A power distribution box filtering and cooling system and a power distribution box

Abstract

The utility model provides a kind of distribution box filtering cooling system, it includes cabinet, multiple mutually isolated function compartments are equipped in cabinet, at least one air filter compartment is equipped.Air filter compartment top is equipped with air outlet, bottom is equipped with air inlet, fan is equipped at air outlet, and filter assembly is equipped in compartment along vertical direction.Adjacent function compartment partition is opened with airflow exchange hole, air inlet, filter assembly, airflow exchange hole and air outlet are sequentially communicated, form airflow passage through multiple function compartments, fan is located at the end of passage and drives airflow circulation.External air enters from bottom air inlet, and after multistage filtration, it becomes clean airflow, flows through each function compartment and carries away heat, is discharged by top fan, forms forced circulation.The scheme compared with tradition, can improve heat dissipation efficiency by directional airflow, avoid heat accumulation, and multilayer filtration can block dust, has excellent dustproof performance while high-efficiency heat dissipation, applicable to the working environment of much dust.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, and in particular to a distribution box filtration and cooling system and a distribution box. Background Technology

[0002] With the widespread application of power equipment, distribution boxes, as core equipment for power distribution and control, generate a large amount of heat during operation due to their internal electrical components (such as circuit breakers, contactors, and frequency converters). Poor heat dissipation will lead to a continuous rise in the box temperature, affecting not only the performance and lifespan of the electrical components but also potentially causing equipment failures and even safety accidents. Therefore, effectively reducing the internal temperature of distribution boxes and improving heat dissipation efficiency has become a pressing technical problem to be solved in this field.

[0003] Existing technologies for electrical distribution boxes employ heat pipe or liquid cooling solutions, but these technologies are complex, costly, and inconvenient to maintain, making them difficult to apply on a large scale in ordinary distribution boxes. Therefore, there is an urgent need for a simple, efficient, adaptable, and cost-effective electrical distribution box cooling solution to address the shortcomings of existing technologies.

[0004] Against this backdrop, patent CN105226534 A proposes an improved heat dissipation structure for distribution boxes, aiming to optimize the heat dissipation path and improve heat dissipation efficiency to meet the needs of different application scenarios.

[0005] Despite the advancements in this technology, the inventors discovered at least the following problems in the actual use of distribution boxes:

[0006] Because air convection is used to dissipate heat inside the distribution box, when outside air enters the distribution box, it also brings dust into the box. This brings a lot of dust to the various electronic components inside the distribution box. Dust can generate static electricity, which seriously affects the normal operation of various electronic components.

[0007] Given the limitations of existing power distribution boxes, there is an urgent need for a new technical solution to address the problem of excessive dust inside existing heat dissipation power distribution boxes. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, this utility model proposes a power distribution box filtration and cooling system to solve the problem of excessive dust inside the existing heat dissipation power distribution box.

[0009] In a first aspect, a distribution box filtration and cooling system includes:

[0010] The cabinet contains multiple isolated functional compartments.

[0011] The functional compartment includes at least one air filter compartment, the top of which is provided with an air outlet and the bottom with an air inlet, and a fan for drawing out gas from the cabinet is installed at the air outlet.

[0012] The air filter chamber is equipped with filter components arranged sequentially along the vertical direction.

[0013] Airflow exchange holes are provided on the partition between adjacent functional compartments;

[0014] The air inlet, filter assembly, air exchange hole and air outlet are connected in sequence to form an airflow channel that runs through multiple functional compartments, and the fan is located at the end of the airflow channel to drive airflow circulation.

[0015] Furthermore, the filtering assembly includes a first filter screen and a second filter screen arranged in parallel.

[0016] Furthermore, the first filter screen and the second filter screen are arranged sequentially along the airflow direction, and the mesh size of the second filter screen is smaller than that of the first filter screen.

[0017] Furthermore, the fan is provided with airflow exchange holes on both the left and right sides, and the fan is positioned closer to one of the airflow exchange holes and further away from the airflow exchange hole on the other side.

[0018] Furthermore, the airflow exchange holes are staggered in their positions on adjacent partitions, forming a meandering airflow path.

[0019] Furthermore, the air inlet and the air outlet are located on the same side of the air filter chamber and are arranged in a staggered manner.

[0020] Furthermore, the functional compartments also include a high-voltage compartment, a low-voltage compartment, a fire-fighting battery compartment, and an incoming line compartment;

[0021] The high-pressure chamber and the low-pressure chamber are located above and below the air filter chamber, respectively.

[0022] Furthermore, the fire-fighting battery compartment is located between the air filter compartment and the inlet compartment.

[0023] In addition, a distribution box is proposed, characterized in that:

[0024] This includes the aforementioned distribution box filtration and cooling system and fire extinguishing components;

[0025] The fan automatically shuts off when the fire extinguishing mechanism is activated.

[0026] Furthermore, the fire extinguishing component is installed upside down on the top of the fire-fighting battery compartment, with its fire extinguishing nozzle facing the battery.

[0027] The technical solutions provided in this application have the following advantages compared with the prior art:

[0028] This utility model provides a power distribution box filtration and cooling system. External air enters through the bottom air inlet, undergoes multi-stage filtration to form clean airflow, flows through air exchange holes to each functional compartment to remove heat, and is finally exhausted by a top fan, forming a forced circulation. Specifically, the system includes a cabinet containing multiple isolated functional compartments. Each functional compartment includes at least one air filtration compartment with an air outlet at the top and an air inlet at the bottom. A fan is installed at the air outlet to extract air from the cabinet. Filter components are arranged vertically within each air filtration compartment. Air exchange holes are formed on the partitions between adjacent functional compartments. The air inlet, filter components, air exchange holes, and air outlet are sequentially connected to form an airflow channel penetrating multiple functional compartments, and the fan is located at the end of the airflow channel to drive airflow circulation. Compared with traditional solutions, this technical solution achieves two key advantages: first, it significantly improves heat dissipation efficiency through directional airflow organization, avoiding heat accumulation; second, the multi-layer filtration system effectively blocks dust and other contaminants from entering the cabinet, thus ensuring both efficient heat dissipation and excellent dustproof performance, making it particularly suitable for dusty working environments. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0032] Figure 1 This is a schematic diagram of a power distribution box filtration and cooling system provided in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the airflow of a power distribution box filtration and cooling system provided in an embodiment of this application;

[0034] Figure 3A schematic diagram of the structure of a filter assembly in a power distribution box filtration and cooling system provided in this application embodiment;

[0035] Figure 4 This is a schematic diagram of another embodiment of the airflow exchange port of this application;

[0036] Figure 5 This is a schematic diagram showing the fan location in this application;

[0037] Figure 6 A schematic diagram of the distribution box in this application;

[0038] Figure label explanation:

[0039] 1-Cabinet, 11-Air filter compartment, 111-Air outlet, 112-Air inlet, 113-Fan, 114-Filter assembly, 1141-First filter, 1142-Second filter, 1A-Top, B-Bottom, C-Airflow channel, 12-High-pressure compartment, 13-Low-pressure compartment, 14-Fire battery compartment, 15-Inlet cable compartment, 16-Baffle, 161-Airflow exchange hole. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0042] To address the problem of excessive dust accumulation inside existing heat dissipation distribution boxes, this technical solution provides a distribution box filtration and cooling system, such as... Figure 1 As shown, the system includes: a cabinet 1, which is a rectangular prism. The cabinet 1 contains multiple isolated functional compartments, separated by partitions 16. These functional compartments include a high-voltage compartment 12, a low-voltage compartment 13, a fire-fighting battery compartment 14, an inlet cable compartment 15, and an air filter compartment 11. The high-voltage compartment 12 and the low-voltage compartment 13 are located above and below the air filter compartment 11, respectively.

[0043] This design primarily addresses issues such as interference, safety hazards, and maintenance inconvenience caused by the mixed installation of electrical equipment. Its principle lies in using physical isolation to separate electrical equipment of different voltage levels and functional attributes into designated zones. For example, separating the high-voltage compartment 12 from the low-voltage compartment 13 avoids high-low voltage interference; the fire-fighting battery compartment 14 is independently set up to ensure the safety and stability of emergency power; and the air filter compartment 11 is specifically used to purify the air entering the cabinet. In this way, mutual interference between electrical equipment is reduced, safety risks such as short circuits and leakage are lowered, while also facilitating equipment installation, inspection, and maintenance, thus improving the overall safety, stability, and reliability of the distribution box.

[0044] In one embodiment of this utility model, such as Figure 1 As shown, the high-pressure chamber 12 and the low-pressure chamber 13 are located above and below the air filter chamber 11, respectively. The fire-fighting battery chamber 14 and the inlet cable chamber 15 are arranged sequentially to the right of the air filter chamber 11, that is, the fire-fighting battery chamber 14 is located between the air filter chamber 11 and the inlet cable chamber 15.

[0045] It should be understood that with this design, the gas inside the cabinet 1 needs to be purified by the air filter chamber 11 before entering each functional area, to prevent dust from entering other functional chambers, to ensure that electrical components operate in a clean environment, and to ensure the safe and stable operation of the power distribution box.

[0046] Detailed, such as Figure 2 As shown, the air filtration chamber 11 has an air outlet 111 at its top A and an air inlet 112 at its bottom B. A fan 113 for drawing out gas from the chamber is installed at the air outlet 111. A filter assembly 114 is arranged vertically inside the air filtration chamber 11. The filter assembly 114 is located between the air inlet 112 and the air outlet 111. Air exchange holes 161 are provided on the partitions 16 between adjacent functional chambers and on the top of the fire-fighting battery chamber 14. The air inlet 111, filter assembly 114, air exchange holes 161, and air outlet 112 are sequentially connected to form an airflow channel C that runs through multiple functional chambers. The fan 113 is located at the end of the airflow channel C to drive airflow circulation.

[0047] like Figure 3The fan 113 is controlled by an electrical circuit within the cabinet 1. During operation, it exhausts airflow from the cabinet 1 to the outside, creating a low-pressure environment inside the cabinet 1 with a lower pressure than the outside air pressure. Based on this pressure difference, outside air enters through the air inlet 112 at the bottom B of the cabinet 1. After entering the cabinet 1, it passes through the filter assembly 114 within the air filter chamber 11, effectively intercepting large particles. Since both the fan 113 and the air outlet 111 are located at the top A of the cabinet 1, the air pressure in this area further decreases when the fan operates, creating a stronger suction. Under the influence of the pressure gradient, the filtered airflow flows from the bottom B of the cabinet, sequentially through the filter assembly 114, and continuously towards the top A, finally exiting through the air outlet 111. This design ensures that the air entering the cabinet 1 is clean and has a low dust content, achieving a highly efficient filtration effect.

[0048] In one embodiment of this utility model, such as Figure 3 As shown, the filter assembly 114 includes a first filter screen 1141 and a second filter screen 1142 arranged in parallel. In this embodiment, the first filter screen 1141 is a pre-filter, such as a stainless steel mesh, to initially filter out large particles. The second filter screen 1142 is, for example, an activated carbon mesh, to filter out harmful gases. This design ensures that the airflow becomes clean and low in sand content after passing through the filter assembly 114. Of course, the first filter screen 1141 and the second filter screen 1142 are not limited to these two materials; other materials can be used according to actual needs.

[0049] In one embodiment of the present invention, the first filter screen 1141 and the second filter screen 1142 are arranged sequentially along the airflow direction, and the mesh size of the second filter screen 1142 is smaller than that of the first filter screen 1141.

[0050] In use, the first filter screen 1141 has a larger mesh size, serving as a primary filter to intercept larger dust and debris particles in the air, reducing the burden on subsequent filters. The second filter screen 1142 has a smaller mesh size, performing a secondary fine filtration of the remaining fine particles in the air, building upon the primary filtration. Driven by the fan 113, air passes through the first and second filters sequentially, achieving graded filtration from coarse to fine. This design effectively improves filtration efficiency, ensuring high air cleanliness entering the distribution box, reducing dust corrosion of electrical components, and extending equipment lifespan.

[0051] The ultimate goal of the clean airflow mentioned above is to dissipate heat from the distribution box. However, to achieve effective heat dissipation in the distribution box, good air convection is required inside the distribution box.

[0052] In one embodiment of this utility model, such as Figure 4As shown, the airflow exchange holes 161 are staggered on adjacent partitions 16, forming a meandering airflow path. This design primarily addresses the problem of insufficient heat exchange due to rapid direct airflow in traditional distribution boxes. It mainly utilizes a staggered layout to break the conventional straight airflow path, forcing the airflow to turn multiple times between functional compartments, thus extending the residence time of the airflow within the cabinet. During this process, the meandering airflow can have more thorough contact and heat exchange with the electrical components inside the distribution box, effectively removing heat.

[0053] In one embodiment of this utility model, such as Figure 5 As shown, airflow exchange holes 161 are provided on both the left and right sides of the fan 113, and the fan 113 is positioned closer to one of the airflow exchange holes and further away from the other. This design aims to solve the problems of uneven airflow distribution and low heat dissipation efficiency in traditional power distribution box cooling systems. Specifically, this embodiment creates a pressure difference inside the cabinet 1 by asymmetrically setting the positions of the fan 113 and the airflow exchange holes 161.

[0054] During actual operation, due to the operation of fan 113, a more significant pressure change occurs near the airflow exchange port 161 close to the fan, while the pressure at the airflow exchange port 161 farther away from the fan remains relatively stable. This pressure difference causes the air to form a more complex and sufficient flow path between the functional compartments.

[0055] After entering through the air inlet 112, outside air is first purified by the filter assembly 114. Then, the purified air flows into the high-pressure chamber 12 through the air exchange port 161 on the left. After heat exchange in the high-pressure chamber 12, the air sequentially enters the inlet chamber 15 and the low-pressure chamber 13, continuously maintaining full contact with the electrical components in each functional chamber. Afterward, the air returns to the air filter chamber 11 and is exhausted to the outside by the fan 113.

[0056] This unique airflow path design significantly increases the contact area and contact time between air and electrical components, making heat exchange more efficient. It not only significantly improves the heat dissipation efficiency of the distribution box but also effectively avoids localized heat buildup, creating a suitable temperature environment for the electrical components within each functional compartment and ensuring their stable and reliable operation.

[0057] In one embodiment of this utility model, such as Figure 3As shown, the air inlet 112 and the air outlet 111 are located on the same side of the air filter chamber 11 and are arranged in a staggered manner. In use, this staggered arrangement forces the incoming air to form a diagonal flow path within the air filter chamber 11, extending the contact time between the air and the filter assembly 114. This allows for more thorough air purification, preventing the direct discharge of unfiltered air.

[0058] In summary, the power distribution box filtration and cooling system of this technical solution can effectively dissipate heat inside the power distribution box and prevent external dust from entering the power distribution box.

[0059] In addition, a distribution box 100 is proposed, as shown in the figure. Figure 6 The system includes a distribution box filtration and cooling system 200 as described above and a fire extinguishing component 300; the fire extinguishing component 300 includes a fire extinguisher 301, a temperature control valve 302 and a fire extinguishing nozzle 303. In this embodiment, when the fire extinguishing component 300 is activated, the fan 113 automatically shuts down.

[0060] In this embodiment, when a fire occurs in the distribution box, the temperature control valve 302 monitors the temperature inside the box in real time. When an abnormally high temperature is detected that triggers a fire, the fire extinguisher 301 is immediately activated, and the fan 113 is stopped in conjunction with it. After the fan 113 is turned off, the airflow inside the cabinet 1 stops, preventing the flames from spreading to other functional compartments with the airflow.

[0061] In one embodiment of this utility model, the fire extinguishing component 300 is installed upside down on the top of the fire-fighting battery compartment 14, with its fire extinguishing nozzle facing the battery. This design mainly solves the problem that traditional fire extinguishing devices are unable to quickly and accurately extinguish fires caused by battery short circuits, overheating, etc. The principle is that by using the upside-down installation method, the nozzle of the fire extinguishing component 300 can be aimed at the battery at close range without obstruction. When the temperature control valve senses abnormal high temperature and triggers the fire extinguishing mechanism, the extinguishing medium released by the fire extinguisher can immediately cover the surface of the battery and the surrounding area, providing strong protection for the stable operation of the distribution box.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0063] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0064] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0066] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0067] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A distribution box filtration and cooling system, characterized in that, include: The cabinet contains multiple isolated functional compartments. The functional compartment includes at least one air filter compartment, the top of which is provided with an air outlet and the bottom with an air inlet, and a fan for drawing out gas from the cabinet is installed at the air outlet. The air filter chamber is equipped with filter components arranged sequentially along the vertical direction. Airflow exchange holes are provided on the partition between adjacent functional compartments; The air inlet, filter assembly, air exchange hole and air outlet are connected in sequence to form an airflow channel that runs through multiple functional compartments, and the fan is located at the end of the airflow channel to drive airflow circulation.

2. The distribution box filtration and cooling system according to claim 1, characterized in that: The filter assembly includes a first filter screen and a second filter screen arranged in parallel.

3. The distribution box filtration and cooling system according to claim 2, characterized in that: The first filter and the second filter are arranged sequentially along the airflow direction, and the mesh size of the second filter is smaller than that of the first filter.

4. The distribution box filtration and cooling system according to claim 1, characterized in that: The fan has airflow exchange holes on both its left and right sides, and the fan is positioned closer to one of the airflow exchange holes and further away from the other airflow exchange hole.

5. The distribution box filtration and cooling system according to claim 1, characterized in that: The airflow exchange holes are staggered in position on adjacent partitions, forming a meandering airflow path.

6. The distribution box filtration and cooling system according to claim 1, characterized in that: The air inlet and the air outlet are located on the same side of the air filter chamber and are staggered.

7. A distribution box filtration and cooling system according to any one of claims 1-6, characterized in that: The functional compartments also include a high-voltage compartment, a low-voltage compartment, a fire-fighting battery compartment, and an incoming line compartment; The high-pressure chamber and the low-pressure chamber are located above and below the air filter chamber, respectively.

8. The distribution box filtration and cooling system according to claim 7, characterized in that: The fire-fighting battery compartment is located between the air filter compartment and the inlet compartment.

9. A distribution box, characterized in that: Includes a distribution box filtration and cooling system and a fire extinguishing component as described in any one of claims 7-8; The fan automatically shuts off when the fire extinguishing mechanism is activated.

10. The distribution box according to claim 9, characterized in that: The fire extinguishing component is installed upside down on the top of the fire-fighting battery compartment, with its fire extinguishing nozzle facing the battery.

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