Ventilation and heat dissipation assembly of power distribution cabinet

Abstract

The utility model discloses a ventilation and heat dissipation assembly of a power distribution cabinet, and relates to the field of power distribution cabinets, and the key points of the technical scheme are that the ventilation and heat dissipation assembly comprises a power distribution cabinet body, the power distribution cabinet body is provided with an upper opening and a lower opening, the top end of the power distribution cabinet body is provided with an upper heat dissipation member, and the bottom is provided with a lower heat dissipation member; the upper heat dissipation piece exhausts hot air in the power distribution cabinet body from the top of the power distribution cabinet body through a heat dissipation fan, and the direction of an air outlet faces downwards through an air outlet pipe; the lower heat dissipation piece comprises a bottom plate installed at the bottom of the power distribution cabinet body, a plurality of ventilation grooves are formed in the bottom plate, the effect is that the direction of an air opening faces downwards, dust is not prone to entering from the position, the dust can be well prevented from being attached to a heat dissipation fan, the ventilation and heat dissipation assembly can exhaust rising hot air from the top of the power distribution cabinet body, and the heat dissipation effect is good. And cold air enters the power distribution cabinet body from the ventilation slots at the bottom, so that the cold air and the hot air can be quickly converted and can be well matched with the natural law, and the heat dissipation effect is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinets, and more specifically, it relates to a ventilation and heat dissipation component for power distribution cabinets. Background Technology

[0002] A distribution cabinet is a cabinet that centrally houses electrical equipment such as switches, meters, and protective devices. It plays a crucial role in the distribution, control, and protection of electrical energy in a power system. Distribution cabinets typically consist of a metal casing, mounting plates for various electrical components, and inlet and outlet wiring sections. Their heat dissipation methods usually include natural ventilation and air cooling.

[0003] Some existing power distribution cabinets have design flaws, primarily in the improper placement of ventilation vents and cooling fans. They are typically located on the side. According to the principle of thermal expansion and contraction, air expands in volume and decreases in density when heated. The less dense hot air is lighter than the surrounding denser cold air, creating an upward buoyancy. This buoyancy causes the hot air to rise naturally towards the top of the power distribution cabinet. This makes it difficult for the side-mounted ventilation vents and cooling fans to quickly expel the hot air from the top of the cabinet, severely impacting heat dissipation. Secondly, when the cooling fans (which expel hot air from the power distribution cabinet) are installed on the side or top of the cabinet, they are relatively open, with a large contact area with the external environment. Dust easily adheres to the cooling fans, affecting not only the heat dissipation effect but also potentially damaging them.

[0004] (By designing the heat dissipation vents at the bottom and top of the distribution cabinet, good air circulation can be achieved by utilizing this natural convection principle. When the electrical equipment inside the distribution cabinet generates heat during operation, the hot air rises and is exhausted from the top heat dissipation vent; at the same time, cool air enters the distribution cabinet from the bottom heat dissipation vent, cooling the equipment. This method requires no additional power equipment, is energy-saving and reliable.)

[0005] Therefore, in order to solve the above-mentioned technical problems, this application proposes a ventilation and heat dissipation component for a power distribution cabinet. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a ventilation and heat dissipation component for a power distribution cabinet.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ventilation and heat dissipation component for a power distribution cabinet, comprising a power distribution cabinet body with openings at the top and bottom, wherein an upper heat dissipation component is installed at the top of the power distribution cabinet body and a lower heat dissipation component is installed at the bottom;

[0008] The upper heat dissipation component uses a cooling fan to expel the hot air inside the power distribution cabinet from its top, and uses an air outlet pipe to direct the air outlet downwards.

[0009] The lower heat dissipation component includes a base plate installed at the bottom of the power distribution cabinet. The base plate has multiple ventilation slots, and support seats are fixedly connected to the bottom of the base plate around its perimeter.

[0010] Preferably, the upper heat dissipation component includes a top plate installed at the top of the power distribution cabinet, the cooling fan is embedded and fixed inside the top plate, a connecting housing is installed at the top of the top plate, and the air outlet duct is L-shaped and installed on both sides of the connecting housing.

[0011] Preferably, frame plates are installed on the connecting surfaces of the top plate and the bottom plate, which can more reliably fix the ventilation and heat dissipation components to the power distribution cabinet.

[0012] Preferably, a flip cover is installed at the bottom edge of the air outlet pipe, a connecting plate is fixedly connected to the outer side wall of the air outlet pipe, and a bending spring is installed between the connecting plate and the flip cover.

[0013] Preferably, an iron block is fixedly connected to one end of the flip cover opposite to the flipping part, and a magnet that attracts the iron block is installed on one end of the outer wall of the air outlet pipe opposite to the connecting plate. Through the mutual attraction between the iron block and the magnet, the flip cover can be made to fit tightly against the sealing opening of the air outlet pipe to reduce gaps and prevent dust from entering or leaving the air outlet to a greater extent.

[0014] Preferably, the support base includes vertical rods fixed to the four corners of the bottom of the base plate, and the ends of the vertical rods are all fixedly connected to support plates. The vertical rods are used to support the base plate to a certain height.

[0015] Preferably, a dustproof metal mesh is installed inside the ventilation slot, which can effectively prevent dust from entering the power distribution cabinet from the ventilation slot.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The upper and lower heat dissipation components of this utility model are respectively installed on the upper and lower sides of the distribution cabinet. The cooling fan exhausts the hot air inside the distribution cabinet from the top and then through the air outlet. The air outlet faces downward, making it difficult for dust to enter from here, which can effectively prevent dust from adhering to the cooling fan. After the hot air is exhausted, due to the air pressure difference, the new cold air will re-enter the distribution cabinet from the ventilation slot on the bottom plate. Since hot air rises and cold air sinks, this ventilation and heat dissipation component can exhaust the rising hot air from the top of the distribution cabinet and allow cold air to enter the distribution cabinet from the bottom ventilation slot, thereby quickly converting hot and cold air. This can work well with this natural law and significantly improve the heat dissipation effect. This solves the problem of improper placement of ventilation openings and cooling fans in the background technology, which are generally placed on the side, resulting in poor heat dissipation effect. At the same time, when the cooling fan is installed on the side and top of the distribution cabinet, the contact area with the external environment is large, and dust is easy to adhere to the cooling fan.

[0018] 2. The flip cover of this utility model closes the air outlet of the air outlet pipe under the influence of the bending spring. At this time, the iron block on the flip cover is attracted to the magnet on the air outlet pipe, so that the flip cover can fit tightly against the air outlet, thereby sealing the air outlet pipe more comprehensively and effectively preventing dust from entering from here.

[0019] 3. The frame plate of this utility model can be directly fitted onto the power distribution cabinet for installation, increasing the contact surface between the upper and lower heat dissipation components and the power distribution cabinet, thereby leaving more fixing parts and more reliably fixing the ventilation and heat dissipation components to the power distribution cabinet. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the specific structure of the upper heat sink in this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged view of the local structure of A;

[0024] Figure 4 This is a schematic diagram of the specific structure of the heat sink component of this utility model.

[0025] In the diagram: 1. Distribution cabinet; 2. Upper heat sink; 201. Cooling fan;

[0026] 202. Air outlet duct; 203. Top plate; 204. Connecting housing;

[0027] 3. Lower heat sink; 301. Base plate; 302. Ventilation slot;

[0028] 303, Support base; 3031, Vertical rod; 3032, Support plate; 4. Frame plate;

[0029] 5. Flip-top cover; 6. Connecting plate; 7. Bending spring; 8. Iron block;

[0030] 9. Magnet; 10. Dustproof metal mesh. Detailed Implementation

[0031] like Figure 1-4 As shown, this utility model provides a ventilation and heat dissipation component for a power distribution cabinet, including a power distribution cabinet body 1, with openings at the top and bottom of the power distribution cabinet body 1, an upper heat dissipation component 2 installed at the top of the power distribution cabinet body 1, and a lower heat dissipation component 3 installed at the bottom.

[0032] The upper heat sink 2 uses a cooling fan 201 to expel the hot air inside the power distribution cabinet 1 from its top, and uses an air outlet 202 to direct the air outlet downwards.

[0033] The lower heat dissipation component 3 includes a base plate 301 installed at the bottom of the distribution cabinet 1. The base plate 301 has multiple ventilation slots 302. Support seats 303 are fixedly connected to the bottom of the base plate 301 around its perimeter. Dustproof metal mesh 10 is installed inside the ventilation slots 302. The dustproof metal mesh 10 effectively prevents dust from entering the distribution cabinet 1 from the ventilation slots 302. Since the base plate 301 is supported by the support seats 303, the ventilation slots 302 are a certain distance from the ground, which does not easily obstruct the entry of air. The support seats 303 include vertical rods 3031 fixed to the four corners of the bottom of the base plate 301. Support plates 3032 are fixedly connected to the ends of the vertical rods 3031. The vertical rods 3031 are used to support the base plate 301 to a certain height. The cross-section of the support plates 3032 is larger than that of the vertical rods 3031, which can increase the contact with the ground and improve the stability of the support seats 303.

[0034] In use, the upper heat sink 2 and the lower heat sink 3 are installed on the upper and lower sides of the distribution cabinet 1, respectively. The cooling fan 201 exhausts the hot air inside the distribution cabinet 1 from the top, and then exhausts it through the air outlet 202. The air outlet faces downwards, making it difficult for dust to enter from here, which effectively prevents dust from adhering to the cooling fan 201. After the hot air is exhausted, due to the air pressure difference, new cool air will re-enter the distribution cabinet 1 through the ventilation slot 302 on the bottom plate 301. Due to the natural law that hot air rises and cool air sinks (when the electrical equipment inside the distribution cabinet...), During operation, heat is generated, raising the temperature of the surrounding air. According to the principle of thermal expansion and contraction, air expands in volume and decreases in density when heated. The less dense hot air is lighter than the surrounding denser cold air, thus generating an upward buoyancy. This buoyancy causes the hot air to rise naturally and move towards the top of the distribution cabinet. This ventilation and heat dissipation component can exhaust the rising hot air from the top of the distribution cabinet 1, while cold air enters the distribution cabinet 1 from the bottom ventilation slot 302, thereby quickly converting hot and cold air. This works well with this natural law and significantly improves the heat dissipation effect.

[0035] The upper heat dissipation component 2 includes a top plate installed at the top of the power distribution cabinet 1. A cooling fan 201 is embedded and fixed inside the top plate 203. A connecting housing 204 is installed at the top of the top plate 203. The air outlet duct 202 is L-shaped and installed on both sides of the connecting housing 204. That is, after the hot air inside the power distribution cabinet 1 is discharged through the cooling fan 201 on the top plate, the hot air will enter the connecting housing 204 and finally be discharged from the air outlet duct 202 on both sides of the connecting housing 204. Since the air outlet duct 202 is L-shaped, the air outlet can be directed downwards to avoid dust from entering.

[0036] Furthermore, a flip cover 5 is installed at the bottom edge of the air outlet duct 202, a connecting plate 6 is fixedly connected to the outer wall of the air outlet duct 202, and a bending spring 7 is installed between the connecting plate 6 and the flip cover 5. An iron block 8 is fixedly connected to the end of the flip cover 5 opposite to the flipping part, and a magnet 9 that attracts the iron block 8 is installed on the end of the outer wall of the air outlet duct 202 opposite to the connecting plate 6.

[0037] In the initial state, the flip cover 5, under the influence of the bending spring 7, closes the air outlet of the air duct 202. At this time, the iron block 8 on the flip cover 5 is attracted to the magnet 9 on the air duct 202 (the attraction force is small), so that the flip cover 5 can fit tightly against the air outlet, thus sealing the air duct 202 more comprehensively and effectively preventing dust from entering from here (although the opening is downward, some dust will still enter from here over time). When the cooling fan 201 is running, when air flows out from the air outlet of the air duct 202, the flip cover 5 will open due to the influence of the airflow force. At this time, the iron block 8 and the magnet 9 begin to separate, and the bending spring 7 can also be compressed, allowing hot air to be discharged normally. After the cooling fan 201 stops running, the flip cover 5 is no longer under force, and the bending spring 7 will return to its original position using its elasticity, thus flipping the flip cover 5 back to its initial position, allowing the iron block 8 on the flip cover 5 to attract the magnet 9 on the air duct 202 again.

[0038] Among them, frame plates 4 are installed on the connecting surfaces of the top plate and the bottom plate 301. The frame plates 4 can be directly fitted onto the power distribution cabinet 1 for installation, increasing the contact surface between the upper heat dissipation component 2 and the lower heat dissipation component 3 and the power distribution cabinet 1, thereby leaving more fixing parts and more reliably fixing the ventilation and heat dissipation components to the power distribution cabinet 1.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A ventilation and heat dissipation assembly for a power distribution cabinet, comprising a power distribution cabinet body (1), wherein the power distribution cabinet body (1) has openings at the top and bottom, characterized in that: The top of the power distribution cabinet (1) is equipped with an upper heat sink (2), and the bottom is equipped with a lower heat sink (3). The upper heat sink (2) uses a cooling fan (201) to expel the hot air inside the power distribution cabinet (1) from its top, and uses an air outlet pipe (202) to direct the air outlet downwards; The lower heat sink (3) includes a base plate (301) installed at the bottom of the power distribution cabinet (1). The base plate (301) has multiple ventilation slots (302) and support seats (303) are fixedly connected around the bottom of the base plate (301).

2. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 1, characterized in that: The upper heat dissipation component (2) includes a top plate (203) installed at the top of the power distribution cabinet (1), the heat dissipation fan (201) is embedded and fixed inside the top plate (203), the top of the top plate (203) is equipped with a connecting housing (204), and the air outlet pipe (202) is L-shaped and installed on both sides of the connecting housing (204).

3. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 2, characterized in that: A frame plate (4) is installed on the connecting surface of the top plate (203) and the bottom plate (301).

4. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 2, characterized in that: A flip cover (5) is installed at the bottom edge of the air outlet pipe (202), a connecting plate (6) is fixedly connected to the outer side wall of the air outlet pipe (202), and a bending spring (7) is installed between the connecting plate (6) and the flip cover (5).

5. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 4, characterized in that: An iron block (8) is fixedly connected to the end of the flip cover (5) opposite to the flip part, and a magnet (9) that attracts the iron block (8) is installed on the outer wall of the air outlet pipe (202) opposite to the end of the connecting plate (6).

6. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 1, characterized in that: The support base (303) includes vertical rods (3031) fixed at the four corners of the bottom end of the base plate (301), and the ends of the vertical rods (3031) are all fixedly connected to support plates (3032).

7. The ventilation and heat dissipation assembly for a power distribution cabinet according to claim 1, characterized in that: The ventilation slot (302) is equipped with a dustproof metal mesh (10).

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