Double-stage flow-guiding low-noise energy-saving outdoor communication cabinet

Abstract

A kind of two-stage flow guiding low-noise energy-saving outdoor communication cabinet, including cabinet and cabinet cap, the top surface of cabinet is provided with air outlet;Cabinet cap is arranged on cabinet, and the inner surface of cabinet cap and the top surface of cabinet form heat dissipation space, the inner surface of cabinet cap is provided with the first flow guiding cone of the radial wind of the axial wind being guided into four directions by cabinet cap opposite air outlet, the outer edge of cabinet cap is provided with the second inclined plane of the radial wind being guided into downward axial wind, and the heat dissipation hole is arranged below the second inclined plane of cabinet cap, the air inlet side of heat dissipation hole is communicated with heat dissipation space, and the air outlet side of heat dissipation hole is communicated with external atmosphere space.The utility model discloses through the first flow guiding cone, axial wind is converted into uniform radial wind, radial wind is guided to downward axial wind again by the second inclined plane, and finally is discharged from heat dissipation hole, so that the airflow flow direction in cabinet cap is stable, reduces hot air flow discharge resistance, reduces the performance requirement to fan, and fan can maintain target air volume without high rotation speed, indirectly saves electric energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation technology for communication equipment, specifically relating to a dual-stage airflow-guiding, low-noise, energy-saving outdoor communication chassis. Background Technology

[0002] With the advancement of key national projects such as Safe City, Skynet Project, and Smart Transportation, the number of outdoor communication equipment, including base stations, video surveillance, and edge computing devices, has increased dramatically, leading to a rapid rise in their power consumption and heat generation. Existing outdoor enclosures often enhance heat dissipation by increasing the number of fans or raising their speed, but this frequently results in the following problems:

[0003] 1. Severe noise pollution: Large-sized or high-speed fans can generate noise levels as high as 60–70 dB, affecting the surrounding environment and equipment stability;

[0004] 2. High energy consumption: The continuous operation of high-power fans increases annual energy consumption by an additional 10-20%;

[0005] 3. Poor heat dissipation channels: The air duct layout is simple. A single axial or radial channel cannot effectively convert the axial airflow of the fan into the lateral airflow inside the cabinet, resulting in the accumulation of hot air; it is easy to generate local eddies, forming reverse airflow and vortices near the fan exhaust port, increasing system impedance, and requiring the fan to run at a higher speed to output the same air volume;

[0006] Reducing the static pressure utilization rate of the fan makes it difficult to balance airflow and air pressure.

[0007] 4. Sealing and backflow issues: If the enclosure and the cap do not fit tightly, hot air can easily flow back to the air inlet, causing secondary heating and further reducing heat dissipation efficiency.

[0008] The aforementioned shortcomings have limited further improvements in outdoor communication enclosures in terms of noise, energy consumption, and long-term reliability, necessitating the development of new airflow guidance structures to optimize airflow paths. Summary of the Invention

[0009] To overcome the shortcomings of existing technologies, this utility model proposes a dual-stage flow-guiding low-noise energy-saving outdoor communication chassis, which significantly improves heat dissipation, greatly reduces noise, significantly reduces energy consumption, and enhances reliability and stability.

[0010] The technical solution adopted in this utility model is:

[0011] A dual-stage airflow-guided, low-noise, energy-saving outdoor communication enclosure includes a enclosure body and a cap. An air outlet is provided on the top surface of the enclosure body. The cap covers the enclosure body, forming a heat dissipation space between its inner surface and the top surface of the enclosure body. A first guide cone is installed on the inner surface of the cap, directly opposite the air outlet, to guide axial airflow into radial airflow that disperses outwards. A second inclined surface is provided on the outer edge of the cap to guide radial airflow into downward axial airflow. A heat dissipation hole is provided below the second inclined surface on the cap. The air inlet side of the heat dissipation hole communicates with the heat dissipation space, and the air outlet side of the heat dissipation hole communicates with the external atmosphere. This invention uses the first guide cone to convert axial airflow into uniform radial airflow, which is then guided downwards by the second inclined surface and finally discharged from the heat dissipation hole, thus forming a "two-stage guiding + diffusion" airflow path. This stabilizes the airflow direction within the cap, reduces resistance to hot airflow discharge, lowers the performance requirements of the fan, and allows the fan to maintain the target airflow without high speed, indirectly saving energy consumption.

[0012] Furthermore, the top surface of the housing is provided with a boss, the air outlet is provided on the boss, and the housing cap is provided on the boss.

[0013] Furthermore, the inner surface of the cap is provided with an annular edge plate along the radial direction. The outer periphery of the annular edge plate is connected to the outer end face of the second inclined surface and forms an airflow channel with the inner surface. The airflow channel is connected to the heat dissipation space. The heat dissipation holes are axially arranged and evenly distributed on the annular edge plate.

[0014] Furthermore, a concave flange is formed axially on the inner side of the annular edge plate, and the concave flange and the boss are fitted together with a clearance, so that the cap is placed on the box body. This utility model separates the air outlet side of the heat dissipation hole from the internal heat dissipation space by the cooperation of the boss and the concave flange, thus preventing the backflow of the dissipated hot air.

[0015] Furthermore, at least one pair of limiting plates extending radially inward are provided on the concave edge, and the limiting plates can be fastened to the boss.

[0016] Furthermore, the distance from the limiting plate to the lower end face of the annular edge plate is less than the height of the boss, thereby forming an air outlet channel between the air outlet side of the heat dissipation hole and the housing.

[0017] Furthermore, the first guide cone is welded to the inner surface of the cap, and it is conical with a taper of 40-50°.

[0018] Furthermore, the angle of the second inclined plane is consistent with the taper of the first guide cone.

[0019] Furthermore, a fan is installed inside the air outlet, and a rubber gasket is installed between the fan and the boss. The rubber gasket completely seals the boss and the cavity inside the box cap, preventing hot air inside the box cap from flowing back into the box body, forming a local circulation, and improving the static pressure utilization rate of the fan.

[0020] Furthermore, an air inlet is provided at the bottom of the enclosure.

[0021] The beneficial effects of this utility model are:

[0022] 1. Significantly improved heat dissipation efficiency: The dual-stage airflow structure increases the effective airflow utilization rate of the fan by about 30%, and reduces the overall temperature rise inside the chassis by more than 10°C, significantly improving heat dissipation performance under high load conditions.

[0023] 2. Noise is significantly reduced. The fan speed can be reduced by 20% to 30%, which corresponds to a noise reduction of more than 10dB, significantly reducing noise pollution in the surrounding environment.

[0024] 3. Energy consumption is significantly reduced. Under the same heat dissipation requirements, the fan power consumption is reduced by an average of 15% to 25%, which can save about 100kWh of electricity per unit per year and reduce operating costs.

[0025] 4. Enhanced reliability and stability: The dual-stage flow guidance and sealed return design effectively eliminates local eddies and heat backflow, improves the static pressure utilization rate of the fan, and ensures temperature stability and equipment reliability during long-term continuous operation.

[0026] 5. Wide applicability: This utility model is compatible with common outdoor communication chassis platform designs and can be promoted to base stations, video surveillance, edge computing and other communication equipment that require outdoor heat dissipation, and has good industrialization prospects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0029] Figure 3 This is a structural schematic diagram of the box body of this utility model.

[0030] Figure 4 This is a structural schematic diagram of the box cap of this utility model.

[0031] In the diagram: 1. Housing, 101. Boss, 102. Housing cap mounting hole, 103. Air outlet, 104. Fan mounting hole, 2. Rubber gasket, 3. Fan, 4. First guide cone, 5. Housing cap, 501. Annular edge plate, 502. Recessed edge, 503. Limiting plate, 504. Threaded hole, 505. Heat dissipation hole, 506. Second inclined surface. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements and equivalents that may be included within the scope of the claims.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] See Figure 1-4This embodiment provides a dual-stage airflow-guided low-noise energy-saving outdoor communication chassis, including a chassis 1 and a cover 5. The top surface of the chassis 1 is provided with an air outlet 103, and the bottom of the chassis 1 is provided with an air inlet. The cover 5 is placed on the chassis 1, and a heat dissipation space is formed between its inner surface and the top surface of the chassis 1. A first airflow guide cone 4 is installed on the inner surface of the cover 5, which guides the axial airflow into radial airflow that disperses in all directions, at the position opposite to the air outlet 103. A second inclined surface 506 is provided on the outer edge of the cover 5, which guides the radial airflow into downward axial airflow. A heat dissipation hole 505 is provided below the second inclined surface 506 on the cover 5. The air inlet side of the heat dissipation hole 505 is connected to the heat dissipation space, and the air outlet side of the heat dissipation hole 505 is connected to the external atmospheric space. This invention converts axial airflow into uniform radial airflow through the first guide cone 4. The radial airflow is then guided into downward axial airflow through the second inclined surface 506 and finally discharged from the heat dissipation hole 505, thus forming a "two-stage guidance + diffusion" airflow path. This stabilizes the airflow direction inside the housing 5, reduces the resistance to hot airflow discharge, lowers the performance requirements of the fan, and allows the fan to maintain the target airflow without high speed, indirectly saving energy consumption.

[0037] Specifically, in this embodiment, the top surface of the housing 1 is provided with a boss 101, which is welded to the housing to form a whole. The air outlet 103 is provided on the boss 101, and the housing cap 5 is placed on the boss 101. A fan 3 is installed inside the air outlet 103. Specifically, four fan mounting holes 104 are provided on the boss 101, and the fan 3 is fixed to the inside of the boss 101 through the fan mounting holes 104. A rubber gasket 2 is installed between the fan 3 and the boss 101. The rubber gasket 2 completely seals the cavity between the boss 101 and the housing cap 5, preventing hot air inside the housing cap 5 from flowing back into the housing 1, forming a local circulation, and improving the static pressure utilization rate of the fan.

[0038] In this embodiment, the inner surface of the cap 5 is radially provided with an annular edge plate 501. The outer periphery of the annular edge plate 501 is connected to the outer end face of the second inclined surface 506, forming an airflow channel with the inner surface. The airflow channel communicates with the heat dissipation space. The heat dissipation holes 505 are axially arranged and evenly distributed on the annular edge plate 501. The inner side of the annular edge plate 501 forms an axially recessed flange 502. The recessed flange 502 is clearance-fitted with the boss 101, so that the cap 5 covers the box body 1. This utility model separates the air outlet side of the heat dissipation hole 505 from the internal heat dissipation space by the cooperation of the boss 101 and the recessed flange 502, preventing the backflow of the dissipated hot air. At least one pair of radially extending limiting plates 503 are provided on the recessed flange 502, and the limiting plates 503 can be fastened to the boss 101. Specifically, each limiting plate 503 has two threaded holes 504, and the boss 101 has corresponding cap mounting holes 102. After the limiting plate 503 and the boss 101 are aligned with the mounting holes 102 through the threaded holes 504, they are tightened with screws. The distance from the limiting plate 503 to the lower end face of the annular edge plate 501 is less than the height of the boss 101, thereby forming an air outlet channel between the air outlet side of the heat dissipation hole 505 and the housing 1.

[0039] In this embodiment, the first guide cone 4 is welded to the inner surface of the housing 5. It is conical with a taper of 40-50°. The axial airflow from the fan is transformed into radial airflow that disperses in all directions by the first guide cone 4, completing the first guiding step. The characteristics of the first guide cone 4 ensure smooth airflow at the fan outlet, preventing the formation of localized vortices. The angle of the second inclined surface 506 is consistent with the taper of the first guide cone 4. The radial airflow from the first guide cone 4 is transformed into downward axial airflow by the second inclined surface 506, completing the second guiding step. The airflow is then discharged outside the housing through the strip-shaped heat dissipation holes on the inner edge plate of the housing 5. This secondary reversal stabilizes the airflow direction within the housing 5, reducing resistance to hot airflow discharge and lowering the performance requirements of the fan. The fan does not need to operate at high speeds to maintain the target airflow, indirectly saving energy consumption.

[0040] This invention constructs a two-stage airflow guiding structure. A first guide cone 4 is provided at the outlet of the fan 3 to convert the axial wind into a uniform radial wind. A second inclined surface 506 is provided on the outer edge of the housing 5 to guide the radial wind back into a downward axial wind, thereby forming a "two-stage guiding + diffusion" airflow path. Local eddies are eliminated by sealing the joint surface of the housing 1 and the housing 5 with reasonable gaps and sealing rubber gaskets, avoiding the backflow of hot air and the generation of eddies, and improving the static pressure utilization rate of the fan.

[0041] This invention significantly improves heat dissipation efficiency. The dual-stage airflow structure increases the effective airflow utilization rate of the fan by approximately 30%, and reduces the overall internal temperature rise of the chassis by more than 10°C, significantly improving heat dissipation performance under high load conditions. Noise is greatly reduced; fan speed can be reduced by 20%–30%, corresponding to a noise reduction of more than 10dB, significantly mitigating ambient noise pollution. Energy consumption is significantly reduced; under the same heat dissipation requirements, fan power consumption is reduced by an average of 15%–25%, saving approximately 100kWh of electricity per unit annually and reducing operating costs. Reliability and stability are enhanced; the dual-stage airflow and sealed recirculation design effectively eliminates local eddies and heat recirculation, improves fan static pressure utilization, and ensures temperature stability and equipment reliability during long-term continuous operation. It has wide applicability; this invention is compatible with common outdoor communication chassis platform designs and can be applied to base stations, video surveillance, edge computing, and other communication equipment requiring outdoor heat dissipation, showing promising industrialization prospects.

Claims

1. A dual-stage airflow-guiding, low-noise, energy-saving outdoor communication enclosure, comprising an enclosure body and an enclosure cap, wherein an air outlet is provided on the top surface of the enclosure body; the enclosure cap is disposed on the enclosure body, and a heat dissipation space is formed between its inner surface and the top surface of the enclosure body, characterized in that: The inner surface of the cap is equipped with a first guide cone that directs axial airflow into radial airflow that radiates outwards. The outer edge of the cap is provided with a second inclined surface that directs radial airflow into downward axial airflow. The cap is provided with a heat dissipation hole below the second inclined surface. The air inlet side of the heat dissipation hole is connected to the heat dissipation space, and the air outlet side of the heat dissipation hole is connected to the external atmospheric space.

2. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 1, characterized in that: The top surface of the housing is provided with a boss, the air outlet is provided on the boss, and the housing cap is provided on the boss.

3. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 2, characterized in that: The inner surface of the cap is provided with an annular edge plate in the radial direction. The outer periphery of the annular edge plate is connected to the outer end face of the second inclined surface and forms an airflow channel with the inner surface. The airflow channel is connected to the heat dissipation space. The heat dissipation holes are axially arranged and evenly distributed on the annular edge plate.

4. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 3, characterized in that: The inner side of the annular edge plate forms a concave flange along the axial direction, and the concave flange and the boss are fitted with a clearance fit so that the box cap is placed on the box body.

5. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 4, characterized in that: At least one pair of limiting plates extending radially inward are provided on the concave edge, and the limiting plates can be fastened to the boss.

6. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 5, characterized in that: The distance from the limiting plate to the lower end face of the annular edge plate is less than the height of the boss, thereby forming an air outlet channel between the air outlet side of the heat dissipation hole and the box body.

7. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 1, characterized in that: The first guide cone is welded to the inner surface of the cap. It is conical in shape with a taper of 40-50°.

8. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 7, characterized in that: The angle of the second inclined plane is consistent with the taper of the first guide cone.

9. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 1, characterized in that: A fan is installed inside the air outlet, and a rubber gasket is installed between the fan and the boss.

10. The dual-stage flow-guiding, low-noise, energy-saving outdoor communication chassis according to claim 1, characterized in that: The bottom of the enclosure is provided with an air inlet.

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