[0072] figure 1 , figure 2 The three-dimensional appearance view and the three-dimensional exploded view of a preferred embodiment of the liquid-cooled head of the present invention include a heat conducting body 1, a heat dissipation unit 2, and a rotating device 3. The heat-conducting body 1 can be made of heat-conducting metal, such as copper or aluminum. It has an introduction channel 101 for introducing cooling liquid (not shown), an outlet channel 102 for exporting cooling liquid, and a connecting introduction flow. A heat exchange area 103 between the channel 101 and the outlet flow channel 102.
[0073] In this embodiment, for ease of assembly, such as figure 2 As shown, the heat-conducting body 1 includes a first block 11, a second block 12, and a third block 13 stacked in sequence. These blocks 11-13 are tightly connected by a plurality of bolt assemblies (not shown in the figure), and use the arrangement of a plurality of sealing rings, such as figure 2 and image 3 The seal rings A to F shown in the figure ensure that the coolant flowing through the inlet flow passage 101, the heat exchange area 103, and the outlet flow passage 102 of the heat-conducting body 1 will not escape from the overlap of these blocks 11-13 vent.
[0074] Such as figure 2 , Figure 4 As shown, the introduction channel 101 penetrates the first block 11 and the second block 12 and has an inlet 11 a located on a top surface 110 of the first block 11. The outlet channel 102 is partially formed in the first block 11 and partially formed in the second block 12, and has an outlet 11b located on the top surface 110 of the first block 11, and two guides formed in the second block 12 口120. The two inlets 120 are respectively located on the left and right sides of the inlet channel 101. The heat exchange area 103 is located in the third block 13 and communicates with the aforementioned two inlets 120. It should be noted that the above-mentioned flow channel design is merely illustrative, and is not intended to limit the present invention.
[0075] Such as Figure 4 and Figure 5 As shown, the heat dissipation unit 2 is provided in the heat exchange area 103 of the third block 13 of the heat conducting body 1, and has a plurality of spaced apart heat dissipation fins 21, and a container defined by the plurality of heat dissipation fins 21 Chamber 20 and multiple channels 210. The chamber 21 communicates with the inlet flow passage 101 of the heat-conducting body 1, and a plurality of the channels 210 communicate the chamber 20 and the outlet flow passage 102 of the heat-conducting body 1. In this embodiment, the plurality of heat dissipation fins 21 and the third block 13 are integrated, and a thin sheet type is selected, that is, the plurality of heat dissipation fins 21 are thin sheets parallel to each other, thereby having a large The overall heat dissipation area. Such as image 3 As shown, a bottom surface 130 of the third block 13 is used to contact a heat source (such as a central processing unit, a south bridge chip or other heat sources, not shown in the figure), and corresponds to the plurality of heat dissipation fins on the bottom surface 130 21 can quickly absorb the heat generated by the heat source.
[0076] Such as Figure 5 As shown, the rotating device 3 is rotatably disposed in the heat conducting body 1 and is located in the chamber 20 of the heat dissipation unit 2. The rotating device 3 includes a rotating body 30 and a rotating shaft 31. The rotating shaft 31 is connected to the rotating body 30 and is disposed on the heat dissipation unit 2. In this embodiment, the liquid cold head further includes a partition 104 disposed on the heat dissipation unit 2 and covering the chamber 20, and the partition 104 further defines a plurality of through holes 105. The two ends of the rotating shaft 31 are respectively supported by the partition 104 and the heat dissipation unit 2 on the third block 13. In this embodiment, as Figure 6 to Figure 9 As shown, the rotating body 30 is disk-shaped and has a shaft hole 32 for the rotating shaft 31 to pass through, so the rotating body 30 can rotate around the rotating shaft 31. The rotating body 30 also has a plurality of fan blades 33 arranged in a ring shape and connected to each other, and the front edge of each fan blade 33 forms a guiding inclined surface 330, and each guiding inclined surface 330 and the rear edge of the preceding fan blade 33 A through hole 331 is formed in between. When a plurality of the fan blades 330 are impacted by a top-down fluid (such as a cooling liquid), part of the fluid will flow into the through holes 331 along the plurality of inclined guide surfaces 330 and then continue to flow downward. In the process, The plurality of inclined guide surfaces 330 can decompose the horizontal component force from the impact force received, so that the rotating body 30 rotates in a predetermined direction under the push of the horizontal component force (in this embodiment, it rotates counterclockwise), and the impact force becomes greater Larger, the faster the rotation speed of the rotating body 30.
[0077] Another example Image 6 and Picture 10 As shown, in this embodiment, the rotating device 3 may further include one or more upper bumps 34, which are located on a top surface of the rotating body 30 and close to the shaft hole 32, and higher than the rotating body 30, so as to avoid The rotating body 30 collides with the partition 104 when rotating. In addition, such as Figure 8 and Picture 10 As shown, the rotating device 3 may further include one or more lower bumps 35. The lower bumps 35 are located on a bottom surface of the rotating body 30 and close to the shaft hole 32, and are lower than the rotating body 30, so as to prevent the rotating body 30 from rotating. Hit the surface of the heat dissipation unit 2. Another example Figure 5 and Picture 10 As shown, the rotating shaft 31 may also have a supporting plate 311. There is a distance between the supporting plate 311 and the surface of the heat dissipating unit 2, and correspondingly support the aforementioned lower bump 35, so that the rotating body 30 and the surface of the heat dissipating unit 2 are kept at a distance. .
[0078] Picture 11 A liquid cooling system using the liquid cooling head of the present invention is shown, in which the inlet 11a of the heat conducting body 1 is connected to an outlet 41 of a pump 4 through a connecting pipe 61, and the outlet 11b is connected to another connecting pipe 62 An input port 51 of a heat sink 5 and an output port 52 of the heat sink 5 are connected to a suction port 42 of the pump 4 through a connecting pipe 63. Such as Picture 11 and Picture 12 As indicated by the arrow in the middle, driven by the pump 4, the coolant, such as water or refrigerant, discharged from the discharge port 41 of the pump 4 will enter the heat conducting body 1 from the inlet 11a, and flow through the introduction channel 101 and the heat In the heat exchange area 103, the heat absorbed by the heat dissipation unit 2 from the heat source is absorbed in the heat exchange area 103, and then enters the outlet channel 102 from the inlets 120 on both sides, and then flows along the outlet channel 102, and flows out of the heat conducting body 1 from the outlet 11b, Then, it flows into the heat sink 5 to dissipate heat, and then flows back into the suction port 42 of the pump 4. Among them, when the cooling liquid enters the heat exchange zone 103, it will impact the rotating body 30, and therefore drive the rotating body 30 to rotate. The rotating rotating body 30 will spray the cooling liquid to the periphery, and thus disrupt the flow direction of the cooling liquid. The turbulent flow increases the collision between the cooling liquid and the cooling fins 21 of the cooling unit 2, thereby increasing the heat exchange between the two, so that the heat absorption efficiency of the cooling liquid can be improved, and the cooling liquid heat absorption of the existing liquid cooling head is solved Efficiency needs to be improved.
[0079] In this embodiment, such as image 3 , Picture 12 As shown, the introduction channel 101 forms an enlarged space 101a corresponding to the chamber 20, so that the cooling liquid can flow into the heat conducting body 1 quickly. Due to the barrier 104, the cooling liquid can only flow into the chamber 20 through the through hole 105. At this time, because the liquid inlet area is reduced, the impact force of the cooling liquid entering the chamber 20 on the rotating body 30 can be increased, and Therefore, the rotation speed of the rotating body 30 is increased, and a more turbulent flow is generated, which further improves the heat absorption efficiency of the coolant.
[0080] In this embodiment, as Figure 4 , 12 As shown, the two lead openings 120 of the second block 12 of the heat conducting body 1 each form a slope 121 to guide the cooling liquid flowing through the two lead openings 120, which can reduce the flow of the cooling liquid from the heat exchange area 103 to The flow resistance of the outlet channel 102 increases the flow rate of the cooling liquid, and further improves the heat absorption efficiency of the cooling liquid.
[0081] Figure 13 Another rotating device 3a is shown, which includes a rotating body 30a and a rotating shaft 31a. The rotating body 30a is substantially the same as the rotating body 30, and the rotating shaft 31a is integrally formed with the rotating body 30a, or the rotating shaft 31a is connected to the rotating body 30a. Fixed, so the rotating body 30a and the rotating shaft 31a will rotate together. The rotating body 30a of the rotating device 3a can also be rotated by the impact of the cooling liquid, so as to cause a turbulent flow that can improve the heat absorption efficiency of the cooling liquid.
[0082] Figure 14 Another rotating device 3b is shown, which includes a rotating body 30b and a rotating shaft 31b. The rotating body 30b is substantially the same as the above-mentioned rotating body 30. In this embodiment, the shaft 31b includes a head 312b and a rod 313b extending downward from the head 312b. The diameter of the head 312b is larger than the rod 313b. The rod 313b passes through the shaft hole 32b of the rotating body 30b. Fixed to the heat dissipation unit 2b. The heat dissipating unit 2b is substantially the same as the heat dissipating unit 2 described above. The main difference is that the heat dissipating unit 2b forms a joint 20b corresponding to the rod 313b to correspond to the joint rod 313b. The coupling manner of the end section of the rod portion 313b and the coupling portion 20b can be screwed, welded, tightly fitted or other coupling manners, so that the two can be combined and fixed. In this embodiment, the rotating shaft 31b is a bolt or screw, so it is combined and fixed to the joint portion 20b of the heat dissipation unit 2b by screwing. In this way, the end section of the entire rotating shaft 31b can be fixed on the heat dissipation unit 2b, so that the rotating body 30b is located between the heat dissipation unit 2b and the head 312b of the rotating shaft 31b, and can be rotated by the impact of the coolant, thereby resulting in a liftable The turbulent flow of cooling liquid heat absorption efficiency. The advantage of this is that the partition 104 can be omitted, which makes the structure of the liquid cold head simpler. In addition, in an embodiment, the rotating shaft 31b may further include a supporting plate 311b, the supporting plate 311b is sleeved and fixed on the rod portion 313b, and has a certain distance from the surface of the heat dissipation unit 2b, and correspondingly supports the rotating body 30b The upper and lower bumps 35b keep the distance between the rotating body 30b and the surface of the heat dissipation unit 2b. The fixing method of the support plate 311b and the rod portion 313b can be screwed, welded, tightly fitted or other fixing methods, so that the two are combined and fixed.
[0083] Compared with the prior art, the liquid-cooling head of the present invention can be configured as described above, especially using the rotating device 3, 3a or 3b to disrupt the flow of the cooling liquid to form a turbulent flow, so as to improve the heat absorption efficiency of the cooling liquid and make the liquid cooling The head and liquid cooling system have better heat dissipation effect.
