Liquid cooling radiator and its heat sink

Abstract

A heat sink comprises an inlet and outlet liquid cavity, wherein the inlet and outlet liquid cavities are separated by a partition, and a through hole is provided above the liquid level of the partition, wherein the through hole can pass gas, and comprises a detachable auxiliary pipe. A liquid cooling radiator comprises the heat sink.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling technology for cooling electronic circuit equipment including computer hosts, power supplies, charging piles, etc., and specifically to a liquid cooling radiator and a heat sink thereof. Background Art

[0002] With the development of science and technology, the power consumption of electrical equipment such as computers and charging piles has gradually increased, and their heat dissipation needs have become increasingly urgent. There are three major types of radiators on the market, but the effects are not good. They are: 1. Passive radiators, which only have heat sinks and insufficient heat dissipation capacity; 2. Air-cooled radiators, which add fans to the heat sinks to enhance the heat dissipation capacity but also have large wind noise; 3. Liquid-cooled radiators. Although liquid-cooled radiators can greatly alleviate the heating problem, the common liquid-cooled radiators on the market are integrated liquid-cooled radiators with low water pump power, resulting in small flow rates. The heat sinks currently installed on personal computers have structural problems that cause the gas in the cold liquid to gather in the heat sink, and even half of the space in the heat sink is gas, which seriously affects the heat dissipation capacity of the heat sink. At the same time, when negative pressure heat dissipation is used, the gas in the heat sink will change in volume due to pressure changes, interfering with the overall effect of negative pressure heat dissipation. Summary of the invention

[0003] In view of the above drawbacks, a liquid cooling radiator and a heat sink thereof are proposed to solve the problem of gas accumulation in the heat sink.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] Disclosed is a heat sink, comprising a plurality of parallelly arranged pipes through which cold liquid can pass without leakage, the pipes being made of a heat-conducting material including copper or aluminum, a first water chamber and a second water chamber being sealed and connected at both ends of the pipes, the first water chamber being connected to all the pipes, the second water chamber being separated into a liquid inlet chamber and a liquid outlet chamber by a partition, the liquid inlet chamber being connected to part of the pipes and being provided with a liquid inlet, the liquid outlet chamber being connected to the remaining pipes and being provided with a liquid outlet, cold liquid enters the liquid inlet chamber through the liquid inlet, passes through the pipes to reach the first water chamber, passes through the remaining pipes to reach the liquid outlet chamber, and finally flows out from the liquid outlet, the partition being provided with at least one through hole through which gas can pass, so that the gas in the liquid inlet chamber and the liquid outlet chamber can circulate with each other, and when some or all of the through holes are vertically placed higher than the pipes and the first water chamber is lower than the second water chamber in altitude, the top altitude of the liquid outlet chamber is lower by any value within a range of 0-9 mm.

[0006] In at least one specific embodiment of the present invention, the area of ​​each through hole is any value within the range of 0-1 square centimeter.

[0007] In at least one specific embodiment of the present invention, the height of the protruding portion of the liquid outlet at the inner end of the liquid outlet cavity is any value within a range of 0-9 mm.

[0008] In at least one specific embodiment of the present invention, the altitude of some or all of the through holes is lower than the altitude of the top of the liquid outlet cavity by any value within a range of 0-9 mm when the heat sink is placed horizontally and the liquid outlet is facing upward.

[0009] In at least one specific embodiment of the present invention, the altitude of some or all of the through holes is lower than the altitude of the top of the liquid outlet cavity by any value within a range of 0-9 mm when the heat sink is placed horizontally and the liquid outlet is facing downward.

[0010] In at least one specific embodiment of the present invention, a secondary tube is included, one end of which is connected to the liquid outlet at the inner end of the liquid outlet cavity, and the other end surface is at a distance from the top of the inner side of the liquid outlet cavity within a range of 0-9 mm.

[0011] In at least one specific embodiment of the present invention, the secondary pipe is detachable.

[0012] In at least one specific embodiment of the present invention, the second water chamber is provided with an adjusting device, and the adjusting device fixes the adjusting member including a plug or a spacer in the second water chamber to adjust the size of the through hole or close it by arranging a mounting member including a stud or a screw hole or a plug or a buckle outside the second water chamber, and isolates the second water chamber from the external atmospheric pressure by a sealing ring or a sealant, or at least one of the mounting member and the adjusting member is a magnet and the other is a magnetized member, and the mounting member outside the second water chamber controls the position of the adjusting member in the second water chamber.

[0013] Disclosed is a liquid cooling radiator, comprising any one of the above-mentioned heat sinks.

[0014] The beneficial effects of the present invention are:

[0015] By setting a through hole at the upper part of the heat sink partition, when the heat sink is vertically set with the inlet and outlet on the top, the gas inside it directly passes through the through hole from the liquid inlet cavity to the liquid outlet cavity, avoiding accumulation in the liquid inlet cavity or even in the pipeline and causing adverse effects. By setting an adjustment device to adjust the size of the through hole to adapt to water pumps of different powers, most of the cold liquid in the heat sink can reach the liquid outlet cavity from the liquid inlet cavity through the pipeline, while the gas only reaches the liquid outlet cavity from the liquid inlet cavity. By limiting the height of the protrusion, the gas will not accumulate in the inlet and outlet cavity when the heat sink is placed horizontally with the inlet and outlet facing upward. By adding a secondary pipe, the gas will not accumulate in the inlet and outlet cavity when the heat sink is placed horizontally with the inlet and outlet facing downward. By disassembling and assembling the secondary pipe, it can adapt to the installation mode with the inlet and outlet facing upward or downward at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a preferred overall structural diagram of a vertically arranged heat sink.

[0017] Figure 2 This is a preferred structural diagram of a heat sink placed horizontally with the liquid outlet facing upward.

[0018] Figure 3 This is a preferred structural diagram of a heat sink placed horizontally with the liquid outlet facing downward.

[0019] Figure 4 The preferred structural diagram is when the adjusting device is a screw hole and a stud.

[0020] Figure 5 A preferred structural diagram of an adjusting device is a magnetic body.

[0021] Description of main reference numerals:

[0022] 1-first water chamber, 2-second water chamber, 21-liquid inlet chamber, 211-liquid inlet, 22-liquid outlet chamber, 221-liquid outlet, 222-protrusion, 223-auxiliary pipe, 23-partition, 231-through hole, 232-screw hole, 233-studding, 234-magnetic adjusting part, 235-magnetic mounting part, 3-pipeline. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings or embodiments can be obtained based on these drawings or embodiments without creative efforts. All other embodiments obtained by ordinary technicians in this field without creative efforts belong to the scope of protection of the present invention.

[0024] At least one specific embodiment of the present invention is Figure 1 As shown, the heat sink comprises a first water chamber 1, a second water chamber 2 and parallel arranged pipelines 3, which are interconnected to form a sealed liquid path for the flow of cooling liquid. The first water chamber 1 is sealed and connected to all pipelines 3, and the second water chamber 2 is divided into a liquid inlet chamber 21 and provided with a liquid inlet 211 and a liquid outlet chamber 22 and provided with a liquid outlet 221 by a partition 23. The liquid inlet chamber 21 is sealed and connected to part of the pipelines 3, and the liquid outlet chamber 22 is sealed and connected to the remaining pipelines 3. A through hole 231 is provided on the top of the partition 23. When the cooling liquid contains gas and passes through the heat sink, the gas can directly pass through the through hole 231 from the liquid inlet chamber 21 to the liquid outlet chamber 22, so as to avoid the gas in the cooling liquid accumulating in the liquid inlet chamber 21 and the pipeline 3 connected to the liquid inlet chamber 21 when the cooling liquid flow rate is too low and the cooling radiator is placed vertically and the liquid inlet 211 and the liquid outlet 221 are located on the upper side, causing this part of the pipeline 3 to reduce or even lose the cooling efficiency of the cooling liquid.

[0025] like Figure 2 , 3As shown, the through holes 231 are respectively arranged at two corners of the partition 23, and cooperate with the auxiliary pipe to make the heat sink vertically installed with the liquid inlet and outlet on top, horizontally installed with the liquid inlet and outlet facing upward, or horizontally installed with the liquid inlet and outlet facing downward, which can greatly alleviate the problem of gas accumulation in the heat sink.

[0026] like Figure 2 As shown, when the liquid outlet 221 faces upward, the height of the protruding portion 222 of the liquid outlet 221 at the inner end of the liquid outlet cavity 22 is less than 5 mm, so that the gas accumulated in the second water chamber 2 can flow out of the heat sink smoothly.

[0027] like Figure 3 As shown, when the liquid outlet 221 faces downward, the liquid outlet 221 is provided with a sub-tube 223, one end of which is connected to the liquid outlet 221, and the other end of which penetrates into the liquid outlet cavity 22 and is less than 5 mm from the top thereof, so that the gas accumulated in the second water chamber 2 can flow out of the heat sink smoothly.

[0028] like Figure 4 The figure shows a preferred structural diagram of an adjusting device, wherein the adjusting device comprises a screw hole 232 and a stud 233, wherein the screw hole 232 is provided on the wall of the second water chamber 2, and the stud 233 is installed in the screw hole 232 and the flow rate of the through hole 231 is adjusted by changing the area of ​​the through hole 231 covered by the installation depth of the stud.

[0029] Preferably, the stud 233 can also be replaced with a spacer, one end of which is located near the through hole 231 in the liquid inlet cavity 21, and the other end is located outside the second water chamber 2. The area of ​​the through hole 231 covered is changed by changing the position of the spacer to adjust the flow rate of the through hole 231.

[0030] like Figure 5 The figure shows a preferred structural diagram of an adjusting device, wherein the adjusting device includes a magnetic adjusting member 234 in the liquid outlet cavity 22 and a magnetic mounting member 235 outside the second water chamber 2, wherein the adjusting member 234 and the mounting member 235 are connected by magnetic force, and the position of the mounting member 235 is changed to change the position of the adjusting member 234, thereby changing the area of ​​the through hole 231 covered to change the flow rate of the through hole 231, while avoiding the airtightness problem caused by the opening of the second water chamber.

[0031] After adopting the above scheme, the volume of gas accumulated inside the heat sink when the cold liquid flow is insufficient and the heat sink is placed in a fixed direction is greatly reduced, thereby avoiding the heat dissipation capacity of the heat sink due to the accumulated gas and avoiding excessive gas accumulation in the heat sink, thereby affecting the effect of the negative pressure liquid cooling radiator. In addition, the size of the through hole is adjusted to adapt to liquid cooling radiators with different cold liquid flow rates, thereby improving the versatility of the heat sink.

[0032] The above description is only preferably used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art can still make other modifications to the technical solution of the present invention or replace some of the technical features therein with equivalents, or split or merge some of them. Any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the technical solution of the present invention are all covered by the protection scope of the present invention.

Claims

1. A heat sink, comprising a plurality of parallel arranged pipes through which cold liquid can pass without leakage, the pipes being made of heat-conducting materials including copper or aluminum, the two ends of the pipes being sealed and connected with a first water chamber and a second water chamber, the first water chamber being connected to all the pipes, the second water chamber being separated into a liquid inlet chamber and a liquid outlet chamber by a partition, the liquid inlet chamber being connected to part of the pipes and having a liquid inlet, the liquid outlet chamber being connected to the remaining pipes and having a liquid outlet, the cold liquid entering the liquid inlet chamber through the liquid inlet, passing through the pipes to reach the first water chamber, passing through the remaining pipes to reach the liquid outlet chamber, and finally flowing out from the liquid outlet, characterized in that: The partition is provided with at least one through hole through which gas can pass so that the gas in the liquid inlet chamber and the liquid outlet chamber can circulate with each other. When some or all of the through holes are placed vertically at an altitude higher than the pipeline and the first water chamber is lower than the second water chamber, the top altitude of the liquid outlet chamber is lower by any value within the range of 0-9 mm.

2. The heat sink according to claim 1, characterized in that: The area of ​​each through hole is any value within the range of 0-1 square centimeter.

3. The heat sink according to claim 1, characterized in that: The liquid outlet protrudes from the inner wall of the liquid outlet cavity by any value within a range of 0-9 mm at the inner end of the liquid outlet cavity.

4. The heat sink according to claim 1, characterized in that: The altitude of part or all of the through holes is lower than the altitude of the top of the liquid outlet cavity by any value within the range of 0-9 mm when the heat sink is placed horizontally and the liquid outlet faces upward.

5. The heat sink according to claim 1, characterized in that: The altitude of part or all of the through holes is lower than the altitude of the top of the liquid outlet cavity by any value within the range of 0-9 mm when the heat sink is placed horizontally and the liquid outlet is facing downward.

6. The heat sink according to claim 1, characterized in that: It comprises a secondary tube, one end of which is connected to the liquid outlet at the inner end of the liquid outlet cavity, and the distance between the end surface of the other side and the top of the inner side of the liquid outlet cavity is any value within 0-9mm.

7. The heat sink according to claim 6, characterized in that: The secondary pipe is detachable.

8. The heat sink according to claim 1, characterized in that: The second water chamber is provided with an adjusting device, and the adjusting device fixes the adjusting member in the second water chamber by arranging a mounting member outside the second water chamber to adjust the size of the through hole or close it, the mounting member includes a stud or a screw hole or a plug or a buckle, and the adjusting member includes a plug or a spacer, and the second water chamber is isolated from the external atmospheric pressure by a sealing ring or a sealant, or at least one of the mounting member and the adjusting member is a magnet and the other is a magnetized member, and the mounting member outside the second water chamber controls the position of the adjusting member in the second water chamber.

9. A liquid cooling radiator, characterized in that: A heat sink comprising any one of claims 1-8.

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