CN210181547U

CN210181547U - Water-cooling radiator

Info

Publication number: CN210181547U
Application number: CN201921243122.8U
Authority: CN
Inventors: Yinhui Huang; 黄银辉
Original assignee: SHENZHEN WANJINGHUA TECHNOLOGY Co Ltd
Current assignee: SHENZHEN WANJINGHUA TECHNOLOGY Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-03-24
Anticipated expiration: 2029-07-31

Abstract

The utility model belongs to the technical field of the computer heat dissipation, especially, relate to a water-cooling radiator. The water-cooled radiator comprises radiating water discharge and a water pump, wherein the radiating water discharge comprises an upper water chamber, a lower water chamber and a plurality of radiating pipes, the upper water chamber is provided with a first cavity and a second cavity which are mutually independent, a water inlet joint is arranged on the first cavity, and a water outlet hole is formed in the upper surface of the second cavity; the water pump includes water pump shell and drive main part, has seted up the inlet opening on the diapire of water pump shell, is provided with water connectors on the lateral wall of water pump shell, and the water pump is installed in the upper surface and the inlet opening of second cavity and is set up in the top of apopore. So, need not to set up the pipeline between water pump and the last hydroecium and link to each other, water pump shell direct mount on the second cavity of last hydroecium can, the water pump integration sets up on the row of heat dissipation is log raft, is favorable to realizing water-cooling radiator's miniaturized design, and water pump and heat dissipation log raft fixed connection in an organic whole, only need during the installation fixed heat dissipation log raft can, the dismouting operation is simpler.

Description

Water-cooling radiator

Technical Field

The utility model belongs to the technical field of the computer heat dissipation, especially, relate to a water-cooling radiator.

Background

In a heat dissipation system of a computer, water cooling is one of common heat sinks, and heat is absorbed by using water circulation flow so as to dissipate heat.

Generally, a water-cooled radiator includes a radiating water drain that provides a heat transfer liquid circulation path and a water pump for driving a heat transfer liquid to circulate in the radiating water drain. In the prior art, the water pump is usually disposed separately from the heat dissipation water, that is, the water pump is connected to the heat dissipation water through a pipeline, so as to drive the heat conduction liquid in the heat dissipation water to flow circularly. However, in the split structure design, enough large space needs to be reserved in the computer case for installing the heat dissipation water discharge, the water pump and the pipeline respectively, the water-cooled radiator occupies a large space, and the water pump and the heat dissipation water discharge are separately assembled and disassembled, so that the assembly operation is complex and the maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water-cooling radiator aims at solving the water-cooling radiator occupation space among the prior art big, the loaded down with trivial details technical problem of dismouting.

In order to achieve the above object, the utility model adopts the following technical scheme: a water-cooled radiator comprises radiating water discharge and a water pump, wherein the radiating water discharge comprises an upper water chamber, a lower water chamber and a plurality of radiating pipes communicated with the upper water chamber and the lower water chamber, the upper water chamber is provided with a first cavity and a second cavity which are mutually independent, a water inlet joint for heat-conducting liquid to flow in is arranged on the first cavity, and a water outlet hole for heat-conducting liquid to flow out is formed in the upper surface of the second cavity, which is far away from the radiating pipes; the water pump includes the water pump shell and installs the drive main part in the water pump shell, offers the inlet opening that is used for supplying heat conduction liquid to flow in on the diapire of water pump shell, is provided with the water connectors who is linked together with the inlet opening and is used for supplying heat conduction liquid to flow out on the lateral wall of water pump shell, and the water pump is installed in the upper surface of second cavity and the inlet opening sets up in the top of apopore.

Further, the volume of the first chamber is larger than the volume of the second chamber.

Furthermore, the water pump shell comprises a shell support, a bottom shell fixed at the bottom of the shell support and a diversion chamber accommodated in the shell support, the bottom shell is fixedly installed on the upper surface of the second cavity, the water inlet hole is formed in the center of the bottom shell, the water inlet end of the diversion chamber is abutted against the outer periphery of the water inlet hole, the impeller of the driving main body is accommodated in the diversion chamber, and the axis of the impeller coincides with the center line of the water inlet hole.

Further, a sealing ring is arranged between the end face of the water inlet end of the water diversion chamber and the bottom shell.

Furthermore, a positioning notch is respectively formed in two opposite side portions of the bottom shell, a positioning protrusion matched with the positioning notch is convexly arranged at a position, corresponding to the positioning notch, of the upper surface of the second cavity, and the positioning protrusion is clamped with the corresponding positioning notch so that the bottom shell is positioned and installed on the upper surface of the second cavity.

The radiating water discharge device further comprises an upper water baffle plate and a lower water baffle plate, wherein the upper water baffle plate is arranged between the upper water chamber and the radiating pipes, water feeding through holes are formed in positions of the upper water baffle plate corresponding to the radiating pipes, and the upper water chamber is communicated with the radiating pipes through the water feeding through holes; the lower water baffle is arranged between the lower water chamber and the radiating pipes, the lower water baffle is provided with lower water through holes at positions corresponding to the radiating pipes, and the lower water chamber is communicated with the radiating pipes through the lower water through holes.

Furthermore, a partition plate for partitioning the first cavity and the second cavity is arranged in the upper water chamber, and the four peripheral side parts of the partition plate are respectively connected with the inner wall of the upper water chamber and the upper water baffle plate in a sealing manner.

Furthermore, a water injection hole is formed in the position, avoiding the water inlet joint, of the first cavity.

Furthermore, the radiating pipes are arranged in parallel at intervals, a radiating gap is formed between every two adjacent radiating pipes, a plurality of radiating fins which are uniformly distributed along the length direction of the radiating pipes are arranged in the radiating gap, and the radiating fins in the same radiating gap are arranged at an angle to form a plurality of ventilation holes.

Furthermore, the cooling water drainage also comprises two side plates which are oppositely arranged and fixedly connected between the upper water chamber and the lower water chamber, a plurality of mounting holes used for connecting the cooling fan and the case are formed in the side plates, and the cooling pipe is clamped between the two side plates.

The utility model has the advantages that: the utility model discloses a water-cooling radiator, be provided with first cavity and the second cavity of mutual independence in its upper water chamber, be equipped with the water supply connector that is used for supplying the heat conduction liquid to flow in on the first cavity, the apopore that is used for supplying the heat conduction liquid to flow is offered to the upper surface of second cavity, the water pump is installed on the upper surface of second cavity, and, the inlet opening has been seted up on the diapire of the water pump shell, when the water pump is installed on the upper portion of second cavity, the inlet opening sets up in the top of the apopore of second cavity, thus, heat conduction liquid in the cooling tube gets into the second cavity alright loop through apopore and inlet opening and is pumped to water supply connector department by the water. Need not to set up the pipeline between water pump and the last hydroecium and link to each other, water pump shell direct mount on the second cavity of last hydroecium can, the water pump integration sets up on the row of heat dissipation log raft, is favorable to realizing water-cooling radiator's miniaturized design, and water pump and heat dissipation log raft fixed connection in an organic whole, only need during the installation fixed heat dissipation log raft can, water-cooling radiator's dismouting operation is simpler.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a water-cooled heat sink according to an embodiment of the present invention;

fig. 2 is an exploded view of a water-cooled heat sink according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a water-cooled heat sink according to an embodiment of the present invention;

fig. 4 is a partially exploded view of a water-cooled heat sink according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-radiating water discharge 11-upper water chamber 12-lower water chamber

13-radiating pipe 14-water feeding baffle 15-water discharging baffle

16-side plate 20-water pump 21-water pump shell

22-drive body 23-sealing ring 111-first chamber

112-second chamber 113-water inlet joint 114-water outlet

115-division plate 116-water injection hole 131-heat dissipation gap

132-radiating fins 133-vent 141-water-feeding through hole

151-lower water through hole 161-mounting hole 211-bottom shell

212-water inlet hole 213-water outlet joint 214-shell support

215-diversion chamber 221-impeller 1121-positioning projection

2111, a stud 2112, a positioning notch 2141, a connecting long hole

2142-fastening means.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-4 are exemplary and intended to be used to illustrate the invention, but should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-4, an embodiment of the present invention provides a water-cooled heat sink, which is suitable for water-cooled heat dissipation of a computer host. Specifically, as shown in fig. 1, fig. 2 and fig. 4, the water-cooled heat sink includes a heat dissipating water drainer 10 for circularly flowing and absorbing heat of heat conducting liquid and a water pump 20 for driving the heat conducting liquid to circularly flow in the heat dissipating water drainer 10, wherein the heat dissipating water drainer 10 includes an upper water chamber 11, a lower water chamber 12 and a plurality of heat dissipating pipes 13 for communicating the upper water chamber 11 and the lower water chamber 12, the upper water chamber 11 has a first chamber 111 and a second chamber 112 which are independent of each other, a water inlet joint 113 for flowing in the heat conducting liquid is disposed on the first chamber 111, and a water outlet hole 114 for flowing out the heat conducting liquid is disposed on an upper surface of the second chamber 112 away from the heat dissipating; the water pump 20 includes a water pump housing 21 and a driving body 22 installed in the water pump housing 21, a water inlet 212 for allowing heat-conducting liquid to flow in is provided on the bottom wall of the water pump housing 21, a water outlet joint 213 communicated with the water inlet 212 and used for allowing heat-conducting liquid to flow out is provided on the side wall of the water pump housing 21, the water pump 20 is installed on the upper surface of the second chamber 112 and the water inlet 212 is disposed above the water outlet 114, and the heat-conducting liquid flowing into the second chamber 112 is pumped to be discharged through the water outlet joint 213 by the water pump 20 after entering the water pump housing 21 through the water outlet 114 and the water inlet 212. In this embodiment, the first chamber 111 and the second chamber 112 are independent from each other, that is, the first chamber 111 and the second chamber 112 are not directly communicated with each other but are only communicated with each other by the water flow of the heat conduction pipe, so that the heat conduction liquid in the upper water chamber 11 does not have a short flow phenomenon, and the heat conduction liquid that has just entered the upper water chamber 11 and has not undergone heat absorption by circulation is directly pumped out by the water pump 20.

The utility model discloses water-cooled radiator, be provided with first cavity 111 and second cavity 112 of mutually independent in its upper water chamber 11, be equipped with the water supply connector 113 that is used for supplying the heat conduction liquid to flow in on first cavity 111, the apopore 114 that is used for supplying the heat conduction liquid to flow out is offered to the upper surface of second cavity 112, water pump 20 installs on the upper surface of second cavity 112, and, inlet opening 212 has been seted up on the diapire of water pump housing 21, when water pump 20 installs in the upper portion of second cavity 112, inlet opening 212 sets up in the apopore 114 top of second cavity 112, so, heat conduction liquid that gets into in the second cavity 112 from cooling tube 13 alright loop through apopore 114 and inlet opening 212 and is pumped to water supply connector 213 department by water pump 20 and discharges. Need not to set up the pipeline between water pump 20 and the last hydroecium 11 and link to each other, water pump housing 21 direct mount on the second cavity 112 of last hydroecium 11 can, water pump 20 integration sets up on heat dissipation log raft 10, is favorable to realizing the miniaturized design of water-cooling radiator, and water pump 20 and heat dissipation log raft 10 fixed connection in an organic whole, only need during the installation fixed heat dissipation log raft 10 can, the dismouting operation of water-cooling radiator is simpler.

In another embodiment of the present invention, as shown in fig. 1 and 3, the volume of the first chamber 111 is larger than the volume of the second chamber 112. In this way, the amount of the heat-conducting liquid that can be contained in the first chamber 111 with a larger volume is larger than the amount that can be contained in the second chamber 112, so as to ensure that the first chamber 111 can store enough heat-conducting liquid to ensure that the heat-conducting liquid flows and absorbs heat all the time in each radiating pipe 13; the volume of the second chamber 112 is smaller than that of the first chamber 111, which on one hand reduces the overall volume of the chamber to vacate space for installing the water pump 20, and thus reduces the overall volume of the water-cooled heat sink of the present embodiment, and on the other hand, since the water pump 20 is directly communicated with the water outlet holes 114 of the second chamber 112 through the water inlet holes 212, the heat-conducting liquid can be rapidly and directly transferred from the second chamber 112 to the water pump housing 21, and the second chamber 112 with large volume is not required to be arranged for containing the heat-conducting liquid, so that the second chamber 112 only needs to provide a popular channel for the heat-conducting liquid.

In this embodiment, as shown in fig. 1 and 3, the first chamber 111 and the second chamber 112 are respectively disposed at the left and right sides of the upper water chamber 11, the upper surface of the first chamber 111 is protruded to meet the requirement of the volume, the upper surface of the second chamber 112 is disposed next to the heat dissipation pipe 13, and the second chamber 112 and the first chamber 111 are disposed in a step shape to form an installation space for installing the water pump 20, so that the water pump 20 can be installed by using the protruding space of the first chamber 111, and the structural arrangement is more reasonable and compact.

In another embodiment of the present invention, as shown in fig. 2 to 4, the water pump housing 21 includes a housing support 21, a bottom shell 211 fixed at the bottom of the housing support 21, and a water guiding chamber 215 accommodated inside the housing support 21, the bottom shell 211 is fixedly installed on the upper surface of the second chamber 112, the water inlet 212 is opened at the central position of the bottom shell 211, the water inlet end of the water guiding chamber 215 abuts against the outer peripheral edge of the water inlet 212, so that the heat-conducting liquid discharged through the water outlet 114 of the second chamber 112 enters the water guiding chamber 215, the impeller 221 of the driving main body 22 is accommodated in the water guiding chamber 215, and the axis of the impeller 221 coincides with the central line of the water inlet 212, as shown in fig. 3, so that the heat-conducting liquid enters the water guiding chamber 215 and is sucked by the rotation of the impeller 221, the suction load of the water pump 20 is reduced.

In this embodiment, as shown in fig. 3, preferably, the bottom shell 211 is directly attached and fixed on the upper surface of the second chamber 112, and the water inlet 212 of the bottom shell 211 is disposed opposite to the water outlet 114 of the second chamber 112, so that the water inlet 212 of the water pump housing 21 communicates with the water outlet 114 of the second chamber 112 at the shortest distance. In some embodiments, the bottom case 211 may be welded or adhesively fixed to the upper surface of the second chamber 112.

Specifically, as shown in fig. 4, four studs 2111 protrude from four corners of the bottom shell 211, the housing bracket 214 has long connecting holes 2141 at positions corresponding to the four studs 2111, and the housing bracket 214 is fastened to the bottom shell 211 by fasteners 2142 such as screws or bolts.

Further, in the present embodiment, the water pump 20 is preferably a centrifugal pump, and for the same delivery amount, since the impeller 221 of the centrifugal pump does not need to be submerged when the centrifugal pump is operated, the volume requirement of the introduction chamber is smaller, and thus, the structure of the centrifugal pump can be designed to be smaller and lighter, which is more beneficial to the miniaturization design of the water-cooled radiator of the present embodiment.

More closely, as shown in fig. 3 and 4, a sealing ring 23 is disposed between the end surface of the water inlet end of the water guide chamber 215 and the bottom shell 211 to further improve the sealing performance of the connection between the water guide chamber 215 and the second chamber 112, so as to prevent the heat-conducting liquid from flowing out of the water guide chamber 215; and, when the water pump 20 is a centrifugal pump, the sealing ring 23 is provided to meet the vacuum operation requirement of the centrifugal pump.

In another embodiment of the present invention, as shown in fig. 1 and fig. 4, a positioning notch 2112 is respectively disposed at two opposite side portions of the bottom case 211, a positioning protrusion 1121 matched with the positioning notch 2112 is convexly disposed at a position corresponding to the positioning notch 2112 on the upper surface of the second chamber 112, the positioning protrusion 1121 is connected to the corresponding positioning notch 2112 to fix the bottom case 211 to the upper surface of the second chamber 112, and the positioning protrusion 1121 and the positioning notch 2112 are connected to each other by a clamping fit to realize the positioning of the bottom case 211, and after the bottom case 211 is installed in place, the positioning protrusion 1121 can also limit the bottom case 211.

In another embodiment of the present invention, as shown in fig. 2 and 3, the heat dissipating water discharging device 10 further includes an upper water baffle 14 and a lower water baffle 15, the peripheral side portion of the upper water baffle 14 is connected to the inner wall of the upper water chamber 11 in a sealing manner, the upper water baffle 14 and the upper water chamber 11 form a cavity for storing heat conducting liquid, the peripheral side portion of the lower water baffle 15 is connected to the inner wall of the lower water chamber 12 in a sealing manner, and the lower water baffle 15 and the lower water chamber 12 form another cavity for flowing heat conducting liquid. The upper water baffle plate 14 is arranged between the upper water chamber 11 and the radiating pipes 13, upper water through holes 141 are formed in positions of the upper water baffle plate 14 corresponding to the radiating pipes 13, and the upper water chamber 11 is communicated with the radiating pipes 13 through the upper water through holes 141; the lower water baffle 15 is disposed between the lower water chamber 12 and the radiating pipes 13, the lower water baffle 15 has lower water passing holes 151 at positions corresponding to the radiating pipes 13, and the lower water chamber 12 is communicated with the radiating pipes 13 through the lower water passing holes 151. Specifically, in this embodiment, the popular paths of the heat-conducting liquid are: the water inlet joint 113 → the first chamber 111 → the upper water passing hole 141 → the heat pipe 13 → the lower water passing hole 151 → the lower water chamber 12 → the lower water passing hole 151 → the heat pipe 13 → the upper water passing hole 141 → the second chamber 112 → the water outlet hole 114 → the water inlet hole 212 → the water outlet joint 213, and thus the heat transfer liquid is installed in the passage to circulate for heat dissipation.

In this embodiment, the upper water chamber 11, the lower water chamber 12, the heat dissipation pipe 13 for communicating the upper water chamber 11 and the lower water chamber 12, and the upper water baffle 14 and the lower water baffle 15 are made of metal materials, so that the heat absorption and conduction capabilities are strong, and the whole heat dissipation effect is improved; moreover, the structures are welded together to ensure the connection stability of the structures.

In another embodiment of the present invention, as shown in fig. 2 and fig. 3, a partition plate 115 for separating the first chamber 111 and the second chamber 112 is disposed in the upper chamber 11, four sides of the partition plate 115 are respectively connected to the inner wall of the upper chamber 11 and the upper water baffle 14 in a sealing manner, the partition plate 115 is disposed to realize sealing isolation between the first chamber 111 and the second chamber 112, and it is ensured that the heat-conducting liquid in the first chamber 111 and the second chamber 112 does not directly circulate.

In another embodiment of the present invention, as shown in fig. 1 and 4, a water injection hole 116 is further opened at a position where the first chamber 111 is avoided from the water inlet joint 113, and the water injection hole 116 is communicated with the first chamber 111. Specifically, the water filling hole 116 is formed in the first chamber 111 of the upper chamber 11, and when the heat transfer liquid in the heat sink water 10 is excessively consumed, the heat transfer liquid may be replenished into the heat sink water 10 through the water filling hole 116.

In another embodiment of the present invention, as shown in fig. 2 and fig. 3, each heat dissipation tube 13 is spaced apart from each other and arranged in parallel, a heat dissipation gap 131 is formed between two adjacent heat dissipation tubes 13, a plurality of heat dissipation fins 132 are uniformly arranged along the length direction of the heat dissipation tube 13 in the heat dissipation gap 131, the heat dissipation fins 132 are arranged in the gap between the heat dissipation tubes 13 to increase the heat dissipation area of the heat dissipation water drainage 10, and each heat dissipation fin 132 in the same heat dissipation gap 131 is arranged at an angle to form a plurality of ventilation holes 133, and the shell performs air cooling heat dissipation during water cooling heat dissipation, thereby further increasing the heat dissipation effect.

In another embodiment of the present invention, as shown in fig. 1 and 4, the cooling water discharge device 10 further includes two side plates 16 disposed oppositely and fixedly connected between the upper water chamber 11 and the lower water chamber 12, a plurality of mounting holes 161 for connecting the cooling fan and the chassis are disposed on the side plates 16, and the cooling pipe 13 is clamped between the two side plates 16. Specifically, the side plate 16, while serving as an integral supporting structure of the radiator drain 10, is further provided with a plurality of mounting holes 161, such as threaded holes, for mounting a radiator fan, connecting with a chassis, and the like.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a water-cooling radiator, includes heat dissipation log raft and water pump, the heat dissipation log raft includes last hydroecium, lower header and intercommunication go up the hydroecium with a plurality of cooling tubes of lower header, its characterized in that:

the upper water chamber is provided with a first cavity and a second cavity which are mutually independent, the first cavity is provided with a water inlet joint for heat conduction liquid to flow in, and the upper surface of the second cavity, which is far away from the radiating pipe, is provided with a water outlet for heat conduction liquid to flow out;

the water pump includes the water pump shell and install in drive main part in the water pump shell, set up the inlet opening that is used for supplying heat conduction liquid to flow in on the diapire of water pump shell, be provided with on the lateral wall of water pump shell with the inlet opening is linked together and is used for supplying the water connectors that heat conduction liquid flows out, the water pump install in the upper surface of second cavity just the inlet opening set up in the top of apopore.

2. The water-cooled heat sink according to claim 1, wherein: the volume of the first chamber is greater than the volume of the second chamber.

3. The water-cooled heat sink according to claim 1, wherein: the water pump shell comprises a shell support, a bottom shell fixed to the bottom of the shell support and a diversion chamber accommodated in the shell support, the bottom shell is fixedly installed on the upper surface of the second cavity, the water inlet hole is formed in the central position of the bottom shell, the water inlet end of the diversion chamber is abutted against the outer peripheral edge of the water inlet hole, the impeller of the driving main body is accommodated in the diversion chamber, and the axis of the impeller coincides with the central line of the water inlet hole.

4. The water-cooled heat sink according to claim 3, wherein: and a sealing ring is arranged between the end surface of the water inlet end of the diversion chamber and the bottom shell.

5. The water-cooled heat sink according to claim 3, wherein: a positioning notch is respectively formed in two opposite side portions of the bottom shell, the upper surface of the second cavity corresponds to the position of the positioning notch, a positioning protrusion matched with the positioning notch is convexly arranged at the position, and the positioning protrusion is connected with the corresponding positioning notch in a clamping mode to enable the bottom shell to be installed on the upper surface of the second cavity in a positioning mode.

6. The water-cooled heat sink according to any one of claims 1 to 5, wherein: the radiating water drain also comprises an upper water baffle plate and a lower water baffle plate, the upper water baffle plate is arranged between the upper water chamber and the radiating pipes, water feeding through holes are formed in positions of the upper water baffle plate corresponding to the radiating pipes, and the upper water chamber is communicated with the radiating pipes through the water feeding through holes; the lower water baffle is arranged between the lower water chamber and the radiating pipes, lower water through holes are formed in positions of the lower water baffle corresponding to the radiating pipes, and the lower water chamber is communicated with the radiating pipes through the lower water through holes.

7. The water-cooled heat sink according to claim 6, wherein: the upper water chamber is internally provided with a partition plate for separating the first cavity from the second cavity, and the four peripheral side parts of the partition plate are respectively connected with the inner wall of the upper water chamber and the upper water baffle plate in a sealing manner.

8. The water-cooled heat sink according to any one of claims 1 to 5, wherein: the first cavity is provided with a water injection hole at the position where the water inlet joint is opened.

9. The water-cooled heat sink according to any one of claims 1 to 5, wherein: the radiating pipes are arranged in parallel at intervals, a radiating gap is formed between every two adjacent radiating pipes, a plurality of radiating fins which are uniformly distributed along the length direction of the radiating pipes are arranged in the radiating gap, and the radiating fins in the same radiating gap are arranged at an angle to form a plurality of ventilation holes.

10. The water-cooled heat sink according to any one of claims 1 to 5, wherein: the radiating water draining device further comprises two side plates which are oppositely arranged and fixedly connected between the upper water chamber and the lower water chamber, a plurality of mounting holes used for connecting a radiating fan and a case are formed in the side plates, and the radiating pipe is clamped between the two side plates.