Micro-channel capillary tube cooling device for ice and snow sculptures or ice and snow buildings

Abstract

The invention discloses a micro-channel capillary tube cooling device for ice-snow sculptures or ice-snow buildings, and relates to the technical field of ice-snow sculptures and ice-snow buildings. The problems that in the existing ice and snow building construction field, short-time abnormal high-temperature climate coping capacity is lacked, the continuous low-temperature state of an ice and snow structure cannot be maintained, and potential safety hazards exist in the structure safety of an ice and snow project are solved. According to the human blood vessel bionics principle, the micro-channel capillary tube cooling device is designed by combining the large-size characteristic of an ice and snow structure, the capillary tube is used for carrying a refrigerating medium to transmit cooling capacity to the position, close to the outer surface, of the ice and snow structure, structural temperature rise caused by sudden temperature change is counteracted, and the low-temperature state of the ice and snow structure is effectively maintained; and the uniformity of cold supply can be guaranteed, and the safety of ice and snow projects is guaranteed. The capillary tubes made of polyethylene materials can be laid in a bending mode, widely adapt to ice and snow structures of various shapes, are light in self weight and do not damage stress of the ice and snow structures. The cold insulation material is suitable for cold insulation of ice-snow sculptures or ice-snow buildings.

Description

Technical Field

[0001] The invention relates to the technical field of ice and snow sculpture and ice and snow building construction, and in particular to a microchannel capillary cooling device used for ice and snow sculpture or ice and snow building. Background Art

[0002] At present, ice and snow sculptures and ice and snow buildings have become important projects in the ice and snow tourism industry in severe cold and cold regions. However, due to the temperature sensitivity of the construction materials of ice and snow sculptures and ice and snow buildings, ice and snow projects lack the ability to cope with short-term abnormal high temperature climates, thus affecting their operating time and economic value. The survey shows that after two consecutive days of abnormal high temperature climate with an average daily temperature above -5°C in February 2024, large areas of ice needles appeared in ice and snow sculptures and ice and snow buildings, indicating that the ice and snow structures had been irreversibly damaged, leading to the early termination of related projects. Therefore, in order to ensure the safety and economic value of ice and snow projects, it is necessary to take certain measures to improve the ability of ice and snow sculptures and ice and snow buildings to cope with abnormal temperature changes. However, due to insufficient experience at home and abroad, coupled with the requirements and restrictions on the aesthetics and ornamental value of ice and snow sculptures and ice and snow buildings, there are no applicable technologies or devices.

[0003] In summary, the existing ice and snow sculpture and ice and snow building construction fields lack the ability to cope with short-term abnormally high temperature climates and are unable to maintain a continuous low temperature state of ice and snow structures, resulting in hidden dangers in the structural safety of ice and snow projects. Summary of the invention

[0004] In order to solve the problem that the existing ice and snow sculptures and ice and snow buildings lack the ability to cope with short-term abnormally high temperature climates and cannot maintain a continuous low temperature state of the ice and snow structures, resulting in hidden dangers in the structural safety of ice and snow projects, the present invention proposes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings.

[0005] The present invention provides a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, which comprises a liquid supply main pipe 1, a liquid return main pipe 2, a liquid return branch pipe 3, a liquid supply branch pipe 4, a circulation pump 5, a control valve 6, a positioning column 7, a transverse limit rod 8, a capillary bundle 9, a liquid supply branch pipe bend 10 and a liquid return branch pipe bend 11;

[0006] The positioning column 7 is fixedly installed inside the ice and snow structure, a pair of transverse limiting rods 8 are fixed on the positioning column 7 through a slot, and a pair of transverse limiting rods 8 are provided with n capillaries of the same formula along the length direction to form a capillary bundle 9, n is a positive integer, and the capillary bundle 9 is fixed in position by the positioning column 7 and the transverse limiting rod 8. The circumferential outer surface of the liquid supply branch pipe 4 is uniformly processed with m output ports along the length direction, m is a positive integer, and the input end of each capillary in the capillary bundle 9 is connected to the liquid supply branch pipe 4 through the liquid supply branch pipe bend 10. The end of the liquid supply branch pipe 4 is connected with the output end of the liquid supply main pipe 1, and the outer circumferential surface of the liquid return branch pipe 3 is uniformly processed with k input ports along the length direction, k is a positive integer, and the output end of each capillary in the capillary bundle 9 is connected with the corresponding input port on the liquid return branch pipe 3 through the liquid return branch pipe elbow 11, and the end of the liquid return branch pipe 3 is connected with the input end of the liquid return main pipe 2, and the output end of the liquid return main pipe 2 is connected with the input end of the circulation pump 5, and the liquid supply branch pipe 4 is provided with a control valve 6;

[0007] Furthermore, the present invention proposes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, which also includes a temperature sensor 12, a temperature sensor 12 is provided inside the ice and snow structure 5 to 6 cm near the outer surface, the control valve 6 is provided with a control module outside, the temperature signal output end of the temperature sensor 12 is connected to the temperature signal input end of the control module, and the drive signal output end of the control module is connected to the control valve 6;

[0008] Furthermore, the control valve 6 is an electromagnetic control valve, and the outer surface of the temperature sensor 12 is wrapped with Teflon material;

[0009] Furthermore, n capillaries are provided at equal intervals along the length direction on the pair of transverse limiting rods 8 to form a capillary bundle 9;

[0010] Furthermore, the number n of capillaries in the capillary bundle 9, the number m of output ports on the liquid supply branch 4, and the number k of input ports on the liquid return branch 3 are equal;

[0011] Furthermore, the number n of capillaries in the capillary bundle 9 is 10≤n≤100;

[0012] Furthermore, a square groove is processed on the outer surface of the positioning column 7, the groove depth is 1 to 1.5 cm, and the diameter of the transverse limiting rod 8 is 0.5 to 0.7 mm smaller than the width of the square groove;

[0013] Furthermore, a circular fixing plate is provided at the end of the positioning column 7 to close the free end surface of the square slot;

[0014] Furthermore, the inner bottom surface of the square slot on the positioning column 7 is in close contact with the outer wall of the transverse limiting rod 8;

[0015] Furthermore, the capillary tube bundle 9 is made of lightweight polyethylene material, the capillary tube diameter is 4-8 mm, and the inner diameters of the liquid supply branch elbow 10 and the liquid return branch elbow 11 are both smaller than the inner diameter of the capillary tubes in the capillary tube bundle 9;

[0016] Furthermore, when in use, for ice and snow sculptures, a hole is drilled on the surface of the sculpture embryo, the hole diameter is slightly larger than the bottom diameter of the positioning column by 0.3-0.5 cm, and the hole depth is 5-7 cm. The positioning column 7 is fixed by backfilling the hole with an ice-water mixture so that it protrudes about 3 cm from the hole mouth surface; after the positioning column 7 is completely fixed, the microchannel capillary refrigeration unit formed by the lateral limit 8 and the capillary bundle 9 and the liquid supply branch 4 and the liquid return branch 3 pre-connected to the unit are fixed near the surface of the embryo through the square card groove on the positioning column 7. After the fixing work is completed, the ice and snow material used for the sculpture art expression is covered on the outside of the microchannel capillary refrigeration unit, and the connection is frozen with an ice-water mixture to fill the gap and strengthen the structural connection with the embryo;

[0017] For ice and snow buildings, after the building wall is formed to half its thickness, the same method is used to successively fix the microchannel capillary refrigeration unit formed by the positioning column 7, the lateral limit 8 and the capillary bundle 9 and its pre-connected liquid supply branch 4 and liquid return branch 3. After completing the fixing work, continue to build ice and snow blocks close to the microchannel capillary refrigeration unit to form the other half of the wall thickness, and freeze the gaps with an ice-water mixture to strengthen the connection between the two parts of the wall.

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

[0019] The present invention overcomes the shortcomings of the prior art. Based on the principle of human vascular bionics and the characteristics of the large volume of ice and snow structures, a microchannel capillary cooling device is designed. The capillary carries a coolant to transfer cold to the ice and snow structure near the outer surface, offsetting the temperature rise of the structure caused by the sudden change in temperature, effectively maintaining the low temperature state of the ice and snow structure, and ensuring the uniformity of cooling, thereby ensuring the safety of ice and snow projects. The capillary made of polyethylene material is designed to be bend and lay, and is widely adapted to ice and snow structures of various shapes. It has a light weight and will not damage the stress of the ice and snow structure. At the same time, the present invention can also automatically control the start and stop of the cooling device through a temperature sensor and a control module, making the system more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the principle of a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to the present invention;

[0021] Figure 2It is a three-dimensional structural schematic diagram of a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to the present invention when in use;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of a positioning column in a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to the present invention;

[0023] Figure 4 It is a physical model established in an embodiment of a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings described in the present invention;

[0024] Figure 5 It is a temperature cloud diagram of an ice and snow structure at different times in an embodiment of a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to the present invention;

[0025] Figure 6 It is a curve diagram showing the change of the average temperature of each wall surface over time in an embodiment of a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings described in the present invention. DETAILED DESCRIPTION

[0026] Specific implementation method 1: Combination Figures 1 to 6 The present embodiment is described. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings described in the present embodiment comprises a liquid supply main pipe 1, a liquid return main pipe 2, a liquid return branch pipe 3, a liquid supply branch pipe 4, a circulation pump 5, a control valve 6, a positioning column 7, a transverse limit rod 8, a capillary bundle 9, a liquid supply branch pipe bend 10 and a liquid return branch pipe bend 11;

[0027] The positioning column 7 is fixedly installed inside the ice and snow structure, a pair of transverse limiting rods 8 are fixed on the positioning column 7 through a slot, and a pair of transverse limiting rods 8 are provided with n capillaries of the same formula along the length direction to form a capillary bundle 9, n is a positive integer, and the capillary bundle 9 is fixed in position by the positioning column 7 and the transverse limiting rod 8. The circumferential outer surface of the liquid supply branch pipe 4 is uniformly processed with m output ports along the length direction, m is a positive integer, and the input end of each capillary in the capillary bundle 9 is connected to the liquid supply branch pipe 4 through the liquid supply branch pipe bend 10. The end of the liquid supply branch pipe 4 is connected with the output end of the liquid supply main pipe 1, and the outer circumferential surface of the liquid return branch pipe 3 is uniformly processed with k input ports along the length direction, k is a positive integer, and the output end of each capillary in the capillary bundle 9 is connected with the corresponding input port on the liquid return branch pipe 3 through the liquid return branch pipe elbow 11, and the end of the liquid return branch pipe 3 is connected with the input end of the liquid return main pipe 2, and the output end of the liquid return main pipe 2 is connected with the input end of the circulation pump 5, and the liquid supply branch pipe 4 is provided with a control valve 6;

[0028] In this specific embodiment, when in use, for ice and snow sculptures, a hole is drilled on the surface of the sculpture embryo, the hole diameter is slightly larger than the bottom diameter of the positioning column by 0.3-0.5cm, and the hole depth is 5-7cm. The positioning column 7 is fixed by backfilling the hole with an ice-water mixture so that it protrudes about 3cm from the hole mouth surface; after the positioning column 7 is completely fixed, the microchannel capillary refrigeration unit and the pre-connected liquid supply branch pipe 4 and liquid return branch pipe 3 of the unit are fixed near the surface of the embryo through the square card slot on the positioning column 7. After the fixing work is completed, the ice and snow material used for the sculpture art expression is covered on the outside of the microchannel capillary refrigeration unit, and the connection is frozen with an ice-water mixture to fill the gap and strengthen the structural connection with the embryo;

[0029] For ice and snow buildings, after the building wall is formed to half its thickness, the same method is used to successively fix the microchannel capillary refrigeration unit formed by the positioning column 7, the lateral limit 8 and the capillary bundle 9 and its pre-connected liquid supply branch 4 and liquid return branch 3. After completing the fixing work, continue to build ice and snow blocks close to the microchannel capillary refrigeration unit to form the other half of the wall thickness, and freeze the gaps with an ice-water mixture to strengthen the connection between the two parts of the wall.

[0030] Specific implementation method 2: Combination Figures 1 to 6 This embodiment is described. This embodiment is a further limitation of the cooling device described in the specific embodiment 1. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings described in this embodiment further includes a temperature sensor 12, which is buried in the ice and snow structure by drilling at a distance of 5-6 cm from the outer surface. The control valve 6 is provided with a control module. The temperature signal output end of the temperature sensor 12 is connected to the temperature signal input end of the control module, and the drive signal output end of the control module is connected to the control valve 6.

[0031] In this specific implementation, a temperature sensor 12 is used to monitor the temperature inside the ice and snow sculptures and ice and snow buildings in real time, and the monitored temperature real-time signal is then transmitted to the control module. The control module controls the opening and closing of the control valve 6, thereby controlling the flow rate of the coolant in the liquid supply branch pipe 4, and finally achieving control of the refrigeration efficiency of the capillary tube bundle 9. The control module is a two-point on / off control mode.

[0032] Specific implementation method three: Combination Figures 1 to 6 This embodiment is described as a further limitation of the cooling device described in the second embodiment. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings. The control valve 6 adopts an electromagnetic control valve, and the outer surface of the temperature sensor 12 is wrapped with Teflon material.

[0033] Specific implementation method four: Combination Figures 1 to 6This embodiment is described. This embodiment is a further limitation of the cooling device described in the first embodiment. In this embodiment, a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings is described. The pair of transverse limit rods 8 are provided with n capillaries of the same type at equal intervals along the length direction to form a capillary bundle 9;

[0034] In this specific embodiment, the n capillaries of the capillary bundle 9 are connected in parallel by using the liquid return branch pipe 3 and the liquid supply branch pipe 4 .

[0035] Specific implementation method five: Combination Figures 1 to 6 To explain this embodiment, this embodiment is a further limitation of the cooling device described in the specific embodiment 1. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, wherein the number n of capillaries in the capillary bundle 9, the number m of output ports on the liquid supply branch 4, and the number k of input ports on the liquid return branch 3 are equal.

[0036] Specific implementation method six: Combination Figures 1 to 6 This embodiment is described as a further limitation of the cooling device described in the fifth embodiment. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, and the number n of capillaries in the capillary bundle 9 is 10≤n≤100.

[0037] Specific implementation method seven: Combination Figures 1 to 6 This embodiment is described. This embodiment is a further limitation of the cooling device described in the first embodiment. In this embodiment, a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings is described. A square groove is processed on the outer surface of the positioning column 7. The groove depth is 1 to 1.5 cm. The diameter of the transverse limit rod 8 is 0.5 to 0.7 mm smaller than the width of the square groove.

[0038] In this specific embodiment, the positioning column 7 is made of synthetic polymer material, has a length of 8 to 10 cm, and a bottom diameter of 1 to 1.4 cm.

[0039] Specific implementation method eight: Combination Figures 1 to 6 This embodiment is described as a further limitation of the cooling device described in the seventh embodiment. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, and the end of the positioning column 7 is provided with a circular fixing plate for closing the free end face of the square slot.

[0040] Specific implementation method nine: Combination Figures 1 to 6To explain this embodiment, this embodiment is a further limitation of the cooling device described in Specific Embodiment 7. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, and the inner bottom surface of the square groove on the positioning column 7 is in close contact with the outer wall of the transverse limit rod 8.

[0041] Specific implementation method ten: Combination Figures 1 to 6 To explain this embodiment, this embodiment is a further limitation of the cooling device described in the specific embodiment one. This embodiment describes a microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings. The capillary bundle 9 is made of lightweight polyethylene material. The capillary tube diameter in the tube bundle is 4 to 8 mm, and the inner diameters of the liquid supply branch bend 10 and the return branch bend 11 are both smaller than the inner diameter of the capillary tube bundle 9.

[0042] How it works

[0043] When in use, for ice and snow sculptures, a hole is drilled on the surface of the sculpture embryo, the hole diameter is slightly larger than the bottom diameter of the positioning column by 0.3-0.5cm, and the hole depth is 5-7cm. The positioning column 7 is fixed by backfilling the hole with ice-water mixture so that it protrudes about 3cm from the hole mouth surface; after the positioning column 7 is completely fixed, the microchannel capillary refrigeration unit and the pre-connected liquid supply branch pipe 4 and liquid return branch pipe 3 of the unit are fixed near the surface of the embryo through the square card slot on the positioning column 7. After the fixing work is completed, the ice and snow material used for the sculpture art expression is covered on the outside of the microchannel capillary refrigeration unit, and the connection is frozen with ice-water mixture to fill the gap and strengthen the structural connection with the embryo;

[0044] For ice and snow buildings, after the building wall is formed to half its thickness, the same method is used to successively fix the microchannel capillary refrigeration unit formed by the positioning column 7, the lateral limit 8 and the capillary bundle 9 and its pre-connected liquid supply branch 4 and liquid return branch 3. After completing the fixing work, continue to build ice and snow blocks close to the microchannel capillary refrigeration unit to form the other half of the wall thickness, and freeze the gaps with an ice-water mixture to strengthen the connection between the two parts of the wall.

[0045] Specific implementation method eleven: Combination Figures 1 to 6 This embodiment is described. This embodiment is a further limitation of the cooling device described in the first embodiment. In order to verify the effectiveness of the microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings described in this embodiment, the following experiments are carried out by means of CFD numerical simulation:

[0046] like Figure 4The physical model established in this embodiment is shown. In this embodiment, a microchannel capillary cooling unit is laid at a depth of 50mm from the upper surface of an ice block with a total thickness of 400mm, a length and width of 320mm and 300mm respectively. The capillary diameter is 4mm and the capillary spacing is 20mm. Since this embodiment mainly verifies the cooling effect of the microchannel capillary device, the positioning column, the transverse limit rod, the liquid supply main pipe, the liquid return main pipe, the liquid supply branch pipe and the liquid return branch pipe, and the circulating pump are omitted. Modeling of the refrigeration system. The refrigerant uses ethylene glycol solution, and the temperature of the ethylene glycol solution provided by the liquid supply main pipe is set to -10°C, that is, the temperature of the refrigerant flowing into the capillary is -10°C, and the refrigerant flow rate is 0.1m / s. The solar radiation intensity on the upper surface of the ice block model is 350W / m 2 , the air temperature in direct contact with the ice is -5°C. In the numerical simulation, it is assumed that the ice does not undergo phase change when the temperature exceeds 0°C.

[0047] Figure 5 (a) shows the temperature distribution of the ice cube when the microchannel capillary cooling device is not turned on. It can be seen that when there is no cooling, affected by the higher air temperature and solar radiation, most of the upper surface of the ice cube is in the high temperature area, and its average temperature is about 6°C, indicating that the upper surface of the ice cube melts in actual conditions. Figure 5 (b) to Figure 5 (j) Shows the change in ice temperature every 15 minutes after the microchannel capillary cooling device is turned on. Figure 6 The average temperature of each wall in the model changes with time. The simulation results show that when the capillary starts to cool, the temperature of the upper surface of the ice cube gradually decreases. After 15 minutes of cooling, the average temperature of the upper surface has dropped to 2°C. After 30 minutes of cooling, the average temperature of the upper surface has dropped below 0°C. After 1.25 hours of cooling, the average temperature of the upper surface drops below -2°C and tends to stabilize. The average temperature of the right wall and the capillary inlet wall also gradually drops from nearly 0°C in the uncooled state to -6°C and -8°C respectively.

[0048] The above simulation results show that the cooling device proposed in the present invention can effectively reduce the temperature of ice and snow structures under abnormal warming climate conditions in a short period of time and maintain it below the melting point, which is of great significance for the safe operation of ice and snow projects and the protection of their economic value.

Claims

1. A microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings, characterized in that: It comprises a liquid supply main pipe (1), a liquid return main pipe (2), a liquid return branch pipe (3), a liquid supply branch pipe (4), a circulation pump (5), a control valve (6), a positioning column (7), a transverse limiting rod (8), a capillary tube bundle (9), a liquid supply branch pipe elbow (10) and a liquid return branch pipe elbow (11); The positioning column (7) is fixedly installed inside the ice and snow structure, a pair of transverse limiting rods (8) are fixed on the positioning column (7) through a slot, and the pair of transverse limiting rods (8) are provided with n capillaries of the same formula along the length direction to form a capillary tube bundle (9), n is a positive integer, the capillary tube bundle (9) is fixed in position by the positioning column (7) and the transverse limiting rods (8), the circumferential outer surface of the liquid supply branch pipe (4) is uniformly processed with m output ports along the length direction, m is a positive integer, and the input end of each capillary in the capillary tube bundle (9) is connected to the liquid supply branch pipe (4) through a liquid supply branch pipe bend (10) The end of the liquid supply branch pipe (4) is connected to the output end of the liquid supply main pipe (1), and the outer circumferential surface of the liquid return branch pipe (3) is uniformly processed with k input ports along the length direction, where k is a positive integer. The output end of each capillary in the capillary tube bundle (9) is connected to the corresponding input port on the liquid return branch pipe (3) through a liquid return branch pipe elbow (11). The end of the liquid return branch pipe (3) is connected to the input end of the liquid return main pipe (2), and the output end of the liquid return main pipe (2) is connected to the input end of the circulation pump (5). A control valve (6) is provided on the liquid supply branch pipe (4).

2. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 1, characterized in that: It also includes a temperature sensor (12), which is buried in the ice and snow structure by drilling a hole at a distance of 5 to 6 cm from the outer surface. The control valve (6) is provided with a control module outside. The temperature signal output end of the temperature sensor (12) located inside the ice and snow structure close to the outer surface is connected to the temperature signal input end of the control module, and the drive signal output end of the control module is connected to the control valve (6).

3. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 2, characterized in that: The control valve (6) is an electromagnetic control valve, and the outer surface of the temperature sensor (12) is wrapped with Teflon material.

4. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 1, characterized in that: The pair of transverse limiting rods (8) are provided with n capillaries of the same pattern at equal intervals along the length direction to form a capillary bundle (9).

5. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 1, characterized in that: The number n of capillaries in the capillary bundle (9), the number m of output ports on the liquid supply branch pipe (4) and the number k of input ports on the liquid return branch pipe (3) are equal.

6. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 5, characterized in that: The number n of the capillaries in the capillary bundle (9) is 10≤n≤100.

7. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 1, characterized in that: A square groove is processed on the outer surface of the positioning column (7), the groove depth is 1 to 1.5 cm, and the diameter of the transverse limiting rod (8) is 0.5 to 0.7 mm smaller than the width of the square groove.

8. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 7, characterized in that: The end of the positioning column (7) is provided with a circular fixing plate for closing the free end surface of the square slot.

9. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 7, characterized in that: The inner bottom surface of the square slot on the positioning column (7) is in close contact with the outer wall of the transverse limiting rod (8).

10. The microchannel capillary cooling device for ice and snow sculptures or ice and snow buildings according to claim 1, characterized in that: The capillary tube bundle (9) is made of lightweight polyethylene material, the capillary tube diameter is 4-8 mm, and the inner diameters of the liquid supply branch elbow (10) and the liquid return branch elbow (11) are both smaller than the inner diameter of the capillaries in the capillary tube bundle (9).

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