Liquid cooling radiator with improved heat dissipation effect

Abstract

The application discloses a liquid cooling radiator with improved heat dissipation effect, which comprises a liquid discharge pipe, heat dissipation fins arranged on the liquid discharge pipe, a shunt liquid collecting groove, a liquid collecting box, a liquid pump and a heat dissipation base. The liquid collecting box is internally partitioned into a cold liquid cavity, a liquid pump mounting cavity and a hot liquid cavity. The shunt liquid collecting grooves are arranged at two ends of the liquid discharge pipe. The shunt liquid collecting grooves at the two ends are respectively partitioned into a first cold liquid shunt groove, a second cold liquid shunt groove, a first hot liquid shunt groove and a second hot liquid shunt groove. The liquid discharge pipe is provided with a first backflow discharge pipe and a second backflow discharge pipe. The cold liquid in the first and second cold liquid shunt grooves respectively enters the cold liquid cavity, flows through the heat dissipation base, absorbs heat of the heat dissipation base to become hot liquid, is sucked by the liquid pump into the liquid pump mounting cavity, enters the hot liquid cavity, flows to the first and second hot liquid shunt grooves respectively, and is cooled and backflowed to the first and second cold liquid shunt grooves through the first and second backflow discharge pipes to become cold liquid, thereby forming double circulation, effectively improving liquid flow balance and stability, and achieving better heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat sink technology, in particular to a liquid cooling heat sink for improving heat dissipation effect. BACKGROUND

[0002] The current liquid cooling heat sink is usually composed of a liquid cooling row, a liquid cooling head and a liquid pipe, the liquid pipe is connected between the liquid cooling row and the liquid cooling head, the liquid pipe is used to make the liquid in the liquid cooling row and the liquid cooling head circulate, the liquid absorbs heat on the liquid cooling head, then enters the liquid cooling row to dissipate heat, and the liquid after heat dissipation flows back to the liquid cooling head. In actual use, problems such as uneven liquid flow in the row pipe of the liquid cooling row and poor flow stability are prone to occur, resulting in unsatisfactory heat dissipation effect.

[0003] Therefore, the applicant has carefully studied a new technical solution to solve the above problems. SUMMARY

[0004] Therefore, the present application aims to provide a liquid cooling heat sink for improving heat dissipation effect, which effectively improves the liquid flow balance and stability, and has better heat dissipation effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0006] The liquid cooling heat sink for improving heat dissipation effect comprises a liquid row pipe, heat dissipation fins arranged on the liquid row pipe, a shunt liquid collecting groove, a liquid collecting box, a liquid pump and a heat dissipation base, wherein:

[0007] The liquid collecting box is arranged in the liquid collecting box mounting cavity, and the liquid collecting box is provided with a cold liquid cavity, a liquid pump mounting cavity and a hot liquid cavity, and the liquid pump is arranged in the liquid pump mounting cavity; the heat dissipation base is arranged at the bottom of the liquid collecting box;

[0008] The shunt liquid collecting grooves are arranged at both ends of the liquid row pipe, the first and second cold liquid shunt grooves are arranged in the shunt liquid collecting groove at one end, and the first and second hot liquid shunt grooves are arranged in the shunt liquid collecting groove at the other end; the liquid row pipe has first and second return row pipes located at both sides of the liquid collecting box mounting cavity;

[0009] The cold liquid in the first and second cold liquid shunt grooves enters the cold liquid cavity, then flows through the heat dissipation base together, the cold liquid absorbs heat from the heat dissipation base to become hot liquid, the hot liquid is sucked into the liquid pump mounting cavity by the liquid pump, then flows out of the liquid pump mounting cavity and enters the hot liquid cavity, the hot liquid in the hot liquid cavity flows to the first and second hot liquid shunt grooves respectively, the hot liquid in the first hot liquid shunt groove is cooled and returned to the first cold liquid shunt groove by the first return row pipe to become cold liquid, the hot liquid in the second hot liquid shunt groove is cooled and returned to the second cold liquid shunt groove by the second return row pipe to become cold liquid, and double circulation is formed.

[0010] As a preferred solution, a liquid cooling head is further included, which is arranged at the bottom of the liquid collecting box, and the heat dissipation base is arranged at the bottom of the liquid cooling head for contacting the heat source.

[0011] As a preferred solution, the heat dissipation base has a heat dissipation bottom plate and heat dissipation fins integrally connected to the heat dissipation bottom plate, a liquid isolation cover is arranged at the front side of the heat dissipation bottom plate for covering the heat dissipation fins integrally connected to the heat dissipation bottom plate, a cold liquid input port is arranged on the liquid isolation cover, and a hot liquid output port is arranged at the circumferential side of the liquid isolation cover; a cold liquid output port is arranged at the bottom of the cold liquid cavity, and a hot liquid input port is arranged between the hot liquid cavity and the liquid pump mounting cavity; the liquid cooling head has a cold liquid flow channel and a hot liquid flow channel.

[0012] The cold liquid flows out of the cold liquid output port of the cold liquid cavity and flows into the cold liquid flow channel, and then flows into the liquid isolation cover through the cold liquid input port of the liquid isolation cover, exchanges heat with the heat dissipation base to become hot liquid, and then flows out of the hot liquid output port at the circumferential side of the liquid isolation cover and enters the hot liquid flow channel, and then flows out of the hot liquid flow channel and enters the liquid pump mounting cavity.

[0013] As a preferred solution, the cold liquid output port of the cold liquid cavity is arranged with two left and right spacing to correspond to the first and second cold liquid discharge pipe groups; the cold liquid flow channel is provided with two entrances corresponding to the cold liquid output port of the cold liquid cavity, the cold liquid flow channel extends from the entrance to each branch of the flow channel, the two branches of the flow channel converge and then extend to the outlet of the cold liquid flow channel; the outlet of the cold liquid flow channel is above the cold liquid input port of the liquid isolation cover,

[0014] The inlet of the hot liquid flow channel is above the circumferential side of the liquid isolation cover, the outlet of the hot liquid flow channel is arranged directly below the liquid pump, the hot liquid flow channel extends upward from the inlet, and extends above the top of the liquid isolation cover to below the liquid pump, and the liquid is discharged from the side of the liquid pump mounting cavity to the hot liquid cavity after being pumped by the liquid pump.

[0015] As a preferred solution, the liquid cooling head, the heat dissipation base, and the liquid isolation cover are sequentially arranged at the bottom of the liquid collecting box, the bottom of the liquid collecting box is recessed with an internally threaded hole with a blind end at the upper end, a screw is threaded through the heat dissipation bottom plate, the liquid cooling head, and the liquid isolation cover and is connected to the internally threaded hole; first liquid leakage prevention sealing rings are arranged between the liquid cooling head and the liquid collecting box, between the liquid cooling head and the heat dissipation base, and between the liquid cooling head and the liquid isolation cover.

[0016] As a preferred solution, the liquid collecting box includes a box body and a box cover assembled on the box body; the box body is separated into a cold liquid cavity, a liquid pump mounting cavity, and a hot liquid cavity by a liquid isolation sheet; the box cover protrudes into the box body, and correspondingly, the liquid pump mounting cavity is recessed from the top of the box cover.

[0017] As a preferred solution, the bottom of the liquid pump mounting cavity is centrally provided with an inlet hole, and the circumferential side of the liquid pump mounting cavity is provided with an outlet hole; a liquid blocking boss is protruded on one side of the inner circumferential wall of the liquid pump mounting cavity corresponding to the outlet hole, and a flow guiding groove is recessed on the other side corresponding to the outlet hole; the liquid blocking boss is gradually thinned along the circumferential direction of the impeller, and the flow guiding groove is gradually deepened along the circumferential direction of the impeller and penetrates the outlet hole.

[0018] As a preferred solution, the inner wall of the shunt liquid collecting groove is integrally formed with a convex part having a liquid injection port; the liquid injection port includes an internal threaded hole and a stepped hole for accommodating a nut part and a second liquid leakage prevention sealing ring, the internal threaded hole is connected to the inside of the liquid collecting box, and the stepped hole is connected between the internal threaded hole and the outside of the liquid collecting box.

[0019] Further comprising a liquid injection port sealing screw and a second liquid leakage prevention sealing ring, the second liquid leakage prevention sealing ring is located between the nut part of the screw and the inner end surface of the stepped hole, the liquid injection port sealing screw is screwed into the internal threaded hole, when the liquid injection port sealing screw is locked, the nut part extrudes the second liquid leakage prevention sealing ring to deform and tightly clamp between the nut part and the inner end surface of the stepped hole, achieving leakage prevention.

[0020] As a preferred solution, the stepped hole includes a first stepped hole and a second stepped hole arranged in sequence from outside to inside and penetrating, the first stepped hole is larger than the second stepped hole; the second liquid leakage prevention sealing ring is located in the second stepped hole, before the second liquid leakage prevention sealing ring is extruded by the nut part, the thickness of the second liquid leakage prevention sealing ring is higher than the first stepped surface of the first stepped hole, when the liquid injection port sealing screw is locked, the nut part extrudes the second liquid leakage prevention sealing ring until the nut part abuts against the first stepped surface, so that the second liquid leakage prevention sealing ring is deformed and filled in the second stepped hole, achieving leakage prevention.

[0021] Compared with the prior art, the present application has obvious advantages and beneficial effects, specifically, from the above technical solution, it is mainly through the setting of the liquid discharge pipe, the shunt liquid collecting groove, the liquid collecting box, the liquid pump and the heat dissipation base, the upper and lower shunt liquid collecting grooves are correspondingly provided with the first and second cold liquid shunt grooves and the first and second hot liquid shunt grooves, the cold liquid of the first and second cold liquid shunt grooves enters the cold liquid cavity through the corresponding first and second cold liquid discharge pipe groups, then enters the liquid pump mounting cavity, and then flows through the liquid cooling head and the heat dissipation base, the cold liquid absorbs the heat of the heat dissipation base to become hot liquid and enters the hot liquid cavity, and then enters the corresponding first and second hot liquid shunt grooves through the first and second hot liquid discharge pipe groups, and then cools and flows back into the first and second cold liquid shunt grooves through the corresponding first and second backflow discharge pipe groups, and so on, so that the liquid flow balance and stability can be improved, and the heat dissipation effect is better.

[0022] Secondly, the cold liquid cavity, the liquid pump installation cavity and the hot liquid cavity in the liquid collecting box are arranged, and the cold liquid flow channel and the hot liquid flow channel of the liquid cooling head are arranged, which forms a cold liquid entering the cold liquid cavity, then flowing through the cold liquid flow channel, the liquid separation cover, the heat dissipation base, then running around the liquid separation cover for one round and then entering the hot liquid flow channel and the hot liquid cavity; the cold liquid outlet of the cold liquid cavity is arranged at a left-right interval to correspond to the first and second cold liquid discharge pipe groups respectively, which is beneficial to the average distribution of the cold liquid; meanwhile, the liquid collecting box, the liquid separation cover and the heat dissipation base are all made of heat dissipation metal; in this way, on the one hand, the liquid flow balance and stability in the discharge pipe are further improved, and on the other hand, the zigzag flow channel and the flow direction design make the liquid be effectively and sufficiently cooled and radiated, and the heat dissipation effect is further improved;

[0023] Furthermore, the liquid cooling radiator has better applicability, good liquid leakage prevention effect, compact structure, modular design of the whole radiator and reduced occupied space.

[0024] In addition, a liquid blocking boss is protruded on one side of the inner circumferential side wall of the liquid pump installation cavity corresponding to the liquid outlet hole, and a flow guide groove is recessed on the other side corresponding to the liquid outlet hole, which has a good flow guide effect, better smoothness and is beneficial to improving the working efficiency of the liquid pump.

[0025] In order to more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below with reference to the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of a preferred embodiment of the present application;

[0027] Figure 2 is another perspective view of a preferred embodiment of the present application;

[0028] Figure 3 is an exploded view of a preferred embodiment of the present application;

[0029] Figure 4 is a liquid flow direction view of a preferred embodiment of the present application;

[0030] Figure 5 is a sectional view of a preferred embodiment of the present application (also showing the liquid flow direction);

[0031] Figure 6 is an exploded view of a liquid collecting box and a liquid cooling head of a preferred embodiment of the present application;

[0032] Figure 7 is another perspective view of a liquid cooling head of a preferred embodiment of the present application;

[0033] Figure 8 is a perspective view of a liquid pump installation cavity of a preferred embodiment of the present application;

[0034] Figure 9 is a sectional view of a liquid pump installation cavity of a preferred embodiment of the present application;

[0035] Figure 10 is an application diagram of a liquid pump installation cavity of a preferred embodiment of the present application;

[0036] Figure 11 is a sectional view of a liquid pump installation cavity of a preferred embodiment of the present application (the flow guide groove is a circular arc groove);

[0037] Figure 12 is a sectional view of a liquid pump installation cavity of a preferred embodiment of the present application (the flow guide groove is a V-shaped groove);

[0038] Figure 13 is a sectional view of a liquid pump installation cavity of a preferred embodiment of the present application (the flow guide groove is a rectangular groove).

[0039] Explanation of the attached drawings:

[0040] liquid discharge pipe 10 liquid collection box installation cavity 11

[0041] first return flow pipe group 101 second return flow pipe group 102

[0042] first hot liquid discharge pipe group 103 second hot liquid discharge pipe group 104

[0043] first cold liquid discharge pipe group 105 second cold liquid discharge pipe group 106

[0044] heat dissipation fins 107 provided on the liquid discharge pipe shunt liquid collection groove 20

[0045] first hot liquid shunt groove 21 second hot liquid shunt groove 22

[0046] first cold liquid shunt groove 23 second cold liquid shunt groove 24

[0047] liquid collection groove main body 201 connecting cover 202

[0048] second liquid separation sheet 203

[0049] liquid collection box 30 cold liquid cavity 31

[0050] liquid pump installation cavity 32 hot liquid cavity 33

[0051] cold liquid outlet 311

[0052] box main body 301 box cover 302

[0053] first liquid separation sheet 303

[0054] through hole 3011 liquid pump 40

[0055] PCB board 41 liquid cooling head 50

[0056] hot liquid flow channel 51 cold liquid flow channel 52

[0057] heat dissipation base 60 heat dissipation bottom plate 61

[0058] heat dissipation fins 62 integrally formed and connected to the heat dissipation bottom plate

[0059] clasp screw 71 liquid isolation cover 80

[0060] hot liquid outlet 81 cold liquid inlet 82

[0061] first liquid leakage prevention sealing ring 91 first liquid injection port A

[0062] second liquid injection port B liquid injection port sealing screw C

[0063] second liquid leakage prevention sealing ring D first step surface E

[0064] liquid inlet hole 321 liquid outlet hole 322

[0065] liquid blocking boss 323 flow guide groove 324

[0066] impeller 41. DETAILED DESCRIPTION

[0067] Please refer to Figures 1 to 13 the drawings, which show the specific structure of the preferred embodiments of the present application.

[0068] A liquid cooling radiator with improved heat dissipation effect, comprising a liquid discharge pipe 10, heat dissipation fins 107 arranged on the liquid discharge pipe, a flow distribution and liquid collection groove 20, a liquid collection box 30, a liquid pump 40, and a heat dissipation base 60, wherein:

[0069] The liquid collecting box 30 is arranged in the liquid collecting box mounting cavity 11, and the liquid collecting box 30 is internally partitioned into a cold liquid cavity 31, a liquid pump mounting cavity 32 and a hot liquid cavity 33, and the liquid pump 40 is arranged in the liquid pump mounting cavity 32; the heat dissipation base 60 is arranged at the bottom of the liquid collecting box 30; the shunt liquid collecting grooves 20 are arranged at two ends of the liquid discharge pipe 10 respectively, the first cold liquid shunt groove 23 and the second cold liquid shunt groove 24 are internally partitioned in the shunt liquid collecting groove 20 at one end, and the first hot liquid shunt groove 21 and the second hot liquid shunt groove 22 are internally partitioned in the shunt liquid collecting groove 20 at the other end; the liquid discharge pipe 10 has the first backflow discharge pipe 101 and the second backflow discharge pipe 102 located at two sides of the liquid collecting box mounting cavity 11; the cold liquid of the first cold liquid shunt groove 23 and the second cold liquid shunt groove 24 respectively enters the cold liquid cavity 31, and then flows through the heat dissipation base 60 together, the cold liquid absorbs heat of the heat dissipation base 60 to become hot liquid, is sucked into the liquid pump mounting cavity 32 by the liquid pump 40, flows out from the liquid pump mounting cavity 32 and enters the hot liquid cavity 33, and the hot liquid of the hot liquid cavity 33 respectively flows to the first hot liquid shunt groove 21 and the second hot liquid shunt groove 22, the hot liquid of the first hot liquid shunt groove 21 is cooled and backflows to the first cold liquid shunt groove 23 to become cold liquid through the first backflow discharge pipe 101, the hot liquid of the second hot liquid shunt groove 22 is cooled and backflows to the second cold liquid shunt groove 24 to become cold liquid through the second backflow discharge pipe 102, and double-side circulation is formed. The liquid discharge pipe 10 is divided into two half parts for circulation through the shunt liquid collecting groove 20, the liquid flow balance and stability are effectively improved, and the heat dissipation effect is better.

[0070] Specifically, the liquid cooling head 50 is further included, the liquid cooling head 50 is arranged at the bottom of the liquid collecting box 30, the heat dissipation base 60 is arranged at the bottom of the liquid cooling head 50 to contact the heat source, and the liquid discharge pipe 10 is arranged side by side to surround the liquid collecting box mounting cavity 11. Figure 3 The defined direction is used as an example for description (not limited to the direction), the liquid discharge pipe 10 includes the first backflow discharge pipe group 101 and the second backflow discharge pipe group 102 arranged at the left and right sides of the liquid collecting box mounting cavity 11 respectively, the first cold liquid discharge pipe group 105 and the second cold liquid discharge pipe group 106 arranged at the upper end of the liquid collecting box mounting cavity 11 with a left-right interval, and the first hot liquid discharge pipe group 103 and the second hot liquid discharge pipe group 104 arranged at the front end of the liquid collecting box mounting cavity 11 with a left-right interval; the front ends of the first cold liquid discharge pipe group 105 and the second cold liquid discharge pipe group 106 are communicated with the cold liquid cavity 31, and the rear ends of the first hot liquid discharge pipe group 103 and the second hot liquid discharge pipe group 104 are communicated with the hot liquid cavity 33.

[0071] The shunt header 20 is respectively arranged at the front end and the rear end of the liquid discharge pipe 10, and the rear end of the shunt header 20 is provided with the first cold liquid shunt groove 23 and the second cold liquid shunt groove 24, and the front end of the shunt header 20 is provided with the first hot liquid shunt groove 21 and the second hot liquid shunt groove 22; the second liquid separation piece 203 can be arranged in the shunt header 20, for example, the second liquid separation piece is arranged in the middle to divide the shunt header 20. The rear end of the first return pipe group 101 and the first cold liquid discharge pipe group 105 is communicated with the first cold liquid shunt groove 23, and the front end of the first return pipe group 101 and the first hot liquid discharge pipe group 103 is communicated with the first hot liquid shunt groove 21; the rear end of the second return pipe group 102 and the second cold liquid discharge pipe group 106 is communicated with the second cold liquid shunt groove 24, and the front end of the second return pipe group 102 and the second hot liquid discharge pipe group 104 is communicated with the second hot liquid shunt groove 22; as shown in Figure 3 The shunt header 20 includes the header main body 201 and the connecting cover 202 assembled on the header main body 201, and a plurality of holes are arranged on the connecting cover 202 to assemble with the discharge pipes of each pipe group.

[0072] Generally, the buckle 70 can be arranged on the rear side of the liquid cooling head 50 corresponding to the peripheral area of the heat dissipation base 60, the buckle 70 is locked on the liquid cooling head 50 through the buckle screw 71, and the buckle 70 is provided with locking holes for facilitating the installation and fixation of the whole liquid cooling radiator.

[0073] The heat dissipation base 60 has a heat dissipation bottom plate 61 and a heat dissipation fin 62 integrally connected to the heat dissipation bottom plate, and a liquid separation cover 80 is arranged on the upper side of the heat dissipation bottom plate 61 to cover the heat dissipation fin 62 integrally connected to the heat dissipation bottom plate. The liquid separation cover 80 is provided with a cold liquid input port 82, and the peripheral side of the liquid separation cover 80 is provided with a hot liquid output port 81; the bottom of the cold liquid cavity 31 is provided with a cold liquid output port 311, and the hot liquid input port is arranged between the hot liquid cavity 33 and the liquid pump installation cavity 32; the liquid cooling head 50 has a hot liquid flow channel 51 and a cold liquid flow channel 52; the cold liquid flows out of the cold liquid output port 311 of the cold liquid cavity 31 and flows into the cold liquid flow channel 52, and then flows into the liquid separation cover 80 through the cold liquid input port 82 of the liquid separation cover 80 to exchange heat with the heat dissipation base 60 and become hot liquid, the hot liquid flows out of the hot liquid output port 81 of the peripheral side of the liquid separation cover 80 and enters the hot liquid flow channel 51, and then flows out of the hot liquid flow channel 51 and enters the liquid pump installation cavity 33.

[0074] As shown in Figures 5 to 7

[0075] ​The cold liquid output port 311 of the cold liquid cavity 31 is arranged at intervals on the left and right sides to correspond to the areas where the first cold liquid row pipe group 105 and the second cold liquid row pipe group 106 are located; the inlet of the cold liquid flow channel 52 is provided with two cold liquid output ports 311 corresponding to the cold liquid cavity 31, the cold liquid flow channel 52 extends from the inlet to form two flow channel branches, the two flow channel branches converge and then extend to the outlet of the cold liquid flow channel 52; the outlet of the cold liquid flow channel 52 is above the cold liquid inlet 82 of the liquid separation cover 80;

[0076] The inlet of the hot liquid flow channel 51 is above the circumferential side of the liquid separation cover 80, the outlet of the hot liquid flow channel 51 is arranged directly below the liquid pump 40, the hot liquid flow channel 51 extends upward from the inlet and extends above the top of the liquid separation cover 80 to below the liquid pump 40, and the liquid is discharged from the side of the liquid pump 40 to the hot liquid cavity 33 after being pumped by the liquid pump 40;

[0077] The liquid cooling head 50 and the heat dissipation base 60 are sequentially stacked on the bottom of the liquid collecting box 30, the bottom of the liquid collecting box 30 is recessed with an internally threaded hole with a blind end at the upper end, and a screw is screwed into the internally threaded hole through the heat dissipation base plate 61 and the liquid cooling head 50; first liquid leakage prevention sealing rings 91 are arranged between the liquid cooling head 50 and the liquid collecting box 30, between the liquid cooling head 50 and the heat dissipation base plate 61, between the liquid cooling head 50 and the liquid separation cover 80, and between the liquid pump 40 and the box cover 302.

[0078] The liquid collecting box 30 comprises a box body 301 and a box cover 302 assembled on the box body 301; the box body 301 is provided with a plurality of mounting holes at both ends corresponding to the first cold liquid row pipe group 105, the second cold liquid row pipe group 106, the first hot liquid row pipe group 103, and the second hot liquid row pipe group 104, and the box body 301 is separated into a cold liquid cavity 31, a liquid pump installation cavity 32, and a hot liquid cavity 33 by a first liquid separation sheet 303; the box cover 302 protrudes into the box body 301, and correspondingly, the liquid pump installation cavity 32 is recessed from the top of the box cover 302; a PCB board 41 is arranged on the top of the box cover 302; the cold liquid output port 321 is arranged on the box cover 302, and a through hole 3011 is arranged at the bottom of the box body 301 to pass through the outlet of the hot liquid flow channel 51.

[0079] The first return row pipe group 101, the second return row pipe group 102, the first cold liquid row pipe group 105, the second cold liquid row pipe group 106, the first hot liquid row pipe group 103, and the second hot liquid row pipe group 104 each comprise one or a plurality of row pipes, and the heat dissipation fins 107 arranged on the liquid row pipes are usually located between adjacent row pipes and can be welded, tightly fitted, or the like. The heat dissipation fins 107 arranged on the liquid row pipes can adopt a V-shaped folded fin structure, of course, other shapes can also be designed with slight changes, which are not limited herein.

[0080] The rear-end diversion and collection tank 20 is provided with a first liquid injection port A corresponding to the first cold liquid diversion tank 23 or the second cold liquid diversion tank 24. Correspondingly, the front-end diversion and collection tank 20 is provided with a second liquid injection port B corresponding to the second hot liquid diversion tank 22 or the first hot liquid diversion tank 21. Preferably, the inner wall of the diversion collection tank 20 is integrally formed with a protrusion having an injection port; the injection port includes an internal threaded hole and a stepped hole for accommodating a nut and a second leak-proof sealing ring D. The internal threaded hole communicates with the interior of the collection box 30, and the stepped hole communicates with the exterior of the collection box 30; it also includes an injection port sealing screw C and a second leak-proof sealing ring D. The second leak-proof sealing ring D is located between the nut of the injection port sealing screw C and the inner end face of the stepped hole. When the injection port sealing screw C is screwed into the internal threaded hole and the injection port sealing screw C is locked, the nut compresses the second leak-proof sealing ring D, causing it to deform and clamp between the nut and the inner end face of the stepped hole, thereby achieving leak prevention. Here, the stepped hole includes a first stepped hole and a second stepped hole that are sequentially arranged from the outside to the inside, with the first stepped hole being larger than the second stepped hole; the second leak-proof sealing ring D is located in the second stepped hole. Before the second leak-proof sealing ring D is squeezed by the nut, the thickness of the second leak-proof sealing ring D is higher than the first stepped surface E of the first stepped hole. When the injection port sealing screw C is locked, the nut squeezes the second leak-proof sealing ring D until the nut abuts against the first stepped surface E, causing the second leak-proof sealing ring D to deform and fill the second stepped hole, thus achieving leak prevention.

[0081] And, such as Figures 8 to 13 As shown, a liquid inlet 321 is centrally located at the bottom of the liquid pump mounting cavity, and a liquid outlet 322 is located on the lower periphery of the liquid pump mounting cavity. A liquid-blocking boss 323 protrudes from one side of the inner circumferential wall of the liquid pump mounting cavity corresponding to the liquid outlet 322, and a flow-guiding groove 324 is recessed on the other side corresponding to the liquid outlet 322. The impeller 41 of the liquid pump rotates in the front-to-back direction. The liquid-blocking boss 323 is arranged in a gradually thinning manner along the circumferential direction of the impeller 41, and the flow-guiding groove 324 is arranged in a gradually deepening manner along the circumferential direction of the impeller 41, penetrating the liquid outlet 322. Simultaneously, the area occupied by the flow-guiding groove 324 in the vertical direction gradually increases along the circumferential direction of the impeller 41. Figure 10As shown, the end of the liquid blocking boss 323 extends to the opposite side of the liquid outlet hole 322, and the starting end of the flow guide groove 324 is spaced from the end of the liquid blocking boss 323. The liquid rotates along the liquid blocking boss 323, and the liquid containing space is gradually increased until the area between the end of the liquid blocking boss 323 and the starting end of the flow guide groove 324, reaching the maximum; and the starting end of the flow guide groove 324, which is further recessed along the inner peripheral side wall of the liquid pump mounting cavity, is provided with a flow guide groove 324, and the liquid rotates out along the flow guide groove 324. Since the flow guide groove 324 is gradually increased and deepened, it is beneficial for the liquid to quickly pass through the flow guide groove 324 to reach the liquid outlet hole 322. Preferably, the first end of the liquid blocking boss 323 is a concave arc surface. When the liquid hits the first end of the liquid blocking boss 323, the concave arc surface forms a local rotary stop effect, further ensuring the liquid output amount of the liquid outlet hole 322. As shown in Figure 11 As shown in Figure 13 As shown, the cross section of the flow guide groove 324 can be in the shape of a circular arc groove, a V-shaped groove, a rectangular groove or other shapes, as long as it is recessed on the inner peripheral side wall of the liquid pump mounting cavity.

[0082] The design focus of the present application is that it mainly sets a liquid discharge pipe, a shunt liquid collecting groove, a liquid collecting box, a liquid pump and a heat dissipation base. The liquid collecting box is internally partitioned into a cold liquid cavity, a liquid pump mounting cavity and a hot liquid cavity. The shunt liquid collecting grooves are respectively arranged at both ends of the liquid discharge pipe. The shunt liquid collecting groove at one end is internally partitioned into a first cold liquid shunt groove and a second cold liquid shunt groove, and the shunt liquid collecting groove at the other end is internally partitioned into a first hot liquid shunt groove and a second hot liquid shunt groove. The liquid discharge pipe has a first backflow discharge pipe and a second backflow discharge pipe located at both sides of the liquid pump mounting cavity. The cold liquid in the first and second cold liquid shunt grooves respectively enters the cold liquid cavity, flows through the heat dissipation base, absorbs the heat of the heat dissipation base to become hot liquid, is sucked by the liquid pump into the liquid pump mounting cavity, then enters the hot liquid cavity, and then flows to the first and second hot liquid shunt grooves respectively, and the hot liquid is cooled and backflowed to the first and second cold liquid shunt grooves through the first and second backflow discharge pipes respectively, and a double-sided circulation is formed. In this way, the liquid flow balance and stability can be improved, and the heat dissipation effect is better.

[0083] Secondly, the cold liquid cavity, the liquid pump mounting cavity and the hot liquid cavity in the liquid collecting box are provided, and the cold liquid flow channel and the hot liquid flow channel of the liquid cooling head are provided, which cleverly form the cold liquid entering the cold liquid cavity, then flowing through the cold liquid flow channel and the liquid partition cover, flowing through the heat dissipation base, then flowing out from the hot liquid outlet of the liquid partition cover, then entering the hot liquid flow channel, and then entering the hot liquid cavity. The cold liquid outlet of the cold liquid cavity is arranged with a left-right spacing to correspond to the regions where the first and second cold liquid discharge pipe groups are located, which is beneficial to evenly shunt the cold liquid. At the same time, the liquid collecting box, the liquid partition cover and the heat dissipation base are all made of heat dissipation metal material. In this way, on the one hand, the liquid flow balance and stability are further improved, and on the other hand, the tortuous flow channel and the flow direction design enable the liquid to be effectively and fully cooled and dissipated, further improving the heat dissipation effect.

[0084] Furthermore, the liquid cooling radiator of the present application has better applicability because: the liquid leakage prevention effect is good, can meet the high requirement of liquid leakage prevention, the structure is compact, the whole radiator is modularly designed, and the occupied space is reduced;

[0085] In addition, by protruding a liquid blocking boss on one side of the inner circumferential side wall of the liquid pump installation cavity corresponding to the liquid outlet hole, and recessing a flow guide groove on the other side corresponding to the liquid outlet hole, a good flow guide effect is achieved, the smoothness is better, and the liquid pump working efficiency is improved.

Claims

1. A liquid cooling radiator for improving heat dissipation, characterized by: The application relates to a liquid cooling device, which comprises a liquid exhaust pipe, heat dissipation fins arranged on the liquid exhaust pipe, a shunt liquid collecting groove, a liquid collecting box, a liquid pump and a heat dissipation base. The liquid exhaust pipe is arranged around the liquid collecting box mounting cavity, the liquid collecting box is arranged in the liquid collecting box mounting cavity, the liquid collecting box is provided with a cold liquid cavity, a liquid pump mounting cavity and a hot liquid cavity, and the liquid pump is arranged in the liquid pump mounting cavity; and the heat dissipation base is arranged at the bottom of the liquid collecting box. The shunt liquid collecting grooves are arranged at the two ends of the liquid exhaust pipe, the shunt liquid collecting groove at one end is provided with a first cold liquid shunt groove and a second cold liquid shunt groove, and the shunt liquid collecting groove at the other end is provided with a first hot liquid shunt groove and a second hot liquid shunt groove; and the liquid exhaust pipe is provided with a first backflow exhaust pipe and a second backflow exhaust pipe which are located at the two sides of the liquid collecting box mounting cavity. The cold liquid in the first and second cold liquid shunt grooves enters the cold liquid cavity, then flows through the heat dissipation base together, absorbs the heat of the heat dissipation base to become hot liquid, is sucked into the liquid pump mounting cavity by the liquid pump, flows out of the liquid pump mounting cavity and enters the hot liquid cavity, and the hot liquid in the hot liquid cavity flows into the first and second hot liquid shunt grooves, the hot liquid in the first hot liquid shunt groove is cooled by the first backflow exhaust pipe to become cold liquid and flows back to the first cold liquid shunt groove, the hot liquid in the second hot liquid shunt groove is cooled by the second backflow exhaust pipe to become cold liquid and flows back to the second cold liquid shunt groove, and double-side circulation is formed.

2. The liquid cooling radiator with improved heat dissipation effect according to claim 1, characterized in that: The liquid cooling device further comprises a liquid cooling head, the liquid cooling head is arranged at the bottom of the liquid collecting box, and the heat dissipation base is arranged at the bottom of the liquid cooling head to contact a heat source.

3. The liquid cooling radiator with improved heat dissipation effect according to claim 2, characterized in that: The heat dissipation base is provided with a heat dissipation bottom plate and heat dissipation fins which are integrally connected to the heat dissipation bottom plate, a liquid separation cover is arranged above the heat dissipation bottom plate to cover the heat dissipation fins which are integrally connected to the heat dissipation bottom plate, a cold liquid input port is arranged on the liquid separation cover, and a hot liquid output port is arranged on the periphery of the liquid separation cover; a cold liquid output port is arranged at the bottom of the cold liquid cavity, and a hot liquid input port is arranged between the hot liquid cavity and the liquid pump mounting cavity. The liquid cooling head is provided with a cold liquid flow channel and a hot liquid flow channel. The cold liquid flows out of the cold liquid output port of the cold liquid cavity, flows into the cold liquid flow channel, flows into the liquid separation cover through the cold liquid input port of the liquid separation cover, exchanges heat with the heat dissipation base to become hot liquid, flows out of the hot liquid output port on the periphery of the liquid separation cover, enters the hot liquid flow channel, and then flows out of the hot liquid flow channel and enters the liquid pump mounting cavity.

4. The liquid cooling radiator with improved heat dissipation effect according to claim 3, characterized in that: The cold liquid output port of the cold liquid cavity is provided with two left and right spacing cold liquid output ports to correspond to the first and second cold liquid exhaust pipe groups; the inlet of the cold liquid flow channel is provided with two cold liquid flow channel inlets corresponding to the cold liquid output ports of the cold liquid cavity, the cold liquid flow channel extends from the inlet to two flow channel branches, the two flow channel branches converge and then extend to the outlet of the cold liquid flow channel, and the outlet of the cold liquid flow channel corresponds to the upper side of the cold liquid input port of the liquid separation cover. The inlet of the hot liquid flow channel corresponds to the upper side of the periphery of the liquid separation cover, the outlet of the hot liquid flow channel is arranged below the liquid pump, the hot liquid flow channel extends upwards from the inlet and extends to above the top of the liquid separation cover, and then extends to below the liquid pump, and the liquid is pumped out of the side of the liquid pump mounting cavity to the hot liquid cavity.

5. The liquid cooling radiator with improved heat dissipation effect according to claim 2, characterized in that: The liquid cooling head and the heat dissipation base are sequentially stacked at the bottom of the liquid collecting box, the bottom of the liquid collecting box is concavely provided with an internally threaded hole with a blind end at the upper end, and the heat dissipation base, the liquid cooling head and the internally threaded hole are threadedly connected through a screw.

6. The liquid cooling radiator with improved heat dissipation effect according to claim 3, characterized in that: The liquid collecting box comprises a box body and a box cover assembled on the box body; the box body is separated into a cold liquid cavity, a liquid pump mounting cavity and a hot liquid cavity by a liquid separation sheet; the box cover protrudes into the box body, and correspondingly, the liquid pump mounting cavity is concavely formed from the top of the box cover.

7. The liquid cooling radiator with improved heat dissipation effect according to claim 1 or 6, characterized in that: The bottom of the liquid pump mounting cavity is centrally provided with an inlet hole, and the circumferential side of the liquid pump mounting cavity is provided with an outlet hole; a liquid blocking boss is protrudingly arranged on one side of the inner circumferential wall of the liquid pump mounting cavity corresponding to the outlet hole, and a flow guiding groove is concavely arranged on the other side corresponding to the outlet hole; the liquid blocking boss is gradually thinned along the circumferential direction of the impeller, and the flow guiding groove is gradually deepened along the circumferential direction of the impeller and penetrates the outlet hole.

8. The liquid cooling radiator with improved heat dissipation effect according to claim 1, characterized in that: The shunt liquid collecting groove at one end is provided with a first liquid injection port corresponding to the first or second cold liquid shunt groove, and correspondingly, the shunt liquid collecting groove at the other end is provided with a second liquid injection port corresponding to the second or first hot liquid shunt groove.

9. The liquid cooling radiator of claim 8, wherein: The inner wall surface of the shunt liquid collecting groove is integrally formed with a convex part having a liquid injection port; the liquid injection port comprises an internally threaded hole and a stepped hole for accommodating a cap part and a second liquid leakage prevention sealing ring, the internally threaded hole is connected to the inside of the liquid collecting box, and the stepped hole is connected between the internally threaded hole and the outside of the liquid collecting box; Further comprising a liquid injection port sealing screw and a second liquid leakage prevention sealing ring, the second liquid leakage prevention sealing ring is located between the cap part of the screw and the inner end surface of the stepped hole, the liquid injection port sealing screw is screwed into the internally threaded hole, when the liquid injection port sealing screw is locked, the cap part extrudes the second liquid leakage prevention sealing ring to make it deformed and clamped between the cap part and the inner end surface of the stepped hole, achieving leakage prevention.

10. The liquid cooling radiator of claim 9, wherein: The stepped hole comprises a first stepped hole and a second stepped hole arranged in sequence from the outside to the inside and penetrating through, the first stepped hole is larger than the second stepped hole; the second liquid leakage prevention sealing ring is located in the second stepped hole, before the second liquid leakage prevention sealing ring is extruded by the cap part, the thickness of the second liquid leakage prevention sealing ring is higher than the first stepped surface of the first stepped hole, when the liquid injection port sealing screw is locked, the cap part extrudes the second liquid leakage prevention sealing ring until the cap part abuts against the first stepped surface, making the second liquid leakage prevention sealing ring deformed and filled in the second stepped hole, achieving leakage prevention.

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