TWI571610B - Cooling plate and manufacturing method thereof - Google Patents

Description

Cooling plate and method of manufacturing same

The present invention relates to a cooling plate and a method of manufacturing the same, and more particularly to a cooling plate using a cover body joined to both sides of a plate body in series with a plurality of inner flow passages to form a continuous flow path space, and a method of manufacturing the same.

The cooling plate (or the heating plate) is mainly applied to heat-dissipate/heat the plate body in a convection manner after the inner channel of the plate body is disposed and the liquid is injected. Referring to FIG. 1A and FIG. 1B, the structure and manufacturing method of a conventional cooling plate (or heating plate) are disclosed. Most of the drawings are formed by machining a groove 11 pattern on a metal base plate 10. Thereafter, a corresponding metal top plate 12 is attached to the top surface of the metal base plate 10, and a friction stir welding method is applied to the paths corresponding to the sides of the channel 11 or a conventional welding method and a dense screw are applied. Or the screw is fixed to the metal bottom plate 10 and the metal top plate 12, and if necessary, when the screwing and fixing method is adopted, the groove of the channel 11 may be sealed with an O-ring.

In the foregoing conventional method, there are quite a few disadvantages. First, the processing of the groove on the metal base plate is time consuming and generates a large amount of waste; further, when the metal base plate and the metal top plate are joined, the welded bead is welded. It must be applied along the channel, so it has a very dense and large number of weld beads, and its welding deformation is large, which is difficult to maintain the flatness of the workpiece. In addition, if it is screwed and fixed, the spacing of the screws must be It is small and needs to be sealed with an O-ring to seal the channel, thus making the cooling plate partial to the element and affecting the heat transfer effect.

Moreover, in the conventional metal working process, the channel includes the rewinding portion, which is disadvantageous for splicing or cutting to form a plurality of channels, and the customized and modular processes cannot be achieved.

It is an object of the present invention to provide a structural technique for rapidly forming a flow passage in a cooling plate. Another object of the present invention is to provide a technique for integrally forming a cooling plate having an inner flow path.

In order to achieve the foregoing object, the technical means of the cooling plate of the present invention comprises a plate body and a two cover body. The plate body has a side surface and a plurality of inner flow passages penetrating the two side surfaces, and the inner end of each inner flow passage has an opening formed on the two sides respectively; the cover body respectively engages the two sides of the plate body, and the two cover bodies are respectively provided There is at least one flow guiding portion, and the guiding portion is surrounded by the adjacent two inner flow passages to form a freewheeling region; the plurality of inner flow passages of the plate body are connected in series through the freewheeling region to form a continuous flow channel space. .

In one embodiment, the panel system is formed from an extruded material, and the inner flow channels are sneaked into the panel body independently of each other without being in communication.

In an embodiment, the flow guiding portion of the two cover body is disposed on the groove-shaped guiding flow path formed on the surface facing the two side surfaces respectively, and the groove-shaped guiding flow channel is simultaneously desired Two of the two adjacent inner flow passages that are adjacent to each other are open to the same side.

In one embodiment, when engaging any of the cover body and the plate body, a partition plate is inserted into the joint surface of the cover body and the plate body between two adjacent freewheeling regions.

In one embodiment, at least one boss is formed on either side, the extent of the boss covering two ipsilateral openings of two adjacent inner flow channels to be turned on, and the cover corresponding to the side The surface is provided with a groove corresponding to the range of the boss, and at least one of the flow guiding portion is disposed in the groove, the guiding portion is a groove-shaped guiding flow channel, and the groove type The opening range of the guiding flow channel corresponds to two ipsilateral openings of the two adjacent inner flow channels to be turned on, and is grouped with each other When the cover body and the side surface are connected, the boss formed on the side surface abuts against the groove of the cover body, and the groove-shaped guiding flow channel is simultaneously connected to the two inner flow paths adjacent to the conductive body. The two sides of the same opening are connected.

In one embodiment, at least one groove of the same side opening covering two adjacent inner flow paths to be turned on is formed on the side surface, and the cover body is provided with a boss corresponding to the groove range. And at least one groove-shaped guiding flow channel is provided on the boss, and the opening range of the groove-shaped guiding channel corresponds to two of the two adjacent inner channels to be turned on. a side opening, and when the cover body and the side surface are assembled to each other, the boss is abutted against the groove on the side surface, and the groove-shaped guiding flow channel is simultaneously adjacent to two adjacent to be conductive The two side openings of the inner flow channel are connected.

In order to achieve the foregoing object, another technical means of the cooling plate of the present invention comprises a plate body and two cover bodies, the plate body having two sides facing away from each other, and the plate body is provided with a plurality of inner flow passages penetrating the two side surfaces Each of the inner end of the inner flow passage has an opening formed on each of the two sides, and a flow guiding portion is disposed between each adjacent inner flow passage of the inner flow passage; The two sides of the plate body are combined with the adjacent two inner flow channels to form a freewheeling zone; wherein the inner flow channels of the plate body are connected in series through the freewheeling zone A continuous flow channel space.

In one embodiment, the flow guiding portion is formed by a partition wall between two adjacent pairs of the inner flow passages on the opposite side of the pair of adjacent sides, and a recessed surface with respect to the side surface. The freewheeling zone is formed by the two sides of the same side, the space between the flow guiding portion and the cover body joined to the side surface.

In one embodiment, when engaging any of the cover body and the plate body, a partition plate is inserted into the adjacent joint surface of the cover body and the plate body between the two adjacent ones.

In one embodiment, the flow guiding portion is formed by a partition wall between the adjacent side openings of each pair of adjacent ones of the pair of sides forming a retracting surface with respect to the side surface, and a surface of the cover portion of the flow guiding portion is provided with a boss corresponding to the flow guiding portion and the two opening regions communicating with the flow guiding portion, after the cover body and the side surface are assembled with each other The same side two The opening, the space between the flow guiding portion and the boss are collectively encircled into the freewheeling zone.

In order to achieve the above-mentioned purpose of integrally forming a cooling plate having an inner flow passage, the technical means of the present invention comprises the steps of extruding one of the aforementioned plates with an aluminum extruded metal member, and respectively joining the two sides of the plate body. The cover structure is configured to serially connect the inner flow passages to form a continuous flow passage space.

The invention has at least the following features: in the invention, the sheet material and the inner flow passage thereof are integrally formed (for example, an extrusion process), and the material waste caused by the processing can be reduced, and the deformation amount is small. The invention manufactures the plate and the inner flow passage thereof integrally by the extrusion process, and has the advantages of rapid process, and can avoid the complicated process of welding or screwing on the assembly. The invention applies the extrusion process on the cooling plate, can effectively improve the manufacturing efficiency and solve the processing difficulty of the large-area cooling plate and the heat dissipation efficiency problem.

10‧‧‧Metal backplane

11‧‧‧ channel

12‧‧‧Metal top plate

20, 20a, 20b, 20c, 20d, 20e‧‧‧ plate

21, 21’, 21a, 21b, 21c, 21d, 21e‧‧‧ side

211,211’‧‧‧Retraction

212‧‧‧ Groove

22‧‧‧Inner runner

221,221’‧‧‧ openings

23,23’‧‧‧ plate body slot

24‧‧‧Boss

30, 30a, 30b, 30c, 30d, 30e‧ ‧ cover

31‧‧‧ surface

32,32'‧‧‧ cover groove

33,33’‧‧‧ boss

34‧‧‧ Groove

40, 40a, 40b, 40c, 40d, 40e‧ ‧ diversion

50, 50’ ‧ ‧ partition

60, 60a, 60b, 60c, 60d, 60e‧‧‧ free zone

W‧‧‧Flow

Step procedure for S10~S20‧‧‧ invention

1A is a structure of a prior art cooling plate; FIG. 1B is a combined flow path forming structure of a prior art cooling plate; FIG. 2 is a perspective assembled view of an embodiment of the present invention; 4A is a perspective assembled view of a cover body provided with a flow guiding portion according to an embodiment of the present invention; FIG. 4B is a plan view of FIG. 4A; FIG. 5A is a plan view showing a groove and a flow guiding portion of the cover body according to an embodiment of the present invention; FIG. 5B is a perspective view of a plane assembly of the cover body; FIG. 6A is a perspective view of a cover assembly of the cover body, a guide portion, and a groove for providing a plate body according to an embodiment of the present invention; 6A is a combined view of the plane of FIG. 6A; FIG. 7A is a perspective assembled view of a plate body guide portion according to an embodiment of the present invention; FIG. 7B is a plan view of FIG. 7A; FIG. FIG. 8B is a combined view of the plane of FIG. 8A; FIG. 9 is a flow chart of the method for manufacturing the cooling plate of the present invention.

The embodiment of the present invention will be described with reference to the drawings.

Referring first to FIGS. 2 and 3, an embodiment in which the flow guiding portion is provided in the lid body 30 is provided. The structure of the cooling plate in this embodiment mainly includes the plate body 20 and the cover body 30. The plate body 20 has two sides (21, 21') back to back, and the plate body 20 further includes a plurality of inner flow passages 22 extending through the two side faces (21, 21') (the inner flow passages 22 are preferably in the present stage). They are independent of each other and are sneaked in the plate body 20, and the ends of each inner flow channel 22 are located on the two side faces (21, 21'), and respectively form openings (221, 221'). ). It is worth mentioning that, in comparison with the two-piece assembled structure, the plate body 20 and the inner flow passages 22 of the embodiment can be integrally formed (for example, the extrusion technology is used to process aluminum extruded materials). to make.

In this embodiment, the two cover bodies 30 are respectively joined to the two side faces (21, 21') of the plate body 20, and the two cover bodies 30 are respectively provided with at least one flow guiding portion 40, and the flow guiding portion 40 is Coexisting with the adjacent two inner flow passages 22 forms a freewheeling zone 60. The plurality of inner flow passages 22 of the plate body 20 are connected in series through the freewheeling regions 60 to form a continuous flow passage space. The flow guiding portion 40 of the two cover bodies 30 corresponding to the two side faces (21, 21') is provided on the groove-shaped diversion formed on the surface 31 facing the two side faces (21, 21'), respectively. In the portion 40, the flow guiding portion 40 is simultaneously connected to the two openings 221 on the same side of the two inner flow passages 22 adjacent to each other. Therefore, when the coolant is pressurized and pressurized in the continuous inner flow passage 22 of the present invention, the coolant can flow through all the inner flow passages 22 in a head-to-tail manner (refer to the cold in FIG. 3). However, the flow of liquid is indicated by W). Of course, in practice, the first end of the inner flow passages 22 will have an external interface for introducing and deriving the coolant in the inner flow passage 22, which is familiar to those skilled in the art. Therefore, no longer rumors.

Continuing to refer to another embodiment of the present invention shown in FIGS. 4A and 4B. In this embodiment, the cover body 30a is provided with a flow guiding portion 40a disposed on the side surface 21a of the plate body 20a, and is disposed on the surface 31 of the groove-shaped guiding flow path, and the guiding portion 40a is simultaneously desired. The two adjacent inner openings 22 of the two adjacent inner flow passages 22 are connected to each other. In the extended embodiment of the embodiment, when any of the cover bodies 30a and the plate body 20a are joined, the cover body 30 and the plate are inserted between the two adjacent freewheeling regions 60a by a partition plate 50. The body is a joint surface of 20a, and the specific method may be that a cover groove 32 is provided on the surface 21a between the two adjacent flow guiding portions 40a of the cover 30a, and corresponds to the cover body. A plate body groove 23 is disposed at a position of the side surface 21a of the plate body 20a of the groove 32. When the cover body 30a and the plate body 20a are joined, the partition plate 50 is inserted into the cover body groove 32 and the plate body groove. 23. This structure forms a stop structure between the two freewheeling zones 60a after engaging the cover 30a with the plate 20a to prevent overflow of fluid (not shown) in the freewheeling zone 60a.

Referring to still another embodiment of the present invention shown in FIGS. 5A and 5B. In this embodiment, at least one boss 24 is formed on either side 21b of the plate body 20b, and the range of the boss 24 covers two openings 221 of the same side of the two adjacent inner flow channels 22 to be turned on. In addition, the surface 31 of the cover 30b corresponding to the side surface 21b is provided with a groove 34 corresponding to the range of the boss 24, and the groove 34 is provided with at least one of the flow guiding portion 40b. The flow portion 40b is a groove-shaped guide flow channel, and the opening range of the flow guiding portion 40b corresponds to two openings 221 of the same side of the two adjacent inner flow channels 22 to be turned on, and When the cover body 30b and the plate body 20b are assembled to each other, the boss 24 formed on the side surface 21b abuts against the groove 34 of the cover body 30b to form a stagnation structure, and the flow guiding portion 40b is simultaneously The two adjacent inner openings 22 of the two inner flow passages 22 to be turned on are connected to each other, and the flow guiding portion 40b is simultaneously connected to the two same side openings 221 of the two inner flow passages 22 adjacent to each other. through, And encircling the two inner passages 22 into a freewheeling zone 60b.

Continuing to refer to still another embodiment of the present invention shown in FIGS. 6A and 6B. At least one groove 212 is formed on any one of the side faces 21c of the plate body 20c of the embodiment, and the range of the groove 212 covers two openings 221 of the same side of the two adjacent inner flow channels 22 to be turned on. The cover 30c is provided with a boss 33 corresponding to the range of the groove 212, and the boss 33 is provided with at least one guiding portion 40c, and the guiding portion 40c is a groove-shaped guiding channel The opening range of the flow guiding portion 40c corresponds to the two same side openings 221 of the two adjacent inner flow channels 22 to be turned on, and when the cover body 30c and the plate body 20c are assembled to each other, The boss 33 abuts against the groove 212 of the side surface 21c to form a stop structure, and the flow guiding portion 40c is simultaneously connected to the two same side openings 221 of the two inner flow passages 22 adjacent to each other. And, together with the two inner flow passages 22, encircle the freewheeling zone 60c.

The present invention further provides an embodiment in which the flow guiding portions (40d, 40e) are disposed in the plate body (20d, 20e). As shown in Figs. 7A, 7B, 8A and 8B, the cooling plate of the embodiment, The plate body (20d, 20e) and the cover body (30d, 30e) are provided, and the plate body (20d, 20e) has back sides (21d, 21e), and the plate body (20d, 20e) is provided through the two sides a plurality of inner flow passages 22 of (21d, 21e), each of which has an opening 221 formed on the two side surfaces (21d, 21e), and each of the inner flow passages 22 A flow guiding portion (40d, 40e) is disposed between the adjacent two inner flow passages 22; the cover bodies (30d, 30e) respectively engage the two side surfaces (21d, 21e) of the plate body (20d, 20e) to match the The flow guiding portion (40d, 40e) is surrounded by the adjacent two inner flow passages 22 to form a freewheeling region (60d, 60e); wherein the plurality of inner flow passages 22 of the plate body (20d, 20e) pass through The freewheeling zones (60d, 60e) are connected in series to form a continuous flow channel space. Further, the above-mentioned plate bodies (20d, 20e) are made of extruded materials, and the inner flow channels 22 are sneaked in the plate bodies (20d, 20e) and are independent of each other.

Please refer to an embodiment of the present invention shown in FIGS. 7A and 7B. The flow guiding portion 40d of the present embodiment is formed by a partition wall between the two adjacent pairs of inner channels 22 of the pair of opposite sides of the pair of side surfaces 21d of the plate body 20d. The retraction surface 211 of the side surface 21d is The space enclosed by the two adjacent inner flow passages 22 forms the freewheeling region 60d in the space between the same two openings 221, the flow guiding portion 40d and the cover 30d joined to the side surface 21d. Further, when engaging any of the cover body 30d and the plate body 20d, a partition plate 50' is inserted into the joint surface of the cover body 30d and the plate body 20d between the two adjacent freewheeling regions 40d. The specific method may be that a cover groove 32 ′ is disposed on the surface 21 d between the two adjacent flow guiding portions 40 d of the cover 30 d, and the plate body corresponding to the cover groove 32 ′ A plate body groove 23' is disposed at a position of the side surface 21d of the 20d, and when the cover body 30d and the plate body 20d are joined, the partition plate 50' is inserted into the cover groove 32' and the plate body groove 23'. This structure may form a stop structure between the two freewheeling zones 60d after engaging the cover body 30d with the plate body 20d to prevent fluid overflow in the freewheeling zone 60d.

Continuing to refer to an embodiment of the present invention shown in FIGS. 8A and 8B. The flow guiding portion 40e of the embodiment is such that the partition wall between the adjacent side openings 221 of each pair of adjacent pairs of the opposite side faces 21e forms a retracting surface with respect to the side surface 21e. 211 ′, and a surface 33 of the cover 30 e of the flow guiding portion 40 e is provided with a boss 33 ′ corresponding to the two openings communicating with the guiding portion 40 e and the guiding portion 40 e After the cover body 30e and the side surface 21e are assembled to each other, the boss 33' can be embedded in the opening space of the flow guiding portion 40e to form a stop structure, the same side two opening 221, the diversion The space between the portion 40e and the boss 33' is enclosed by the freewheeling region 60e.

Continuing to refer to an embodiment of the method for manufacturing a cooling plate of the present invention shown in FIG. The method of the present invention comprises the steps of: step S10, extruding a plate body 20 having an integrally formed inner flow passage 23 as in the foregoing embodiment with an aluminum extruded metal member; and step S20, respectively engaging the two sides of the plate body 20 The cover body 30 of the foregoing embodiment is used to connect the inner flow channels 22 in series to form a continuous flow channel space.

In the above invention, the joint cover 30 is applied with friction stir on both sides of the plate body 20. Friction Stir Welding (FSW) technology, Cold Metal Transfer (CMT) technology or low heat input welding (eg, laser welding) technology.

As described above, the present invention is integrally formed by the extrusion technique of the plate body and the inner flow channel thereof, and the inner flow passages are independent of each other. Therefore, the present invention can be combined and divided according to the size of the use area, for example, By adopting the two-two-splicing plate body, it is easy to lengthen the length of the inner flow passage (the parallel direction of the inner flow passage) or the length of the longitudinal direction (the axial direction of the inner flow passage) to achieve the double-flow and continuous joint distribution of the inner flow passage arrangement.

In summary, the present invention has at least the following advantages: the present invention can reduce the material waste caused by the processing and the amount of deformation is small by integrally forming the plate and the inner flow passage thereof by the extrusion process. The invention manufactures the plate and the inner flow passage thereof integrally by the extrusion process, and has the advantages of rapid process, and can avoid the complicated process of welding or screwing on the assembly. The invention applies the extrusion process on the cooling plate, can effectively improve the manufacturing efficiency and solve the processing difficulty of the large-area cooling plate and the heat dissipation efficiency problem.

The embodiments or examples of the technical means adopted by the present invention are not intended to limit the scope of implementation of the present patent. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

20‧‧‧ board

21,21’‧‧‧ side

22‧‧‧Inner runner

221,221’‧‧‧ openings

30‧‧‧ cover

40‧‧‧Drainage Department

60‧‧‧Continuous area

W‧‧‧Flow

Claims (5)

A cooling plate comprising: a plate body having two sides facing away from each other, wherein the plate body is provided with a plurality of inner flow passages penetrating the two side faces, and the inner ends of each inner flow channel are respectively disposed on the two sides Forming an opening, and a flow guiding portion is disposed between each adjacent two inner flow passages of the inner flow passages; and two cover bodies respectively engaging the two side surfaces of the plate body to cooperate with the flow guiding portion and the phase The adjacent two inner flow channels are collectively encircled into a freewheeling zone; wherein a plurality of inner flow channels of the plate body are connected in series through the freewheeling zone to form a continuous flow channel space. The cooling plate of claim 1, wherein the plate system is made of an extruded material, and the inner flow channels are sneaked in the plate body and are independent of each other. The cooling plate according to claim 1, wherein the flow guiding portion is a partition wall between two adjacent pairs of the inner side of each pair of the inner flow passages of the pair of adjacent sides of the plate body Forming a retracted surface opposite to the side surface and a space surrounded by the two adjacent inner flow passages, the space on the same side, the space between the flow guiding portion and the cover body joined to the side surface forms the freewheeling Area. The cooling plate of claim 3, wherein the cover and the plate are inserted between two adjacent freewheeling zones by a partition when joining any of the cover and the plate. The joint surface of the body. The cooling plate according to claim 1, wherein the flow guiding portion is formed by a partition wall between the adjacent side openings of each pair of adjacent inner flow passages of the pair of adjacent sides. Providing a protrusion on the side surface of the guide portion, and providing a boss on the surface of the cover portion of the flow guiding portion, the boss portion corresponding to the flow guiding portion and the region of the two openings communicating with the flow guiding portion After the cover body and the side surface are assembled, the space on the same side and the space between the flow guiding portion and the boss are circled together to form the freewheeling area.