Efficient heat exchanger with bidirectional flow design and application method of efficient heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, and discloses an efficient heat exchanger with a bidirectional flow design and an application method thereof, and the efficient heat exchanger comprises a heat exchange shell used for containing a heat exchange assembly and forming a closed heat exchange space; the heat exchange tube is arranged in the heat exchange shell; the perforated spiral turbulent flow guide structure is arranged in an inner cavity of the heat exchange pipe, extends in the axial direction, and is used for guiding fluid to form bidirectional flow of a spiral path in the heat exchange pipe and disturbing the fluid at the same time; a plurality of through holes are formed in the perforated spiral turbulent flow guide structure and are used for communicating fluid channels on the two sides of the perforated spiral turbulent flow guide structure, so that hot fluid and cold fluid are locally and transversely exchanged in the pipeline; and a liquid inlet and a liquid outlet. The spiral turbulent flow guide structure with the holes is arranged in the heat exchange tube, so that the three functions of guide flow division, fluid disturbance and transverse flow passage are integrated, a structural system and a manufacturing process are simplified, and the stability of the heat exchanger is improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a high-efficiency heat exchanger with a bidirectional flow design and its application method. Background Technology

[0002] With the widespread application of heat exchange systems in industrial fluid control, energy recovery, and equipment cooling, the structure of heat exchangers is constantly evolving towards higher efficiency and compactness. In existing technologies, to improve heat exchange efficiency, guide vanes are often installed inside the heat exchange pipes to control the fluid path, turbulence elements are used to break the laminar flow state, and overflow holes or channels are provided to achieve lateral heat exchange between hot and cold media. These structures are usually designed as separate units and are fixed to the inner wall of the heat exchange tubes to achieve flow control and enhanced heat transfer.

[0003] However, this type of structure suffers from functional dispersion, resulting in a complex internal structure and low overall integration of the heat exchanger. In actual manufacturing and assembly, it not only increases the number of process steps but also easily leads to problems such as fitting errors and thermal expansion interference, which restricts the miniaturization design and performance stability of the heat exchanger. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-efficiency heat exchanger with a bidirectional flow design and its application method, solving the problem of functional dispersion in existing structures, which leads to complex internal structures and low overall integration of the heat exchanger.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency heat exchanger with a bidirectional flow design, comprising:

[0006] A heat exchange housing is used to house the heat exchange components and form a closed heat exchange space.

[0007] Heat exchange tubes are arranged inside the heat exchange shell;

[0008] A perforated spiral flow-guiding structure is provided in the inner cavity of the heat exchange tube and extends axially to guide the bidirectional flow of fluid in the heat exchange tube to form a spiral path, while also disturbing the fluid.

[0009] The perforated spiral flow guide structure is provided with multiple through holes, which are used to connect the fluid channels on both sides, so that the hot fluid and the cold fluid can be locally exchanged laterally inside the pipe.

[0010] The liquid inlet and liquid outlet are respectively located at the inlet end and outlet end of the heat exchange tube for the input and output of the heat exchange medium.

[0011] Through the above technical solution, an integrated perforated spiral turbulence guiding structure is set inside the heat exchange tube. This structure can not only guide the fluid to form a flow state with enhanced convection along the spiral path, but also realize the mixing between fluid channels through the through holes set on its surface. Thus, the three functions of guiding, turbulence and flow passage are unified in a single component. Compared with the existing technology, which requires setting multiple independent components such as guide vanes, turbulence elements and overflow holes, the present invention significantly simplifies the internal structure through structural integration design, reduces the complexity of manufacturing and assembly, and improves the overall reliability and engineering applicability of the heat exchanger.

[0012] Preferably, the perforated spiral turbulence guide structure is a spiral band, spiral rib, or spiral sheet-like component, and is fixedly connected to the inner wall of the heat exchange tube.

[0013] Preferably, the pitch of the perforated spiral turbulence guide structure is 1 to 2 times the inner diameter of the heat exchange tube.

[0014] Preferably, the diameter of the through hole is 5% to 20% of the inner diameter of the heat exchange tube, and it is arranged along the axial direction of the perforated spiral turbulence guide structure.

[0015] Preferably, the heat exchange tube is made of copper, aluminum or stainless steel.

[0016] Preferably, the heat exchange tubes are arranged in parallel, staggered, or interlaced arrangements within the heat exchange shell to form a heat exchange tube bundle structure.

[0017] Preferably, the heat exchange shell is a rectangular, cylindrical, or flat shell structure.

[0018] Preferably, the pressure difference between the inlet and outlet drives the heat exchange medium to form a mainstream path along the perforated spiral turbulence guide structure, and the through holes control local backflow and lateral mixing.

[0019] Preferably, an application method for a high-efficiency heat exchanger with a bidirectional flow design includes the following steps:

[0020] S1. Introduce the hot fluid into the heat exchange tube through the liquid inlet;

[0021] S2. Under the guidance of the perforated spiral flow-guiding structure, the fluid forms a bidirectional flow along the spiral path;

[0022] S3. Local cross-flow and mixing of hot and cold fluids on both sides of the perforated spiral turbulence guide structure are achieved through through holes;

[0023] S4. Enhances fluid disturbance and breaks laminar flow;

[0024] S5. The heat-exchanged fluid is discharged through the liquid outlet.

[0025] This invention provides a high-efficiency heat exchanger with a bidirectional flow design and its application method.

[0026] It has the following beneficial effects:

[0027] 1. This invention integrates three functions—guided flow splitting, fluid disturbance, and transverse flow—by setting a perforated spiral turbulence guiding structure inside the heat exchange tube. Compared with the complex design of the present invention, which requires separate setting of guide vanes, turbulence components, and through-hole structures, this invention simplifies the structural system and manufacturing process and improves the stability of the heat exchanger.

[0028] 2. This invention utilizes the spatial deviation and through-hole interconnection structure formed by the internal spiral configuration to guide the heat exchange medium to form a swirling bidirectional flow path within the heat exchange tube. No external pump set or baffle is required. The structure naturally drives the formation of a reverse shear layer and stratification disturbance, significantly enhancing the heat transfer interface and strengthening the convective heat transfer performance.

[0029] 3. By opening multiple through holes in the spiral guide structure, the present invention enables the heat fluid to form a transverse flow exchange inside, and automatically causes transverse mixing and energy redistribution in areas with large local temperature differences. This effectively avoids problems such as heat accumulation, overheating or dead zones at the cold end in the heat exchange tube, and improves the uniformity and controllability of the overall temperature field distribution.

[0030] 4. The heat exchange tubes of the present invention can be arranged in parallel, staggered or interlaced form inside the shell, which has a compact structure, occupies little space, and is suitable for equipment with limited installation space. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a high-efficiency heat exchanger with a bidirectional flow design according to the present invention;

[0032] Figure 2 This is a partial structural diagram of the heat exchange tube of a high-efficiency heat exchanger with bidirectional flow design according to the present invention.

[0033] Figure 3 This is a schematic diagram of the internal structure of the heat exchange tubes of a high-efficiency heat exchanger with a bidirectional flow design according to the present invention.

[0034] Figure 4 This is a partial structural diagram of the perforated spiral turbulence guide structure of a high-efficiency heat exchanger with bidirectional flow design according to the present invention;

[0035] Figure 5 This is a partial structural diagram of the through-hole of a high-efficiency heat exchanger with bidirectional flow design according to the present invention;

[0036] Figure 6 This is a flowchart illustrating the application method of a high-efficiency heat exchanger with a bidirectional flow design according to the present invention.

[0037] The components include: 1. Heat exchange shell; 2. Heat exchange tube; 3. Perforated spiral turbulence guide structure; 4. Liquid inlet; 5. Liquid outlet; and 6. Through hole. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides a high-efficiency heat exchanger with a bidirectional flow design, comprising:

[0040] Heat exchange housing 1 is used to house the heat exchange components and form a closed heat exchange space;

[0041] Heat exchange tube 2 is arranged inside heat exchange shell 1;

[0042] A perforated spiral turbulence guide structure 3 is disposed in the inner cavity of the heat exchange tube 2 and extends axially to guide the fluid to form a spiral path in the heat exchange tube 2 for bidirectional flow, and at the same time to turbulent the fluid.

[0043] The perforated spiral turbulence guide structure 3 is provided with multiple through holes 6, which are used to connect the fluid channels on both sides, so that the hot fluid and the cold fluid can be exchanged locally laterally inside the pipe.

[0044] The liquid inlet 4 and liquid outlet 5 are respectively located at the inlet end and outlet end of the heat exchange tube 2 for the input and output of the heat exchange medium.

[0045] Specifically, the heat exchange tube 2 is arranged inside the heat exchange shell 1, and a perforated spiral turbulence guide structure 3 extending axially is provided on its inner wall. This structure guides the fluid flow path and generates turbulence to enhance heat transfer efficiency. The liquid inlet 4 is provided at one end of the heat exchange tube 2 for introducing the heat exchange medium, and the liquid outlet 5 is provided at the other end of the heat exchange tube 2 for discharging the fluid after heat exchange. This structure can form a bidirectional spiral flow with swirling and counter-swirling components inside the tube, improving heat exchange performance and simplifying the structural system and manufacturing process to improve the stability of the heat exchanger.

[0046] Please see the appendix Figure 4 The perforated spiral turbulence guide structure 3 is a spiral band, spiral rib or spiral plate-like component, and is fixedly connected to the inner wall of the heat exchange tube 2.

[0047] Specifically, the perforated spiral turbulence guide structure 3 is a spiral plate, fixed on one side to the inner wall of the heat exchange tube 2, forming a spiral path uniformly along the axial direction. The spiral ribs or spiral bands can adopt a multi-segment combination structure, which is suitable for different heat exchange conditions.

[0048] Please see the appendix Figure 4 The pitch of the perforated spiral turbulence guide structure 3 is 1 to 2 times the inner diameter of the heat exchange tube 2.

[0049] Specifically, the pitch of the spiral turbulence guide structure 3 enhances the flow disturbance of the fluid without significantly increasing the pressure drop. For high-temperature and low-viscosity media, a structure with a pitch of 1.5 to 2 times can be used to achieve stronger fluid stratification and convection.

[0050] Please see the appendix Figure 3 -Appendix Figure 5 The diameter of the through hole 6 is 5% to 20% of the inner diameter of the heat exchange tube 2, and it is arranged along the axial direction of the perforated spiral turbulence guide structure 3.

[0051] Specifically, through holes 6 are evenly arranged on one side edge of the spiral blades, with one hole per turn. The diameter of each through hole 6 is about 10% of the inner diameter of the heat exchange tube 2. Through holes 6 can achieve lateral mixing of hot and cold fluids in different areas inside the tube, improve the temperature gradient distribution, and improve the overall heat exchange efficiency.

[0052] Please see the appendix Figure 2 The heat exchange tube 2 is made of copper, aluminum or stainless steel.

[0053] Specifically, thick-walled stainless steel tubes are selected for high-temperature and high-pressure scenarios; aluminum alloys are selected for lightweight heat exchanger structures.

[0054] Please see the appendix Figure 1 The heat exchange tubes 2 are arranged in parallel, staggered or interlaced arrangements within the heat exchange shell 1 to form a heat exchange tube bundle structure.

[0055] Specifically, the heat exchange tubes 2 can be arranged in a regular parallel array within the heat exchange shell 1, or they can be arranged in a staggered or interlaced manner to enhance the degree of fluid turbulence. In actual arrangement, multiple positioning holes or guide rails are preset in the shell 1 for installing heat exchange tube bundles with different arrangements to achieve compact layout and efficient flow guidance.

[0056] Please see the appendix Figure 1 The heat exchange shell 1 is a rectangular, cylindrical or flat shell structure.

[0057] Specifically, the heat exchange shell 1 is designed as a rectangular, cylindrical or flat box structure according to the installation space and structural requirements, among which the cylindrical shell is suitable for spiral fluid arrangement.

[0058] Please see the appendix Figure 1The pressure difference between the inlet 4 and the outlet 5 drives the heat exchange medium to form a mainstream path along the perforated spiral turbulence guide structure 3, and the through hole 6 controls local backflow and lateral mixing.

[0059] Specifically, during the heat exchange process, a certain pressure difference is formed between the liquid inlet 4 and the liquid outlet 5. The fluid is propelled in the main spiral path formed by the perforated spiral turbulence guide structure 3 and passes through the through hole 6 to the other side of the spiral blade, completing local reflux and cross mixing, thereby naturally forming bidirectional flow within the pipe cross section to achieve the purpose of enhancing heat exchange.

[0060] Please see the appendix Figure 6 An application method for a high-efficiency heat exchanger with a bidirectional flow design includes the following steps:

[0061] S1. Introduce the hot fluid into the heat exchange tube 2 through the liquid inlet 4;

[0062] S2. Under the guidance of the perforated spiral turbulence guide structure 3, the fluid forms a bidirectional flow along the spiral path;

[0063] S3. Local cross-flow and mixing of hot and cold fluids on both sides of the perforated spiral turbulence guide structure 3 are achieved through the through hole 6;

[0064] S4. Enhances fluid disturbance and breaks laminar flow;

[0065] S5, the heat-exchanged fluid is discharged through outlet 5.

[0066] Specifically, the heat medium enters the heat exchange tube 2 through the liquid inlet 4, and forms a spiral main path under the guidance of the perforated spiral turbulence guide structure 3. It also achieves transverse flow through the through hole 6. The hot and cold fluids form a spiral alternating structure on the perforated spiral turbulence guide structure 3. At the same time, the laminar flow state is disrupted by the perforated spiral turbulence guide structure 3, which improves the turbulent heat exchange effect. After sufficient heat exchange, the fluid is discharged from the liquid outlet 5, completing the entire heat exchange process.

[0067] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat exchanger with a bidirectional flow design, characterized in that, include: Heat exchange housing (1) is used to house the heat exchange components and form a closed heat exchange space; Heat exchange tubes (2) are arranged inside the heat exchange shell (1); A perforated spiral turbulence guide structure (3) is provided in the inner cavity of the heat exchange tube (2) and extends axially to guide the fluid to form a spiral path in the heat exchange tube (2) for bidirectional flow, and at the same time to turbulence the fluid. The perforated spiral turbulence guide structure (3) is provided with multiple through holes (6), which are used to connect the fluid channels on both sides, so that the hot fluid and the cold fluid can be exchanged locally in the pipe. The liquid inlet (4) and liquid outlet (5) are respectively located at the inlet end and outlet end of the heat exchange tube (2) for inputting and outputting the heat exchange medium.

2. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The perforated spiral turbulence guide structure (3) is a spiral strip, spiral rib or spiral sheet component, and is fixedly connected to the inner wall of the heat exchange tube (2).

3. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The pitch of the perforated spiral turbulence guide structure (3) is 1 to 2 times the inner diameter of the heat exchange tube (2).

4. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The diameter of the through hole (6) is 5% to 20% of the inner diameter of the heat exchange tube (2), and it is arranged along the axial direction of the perforated spiral turbulence guide structure (3).

5. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The heat exchange tube (2) is made of copper, aluminum or stainless steel.

6. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The heat exchange tubes (2) are arranged in parallel, staggered or interlaced arrangements within the heat exchange shell (1) to form a heat exchange tube bundle structure.

7. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The heat exchange shell (1) is a rectangular, cylindrical or flat shell structure.

8. The high-efficiency heat exchanger with bidirectional flow design according to claim 1, characterized in that, The pressure difference between the inlet (4) and outlet (5) drives the heat exchange medium to form a mainstream path along the perforated spiral turbulence guide structure (3), and the through hole (6) controls local backflow and lateral mixing.

9. An application method of a high-efficiency heat exchanger with a bidirectional flow design, characterized in that, A high-efficiency heat exchanger for the bidirectional flow design according to any one of claims 1-8, comprising the following steps: S1. Introduce the hot fluid into the heat exchange tube (2) through the liquid inlet (4); S2. Under the guidance of the perforated spiral turbulence guide structure (3), the fluid forms a bidirectional flow along the spiral path; S3. Local cross-flow and mixing of hot and cold fluids on both sides of the perforated spiral turbulence guide structure (3) are achieved through the through hole (6); S4. Enhances fluid disturbance and breaks laminar flow; S5. The heat-exchanged fluid is discharged through the liquid outlet (5).

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