CN214701376U

CN214701376U - Improved liquid cooling head, liquid cooling head assembly and liquid cooling radiator

Info

Publication number: CN214701376U
Application number: CN202120356922.1U
Authority: CN
Inventors: 黄崇贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-11-12
Anticipated expiration: 2031-02-09

Abstract

The utility model discloses an improved liquid cooling head, a liquid cooling head assembly and a liquid cooling radiator, wherein the improved liquid cooling head comprises a liquid collecting box and a heat conducting fin; the liquid collecting box is provided with a liquid inlet, a first liquid outlet, a second liquid outlet and a flow dividing channel; the liquid inlet end of the shunting channel is communicated with the liquid inlet, the liquid outlet end of the shunting channel is respectively provided with a first shunting port and a second shunting port, the heat conducting fins are hermetically fixed on the liquid collecting box and form a closed accommodating cavity with the liquid collecting box in a surrounding manner, and the heat conducting fins extend to form a plurality of fin parts positioned in the accommodating cavity; the first flow dividing port is communicated with the first liquid outlet through the accommodating cavity, and the second flow dividing port is communicated with the second liquid outlet; liquid enters the diversion channel through the liquid inlet, one part of the liquid enters the accommodating cavity through the first diversion port and flows out of the first liquid outlet after exchanging heat with the fin part, and the other part of the liquid flows out of the second liquid outlet through the second diversion port. Thereby, the pump is installed and is rocked because of the great, pump transmission production of weight on the liquid cooling head among the traditional art to and, inconvenient freely connect and establish the scheduling problem.

Description

Improved liquid cooling head, liquid cooling head assembly and liquid cooling radiator

Technical Field

The utility model relates to a radiator field technique especially indicates an improvement type liquid cooling head, liquid cooling head subassembly and liquid cooling radiator.

Background

At present, a radiator for radiating internal parts of a computer is generally a liquid cooling radiator, the liquid cooling radiator is a radiator which uses liquid to forcibly circulate under the drive of a pump to take away heat of the radiator, and compared with air cooling, the liquid cooling radiator has the advantages of being quiet, stable in cooling, small in dependence on the environment and the like. The heat dissipation performance of a liquid-cooled radiator is proportional to the flow rate of the cooling fluid (liquid or other liquid) therein, which in turn is related to the power of the liquid pump of the refrigeration system. And the heat capacity of the liquid is large, so that the liquid cooling refrigeration system has good heat load capacity.

The liquid cooling radiator generally comprises a liquid cooling bar, a liquid cooling head and a liquid pipe, wherein the liquid pipe is connected between the liquid cooling bar and the liquid cooling head, and the liquid cooling head comprises a shell, a pump arranged in the shell, and a liquid inlet and a liquid outlet which are positioned on the surface of the shell; in practical applications, it still has some disadvantages, such as: 1. the whole liquid cooling head is heavy, when the liquid cooling head is arranged and applied to a heating component, the required buckling pressure is large, the installation operation is labor-consuming and time-consuming, and the phenomenon of shaking is easy to occur after the liquid cooling head is arranged; 2. the whole liquid cooling head has larger volume, needs to be arranged corresponding to a heating component, occupies large space and is not beneficial to the design of the internal space of a computer product; 3. Usually, one liquid cooling bar is correspondingly provided with one liquid cooling head, so that the arrangement requirement of a plurality of liquid cooling heads of one liquid cooling bar is difficult to meet.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an improved liquid cooling head, a liquid cooling head assembly and a liquid cooling radiator, which solves the problems of the pump mounted on the liquid cooling head in the conventional art, such as large weight, shaking during the pump transmission, and inconvenient free connection.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an improved liquid cooling head comprises a liquid collecting box and a heat conducting fin;

the liquid collecting box is provided with a liquid inlet, a first liquid outlet, a second liquid outlet and a flow dividing channel positioned in the liquid collecting box; the liquid inlet end of the shunting channel is communicated with the liquid inlet, the liquid outlet end of the shunting channel is respectively provided with a first shunting port and a second shunting port, and the first shunting port and the second shunting port are both smaller than the liquid inlet and the shunting channel;

the heat conducting fin is hermetically fixed on the liquid collecting box and forms a closed accommodating cavity with the liquid collecting box, and a plurality of fin parts positioned in the accommodating cavity are integrally formed on the heat conducting fin;

the first flow dividing port is communicated with a first liquid outlet through the accommodating cavity, and the second flow dividing port is communicated with a second liquid outlet; liquid enters the diversion channel through the liquid inlet, one part of the liquid enters the accommodating cavity through the first diversion port and flows out of the first liquid outlet after exchanging heat with the fin part, and the other part of the liquid flows in through the second diversion port and flows out of the second liquid outlet.

As a preferred scheme, the liquid inlet and the second shunt port are respectively opposite to two ends of the shunt channel, and the first shunt port is positioned between the two ends of the shunt channel.

Preferably, the second branch port is communicated with the branch channel through a transition channel which is designed to be gradually reduced along the conveying direction.

As a preferable scheme, a liquid separation cover for covering the fin part is arranged in the accommodating cavity, the liquid separation cover separates the accommodating cavity into a first liquid inlet cavity and a first liquid outlet cavity, the first split flow port is communicated with the first liquid inlet cavity, the liquid separation cover is provided with a first slot hole communicated between the first liquid inlet cavity and the inside of the liquid separation cover, the circumferential side of the liquid separation cover is provided with a second slot hole communicated between the first liquid outlet cavity and the inside of the liquid separation cover, and the first liquid outlet cavity is communicated with the first liquid outlet;

or, the holding intracavity is provided with the spacer that covers fin portion, the spacer separates the holding chamber and forms second feed liquor chamber, second play liquid chamber, first reposition of redundant personnel mouth intercommunication second feed liquor chamber, the third slotted hole in intercommunication second feed liquor chamber and fin portion place region is seted up to the spacer, the first liquid outlet of second play liquid chamber intercommunication.

As a preferred scheme, the liquid inlet and the first liquid outlet are arranged on one side of the liquid collecting box, and the second liquid outlet is arranged on the other side of the liquid collecting box.

A liquid cooling head assembly comprises a first liquid cooling head and a second liquid cooling head; the first liquid cooling head is the improved liquid cooling head of any one of the above parts; the second liquid cooling head is provided with a liquid inlet connecting end and a liquid outlet connecting end, and a second liquid outlet of the first liquid cooling head is connected to the liquid inlet connecting end of the second liquid cooling head.

As a preferred scheme, the liquid inlet of the first liquid cooling head is connected with a liquid inlet pipe, the first liquid outlet of the first liquid cooling head is connected with a first liquid outlet pipe, the liquid outlet connecting end of the second liquid cooling head is connected with a second liquid outlet pipe, and the first liquid outlet pipe and the second liquid outlet pipe are collected and connected to a total liquid outlet pipe.

As a preferred scheme, the first liquid cooling heads are provided with a plurality of liquid cooling heads, and a second liquid outlet of an upper first liquid cooling head is connected to a liquid inlet of a lower first liquid cooling head between adjacent first liquid cooling heads.

A liquid cooling radiator comprises a liquid cooling row, a liquid cooling head, a connecting liquid pipe connected between the liquid cooling row and the liquid cooling head, and a pump driving liquid circulation; the liquid cooling head comprises the improved liquid cooling head, and the pump is arranged outside the liquid cooling head.

As a preferable scheme, the liquid cooling head comprises a first liquid cooling head and a second liquid cooling head; the second liquid cooling head is provided with a liquid inlet connecting end and a liquid outlet connecting end, a second liquid outlet of the first liquid cooling head is connected to the liquid inlet connecting end of the second liquid cooling head, a liquid inlet of the first liquid cooling head is connected with a liquid inlet pipe, a first liquid outlet of the first liquid cooling head is connected with a first liquid outlet pipe, a liquid outlet connecting end of the second liquid cooling head is connected with a second liquid outlet pipe, and the first liquid outlet pipe and the second liquid outlet pipe are connected to a total liquid outlet pipe in a gathering manner;

wherein: one first liquid cooling head is arranged;

or the first liquid cooling heads are provided with a plurality of liquid cooling heads, and the adjacent first liquid cooling heads are connected to the liquid inlet of the next first liquid cooling head through the second liquid outlet of the last first liquid cooling head.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, according to the technical scheme, the improved liquid cooling head is mainly characterized in that the improved liquid cooling head is provided with a first shunt port and a second shunt port at the liquid outlet end through the shunt channel, after liquid enters the shunt channel through the liquid inlet, a part of the liquid enters the accommodating cavity through the first shunt port and exchanges heat with the fin part and then flows out of the first liquid outlet, and the other part of the liquid flows out of the second liquid outlet through the second shunt port; therefore, a plurality of liquid cooling heads can be freely connected and arranged to meet the requirement of arranging the plurality of liquid cooling heads for heat dissipation;

the pump is arranged outside the liquid cooling head, so that the problems of large weight of the liquid cooling head and shaking generated during pump transmission in the traditional technology are solved, meanwhile, the overall height of the liquid cooling head is reduced, the occupied space is small, and the design of the internal space of a computer product is facilitated; on the other hand, the pump arrangement also becomes more flexible and can be placed anywhere outside, for example: liquid cooling rows, connecting liquid pipes and the like.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a perspective view of a second embodiment of the present invention;

FIG. 4 is an exploded view of a second embodiment of the present invention;

FIG. 5 is a perspective view of a liquid collecting box according to a second embodiment of the present invention;

FIG. 6 is a bottom view of the liquid collecting box according to the second embodiment of the present invention;

FIG. 7 is a sectional view A-A of FIG. 6;

fig. 8 is a perspective view of a liquid-cooled heat sink according to a second embodiment of the present invention;

FIG. 9 is a schematic view of the fluid flow direction of the first and second fluid cooling heads of the fluid-cooled heat sink of FIG. 8;

FIG. 10 is an exploded view of the first and second liquid cooling heads of the liquid-cooled heat sink of FIG. 8;

FIG. 11 is a cross-sectional view of a first liquid-cooled head and a second liquid-cooled head of the liquid-cooled heat sink of FIG. 8;

FIG. 12 is a schematic view of a combination of a first liquid cooling head and a second liquid cooling head;

fig. 13 is a view of the combined application of two first liquid-cooled heads and one second liquid-cooled head.

The attached drawings indicate the following:

liquid collecting box 1, heat conducting sheet 2, liquid inlet 11, first liquid outlet 12, second liquid outlet 13, diversion channel 14, first diversion port 15, second diversion port 16, liquid isolating cover 3, first sealing ring 4, second sealing ring 5, liquid isolating sheet 6, LED lamp panel 7, upper cover 8, first liquid cooling head 100, second liquid cooling head 200, liquid cooling row 300, pump 400, liquid inlet pipe 501, first liquid outlet pipe 502, second liquid outlet pipe 503, three-way joint 504, total liquid outlet pipe 505.

Detailed Description

Referring to fig. 1 to 13, specific structures of various embodiments of the present invention are shown.

Firstly, please refer to fig. 1 to 7, which illustrate an improved liquid cooling head in detail, which includes a liquid collecting box 1 and a heat conducting fin 2; wherein:

the liquid collecting box 1 is provided with a liquid inlet 11, a first liquid outlet 12, a second liquid outlet 13 and a flow dividing channel 14 positioned in the liquid collecting box 1; the liquid inlet end of the flow dividing channel 14 is communicated with the liquid inlet 11, the liquid outlet end of the flow dividing channel 14 is respectively provided with a first flow dividing port 15 and a second flow dividing port 16, and the first flow dividing port 15 and the second flow dividing port 16 are both smaller than the liquid inlet 11 and the flow dividing channel 14;

the heat conducting fin 2 is hermetically fixed on the liquid collecting box 1 and forms a closed accommodating cavity with the liquid collecting box, and a plurality of fin parts positioned in the accommodating cavity are integrally formed on the heat conducting fin 2; when manufacturing, the heat conducting fin 2 and the fin part are integrally formed.

The first flow dividing port 15 is communicated with the first liquid outlet 12 through the accommodating cavity, and the second flow dividing port 16 is communicated with the second liquid outlet 13; the liquid enters the diversion channel 14 through the liquid inlet 11, a part of the liquid enters the accommodating cavity through the first diversion port 15 to exchange heat with the fin part and then flows out of the first liquid outlet 12, and the other part of the liquid flows in through the second diversion port 16 and flows out of the second liquid outlet 13. Preferably, the liquid inlet 11 and the first liquid outlet 12 are arranged at one side of the liquid collecting box 1, and the second liquid outlet 13 is arranged at the other side of the liquid collecting box 1.

Specifically, the method comprises the following steps: the liquid inlet 11 and the second shunt port 16 are respectively opposite to two ends of the shunt channel 14, and the first shunt port 15 is positioned between two ends of the shunt channel 14; through the transition channel intercommunication of design that diminishes along direction of delivery between second reposition of redundant personnel mouth 16 and the reposition of redundant personnel passageway 14 for certain resistance is formed when liquid shunts towards second reposition of redundant personnel mouth 16, and like this, liquid can shunt betterly, avoids the situation that liquid was carried from first reposition of redundant personnel mouth 15 or second reposition of redundant personnel mouth 16 in a large number, gives consideration to the delivery capacity of first reposition of redundant personnel mouth 15, second reposition of redundant personnel mouth 16. As can be seen from FIG. 7, the liquid inlet 11 and the liquid inlet end of the branch channel 14 are communicated through a transition channel which is gradually designed to be smaller along the conveying direction, so that the liquid entering the liquid collecting box 1 is gathered and the pressure is increased.

With reference to fig. 4 to 7 and fig. 11, a liquid-blocking cover 3 covering the fin portion is disposed in the accommodating cavity, the liquid-blocking cover 3 divides the accommodating cavity into a first liquid inlet cavity and a first liquid outlet cavity, the first branch port 15 is communicated with the first liquid inlet cavity, the liquid-blocking cover 3 is provided with a first slot hole communicating the first liquid inlet cavity and the inside of the liquid-blocking cover 3, a second slot hole communicating the first liquid outlet cavity and the inside of the liquid-blocking cover 3 is disposed on the circumferential side of the liquid-blocking cover 3, and the first liquid outlet cavity is communicated with the first liquid outlet 12; so, cold liquid gets into from first slotted hole and separates the inside back equipartition of liquid cover 3 on the fin portion, and the contact is abundant, then flows out from the second slotted hole for cold liquid obtains effectual drainage, avoids cold liquid and hydrothermal solution to mix together, thereby make full use of cold liquid carries out thermal absorption, has improved the radiating effect greatly.

In this embodiment, the heat conducting strip 2 has a square outline, the heat conducting strip 2 is made of copper material or aluminum material, the heat conducting strip 2 made of copper material has better heat dissipation effect, the bottom surface is a plane, the heat conducting strip 2 is fixed at the bottom of the liquid collecting box 1 through a plurality of screws (not shown), a plurality of fixing holes are formed at the periphery of the heat conducting strip 2, a plurality of screw holes are formed at the periphery of the bottom of the liquid collecting box 1, and the plurality of screws penetrate through the corresponding fixing holes and are screwed with the corresponding screw holes for fixed connection.

The liquid separation cover 3 is made of metal or plastic and is square, a groove is concavely formed in the center of the surface of the liquid separation cover 3, a plurality of first slotted holes are formed in the bottom surface of the groove at intervals, so that cold liquid enters the liquid separation cover 3 and is more uniformly distributed on the fin part, the cold liquid is more effectively utilized, and the heat dissipation effect is improved; a first sealing ring 4 is arranged between the heat conducting sheet 2 and the liquid collecting box 1 in a clamping mode, and a second sealing ring 5 is arranged between the periphery of the upper surface of the liquid isolating cover 3 and the liquid collecting box 1 in a clamping mode. The first seal ring 4 is square, and the second seal ring 5 is circular. When in actual design and manufacture, the position of the second slotted hole can be lowered as much as possible by adjusting the mounting position of the liquid separation cover 3, namely, the liquid outlet position of the second slotted hole is lowered as much as possible, and the heat dissipation effect is improved.

As shown in fig. 2, as an alternative, a liquid-separating sheet 6 covering the fin portion may be disposed in the accommodating cavity, the liquid-separating sheet 6 separates the accommodating cavity into a second liquid inlet cavity and a second liquid outlet cavity, the first branch port 15 is communicated with the second liquid inlet cavity, the liquid-separating sheet 6 is provided with a third slot hole communicating the second liquid inlet cavity and the region where the fin portion is located, and the second liquid outlet cavity is communicated with the first liquid outlet 12.

As shown in fig. 3 and 4, an LED lamp panel 7 can be further disposed on the top of the liquid collecting box 1, an upper cover 8 is additionally disposed on the LED lamp panel 7, and the surface of the upper cover 8 can be selectively designed as a decoration. Comparing fig. 1 and fig. 3, it can be seen that, in comparison, after the components such as the LED lamp panel 7 and the upper cover 8 are arranged on the top of the liquid collecting box 1, the overall height of the liquid collecting box is slightly larger. However, compare the liquid cold junction of built-in pump among the conventional art, the utility model discloses a liquid cold junction's whole height dimension dwindles by a wide margin.

As shown in fig. 8 to 13, a liquid cooling head assembly is provided, which comprises a first liquid cooling head 100 and a second liquid cooling head 200; the first liquid cooling head 100 is the improved liquid cooling head; the second liquid cooling head 200 has a liquid inlet connection end and a liquid outlet connection end, and the second liquid outlet 13 of the first liquid cooling head 100 is connected to the liquid inlet connection end of the second liquid cooling head 200. The liquid inlet 11 of the first liquid cooling head 100 is connected with a liquid inlet pipe, the first liquid outlet 12 of the first liquid cooling head 100 is connected with a first liquid outlet pipe, the liquid outlet connecting end of the second liquid cooling head 200 is connected with a second liquid outlet pipe, and the first liquid outlet pipe and the second liquid outlet pipe are collected and connected to a total liquid outlet pipe.

The first liquid cooling head 100 may be provided with one or a plurality of liquid cooling heads, and when the first liquid cooling head 100 is provided with a plurality of liquid cooling heads, the liquid cooling heads are connected between adjacent first liquid cooling heads 100 through the second liquid outlet 13 of the last first liquid cooling head 100 to the liquid inlet 11 of the next first liquid cooling head 100.

Then, a liquid-cooled radiator is provided, which comprises a liquid-cooled row 300, a liquid-cooled head, a connecting liquid pipe connected between the liquid-cooled row 300 and the liquid-cooled head, and a pump for driving liquid circulation; the liquid cooling head comprises the improved liquid cooling head, and the pump is arranged outside the liquid cooling head. The pump 400 is flexible and can be placed anywhere outside, for example: liquid cooling row 300, connecting liquid pipe, etc. The liquid cooling head assembly can be applied to the liquid cooling radiator.

Referring to fig. 8 and 11, the working principle of the liquid-cooled heat sink is described as follows:

when the liquid cooling device is used, the heat conducting fins 2 of the first liquid cooling head 100 and the second liquid cooling head 200 are respectively attached and fixed with the heating element, liquid of the liquid cooling bar 300 enters the flow dividing channel 14 from the liquid inlet pipe 501 through the liquid inlet 11 of the first liquid cooling head 100, a part of liquid enters the accommodating cavity through the first flow dividing port 15 and exchanges heat with the fin part and then flows out from the first liquid outlet 12 through the first liquid outlet 502, the other part of liquid flows in through the second flow dividing port 16 and flows out from the second liquid outlet 13 and enters the second liquid cooling head 200 and then flows out through the second liquid outlet 503 of the second liquid cooling head 200, and the first liquid outlet pipe 502 and the second liquid outlet 503 are connected to the main liquid outlet pipe 505 through the three-way joint 504 and then enter the liquid cooling bar 300 to be cooled so as to be recycled.

The design of the utility model is mainly characterized in that the structure design of the improved liquid cooling head is adopted, the liquid outlet end of the flow dividing channel is respectively provided with a first flow dividing port and a second flow dividing port, after liquid enters the flow dividing channel through the liquid inlet, a part of the liquid enters the accommodating cavity through the first flow dividing port and flows out of the first liquid outlet after exchanging heat with the fin part, and the other part of the liquid flows out of the second liquid outlet through the second flow dividing port; therefore, a plurality of liquid cooling heads can be freely connected and arranged to meet the requirement of arranging the plurality of liquid cooling heads for heat dissipation;

still, set up the pump in the outside of liquid cooling head, solved in the traditional art on the one hand the weight of liquid cooling head great, the pump produces the problem of rocking when transmitting, simultaneously, the whole height of liquid cooling head reduces, and occupation space is little, is favorable to the design of computer product inner space, and on the other hand, the setting of pump also becomes more nimble freedom, can arrange in any place in addition, for example: liquid cooling rows, connecting liquid pipes and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. An improvement type liquid cooling head which characterized in that: comprises a liquid collecting box and a heat conducting fin;

2. An improved liquid cooling head as claimed in claim 1, wherein: the liquid inlet and the second shunt port are respectively opposite to two ends of the shunt channel, and the first shunt port is located between two ends of the shunt channel.

3. An improved liquid cooling head as claimed in claim 1 or 2, characterized in that: the second diversion port is communicated with the diversion channel through a transition channel which is designed to be gradually reduced along the conveying direction.

4. An improved liquid cooling head as claimed in claim 1, wherein: a liquid separation cover which covers the fin part is arranged in the containing cavity, the containing cavity is separated by the liquid separation cover to form a first liquid inlet cavity and a first liquid outlet cavity, the first flow dividing port is communicated with the first liquid inlet cavity, the liquid separation cover is provided with a first slotted hole which is communicated between the first liquid inlet cavity and the interior of the liquid separation cover, the peripheral side of the liquid separation cover is provided with a second slotted hole which is communicated between the first liquid outlet cavity and the interior of the liquid separation cover, and the first liquid outlet cavity is communicated with a first liquid outlet;

5. An improved liquid cooling head as claimed in claim 1, wherein: the liquid inlet and the first liquid outlet are arranged on one side of the liquid collecting box, and the second liquid outlet is arranged on the other side of the liquid collecting box.

6. A liquid cooling head assembly, comprising: comprises a first liquid cooling head and a second liquid cooling head; the first liquid cooling head is the improved liquid cooling head of any one of claims 1 to 5; the second liquid cooling head is provided with a liquid inlet connecting end and a liquid outlet connecting end, and a second liquid outlet of the first liquid cooling head is connected to the liquid inlet connecting end of the second liquid cooling head.

7. The liquid-cooled head assembly of claim 6, wherein: the liquid inlet of first liquid cold head is connected with the feed liquor pipe, the first liquid outlet of first liquid cold head is connected with first drain pipe, the play liquid connection end of second liquid cold head is connected with the second drain pipe, first drain pipe, second drain pipe collect and are connected to total drain pipe.

8. The liquid-cooled head assembly of claim 6, wherein: the first liquid cooling heads are provided with a plurality of liquid cooling heads, and a second liquid outlet of the adjacent first liquid cooling heads is connected to a liquid inlet of the next first liquid cooling head through a second liquid outlet of the last first liquid cooling head.

9. A liquid cooling radiator is characterized in that: the device comprises a liquid cooling row, a liquid cooling head, a connecting liquid pipe connected between the liquid cooling row and the liquid cooling head, and a pump driving liquid circulation; the liquid cooling head comprises the improved liquid cooling head as claimed in any one of claims 1 to 5, and the pump is arranged outside the liquid cooling head.

10. The liquid-cooled heat sink of claim 9, wherein: the liquid cooling head comprises a first liquid cooling head and a second liquid cooling head; the second liquid cooling head is provided with a liquid inlet connecting end and a liquid outlet connecting end, a second liquid outlet of the first liquid cooling head is connected to the liquid inlet connecting end of the second liquid cooling head, a liquid inlet of the first liquid cooling head is connected with a liquid inlet pipe, a first liquid outlet of the first liquid cooling head is connected with a first liquid outlet pipe, a liquid outlet connecting end of the second liquid cooling head is connected with a second liquid outlet pipe, and the first liquid outlet pipe and the second liquid outlet pipe are connected to a total liquid outlet pipe in a gathering manner;

wherein: one first liquid cooling head is arranged;