Heat exchange assembly and low-temperature storage container

Abstract

The utility model discloses a heat exchange assembly and a low-temperature storage container. The heat exchange assembly comprises a barrel with a first end and a second end which are oppositely arranged; the liquid separation communication ring pipe is arranged at the first end of the barrel and comprises a liquid inlet; the backflow communicating ring pipe is arranged at the second end of the barrel and comprises a liquid outlet; the plurality of circulating pipes are arranged on the surface of the cylinder body, one end of each circulating pipe is communicated with the liquid separation communication ring pipe, and the other end of each circulating pipe is communicated with the backflow communication ring pipe; the fixing assembly is arranged on the side, away from the barrel, of the runner pipe and connected with the barrel to fix the runner pipe. The heat exchange assembly is beneficial for guaranteeing the uniformity of the temperature of the barrel, improving the heat exchange efficiency and reducing the heat transfer loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of storage equipment, in particular to a heat exchange assembly and a low-temperature storage container. BACKGROUND

[0002] The heat exchange assembly of the existing low-temperature storage container, such as the liquid nitrogen cold screen, adopts a series form for the cooling pipe of the cold screen, which causes uneven distribution of the cooling medium flow on the cold screen, a long flow path and a large flow resistance of the cooling medium in a single pre-cooling cycle, and a large heat loss between the cooling pipe of the cold screen and the cold screen, and a high overall temperature and uneven temperature distribution of the cold screen. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heat exchange assembly and a low-temperature storage container to solve the technical problem of large heat loss of the existing storage equipment.

[0004] To solve the above technical problem, one technical solution adopted by the present application is: a heat exchange assembly, comprising: a cylinder body comprising a first end and a second end arranged oppositely; a liquid distribution and communication ring pipe arranged at the first end of the cylinder body; the liquid distribution and communication ring pipe comprises a liquid inlet; a backflow communication ring pipe arranged at the second end of the cylinder body; the backflow communication ring pipe comprises a liquid outlet; a plurality of flow pipes, one end of each of the flow pipes is in communication with the liquid distribution and communication ring pipe, and the other end of each of the flow pipes is in communication with the backflow communication ring pipe; the flow pipes are arranged on the surface of the cylinder body; a fixing assembly arranged on the side of the flow pipes away from the cylinder body; the fixing assembly is connected with the cylinder body to fix the flow pipes.

[0005] In a specific embodiment, the flow pipes are arranged in close contact with the cylinder body.

[0006] In a specific embodiment, the fixing assembly comprises a first fixing member and / or a second fixing member; the first fixing member comprises a first part and a second part, the first part and the second part are arranged side by side along a direction perpendicular to the extension direction of the flow pipes, the end of the first part away from the second part is electrically welded to the cylinder body, the end of the second part away from the first part is electrically welded to the cylinder body, and the first part and the second part are electrically welded to each other; the second fixing member comprises a first part and a second part arranged on both sides of the first part, the first part is arranged in close contact with the flow pipes, and the two second parts are riveted to the cylinder body.

[0007] In a specific embodiment, a plurality of first fixing members and a plurality of second fixing members are arranged along the extension direction of the flow pipes, and the first fixing members and the second fixing members are arranged alternately.

[0008] In an embodiment, the heat exchange assembly comprises a plurality of the flow pipes, and the plurality of the flow pipes are arranged at equal intervals along the circumferential direction of the cylinder.

[0009] In an embodiment, the heat exchange assembly further comprises an inlet pipe and an outlet pipe; the inlet pipe is in communication with the inlet port of the distribution communication ring pipe; the outlet pipe is in communication with the outlet port of the return communication ring pipe; the end of the inlet pipe away from the distribution communication ring pipe and the end of the outlet pipe away from the return communication ring pipe are located at the same end of the cylinder.

[0010] In an embodiment, the inlet pipe, the distribution communication ring pipe, and the flow pipe are located outside the cylinder, and the return communication ring pipe is located inside the cylinder.

[0011] In an embodiment, the end of the cylinder has a recessed notch for connecting the flow pipe outside the cylinder with the return communication ring pipe inside the cylinder.

[0012] In an embodiment, the inlet pipe, the distribution communication ring pipe, the flow pipe, the return communication ring pipe, and the outlet pipe are all located outside the cylinder.

[0013] To solve the above technical problems, another technical solution adopted by the present application is a low-temperature storage container comprising the heat exchange assembly as described above.

[0014] The present application has the following beneficial effects: the heat exchange assembly of the present application can ensure the uniformity of the distribution of the liquid medium in the flow pipe on the cylinder, thereby ensuring the uniformity of the temperature of the cylinder, and the flow resistance of the liquid medium in the flow pipe is smaller, the flow speed is faster, and the heat exchange efficiency between the flow pipe and the cylinder is higher; at the same time, the flow pipe is connected with the cylinder through the fixing assembly, which is conducive to maximizing the effective heat transfer area between the flow pipe and the cylinder and reducing heat transfer loss. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a structural schematic diagram of an embodiment of the heat exchange assembly of the present application;

[0017] Figure 2 is a structural enlarged schematic view of the first fixing member of the fixing assembly of an embodiment of the heat exchange assembly of the present application;

[0018] Figure 3 is a structural enlarged schematic view of the second fixing member of the fixing assembly of an embodiment of the heat exchange assembly of the present application.

[0019] BRIEF DESCRIPTION OF DRAWINGS 100 - heat exchange assembly, 1 - liquid outlet pipe, 2 - liquid inlet pipe, 3 - reflux communication ring pipe, 4 - first fixing member, 5 - second fixing member, 501 - first part, 502 - second part, 6 - cylinder, 7 - flow pipe, 8 - liquid distribution communication ring pipe, 10 - fixing assembly. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] The terms "first", "second" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to the process, method, product or device. And the term "and / or", is only a description of the association between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of existence of A alone, existence of A and B together, and existence of B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects.

[0022] Please refer to Figure 1 , Figure 1 is a structural schematic view of an embodiment of the heat exchange assembly of the present application.

[0023] One of the technical solutions adopted by the present application is a heat exchange assembly 100, comprising a cylinder body 6, a liquid distribution and communication ring 8, a backflow communication ring 3, a plurality of flow tubes 7 and a fixing assembly 10. The cylinder body 6 comprises a first end and a second end (not shown in the figure) arranged oppositely; the liquid distribution and communication ring 8 is arranged at the first end of the cylinder body 6; the liquid distribution and communication ring 8 comprises a liquid inlet (not shown in the figure); the backflow communication ring 3 is arranged at the second end of the cylinder body 6; the backflow communication ring 3 comprises a liquid outlet (not shown in the figure); one end of each flow tube 7 is in communication with the liquid distribution and communication ring 8, and the other end of each flow tube 7 is in communication with the backflow communication ring 3; the flow tubes 7 are arranged on the surface of the cylinder body 6; the fixing assembly 10 is arranged on the side of the flow tubes 7 away from the cylinder body 6; and the fixing assembly 10 is connected with the cylinder body 6 to fix the flow tubes 7.

[0024] In the present application, the liquid distribution and communication ring 8 is arranged at the first end of the cylinder body 6 and comprises a liquid inlet, the backflow communication ring 3 is arranged at the second end of the cylinder body 6 and comprises a liquid outlet, the plurality of flow tubes 7 are arranged on the surface of the cylinder body 6, the two ends of each flow tube 7 are in communication with the liquid distribution and communication ring 8 and the backflow communication ring 3 respectively, and the fixing assembly 10 is connected with the cylinder body 6 to fix the flow tubes 7. When liquid medium enters the liquid distribution and communication ring 8 from the liquid inlet, the liquid medium flows to the backflow communication ring 3 along the parallelly arranged flow tubes 7 on the surface of the cylinder body 6 under the uniform liquid distribution of the liquid distribution and communication ring 8, and heat exchange is realized between the liquid medium and the cylinder body 6 through the fixing assembly 10 and the cylinder body 6 in the process of flowing upward. The liquid medium realizes heat exchange through both sensible heat and latent heat, and finally flows out of the liquid outlet under the converging effect of the backflow communication ring 3. The parallel arrangement of the plurality of flow tubes 7 is conducive to ensuring the uniformity of the distribution of the liquid medium in the flow tubes 7 on the cylinder body 6, thereby ensuring the uniformity of the temperature of the cylinder body 6, and the flow resistance of the liquid medium in the flow tubes 7 is smaller and the flow speed is faster, and the heat exchange efficiency between the flow tubes 7 and the cylinder body 6 is higher. At the same time, the flow tubes 7 are connected with the cylinder body 6 through the fixing assembly 10, which reduces the distance between the flow tubes 7 and the cylinder body 6, is conducive to maximizing the effective heat transfer area between the flow tubes 7 and the cylinder body 6, and reduces heat transfer loss.

[0025] In some embodiments, the flow tubes 7 are arranged in close contact with the cylinder body 6.

[0026] In the present application, the flow tubes 7 are arranged in close contact with the cylinder body 6, which is conducive to increasing the effective heat transfer area between the flow tubes 7 and the cylinder body 6 and reducing heat transfer loss.

[0027] Please refer to Figure 2 and Figure 3In some embodiments, the fixing assembly 10 comprises a first fixing member 4 and / or a second fixing member 5; the first fixing member 4 comprises a first part and a second part, the first part and the second part are arranged side by side along a direction perpendicular to the extending direction of the flow pipe, the end of the first part away from the second part is electrically welded to the cylinder body 6, the end of the second part away from the first part is electrically welded to the cylinder body 6, and the first part and the second part are electrically welded; the second fixing member 5 comprises a first part 501 and a second part 502 arranged on both sides of the first part 501, the first part 501 is arranged in close contact with the flow pipe 7, and the two second parts 502 are respectively riveted to the cylinder body 6.

[0028] Specifically, the first fixing member 4 can comprise any metal pipe with good heat conduction performance, such as a heat-conducting aluminum pipe; the first part 501 of the second fixing member 5 can comprise any metal with good heat conduction performance, such as a copper plate; and the second part 502 of the second fixing member 5 can be a rivet.

[0029] The first part and the second part of the first fixing member 4 are arranged side by side along a direction perpendicular to the extending direction of the flow pipe, and the first part and the second part are electrically welded, which is beneficial to increase the effective heat transfer contact area between the first fixing member 4 and the flow pipe 7; the end of the first part away from the second part is electrically welded to the cylinder body 6, and the end of the second part away from the first part is electrically welded to the cylinder body 6, which is beneficial to increase the effective heat transfer contact area between the first fixing member 4 and the cylinder body 6, thereby enhancing the heat transfer efficiency between the flow pipe 7 and the cylinder body 6 and reducing heat transfer loss; the first part 501 of the second fixing member 5 is arranged in close contact with the flow pipe 7, and the second part 502 of the second fixing member 5 is respectively riveted to the cylinder body 6, so that the flow pipe 7 and the cylinder body 6 are arranged in close contact, which is beneficial to increase the effective heat transfer contact area between the flow pipe 7 and the cylinder body 6, while avoiding excessively increasing the complexity of the structure of the heat exchange assembly 100, thereby maximizing the heat exchange efficiency of the heat exchange assembly 100 and reducing heat transfer loss.

[0030] In a specific embodiment, the cross section of the flow pipe 7 is circular, the first part and the second part of the first fixing member 4 are arc-shaped structures, the bending radius of the arc-shaped structure is matched with the flow pipe 7, and the flow pipe 7 is not in contact with the cylinder body 6.

[0031] In a specific embodiment, the cross section of the flow pipe 7 is circular, the first part 501 of the second fixing member 5 is an arc-shaped structure, the bending radius of the arc-shaped structure is matched with the flow pipe 7, the surface of the flow pipe 7 not in contact with the cylinder body 6 is covered by the first part 501 of the second fixing member 5, and the two ends of the arc-shaped structure are respectively connected with the second part 502.

[0032] In some embodiments, a plurality of first fixing members 4 and a plurality of second fixing members 5 are arranged along the extension direction of the flow pipe 7, and the first fixing members 4 and the second fixing members 5 are arranged alternately.

[0033] In the embodiments of the present application, the plurality of first fixing members 4 and the plurality of second fixing members 5 are arranged alternately along the extension direction of the flow pipe 7, so that the flow pipe 7 and the cylinder body 6 are arranged in close contact, which is conducive to further increasing the effective heat transfer contact area between the flow pipe 7 and the cylinder body 6, thereby increasing the heat exchange efficiency of the heat exchange assembly 100 and reducing the heat transfer loss.

[0034] In a specific embodiment, there are 8 first fixing members 4 and 8 second fixing members 5 arranged along the extension direction of the flow pipe 7, and the first fixing members 4 and the second fixing members 5 are arranged alternately.

[0035] In a specific embodiment, there are 8 first fixing members 4 and 6 or 7 second fixing members 5 arranged along the extension direction of the flow pipe 7, and the first fixing members 4 and the second fixing members 5 are arranged alternately.

[0036] Due to errors and welding deformation generated in the manufacturing process, the joint position and angle on the distribution communication ring pipe 8 and the return flow communication ring pipe 3 are not accurate, and the connection between the two ends of the flow pipe 7 and the joint of the communication ring pipe is difficult. In the case of preferentially ensuring the joint connection of the flow pipe 7 and the communication ring pipe, the flow pipe 7 and the cylinder body 6 cannot be closely arranged, especially near the distribution communication ring pipe 8 and the return flow communication ring pipe 3, which reduces the effective heat transfer area and further reduces the heat exchange effect of the heat exchange assembly 100.

[0037] In the embodiments of the present application, the 8 first fixing members 4 and the 6 or 7 second fixing members 5 are arranged alternately along the extension direction of the flow pipe 7, which appropriately reduces the number of the second fixing members 5, so as to provide more sufficient adjustment space for the connection between the flow pipe 7 and the distribution communication ring pipe 8 and the return flow communication ring pipe 3, increase the effective heat transfer area between the flow pipe 7 and the cylinder body 6, and improve the heat exchange efficiency of the heat exchange assembly 100.

[0038] In a specific embodiment, the plurality of first fixing members 4 and the plurality of second fixing members 5 are arranged at equal intervals.

[0039] In some embodiments, the heat exchange assembly includes a plurality of flow pipes 7, and the plurality of flow pipes 7 are arranged at equal intervals along the circumferential direction of the cylinder body 6.

[0040] In the embodiments of the present application, the plurality of flow pipes 7 are arranged at equal intervals along the circumferential direction of the cylinder body 6, which is conducive to further ensuring the uniformity of the distribution of the liquid medium in the flow pipe 7 on the cylinder body 6, thereby ensuring the uniformity of the temperature of the cylinder body 6.

[0041] In some embodiments, the heat exchange assembly 100 further comprises an inlet pipe 2 and an outlet pipe 1; the inlet pipe 2 is in communication with the inlet port of the distribution communication ring pipe 8; the outlet pipe 1 is in communication with the outlet port of the return communication ring pipe 3; the port of the inlet pipe 2 away from the distribution communication ring pipe 8 and the port of the outlet pipe 1 away from the return communication ring pipe 3 are located at the same end of the cylinder body 6.

[0042] In the embodiments of the present application, the port of the inlet pipe 2 away from the distribution communication ring pipe 8 and the port of the outlet pipe 1 away from the return communication ring pipe 3 are located at the same end of the cylinder body 6, which facilitates the connection of the inlet pipe 2 and the outlet pipe 1 of the heat exchange assembly 100 with the external liquid medium storage container.

[0043] In some embodiments, the inlet pipe 2, the distribution communication ring pipe 8 and the flow pipe 7 are located outside the cylinder body 6, and the return communication ring pipe 3 is located inside the cylinder body 6.

[0044] In the embodiments of the present application, the inlet pipe 2, the distribution communication ring pipe 8 and the flow pipe 7 are located outside the cylinder body 6, and the return communication ring pipe 3 is located inside the cylinder body 6, which makes the connection between the connecting pipe of the heat exchange assembly 100 and the cylinder body 6 more firm.

[0045] In some embodiments, the end of the cylinder body 6 has a recessed notch for connecting the flow pipe outside the cylinder body 6 with the return communication ring pipe inside the cylinder body 6.

[0046] In some embodiments, the inlet pipe 2, the distribution communication ring pipe 8, the flow pipe 7, the return communication ring pipe 3 and the outlet pipe 1 are all located outside the cylinder body 6.

[0047] In the embodiments of the present application, the inlet pipe 2, the distribution communication ring pipe 8, the flow pipe 7, the return communication ring pipe 3 and the outlet pipe 1 are all located outside the cylinder body 6, which makes the connection and adjustment between the flow pipe 7 and the return communication ring pipe 3 more convenient.

[0048] In a specific embodiment, when the liquid medium enters the distribution communication ring pipe 8 from the inlet pipe 2, the liquid medium flows to the return communication ring pipe 3 along the parallelly distributed flow pipes 7 on the surface of the cylinder body 6 under the uniform distribution of the distribution communication ring pipe 8, and in the process of flowing upward, the heat exchange is realized by the fixed assembly 10 and the cylinder body 6, the liquid medium in the flow pipe 7 realizes heat exchange by both sensible heat and latent heat, and finally the liquid medium flows out from the outlet pipe 1 under the converging effect of the return communication ring pipe 3. Optionally, the liquid medium is liquid nitrogen.

[0049] Still another technical scheme adopted by the present application is a low-temperature storage container comprising the heat exchange assembly 100 as described above.

[0050] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A heat exchange assembly, characterized by, The heat exchange assembly comprises: a cylinder body comprising a first end and a second end arranged oppositely; a liquid distribution and communication ring pipe arranged at the first end of the cylinder body, wherein the liquid distribution and communication ring pipe comprises a liquid inlet; a backflow communication ring pipe arranged at the second end of the cylinder body, wherein the backflow communication ring pipe comprises a liquid outlet; a plurality of flow pipes, wherein one end of each of the flow pipes is in communication with the liquid distribution and communication ring pipe, and the other end of each of the flow pipes is in communication with the backflow communication ring pipe, and the flow pipes are arranged on the surface of the cylinder body; a fixing assembly arranged on the side of the flow pipes away from the cylinder body, wherein the fixing assembly is connected with the cylinder body to fix the flow pipes.

2. The heat exchange assembly of claim 1, wherein, The flow pipes are arranged in close contact with the cylinder body.

3. Heat exchange assembly according to claim 1 or 2, characterized in that The fixing assembly comprises a first fixing member and / or a second fixing member. The first fixing member comprises a first part and a second part, wherein the first part and the second part are arranged side by side along a direction perpendicular to the extension direction of the flow pipes, the end of the first part away from the second part is electrically welded with the cylinder body, the end of the second part away from the first part is electrically welded with the cylinder body, and the first part and the second part are electrically welded with each other. The second fixing member comprises a first part and a second part arranged on both sides of the first part, wherein the first part is arranged in close contact with the flow pipes, and the two second parts are riveted with the cylinder body.

4. The heat exchange assembly of claim 3, wherein, A plurality of first fixing members and a plurality of second fixing members are arranged along the extension direction of the flow pipes, and the first fixing members and the second fixing members are arranged alternately.

5. The heat exchange assembly of claim 1, wherein, The heat exchange assembly comprises a plurality of flow pipes, and the plurality of flow pipes are arranged equidistantly along the circumferential direction of the cylinder body.

6. The heat exchange assembly of claim 1, wherein, The heat exchange assembly further comprises a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is in communication with the liquid inlet of the liquid distribution and communication ring pipe, the liquid outlet pipe is in communication with the liquid outlet of the backflow communication ring pipe, and the end of the liquid inlet pipe away from the liquid distribution and communication ring pipe and the end of the liquid outlet pipe away from the backflow communication ring pipe are located at the same end of the cylinder body.

7. The heat exchange assembly of claim 6, wherein, The liquid inlet pipe, the liquid distribution and communication ring pipe, and the flow pipes are located outside the cylinder body, and the backflow communication ring pipe is located inside the cylinder body.

8. The heat exchange assembly of claim 7, wherein, The end of the cylinder body has a recessed notch for connecting the flow pipes outside the cylinder body with the backflow communication ring pipe inside the cylinder body.

9. The heat exchange assembly of claim 6, wherein, The liquid inlet pipe, the liquid distribution and communication ring pipe, the flow pipes, the backflow communication ring pipe, and the liquid outlet pipe are all located outside the cylinder body.

10. A cryogenic storage container characterized by, The heat exchange assembly comprises any one of the heat exchange assemblies according to claims 1-9.

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