A dust filter device and a high-power charging pile

Abstract

This utility model provides a dust filter device, belonging to the field of charging pile technology, including: a cyclone dust collector, which includes a dust collector shell, a negative pressure suction pipe, and at least one centrifugal separation unit; the dust collector shell includes an independent negative pressure chamber, an air inlet chamber, and a dust collection chamber, and the negative pressure suction pipe is connected to the interior of the negative pressure chamber; the centrifugal separation unit includes an air inlet pipe and an air outlet pipe, the inlet of the air inlet pipe is connected to the interior of the air inlet chamber, the outlet of the air inlet pipe is connected to the interior of the dust collection chamber, the inlet portion of the exhaust pipe extends into the inlet of the air inlet pipe, and the outlet of the exhaust pipe is connected to the interior of the negative pressure chamber, and a spiral guide vane is provided in the annular gap between the inner wall of the air inlet pipe and the outer wall of the exhaust pipe; the beneficial effects of this utility model are: the cyclone dust collector is not easily blocked by dust when maintaining a large air intake, and can effectively block conductive metal dust, eliminating the risk of short circuit caused by the accumulation of metal dust.

Description

Technical Field

[0001] This utility model belongs to the field of charging pile technology, and relates to a dust filter device and a high-power charging pile. Background Technology

[0002] A charging pile is a dedicated charging device that provides electrical replenishment for new energy vehicles, functioning similarly to a gas pump at a traditional gas station. Among the various performance parameters of a charging pile, charging power directly affects charging speed and user experience. Higher charging power results in shorter charging time. High-power charging piles can effectively reduce user waiting time, while the heat dissipation performance of the charging pile is a key factor limiting charging power. Existing charging piles typically use air cooling or liquid cooling. Air cooling offers advantages such as low cost, ease of large-scale deployment, and no risk of cavitation or leakage.

[0003] Air intake volume is a key factor affecting air-cooling efficiency; insufficient air intake significantly reduces cooling performance. Since outside air contains dust, the air entering the air-cooling system needs to be filtered. However, in some areas with high dust levels, the filtration system is easily clogged by dust while maintaining a large air intake, leading to a significant reduction in airflow and a substantial increase in air resistance, severely impacting cooling efficiency. Furthermore, conductive metallic dust particles in the air can easily pass through existing filtration systems. These particles can enter the charging station and adhere to the circuit board surface, causing short circuits.

[0004] Therefore, existing filtration systems are easily clogged by dust when maintaining a large air intake, leading to increased wind resistance and reduced air intake. They are also difficult to effectively block conductive metal dust, posing a risk of short circuits. Thus, there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a dust filter device and a high-power charging pile.

[0006] The objective of this utility model can be achieved through the following technical solution: a dust filter device, comprising:

[0007] A cyclone dust collector, comprising a dust collector housing, a negative pressure suction pipe, and at least one centrifugal separation unit;

[0008] The dust collector housing includes a negative pressure chamber, an air inlet chamber, and a dust collection chamber that are independent of each other. The negative pressure chamber and the dust collection chamber are located above and below the air inlet chamber, respectively. The negative pressure suction pipe is connected to the interior of the negative pressure chamber.

[0009] The centrifugal separation unit includes an air inlet pipe and an exhaust pipe. The inlet of the air inlet pipe is connected to the interior of the air inlet chamber, and the outlet of the air inlet pipe is connected to the interior of the dust collection chamber. The part of the exhaust pipe with an inlet extends into the inlet of the air inlet pipe. The inlet of the exhaust pipe is connected to the interior of the air inlet pipe, and the outlet of the exhaust pipe is connected to the interior of the negative pressure chamber. A spiral guide vane is provided in the annular gap between the inner wall of the air inlet pipe and the outer wall of the exhaust pipe.

[0010] Preferably, the end of the air intake pipe near the dust collection chamber is configured as a conical cavity structure with a diameter that gradually decreases along the direction of the dust collection chamber.

[0011] Preferably, the annular gap between the inner wall of the intake pipe and the outer wall of the exhaust pipe forms a spiral centrifugal flow channel through the spiral guide vane.

[0012] Preferably, the dust collector housing is provided with an upper partition and a lower partition. The upper partition is located between the negative pressure chamber and the air inlet chamber and isolates the negative pressure chamber from the air inlet chamber. The lower partition is located between the air inlet chamber and the dust collection chamber and isolates the air inlet chamber from the dust collection chamber. The air inlet pipe passes through the lower partition, and the exhaust pipe passes through the upper partition.

[0013] Preferably, the dust collection chamber and the air intake chamber are detachably connected.

[0014] Preferably, the number of centrifugal separation units is multiple and they are distributed in an array.

[0015] Preferably, the bottom of the dust collection bin is provided with a number of magnetic components arranged in an array.

[0016] Preferably, the negative pressure chamber and / or the air intake chamber are equipped with differential pressure sensors.

[0017] Preferably, it also includes a filter channel, the inlet of which is connected to the negative pressure suction tube, and the filter channel is provided with a two-stage fine filtration module.

[0018] A high-power charging pile includes the dustproof filter device and an air-cooling module, with the outlet of the filter channel connected to the air-cooling module.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. Cyclone dust collectors are not easily clogged by dust while maintaining a large air intake volume, and can effectively block conductive metal dust, eliminating the risk of short circuits caused by the accumulation of metal dust.

[0021] 2. The lower end of the air inlet pipe has a conical cavity structure. This design allows the rotation radius of the swirling airflow to gradually decrease. According to the conservation of angular momentum, the rotation speed of the airflow will increase sharply, thereby generating greater centrifugal force, which separates even finer particles. At the same time, it ensures that the separated particles are guided to the dust collection bin.

[0022] 3. The secondary fine filtration module is preferably one or more of filter cotton, filter screen and electrostatic dust removal. Adding secondary filtration after cyclone dust removal can further remove fine dust, thereby improving the air filtration accuracy. Attached Figure Description

[0023] Figure 1 This is a top view of the cyclone dust collector of this utility model.

[0024] Figure 2 for Figure 1 A schematic diagram of the AA cross-section.

[0025] Figure 3 This is a half-sectional schematic diagram of the dust filter device of this utility model.

[0026] Figure 4 This is a partial cross-sectional schematic diagram of the cyclone dust collector of this utility model.

[0027] Figure 5 This is a schematic diagram of the internal structure of the high-power charging pile of this utility model.

[0028] Figure 6 This is a schematic diagram showing the connection between the dust filter device and the air-cooling module of this utility model.

[0029] In the diagram, 100 is the cyclone dust collector; 110 is the dust collector housing; 111 is the negative pressure chamber; 112 is the air inlet chamber; 113 is the dust collection chamber; 114 is the upper partition; 115 is the lower partition; 120 is the negative pressure suction pipe; 130 is the centrifugal separation unit; 131 is the air inlet pipe; 132 is the exhaust pipe; 133 is the spiral guide vane; 200 is the filter channel; and 300 is the air-cooled module. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] like Figures 1 to 6 As shown, a dust filter device includes:

[0032] Cyclone dust collector 100 includes a dust collector housing 110, a negative pressure suction pipe 120, and at least one centrifugal separation unit 130.

[0033] The dust collector housing 110 includes a negative pressure chamber 111, an air inlet chamber 112, and a dust collection chamber 113, which are independent of each other. The negative pressure chamber 111 and the dust collection chamber 113 are located above and below the air inlet chamber 112, respectively. The negative pressure suction pipe 120 is connected to the interior of the negative pressure chamber 111.

[0034] The centrifugal separation unit 130 includes an air inlet pipe 131 and an exhaust pipe 132. The inlet of the air inlet pipe 131 is connected to the inside of the air inlet chamber 112, and the outlet of the air inlet pipe 131 is connected to the inside of the dust collection chamber 113. The part of the exhaust pipe 132 with an inlet extends into the inlet of the air inlet pipe 131. The inlet of the exhaust pipe 132 is connected to the inside of the air inlet pipe 131, and the outlet of the exhaust pipe 132 is connected to the inside of the negative pressure chamber 111. A spiral guide vane 133 is provided in the annular gap between the inner wall of the air inlet pipe 131 and the outer wall of the exhaust pipe 132.

[0035] In the cyclone dust collector 100, the negative pressure chamber 111, the air inlet chamber 112, and the dust collection chamber 113 are arranged sequentially from top to bottom and isolated from each other. The wall of the air inlet chamber 112 has an air inlet (micropore), allowing external air to enter the air inlet chamber 112. The negative pressure suction pipe 120 extends upward from the bottom of the dust collector housing 110 into the negative pressure chamber 111. The top end of the negative pressure suction pipe 120 is connected to the negative pressure chamber 111, and the bottom end of the negative pressure suction pipe 120 is connected to the inlet of the filter channel 200. A negative pressure generating source (such as a vacuum pump or induced draft fan) can be installed in the filter channel 200 to create negative pressure in the negative pressure suction pipe 120 and the negative pressure chamber 111. Since the top end of the exhaust pipe 132 is connected to the negative pressure chamber 111, a negative pressure area is formed at the lower end of the exhaust pipe 132 (located in the air inlet pipe 131), driving the airflow. The spiral guide vane 133 is arranged along a spiral involute, which can effectively guide the airflow between the intake pipe 131 and the exhaust pipe 132 to rotate. The centrifugal force during rotation separates the dust. The air after removing the dust can enter the negative pressure chamber 111 through the exhaust pipe 132 and enter the filter channel 200 through the negative pressure suction pipe 120. The dust falls into the dust collection chamber 113.

[0036] The working mechanism of the cyclone dust collector 100 is as follows: External air enters the inlet chamber 112 through the micropores in the wall. Due to the negative pressure suction at the lower end of the exhaust pipe 132, the air in the inlet chamber 112 first enters the annular gap between the inlet pipe 131 and the exhaust pipe 132 through the inlet (upper port) of the inlet pipe 131. Under the guidance of the spiral guide vane 133, the airflow rotates and flows towards the dust collection chamber 113. Under the action of strong centrifugal force, the denser solid particles (dust) are thrown towards the inner wall of the inlet pipe 131. After colliding with the inner wall, the dust loses kinetic energy and slides down into the dust collection chamber 113 under the action of gravity, eventually falling into the dust collection chamber 113 at the bottom, thereby separating the denser solid particles from the gas. Clean air enters the negative pressure chamber 111 upward through the inlet (lower port) of the exhaust pipe 132 under negative pressure, and enters the filter channel 200 through the negative pressure suction pipe 120.

[0037] The dust filter is used to filter the air to prevent dust (especially metal dust) from entering the charging module through the air-cooled module 300 and causing a short circuit. The cyclone dust collector 100 in the dust filter uses centrifugal force to separate dust particles. Dust-laden air enters the cyclone dust collector 100 and forms a high-speed rotating airflow. The dust particles are separated from the air due to centrifugal force, and the clean air enters the industrial air conditioner of the air-cooled module 300. Since the cyclone dust collector 100 does not experience a decrease in air intake due to dust blockage during operation, it can ensure extremely high air-cooling efficiency.

[0038] It's important to note that a prerequisite for high-power charging is a highly efficient and reliable cooling system. The efficiency of the air-cooled module 300 directly depends on the airflow and temperature. However, in industrial areas, mining areas, and dusty regions, high-dust air can easily clog the filtration system, causing a sharp drop in airflow and reducing the effectiveness of air cooling. Reducing airflow to protect the filtration system will also limit power output due to insufficient airflow. Therefore, to achieve sustainable high-power charging, the air-cooled module 300 must be able to continuously provide a large flow of cooling air under high-dust conditions while maintaining unobstructed airflow to ensure that its heat dissipation performance does not degrade.

[0039] This device utilizes the principle of centrifugal separation. After the dust-laden airflow enters the inlet pipe 131, it forms a rotating airflow under the guidance of the spiral guide vane 133. Centrifugal force is used to throw the dust against the pipe wall and settle it into the dust collection chamber 113, preventing the dust from entering the negative pressure chamber 111. The efficient centrifugal separation significantly reduces the amount of dust entering subsequent channels, avoiding blockages caused by high dust content, thereby maintaining a large air intake. In addition, centrifugal separation can effectively trap metal dust (such as iron filings) and prevent it from entering the charging pile.

[0040] Based on the above implementation, the end of the air intake pipe 131 near the dust collection chamber 113 is configured as a conical cavity structure with a diameter that gradually decreases in the direction of the dust collection chamber 113.

[0041] The lower end of the air inlet pipe 131 has a conical cavity structure. This design allows the rotation radius of the rotating airflow to gradually decrease. According to the conservation of angular momentum, the rotation speed of the airflow will increase sharply, thereby generating a greater centrifugal force, which separates even finer particles. At the same time, it ensures that the separated particles are guided to the dust collection bin 113.

[0042] Based on the above implementation, the annular gap between the inner wall of the intake pipe 131 and the outer wall of the exhaust pipe 132 forms a spiral centrifugal flow channel through the spiral guide vane 133.

[0043] The spiral guide vane 133 guides the airflow to form a stable spiral motion, thereby using centrifugal force to throw the dust towards the inner wall of the air intake pipe 131.

[0044] like Figures 1 to 4 As shown, based on the above embodiment, the dust collector housing 110 is provided with an upper partition 114 and a lower partition 115. The upper partition 114 is located between the negative pressure chamber 111 and the air inlet chamber 112 and isolates the negative pressure chamber 111 from the air inlet chamber 112. The lower partition 115 is located between the air inlet chamber 112 and the dust collection chamber 113 and isolates the air inlet chamber 112 from the dust collection chamber 113. The air inlet pipe 131 passes through the lower partition 115, and the exhaust pipe 132 passes through the upper partition 114.

[0045] Based on the above implementation method, the dust collection chamber 113 and the air inlet chamber 112 are detachably connected. The detachable design allows for quick replacement or cleaning of the dust collection chamber 113. When cleaning the dust in the dust collection chamber 113, it is not necessary to open the entire cyclone dust collector 100; only the dust collection chamber 113 needs to be disassembled.

[0046] Based on the above implementation method, the number of centrifugal separation units 130 is multiple and they are arranged in an array. Multiple centrifugal separation units 130 work together to improve the overall centrifugal separation capacity. The array-type centrifugal separation units 130 are suitable for scenarios with large air volumes and high concentrations of dust.

[0047] like Figure 1 As shown, based on the above embodiment, the bottom of the dust collection chamber 113 is provided with several magnetic components arranged in an array. These magnetic components can adsorb metal dust, ensuring that the metal dust separated from the air is bound by the magnetic force of the components, preventing the centrifugally separated metal dust from re-mixing with the filtered clean air, effectively eliminating the possibility of secondary pollution. Furthermore, the adsorption of metal dust by the magnetic components facilitates subsequent recycling and processing.

[0048] Based on the above implementation method, the negative pressure chamber 111 and / or the air intake chamber 112 are equipped with differential pressure sensors. The differential pressure sensors monitor changes in airflow resistance, reflecting dust removal efficiency or blockage status. By using differential pressure data, it is determined whether dust removal or maintenance is required, thus avoiding sudden failures and providing data support for automated operation and maintenance.

[0049] like Figure 1 , Figure 2 As shown, based on the above-described embodiments, a filter channel 200 is also included. The inlet of the filter channel 200 is connected to the negative pressure suction pipe 120, and the filter channel 200 is equipped with a two-stage fine filtration module.

[0050] The secondary fine filtration module is preferably one or more of filter cotton, filter screen and electrostatic dust removal. Adding a secondary filtration after cyclone dust removal can further remove fine dust, thereby improving the air filtration accuracy.

[0051] like Figures 1 to 6 As shown, based on the above embodiments, a high-power charging pile includes a dust filter device and an air-cooling module 300, with the outlet of the filter channel 200 connected to the air-cooling module 300.

[0052] In the specific air-cooling process: outside air passes through the cyclone dust collector 100 to remove dust. Since the cyclone dust collector 100 has no filter clogging problem, it can achieve a high-flow-rate air filtration effect, which is extremely important. The purified air enters the industrial air conditioner of the air-cooling module 300, where the industrial air conditioner cools the air to the set temperature and sends the cold air into the charging module through the air duct.

[0053] This charging station can achieve high-power charging based on air cooling. The cyclone dust collector 100 can efficiently remove dust while maintaining a large airflow. The airflow will not decrease throughout the entire service life, so the air cooling efficiency will not decrease. The filtered air is cooled by the industrial air conditioner and then directly introduced into the charging module for heat exchange, thereby achieving the effect of air cooling.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A dust filter device, characterized in that, include: Cyclone dust collector (100), the cyclone dust collector (100) includes a dust collector housing (110), a negative pressure suction pipe (120) and at least one centrifugal separation unit (130); The dust collector housing (110) includes an independent negative pressure chamber (111), an air inlet chamber (112), and a dust collection chamber (113). The negative pressure chamber (111) and the dust collection chamber (113) are located above and below the air inlet chamber (112), respectively. The negative pressure suction pipe (120) is connected to the interior of the negative pressure chamber (111). The centrifugal separation unit (130) includes an air inlet pipe (131) and an exhaust pipe (132). The inlet of the air inlet pipe (131) is connected to the interior of the air inlet chamber (112), and the outlet of the air inlet pipe (131) is connected to the interior of the dust collection chamber (113). The part of the exhaust pipe (132) with an inlet extends into the inlet of the air inlet pipe (131). The inlet of the exhaust pipe (132) is connected to the interior of the air inlet pipe (131), and the outlet of the exhaust pipe (132) is connected to the interior of the negative pressure chamber (111). A spiral guide vane (133) is provided in the annular gap between the inner wall of the air inlet pipe (131) and the outer wall of the exhaust pipe (132).

2. The dust filter device as described in claim 1, characterized in that: The end of the air intake pipe (131) near the dust collection chamber (113) is configured as a conical cavity structure with a gradually decreasing diameter along the direction toward the dust collection chamber (113).

3. A dust filter device as described in claim 1 or 2, characterized in that: The annular gap between the inner wall of the intake pipe (131) and the outer wall of the exhaust pipe (132) forms a spiral centrifugal flow channel through the spiral guide vane (133).

4. The dust filter device as described in claim 1, characterized in that: The dust collector housing (110) is provided with an upper partition (114) and a lower partition (115). The upper partition (114) is located between the negative pressure chamber (111) and the air inlet chamber (112) and isolates the negative pressure chamber (111) from the air inlet chamber (112). The lower partition (115) is located between the air inlet chamber (112) and the dust collection chamber (113) and isolates the air inlet chamber (112) from the dust collection chamber (113). The air inlet pipe (131) passes through the lower partition (115), and the exhaust pipe (132) passes through the upper partition (114).

5. A dust filter device as described in claim 1 or 4, characterized in that: The dust collection chamber (113) and the air intake chamber (112) are detachably connected.

6. The dust filter device as described in claim 1, characterized in that: The number of centrifugal separation units (130) is multiple and they are distributed in an array.

7. The dust filter device as described in claim 5, characterized in that: The bottom of the dust collection chamber (113) is provided with several magnetic components arranged in an array.

8. The dust filter device as described in claim 1, characterized in that: The negative pressure chamber (111) and / or the air intake chamber (112) are equipped with differential pressure sensors.

9. A dust filter device as described in claim 1, characterized in that: It also includes a filter channel (200), the inlet of which is connected to the negative pressure suction tube (120), and the filter channel (200) is provided with a two-stage fine filtration module.

10. A high-power charging pile, characterized in that, The dust filter device as described in any one of claims 1 to 9 further includes an air-cooled module (300), the outlet of the filter channel (200) being connected to the air-cooled module (300).

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