Meat food material tender freezing refrigeration refrigerator

Abstract

The utility model discloses a meat food material tender freezing refrigeration refrigerator, which has a tender freezing working mode, and comprises a tender freezing part, a refrigeration part, a refrigeration part and a refrigeration part, the cold guide plate divides the refrigeration storage cavity into air cooling chambers located on the two opposite sides of the cold guide plate and a storage chamber used for storing meat food materials in a sealed mode in the tender freezing working mode; the refrigerating component is used for providing cooling air in the tender freezing working mode; the air supply component is used for receiving the cooling air provided by the refrigeration component in a tender freezing working mode and conveying the cooling air to the air cooling chamber so as to perform convection heat exchange with the cold guide plate; and in the tender freezing working mode, the cold guide plate is cooled by the cooling air and then exchanges heat with the meat food materials in the storage chamber through the air in the closed storage chamber, so that the meat food materials are supercooled.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration systems, in particular to a meat food tender-freezing refrigeration refrigerator. Background Art

[0002] In order to improve the preservation effect of meat, the inventors have used a freezing method of supercooling meat in the known technology. Supercooling of meat and other ingredients refers to the rapid drop in the temperature of the ingredients and the breakthrough of the maximum ice crystal zone temperature of -1°C to 5°C when freezing meat and other ingredients, so that the ingredients are quickly frozen, the damage to the ingredients cells is reduced, and the preservation degree of meat and other ingredients is improved. At present, refrigerator products with meat preservation function on the market are mainly divided into air-cooled structure or direct cooling structure. Among them, although the air-cooled preservation scheme has a faster refrigeration rate, the preservation process is easy to make the meat food dry and discolored, increase its juice loss rate, and is not easy to store for a long time. In addition, the air-cooled air supply and heat exchange are uneven, which is easy to cause large temperature fluctuations in the preservation and refrigeration process, and the supercooling degree of meat is difficult to control. Although the conventional direct cooling preservation scheme can reduce the juice loss rate of meat food during storage, it has a slow refrigeration rate and a long direct freezing time, resulting in the freezing of meat may not be supercooled, resulting in uneven meat preservation effects. Summary of the invention

[0003] The purpose of the utility model is to provide a meat food tender-freezing refrigeration refrigerator with a tender-freezing working mode, which can solve at least one of the above-mentioned technical problems.

[0004] The utility model discloses a meat food tender-freezing refrigeration refrigerator in a first aspect, which has a tender-freezing working mode, comprising:

[0005] Frozen components, including:

[0006] Refrigeration storage chamber;

[0007] A cooling plate, which divides the refrigeration storage cavity into an air-cooled chamber located on opposite sides of the cooling plate and a storage chamber for airtightly storing meat ingredients in a tender-freeze working mode;

[0008] A refrigeration component, used for providing cooling air in the tender-freeze working mode;

[0009] The air supply component is used to receive the cooling air provided by the refrigeration component and transport it to the air cooling chamber in the tender-freeze working mode, so as to exchange heat with the cold conduction plate through convection. In the tender-freeze working mode, the cold conduction plate is cooled by the cooling air and then exchanges heat with the meat ingredients in the storage chamber through the air in the closed storage chamber to supercool the meat ingredients.

[0010] In some embodiments, the ratio of the surface roughness of the cooling plate and the surface of the cooling air convection heat exchange to the distance between the cooling plate and the top wall of the air cooling chamber is less than or equal to 10 -8 .

[0011] In some embodiments, along the flow direction of the cooling air, the length of the surface of the cooling plate 13 for convective heat exchange with the cooling air is less than umin·(δmax / 4.64) 2 / v 1 , and the length of the surface of the cooling plate and the cooling air convection heat exchange is greater than 2·10 5 ·v 1 / umin, where umin is the lowest wind speed of the air-cooling chamber in the tender-freezing mode, v 1 is the kinematic viscosity of the air when the air temperature is the highest set temperature of the air-cooled chamber, and δmax is the maximum set value of the thermal boundary layer thickness.

[0012] In some embodiments, δmax is 0.03136 cm.

[0013] In some embodiments, the cooling plate is an aluminum cooling plate.

[0014] In some embodiments, the distance between the cold conduction plate and the bottom wall of the storage chamber is less than ((v 2 10 8 ) / (Pr·g·β·ΔT)) 1 / 3 , where g is the acceleration of gravity, β is the volume expansion coefficient of the air in the storage room when the temperature is Tmax, Pr is the Prandtl number of the air in the storage room when the temperature is Tmax, v is the kinematic viscosity of the air in the storage room when the temperature is Tmax, ΔT is the sum of the absolute value of the initial temperature set for the storage room in the tender-freezing working mode and the absolute value of the rated maximum temperature of the meat in the tender-freezing working mode, and Tmax is the maximum set temperature of the air in the storage room during the tender-freezing working mode.

[0015] In some embodiments, it also includes a temperature sensor for detecting the room temperature of the storage chamber and a control device connected to the refrigeration component and the air supply component by signal, and the control device is configured to control the operation of the refrigeration component and the air supply component according to the detection result of the temperature sensor.

[0016] The second aspect of the utility model discloses a meat tenderizing method using any of the meat tenderizing refrigeration refrigerators, comprising:

[0017] Turning on the tender-freezing working mode of the meat tender-freezing refrigeration refrigerator;

[0018] Placing meat ingredients in the storage chamber;

[0019] The storage chamber is made airtight.

[0020] In some embodiments, the tender-freeze working mode includes: before placing the meat ingredients in the storage chamber, using the refrigeration component to provide cooling air, and using the air supply component to transport the cooling air to the air cooling chamber to perform convection heat exchange with the cold conduction plate so that the temperature of the storage chamber reaches the initial temperature set for the storage chamber in the tender-freeze working mode.

[0021] In some embodiments, the tender-freeze working mode further includes: starting timing after the storage chamber is sealed, maintaining the room temperature in the storage chamber for the initial temperature t1 set in the tender-freeze working mode storage chamber, then lowering the room temperature in the storage chamber to a second set temperature T2, maintaining the room temperature in the storage chamber at the second set temperature t2 time after the room temperature in the storage chamber drops to T2, then lowering the room temperature in the storage chamber to a third set temperature T3, maintaining the room temperature in the storage chamber at the third set temperature t3 time after the room temperature in the storage chamber drops to T3, then lowering the room temperature in the storage chamber to The fourth set temperature T4, after the room temperature in the storage room drops to T4, the room temperature in the storage room is maintained at the fourth set temperature for t4 time, and then the room temperature in the storage room is dropped to the fifth set temperature T5, after the room temperature in the storage room drops to T5, the room temperature in the storage room is maintained at the fifth set temperature for t5 time, and then the room temperature in the storage room is dropped to the sixth set temperature T6, after the room temperature in the storage room drops to T6, the room temperature in the storage room is maintained at the sixth set temperature for t6 time, and then the room temperature in the storage room is increased to the seventh set temperature T7 and maintained at the seventh set temperature T7.

[0022] In some embodiments, the initial temperature, T2, T3, T4, T5, T6 and T7 of the storage chamber in the tender-freeze working mode are set to -3°C, -4°C, -5°C, -6°C, -7°C, -18°C and -6°C respectively, wherein t1, t2, t3, t4, t5, t6 are 2 hours, 1 hour, 2 hours, 2 hours, 4 hours and 3 hours respectively.

[0023] In some embodiments, the refrigeration component includes a refrigeration cycle component and a fan, and the refrigeration cycle component includes a compressor; the tender freezing working mode also includes: real-time detection of the room temperature in the storage room, when the detected value of the room temperature in the storage room is not higher than the sum of the temperature difference of the set temperature currently to be maintained and a first threshold value, and when the room temperature in the storage room needs to be increased, shutting down the air supply to the air-cooling chamber and shutting down the compressor; when the detected value of the room temperature in the storage room is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, supplying air to the air-cooling chamber and turning on the compressor.

[0024] In some embodiments, when the detected value of the room temperature in the storage chamber is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, and the set temperature currently to be maintained is the initial temperature set for the storage chamber in the tender-freeze working mode, T2, T3, T4 or T5, the wind speed of the cooling air delivered to the air-cooling chamber is adjusted to the lowest gear wind speed umin and the power of the compressor is adjusted to the lowest gear power; when the detected value of the room temperature in the storage chamber is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, and the set temperature currently to be maintained is T6 or T7, the wind speed of the cooling air delivered to the air-cooling chamber is adjusted to a high gear wind speed greater than the lowest gear wind speed umin and the power of the compressor is adjusted to a high gear power greater than the lowest gear power.

[0025] The meat ingredient tender-frozen refrigeration refrigerator provided by the utility model realizes supercooling of the meat ingredients placed in the storage chamber through the tender-frozen components and air supply components with an air cooling chamber, a cold guide plate and a storage chamber, and can form a composite structure of air cooling and direct cooling to perform composite cooling of air cooling and direct cooling on the meat ingredients, which can not only realize rapid cooling of meat food, but also reduce the drying, discoloration and juice loss of the meat ingredients, thereby realizing the tender-frozen preservation of the meat ingredients.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structural principle of a meat tenderizing and freezing refrigerator according to an embodiment of the utility model;

[0029] Figure 2 A schematic diagram for explaining the principle of the convection heat transfer process in the air-cooling chamber of the meat food tender-frozen refrigeration refrigerator according to an embodiment of the utility model;

[0030] Figure 3 It is a schematic cross-sectional view of a meat tender-frozen refrigeration refrigerator according to another embodiment of the utility model;

[0031] Figure 4 It is a cross-sectional structural schematic diagram of a meat food tender-frozen refrigeration refrigerator according to another embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the set temperature of the storage chamber in the tender-freezing working mode of the meat tender-freezing refrigeration refrigerator according to another embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, the meat ingredient tender-frozen refrigeration refrigerator of this embodiment has a tender-frozen working mode, and the meat ingredient tender-frozen refrigeration refrigerator includes a tender-frozen component 1, a refrigeration component and an air supply component.

[0039] The tender-freeze component 1 includes a refrigeration storage chamber and a cold conduction plate 13. The cold conduction plate 13 is a good heat conductor structure, such as an aluminum plate, a copper plate, etc. As shown in the figure, the cold conduction plate 13 divides the refrigeration storage chamber into an air-cooled chamber 11 located on opposite sides of the cold conduction plate 13 and a storage chamber 12 for sealingly storing meat ingredients in the tender-freeze working mode. The outer ring of the air-cooled chamber is provided with a temperature insulation device 14, such as a temperature insulation foam. By opening the door of the storage chamber or Figure 3 and Figure 4 As shown, the storage chamber is opened by pulling the drawer out from the storage chamber to put the meat ingredient 100 into the storage chamber, and then the storage chamber is closed by returning the drawer, etc. In the tender-freezing working mode, the storage chamber space is closed and the air in the storage chamber can remain relatively static.

[0040] The refrigeration component is used to provide cooling air in the tender-freeze working mode. For example, the refrigeration component includes a refrigeration cycle component and a fan. The refrigeration cycle component includes an evaporator, a compressor, an expansion valve and a radiator. The fan blows air to the evaporator to form cooling air or draws air from the evaporation to form cooling air.

[0041] The air supply component is used to receive the cooling air provided by the refrigeration component in the tender-freeze working mode and transport it to the air-cooling chamber 11 for convection heat exchange with the cold conduction plate 13. In the tender-freeze working mode, the cold conduction plate 13 is cooled by the cooling air and then exchanges heat with the meat ingredients in the storage chamber 12 through the air in the closed storage chamber 12 to supercool the meat ingredients. In the tender-freeze working mode, the air supply component includes an air supply duct, which receives the cooling air provided by the refrigeration component and then transports it to the air-cooling chamber, forming convection heat exchange with the cold conduction plate, and can quickly cool the cold conduction plate. The cold conduction plate with a good heat conductor structure can quickly directly cool the meat ingredients through the air in the storage chamber 12, thereby realizing a composite freezing method of air cooling and direct cooling for the meat ingredients. When the meat ingredients are supercooled and frozen, the meat ingredients can also be quickly supercooled to tender-freeze and preserve the meat ingredients. At the same time, the cold conduction plate can also quickly make the temperature uniform, further improving the uniform supercooling and freezing effect of the meat ingredients.

[0042] The meat food tender-freezing refrigeration refrigerator of the present embodiment realizes supercooling of the meat food placed in the storage chamber 12 through the tender-freezing component 1 and the air supply component with the air-cooling chamber 11, the cold guide plate 13 and the storage chamber 12, and can form a composite structure of air-cooling and direct-cooling to perform composite cooling of the meat food with air-cooling and direct-cooling, which can not only realize the rapid cooling of meat food, but also reduce the wind-drying discoloration and juice loss of the meat food, and realize the tender-freezing and fresh-keeping of the meat food. The meat food tender-freezing refrigeration refrigerator of the present embodiment is not limited to tender-freezing only meat food, but can also tender-freeze some melon and fruit food that can be supercooled.

[0043] In some embodiments, in the tender freezing working mode, when the cooling air and the cooling plate are subjected to convective heat exchange, the flow of the cooling air on the cooling plate in the cooling chamber has a turbulent state. At the same time, as shown in the figure, the ratio of the surface roughness K of the surface of the cooling plate 13 and the cooling air convective heat exchange to the distance d between the cooling plate 13 and the top wall of the cooling chamber 11 is less than or equal to 10 -8 . That is, K / d is less than or equal to 10 -8 In this embodiment, when the guide plate 13 performs convective heat exchange with the cooling air in a turbulent state, a smooth turbulent flow area can be formed, and the heat exchange effect between the cooling air and the guide plate is outstanding, and the cooling air can quickly cool the guide plate.

[0044] In some embodiments, along the flow direction of the cooling air, the length X of the surface of the cooling plate 13 for convective heat exchange with the cooling air is less than umin·(δmax / 4.64) 2 / v 1 , and the length X of the surface of the cooling plate and the cooling air convection heat exchange is greater than 2·10 5 ·v 1 / umin, where umin is the lowest wind speed of the air-cooling chamber in the tender-freezing mode, v 1is the kinematic viscosity of the air when the temperature is the highest set temperature of the air cooling chamber, and δmax is the maximum set value of the thickness of the thermal boundary layer δt. In this application, the symbol "·" represents multiplication. The air cooling chamber is used to refrigerate the cold conduction plate. When performing tender freezing, the meat ingredients in the storage chamber need to be frozen. The highest set temperature of the cold conduction chamber in the tender freezing working mode can be 0°C. The wind speed in the cold conduction chamber of the meat ingredient tender freezing refrigerator of this embodiment has multiple gears, among which the wind speed is the smallest when the lowest gear wind speed is running. The determination of the lowest gear wind speed can be determined based on experience or according to the wind speed of the variable frequency fan in the lowest power working state to maintain stable operation. For example, umin can be determined as 0.25m / s, and the highest gear wind speed is 1m / s. The length X of the surface of the cold conduction plate and the cooling air convection heat exchange in this embodiment is greater than 2·10 5 ·v 1 / umin, so that when the cooling air flows on the cooling plate at a speed greater than umin, the Reynolds number of at least some sections is greater than 2·10 5， Ensure that in the tender freezing working mode, the flow of cooling air on the cooling plate can cross the laminar boundary layer during the convection heat exchange between the cooling air and the cooling plate, and has a turbulent state. In the turbulent area, the cooling air and the cooling plate have a good convection heat exchange effect. The length X of the surface of the cooling plate 13 and the cooling air convection heat exchange in this embodiment is less than umin·(δmax / 4.64) 2 / v 1 , which can ensure that in the tender-freezing working mode, when the cooling air flows on the turbulent section of the cold plate at a wind speed of more than umin during the convective heat exchange between the cooling air and the cold plate, the thickness of the thermal boundary layer is less than δmax, which can ensure that the cooling air and the cold plate have a further good convective heat exchange effect in the turbulent area. In some embodiments, δmax is 0.03136cm. Thus, in the tender-freezing working state, when the cooling air flows on the turbulent section of the cold plate at a wind speed of more than umin during the convective heat exchange between the cooling air and the cold plate, the thickness of the thermal boundary layer δt is less than 0.03136cm, and the convective heat exchange effect between the cooling air and the cold plate is high.

[0045] In some embodiments, the cooling plate 13 is an aluminum cooling plate. The aluminum cooling plate can quickly transfer the low temperature of the air cooling chamber to the storage chamber to directly cool the meat ingredients, and can also evenly distribute the coldness on the aluminum cooling plate, making the heat transfer to the storage chamber more uniform and stable.

[0046] In some embodiments, the distance L between the cold conducting plate 13 and the bottom wall of the storage chamber 12 is less than ((v 2 10 8 ) / (Pr·g·β·ΔT)) 1 / 3, where g is the acceleration of gravity, β is the volume expansion coefficient of the air in the storage chamber 12 when the temperature is Tmax, Pr is the Prandtl number of the air in the storage chamber 12 when the temperature is Tmax, v is the kinematic viscosity of the air in the storage chamber 12 when the temperature is Tmax, ΔT is the sum of the absolute value of the initial temperature set for the storage chamber in the tender-freeze working mode and the absolute value of the rated maximum temperature of the meat in the tender-freeze working mode, and Tmax is the maximum set temperature of the air in the storage chamber 12 during the tender-freeze working mode. The meat tender-freeze refrigeration refrigerator of this embodiment will also set a rated maximum temperature for meat according to the power of the refrigerator, etc. Only meat ingredients below this temperature can be put into the refrigerator for tender-freezing. For example, the rated maximum temperature of meat can be set to the normal room temperature 20°C plus a temperature, such as adding 20°C, so that the rated maximum temperature of meat is set to 40°C. In the tender-freeze working mode, multiple low temperatures will be set for the storage chamber to cool down the meat ingredients and quickly supercool them. The initial temperature set for the storage chamber in the tender-freeze working mode is the starting temperature of the storage chamber when the tender-freeze working mode starts. When the tender-freeze working mode starts, the storage chamber is first adjusted to the initial temperature set for the storage chamber in the tender-freeze working mode, and then the meat ingredients are put in for tender-freezing. Figure 5 In the embodiment shown, Tmax is -3°C, and the initial temperature of the storage chamber in the tender-freeze working mode is set to -3°C. In this embodiment, the distance L between the cold guide plate 13 and the bottom wall of the storage chamber 12 is less than ((v 2 10 8 ) / (Pr·g·β·ΔT)) 1 / 3 During the entire process of the tender-freezing working mode, the air in the storage chamber, which serves as the heat exchange medium, can achieve laminar steady-state heat exchange with the meat ingredients, further reducing the air-drying effect of the meat ingredients, reducing the temperature impact on the meat ingredients, making the direct cooling of the meat ingredients in the storage chamber more stable and uniform, and improving the tender-freezing effect of the meat ingredients.

[0047] In some embodiments, the meat food tender-frozen refrigerator further includes a temperature sensor 15 for detecting the room temperature of the storage chamber 12 and a control device connected to the refrigeration component and the air supply component by signal, and the control device is configured to control the operation of the refrigeration component and the air supply component according to the detection result of the temperature sensor 15. For example, the gear position of the cooling air sent into the air-cooling chamber can be adjusted, thereby adjusting the wind speed. This embodiment can more accurately and effectively adjust the operation of the refrigeration component and the air supply component according to the temperature detection.

[0048] In some embodiments, a method for tenderizing meat ingredients using the above-mentioned meat ingredient tenderizing refrigeration refrigerator is also disclosed, comprising:

[0049] Turn on the tender freezing working mode of the meat tender freezing refrigerator;

[0050] Placing meat ingredients in the storage chamber 12;

[0051] The storage chamber 12 is made airtight.

[0052] The meat tender-frozen refrigeration refrigerator of the present embodiment realizes supercooling of the meat ingredients placed in the storage chamber 12 by means of the tender-frozen component 1 and the air supply component with the air-cooling chamber 11, the cold guide plate 13 and the storage chamber 12, and can form a composite structure of air cooling and direct cooling to perform composite cooling of air cooling and direct cooling on the meat ingredients, which can not only realize rapid cooling of meat food, but also reduce the drying, discoloration and juice loss of the meat ingredients, thereby realizing the tender-frozen preservation of the meat ingredients.

[0053] In some embodiments, the tender-freeze working mode includes: before placing the meat food in the storage chamber 12, using the refrigeration component to provide cooling air, using the air supply component to deliver cooling air to the air cooling chamber 11 for convection heat exchange with the cold guide plate 13 so that the temperature of the storage chamber 12 reaches the initial temperature set for the storage chamber in the tender-freeze working mode. Setting an initial temperature for the storage chamber in the tender-freeze working mode can make the tender-freeze process of the meat food proceed in stages, firstly making the meat food cool steadily to near zero degrees, and then making the temperature of the meat food drop rapidly through the maximum ice crystal zone temperature, achieving rapid supercooling, ensuring the supercooling effect, and further improving the tender-freeze preservation effect of the meat food.

[0054] In some embodiments, the tender-freeze working mode further includes: starting the timing after the storage chamber 12 is sealed, maintaining the room temperature in the storage chamber 12 for the initial temperature t1 set in the tender-freeze working mode storage chamber, and then lowering the room temperature in the storage chamber 12 to the second set temperature T2, and after the room temperature in the storage chamber 12 drops to T2, maintaining the room temperature in the storage chamber 12 at the second set temperature t2 time, and then lowering the room temperature in the storage chamber 12 to the third set temperature T3, and after the room temperature in the storage chamber 12 drops to T3, maintaining the room temperature in the storage chamber 12 at the third set temperature t3 time, and then lowering the room temperature in the storage chamber 12 to the third set temperature T4. The fourth set temperature T4, after the room temperature in the storage chamber 12 drops to T4, the room temperature in the storage chamber 12 is maintained at the fourth set temperature t4 time, then the room temperature in the storage chamber 12 is dropped to the fifth set temperature T5, after the room temperature in the storage chamber 12 drops to T5, the room temperature in the storage chamber 12 is maintained at the fifth set temperature t5 time, then the room temperature in the storage chamber 12 is dropped to the sixth set temperature T6, after the room temperature in the storage chamber 12 drops to T6, the room temperature in the storage chamber 12 is maintained at the sixth set temperature t6 time, then the room temperature in the storage chamber 12 is raised to the seventh set temperature T7 and maintained at the seventh set temperature T7. In this embodiment, the rapid supercooling of the meat ingredients is achieved by setting the temperature T6, the initial temperature of the storage chamber in the tender-freeze working mode, the setting of the temperatures T2, T3, T4, and T5 make the temperature of the meat ingredients drop steadily to near zero, then the meat ingredients are rapidly supercooled, and the meat ingredients are steadily cooled before rapid supercooling, which reduces the influence of temperature fluctuations on the meat ingredients, improves the preservation effect, and also helps to make the supercooling process of the meat ingredients faster, more accurate and effective.

[0055] In some embodiments, the initial temperature, T2, T3, T4, T5, T6 and T7 of the storage chamber in the tender-freeze working mode are set to -3°C, -4°C, -5°C, -6°C, -7°C, -18°C and -6°C respectively, wherein t1, t2, t3, t4, t5, t6 are 2 hours, 1 hour, 2 hours, 2 hours, 4 hours and 3 hours respectively. In the present embodiment, the initial temperature, T2, T3, T4 and T5 temperatures of the storage chamber in the tender-freeze working mode are set so that the temperature of the meat ingredients drops steadily to close to -1°C, close to the temperature range of the maximum ice crystal zone. This stage is a slow cooling zone, which can reduce the temperature difference with the meat in a gradient manner, and then quickly supercool the meat ingredients to increase the supercooling depth of the meat. The meat ingredients are cooled steadily before rapid supercooling, which reduces the impact of temperature fluctuations on the meat ingredients and improves the preservation effect. The rapid supercooling of the meat ingredients is achieved by setting the T6 temperature. By increasing the temperature stress, increasing the latent heat and improving the heat exchange efficiency, the meat can quickly form fine micro-ice crystals, reducing the damage to the meat cells and also helping to make the supercooling process of the meat ingredients faster, more accurate and more effective.

[0056] In some embodiments, the refrigeration component includes a refrigeration cycle component and a fan, and the refrigeration cycle component includes a compressor; the tender freezing working mode also includes: real-time detection of the room temperature in the storage chamber 12, when the detected value of the room temperature in the storage chamber 12 is not higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, and when the room temperature in the storage chamber 12 needs to be increased, the air supply to the air-cooling chamber 11 is turned off and the compressor is turned off; when the detected value of the room temperature in the storage chamber 12 is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, air is supplied to the air-cooling chamber 11 and the compressor is turned on.

[0057] In some embodiments, when the detected value of the room temperature in the storage chamber 12 is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, and the set temperature currently to be maintained is the initial temperature set for the storage chamber in the tender-frozen working mode, T2, T3, T4 or T5, the wind speed of the cooling air delivered to the air-cooling chamber 11 is adjusted to the lowest gear wind speed umin and the power of the compressor is adjusted to the lowest gear power; when the detected value of the room temperature in the storage chamber 12 is higher than the sum of the temperature difference of the set temperature currently to be maintained and the first threshold value, and the set temperature currently to be maintained is T6 or T7, the wind speed of the cooling air delivered to the air-cooling chamber 11 is adjusted to a high gear wind speed greater than the lowest gear wind speed umin and the power of the compressor is adjusted to a high gear power greater than the lowest gear power, and the high gear wind speed is a wind speed between the lowest gear wind speed and the highest gear wind speed.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A meat tenderizing and freezing refrigerator, characterized in that: It has tender freezing working mode, including: Tender frozen components (1), including: Refrigeration storage chamber; A cooling plate (13) is provided to divide the refrigeration storage cavity into an air cooling chamber (11) located on opposite sides of the cooling plate (13) and a storage chamber (12) for hermetically storing meat ingredients in a tender-freeze working mode; A refrigeration component, used for providing cooling air in the tender-freeze working mode; The air supply component is used to receive the cooling air provided by the refrigeration component and convey it to the air cooling chamber (11) in the tender-freeze working mode, so as to exchange heat with the cold conduction plate (13) by convection. In the tender-freeze working mode, the cold conduction plate (13) is cooled by the cooling air and then exchanges heat with the meat food in the storage chamber (12) through the air in the closed storage chamber (12) to supercool the meat food.

2. The meat tender freezing refrigerator according to claim 1, characterized in that: The ratio of the surface roughness of the surface of the cooling plate (13) and the surface of the cooling air convection heat exchange to the distance between the cooling plate (13) and the top wall of the air cooling chamber (11) is less than or equal to 10 -8 .

3. The meat tender freezing refrigerator according to claim 1 or 2, characterized in that: Along the flow direction of the cooling air, the length of the surface of the cooling plate (13) for convective heat exchange with the cooling air is less than umin·(δmax / 4.64) 2 / v1, and the length of the surface of the cooling plate (13) and the cooling air convection heat exchange surface is greater than 2·10 5 v1 / umin, wherein umin is the lowest gear wind speed of the air cooling chamber (11) in the tender freezing working mode, v1 is the kinematic viscosity of the air when the temperature is the highest set temperature of the air cooling chamber (11), and δmax is the maximum set value of the thermal boundary layer thickness.

4. The meat tender freezing refrigerator according to claim 3, characterized in that: δmax is 0.03136cm.

5. The meat tender freezing refrigerator according to claim 1 or 2, characterized in that: The cooling plate (13) is an aluminum cooling plate.

6. The meat tender freezing refrigerator according to claim 1 or 2, characterized in that: The distance between the cold conduction plate (13) and the bottom wall of the storage chamber (12) is less than ((v 2 10 8 ) / (P r g β ΔT)) 1 / 3 , wherein g is the acceleration due to gravity, β is the volume expansion coefficient of the air in the storage chamber (12) when the temperature is Tmax, Pr is the Prandtl number of the air in the storage chamber (12) when the temperature is Tmax, v is the kinematic viscosity of the air in the storage chamber (12) when the temperature is Tmax, ΔT is the sum of the absolute value of the initial temperature set for the storage chamber in the tender-freeze working mode and the absolute value of the rated maximum temperature of the meat in the tender-freeze working mode, and Tmax is the maximum set temperature of the air in the storage chamber (12) during the tender-freeze working mode.

7. The meat tender freezing refrigerator according to claim 1 or 2, characterized in that: It also includes a temperature sensor (15) for detecting the room temperature of the storage chamber (12) and a control device connected to the refrigeration component and the air supply component by signal, and the control device is configured to control the operation of the refrigeration component and the air supply component according to the detection result of the temperature sensor (15).

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