Ice making device capable of preparing ice sample similar to polar ice and ice making method

Abstract

The invention provides an ice making device capable of preparing an ice sample similar to polar ice and an ice making method, and belongs to the field of thermodynamics. The problem that no equipment for manufacturing the polar ice sample exists at present is solved. The ice making device comprises an ice making box, a refrigerating system and a temperature adjusting system, wherein an ice making cavity is formed in an inner box of the ice making box; an evaporator of the refrigerating system is positioned above the ice-making cavity; in the temperature adjusting system, a temperature measuring rod is provided with a plurality of temperature probe points at intervals in the extending direction of the temperature measuring rod, the temperature measuring rod is arranged in an ice making cavity and extends in the depth direction of the ice making cavity, and a plurality of side wall temperature measuring structures are arranged on the outer wall of an inner box of the ice making box at intervals in the depth direction of the ice making cavity. The side wall heating structures are arranged on the outer wall of the ice making box inner box at intervals in the depth direction of the ice making cavity. The plurality of side wall temperature measuring structures and the plurality of temperature probe points are located on the same horizontal plane in a one-to-one correspondence mode. The device can be used for preparing flat ice and overlapped ice which are similar to polar ice and are flat up and down.

Description

Technical Field

[0001] The invention belongs to the technical field of thermodynamics, and in particular relates to an ice-making device and an ice-making method capable of preparing ice samples similar to polar ice. Background Art

[0002] In recent years, with the development of science and technology and the increasing attention paid to polar resources, research in the field of polar development has also gradually gained attention. Research in areas such as icebreakers needed for polar development cannot be separated from mechanical experiments on polar ice. To carry out such experiments, polar ice samples are required. Since my country is not a country within the polar circle, the cost of collecting polar ice samples is too high. Therefore, the development of an ice-making device that can simulate the actual growth state of ice is of great significance to this field.

[0003] In most cases of ice growth in polar regions, the ice only exchanges heat with the air above, the ice grows from top to bottom, and the bottom is relatively flat. In the current conventional ice-making devices, most of them do not restrict the growth direction of the ice sample, which will cause the growth of the ice sample in the ice-making device to be inconsistent with the growth of the ice sample in the natural state of the polar region. For example, the ice sample produced by the conventional ice-making device will not produce granular ice, transition layer, and columnar ice structure from top to bottom. In addition, when the conventional ice-making device makes ice, the ice sample at the side wall solidifies first, and there will be a depression at the bottom of the ice sample, making it impossible to produce an ice sample with a flat bottom surface. This type of ice sample is not suitable for the study of ice mechanics in polar environments.

[0004] Therefore, there is still a lack of specialized ice-making equipment for producing polar ice samples. Summary of the invention

[0005] In view of this, in order to solve the problem that there is still a lack of specialized ice-making equipment for making polar ice samples, the present invention proposes an ice-making device and an ice-making method that can prepare ice samples similar to polar ice.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An ice making device capable of preparing ice samples similar to polar ice, comprising: An ice making ice box, the ice making ice box comprising an ice making ice box shell and an ice making ice box inner box, the ice making ice box inner box is located inside the ice making ice box shell, and the ice making ice box inner box is provided with an ice making cavity; A refrigeration system, comprising an evaporator, the evaporator being disposed in the ice making ice box housing and located above the ice making chamber; The temperature regulating system comprises a temperature measuring rod, a plurality of side wall temperature measuring structures and a plurality of side wall heating structures, wherein the temperature measuring rod is provided with a plurality of temperature detection points at intervals along its extension direction, the temperature measuring rod is arranged in the ice making cavity and extends along the depth direction of the ice making cavity, the plurality of side wall temperature measuring structures are provided at intervals along the depth direction of the ice making cavity on the outer wall of the inner box of the ice making refrigerator, and the plurality of side wall heating structures are provided at intervals along the depth direction of the ice making cavity on the outer wall of the inner box of the ice making refrigerator; the plurality of side wall temperature measuring structures and the plurality of temperature detection points are located on the same horizontal plane in a one-to-one correspondence.

[0007] As a preferred solution of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the side wall heating structure includes heating wires and thermally conductive gaskets, the thermally conductive gaskets are fixedly arranged along the four sides of the inner box of the ice-making refrigerator, and the heating wires are fixedly arranged on the thermally conductive gaskets.

[0008] As a preferred embodiment of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the refrigeration system also includes a compressor, a condenser and a throttle valve, the output end of the evaporator is connected to the input end of the compressor, the output end of the compressor is connected to the input end of the condenser, the output end of the condenser is connected to the input end of the throttle valve, and the output end of the throttle valve is connected to the input end of the evaporator.

[0009] As a preferred embodiment of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the outer shell of the ice-making refrigerator includes a box body, a box cover and a locking structure. The box cover is rotatably arranged on the box body and has an open position and a closed position. The locking structure can lock the box cover in the closed position. The evaporator is fixedly arranged inside the box cover.

[0010] As a preferred solution of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, a heat-insulating filling material is arranged between the box body and the inner box of the ice-making refrigerator.

[0011] As a preferred solution of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the ice-making device capable of preparing ice samples similar to polar ice further comprises a plurality of fans, and the plurality of fans are arranged at intervals on the side wall of the box cover.

[0012] As a preferred embodiment of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the ice-making device capable of preparing ice samples similar to polar ice also includes a wind shield, which is fixed to the box body, the fan and the evaporator are located on one side of the wind shield, and the ice-making chamber is located on the other side of the wind shield.

[0013] As a preferred embodiment of the ice-making device capable of preparing ice samples similar to polar ice, the ice-making device capable of preparing ice samples similar to polar ice also includes a connecting structure, and the temperature measuring rod is detachably connected to the wind shield through the connecting structure.

[0014] As a preferred embodiment of the above-mentioned ice-making device capable of preparing ice samples similar to polar ice, the ice-making device capable of preparing ice samples similar to polar ice also includes a lifting structure, the lifting structure includes a tray and a driving member, the tray is located in the ice-making chamber, and the driving member can drive the tray to move along the depth direction of the ice-making chamber.

[0015] The present invention also provides an ice-making method capable of preparing ice samples similar to polar ice, and the ice-making device capable of preparing ice samples similar to polar ice comprises: S1: inject water into the ice making chamber and prepare the brine according to the required salinity of the ice sample; S2: Start the refrigeration system to cool the brine. When the temperature of the brine drops to the critical value of solidification, repeat the spray seeding operation until ice flowers appear on the entire water surface; S3: measuring the temperature of the center of the ice-making chamber through multiple temperature probes of the temperature measuring rod and returning the center temperature data; S4: measuring the temperature around the ice-making chamber through multiple side wall temperature measurement structures and transmitting the surrounding temperature data back; S5: determining the heating positions and heating temperatures of the multiple side wall heating structures according to the center temperature data and the surrounding temperature data, so that the center temperature and the surrounding temperature on the same horizontal plane are equal, thereby preparing an ice sample with a flat bottom; S6: judging whether the ice sample growth thickness reaches the required thickness according to the center temperature data and the surrounding temperature data; If yes, proceed to S7; If not, return to S5; S7: Turn off the refrigeration system.

[0016] Compared with the prior art, the ice-making device and ice-making method provided by the present invention, which can prepare ice samples similar to polar ice, have the following beneficial effects: The present invention provides an ice-making device and an ice-making method capable of preparing ice samples similar to polar ice. In the ice-making device capable of preparing ice samples similar to polar ice, a refrigeration system is used to provide a low-temperature environment for an ice-making chamber. Since polar ice similar to the natural environment needs to be prepared, an evaporator is located above the ice-making chamber, so that the brine in the ice-making chamber begins to freeze from top to bottom. The central temperature data and the surrounding temperature data measured by the side wall temperature measurement structure are obtained by measuring the temperature probe points on the temperature measuring rod, and the central temperature and surrounding temperature of each horizontal plane in the depth direction of the ice-making chamber can be known. The surroundings of the ice-making chamber are heated by the side wall heating structure to keep the central temperature and the surrounding temperature the same, which can prevent the surroundings from freezing first and causing the center of the ice sample to sag, thereby preparing a flat ice sample with a flat bottom and growing from top to bottom, and the ice crystal posture and stratification are similar to polar sampling. It is also possible to simulate the temperature changes of the four seasons by adjusting the refrigeration system and the temperature adjustment system, so as to prepare overlapping ice. The ice-making device capable of preparing ice samples similar to polar ice can prepare flat ice and overlapping ice that are flat on top and bottom and similar to polar ice, and can be used as an object for experiments related to ice mechanics in the polar region. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of an ice-making device capable of preparing ice samples similar to polar ice provided by a specific embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of an ice-making device capable of preparing ice samples similar to polar ice provided by a specific embodiment of the present invention; Figure 3 It is a partial structural cross-sectional view of an ice-making device capable of preparing ice samples similar to polar ice, provided by a specific embodiment of the present invention.

[0018] In the figure: 1. Evaporator; 2. Compressor; 3. Condenser; 4. Fan; 5. Wind shield; 6. Temperature measuring rod; 61. Temperature probe point; 7. Side wall temperature measurement structure; 8. Thermal pad; 9. Heating wire; 10. Tray; 11. Box body; 12. Box cover; 13. Locking structure; 14. Refrigerator inner box. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0023] See also Figure 1-3 The present embodiment is described. The present invention provides an ice-making device and an ice-making method capable of preparing ice samples similar to polar ice. The ice-making device capable of preparing ice samples similar to polar ice comprises a refrigerator, a refrigeration system and a temperature adjustment system. The refrigerator comprises a refrigerator shell and a refrigerator inner box 14. The refrigerator inner box 14 is located inside the refrigerator shell and is provided with an ice-making cavity. The refrigeration system comprises an evaporator 1. The evaporator 1 is arranged in the refrigerator shell and is located above the ice-making cavity. The temperature adjustment system comprises a temperature measuring rod 6, a plurality of side wall temperature measuring structures 7 and a plurality of side wall heating structures. The temperature measuring rod 6 is provided with a plurality of temperature detection points 61 at intervals along its extension direction. The temperature measuring rod 6 is arranged in the ice-making cavity and extends along the depth direction of the ice-making cavity. The plurality of side wall temperature measurement structures 7 are arranged at intervals on the outer wall of the refrigerator inner box 14 along the depth direction of the ice-making cavity. The plurality of side wall heating structures are arranged at intervals on the outer wall of the refrigerator inner box 14 along the depth direction of the ice-making cavity. The plurality of side wall temperature measurement structures 7 are arranged at intervals on the outer wall of the refrigerator inner box 14 along the depth direction of the ice-making cavity. The plurality of side wall temperature measurement structures 7 are arranged at intervals on the outer wall of the refrigerator inner box 14 along the depth direction of the ice-making cavity. The plurality of side wall temperature measurement structures 7 are located on the same horizontal plane in a one-to-one correspondence with the plurality of temperature detection points 61.

[0024] In the ice-making device capable of preparing ice samples similar to polar ice, the refrigeration system is used to provide a low-temperature environment for the ice-making chamber. Since polar ice similar to the natural environment needs to be prepared, the evaporator 1 is located above the ice-making chamber, so that the brine in the ice-making chamber starts to freeze from top to bottom. The central temperature data and the surrounding temperature data measured by the side wall temperature measurement structure 7 are measured by the temperature probe point 61 on the temperature measuring rod 6, and the central temperature and surrounding temperature of each horizontal plane in the depth direction of the ice-making chamber can be known. The surroundings of the ice-making chamber are heated by the side wall heating structure to keep the central temperature and the surrounding temperature the same, which can prevent the surroundings from freezing first and causing the center of the ice sample to sag, so that a flat ice sample with a flat bottom and growing from top to bottom can be prepared, and the ice crystal posture and stratification are similar to polar sampling. It is also possible to simulate the temperature changes in the four seasons by adjusting the refrigeration system and the temperature adjustment system to prepare overlapping ice. The ice-making device capable of preparing ice samples similar to polar ice can prepare flat ice and overlapping ice that are flat on top and bottom similar to polar ice, and can be used as an object for experiments related to ice mechanics in the polar field.

[0025] It can be understood that the spacing distances between the multiple side wall temperature measurement structures 7 are the same, and the spacing distances between the multiple temperature detection points 61 of the temperature measuring rod 6 are the same.

[0026] Optionally, the side wall heating structure includes a heating wire 9 and a heat conductive pad 8, the heat conductive pad 8 is fixedly arranged along the four sides of the ice making inner box 14, and the heating wire 9 is fixedly arranged on the heat conductive pad 8. It is understandable that the heat conductive pad 8 is wound around the circumference of the ice making inner box 14, and the heating wire 9 is embedded in the middle of the heat conductive pad 8. The same horizontal surface in the ice making chamber can be heated. The side wall heating structure can make the bottom of the ice sample flat, and the ice sample can be slightly heated when it is taken out, so as to facilitate the separation of the ice sample from the inner wall of the ice making chamber.

[0027] Optionally, the refrigeration system further includes a compressor 2, a condenser 3 and a throttle valve, the output end of the evaporator 1 is connected to the input end of the compressor 2, the output end of the compressor 2 is connected to the input end of the condenser 3, the output end of the condenser 3 is communicated with the input end of the throttle valve, and the output end of the throttle valve is connected to the input end of the evaporator 1. The refrigerant evaporates in the evaporator 1 and absorbs heat, the refrigerant gas is compressed by the compressor 2, the temperature and pressure increase, the high-temperature and high-pressure refrigerant gas releases heat in the condenser 3 and liquefies into liquid, the liquid refrigerant is throttled by the throttle valve, the pressure and temperature decrease, and the low-temperature and low-pressure refrigerant gas enters the evaporator 1 again to absorb heat, completing the cycle.

[0028] Optionally, the ice making ice box housing includes a box body 11, a box cover 12 and a locking structure 13. The box cover 12 is rotatably arranged on the box body 11 and has an open position and a closed position. The locking structure 13 can lock the box cover 12 in the closed position, and the evaporator 1 is fixedly arranged inside the box cover 12. When the box cover 12 is in the closed position, the box cover 12 and the box body 11 are tightly closed, and the ice making ice box housing is closed. When the box cover 12 is in the open position, water can be injected into the ice making chamber, etc.

[0029] Optionally, a heat-insulating filling material is provided between the box body 11 and the refrigerator inner box 14. The heat-insulating filling material is selected from a relatively dense material, which can not only support the inner box of the refrigerator, but also play a role in heat insulation and heat preservation. Optionally, the ice-making device capable of preparing ice samples similar to polar ice also includes a plurality of fans 4, and the plurality of fans 4 are arranged at intervals on the side wall of the box cover 12. The fan 4 is directly opposite to the evaporator 1, and the fan 4 is used to assist the evaporator 1 in cooling, and has the function of inhibiting frosting of the evaporator 1 and enhancing the cooling effect.

[0030] Optionally, the ice-making device capable of preparing ice samples similar to polar ice further comprises a wind shield 5, which is fixedly arranged on the housing 11, the fan 4 and the evaporator 1 are located on one side of the wind shield 5, and the ice-making chamber is located on the other side of the wind shield 5. The size of the wind shield 5 is slightly larger than the size of the ice-making chamber, and can cover the opening of the ice-making chamber. The wind shield 5 is used to prevent the fan 4 from blowing the salt water in the ice-making chamber and causing the surface of the ice sample to be uneven. It is understandable that the wind shield 5 can prevent the wind from the fan 4 from generating convection in the ice-making chamber, affecting the flatness of the surface of the ice sample. In this embodiment, dense through holes are provided on the wind shield 5. It will not hinder the cooling of the ice-making chamber by the refrigeration system.

[0031] Optionally, the box cover 12 can be flipped at an angle slightly greater than 90 degrees to reduce the torque on the connecting axis between the box cover 12 and the box body 11 and ensure that there is enough space to take out the wind shield 5.

[0032] Optionally, the ice making device capable of preparing ice samples similar to polar ice further comprises a connection structure, and the temperature measuring rod 6 is detachably connected to the wind shield 5 through the connection structure. It is understandable that when the ice sample needs to be taken out, the temperature measuring rod 6 is first separated from the wind shield 5 through the connection structure, and then the wind shield 5 is removed from the ice making ice box. At this time, the temperature measuring rod 6 is still in the ice sample, and the temperature measuring rod 6 and the ice sample are taken out together.

[0033] It can be understood that the temperature measuring rod 6 is located in the middle of the ice making chamber, and the temperature measuring rod 6 can be connected to the middle of the wind shield 5.

[0034] Optionally, the ice-making device capable of preparing ice samples similar to polar ice further comprises a lifting structure, the lifting structure comprising a tray 10 and a driving member, the tray 10 is located in the ice-making chamber, and the driving member can drive the tray 10 to move along the depth direction of the ice-making chamber. The driving member is a motor, and the output end of the motor is transmission-connected to the tray 10. In this embodiment, the motor drives the tray 10 to move in a vertical direction, so that the tray 10 can push out the ice sample, making it convenient to take out the ice sample. It is understandable that a sealing structure is provided to seal the motor.

[0035] Optionally, a supporting structure is provided below the refrigerator inner box 14 for supporting the refrigerator inner box 14 .

[0036] Optionally, the side wall temperature measurement structure 7 is a PT100 thermistor sensor with an accuracy of 0.1°C. Since the freezing point of salt water is relatively sensitive to salinity, a temperature sensor with high measurement accuracy is selected.

[0037] The present invention also provides an ice-making method capable of preparing ice samples similar to polar ice, and the ice-making device capable of preparing ice samples similar to polar ice comprises: S1: inject water into the ice making chamber and prepare the brine according to the required salinity of the ice sample; S2: Start the refrigeration system to cool the brine. When the temperature of the brine drops to the critical value of solidification, repeat the spray seeding operation until ice flowers appear on the entire water surface; S3: measuring the temperature of the center of the ice-making chamber through the multiple temperature detection points 61 of the temperature measuring rod 6 and returning the center temperature data; S4: measuring the temperature around the ice-making chamber through multiple side wall temperature measurement structures 7 and transmitting the surrounding temperature data back; S5: determining the heating positions and heating temperatures of the multiple side wall heating structures according to the center temperature data and the surrounding temperature data, so that the center temperature and the surrounding temperature on the same horizontal plane are equal, thereby preparing an ice sample with a flat bottom; S6: judging whether the ice sample growth thickness reaches the required thickness according to the center temperature data and the surrounding temperature data; If yes, proceed to S7; If not, return to S5; S7: Turn off the refrigeration system.

[0038] Specific workflow: water is poured into the ice-making chamber, and the brine is adjusted according to the required salinity of the ice sample, and then the refrigeration system is started. After the brine temperature drops to the critical value of solidification, the ice-making chamber is opened to repeat the spray crystallization operation until ice flowers appear on the entire water surface of the ice-making chamber, and then the temperature measuring rod 6 is connected to the wind shield 5, and the wind shield 5 is installed on the ice-making chamber. The temperature adjustment system is turned on, and the temperature of the side wall is adjusted step by step through the temperature data sent back by the temperature probe point 61 of the temperature measuring rod 6 and the side wall temperature measurement structure 7 to ensure that the ice sample only grows from top to bottom during the growth process, and there will be no problem of freezing around first and causing the middle to be concave at the same horizontal plane, so that an ice sample with a flat bottom is generated. After the ice sample grows to the required thickness, the refrigeration system is turned off, and the flat ice is prepared. If overlapping ice is required, the temperature is increased by the temperature adjustment system to simulate the change of seasons, and then the process is repeated to allow the new ice sample to continue to grow downward to the required thickness on the basis of the old ice sample, and the overlapping ice is prepared. Open the box cover 12, remove the temperature measuring rod 6 from the wind shield 5, and remove the wind shield 5 from the box body 11. To prevent damage to the temperature measuring rod 6, the temperature measuring rod 6 is still retained in the ice sample. The side wall is slightly heated by the temperature adjustment system to separate the ice sample from the ice making chamber, and the motor is started to drive the tray 10 to move upward, so that the tray 10 lifts the ice sample, which is convenient for taking out the ice sample. The temperature measuring rod 6 is retrieved after the ice sample is cut and separated according to the experimental requirements.

[0039] The temperature measuring rod 6 has temperature probe points 61 evenly distributed below the waterline, and the temperature gradient diagram can be obtained through the returned data. In addition, there are corresponding temperature probe points 61 of the temperature measuring rod 6 at the same height of each side wall temperature measurement structure 7, which is convenient for comparing the side wall and center temperature data and facilitating the regulation of the temperature control system.

[0040] The heating wire 9 is adjusted by the temperature adjustment system according to the temperature data transmitted back by the side wall temperature measurement structure 7 at the adjacent position. The range of the heating wire 9, the thermal pad 8 and the side wall temperature measurement structure 7 covers the range from below the water line to the maximum growth interval of the ice sample.

[0041] In order to simulate the sea ice growth environment more realistically, the ice sample growth range is usually set to less than half of the ice making chamber depth, and there is enough brine area under the ice sample. This setting range can also buffer the salinity unevenness caused by brine penetrating through the pores of the ice sample, and can ensure that the lifting structure can successfully complete the ice retrieval operation.

[0042] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. It is not necessary and impossible to exhaustively list all the embodiments here.

Claims

1. An ice-making device capable of producing ice samples similar to polar ice, characterized in that: include: An ice making ice box, the ice making ice box comprising an ice making ice box shell and an ice making ice box inner box (14), the ice making ice box inner box (14) being located inside the ice making ice box shell, and the ice making ice box inner box (14) being provided with an ice making cavity; A refrigeration system comprises an evaporator (1), wherein the evaporator (1) is arranged in the outer shell of the ice making refrigerator and is located above the ice making chamber; The temperature regulating system comprises a temperature measuring rod (6), a plurality of side wall temperature measuring structures (7) and a plurality of side wall heating structures, wherein the temperature measuring rod (6) is provided with a plurality of temperature detection points (61) at intervals along its extension direction, the temperature measuring rod (6) is arranged in the ice making cavity and extends along the depth direction of the ice making cavity, the plurality of side wall temperature measuring structures (7) are provided at intervals along the depth direction of the ice making cavity on the outer wall of the ice making ice inner box (14), and the plurality of side wall heating structures are provided at intervals along the depth direction of the ice making cavity on the outer wall of the ice making ice inner box (14); the plurality of side wall temperature measuring structures (7) and the plurality of temperature detection points (61) are located on the same horizontal plane in a one-to-one correspondence.

2. The ice making device capable of preparing ice samples similar to polar ice according to claim 1, characterized in that: The side wall heating structure comprises a heating wire (9) and a heat-conducting gasket (8); the heat-conducting gasket (8) is fixedly arranged along the four sides of the refrigerator inner box (14); and the heating wire (9) is fixedly arranged on the heat-conducting gasket (8).

3. The ice making device capable of preparing ice samples similar to polar ice according to claim 1, characterized in that: The refrigeration system further comprises a compressor (2), a condenser (3) and a throttle valve, the output end of the evaporator (1) being connected to the input end of the compressor (2), the output end of the compressor (2) being connected to the input end of the condenser (3), the output end of the condenser (3) being connected to the input end of the throttle valve, and the output end of the throttle valve being connected to the input end of the evaporator (1).

4. The ice making device capable of preparing ice samples similar to polar ice according to claim 1, characterized in that: The refrigerator shell comprises a box body (11), a box cover (12) and a locking structure (13); the box cover (12) is rotatably arranged on the box body (11) and has an open position and a closed position; the locking structure (13) can lock the box cover (12) in the closed position; and the evaporator (1) is fixedly arranged inside the box cover (12).

5. The ice making device capable of preparing ice samples similar to polar ice according to claim 4, characterized in that: A heat-insulating filling material is provided between the box body (11) and the refrigerator inner box (14).

6. The ice making device capable of preparing ice samples similar to polar ice according to claim 4, characterized in that: It also comprises a plurality of fans (4), wherein the plurality of fans (4) are arranged at intervals on the side wall of the box cover (12).

7. The ice making device capable of preparing ice samples similar to polar ice according to claim 6, characterized in that: It also comprises a wind shield (5), wherein the wind shield (5) is fixedly arranged on the box body (11), the fan (4) and the evaporator (1) are located on one side of the wind shield (5), and the ice making chamber is located on the other side of the wind shield (5).

8. The ice making device capable of preparing ice samples similar to polar ice according to claim 7, characterized in that: It also comprises a connection structure, and the temperature measuring rod (6) is detachably connected to the wind shield (5) via the connection structure.

9. The ice making device capable of preparing ice samples similar to polar ice according to claim 1, characterized in that: It also comprises a lifting structure, the lifting structure comprising a tray (10) and a driving member, the tray (10) is located in the ice-making cavity, and the driving member can drive the tray (10) to move along the depth direction of the ice-making cavity.

10. A method for making ice that can produce ice similar to polar ice, characterized in that: The ice-making device capable of preparing ice samples similar to polar ice according to any one of claims 1 to 9 comprises: S1: inject water into the ice making chamber and prepare the brine according to the required salinity of the ice sample; S2: Start the refrigeration system to cool the brine. When the temperature of the brine drops to the critical value of solidification, repeat the spray seeding operation until ice flowers appear on the entire water surface; S3: measuring the temperature of the center of the ice-making chamber through a plurality of temperature detection points (61) of the temperature measuring rod (6) and transmitting back the center temperature data; S4: measuring the temperature around the ice-making chamber through a plurality of side wall temperature measuring structures (7) and transmitting back the temperature data of the surrounding areas; S5: determining the heating positions and heating temperatures of the multiple side wall heating structures according to the center temperature data and the surrounding temperature data, so that the center temperature and the surrounding temperature on the same horizontal plane are equal, thereby preparing an ice sample with a flat bottom; S6: judging whether the ice sample growth thickness reaches the required thickness according to the center temperature data and the surrounding temperature data; If yes, proceed to S7; If not, return to S5; S7: Turn off the refrigeration system.

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