Steady-flow heat transfer radiator and motorcycle

Abstract

A spiral blade surrounds a central shaft in a spiral shape, and the outer edge of the spiral blade is attached to the inner side wall of a water inlet chamber to form a relatively closed spiral flow channel, so that a cooling liquid medium entering the water inlet chamber flows along the spiral flow channel; the flow of a cooling liquid medium can be adjusted to be uniformly distributed in the heat dissipation unit, so that a uniform heat exchange effect is realized; the heat dissipation unit is composed of a plurality of heat exchange pipe sets which are transversely arranged in parallel, each heat exchange pipe set is formed by spirally winding a plurality of heat exchange branch pipes into a whole, it is guaranteed that each heat exchange branch pipe can exchange heat evenly, cooling liquid media in the pipes rotate continuously, the mixing capacity and the diffusion capacity of the cooling liquid media are enhanced, and the heat dissipation efficiency is improved. Momentum and energy exchange of a cooling liquid medium between the inner walls of the heat exchange branch pipes is promoted, the heat exchange capacity and the heat dissipation capacity are improved, meanwhile, the occupied space is small, and the space utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycle thermal management, and in particular to a steady-flow heat radiator and a motorcycle. Background Art

[0002] The radiator is an important component of a motorcycle engine. It effectively dissipates the large amount of heat generated by the engine during operation to maintain the normal working state of the engine. As motorcycles develop towards larger displacement and higher performance, the heat generated by the engine increases significantly, and the requirements for the radiator become higher and higher, thus promoting the development of radiator structure technology.

[0003] Existing radiators are usually composed of a water inlet chamber, a water inlet pipe, a heat exchange pipe, a heat dissipation belt, a water outlet chamber and a water outlet pipe, which realize basic heat dissipation of the engine coolant medium and meet the heat dissipation needs under normal circumstances. However, there are also many shortcomings. For example, the coolant medium in the water inlet chamber cannot enter each heat exchange tube evenly. The heat exchange tube near the water inlet entrance has a large flow rate and a concentrated heat dissipation load, while the heat exchange tube at the far end has a small flow rate and uneven heat exchange, which reduces the overall heat dissipation capacity and leads to the risk of local overheating. Multiple channels are designed inside the heat exchange tube to increase the heat dissipation area. The heat dissipation effect is improved only by increasing the number of channels, but the flow state problem of the coolant medium is not solved, resulting in unsatisfactory heat dissipation effect. In addition, the traditional structure does not fully utilize the limited space for efficient heat dissipation design, relies on simple stacking of channels or increases in volume, and has low space utilization.

[0004] Therefore, it is necessary to improve the radiator structure of the existing technology, which can not only make the coolant medium evenly distributed in the heat exchange tube group to achieve uniform heat exchange, but also promote the momentum and energy exchange of the coolant medium between the inner walls of the heat exchange tubes, improve the heat transfer performance, and ensure that each heat exchange branch pipe in the heat exchange tube group can exchange heat evenly, while reducing the occupied space and improving space utilization. Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a steady-flow heat transfer radiator and a motorcycle, which can not only evenly distribute the coolant medium in the heat exchange tube group to achieve uniform heat exchange, but also promote the momentum and energy exchange of the coolant medium between the inner walls of the heat exchange tubes, improve the heat transfer performance, and ensure that each heat exchange branch pipe in the heat exchange tube group can exchange heat evenly, while reducing the occupied space and improving space utilization.

[0006] To achieve the objectives of the invention, the present invention provides a steady-flow heat radiator, comprising a water inlet steady-flow device and a heat dissipation device, wherein the water inlet steady-flow device comprises a water inlet chamber, a central axis located in the water inlet chamber, and spiral blades distributed on the central axis, wherein the spiral blades are spirally arranged around the central axis to form a spiral flow channel, so that the coolant medium entering the water inlet chamber flows along the spiral flow channel, and the heat dissipation device comprises a plurality of heat dissipation units arranged along the length direction of the spiral flow channel, and the heat dissipation units are respectively used to receive the coolant medium from the corresponding positions of the spiral flow channel.

[0007] Furthermore, the outer edge of the spiral blade fits against the inner wall of the water inlet chamber to form a relatively closed spiral flow channel.

[0008] Furthermore, the helical pitch angle of the spiral blade is in the range of 10°-20°.

[0009] Furthermore, the distance between adjacent heat dissipation units is the same as the distance of one pitch of the spiral blade.

[0010] Furthermore, the heat dissipation unit is composed of a plurality of heat exchange tube groups arranged in parallel in a transverse direction, and each heat exchange tube group is formed by winding a plurality of heat exchange branch pipes into one body;

[0011] The heat exchange branch pipe is wound in a spiral shape, and the rise angle of the spiral winding ranges from 40° to 55°.

[0012] Furthermore, it also includes a cylindrical water outlet chamber, the inlet end of the heat dissipation unit is provided with a heat exchange inlet channel, the outlet end is provided with a heat exchange outlet channel, the water inlet chamber is provided with a number of water outlets corresponding to the number of heat dissipation units, and the water outlets of the water inlet chamber are connected to the heat exchange inlet channel;

[0013] The water outlet chamber is provided with water inlets whose number corresponds to the heat dissipation units, and the water inlets of the water outlet chamber are connected with the heat exchange outlet channel.

[0014] Furthermore, the heat exchange inlet channel is horizontally connected to all the heat exchange tube groups, and the end portion connected to the water inlet chamber is in an arc shape that is adapted to the outer circumference of the water inlet chamber;

[0015] The heat exchange outlet channel is horizontally connected to all the heat exchange tube groups, and the end portion connected to the water outlet chamber is in an arc shape that is adapted to the outer circle of the water outlet chamber.

[0016] Furthermore, a heat dissipation belt is provided between adjacent heat dissipation units.

[0017] Furthermore, it also includes a plurality of fixing sleeves, wherein the fixing sleeves are fixedly mounted on the heat dissipation units, and the heat dissipation belts are fixedly connected between adjacent fixing sleeves on adjacent heat dissipation units.

[0018] The motorcycle of the present invention comprises the steady-flow heat transfer radiator.

[0019] The beneficial effects of the present invention are as follows: a steady-flow heat transfer radiator and a motorcycle of the present invention, wherein the spiral blades are spirally wound around the central axis, and the outer edges of the spiral blades are fitted with the inner wall of the water inlet chamber to form a relatively closed spiral flow channel, so that the coolant medium entering the water inlet chamber flows along the spiral flow channel, and the flow rate of the coolant medium can be adjusted to be evenly distributed in the heat dissipation unit, thereby achieving a uniform heat exchange effect; the heat dissipation unit is composed of a plurality of heat exchange tube groups arranged in parallel laterally, and the heat exchange tube group is composed of a plurality of heat exchange branch pipes spirally wound together to ensure that each heat exchange branch pipe can exchange heat evenly, and the coolant medium in the pipe is constantly rotating, thereby enhancing the mixing ability and diffusion ability of the coolant medium, promoting the momentum and energy exchange of the coolant medium between the inner walls of the heat exchange branch pipes, improving the heat exchange capacity and heat dissipation capacity, and at the same time occupying less space, thereby improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the steady-flow heat sink of the present invention;

[0021] Figure 2 for Figure 1 longitudinal section along AA;

[0022] Figure 3 for Figure 1 longitudinal section along the BB;

[0023] Figure 4 for Figure 1 longitudinal section along CC;

[0024] Figure 5 This is a schematic diagram of the installation of the heat dissipation unit and the spiral blades;

[0025] Figure 6 This is an enlarged view of a single heat dissipation unit.

[0026] Explanation of the accompanying symbols: 1. Water inlet chamber; 101. Water outlet of the water inlet chamber; 2. Central axis; 3. Spiral blade; 4. Heat dissipation unit; 401. Heat exchange tube group; 4011. Heat exchange branch pipe; 5. Water outlet chamber; 501. Water inlet of the water outlet chamber; 6. Heat exchange inlet channel; 601. The end of the heat exchange inlet channel connected to the water inlet chamber is in an arc shape that is adapted to the outer circle of the water inlet chamber; 7. Heat exchange outlet channel; 701. The end of the heat exchange outlet channel connected to the water outlet chamber is in an arc shape that is adapted to the outer circle of the water outlet chamber; 8. Heat dissipation belt; 9. Fixed sleeve; 10. Water inlet pipe; 11. Water outlet pipe. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-6 The present invention is described in further detail.

[0028] The embodiment of the present invention discloses a steady-flow heat radiator, including a water inlet steady-flow device and a heat dissipation device, wherein the water inlet steady-flow device includes a water inlet chamber 1, a central axis 2 located in the water inlet chamber 1, and spiral blades 3 distributed on the central axis 2, wherein the spiral blades 3 are spirally wound around the central axis 2 to form a spiral flow channel, so that the coolant medium entering the water inlet chamber 1 flows along the spiral flow channel, and the heat dissipation device includes a plurality of heat dissipation units 4 arranged along the length direction of the spiral flow channel, wherein the heat dissipation units 4 are respectively used to receive the coolant medium from the corresponding position of the spiral flow channel, and the spiral blades 3 are spirally wound around the central axis 2 to form a spiral flow channel. The swirl channel can convert the coolant medium entering the water inlet chamber 1 into a stable spiral flow through the action of centrifugal force, reducing the pressure fluctuation caused by the impact of the coolant medium and avoiding the local overheating problem caused by the uneven flow rate of the traditional straight-in flow channel; the guiding effect of the spiral flow channel can make the coolant medium form a regular rotational motion in the water inlet chamber 1, ensuring that the flow rate flowing through each heat dissipation unit 4 is uniform; the spiral flow will generate a secondary circulation in the spiral flow channel, causing the coolant medium to mix more violently with the wall surface of the spiral flow channel and the surface of the spiral blade 3, destroying the laminar boundary layer near the wall and improving the heat transfer coefficient The combination of the central axis 2 and the spiral blades 3 forms a built-in turbulent structure, which can increase the turbulence intensity of the coolant medium and avoid the problem of low heat transfer efficiency under laminar flow state; the axial temperature uniformity of the spiral flow channel can balance the load of each heat dissipation unit 4, avoid the disadvantages of overheating in the first section and inefficiency in the last section of the traditional centralized radiator, and improve the overall heat dissipation efficiency; the three-dimensional layout of the spiral flow channel can greatly increase the flow channel length in a limited space. Compared with the traditional straight flow channel, the heat dissipation area is increased under the same volume, realizing a compact design; the inertial damping effect of the spiral flow channel can also effectively suppress The impact of the coolant medium under working conditions such as system start-up and shutdown, sudden load changes, etc. enables the radiator to maintain stable heat transfer during dynamic operation. The stable spiral flow can reduce the pressure loss of the coolant medium when passing through the water inlet chamber 1, and reduce the energy consumption of the circulation pump; the heat dissipation unit 4 is arranged along the length direction of the spiral flow channel, that is, arranged in the vertical direction, to achieve a high-density heat dissipation layout in a limited space, realize a compact and integrated design, and also has the characteristics of improving the flow distribution of the coolant medium and suppressing flow noise and vibration; as shown in the figure, the water inlet chamber 1 introduces the coolant medium to the external equipment through the water inlet pipe 10, which will not be repeated here.

[0029] In this embodiment, the outer edge of the spiral blade 3 is fitted with the inner wall of the water inlet chamber 1 to form a relatively closed spiral flow channel. As shown in the figure, the spiral blade 3 is a single-head spiral blade, which is formed by a spiral line rotating around the axis, and the blades are evenly distributed along the axial direction, which will not be repeated here; the outer edge of the spiral blade 3 is fitted with the inner wall of the water inlet chamber 1 and is fixed by welding to form a relatively closed spiral flow channel, that is, a very small part of the unclosed section of the spiral flow channel does not affect the flow of the coolant medium along the spiral flow channel, which will not be repeated here; due to the outer edge direction of the spiral blade 3, And it fits with the inner wall of the water inlet chamber 1, so the water inlet chamber 1 is a cylindrical structure, which will not be described in detail here; this design allows the spiral flow channel to form a physically closed boundary, ensuring that the coolant medium flows along the spiral trajectory, avoiding side flow leakage caused by the flow channel gap in the traditional non-fitting structure, reducing the leakage amount, and reducing the raw material cost; the relatively closed spiral flow channel allows the coolant medium to follow a single spiral path, thereby improving the uniformity of the coolant medium distribution, and the fixed cross-sectional area of ​​the relatively closed spiral flow channel can accurately control the axial propulsion speed of the coolant medium through the pitch and thickness of the spiral blade 3. The circumferential rotation strength also avoids the throttling effect at the gap, such as the sudden change in pressure drop when the fluid passes through a narrow gap in the non-fitting structure, making the pressure gradient in the entire spiral flow channel more uniform and reducing the pressure loss; this design also allows the outer edge of the spiral blade 3 to form a continuous heat transfer interface with the inner wall of the water inlet chamber 1, and the coolant medium is in contact with the central axis 2, the spiral blade 3 and the inner wall of the water inlet chamber 1 at the same time during the spiral flow, thereby increasing the heat transfer area; the continuous fitting of the outer edge of the spiral blade 3 and the inner wall of the water inlet chamber 1 can maintain a stable laminar bottom layer thickness, reducing The boundary layer separation caused by sudden changes in the flow channel is reduced, the flow resistance is reduced, and the risk of dirt adhesion is reduced; at the same time, the outer edge of the spiral blade 3 is fitted with the inner wall of the water inlet chamber 1 to form a rigid support structure, which prevents the spiral blade 3 from being deformed or vibrated due to the impact of the coolant medium, improves the overall structural reliability, and extends the service life of the radiator; the relatively closed spiral flow channel can realize long-flow heat transfer in an extremely small radial space. Compared with the traditional straight pipe flow channel, the heat transfer path length can be increased by 3-5 times under the same volume, realizing a compact design and improving space utilization.

[0030] In this embodiment, the spiral pitch angle range of the spiral blade 3 is 10°-20°. When the spiral pitch angle of the spiral blade 3 is less than 10°, the spiral trajectory tends to be a gentle spiral, and the circumferential rotation component of the coolant medium accounts for a high proportion. Although it can enhance the turbulence effect, the axial propulsion efficiency is low. When the spiral pitch angle of the spiral blade 3 is greater than 20°, the spiral trajectory tends to rise steeply, the axial speed dominates, the flow resistance is reduced, but the turbulence intensity decreases. Preferably, the spiral pitch angle range of the spiral blade 3 of this embodiment is 10°-20°, which can achieve a balance between strong heat transfer and low resistance flow, which will not be repeated here; the spiral pitch angle range can enable the coolant medium to have both effective axial propulsion capability and moderate rotational disturbance, forming a composite flow pattern of spiral advancement and circumferential stirring, circumferential rotation It can destroy the laminar bottom layer near the inner wall of the water inlet chamber 1, reduce the thickness of the thermal boundary layer, improve the heat transfer coefficient, and axial propulsion ensures that the coolant medium completes heat exchange within a reasonable time, avoiding retention overheating caused by excessive rotation. At the same time, compared with the straight tube, this design maximizes the heat transfer per unit length; when the spiral blade 3 is prepared by CNC milling or 3D printing in the existing technology, the tool wear rate is reduced compared to an acute angle of less than 10° or a steep angle of more than 20°. During injection molding, the spiral lead angle range can make the mold draft angle match the standard process, avoiding deformation of plastic parts caused by too steep an angle; a moderate spiral lead angle causes the coolant medium to produce periodic centrifugal force fluctuations during flow, which can effectively peel off the dirt particles initially deposited on the inner wall of the water inlet chamber 1, reducing maintenance costs.

[0031] In this embodiment, the distance between adjacent heat dissipation units 4 is the same as the distance of one pitch of the spiral blade 3. The pitch of the spiral blade 3, that is, the axial spacing between adjacent spiral blades 3, determines the periodic flow unit length of the coolant medium along the spiral trajectory. When the spacing between adjacent heat dissipation units 4 is equal to the distance of one pitch of the spiral blade 3, each heat dissipation unit 4 corresponds to an independent flow cycle of the spiral flow channel, which reduces the volume flow error of the coolant medium received by each heat dissipation unit 4. It can be tested by the electromagnetic flowmeter in the prior art to avoid local overheating or overcooling caused by uneven flow, which will not be repeated here; the pressure in the spiral flow channel fluctuates periodically along the axial direction. When the distance between adjacent heat dissipation units 4 is the same as the distance of one pitch of the spiral blade 3 4 , so the turbulence intensity of the spiral blade 3 is periodically restored due to the disturbance of the spiral blade 3 every time the coolant medium passes through a pitch, ensuring that the coolant medium at the inlet of the heat dissipation unit 4 is always in a high turbulence state, thus avoiding the decrease in heat transfer efficiency due to turbulence attenuation; the pitch of the spiral blade 3 is used as the basic geometric parameter of the spiral flow channel, and after being bound to the distance between adjacent heat dissipation units 4, the standardized production of the heat dissipation unit 4 is realized, and the versatility of the mold is improved. The CNC machining benchmarks of the spiral blade 3 and the installation position of the heat dissipation unit 4 are unified, which reduces machining errors and improves assembly efficiency.

[0032] In this embodiment, the heat dissipation unit 4 is composed of a plurality of heat exchange tube groups 401 arranged in parallel laterally, and each heat exchange tube group 401 is wound into a whole by a plurality of heat exchange branch pipes 4011. Each heat exchange tube group 401 is wound into a whole by a plurality of heat exchange branch pipes 4011, forming a dense spiral or winding structure, which significantly increases the contact area between the coolant medium and the air or / and medium. The winding structure can increase the heat exchange area per unit volume. Compared with the traditional straight tube heat dissipation structure, the heat transfer efficiency is higher under the same space. The wound heat exchange branch pipes 4011 complicate the flow path of the coolant medium, destroy the boundary layer, enhance the turbulence of the fluid, reduce thermal resistance, and increase the convective heat transfer coefficient due to turbulent flow, thereby accelerating heat transfer; multiple heat exchange tube groups 401 are arranged in parallel laterally, that is, distributed along the width direction of the radiator, so that the coolant medium from the spiral flow channel is evenly diverted to each heat exchange tube group 401, avoiding the problem of uneven heat dissipation caused by excessive or insufficient local flow. The layout of the heat exchange tube group 401 matches the pitch of the spiral flow channel, which can further ensure that the coolant medium flow received by each heat dissipation unit 4 is consistent and the temperature difference is small, thereby avoiding overheating of the upstream unit and insufficient load of the downstream unit; the wound heat exchange branch pipe 4011 realizes a multi-level and multi-path heat exchange network in a limited space through a three-dimensional layout, reducing the overall volume and achieving a compact and highly integrated design. The heat dissipation unit 4 can be regarded as an independent module. When a single module is damaged, there is no need to replace it as a whole, thereby reducing maintenance costs; at the same time, the heat dissipation power can be flexibly adjusted by increasing or decreasing the number of modules to adapt to different heat load requirements; several heat exchange branch pipes 4011 are wound into one to form a rigid structure, which reduces the vibration and noise caused by the impact of the coolant medium. Compared with the loosely arranged single-tube structure, the winding design can reduce the vibration amplitude of the pipeline. The integrated winding structure reduces the number of pipeline interfaces, reduces the probability of coolant leakage due to loose interfaces, and improves system reliability;

[0033] The heat exchange branch pipe 4011 is wound in a spiral shape, and the rise angle of the spiral winding is in the range of 40°-55°. The spiral rise angle refers to the angle between the tangent line of the spiral line of the heat exchange branch pipe 4011 and the axial direction. Its size directly determines the axial propulsion speed and radial disturbance intensity of the coolant medium along the spiral path. The set interval is the optimal balance point between heat transfer efficiency and flow resistance, which usually corresponds to the working condition where turbulence is fully developed and pressure loss is controllable. When the coolant medium flows along the spiral path, secondary flow is generated by the centrifugal force. When the rise angle of the spiral winding is in the range of 40°-55°, the secondary flow intensity is moderate, which can effectively destroy the fluid boundary layer. The thickness of the thermal boundary layer is reduced by about 20%-35%. Specifically, when the spiral winding lead angle of the heat exchange branch pipe 4011 in this embodiment is 45°, the thinning range of the thermal boundary layer thickness is optimal, which will not be repeated here; thereby enhancing the heat exchange between the wall and the coolant medium; the spiral path increases the actual flow distance of the coolant medium in the heat exchange branch pipe 4011, and extends the residence time of the coolant medium; when the spiral winding lead angle exceeds 55°, the centrifugal force dominates the flow, and the radial velocity component of the coolant medium is too large, causing eddy separation and local high-pressure areas. A reasonable lead angle design allows the coolant medium to transition smoothly, avoiding impact noise caused by sharp bends. This setting method also has the characteristics of improving the overall compactness of the radiator, which will not be repeated here.

[0034] In this embodiment, a cylindrical water outlet chamber 5 is further included. The inlet end of the heat dissipation unit 4 is provided with a heat exchange inlet channel 6, and the outlet end is provided with a heat exchange outlet channel 7. The water inlet chamber 1 is provided with water outlets 101 of the water inlet chamber corresponding to the number of the heat dissipation units 4, and is connected to the heat exchange inlet channel 6 through the water outlet 101 of the water inlet chamber. Each heat dissipation unit 4 is connected one-to-one with the water outlet 101 of the water inlet chamber through the heat exchange inlet channel 6 to form an independent fluid circuit. The heat dissipation unit 4 can be independently disassembled, maintained or replaced without stopping the entire system for inspection, thereby improving maintenance efficiency, facilitating standardized production, and reducing manufacturing and assembly costs. By increasing or decreasing the number of heat dissipation units 4, the total heat dissipation of the radiator can be flexibly adjusted to meet the heat dissipation requirements of equipment with different power. The water outlets 101 of the water inlet chamber correspond one-to-one to the heat dissipation units 4. And the channel structure is symmetrical, which can ensure that the coolant medium flow and pressure of each heat dissipation unit 4 are evenly distributed, avoiding problems such as coolant medium deviation; the coolant medium directly enters the heat exchange inlet channel 6 from the water inlet chamber 1, and the cross-sectional area of ​​the water outlet 101 of the water inlet chamber can also shrink or expand, causing local turbulence, enhancing the convective heat exchange between the coolant medium and the inner wall of the heat dissipation unit 4, and improving the heat transfer coefficient; the independent design of the heat dissipation unit 4 can limit the leakage risk of a single heat dissipation unit 4 to a local area, avoid the leakage from spreading to the entire device, and improve the safety of the device. The water inlet chamber 1 serves as a common coolant medium chamber, which can buffer the pressure fluctuations of the coolant medium when it starts and stops, reduce the impact on the heat exchange inlet channel 6, and extend the life of the radiator; as shown in the figure, the water outlet chamber 5 discharges the coolant medium to the outside through the water outlet pipe 11, which will not be repeated here;

[0035] The water outlet chamber 5 is provided with water inlets 501 corresponding to the number of the heat dissipation units 4, and is connected to the heat exchange outlet channel 7 through the water inlet 501 of the water outlet chamber. The heat exchange outlet channel 7 of each heat dissipation unit 4 corresponds one-to-one to the water inlet 501 of the water outlet chamber, forming an independent coolant medium outlet path, avoiding turbulent impact or backflow interference of the coolant medium of different units inside the water outlet chamber 5, and the short straight channel connection can reduce the local resistance loss of the coolant medium such as bends, contractions and expansions; a filtering device, such as a filter, can also be set at the water inlet 501 of the water outlet chamber, which can intercept impurities for the coolant medium of a single heat dissipation unit 4, prevent foreign matter from accumulating inside the water outlet chamber 5 and clogging other unit channels, and improve the system's anti-pollution ability; the water outlet chamber 5 adopts a cylindrical structure and the water inlet 501 of the water outlet chamber is evenly distributed along the axial direction, shortening the radial space inside the radiator and realizing a compact layout.

[0036] In this embodiment, the heat exchange inlet channel 6 is connected to all the heat exchange tube groups 401 in the horizontal direction, and the end connected to the water inlet chamber 1 is an arc 601 adapted to the outer circle of the water inlet chamber 1. The end of the heat exchange inlet channel 6 connected to the water inlet chamber 1 adopts an arc 601 adapted to the outer circle of the water inlet chamber 1, so that the flow direction of the coolant medium from the water inlet chamber 1 into the heat exchange inlet channel 6 is smoother, reducing eddy current and impact loss. The heat exchange inlet channel 6 is connected to all the heat exchange tube groups 401 in the horizontal direction, forming a structure similar to a diversion, and the cross-sectional area of ​​the heat exchange inlet channel 6 gradually decreases along the flow direction, so that the coolant medium is evenly distributed to each heat exchange tube group 401; the arc 601 part is connected to the water inlet chamber 1 outer circle is tangent or smoothly transitioned to avoid stress concentration caused by right-angle connection. The heat exchange inlet channel 6 is an independent component and can be pre-integrated with the heat exchange tube group 401 before assembly to form a standardized component. It can then be quickly connected to the water inlet chamber 1 through the arc-shaped interface 601, such as flange connection or welding, to reduce on-site installation errors. The arc-shaped design without dead angles and the through-type structure reduce the risk of coolant medium being retained in the heat exchange inlet channel 6, reduce impurity deposition or medium scaling, and improve anti-pollution ability. The heat exchange inlet channel 6 can also be connected to a backwash pipeline, such as by reversely introducing high-pressure water from the heat exchange tube group 401, and utilizing the smooth inner wall of the arc-shaped interface 601 to achieve efficient cleaning without disassembling the entire water inlet chamber 1, thereby reducing maintenance costs.

[0037] The heat exchange outlet channel 7 is connected to all the heat exchange tube groups 401 in the horizontal direction, and the end connected to the water outlet chamber 5 is in an arc shape 701 adapted to the outer circle of the water outlet chamber 5. The end of the heat exchange outlet channel 7 connected to the water outlet chamber 5 adopts an arc shape 701 adapted to the outer circle of the water outlet chamber 5, so that the coolant medium flowing out of each heat exchange tube group 401 forms a centripetal convergent flow when it converges into the water outlet chamber 5, and the flow direction is consistent with the curvature of the wall of the water outlet chamber 5, reducing turbulent disturbances and pressure fluctuations; all heat exchange tube groups 401 are connected to the water outlet chamber 5 through the heat exchange outlet channel 7 to form an isobaric convergent chamber. Even if there are differences in the flow resistance of each heat exchange tube group 401, such as due to dirt or installation, The heat exchange outlet channel 7 can also achieve automatic flow balance through pressure conduction to avoid stagnation in individual heat exchange tube groups 401 due to flow resistance difference caused by assembly errors; the curved contour of the arc 701 can produce a momentum buffering effect on the high-speed coolant medium, thereby improving the stability of the radiator operation; the smooth connection between the arc 701 and the outer circle of the water outlet chamber 5 can eliminate the stress concentration risk of the right-angle weld and extend the service life of the radiator; the geometric shape of the arc 701 matches the water inlet 501 of the water outlet chamber to achieve gapless sealing, avoid the leakage risk of the right-angle interface due to assembly deviation, and also has the characteristics of compact layout, easy disassembly and maintenance, etc., which will not be repeated here.

[0038] In this embodiment, a heat dissipation belt 8 is further provided between adjacent heat dissipation units 4. The heat dissipation belt 8 is usually an aluminum or copper alloy sheet and is usually installed in the gap between adjacent heat dissipation units 4. The coolant medium in the heat dissipation unit 4 transfers heat to the heat dissipation belt 8 through the tube wall (metal heat conduction) of the heat exchange tube group 401 of the heat dissipation unit 4. The heat dissipation belt 8 strengthens the convection heat exchange between the air and the coolant medium by increasing the surface area; the heat dissipation belt 8 can adopt a corrugated, toothed or louvered structure in the prior art, so that the air generates vortexes and velocity gradients when flowing through the gap between the adjacent heat dissipation units 4, thereby destroying the surface area of ​​the heat exchange tube group 401 of the heat dissipation unit 4. The laminar boundary layer of the surface; the heat dissipation belt 8 can also serve as a transverse supporting element to connect the adjacent heat dissipation units 4 into an integral frame to form a rigid support structure to withstand mechanical vibration and pressure loads. When the heat dissipation unit 4 is subjected to external impact, such as when hit by a foreign object, the grid-like distribution of the heat dissipation belt 8 can disperse the impact force to multiple heat dissipation units 4, avoiding single point failure and improving the radiator's ability to resist impact deformation; the heat dissipation belt 8 and the heat dissipation unit 4 are generally detachably connected through a supporting component, such as a buckle or bolt fixation, which is convenient for replacing damaged parts separately and reducing maintenance costs. At the same time, the inclined or corrugated structure of the heat dissipation belt 8 can achieve self-cleaning by air flushing, which will not be repeated here.

[0039] In this embodiment, it also includes several fixing sleeves 9, which are fixedly mounted on the heat dissipation unit 4, and the heat dissipation belt 8 is fixedly connected between adjacent fixing sleeves 9 on adjacent heat dissipation units 4. The fixing sleeves 9 tightly fix the heat dissipation belt 8 between adjacent heat dissipation units 4 to avoid fluid flow, such as high-speed airflow causing vibration, deviation or falling of the heat dissipation belt 8, thereby ensuring the structural reliability of the heat dissipation belt 8 during long-term operation. As shown in the figure, the fixing sleeves 9 are evenly distributed near the front end, middle section and rear end of the heat exchange tube group, and can disperse external loads, such as vibration or pressure, to all heat dissipation units 4, reduce local stress concentration, and extend the service life of the radiator; the fixing sleeves 9 can adopt mechanical connections in the existing technology, such as snaps, bolts or welding, to make the heat dissipation belt 8 in close contact with the surface of the adjacent heat dissipation unit 4, reduce contact thermal resistance, and improve the efficiency of heat conduction from the heat dissipation unit 4 to the heat dissipation belt 8; the effective heat dissipation of the heat dissipation belt 8 depends on the convection of a specific geometric shape The fixing sleeve 9 can maintain the original shape of the heat dissipation belt 8, avoid its deformation due to external force and reduce the disturbance effect, strengthen the convective heat exchange between the fluid and the surface of the heat dissipation belt 8, and the fixed heat dissipation belt 8 can be used as a guide structure to make the fluid, such as air, flow through the heat dissipation unit 4 more evenly, reduce the flow dead zone, and improve the overall heat dissipation uniformity; the fixing sleeve 9 can realize the modular pre-assembly of the heat dissipation belt 8 and the heat dissipation unit 4, simplify the overall assembly process of the heat exchanger, improve production efficiency, and can also adopt a detachable connection to facilitate the replacement of damaged heat dissipation belt 8 or heat dissipation unit 4 separately during later maintenance, thereby reducing maintenance costs; usually in the heat dissipation process of the motorcycle engine, the fixing sleeve 9 can enhance the structural rigidity, prevent the heat dissipation belt 8 and the heat dissipation unit 4 from wear or fatigue fracture caused by relative movement, and the fixing sleeve 9 can also be made of temperature-resistant and corrosion-resistant materials, such as stainless steel or aluminum alloy, and can also adapt to high temperature, high humidity or corrosive environment, to ensure that the radiator can operate stably for a long time.

[0040] The motorcycle of this embodiment includes the above-mentioned steady-flow heat dissipation radiator, wherein the spiral blades 3 are spirally wound around the central axis 2, and the outer edges of the spiral blades 3 are in contact with the inner wall of the water inlet chamber 1 to form a relatively closed spiral flow channel, so that the coolant medium entering the water inlet chamber 1 flows along the spiral flow channel, and the flow rate of the coolant medium can be adjusted to be evenly distributed in the heat dissipation unit 4, thereby achieving a uniform heat exchange effect; the heat dissipation unit 4 is composed of a plurality of heat exchange tube groups 401 arranged in parallel laterally, and the heat exchange tube group 401 is composed of a plurality of heat exchange branch pipes 4011 spirally wound together to ensure that each heat exchange branch pipe 4011 can exchange heat evenly, and the coolant medium in the pipe is constantly rotating, thereby enhancing the mixing ability and diffusion ability of the coolant medium, promoting the momentum and energy exchange of the coolant medium between the inner walls of the heat exchange branch pipe 4011, improving the heat exchange capacity and heat dissipation capacity, and at the same time occupying less space, thereby improving space utilization.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A steady-flow heat sink, characterized by: It includes a water inlet flow stabilizing device and a heat dissipation device. The water inlet flow stabilizing device includes a water inlet chamber, a central axis located in the water inlet chamber and spiral blades distributed on the central axis. The spiral blades spirally surround the central axis to form a spiral flow channel, so that the coolant medium entering the water inlet chamber flows along the spiral flow channel. The heat dissipation device includes a plurality of heat dissipation units arranged along the length direction of the spiral flow channel, and the heat dissipation units are respectively used to receive the coolant medium from the corresponding positions of the spiral flow channel.

2. The steady-flow heat sink according to claim 1, characterized in that: The outer edge of the spiral blade fits into the inner wall of the water inlet chamber to form a relatively closed spiral flow channel.

3. The steady-flow heat sink according to claim 2, characterized in that: The helical pitch angle of the spiral blade is in the range of 10°-20°.

4. The steady-flow heat sink according to claim 1, characterized in that: The distance between adjacent heat dissipation units is the same as the distance of one pitch of the spiral blade.

5. The steady-flow heat sink according to claim 4, characterized in that: The heat dissipation unit is composed of a plurality of heat exchange tube groups arranged in parallel in a transverse direction, and each heat exchange tube group is formed by winding a plurality of heat exchange branch pipes into one body; The heat exchange branch pipe is wound in a spiral shape, and the rise angle of the spiral winding ranges from 40° to 55°.

6. The steady-flow heat sink according to claim 1, characterized in that: It also includes a cylindrical water outlet chamber, the inlet end of the heat dissipation unit is provided with a heat exchange inlet channel, the outlet end is provided with a heat exchange outlet channel, the water inlet chamber is provided with a number of water outlets corresponding to the number of heat dissipation units, and the water outlets of the water inlet chamber are connected to the heat exchange inlet channel; The water outlet chamber is provided with water inlets whose number corresponds to the heat dissipation units, and the water inlets of the water outlet chamber are connected with the heat exchange outlet channel.

7. The steady-flow heat sink according to claim 6, characterized in that: The heat exchange inlet channel is horizontally connected to all the heat exchange tube groups, and the end portion connected to the water inlet chamber is in an arc shape adapted to the outer circle of the water inlet chamber; The heat exchange outlet channel is horizontally connected to all the heat exchange tube groups, and the end portion connected to the water outlet chamber is in an arc shape that is adapted to the outer circle of the water outlet chamber.

8. The steady-flow heat sink according to claim 4, characterized in that: A heat dissipation belt is further provided between adjacent heat dissipation units.

9. The steady-flow heat sink according to claim 8, characterized in that: It also includes a plurality of fixing sleeves, which are fixedly mounted on the heat dissipation units, and the heat dissipation belts are fixedly connected between adjacent fixing sleeves on adjacent heat dissipation units.

10. A motorcycle, characterized in that: The invention comprises the steady-flow heat transfer radiator according to any one of claims 1 to 9.

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