Row pipe assembly for refrigeration storage and refrigeration control system of refrigeration storage
The multi-layer pipe assembly with phase change material and controlled refrigerant flow addresses energy inefficiencies in cold storage systems, achieving efficient refrigeration and cold storage with reduced costs and improved temperature control.
Patent Information
- Application Number
- CN202421118774.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Cold storage refrigeration systems face high energy consumption due to frequent start-stop cycles and peak load demands, leading to increased operating costs and inefficient temperature maintenance, with existing pipe assemblies and cold storage plates having low heat exchange efficiency and frosting issues.
A multi-layer pipe assembly with inner and outer tubes and a phase change material-filled space, combined with refrigerant channels and fins, allows for efficient refrigeration and cold storage by absorbing and releasing cold during off-peak and peak periods, respectively, and includes a defrosting mechanism using temperature-controlled refrigerant.
The system enhances refrigeration efficiency, reduces energy consumption, and lowers operating costs by optimizing cold storage and defrosting processes, while maintaining temperature stability and improving heat exchange area and uniformity.
Smart Images
Figure CN222278994U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cold storage refrigeration technology, and in particular to a pipe assembly for a cold storage and a refrigeration control system for the cold storage. Background Art
[0002] With the global emphasis on energy conservation and emission reduction, cold storage refrigeration technology is developing towards a higher energy efficiency ratio. When dealing with large temperature differences between day and night and obvious differences in electricity consumption between peak and valley, the relevant cold storage needs to frequently start and stop the refrigeration device, resulting in high energy consumption. In addition, due to the operating characteristics of the cold storage, the load is generally large during peak electricity hours, resulting in higher electricity bills, thereby increasing the operating costs of the cold storage.
[0003] Based on this, the present application provides a pipe assembly for a cold storage and a refrigeration control system for the cold storage to improve the relevant technology. Utility Model Content
[0004] The purpose of the present application is to provide a pipe assembly for a cold storage and a refrigeration control system for the cold storage, thereby improving refrigeration efficiency.
[0005] The purpose of this application is achieved by the following technical solutions:
[0006] In a first aspect, the present application provides a pipe assembly for a cold storage, which is used to achieve refrigeration and cold storage of the cold storage, and the pipe assembly includes:
[0007] A first inner tube is formed with a first flow channel, and a first refrigerant medium flows in the first flow channel;
[0008] A second inner tube is sleeved on the outer side of the first inner tube and forms a containing space with the first inner tube, wherein the containing space is filled with a phase change material for cold storage;
[0009] The outer tube is sleeved on the outer side of the second inner tube and forms a second flow channel with the second inner tube. A second refrigerant medium flows in the second flow channel.
[0010] In some embodiments, the row tube assembly further includes at least one first tube fin, wherein the first tube fin is connected to the outer wall of the second inner tube and extends through the second flow channel to the outside of the outer tube.
[0011] In some embodiments, there are multiple first tube fins, and the multiple first tube fins are evenly distributed along the outer wall of the second inner tube.
[0012] In some embodiments, the number of the first tube fins is two, and the two first tube fins are arranged on the same straight line.
[0013] In some embodiments, the tube assembly further includes at least one second tube fin, a first end of the second tube fin being connected to an outer wall of the first inner tube, and a second end of the second tube fin being connected to an inner wall of the second inner tube.
[0014] In some embodiments, there are multiple second tube fins, and the multiple second tube fins are evenly distributed along the outer wall of the first inner tube and the inner wall of the second inner tube.
[0015] In some embodiments, the width direction of the first tube fin is the same as the radial direction of the second inner tube; and / or,
[0016] The width direction of the second tube fin is the same as the radial direction of the first inner tube and the second inner tube.
[0017] In some embodiments, central axes of the first inner tube, the second inner tube, and the outer tube coincide.
[0018] In some embodiments, the corresponding refrigeration device and / or defrosting device of the cold storage is used to provide the second refrigerant medium with different temperatures for the second flow channel to achieve refrigeration for the cold storage or defrosting for the drain pipe assembly.
[0019] In a second aspect, an embodiment of the present application further provides a refrigeration control system for a cold storage, comprising a refrigeration device, a defrosting device, and the drain pipe assembly described in the first aspect above;
[0020] The refrigeration device is used to provide a first refrigeration medium for the first flow channel, and the refrigeration device and / or the defrost device are used to provide a second refrigeration medium with a different temperature for the second flow channel.
[0021] The present application provides a pipe assembly for a cold storage and a refrigeration control system for the cold storage, wherein the pipe assembly includes a first inner tube, a second inner tube sleeved on the outside of the first inner tube, and an outer tube sleeved on the outside of the second inner tube, a first flow channel is formed in the first inner tube, a first refrigerant medium flows in the first flow channel, a containing space is formed between the second inner tube and the first inner tube, a phase change material for cold storage is filled in the containing space, a second flow channel is formed between the outer tube and the second inner tube, a second refrigerant medium flows in the second flow channel. The pipe assembly of the present application combines refrigeration and cold storage, not only improving the refrigeration efficiency by setting a multi-layer flow channel, but also cooperating with the phase change material to achieve cold storage, so that the phase change material absorbs and stores the cold of the first refrigerant medium and the second refrigerant medium during the off-peak period, and releases the cold to cool the cold storage during the peak period, thereby reducing the power consumption and the operating cost of the cold storage. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The present application is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0023] Figure 1 It is a structural schematic diagram of a pipe arrangement assembly for a cold storage provided in an embodiment of the present application.
[0024] Figure 2 yes Figure 1 Side cross-sectional view of .
[0025] Figure 3 It is a structural schematic diagram of the connection between a first inner tube, a second inner tube and an outer tube in a pipe assembly of a cold storage provided in an embodiment of the present application.
[0026] Figure 4 It is a structural schematic diagram of the connection between a first inner tube, a second inner tube, an outer tube and a first tube fin in a tube assembly of a cold storage provided in an embodiment of the present application.
[0027] Figure 5 It is a structural schematic diagram of the position distribution of a second tube fin in a pipe assembly of a cold storage provided in an embodiment of the present application.
[0028] Figure 6 It is a structural schematic diagram of another pipe arrangement assembly for a cold storage provided in an embodiment of the present application.
[0029] In the figure: 100, first inner tube; 101, first flow channel; 200, second inner tube; 201, accommodating space; 300, outer tube; 301, second flow channel; 400, first tube fin; 500, second tube fin. DETAILED DESCRIPTION
[0030] The following will clearly and completely describe the technical solutions in the implementation modes of the present application in conjunction with the drawings in the present application. Obviously, the described implementation modes are only part of the implementation modes of the present application, rather than all the implementation modes.
[0031] In the description of the embodiments of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0032] In the current field of cold storage refrigeration technology, high efficiency and energy conservation and emission reduction have become important development trends. The relevant cold storage refrigeration technology can adopt two methods: fan and pipe refrigeration. Most cold storages use pipe assemblies. When the cold storage is in operation, in order to maintain the temperature of the cold storage within a certain range, the refrigeration device needs to be started and stopped frequently, resulting in low energy efficiency. Moreover, due to the operating characteristics of the cold storage, the cold storage has a large load during peak power hours, resulting in high electricity bills. At present, cold storage plates are attached to the walls around the cold storage, but the cold storage plates achieve cold storage through convection heat exchange with the air in the cold storage, and the heat exchange efficiency is low. At the same time, the entry and exit of goods will bring external heat into the cold storage, affecting the stability of the temperature in the storage, and then affecting the quality of the stored items. In addition, the relevant pipe assemblies are often inefficient in dealing with frosting problems, which affects the refrigeration efficiency and increases the system operation cost.
[0033] See also Figures 1 to 3 , Figure 1 1 is a schematic diagram of the structure of a pipe assembly for a cold storage provided in an embodiment of the present application. Figure 2 yes Figure 1 A side cross-sectional view of Figure 3 It is a structural schematic diagram of the connection between a first inner tube, a second inner tube and an outer tube in a pipe assembly of a cold storage provided in an embodiment of the present application.
[0034] Please combine Figures 1 to 3 An embodiment of the present application provides a row pipe assembly for a cold storage, which is used to achieve refrigeration and cold storage of the cold storage. The row pipe assembly includes a first inner tube 100, a second inner tube 200 and an outer tube 300.
[0035] A first flow channel 101 is formed in the first inner tube 100, and a first refrigerant flows in the first flow channel 101. The second inner tube 200 is sleeved on the outside of the first inner tube 100, and a containing space 201 is formed between the second inner tube 200 and the first inner tube 100, and a phase change material for cold storage is filled in the containing space 201. The outer tube 300 is sleeved on the outside of the second inner tube 200, and a second flow channel 301 is formed between the second inner tube 200 and the second inner tube 200, and a second refrigerant flows in the second flow channel 301.
[0036] When the cold storage is refrigerated through the first flow channel 101 and the second flow channel 301, the first refrigerant in the first flow channel 101 can be in a flowing liquid state, and the second refrigerant in the second flow channel 301 can be in a flowing liquid or gas state. The temperature of the first refrigerant and the second refrigerant and the phase change temperature of the phase change material can be determined according to the temperature required by the cold storage. For example, when the cold storage is -18 to -20°C, the temperature of the first refrigerant and the second refrigerant can be set to -25 to -30°C, and the phase change material with a phase change temperature of -18 to -20°C can be filled. The first inner tube 100, the second inner tube 200 and the outer tube 300 can be one or more of an aluminum alloy tube, a seamless carbon steel tube and a stainless steel tube. The first refrigerant can be a first refrigerant or a first coolant, and the second refrigerant can be a second refrigerant or a second coolant. Specifically, when the first refrigerant circulates in the first flow channel, the second refrigerant or the second coolant can circulate in the second flow channel. When the first coolant flows in the first flow channel, the second refrigerant or the second coolant may flow in the second flow channel. The first refrigerant and the second refrigerant may be the same refrigerant or different refrigerants. The first coolant and the second coolant may be the same coolant or different coolants.
[0037] When the cold storage is in the off-peak period, the refrigeration device of the cold storage can continuously provide the first flow channel 101 and the second flow channel 301 with the first refrigerant and the second refrigerant, and the cold storage is refrigerated by the circulation of the first refrigerant and the second refrigerant. At the same time, the phase change material will absorb and store the cold of the first refrigerant and the second refrigerant. When the cold storage is in peak power, the refrigeration device of the cold storage can be turned off, and only the cold energy is released to the cold storage through the cold storage material, so as to achieve refrigeration of the cold storage. When the first refrigerant circulating in the first flow channel and the second refrigerant circulating in the second flow channel are the same, for example, the first refrigerant circulates in the first flow channel and the second refrigerant circulates in the second flow channel, the first refrigerant and the second refrigerant are the same refrigerant. During the cooling and cold storage process, the temperatures of the first refrigerant and the second refrigerant are the same. During defrosting, the heat generated by the refrigeration device of the cold storage during compression refrigeration is recovered through the defrost device of the cold storage. The defrost device of the cold storage continuously provides the second refrigerant with a temperature of 20 to 40° C. to the second flow channel, thereby realizing the defrosting cycle of the outer pipe 300.
[0038] In the above embodiment, the first inner tube 100 is provided to form the first flow channel 101, the second inner tube 200 is provided to form a containing space 201 for filling the phase change material with the first inner tube 100, and the outer tube 300 is provided to form the second flow channel 301 with the second inner tube 200. Compared with only providing the first flow channel 101 to refrigerate the cold storage, the heat exchange area is increased and the refrigeration efficiency is improved. Compared with only providing the first flow channel 101 and the containing space 201, when the first flow channel 101 releases cold to the cold storage, the phase change material will absorb part of the cold, resulting in less cold actually obtained by the cold storage. The second flow channel 301 can release cold to the cold storage through the second flow channel 301 at the same time, thereby improving the refrigeration efficiency. In addition, the phase change material filled in the cooperative accommodating space 201 realizes cold storage, so that the row pipe assembly of the above embodiment organically combines refrigeration and cold storage, so that the row pipe assembly can complete cold storage during off-peak hours, and realize refrigeration of the cold storage through the release of cold by the phase change material during peak hours, thereby reducing electricity consumption and greatly reducing the operating cost of the cold storage.
[0039] See also Figure 4 , Figure 4 It is a structural schematic diagram of the connection between a first inner tube, a second inner tube, an outer tube and a first tube fin in a tube assembly of a cold storage provided in an embodiment of the present application.
[0040] In order to improve the refrigeration efficiency of phase change materials for cold storage, please combine Figure 1 and Figure 4 In some embodiments, the row tube assembly further includes at least one first tube fin 400, which is connected to the outer wall of the second inner tube 200 and extends to the outer side of the outer tube 300 through the second flow channel 301. The first tube fin 400 can increase the heat exchange area between the phase change material and the air of the cold storage. When the phase change material releases cold into the cold storage, the cold energy of the phase change material can be first transferred to the tube wall of the second inner tube 200, and then transferred to the first tube fin 400 via the tube wall of the second inner tube 200. The side of the first tube fin 400 away from the second inner tube 200 directly contacts the air, thereby cooling the air. At the same time, the cold energy of the phase change material will also be transferred to the second flow channel 301 via the tube wall of the second inner tube 200, and then contact the air through the tube wall of the outer tube 300 to achieve cooling of the air. The length direction of the first tube fin 400 can be the same as the tube length direction of the second inner tube 200, and the number of the first tube fin 400 can be set to one or more. The widths of the first tube fins 400 may be equal or unequal.
[0041] In order to make the phase change material release cold to the cold storage more uniformly, in some embodiments, the number of the first tube fins 400 is multiple, and the multiple first tube fins 400 are evenly distributed along the outer wall of the second inner tube 200. The provision of multiple first tube fins 400 can increase the contact area with the air, thereby improving the heat exchange efficiency. Each first tube fin 400 can be used as an independent heat transfer surface, and the accumulation of multiple first tube fins 400 greatly increases the total heat transfer area. The uniform distribution of the first tube fins 400 helps to form a more stable air flow pattern, reduces the dead zone of air flow, promotes the turbulence of air between adjacent first tube fins 400, enhances the convective heat transfer effect, and makes the heat transfer between the higher temperature air and the lower temperature air in the cold storage more rapid, thereby accelerating the efficiency of refrigeration. The number of the first tube fins 400 can be determined according to factors such as the diameter of the second inner tube 200 and the outer tube 300 and the required temperature of the cold storage, and can be set to 2, 3, 4, etc.
[0042] To improve the efficiency of the pipe assembly during defrosting, in some embodiments, Figure 1 and Figure 4 As shown, the number of the first tube fins 400 is two, and the two first tube fins 400 are arranged on the same straight line. During the refrigeration process, the temperature of the surface of the row pipe assembly may be lower than the temperature of the air in the cold storage, and the moisture in the air will condense on the surface of the row pipe assembly and form a frost layer. The thermal conductivity of frost is much lower than that of metal. Therefore, the gradually thickening frost layer will become a heat-insulating layer, reducing the efficiency of the row pipe assembly in transferring cold to the air in the cold storage. At this time, the row pipe assembly needs to be defrosted, and the relevant defrosting can be performed by hot air defrosting, electric defrosting or water defrosting, etc., but the above-mentioned defrosting methods require the introduction of additional media or instruments, which reduces the efficiency of defrosting. The above-mentioned embodiment provides a second refrigerant medium with a higher temperature for the second flow channel 301 of the row pipe assembly through the defrosting device of the cold storage, and can transfer heat to the outer tube 300 through the second refrigerant medium to melt the frost layer attached to the wall of the outer tube 300.
[0043] The two first tube fins 400 in the above embodiment extend to the outside of the outer tube 300, that is, the tube wall of the outer tube 300 is divided into two parts, and the frost layer is also formed into two parts. When the frost layer melts, the two frost layers are easily peeled off from the outer tube 300. The heat of the second refrigerant is transferred to the frost layer through the two first tube fins 400, so that the part of the frost layer directly in contact with the first tube fins 400 is easier to melt, thereby improving the defrosting efficiency.
[0044] See also Figure 5 and Figure 6 , Figure 5 1 is a schematic diagram of the position distribution of a second tube fin in a cold storage tube assembly provided in an embodiment of the present application. Figure 6It is a structural schematic diagram of another pipe arrangement assembly for a cold storage provided in an embodiment of the present application.
[0045] Please combine Figure 1 , Figure 5 and Figure 6 In order to improve the cold storage efficiency of the phase change material, in some embodiments, the row tube assembly further includes at least one second tube fin 500, the first end of the second tube fin 500 is connected to the outer wall of the first inner tube 100, and the second end of the second tube fin 500 is connected to the inner wall of the second inner tube 200. The provision of the second tube fin 500 increases the heat exchange area between the phase change material and the first flow channel 101 and the second flow channel 301. The phase change material absorbs the cold energy of the first refrigerant medium in the first flow channel 101 through the first inner tube 100, and absorbs the cold energy of the second refrigerant medium in the second flow channel 301 through the second inner tube 200. After the second tube fin 500 is added, the cold energy of the first refrigerant medium and the second refrigerant medium will also be transferred to the second tube fin 500 through the first inner tube 100 and the second inner tube 200, respectively, thereby increasing the heat exchange area and improving the cold storage efficiency of the phase change material.
[0046] To improve the uniformity of cold storage of the phase change material, in some embodiments, as Figure 1 and Figure 5 As shown, the number of the second tube fins 500 is multiple, and the multiple second tube fins 500 are evenly distributed along the outer wall of the first inner tube 100 and the inner wall of the second inner tube 200. When the cold storage is in the off-peak period, the refrigeration device of the cold storage provides the first flow channel 101 and the second flow channel 301 with a lower temperature first refrigerant medium and the second refrigerant medium respectively, and the phase change material absorbs and stores the cold of the first refrigerant medium and the second refrigerant medium. Through the uniform distribution of the second tube fins 500, the phase change material is evenly divided into several parts of the same size, so that the temperature and state changes of the phase change materials in different parts can be roughly synchronized, and the temperature and state changes of the phase change materials in each part will not have a large difference, thereby improving the cold storage efficiency of the phase change material while ensuring the uniformity of the cold storage of the phase change material.
[0047] In order to reduce the manufacturing cost of the first tube fin 400 and the second tube fin 500, Figure 1 , Figures 4 to 6In some embodiments, the width direction of the first tube fin 400 is the same as the radial direction of the second inner tube 200; and / or, the width direction of the second tube fin 500 is the same as the radial direction of the first inner tube 100 and the second inner tube 200. There are three ways of the above embodiment, which can be understood as follows: the first is that the width direction of the first tube fin 400 is the same as the radial direction of the second inner tube 200, but the direction of the second tube fin 500 is not limited; the second is that the width direction of the second tube fin 500 is the same as the radial direction of the first inner tube 100 and the second inner tube 200, but the direction of the first tube fin 400 is not limited; the third is that the width direction of the first tube fin 400 is the same as the radial direction of the second inner tube 200, and the width direction of the second tube fin 500 is the same as the radial direction of the first inner tube 100 and the second inner tube 200. Taking the first inner tube 100 and the second inner tube 200 as round tubes, the first tube fin 400 and the second tube fin 500 as strips with a certain width as an example, the length direction of the first tube fin 400 can be the same as the tube length direction of the second inner tube 200, and the width direction of the first tube fin 400 is the same as the radial direction of the second inner tube 200, that is, the first tube fin 400 and the second inner tube 200 are in a state of intersecting through the center of the circle. The length direction of the second tube fin 500 can be the same as the tube length direction of the first inner tube 100 and the second inner tube 200, and the width direction of the second tube fin 500 is the same as the radial direction of the first inner tube 100 and the second inner tube 200, that is, the second tube fin 500 and the first inner tube 100 and the second inner tube 200 are in a state of intersecting through the center of the circle. At this time, the first tube fin 400 and the second tube fin 500 can be used as heat transfer media to increase the cold storage rate, ensure the cooling speed of the cold storage, and reduce the storage temperature fluctuation. At the same time, the heat exchange area of the pipeline is reduced, saving material costs.
[0048] In order to reduce the resistance encountered by the first refrigerant medium and the second refrigerant medium during circulation and improve the aesthetics of the pipe assembly, Figure 1 and Figure 3As shown, in some embodiments, the central axes of the first inner tube 100, the second inner tube 200 and the outer tube 300 coincide. The flow of the first refrigerant medium and the second refrigerant medium in the first flow channel 101 and the second flow channel 301 can be ensured, and the flow resistance is reduced, thereby reducing energy consumption. The central axes of the first inner tube 100, the second inner tube 200 and the outer tube 300 are arranged to coincide, and the uniformity of heat transfer can also be ensured. The vertical distance between the outer wall of the first inner tube 100 and the inner wall of the second inner tube 200 is equal, so that the speed at which the phase change material between the first inner tube 100 and the second inner tube 200 absorbs cold is roughly the same. The vertical distance between the outer wall of the second inner tube 200 and the inner wall of the outer tube 300 is equal, so that the flow state of the second refrigerant medium is approximately laminar flow with less resistance. The finally formed row pipe assembly is displayed in a symmetrical state, and the aesthetics of the row pipe assembly can also be improved. In a possible implementation, the first inner tube 100 , the second inner tube 200 , and the outer tube 300 are circular tubes, and the centers of the first inner tube 100 , the second inner tube 200 , and the outer tube 300 are the same.
[0049] In order to improve the utilization rate of the pipe assembly, in some embodiments, the corresponding refrigeration device and / or defrosting device of the cold storage is used to provide the second refrigerant medium of different temperatures to the second flow channel 301, so as to realize refrigeration of the cold storage or defrosting of the pipe assembly. The temperature of the second refrigerant medium circulating in the second flow channel 301 can be of two types, one is a lower temperature situation, for example, it can be -25 to -30 ° C, which can be used to refrigerate the cold storage, and the other is a higher temperature situation, for example, it can be 20 to 40 ° C, which can be used to defrost the pipe assembly. Specifically, the second flow channel 301 can be provided with a lower temperature second refrigerant by the refrigeration device of the cold storage, and the second flow channel 301 can be passed through the second refrigerant medium with a higher temperature by the defrosting device of the cold storage. In the above embodiment, the refrigeration of the cold storage and the defrosting of the pipe assembly are realized only by changing the temperature of the second refrigerant medium, and no other medium is introduced into the second flow channel 301.
[0050] In a possible implementation, a three-way electric valve or solenoid valve may be provided on the tube wall of the outer tube 300, with two inlets and one outlet, the two inlets are connected to the refrigeration device and the defrosting device of the cold storage, respectively, and one outlet is connected to the second flow channel 301. When the cold storage needs to be refrigerated, the inlet connected to the refrigeration device is opened, the inlet connected to the defrosting device is closed, and the refrigeration device provides the second flow channel 301 with a lower temperature second refrigerant. When the drain pipe assembly needs to be defrosted, the inlet connected to the defrosting device is opened, the inlet connected to the refrigeration device is closed, and the defrosting device provides the second flow channel 301 with a higher temperature second refrigerant.
[0051] The present application also provides a pipe assembly for a cold storage, which is used to achieve refrigeration and cold storage in the cold storage. Figure 1 and Figure 5 The tube assembly includes a first inner tube 100 , a second inner tube 200 , an outer tube 300 , a first tube fin 400 and a second tube fin 500 .
[0052] The first inner tube 100 forms a first flow channel 101, and a first refrigerant flows in the first flow channel 101. The first refrigerant is provided by a corresponding refrigeration device of the cold storage, and the refrigeration device can provide the first refrigerant of corresponding temperature to the first flow channel 101 according to the temperature required to be maintained in the cold storage.
[0053] The second inner tube 200 is sleeved on the outside of the first inner tube 100, and a containing space 201 is formed between the second inner tube 200 and the first inner tube 100, and the containing space 201 is filled with a phase change material for cold storage. The corresponding refrigeration device and / or defrosting device of the cold storage is used to provide a second refrigerant of different temperatures to the second flow channel 301, so as to realize refrigeration for the cold storage or defrosting for the pipe assembly. The temperature of the second refrigerant provided by the defrosting device is higher than the temperature of the second refrigerant provided by the refrigeration device.
[0054] The outer tube 300 is sleeved on the outer side of the second inner tube 200 and forms a second flow channel 301 with the second inner tube 200. The second refrigerant flows in the second flow channel 301. The central axes of the first inner tube 100, the second inner tube 200 and the outer tube 300 coincide with each other.
[0055] The number of the first tube fin 400 is at least one, and the first tube fin 400 is connected to the outer wall of the second inner tube 200 and extends to the outer side of the outer tube 300 through the second flow channel 301. When the number of the first tube fin 400 is multiple, the multiple first tube fins 400 are evenly distributed along the outer wall of the second inner tube 200. Specifically, as Figure 1 As shown, there are two first tube-fins 400 , and the two first tube-fins 400 are arranged on the same straight line. The width direction of the first tube-fin 400 is the same as the radial direction of the second inner tube 200 .
[0056] The number of the second tube fin 500 is at least one, the first end of the second tube fin 500 is connected to the outer wall of the first inner tube 100, and the second end of the second tube fin 500 is connected to the inner wall of the second inner tube 200. When the number of the second tube fin 500 is multiple, the multiple second tube fins 500 are evenly distributed along the outer wall of the first inner tube 100 and the inner wall of the second inner tube 200. Specifically, as Figure 1 As shown, there are four second tube fins 500, which are evenly distributed along the outer wall of the first inner tube 100 and the inner wall of the second inner tube 200. The width direction of the second tube fin 500 is the same as the radial direction of the first inner tube 100 and the second inner tube 200.
[0057] In the above embodiments, in order to improve the energy efficiency and service life of the pipe assembly, the circulation state of the first refrigerant medium and the second refrigerant medium can also be optimized, for example, an intelligent control system is introduced to adjust the flow and pressure of the first refrigerant medium and the second refrigerant medium to achieve real-time on-demand refrigeration and reduce energy consumption. At the same time, the selection of phase change materials should take into account their thermal conductivity and long-term stability. The introduction of environmentally friendly phase change materials not only improves the cold storage efficiency, but also ensures environmental friendliness. In addition, in order to increase the adaptability of the pipe assembly to different cold storages, for example, a modular design can be developed so that the pipe assembly can be flexibly configured and combined according to the actual capacity and refrigeration requirements of the cold storage to improve flexibility. In addition, a remote monitoring and fault warning system can be integrated, and the Internet of Things technology can be used to monitor the operating status of the pipe assembly in real time, prevent maintenance in advance, ensure the continuity and safety of the cold storage operation, and provide users with a more intelligent, efficient and energy-saving cold storage solution.
[0058] The embodiment of the present application also provides a refrigeration control system for a cold storage, including a refrigeration device, a defrosting device and a pipe assembly of any of the above items; the refrigeration device is used to provide a first refrigerant medium for the first flow channel 101, and the refrigeration device and / or the defrosting device are used to provide a second refrigerant medium with different temperatures for the second flow channel 301. In the refrigeration control system of the cold storage, the required heat exchange area can be calculated according to the load of the cold storage, and the amount and diameter of the pipe assembly can be determined. The first flow channel 101 and the second flow channel 301 in the pipe assembly are connected to the refrigeration device at the same time, and the second flow channel 301 is connected to the defrosting device in parallel. The hot and cold switching of the second flow channel 301 can be achieved by a valve (such as a solenoid valve or an electric valve). In the use stage, the first refrigerant medium with a lower temperature passes through the first flow channel 101, and the second refrigerant medium with a lower temperature passes through the second flow channel 301, and the first tube fin 400 is combined to cool the cold storage and store cold for the phase change material. A second tube fin 500 is provided in the phase change material between the first flow channel 101 and the second flow channel 301, which can increase the cold storage rate. The refrigeration control system of the cold storage can start the refrigeration device during off-peak hours to store cold for the phase change material, and shut down the refrigeration device during peak hours, using the phase change material to melt and release cold, directly transferring the cold to the air in the cold storage through the first tube fin 400, and transferring the cold to the air in the cold storage through the second flow channel 301 through the second tube fin 500. When frost forms on the surface of the row pipe assembly, the refrigeration device is stopped from providing the second refrigerant with a lower temperature to the second flow channel 301, and the defrosting device is turned on to provide the second refrigerant with a higher temperature to the second flow channel 301 to achieve defrosting.
[0059] It should be understood that the specific examples in this specification are only intended to help those skilled in the art to better understand the implementation methods of the present application, rather than to limit the scope of protection of the present application.
[0060] It can be understood that the various implementation modes described in this specification can be implemented individually or in combination, and this application is not limited to this.
[0061] Unless otherwise specified, all technical and scientific terms used in this specification have the same meaning as those generally understood by those skilled in the art of the technical field of this specification. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the scope of this specification. The term "and / or" used in this specification includes any and all combinations of one or more related listed items. The singular forms of "a", "above", and "the" used in this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.
[0062] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of each embodiment described above can refer to the corresponding process in other embodiments and will not be repeated here.
[0063] In the several embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways.
[0064] The above are only specific implementations of this specification, but the protection scope of this application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in this specification, which should be included in the protection scope of this specification. Therefore, the protection scope of this application should be based on the protection scope of the claims.
Claims
1. A pipe assembly for cold storage, characterized in that: For realizing refrigeration and cold storage of the cold storage, the pipe assembly comprises: A first inner tube is formed with a first flow channel, and a first refrigerant medium flows in the first flow channel; A second inner tube is sleeved on the outer side of the first inner tube and forms a containing space with the first inner tube, wherein the containing space is filled with a phase change material for cold storage; The outer tube is sleeved on the outer side of the second inner tube and forms a second flow channel with the second inner tube. A second refrigerant medium flows in the second flow channel.
2. The pipe assembly according to claim 1, characterized in that: The tube assembly further includes at least one first tube fin, which is connected to the outer wall of the second inner tube and extends through the second flow channel to the outside of the outer tube.
3. The pipe assembly according to claim 2, characterized in that: There are multiple first tube fins, and the multiple first tube fins are evenly distributed along the outer wall of the second inner tube.
4. The pipe assembly according to claim 2, characterized in that: The number of the first tube fins is two, and the two first tube fins are arranged on the same straight line.
5. The pipe assembly according to claim 2, characterized in that: The tube assembly further includes at least one second tube fin, a first end of the second tube fin being connected to the outer wall of the first inner tube, and a second end of the second tube fin being connected to the inner wall of the second inner tube.
6. The pipe assembly according to claim 5, characterized in that: There are multiple second tube fins, and the multiple second tube fins are evenly distributed along the outer wall of the first inner tube and the inner wall of the second inner tube.
7. The row pipe assembly according to claim 5, characterized in that: The width direction of the first tube fin is the same as the radial direction of the second inner tube; and / or, The width direction of the second tube fin is the same as the radial direction of the first inner tube and the second inner tube.
8. The pipe assembly according to claim 1, characterized in that: Central axes of the first inner tube, the second inner tube and the outer tube coincide with each other.
9. The pipe assembly according to claim 1, characterized in that: The corresponding refrigeration device and / or defrosting device of the cold storage is used to provide the second refrigeration medium with different temperatures for the second flow channel, so as to realize refrigeration for the cold storage or defrosting for the pipe assembly.
10. A refrigeration control system for a cold storage, characterized in that: It comprises a refrigeration device, a defrosting device and a pipe assembly as claimed in any one of claims 1 to 9; The refrigeration device is used to provide a first refrigeration medium for the first flow channel, and the refrigeration device and / or the defrost device are used to provide a second refrigeration medium with a different temperature for the second flow channel.