Ice rink refrigeration system and multifunctional sports stadium

Abstract

The utility model discloses an ice rink refrigerating system and multi -functional stadium, the ice rink refrigerating system includes sky radiation refrigeration module, phase change material refrigeration module and transportation pipeline, and sky radiation refrigeration module sets up in the multi -functional stadium roof, and the inside formation of sky radiation refrigeration module has first flow channel, and the first flow channel is filled with the coolant for absorbing the refrigerating capacity of sky radiation refrigeration module generation, and phase change material ice module includes the bottom plate and phase change material cold plate that are laid on the ground of multi -functional stadium from below to above in proper order, and the inside formation of bottom plate has second flow channel, one end of transportation pipeline is connected with second flow channel, and its other end is connected with first flow channel and / or is connected with external compressor, and the coolant of first flow channel and / or external compressor is transmitted to second flow channel through transportation pipeline to cool phase change material cold plate, realizes the quick condensation to the water that is sprayed on phase change material cold plate.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to an ice rink refrigeration system and a multi-functional sports venue. Background Technology

[0002] With the increasing demand for ice skating, the construction of ice and snow venues is also growing. Given the existing number of idle multi-purpose stadiums, the mainstream trend in new and renovated sports venues is to convert them into multi-functional venues that can be used for both ice rinks and other purposes. However, current refrigeration methods for ice rinks mainly rely on compressor refrigeration technology, such as the "Ice Rink Refrigeration System" disclosed in Chinese invention patent application CN115031454A. This refrigeration method requires a long time to achieve the required cooling effect in large sports venues, resulting in long cooling times, low venue utilization efficiency, and high energy consumption. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides an ice rink refrigeration system and a multi-functional sports venue, which solves the technical problems of long refrigeration time and high energy consumption in existing ice rinks that use compressor refrigeration.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] On the one hand, this utility model provides an ice rink cooling system, including:

[0006] The sky radiation cooling module is installed on the roof of a multi-functional sports stadium. The sky radiation cooling module has a first flow channel inside, which is filled with a refrigerant to absorb the cooling capacity generated by the sky radiation cooling module.

[0007] The phase change material ice-making module includes a base plate and a phase change material cold plate laid sequentially from bottom to top on the floor of the multi-functional sports stadium, and a second flow channel is formed inside the base plate;

[0008] A transport pipeline, one end of which is connected to the second flow channel, and the other end of which is connected to the first flow channel and / or to an external compressor, wherein the refrigerant of the first flow channel and / or the external compressor is transported through the transport pipeline to the second flow channel to cool the phase change material cold plate, thereby achieving rapid condensation of water sprayed on the phase change material cold plate.

[0009] In some embodiments, the sky radiation cooling module includes a top plate and a sky radiation coating layer. The top plate is disposed on the roof of the multi-functional stadium, and the sky radiation coating layer is applied to the exposed side of the top plate. A plurality of first flow channels are formed inside the top plate.

[0010] In some embodiments, the phase change material cold plate is composed of multiple cold plate units spliced ​​together, and each cold plate unit is movably laid on the base plate.

[0011] In some embodiments, each of the cold plate units includes a housing and a filler, wherein a cavity is formed inside the housing and the filler is filled in the cavity, and the filler is liquid or solid.

[0012] In some embodiments, a prefabrication module is also included for prefabricating the cold plate unit.

[0013] In some embodiments, the prefabricated module includes a first prefabricated unit and a second prefabricated unit. The first prefabricated unit is disposed around the perimeter of the multi-functional sports stadium, and the two ends of the second prefabricated unit are respectively connected to the transport pipeline to form a circulation pipeline.

[0014] In some embodiments, the first prefabricated unit includes a sky-radiation cooling plate, which is obliquely disposed around the perimeter of the multi-functional sports stadium. The sky-radiation cooling plate has a plurality of first slots on one side inside the multi-functional sports stadium, and the cooling plate unit is inserted into the first slots.

[0015] In some embodiments, the first prefabricated unit further includes an insulation layer that wraps around the bottom of the cold plate unit and the ends of the cold plate unit located on both sides.

[0016] In some embodiments, the second prefabricated unit includes a heat exchanger, the two ends of which are respectively connected to the transport pipeline, and a plurality of second slots are formed inside the heat exchanger, into which the cold plate unit is inserted.

[0017] On the other hand, the present invention provides a multi-functional sports stadium, which includes the ice rink refrigeration system described above.

[0018] Compared with the prior art, the beneficial effects of this utility model mainly include:

[0019] The ice rink refrigeration system provided by this utility model can increase the cooling capacity required to cool the phase change material cold plate in the phase change material ice-making module by setting up a sky radiation cooling module. Therefore, by combining the cooling capacity emitted by the sky radiation cooling module with the cooling capacity of traditional compression equipment, the phase change material cold plate can be cooled rapidly, which greatly reduces the power consumption of the compression equipment and thus reduces energy consumption. At the same time, this utility model can increase the heat exchange by having the surface of the phase change material cold plate in direct contact with water over a large area, so as to achieve rapid freezing of water and greatly shorten the ice-making time. Applying this ice-making system to multi-functional sports venues can facilitate the rapid conversion of sports venues between different functions and improve the efficiency of venue use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the ice rink refrigeration system described in this utility model applied to a sports stadium;

[0021] Figure 2 This is a schematic diagram of the structure of the first prefabricated unit of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the second prefabricated unit of this utility model.

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

[0024] 100. Sky radiation cooling module; 101. First flow channel; 110. Top plate; 120. Sky radiation coating layer;

[0025] 200, Phase change material ice-making module; 201, Second flow channel; 210, Base plate; 220, Phase change material cold plate;

[0026] 300. Transportation pipelines;

[0027] 400, First prefabricated unit; 401, First slot; 410, Sky radiation cooling panel; 420, Insulation layer;

[0028] 500, second prefabricated unit; 501, second slot; 510, heat exchanger. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] Currently, multi-functional sports stadiums have become the mainstream form of sports venues for both new construction and renovation. However, existing ice rink refrigeration systems mainly rely on compressor refrigeration technology. Applying this technology to converting current multi-functional stadiums into ice rinks results in long ice-making times, low venue conversion efficiency, and high energy consumption. To address this technical problem, this invention provides an ice rink refrigeration system and a multi-functional sports stadium equipped with this system. The ice rink refrigeration system combines radiative refrigeration technology with phase change material refrigeration technology, enabling efficient and low-energy ice-making.

[0031] like Figure 1 As shown, this utility model is an ice rink refrigeration system, including a sky radiation refrigeration module 100, a phase change material ice-making module 200, and a transport pipeline 300. The sky radiation refrigeration module 100 is installed on the roof of a multi-functional sports stadium. A first flow channel 101 is formed inside the sky radiation refrigeration module 100, and the first flow channel 101 is filled with a refrigerant. The refrigerant is used to absorb the refrigeration generated by the sky radiation refrigeration module 100. The phase change material ice-making module 200 includes components laid sequentially from bottom to top in the multi-functional sports stadium. The base plate 210 and the phase change material cold plate 220 are on the ground. The base plate 210 has a second flow channel 201 formed inside. One end of the transport pipe 300 is connected to the second flow channel 201, and the other end of the transport pipe 300 is connected to the first flow channel 101 and / or to an external compressor. The refrigerant in the first flow channel 101 and / or the external compressor is transported to the second flow channel 201 through the transport pipe 300 to cool the phase change material cold plate 220, thereby achieving rapid condensation of water sprayed on the phase change material cold plate 220.

[0032] The ice rink cooling system provided by this utility model can increase the cooling capacity of the phase change material cold plate 220 by the cooling capacity generated by the sky radiation cooling module 100, so that the phase change material cold plate 220 is cooled quickly, thereby reducing the power consumption of traditional compressors and reducing energy consumption. At the same time, this utility model can quickly freeze water into ice by having the surface of the phase change material cold plate 220 in direct contact with water over a large area, thus achieving rapid freezing of water. This cooling method greatly shortens the ice-making time, which is conducive to the rapid conversion of sports venues between different functions and ice rinks, and improves the utilization efficiency of the venue.

[0033] It should be noted that, theoretically, this utility model can be divided into two types: directly using the sky radiation cooling module 100 to cool the phase change material cold plate 220, or using the sky radiation cooling module 100 to assist in cooling based on a traditional compressor. However, since the cooling capacity may be insufficient in actual use due to the direct use of the sky radiation cooling module 100, this utility model preferably uses the sky radiation cooling module 100 in conjunction with a traditional compressor to cool the phase change material cold plate 220.

[0034] In one embodiment, the sky radiation cooling module 100 includes a top plate 110 and a sky radiation coating layer 120. The top plate 110 is disposed on the roof of the multi-functional stadium, and the sky radiation coating layer 120 is applied to the exposed side of the top plate 110. A plurality of first flow channels 101 are formed inside the top plate 110.

[0035] In one embodiment, the top plate 110 is a concrete layer. The first flow channel 101 is pre-reserved in the concrete layer when it is made. In actual use, a first pipeline can be set inside the first flow channel 101, and then the first pipeline is filled with a coolant. The first pipeline is connected to the transport pipeline 300 to transport the coolant in the first pipeline to the second flow channel 201.

[0036] In one embodiment, the sky radiation coating layer 120 is a radiation cooling material coating applied to the exposed side of the concrete layer after it has solidified. This radiation cooling material coating can radiate heat into outer space to achieve cooling. It uses an atmospheric window of 8-13 μm to dissipate infrared radiation into the low-temperature outer space (about 3K). With the help of surface materials with high emissivity and low absorptivity, the surface temperature can be reduced to 10-15°C lower than the ambient temperature during the nights of spring, autumn and winter, which is sufficient to allow the liquid phase change material in the phase change material cold plate 220 to solidify.

[0037] It is understandable that the radiation cooling materials in the above technical solutions are mainly divided into four types: photonic crystal materials, multilayer thin film materials, polymer composite materials, and random porous materials. A typical example of photonic crystal materials is silicon dioxide photonic crystal materials, a typical example of multilayer thin film materials is metal-dielectric multilayer film materials (such as Ag / SiO2, Al2O3 / TiO2), a typical example of polymer composite materials is polydimethylsiloxane, and a typical example of random porous materials is BaSO4 nanoparticle coating.

[0038] In one embodiment, the base plate 210 is also a concrete layer. The second flow channel 201 is pre-reserved in the concrete layer when the concrete is made. In actual use, a second pipeline can be set inside the second flow channel 201 to connect the second pipeline with the transport pipeline 300 so as to transport the refrigerant in the first pipeline to the second pipeline.

[0039] In one embodiment, the phase change material cold plate 220 is composed of multiple cold plate units spliced ​​together, and each cold plate unit is movably laid on the base plate 210 to facilitate quick installation and disassembly.

[0040] In one embodiment, each of the cold plate units includes a shell and a filler. A cavity is formed inside the shell, and the filler is placed within the cavity. The filler can be a liquid phase change material or a solid phase change material. Furthermore, both the liquid and solid phase change materials can be cooled by a refrigerant disposed in a second pipeline.

[0041] In one embodiment, the outer shell is made of a material that is not easily corroded and has good thermal conductivity, and the phase change material is a material with a melting point between -10°C and -5°C.

[0042] In the above technical solution, the cooling capacity generated by the sky radiation coating layer 120 cools the refrigerant in the first pipeline. The refrigerant is transferred to the second pipeline through the transport pipeline 300 to cool the liquid phase change material in the phase change material cold plate 220 or maintain the low temperature of the solid phase change material. Therefore, when water is spread on the upper surface of the phase change material cold plate 220, it can have a large area of ​​direct contact with water, and the heat conduction rate and heat conduction are large, which can quickly reduce the temperature of the water and make it freeze.

[0043] It is understood that the refrigerant used is a 40% aqueous solution of ethylene glycol.

[0044] In one embodiment, in order to shorten the icing time, the present invention also includes a prefabrication module for prefabricating the cold plate unit in advance.

[0045] In one embodiment, the prefabricated module includes a first prefabricated unit 400 and a second prefabricated unit 500. The first prefabricated unit 400 is disposed around the perimeter of the multi-functional sports stadium, and the two ends of the second prefabricated unit 500 are respectively connected to the transport pipeline 300 to form a circulation pipeline.

[0046] In one embodiment, such as Figure 2As shown, the first prefabricated unit 400 includes a sky-radiant cooling panel 410 and an insulation layer 420. The sky-radiant cooling panel 410 is inclined around the perimeter of the multi-functional sports stadium, with a preferred inclination angle of 15° (facing the sky). Multiple first slots 401 are formed on one side of the sky-radiant cooling panel 410 inside the multi-functional sports stadium, and the cooling panel unit is inserted into the first slots 401. The insulation layer 420 wraps around the bottom of the cooling panel unit and the ends of the cooling panel units on both sides. The insulation layer 420 is filled with polyurethane foam material (density 40 kg / m³). 3 The thermal conductivity is 0.022 W / (m·K).

[0047] In one embodiment, a 10mm gap is reserved between two adjacent first slots 401, and the gap is filled with a silicone sealing strip (thermal conductivity of 0.2w / (m·k)) to prevent the loss of cold energy.

[0048] In the above embodiment, the cold plate unit inserted into the first slot 401 is filled with liquid phase change material. The cooling capacity generated by the sky radiation cooling plate 410 can cool the liquid phase change material. When the cooled cold plate unit needs to be converted into an ice rink, it can be directly inserted into the bottom plate 210, which can further shorten the ice making time.

[0049] In one embodiment, such as Figure 3 As shown, the second prefabricated unit 500 includes a heat exchanger 510, the two ends of which are connected to the transport pipe 300 respectively. The heat exchanger 510 has a plurality of second slots 501 formed inside, and the cold plate unit is inserted into the second slots 501.

[0050] In the above technical solution, the heat exchanger 510 is installed in the pipeline connecting the transport pipeline 300 with the first pipeline and the second pipeline. That is, the refrigerant flowing out from the first pipeline can also flow into the heat exchanger 510, which can cool the cold plate unit inserted into the second slot 501. When the cooled cold plate unit needs to be converted into an ice rink, it can be directly inserted into the bottom plate 210, which can further shorten the ice-making time.

[0051] In one embodiment, control valves may be installed on the transport pipes 300 leading to the second pipe and the heat exchanger 510, respectively, to control whether the refrigerant enters as needed.

[0052] In one embodiment, a pump is also provided on the transport pipeline 300 to facilitate the transfer of refrigerant.

[0053] On the other hand, this utility model provides a multi-functional sports venue, including the ice rink refrigeration system described above.

[0054] The conversion process of the multifunctional sports stadium described in this utility model includes the following:

[0055] 1. Nighttime cooling storage stage

[0056] When the ambient temperature is ≤10℃ and the humidity is ≤60%, the sky radiation coating layer 120 radiates heat to space through the 8-13μm band, cooling the refrigerant in the first flow channel 101. When the pump and control valve on the transport pipe 300 are started, the refrigerant with the cold source flows from the first flow channel 101 through the transport pipe 300 to the second flow channel 201 and / or to the heat exchanger 510, cooling the phase change material cold plate 220 and the cold plate unit in the second slot 501, thus completing the solidification.

[0057] When the ambient temperature is ≤10℃ and the relative humidity is ≤60%, and there is no rainfall or strong wind (wind speed ≤3m / s), the sky radiation cooling plate 410 radiates heat into space through the 8-13μm band. Since the sky radiation cooling plate 410 is in direct contact with the cold plate unit, the cold plate unit can be solidified from liquid to solid through heat conduction. The insulation layer 420 can maintain the low temperature of the solidified cold plate unit. The insulation layer 420 limits the heat loss of the bottom and sides of the cold plate unit to ≤10%, so as to ensure that the nighttime cold storage efficiency reaches ≥90%.

[0058] 2. Ice-making stage

[0059] When a multi-functional sports stadium needs to be converted into an ice rink, deionized water can be sprayed onto the solidified phase change material cold plate 220 to quickly solidify the deionized water using the refrigeration properties of the phase change material; alternatively, the cold plate unit can be removed from the first slot 401 and the second slot 501 and laid flat on the base plate 210, where the solidified phase change material can quickly solidify the deionized water.

[0060] 3. Venues converted to other functions

[0061] When the ice rink is converted to another venue (e.g., from an ice rink to a basketball court), the control valve entering the second flow channel 201 is closed, the operation of the phase change material ice-making module 200 is stopped, the ice is manually broken and transported out of the venue, the phase change material cold plate 220 is then removed, and a removable sports wood floor is laid on the base plate 210. Meanwhile, the first prefabrication unit 400 and the second prefabrication unit 500 continue to work to solidify the cold plate unit in preparation for the rapid ice-making process when the basketball court is converted to an ice rink again.

[0062] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An ice rink refrigeration system, characterized in that, include: The sky radiation cooling module is installed on the roof of a multi-functional sports stadium. The sky radiation cooling module has a first flow channel inside, which is filled with a refrigerant to absorb the cooling capacity generated by the sky radiation cooling module. The phase change material ice-making module includes a base plate and a phase change material cold plate laid sequentially from bottom to top on the floor of the multi-functional sports stadium, and a second flow channel is formed inside the base plate; A transport pipeline, one end of which is connected to the second flow channel, and the other end of which is connected to the first flow channel and / or to an external compressor, wherein the refrigerant of the first flow channel and / or the external compressor is transported through the transport pipeline to the second flow channel to cool the phase change material cold plate, thereby achieving rapid condensation of water sprayed on the phase change material cold plate.

2. The ice rink refrigeration system according to claim 1, characterized in that, The sky radiation cooling module includes a top plate and a sky radiation coating layer. The top plate is installed on the roof of the multi-functional stadium. The sky radiation coating layer is applied to the exposed side of the top plate. Multiple first flow channels are formed inside the top plate.

3. The ice rink refrigeration system according to claim 1, characterized in that, The phase change material cold plate is composed of multiple cold plate units spliced ​​together, and each cold plate unit is movably laid on the base plate.

4. The ice rink refrigeration system according to claim 3, characterized in that, Each of the cold plate units includes a shell and a filler, the shell having a cavity inside, and the filler filling the cavity, the filler being liquid or solid.

5. The ice rink refrigeration system according to claim 4, characterized in that, It also includes a prefabrication module for prefabricating the cold plate unit.

6. The ice rink refrigeration system according to claim 5, characterized in that, The prefabricated module includes a first prefabricated unit and a second prefabricated unit. The first prefabricated unit is arranged around the multi-functional sports stadium, and the two ends of the second prefabricated unit are respectively connected to the transport pipeline to form a circulation pipeline.

7. The ice rink cooling system according to claim 6, characterized in that, The first prefabricated unit includes a sky radiation cooling plate, which is inclinedly arranged around the perimeter of the multi-functional stadium. The sky radiation cooling plate has multiple first slots on one side inside the multi-functional stadium, and the cooling plate unit is inserted into the first slots.

8. The ice rink refrigeration system according to claim 7, characterized in that, The first prefabricated unit also includes an insulation layer, which wraps around the bottom of the cold plate unit and the ends of the cold plate unit on both sides.

9. The ice rink refrigeration system according to claim 6, characterized in that, The second prefabricated unit includes a heat exchanger, with both ends of the heat exchanger connected to the transport pipeline. The heat exchanger has multiple second slots inside, and the cold plate unit is inserted into the second slots.

10. A multi-functional sports stadium, characterized in that, It includes the ice rink cooling system as described in any one of claims 1 to 9.

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