CN115332203A - Uniform-temperature copper pipe liquid cooling plate and processing method thereof - Google Patents

Abstract

The invention discloses an isothermal copper tube liquid-cooling plate and a processing method thereof, comprising a plate body and a liquid-cooling flow channel arranged in the plate body. The plate body includes a double-layer plate body, and the liquid-cooling flow channel is arranged between the double-layer plate bodies. The liquid-cooling flow channel includes a zigzag-shaped cold flow channel. The opening is connected with a liquid exchange mechanism, and the liquid exchange mechanism includes a liquid suction pump, a liquid addition pump and a refrigerator connected between the two. The advantage of the present invention is that each channel of the zigzag cold flow channel The refrigerant in the independent branch pipe can be replaced at the opening of the bend, so as to ensure that the temperature uniform copper tube liquid-cooling plate will not have the problem that the local temperature is too high and the cooling efficiency is reduced.

Description

A uniform temperature copper tube liquid cold plate and its processing method

technical field

The invention relates to the field of liquid cold plates, in particular to a uniform temperature copper tube liquid cold plate and a processing method thereof.

Background technique

The liquid cold plate has excellent heat dissipation performance. It is a device with medium and high power density. The liquid cold plate can effectively take away the heat dissipation in power devices, printed circuit board assemblies or extension equipment. Existing liquid cold plates such as the "liquid cold plate for cooling electronic components" disclosed in Chinese patent CN105658027A, the liquid cold plate includes a liquid cold plate base, one side of the liquid cold plate base is provided with a cooling liquid channel, while the cooling liquid A cover plate is arranged on the side where the road is located. When in use, the power element, that is, the heating element, is fixed on the liquid cooling plate, and the heat generated by the heating element is transferred to the liquid cooling plate, and the cooling medium flowing through the cooling liquid channel takes away the heat to realize heat dissipation.

With the advancement of optoelectronic technology, optoelectronic products continue to develop in the direction of multi-function and portability. The former makes the integration of unit electronic chips continue to increase, while the latter makes the volume of packaged devices continue to shrink and the number of chips continues to increase. What followed was a huge rise in the heat generation of electronic chips. Due to the limitation of the thermal conductivity of the material of the liquid cold plate itself, the large amount of heat generated will cause the temperature of the electronic device to be too high, the temperature distribution will be uneven, and the temperature will be too concentrated. Thermal stress and thermal strain will be generated inside the heating element, which will easily cause damage to the electronic device. Fatigue damage or permanent deformation directly affects the stability and reliability of the device, and seriously affects its working efficiency and service life.

Contents of the invention

Purpose of the invention: The purpose of the invention is to provide a uniform temperature copper tube liquid cooling plate and its processing method for the deficiencies of the prior art.

Technical solution: A uniform temperature copper tube liquid cooling plate according to the present invention includes a plate body and a liquid cooling flow channel arranged in the plate body, the plate body includes a double-layer plate body, and the liquid cooling flow channel is arranged in the Between the double-layer plates, the liquid-cooled runner includes a zigzag cold runner, and an opening is provided at the corner of the zigzag cold runner, and the opening is connected with a liquid changing mechanism, and the liquid changing mechanism includes A suction pump, a liquid filling pump and a refrigerator connected between them.

Preferably, a Y-shaped branch pipe is connected to the opening, and the two branch pipe ports of the Y-shaped branch pipe are respectively connected to the suction pump and the liquid filling pump.

Preferably, both branch ports of the Y-shaped branch pipe are provided with one-way stop valves.

Preferably, the connection between the opening and the Y-shaped branch pipe is provided with a sealing gasket that fits the zigzag cold runner, the Y-shaped branch pipe and the plate body.

A method for processing a uniform temperature copper tube liquid cold plate, comprising the following steps:

S1. Take the aluminum base plate and cut it according to the predetermined specifications to prepare the plate, and set the appropriate zigzag cold runner according to the required plate area and cut out the runner groove for installing the zigzag cold runner on the plate, and install the zigzag cold runner in the groove grinding and polishing;

S2. Set up a gasket groove with a thickness slightly thinner than the sealing gasket at the position corresponding to the sealing gasket in the tank body, and polish the inner wall of the gasket groove;

S3. Connect the sealing deposit to the opening of the zigzag cold runner, insert the Y-shaped branch pipe into the sealing gasket, and embed the whole into the tank, and align the sealing gasket with the gasket groove;

S4. Cover the side of the plate body with the groove body with a steel plate and pressurize it so that the steel plate fits the plate body completely;

S5, pour water into the Y-shaped branch pipe and close the openings of all Y-shaped branch pipes, and cool the overall device with liquid nitrogen until the water in the zigzag cold runner and the Y-shaped branch pipe is completely frozen;

S6, heat up the overall device, open the Y-shaped branch pipe opening to discharge the water;

S7. A single cut-off valve is installed at the opening of the Y-shaped branch pipe, and the two single-way cut-off valves at the two openings of the same Y-shaped branch pipe are installed in reverse;

S8. Install a liquid filling pump at the opening of the Y-shaped branch pipe at the one-way stop valve that is opened inward, and install a liquid pump at the opening of the Y-shaped branch pipe at the one-way stop valve that is opened outward, and install the liquid pump at the opening of the Y-shaped branch pipe at the one-way stop valve that is opened outward, and connect the liquid pump and the filling A refrigerator is connected between the liquid pumps.

Compared with the prior art, the present invention has the following beneficial effects: the refrigerant in each independent branch pipe of the zigzag cold runner can be replaced at the opening of the bend, and the cooling liquid in the independent branch pipe enters the Y through the opening. The Y-shaped branch pipe is sucked in by the pump and sent to the refrigerator. At the same time, the refrigerator sends the cooling liquid that has cooled down to the other opening of the Y-shaped branch pipe through the liquid feeding pump, and then sent to another independent zigzag cold runner. The branch pipe is used to cool down the next area to ensure that the uniform temperature copper tube liquid cold plate will not have the problem of excessive local temperature and reduced cooling efficiency.

Description of drawings

Fig. 1 is a schematic structural view of the device part in a uniform temperature copper tube liquid cold plate and its processing method of the present invention.

In the figure: 1. Plate body; 2. Zigzag cold runner; 3. Y-shaped branch pipe; 4. Single stop valve; 5. Suction pump; 6. Liquid filling pump; 7. Refrigerator.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and "circumferential" are based on the drawings The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the scope of the present invention. limit.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , can also be integrated; it can be mechanical connection, electrical connection, or communication connection; it can be direct connection or indirect connection through an intermediary, it can be the internal communication of two components or two components interactions, unless otherwise expressly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The technical solution of the present invention will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

A uniform temperature copper tube liquid cooling plate, including a plate body 1 and a liquid cooling flow channel arranged in the plate body 1, the plate body 1 includes a double-layer plate body 1, and the liquid cooling flow channel is arranged between the double-layer plate body 1 Between them, the liquid cooling channel includes a zigzag cold runner 2, and an opening is provided at the corner of the zigzag cold runner 2, and a liquid changing mechanism is connected to the opening, and the liquid changing mechanism includes a liquid suction pump 5, a liquid filling pump 6 and a connection Refrigerator 7 in between. The advantage of this technical solution is that the refrigerant in each independent branch pipe of the zigzag cold runner 2 can be replaced at the opening of the bend, and the cooling liquid in the independent branch pipe enters the Y-shaped branch pipe 3 through the opening, and the The liquid suction pump 5 draws in and sends it into the refrigerator 7. At the same time, the refrigerator 7 sends the cooling liquid that has cooled down to the other opening of the Y-shaped branch pipe 3 through the liquid feeding pump 6, and then sends it to the other opening of the zigzag cold runner 2. An independent branch pipe is used to cool down the next area, so as to ensure that the uniform temperature copper tube liquid cold plate will not have the problem of excessive local temperature and reduced cooling efficiency.

Specifically, the opening is connected with a Y-shaped branch pipe 3, and the two branch pipe ports of the Y-shaped branch pipe 3 are connected to the liquid suction pump 5 and the liquid filling pump 6 respectively, and the two branch pipe ports of the Y-shaped branch pipe 3 are provided with one-way stop valves. The suction pump 5 and the liquid filling pump 6 are divided into independent passages through the setting of the one-way stop valve 4 to avoid mixing of low-temperature coolant and high-temperature coolant; Sealing gasket for zigzag cold runner 2, Y-shaped branch pipe 3 and plate body 1.

Embodiment: a kind of processing method of uniform temperature type copper tube liquid cooling plate, comprises the following steps:

S1. Take the aluminum base material and cut it according to the predetermined specifications to prepare the plate, and set the appropriate zigzag cold runner 2 according to the required area of the plate body 1, and cut out the runner groove for installing the zigzag cold runner 2 on the plate, and Grinding and polishing the tank body;

S2. Set up a gasket groove with a thickness slightly thinner than the sealing gasket at the position corresponding to the sealing gasket in the tank body, and polish the inner wall of the gasket groove;

S3. Connect the sealing deposit to the opening of the zigzag cold runner 2, insert the Y-shaped branch pipe 3 into the sealing gasket, and embed the whole into the tank body, and the sealing gasket is aligned with the gasket groove;

S4. Cover the side of the plate body 1 with the groove body with a steel plate and pressurize to make the steel plate fit the plate body 1 completely;

S5, pour water into the Y-shaped branch pipe 3 and close the openings of all the Y-shaped branch pipes 3, and cool the overall device with liquid nitrogen until the water in the zigzag cold runner 2 and the Y-shaped branch pipe 3 freezes completely;

S6, heat up the overall device, open the opening of the Y-shaped branch pipe 3 to discharge the water;

S7, installing single stop valve 4 at the opening of Y-shaped branch pipe 3, two single-way stop valves 4 at the two openings of the same Y-shaped branch pipe 3 are reversely installed;

S8. Install a liquid filling pump 6 at the opening of the Y-shaped branch pipe 3 at the one-way stop valve that is opened inside, and install a liquid pump 5 at the opening of the Y-shaped branch pipe 3 at the one-way stop valve that is opened outward, and pump it A refrigerator 7 is connected between the liquid pump 5 and the liquid pump 6 .

Compared with the traditional liquid cold plate, the cooling efficiency of a kind of uniform temperature copper tube liquid cold plate produced by the technical scheme shown in the embodiment has been improved by 27.1%, and the temperature difference in each area has been reduced by 17.9%. cooling efficiency.

In the present invention, unless otherwise clearly specified and limited, a first feature may be "on" or "under" a second feature in that the first feature and the second feature are in direct contact, or the first feature and the second feature pass through the middle. Media indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In the description of this specification, reference to the description of the terms "one embodiment", "some embodiments", "example", "specific examples" or "some examples" means that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example.

Furthermore, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (5)

1. The utility model provides an samming formula copper pipe liquid cooling board, includes plate body and the liquid cooling runner of setting in the plate body, its characterized in that: the plate body includes the double-deck plate body, the liquid cooling runner sets up between the double-deck plate body, the liquid cooling runner includes the zigzag cold runner, the corner of zigzag cold runner is equipped with the opening, the opening part is connected with trades liquid mechanism, trade liquid mechanism and include drawing liquid pump, liquid feeding pump and connect the refrigerator between the two.

2. The uniform temperature copper tube liquid cold plate of claim 1, wherein: the opening part is connected with a Y-shaped branch pipe, and two branch pipe openings of the Y-shaped branch pipe are respectively communicated with the liquid pump and the liquid feeding pump.

3. The uniform temperature copper tube liquid cold plate of claim 2, wherein: two branch pipe openings of the Y-shaped branch pipe are provided with one-way stop valves.

4. The uniform temperature copper tube liquid cold plate of claim 2, wherein: and sealing gaskets which are attached to the zigzag cold runner, the Y-shaped branch pipe and the plate body are arranged outside the connecting part of the opening and the Y-shaped branch pipe.

5. The processing method of the uniform temperature type copper pipe liquid cold plate according to the claims 1 to 4, characterized in that: the method comprises the following steps:

s1, cutting an aluminum-based plate according to a preset specification to prepare the plate, arranging proper zigzag cold runners according to the area of a required plate body, cutting runner grooves for mounting the zigzag cold runners on the plate, and polishing the groove body;

s2, arranging a gasket groove with the thickness slightly thinner than that of the sealing gasket at a position corresponding to the sealing gasket in the groove body, and polishing the inner wall of the gasket groove;

s3, sleeving the sealing precipitate at an opening of the zigzag cold runner, inserting the Y-shaped branch pipe into a sealing gasket, and embedding the whole body into the groove body, wherein the sealing gasket is aligned to the gasket groove;

s4, covering one surface of the plate body, which is provided with the groove body, with a steel plate and pressurizing to enable the steel plate to be completely attached to the plate body;

s5, injecting water into the Y-shaped branch pipes, closing openings of all the Y-shaped branch pipes, cooling the whole device by liquid nitrogen until the water in the zigzag cold runner and the Y-shaped branch pipes is completely frozen;

s6, heating the whole device, and opening the opening of the Y-shaped branch pipe to discharge water;

s7, installing single stop valves at the openings of the Y-shaped branch pipes, and installing two single stop valves at two openings of the same Y-shaped branch pipe in opposite directions;

and S8, installing a liquid feeding pump at an opening of the Y-shaped branch pipe at the internally-opened one-way stop valve, installing a liquid pumping pump at an opening of the Y-shaped branch pipe at the externally-opened one-way stop valve, and connecting a refrigerating machine between the liquid pumping pump and the liquid feeding pump.

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