A heat dissipation plug box, heat dissipation cabinet and backplane communication system

Abstract

The embodiments of the present invention relate to a field, and disclose a heat dissipation plug-in box, including a cabinet, on which an air inlet, two air supply ports, and an air outlet are provided, and the receiving space includes an air inlet area, and a heat source area connected to the air inlet area; the opening directions of the air inlet and the air supply port intersect at the air inlet area; the cabinet includes a plurality of baffles arranged in the air inlet area and spaced apart from each other, and each of the baffles includes two wind shielding surfaces facing the two air supply ports respectively, and air flow channels facing the air inlet and connecting the air inlet area to the heat source area are formed between two adjacent baffles and between the inner wall of the cabinet and the adjacent baffles. The present invention also provides a heat dissipation cabinet and a backplane communication system. The heat dissipation plug-in box, heat dissipation cabinet, and backplane communication system provided by the present invention can effectively improve the heat dissipation effect of communication equipment.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication equipment, and in particular to a heat dissipation plug-in box for communication equipment, a heat dissipation cabinet having the heat dissipation plug-in box, and a backplane communication system. Background Art

[0002] With the continuous development of backplane communication technology, the heat dissipation requirements of various devices used for backplane communication are getting higher and higher. Therefore, heat dissipation boxes with air inlets and outlets are widely used in backplane communication equipment to dissipate heat for the communication backplane through the airflow flowing through the heat dissipation boxes. However, due to the limitations of backplane communication technology, large-scale routing switching equipment in communication equipment is often sensitive to the height of the whole machine using the heat dissipation box. While the capacity and power consumption of the whole machine have increased significantly, the increase in the height of the air inlet and outlet is very limited. As a result, how to improve the heat dissipation effect of communication equipment has become a technical problem that needs to be solved urgently in backplane communication technology. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a heat dissipation plug-in box, a heat dissipation cabinet and a backplane communication system, which can effectively improve the heat dissipation effect of communication equipment.

[0004] To solve the above technical problems, an embodiment of the present invention provides a heat dissipation plug-in box, comprising a cabinet body that encloses a receiving space, the cabinet body is provided with an air inlet, two air supply ports located on both sides of the air inlet, and an air outlet, the receiving space comprises an air inlet area facing the air inlet and the two air supply ports, and a heat source area connected to the air inlet area; the air inlet has a first opening direction, the air supply port has a second opening direction, the first opening direction and the second opening direction intersect at the air inlet area; the cabinet body comprises a plurality of baffles that are arranged in the air inlet area and spaced apart from each other, each of the baffles comprises two wind-shielding surfaces facing the two air supply ports respectively, and air flow channels facing the air inlet and connecting the air inlet area to the heat source area are respectively formed between two adjacent baffles and between the inner wall of the cabinet body and the adjacent baffles.

[0005] An embodiment of the present invention further provides a heat dissipation cabinet, which includes two of the above-mentioned heat dissipation plug-in boxes, wherein the cabinet body of one of the two heat dissipation plug-in boxes is stacked on the cabinet body of the other one.

[0006] An embodiment of the present invention further provides a backplane communication system, comprising a backplane, a heating element arranged on the backplane, and the heat dissipation plug-in box or heat dissipation cabinet as described above, wherein the backplane is arranged in the receiving space.

[0007] Compared with the prior art, the embodiment of the present invention is provided with an air inlet for introducing the front airflow and a supplementary air inlet for introducing the side airflow, and a baffle is provided at the intersection of the front airflow and the side airflow (that is, the intersection of the opening directions of the air inlet and the supplementary air inlet - in the air inlet area). Since the baffle has a windshield surface facing the supplementary air inlet, the windshield surface can block part of the airflow of the side airflow from the supplementary air inlet, and guide the part of the airflow to the heat source area through the airflow channel on one side of the baffle. In this way, in the process of the side airflow blowing from the edge of the heat dissipation plug-in box to the central position of the heat dissipation plug-in box, it will be blocked by a plurality of baffles arranged at intervals in turn, and will be diverted to the airflow channels closest to, slightly farther from, and slightly farther from the edge of the heat dissipation plug-in box in turn, so that:

[0008] 1. The side airflow flowing to the heat dissipation box is diverted to the airflow channel at the edge of the heat dissipation box and enters the heat source area, reducing the side airflow reaching the middle of the heat dissipation box, reducing the impact of the side wind on the front wind in the middle of the heat dissipation box, alleviating the squeezing effect of the side wind on the front wind, reducing the generation of eddy currents, and reducing the adverse effects of the low-speed airflow area caused by the eddy currents on the heat dissipation effect;

[0009] 2. The diverted airflow increases the air volume flowing from the edge of the heat sink into the heat source area, improving the uneven heat dissipation phenomenon caused by the airflow concentrated in the middle of the heat sink;

[0010] 3. The air intake at the edge of the heat dissipation box is increased, which alleviates the negative pressure caused by insufficient airflow at the edge of the existing heat dissipation box and alleviates the heat reflux phenomenon caused by negative pressure;

[0011] Thereby, the heat dissipation effect of the communication equipment is effectively improved.

[0012] In addition, in the heat dissipation plug box, the plurality of baffles are parallel to each other. In this way, the airflow channel formed between the baffles is more regular (constant width), ensuring that the air volume at each position of the airflow channel is equal, making the airflow distribution at each position in each airflow channel more uniform.

[0013] In addition, in the heat dissipation plug box, the first opening direction is parallel to the plurality of baffles. In this way, the extending direction of the baffles is consistent with the airflow direction of the air inlet, reducing the wind resistance of the airflow of the air inlet into the airflow channel and maintaining smooth airflow.

[0014] In addition, in the heat dissipation plug box, the second opening direction is perpendicular to the plurality of baffles. This arrangement makes the wind shielding surface of the baffle perpendicular to the air intake direction of the air supply port, which can enhance the blocking and diversion effect of the side air intake.

[0015] In addition, in the heat dissipation plug-in box, each of the air flow channels has the same width in the second opening direction. This arrangement can make the air volume of each air flow channel more uniform.

[0016] In addition, in the heat dissipation plug-in box, the air flow channel located at the center of the air inlet area has a first width in the second opening direction, and the air flow channel located at a non-central position of the air inlet area has a second width in the second opening direction, and the first width is greater than the second width.

[0017] In addition, in the heat dissipation plug box, the windshield areas of the plurality of baffles increase in sequence in the direction away from the air supply port. Because the central position of the air inlet area is far from the air supply port and receives a smaller amount of air from the air supply port, increasing the windshield area there can receive and guide the lateral wind flow in a larger range, thereby compensating for the smaller amount of air in the central position of the air inlet area.

[0018] In addition, in the heat dissipation plug-in box, the plurality of baffles have the same length in the direction of the first opening, and have different heights in a direction perpendicular to the first opening and perpendicular to the second opening.

[0019] In addition, in the heat dissipation plug box, the plurality of baffles are symmetrically arranged on both sides of the air flow channel located at the center of the air inlet area. Such an arrangement can play the same wind blocking and flow guiding role for the airflow of the two air supply ports, ensuring the uniformity of airflow distribution.

[0020] In addition, in the heat dissipation plug box, the heat source area is adjacent to the air inlet area and connected to the air inlet area and the air outlet; the cabinet also includes an opening plate provided at the junction of the air inlet area and the heat source area and having a through hole, and the two ends of the through hole are respectively connected to the heat source area and the air flow channel. With this arrangement, the air volume can be adjusted by controlling the size and opening ratio of the through hole.

[0021] In addition, in the heat dissipation plug box, the size of the perforated plate in the first opening direction and the second opening direction is the same as the air flow channel located at the center of the air inlet area, the perforated plate covers the air flow channel located at the center of the air inlet area, and the two ends of the through hole are respectively connected to the heat source area and the air flow channel located at the center of the air inlet area. With this arrangement, the air volume at the center of the cabinet can be adjusted.

[0022] In addition, in the heat dissipation plug box, the heat source area is adjacent to the air inlet area and connects the air inlet area with the air outlet; the cabinet also includes a first guide rail arranged at the junction of the air inlet area and the heat source area. In this way, the first guide rail can be used to carry the back plate with heat-generating components and provide a slidable insertion method for the back plate.

[0023] In addition, in the heat dissipation plug box, the cabinet also includes a second guide rail arranged in the heat source area and above the first guide rail, and the second guide rail is arranged opposite to the first guide rail. This arrangement facilitates the use of the first and second guide rails to coordinately fix the back plate from the upper and lower sides.

[0024] In addition, in the heat dissipation plug box, the plurality of baffles isolate the plurality of airflow channels from each other, the air inlet is connected to the airflow channel located at the central position of the air inlet area, and the air supply port is connected to at least part of the airflow channel located at a non-central position of the air inlet area. With such a configuration, the plurality of airflow channels are completely isolated, and the squeezing of the airflow of the air supply port on the airflow of the air inlet at the central position of the air inlet area can be completely eliminated.

[0025] In addition, in the heat dissipation cabinet, the structures of the two cabinets are symmetrical in vertical direction.

[0026] In addition, the heat dissipation cabinet further includes an air supply area disposed between the two cabinets and connected to the air inlet areas of the two cabinets, the air supply area includes a plurality of air inlet channels isolated from each other, and the plurality of air inlet channels are connected to at least one of the plurality of air flow channels. This arrangement can further supplement the air volume and improve the heat dissipation effect.

[0027] In addition, the heat dissipation cabinet also includes a heat dissipation area arranged between the two cabinet bodies and adjacent to the air supply area. The heat dissipation area includes an air flow channel, and an air inlet and an air outlet respectively connected to the air flow channel.

[0028] In addition, in the heat dissipation cabinet, the air inlet has the second opening direction.

[0029] In addition, in the heat dissipation cabinet, the air exhaust port and the air outlet port have the same opening direction.

[0030] In addition, in the heat dissipation cabinet, the air flow channel is L-shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0032] Figure 1 is a front view of a heat dissipation plug-in box structure according to a first embodiment of the present invention;

[0033] Figure 2 is a right side view of the heat dissipation plug-in box structure according to the first embodiment of the present invention;

[0034] Figure 3 is a perspective schematic diagram of a baffle structure according to a first embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of airflow guidance of a heat dissipation plug-in box according to a first embodiment of the present invention;

[0036] Figure 5 is a comparison diagram of the air inlet flow field of the existing heat dissipation plug-in box (left) and the air inlet flow field of the heat dissipation plug-in box according to the first embodiment of the present invention (right);

[0037] Figure 6 is a front view of a heat dissipation plug-in box structure according to a second embodiment of the present invention;

[0038] Figure 7 yes Figure 6 Schematic diagram of the perforated plate and guide rail structure of the heat dissipation plug-in box structure shown;

[0039] Figure 8 is a front view of a heat dissipation plug-in box structure according to a third embodiment of the present invention;

[0040] Fig. 9 are a front view and a right view of a heat dissipation plug-in box structure according to a fourth embodiment of the present invention;

[0041] Fig.10 yes Fig. 9 The schematic diagram of the structure of the air supply area and the heat dissipation area of ​​the heat dissipation plug-in box structure shown;

[0042] Fig.11 FIG. 5 is a schematic block diagram of the structure of a backplane communication system according to a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0044] In order to increase the air volume of the heat sink, there are usually two design solutions:

[0045] A. Some heat sink designs develop new backplane connection technology to reduce system wind resistance, rely on panel air intake, and follow strict front and back air ducts. However, this places higher requirements on fan wind pressure and noise. At the same time, the higher the capacity of the single board, the greater the power consumption. On the contrary, the greater the resistance, the less the air volume, which is contradictory in design.

[0046] B. In addition, some subrack designs have openings on both sides of the heat dissipation subrack for air supply, and use side cabinets or air guide frames to form a non-strict front-to-back air duct, which can also meet the application of the computer room environment. Under the existing PCB backplane connection architecture, this complex air duct form will also exist for a long time, but due to the squeezing effect of the side air intake on the front air intake, the following problems will occur:

[0047] 1. The rear part of the side air inlet is prone to form vortices, resulting in a low-speed area;

[0048] 2. The air volume of the inlet air is concentrated in the middle slot, and the air volume of the side slots is relatively low;

[0049] 3. The negative pressure of the side air intake will cause heat backflow inside the cabinet, further deteriorating the heat dissipation of the side slots.

[0050] In order to improve the heat dissipation effect, the first embodiment of the present invention relates to a heat dissipation plug-in box, including a cabinet body that encloses a receiving space, the cabinet body is provided with an air inlet, two air supply ports located on both sides of the air inlet, and an air outlet, the receiving space includes an air inlet area facing the air inlet and the two air supply ports, and a heat source area connected to the air inlet area; the air inlet has a first opening direction, the air supply port has a second opening direction, the first opening direction and the second opening direction intersect at the air inlet area; the cabinet body includes a plurality of baffles arranged in the air inlet area and spaced apart from each other, each of the baffles includes two wind shield surfaces facing the two air supply ports respectively, and air flow channels facing the air inlet and connecting the air inlet area to the heat source area are formed between two adjacent baffles and between the inner wall of the cabinet body and the adjacent baffles.

[0051] This heat dissipation plug box is provided with an air inlet for introducing the front airflow and an air supplementation port for introducing the side airflow, and a baffle is provided at the intersection of the front airflow and the side airflow (that is, the intersection of the opening directions of the air inlet and the air supplementation port - in the air inlet area). Since the baffle has a windshield surface facing the air supplementation port, the windshield surface can block part of the airflow of the side airflow from the air supplementation port, and guide the part of the airflow to the heat source area through the airflow channel on one side of the baffle. In this way, in the process of the side airflow blowing from the edge of the heat dissipation plug box to the central position of the heat dissipation plug box, it will be blocked by a plurality of baffles arranged at intervals in turn, and will be diverted to the airflow channels closest to, slightly farther from, and slightly farther from the edge of the heat dissipation plug box in turn, which has the following effects:

[0052] 1. Since the side airflow flowing to the heat dissipation box is diverted to the airflow channel at the edge of the heat dissipation box and enters the heat source area, the side airflow reaching the middle of the heat dissipation box is reduced, the impact of the side wind on the front wind in the middle of the heat dissipation box is reduced, the squeezing effect of the side wind on the front wind is alleviated, the generation of eddy currents is reduced, and the adverse effect of the low-speed airflow area caused by the eddy currents on the heat dissipation effect is reduced;

[0053] 2. Since the diverted part of the airflow increases the air volume flowing from the edge of the heat sink into the heat source area, the uneven heat dissipation phenomenon caused by the airflow concentrated in the middle of the heat sink is improved;

[0054] 3. Since the air intake at the edge of the heat dissipation box increases, the negative pressure caused by insufficient airflow at the edge of the existing heat dissipation box is alleviated, and the heat reflux phenomenon caused by negative pressure is alleviated; thereby, the heat dissipation effect of the communication equipment is effectively improved.

[0055] The implementation details of the heat dissipation plug-in box of this embodiment are specifically described below. The following content is only provided for easy understanding of the implementation details and is not necessary for implementing this solution.

[0056] See also Figure 1 and Figure 2 The heat dissipation plug box 10 in this embodiment includes a cabinet body 11 , an air inlet 12 , an air supply port 13 , an air outlet 14 , and a baffle 15 located inside the cabinet body 11 .

[0057] The cabinet 11 includes a front panel 111 and a rear panel 112 that are arranged opposite to each other, two side panels 113 that are respectively connected to the front panel 111 and the rear panel 112 and are arranged opposite to each other, a bottom plate 114 located below the front panel 111, the rear panel 112, and the side panels 113, and a top plate 115 that is arranged above the bottom plate 114. The front panel 111, the rear panel 112, the two side panels 113, the bottom plate 114, and the top plate 115 together enclose a receiving space 110. The receiving space 110 is used to receive a communication backplane (not shown) provided with a heating element.

[0058] The air inlet 12 is disposed on the front panel 111 and is used to introduce the front air from the front of the cabinet 11 (the side of the front panel 111) to dissipate the heat of the heating element in the receiving space 110. Figure 2 In the displayed drawing, the up and down directions are the Z-axis directions (upward is the positive direction of the Z-axis), the left and right directions are the Y-axis directions (rightward is the positive direction of the Y-axis), and the direction perpendicular to the drawing is the X-axis direction ( Figure 2 The X-axis is not shown, and the direction perpendicular to the drawing and outward is the positive direction of the X-axis. In the YZ plane, the opening direction of the air inlet 12 is Figure 2 In the present embodiment, the air inlet 12 is arranged adjacent to the bottom plate 114, that is, when the cabinet 11 is placed horizontally (in a vertical direction perpendicular to the horizontal plane, the bottom plate 114 is located below the top plate 115), the air inlet 12 is arranged at the lower part of the front panel 111.

[0059] The two air supply ports 13 are located on both sides of the air inlet 12 and are respectively arranged on two opposite side panels 113, and are used to introduce side air from the side of the cabinet 11 (the side of the side panel 112) to supplement the front air flow, increase the air flow entering the receiving space 110, and improve the heat dissipation effect. Figure 1 In the displayed drawing, the up and down directions are the Z-axis directions (upward is the positive direction of the Z-axis), the left and right directions are the X-axis directions (rightward is the positive direction of the X-axis), and the direction perpendicular to the drawing is the Y-axis direction ( Figure 2 The Y axis is not shown, and the direction perpendicular to the drawing and inward is the positive direction of the Y axis). In the XZ plane, the opening direction of the air supply port 13 is Figure 1 The X-axis direction is shown (hereinafter referred to as the second opening direction). In this way, the first opening direction of the air inlet 12 and the second opening direction of the air supply port 13 intersect at the air inlet area 1101, and the front air introduced through the air inlet 12 and the side air introduced through the air supply port 13 will intersect at the air inlet area 1101. In this embodiment, the two air supply ports 13 are arranged adjacent to the bottom plate 114. It should be noted that in actual use, if it is necessary to ensure that the airflow introduction position of the side air inlet is symmetrical, the two air supply ports 13 can be arranged directly opposite to each other.

[0060] The receiving space 110 includes an air inlet area 1101 facing the air inlet 12 and the two air supply ports 13, and a heat source area 1102 connected to the air inlet area 1101. In this embodiment, the air inlet area 1101 is arranged adjacent to the bottom plate 114, and when the cabinet 11 is placed horizontally, the heat source area 1102 is located above the air inlet area 1101 in a vertical direction perpendicular to the horizontal plane.

[0061] The air outlet 14 is connected to the air inlet 12 and the air supply port 13 via the heat source area 1102 and the air inlet area 1101 in sequence, thereby releasing the hot air flow that enters the receiving space 110 via the air inlet 12 and the air supply port 13 and exchanges heat with the heating element. The air outlet 14 is located at the top of the cabinet, and it can be set on any one of the top plate 115, the two side plates 114, the front panel 111 and the rear panel 112, and the number of air outlets 14 is not limited to one. In this embodiment, the number of air outlets 14 is one, and the air outlet 104 is set on the rear panel 112 and adjacent to the top plate 115, that is, the air outlet is set at the upper part of the cabinet 11.

[0062] There are multiple baffles 15, and the multiple baffles 15 are arranged in the air inlet area 1101 at intervals. Figure 3Each baffle 15 includes two wind shielding surfaces 150 facing two air supply ports 13 respectively, and an air flow channel 151 facing the air inlet 12 is formed between two adjacent baffles 15. An air flow channel 151 facing the air inlet 12 is also formed between the inner wall of the cabinet 11 (not shown in the figure, that is, the side of the side panel 113 facing the receiving space 110) and the adjacent baffle 15, so that the air flow channel 151 connects the air inlet area 1101 to the heat source area 1102.

[0063] Please also see Figure 4 Since the wind shielding surface 150 can block part of the side airflow from the air supply port 13 and guide the part of the airflow to the heat source area 1102 through the airflow channel 150 located on one side of the baffle 15, in this way, the side airflow (along Figure 4 In the process of blowing from the edge of the heat dissipation box 10 to the center of the heat dissipation box 10 (in the positive and reverse directions of the X-axis shown in the figure), it will be blocked by multiple spaced baffles 15 in sequence and diverted to the air flow channels 151 closest to, slightly farther from, and slightly farther from the edge of the heat dissipation box 10 in sequence.

[0064] Since the side airflow flowing to the heat dissipation box 10 is diverted to the airflow channel 150 at the edge of the heat dissipation box 10 and enters the heat source area 1102, the lateral airflow reaching the middle of the heat dissipation box 10 is reduced, the impact of the lateral wind on the front airflow in the middle of the heat dissipation box 10 is reduced, the squeezing effect of the lateral wind on the front wind is alleviated, the generation of eddy currents is reduced, and the adverse effect of the low-speed airflow area caused by the eddy currents on the heat dissipation effect is alleviated; since the diverted part of the airflow increases the air intake amount flowing from the edge of the heat dissipation box 10 into the heat source area 1102, the uneven heat dissipation phenomenon caused by the airflow concentrated in the middle of the heat dissipation box 10 is improved; since the air intake amount at the edge of the heat dissipation box 10 is increased, the negative pressure caused by insufficient airflow at the edge of the heat dissipation box 10 is alleviated, and the heat reflux phenomenon caused by the negative pressure is alleviated; thereby, the heat dissipation effect is effectively improved.

[0065] Figure 5 The figure shows the comparison of the air inlet flow field between the prior art and the present embodiment, wherein the left side shows the air inlet flow field of the existing heat dissipation plug-in box, and the right side shows the air inlet flow field of the heat dissipation plug-in box of the present embodiment. The density of the black dots represents the density of gas molecules / gas flow. The baffle design of the heat dissipation plug-in box of the present embodiment significantly improves the flow field distribution, reduces the generation of eddy currents, and significantly improves the low-speed area at the edge of the plug-in box cabinet. Experimental data show that the heat dissipation capacity of the heat dissipation box provided by the present embodiment can be increased by 30-70%.

[0066] It should be noted that the multiple baffles 15 need to block and divert the side airflow through the wind shielding surface 150, and need to guide the front airflow and the diverted side airflow through the airflow channels 151 formed by mutual spacing. Therefore, it is sufficient to ensure that the wind shielding surfaces 150 (i.e., the plate surfaces) of the multiple baffles 15 face the air supply port 13 and that gaps for airflow to flow through are reserved between the multiple baffles 15. When this premise is met, the structural setting of the baffles 15 can be appropriately adjusted in response to different considerations, such as process requirements, customer needs, etc.

[0067] For example, multiple baffles 15 can be arranged parallel to each other or tilted. In this embodiment, multiple baffles are parallel to each other, so that the airflow channel 151 formed between the baffles 15 is more regular (constant width), ensuring that the air volume at each position of the airflow channel 151 is equivalent, so that the airflow flow distribution at each position in each airflow channel 151 is more uniform. For another example, the multiple baffles 15 can also be parallel to the first opening direction, so that the extension direction of the baffle 15 is consistent with the airflow direction of the air inlet 12, reducing the wind resistance of the airflow of the air inlet 12 flowing into the airflow channel 151, and maintaining smooth airflow. Further, multiple baffles 15 can also be arranged to be perpendicular to the second opening direction, so that the windshield 150 of the baffle 15 is perpendicular to the airflow direction of the air supply port, which can enhance the blocking and diversion effect of the opposite side air intake. In addition, the width of each airflow channel 151 in the second opening direction can be set to be the same, so that the air volume of each airflow channel 151 is more uniform. However, in this embodiment, the width of the airflow channel 151 in the second opening direction is different. Among them, the air flow channel 151 located at the central position of the air inlet area 1101 has a first width in the second opening direction, and the air flow channel 151 located at the non-central position of the air inlet area 1101 has a second width in the second opening direction, and the first width is greater than the second width.

[0068] In addition, for ease of manufacturing, the sizes of multiple baffles 15 (the area size of the windshield surface 150) can be set to be the same. In this way, it is only necessary to batch produce the same baffles 15 and assemble them at different positions in the air inlet area 1101 to achieve the corresponding wind blocking and diversion effects.

[0069] In this embodiment, the areas of the windshield surfaces 150 of the multiple baffles 15 increase in sequence along the direction away from the air supply port 13 (i.e., from the two sides of the cabinet 11 toward the center of the cabinet 11). Because the central position of the air inlet area 1101 is far from the position of the air supply port 13 and the amount of air received from the air supply port is small, increasing the area of ​​the windshield surface 150 there can receive and guide the airflow of the lateral wind in a larger range (in the Z-axis direction), thereby compensating for the small amount of air flow in the central position of the air inlet area 1101. Specifically, in the actual manufacturing process, the lengths of the multiple baffles 15 in the first opening direction can be the same, and the heights in the directions perpendicular to the first opening and perpendicular to the second opening (in the Z-axis direction) can be different, so that the baffles 15 have windshield surfaces 150 of different sizes.

[0070] It is worth mentioning that in order to provide the same wind shielding and flow guiding effect to the airflows of the two air supply ports 13 and ensure the uniformity of airflow distribution, in this embodiment, a plurality of baffles 15 are symmetrically arranged on both sides of the airflow channel 151 located at the center of the air inlet area 1101.

[0071] In addition, in order to facilitate the gas after heat exchange to flow out of the heat dissipation plug box 10, the accommodating space 110 can also include a fan area 1103 for accommodating a fan and adjacent to the air outlet 14. The air inlet side of the fan area 1103 faces the heat source area, and the air inlet side faces the air outlet 14, so that the fan arranged in the fan area 19 can drive the hot air flow in the heat source area to flow out through the air outlet 14.

[0072] The second embodiment of the present invention, see Figure 6 and Figure 7 , another heat dissipation plug box 20 is provided. The heat dissipation plug box 20 of the second embodiment is substantially the same as the heat dissipation plug box 10 of the first embodiment, and also includes a cabinet 11, an air inlet 12 (not shown in the figure) arranged on the cabinet, an air supply port 13, an air outlet 14 (not shown in the figure), and a baffle 15 located in the cabinet 11. The difference is that the heat dissipation plug box 20 of the second embodiment additionally includes the following Figure 7 The perforated plate 16 is shown.

[0073] In this embodiment, the heat source area 1102 is arranged adjacent to the air inlet area 1101, and the perforated plate 16 is arranged at the junction of the air inlet area 1101 and the heat source area 1102. The perforated plate 16 is provided with a through hole 160, and the upper end and the lower end of the through hole 160 are respectively connected to the heat source area 1102 and the air inlet area 1101. The perforated plate 16 is arranged opposite to the air flow channel 151 located at the center of the air inlet area 1101, that is, the size of the perforated plate 16 in the first opening direction and the second opening direction is the same as the air flow channel 151 located at the center of the air inlet area 1101. In this way, the perforated plate 16 covers the air flow channel 151 located at the center of the air inlet area 1101, and the upper and lower ends of the through hole 160 are respectively connected to the heat source area 1102 and the air flow channel 151 located at the center of the air inlet area 1101. In the actual design process, the air volume at the center of the cabinet 11 can be adjusted by controlling the size and opening rate of the through hole 160.

[0074] It can be understood that the perforated plate 16 can also cross the entire horizontal cross-section of the cabinet 11, so as to cover all the air flow channels 151. A group of through holes 160 are provided in the area of ​​the perforated plate 16 facing each air flow channel 151. The through hole size and opening ratio are set for each group of through holes 160 respectively, so that the air volume regulation at various positions at the junction of the source area 1102 and the air inlet area 1101 can be achieved simultaneously.

[0075] In addition, it should be noted that, in the present embodiment, a guide rail 17 may be further provided at the junction of the air inlet area 1101 and the heat source area 1102, so as to carry a back plate having heat generating components and provide a slidable insertion method for the back plate. Correspondingly, the perforated plate 16 may be provided below the guide rail 17 and fixed on the guide rail 17. Preferably, the cabinet 11 also includes a guide rail 18 provided in the heat source area 1102 and located above the guide rail 17, and the guide rails 17 and the guide rails 18 are arranged opposite to each other to coordinately fix the back plate from the upper and lower sides. It is understandable that there may be multiple guide rails 17 and 18, respectively, and they may correspond one to one, so as to fix multiple back plates.

[0076] The third embodiment of the present invention, see Figure 8, another heat dissipation plug box 30 is provided. The heat dissipation plug box 30 of the third embodiment is substantially the same as the heat dissipation plug box 10 of the first embodiment, and also includes a cabinet 11, an air inlet 12 (not shown) arranged on the cabinet, an air supply port 13, an air outlet 14 (not shown), and a baffle 15 located in the cabinet 11. The difference is that the baffle 15 of the third embodiment isolates multiple air flow channels 151 from each other, the air inlet 12 (not shown) is connected to each air flow channel 151, and the air supply port 13 is connected to at least part of the air flow channel 151 located at a non-central position of the air inlet area 1101. In this way, the multiple air flow channels 151 are completely isolated, and the squeezing of the air flow of the air supply port 13 on the air inlet air flow at the central position of the air inlet area 1101 is completely eliminated.

[0077] It is worth mentioning that the heat dissipation plug box 30 in the third embodiment can also be improved from the heat dissipation plug box 20 in the second embodiment. It only needs to configure the baffle 15 on the basis of the structure of the heat dissipation plug box 20 to "isolate multiple air flow channels 151 from each other, the air inlet 12 (not shown) is connected to each air flow channel 151, and the air supply port 13 is connected to at least part of the air flow channel 151 located in the non-central position of the air inlet area 1101".

[0078] The fourth embodiment of the present invention, see Fig. 9 , a heat dissipation cabinet 40 is provided, comprising two heat dissipation plug boxes 10 as described in the first embodiment, wherein the cabinet body 11 of one heat dissipation plug box 10 is stacked on the cabinet body 11 of another heat dissipation plug box 10. Preferably, the two cabinet bodies 11 in this embodiment are placed in opposite directions, so that the structures of the two cabinet bodies 11 are symmetrical from top to bottom. More preferably, the two cabinet bodies 11 are not provided with the bottom plate 114 described in the first embodiment, and the top plates 115 of the two cabinet bodies 11 are far away from each other.

[0079] Since neither of the two cabinets 11 includes a bottom plate 114, the air inlet areas 1101 of the two cabinets 11 are adjacent to each other and are interconnected. In order to further supplement the air volume and improve the heat dissipation effect, in this embodiment, a supplementary air area 41 may be sandwiched between the two cabinets 11 (i.e., the two air inlet areas 1101), and the supplementary air area 41 is respectively connected to the air inlet areas 1101 of the two cabinets 11, and the supplementary air area 41 includes the following: Fig.10 The multiple air inlet channels 410 are shown, and the multiple air inlet channels 410 are respectively connected to at least one of the air flow channels 151 of the multiple cabinets 11.

[0080] In addition, the heat dissipation cabinet 40 may further include a heat dissipation area 42 disposed between the two cabinet bodies 11 and adjacent to the air supply area 41. Fig.10As shown, the heat dissipation area 42 includes an airflow channel 420, and an air inlet 421 and an air outlet 422 respectively connected to the airflow channel 420. In this embodiment, the air inlet 421 can be set to have a second opening direction, the air outlet 422 can be set to have a first opening direction (that is, the same as the opening direction of the air outlet 14), and the airflow channel 420 can be set to be L-shaped accordingly. The heat dissipation area 42 can be used to accommodate the switch's own single board and achieve heat dissipation for the switch's own single board.

[0081] It is worth mentioning that each of the two heat dissipation boxes 10 of the heat dissipation cabinet 40 can be replaced by the heat dissipation box 20 of the second embodiment or the heat dissipation box 30 of the third embodiment, and the various replaced structures will not be described in detail here.

[0082] The fifth embodiment of the present invention, see Fig.11 , provides a backplane communication system 50, including the heat dissipation plug box 10 or the heat dissipation plug box 20 or the heat dissipation plug box 30 or the heat dissipation cabinet 40 of the aforementioned embodiment, which has a receiving space 110, a backplane 51 arranged in the receiving space 110, and a heating element 52 arranged on the backplane 51.

[0083] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A heat dissipation plug box, comprising a cabinet body enclosing a receiving space, the cabinet body being provided with an air inlet, two air supply ports, and an air outlet, characterized in that: The receiving space includes an air inlet area facing the air inlet and the two air supply ports, and a heat source area connected to the air inlet area; the air inlet has a first opening direction for introducing forward air from the front of the cabinet; The air supply port has a second opening direction for introducing side air from the side of the cabinet, and the first opening direction and the second opening direction intersect at the air inlet area; The cabinet body includes a plurality of baffles arranged in the air inlet area and spaced apart from each other, each of the baffles includes two wind shielding surfaces facing the two air supply ports respectively, and air flow channels facing the air inlet and connecting the air inlet area to the heat source area are formed between two adjacent baffles and between the inner wall of the cabinet body and the adjacent baffles.

2. The heat dissipation plug-in box according to claim 1, characterized in that: The plurality of baffles are parallel to each other.

3. The heat dissipation plug-in box according to claim 2, characterized in that: The first opening direction is parallel to the plurality of baffles.

4. The heat dissipation plug-in box according to claim 3, characterized in that: The second opening direction is perpendicular to the plurality of baffles.

5. The heat dissipation plug-in box according to claim 4, characterized in that: The width of each of the air flow channels in the second opening direction is the same.

6. The heat dissipation plug-in box according to claim 4, characterized in that: The airflow channel located at the center of the air inlet area has a first width in the second opening direction, and the airflow channel located at a non-central position of the air inlet area has a second width in the second opening direction, and the first width is greater than the second width.

7. The heat dissipation plug-in box according to claim 3, characterized in that: The wind shielding surface areas of the plurality of baffles increase sequentially in a direction away from the air supply port.

8. The heat dissipation plug-in box according to claim 7, characterized in that: The plurality of baffles have the same length in the direction of the first opening, and have different heights in a direction perpendicular to the first opening and perpendicular to the second opening.

9. The heat dissipation plug-in box according to claim 3, characterized in that: The plurality of baffles are symmetrically arranged on both sides of the air flow channel located at the center of the air inlet area.

10. The heat dissipation plug-in box according to claim 1, characterized in that: The heat source area is adjacent to the air inlet area and connects the air inlet area and the air outlet; The cabinet body also includes an opening plate which is arranged at the junction of the air inlet area and the heat source area and has a through hole, and two ends of the through hole are respectively connected to the heat source area and the air flow channel.

11. The heat dissipation plug-in box according to claim 10, characterized in that: The dimensions of the perforated plate in the first opening direction and the second opening direction are the same as those of the air flow channel located at the center of the air inlet area. The perforated plate covers the air flow channel located at the center of the air inlet area. The two ends of the through hole are respectively connected to the heat source area and the air flow channel located at the center of the air inlet area.

12. The heat dissipation plug-in box according to claim 1, characterized in that: The heat source area is adjacent to the air inlet area and connects the air inlet area with the air outlet; the cabinet also includes a first guide rail arranged at the junction of the air inlet area and the heat source area.

13. The heat dissipation plug-in box according to claim 12, characterized in that: The cabinet further includes a second guide rail disposed in the heat source area and located above the first guide rail, wherein the second guide rail is disposed opposite to the first guide rail.

14. The heat dissipation plug-in box according to claim 1, characterized in that: The multiple baffles isolate the multiple air flow channels from each other, the air inlet is connected to each of the air flow channels, and the air supply port is connected to at least part of the air flow channels located at a non-central position of the air inlet area.

15. A heat dissipation cabinet, characterized in that: It comprises two heat dissipation plug-in boxes according to any one of claims 1 to 14, wherein the cabinet body of one of the two heat dissipation plug-in boxes is stacked on the cabinet body of the other one.

16. The heat dissipation cabinet according to claim 15, characterized in that: The structures of the two cabinets are symmetrical up and down.

17. The heat dissipation cabinet according to claim 15, characterized in that: It also includes an air supply area arranged between the two cabinets and respectively connected to the air inlet areas of the two cabinets. The air supply area includes a plurality of air inlet channels, and the plurality of air inlet channels are respectively connected to at least one of the plurality of air flow channels.

18. The heat dissipation cabinet according to claim 17, characterized in that: It also includes a heat dissipation area arranged between the two cabinets and adjacent to the air supply area. The heat dissipation area includes an air flow channel, and an air inlet and an air outlet respectively connected to the air flow channel.

19. The heat dissipation cabinet according to claim 18, characterized in that: The air inlet has the second opening direction.

20. The heat dissipation cabinet according to claim 18, characterized in that: The air exhaust port and the air outlet port have the same opening direction.

21. The heat dissipation cabinet according to claim 18, characterized in that: The air flow channel is L-shaped.

22. A backplane communication system, comprising a backplane, a heating element arranged on the backplane, and a heat dissipation plug-in box as described in any one of claims 1 to 14, or a heat dissipation cabinet as described in any one of claims 15 to 21, wherein the backplane is arranged in the receiving space.

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