Adjustable arc-shaped shunting cooling structure
Through the adjustable design of the three-stage arc-shaped bent plate, the problems of poor adaptability and immutability of curvature of the traditional motor cooling structure are solved, and multi-mode switching and dynamic curvature adjustment are realized, which improves the motor cooling efficiency and operation convenience.
Patent Information
- Application Number
- CN202510522193.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2025-08-15
AI Technical Summary
The arc-shaped split structure of the external air path of the traditional motor cannot adjust the number of bent plates according to the air volume demand, resulting in eddy currents generated under high air volume conditions and redundant resistance under low air volume conditions. The immutable curvature leads to turbulence formation, poor adaptability, high cost of replacing components and complex operation.
The three-stage independent arc curved plate is adopted to realize the switching of the modes of single plate, double plate and three plates and dynamic curvature adjustment through the hinge connection mechanism and curvature adjustment link. The controllable folding and expansion of the curved plate is achieved through the Bernoulli principle and the flow velocity distribution is optimized.
Multi-mode adaptation is achieved, reducing wind resistance, improving heat dissipation efficiency, convenient operation, reducing maintenance costs, and improving system responsiveness and adaptability.
Smart Images
Figure CN120487642A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of asynchronous motor cooling, and in particular relates to an adjustable arc-shaped shunt cooling structure. Background Art
[0002] The traditional motor external air path adopts a fixed arc-shaped diversion structure, which has the following problems:
[0003] 1. Single diversion mode: The number of curved plates cannot be adjusted according to air volume requirements. Eddy currents are easily generated under high air volume conditions, and resistance is redundant under low air volume conditions.
[0004] 2. Curvature is not variable: Fixed curvature is difficult to match the dynamic flow velocity distribution, and turbulence is formed in local high-speed areas, reducing heat transfer efficiency;
[0005] 3. Poor adaptability: Existing structures (such as single-bend plates or double-bend plates) require overall replacement of components to adapt to different working conditions, which is costly and complex to operate.
[0006] Based on the above problems, there is an urgent need for a manually adjustable arc-shaped diversion structure that optimizes airflow distribution through multi-mode switching and dynamic adjustment of curvature. Summary of the Invention
[0007] In view of the problems existing in the prior art, the present invention provides an adjustable arc-shaped diversion cooling structure.
[0008] The present invention is achieved by providing an adjustable arc-shaped flow-dividing cooling structure, comprising a flow-dividing device 1), a hinge connection mechanism 2), and a curvature-adjusting connecting rod 3. The flow-dividing device 1 comprises three independently curved plates 101, 102, and 103, each of which is divided into two sections and movably connected by the hinge connection mechanism 2. The curvature-adjusting connecting rod 3 is hingedly connected to each curved plate to adjust the curvature radius of the curved plate. The curved plates 101, 102, and 103 can be folded into a single-plate mode, a double-plate mode, or a triple-plate mode.
[0009] In the single-board mode, the second section curved plate 102) and the third section curved plate 103) are folded to a closed position, and only the first section curved plate 101) is unfolded; in the double-board mode, the second section curved plate 102) and the third section curved plate 103) are unfolded, and the first section curved plate 101) is folded to a closed position; in the three-board mode, the three sections curved plates 101, 102, and 103) are all unfolded, and the overall curvature can be adjusted by the curvature adjustment link 3).
[0010] Furthermore, the hinge connection mechanism 2) includes a rotation axis 201) and a limit buckle 202), and the limit buckle 202) is used to fix the expansion angle of the bending plate.
[0011] Furthermore, the curvature adjustment link 3) includes a main link 301), auxiliary links 302, 303) and a linear groove 304), the main link 301) is hinged to the third section of the curved plate 103), the auxiliary link 302) is used to hinge the third section and the second section of the curved plate, and the auxiliary link 303) is used to hinge the second section and the first section of the curved plate. The curvature radius is changed by adjusting the movement of the main link 301).
[0012] Furthermore, one end of the main connecting rod 301) is hinged to the third bent plate 103), and the other end is confined in a linear groove 304) of the housing. The movement of the main connecting rod 301) is a linear movement up and down.
[0013] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:
[0014] 1. Multi-mode adaptation: The folding design enables quick switching between single-board, double-board and triple-board modes to reduce wind resistance;
[0015] 2. Dynamic curvature adjustment: Optimize flow velocity distribution based on Bernoulli principle to improve heat dissipation efficiency;
[0016] 3. Easy operation: Manual adjustment does not require a complex control system, with low maintenance costs and high reliability.
[0017] The "adjustable arc-shaped diverter cooling structure" proposed in the present invention addresses the problems of fixed structure, poor adaptability, and weak flow field control capabilities of existing cooling devices, and provides a modular design solution with adjustable curvature and diverter channel structure. Traditional fixed guide plates are unable to dynamically match the optimal heat exchange channel shape when faced with changing working environments and hot and cold loads, which can easily lead to local heat accumulation, boundary layer thickening, and increased pressure drop. The present invention achieves multi-level structural states (single plate / double plate / triple plate) and continuous adjustment of curvature through the coordinated work of a hinge connection mechanism and a curvature adjustment link, effectively improving the responsiveness and environmental adaptability of the guide structure.
[0018] In terms of structural innovation, this technology utilizes a three-section modular bending plate design, supplemented by a main connecting rod with a programmable motion trajectory and a limit groove structure. This solves the contradiction that traditional deflectors cannot achieve folding and unfolding while maintaining spatial integrity. The hinge connection mechanism locks the angle position with a limit buckle, preventing misadjustment caused by equipment vibration or airflow disturbances, ensuring the stability and reliability of the bending plate during dynamic operation. Furthermore, the linear groove limits the main connecting rod's motion trajectory to a single dimension, making curvature adjustment highly repeatable and controllable.
[0019] To enhance thermal fluid performance, this structure directly changes the shape of the local airflow channel by controllably adjusting the curvature radius of the flow guide, thereby reshaping the flow field distribution. Low curvature enhances flow velocity and turbulence intensity, improving the convective heat transfer coefficient; high curvature mitigates the gradient of the airflow path, reducing pressure loss and the risk of boundary layer separation. Compared to fixed structures, this technology allows for active regulation of airflow distribution under different operating conditions, thereby improving heat dissipation efficiency, reducing energy consumption, and extending equipment life.
[0020] In summary, this invention achieves a transition from a single static structure to a programmable dynamic one, offering significant engineering adaptability and control flexibility. Its technological advancement lies not only in its structural reconfigurability and modular combination capabilities, but also in the implementation of a thermal-fluid field collaborative optimization strategy. This advances the paradigm shift in cooling channel design from "passive heat dissipation" to "active guidance and control," and has broad engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional schematic diagram of the arc-shaped diversion cooling structure of the present invention;
[0022] Figure 2 Schematic diagram of the structure of the hinge connection mechanism and the curvature adjustment link;
[0023] Figure 3 It is a structural diagram of a straight groove;
[0024] Figure 4 Schematic diagram of the structure of single-board, double-board and triple-board modes;
[0025] Figure 5 Schematic diagram of the structure with small curvature and large curvature in the three-plate mode. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0027] like Figure 1-5 As shown, an embodiment of the present invention provides an adjustable arc-shaped diverter cooling structure, which includes a diverter device 1, a hinge connection mechanism 2, and a curvature adjustment link 3. The diverter device 1 is composed of three independent arc-shaped bent plates 101, 102, and 103. Each bent plate is divided into two sections and movably connected by the hinge connection mechanism 2. The curvature adjustment link 3 is hinged to each bent plate to adjust the curvature radius of the bent plate. The arc-shaped bent plates 101, 102, and 103 can be folded into a single-plate mode, a double-plate mode, or a triple-plate mode.
[0028] In the single-plate mode, the second section of the curved plate 102 and the third section of the curved plate 103 are folded to a closed position, and only the first section of the curved plate 101 is unfolded; in the double-plate mode, the second section of the curved plate 102 and the third section of the curved plate 103 are unfolded, and the first section of the curved plate 101 is folded to a closed position; in the three-plate mode, the three sections of the curved plates 101, 102, and 103 are all unfolded, and the overall curvature can be adjusted by the curvature adjustment link 3; in the small curvature mode, the airflow path is contracted, the flow rate is increased, and the heat exchange is enhanced; in the large curvature mode, the airflow path is smooth, the boundary layer separation is reduced, and the pressure loss is reduced.
[0029] Furthermore, the hinge connection mechanism 2 includes a rotating shaft 201 and a limiting buckle 202, and the limiting buckle 202 is used to fix the expansion angle of the bending plate.
[0030] Furthermore, the curvature adjustment link 3 includes a main link 301, auxiliary links 302, 303 and a straight groove 304. The main link 301 is hinged to the third section of the bent plate 103, the auxiliary link 302 is used to hinge the third section and the second section of the bent plate, and the auxiliary link 303 is used to hinge the second section and the first section of the bent plate. The curvature radius is changed by adjusting the movement of the main link 301.
[0031] Furthermore, one end of the main connecting rod 301 is hinged to the third bent plate 103, and the other end is confined in a linear groove 304 of the housing. The movement of the main connecting rod 301 is an up and down linear movement.
[0032] Single board mode adjustment: move the main connecting rod 301 downward to the lowermost end of the straight groove 304, fold the second section of the bent plate 102 and the third section of the bent plate 103 to the closed position, lock the limit buckle 202, and unfold the first section of the bent plate 101.
[0033] Double-plate mode adjustment: Loosen the limit buckle 202 to move the main connecting rod 301 upward until the first curved plate 101 blocks the upper air outlet, the limit buckle 202 is locked, the second curved plate 102 and the third curved plate 103 are unfolded, and the airflow is guided through the double curved plates.
[0034] Three-panel mode and curvature adjustment: Loosen the limit buckle 202 and move the main connecting rod 301 downward until the three curved panels 101, 102, and 103 are fully extended. Further, moving the main connecting rod 301 downward at this point can reduce the curvature of the three panels, accelerating the airflow. Further, moving the main connecting rod 301 upward at this point can increase the curvature of the three panels and evenly distribute the airflow. Lock the limit buckle 202 after each adjustment.
[0035] This structure achieves modular flow channel formation through three-section curved plates 101, 102, and 103, providing reconfigurable flow guidance capabilities. Each curved plate segment is connected by a hinge connection mechanism 2, enabling multi-degree-of-freedom rotation. In actual operating conditions, based on thermal load distribution and spatial structural constraints, the cooling channel can be switched between three basic configurations: single-plate, double-plate, and triple-plate. This provides the system with excellent operating adaptability and variable structural responsiveness.
[0036] The main link 301 in the curvature adjustment link 3 is guided and constrained by a linear groove 304, achieving single-degree-of-freedom linear motion. This in turn drives the auxiliary links 302 and 303 to adjust the angle between the curved plates. This mechanism forms a spatial four-bar closed-loop structure, whose kinematic behavior follows the crank-rocker principle of mechanics. By precisely adjusting the position of the main link, the overall curvature radius of the three-plate arc segment can be continuously controlled, achieving active reconstruction of the airflow channel geometry on a macroscale.
[0037] In single-plate mode, only the first curved plate 101 is deployed, forming a short channel configuration suitable for low loads or localized cooling needs. In dual-plate mode, airflow is guided along a curved line through the middle two curved plates, offering moderate curvature and a moderate expansion ratio, suitable for moderate heat transfer requirements. In triple-plate mode, a complete curved flow channel is formed, offering excellent geometric continuity, helping to maintain flow field stability and boundary layer integrity. Further adjustment of the curvature in this mode allows for precise control of the airflow path length and turning radius, achieving comprehensive optimization of flow rate, pressure loss, and heat transfer intensity.
[0038] When the main connecting rod 301 moves downward to its lowest position, the radius of curvature decreases, the channel path turns sharply, and the fluid experiences secondary flow, shear enhancement, and turbulence augmentation as it passes through the small curvature section at high speed. This significantly increases the local Reynolds number, promoting the destruction and renewal of the thermal boundary layer and enhancing the convective heat transfer coefficient (h). This state is particularly suitable for rapid heat exchange regulation in areas with sudden heat flux increases.
[0039] The upward movement of the main connecting rod causes the three curved plates to gradually flatten, forming a highly curvatured or even nearly straight channel. In this state, the airflow path becomes smoother, streamline continuity is improved, secondary vortices are effectively suppressed, and boundary layer stability is enhanced, significantly reducing local flow separation and pressure drop (ΔP). This is suitable for operating scenarios where total system pressure is limited or the fan load is sensitive, improving overall energy efficiency.
[0040] The limit buckle 202 is a mechanical self-locking structure with a multi-position positioning function. After each mode or curvature adjustment is completed, the limit buckle locks the hinge angle, effectively suppressing structural rebound or error accumulation caused by aerodynamic loads or structural vibration, ensuring the system's structural rigidity and posture are maintained during long-term operation. Furthermore, this locking mechanism simplifies the actuator control logic, avoids complex servo adjustments, and improves the system's engineering feasibility and operational reliability.
[0041] Example 1: Small space enhanced heat exchange application in single-board mode
[0042] In thermal management scenarios where the space is closed or the cooling path is limited (such as inside the housing of a high-density power electronic module), the main connecting rod 301 is moved downward along the linear groove 304 to the lowest point, driving the third section of the bent plate 103 and the second section of the bent plate 102 to fold in sequence. After the limit buckle 202 is locked, only the first section of the bent plate 101 remains in the unfolded state, forming a single-plate guide channel. This mode significantly increases the airflow speed (increases the Reynolds number) by locally narrowing the air duct, thereby enhancing the convective heat transfer coefficient (h) of the heat exchange surface of the first section of the bent plate 101. At the same time, due to the limited airflow, the boundary layer development length is shortened, effectively avoiding the accumulation of the thermal boundary layer. It is suitable for the primary cooling section of equipment with dense heat flux but limited space.
[0043] Example 2: Application of large curvature mode to reduce pressure loss in the three-plate deployment state
[0044] In an open cooling system (such as the air-cooling channel of a rail transit traction system), loosen the limit buckle 202 and adjust the main connecting rod 301 to move upward to the middle section so that the three sections of the bent plates 101, 102, and 103 are all in a fully expanded state. The main connecting rod 301 limits the upper end of the linear groove 304 to increase the overall curvature radius. In this large curvature state, the bending ratio is significantly improved, the airflow channel is smoother, and the pressure drop is significantly reduced. Based on the fluid continuity equation and the Navier-Stokes boundary layer theory, the larger curvature radius suppresses secondary flow and turbulent redistribution, reduces flow separation, and is suitable for mid- and rear-stage heat dissipation structures that require stable airflow and uniform heat exchange.
[0045] Both of these operating conditions rely on the linear slip constraint between the main connecting rod 301 and the linear groove 304. By changing the coordinates of the connecting rod's motion endpoints, the folded and unfolded state of the bent plate and its combined curvature are controlled, thereby achieving geometric adjustability of the duct cross-section. In the design of the hot channel system, a combination of discrete segment and continuous curvature adjustment is provided, enabling adaptive pressure regulation and airflow guidance across various operating conditions.
[0046] For further application in CFD simulation or structural thermal coupling analysis, the three-segment curved plate can be modeled as a multi-segment curved plate under variable boundary conditions. The arc shape change can be parameterized using Bézier curve functions to achieve higher-order curvature control strategies and windage-optimized path design.
[0047] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.
Claims
1. An adjustable arc-shaped shunt cooling structure, characterized in that: include, A flow diversion device (1), a hinge connection mechanism (2) and a curvature adjustment link (3), The diversion device (1) is composed of three independent arc-shaped curved plates (101, 102, 103), each of which is composed of two plate bodies and connected by the hinge connection mechanism (2). The curvature adjustment connecting rod (3) comprises a main connecting rod (301), auxiliary connecting rods (302, 303) and a linear groove (304) provided on the housing. One end of the main connecting rod (301) is hinged to the third section of the bent plate (103), and the other end is slidably limited in the linear groove (304). The auxiliary connecting rod (302) is hinged between the third section curved plate (103) and the second section curved plate (102). The auxiliary connecting rod (303) is hinged between the second section of the bent plate 102) and the first section of the bent plate 101). The curvature adjustment connecting rod (3) is used to drive the curved plates to form a combined structure with variable curvature, and the three sections of curved plates can form a single plate mode, a double plate mode or a triple plate mode.
2. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: The hinge connection mechanism (2) comprises a rotating shaft (201) and a limiting buckle (202).
3. The adjustable arc-shaped diversion cooling structure according to claim 1 or 2, characterized in that: The bent plates (101, 102, 103) are respectively connected to form a foldable structure via the hinge connection mechanism (2), and each section of the bent plate is composed of two sub-plates.
4. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: The main connecting rod (301) moves linearly up and down along the linear groove (304).
5. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: The linear groove (304) is arranged longitudinally and is located in the middle area of the shell of the structure.
6. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: The auxiliary connecting rods (302, 303) are respectively hinged to adjacent bent plate sections to form a spatial four-bar linkage.
7. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: The limiting buckle (202) is provided on the hinge connection mechanism (2) and is used to limit the relative rotation angle of the bent plate.
8. The adjustable arc-shaped diversion cooling structure according to claim 1, characterized in that: Each of the three sections of curved plates (101, 102, 103) has an arc-shaped cross section, and the center of curvature of the curved plate is located near the internal axis of the structure.