A new type of heat exchange device for liquid cooling radiator

Abstract

The present invention relates to the field of chip cooling technology, and more specifically, it relates to a novel heat exchange device for a liquid-cooled radiator. During use, the cold liquid cooled by the cold row first flows into the water collecting tank, and then flows into the micro-water channel synchronously from the water inlets on both sides of the micro-water channel and the two water inlet channels. Since the water inlet directions of the two water inlet channels and the water inlet directions of the water inlets on both sides of the micro-water channel intersect in a one-to-one correspondence, the water flow in the micro-water channel forms an intersecting water flow, which can slow down the water flow velocity to a certain extent and form multiple water flow vortices in the micro-water channel. The water flow layer on the surface of the cold liquid is continuously replaced with the water flow layer on the bottom layer of the cold liquid under the drive of the water flow vortex, so that the cold liquid can fully absorb the heat on the bottom plate of the cold head, and finally gather together through the water outlet channel to flow out of the water collecting tank, so as to achieve the purpose of improving the heat exchange efficiency of the chip.

Description

Technical Field

[0001] The present invention relates to the technical field of chip cooling, and more specifically, to a novel heat exchange device for a liquid cooling radiator. Background Art

[0002] As the power consumption of chips such as CPU and GPU increases, a large amount of heat will be generated during operation. It is imperative to use a radiator to quickly remove the surface heat, thereby reducing the internal temperature of the chip and ensuring the stable and long-term normal operation of the chip.

[0003] At present, the main types of chip cooling are air cooling and liquid cooling. The biggest features of liquid cooling are: balanced chip heat and low noise operation.

[0004] Since water has a large specific heat capacity and low cost, the liquid in liquid cooling is water. Because it can absorb a large amount of heat, the temperature of the chip will not change significantly. In the heat dissipation mode of the liquid cooling radiator, the temperature of the chip can be well controlled. Even if there is a sudden high-energy consumption operation, it will not cause a sharp change in the internal temperature of the chip.

[0005] In addition, the surface area of ​​the heat exchanger is large, so only a low-speed fan is needed to dissipate heat to achieve good results. Therefore, liquid cooling is combined with a low-speed fan, and the heat is directly discharged out of the box through the fan, thereby reducing the temperature rise of other components in the box. The two-pronged heat dissipation mode is bound to be the future trend of radiator heat dissipation.

[0006] The working principle of the current liquid cooling radiator is to bring the heat out of the chip surface through the contact between the cold head and the chip surface, transport the cooling water that has absorbed the heat to the radiator through the water pump and pipes, and then the fan of the radiator blows the heat absorbed by the cooling water out of the box.

[0007] However, in the process of removing the heat from the chip surface by contacting the cold head with the chip surface, the following two methods are mostly used at this stage, such as Figure 1 and Figure 2 As shown: 1. Cold water flows into the cold water cooled by the radiator from the middle of the cold head bottom plate, undergoes heat exchange through the micro-water channels of the cold head bottom plate, and then flows out from both sides of the cold head bottom plate; 2. Cold water flows into the cold water cooled by the radiator from both sides of the cold head bottom plate, undergoes heat exchange through the micro-water channels of the cold head bottom plate, and then flows out from the middle.

[0008] During the above two liquid cooling heat exchange processes, because the cold head base plate absorbs the heat of the chip and then transfers it to the micro-water channel on the cold head base plate, the root of the micro-water channel absorbs heat and the temperature rises and conducts it to the top of the micro-water channel. The temperature at the root of the micro-water channel is higher than the top temperature and stores more heat. However, cold water flows quickly through the micro-water channel under the action of the water pump, resulting in the heat at the root of the micro-water channel not being fully absorbed and taken away. Only the water flow that is partially in contact with the bottom of the micro-water channel can take out part of the heat.

[0009] According to the second law of thermodynamics and the definition of heat exchange, in a natural state, heat can only be transferred from a hot place to a cold place, that is, heat exchange can be carried out as long as there is a temperature difference. The greater the temperature difference, the greater the energy of heat exchange. Therefore, it can be concluded that since the heat exchange between the top of the micro-channel and the root of the micro-channel is less than that at the root of the micro-channel, the existing liquid cooling belt is not sufficiently heated, resulting in a significant reduction in the heat exchange efficiency of the chip. Summary of the invention

[0010] In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a new type of heat exchange device for a liquid-cooled radiator, which has the advantages of slowing down the flow rate of water, forming a water vortex in the micro-water channel and improving the heat exchange efficiency of the chip.

[0011] The above technical objectives of the present invention are achieved through the following technical solutions: a new type of heat exchange device for a liquid-cooled radiator, comprising a cold head base plate, a water collecting trough arranged in the cold head base plate, and a micro-water channel arranged in the water collecting trough, wherein a plurality of water inlet channels and a plurality of water outlet channels are opened on the surface of the micro-water channel, and water is synchronously introduced into the plurality of water inlet channels and the water inlets on both sides of the micro-water channel to form an intersecting water flow in the water collecting trough, which flows out in a concentrated manner from the water outlet channel.

[0012] Preferably, a plurality of the water inlet channels are arranged around the water outlet channel, and the water inlet channel opening and the water outlet channel opening are both arranged in a "V" shape.

[0013] Preferably, the bottom surface of the water collecting trough is arranged in an arc-shaped concave surface.

[0014] Preferably, it also includes a water distribution plate and a sealing plate which are sequentially arranged on the cold head bottom plate, the inner wall of the water distribution plate abuts against the surface of the micro-water channel to preliminarily form a first inner cavity for water flow to flow in the micro-water channel, the sealing plate is buckled on the cold head bottom plate to form a second inner cavity for water flow to flow in the water collecting tank, and the water distribution plate and the sealing plate are respectively provided with channels which are connected to the water inlet channel and the water outlet channel in a one-to-one correspondence.

[0015] Preferably, guide angles are respectively provided on both sides of the water diversion plate close to the water inlet of the micro-water channel.

[0016] Preferably, the micro-channel water inlet is arranged at an inclined angle.

[0017] Preferably, one of the channels of the water distribution plate extends outwardly to have a channel mouth that abuts against the surface of the water outlet channel.

[0018] Preferably, the water inlet channel opening, the water outlet channel opening and the channel mouth are respectively arranged in a square shape or an arc shape.

[0019] To sum up, the present invention has the beneficial effect: during use, the cold liquid cooled by the cold row first flows into the water collecting tank, and then flows into the micro water channel synchronously from the water inlets on both sides of the micro water channel and the two water inlet channels. Since the water inlet directions of the two water inlet channels and the water inlet directions of the water inlets on both sides of the micro water channel intersect in a one-to-one correspondence, the water flow in the micro water channel forms an intersecting water flow, which can slow down the water flow velocity to a certain extent and form multiple water flow vortices in the micro water channel. The water flow layer on the surface of the cold liquid is continuously replaced with the water flow layer on the bottom layer of the cold liquid under the drive of the water flow vortex, so that the cold liquid can fully absorb the heat on the bottom plate of the cold head, and finally gather together through the water outlet channel to flow out of the water collecting tank, so as to achieve the purpose of improving the heat exchange efficiency of the chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is solution 1 of the background technology of the present invention;

[0021] Figure 2 This is the second solution of the background technology of the present invention;

[0022] Figure 3 is a schematic diagram of water flow direction in an embodiment of the present invention;

[0023] Figure 4 is an exploded view of an embodiment of the present invention;

[0024] Figure 5 is a cross-sectional view of an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of an embodiment of the present invention in use.

[0026] Figure numerals: 1. cold head bottom plate; 2. water collecting trough; 3. micro water channel; 31. water outlet channel; 32. water inlet channel; 4. water distribution plate; 41. first inner cavity; 42. guide angle; 43. channel mouth; 5. sealing plate; 51. second inner cavity; 6. radiator; 7. cold head. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0029] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] A new type of heat exchange device for liquid cooling radiator, see Figure 3 , including a cold head base plate 1, a water collecting tank 2 arranged in the cold head base plate 1, and a micro water channel 3 arranged in the water collecting tank 2. The surface of the micro water channel 3 is provided with a plurality of water inlet channels 32 and a plurality of water outlet channels 31. The plurality of water inlet channels 32 and the water inlets on both sides of the micro water channel 3 are synchronously fed with water to form an intersecting water flow in the micro water channel 3, and the water flows out in a concentrated manner from the water outlet channel 31.

[0032] During use of this embodiment, the cold liquid cooled by the cold row 6 first flows into the water collecting tank 2, and then flows into the micro water channel 3 synchronously from the water inlets on both sides of the micro water channel 3 and the two water inlet channels 32. Since the water inlet directions of the two water inlet channels 32 and the water inlet directions of the water inlets on both sides of the micro water channel 3 intersect in a one-to-one correspondence, the water flow in the micro water channel 3 forms an intersecting water flow, which can slow down the water flow velocity to a certain extent and form multiple water flow vortices in the micro water channel 3. Driven by the water flow vortices, the water flow layer on the surface of the cold liquid is continuously replaced with the water flow layer on the bottom layer of the cold liquid, so that the cold liquid can fully absorb the heat on the cold head bottom plate 1, and finally gather together through the water outlet channel 31 to flow out of the water collecting tank 2, so as to achieve the purpose of improving the heat exchange efficiency of the chip.

[0033] The cooling liquid in this embodiment is water. As mentioned in the background technology of the present invention, water is favored by users due to its large specific heat capacity and low cost. Of course, the cooling liquid is not limited to water, but can also be a mixed liquid of water and antifreeze, or other liquids with large heat capacity and slow temperature rise.

[0034] For details, see Figure 4 A plurality of water inlet channels 32 are arranged around the water outlet channel 31, and the openings of the water inlet channels 32 and the openings of the water outlet channels 31 are both arranged in a "V" shape.

[0035] Taking into account the formation of water vortex, it is inevitable to set up an intersection structure between the water inlet direction of the water inlet channel 32 and the water inlet direction of the micro-water channel 3. For this purpose, the two water inlet channels 32 are arranged around the water outlet channel 31, which can limit the water flow to complete the intersection of the water flow before flowing out through the water outlet channel 31, and then flow out of the micro-water channel 3.

[0036] Of course, the two water inlet channels 32 do not necessarily have to be arranged around the water outlet channel 31, otherwise, the efficiency of heat exchange will be greatly reduced.

[0037] Among them, the opening of the water inlet channel 32 and the opening of the water outlet channel 31 are both set in a "V" shape, which can expand the opening of the water inlet channel 32 to a certain extent and increase the circulation of water flow. Conversely, the setting of the opening of the water outlet channel 31 can limit the circulation of water flow. Of course, the water inlet channel 32 and the water outlet channel 31 can also be set in a square groove, an arc groove or other shapes to meet the above-mentioned water inlet channel 32 to increase the circulation of water flow and the above-mentioned water outlet channel 31 to reduce the circulation of water flow.

[0038] For details, see Figure 5 The bottom surface of the water collecting tank 2 is an arc-shaped concave surface.

[0039] This arrangement can further expand the accommodating area at the bottom of the water collecting tank 2. The more water there is, the more heat will be displaced.

[0040] In addition, the provision of the arc-shaped concave surface reduces the thickness of the cold head bottom plate 1 and improves the heat conduction efficiency of the cold head bottom plate 1 .

[0041] In addition, considering the strength of the hardness of the cold head bottom plate 1 itself, the arc-shaped concave surface of this embodiment adopts a design scheme of being thin in the middle and thick on both sides to further maintain the hardness of the cold head bottom plate 1 itself.

[0042] For details, see Figure 4, and also includes a water dividing plate 4 and a sealing plate 5 which are sequentially arranged on the cold head bottom plate 1. The inner wall of the water dividing plate 4 abuts against the surface of the micro water channel 3 to preliminarily form a first inner cavity 41 for water flow to flow in the micro water channel 3. The sealing plate 5 is buckled on the cold head bottom plate 1 to form a second inner cavity 51 for water flow to flow in the water collecting tank 2. The water dividing plate 4 and the sealing plate 5 are respectively provided with channels which are connected to the water inlet channel 32 and the water outlet channel 31 in a one-to-one correspondence.

[0043] After the heat exchange, the cold liquid flows out in the water outlet channel 31, and passes through the water dividing plate 4 and the sealing plate 5 in turn. The sealing plate 5 is buckled on the cold head bottom plate 1 to form a second inner cavity 51 for water to flow through the water collecting tank 2, so that the cold liquid can circulate in the second inner cavity 51, providing a sealed space for the circulation of the cold liquid. The inner wall of the water dividing plate 4 is in contact with the surface of the micro water channel 3 to preliminarily form a first inner cavity 41 for water to flow through the micro water channel 3. The first inner cavity 41 is located in the second inner cavity 51, so as to separate the water flow in the micro water channel 3 from the external water flow area of ​​the second inner cavity 51, and fully utilize the micro water channel 3 to perform heat exchange of the cold liquid without affecting it.

[0044] The sealing plate 5 is made of silica gel. The sealing plate 5 made of silica gel has not only strong sealing performance but also good heat insulation effect.

[0045] Specifically, the water divider 4 is provided with guide angles 42 on both sides close to the water inlet of the micro water channel 3. The guide angles 42 are provided to intentionally guide the direction of water flow, and the extension of the guide angles 42 is used to reduce the diameter of the water inlet of the micro water channel 3, so that the cold liquid intentionally flows toward the bottom of the micro water channel 3 when flowing into the micro water channel 3.

[0046] Specifically, the water inlet of the micro-water channel 3 is arranged at an inclined angle, which is convenient for the installation of the guide angle 42 and allows the cooling liquid to fully contact the side of the micro-water channel 3.

[0047] Specifically, one of the channels of the water dividing plate 4 extends outward to form a channel mouth 43 that abuts against the surface of the water outlet channel 31 .

[0048] The channel mouth 43 is in contact with the surface of the water outlet channel 31 , which effectively slows down the water flow in the water outlet channel 31 , and also allows the water flow at the bottom of the micro-water channel 3 to have sufficient time for heat exchange.

[0049] The channel nozzle 43 of this embodiment is set in a "V" shape. In addition to the above-mentioned function of limiting the water flow rate, it can also abut and cooperate with the micro water channel 3. The channel nozzle 43 is inserted into the water outlet channel 31 to facilitate the fixation and installation of the water distribution plate 4.

[0050] like Figure 6 As shown, the cold liquid flowing out through the channel nozzle 43 moves toward the cold row 6 under the guidance of the conduit, and after being cooled by the cold row 6, returns to the cold head 7, so that the chip is cooled repeatedly to ensure the normal operation of the chip.

[0051] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A new type of heat exchange device for a liquid cooling radiator, comprising a cold head bottom plate, a water collecting tank arranged in the cold head bottom plate And a micro-water channel arranged in the water collecting tank, characterized in that: The surface of the micro-water channel is provided with a plurality of water inlet channels and a plurality of water outlet channels, and water is simultaneously introduced into the plurality of water inlet channels and the water inlets on both sides of the micro-water channel to form a convergent water flow in the micro-water channel, and then the water flows out in a concentrated manner from the water outlet channels; A plurality of the water inlet channels are arranged around the water outlet channel, and the water inlet channel opening and the water outlet channel opening are both arranged in a "V" shape; It also includes a water distribution plate and a sealing plate which are sequentially arranged on the cold head bottom plate, the inner wall of the water distribution plate abuts against the surface of the micro-water channel to preliminarily form a first inner cavity for water flow to flow in the micro-water channel, the sealing plate is buckled on the cold head bottom plate to form a second inner cavity for water flow to flow in the water collecting tank, and the water distribution plate and the sealing plate are respectively provided with channels which are connected to the water inlet channel and the water outlet channel in a one-to-one correspondence.

2. According to claim 1, a novel heat exchange device for a liquid cooling radiator is characterized in that: The bottom surface of the water collecting tank is arranged in an arc-shaped concave surface.

3. According to claim 1, a novel heat exchange device for a liquid cooling radiator is characterized in that: The water diversion plate is provided with guide angles on both sides close to the water inlet of the micro-water channel.

4. The novel heat exchange device for liquid cooling radiator according to claim 3 is characterized in that: The micro-water channel water inlet is arranged at an inclined angle.

5. The novel heat exchange device for liquid cooling radiator according to claim 1 is characterized in that: A channel of the water distribution plate extends outward to form a channel mouth which is in contact with the surface of the water outlet channel.

6. The novel heat exchange device for liquid cooling radiator according to claim 5 is characterized in that: The water inlet channel opening, the water outlet channel opening and the channel mouth are respectively arranged in a square shape or an arc shape.

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