Cabinet passive heat dissipation structure

Abstract

The invention discloses a cabinet passive heat dissipation structure, which comprises a cabinet, the cabinet is provided with a top cover, the top cover is provided with a heat dissipation channel, the cabinet is hinged with a cabinet door, the cabinet door is provided with a plurality of air inlets, the cabinet door is provided with an assembly frame at the inner sides of the air inlets, a filter assembly is arranged in the assembly frame, the filter assembly is connected with a mounting plate, and the mounting plate is provided with a plurality of through grooves. A driving assembly is mounted in the mounting plate, and the power output end of the driving assembly is connected with a grid plate. According to the change of the environment temperature, the driving assembly drives the grid plate to work and controls the opening and closing of the air inlet of the cabinet, so that the outward opening time of the cabinet is limited, the opening amplitude is limited, the invasion of water vapor, salt mist and dust is controlled to the maximum extent under the condition that the working temperature of equipment is effectively guaranteed, and the air outlet principle is the chimney principle; air flows to form negative pressure, and hot air in the cabinet is extracted by using the negative pressure to be discharged from the heat dissipation channel, so that the outdoor cabinet achieves heat dissipation without a fan, a power supply and noise.

Description

Technical Field

[0001] The invention belongs to the technical field of cabinet heat dissipation, and in particular relates to a cabinet passive heat dissipation structure. Background Art

[0002] An outdoor cabinet is a cabinet that is directly under the influence of natural climate, made of metal or non-metallic materials, and does not allow unauthorized operators to enter and operate. It provides an outdoor physical working environment and safety system equipment for wireless communication sites or wired network site workstations. It is suitable for outdoor environments, such as cabinets installed on the side of roads, parks, rooftops, mountainous areas, and flat ground. Base station equipment, power equipment, batteries, temperature control equipment, transmission equipment, and other supporting equipment can be installed in the cabinet, or installation space and heat exchange capacity can be reserved for the above equipment. It can provide reliable mechanical and environmental protection for the normal operation of internal equipment. However, existing cabinets are often in direct sunlight and high temperature environments. In addition, the internal power supply will cause a certain amount of heat to be generated inside the cabinet. Too much heat accumulation will cause safety hazards to the cabinet, easily lead to safety accidents, and cause unnecessary losses. In order to solve the heat dissipation problem, the existing heat dissipation methods of outdoor cabinets include natural heat dissipation and forced heat dissipation. Natural heat dissipation is suitable for low-power products, generally a closed shell of die-casting. Forced heat dissipation methods include direct ventilation using a fan, which has high heat dissipation efficiency. However, environmental pollutants, water vapor, salt spray, etc. also enter the cabinet without hindrance, causing equipment corrosion and thus failure. The use of air conditioning can achieve an internal temperature lower than the external temperature and keep the cabinet closed. However, the above-mentioned forced heat dissipation requires a large amount of electricity, resulting in energy waste. Therefore, a cabinet passive heat dissipation structure is urgently needed to solve the above problems. Summary of the invention

[0003] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a passive heat dissipation structure of a cabinet.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A passive heat dissipation structure of a cabinet comprises a cabinet, a top cover is installed on the top of the cabinet, a heat dissipation channel is arranged in the top cover, a cabinet door is hingedly installed on one side of the cabinet, a plurality of air inlets are arranged on the lower side of the cabinet door, an assembly frame is installed on the inner side of the air inlet of the cabinet door, a filter component is installed in the assembly frame, the filter component is connected to a mounting plate, a plurality of through slots are arranged on the mounting plate, a drive component is installed in the mounting plate, and a grid plate is connected to the power output end of the drive component.

[0006] It is further defined that a plurality of the air inlets are evenly arranged on the cabinet door, and the cabinet door is provided with a waterproof cover on the outer side of the air inlet. Such a structural design can prevent external rainwater from flowing into the air inlet.

[0007] It is further defined that the filter assembly includes a filter installation frame, and waterproof breathable cotton, smoke filter cotton and dust filter net are installed in the filter installation frame, and the waterproof breathable cotton, smoke filter cotton and dust filter net are installed in the filter installation frame from outside to inside. Such a structural design improves the filtering effect of the air.

[0008] It is further defined that the four corners of the mounting plate are mounted on the filter mounting frame by screw locking. Such a structural design is convenient for fixed installation.

[0009] It is further defined that the driving assembly includes a fixing seat locked and mounted on the mounting plate, the fixing seat is arranged in an L-shaped structure, a notch groove is arranged on one side of the fixing seat, a limit mounting seat is installed in the notch groove, the limit mounting seat is connected to a spring, a connector is connected to the free end of the spring, and a heat-expandable material is arranged between the limit mounting seat and the connector. Such a structural design can realize passive drive.

[0010] It is further defined that the position limiting mounting seat and the connector are both made of brass. Such a structural design improves heat conduction efficiency.

[0011] It is further defined that the connecting head is connected with a locking bolt, and the connecting head is locked and installed on the grid plate by the locking bolt. Such a structural design is convenient for fixed connection and installation.

[0012] It is further defined that the grid plate is provided with guide grooves on both sides, and guide posts are provided in the guide grooves, and the guide posts are fixedly mounted on the mounting plate. Such a structural design enables the grid plate to have a stable guiding movement effect.

[0013] It is further defined that the upper and lower sides of the back of the cabinet are also equipped with fixed connection devices, and the cabinet is installed on the external pole through the fixed connection device. The external pole is also equipped with a heat pipe, and the input end of the heat pipe is connected to the output end of the heat dissipation channel. Such a structural design uses the existing pole as a chimney to achieve the heat dissipation function, and can also prevent rainwater from entering when dissipating heat.

[0014] The beneficial effects of the present invention are as follows: the present invention enables the driving component to drive the grid plate to work according to the change of ambient temperature, and controls the opening and closing of the air inlet of the cabinet. In this way, the cabinet is open to the outside for a limited time and a limited opening range, effectively ensuring that the intrusion of water vapor, salt spray and dust is controlled to the maximum extent under the working temperature of the equipment. The air outlet principle is the chimney principle. The flow of air forms a negative pressure, and the negative pressure is used to draw the hot air in the cabinet and discharge it from the heat dissipation channel, so that the outdoor cabinet can achieve fan-free, power-free and noise-free heat dissipation, realize passive drive, zero carbon emissions, and ultra-long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0016] Figure 1 This is a schematic structural diagram of a cabinet passive heat dissipation structure according to an embodiment of the present invention;

[0017] Figure 2 A schematic cross-sectional structure diagram of a passive heat dissipation structure of a cabinet according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the exploded structure of a filter assembly of a cabinet passive heat dissipation structure according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the exploded structure of a drive component of a cabinet passive heat dissipation structure according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of a mounting pole structure of a cabinet passive heat dissipation structure according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of a mounting pole of a cabinet passive heat dissipation structure according to an embodiment of the present invention;

[0022] The main component symbols are described as follows:

[0023] Cabinet 1, top cover 2, heat dissipation channel 3, cabinet door 4, air inlet 5, assembly frame 6, filter assembly 7, mounting plate 8, through slot 9, drive assembly 10, grid plate 12, waterproof cover 13, filter installation frame 14, waterproof and breathable cotton 15, smoke filter cotton 16, dust filter 17, fixing seat 18, notch groove 19, limit mounting seat 20, spring 21, connector 22, thermal expansion material 23, locking bolt 24, guide groove 25, guide column 26, fixed connection device 27, external holding rod 28, heat pipe 29. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Embodiment 1, as Figure 1 , Figure 2 and Figure 3As shown, a passive heat dissipation structure of a cabinet is shown, a top cover 2 is installed on the top of the cabinet 1, a heat dissipation channel 3 is provided in the top cover 2, a cabinet door 4 is hingedly installed on one side of the cabinet 1, a plurality of air inlets 5 are provided on the lower side of the cabinet door 4, an assembly frame 6 is installed on the inner side of the air inlet 5 of the cabinet door 4, a filter component 7 is installed in the assembly frame 6, the filter component 7 is connected to a mounting plate 8, a plurality of through slots 9 are provided on the mounting plate 8, a drive component 10 is installed in the mounting plate 8, and a grid plate 12 is connected to the power output end of the drive component 10.

[0026] In this embodiment, by installing a component rack in the cabinet 1, installing electronic components on the component rack and powering on the component rack for use, the cabinet 1 will generate heat. When the heat is accumulated, the driving component 10 will drive the grid plate 12 according to the change in ambient temperature, so that the grid plate 12 moves on the mounting plate 8 until the grid on the grid plate 12 is aligned with the through groove 9 on the mounting plate 8. Then, the interior of the cabinet 1 is connected with the air inlet 5 to form convection, so that the external air passes through the air inlet 5 and passes through the filter component 7, the through groove 9 and the grid plate 12 in sequence to enter the cabinet 1. After the external air enters the cabinet 1, it takes away the heat in the cabinet 1 and is discharged from the heat dissipation channel 3. By utilizing the chimney principle, the air flow forms a negative pressure and extracts the hot air in the cabinet 1. When the internal temperature drops, the driving component 10 will drive the grid plate 12 to reset and close the air inlet 5, so that the cabinet 1 is open to the outside for a limited time and a limited opening range, effectively ensuring that the intrusion of environmental pollutants and water vapor is controlled to the maximum extent under the working temperature of the equipment.

[0027] Embodiment 2, as Figure 2 As shown, this embodiment adds the following structure on the basis of the embodiment 1: a plurality of air inlets 5 are evenly arranged on the cabinet door 4 , and a waterproof cover 13 is installed on the outer side of the air inlet 5 of the cabinet door 4 .

[0028] In this embodiment, when in use, a waterproof cover 13 is provided on the outer side of the air inlet 5 so that the waterproof cover 13 can prevent external rainwater from entering the air inlet 5 and prevent the cabinet 1 from being invaded by rainwater.

[0029] Embodiment 3, as Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1, the filter assembly 7 includes a filter installation frame 14, and the filter installation frame 14 is installed with waterproof and breathable cotton 15, smoke filter cotton 16 and dust filter net 17. The waterproof and breathable cotton 15, smoke filter cotton 16 and dust filter net 17 are installed in the filter installation frame 14 from the outside to the inside.

[0030] In this embodiment, when in use, external air needs to pass through the waterproof and breathable cotton 15, the smoke filter cotton 16 and the dust filter 17 in sequence before entering the cabinet 1. When the external air passes through the waterproof and breathable cotton 15, the smoke filter cotton 16 and the dust filter 17, the waterproof and breathable cotton 15, the smoke filter cotton 16 and the dust filter 17 can filter the water vapor, salt mist and dust in the air to prevent them from entering the cabinet 1.

[0031] Embodiment 4, as Figure 3 As shown, this embodiment adds the following structure on the basis of Embodiment 1 and Embodiment 3, and the four corners of the mounting plate 8 are fastened and mounted on the filter mounting frame 14 by screws.

[0032] In this embodiment, during installation, the mounting plate 8 is mounted on the filter mounting frame 14 by screwing the four corners, so that the mounting connection is fixed and convenient for later disassembly, maintenance and use.

[0033] Embodiment 5, as Figure 4 As shown, this embodiment adds the following structure on the basis of embodiment 1, the driving assembly 10 includes a fixing seat 18 locked and mounted on the mounting plate 8, the fixing seat 18 is arranged in an L-shaped structure, a notch groove 19 is provided on one side of the fixing seat 18, a limit mounting seat 20 is installed in the notch groove 19, the limit mounting seat 20 is connected to a spring 21, the free end of the spring 21 is connected to a connector 22, and a heat-expandable material 23 is provided between the limit mounting seat 20 and the connector 22.

[0034] In this embodiment, when in use, the driving component 10 adopts the principle of thermal expansion and contraction. The heat-expanding material 23 expands after being heated, thereby pushing the connecting head 22. When the connecting head 22 pushes the grid plate 12, it will also drive the spring 21 to stretch. After the internal temperature drops due to heat dissipation, the heat-expanding material 23 contracts. At the same time, the spring 21 pulls the connecting head 22, and the connecting head 22 drives the grid plate 12 to reset, thereby achieving the effect of passive drive heat dissipation.

[0035] Embodiment 6, as Figure 4 As shown, this embodiment adds the following structure on the basis of embodiment 5: the position limiting mounting seat 20 and the connector 22 are both made of brass. Such a structural design improves the heat conduction efficiency.

[0036] In this embodiment, when in use, the limit mounting seat 20 and the connector 22 made of brass material can improve the heat conduction efficiency, so that the heat-expandable material 23 can work stably.

[0037] Embodiment 7, as Figure 4As shown, this embodiment adds the following structure on the basis of Embodiment 5: the connecting head 22 is connected with a locking bolt 24 , and the connecting head 22 is locked and installed on the grid plate 12 by the locking bolt 24 .

[0038] In this embodiment, during installation, the connecting head 22 is locked and installed on the grid plate 12 by means of locking bolts 24, so that the connection is convenient and fixed, and subsequent disassembly and maintenance are convenient.

[0039] Embodiment 8, as Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1: guide grooves 25 are provided on the upper and lower sides of the grid plate 12, guide columns 26 are provided in the guide grooves 25, and the guide columns 26 are fixedly mounted on the mounting plate 8.

[0040] In this embodiment, when the connecting head 22 pushes the grid plate 12 to move, the guide groove 25 on the grid plate 12 will guide along the guide column 26, so that the grid plate 12 can move stably.

[0041] Embodiment 9, as Figure 5 and Figure 6 As shown, this embodiment adds the following structure on the basis of embodiment 1: fixed connection devices 27 are further installed on the upper and lower sides of the back of the cabinet 1, and the cabinet 1 is installed on the external holding pole 28 through the fixed connection device 27. A heat pipe 29 is also installed on the external holding pole 28, and the input end of the heat pipe 29 is connected to the output end of the heat dissipation channel 3. Such a structural design uses the existing pole as a chimney to achieve the heat dissipation function, and can also prevent rainwater from entering during heat dissipation.

[0042] In this embodiment, when installing the cabinet 1, a fixed connection device 27 can be installed on the cabinet 1, so that the cabinet 1 is installed on the external holding rod 28 through the fixed connection device 27. The external holding rod 28 is used as a chimney to allow the heat discharged from the heat dissipation channel 3 to be transported to the external holding rod 28 through the heat pipe 29 and discharged from the external holding rod 28. At the same time, the heat is dissipated through the external holding rod 28, and rainwater can be prevented from entering from the top of the cabinet 1, thereby protecting the electronic components in the cabinet 1.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A cabinet passive heat dissipation structure, characterized in that: The invention comprises a cabinet (1), wherein a top cover (2) is installed on the top of the cabinet (1), a heat dissipation channel (3) is arranged in the top cover (2), a cabinet door (4) is hingedly installed on one side of the cabinet (1), a plurality of air inlets (5) are arranged on the lower side of the cabinet door (4), an assembly frame (6) is installed on the inner side of the air inlet (5) of the cabinet door (4), a filter assembly (7) is installed in the assembly frame (6), the filter assembly (7) is connected to a mounting plate (8), a plurality of through slots (9) are arranged on the mounting plate (8), a drive assembly (10) is installed in the mounting plate (8), and a grid plate (12) is connected to the power output end of the drive assembly (10).

2. The passive heat dissipation structure of a cabinet according to claim 1, characterized in that: A plurality of the air inlets (5) are evenly arranged on the cabinet door (4), and a waterproof cover (13) is installed on the cabinet door (4) on the outer side of the air inlets (5).

3. The passive heat dissipation structure of a cabinet according to claim 2, characterized in that: The filter assembly (7) comprises a filter installation frame (14), in which waterproof and breathable cotton (15), smoke filter cotton (16) and a dust filter net (17) are installed, and the waterproof and breathable cotton (15), smoke filter cotton (16) and dust filter net (17) are installed in the filter installation frame (14) in sequence from the outside to the inside.

4. The passive heat dissipation structure of a cabinet according to claim 3, characterized in that: The four corners of the mounting plate (8) are mounted on the filter mounting frame (14) by means of screw locking.

5. The passive heat dissipation structure of a cabinet according to claim 4, characterized in that: The driving assembly (10) comprises a fixing seat (18) which is locked and mounted on a mounting plate (8); the fixing seat (18) is arranged in an L-shaped structure; a notch groove (19) is provided on one side of the fixing seat (18); a limit mounting seat (20) is installed in the notch groove (19); the limit mounting seat (20) is connected to a spring (21); the free end of the spring (21) is connected to a connector (22); and a heat-expandable material (23) is provided between the limit mounting seat (20) and the connector (22).

6. The passive heat dissipation structure of a cabinet according to claim 5, characterized in that: The position limiting mounting seat (20) and the connecting head (22) are both made of brass.

7. The passive heat dissipation structure of a cabinet according to claim 6, characterized in that: The connecting head (22) is connected to a locking bolt (24), and the connecting head (22) is locked and mounted on the grid plate (12) by means of the locking bolt (24).

8. The passive heat dissipation structure of a cabinet according to claim 7, characterized in that: The grid plate (12) is provided with guide grooves (25) at the upper and lower sides, and guide posts (26) are provided in the guide grooves (25). The guide posts (26) are fixedly mounted on the mounting plate (8).

9. The passive heat dissipation structure of a cabinet according to claim 8, characterized in that: The cabinet (1) is also provided with fixed connection devices (27) on the upper and lower sides of the back, and the cabinet (1) is installed on an external holding rod (28) through the fixed connection device (27). A heat pipe (29) is also installed on the external holding rod (28), and the input end of the heat pipe (29) is connected to the output end of the heat dissipation channel (3).

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