Heat exchange device

Abstract

The invention discloses a heat exchange device which comprises a heat exchange base body, at least one side of the heat exchange base body is provided with a heating surface, a cooling channel capable of conducting heat with the heating surface is arranged in the heat exchange base body, and at least one section of channel in the cooling channel is a vortex channel; a spiral blade extending in the extending direction of the vortex channel is arranged in the vortex channel so that fluid can flow in a spiral mode. In the using process, due to the existence of the spiral blades, fluid rotates and advances in the flow channel, and the fluid can damage a boundary layer around the flow channel in the rotating process, so that the heat exchange capacity higher than that of a traditional structure is obtained, the heat exchange base body can be applied to occasions with higher heat flow density, and the heat exchange efficiency is improved. The heat exchange device can effectively solve the problem that an existing heat exchange device is poor in heat exchange effect.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange technology, and more specifically, to a heat exchange device. Background Art

[0002] The serpentine flow channel heat exchange matrix is ​​a common heat exchange matrix structure at present. The heat exchange area of ​​the heat exchange matrix can be fully utilized through the design of the "J"-shaped flow channel. However, with the development of technology, the heat flux density of electronic components is getting higher and higher, and ordinary flow channels cannot meet the heat dissipation requirements. Engineers began to add various contents inside the flow channel, including fins, cylindrical arrays, etc. These structures can effectively increase the heat exchange area and increase the fluid disturbance to a certain extent, thereby improving the heat transfer coefficient.

[0003] In the process of realizing the invention, the inventors found that there are at least the following problems in the prior art: although structures such as fins and cylindrical arrays can also enhance heat exchange, they have little disturbance on the fluid and can only change the speed of the fluid parallel to the upper and lower surfaces of the heat exchange substrate, that is, they can only enhance the heat exchange on the extended surface and the two sides of the flow channel, and have basically no significant enhancing effect on the heat exchange on the bottom surface of the heat exchange substrate with a higher temperature. Therefore, its heat exchange capacity needs to be further improved. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a heat exchange device, which can effectively solve the problem of poor heat exchange effect of current heat exchange devices.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A heat exchange device comprises a heat exchange substrate, wherein at least one side of the heat exchange substrate has a heating surface, and the heat exchange substrate has a cooling channel capable of conducting heat with the heating surface, wherein at least one section of the cooling channel is a vortex channel; and the vortex channel is provided with spiral blades extending along the extension direction of the vortex channel so that the fluid flows in a spiral.

[0007] In some embodiments, in the above heat exchange device, when in use, due to the presence of the spiral blades, the fluid rotates and moves forward inside the flow channel, and the fluid can destroy the boundary layer around the flow channel during the rotation process, thereby obtaining a stronger heat exchange capacity than the traditional structure, so that the heat exchange matrix can be used in occasions with higher heat flux density. In summary, in the above heat exchange device, spiral blades are added to the cooling channel, which can realize the rotation and movement of the internal fluid, so that the internal fluid and the channel wall of the cooling channel can fully exchange heat, thereby improving the heat exchange efficiency. In summary, the heat exchange device can effectively solve the problem of poor heat exchange effect of the current heat exchange device.

[0008] In some technical solutions, a spiral structure is included, wherein the spiral structure includes a central rod and the spiral blades, wherein the spiral blades are spirally arranged around the central rod, and the spiral blades and the central rod are integrally formed.

[0009] In some technical solutions, the cooling channel is a serpentine channel, the serpentine channel includes a straight channel, and the straight channel is the vortex channel.

[0010] In some technical schemes, the heat exchange substrate includes a cold plate and a connecting joint, the cold plate is provided with a channel hole extending to the side, the spiral blade can be inserted into the channel hole from the orifice end of at least one end of the channel hole to combine to form the vortex channel; the connecting joint is sealed and connected to at least one of the orifice ends, and the connecting channel of the connecting joint is connected to the channel hole.

[0011] In some technical solutions, the heat exchange substrate also includes a connecting member, in which a connecting channel is formed; a plurality of channel holes arranged in parallel are opened on the cold plate; and the plurality of ports intersecting the connecting channel are respectively connected to the ports of the corresponding channel holes through the connecting joint.

[0012] In some technical schemes, the connecting piece is a U-shaped tube, and the tube cavity of the U-shaped tube is the connecting channel; each of the channel holes on the cold plate is provided with the spiral blade; each of the channel holes is arranged in a straight line through the cold plate, and the connecting joints are provided at both ends; in the extension direction of the channel hole, the U-shaped tube is provided on both sides of the cold plate to connect each of the channel holes in series in sequence; and the connecting joint connected to one end of at least one of the channel holes is an external liquid inlet joint; the connecting joint connected to one end of at least one of the channel holes is an external liquid outlet joint.

[0013] In some technical solutions, the plate surface on one side of the cold plate along the thickness direction is a heating surface; and the center line of at least one of the eddy current channels is inclined relative to the heating surface.

[0014] In some technical schemes, the heat exchange base includes a first plate body and a second plate body assembled with each other; the channel cavity of the cooling channel is separated into a first groove-shaped cavity and a second groove-shaped cavity along the cross-section, the first groove-shaped cavity is located in the first plate body, and the second groove-shaped cavity is located in the second plate body, and the spiral blade can be placed in the first groove-shaped cavity from the groove on one side and placed in the second groove-shaped cavity from the groove on the other side.

[0015] In some technical solutions, the cooling channel includes a plurality of parallel straight channel segments, and each of the straight channel segments is provided with a spiral blade.

[0016] In some technical solutions, the spiral blade is a single helical structure or a double helical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a local structure of a heat exchange device provided by an embodiment of the present invention after a cold plate is partially removed to expose the interior of a cooling channel;

[0019] Figure 2 A schematic cross-sectional structure diagram of a heat exchange device provided in an embodiment of the present invention;

[0020] Figure 3 A schematic cross-sectional view of a heat exchange device with downwardly inclined channel holes provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the explosion structure of another heat exchange device provided in an embodiment of the present invention.

[0022] The following are marked in the accompanying drawings:

[0023] Heat exchange matrix 1, spiral structure 2;

[0024] Heating surface 13, cooling channel 14, vortex channel 14-1, external liquid inlet connector 15, external liquid outlet connector 16;

[0025] Cold plate 11-1, connecting joint 11-2, connecting piece 11-3, channel hole 11-4, orifice end 11-5;

[0026] A first plate body 12-1, a second plate body 12-2, a first groove-shaped cavity 12-3, a second groove-shaped cavity 12-4, and a notch 12-5;

[0027] Spiral blades 21 and a central rod 22. DETAILED DESCRIPTION

[0028] The embodiment of the present invention discloses a heat exchange device to effectively solve the problem that the heat exchange effect of the current heat exchange device is poor.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 4 , Figure 1 A schematic diagram of a local structure of a heat exchange device provided by an embodiment of the present invention after a cold plate is partially removed to expose the interior of a cooling channel; Figure 2 A schematic cross-sectional structure diagram of a heat exchange device provided in an embodiment of the present invention; Figure 3 A schematic cross-sectional view of a heat exchange device with downwardly inclined channel holes provided in an embodiment of the present invention; Figure 4 A schematic diagram of the explosion structure of another heat exchange device provided in an embodiment of the present invention.

[0031] In some embodiments, a heat exchange device is provided, such as a liquid cooling plate device. When a spiral blade 21 is provided, it can also be called a cyclone liquid cooling plate device.

[0032] In some embodiments, a heat exchange device is provided that mainly includes a heat exchange substrate 1, and at least one side of the heat exchange substrate 1 is a heating surface 13. When the heat exchange substrate 1 is a plate structure or the main body of the heat exchange substrate 1 is a plate structure, one side of the plate surface is the heating surface 13, and of course, both sides of the plate surface can also be the heating surface 13. The plate surface refers to the side surfaces on both sides of the plate structure in the thickness direction.

[0033] In some embodiments, a cooling channel is provided in the heat exchange matrix 1 to circulate a heat exchange fluid, and the cooling channel can conduct heat with the heating surface 13, so that the heat of the heating surface 13 can be transferred to the heat exchange fluid in the cooling channel, generally through the cooling channel wall and / or the heat conducting structure on the cooling channel wall, the heat is transferred to the heat exchange fluid. Of course, the heat can also be transferred in the reverse direction.

[0034] In some embodiments, at least one section of the cooling channel 14 is a vortex channel 14-1, or the entire section may be a vortex channel 14-1. The vortex channel 14-1 refers to a channel section in which a spiral blade 21 extending along the extension direction of the channel is provided in the channel, and the function of the spiral blade 21 is to make the fluid flow in a spiral. The extension line of the vortex channel 14-1 can be a straight line or a curve, that is, it can be a straight channel or a curved channel. The cross-section of the vortex channel 14-1 can be circular, square or other shapes. The spiral blade 21 can be integrally formed with the channel wall, or it can be assembled into the channel later. It should be noted that the spiral blade 21 means that the blade runs in a spiral direction, that is, the extension direction is spiral, and the side of the blade thickness direction has a drainage effect, such as forming a spiral groove. One side of the blade width direction is close to the spiral center line, and the other side is far away from the spiral center line. The width direction can also be understood as the extension direction perpendicular to the axis of the spiral.

[0035] In some embodiments, in the above heat exchange device, when in use, due to the presence of the spiral blades 21, the fluid rotates and moves forward inside the flow channel, and the fluid can destroy the boundary layer around the flow channel during the rotation process, thereby obtaining a stronger heat exchange capacity than the traditional structure, so that the heat exchange matrix 1 can be used in occasions with higher heat flux density. In summary, in the above heat exchange device, the spiral blades 21 are added to the cooling channel 14, which can realize the rotation and advancement of the internal fluid, so that the internal fluid and the channel wall of the cooling channel 14 can fully exchange heat, thereby improving the heat exchange efficiency. In summary, the heat exchange device can effectively solve the problem of poor heat exchange effect of the current heat exchange device.

[0036] In some embodiments, the spiral blade 21 and the channel wall are connected by integral molding or welding. In this case, the molding method can be achieved by boring with a boring tool. It is also possible to separate the cooling channel 14 into multiple groove structures, each groove structure is located in a different structural member, and when the groove structure is formed on the structural member, the corresponding structure of the spiral blade 21 opened is formed. When the cooling channel 14 is formed by combining the various structural members, the corresponding structures are combined to form the spiral blade 21. Of course, other manufacturing methods can also be adopted, such as 3D printing.

[0037] In some embodiments, in the heat exchange device, the spiral blades 21 and the heat exchange base 1 can be separately provided, and the spiral blades 21 can be installed in the cooling channel 14 later. The installation method is, for example, plug-in, or put into a slot structure, and then the slot structure and another structure are combined to form a cooling channel 14.

[0038] In some embodiments, the spiral blade 21 may be a single sheet structure that is bent into a spiral shape, such as a belt-shaped structure that is spirally bent to form a spiral shape. For the spiral blade 21: the thickness of the radial outer edge may be less than the thickness of the radial inner edge, and the radial inward direction may show an increasing effect, so that the radial inner edge has sufficient strength to better achieve internal support; of course, the thickness of the radial outer edge may be greater than the thickness of the radial inner edge, and the radial inward direction may show a decreasing effect, so that the radial outer edge has sufficient strength for support, and at the same time, the fluid impulse received by the radial outer position is greater, so strengthening the radial outer edge can increase the service life.

[0039] In some embodiments, a spiral structure 2 may be provided in the heat exchange device, and the spiral structure 2 includes a central rod 22 and a spiral blade 21, and the spiral blade 21 is arranged spirally around the central rod 22. And the inner edge of the spiral blade 21 can be closely connected with the central rod 22, such as fixedly connected or interference fit with each other. The spiral blade 21 and the central rod 22 can be assembled later, such as welding, interference fit, etc. It should be noted that only one spiral blade 21 can be arranged on the central rod 22, or multiple spiral blades 21 can be arranged. The spiral blade 21 can be a continuous blade or a discontinuous blade.

[0040] The spiral blade 21 and the center rod 22 are integrally formed, that is, the inner edge of the spiral blade 21 is integrally connected to the side wall of the center rod 22. The molding method can be 3D printing, mold molding, or turning molding. It is only necessary to turn a spiral groove on the rod, especially on a cylindrical rod, and the groove wall will also be spiral, that is, forming a spiral blade 21. It should be noted that the spiral blade 21 on the center rod 22 can be a single spiral blade or a double spiral blade. Specifically, it can be set as needed. Generally speaking, it is set as a single spiral blade to avoid excessive flow resistance. At the same time, the surface roughness of the spiral blade 21 needs to be controlled to reduce the flow resistance.

[0041] In order to facilitate the smooth flow of fluid and reduce flow resistance, the center rod 22 is preferably a cylindrical rod. At this time, the thickness of the radial outer edge of the spiral blade 21 can be made smaller than the thickness of the radial inner edge to ensure the connection strength between the center rod 22 and the spiral blade 21.

[0042] In some embodiments, the cooling channel 14 may include a straight channel, and in this case, the straight channel may be set as the vortex channel 14-1 to facilitate the placement of the spiral blades 21, that is, to facilitate the placement of the spiral structure 2. In this case, a straight spiral structure 2 may be used, and the manufacturing cost of the straight spiral structure 2 is significantly lower than that of the curved spiral structure 2.

[0043] The cooling channel 14 generally includes a straight channel and a curved channel, and the specific number of channels is as follows. The cooling channel 14 may include a plurality of parallel channel sections, such as a plurality of parallel straight channels, each of which is provided with the above-mentioned spiral blades 21, such as the above-mentioned spiral structures 2.

[0044] In some embodiments, the cooling channel 14 may be a serpentine channel, specifically an S-shaped channel, a meandering channel, etc. The serpentine channel may include a plurality of parallel straight-line channels, and adjacent straight-line channels are connected via arc channels to form a serpentine channel in series, such as a U-shaped channel.

[0045] The straight channel of the serpentine channel can be a vortex channel 14-1, that is, a spiral blade 21 is arranged inside. The serpentine channel can effectively extend the fluid flow path, and it is also convenient to arrange the spiral blade 21 in the straight channel.

[0046] In some embodiments, in order to facilitate the installation of the spiral blades 21, the heat exchange substrate 1 may include a cold plate 11-1 and a connecting joint 11-2, wherein the cold plate 11-1 is provided with a channel hole 11-4 extending to the side, and the spiral blade 21 can be inserted into the channel hole 11-4 from the orifice end 11-5 of a section of the channel hole 11-4 to form a vortex channel 14-1. The connecting joint 11-2 is sealedly connected with the orifice end 11-5, such as the orifice end 11-5 can be expanded to facilitate the insertion of the end of the connecting joint 11-2, and the two are threaded or welded, and a sealing structure is provided.

[0047] The connecting channel of the connecting joint 11-2 is connected to the channel hole 11-4. That is, the orifice end 11-5 of the connecting joint 11-2 is used as the inlet of the spiral blade 21 (or the spiral structure 2) to enable reuse, which effectively reduces the assembly cost when manufacturing the vortex channel 14-1. Moreover, the diameter of the connecting channel in the connecting joint 11-2 itself is set corresponding to the aperture of the channel hole 11-4, so the impact on the connecting joint 11-2 is relatively small. Even in some implementation cases, the adapter module can be integrated on the connecting joint 11-2 to achieve low-cost assembly.

[0048] It should be noted that the inner end of the connection joint 11-2 can be abutted against the spiral blade, such as against the end of the center rod 22 of the spiral structure 2, to limit the position on one side. Specifically, the inner hole end of the connection joint 11-2 can be formed into a support structure such as a grid hole cross or a cross, and the support structure can be abutted against the center rod 22 to achieve the limit.

[0049] In this case, the cooling channel 14 can be the above-mentioned serpentine channel, and the channel hole 11-4 is a straight channel located at one end, that is, used as the vortex channel 14-1. Other straight channels can be set as the above-mentioned vortex channel 14-1, or they can be other shapes of vortex channels 14-1. When the straight channel formed at the end of the cooling channel 14 is used as the vortex channel 14-1, the spiral structure 2 (or spiral blade 21) inside it can be limited at only one end, or one end can be limited by the connecting joint 11-2, and the other end can be limited by the channel wall with an arc direction.

[0050] Of course, the cooling channel 14 can be a linear channel with connecting joints 11-2 at both ends. In this case, the two ends of the spiral structure 2 can respectively abut against the connecting joints 11-2 at both ends. Specifically, the two ends of the center rod 22 can respectively abut against the connecting joints 11-2 at both ends.

[0051] In some embodiments, generally speaking, the spiral structure 2 is a rigid structure that cannot be completely deformed and is generally an integral piece. In this case, the spiral can only be inserted in a straight line. Of course, the spiral structure 2 can be a bendable structure, such as being able to adjust the degree of bending of the axis of the central rod 22. In this case, the channel hole 11-4 can be in an arc shape, and the spiral structure 2 can still be inserted from the above-mentioned hole end 11-5, and bend adaptively during the insertion process so as to be adaptively inserted.

[0052] In some embodiments, the spiral structure 2 and the cold plate 11 - 1 are generally made of the same material, but they may also be made of different materials.

[0053] In some embodiments, further, in order to ensure the heat exchange efficiency, the cooling channel 14 is generally made to include a plurality of channel sections arranged in parallel transversely to increase the heat exchange area. At this time, spiral blades 21 can be correspondingly provided at multiple locations of the cooling channel 14. Based on this, the heat exchange substrate 1 can also include a connector 11-3, so that a connecting channel can be formed in the connector 11-3. At this time, a plurality of channel holes 11-4 arranged in parallel are opened on the cold plate 11-1, and the orifice end 11-5 of at least one channel hole 11-4 is connected to the above-mentioned connecting joint 11-2. At this time, the multiple ports intersecting the connecting channel are respectively connected to the corresponding ports of each of the channel holes 11-4 through the connecting joint 11-2. At this time, the connecting member 11-3 can be a series pipe fitting, or a diverter or a water collector. Of course, some connecting joints 11-2 can also be used as external joints.

[0054] In some embodiments, the connector 11 - 3 may be a U-shaped tube, wherein the lumen of the U-shaped tube is a connecting channel, wherein the U-shaped tube may be a rigid tube or a flexible tube.

[0055] In some embodiments, each channel hole 11-4 on the cold plate 11-1 can be provided with a spiral blade 21, specifically, a spiral structure 2. Each channel hole 11-4 is arranged along a straight line through the cold plate 11-1, and a connecting joint 11-2 is arranged at both ends. In the extension direction of the channel hole 11-4, U-shaped tubes are arranged on both sides of the cold plate 11-1 to connect each channel hole 11-4 in series in sequence. And the connecting joint 11-2 connected to one end of at least one channel hole 11-4 is an external liquid inlet joint 15; the connecting joint 11-2 connected to one end of at least one channel hole 11-4 is an external liquid outlet joint 16. So that the external liquid inlet joint 15, the channel hole 11-4, the U-shaped tube, the channel hole 11-4, and the external liquid outlet joint 16 are connected in sequence, wherein the external liquid inlet joint 15 and the external liquid outlet joint 16 are provided with one or more groups of U-shaped tubes and channel holes 11-4 connected in series to form a serpentine channel. Each U-shaped tube and each channel hole 11 - 4 are combined to form the above-mentioned cooling channel 14 , and at least one channel hole 11 - 4 is provided with a spiral blade 21 to form a vortex channel 14 - 1 .

[0056] In some embodiments, at least one side of the cold plate 11 - 1 along the thickness direction is a heating surface 13 , which is heated by the heating surface 13 and transfers the heat to the channel hole 11 - 4 to exchange heat with the fluid inside through the hole wall of the channel hole 11 - 4 .

[0057] In some embodiments, generally speaking, the spiral structure 2 is also made of metal material, or other materials with thermal conductivity. In order to improve the heat exchange efficiency and the assembly effect, it is preferred that the outer edge of the spiral blade 21 in the spiral structure 2 is attached with a heat-conducting polymer layer, such as a heat-conducting plastic layer or a heat-conducting silica gel layer, and the heat-conducting polymer layer is closely attached to the hole wall of the channel hole 11-4 to form a tight combination with the wall of the channel hole 11-4, and can also be well fixed while transferring heat. The heat is transferred to the spiral structure 2 through the heat-conducting polymer layer, and the spiral structure 2 can transfer heat to each other because the fluid in the channel hole 11-4 will also contact, and only this spiral structure 2 transfers heat to the fluid in the channel hole 11-4, which can improve the heat dissipation efficiency.

[0058] The polymer layer can be attached by spraying and surround the outer edge of the spiral blade. Of course, the polymer layer can also be made into a rubber strip to be stuck on the outer edge of the spiral blade. In this case, the outer edge is inserted into the corresponding slot of the rubber strip.

[0059] In some embodiments, the center line of at least one vortex channel 14-1 is tilted to facilitate the insertion of the spiral blade 21 from the orifice end 11-5. Specifically, the center line of at least one vortex channel 14-1 can be tilted relative to the heating surface 13. When in use, the heating surface 13 is generally arranged horizontally, so that one end of the vortex channel 14-1 is tilted downward, and when installed, it is inserted into the spiral blade 21 from the upper end. Under the action of gravity, the spiral blade 21 moves downward, which can effectively reduce the friction between the spiral blade 21 and the channel wall.

[0060] In some embodiments, it is preferred that the vortex channel 14-1 is tilted downward along the internal fluid flow direction, and during the fluid flow process, a thrust will be generated on the spiral blade 21 along the fluid flow direction. When there is no fluid, the spiral blade 21 will slide to the lower end under the action of gravity until it is limited. When the fluid is turned on, since the fluid flows to the lower end, the driving force on the spiral blade 21 will also be downward, and the spiral blade 21 can remain in the current position to avoid shaking. If it is tilted upward along the fluid flow direction, the spiral blade 21 may slide upward under the large thrust generated by the fluid, and then a vibration sound will occur, and the impact will reduce the service life.

[0061] In some embodiments, of course, the vortex channel 14-1 is inclined upward along the direction of the internal fluid flow. At this time, the spiral blade 21 has a tendency to move downward, and even if the fluid flow cannot overcome it at all, the fluid flow can form a certain support. Because the downward movement trend is relatively large, when the thrust of the fluid flow is not enough to overcome the downward movement trend, it can overcome part of the gravity, thereby reducing the force on the lower end of the spiral blade 21.

[0062] In some embodiments, inserting the spiral blade 21 into the hole of the vortex channel 14-1 along the axial direction may cause some assembly difficulties. Based on this, it is preferred that the heat exchange substrate 1 here includes a first plate body 12-1 and a second plate body 12-2 assembled with each other; the channel cavity of the cooling channel 14 is separated into a first groove-shaped cavity 12-3 and a second groove-shaped cavity 12-4 along the cross section, and the cross section here is generally a symmetrical cross section. For example, if the cross section of the channel cavity is circular, the dividing line between the first groove-shaped cavity 12-3 and the second groove-shaped cavity 12-4 can be an axial cross section. The first groove-shaped cavity 12-3 is located in the first plate body 12-1, and the second groove-shaped cavity 12-4 is located in the second plate body 12-2. The spiral blade 21 can be placed in the first groove-shaped cavity 12-3 from the notch 12-5 of the first groove-shaped cavity 12-3 on one side, and placed in the second groove-shaped cavity 12-4 from the notch 12-5 of the second groove-shaped cavity 12-4 on the other side. Although the combination method will lead to a relatively high cost for controlling the flow resistance of the inner wall of the channel, the overall assembly is convenient and simple. At this time, the first groove cavity 12-3 and the second groove cavity 12-4 are corresponding serpentine grooves, which can be combined to form a serpentine structure, and there is no need to set too many connectors 11-3.

[0063] At this time, the corresponding cooling channel includes a plurality of parallel straight channel sections, each of which is provided with a spiral blade 21. Of course, a spiral blade 21 with a curved axis can also be used to adapt to the curved channel, but the cost is relatively high. With respect to the axis of the spiral blade 21, the spiral blade 21 is arranged around the axis of the spiral blade 21. When the above-mentioned center rod 22 is provided, the axis of the center rod 22 is also the axis of the spiral blade 21.

[0064] In some embodiments, a swirl liquid cooling plate device is provided, and the heat exchange capacity of each surface is enhanced by setting a spiral structure in the cooling channel 14 inside the heat exchange substrate 1. The spiral structure can make the fluid rotate and move forward inside the flow channel, and the fluid can destroy the boundary layer around the flow channel during the rotation process, thereby obtaining a stronger heat exchange capacity than the traditional structure, so that the heat exchange substrate 1 can be used in occasions with higher heat flux density, wherein the cooling channel 14 of the heat exchange substrate 1 is such as a serpentine channel.

[0065] It should be noted that swirl flow, as the name implies, is a rotating flow. The direction of the fluid flow is no longer parallel to the flow channel, but it rotates forward. This flow mode can effectively destroy the boundary layer due to the presence of a velocity component perpendicular to the flow channel direction, thereby effectively enhancing the heat exchange capacity.

[0066] In some embodiments, the cyclone heat exchange device includes a heat exchange substrate 1, a joint, a pipeline, and a spiral structure. The heat exchange substrate 1 is a metal substrate, which is the main structure of the cyclone heat exchange device. According to the actual working conditions, a plurality of circular holes are machined inside the heat exchange substrate 1 as cooling channels 14, a spiral structure is placed inside the cooling channel 14, and joints 11-2 are welded at both ends of the flow channel. Adjacent joints 11-2 are connected by U-shaped pipes to form a series loop.

[0067] In some embodiments, the flow channel of the heat exchange matrix 1 is machined, the spiral structure 2 is inserted from one side of the flow channel and positioned with the help of limiting holes. After the spiral structure 2 is installed, the joint is installed and fixed by welding, and finally the joint 11-2 is connected with a pipeline to form a loop.

[0068] In some embodiments, the spiral structure 2 can be a single spiral structure or a double spiral structure. The flow path length of the spiral structure is linked to the spacing between the blades. The larger the spacing, the longer the flow path. Under the same blade spacing, the double spiral has a larger heat exchange area and a better heat exchange effect. Correspondingly, the internal flow velocity increases and the flow resistance is greater.

[0069] In some embodiments, the cooling channel 14 can be designed to form a certain angle with the upper and lower surfaces of the heat exchange substrate 1, that is, it is not set in parallel, but at an angle. In this way, the spiral structure 2 can slide downward by gravity and abut against the position of the limit hole, thereby achieving a better fixing effect.

[0070] From another perspective, the center line of the vortex section loaded with the spiral structure 2 in the cooling channel 14 can be set to be inclined relative to the horizontal plane, where the horizontal plane can also be understood as the heating surface 13 of the heat exchange substrate 1. The inclination angle should not be too large. Furthermore, the central axis of the spiral structure 2 can be gradually tilted downward along the flow direction of the cooling fluid, that is, the vortex section gradually tilts downward and remains fixed under the action of the fluid. If it is set in the opposite direction, the central axis of the spiral structure 2 gradually tilts upward along the flow direction of the cooling fluid, which is conducive to reducing the end force problem.

[0071] In some embodiments, the heat exchange substrate 1 may include a first plate body 12-1 and a second plate body 12-2, and the cooling channel may be separated into two half-channel structures along a symmetrical section, one half-channel structure being located on the first plate body 12-1, and the other half-channel structure being located on the second plate body 12-2. The symmetrical section refers to a symmetrical plane of the cooling channel, and the entire center line of the cooling channel is located within the symmetrical plane. Examples of the half-channel structure are as follows: for a circular channel structure with a circular cross section, its half-channel structure is a channel structure with a semicircular cross section; for a square channel structure with a square cross section, its half-channel structure is a channel structure with a rectangular cross section, and the "rectangle" mentioned later is half of the aforementioned "square".

[0072] During assembly, the spiral structure is first placed in the half channel structure of the first plate 12-1, and then the second plate 12-2 is closed, and the first plate 12-1 and the second plate 12-2 are sealed and connected, so that the half channel structure of the first plate 12-1 (the first groove cavity 12-3) and the half channel structure of the second plate 12-2 (the second groove cavity 12-4) are combined to form a complete cooling channel 14. This method is easy to process, and when multiple eddy current segments are set, there is no need to set a separate connection structure between the multiple eddy current segments, and the arrangement orientation of the eddy current segments and whether the extension line is a straight line are not restricted, and the operation is more convenient and simple.

[0073] In some embodiments, in the swirl liquid heat exchange device, the heat exchange matrix 1 adopts a spiral structure, introduces the rotating jet into the field of electronic heat dissipation, and expands the traditional two-dimensional fluid disturbance into a three-dimensional fluid disturbance. The swirl liquid heat exchange device can greatly improve the heat exchange capacity of the heat exchange matrix 1. At the same time, compared with the shovel-tooth heat exchange matrix 1 with the same high heat exchange capacity, the welding difficulty of this structure is low, so the processing cost is low.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat exchange device, characterized in that: The invention comprises a heat exchange substrate (1), wherein at least one side of the heat exchange substrate (1) has a heat receiving surface (13), wherein the heat exchange substrate (1) has a cooling channel (14) capable of conducting heat with the heat receiving surface (13), wherein at least one section of the cooling channel (14) is a vortex channel (14-1); and wherein the vortex channel (14-1) is provided with spiral blades (21) extending in the extension direction of the vortex channel (14-1) so as to enable the fluid to flow in a spiral manner.

2. The heat exchange device according to claim 1, characterized in that: The invention comprises a spiral structure (2), wherein the spiral structure (2) comprises a central rod (22) and spiral blades (21), wherein the spiral blades (21) are arranged spirally around the central rod (22); and the spiral blades (21) and the central rod (22) are integrally formed.

3. The heat exchange device according to claim 2, characterized in that: The cooling channel (14) is a serpentine channel, the serpentine channel comprises a straight channel, and the straight channel is the vortex channel (14-1).

4. The heat exchange device according to any one of claims 2 to 3, characterized in that: The heat exchange substrate (1) comprises a cold plate (11-1) and a connecting joint (11-2); the cold plate (11-1) is provided with a channel hole (11-4) extending to the side; the spiral blade (21) can be inserted into the channel hole (11-4) from an orifice end (11-5) at at least one end of the channel hole (11-4) to form the vortex channel (14-1); the connecting joint (11-2) is sealedly connected to at least one of the orifice ends (11-5), and the connecting channel of the connecting joint (11-2) is connected to the channel hole (11-4).

5. The heat exchange device according to claim 4, characterized in that: The heat exchange substrate (1) further comprises a connecting piece (11-3), a connecting passage being formed in the connecting piece (11-3); a plurality of channel holes (11-4) arranged in parallel are provided on the cold plate (11-1); and the plurality of ports intersecting the connecting passage are respectively connected to the ports of the corresponding channel holes (11-4) through the connecting joint (11-2).

6. The heat exchange device according to claim 5, characterized in that: The connecting piece (11-3) is a U-shaped tube, and the tube cavity of the U-shaped tube is the connecting channel; each of the channel holes (11-4) on the cold plate (11-1) is provided with the spiral blade (21); each of the channel holes (11-4) is arranged along a straight line through the cold plate (11-1), and both ends are provided with the connecting joints (11-2); in the extension direction of the channel holes (11-4), both sides of the cold plate (11-1) are provided with the U-shaped tube, so as to connect each of the channel holes (11-4) in series in sequence; and the connecting joint (11-2) connected to one end of at least one of the channel holes (11-4) is an external liquid inlet joint (15); and the connecting joint (11-2) connected to one end of at least one of the channel holes (11-4) is an external liquid outlet joint (16).

7. The heat exchange device according to claim 6, characterized in that: The plate surface on one side of the cold plate (11-1) along the thickness direction is the heating surface (13); and the center line of at least one of the eddy current channels (14-1) is arranged to be inclined relative to the heating surface (13).

8. The heat exchange device according to any one of claims 2 to 3, characterized in that: The heat exchange matrix (1) comprises a first plate body (12-1) and a second plate body (12-2) which are assembled with each other; the channel cavity of the cooling channel (14) is separated into a first groove-shaped cavity (12-3) and a second groove-shaped cavity (12-4) along a cross section, the first groove-shaped cavity (12-3) being located in the first plate body (12-1), the second groove-shaped cavity (12-4) being located in the second plate body (12-2), and the spiral blade (21) being able to be placed into the first groove-shaped cavity (12-3) from a groove opening on one side and into the second groove-shaped cavity (12-4) from a groove opening on the other side.

9. The heat exchange device according to claim 8, characterized in that: The cooling channel (14) comprises a plurality of parallel straight channel segments, each of which is provided with the spiral blade (21).

10. The heat exchange device according to claim 1, characterized in that: The spiral blade (21) is a single spiral structure or a double spiral structure.

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