Patent ID: 12250790

DETAILED DESCRIPTION OF THE EMBODIMENTS

Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the drawings. The same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

In the description of the present disclosure, it should be noted that the terms center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc., indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or be constructed and operate in a particular orientation, so it should not be understood as a limitation of the present disclosure. In addition, the terms “first” and “second” are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. The terms “first position” and “second position” are two different positions.

In the present disclosure, unless otherwise expressly specified and limited, the terms “mount”, “connect”, “contact”, “fix” and other terms should be understood in a broad sense, for example, they can be fixed connections, removable connections, or integrated. It can be mechanical connection or electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the connection within two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific situation.

The technical solutions of the present disclosure will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown inFIGS.1to5, according to an embodiment, a liquid cooling device is provided, which includes a base plate1, a cooling body2, and a cover plate3. The base plate1is configured to be provided on a heat source (not shown), the cooling body2is provided on a side of the base plate1away from the heat source. The cooling body2includes a frame21, a cooling layer211, and a reflux layer212. The frame21is a substantially rectangular ring. The cooling layer211is located in and surrounded by the frame21, and the reflux layer212is provided above the cooling layer211. The cooling layer211is provided with a plurality of cooling channels213extending from a center portion of the cooling body2to the frame21. The reflux layer212is provided with a plurality of reflux channels214in communication with the plurality of cooling channels213. A periphery of the reflux layer212is provided with a drainage flow channel215in communication with the plurality of reflux channels214. The cover plate3is provided on a side of the cooling body2away from the base plate1. A center portion of the cover plate3is provided with a liquid inlet32in communication with the plurality of cooling channels213, and the cover plate3is further provided with a liquid outlet33in communication with the drainage flow channel215.

By providing the cooling body2between the base plate1and the cover plate3, the heat source under the base plate1can be cooled. The cooling layer211and the reflux layer212are provided in the frame21of the cooling body2, so that coolant entering the cooling body2through the liquid inlet32of the cover plate3can flow to the cooling layer211by gravity, so as to cool the heat source, which does not require a high-power pump, thus saving a cooling cost. Since the reflux layer212is located above the cooling layer211, the coolant located in the lower portion of the cooling layer211can be fully utilized, and the utilization rate of the coolant can be effectively improved. In addition, by providing the liquid inlet32at the center portion of the cooling body2and providing the drainage flow channel215and the liquid outlet33at the frame21, the coolant can firstly cool a center portion of the heat source, so that the cooling effect for the heat source with a high central heat generation is improved.

As an alternative embodiment, a center portion of the cooling body2is provided with a liquid inlet32channel216in communication with the liquid inlet32and the cooling channel213. By providing the liquid inlet32channel216, the flowing of the coolant between the liquid inlet32and the reflux layer212can be effectively avoided, so that the coolant entering through the liquid inlet32can flow into the cooling layer211directly, then diffuse through the cooling channel213, and finally flows out of the liquid outlet33of the cover plate3through the reflux layer212.

Specifically, the cooling layer211includes a plurality of partition structures22extending from the center portion of the cooling body2to the frame21. The cooling channel213is formed between adjacent two partition structures22. By providing the partition structures22extending from the center portion of the cooling body2to the frame21, the cooling channel213also extends from the center portion of the cooling body21to the frame21, which is beneficial to speed up the diffusion speed of the coolant, so as to reduce a flow resistance.

Further, the partition structure22includes a partition rib221extending from the center portion of the cooling body2to the frame21and a plurality of partition blades222provided on both sides of the partition rib221. An end of the partition blade222away from the partition rib221extends toward the center portion of the cooling body2. When the coolant enters the cooling channel213through the liquid inlet32channel216, the coolant can flow sequentially between the plurality of partition blades222, which effectively improves the flow efficiency of the coolant. A cooling position217in communication with the cooling channel213is formed between adjacent two partition blades222. The cooling position217can ensure sufficient heat exchange between the coolant and the heat source, and the cooling position217can help to increase the diffusion speed of the coolant from the center portion of the cooling body2to the frame21, thereby reducing the flow resistance.

It should be noted that the coolant in the cooling position217will gradually accumulate until a height of the coolant reaches the reflux layer212. The coolant in the cooling position217will form a convection. The coolant with a higher temperature has a lower density and will generate a lifting force, so as to be located in an upper portion of the cooling body2. On the one hand, the circulation of coolant in cooling position217can be promoted, and on the other hand, the coolant with higher temperature can be refluxed first, so that the coolant just entering the cooling position217can fully exchange heat with the heat source, and the utilization rate of the coolant is improved.

Further, at least one of the liquid inlet32and the liquid outlet33is provided with a quick-connect joint31, so that the coolant can enter or flow out of the liquid cooling device, and the assembly and disassembly of the liquid cooling device can be more convenient. In an embodiment, the quick-connect joints31of the liquid inlet32and the liquid outlet33adopts a nut and cone design, which is beneficial to minimize the possibility of leakage.

In this embodiment, a height of the cooling layer211is about 3.5 to about 4.5 times of a height of the reflux layer212, such that there is enough coolant to exchange heat with the heat source and ensure the heat exchange effect.

As an alternative embodiment, the reflux layer212is provided with a plurality of guiding blades23. The reflux channel214is formed between adjacent two guiding blades23. The guiding blade23and the partition blade222are overlapped, so that the coolant in the cooling position217can directly enter the reflux channel214between the adjacent two guiding blades23after rising. The guiding blades23are not only configured to enclose the reflux channel214, but also can guide the reflux of the coolant, so that the refluxed coolant can flow to the drainage flow channel215adjacent to the frame21as soon as possible.

Further, the drainage flow channel215is formed between the guiding blades23adjacent to the frame21and the frame21. The drainage flow channel215is in communication with the reflux channel214. The coolant in the reflux channel214flows to the drainage flow channel215and finally flows out of the liquid cooling device through the liquid outlet33of the cover plate3.

In an embodiment, a width of the drainage flow channel215adjacent to the liquid outlet33is greater than a width of the drainage flow channel215away from the liquid outlet33, which is more beneficial for the coolant to be discharged from the liquid cooling device.

In this embodiment, the partition structures22and the frame21are integrally formed, which facilitates the processing of the partition structure22. The guiding blade23and the partition structures22are also integrally formed, so that the overall thickness of the partition structure22and the guiding blade23is increased, and the strength is improved. The partition structure22and the guiding blade23can be used as a framework of the liquid cooling device, and the reliability of the liquid cooling device is increased.

In an embodiment, the cooling body2is made of aluminum or copper to ensure higher heat exchange efficiency. The above-mentioned integral molding may be aluminum extrusion molding. During processing, the drainage flow channel215can be processed by a milling machine, and the drainage flow channel215adjacent to the liquid outlet33can be milled off more pair of guiding blades23, so that the width of the drainage flow channel215adjacent to the liquid outlet33is greater than the width of the drainage flow channel215away from the liquid outlet33.

In an embodiment, the cover plate3is welded to the cooling body2. The base plate1may be also welded to the cooling body2. Since the welding connection is firm, the leakage of the coolant can be effectively avoided.

Further, the base plate1is provided with a mounting groove11, and the cooling body2is mounted in the mounting groove11. The mounting groove11can help to the positioning of the cooling body2and the base plate1, and can also help to the sealing of the frame21.

Optionally, in order to assemble the liquid cooling device, a periphery of the base plate1is provided with a plurality of mounting holes12, and the liquid cooling device further includes a plurality of mounting assemblies13provided in the mounting holes12. The plurality of mounting assemblies13are configured to be connected to the heat source. During assembling, a center portion of the liquid cooling device can be located on a portion of the heat source where generates the most heat to improve the cooling effect, and the liquid cooling device also has the advantages of small pressure drop and more reliable structure.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope of this description.

The foregoing descriptions are merely specific embodiments of the present disclosure, but are not intended to limit the protection scope of the present disclosure. It should be pointed out that any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present disclosure shall all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the appended claims.