Fresh air positive pressure protection device for power distribution cabinet in conductive dust environment
By using a fresh air positive pressure protection device in the distribution cabinet, and by using a blower and filter to filter dust, combined with baffle and sticky plate design, the problem of electrical short circuits caused by conductive dust is solved, achieving effective dust protection and heat dissipation, and extending the service life of electrical appliances and circuit boards.
Patent Information
- Application Number
- CN202423111230.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In environments with conductive dust, circuit boards inside distribution cabinets are prone to attracting conductive dust, which can lead to short circuits in electrical appliances and damage to the circuit boards. Existing cleaning methods have limited effectiveness and may even shorten the lifespan of the circuit boards.
The system employs a positive pressure protection device for fresh air. It draws in air by creating negative pressure through a blower. The air passes through a filter to remove dust before entering the distribution cabinet, where positive pressure is created to prevent dust from entering. Furthermore, baffles and sticky plates are used to further reduce dust, and combined with heat dissipation, this extends the lifespan of electrical appliances and circuit boards.
It effectively reduces conductive dust entering the distribution cabinet, improves the service life of electrical appliances and circuit boards, enhances heat dissipation, and extends the service life of electrical appliances and circuit boards.
Smart Images
Figure CN223552887U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dust protection devices, and in particular to a positive pressure protection device for fresh air in a conductive dust environment distribution cabinet. Background Technology
[0002] Currently, if a power distribution cabinet is installed in an environment with conductive dust, conductive dust can easily adhere to the circuit boards inside the cabinet. Over time, this can lead to short circuits in the electrical components inside the cabinet, which in turn can cause the circuit boards to burn out.
[0003] To reduce the entry of conductive dust into the distribution cabinet, people protect the circuit boards in the distribution cabinet by installing filter cotton to absorb conductive dust, regularly blowing the internal electrical components of the distribution cabinet, and regularly disassembling and cleaning the circuit boards.
[0004] Regarding the aforementioned technologies, blowing and cleaning can only remove a small amount of conductive dust adhering to the surface of the circuit board. Over time, the dust adhering to the circuit board will still cause short circuits and damage to electrical appliances. Regularly removing the circuit board for cleaning can prevent short circuits and burnout of electrical appliances due to dust, but it can easily damage the circuit board or reduce its service life. Utility Model Content
[0005] To address the aforementioned issues, this application provides a positive pressure protection device for fresh air in a power distribution cabinet for conductive dust environments.
[0006] This application provides a positive pressure protection device for fresh air in a power distribution cabinet for conductive dust environments, employing the following technical solution:
[0007] A positive pressure protection device for fresh air in a conductive dust environment distribution cabinet includes a filter box. The filter box is equipped with a filter element for collecting conductive dust. One end of the filter box is connected to an air inlet pipe, and the other end of the filter box is connected to the distribution cabinet via a connecting pipe. A blower is installed inside the distribution cabinet and is located near the connecting pipe. The distribution cabinet has an exhaust port for exhausting air.
[0008] By adopting the above technical solution, when the blower is turned on, a negative pressure is formed in the air inlet pipe, drawing air into the air inlet pipe. The air passes through the filter element, where conductive dust is collected. After passing through the filter element, the air enters the distribution cabinet through the pipe. The air passes through several electrical components in the distribution cabinet, dissipating heat for the electrical components. The dissipated hot air is discharged to the outside of the distribution cabinet from the exhaust port. By turning on the blower, a positive pressure is formed inside the distribution cabinet, thereby reducing the occurrence of conductive dust entering the distribution cabinet.
[0009] Optionally, the conduit is connected to the lower end of the distribution cabinet, and the exhaust vent is located on the side away from the conduit and at the upper end of the distribution cabinet.
[0010] By adopting the above technical solution, the filtered air enters the distribution cabinet from the lower end. As air continues to enter, it flows towards the exhaust vent, contacts several electrical appliances in the distribution cabinet to dissipate heat, and then the air is discharged from the exhaust vent at the upper end, which has a good heat dissipation effect on several electrical appliances in the distribution cabinet.
[0011] Optionally, a number of baffles are provided at the end of the air inlet pipe away from the filter box, and the baffles are all located inside the air inlet pipe.
[0012] By adopting the above technical solution, several baffles can guide airflow from the gaps between the baffles to the inside of the air inlet pipe, thereby avoiding excessive airflow concentration, improving the filtration effect of the filter element, and thus extending the service life of the electrical appliances and circuit boards inside the distribution cabinet.
[0013] Optionally, all of the baffles are inclined downwards.
[0014] By adopting the above technical solution, when the blower is turned on, the airflow outside the air inlet duct changes under the action of several baffles, causing conductive dust to be blocked or deflected before entering the air inlet duct. As a result, some dust is deposited on the outer wall or baffle of the air inlet duct due to inertia, thereby reducing the amount of conductive dust entering the filter box, thus improving the service life of the filter element, and further improving the service life of the electrical appliances and circuit boards inside the distribution cabinet.
[0015] Optionally, several of the baffles are arranged at equal intervals at an inclined angle at the inlet of the air inlet pipe.
[0016] Optionally, a detachable adhesive plate is provided on the side wall of the power distribution cabinet, and the adhesive plate is positioned directly opposite the air outlet of the blower.
[0017] By adopting the above technical solution, if extremely small conductive dust particles enter the interior of the distribution cabinet, the adhesive plate can absorb the conductive dust particles when the air is blown to the adhesive plate by the blower, thereby reducing the occurrence of extremely small conductive dust particles in the air adhering to electrical appliances or circuit boards, and thus improving the service life of electrical appliances or circuit boards.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] 1. When the blower is turned on, a negative pressure is formed in the air inlet pipe, drawing air into the air inlet pipe. The air passes through the filter, where conductive dust is collected. After passing through the filter, the air enters the distribution cabinet through the pipe. The air passes through several electrical components in the distribution cabinet, dissipating heat for the electrical components. The dissipated hot air is discharged to the outside of the distribution cabinet from the exhaust port. By turning on the blower, a positive pressure is formed inside the distribution cabinet, which can reduce the occurrence of conductive dust entering the distribution cabinet.
[0020] 2. The filtered air enters the distribution cabinet from the bottom. As air continues to enter, it flows towards the exhaust vent, comes into contact with several electrical appliances inside the distribution cabinet to dissipate heat, and then the air is discharged from the exhaust vent at the top. This method has a good heat dissipation effect on the electrical appliances inside the distribution cabinet.
[0021] 3. Several baffles can guide airflow from the gaps between the baffles to the inside of the air inlet duct, thereby avoiding excessive airflow concentration, improving the filtration effect of the filter element, and thus extending the service life of the electrical appliances and circuit boards inside the distribution cabinet.
[0022] 4. When the blower is turned on, the air outside the air inlet duct changes airflow under the action of several baffles, causing conductive dust to be blocked or deflected before entering the air inlet duct. As a result, some dust is deposited on the outer wall or baffle of the air inlet duct due to inertia, thereby reducing the amount of conductive dust entering the filter box, thus improving the service life of the filter element, and thus improving the service life of the electrical appliances and circuit boards inside the distribution cabinet.
[0023] 5. If extremely small conductive dust particles enter the interior of the distribution cabinet, the air blown by the blower to the adhesive plate can trap the conductive dust particles, thereby reducing the occurrence of extremely small conductive dust particles in the air adhering to electrical appliances or circuit boards, and thus improving the service life of electrical appliances or circuit boards. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a positive pressure protection device for fresh air in a conductive dust environment distribution cabinet.
[0025] Figure 2 This is a cross-sectional schematic diagram of a positive pressure protection device for fresh air in a power distribution cabinet for conductive dust environments.
[0026] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.
[0027] Figure 4 yes Figure 2 Enlarged diagram of part B
[0028] Figure 5 yes Figure 2 Enlarged diagram of section C
[0029] Explanation of reference numerals in the attached diagram: 100, power distribution cabinet; 101, exhaust vent; 1, filter box; 11, filter element; 2, air inlet duct; 21, baffle; 3, connecting pipe; 4, blower; 5, adhesive plate. Detailed Implementation
[0030] The present application will be further described in detail below with reference to all the accompanying drawings.
[0031] This application discloses a positive pressure protection device for fresh air in a conductive dust environment distribution cabinet.
[0032] Reference Figure 1 and Figure 2 A positive pressure protection device for fresh air in a conductive dust environment distribution cabinet includes a filter box 1 installed outside the distribution cabinet 100. The filter box 1 is equipped with a filter element 11 for collecting conductive dust. An air inlet pipe 2 is connected to the upper end of the filter box 1, and a through pipe 3 is installed at the lower end of the filter box 1, which is connected to the lower end of the distribution cabinet 100.
[0033] Reference Figure 2 and Figure 3 The distribution cabinet 100 is equipped with a blower 4. The air inlet of the blower 4 faces the pipe 3, and the air outlet 101 of the blower 4 faces the interior of the distribution cabinet 100.
[0034] Reference Figure 2 and Figure 4 The distribution cabinet 100 is also provided with an exhaust vent 101 for ventilation. When the blower 4 is turned on, the air passes through the filter element 11, and the conductive dust is collected in the filter element 11. After passing through the filter element 11, the air enters the distribution cabinet 100 through the pipe 3. The air passes through several electrical appliances in the distribution cabinet 100 to dissipate heat for the appliances. The hot air after dissipation is discharged from the exhaust vent 101 to the outside of the distribution cabinet 100. By turning on the blower 4, a positive pressure is formed inside the distribution cabinet 100, which can reduce the occurrence of conductive dust entering the distribution cabinet 100.
[0035] In this embodiment, the blower 4 is preferably a positive pressure blower, which can generate positive pressure within the distribution cabinet 100.
[0036] Reference Figure 2 and Figure 5 A number of baffles 21 are arranged at the end of the air inlet duct 2 away from the filter box 1. The baffles 21 are all set inside the air inlet duct 2 and are arranged at equal intervals at the opening of the air inlet duct 2. The baffles 21 are all inclined downwards. When the blower 4 is turned on, the air inlet duct 2 forms a negative pressure. The air outside the opening of the air inlet duct 2 changes its airflow under the action of the baffles 21. The conductive dust in the air is blocked or deflected before entering the air inlet duct 2. As a result, some of the dust is deposited on the outer wall of the air inlet duct 2 or on the baffles 21 due to inertia. This reduces the amount of conductive dust entering the filter box 1. The baffles 21 can guide the airflow from the gaps between the baffles 21 to the inside of the air inlet duct 2, thereby avoiding excessive concentration of airflow.
[0037] Reference Figure 2 As air and some dust enter the air inlet duct 2, they then enter the filter element 11, where conductive dust is collected.
[0038] In this embodiment, the filter element 11 is preferably a cylindrical pleated filter element, but other filter elements 11 can also be used to filter conductive dust.
[0039] In this embodiment, the cylindrical pleated filter element has a filtration accuracy greater than 0.3 micrometers.
[0040] Reference Figure 2 As the blower 4 blows air, air flows from the duct 3 into the interior of the distribution cabinet 100. The duct 3 is connected to the lower end of the distribution cabinet 100. A detachable adhesive plate 5 is attached to the side wall of the distribution cabinet 100. The adhesive plate 5 is positioned opposite the air outlet of the blower 4. If the air entering the distribution cabinet 100 contains fine dust particles smaller than 0.3 microns, when it comes into contact with the adhesive plate 5, it will be adsorbed onto the outer surface of the adhesive plate 5 due to its stickiness. This reduces the contact between fine dust particles and electrical appliances inside the distribution cabinet 100, thereby improving the lifespan of electrical appliances and circuit boards inside the distribution cabinet 100.
[0041] Reference Figure 2 and Figure 4 The exhaust vent 101 is located on the side away from the conduit 3. The exhaust vent 101 is located at the upper end of the distribution cabinet 100. Air flows towards the exhaust vent 101. When the air passes over the electrical appliances, it blows the heat emitted by the electrical appliances and circuit boards toward the exhaust vent 101 and out to the outside of the distribution cabinet 100, thereby achieving the effect of heat dissipation for the electrical appliances.
[0042] Reference Figure 2 and Figure 4 As the blower 4 continuously blows air into the power distribution cabinet 100, a positive pressure is formed inside the power distribution cabinet 100, which reduces the occurrence of conductive dust entering the power distribution cabinet 100 from the exhaust port 101, and further improves the lifespan of the electrical appliances and circuit boards inside the power distribution cabinet 100.
[0043] The implementation principle of the positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to this application embodiment is as follows: The blower 4 is turned on to draw air into the inlet duct 2. Under the action of several baffles 21, the airflow is guided to flow from the gaps between the baffles 21 into the interior of the inlet duct 2, thereby preventing excessive airflow concentration. Some conductive dust is deposited on the outer wall of the inlet duct 2 or on the baffles 21, further reducing the amount of conductive dust entering the filter box 1. Then, the air carrying some conductive dust passes through the filter element 11. Conductive dust is collected in the filter element 11. As the air continues to flow, the fine dust is adsorbed by the sticky plate 5. The air flows towards the exhaust port 101, blowing the heat emitted by the electrical appliances out of the exhaust port 101, thereby achieving the effect of heat dissipation for the electrical appliances. As the blower 4 continuously blows air into the distribution cabinet 100, a positive pressure is formed inside the distribution cabinet 100, which can reduce the occurrence of conductive dust entering the distribution cabinet 100 from the exhaust port 101, and further improve the life of the electrical appliances and circuit boards inside the distribution cabinet 100.
[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A positive pressure protection device for fresh air in a conductive dust environment distribution cabinet, comprising a filter box (1), characterized in that: The filter box (1) is equipped with a filter element (11) for collecting conductive dust. One end of the filter box (1) is connected to an air inlet pipe (2), and the other end of the filter box (1) is connected to a connecting pipe (3) between it and the power distribution cabinet (100). The power distribution cabinet (100) is equipped with a blower (4), which is located near the connecting pipe (3). The power distribution cabinet (100) is provided with an exhaust port (101) for exhausting air.
2. The positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to claim 1, characterized in that: The conduit (3) is connected to the lower end of the distribution cabinet (100), the exhaust port (101) is located on the side away from the conduit (3), and the exhaust port (101) is located at the upper end of the distribution cabinet (100).
3. The positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to claim 1, characterized in that: The air inlet pipe (2) is provided with several baffles (21) at the end away from the filter box (1), and the baffles (21) are all located inside the air inlet pipe (2).
4. The positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to claim 3, characterized in that: Several of the baffles (21) are inclined downwards.
5. The positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to claim 4, characterized in that: Several baffles (21) are arranged at equal intervals at an incline at the opening of the air inlet pipe (2).
6. The positive pressure protection device for fresh air in a conductive dust environment distribution cabinet according to claim 1, characterized in that: A detachable adhesive plate (5) is detachably connected to the side wall of the power distribution cabinet (100), and the adhesive plate (5) is positioned directly opposite the air outlet of the blower (4).