. However, this application generally maintains a constant flow rate, so this method is not typically used. The second principle is to change the temperature of the refrigerant. For example, when more cooling capacity is needed, the temperature of the refrigerant can be lowered further during circulation, so that the refrigerant itself has a greater cooling capacity when entering the quick-freezing module 1. The same principle applies when a lower cooling capacity is needed. Through the settings of the temperature control component, the cooling capacity of the quick-freezing equipment can be flexibly adjusted as needed.

[0071] The quick-freezing module 1 includes a liquid level monitoring component, which is adapted to monitor the real-time liquid level within the quick-freezing module 1 to ensure that the refrigerant level inside the quick-freezing module 1 is always higher than the height of the fish. The liquid level monitoring component can typically be set as an automatically identifying device such as a flow meter, or it can be equipped with an observation port for manual observation of the real-time liquid level within the quick-freezing module 1.

[0072] This application also proposes a method for controlling the quick-freezing of fish catches, referring to... Figure 7 The quick-freezing equipment also includes a marking module, an electronic control module, a data transmission module, a cloud storage module, and a remote interaction module. The control method includes the following steps: a. After the catch is sorted, it is loaded onto the feeder. The identification module identifies the real-time information of the catch and quick-freezing, and the marking module processes and marks and writes the real-time information data. According to actual needs, the above-mentioned marked and written real-time information data can include various information such as the type, weight, size, fishing area, fishing time, and quick-freezing completion time of the catch. This information is marked by the marking module, and can be traced by generating QR codes, barcodes, or other traceability codes, or can be displayed in the cloud in real time for remote viewing.

[0073] b. The electronic control module transmits the real-time information data processed and written by the marking module to the cloud storage module for storage in real time through the data transmission module. In subsequent sales or warehousing processes, various information about the catch marked in S1 can be queried in the cloud to obtain specific data about the catch, so as to facilitate sales or storage.

[0074] c. Managers can view the catch information stored in the cloud storage module in real time through the remote interaction module, and adjust the quick-freezing parameters of the quick-freezing equipment in real time through the electronic control module. The control or viewing of these quick-freezing parameters is not limited to the quick-freezing process; it can also be used to obtain various information about the catch in real time during subsequent processes such as sales and storage, thereby facilitating the management and control of the catch's subsequent processes.

[0075] The quick-freezing equipment can also be equipped with a matching vacuum packaging system to vacuum-pack the quick-frozen catch. The aforementioned marking module can be printed on the vacuum packaging, which facilitates the identification of the catch and traceability during subsequent storage or sales.

[0076] In the identification module of quick-freezing equipment, gravity can be identified by weighing the fish being fed in using pressure sensors; thickness can be identified by infrared ranging equipment; the functions of identifying the type of fish and other marking information can be performed by a vision camera; and the functions of identifying the fishing area can be performed by installing positioning equipment.

[0077] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A quick-freezing method for fish catches using an immersion quick-freezing device, characterized in that, The quick-freezing equipment includes an identification module, a circulation module, and a quick-freezing module. The quick-freezing module includes a quick-freezing chamber and an impregnation rack. The quick-freezing method includes the following steps: S1. Spread the catch evenly on the soaking rack; S2. The identification module identifies and obtains the catch information, and then sends the immersion rack into the quick-freezing chamber for immersion and quick-freezing; S3. The circulation module adjusts the circulation flow rate of the freezing liquid according to the catch information, and the quick-freezing module adjusts the quick-freezing time according to the obtained catch information. S4. After quick-freezing, remove the soaking rack and transfer the quick-frozen catch out of the freezer.

2. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 1, characterized in that, The identification module described in S2 above can identify the weight specification of the catch as G; the quick-freezing time of the catch in the quick-freezing module is adjusted to T1 in S3 above, and the circulation module adjusts the circulation flow rate of the refrigerant entering and exiting the quick-freezing module to V1. The above parameters satisfy the following conditions: When G < 350g, T1 = 20min, V1 = 10.5L / min; When 350g < G ≤ 450g, 20min < T1 ≤ 27min, 10.5L / min < V1 ≤ 11.5L / min; When 450g < G ≤ 550g, 27min < T1 ≤ 33min, 11.5L / min < V1 ≤ 12.5L / min; When 550g < G ≤ 650g, 33min < T1 ≤ 37min, 12.5L / min < V1 ≤ 13.5L / min; When 650g < G ≤ 750g, 37min < T1 ≤ 43min, 13.5L / min < V1 ≤ 14.5L / min; When 750g < G ≤ 850g, 43min < T1 ≤ 47min, 14.5L / min < V1 ≤ 15.5L / min; When G > 850g, T1 = 50min, V1 = 16.5L / min.

3. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 1, characterized in that, The identification module described in S2 above can identify the thickness specification of the catch as D; the quick-freezing time of the catch in the quick-freezing module is adjusted to T2 in S3 above, and the circulation module adjusts the circulation flow rate of the refrigerant entering and exiting the quick-freezing module to V2. The above parameters satisfy the following conditions: When D < 1.5 cm, T2 = 20 min, V2 = 10.5 L / min; When 1.5cm < D ≤ 2.5cm, 20min < T2 ≤ 27min, 10.5L / min < V2 ≤ 11.5L / min; When 2.5cm < D ≤ 3.5cm, 27min < T2 ≤ 33min, 11.5L / min < V2 ≤ 12.5L / min; When 3.5cm < D ≤ 4.5cm, 33min < T2 ≤ 37min, 12.5L / min < V2 ≤ 13.5L / min; When 4.5cm < D ≤ 5.5cm, 37min < T2 ≤ 43min, 13.5L / min < V2 ≤ 14.5L / min; When 5.5cm < D ≤ 6.5cm, 43min < T2 ≤ 47min, 14.5L / min < V2 ≤ 15.5L / min; When D > 6.5 cm, T2 = 50 min, 15.5 L / min < V2 ≤ 16 L / min.

4. The quick-freezing method for fish catches using an immersion quick-freezing device as described in any one of claims 1-3, characterized in that, The quick-freezing equipment further includes a foaming module, which is located at the point where the refrigerant enters the quick-freezing module and generates bubbles within the quick-freezing equipment; the quick-freezing method further includes the following steps: S5. After step S3, the foaming module adjusts the foaming power, single foaming time and foaming interval according to the identified catch information to generate bubbles of different sizes and densities, and uses the circulation flow rate adjusted in step S3 to make the generated bubbles act on the catch.

5. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 4, characterized in that, In step S5 above, the foaming module is an ultrasonic foaming device. The weight specification information of the catch identified by the identification module is G, or the thickness specification of the catch identified by the identification module is D. The operating frequency of the ultrasonic foaming device is adjusted to F according to the catch information. The above parameters satisfy the following conditions: When D≤1.5cm or G≤350g, F=40KHz; When 1.5cm < D ≤ 2.5cm or 350g < G ≤ 450g, 40KHz < F ≤ 45KHz; When 2.5cm < D ≤ 3.5cm or 450g < G ≤ 550g, 45KHz < F ≤ 50KHz; When 3.5cm < D ≤ 4.5cm or 550g < G ≤ 650g, 50KHz < F ≤ 55KHz; When 4.5cm < D ≤ 5.5cm or 650g < G ≤ 750g, 55KHz < F < 60KHz; When 5.5cm < D ≤ 6.5cm or 750g < G ≤ 850g, F = 60KHz; When D > 6.5cm or G > 850g, F = 60KHz.

6. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 5, characterized in that, The ultrasonic foaming device has a pulse adjustment system, which enables the ultrasonic foaming device to have controllable single working time and working interval.

7. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 6, characterized in that, The ultrasonic foaming device has a single working time of 2 seconds and a working interval of 1 second.

8. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 4, characterized in that, The circulation module includes a temperature control component, which is adapted to monitor the outlet temperature of the quick-freezing module and adjust the temperature of the refrigerant according to the monitored outlet temperature to regulate the cooling capacity in real time.

9. The quick-freezing method for fish catches using an immersion quick-freezing device as described in claim 4, characterized in that, The quick-freezing module includes a liquid level monitoring component, which is adapted to monitor the real-time liquid level inside the quick-freezing module so that the level of the refrigerant inside the quick-freezing module is always higher than the height of the catch.

10. A control method, performed using the quick-freezing method and quick-freezing equipment as described in claim 1, characterized in that, The quick-freezing equipment also includes a marking module, an electronic control module, a data transmission module, a cloud storage module, and a remote interaction module. The control method includes the following steps: a. After the catch is classified, the identification module identifies the real-time information of the catch and quick-freezing, and the marking module processes and marks and writes the real-time information data. b. The electronic control module transmits the real-time information data processed and written by the marking module to the cloud storage module for storage in real time through the data transmission module. c. The manager can view the catch information stored in the cloud storage module in real time through the remote interaction module, and adjust the quick-freezing parameters of the quick-freezing equipment in real time through the electronic control module.

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