A mold and method for making columnar ice

Abstract

The application provides a preparation mold and method of columnar ice, and relates to the technical field of ice making. The preparation mold of columnar ice comprises a container, a heating assembly, an interception layer, a condensation layer and an overflow pipe assembly. The top of the container is provided with an open structure. The interception layer and the condensation layer cover the top of the container, and the interception layer is located below the condensation layer. The overflow pipe assembly is in communication with the bottom of the container. The heating assembly is used for heating the peripheral surface and the bottom surface of the container and the overflow pipe assembly. The water vapor is condensed into hoarfrost on the lower surface of the condensation layer, and then falls on the interception layer below, so that the hoarfrost is prevented from falling on the water body and affecting the freezing quality of the ice sample, and high-quality columnar ice with high transparency and low bubble content is prepared. The application provides a reliable preparation mold for laboratory research on columnar ice.

Description

Technical Field

[0001] This invention relates to the field of ice-making technology, and more specifically, to a mold and method for preparing columnar ice. Background Technology

[0002] Related research shows that ice in nature exists in a heterogeneous form. Specifically, the uppermost layer of ice has granular crystals, while the crystals gradually evolve into columnar crystals in the lower layers. Generally, to conduct scientific research on columnar ice in the laboratory, ice must first be collected from lakes and oceans in the wild, and then transported to the laboratory for cutting, preservation, and experimental research.

[0003] A key issue is that the complexity of the natural environment results in a large number of impurities in ice extracted from the field, including air bubbles, twigs, and leaves, which adds complexity to scientific research on ice samples. Furthermore, the rapid development of scientific research related to ice samples in recent years has led to a surge in demand for ice samples. Therefore, preparing high-quality columnar ice samples in the laboratory has become an essential step for researchers. Summary of the Invention

[0004] To at least partially solve the above problems, in a first aspect, the present invention provides a mold for preparing columnar ice, including a container, a heating component, an intercepting layer, a condensation layer, and an overflow pipe assembly. The top of the container is provided as an open structure, the intercepting layer and the condensation layer cover the top of the container, and the intercepting layer is located below the condensation layer. The overflow pipe assembly is connected to the bottom of the container, and the heating component is used to heat the peripheral surface and bottom surface of the container as well as the overflow pipe assembly.

[0005] Optionally, it may also include a buffer layer connected to the inner circumferential surface of the container.

[0006] Optionally, the heating assembly includes an electric heating strip, a wire, a thermostat, and a temperature sensor. The electric heating strip is wrapped around the periphery and bottom of the container and the surface of the overflow pipe assembly. The electric heating strip is connected to the thermostat via the wire. The thermostat is connected to the temperature sensor, which is used to detect the temperature of the container and the overflow pipe assembly.

[0007] Optionally, it also includes an insulation layer that covers the electric heating band on the periphery and bottom of the container and the surface of the overflow pipe assembly.

[0008] Optionally, the container includes a shell, the bottom of which has an internally threaded hole that is threadedly connected to the overflow pipe assembly.

[0009] Optionally, the overflow pipe assembly includes an elbow quick connector, a pipe, and a right-angle quick connector. The pipe includes a first pipe section and a second pipe section. One end of the elbow quick connector is threadedly connected to the internal threaded hole. The other end of the elbow quick connector is connected to one end of the right-angle quick connector through the first pipe section to make the first pipe section horizontal. The other end of the right-angle quick connector is connected to the second pipe section to make the second pipe section vertical.

[0010] Optionally, both the insulation layer and the buffer layer are made of insulation cotton.

[0011] Optionally, the condensation layer is a plastic wrap, which is attached to the top periphery of the container in a taut state.

[0012] Optionally, the intercepting layer is made of gauze, which is loosely attached to the top periphery of the container so that a downwardly recessed cavity is formed between the gauze and the plastic wrap.

[0013] Secondly, the present invention also provides a method for preparing columnar ice, based on the columnar ice preparation mold described above, comprising the following steps:

[0014] S1: Prepare deaerated distilled water in advance and cool it in a cold room. When the temperature of the deaerated distilled water drops to 0℃, move the ice mold into the cold room and slowly pour the prepared deaerated distilled water into the container of the ice mold.

[0015] S2: Cover the top of the container with the intercepting layer and the condensation layer, and place the intercepting layer below the condensation layer;

[0016] S3: Adjust the cold room temperature to the freezing temperature, turn on the heating element, and set the heating temperature according to the freezing temperature;

[0017] S4: After a preset time, the ice sample in the container freezes to a certain thickness, enters the cold chamber, removes the intercepting layer and condensation layer at the top of the container, takes out the ice sample, cuts each surface of the ice sample flat, and finally obtains a high-quality columnar ice sample.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Heating components heat the perimeter and bottom of the container, balancing heat loss around the sides and bottom. The container has an open top, allowing the ice sample to freeze gradually from top to bottom while remaining unfrozen or freezing more slowly in other directions, achieving unidirectional freezing. The heating components also heat the overflow pipe assembly to prevent it from freezing, thus removing air bubbles generated during freezing and improving ice sample quality. Furthermore, the heating of the overflow pipe prevents the container from cracking or deforming due to excessive pressure. In the initial freezing stage, the water evaporates due to the temperature difference between the water and the cold chamber. A condensation layer condenses the water vapor into frost on its lower surface, which then falls onto the intercepting layer below, preventing frost from falling onto the water and affecting the freezing quality. This process produces high-quality columnar ice samples with high transparency and low air bubble content, providing a reliable preparation mold for laboratory research on columnar ice. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the mold for preparing columnar ice according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overflow pipe assembly in the mold for preparing columnar ice according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the heating component in the mold for preparing columnar ice according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Container; 11. Outer shell; 12. Internal threaded hole; 2. Heating assembly; 21. Electric heating belt; 22. Wire; 23. Thermostat; 24. Temperature sensor; 3. Insulation layer; 4. Buffer layer; 5. Interception layer; 6. Condensation layer; 7. Columnar ice-like structure; 8. Overflow pipe assembly; 81. Elbow quick coupling; 82. Pipe; 83. Right angle quick coupling. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0028] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] like Figure 1 As shown, this embodiment of the invention provides a mold for preparing columnar ice, including a container 1, a heating component 2, an intercepting layer 5, a condensation layer 6, and an overflow pipe assembly 8. The top of the container 1 is designed as an open structure. The intercepting layer 5 and the condensation layer 6 cover the top of the container 1, and the intercepting layer 5 is located below the condensation layer 6. The overflow pipe assembly 8 is connected to the bottom of the container 1. The heating component 2 is used to heat the circumferential surface and bottom surface of the container 1 as well as the overflow pipe assembly 8.

[0030] In this embodiment, the heating component 2 heats the periphery and bottom of the container 1, thereby balancing the heat loss around the container 1 and at the bottom. The top of the container 1 is open, allowing the ice sample to freeze gradually from the top to the bottom, while remaining unfrozen or freezing at a slower rate in other directions. This achieves unidirectional freezing of the ice sample. Furthermore, the heating component 2 also heats the overflow pipe assembly 8 to prevent it from freezing, allowing air bubbles generated during freezing to escape, improving the quality of the ice sample, and releasing any trapped air bubbles that may accumulate during the freezing process. The expansion pressure generated in the depth direction of container 1 prevents container 1 from cracking or deforming due to excessive pressure. At the same time, in the early stage of freezing, due to the temperature difference between the water temperature in container 1 and the cold chamber temperature, the water will evaporate to a certain extent. By setting up condensation layer 6, the water vapor is condensed into frost on the lower surface of condensation layer 6 and then falls onto the interception layer 5 below, thereby preventing frost from falling onto the water and affecting the freezing quality of the ice sample. This results in the preparation of a high-quality columnar ice sample 7 with high transparency and low bubble content, providing a reliable preparation mold for laboratory research on columnar ice.

[0031] It should be noted that the primary reason for unidirectional freezing of the ice sample in container 1 during the preparation of columnar ice sample 7 is to control its crystallization morphology and structure. Unidirectional freezing means that the ice sample gradually grows and crystallizes in one specific direction, while remaining uncrystallized or freezing at a slower rate in other directions. This method helps to form columnar ice structures with specific shapes, sizes, and orientations. Specifically, the benefits of unidirectional freezing include: 1. Morphology control: Unidirectional freezing allows for precise control of the ice's morphology and structure, thus producing columnar ice with specific shapes and sizes. This is crucial for applications requiring ice of specific shapes, such as scientific research, biomedicine, and food processing. 2. Improved quality: Unidirectional freezing helps reduce bubbles, cracks, and other defects in the ice, thereby improving its quality and purity. This is essential for applications requiring high-quality ice, such as cryogenic storage and refrigerated transport. 3. Optimized performance: Columnar ice possesses unique physical and chemical properties, such as high specific surface area and good thermal conductivity. Columnar ice prepared through unidirectional freezing can better leverage these performance advantages to meet the needs of specific applications.

[0032] like Figure 1 As shown, optionally, the mold for preparing columnar ice also includes a buffer layer 4, which is connected to the inner circumferential surface of the container 1.

[0033] In this embodiment, the buffer layer 4 can be bonded to the inner circumferential surface of the container 1 with an adhesive. When the ice sample begins to expand, the buffer layer 4 can provide a buffer zone, allowing the ice sample to expand freely within a certain range. This releases the circumferential expansion pressure generated by the ice sample during the freezing process, thereby preventing excessive pressure on the inner circumferential surface of the container 1, protecting the container 1 from damage, and ensuring that the freezing process of the ice sample proceeds smoothly.

[0034] like Figure 2 As shown, optionally, the heating assembly 2 includes an electric heating strip 21, a wire 22, a thermostat 23, and a temperature sensor 24. The electric heating strip 21 is wrapped around the periphery and bottom of the container 1 and the surface of the overflow pipe assembly 8. The electric heating strip 21 is connected to the thermostat 23 through the wire 22. The thermostat 23 is connected to the temperature sensor 24. The temperature sensor 24 is used to detect the temperature of the container 1 and the overflow pipe assembly 8.

[0035] In this embodiment, two temperature sensors 24 can be provided, and the sensing ends of the two temperature sensors 24 can abut against the outer wall of the container 1 and the outer wall of the overflow pipe assembly 8. The temperature controller 23 is placed in a room temperature environment for easy operation. The electric heating belt 21 can be wrapped around the periphery and bottom of the container 1 and the surface of the overflow pipe assembly 8 by spiral winding, thereby heating the container 1 and the overflow pipe assembly 8.

[0036] like Figure 1As shown, optionally, the mold for preparing columnar ice also includes a heat insulation layer 3, which covers the electric heating band 21 on the periphery and bottom of the container 1 and the surface of the overflow pipe assembly 8.

[0037] In this embodiment, by covering the periphery and bottom of the container 1 and the surface of the overflow pipe assembly 8 with the insulation layer 3, the heat loss of the electric heating band 21 on the periphery and bottom of the container 1 can be reduced, so as to ensure that the ice sample inside the container 1 can meet the conditions for unidirectional freezing. At the same time, the insulation layer 3 on the surface of the overflow pipe assembly 8 is also used to reduce the heat loss of the electric heating band 21.

[0038] like Figure 2 As shown, optionally, the container 1 includes a shell 11, the bottom of which is provided with an internal threaded hole 12, which is threadedly connected to the overflow pipe assembly 8.

[0039] In this embodiment, in order to reduce the weight of container 1, the outer shell 11 can be made of aluminum. The internal threaded hole 12 can be set at the center of the bottom of the outer shell 11 and communicate with the inner cavity of the outer shell 11. By threading the overflow pipe assembly 8 into the internal threaded hole 12, the container 1 is connected to the overflow pipe assembly 8. The overflow pipe assembly 8 is connected to the internal threaded hole 12 by a threaded connection, which facilitates the assembly and disassembly of the overflow pipe assembly 8 and the container 1 and improves the portability of the preparation mold.

[0040] like Figure 1 and Figure 2 As shown, optionally, the overflow pipe assembly 8 includes an elbow quick connector 81, a pipe 82, and a right-angle quick connector 83. The pipe 82 includes a first pipe section and a second pipe section. One end of the elbow quick connector 81 is threadedly connected to the internal threaded hole 12. The other end of the elbow quick connector 81 is connected to one end of the right-angle quick connector 83 through the first pipe section to make the first pipe section horizontal. The other end of the right-angle quick connector 83 is connected to the second pipe section to make the second pipe section vertical.

[0041] In this embodiment, the pipe 82 can be made of metal, such as stainless steel, to prevent freezing and cracking in the cold chamber. The pipe 82 includes a horizontal first pipe section and a vertical second pipe section. Through the cooperation between the first pipe section, the second pipe section and the elbow quick connector 81 and right-angle quick connector 83, the second pipe section is led out horizontally from the bottom of the container 1 and then set vertically. In this way, the first pipe section and the second pipe section act as a communicating vessel. Before freezing, the liquid level in the second pipe section is the same as the liquid level in the container 1, thereby ensuring that the degassed distilled water in the container 1 will not flow out, and the air bubbles generated by the degassed distilled water during freezing can be discharged through the first pipe section and the second pipe section, and the expansion pressure generated in the depth direction of the container 1 during the freezing process of ice-like ice can be released.

[0042] like Figure 1As shown, optionally, both the insulation layer 3 and the buffer layer 4 are made of insulation cotton.

[0043] Specifically, the insulation cotton can be made of materials such as fiberglass wool or rock wool. The cut insulation cotton is neatly wrapped around the perimeter and bottom of container 1, ensuring its uniformity and tightness. Appropriate gaps should be left at joints and connections for sealing. Common sealing methods include sealing adhesive and sealing tape. Before sealing, debris and dust should be cleaned from the surface of container 1 and the connections to ensure a good seal, insulation effect, and service life. The insulation cotton is then wrapped along the length of the overflow pipe assembly 8, ensuring it is flush with the two... The surfaces of the pipes 82 are tightly fitted without gaps. The elbow quick connectors 81 and right-angle quick connectors 83 can be wrapped with segmented or specially shaped insulation cotton to ensure good insulation effect. The insulation cotton covering the bottom of the container 1 can be thick, so that the elbow quick connectors 81 and the corresponding pipes 82 are buried in the insulation cotton at the bottom of the container 1. In this way, the insulation effect of the corresponding overflow pipe assembly 8 buried in the insulation cotton at the bottom of the container 1 can be further improved, and the bottom of the container 1 can also be made horizontal, which is convenient for the placement of the container 1.

[0044] like Figure 1 As shown, optionally, the condensation layer 6 is a plastic wrap, which is attached to the top periphery of the container 1 in a taut state.

[0045] Specifically, the plastic wrap can be connected to the top periphery of container 1 via an elastic frame. Specifically, by setting a stretchable elastic frame, such as silicone or rubber, on the top periphery of container 1, the plastic wrap can be stretched and tightly adhered to this elastic frame, utilizing the elasticity and tension of the frame to maintain the plastic wrap's tension. Alternatively, the plastic wrap can be connected to the top periphery of container 1 via clips or buckles. Specifically, by designing clips or buckles on the top periphery of container 1, after the plastic wrap is placed over the top of container 1, these clips or buckles are used to fix the plastic wrap to the edge of container 1, ensuring the plastic wrap is in a taut state. Another option is to apply a thin layer of adhesive (such as food-grade silicone or double-sided tape) to the top periphery of container 1, and then smoothly adhere the plastic wrap to the top of container 1, using the adhesive's stickiness to fix the plastic wrap in place.

[0046] In this embodiment, at the beginning of freezing, the temperature of the deaerated distilled water in container 1 is higher than the temperature inside the cold chamber. The upper surface of the plastic wrap faces the cold chamber, while the lower surface faces the inside of container 1. This results in a higher temperature on the upper surface of the plastic wrap and a lower temperature on the lower surface. As a result, when the deaerated distilled water in container 1 evaporates and comes into contact with the plastic wrap, it forms frost and condenses on the lower surface of the plastic wrap. As the frost accumulates, it gradually falls off the lower surface of the plastic wrap and onto the intercepting layer 5. Because the plastic wrap has a certain degree of air permeability, the cold air in the cold chamber can still penetrate from the top of container 1, achieving one-way freezing. Furthermore, the plastic wrap is readily available and has low usage costs.

[0047] In other embodiments, the plastic wrap can also be a special heat-shrinkable plastic wrap that shrinks and adheres tightly to the top periphery of container 1 after heating. The plastic wrap is heated by a heating device (such as a hair dryer or a dedicated heat shrink machine) to shrink and fix it.

[0048] like Figure 1 As shown, optionally, the intercepting layer 5 is made of gauze, which is loosely attached to the top periphery of the container 1 so that a downwardly recessed cavity is formed between the gauze and the plastic wrap.

[0049] Specifically, the gauze can be connected to the top perimeter of container 1 using elastic bands or rubber bands. Specifically, elastic bands or rubber bands are sewn around the perimeter of the gauze and then looped around the top perimeter of container 1. Due to the elasticity of the elastic bands or rubber bands, the gauze can remain loose while covering the top of container 1. Alternatively, the gauze can be connected to the top perimeter of container 1 using clips or hooks. Specifically, small clips or hooks are installed around the top perimeter of container 1, and small loops or straps are sewn onto the corresponding positions of the gauze. These loops or straps allow the gauze to be hung on the clips or hooks of container 1, thus achieving the connection. This method also maintains the gauze's looseness. The gauze can also be connected to the top perimeter of container 1 using hot melt adhesive or double-sided tape. Hot melt adhesive or double-sided tape is used to directly attach the gauze to the top perimeter of container 1. This method is simple and easy to implement, but it is necessary to ensure a secure connection and the looseness of the gauze.

[0050] In this embodiment, by attaching the gauze to the top periphery of the container 1 in a relaxed state, the gauze forms a downward-concave cavity with the plastic wrap due to its own weight, and the bottom surface of the cavity is spherical. In this way, the gauze can catch the frost that falls freely from the bottom of the plastic wrap, preventing the frost from falling onto the liquid surface in the container 1 and affecting the quality of the subsequent ice sample.

[0051] In other embodiments, the intercepting layer 5 can also be other breathable fabrics that allow water vapor to pass through, such as cotton linen or pure cotton fabric. Since gauze has a lower procurement cost, it is preferred to use gauze, thereby reducing the procurement cost of the laboratory.

[0052] This invention also provides a method for preparing columnar ice, based on the above-mentioned columnar ice preparation mold, including the following steps:

[0053] S1: Prepare deaerated distilled water in advance and cool it in a cold room. When the temperature of the deaerated distilled water drops to 0℃, move the ice mold into the cold room and slowly pour the prepared deaerated distilled water into container 1 of the ice mold.

[0054] S2: Cover the top of container 1 with the intercepting layer 5 and the condensation layer 6, and place the intercepting layer 5 below the condensation layer 6;

[0055] S3: Adjust the cold room temperature to the freezing temperature, turn on the heating component 2, and set the heating temperature according to the freezing temperature;

[0056] S4: After a preset time, the ice sample in container 1 freezes to a certain thickness, enters the cold chamber, removes the intercepting layer 5 and condensation layer 6 at the top of container 1, takes out the ice sample, cuts each surface of the ice sample flat, and finally obtains a high-quality columnar ice sample 7.

[0057] It should be noted that in step S1, since the degassed distilled water is taken from room temperature into the cold room, the initial temperature of the cold room cannot be too low to prevent the degassed distilled water from freezing before it is officially frozen. After the degassed distilled water is poured into container 1, a certain distance must be reserved between the liquid surface of the degassed distilled water and the top edge of container 1. In other words, the liquid surface of the degassed distilled water must be a certain distance from the intercepting layer 5. If the liquid surface of the degassed distilled water is too close to the intercepting layer 5, the ice will expand and stick to the intercepting layer 5 when freezing, making it inconvenient to remove the intercepting layer 5 in the subsequent step S4.

[0058] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A mold for preparing columnar ice, characterized in that, The container (1) includes a container (1), a heating assembly (2), a barrier layer (5), a condensation layer (6), and an overflow pipe assembly (8). The top of the container (1) is an open structure. The barrier layer (5) and the condensation layer (6) cover the top of the container (1), and the barrier layer (5) is located below the condensation layer (6). The overflow pipe assembly (8) is connected to the bottom of the container (1). The heating assembly (2) is used to heat the periphery and bottom surface of the container (1) and the overflow pipe assembly (8). The condensation layer (6) is a plastic wrap, which is attached to the top periphery of the container (1) in a taut state. The intercepting layer (5) is made of gauze, which is loosely attached to the top periphery of the container (1) so that a downwardly recessed cavity is formed between the gauze and the plastic wrap.

2. The mold for preparing columnar ice as described in claim 1, characterized in that, It also includes a buffer layer (4) which is connected to the inner circumferential surface of the container (1).

3. The mold for preparing columnar ice as described in claim 2, characterized in that, The heating assembly (2) includes an electric heating strip (21), a wire (22), a thermostat (23), and a temperature sensor (24). The electric heating strip (21) is wrapped around the periphery and bottom of the container (1) and the surface of the overflow pipe assembly (8). The electric heating strip (21) is connected to the thermostat (23) through the wire (22). The thermostat (23) is connected to the temperature sensor (24). The temperature sensor (24) is used to detect the temperature of the container (1) and the overflow pipe assembly (8).

4. The mold for preparing columnar ice as described in claim 3, characterized in that, It also includes a heat insulation layer (3), which covers the electric heating band (21) on the periphery and bottom of the container (1) and the surface of the overflow pipe assembly (8).

5. The mold for preparing columnar ice as described in claim 1, characterized in that, The container (1) includes a shell (11), the bottom of which is provided with an internal threaded hole (12), which is threadedly connected to the overflow pipe assembly (8).

6. The mold for preparing columnar ice as described in claim 5, characterized in that, The overflow pipe assembly (8) includes a quick-connect elbow (81), a pipe (82), and a quick-connect right angle (83). The pipe (82) includes a first pipe section and a second pipe section. One end of the quick-connect elbow (81) is threadedly connected to the internal threaded hole (12). The other end of the quick-connect elbow (81) is connected to one end of the quick-connect right angle (83) through the first pipe section to make the first pipe section horizontal. The other end of the quick-connect right angle (83) is connected to the second pipe section to make the second pipe section vertical.

7. The mold for preparing columnar ice as described in claim 4, characterized in that, Both the insulation layer (3) and the buffer layer (4) are made of insulation cotton.

8. A method for preparing columnar ice, based on the columnar ice preparation mold as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Prepare deaerated distilled water in advance and put it in the cold room to cool. When the temperature of the deaerated distilled water drops to 0℃, move the ice mold into the cold room and slowly pour the prepared deaerated distilled water into the container (1) of the ice mold. S2: Cover the top of the container (1) with the intercepting layer (5) and the condensation layer (6), and place the intercepting layer (5) below the condensation layer (6); S3: Adjust the cold room temperature to the freezing temperature, turn on the heating component (2) at the same time, and set the heating temperature according to the freezing temperature; S4: After a preset time, the ice sample in container (1) freezes to a certain thickness and enters the cold chamber. The intercepting layer (5) and condensation layer (6) at the top of container (1) are removed, the ice sample is taken out, and each surface of the ice sample is cut flat to finally obtain a high-quality columnar ice sample (7).

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