A heat exchanger based on microchannel enhanced heat transfer
By using a microchannel heat exchanger to enhance heat transfer during polycrystalline silicon production, and utilizing heat-conducting rods and inclined, staggered serrated heat exchange plates, the problem of low exhaust gas cooling efficiency was solved, achieving a highly efficient cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG CENT HESHENG SILICON IND CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-26
AI Technical Summary
The existing polycrystalline silicon cold hydrogen process has low exhaust heat transfer efficiency, resulting in poor cooling effect.
A microchannel-based enhanced heat transfer heat exchanger is adopted. By setting multiple heat-conducting rods and inclined, staggered, sawtooth-shaped heat exchange plates in the heat energy generator body, combined with spiral or serpentine heat-conducting rods and heat exchange plates, the contact area is increased to enhance the heat transfer process.
It improves the cooling efficiency of exhaust gas, enhances the cooling effect, and the device is simple and reliable.
Smart Images
Figure CN224285578U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of polycrystalline silicon production technology, and in particular to a heat exchanger based on microchannel enhanced heat transfer. Background Technology
[0002] In the polysilicon production process, silicon undergoes high-temperature reactions to produce gaseous silicon compounds. These exhaust silicon compounds are then collected and treated. The exhaust fluid is heat-transferred through a transducer, and the chlorosilanes in the exhaust gas are condensed into liquid and removed from the exhaust gas for downstream separation and purification.
[0003] However, the heat transfer efficiency of the exhaust gas in existing polycrystalline silicon cold hydrogen processes is relatively low, resulting in poor cooling performance. Therefore, a heat exchanger based on microchannel enhanced heat transfer is proposed to enhance the heat transfer process and improve the cooling effect. Utility Model Content
[0004] One objective of this application is to provide a heat exchanger based on microchannel enhanced heat transfer that strengthens the heat transfer process and improves the cooling effect.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a heat exchanger based on microchannel enhanced heat transfer, comprising a heat exchanger body and a heat exchange mechanism disposed within the heat exchanger body; an air inlet and a cold flow outlet are respectively disposed on the side of the heat exchanger body, and multiple heat-conducting rods are disposed inside the heat exchanger body, the multiple heat-conducting rods cooperating with the heat exchange mechanism; the exhaust gas is suitable for entering the heat exchanger body to enhance the heat transfer process through the multiple heat-conducting rods and the heat exchange mechanism, thereby performing heat exchange and cooling.
[0006] Preferably, the plurality of heat exchange plates are serrated, and the plurality of heat exchange plates are arranged in an inclined and staggered manner on the heat exchanger body.
[0007] Preferably, the plurality of heat exchange plates are arranged at an inclined and staggered manner on the heat exchanger body.
[0008] Preferably, the included angle between the heat exchange plate and the heat energy generator body is α, where 30°≤α≤45°.
[0009] Preferably, the heat-conducting rod and the corresponding heat exchange plate are arranged in a spiral shape.
[0010] Preferably, the heat-conducting rod and the corresponding heat exchange plate are arranged in a serpentine pattern.
[0011] Preferably, an exhaust port is provided at the upper end of the thermal energy generator body.
[0012] Preferably, the heat exchange plate has multiple through holes on its side.
[0013] Compared with the prior art, the beneficial effects of this application are as follows: a heat exchange mechanism for heat transfer and cooling is provided inside the heat energy generator body, and multiple heat-conducting rods are also provided inside the heat energy generator body, which cooperate with the heat exchange mechanism; thus, when performing exhaust gas cooling treatment, the exhaust gas can be better cooled by the cooperation of the heat-conducting rods and the heat exchange mechanism, thereby improving the cooling efficiency. The device is simple, reasonable, practical and reliable. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure from the center.
[0016] Figure 3 This utility model Figure 1 Mid-top view of the structure.
[0017] Figure 4 This utility model Figure 3 A schematic diagram of the heat exchange mechanism and heat conduction rod structure viewed from above.
[0018] Figure 5 This utility model Figure 3 A schematic diagram of another embodiment of the heat exchange mechanism and heat conduction rod, viewed from above.
[0019] In the diagram: 1. Heat exchanger body; 11. Air inlet; 12. Cold air outlet; 13. Heat conduction rod; 2. Heat exchange mechanism; 21. Heat exchange plate. Detailed Implementation
[0020] 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.
[0021] 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.
[0022] 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.
[0023] 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.
[0024] One preferred embodiment of this application, such as Figures 1 to 5 As shown, a heat exchanger based on microchannel enhanced heat transfer includes a heat exchanger body 1 and a heat exchange mechanism 2. The heat exchange mechanism 2 is disposed inside the heat exchanger body 1, thereby facilitating heat transfer of the exhaust gas introduced into the heat exchanger body 1, thus improving the heat transfer efficiency of the exhaust gas. Multiple heat-conducting rods 13 are also disposed inside the heat exchanger body 1. The multiple heat-conducting rods 13 cooperate with the heat exchange mechanism 2 to further improve the heat exchange efficiency and facilitate better condensation of the exhaust gas. It is understood that the air inlet 11 is located on the side of the heat exchanger body 1. The cold inlet 12 is located at the bottom of the heat exchanger body 1. When treating exhaust gas, the exhaust gas can be introduced into the heat exchanger body 1 through the air inlet 11 and heat exchanged through the heat exchange mechanism 2. At the same time, multiple heat-conducting rods 13 can also exchange heat with the hot exhaust gas. When cooling, the cold fluid can enter the heat exchanger body 1 through the cold inlet 12, and then exchange heat with the heat exchange mechanism 2 and the heat-conducting rods 13 to cool the exhaust gas. This allows the exhaust gas to be cooled more effectively, improving the cooling efficiency of the exhaust gas and enhancing the cooling effect of the device. It is safe, reliable, practical and convenient.
[0025] In this embodiment, as Figure 2 , Figure 4 and Figure 5 As shown, the heat exchange mechanism 2 includes multiple heat exchange plates 21. These multiple heat exchange plates 21 are staggered inside the heat exchanger body 1, and cooperate with the heat-conducting rod 13 to cool the exhaust gas. When treating the exhaust gas, the exhaust gas can be introduced into the heat exchanger body 1 through the inlet 11 and exchanged with the multiple heat exchange plates 21. Cold fluid can enter the heat exchanger body 1 through the cold flow port 12 and cool the exhaust gas through the multiple heat exchange plates 21, thereby enabling the exhaust gas to be cooled more effectively, improving the cooling efficiency of the exhaust gas, and ensuring safety and convenience.
[0026] In this embodiment, as Figure 2 , Figure 4 and Figure 5 As shown, it can be understood that in order to enable better heat transfer from the multiple heat exchange plates 21, the multiple heat exchange plates 21 are arranged in an inclined and staggered manner on the heat exchanger body 1, and the heat exchange plates 21 are serrated, thereby increasing the heat transfer area between the exhaust gas and the heat exchange plates 21. The multiple inclined heat exchange plates 21 can also cooperate with the corresponding heat-conducting rods 13 to transfer heat from the high-temperature exhaust gas in the heat exchanger body 1, so that the exhaust gas can be cooled better. When treating the exhaust gas, the high-temperature exhaust gas can be introduced into the heat exchanger body 1 through the air inlet 11. Inside the heat exchanger body 1, multiple inclined and staggered heat exchange plates 21 are arranged. The high-temperature exhaust gas is slowed down by the obstruction of the heat exchange plates 21. The cold fluid can mix with the slowed-down high-temperature exhaust gas according to the arrangement of multiple heat exchange plates 21, thereby cooling the high-temperature exhaust gas. Since the heat exchange plates 21 are serrated, the contact area between the cold fluid and the heat exchange plates 21 is increased, which facilitates better cooling of the high-temperature exhaust gas, improves the energy conversion effect and cooling effect, strengthens the heat transfer process, and improves the heat dissipation effect.
[0027] In this embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it should be understood that the acute angle formed between the heat exchange plate 21 and the heat exchanger body 1 is the included angle α, and the angle range of α is 30°≤α≤45°. This allows the heat exchange plate 21 to be tilted, so that the exhaust gas moves with the alternating arrangement of multiple heat exchange plates 21, thereby slowing down the movement of the exhaust gas to a certain extent. This allows the cold fluid to have a certain amount of time to exchange heat and cool down the high-temperature exhaust gas. When treating the exhaust gas, the exhaust gas can be introduced into the heat exchanger body 1 through the inlet 11. The high-temperature exhaust gas will slow down its movement under the action of the heat exchange plates 21, and then pass through the heat exchange plates 21. The limitation of 1 allows the cold fluid to mix with the slowed high-temperature exhaust gas in a certain space, thereby cooling the high-temperature exhaust gas. Since the heat exchange plate 21 is serrated, the contact area between the cold fluid and the heat exchange plate 21 is increased, which facilitates better cooling of the high-temperature exhaust gas. At the same time, multiple heat-conducting rods 13 can also exchange heat with the hot exhaust gas. During cooling, the cold fluid can enter the heat energy generator body 1 through the cold flow port 12, and then exchange heat with the exhaust gas through multiple heat exchange plates 21 and heat-conducting rods 13, thereby enabling the exhaust gas to be cooled better, improving the energy conversion effect and cooling effect, and ensuring safety and practicality.
[0028] In this embodiment, as Figures 2 to 4As shown, it can be understood that in order to make the heat transfer between the heat transfer rod 13 and the corresponding heat exchange plate 21 more efficient and better, the arrangement of the heat transfer rod 13 and the heat exchange plate 21 includes, but is not limited to, the following two arrangement methods.
[0029] Setting method 1: As shown in the example Figure 2 , Figure 3 and Figure 4 As shown, the heat-conducting rod 13 and the heat exchange plate 21 are arranged in a spiral shape, which allows for a larger contact area between the spiral shape of the heat-conducting rod 13 and the heat exchange plate 21, thereby further transferring heat and cooling the heat exchange plate 21. When treating the exhaust gas, the exhaust gas can be introduced into the heat exchanger body 1 through the air inlet 11. Inside the heat exchanger body 1, multiple inclined and staggered heat exchange plates 21 are arranged, which buffers the speed of the high-temperature exhaust gas to a certain extent. At the same time, the spiral contact between the multiple heat-conducting rods 13 and the corresponding heat exchange plates 21 increases the contact area between the heat-conducting rods 13 and the heat exchange plates 21, allowing the heat exchange plates 21 to better exchange energy. When the cold fluid enters the heat exchanger body 1 and comes into contact with and mixes with the high-temperature exhaust gas, the high-temperature exhaust gas can react and cool down more quickly and completely under the action of the heat exchange plates 21, thereby improving the cooling effect and ensuring safety and reliability.
[0030] Setting method two: (e.g.) Figure 2 , Figure 3 and Figure 5 As shown, the heat-conducting rod 13 and the corresponding heat exchange plate 21 are arranged in a serpentine pattern, which allows for a larger contact area between the heat-conducting rod 13 and the heat exchange plate 21, thereby further transferring heat and cooling the heat exchange plate 21. When treating exhaust gas, the exhaust gas can be introduced into the heat exchanger body 1 through the air inlet 11. Inside the heat exchanger body 1, multiple inclined and staggered heat exchange plates 21 are arranged, which buffers the speed of the high-temperature exhaust gas to a certain extent. At the same time, the multiple heat-conducting rods 13 and the corresponding heat exchange plates 21 are in serpentine contact, which increases the contact area between the heat-conducting rods 13 and the heat exchange plates 21, allowing the heat exchange plates 21 to better exchange energy. When the cold fluid enters the heat exchanger body 1 and comes into contact with and mixes with the high-temperature exhaust gas, the high-temperature exhaust gas can react and cool down more quickly and completely under the action of the heat exchange plates 21, thereby improving the cooling effect and ensuring safety and reliability.
[0031] It is understood that both of the above-mentioned configuration methods satisfy the requirements of this application, and those skilled in the art can choose the appropriate configuration method according to the actual situation.
[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, it should be understood that an exhaust port is provided at the upper end of the heat exchanger body 1, so that the cold fluid can react inside the heat exchanger body 1 and then be discharged outside the heat exchanger body 1 through the exhaust port. When treating exhaust gas, high-temperature exhaust gas can be introduced into the heat exchanger body 1 through the inlet 11. Multiple inclined and staggered heat exchange plates 21 are provided inside the heat exchanger body 1. The high-temperature exhaust gas is slowed down by the obstruction of the heat exchange plates 21, and the cold fluid can enter from the cold flow port 12 at the lower end of the heat exchanger body 1. Thus, according to the arrangement of multiple heat exchange plates 21 and the slowed-down high-temperature exhaust gas, the flow is slowed down. The fusion of the cold fluid and the high-temperature exhaust gas allows for cooling. The serrated shape of the heat exchange plate 21 increases the contact area between the cold fluid and the heat exchange plate 21. Furthermore, the serrated or spiral contact between the multiple heat-conducting rods 13 and their corresponding heat exchange plates 21 further increases the contact area, enabling the heat exchange plate 21 to better exchange energy. When the cold fluid enters the heat exchanger body 1 and fused with the high-temperature exhaust gas, the heat exchange plate 21 facilitates a faster and more complete cooling reaction, thus improving the cooling effect and ensuring safety and reliability.
[0033] In this embodiment, as Figure 1 and Figure 2 As shown, it can be understood that in order to enable the high-temperature exhaust gas to react better, multiple through holes (not shown in the figure) are provided on the side of the heat exchange plate 21, so that the high-temperature exhaust gas can react with the cold fluid at a certain rate to cool down, thereby facilitating better reaction, improving reaction effect, and ensuring safety and practicality.
[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 heat exchanger based on microchannel enhanced heat transfer, characterized in that: It includes a heat exchanger body and a heat exchange mechanism disposed within the heat exchanger body; the side of the heat exchanger body is provided with an air inlet and a cold flow outlet respectively, and multiple heat-conducting rods are disposed inside the heat exchanger body, the multiple heat-conducting rods cooperating with the heat exchange mechanism; the exhaust gas is adapted to enter the heat exchanger body to enhance the heat transfer process through the multiple heat-conducting rods and the heat exchange mechanism, thereby performing heat exchange and cooling.
2. The heat exchanger based on microchannel enhanced heat transfer as described in claim 1, characterized in that: The heat exchange mechanism includes multiple heat exchange plates; the multiple heat exchange plates are arranged alternately inside the heat energy generator body.
3. The heat exchanger based on microchannel enhanced heat transfer as described in claim 2, characterized in that: The heat exchange plates are serrated and are arranged in an inclined and staggered manner on the heat exchanger body.
4. The heat exchanger based on microchannel enhanced heat transfer as described in claim 3, characterized in that: The included angle between the heat exchange plate and the heat energy generator body is α, where 30°≤α≤45°.
5. The heat exchanger based on microchannel enhanced heat transfer as described in claim 2, characterized in that: The heat-conducting rod and the corresponding heat exchange plate are arranged in a spiral shape.
6. The heat exchanger based on microchannel enhanced heat transfer as described in claim 2, characterized in that: The heat-conducting rod and the corresponding heat exchange plate are arranged in a serpentine pattern.
7. The heat exchanger based on microchannel enhanced heat transfer as described in claim 1, characterized in that: An exhaust port is provided at the upper end of the thermal energy generator body.
8. The heat exchanger based on microchannel enhanced heat transfer as described in claim 7, characterized in that: The heat exchange plate has multiple through holes on its side.