Large radiator, radiator device and radiator system with K-shaped radiator teeth

Abstract

The present invention discloses a large heat sink, a heat sink device and a heat sink system with a K-shaped heat sink tooth shape. The large heat sink includes a straight-through portion and a right-angle portion; the straight-through portion includes a plurality of mutually parallel straight-through heat sink teeth; the right-angle portion includes a closed edge and three open edges, the closed edge is adjacent to the straight-through portion, the three open edges include a long edge and two short edges, and a plurality of heat sink teeth are provided on the three open edges perpendicular to each edge, and the short-side heat sink teeth on the two short edges respectively form a right angle with the long-side heat sink teeth on the long edges at the junction, respectively forming a first right-angle zone and a second right-angle zone, and the first right-angle zone, the second right-angle zone and the straight-through portion form a K-shaped heat sink tooth shape. In the large heat sink, the heat sink device and the heat sink system with a K-shaped heat sink tooth shape of the present invention, the first right-angle zone, the second right-angle zone and the straight-through portion on the large heat sink form a K-shaped heat sink tooth shape, the straight-through portion and the right-angle portion are independent of each other in distribution, and the heat sink tooth height is reduced, thereby achieving the purpose of reducing the product volume.

Description

Technical Field

[0001] The invention relates to the field of radiators, and in particular to a large radiator with K-shaped radiating teeth, a radiating device and a radiating system. Background Art

[0002] In the 5G commercial market, pRRU (pico base station) occupies a very important share. In addition to the competition of pRRU's own functions, the miniaturization of product size is also an important competitive point in the industry. The competition of pRRU size is essentially the competition of heat dissipation capacity. Under the same internal heat conduction conditions, the essence of the heat dissipation capacity competition is the design of the heat dissipation tooth shape.

[0003] The existing pRRU products in the industry have four main types of heat dissipation tooth shapes: straight-through, non-shaped, X-shaped, and cross-shaped. These four tooth shapes play different heat dissipation functions on single-board (i.e., 1 PCB) solution products, but cannot further exert the optimal heat dissipation capabilities on dual-board (i.e., 2 PCB) solution products.

[0004] The existing technology is mainly queried from two aspects: special-shaped tooth patents and existing pRRU product heat dissipation teeth, which are summarized as follows:

[0005] 1. Based on the keywords such as "heat dissipation gear" and "special-shaped gear", the patent search is carried out. The existing patents related to special-shaped heat dissipation gears are as follows: Figure 1 As shown, it can be seen that: according to the heat dissipation requirements of each module inside the product, the inventor breaks the conventional heat dissipation tooth arrangement method and designs Figure 1 The special-shaped heat dissipation teeth shown improve and enhance the heat dissipation performance of the product.

[0006] 2. Based on the keywords such as "pRRU" and "pico base station", the network search shows that there are four main types of pRRU heat dissipation teeth in the industry: straight-through type, "non" type, "X" type, and "cross" type. Figure 2 The evaluation shows that these four types of pRRU teeth are mostly used on one-board pRRUs and cannot further exert better heat dissipation capabilities on two-board pRRUs.

[0007] It can be seen that the main disadvantages of the prior art are as follows:

[0008] Disadvantage 1: The existing special-shaped tooth design is mostly used for heat dissipation optimization of vertically installed products, which is not suitable for pRRUs that are mainly installed on the ceiling.

[0009] Disadvantage 2: The existing four types of pRRU teeth are mostly used on one-board pRRUs, and cannot further exert better heat dissipation capabilities on double-board pRRUs. Summary of the invention

[0010] The technical problem to be solved by the present invention is to provide an improved heat dissipation device and heat dissipation system for double PCB boards in view of the above defects.

[0011] The technical solution adopted by the present invention to solve the technical problem is: providing a large heat sink with a K-shaped heat dissipation tooth shape, the large heat sink comprising a straight-through portion and a right-angle portion;

[0012] Wherein, the straight-through portion includes a plurality of mutually parallel straight-through heat dissipation teeth;

[0013] The right-angle portion includes a closed edge and three open edges, the closed edge is adjacent to the straight-through portion, the three open edges include a long side and two short sides, and a number of heat dissipation teeth are provided on the three open sides perpendicular to each edge, the short-side heat dissipation teeth on the two short sides respectively form a right angle with the long-side heat dissipation teeth on the long sides at the junction, and form a first right-angle zone and a second right-angle zone respectively, and the first right-angle zone, the second right-angle zone and the straight-through portion form a K-type heat dissipation tooth shape.

[0014] Preferably, the large radiator comprises two groups of right-angled portions, the straight-through portion is arranged between the two groups of right-angled portions, and the closed edges of the two groups of right-angled portions are respectively arranged back-to-back and parallel to the straight-through heat dissipation teeth on both sides of the straight-through portions.

[0015] A heat dissipation device with a K-shaped heat dissipation tooth shape is also provided, comprising a large heat dissipation device and a small heat dissipation device, wherein the large heat dissipation device comprises a straight-through portion and a right-angle portion, and a receiving position for receiving the small heat dissipation device is provided on the large heat dissipation device;

[0016] Wherein, the straight-through portion includes a plurality of mutually parallel straight-through heat dissipation teeth;

[0017] The right-angle portion includes a closed edge and three open edges, the closed edge is adjacent to the straight-through portion, the three open edges include a long side and two short sides, and a number of heat dissipation teeth are provided on the three open sides perpendicular to each edge, the short-side heat dissipation teeth on the two short sides respectively form a right angle with the long-side heat dissipation teeth on the long sides at the junction, and form a first right-angle zone and a second right-angle zone respectively, and the first right-angle zone, the second right-angle zone and the straight-through portion form a K-type heat dissipation tooth shape.

[0018] Preferably, the large radiator comprises two groups of right-angled portions, the straight-through portion is arranged between the two groups of right-angled portions, and the closed edges of the two groups of right-angled portions are respectively arranged back-to-back and parallel to the straight-through heat dissipation teeth on both sides of the straight-through portions.

[0019] Preferably, a low-tooth area with a tooth height of H1 is provided on the straight-through portion, the accommodating position is located in the low-tooth area, and the highest tooth height on the large radiator is H3, H1<H3.

[0020] A heat dissipation system with a K-shaped heat dissipation tooth shape is also provided, comprising a main function board, a large heat sink, a port board and a small heat sink arranged in sequence from bottom to top; the large heat sink comprises a straight-through portion and a right-angle portion, and a receiving position for receiving the port board is provided on the large heat sink;

[0021] Wherein, the straight-through portion includes a plurality of mutually parallel straight-through heat dissipation teeth;

[0022] The right-angle portion includes a closed edge and three open edges, the closed edge is adjacent to the straight-through portion, the three open edges include a long side and two short sides, and a number of heat dissipation teeth are provided on the three open sides perpendicular to each edge, the short-side heat dissipation teeth on the two short sides respectively form a right angle with the long-side heat dissipation teeth on the long sides at the junction, and form a first right-angle zone and a second right-angle zone respectively, and the first right-angle zone, the second right-angle zone and the straight-through portion form a K-type heat dissipation tooth shape.

[0023] Preferably, the large radiator comprises two groups of right-angled portions, the straight-through portion is arranged between the two groups of right-angled portions, and the closed edges of the two groups of right-angled portions are respectively arranged back-to-back and parallel to the straight-through heat dissipation teeth on both sides of the straight-through portions.

[0024] Preferably, the area ratio of the two groups of right-angle parts is 1:1.

[0025] Preferably, a low-tooth area with a tooth height of H1 is provided on the straight-through portion, the accommodating position is located in the low-tooth area, and the highest tooth height on the large radiator is H3, H1<H3.

[0026] Preferably, the port plate includes a port interface; the large radiator also includes a middle tooth area, the middle tooth area includes a plurality of middle heat dissipation teeth, the plurality of middle heat dissipation teeth are parallel to each other, and the tooth height of the middle heat dissipation teeth is H0, H1<H0<H3; the middle tooth area is arranged adjacent to the port interface.

[0027] The beneficial effects of implementing the present invention are as follows: in the K-type heat dissipation tooth-shaped heat dissipation device and heat dissipation system of the present invention, by separately arranging a large heat sink and a small heat sink, the port board has an independent air duct design independent of the main function board, thereby solving the mutual baking of the hot air flow between the two PCBs on the dual-board pRRU product, optimizing the heat dissipation of the dual-board pRRU product, and further reducing the temperature of each chip in the product, thereby reducing the product volume and improving market competitiveness.

[0028] In addition, the first right-angle area, the second right-angle area and the straight-through part on the large heat sink of the present invention form a K-type heat dissipation tooth shape. The straight-through part effectively conducts the airflow path of the double-board part, allowing each to go its own way to avoid baking the port interface; the right-angle part further reduces the average temperature of the PCB by increasing the airflow inlet area. The two flow fields are independent of each other in distribution and complement each other in heat dissipation, reducing the temperature of the double-board pRRU, and further reducing the heat dissipation tooth height, ultimately achieving the purpose of reducing the product volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] Figure 1 It is a structural schematic diagram of common special-shaped teeth in the prior art;

[0031] Figure 2 It is a schematic diagram of the structure of the heat dissipation tooth type in the field of pico base stations in the prior art;

[0032] Figure 3a is a schematic diagram of the separation state of the main function board and the port board in some embodiments of the present invention;

[0033] Figure 3b is a schematic diagram of the installation status of the main function board and the port board in some embodiments of the present invention;

[0034] Figure 4a is a schematic diagram of the separation state of a large structural member and a small structural member in some embodiments of the present invention;

[0035] Figure 4b is a schematic diagram of the installation state of large structural parts and small structural parts in some embodiments of the present invention;

[0036] Figure 5a is a schematic diagram of an exploded structure of a heat dissipation system with a K-shaped heat dissipation tooth shape in some embodiments of the present invention;

[0037] Figure 5b yes Figure 5a Top view of the medium K-type heat dissipation tooth shape;

[0038] Figure 6 is a schematic diagram of the three-dimensional structure of a heat dissipation system with a K-shaped heat dissipation tooth shape in some embodiments of the present invention;

[0039] Figure 7 yes Figure 5a Schematic diagram of the tooth-shaped partition of the medium and large radiator;

[0040] Figure 8 is a bar graph comparing the tooth height of the K-type heat dissipation tooth shape and the existing tooth shape in the heat dissipation system with the K-type heat dissipation tooth shape in some embodiments of the present invention;

[0041] Figure 9a Schematic diagram of the structure explosion of the heat dissipation system with K-shaped heat dissipation teeth in other embodiments of the present invention;

[0042] Figure 9b yes Figure 9a Top view of the double K-type heat dissipation teeth;

[0043] Fig.10a It is a schematic diagram of the structure explosion of a large heat sink with K-shaped heat dissipation teeth in some embodiments of the present invention;

[0044] Fig.10b yes Fig.10a Top view of the medium K-type heat dissipation tooth shape;

[0045] Fig.11a Schematic diagram of the structure explosion of a large heat sink with K-shaped heat dissipation teeth in other embodiments of the present invention;

[0046] Fig.11b yes Fig.11a Top view of the medium double K-type heat sink teeth. DETAILED DESCRIPTION

[0047] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0048] FIG5 shows a heat dissipation system with a K-shaped heat dissipation tooth shape in some embodiments of the present invention, which is used for heat dissipation of horizontally mounted products with a dual-board architecture, such as a dual-board pRRU. The heat dissipation system in the embodiment of the present invention includes a dual PCB board and a heat dissipation device with a K-shaped heat dissipation tooth shape, wherein the dual PCB board includes a main function board 40 and a port board 20 arranged on the main function board 40, and the heat dissipation device with a K-shaped heat dissipation tooth shape includes a large heat sink 30 and a small heat sink 10 respectively arranged corresponding to the main function board 40 and the port board 20, and the arrangement method is to arrange the main function board 40, the large heat sink 30, the port board 20 and the small heat sink 10 in sequence from bottom to top, and the mutual baking between the two PCBs on the dual-board pRRU is solved by the independent air duct design between the large heat sink 30 and the small heat sink 10.

[0049] Among them, the double-board pRRU consists of two PCBs, such as Figure 3a and 3b The port board 20 and the main function board 40 are combined. In actual product design, the port board 20 will be shifted left and right at its location according to the layout requirements. Figure 5a-7 As shown, in some embodiments, the port board 20 includes a port interface 203 .

[0050] Combination Figure 5a-7As shown, the large heat sink 30 is provided with a low tooth area 2011 for accommodating the port plate 20, the tooth height of the low tooth area 2011 is H1, the tooth height of the small heat sink 10 is H2, and the highest tooth height on the large heat sink 30 is H3, H1<H3.

[0051] Preferably, the large heat sink 30 includes a straight-through portion 201 and a right-angle portion 202, and a receiving position for receiving the port plate 20 is provided on the large heat sink 30, and the receiving position also receives the small heat sink 10. Specifically, the port plate 20 and the small heat sink 10 are stacked in sequence on the receiving position. Preferably, the receiving position is located at the low-tooth area 2011 of the straight-through portion 201. Alternatively, the receiving position can be provided on either the straight-through portion 201 or the right-angle portion 202, or can be partially occupied on the straight-through portion 201 and the right-angle portion 202, respectively. No specific limitation is made here, as long as the relevant functions can be realized.

[0052] Among them, the straight-through portion 201 includes a high tooth area 2013 and a low tooth area 2011, the high tooth area 2013 includes a plurality of high heat dissipation teeth, the plurality of high heat dissipation teeth are parallel to each other, and the high heat dissipation teeth have a tooth height of H3; the low tooth area 2011 includes a plurality of low heat dissipation teeth, the plurality of low heat dissipation teeth are parallel to each other, and the low heat dissipation teeth have a tooth height of H1; the small heat sink 10 includes a plurality of small heat dissipation teeth, the plurality of small heat dissipation teeth are parallel to each other, and the small heat dissipation teeth have a tooth height of H2. In some embodiments, H1+H2≤H3. Alternatively, H1+H2 is slightly less than or slightly greater than H3, and no specific limitation is made here, as long as the relevant functions can be realized.

[0053] Combination Figure 5a-7 As shown, the right-angle portion 202 includes a closed edge and three open edges, the closed edge is adjacent to the straight-through portion 201, and a number of heat dissipation teeth are provided on the three open edges perpendicular to each edge, and the three open edges include a long side and two short sides, and the short-side heat dissipation teeth on the two short sides respectively form a right angle with the long-side heat dissipation teeth on the long sides at the junction, and respectively form a first right-angle area 2021 and a second right-angle area 2022, and the first right-angle area 2021, the second right-angle area 2022 and the straight-through portion 201 form a K-type heat dissipation tooth shape. In some embodiments, the first right-angle area 2021 and the second right-angle area 2022 are both rectangular. Preferably, the first right-angle area 2021 and the second right-angle area 2022 have the same area. It can be understood that all tooth heights of the right-angle part 202 can be H3, or all tooth heights of the right-angle part 202 can be slightly higher or slightly lower than H3, or all tooth heights of the right-angle part 202 can be different within a certain small range. No specific limitation is made here, as long as the relevant functions can be achieved.

[0054] As shown in Figures 5-8, the advantage of the K-type heat dissipation tooth shape is that the straight-through part 201 effectively conducts the airflow path of the double-board part, allowing each to go its own way and avoid it from baking the port interface 203; the right-angle part 202 further reduces the average temperature of the PCB by increasing the airflow inlet area. The two flow fields are independent of each other in distribution, and complement each other in heat dissipation, reducing the temperature of the double-board pRRU, and then further reducing the heat dissipation tooth height, ultimately achieving the purpose of reducing the product volume.

[0055] In some embodiments, the port plate 20 includes a port interface 203; the large radiator 30 also includes a middle tooth area 2012, the middle tooth area 2012 includes a plurality of middle heat dissipation teeth, the plurality of middle heat dissipation teeth are parallel to each other, and the tooth height of the middle heat dissipation teeth is H0, H1<H0<H3; the middle tooth area 2012 is arranged adjacent to the port interface 203.

[0056] Preferably, a heat dissipation gap is left between the middle tooth area 2012 and the port interface 203. The advantage of this is that the heat dissipation gap can better dissipate the heat of the port interface 203.

[0057] In some embodiments, in combination Figure 4a , 4b As shown in FIGS. 5a and 5b, the main function board 40 and the large radiator 30 form a large structural member 200, and the port board 20 and the small radiator 10 form a small structural member 100. The large structural member 200 and the small structural member 100 are detachably connected.

[0058] Alternatively, combine Figure 4a , 4b , 5a, 5b, the small structure 100 further includes a small shielding cover 50 disposed between the port plate 20 and the large heat sink 30. And / or, in some embodiments, the large structure 200 further includes a large shielding cover 60 disposed below the main functional board 40. And / or, in some embodiments, the large structure 200 further includes a beautifying cover 70 disposed below the large shielding cover.

[0059] In some embodiments, the K-type heat dissipation tooth shape of the heat dissipation system with the K-type heat dissipation tooth shape in the embodiment of the present invention is compared with the existing tooth shape, and the tooth height, i.e., the volume, required for each tooth shape is compared by increasing the tooth height of different tooth shapes while ensuring that the temperature of the key chip is the same, as shown in Figure 9. As can be seen from Figure 9, when the temperature of the key chip is the same, the K-type tooth can obtain the lowest tooth height, i.e., the smallest volume.

[0060] Therefore, K-type heat dissipation is the most excellent in heat dissipation on dual-board pRRU. The use of K-type teeth can improve the heat dissipation of dual-board pRRU, and the volume is reduced by 0.2L, which is 6% lower than the existing mature products with the same power consumption and the smallest volume in the industry, greatly improving the market competitiveness of the product.

[0061] In some embodiments, the K-type heat dissipation tooth shape can also be evolved to form Figure 9a-9b The double K-type heat dissipation tooth design shown. Figure 6 , 7 As shown in FIGS. 9a and 9b, the large heat sink 30 includes two groups of right-angled portions 202, the straight-through portion 201 is arranged between the two groups of right-angled portions 202, and the closed edges of the two groups of right-angled portions 202 are respectively arranged in parallel with the straight-through heat dissipation teeth on both sides of the straight-through portion 201. Preferably, the area ratio of the two groups of right-angled portions 202 is 1:1.

[0062] In some embodiments of the present invention, Fig.10a and 10b The large heat sink 30 shown has a K-shaped heat dissipation tooth shape. The K-shaped heat dissipation tooth shape of the large heat sink 30 is a single K-shaped shape, which is consistent with the large heat sink 30 in the heat dissipation system of the aforementioned embodiment, and will not be described again here.

[0063] In some embodiments of the present invention, Fig.11a and 11b The large heat sink 30 shown has a K-shaped heat dissipation tooth shape. The K-shaped heat dissipation tooth shape of the large heat sink 30 is a double K-shaped shape, which is consistent with the large heat sink 30 in the heat dissipation system of the aforementioned embodiment and will not be described again here.

[0064] In other embodiments of the present invention, a heat dissipation device with a K-shaped heat dissipation tooth shape is also provided, and the heat dissipation device includes a large heat dissipation device 30 and a small heat dissipation device 20, and a receiving position for receiving the small heat dissipation device 10 is provided on the large heat dissipation device 30. The large heat dissipation device 30 and the small heat dissipation device 20 are consistent with those in the heat dissipation system of the aforementioned embodiment, and will not be described in detail here.

[0065] The large heat sink, heat sink device and heat sink system with K-shaped heat dissipation teeth implemented in the present invention can be used in pRRU products, and in the future can be used in any natural heat dissipation products with a double-board structure that are ceiling-mounted.

[0066] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A heat dissipation device with a K-shaped heat dissipation tooth shape, characterized in that: Comprising a large radiator (30) and a small radiator (10), the large radiator (30) comprising a straight portion (201) and a right-angle portion (202), and a receiving position for receiving the small radiator (10) being provided on the large radiator (30); Wherein, the straight-through portion (201) comprises a plurality of mutually parallel straight-through heat dissipation teeth; The right-angle portion (202) comprises a closed edge and three open edges, the closed edge being adjacent to the straight-through portion (201), the three open edges comprising a long edge and two short edges, a plurality of heat dissipation teeth being provided on the three open edges perpendicular to the edges, the short-side heat dissipation teeth on the two short edges respectively forming a right angle with the long-side heat dissipation teeth on the long edges at a junction, and respectively forming a first right-angle region (2021) and a second right-angle region (2022), the first right-angle region (2021), the second right-angle region (2022) and the straight-through portion (201) forming a K-shaped heat dissipation tooth shape.

2. The heat dissipation device with K-shaped heat dissipation teeth according to claim 1, characterized in that: The large heat sink (30) comprises two groups of right-angled portions (202), the straight-through portion (201) being arranged between the two groups of right-angled portions (202), and the closed edges of the two groups of right-angled portions (202) being arranged in parallel and back-to-back with the straight-through heat dissipation teeth on both sides of the straight-through portion (201).

3. The heat dissipation device with K-shaped heat dissipation teeth according to claim 1 or 2, characterized in that: The through portion (201) is provided with a low tooth area (2011) having a tooth height of H1, the accommodation position is located in the low tooth area (2011), and the highest tooth height on the large heat sink (30) is H3, where H1<H3.

4. A heat dissipation system with a K-shaped heat dissipation tooth shape, characterized in that: The invention comprises a main function board (40), a large heat sink (30), a port board (20) and a small heat sink (10) which are arranged in sequence from bottom to top; the large heat sink (30) comprises a straight-through portion (201) and a right-angle portion (202); a receiving position for receiving the port board (20) is provided on the straight-through portion (201) of the large heat sink (30); and the small heat sink (10) is provided on the port board (20); Wherein, the straight-through portion (201) comprises a plurality of mutually parallel straight-through heat dissipation teeth; The right-angle portion (202) comprises a closed edge and three open edges, the closed edge being adjacent to the straight-through portion (201), the three open edges comprising a long edge and two short edges, a plurality of heat dissipation teeth being provided on the three open edges perpendicular to the edges, the short-side heat dissipation teeth on the two short edges respectively forming a right angle with the long-side heat dissipation teeth on the long edges at a junction, and respectively forming a first right-angle region (2021) and a second right-angle region (2022), the first right-angle region (2021), the second right-angle region (2022) and the straight-through portion (201) forming a K-shaped heat dissipation tooth shape.

5. The heat dissipation system with K-shaped heat dissipation teeth according to claim 4, characterized in that: The large heat sink (30) comprises two groups of right-angled portions (202), the straight-through portion (201) being arranged between the two groups of right-angled portions (202), and the closed edges of the two groups of right-angled portions (202) being arranged in parallel and back-to-back with the straight-through heat dissipation teeth on both sides of the straight-through portion (201).

6. The heat dissipation system with K-shaped heat dissipation teeth according to claim 5, characterized in that: The area ratio of the two groups of right-angle portions (202) is 1:

1.

7. The heat dissipation system with K-shaped heat dissipation teeth according to any one of claims 4 to 6, characterized in that: A low tooth region (2011) with a tooth height of H1 is provided on the straight-through portion (201), the accommodation position is located in the low tooth region (2011), the highest tooth height on the large heat sink (30) is H3, and H1 < H3.

8. The heat dissipation system with K-shaped heat dissipation teeth according to claim 7, characterized in that: The port board (20) includes a port interface (203); the large heat sink (30) further includes a medium tooth region (2012), the medium tooth region (2012) includes several medium heat dissipation teeth, several of the medium heat dissipation teeth are parallel to each other, and the tooth height of the medium heat dissipation teeth is H0, H1 < H0 < H3; the medium tooth region (2012) is arranged adjacent to the port interface (203).

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