Outdoor cabinet type heat dissipation air duct structure and equipment

Abstract

The utility model relates to the technical field of electric power systems, in particular to an outdoor cabinet type heat dissipation air duct structure and equipment. Comprising a main air duct and an auxiliary air duct, the main air duct is used for dissipating heat of the high-power heating assembly, the main air duct is provided with an air inlet, an air outlet and a fan assembly installed between the air inlet and the air outlet, and the air inlet is formed in the upper portion of the air outlet; the auxiliary air channel comprises an alternating-current cavity and a direct-current cavity, the alternating-current cavity is divided into an upper part and a lower part by a heat exchanger, the lower part of the alternating-current cavity is communicated with an air inlet of the heat exchanger, and the upper part of the alternating-current cavity is connected with an air outlet of the heat exchanger. The alternating-current cavity communicates with the direct-current cavity through an air return duct. The main air duct and the auxiliary air duct are arranged, and the two circulating air ducts are relatively independent and not communicated with each other, so that graded heat dissipation of different heating assemblies is achieved, and the fan efficiency and the heat dissipation efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power systems, and in particular to an outdoor cabinet-type heat dissipation air duct structure and equipment. Background Art

[0002] In recent years, photovoltaic power generation has been increasingly valued as a green and renewable energy source. Outdoor cabinets are widely used in photovoltaic power generation equipment. Among them, air-cooled cabinets have become the main choice for outdoor equipment because of their good heat dissipation effect, relatively low sealing requirements, safety and reliability, and low cost. At present, the size of photovoltaic equipment is getting smaller and smaller, the structure is getting more and more compact, and the heat flux density is getting higher and higher. It is necessary to reasonably arrange the air ducts and devices to achieve good heat dissipation of the devices. How to reasonably arrange the air ducts to dissipate the heat of different heat-generating components in the equipment and achieve efficient and reliable heat dissipation of the equipment has become a difficult point. Utility Model Content

[0003] The utility model aims to provide an outdoor cabinet type heat dissipation duct structure and equipment to solve the problem of efficient heat dissipation of different heating components in the equipment.

[0004] To achieve the above purpose, the following technical solution is adopted.

[0005] An outdoor cabinet-type heat dissipation air duct structure comprises a main air duct and an auxiliary air duct, wherein the main air duct is used to dissipate heat for high-power heat-generating components, and is provided with an air inlet, an air outlet and a fan assembly installed between the air inlet and the air outlet, and the air inlet is arranged at the upper part of the air outlet; the auxiliary air duct is used to dissipate heat for low-power heat-generating components, and the main air duct and the auxiliary air duct are completely isolated, and the auxiliary air duct comprises an AC chamber and a DC chamber, and the AC chamber is separated into an upper and lower part by a heat exchanger, the lower part of the AC chamber is communicated with the air inlet of the heat exchanger, the upper part of the AC chamber is connected with the exhaust port of the heat exchanger, and the AC chamber and the DC chamber are communicated through a return air duct.

[0006] Optionally, the air inlet of the main air duct is equipped with a rainproof elbow for rain protection.

[0007] Optionally, the air inlet of the main air duct is provided with a maze-like channel for dust prevention.

[0008] Optionally, the fan assembly is provided with an air guide plate, and the air guide plate is used to disperse the wind flow to each heating component.

[0009] Optionally, the main air duct is provided with a speed regulating plate, there are multiple speed regulating plates, the angles between the multiple speed regulating plates are adjustable, the speed regulating plates are respectively arranged on both sides of the heating component, and the speed regulating plates are used to concentrate the airflow to the surface of the heating component.

[0010] Optionally, a centrifugal fan is installed on the upper part of the heat exchanger to discharge internal heat.

[0011] Optionally, the air inlet and / or the air outlet of the heat exchanger is provided with a dustproof component.

[0012] Optionally, the heat exchanger is arranged as an integral unit.

[0013] Optionally, it also includes a first partition, a second partition, a third partition, a fourth partition and a fifth partition, the fifth partition divides the cabinet shell into an upper cavity and a lower cavity, the first partition and the second partition divide the lower cavity into the AC cavity, the main air duct and the DC cavity; the third partition and the fourth partition divide the cabinet shell into the main air duct and the two return air ducts.

[0014] An outdoor cabinet type device comprises an outdoor cabinet type heat dissipation air duct structure.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. This application sets a main air duct and an auxiliary air duct. The two circulation air ducts are relatively independent and not connected to each other to achieve graded heat dissipation of different heat-generating components, thereby improving the fan efficiency and heat dissipation efficiency.

[0017] 2. This application sets the main air duct inlet at the upper part of the air outlet, which is far away from the ground, which can effectively reduce the entry of ground moisture and foreign matter and improve the protection capability of the equipment.

[0018] 3. This application can improve the rain and dust proof performance by installing a 90° rainproof elbow and a maze-type channel at the air inlet.

[0019] 4. This application provides an air guide plate to evenly distribute the wind to each heating component, thereby improving the heat dissipation efficiency.

[0020] 5. This application sets a speed regulating plate to concentrate the wind flow passing through the heating component to the surface of the heating component, while increasing the speed of the wind flow passing through the surface of the heating component, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the internal air duct of an outdoor cabinet type heat dissipation air duct structure embodiment of the utility model.

[0022] Figure 2 It is a side view of the internal air duct of an outdoor cabinet type heat dissipation air duct structure embodiment of the utility model.

[0023] Figure 3 It is a top view of the internal air duct of an outdoor cabinet type heat dissipation air duct structure embodiment of the utility model.

[0024] Figure 4 It is a schematic diagram of a rainproof elbow of an outdoor cabinet type heat dissipation duct structure embodiment of the utility model.

[0025] Figure 5 The utility model is a schematic diagram of a heat exchanger of an outdoor cabinet type heat dissipation duct structure embodiment.

[0026] Among them, 1-airflow direction, 2-cabinet shell, 3-main air duct, 4-auxiliary air duct, 5-return air duct, 6-fan assembly, 7-heat exchanger, 8-first partition, 9-second partition, 10-third partition, 11-fourth partition, 12-fifth partition, 13-first main heating component, 14-second main heating component, 15-internal heating component, 16-rainproof elbow, 17-wind guide plate, 18-speed regulating plate, 19-first Rain shield, 20-second rain shield, 21-housing, 22-air inlet assembly, 23-hinge, 24-sealing strip, 25-drain hole, 26-mounting frame, 27-centrifugal fan, 28-first partition plate, 29-second partition plate, 30-cavity partition plate, 31-dustproof net, 32-third rain shield, 33-fourth rain shield, 34-air inlet wire mesh, 35-air outlet wire mesh, 36-DC cavity, 37-AC cavity. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0028] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0029] like Figure 1-Figure 5 As shown, an outdoor cabinet-type heat dissipation duct structure includes a main duct 3 and an auxiliary duct 4. The main duct 3 is used to dissipate heat for high-power heating components. The main duct 3 is provided with an air inlet, an air outlet and a fan assembly 6 installed between the air inlet and the air outlet, and the air inlet is arranged at the upper part of the air outlet; the auxiliary duct 4 is used to dissipate heat for low-power heating components. The main duct 3 and the auxiliary duct 4 are completely isolated. The auxiliary duct 4 includes an AC chamber 37 and a DC chamber 36. The AC chamber 37 is separated into two upper and lower parts by a heat exchanger 7. The lower part of the AC chamber 37 is communicated with the air inlet of the heat exchanger 7, and the upper part of the AC chamber 37 is connected to the exhaust port of the heat exchanger 7. The AC chamber 37 and the DC chamber 36 are connected through a return air duct 5.

[0030] Specifically, it also includes a first partition 8, a second partition 9, a third partition 10, a fourth partition 11 and a fifth partition 12. The fifth partition 12 divides the cabinet shell 2 into an upper cavity and a lower cavity. The first partition 8 and the second partition 9 divide the lower cavity into an AC cavity 37, a main air duct 3 and a DC cavity 36. The third partition 10 and the fourth partition 11 divide the cabinet shell 2 into a main air duct 3 and two return air ducts 5. The third partition 10 and the fourth partition 11 have mesh holes at both ends of the lower side. The AC cavity 37 and the DC cavity 36 are connected to the return air duct 5 through the mesh holes. There is a gap between the three groups of main heating components, connecting the upper part of the DC cavity 36 and the upper part of the AC cavity 37. The first main heating component 13 and the second main heating component 14 are high-power heating components, and the internal heating component 15 is a low-power heating component.

[0031] Specifically, the high-power heating component is arranged below the fan component 6 of the main air duct 3, the low-power heating component is arranged in the AC cavity 37 or the DC cavity 36, the fan component 6 is arranged on the fifth partition 12 between the upper cavity and the lower cavity, and the fan component 6 is arranged in the main air duct 3 to guide the external airflow into the main air duct 3. The upper cavity is also called the air collecting cavity, which can be used for the transition before the air enters the main air duct 3 and is waterproof and dustproof.

[0032] As a preferred example, a rainproof elbow 16 is installed at the air inlet of the main air duct 3 for rainproof. The rainproof elbow 16 is a shield that can be set on the outside of the cabinet housing 2. There can be multiple rainproof elbows 16. The rainproof elbow 16 can be 90°, and the air inlet opening of the rainproof elbow 16 faces downward.

[0033] As a preferred example, the air inlet of the main air duct 3 is provided with a labyrinth channel for dust prevention. Specifically, the labyrinth channel may be composed of a plurality of rain shields, specifically an S-shaped labyrinth, to prevent dust and rain from entering.

[0034] As a preferred example, the fan assembly 6 is provided with an air guide plate 17, and the air guide plate 17 is used to disperse the wind flow to each heating component. The fan assembly 6 includes a centrifugal fan 27 and an air guide plate 17. A plurality of air guide plates 17 can be provided, and specifically two air guide plates 17 can be provided on both sides of the centrifugal fan 27, respectively. The two air guide plates 17 are inclined toward the centrifugal fan 27 to guide the air flow blown out by the centrifugal fan 27 to the heating components.

[0035] As a preferred example, the main air duct 3 is provided with a speed regulating plate 18, there are multiple speed regulating plates 18, the angles between the multiple speed regulating plates 18 are adjustable, the speed regulating plates 18 are respectively arranged on both sides of the heating component, and the speed regulating plates 18 are used to concentrate the airflow to the surface of the heating component.

[0036] As a preferred example, a centrifugal fan 27 is installed on the upper part of the heat exchanger 7 to discharge internal heat. The airflow in the direct current cavity 36 flows from bottom to top. After dissipating the heat to the low-power heating components, it flows back to the upper part of the heat exchanger 7 through the gaps between the high-power heating components and the gaps between the high-power heating components and the cabinet shell 2. The centrifugal fan 27 is installed on the upper part of the heat exchanger 7 to extract the hot air out of the equipment to complete the circulation. The centrifugal fan 27 of the heat exchanger 7 is an exhaust type.

[0037] As a preferred example, the air inlet and / or air outlet of the heat exchanger 7 is provided with a dustproof component to prevent rain and dust from entering the interior of the equipment, thereby improving the protection performance of the equipment. The dustproof component may be a dustproof net 31 and an S-shaped maze channel.

[0038] As a preferred example, the heat exchanger 7 is provided as an integral unit, and can be replaced as a whole and its partial components can be disassembled and assembled, so the maintainability is high.

[0039] As a preferred example, it also includes a first partition 8, a second partition 9, a third partition 10, a fourth partition 11 and a fifth partition 12. The fifth partition 12 divides the cabinet shell 2 into an upper cavity and a lower cavity. The first partition 8 and the second partition 9 divide the lower cavity into an AC cavity 37, a main air duct 3 and a DC cavity 36. The third partition 10 and the fourth partition 11 divide the cabinet shell 2 into a main air duct 3 and two return air ducts 5. The third partition 10 and the fourth partition 11 have mesh holes at both ends of the lower side, and the AC cavity 37 and the DC cavity 36 are connected to the return air duct 5 through the mesh holes. There is a gap between the three groups of main heating components, connecting the upper part of the DC cavity 36 and the upper part of the AC cavity 37.

[0040] An outdoor cabinet type device comprises an outdoor cabinet type heat dissipation air duct structure.

[0041] like Figure 1-Figure 3As shown, this patent provides an outdoor cabinet heat dissipation duct structure, which consists of a cabinet shell 2, a rainproof elbow 16, a first rain shield 19, a second rain shield 20, a fan assembly 6, a wind guide plate 17, a speed regulating plate 18, a first main heating assembly 13, a second main heating assembly 14, a first partition 8, a second partition 9, a third partition 10, a fourth partition 11, a fifth partition 12, a heat exchanger 7 and an internal heating assembly 15. The cabinet shell 2 is divided into four cavities and two duct cycles by the first partition 8, the second partition 9, the third partition 10, the fourth partition 11, and the fifth partition 12. The air flow at the air inlet of the main air duct 3 passes through the rainproof elbow 16, the first rain shield 19, and the second rain shield 20, and enters the fan assembly 6 after dust filtering. The wind guide plate 17 homogenizes the air flow, and after the first main heating component 13 dissipates the heat, the wind speed and air flow cross-section are adjusted by the speed regulating plate 18. After the second main heating component 14 dissipates the heat, the main air duct 3 discharges the air flow through the air outlet to achieve heat dissipation of the main heating components; the auxiliary air duct 4 is composed of a heat exchanger 7, a DC chamber 36, a return air duct 5, and an AC chamber 37. The external wind flows into the air inlet at the bottom of the heat exchanger 7, and enters the bottom of the AC chamber 37 through the S-shaped labyrinth channel and the dustproof net 31 on the heat exchanger 7. After dissipating the heat of the internal heat generating components, the wind flows into the DC chamber 36 through the honeycomb ventilation holes on both sides of the bottom of the third partition 10 and the fourth partition 11. After dissipating the heat of the internal heat generating components of the DC chamber 36, the wind flows back to the upper part of the heat exchanger 7 through the upper part of the DC chamber 36. The upper part of the heat exchanger 7 is equipped with a centrifugal fan 27, which extracts the hot air flow and discharges it to the outside of the equipment cabinet housing 2 to complete the auxiliary cycle. The two cycles are independent and uncoupled to achieve heat dissipation of different heat generating components. Improve heat dissipation efficiency and reliability.

[0042] The fifth partition 12 divides the cabinet shell 21 into two parts, the upper part is the air collecting chamber. The first partition 8 and the second partition 9 divide the lower part into three chambers, which are the AC chamber 37, the main air duct 3, and the DC chamber 36 from right to left. The AC chamber 37 is equipped with a heat exchanger 7, and the heat exchanger 7 separates the AC chamber 37 into two parts, the upper part and the lower part. The third partition 10 and the fourth partition 11 divide the cabinet shell 2 into three parts, the main air duct 3 and the two return air ducts 5. The third partition 10 and the fourth partition 11 have mesh holes at both ends of the lower side, and the AC chamber 37 and the DC chamber 36 are connected to the return air duct 5 through the mesh holes. There is a gap between the three groups of main heating components, connecting the upper part of the DC chamber 36 and the upper part of the AC chamber 37.

[0043] The air duct circulation of the utility model includes the main air duct 3 circulation and the auxiliary air duct 4 circulation. The main air duct 3 circulation is the upper air intake, the airflow enters the top rainproof elbow 16, enters the fan assembly 6 after passing through the S-shaped maze composed of the first rain shield 19 and the second rain shield 20, and the fan assembly 6 is installed with a centrifugal fan 27 and a wind guide plate 17. The centrifugal fan 27 sucks the wind and forces it to flow downward, providing driving force for the main air duct 3 circulation. The wind guide plate 17 disperses the centrifugal airflow to the three main heating components to dissipate the heat. The airflow passing through the first main heating component 13 reaches the upper part of the second main heating component 14 through the main air duct 3 cavity, and the airflow cross section is contracted by the speed regulating plate 18, so that the airflow speed is accelerated and concentrated to the periphery of the second main heating component 14, and the second main heating component 14 is effectively dissipated. The heat flow after heat dissipation is discharged from the outside of the equipment through the bottom to complete the main circulation; the auxiliary air duct 4 circulation is the upper air intake mode. The wind flows to the bottom of the heat exchanger 7 and enters the lower part of the AC chamber 37. After cooling the internal heat generating components, the wind flows into the return air duct 5 through the mesh holes at the bottom of the third partition 10 and the fourth partition 11, and then enters the DC chamber 36 through the return air duct 5. The wind in the DC chamber 36 flows from bottom to top. After cooling the internal heat generating components, the wind flows back to the upper part of the heat exchanger 7 through the gaps between the main heat generating components and the gaps between the main heat generating components and the cabinet shell 2. A centrifugal fan 27 is installed on the upper part of the heat exchanger 7 to extract the hot air out of the equipment to complete the circulation. The driving force for the circulation of the auxiliary air duct 4 is the centrifugal fan 27 of the heat exchanger 7, and the centrifugal fan 27 is an exhaust type.

[0044] like Figure 4 As shown, the air inlet channel of the rainproof elbow 16 is perpendicular to the air outlet channel, and the rainproof elbow 16 is composed of a shell 21, an air inlet assembly 22, a hinge 23, and a sealing strip 24. The bottom of the air inlet assembly 22 is a well-shaped frame, and dustproof cotton is installed on the frame to ensure the maximum air intake and good protection ability. The air inlet assembly 22 is connected to the right side of the shell 21 through a hinge 23, and the left side of the air inlet is fixed to the left side of the shell 21 with screws. When the left screws are removed, the air inlet assembly 22 can swing 90° counterclockwise, which is convenient for later maintenance. On the right side of the shell 21, a drainage hole 25 is opened at the position where the air inlet assembly 22 is installed, so that rainwater entering the rainproof elbow 16 can be discharged to achieve a rainproof function. The sealing strip 24 is attached to the installation surface of the rainproof elbow 16 and the cabinet, and fits with the cabinet after installation to achieve a good seal.

[0045] like Figure 5As shown. The structure of the heat exchanger 7 is composed of a mounting frame 26, a centrifugal fan 27, a first partition plate 28, a second partition plate 29, a cavity plate 30, a dust screen 31, a third rain shield 32, a fourth rain shield 33, an air inlet wire mesh 34 and an air outlet wire mesh 35. The interior of the heat exchanger 7 is composed of the first partition plate 28 and the second partition plate 29 as two upper and lower cavities. The lower cavity is the air inlet cavity. The bottom of the air inlet cavity is provided with an air inlet wire mesh 34. The upper part of the air inlet wire mesh 34 is the third rain shield 32 and the fourth rain shield 33, which are arranged at an angle to each other to form a protective maze to prevent large particles of foreign matter from entering. A dust screen 31 is installed on the side wall of the casing in front of the fourth rain shield 33 to further improve the dustproof ability. The upper part of the heat exchanger 7 is an exhaust cavity, which is equipped with a centrifugal fan 27 and an exhaust wire mesh 35. The centrifugal fan 27 is a suction type, and the wind flows outward. There is a partition plate 30 in the middle of the outside of the heat exchanger 7, which divides the outside of the heat exchanger 7 into two parts, upper and lower.

[0046] It is known from common technical knowledge that the present invention can be implemented by its implementation schemes that do not deviate from its spirit or essential features. Therefore, the above disclosed implementation schemes are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An outdoor cabinet type heat dissipation duct structure, characterized in that: include A main air duct (3), the main air duct (3) being used to dissipate heat from a high-power heating component, the main air duct (3) being provided with an air inlet, an air outlet, and a fan assembly (6) installed between the air inlet and the air outlet, the air inlet being arranged above the air outlet; An auxiliary air duct (4), the auxiliary air duct (4) is used to dissipate heat for low-power heating components, the main air duct (3) and the auxiliary air duct (4) are completely isolated, the auxiliary air duct (4) comprises an AC chamber (37) and a DC chamber (36), the AC chamber (37) is separated into two parts, an upper part and an lower part, by a heat exchanger (7), the lower part of the AC chamber (37) is connected to the air inlet of the heat exchanger (7), the upper part of the AC chamber (37) is connected to the air outlet of the heat exchanger (7), and the AC chamber (37) and the DC chamber (36) are connected via a return air duct (5).

2. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The air inlet of the main air duct (3) is equipped with a rainproof elbow (16) for rainproofing.

3. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The air inlet of the main air duct (3) is provided with a labyrinth-type passage for dust prevention.

4. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The fan assembly (6) is provided with an air guide plate (17), and the air guide plate (17) is used to evenly distribute the wind flow to each heating assembly.

5. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The main air duct (3) is provided with a speed regulating plate (18), there are a plurality of the speed regulating plates (18), the angles between the plurality of the speed regulating plates (18) are adjustable, the speed regulating plates (18) are respectively provided on both sides of the heating component, and the speed regulating plates (18) are used to concentrate the airflow onto the surface of the heating component.

6. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: A centrifugal fan (27) is installed on the upper part of the heat exchanger (7) to discharge internal heat.

7. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The air inlet and / or the air outlet of the heat exchanger (7) is provided with a dustproof component.

8. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The heat exchanger (7) is arranged as an integral unit.

9. The outdoor cabinet type heat dissipation duct structure according to claim 1, characterized in that: The cabinet further comprises a first partition (8), a second partition (9), a third partition (10), a fourth partition (11) and a fifth partition (12); the fifth partition (12) divides the cabinet shell (2) into an upper cavity and a lower cavity; the first partition (8) and the second partition (9) divide the lower cavity into the AC cavity (37), the main air duct (3) and the DC cavity (36); the third partition (10) and the fourth partition (11) divide the cabinet shell (2) into the main air duct (3) and the two return air ducts (5).

10. An outdoor cabinet device, characterized in that: It comprises the outdoor cabinet type heat dissipation duct structure as described in any one of claims 1 to 9.

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