Liquid cooling device

Abstract

A liquid cooling device comprising: a base seat (10) with an inlet channel (11), an outlet channel (12), a cavity (13), an outlet chamber (14), and a connecting hole (15), wherein the inlet channel (11) is connected to the cavity (13) and the outlet channel (12) is connected to the outlet chamber (14); a deflection cover (20) arranged in the base seat (10) comprising a concave recess (21), multiple through-slots (22), and a return groove group (23), wherein the concave recess (21) is concave on one side of the deflection cover (20) facing the cavity (13) to form an inlet chamber (16) with the cavity (13), wherein the return groove group (23) is arranged corresponding to a location of the connecting hole (15) and between each of the through-slots (22) is ordered;and a base seat (30) with a base plate (31) and several lamellae (32), wherein the base seat (10) is arranged on the base seat (30), each of the lamellae (32) is arranged on the base plate (31) and is positioned against the deflection cover (20), several flow channels (33) are formed between each pair of lamellae (32), two ends of each of the lamellae (32) each form a bypass chamber (34) with the base seat (10), the deflection cover (20) and the base plate (31), the inlet chamber (16) is connected to each of the bypass chambers (34) through each of the through-slots (22), each of the bypass chambers (34) is connected to the backflow groove group (23) through each of the flow channels (33), the backflow groove group (23) is connected to the outlet chamber (14) through the connecting hole (15) stands.;

Description

BACKGROUND Technical field The present disclosure relates to the field of heat dissipation, in particular to a liquid cooling device. Description of the state of the art As electronic technology evolves toward thinner and more powerful components, the amount of heat generated by electronic devices or equipment during operation has increased significantly. Conventional air cooling is no longer sufficient to dissipate this heat. Consequently, many manufacturers are turning to liquid cooling systems to ensure that electronic devices or equipment remain within their operating temperature range. In a liquid cooling system, a coolant is tightly enclosed in a closed loop. The coolant acts as a medium to transfer heat energy from the heat source, and multiple cooling fins are arranged according to the heat source to achieve rapid heat exchange. To effectively increase the heat exchange surface exposed to the coolant and thus improve the coolant's heat transfer efficiency, the spacing between the cooling fins is minimized to increase their number. This significantly increases the flow resistance between the fins. Consequently, after entering the liquid cooling system, the majority of the coolant flows directly from the inlet channel towards the nearest cooling fins. This leaves fins further away from the inlet channel with less coolant flowing through them, causing the liquid cooling system to fail to operate at its full cooling capacity.To accommodate thinner designs, the internal capacity to hold the coolant can also be reduced if the overall volume of the liquid cooling device shrinks, so that the flow resistance between the cooling fins would directly affect the flow rate and the flow of the coolant passing through the cooling fins, thus affecting the heat dissipation efficiency of the liquid cooling device. In light of the above, the inventor endeavors to eliminate the aforementioned disadvantages associated with current technology and aims to provide an effective solution through extensive research along with the use of academic principles and academic knowledge. SUMMARY The main objective of the present disclosure is to cause the coolant to flow uniformly into the bypass spaces and flow channels in order to improve the coolant flow and heat exchange efficiency. To achieve the aforementioned objective, the present disclosure provides a liquid cooling device comprising a base seat, a deflector cover, and a bottom seat. The base seat has an inlet channel, an outlet channel, a cavity, an outlet chamber, and a connecting hole. The inlet channel communicates with the cavity. The outlet channel communicates with the outlet chamber. The deflector cover is arranged in the base seat and has a concave recess, several through-slots, and a reflux groove assembly. The concave recess is concave on one side of the deflector cover facing the cavity to form an inlet chamber with the cavity. The reflux groove assembly is arranged corresponding to a location of the connecting hole and is positioned between each of the through-slots. The bottom seat comprises a base plate and several fins. The base seat is arranged on the bottom seat.Each of the lamellae is positioned on the base plate and aligned with the deflector cover. Several flow channels are formed between each pair of lamellae. Two ends of each lamella form a bypass chamber with the base seat, the deflector cover, and the base plate. The inlet chamber is connected to each of the bypass chambers through each of the through-slots. Each of the bypass chambers is connected to the return groove assembly through each of the flow channels. The return groove assembly is connected to the outlet chamber through the connecting hole. Another aspect of the present disclosure includes that each of the through-slots has a penetration area that penetrates the deflection cover, the penetration area of ​​the through-slot adjacent to the inlet channel is smaller than the penetration area of ​​any of the other through-slots, and the penetration area of ​​the through-slot located at a diagonal corner of the inlet channel is larger than the penetration area of ​​any of the other through-slots. Another aspect of the present disclosure includes the fact that each of the through-slots is trapezoidal, and each of the through-slots is arranged at four corners of the deflection cover. Another aspect of the present disclosure includes that each of the through-slots has a penetration area that penetrates the deflection cover, the penetration area of ​​the through-slot adjacent to the inlet channel is less than or equal to the penetration area of ​​any of the other through-slots, and the penetration area of ​​the through-slot located at a diagonal corner of the inlet channel is greater than or equal to the penetration area of ​​any of the other through-slots. Another aspect of the present disclosure includes that each of the through-slots is circular, each of the through-slots surrounds the return groove group, such that it is configured adjacent to an edge of the deflection cover. Another aspect of the present disclosure includes the fact that each of the through-slots is strip-shaped, and each of the through-slots is arranged parallel to two opposite sides of the return groove group. Another aspect of the present disclosure includes that the return groove group comprises a confluence groove and a buffer groove, the confluence groove being formed on one side of the deflection cover facing each of the lamellae, the buffer groove being formed on one side of the deflection cover facing the cavity, and each of the flow channels being sequentially connected to the outlet chamber through the confluence groove, the buffer groove and the connecting hole. Another aspect of the present disclosure includes the fact that the confluence groove is strip-shaped and perpendicular to each of the lamellae, and the buffer groove is circular and arranged according to a location of the connecting hole. Another aspect of the present disclosure includes that the confluence groove comprises a wide section and a pair of narrow sections that are narrower than the wide section, the wide section corresponding to the buffer groove and connected between each of the narrow sections. Another aspect of the present disclosure includes that it further comprises a fixture element, the fixture element being arranged between each of the slats and the deflection cover. In the liquid cooling device of the present disclosure, the cavity and the concave recess are each formed at the base seat and at the deflection cover which is arranged in the base seat, and the cavity and the concave recess together form the inlet chamber as a buffer, so that the coolant can flow together in the inlet chamber after entering the inlet channel, the coolant then flows uniformly into the bypass chambers and the flow channels to improve the flow and the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view of the first embodiment of the present disclosure in an extended arrangement; Fig. 2 is another view of the first embodiment of the present disclosure in an extended arrangement; Fig. 3 is a view of the base seat and the pump of the first embodiment of the present disclosure in an extended arrangement; Fig. 4 is yet another view of the first embodiment of the present disclosure in an extended arrangement; Fig. 5 is a cross-sectional side view of the first embodiment of the disclosure; Fig. 6 is another cross-sectional side view of the first embodiment of the disclosure; Fig. 7 is a cross-sectional top view of the first embodiment of the present disclosure; Fig. 8 is a cross-sectional view along AA of Fig. 6; Fig. 9 is a cross-sectional view along BB of Fig. 6; Fig. 10 is a cross-sectional side view of the second embodiment of the disclosure; Fig.Figure 11 is another cross-sectional side view of the second embodiment of the present disclosure; Figure 12 is a top view of the deflection cover of the first embodiment of the present disclosure; Figure 13 is a top view of the deflection cover of the third embodiment of the present disclosure; Figure 14 is a top view of the deflection cover of the fourth embodiment of the present disclosure; and Figure 15 is a top view of the deflection cover of the fifth embodiment of the present disclosure. DETAILED DESCRIPTION It should be self-evident that the terms used to indicate positions and spatial relationships, for example "front", "rear", "left", "right", "front end", "rear end", "distal end", "longitudinal direction", "transverse direction", "vertical direction", "top" and "bottom", are based on the positions and spatial relationships disclosed in the drawings and are used only to disclose the present disclosure and are not used to indicate or imply the specified location of the device or components or the specified structure and operation at a particular location; consequently, the present disclosure is not intended to be limiting. The terms "first," "second," "third," "fourth," and "fifth," for example, are used to describe each unit, component, region, layer, and / or part. The component, unit, region, layer, and / or part are not limited by these terms. These terms are used only to separate the element, arrangement, region, layer, or part. Unless clearly stated in accordance with the overall patent description, the terms, for example, "the first," "the second," "the third," "the fourth," and "the fifth," are not used to imply order or sequence. As used herein and not otherwise defined, the terms "essentially" and "approximately" are used to describe small variations. When used in conjunction with an event or situation, the terms can encompass the precise moment the event or situation occurs, as well as the event or situation occurring in close approximation. When combined with a numerical value, the terms can, for example, encompass a range of variation equal to or less than ±5% of the numerical value, such as equal to or less than ±4%, equal to or less than ±3%, equal to or less than ±2%, equal to or less than ±1%, equal to or less than ±0.5%, equal to or less than ±0.1%, or equal to or less than ±0.05%. The technical content of this disclosure, along with the detailed description of embodiments and the accompanying drawings, is as follows. However, it should be noted that the accompanying drawings serve only for explanatory purposes and should not be used to limit the scope of protection of this disclosure. The present disclosure provides a liquid cooling device through which a coolant flows to cool a heat source (not shown in the figures). Figures 1, 2, 3, and 4 show the first embodiment of the liquid cooling device of the present disclosure. The liquid cooling device of the present disclosure mainly comprises a base seat 10, a deflection cover 20, a bottom seat 30, and a pump 40. The base seat 10 has an inlet channel 11, an outlet channel 12, a cavity 13, an outlet chamber 14, and a connecting hole 15. In one embodiment, the base seat 10 is a rectangular block comprising a first seat 101, a second seat 102, and a third seat 103 stacked sequentially, but the present disclosure is not limited to this embodiment. The inlet channel 11 and the cavity 13 are formed on the first seat 101, and the inlet channel 11 communicates with the cavity 13. Specifically, the cavity 13 is formed on a bottom surface of the first seat 101. The outlet channel 12 is formed on the second seat 102.In this embodiment, the inlet channel 11 and the second channel 12 are both formed on one front side of the base seat 10, but in other embodiments, the inlet channel 11 and the second channel 12 can also both be formed on the opposite side of the base seat 10 or on different sides of the base seat 10. An upper section of the second seat 102 and a lower section of the third seat 103 together form the outlet chamber 14, and the outlet channel 12 communicates with the outlet chamber 14. The connecting hole 15 is located approximately in the center of the base seat 10 and passes through the first seat 101 and the second seat 102, thus communicating with the outlet chamber 14. The pump 40 is arranged on the third seat 103. An impeller 41 of the pump 40 is located in the outlet chamber 14 between the second seat 102 and the third seat 103.Since the structure and working principle of pump 40 are well known in the field, they will not be described in detail here. The deflector cover 20 is arranged in the base seat 10. Specifically, the deflector cover 20 is in the form of a rectangular shell and is fixed in the cavity 13 of the base seat 10. The deflector cover 20 has a concave recess 21, several through-slots 22, and a return groove assembly 23. The concave recess 21 is concave on one side of the deflector cover 20, which faces the cavity 13, to give the deflector cover 20 its rectangular shell shape. The concave recess 21 of the deflector cover 20 and the cavity 13 of the base seat 10 together form an inlet chamber 16. The return groove assembly 23 is arranged corresponding to a location of the connecting hole 15 and is located approximately in the center of the deflector cover 20. The return groove group 23 is arranged between each of the through slots 22.In other words, the return groove group 23 is located directly below the connection hole 15 and is connected to the connection hole 15. The base seat 30 comprises a base plate 31 and several lamellae 32. The base seat 10 is arranged on the base plate 31 of the base seat 30 to fix the deflection cover 20 in the base seat 10. Each of the lamellae 32 is arranged on the base plate 31 and pressed against the deflection cover 20. Specifically, an upper section of each of the lamellae 32 is pressed against a lower section of the deflection cover 20 to fix the deflection cover 20 in the base seat 10. Furthermore, the lamellae 32 can be attached to the base plate 31 by welding or peeling, so that they are in a single-piece form; this disclosure does not limit this. Several flow channels 33 are formed between each pair of the lamellae 32, so that two ends of each of the lamellae 32 each form a secondary chamber 34 with the base seat 10, the deflection cover 20 and the base plate 31.In other words, each of the bypass chambers 34 can be interconnected by each of the flow channels 33. As shown in Figs. 5, 6, 7, 8 and 9, the inlet chamber 16 is connected to each of the bypass chambers 34 through each of the through-slots 22 of the deflection cover 20. Each of the bypass chambers 34 is connected to the return groove group 23 through each of the flow channels 33. The return groove group 23 is connected to the outlet chamber 14 through the connecting hole 15. Therefore, the coolant flows into the inlet chamber 16 after entering the base seat 10 from the inlet channel 11, the coolant then enters the flow channels 33 from two ends of the fins 32, the coolant then sequentially goes upwards through the return groove group 23 and the connecting hole 15 from the center of the flow channels 33 to enter the outlet chamber 14, and the coolant finally leaves the outlet channel 12.In this way, the coolant can flow evenly from the inlet chamber 16 into the shunt chambers 34 to improve the flow and heat exchange efficiency of the coolant as it passes through the flow channels 33. Figures 10 and 11 show the second embodiment of the liquid cooling device of the present disclosure. The main difference between the first embodiment and the second embodiment is that the base seat 10 is formed in a single piece. In other words, the base seat 10 of the second embodiment does not include the first seat 101, the second seat 102, and the third seat 103; that is, the inlet channel 11, the outlet 12, the cavity 13, the outlet chamber 14, and the connecting hole 15 are all formed on a single element (base seat 10) in order to efficiently improve the sealing and watertight performance and effectively reduce assembly time and maintenance difficulty.Details are provided below. As shown in Figs. 1, 2, 8, and 12, each of the through-slots 22 of the embodiment is trapezoidal, and each through-slot 22 is arranged at four corners of the deflector cover 20. Each through-slot 22 has a penetration area (not labeled in the figures) that penetrates the deflector cover 20. In the embodiment, the penetration area of ​​the through-slot 22 adjacent to the inlet channel 11 is smaller than the penetration area of ​​any of the other through-slots 22, and the penetration area of ​​the through-slot 22 arranged at a diagonal corner of the inlet channel 11 is larger than the penetration area of ​​any of the other through-slots 22.In other words, since the penetration area of ​​the through-slot 22 adjacent to the inlet channel 11 is smaller, the flow resistance of the through-slot 22 adjacent to the inlet channel 11 is greater. Since the penetration area of ​​the through-slot 22 located at the diagonal corner of the inlet channel 11 is larger, the flow resistance of the through-slot 22 located at the diagonal corner of the inlet channel 11 is less. Therefore, when the coolant enters the inlet chamber 16 from the inlet channel 11, the coolant would, due to the difference in flow resistance, flow uniformly through the through-slots 22 into the shunt chambers 34, rather than directly through the through-slot 22 adjacent to the inlet channel 11, thus ensuring that the coolant flow is the same in each of the shunt chambers 34. As shown in Figs. 1, 2, 5, 6, and 9, the return groove assembly 23 comprises a confluence groove 231 and a buffer groove 232. The confluence groove 231 is formed on one side of the deflection cover 20 facing each of the lamellae 32, and the buffer groove 232 is formed on one side of the deflection cover 20 facing the cavity 13, so that the flow channels 33 can communicate sequentially with the outlet chamber 14 via the confluence groove 231, the buffer groove 232, and the connecting hole 15. Specifically, the confluence groove 231 is strip-shaped and perpendicular to each of the lamellae 32, and the buffer groove 232 is circular and arranged corresponding to a location of the connecting hole 15.In this embodiment, a location of the confluence groove 231 corresponding to the buffer groove 232 (i.e., a center of the confluence groove 231) is wider, allowing the coolant more space in the center of the confluence groove 231 to converge and flow into the buffer groove 232 without obstruction. Specifically, the confluence groove 231 of this embodiment comprises a wide section 2311 and a pair of narrow sections 2312 that are narrower than the wide section. The wide section 2311 corresponds to the buffer groove 232 and the connecting hole 15, so that it is located at the center of the confluence groove 231, and the wide section 2311 is connected between each of the narrow sections 2312. Furthermore, the wide section 2311 of the confluence groove 231 is completely contained within a region of the buffer groove 232.Therefore, the coolant can gradually converge towards the wide section 2311 as it enters the confluence groove 231, the coolant then flows through the wide section 2311 to enter the buffer groove 232, and the coolant finally enters the outlet chamber 14 through the connecting hole 15. Details are provided below. The liquid cooling device of the present disclosure further comprises a mounting element 50. The mounting element 50 is arranged between each of the fins 32 and the deflection cover 20. Specifically, the mounting element 50 comprises a plate body 51 and a frame body 52. ​​The plate body 51 is rectangular and connected to the frame body 52, and the plate body 51 has a through-groove 511 corresponding to the shape of the confluence groove 231 of the deflection cover 20. A positioning rib 512 extends from two ends of the plate body 51 facing the base seat 30. The positioning ribs 512 are fixed to two opposite sides of the fins 32 to secure the mounting element 50 to the base seat 30, so that the coolant can only enter the flow channels 33 from the bypass chambers 34.The frame body 52 is received in the base seat 10 and elastically positioned between the bottom seat 30, the base seat 10, and the deflection cover 20 to achieve a sealing and leak-proof effect. Furthermore, a pair of limiting plates 24 extends parallel to the return groove group 23 from the lower section of the deflection cover 20. The limiting plates 24 are fixed to two opposite sides of the plate body 62 to confine the mounting element 50. Therefore, the mounting element 50 is inserted between the bottom seat 30 and the deflection cover 20 to achieve the sealing and leak-proof effect and to prevent the deflection cover 20 from directly contacting the bottom seat 30. Fig. 13 shows the third embodiment of the liquid cooling device of the present disclosure. The main differences between the first embodiment and the third embodiment are that each of the through-slots 22 is circular and each of the through-slots 22 surrounds the return groove group 23, such that they are configured adjacent to an edge of the deflection cover 20. In particular, the through-slots 22 of the embodiment are not only arranged at the edge of the deflection cover 20, but also between any two adjacent corners. That is, the number of through-slots 22 of the second embodiment is more than twice the number of through-slots 22 of the first embodiment.In this embodiment, the penetration area of ​​the through-slot 22 adjacent to the inlet channel 11 is smaller than or equal to the penetration area of ​​any of the other through-slots 22, and the penetration area of ​​the through-slot 22 located at a diagonal corner of the inlet channel 11 is larger than or equal to the penetration area of ​​any of the other through-slots 22. Therefore, the flow resistance of each of the through-slots 22 can be further distributed to increase the flow rate of the coolant passing through the deflection cover 20, allowing the coolant to flow uniformly through the through-slots 22 to enter the shunt chambers 34, thus improving coolant flow and heat exchange efficiency. Fig. 14 shows the fourth embodiment of the liquid cooling device of the present disclosure. The main differences between the first embodiment and the fourth embodiment are that each of the through-slots 22 is strip-shaped and each of the through-slots 22 is arranged parallel to each other on two opposite sides of the return groove group 23. Specifically, the fourth embodiment has four through-slots 22, and the length of each through-slot 22 is approximately equal to the confluence groove 231 of the return groove group 23. The widths of the two through-slots 22 adjacent to the return groove group 23 are smaller than the widths of the two through-slots 22 furthest from the return groove group 23.Therefore, most of the coolant can enter the shunt chambers 34 through the two through-slots 22 located away from the return groove group 23; other coolant can enter the shunt chambers 34 directly through the two through-slots 22 adjacent to the return groove group 23 to increase the coolant flow rate and avoid blockage in the shunt chambers 34. Fig. 15 shows the fifth embodiment of the liquid cooling device of the present disclosure. The main differences between the fourth and fifth embodiments are that the number of through-slots 22 is only two, and the through-slots 22 are arranged on two opposite sides of the return groove group 23. In other words, the coolant of the fifth embodiment passes only through the two through-slots 22 to enter the shunt spaces 34. It is worth noting that the widths of the through-slots 22 of the fifth embodiment are both larger than the widths of the through-slots 22 of the fourth embodiment in order to increase the flow rate of the coolant passing through the deflector cover 20, thus ensuring that the coolant cannot become blocked in the shunt spaces 34. In the liquid cooling device of the present disclosure, the cavity 13 and the concave recess 21 are each formed on the base seat 10 and on the deflection cover 20, which is arranged in the base seat 10, and the cavity 13 and the concave recess 21 together form the inlet chamber 16 as a buffer, so that the coolant, after entering the base seat 10 from the inlet channel 11, can flow into the inlet chamber 16, the coolant then passes through the through-slots 22 of the deflection cover 20 to flow uniformly into the bypass chambers 34 and the flow channels 33 to improve the flow and the heat exchange efficiency.

Claims

A liquid cooling device comprising: a base seat (10) with an inlet channel (11), an outlet channel (12), a cavity (13), an outlet chamber (14), and a connecting hole (15), wherein the inlet channel (11) is connected to the cavity (13) and the outlet channel (12) is connected to the outlet chamber (14); a deflection cover (20) arranged in the base seat (10) comprising a concave cavity (21), multiple through-slots (22), and a return groove group (23), wherein the concave cavity (21) is concave on one side of the deflection cover (20) facing the cavity (13) to form an inlet chamber (16) with the cavity (13), wherein the return groove group (23) is arranged corresponding to a location of the connecting hole (15) and between each of the through-slots (22) is ordered;and a base seat (30) with a base plate (31) and several lamellae (32), wherein the base seat (10) is arranged on the base seat (30), each of the lamellae (32) is arranged on the base plate (31) and is positioned against the deflection cover (20), several flow channels (33) are formed between each pair of lamellae (32), two ends of each of the lamellae (32) each form a bypass chamber (34) with the base seat (10), the deflection cover (20) and the base plate (31), the inlet chamber (16) is connected to each of the bypass chambers (34) through each of the through-slots (22), each of the bypass chambers (34) is connected to the backflow groove group (23) through each of the flow channels (33), the backflow groove group (23) is connected to the outlet chamber (14) through the connecting hole (15) stands.; Liquid cooling device according to claim 1, wherein each of the through-slots (22) comprises a penetration area that penetrates the deflection cover (20), the penetration area of ​​the through-slot (22) adjacent to the inlet channel (11) is smaller than the penetration area of ​​any of the other through-slots (22), the penetration area of ​​the through-slot (22) that is arranged in a diagonal corner of the inlet channel (11) is larger than the penetration area of ​​any of the other through-slots (22). Liquid cooling device according to claim 2, wherein each of the through-slots (22) is trapezoidal, each of the through-slots (22) is arranged at four corners of the deflection cover (20). Liquid cooling device according to claim 2, wherein each of the through-slots (22) comprises a penetration area that penetrates the deflection cover (20), the penetration area of ​​the through-slot (22) adjacent to the inlet channel (11) is smaller than or equal to the penetration area of ​​any of the other through-slots (22), the penetration area of ​​the through-slot (22) that is arranged at a diagonal corner of the inlet channel (11) is larger than or equal to the penetration area of ​​any of the other through-slots (22). Liquid cooling device according to claim 4, wherein each of the through-slots (22) is circular, each of the through-slots (22) surrounds the return groove group (23) such that it is configured adjacent to an edge of the deflecting cover (20). Liquid cooling device according to claim 1, wherein each of the through-slots (22) is strip-shaped, each of the through-slots (22) is arranged parallel on two opposite sides of the return groove group (23). Liquid cooling device according to claim 1, wherein the return groove group (23) comprises a confluence groove (231) and a buffer groove (232), the confluence groove (231) being formed on a side of the deflection cover (20) facing each of the fins (32), the buffer groove (232) being formed on a side of the deflection cover (20) facing the cavity (13), each of the flow channels (33) being sequentially connected to the outlet chamber (14) through the confluence groove (231), the buffer groove (232) and the connecting hole (15). Liquid cooling device according to claim 7, wherein the confluence groove (231) is strip-shaped and perpendicular to each of the fins (32), the buffer groove (232) is circular and is arranged according to a location of the connecting hole (15). Liquid cooling device according to claim 8, wherein the confluence groove (231) comprises a wide section (2311) and a pair of narrow sections (2312) which are narrower than the wide section (2311), the wide section (2311) corresponding to the buffer groove (232) and connected between each of the narrow sections (2312). Liquid cooling device according to claim 1, which further comprises a mounting element (50), wherein the mounting element (50) is arranged between each of the fins (32) and the deflection cover (20).

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