CN111918520B

CN111918520B - Heat sink and heat radiator

Info

Publication number: CN111918520B
Application number: CN201910381738.XA
Authority: CN
Inventors: 王超; 周腾飞; 贾晖
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2022-02-18
Anticipated expiration: 2039-05-08
Also published as: CN111918520A

Abstract

The embodiment of the application discloses fin and radiator belongs to the technical field of heat dissipation. This fin includes base and lid, wherein: the cover body is provided with a liquid inlet, a liquid outlet and a diversion trench, and the liquid inlet is communicated with the diversion trench; the base comprises a splitter box and a plurality of radiating teeth positioned on two sides of the splitter box, radiating channels are formed between adjacent radiating teeth, and each radiating channel is respectively communicated with the splitter box; the cover body is arranged on the base, the notch of the diversion trench is positioned in the diversion trench, and the edge of the notch of the diversion trench is lower than the edge of the top of the heat dissipation tooth; a confluence channel is formed between the base and the cover body and is communicated with the heat dissipation channel and the liquid outlet; the surface of the base, which faces away from the heat dissipation teeth, is used for contacting with the heat source piece. By adopting the method and the device, the heat dissipation effect on the chip can be enhanced.

Description

Heat sink and heat radiator

Technical Field

The application relates to the technical field of heat dissipation, in particular to a heat dissipation sheet and a heat radiator.

Background

The equipment in the machine room can generate more heat during working, and a heat dissipation system is needed to dissipate the heat of the equipment so as to maintain the normal work of the equipment.

In the related art, in order to further dissipate heat of devices with high power consumption, a heat sink is usually installed at a chip position of the devices, and the heat sink mainly includes a fan, and the fan forces convection to dissipate heat for the chip.

In the course of implementing the present application, the inventors found that the related art has at least the following problems:

the equipment is more in the computer lab, and the heat that produces is also more, and is corresponding, and the temperature of the air in the environment is also higher, even improve the mobility of chip position department air, nevertheless still relatively poor to the radiating effect of chip.

Disclosure of Invention

In order to solve the problems in the related art, embodiments of the present application provide a heat sink and a heat sink. The technical scheme is as follows:

in a first aspect, a heat sink is provided, wherein the heat sink includes a base 1 and a cover 2, wherein: the cover body 2 is provided with a liquid inlet 21, a liquid outlet 22 and a diversion trench 23, and the liquid inlet 21 is communicated with the diversion trench 23; the base 1 comprises a splitter box 11 and a plurality of radiating teeth 12 positioned on two sides of the splitter box 11, radiating channels 13 are formed between adjacent radiating teeth 12, and each radiating channel 13 is respectively communicated with the splitter box 11; the cover body 2 is arranged on the base 1, the notch of the diversion trench 23 is positioned in the diversion trench 11, and the edge of the notch of the diversion trench 23 is lower than the top edge of the heat dissipation teeth 12; a confluence channel 3 is formed between the base 1 and the cover body 2, and the confluence channel 3 is communicated with the heat dissipation channel 13 and the liquid outlet 22; the surface of the base 1 facing away from the heat dissipation teeth 12 is used to contact a heat source.

The heat sink may also be referred to as a cold plate, and is a cold plate of a liquid-cooled heat sink, and in application, the heat sink contacts a heat source device, and the heat source device is a component that generates a large amount of heat, for example, the heat source device may be a chip of an apparatus.

According to the scheme shown in the embodiment of the application, after the cover body 2 and the base 1 are fixed, a containing chamber can be formed between the cover body 2 and the base 1, so that the heat dissipation teeth arranged on the base 1 can be contained in the containing chamber. The base 1 may include a dividing channel 11 and a plurality of heat dissipation teeth 12 located at two sides of the dividing channel 11, wherein a heat dissipation channel 13 is formed between two adjacent heat dissipation teeth 12 in each heat dissipation tooth 12, and each heat dissipation channel 13 is communicated with the dividing channel 11. The cover body 2 is provided with a liquid inlet 21, a liquid outlet 22 and flow guide grooves 23, each flow guide groove 23 is communicated with at least one liquid inlet 21, and the flow guide grooves 23 are mainly used for guiding cooling liquid entering from the liquid inlet 21 to the heat dissipation channels 13 between two adjacent heat dissipation teeth 12 on the base 1, so that when the cooling liquid flows from the heat dissipation channels 13, heat on the base 1 can be taken away, and heat dissipation is carried out on a heat source part contacted with the base 1.

In a possible implementation manner, the diversion trench 23 of the cover body 2 is matched with the diversion trench 11 on the base 1, specifically, when the cover body 2 is installed on the base 1, as shown in fig. 1, the notch of the diversion trench 23 is located in the diversion trench 11, the edge of the notch of the diversion trench 23 is lower than the top edge of the heat dissipation teeth 12, and the edge of the notch of the diversion trench 23 is not in contact with the bottom of the diversion trench 11. Like this, the coolant liquid that flows in from inlet 21 of lid 2 introduces the bottom of splitter box 11 under the drainage effect of guiding gutter 23, then flows to the heat dissipation channel 13 of both sides from the bottom of splitter box 11 in, and then can avoid the coolant liquid directly to flow away from the gap between lid 2 and the top of heat dissipation tooth 12, and it is visible, under the drainage effect of guiding gutter 23, the coolant liquid can be smooth and easy flow to the heat dissipation channel 13 of splitter box 11 both sides in.

In order to allow the cooling liquid in the heat dissipation channels 13 to flow to the liquid outlet 22, correspondingly, as shown in fig. 1, a confluence channel 3 is formed between the base 1 and the cover 2, each heat dissipation channel 13 is communicated with the confluence channel 3, and the confluence channel 3 is communicated with the liquid outlet 22.

Based on above-mentioned structure, lid 2 fixed mounting is back on base 1, and the internal surface of lid 2 contacts with the top edge of heat dissipation tooth 12 on the base 1, and guiding gutter 23 of lid 2 stretches into in the splitter box 11 of base 1, and the notch edge of guiding gutter 23 is less than the top edge of heat dissipation tooth 12, and the notch edge of guiding gutter 23 does not contact with the tank bottom surface of splitter box 11. Thus, as shown in fig. 5 (the arrow indicates the flowing direction of the cooling liquid in the heat sink), the cooling liquid enters the heat sink through the liquid inlet 21 on the cover body 2, is introduced into the diversion trench 11 under the drainage action of the diversion trench 23, and flows to the heat dissipation channels 13 on both sides of the diversion trench 11 through the gap between the notch edge of the diversion trench 23 and the diversion trench 11, further, the cooling liquid in the heat dissipation channels 13 is gathered in the confluence channel 3, and then flows from the heat sink to other parts of the heat sink through the liquid outlet 22.

Therefore, compared with the prior art in which air cooling is used for radiating the chip of the equipment in the machine room, the liquid-cooled radiating fin is arranged at the position of the chip, the cooling liquid flowing in the radiating fin can take away the heat on the radiating fin, and the radiating fin is in contact with a heat source part (such as a chip), so that the radiating effect on the chip can be enhanced.

In one possible implementation, the first channel opening of each heat dissipation channel 13 communicates with the diversion trench 11, the second channel opening communicates with the confluence channel 3, and the confluence channel 3 communicates with the liquid outlet 22.

In the solution shown in the embodiment of the present application, as shown in fig. 1, in the heat dissipation teeth 12 at two sides of the diversion trench 11, the passage opening of the heat dissipation channel 13 in the heat dissipation tooth at each side close to the diversion trench 11 may be recorded as a first passage opening, and the passage opening far from the diversion trench 11 may be recorded as a second passage opening, as shown in fig. 1 again, in the heat dissipation channel 13 at each side, the first passage opening of each heat dissipation channel 13 is communicated with the diversion trench 11, the second passage opening of the heat dissipation channel 13 is communicated with the confluence channel 3, and the confluence channel 3 is communicated with the liquid outlet 22.

In a possible implementation, the number of the confluence passages 3 is two, corresponding to the heat dissipation passages 13 respectively located at both sides of the dividing channel 11; the cover 11 is provided with a liquid outlet 22 at a position corresponding to each confluence channel 3, and each liquid outlet 22 is communicated with the corresponding confluence channel 3.

For convenience of description, the heat dissipation channel 13 located on the first side of the diversion trench 11 may be referred to as a heat dissipation channel 13A, the confluence channel 3 may be referred to as a confluence channel 3A, the heat dissipation channel 13 located on the second side of the diversion trench 11 may be referred to as a heat dissipation channel 13B, and the confluence channel 3 may be referred to as a confluence channel 3B, where the first side and the second side of the diversion trench 11 are opposite sides to each other, as shown in fig. 2 and 6.

The scheme shown in this embodiment of the application is as shown in fig. 6, two liquid outlets 22 are provided on the cover body 2, one liquid outlet 22 corresponds to the confluence channel 3A and is not marked as a liquid outlet 22A, and the other liquid outlet 22 corresponds to the confluence channel 3B and is not marked as a liquid outlet 22B. In order to accelerate the fluidity of the cooling liquid in the heat sink, the liquid outlet 22 may correspond to an intermediate position of the communicating joining channel 3, for example, as shown in fig. 1, a liquid outlet 22A is provided on the cover 2 corresponding to an intermediate position of the joining channel 3A, and a liquid outlet 22B is provided on the cover 2 corresponding to an intermediate position of the joining channel 3B.

Thus, the cooling liquid enters the heat sink through the liquid inlet 21, and flows into the heat dissipation channels 13 on both sides of the dividing channel 11 under the action of the diversion trench 23, wherein the cooling liquid flowing into the heat dissipation channel 13A on the first side of the dividing channel 11 is gathered in the confluence channel 3A, and flows out of the heat sink through the liquid outlet 22A communicated with the confluence channel 3A; the cooling liquid in the heat dissipation channel 13B flowing to the second side of the flow dividing groove 11 is gathered in the converging channel 3B, and flows out of the heat dissipation fin through the liquid outlet 22B communicated with the converging channel 3B, so that the fluidity of the cooling liquid in the heat dissipation fin can be accelerated, and the heat dissipation effect of the heat dissipation fin can be improved.

In one possible implementation, the confluence passage 3 includes two confluence sub-passages 31 and a confluence main passage 32, and the confluence main passage 32 communicates with the two confluence sub-passages 31, respectively; one confluence sub-channel 31 is communicated with the second channel opening of each heat dissipation channel 13 positioned at one side of the splitter box 11, and the other confluence sub-channel 31 is communicated with the second channel opening of each heat dissipation channel 13 positioned at the other side of the splitter box 11; a liquid outlet 22 is provided on the cover 11 at a position corresponding to the main flow converging passage 32, and the liquid outlet 22 is communicated with the main flow converging passage 32.

In the solution shown in the embodiment of the present application, in order to make the heat dissipation channels 13 located at both sides of the diversion trench 11 communicate with the confluence channel 3, correspondingly, as shown in fig. 7 and referring to fig. 1 and 2, the confluence channel 3 includes two confluence sub-channels 31, one confluence sub-channel 31 communicates with the second channel opening of each heat dissipation channel 13 located at one side of the diversion trench 11, for example, communicates with the second channel opening of the heat dissipation channel 13A located at the first side of the diversion trench 11, and the confluence sub-channel 31 can be referred to as confluence sub-channel 31A; another bus sub-passage 31 communicates with the second passage opening of each heat dissipation passage 13 on the other side of the dividing channel 11, for example, with the second passage opening of the heat dissipation passage 13B on the second side of the dividing channel 11, and this bus sub-passage 31 may be referred to as a bus sub-passage 31B.

In order to converge the cooling liquids in the two bus ducts 31, correspondingly, as shown in fig. 7, the bus duct 3 further includes a bus main duct 32, one duct port of the bus main duct 32 communicates with the bus duct 31A, and the other duct port of the bus main duct 32 communicates with the bus duct 31B. A liquid outlet 22 is provided on the cover 11 at a position corresponding to the main flow converging passage 32, and the liquid outlet 22 is communicated with the main flow converging passage 32. Thus, the coolant in the heat dissipation channel 13A on the first side of the diversion trench 11 flows into the confluence sub-channel 31A, the coolant in the confluence sub-channel 31A flows into the confluence main channel 32, and then flows out of the heat sink through the liquid outlet 22 communicated with the confluence main channel 32; the coolant in the heat radiation passage 13B on the second side of the diversion trench 11 flows into the confluence sub-passage 31B, and the coolant in the confluence sub-passage 31B flows into the confluence main passage 32 and then flows out of the heat sink through the liquid outlet 22 communicated with the confluence main passage 32. This arrangement of the liquid outlet 22 in the cover 2 ensures the fluidity of the coolant in the heat sink and simplifies the structure of the heat sink.

In a possible realization, the surface of the cover 2 facing the base 1 is provided with a groove 24 for collecting current, and a channel 3 for collecting current is formed between the groove 24 for collecting current of the cover 2 and the top edge of the heat dissipation teeth 12 of the base 1.

In the solution shown in the embodiment of the present application, in such a manner that the confluence channel 3 is formed between the upper cover 25 of the cover body 2 and the top edge of the heat dissipation teeth 12, the end of the heat dissipation teeth 12 away from the diversion channel 11 may extend all the way to the side wall 26 of the cover body 2, that is, the end of the heat dissipation teeth 12 away from the diversion channel 11 may contact with the side wall 26 of the cover body 2. Therefore, the total area of the heat dissipation teeth 12 on the base 1 is not affected by the structure, that is, the total area of the heat dissipation teeth 12 on the base 1 is not reduced, so that the heat dissipation area can be increased, and the heat dissipation effect of the heat dissipation fins is improved.

In a possible implementation, the confluence channel 3 is formed between the lower surface of the cover 2, the side wall of the cover 2, the upper surface of the base 1 and the heat dissipation teeth 12.

According to the scheme shown in the embodiment of the application, in the way that the confluence channel 3 is formed between the side wall 26 of the cover body 2 and the side part of the heat dissipation tooth 12, the heat sink 12 does not extend to the side wall 26 of the cover body 2, the length of the heat dissipation tooth 12 is shortened, so that the cooling liquid can flow through the heat dissipation channel 13 quickly, the mobility of the cooling liquid in the heat dissipation fins can be accelerated, and the heat dissipation effect of the heat dissipation fins can be enhanced.

In a possible realization, the top edge of the heat dissipation tooth 12 is in contact with the surface of the cover 2 close to the base 2.

According to the scheme shown in the embodiment of the application, the top edge of the heat dissipation teeth 12 is in close contact with the surface, close to the base 2, of the cover body 2, the sealing performance of the heat dissipation fins can be improved, the cooling liquid is prevented from flowing out of a gap between the base and the cover body, and then the cooling liquid can be promoted to flow in the heat dissipation channel between the two adjacent heat dissipation teeth, so that the heat dissipation effect of the heat dissipation fins is improved.

In a possible implementation, the liquid inlet 21 is disposed at a central position of the cover 2.

In the embodiment of the present application, the flow guide groove 23 may be a strip groove, the central line of the flow guide groove coincides with the central axis of the upper cover 25 of the cover body 2, and the liquid inlet 21 may correspond to the middle position of the flow guide groove 23, so that, as shown in fig. 3, the liquid inlet 21 may be located at the central position of the upper cover 25 of the cover body 2. This arrangement allows the coolant entering from the liquid inlet 21 at the central position to flow uniformly into the respective heat dissipation channels inside the heat dissipation fins, thereby improving the heat dissipation effect.

In a second aspect, there is provided a heat sink, the heat dissipation system comprising a water pump, a water tank and the heat sink of the first aspect, wherein: the water pump respectively with the water tank, the inlet of fin passes through the pipeline and links to each other, the liquid outlet of fin with the water tank passes through the pipeline and links to each other.

The shown scheme of this application embodiment, the water tank is used for holding the coolant liquid, and the water pump can be with the coolant liquid pump in the water tank go into the fin, and the coolant liquid enters into the fin through the inlet, under the high-pressure drive of water pump, flows in a plurality of radiating passage in the fin, then flows out from the fin in the liquid outlet follow fin, later, flows into the water tank once more, realizes the circulation flow of coolant liquid in the radiator.

In a possible implementation manner, the heat sink further includes an exchange water tank, the liquid outlet of the heat sink is connected to the exchange water tank through a pipeline, and the exchange water tank is connected to the water tank through a pipeline.

According to the scheme shown in the embodiment of the application, the exchange water tank is that the cooling liquid with higher temperature in the radiating fins enters the exchange water tank, the exchange water tank provides the cooling liquid with lower temperature for the water tank, and therefore the temperature of the cooling liquid circulating in the radiator can be kept in a lower state through the exchange water tank, and the radiating effect of the heat source part can be further enhanced.

The technical scheme provided by the embodiment of the application has the following beneficial effects:

in an embodiment of the present disclosure, the heat sink includes a base and a cover, wherein: the cover body is provided with a liquid inlet, a liquid outlet and a diversion trench, and the liquid inlet is communicated with the diversion trench; the base comprises a splitter box and a plurality of radiating teeth positioned on two sides of the splitter box, radiating channels are formed between adjacent radiating teeth, and each radiating channel is respectively communicated with the splitter box; the cover body is fixed on the base, the notch of the diversion trench is positioned in the diversion trench, the edge of the notch of the diversion trench is lower than the top edge of the heat dissipation teeth, and the edge of the notch of the diversion trench is not in contact with the bottom of the diversion trench; a confluence channel is formed between the base and the cover body and is communicated with the heat dissipation channel and the liquid outlet; the surface of the base, which faces away from the heat dissipation teeth, is used for contacting with the heat source piece. Compared with the prior art in which air cooling is used for radiating the chip of the equipment in the machine room, the liquid-cooled radiating fin is arranged at the position of the chip, the cooling liquid flowing in the radiating fin can take away the heat on the radiating fin, and the radiating fin is in contact with a heat source part such as the chip, so that the radiating effect of the radiating fin on the chip can be enhanced.

Drawings

Fig. 1 is a schematic structural diagram of a heat sink provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a base of a heat sink provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a cover of a heat sink according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a base of a heat sink provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a heat sink according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a heat sink according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a heat sink according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a heat sink according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a heat sink according to an embodiment of the present application.

Description of the figures

1. Base 2 and cover

3. Bus duct 10 and substrate

11. Splitter box 12, heat dissipation tooth

13. Heat dissipation channel 21, liquid inlet

22. Liquid outlet 23 and flow guide groove

24. Converging groove 25 and upper cover

26. Side wall 31, bus duct

32. Confluence main channel

3A and 3B confluence passages

12A, heat dissipation teeth 12B and heat dissipation teeth

13A, a heat dissipation channel 13B, a heat dissipation channel

22A, a liquid outlet 22B and a liquid outlet

31A, a bus duct 31B, a bus duct

Detailed Description

The present embodiment provides a heat sink, as shown in fig. 1 and fig. 2, which includes a base 1 and a cover 2, wherein: the cover body 2 is provided with a liquid inlet 21, a liquid outlet 22 and a diversion trench 23, and the liquid inlet 21 is communicated with the diversion trench 23; as shown in fig. 2, the base 1 includes a dividing channel 11 and a plurality of heat dissipation teeth 12 located at two sides of the dividing channel 11, heat dissipation channels 13 are formed between adjacent heat dissipation teeth 12, and each heat dissipation channel 13 is respectively communicated with the dividing channel 11; as shown in fig. 1, the cover body 2 is mounted on the base 1, the notch of the diversion trench 23 is located in the diversion trench 11, and the edge of the notch of the diversion trench 23 is lower than the top edge of the heat dissipation teeth 12; a confluence channel 3 is formed between the base 1 and the cover body 2, and the confluence channel 3 is communicated with the heat dissipation channel 13 and the liquid outlet 22; the surface of the base 1 facing away from the heat dissipation teeth 12 is used to contact a heat source.

In a possible embodiment, the heat sink may include a base 1 and a cover 2, where the cover 2 is fixed to the base 1, for example, the cover may be fixed by a screw, or may be fixed by welding, or may be fixed by a snap connection and a screw, for example, the fixing manner of the cover 2 and the base 1 is not specifically limited in this embodiment, and stable fixing may be achieved.

In practice, after the cover 2 and the base 1 are fixed, a receiving chamber may be formed therebetween, so that the heat dissipation teeth provided on the base 1 may be received in the receiving chamber. In order to form a containing chamber between the fixed cover 2 and the base 1, correspondingly, one way may be as shown in fig. 1, the base 1 has a plate-shaped structure, the cover 2 may be a flat polygonal box-shaped structure without a bottom plate, as shown in fig. 3, the cover 2 may include an upper cover 25 and a side wall 26, as shown in fig. 1, the side wall 26 of the cover 2 is fixed on the base 1, and further, the containing chamber may be formed between the upper cover 25 of the cover 2 and the base 1, wherein the shape of the cover 2 may be flexibly configured, for example, may be a flat quadrangular box-shaped structure as shown in fig. 3.

Another way to form the accommodating chamber between the cover 2 and the base 1 may be that the cover 2 has a plate-like structure, the base 1 may be a flat box-like structure without a top cover, and may include a bottom plate and a side wall, and the cover 2 is fixed to the side wall of the base 1, so that the accommodating chamber may be formed between the cover 2 and the bottom plate of the base 1.

For another example, another way to form the accommodating chamber between the cover 2 and the base 1 may be that the base 1 is a flat polygonal box-shaped structure without a top cover, and the cover 2 is a flat polygonal box-shaped structure without a bottom plate, wherein the polygonal box-shaped structure of the base 1 is matched with the polygonal box-shaped structure of the cover 2, so that the side wall of the cover 2 is fixed with the side wall of the base 1, so that the accommodating chamber can be formed between the upper cover of the cover 2 and the bottom plate of the base 1.

In the embodiment, the specific manner of forming the accommodating chamber between the cover 2 and the base 1 is not specifically limited to the accommodating chamber capable of forming the heat dissipation teeth on the base 1, and technicians can flexibly set the accommodating chamber according to actual conditions. In this embodiment, the base 1 has a plate-shaped structure, and the cover 2 has a flat quadrangular box-shaped structure without a bottom plate, which are similar to each other and will not be described again.

As shown in fig. 2, the base 1 may include a dividing channel 11 and a plurality of heat dissipation teeth 12 located at two sides of the dividing channel 11, wherein a heat dissipation channel 13 is formed between two adjacent heat dissipation teeth 12 in each heat dissipation tooth 12, and each heat dissipation channel 13 is communicated with the dividing channel 11.

The diversion channel 11 is used for distributing the flowing-in cooling liquid to the heat dissipation channels 13 on the two sides, so that the cooling liquid flows in the heat dissipation channels 13.

The heat dissipation teeth 12 are of a sheet structure and can be vertically erected on the base 1, a heat dissipation channel 13 can be formed between every two adjacent heat dissipation teeth 12, and in the process of flowing of cooling liquid in the heat dissipation channel 13, the cooling liquid can be in contact with the side walls of the heat dissipation teeth 12, so that heat on the heat dissipation teeth 12 is taken away.

The specific structure may be that the base 1 may include a substrate 10, and the substrate 10 is provided with heat dissipation teeth 12, for example, as shown in fig. 2, two rows of heat dissipation teeth 12 may be provided on the substrate 10, each row of heat dissipation teeth 12 includes a plurality of heat dissipation teeth 12, the diversion trench 11 is formed between the two rows of heat dissipation teeth 12, so that the opposite side walls of the two rows of heat dissipation teeth 12 form the trench walls of the diversion trench 11, and the inner surface of the substrate 10 is the trench bottom of the diversion trench 11. For another example, as shown in fig. 4, a strip-shaped heat dissipation tooth 12 is provided from one end to the other end of the base plate 10, the height of the heat dissipation tooth 12 at the middle position is lower than the height of the heat dissipation teeth 12 at both sides, and further, as shown in fig. 4, the heat dissipation tooth 12 at the middle position with the lower height forms a diversion channel 11 with respect to the heat dissipation teeth 12 at both sides with the higher height.

The dividing channel 11 may be perpendicular to the heat dissipation teeth 12, and correspondingly, the heat dissipation channel 13 formed between two adjacent heat dissipation teeth 12 is also perpendicular to the dividing channel 11. Thus, as shown in fig. 2 and 4, the two rows of heat dissipation teeth 12 are radially distributed on the substrate 10 of the base 1 toward the two sides of the diversion trench 11, and further, the cooling liquid in the diversion trench 11 can flow into the heat dissipation channels 13 at the two sides, and in the process that the cooling liquid flows in the heat dissipation channels 13, the heat on the heat dissipation teeth 12 can be taken away, so as to cool the base 1, and the base 1 is in contact with the heat source, so as to dissipate the heat of the heat source.

In one possible embodiment, in order to make the cooling liquid in the dividing channel 11 flow uniformly to the heat dissipation channels 13 on both sides, the heat dissipation teeth 12 on both sides of the dividing channel 11 may be symmetrical with respect to the center line of the dividing channel 11, wherein the center line of the dividing channel 11 may coincide with the central axis of the base plate 10.

On the substrate 10, each side of the shunting groove 11 may be provided with high-density heat dissipation teeth, which means that the number of heat dissipation teeth per unit area on the substrate 10 is large, and under the condition that the number of the heat dissipation teeth 12 is large, the heat dissipation area of the base 1 may be increased, thereby accelerating the heat dissipation.

As shown in fig. 1 and fig. 3, the cover body 2 is provided with a liquid inlet 21, liquid outlets 22 and flow guide grooves 23, wherein the number of the liquid inlet 21, the number of the liquid outlets 22 and the number of the flow guide grooves 23 may be one or more, and the number of the liquid inlet 21, the number of the liquid outlets 22 and the number of the flow guide grooves 23 may be set by a technician according to actual requirements. Each flow guide groove 23 is communicated with at least one liquid inlet 21, and each flow guide groove 23 is mainly used for guiding cooling liquid entering from the liquid inlet 21 to the heat dissipation channel 13 between two adjacent heat dissipation teeth 12 on the base 1, so that when the cooling liquid flows from the heat dissipation channel 13, heat on the base 1 can be taken away, and heat dissipation is performed on a heat source part in contact with the base 1.

In the implementation, the guiding groove 23 is disposed on the surface of the cover 2 facing the base 1, and since the surface is located inside the heat sink, it can be referred to as the inner surface of the cover 2, specifically, as shown in fig. 3, two vertical plates may be disposed on the inner surface of the cover 2, and the two vertical plates are perpendicular to the upper cover 25 of the cover 2, so that the two vertical plates and the upper cover 25 may form the guiding groove 23. The two vertical plates are groove walls of the diversion groove 23, the inner surface of the upper cover 25 is a groove bottom of the diversion groove 23, the end parts of the two vertical plates far away from the upper cover 25 form a groove opening of the diversion groove 23, and the end part edges of the two vertical plates far away from the upper cover 25 are groove opening edges of the diversion groove 23.

In implementation, the guiding gutter 23 of the cover body 2 is matched with the dividing channel 11 on the base 1, specifically, when the cover body 2 is installed on the base 1, as shown in fig. 1, the notch of the guiding gutter 23 is located in the dividing channel 11, the edge of the notch of the guiding gutter 23 is lower than the top edge of the heat dissipation teeth 12, and the edge of the notch of the guiding gutter 23 is not in contact with the bottom of the dividing channel 11 (i.e., there is a certain gap between the edge of the notch of the guiding gutter 23 and the bottom of the dividing channel 11, so that the coolant flows into the heat dissipation channels on both sides). Like this, the coolant liquid that flows in from inlet 21 of lid 2 introduces the bottom of splitter box 11 under the drainage effect of guiding gutter 23, then flows to the heat dissipation channel 13 of both sides from the bottom of splitter box 11 in, and then can avoid the coolant liquid directly to flow away from the gap between lid 2 and the top of heat dissipation tooth 12, and it is visible, under the drainage effect of guiding gutter 23, the coolant liquid can be smooth and easy flow to the heat dissipation channel 13 of splitter box 11 both sides in.

In order to allow the cooling liquid in the heat dissipation channels 13 to flow to the liquid outlet 22, correspondingly, as shown in fig. 1, a confluence channel 3 is formed between the base 1 and the cover 2, each heat dissipation channel 13 is communicated with the confluence channel 3, and the confluence channel 3 is communicated with the liquid outlet 22. Specifically, as shown in fig. 1, in the heat dissipation teeth 12 on both sides of the diversion trench 11, the opening of the heat dissipation channel 13 in each heat dissipation tooth on each side close to the diversion trench 11 may be denoted as a first opening, and the opening far away from the diversion trench 11 may be denoted as a second opening, and referring to fig. 1 again, in the heat dissipation channel 13 on each side, the first opening of each heat dissipation channel 13 is communicated with the diversion trench 11, the second opening of the heat dissipation channel 13 is communicated with the confluence channel 3, and the confluence channel 3 is communicated with the liquid outlet 22.

The specific structure of the bus duct 3 will be described in detail below.

Like this, the coolant liquid in heat dissipation channel 13 alright flow out from liquid outlet 22 through converging flow passage 3, and then make the continuous lower coolant liquid of inflow temperature of inlet 21, the higher coolant liquid of liquid outlet 22 outflow temperature has increased the mobility of coolant liquid in the fin, and then can accelerate the heat dissipation.

Based on above-mentioned structure, lid 2 fixed mounting is back on base 1, and the internal surface of lid 2 contacts with the top edge of heat dissipation tooth 12 on the base 1, for example, closely laminates mutually, and guiding gutter 23 of lid 2 stretches into in the splitter box 11 of base 1, and the notch edge of guiding gutter 23 is less than the top edge of heat dissipation tooth 12, and the notch edge of guiding gutter 23 does not contact with the tank bottom surface of splitter box 11. Thus, as shown in fig. 5 (the arrow in the figure indicates the flowing direction of the cooling liquid in the heat sink), the cooling liquid enters the heat sink through the liquid inlet 21 on the cover body 2, under the drainage action of the diversion trench 23, the cooling liquid is introduced into the diversion trench 11, and flows to the heat dissipation channels 13 on both sides of the diversion trench 11 through the gap between the edge of the notch of the diversion trench 23 and the diversion trench 11, further, the cooling liquid in the heat dissipation channels 13 is gathered in the confluence channel 3, and then flows from the heat sink to other parts of the heat sink through the liquid outlet 22, for example, the cooling liquid can flow to the heat sink at the chip of other heat source parts, and can also flow directly to the water tank of the heat sink, and the like.

Moreover, the heat sink in this embodiment includes the base 1 and the cover 2, and involves fewer parts and is simple in structure, so that the installation space can be saved. In addition, due to the matching relationship between the diversion trench 23 on the cover body 2 and the diversion trench 11 of the base 1 (that is, the diversion trench 23 extends into the diversion trench 11), no extra gasket is needed for sealing between the base 1 and the cover body 2, and the structure of the radiator can be further simplified.

Alternatively, in order to make the heat dissipation channels 13 on both sides of the diversion trench 11 communicate with the confluence channel 3, correspondingly, as shown in fig. 6 (the arrows in the figure indicate the flowing direction of the cooling liquid in the cooling fins), the number of the confluence channels 3 is two, and also respectively located on both sides of the diversion trench 11, that is, there is one confluence channel 3 corresponding to each diversion trench 11, and in order to make each confluence channel 3 communicate with the liquid outlets 22, correspondingly, the number of the liquid outlets 22 is also two, and there is one liquid outlet 22 corresponding to each confluence channel 3.

In the implementation, as shown in fig. 6, two liquid outlets 22 are provided on the cover body 2, one liquid outlet 22 corresponds to the confluence channel 3A and is not marked as a liquid outlet 22A, and the other liquid outlet 22 corresponds to the confluence channel 3B and is not marked as a liquid outlet 22B. The liquid outlet 22 corresponding to the confluence channel 3 mainly refers to the liquid outlet 22 communicated with the confluence channel 3, and the liquid outlet 22 may correspond to any position of the communicated confluence channel 3, for example, the liquid outlet 3 may correspond to a position of a channel opening of the communicated confluence channel 3, or may correspond to an intermediate position of the communicated confluence channel 3. In order to accelerate the fluidity of the cooling liquid in the heat sink, the liquid outlet 22 may correspond to an intermediate position of the communicating joining channel 3, for example, as shown in fig. 1, a liquid outlet 22A is provided on the cover 2 corresponding to an intermediate position of the joining channel 3A, and a liquid outlet 22B is provided on the cover 2 corresponding to an intermediate position of the joining channel 3B.

Alternatively, in order to simplify the structure of the heat sink, correspondingly, the cover 2 of the heat sink may also be provided with a liquid outlet 22, as shown in fig. 7 (the arrow in the figure indicates the flowing direction of the cooling liquid in the heat sink), the converging channel 3 includes two converging sub-channels 31 and a converging main channel 32, and the converging main channel 32 is respectively communicated with the two converging sub-channels 31; one confluence sub-channel 31 is communicated with the second channel opening of each heat dissipation channel 13 positioned at one side of the splitter box 11, and the other confluence sub-channel 31 is communicated with the second channel opening of each heat dissipation channel 13 positioned at the other side of the splitter box 11; a liquid outlet 22 is provided on the cover 11 at a position corresponding to the main flow converging passage 32, and the liquid outlet 22 is communicated with the main flow converging passage 32.

In implementation, as described above, in order to make the heat dissipation channels 13 on both sides of the dividing channel 11 communicate with the confluence channel 3, accordingly, as shown in fig. 7 with reference to fig. 1 and 2, the confluence channel 3 includes two confluence sub-channels 31, one confluence sub-channel 31 communicates with the second channel opening of each heat dissipation channel 13 on one side of the dividing channel 11, for example, communicates with the second channel opening of the heat dissipation channel 13A on the first side of the dividing channel 11, and the confluence sub-channel 31 can be referred to as confluence sub-channel 31A; another bus sub-passage 31 communicates with the second passage opening of each heat dissipation passage 13 on the other side of the dividing channel 11, for example, with the second passage opening of the heat dissipation passage 13B on the second side of the dividing channel 11, and this bus sub-passage 31 may be referred to as a bus sub-passage 31B.

In the case where the heat sink has one liquid outlet 22, the liquid outlet 22 may correspond to any position of the communicating confluence main passage 32, for example, may correspond to a position of a passage opening of the communicating confluence main passage 32, or may correspond to an intermediate position of the communicating confluence main passage 32. In order to increase the fluidity of the cooling liquid in the heat sink, the liquid outlet 22 may correspond to the middle position of the main converging channel 32, so that the flow rate of the cooling liquid flowing into the liquid outlet 22 per unit time unit area in the converging sub-channels 31 on both sides of the flow dividing groove 11 is substantially equal, thereby achieving a good flow dividing effect and improving the fluidity of the cooling liquid in the heat sink.

The number of the liquid outlets 22 may be one or multiple, and technicians may flexibly set the number according to actual needs, which is not specifically limited in this embodiment.

Optionally, the number of the liquid inlets 21 on the cover body 2 may also be one or more, under the condition of having a plurality of liquid inlets 21, a plurality of liquid inlets 21 may be disposed at positions on the cover body 2 corresponding to the diversion trenches 23, for example, the diversion trenches 23 are strip trenches, the central lines of which coincide with the central axis of the upper cover 25 of the cover body 2, and the plurality of liquid inlets 21 may be uniformly distributed on the upper cover 25 along the strip diversion trenches 23, so that the plurality of liquid inlets 21 may improve the flowability of the cooling liquid in the cooling fin, thereby increasing the heat dissipation effect of the cooling fin.

Optionally, the number of the liquid inlets 21 may also be one, and in the case of one liquid inlet 21, for example, the guiding groove 23 may be a strip-shaped groove, a central line of the strip-shaped groove coincides with a central axis of the upper cover 25 of the cover body 2, and the liquid inlet 21 may correspond to a middle position of the guiding groove 23, so that the liquid inlet 21 may be located at a central position of the upper cover 25 of the cover body 2, as shown in fig. 3. This arrangement allows the coolant entering from the liquid inlet 21 at the central position to flow uniformly into the respective heat dissipation channels inside the heat dissipation fins, thereby improving the heat dissipation effect.

In this embodiment, the number of the liquid inlets 21 may be one or more, and technicians may flexibly set the liquid inlets according to actual needs, which is not specifically limited in this embodiment.

Alternatively, as described above, the bus duct 3 is formed between the base 1 and the cover 2, and a specific structure may be that, as shown in fig. 3, a bus groove 24 is provided on a surface of the cover 2 facing the base 1, and as shown in fig. 8, the bus duct 3 is formed between the bus groove 24 of the cover 2 and the heat dissipation teeth 12 of the base 1.

In practice, as shown in fig. 3, a bus groove 24 may be provided on the inner surface of the upper cover 25 of the cover body 2 near the side wall 26, and further, as shown in fig. 1, 5 and 8, a bus channel 3 may be formed between the bus groove 24 and the top edge of the heat dissipation teeth 12. For example, as described above, in the case that the number of the confluence passages 3 is two, the inner surface of the upper cover 25 of the lid body 2 is provided with one confluence groove 24 on each side of the guiding groove 23, and each confluence groove 24 and the top edge of the heat dissipation teeth 12 located below form one confluence passage 3. For another example, as described above, in the case that the confluence channel 3 includes two confluence sub-channels 31 and a confluence main channel 32, the inner surface of the upper cover 25 of the cover body 2 is provided with one confluence groove 24 at each of the two sides of the guiding groove 23, each confluence groove 24 and the top edge of the heat dissipation tooth 12 located below form one confluence sub-channel 31, the inner surface of the upper cover 25 of the cover body 2 is provided with one confluence groove 24 at a position corresponding to the liquid outlet 22, and the confluence groove 24 and the top edge of the heat dissipation tooth 12 located below form one confluence main channel 32.

In this way, the end of the heat dissipation teeth 12 away from the splitter box 11 may extend all the way to the side wall 26 of the cover 2, i.e. the end of the heat dissipation teeth 12 away from the splitter box 11 may contact the side wall 26 of the cover 2, in such a way that the confluence channel 3 is formed between the top cover 25 of the cover 2 and the top edge of the heat dissipation teeth 12. Therefore, the total area of the heat dissipation teeth 12 on the base 1 is not affected by the structure, that is, the total area of the heat dissipation teeth 12 on the base 1 is not reduced, so that the heat dissipation area can be increased, and the heat dissipation effect of the heat dissipation fins is improved.

Alternatively, another forming structure of the collecting channel 3 may be that, as shown in fig. 9, the collecting channel 3 is formed between the lower surface of the cover 2, the side wall of the cover 2, the upper surface of the base 1, and the heat dissipation teeth 12.

In implementation, as described above, when the number of the confluence channels 3 is two, the end of the heat dissipation teeth 12 far away from the diversion channel 11 does not extend to the side wall 26 of the cover body 2, that is, the end of the heat dissipation teeth 12 far away from the diversion channel 11 is not in contact with the side wall 26 of the cover body 2, so that a gap can be formed between the end of the heat dissipation teeth 12 far away from the diversion channel 11 and the side wall 26 of the cover body 2, and further, the confluence channels 3 are formed between the lower surface of the cover body 2, the side wall of the cover body 2, the upper surface of the base 1, and the end of the heat dissipation teeth 12 far away from the diversion channel 11. In the case that the confluence channel 3 includes two confluence sub-channels 31 and confluence main channels 32, similar to the two confluence channels 3, the end of the heat dissipation teeth 12 far away from the diversion channel 11 is not in contact with the side wall 26 of the cover body 2, and a gap can be formed between the end of the heat dissipation teeth 12 far away from the diversion channel 11 and the side wall 26 of the cover body 2, so that the confluence sub-channels 31 are formed by the lower surface of the cover body 2, the side wall of the cover body 2, the upper surface of the base 1, and the end of the heat dissipation teeth 12 far away from the diversion channel 11; as for the confluence main channel 32, the confluence main channel 32 is formed between the lower surface of the cover 2, the side wall of the cover 2, the upper surface of the base 1, and the side wall of the heat dissipation teeth 12 at the outermost edge in the length direction.

In this way, the converging channel 3 is formed between the side wall 26 of the cover 2 and the side portion of the heat dissipation teeth 12, and the heat sink 12 does not extend to the side wall 26 of the cover 2, so that the length of the heat dissipation teeth 12 is shortened, the cooling liquid can quickly flow through the heat dissipation channel 13, the fluidity of the cooling liquid in the heat dissipation fins can be accelerated, and the heat dissipation effect of the heat dissipation fins can be enhanced.

In an embodiment of the present disclosure, the heat sink includes a base and a cover, wherein: the cover body is provided with a liquid inlet, a liquid outlet and a diversion trench, and the liquid inlet is communicated with the diversion trench; the base comprises a splitter box and a plurality of radiating teeth positioned on two sides of the splitter box, radiating channels are formed between adjacent radiating teeth, and each radiating channel is respectively communicated with the splitter box; the cover body is arranged on the base, the notch of the diversion trench is positioned in the diversion trench, and the edge of the notch of the diversion trench is lower than the edge of the top of the heat dissipation tooth; a confluence channel is formed between the base and the cover body and is communicated with the heat dissipation channel and the liquid outlet; the surface of the base, which faces away from the heat dissipation teeth, is used for contacting with the heat source piece. Compared with the prior art in which the chip of the equipment in the machine room is cooled by air cooling, the liquid-cooled radiating fin is arranged at the position of the chip, the cooling liquid flowing in the radiating fin can take away the heat on the radiating fin, and the radiating fin is in contact with a heat source part (such as a chip), so that the radiating fin can enhance the radiating effect on the chip.

This embodiment still provides a radiator, and this radiator can include water pump, water tank and foretell fin, and wherein, the water pump passes through the pipeline with the inlet of water tank, fin respectively and links to each other, and the liquid outlet of fin passes through the pipeline with the water tank and links to each other.

In the implementation, the water tank is used for holding the coolant liquid, and the water pump can be with coolant liquid pump in the water tank to go into the fin, and the coolant liquid enters into the fin through the inlet, under the high pressure drive of water pump, flows in a plurality of radiating passage in the fin, then flows out from the fin from the liquid outlet, afterwards, flows into the water tank again, realizes the circulation flow of coolant liquid in the radiator.

In one possible application, one heat sink may dissipate heat from one heat source, or may dissipate heat from multiple heat sources. For example, one heat sink may dissipate heat for a chip of one communication device, may dissipate heat for other components of the communication device, and may dissipate heat for chips of a plurality of communication devices. Under the condition that a radiator radiates heat for a heat source part, the water pump is respectively connected with the water tank and the liquid inlet of the radiating fin through pipelines, the liquid outlet of the radiating fin is connected with the water tank through a pipeline, and the outer surface of the base of the radiating fin, which is back to the cover body, is contacted with the heat source part. Under the condition that one radiating fin radiates heat for a plurality of heat source parts, the radiator can comprise a plurality of radiating fins, the outer surface of the base of each radiating fin, back to the cover body, is in contact with the heat source part for radiating heat, the radiating fins can share the water pump and the water tank, and the plurality of radiating fins connect the liquid inlet and the liquid outlet in series through the pipelines.

For example, the heat sink is formed by connecting three heat source parts, and accordingly, the heat sink may include three heat dissipation fins, one heat dissipation fin is installed on each heat source part, the water pump is connected to the liquid inlet of the first heat dissipation fin through a pipeline, the liquid outlet of the first heat dissipation fin is connected to the liquid inlet of the second heat dissipation fin through a pipeline, the liquid outlet of the second heat dissipation fin is connected to the liquid inlet of the third heat dissipation fin through a pipeline, and the liquid outlet of the third heat dissipation fin is connected to the water tank through a pipeline, so that the heat sink can dissipate heat for the three heat source parts.

Optionally, the radiator may further include an exchange water tank, and the liquid outlet of the heat sink is connected to the water tank through the exchange water tank, that is, the liquid outlet of the heat sink is connected to the exchange water tank through a pipe, and the exchange water tank is connected to the water tank through a pipe.

The exchange water tank also means that the cooling liquid with higher temperature in the radiating fins enters the exchange water tank, the exchange water tank provides the cooling liquid with lower temperature for the water tank, and therefore the temperature of the cooling liquid circulating in the radiator can be kept in a lower state through the exchange water tank, and the radiating effect of the heat source part can be further enhanced.

In an embodiment of the present disclosure, the heat sink may include a base and a cover, as described above, wherein: the cover body is provided with a liquid inlet, a liquid outlet and a diversion trench, and the liquid inlet is communicated with the diversion trench; the base comprises a splitter box and a plurality of radiating teeth positioned on two sides of the splitter box, radiating channels are formed between adjacent radiating teeth, and each radiating channel is respectively communicated with the splitter box; the cover body is fixed on the base, the notch of the diversion trench is positioned in the diversion trench, the edge of the notch of the diversion trench is lower than the top edge of the heat dissipation teeth, and the edge of the notch of the diversion trench is not in contact with the bottom of the diversion trench; a confluence channel is formed between the base and the cover body and is communicated with the heat dissipation channel and the liquid outlet; the surface of the base, which faces away from the heat dissipation teeth, is used for contacting with the heat source piece. Compared with the prior art in which the chip of the equipment in the machine room is cooled by air cooling, the liquid-cooled radiating fin is arranged at the position of the chip, the cooling liquid flowing in the radiating fin can take away the heat on the radiating fin, and the radiating fin is in contact with a heat source part (such as a chip), so that the radiating fin can enhance the radiating effect on the chip.

The above description is only one embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat sink, characterized in that it comprises a base (1) and a cover (2), wherein:

the cover body (2) is provided with a liquid inlet (21), a liquid outlet (22) and a flow guide groove (23), and the liquid inlet (21) is communicated with the flow guide groove (23);

the base (1) comprises a splitter box (11) and a plurality of radiating teeth (12) positioned on two sides of the splitter box (11), radiating channels (13) are formed between adjacent radiating teeth (12), and each radiating channel (13) is respectively communicated with the splitter box (11);

the cover body (2) is arranged on the base (1), the notch of the diversion trench (23) is positioned in the diversion trench (11), and the edge of the notch of the diversion trench (23) is lower than the top edge of the heat dissipation teeth (12);

a confluence channel (3) is formed between the base (1) and the cover body (2), and the confluence channel (3) is communicated with the liquid outlet (22);

the first channel port of each heat dissipation channel (13) is respectively communicated with the diversion channel (11), and the second channel port of each heat dissipation channel (13) is respectively communicated with the confluence channel (3);

the surface of the base (1) opposite to the radiating teeth (12) is used for contacting with a heat source piece.

2. A fin as claimed in claim 1, wherein the number of the flow-joining channels (3) is two, corresponding to the heat-dissipating channels (13) on both sides of the flow-dividing groove (11);

liquid outlets (22) are arranged on the cover body (2) at positions corresponding to the confluence channels (3), and each liquid outlet (22) is communicated with the corresponding confluence channel (3).

3. A fin as claimed in claim 1, wherein the bus duct (3) comprises two bus sub-ducts (31) and a bus main duct (32), the bus main duct (32) communicating with the two bus sub-ducts (31), respectively;

one of the confluence sub-channels (31) is communicated with the second channel opening of each heat dissipation channel (13) positioned at one side of the flow dividing groove (11), and the other confluence sub-channel (31) is communicated with the second channel opening of each heat dissipation channel (13) positioned at the other side of the flow dividing groove (11);

a liquid outlet (22) is arranged on the cover body (2) corresponding to the confluence main channel (32), and the liquid outlet (22) is communicated with the confluence main channel (32).

4. A heat sink according to claim 1, characterised in that the cover (2) is provided with a groove (24) for collecting current on its surface facing the base (1), the groove (24) for collecting current of the cover (2) and the top edge of the heat-dissipating tooth (12) of the base (1) forming a channel (3) for collecting current.

5. A heat sink according to claim 1, wherein the heat sink teeth (12) and the lower surface of the cover (2), the side walls of the cover (2), and the upper surface of the base (1) form a flow-joining channel (3) therebetween.

6. A heat sink according to claim 1, wherein the top edge of the heat dissipating tooth (12) is in contact with the surface of the cover (2) close to the base (2).

7. A heat sink according to any one of claims 1-6, wherein the liquid inlet (21) is arranged in a central position of the cover (2).

8. A radiator comprising a water pump, a water tank and the fin of any one of claims 1 to 7, wherein:

the water pump respectively with the water tank, the inlet of fin passes through the pipeline and links to each other, the liquid outlet of fin with the water tank passes through the pipeline and links to each other.

9. The heat sink of claim 8, further comprising an exchange water tank, wherein the liquid outlet of the heat sink is connected to the exchange water tank via a pipe, and the exchange water tank is connected to the water tank via a pipe.