High-viscosity fluid heat exchanger with TPMS (Tire Pressure Monitor System) heat exchange core body
By introducing the TPMS heat exchange core structure into the shell-and-tube heat exchanger, the boundary layer of the high-viscosity fluid is broken, turbulent mixing is promoted and the heat transfer area is increased, thus solving the problem of low heat transfer efficiency of the high-viscosity fluid heat exchanger and achieving efficient and reliable heat transfer effects.
Patent Information
- Application Number
- CN202422333554.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-09-24
AI Technical Summary
When existing shell-and-tube heat exchangers exchange heat with high-viscosity fluids, the fluid forms a stagnant inner layer near the tube wall, resulting in large thermal resistance and low heat transfer efficiency. In addition, the structure is complex, the specific surface area is small, and the heat transfer effect is poor.
The TPMS heat exchange core structure is adopted to break the boundary layer of high-viscosity fluid through periodic expansion of the flow channel, promote turbulent mixing and increase the heat transfer area, and utilize the periodic disturbance of the TPMS core structure to enhance heat transfer and reduce pressure drop.
Significantly improve heat transfer performance, enhance heat transfer efficiency, reduce the possibility of clogging, and achieve high-reliability heat exchange for high-viscosity fluids.
Smart Images
Figure CN223332234U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, and in particular to a high-viscosity fluid heat exchanger containing a TPMS heat exchange core based on structurally enhanced heat transfer. Background Art
[0002] The fluid in a shell-and-tube heat exchanger flows in a hollow tube, and the flow velocity in the tube is parabolic. The fluid has the highest flow velocity at the axis of the tube and the lowest flow velocity close to the tube wall. If a high-viscosity fluid (liquid with high viscosity and poor fluidity) flows in the tube, the flow velocity close to the tube wall is close to zero, resulting in a nearly flat stagnant inner layer near the tube wall, which creates a large thermal resistance to the heat exchange of the fluid and greatly reduces the heat exchange efficiency. It is not suitable for heat exchange of high-viscosity fluids.
[0003] The heat exchange capacity of the heat exchanger is limited. Since the hydraulic diameter of its channel is usually near the conventional scale and above the microscale, and the cold and hot fluids are not sufficiently disturbed and are relatively independent of each other, the heat exchanger has a small specific surface area and poor heat exchange effect, which in turn makes the heat exchanger larger in size and weight.
[0004] Therefore, the inventors, relying on their many years of experience and practice in related industries, have proposed a high-viscosity fluid heat exchanger containing a TPMS heat exchange core to overcome the defects of the prior art. Utility Model Content
[0005] The purpose of this utility model is to provide a high-viscosity fluid heat exchanger incorporating a TPMS heat exchange core, overcoming the relatively low heat transfer coefficient, complex structure, and loose construction of existing shell-and-tube heat exchangers, which result in poor heat transfer. This utility model utilizes the TPMS core structure to break the boundary layer of high-viscosity fluids through periodically expanding flow channels. Through the extended surface, periodic perturbations, and boundary layer disruption, heat transfer is significantly and continuously enhanced at a minimal pressure drop.
[0006] The purpose of the present utility model is achieved as follows: a high-viscosity fluid heat exchanger containing a TPMS heat exchange core comprises a heat exchanger body, a heat exchange portion is arranged in the heat exchanger body, the heat exchange portion comprises a TPMS core structure and a heat exchange tube, the side wall of the TPMS core structure is provided with a periodically expanding flow channel for promoting turbulent mixing, breaking the boundary layer of the high-viscosity fluid and increasing the heat transfer area, a heat medium inlet pipe and a heat medium outlet pipe are provided on the heat exchanger body, and a feed port and a discharge port are respectively provided at both ends of the heat exchanger body.
[0007] In a preferred embodiment of the present invention, the TPMS core structure includes a plurality of TPMS heat exchange core units, and two upper and lower adjacent TPMS heat exchange core units intersect at a boundary.
[0008] In a preferred embodiment of the present invention, the heat exchanger body includes a hollow shell with openings at both ends, and a first flange tube sheet and a second flange tube sheet are respectively provided at both ends of the shell. The first end of the shell is connected to the feed head through the first flange tube sheet, and the second end of the shell is connected to the discharge head through the second flange tube sheet.
[0009] In a preferred embodiment of the present invention, there are multiple heat exchange tubes, and both ends of each heat exchange tube are fixedly supported on the first flange tube sheet and the second flange tube sheet respectively.
[0010] In a preferred embodiment of the present invention, the shell support is arranged on a support.
[0011] In a preferred embodiment of the present invention, the feed port is provided on the feed sealing head, and the discharge port is provided on the discharge sealing head.
[0012] In a preferred embodiment of the present invention, the heat medium outlet pipe is provided at the top end of the side wall of the shell close to the first end, and the heat medium inlet pipe is provided at the bottom end of the side wall of the shell close to the second end.
[0013] In a preferred embodiment of the present invention, the bottom ends of the feed sealing head and the discharge sealing head are both provided with discharge ports.
[0014] In a preferred embodiment of the present invention, the first flange tube sheet is connected to the feed head via bolts, and the second flange tube sheet is connected to the discharge head via bolts.
[0015] As described above, the high-viscosity fluid heat exchanger containing the TPMS heat exchange core of the present invention has the following beneficial effects:
[0016] The utility model realizes fluid redistribution through the TPMS core structure, thereby controlling the heat exchange in the core and making the heat exchange uniform in the core. A certain uniformly distributed resistance can reduce the sensitivity of the core to the inlet conditions. Secondly, the fluids are mixed with each other, and the fluid can be periodically disturbed on the basis of rebuilding the boundary layer, thereby greatly enhancing the overall heat transfer performance. Finally, the TPMS core structure can effectively reduce the possibility of blockage due to the existence of continuous disturbance, and realize high-reliability heat exchange of high-viscosity fluids. The TPMS core structure increases the heat transfer area and further improves the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.
[0018] Figure 1 This is a schematic diagram of a high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to the present invention.
[0019] Figure 2 This is a schematic diagram of the TPMS core structure of the present invention.
[0020] Figure 3 It is a schematic cross-sectional view of the heat exchange tube of the present invention.
[0021] In the picture:
[0022] 1. Feed header; 2. First flange tube sheet; 3. Heat medium outlet pipe; 4. Shell; 5. TPMS core structure; 6. Heat exchange tube; 7. Discharge header; 8. Heat medium inlet pipe; 9. Support; 10. Discharge port; 11. Second flange tube sheet. DETAILED DESCRIPTION
[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.
[0024] The specific embodiments of the present invention described herein are intended solely for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way. In light of the present invention, skilled artisans may conceive of any possible variations based on the present invention, all of which should be considered within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, to mean a mechanical or electrical connection, or internal communication between two elements, either directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] like Figures 1 to 3As shown, the utility model provides a high-viscosity fluid heat exchanger containing a TPMS heat exchange core, which is a shell-and-tube heat exchanger; it includes a heat exchanger body, a heat exchange part is arranged in the heat exchanger body, the heat exchange part includes a TPMS core structure 5 and a heat exchange tube 6, the side wall of the TPMS core structure 5 is provided with a periodically expanding flow channel for promoting turbulent mixing, breaking the boundary layer of the high-viscosity fluid and increasing the heat transfer area, a heat medium inlet pipe 8 and a heat medium outlet pipe 3 are provided on the heat exchanger body, and a feed port and a discharge port are respectively provided at both ends of the heat exchanger body.
[0027] The TPMS (Triply Periodic Minimal Surfaces) structure is a triply periodic minimum surface. TPMS has a high specific surface area and excellent heat transfer properties. A triply periodic minimum surface is an R3 surface in three-dimensional space, meaning that the average curvature (H) of all points within the plane is zero. This average curvature is given by H = (k1 + k2) / 2, where k1 and k2 are the principal curvatures. The TPMS consists of minimal surface units that are periodically distributed in three independent directions.
[0028] Heat exchangers employing TPMS can improve overall thermal performance by 15-100%. From a mathematical perspective, a surface with the smallest local area is called a minimum surface. For a given boundary, a minimum surface is the surface with the smallest area covering that boundary. Therefore, a minimum surface has smooth curvature and no sharp corners. A TPMS topology without self-intersections can partition space into two disjointed but interwoven channels that are simultaneously continuous. The inherent lack of sharp edges in an interwoven structure enhances fluid dynamics. As the principles of fluid dynamics indicate, a gradual expansion or contraction of a flow channel results in much lower pressure drop than a sudden contraction or expansion. The curved topology allows for smooth flow through the channels, theoretically minimizing pressure drop. The resulting increased turbulence of the TPMS's interpenetrating structure improves heat and mass transfer. The TPMS structure exhibits advanced mechanical properties and anti-fouling capabilities due to its local topological smoothness. The TPMS topology is derived using the level set approximation technique. The TPMS topology exhibits cubic symmetry and repeats in three-dimensional space. The TPMS topology partitions space into a network of two or more interconnected volumes.
[0029] The TPMS core structure 5 uses periodically expanding flow channels to break up the boundary layer of high-viscosity fluids. Through the extended surface, periodic perturbations, and boundary layer disruption, heat transfer is significantly and continuously enhanced at a minimal pressure drop. The advantage of the three-periodic minimum surface structure lies not only in its complex interconnected channels, which promote turbulent mixing, but also in the increased heat transfer area, further improving heat transfer efficiency.
[0030] The present invention realizes fluid redistribution through the TPMS core structure 5, thereby controlling the heat exchange in the core and making the heat exchange uniform in the core. A certain uniformly distributed resistance can reduce the sensitivity of the core to inlet conditions. Secondly, the fluids are mixed with each other, and the fluid can be periodically disturbed on the basis of rebuilding the boundary layer, thereby greatly enhancing the overall heat transfer performance. Finally, the TPMS core structure 5 can effectively reduce the possibility of blockage due to the existence of continuous disturbance, and realize high-reliability heat exchange of high-viscosity fluids. The TPMS core structure increases the heat transfer area and further improves the heat transfer efficiency.
[0031] Further, if Figure 2 As shown, the TPMS core structure 5 includes a plurality of TPMS heat exchange core units arranged mutually, and two upper and lower adjacent TPMS heat exchange core units intersect at the boundary.
[0032] Further, if Figure 1 As shown, the heat exchanger body includes a hollow shell 4 with openings at both ends, and a first flange tube sheet 2 and a second flange tube sheet 11 are respectively provided at both ends of the shell 4. The first end of the shell 4 is connected to the feed head 1 through the first flange tube sheet 2, and the second end of the shell 4 is connected to the discharge head 7 through the second flange tube sheet 11.
[0033] The housing 4 is in the shape of a hollow cuboid or a hollow cylinder.
[0034] Further, if Figure 1 As shown, there are multiple heat exchange tubes 6, and both ends of each heat exchange tube 6 are supported and fixed on the first flange tube sheet 2 and the second flange tube sheet 11. The cross-sectional diagram of the arrangement of multiple heat exchange tubes 6 is shown in FIG. Figure 3 shown.
[0035] Further, if Figure 1 As shown, the housing 4 is supported on a support 9. The support 9 is arranged in a split leg structure, with two legs supporting the two ends of the housing 4 respectively.
[0036] Further, if Figure 1 As shown, a feed port is provided on the feed head 1 and a discharge port is provided on the discharge head 7.
[0037] Further, if Figure 1 As shown, a heat medium outlet pipe 3 is provided at the top end of the side wall of the shell 4 close to the first end, and a heat medium inlet pipe 8 is provided at the bottom end of the side wall of the shell 4 close to the second end.
[0038] Further, if Figure 1 As shown, a discharge port 10 is provided at the bottom end of the feed head 1 and the discharge head 7 .
[0039] Furthermore, in a specific embodiment of the present invention, the first flange tube sheet 2 is connected to the feed head 1 through bolts, and the second flange tube sheet 11 is connected to the discharge head 7 through bolts.
[0040] During implementation of the present invention, the first flange tube sheet 2 and the second flange tube sheet 11 are welded to both ends of the shell 4, and the support 9 is welded to the bottom of the shell 4. The heat medium outlet pipe 3 and the heat medium inlet pipe 8 are respectively welded to both ends of the shell 4 near the first flange tube sheet 2 and the second flange tube sheet 11, and the discharge port 10 is respectively welded to the bottom of the feed head 1 and the discharge head 7.
[0041] As described above, the high-viscosity fluid heat exchanger containing the TPMS heat exchange core of the present invention has the following beneficial effects:
[0042] The utility model realizes fluid redistribution through the TPMS core structure, thereby controlling the heat exchange in the core and making the heat exchange uniform in the core. A certain uniformly distributed resistance can reduce the sensitivity of the core to the inlet conditions. Secondly, the fluids are mixed with each other, and the fluid can be periodically disturbed on the basis of rebuilding the boundary layer, thereby greatly enhancing the overall heat transfer performance. Finally, the TPMS core structure can effectively reduce the possibility of blockage due to the existence of continuous disturbance, and realize high-reliability heat exchange of high-viscosity fluids. The TPMS core structure increases the heat transfer area and further improves the heat transfer efficiency.
[0043] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.
Claims
1. A high-viscosity fluid heat exchanger containing a TPMS heat exchange core, characterized in that: It includes a heat exchanger body, in which a heat exchange part is arranged. The heat exchange part includes a TPMS core structure and a heat exchange tube. The side wall of the TPMS core structure is provided with a periodically expanding flow channel for promoting turbulent mixing, breaking the boundary layer of high-viscosity fluid and increasing the heat transfer area. A heat medium inlet pipe and a heat medium outlet pipe are provided on the heat exchanger body, and a feed port and a discharge port are respectively provided at both ends of the heat exchanger body.
2. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 1, characterized in that: The TPMS core structure includes a plurality of TPMS heat exchange core units, and two upper and lower adjacent TPMS heat exchange core units intersect at a boundary.
3. The high-viscosity fluid heat exchanger containing the TPMS heat exchange core according to claim 2, characterized in that: The heat exchanger body includes a hollow shell with openings at both ends, and a first flange tube sheet and a second flange tube sheet are respectively provided at both ends of the shell. The first end of the shell is connected to the feed head through the first flange tube sheet, and the second end of the shell is connected to the discharge head through the second flange tube sheet.
4. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: There are multiple heat exchange tubes, and both ends of each heat exchange tube are fixedly supported on the first flange tube sheet and the second flange tube sheet respectively.
5. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: The shell support is arranged on a support.
6. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: The feed port is arranged on the feed sealing head, and the discharge port is arranged on the discharge sealing head.
7. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: The heat medium outlet pipe is arranged at the top end of the side wall of the shell close to the first end, and the heat medium inlet pipe is arranged at the bottom end of the side wall of the shell close to the second end.
8. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: The bottom ends of the feed sealing head and the discharge sealing head are both provided with discharge ports.
9. The high-viscosity fluid heat exchanger containing a TPMS heat exchange core according to claim 3, characterized in that: The first flange tube sheet is connected to the feed head through bolts, and the second flange tube sheet is connected to the discharge head through bolts.