Micro-channel heat exchanger with good sealing performance
By setting slots and sealing structures on the heat exchanger fixing plate, combined with the use of welded components, the problem of poor sealing performance of welded heat exchange tubes was solved, achieving better sealing and safety, and reducing production costs.
Patent Information
- Application Number
- CN202520968014.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-12
- Estimated Expiration
- 2035-05-16
AI Technical Summary
The poor sealing of welded heat exchange tubes in existing heat exchangers leads to material contamination and increased production costs.
Slots are provided on the fixed plate of the heat exchanger. The heat exchange tubes are inserted into the slots through a sealing structure and welded parts. A tight connection is achieved through the cooperation of the sealing structure and welded parts to ensure airtightness.
It improves the sealing and safety of heat exchangers, reduces production costs, and simplifies the operation process.
Smart Images
Figure CN224353641U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of polysilicon production technology, and in particular to a microchannel heat exchanger with good sealing performance. Background Technology
[0002] Polycrystalline silicon is an important raw material for the production of solar cells, and the polycrystalline silicon cold hydrogenation reactor is a device used to produce high-purity silicon. It uses cold hydrogenation technology to convert silicon powder into high-purity polycrystalline silicon, reducing energy consumption and production costs.
[0003] Heat exchangers are required in the cold hydrogenation process. Existing heat exchangers typically use welded heat exchanger tubes. However, welding can lead to poor sealing and contamination of materials, increasing production costs and impacting subsequent production and manufacturing. Therefore, this paper proposes a microchannel heat exchanger with excellent sealing performance, safety, convenience, and practicality. Utility Model Content
[0004] One objective of this application is to provide a well-sealed microchannel heat exchanger that is safe, convenient, and highly practical.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a microchannel heat exchanger with good sealing performance, comprising a tube box; fixed plates are provided on both sides of the tube box, and multiple slots are opened on the side of the fixed plates. Heat exchange tubes are sealed in the multiple slots by a sealing structure. Welding parts are provided on the side of the heat exchange tubes, and the welding parts cooperate with the fixed plates; the heat exchange tubes are adapted to simultaneously extend into the corresponding slots on two fixed plates and be sealed by the sealing structure, and the welding parts are adapted to be adjusted to fit tightly against the side of the fixed plates to weld a stable seal.
[0006] Preferably, one section of the side of the slot is tapered.
[0007] Preferably, the sealing structure includes a limiting block and a sealing ring; the limiting block is installed on the side of the heat exchange tube, and the sealing ring is sealed on the side of the heat exchange tube and abuts against the side of the limiting block.
[0008] Preferably, the sealing ring is tapered, and the sealing ring is sealed to the tapered section of the slot.
[0009] Preferably, the welded component is a welded block that is threadedly connected to the side of the heat exchange tube, and the side of the welded block mates with the side of the fixing plate.
[0010] Preferably, buffer cavities are provided on both sides of the tube box.
[0011] Preferably, one end of the buffer cavity is provided with an outlet.
[0012] Preferably, one end of the other buffer cavity is provided with an inlet.
[0013] Preferably, the tube box has multiple guide plates arranged in a staggered manner inside.
[0014] Compared with the prior art, the advantages of this application are as follows: Fixing plates are provided on both sides of the tube box, and multiple slots are provided on the fixing plates. Heat exchange tubes are sealed and inserted into the slots through a sealing structure. Welding components are provided on the sides of the heat exchange tubes. During installation, one end of the heat exchange tube can be inserted into the slot and sealed through the sealing structure. After sealing, the welding components can be rotated to tightly connect one end of the heat exchange tube to the side of the fixing plate, thus securing the heat exchange tube more tightly. After fixing, the welding components are sealed and welded to the fixing plate, resulting in a more airtight and secure structure with good safety, simple operation, and strong practicality. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure from the left middle view.
[0017] Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure from the center.
[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0019] Figure 5 This utility model Figure 4 Enlarged structural diagram of the heat exchanger tube during installation.
[0020] In the diagram: 1. Tube box; 11. Fixing plate; 111. Slot; 12. Sealing structure; 121. Limiting block; 122. Sealing ring; 13. Heat exchange tube; 2. Welded parts; 21. Welding block; 3. Buffer chamber; 31. Outlet; 32. Inlet. Detailed Implementation
[0021] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application 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 necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0025] One preferred embodiment of this application, such as Figures 1 to 5 As shown, a well-sealed microchannel heat exchanger includes a tube box 1. Fixing plates 11 are provided on both sides of the sealed tube box 1. Multiple slots 111 are formed on the sides of the fixing plates 11, and corresponding heat exchange tubes 13 are arranged inside the slots 111. The heat exchange tubes 13 and the slots 111 between the two fixing plates 11 are fitted together by a sealing structure 12. Welding parts 2 are also provided on both sides of the heat exchange tubes 13, and the sides of the two welding parts 2 fit into the corresponding fixing plates 11. Therefore, during sealed installation, one side of the heat exchange tube 13 can be inserted into the slot 111, while the other end of the heat exchange tube 13 protrudes from the fixing plate 111. Outside the fixed plate 11, the welding part 2 is then installed on one end of the extended heat exchange tube 13. During the sealing connection, the sealing structure 12 can seal the heat exchange tube 13 in the slot 111. Then, by rotating the welding part 2, the welding part 2 can drive the heat exchange tube 13 to move towards the fixed plate 11, so that the sealing structure 12 can better seal the heat exchange tube 13. At this time, the welding part 2 is also tightly attached to the side of the fixed plate 11. After attachment, welding can be used to make the welding part 2 stably and sealed on the fixed plate 11, thus ensuring a tight and stable connection between the heat exchange tube 13 and the fixed plate 11. It has good sealing performance, is safe and convenient, and is easy to operate.
[0026] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, it should be understood that in order to enable the sealing structure 12 to seal the heat exchange tube 13 during installation, a section of the side of the slot 111 is tapered. Thus, during the sealing installation, the sealing structure 12 can cooperate with the tapered section of the slot 111 to achieve a sealed connection between the heat exchange tube 13 and the fixing plate 11, thereby better ensuring the stability and safety during production and reducing material waste.
[0027] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, the sealing structure 12 includes a limiting block 121 and a sealing ring 122. The limiting block 121 is installed on the side of the heat exchange tube 13, and the sealing ring 122 is located on the side of the heat exchange tube 13 and fits against the side of the limiting block 121. The sealing ring 122 cooperates with the slot 111. The size of the limiting block 121 is smaller than the length of the tapered section of the slot 111, so that the heat exchange tube 13 can be inserted into the slot 111 of the fixing plate 11 along with the limiting block 121. After one side of the heat exchange tube 13 is inserted into the slot 111, the other end of the heat exchange tube 13 protrudes out of the fixing plate 11 when it is inserted into the slot 111. Then, the welding part 2 is installed on the protruding end of the heat exchange tube 13, and then the sealing is performed. During the sealing connection, the side of the sealing ring 122 can fit tightly with the tapered section of the slot 111. Thus, the sealing ring 122 can seal the gap between the heat exchange tube 13 and the slot 111. After the sealing connection, the welding part 2 can be rotated, so that the welding part 2 can drive the heat exchange tube 13 to move towards the fixed plate 11. This allows the sealing ring 122 to better seal the heat exchange tube 13. At this time, the welding part 2 is also tightly attached to the side of the fixed plate 11. After attachment, welding can be used to make the welding part 2 stably and sealed on the fixed plate 11, thus ensuring a tight and stable connection between the heat exchange tube 13 and the fixed plate 11, with good sealing performance, safety and convenience.
[0028] In this embodiment, as Figures 2 to 5As shown, it should be understood that in order to ensure a better and tighter fit between the sealing ring 122 and the tapered section of the slot 111, the side of the sealing ring 122 is also tapered, and the sealing ring 122 seals against the tapered section of the slot 111. Furthermore, during the sealing installation, one end of the heat exchange tube 13 can be inserted into the slot 111, with one end of the heat exchange tube 13 extending slightly beyond the side of the fixing plate 11. At this point, the tapered section of the sealing ring 122 of the heat exchange tube 13 fits tightly against the tapered section of the slot 111, thus allowing the sealing ring 122 to better seal the gap between the heat exchange tube 13 and the slot 111. Then, the welding component 2 can be rotated. Rotating the welding component 2 allows the tapered section of the sealing ring 122 of the heat exchange tube 13 to move towards the tapered section of the slot 111, so that the sealing ring 122 and the tapered section of the slot 111 can fit tightly together. At this time, the side of the welding component 2 also fits against the side of the fixing plate 11, so that the welding component 2 can be welded, so that the welding component 2 can be tightly welded to the side of the fixing plate 11, thereby ensuring the sealing and blocking of the gap of the slot 111 by the sealing ring 122, further ensuring the safety of the polycrystalline silicon production process, improving the sealing performance and convenience of the device, and making the operation simple, convenient, safe and reliable with good practical effect.
[0029] In this embodiment, as Figure 2 , Figure 3 and Figure 4As shown, it should be understood that the welded component 2 is a welded block 21 connected to the side of the heat exchange tube 13 by a thread. The side of the welded block 21 is provided with a tight-fitting block. The size of the tight-fitting block is larger than the opening size of the tapered section away from the slot 111. Therefore, the welded block 21 can be moved towards the side of the fixing plate 11 by the thread, so that the side of the tight-fitting block can completely cover the opening of the slot 111, ensuring the sealing performance of the device during installation. Furthermore, during sealing installation, the heat exchange tube 13 can be inserted into the slot 111, with one end of the heat exchange tube 13 extending slightly beyond the side of the fixing plate 11. Then, the heat exchange tube 13 is further inserted into the slot 111. At this point, the tapered section of the sealing ring 122 of the heat exchange tube 13 can fit tightly against the tapered section of the slot 111, allowing the sealing ring 122 to better seal the heat exchange tube. The gap between heat exchange tube 13 and slot 111 is sealed. After sealing, welding block 21 can be rotated. The rotation of welding block 21 drives heat exchange tube 13 to move towards the side of fixed plate 11, and at the same time, the side of welding block 21 can move towards the side of fixed plate 11. Thus, the sealing ring 122 on heat exchange tube 13 is further tightly connected to the tapered section of slot 111. The tight block on the side of welding block 21 tightly seals and fits the slot 111. Thus, the tight block on welding block 21 can be welded to fixed plate 11, so that the tight block of welding block 21 can tightly and seal the slot 111. This ensures that the sealing ring 122 seals and blocks the gap of slot 111, further improving the sealing performance and convenience of the device. The operation is simple and convenient, and the practical effect is good.
[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that buffer chambers 3 are provided on both sides of the tube box 1. The buffer chambers 3 are tightly and sealed on both sides of the tube box 1, which can effectively ensure the sealing of the tube box 1, thereby improving the reaction effect, reducing material waste, and thus reducing production costs.
[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, it should be known that one end of a buffer chamber 3 is provided with an outlet 31, which facilitates the output of the reaction products from the outlet 31.
[0032] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that one end of another buffer chamber 3 is provided with an inlet 32, which facilitates the material to enter the heat exchanger through the inlet 32 for reaction.
[0033] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, it should be noted that in order to achieve better heat exchange, multiple guide plates are staggered inside the tube box 1, so that the multiple staggered guide plates can better dissipate heat and improve the heat dissipation effect.
[0034] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A microchannel heat exchanger with good sealing performance, characterized in that: The device includes a tube box; fixed plates are provided on both sides of the tube box, and multiple slots are provided on the sides of the fixed plates. Heat exchange tubes are sealed in the multiple slots by a sealing structure. Welded parts are provided on the sides of the heat exchange tubes, and the welded parts cooperate with the fixed plates. The heat exchange tubes are adapted to simultaneously extend into the corresponding slots on two fixed plates and be sealed by the sealing structure. The welded parts are adapted to be adjusted to fit tightly against the sides of the fixed plates to weld a stable seal.
2. The well-sealed microchannel heat exchanger as described in claim 1, characterized in that: One section of the side of the slot is tapered.
3. The well-sealed microchannel heat exchanger as described in claim 2, characterized in that: The sealing structure includes a limiting block and a sealing ring; the limiting block is installed on the side of the heat exchange tube, and the sealing ring is sealed on the side of the heat exchange tube and abuts against the side of the limiting block.
4. The well-sealed microchannel heat exchanger as described in claim 3, characterized in that: The sealing ring is tapered and is sealed to the tapered section of the slot.
5. The well-sealed microchannel heat exchanger as described in claim 1, characterized in that: The welded component is a welded block that is threadedly connected to the side of the heat exchange tube, and the side of the welded block mates with the side of the fixing plate.
6. The well-sealed microchannel heat exchanger as described in claim 1, characterized in that: Buffer cavities are provided on both sides of the pipe box.
7. The well-sealed microchannel heat exchanger as described in claim 6, characterized in that: One end of the buffer cavity is provided with an outlet.
8. The well-sealed microchannel heat exchanger as described in claim 6, characterized in that: Another buffer cavity has an inlet at one end.
9. The well-sealed microchannel heat exchanger as described in claim 6, characterized in that: The pipe box is equipped with multiple guide plates that are staggered inside.