Heat exchange cold plate structure

Abstract

The invention relates to the technical field of heat exchange, in particular to a heat exchange cold plate structure which comprises a supporting piece, a flat tube plate body is arranged outside the supporting piece, a containing channel for containing the supporting piece is formed in the flat tube plate body, current collectors connected with the flat tube plate body are arranged at the two ends of the containing channel, and circulation cavities communicated with the containing channel are formed in the current collectors. The two current collectors are connected with a first connecting pipe and a second connecting pipe correspondingly, the first connecting pipe and the second connecting pipe communicate with circulating cavities in the two current collectors correspondingly, the supporting piece comprises a plurality of supporting parts connected at equal intervals, and each supporting part comprises an upper contact section, a middle supporting section, a lower contact section and a side supporting section which are sequentially connected; the side supporting sections and the middle supporting section are symmetrically arranged relative to the lower contact section, flowing channels are formed in the two sides of the middle supporting section, and the two ends of each flowing channel communicate with the two circulation cavities correspondingly. The heat exchange area is increased, and the structural rigidity is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange, in particular to a heat exchange cold plate structure. BACKGROUND

[0002] The cold plate (commonly known as liquid cooling plate) is the core component of the liquid cooling heat management system, and the heat source heat is efficiently transmitted to the cooling circuit through the circulation flow of the cooling liquid in the internal flow channel. It is commonly used in high heat flux density scenes, and has low thermal resistance and good temperature uniformity.

[0003] At present, in the systems of automobile air conditioner, battery heat management, industrial waste heat recovery, etc., flat tubes made by bending and welding of metal plates or extrusion of aluminum are widely used as core components of heat exchangers. The mainstream flat tube adopts a smooth flow channel design with an internal hollow cavity. However, this structure has some drawbacks. The effective heat exchange area is limited, which limits the further improvement of heat exchange efficiency. In addition, in order to withstand system pressure and prevent deformation, the number of ribs usually needs to be increased, but the increase of wall thickness will increase the thermal resistance.

[0004] For example, on June 27, 2012, a patent with publication number CN102519281A and the name of a supercooling plate heat exchanger was disclosed, which includes a heat exchange region with a hot flow side outlet and a hot flow side inlet at both ends. The hot flow side outlet and the hot flow side inlet of the heat exchange region include a main heat exchange zone, the main heat exchange zone includes at least two sections, each section is provided with a protruding rib and a concave rib which decreases its included angle size along the macro flow direction of the fluid in the heat exchange region, the included angle is the acute angle between the protruding rib and the macro flow direction. The present application sets the protruding rib and the concave rib, and the effective heat exchange area is limited, and the heat exchange fullness needs to be improved. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a heat exchange cold plate structure to solve the problem of heat exchange fullness.

[0006] To achieve the above objectives, the present invention provides a heat exchange cold plate structure, including a support member, a flat tube plate body disposed outside the support member, a receiving channel disposed inside the flat tube plate body to accommodate the support member, and a collector body connected to the flat tube plate body at both ends of the receiving channel, the collector body having a flow cavity communicating with the receiving channel, a first connecting pipe and a second connecting pipe respectively connected to the two collector bodies, the first connecting pipe and the second connecting pipe communicating with the flow cavities in the two collector bodies respectively, the support member including a plurality of equally spaced support portions, the support portion including an upper contact section, a middle support section, a lower contact section and a side support section connected in sequence, the upper contact section being connected to the lower contact section through the middle support section, the other side of the lower contact section being connected to a side support section, the side support section and the middle support section being symmetrically arranged about the lower contact section, and flow channels being disposed on both sides of the middle support section, the two ends of the flow channels communicating with the two flow cavities respectively.

[0007] Optionally, the support member is integrally formed.

[0008] Optionally, both sides of the middle support section and the side support section are provided with guide pits at equal intervals along the flow direction, and the depth of the middle part of the guide pit is lower than the depth of the edge of the guide pit.

[0009] Optionally, the middle support section is set vertically.

[0010] Optionally, the support member has a serrated shape.

[0011] Optionally, the middle support section is inclined.

[0012] Optionally, the support member has a wavy shape.

[0013] Optionally, the flat tube plate includes an upper plate and a lower plate located above and below the support member, respectively. One side of the upper plate and one side of the lower plate are formed in one piece, and the other side of the upper plate and the other side of the lower plate are bent and overlapped. The lower end face of the other side of the upper plate and the upper end face of the other side of the lower plate are overlapped and connected.

[0014] The beneficial effects of this invention are as follows: The heat exchange cold plate structure provided by this invention, when the heat exchange medium flows through the receiving channel inside the flat tube plate, the built-in support first increases the effective heat exchange area between the heat exchange medium and the support and the flat tube plate. Secondly, the two ends of the support can effectively break the laminar boundary layer of the fluid and promote turbulence, thereby significantly improving the convective heat transfer coefficient. At the same time, the support is firmly connected to the upper and lower inner walls of the receiving channel, forming a reinforced skeleton inside the receiving channel, enhancing the flat tube plate's ability to resist internal and external pressure differences, preventing the receiving channel from deforming under pressure, ensuring the reliability of long-term operation, and solving the problem of synergistically increasing the heat exchange area and improving the structural rigidity. Without significantly increasing the wall thickness and flow resistance, it simultaneously improves the heat exchange efficiency and structural rigidity of the flat tube. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the sawtooth-shaped support structure of the present invention; Figure 3 This is a schematic diagram of the sawtooth-shaped support structure of the present invention; Figure 4 This is a schematic diagram of the wave-shaped support structure of the present invention; Figure 5 This is a schematic diagram of the flat tube plate of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Upper plate; 2. Lower plate; 3. Current collector; 4. Support; 5. Flow channel; 6. First connecting pipe; 7. Second connecting pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figure 1 , Figure 5 and Figure 6 As shown, a heat exchange cold plate structure includes a support member 4, a flat tube plate body is provided outside the support member 4, and a receiving channel is provided inside the flat tube plate body to accommodate the support member 4. Both ends of the receiving channel are provided with collectors 3 connected to the flat tube plate body. Each collector 3 has a flow cavity communicating with the receiving channel. A first connecting pipe 6 and a second connecting pipe 7 are respectively connected to the two collectors 3. The first connecting pipe 6 and the second connecting pipe 7 are respectively connected to the flow cavities within the two collectors 3. The support member 4 includes multiple equally spaced support sections. Each support section includes an upper contact section, a middle support section, a lower contact section, and a side support section connected in sequence. The upper contact section is connected to the lower contact section through the middle support section. The other side of the lower contact section is connected to a side support section. The side support section and the middle support section are symmetrically arranged about the lower contact section. Flow channels 5 are provided on both sides of the middle support section, and both ends of the flow channels 5 are respectively connected to the two flow cavities.

[0021] The heat exchange medium is input through the first connecting pipe 6, flows through the flow channel 5 on the support member 4 in the receiving channel, and can then be discharged from the second connecting pipe 7. When the heat exchange medium flows through the receiving channel in the flat tube plate, the built-in support member 4 first increases the effective heat exchange area between the heat exchange medium and the support member 4 and the flat tube plate. Secondly, the two ends of the support member 4 can effectively break the laminar boundary layer of the fluid and promote turbulence, thereby significantly improving the convective heat transfer coefficient. At the same time, the support member 4 is firmly connected to the upper and lower inner walls of the receiving channel, forming a reinforced skeleton inside the receiving channel, enhancing the flat tube plate's ability to resist internal and external pressure differences, preventing the receiving channel from deforming under pressure, and ensuring the reliability of long-term operation.

[0022] The upper contact section on the upper side and the lower contact section on the lower side of the support member 4 are firmly connected to the top and bottom of the receiving channel. In this way, the support member 4 forms an extended heat exchange surface inside the receiving channel, disturbing the fluid to enhance heat transfer and improve the overall heat transfer coefficient. The receiving channel is supported by the middle support section and the side support section, which facilitates the increase of heat exchange area, enhances heat transfer, and improves the structural rigidity of the heat exchange cold plate structure itself, thus solving the problem of synergistic effect between increasing heat exchange area and improving structural rigidity. In addition, as an internal support skeleton, the support member 4 greatly enhances the deformation resistance of the flat tube plate and allows for the use of thinner wall thickness, thereby reducing weight and cost while ensuring pressure-bearing reliability.

[0023] The support member 4 is a thin metal sheet, which is integrally formed to improve the overall rigidity, impact resistance, vibration resistance and durability, and reduce loosening during long-term use.

[0024] The upper end of the upper contact section is connected to the top surface of the receiving channel inside the flat tube plate, and the lower end of the lower contact section is connected to the bottom surface of the receiving channel inside the flat tube plate. The upper contact section of one support part is connected to the side support section of the adjacent support part to realize the connection of two support parts. The middle support section and the side support section in the support member 4 facilitate the support of the receiving channel. Both sides of the middle support section and the side support section are provided with guide pits at equal intervals along the flow direction. The depth of the middle part of the guide pit is lower than the depth of the edge of the guide pit, which facilitates the flow of heat exchange medium through the guide pit. Under the action of the guide pit, the heat exchange medium is guided to flow and impact the top and bottom of the receiving channel, which helps to improve the heat exchange efficiency.

[0025] The middle support section is vertically arranged; specifically, the shape of the support member 4 can be sawtooth-shaped, such as... Figure 2 and Figure 3 As shown.

[0026] The middle support section is inclined; specifically, the shape of the support member 4 can also be wavy, such as... Figure 4 As shown.

[0027] like Figure 5 and Figure 6As shown, the flat tube plate includes an upper plate 1 and a lower plate 2 located above and below the support member 4, respectively. One side of the upper plate 1 and one side of the lower plate 2 are formed in one piece. The other side of the upper plate 1 and the other side of the lower plate 2 are bent and overlapped. The lower end face of the other side of the upper plate 1 and the upper end face of the other side of the lower plate 2 are overlapped and connected. The overlap of the upper plate 1 and the lower plate 2 extends away from the receiving channel, and the extension length is preferably 10mm. The overlap part is welded by a local fusion welding process to form a sealed receiving channel for cooling. The internal height of the receiving channel is in the range of 1-10mm, preferably 3-5mm. Specifically, it can be as follows: Figure 6 As shown.

[0028] The overlapping joints of the flat tube plate are continuously welded using a local fusion welding process (preferably a tunnel brazing furnace, laser welding, or resistance rolling welding) to form a sealed tube. The heat generated during the welding process allows the support 4 to achieve a stronger bond with the inner wall of the receiving channel through a micro-brazing effect.

[0029] The flat tube plate is made of metal sheet, such as AL3003, and is formed by bending. It is preferably made of aluminum plate, copper plate, etc.

[0030] The two current collectors 3 are connected to both ends of the flat tube plate by circumferential welding or brazing. Example

[0031] The flat tube body can be made of AL3003 metal sheet with a thickness of 0.8mm; Support 4 can be made of AL3003 metal sheet with a thickness of 0.15mm. Support 4 adopts a sawtooth structure with a tooth height of 1.5mm and a tooth pitch of 3mm. It is pre-fixed to the lower plate 2 of the flat tube plate by micro-spot welding. The height of the receiving channel in the flat tube plate is in the range of 1-10mm, preferably 4mm; Then, the overlapping joints of the flat tube plate and the connection between the end of the flat tube plate and the current collector 3 are sealed and welded: a 2000W fiber laser is used, and the welding speed is 60mm / s.

[0032] Under the same pump power conditions, compared with a flat tube with a smooth flow channel of the same size, it improves the heat exchange capacity and also enhances the resistance to collapse pressure.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0034] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A heat exchange cold plate structure, characterized in that, The device includes a support member, an outer flat tube plate, and a receiving channel for accommodating the support member. Both ends of the receiving channel are provided with collectors connected to the flat tube plate. Each collector has a flow cavity communicating with the receiving channel. A first connecting pipe and a second connecting pipe are respectively connected to the two collectors, and the first and second connecting pipes communicate with the flow cavities within the two collectors. The support member includes multiple equally spaced support sections, each including an upper contact section, a middle support section, a lower contact section, and a side support section connected sequentially. The upper contact section is connected to the lower contact section via the middle support section. A side support section is connected to the other side of the lower contact section. The side support section and the middle support section are symmetrically arranged about the lower contact section. Flow channels are provided on both sides of the middle support section, and both ends of the flow channels communicate with the two flow cavities.

2. The heat exchange cold plate structure according to claim 1, characterized in that, The support component is integrally formed.

3. The heat exchange cold plate structure according to claim 1, characterized in that, Both sides of the middle support section and the side support section are provided with guide pits at equal intervals along the flow direction, and the depth of the middle part of the guide pit is lower than the depth of the edge of the guide pit.

4. The heat exchange cold plate structure according to claim 1, characterized in that, The middle support section is set vertically.

5. The heat exchange cold plate structure according to claim 4, characterized in that, The support member has a sawtooth shape.

6. The heat exchange cold plate structure according to claim 1, characterized in that, The middle support section is inclined.

7. A heat exchange cold plate structure according to claim 6, characterized in that, The support member has a wavy shape.

8. The heat exchange cold plate structure according to claim 1, characterized in that, The flat tube plate includes an upper plate and a lower plate located above and below the support member, respectively. One side of the upper plate and one side of the lower plate are formed in one piece. The other side of the upper plate and the other side of the lower plate are bent and overlapped. The lower end face of the other side of the upper plate and the upper end face of the other side of the lower plate are overlapped and connected.

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