Noise reduction device for charging pile

Abstract

The invention discloses a charging pile noise reduction device, and particularly relates to the technical field of charging pile noise reduction, the charging pile noise reduction device comprises a charging pile body, a noise reduction assembly, a drainage assembly, an adjusting assembly and a fan set, the noise reduction assembly comprises fixing pieces arranged on the two sides of the charging pile body, and each fixing piece is internally provided with a plurality of first sound absorption layers; a plurality of second sound absorbing layers are alternately arranged between every two adjacent first sound absorbing layers; the flow guide assembly comprises a flow guide part arranged at one end of the fixing part, the flow guide part pumps air in the fixing part on the opposite side into the fixing part on the same side as the flow guide part through negative pressure, and the adjusting assembly comprises a connecting part arranged at one end of the multiple second sound absorption layers and further comprises a driving part arranged on one side of the fixing part. According to the charging pile, the two noise reduction assemblies are matched with each other to form two-way airflow circulation, the noise reduction effect is improved, and meanwhile the heat dissipation effect of the charging pile can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile noise reduction, and more specifically, to a charging pile noise reduction device. Background Art

[0002] With the continuous growth of new energy vehicle ownership, the demand for charging piles is also increasing. In order to meet the demand for fast charging, the power of charging piles is constantly increasing, but with it comes the intensification of noise problems. The noise of charging piles mainly comes from components such as cooling fans, transformers and inductors, especially the air flow noise generated by cooling fans when running at high power. Therefore, eliminating the noise generated by air flow is an important means to solve the noise problem of charging piles.

[0003] For example, the Chinese patent with application number 202010845392.7 discloses a noise reduction device, method and outdoor DC charging pile using the device. The patent weakens the airflow through the first-level sieve plate and then enters the second-level concave hole plate, causing collision and buffering. The sound waves interfere with each other and reduce the airflow velocity. At the same time, sound-absorbing cotton is attached to the inner wall of the buffer. The airflow is weakened again and enters the third-level sieve plate for further weakening before entering the fan. The weakened airflow is sucked into the fan through exhaust and arranged to the air outlet buffer. Similarly, after passing through the air outlet buffer, the airflow is weakened by the buffering sound wave interference, and then further weakened by the air outlet device to reduce the air noise. Although the device can reduce noise, it affects the heat dissipation inside the charging pile by reducing the airflow rate, thereby increasing the heat dissipation pressure inside the charging pile.

[0004] For example, the Chinese patent with application number 202110782017.7 discloses a charging pile noise reduction device, including a shock filter box connected to the outside of the heat dissipation fan, a fan housing and a noise reduction body are arranged in the shock filter box, and the noise reduction body includes a cone noise reduction device, and a temperature-sensitive autonomously deformable bracket inside the cone noise reduction device can autonomously adjust the angle between the cone surface and the bracket according to the temperature at different positions in the noise reduction body, thereby reducing the blocking effect of the cone noise reduction device on hot air. However, the addition of the shock filter box not only increases the footprint of the charging pile, but also increases the path for the hot air to be discharged from the charging pile. At the same time, the cone will also affect the airflow speed, thereby affecting the heat dissipation inside the charging pile.

[0005] In summary, whether it is reducing noise by weakening the airflow or by setting up a soundproof cover or shock filter box, the air flow speed will be reduced. Although it can achieve noise reduction, it also affects the speed at which hot air flows out of the charging pile, which will cause the heat dissipation pressure of the charging pile to increase during noise reduction.

[0006] Therefore, the present invention proposes a charging pile noise reduction device to solve the above problems. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a charging pile noise reduction device to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a charging pile noise reduction device, comprising: a noise reduction component, the noise reduction component comprising fixing parts arranged on both sides of the charging pile body, each of the fixing parts being provided with a plurality of first sound absorbing layers, and a plurality of second sound absorbing layers being alternately provided between each adjacent two first sound absorbing layers; a drainage component, the drainage component comprising a guide member arranged at one end of the fixing part, the guide member drawing the air inside the fixing part on the opposite side to the inside of the fixing part on the same side as the guide member through negative pressure, and the flow rate of the air at the air outlet of the guide member is greater than the flow rate of the air after passing through the first sound absorbing layer and the second sound absorbing layer; an adjustment component, the adjustment component comprising a connecting part arranged at one end of the plurality of second sound absorbing layers, the adjustment component also comprising a driving part arranged on one side of the fixing part, the driving part being able to rotate the plurality of second sound absorbing layers through the connecting part.

[0009] Preferably, the noise reduction component is at least one group, each group of the noise reduction components is two and are respectively arranged on both sides of the charging pile body, and the two noise reduction components in each group are centrally symmetrical.

[0010] Preferably, one end of each of the fixing members away from the air guide member is fixedly connected to a ventilation pipe, and one end of the ventilation pipe away from the fixing member is fixedly connected to the air inlet end of the air guide member on the fixing member symmetrically distributed around the center.

[0011] Preferably, each of the first sound-absorbing layers is rotatably connected internally with at least one first rotating shaft, each of the first rotating shaft is fixedly connected to one end of the corresponding second sound-absorbing layer close to the first sound-absorbing layer, a fixing rod is fixedly connected to the side wall of the first rotating shaft, and one end of the fixing rod away from the first rotating shaft is fixedly connected to the connecting piece.

[0012] Preferably, the driving member includes a second rotating shaft rotatably connected to one side of the fixing member, the second rotating shaft is two and is respectively arranged at both ends of the fixing member, pulleys are fixedly connected to the outer walls of the two second rotating shafts, the two pulleys are jointly engaged with the connecting member, and a cable reel is fixedly connected to the second rotating shaft near one end of the ventilation pipe.

[0013] Preferably, an adjustment rope is wound on the side wall of the cable reel, and one end of the adjustment rope is fixedly connected to an adjustment ball.

[0014] Preferably, each of the fixing parts is fixedly connected to a connecting pipe at one end close to the ventilation pipe, a through hole connected to the ventilation pipe is provided inside the connecting pipe, a sliding groove is provided inside the connecting pipe, the adjusting ball is slidably connected to the sliding groove, an elastic part is provided inside the sliding groove, one end of the elastic part is fixedly connected to one end of the sliding groove close to the through hole, and the other end of the elastic part is fixedly connected to the adjusting ball.

[0015] Preferably, a dustproof window cover is fixedly connected to one end of the fixing member close to the side wall of the charging pile body.

[0016] Preferably, there are multiple fan groups, and the air outlet end of each fan group is fixedly connected to an end of the corresponding fixing member away from the side wall of the charging pile body.

[0017] Preferably, the fixing member is provided with an escape hole through which the adjustment rope passes.

[0018] Technical effects and advantages of the present invention: 1. The present invention forms a noise maze by alternately arranging multiple layers of sound-absorbing panels, thereby performing multi-level noise reduction on the noise generated by the charging pile, thereby preventing the noise from penetrating the sound-absorbing device and causing the problem of poor noise reduction effect of the charging pile.

[0019] 2. The present invention increases the velocity of the local airflow inside the noise reduction component by arranging a flow guide, compensates for the velocity of the airflow blocked by the sound absorbing board, increases the velocity of the airflow after noise reduction, and thus improves the heat dissipation efficiency of the charging pile.

[0020] 3. The present invention forms a two-way airflow circulation through the cooperation between the two noise reduction components, further increasing the flow rate of the airflow after noise reduction, preventing the problem of slow airflow rate and poor heat dissipation effect caused by the obstruction of the sound-absorbing panel, and further improving the heat dissipation effect of the charging pile during the noise reduction process.

[0021] 4. The present invention guides the direction of the airflow passing through the sound absorbing board by rotating the sound absorbing board, thereby further increasing the heat dissipation efficiency of the charging pile body. At the same time, the angle of the sound absorbing board is adjusted according to different heat dissipation requirements to balance noise reduction and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the charging pile body of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure inside the main body of the charging pile of the present invention.

[0024] Figure 3 It is a schematic diagram of the overall structure explosion of the noise reduction component of the present invention.

[0025] Figure 4 For the present invention Figure 3 A-section structure enlarged schematic diagram.

[0026] Figure 5 It is a cross-sectional view of the noise reduction component of the present invention.

[0027] Figure 6 It is a schematic diagram of wind direction flow of the present invention.

[0028] Figure 7 This is a cross-sectional view of the connecting pipe structure of the present invention.

[0029] Figure 8 It is a cross-sectional view of the noise reduction component of the present invention in the flow guiding state.

[0030] The accompanying drawings are marked as follows: 1. Charging pile body; 2. Noise reduction component; 21. Fixing part; 22. First sound-absorbing layer; 23. Second sound-absorbing layer; 24. First rotating shaft; 241. Fixing rod; 25. Dustproof window cover; 3. Drainage component; 31. Guide member; 32. Ventilation duct; 4. Adjustment component; 41. Connecting part; 42. Driving part; 43. Second rotating shaft; 431. Pulley; 432. Cable reel; 44. Adjustment rope; 45. Adjustment ball; 46. Connecting pipe; 461. Elastic member; 5. Fan assembly. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figures 1 to 8 As shown, a charging pile noise reduction device according to an embodiment of the present invention comprises a noise reduction component 2, a drainage component 3, an adjustment component 4 and a fan group 5. The noise reduction component 2 comprises fixing members 21 arranged on both sides of the charging pile body 1, a plurality of first sound absorbing layers 22 are arranged inside each fixing member 21, and a plurality of second sound absorbing layers 23 are alternately arranged between each two adjacent first sound absorbing layers 22; the drainage component 3 comprises a guide member 31 arranged at one end of the fixing member 21, and the guide member 31 draws the air inside the fixing member 21 on the opposite side to the fixing member 21 on the same side as the guide member 31 through negative pressure. The air flow velocity at the air outlet of the guide member 31 is greater than the flow velocity of the air after passing through the first sound absorbing layer 22 and the second sound absorbing layer 23; the adjustment component 4 includes a connecting member 41 arranged at one end of the plurality of second sound absorbing layers 23, and the adjustment component 4 also includes a driving member 42 arranged on one side of the fixing member 21, and the driving member 42 can rotate the plurality of second sound absorbing layers 23 through the connecting member 41; wherein the guide member 31 is a silent fan, which is used to accelerate the local airflow, and the guide member 31 compensates for the weakening of the air flow velocity by the first sound absorbing layer 22 and the second sound absorbing layer 23 by accelerating the local airflow.

[0033] See also Figure 2 As shown, the noise reduction components 2 are at least one group, each group consists of two components and are respectively arranged on both sides of the charging pile body 1, and the two noise reduction components 2 in each group are centrally symmetrical.

[0034] See also Figure 2 and Figure 6 As shown, one end of each fixing member 21 away from the guide member 31 is fixedly connected to a ventilation pipe 32, and one end of the ventilation pipe 32 away from the fixing member 21 is fixedly connected to the air inlet end of the guide member 31 on the fixing member 21 symmetrically distributed around the center.

[0035] See also Figure 3 and Figure 5 As shown, each first sound absorbing layer 22 is rotatably connected inside with at least one first rotating shaft 24, each first rotating shaft 24 is fixedly connected to one end of the corresponding second sound absorbing layer 23 close to the first sound absorbing layer 22, a fixing rod 241 is fixedly connected to the side wall of the first rotating shaft 24, and one end of the fixing rod 241 away from the first rotating shaft 24 is fixedly connected to the connecting member 41.

[0036] See also Figure 4 and Figure 5 As shown, the driving member 42 includes a second rotating shaft 43 rotatably connected to one side of the fixing member 21. There are two second rotating shafts 43 and they are respectively arranged at both ends of the fixing member 21. Pulleys 431 are fixedly connected to the outer walls of the two second rotating shafts 43. The two pulleys 431 are meshed with the connecting member 41 together. A winding reel 432 is fixedly connected to the second rotating shaft 43 near one end of the ventilation pipe 32.

[0037] See also Figure 4 As shown, an adjustment rope 44 is wound on the side wall of the winding drum 432, and one end of the adjustment rope 44 is fixedly connected to an adjustment ball 45; Figure 7 As shown, one end of each fixing member 21 close to the ventilation pipe 32 is fixedly connected to a connecting pipe 46, a through hole connected to the ventilation pipe 32 is opened inside the connecting pipe 46, a sliding groove is opened inside the connecting pipe 46, the adjusting ball 45 is slidably connected to the sliding groove, an elastic member 461 is arranged inside the sliding groove, one end of the elastic member 461 is fixedly connected to one end of the sliding groove close to the through hole, and the other end of the elastic member 461 is fixedly connected to the adjusting ball 45, and the winding reel 432 can automatically reel up the adjusting rope 44.

[0038] See also Figure 3 As shown, one end of the fixing part 21 close to the side wall of the charging pile body 1 is fixedly connected with a dustproof window cover 25, there are multiple fan groups 5, and the air outlet end of each fan group 5 is respectively fixedly connected to one end of the corresponding fixing part 21 away from the side wall of the charging pile body 1, and an avoidance hole for the adjustment rope 44 to pass through is opened on the fixing part 21.

[0039] When in use, the fan group 5 blows air toward the noise reduction component 2, so that the air inside the charging pile body 1 is drawn into the noise reduction component 2. At the same time, the noise generated by the fan group 5 and the air flow noise are transmitted outward through the noise reduction device inside the charging pile body 1. When blowing toward the second sound-absorbing layer 23, the sound waves are absorbed. At the same time, the air is blocked by the second sound-absorbing layer 23, and the flow direction is turned to the first sound-absorbing layer 22. When the air is blocked by the first sound-absorbing layer 22 again, the sound waves are absorbed again, and the flow direction is turned to the second sound-absorbing layer 23. After the noise is absorbed by the multiple layers of the first sound-absorbing layer 22 and the second sound-absorbing layer 23, it is discharged from the charging pile body 1, thereby reducing the noise inside the charging pile body 1.

[0040] In the second embodiment, it was found in actual use that during the noise reduction process, the air flow speed was reduced after the noise reduction device reduced the noise, which affected the heat dissipation of the charging pile. Further improvements were made on the basis of the above embodiment.

[0041] On the basis of the above embodiment, when in use, while the fan group 5 extracts the air inside the charging pile body 1, the guide member 31 blows air into the fixing member 21 and discharges the charging pile body 1. Since the air outlet of the guide member 31 is not blocked by the first sound absorbing layer 22 and the second sound absorbing layer 23, the air flow speed at the end of the fixing member 21 close to the guide member 31 is faster. Since the airflow direction blocked by the first sound absorbing layer 22 and the second sound absorbing layer 23 inside the fixing member 21 is small, part of the airflow flows in the direction of the guide member 31 and then blows air into the noise reduction component 2 through the guide member 31, increasing the flow rate of the local airflow inside the fixing member 21, so that the airflow at the first sound absorbing layer 22 and the second sound absorbing layer 23 generates negative pressure, so that part of the airflow is extracted, and while the airflow speed inside the first sound absorbing layer 22 and the second sound absorbing layer 23 is increased, the weakened airflow is compensated, so that while reducing the noise, the influence of the noise reduction device on the airflow is reduced, and the heat dissipation efficiency of the charging pile body 1 during the noise reduction process is increased.

[0042] Embodiment 3: It is found in actual use that when compensating the airflow inside the noise reduction component 2, only the speed of the local airflow increases, which makes the internal airflow at one end of the noise reduction component 2 away from the guide member 31 discharge more slowly. Further improvements are made on the basis of the above embodiment.

[0043] On the basis of the above embodiment, when in use, one end of the fixing member 21 away from the guide member 31 is connected to the air inlet of the guide member 31 on the centrally symmetrical fixing member 21 through the ventilation pipe 32. The guide member 31 on the fixing member 21 will draw out the airflow inside the opposite fixing member 21 while blowing air, thereby generating a negative pressure inside the opposite fixing member 21, so that the airflow blocked by the first sound absorbing layer 22 and the second sound absorbing layer 23 inside the opposite fixing member 21 is drawn out, and the airflow blocked by the first sound absorbing layer 22 and the second sound absorbing layer 23 is forced to be accelerated to discharge. The noise reduction components 2 on both sides are linked through the ventilation pipe 32 to form a two-way airflow circulation, so that the airflow velocity of the first sound absorbing layer 22 and the second sound absorbing layer 23 inside the noise reduction component 2 is further increased, thereby further increasing the heat dissipation efficiency of the charging pile body 1.

[0044] Embodiment 4: It is found in actual use that in the process of noise reduction, the first sound absorbing layer 22 and the second sound absorbing layer 23 cannot guide the airflow according to the heat dissipation requirements, and further improvements are made on the basis of the above embodiments.

[0045] On the basis of the above embodiment, during use, when the temperature inside the charging pile body 1 is high, the power of the fan group 5 and the guide member 31 is increased, and the force of the air extraction of the guide member 31 is enhanced, so that the flow rate of the air inside the ventilation pipe 32 is greater, so that negative pressure is generated inside the connecting pipe 46. When the pressure of the negative pressure inside the connecting pipe 46 is greater than the elastic member 461, the adjusting ball 45 slides toward the ventilation pipe 32 due to the negative pressure, so that the adjusting rope 44 drives the winding drum 432 to rotate, and the rotation of the winding drum 432 drives the second rotating shaft 43 to drive the pulley 431 to rotate, so that the connecting member 41 drives the first rotating shaft 24 to rotate, so The multiple second sound-absorbing layers 23 are caused to rotate. When the power of the guide member 31 is increased, the flow velocity inside the ventilation pipe 32 increases, the pressure on the adjusting ball 45 increases, and the sliding distance of the adjusting ball 45 increases, thereby increasing the rotation angle of the second rotating shaft 43, thereby reducing the resistance of the airflow through the second sound-absorbing layer 23, and at the same time, the change in the direction of the airflow after being blocked is reduced. Through the rotation of the second sound-absorbing layer 23, the direction of the airflow passing through the first sound-absorbing layer 22 and the second sound-absorbing layer 23 is guided, thereby further increasing the heat dissipation efficiency of the charging pile body 1, and at the same time, the angle of the second sound-absorbing layer 23 is adjusted according to different heat dissipation requirements to balance noise reduction and heat dissipation.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A charging pile noise reduction device, characterized in that: include: A noise reduction component (2), the noise reduction component (2) comprising fixing members (21) arranged on both sides of a charging pile body (1), a plurality of first sound absorbing layers (22) being arranged inside each of the fixing members (21), and a plurality of second sound absorbing layers (23) being arranged alternately between each two adjacent first sound absorbing layers (22); A drainage component (3), the drainage component (3) comprising a drainage component (31) arranged at one end of the fixing component (21), the drainage component (31) drawing air from the fixing component (21) on the opposite side to the fixing component (21) on the same side as the drainage component (31) through negative pressure, and the flow velocity of the air at the air outlet of the drainage component (31) is greater than the flow velocity of the air after passing through the first sound absorbing layer (22) and the second sound absorbing layer (23); An adjustment component (4), the adjustment component (4) comprising a connecting member (41) arranged at one end of the plurality of second sound absorbing layers (23), the adjustment component (4) further comprising a driving member (42) arranged at one side of the fixing member (21), the driving member (42) being capable of rotating the plurality of second sound absorbing layers (23) via the connecting member (41).

2. The charging pile noise reduction device according to claim 1, characterized in that: The noise reduction components (2) are at least one group, each group of the noise reduction components (2) is two and are respectively arranged on both sides of the charging pile body (1), and the two noise reduction components (2) in each group are centrally symmetrical.

3. The charging pile noise reduction device according to claim 2, characterized in that: One end of each of the fixing members (21) away from the air guide member (31) is fixedly connected to a ventilation pipe (32), and one end of the ventilation pipe (32) away from the fixing member (21) is fixedly connected to an air inlet end of the air guide member (31) on the fixing member (21) symmetrically distributed around the center.

4. The charging pile noise reduction device according to claim 3, characterized in that: Each of the first sound absorbing layers (22) is rotatably connected to at least one first rotating shaft (24), and each of the first rotating shafts (24) is fixedly connected to one end of the corresponding second sound absorbing layer (23) close to the first sound absorbing layer (22). A fixing rod (241) is fixedly connected to the side wall of the first rotating shaft (24), and one end of the fixing rod (241) away from the first rotating shaft (24) is fixedly connected to the connecting member (41).

5. The charging pile noise reduction device according to claim 4, characterized in that: The driving member (42) comprises a second rotating shaft (43) rotatably connected to one side of the fixing member (21); the second rotating shaft (43) is two and is respectively arranged at two ends of the fixing member (21); a pulley (431) is fixedly connected to the outer wall of each of the two second rotating shafts (43); the two pulleys (431) are meshed with the connecting member (41); and a cable reel (432) is fixedly connected to the second rotating shaft (43) near one end of the ventilation pipe (32).

6. The charging pile noise reduction device according to claim 5, characterized in that: An adjustment rope (44) is wound on the side wall of the cable reel (432), and one end of the adjustment rope (44) is fixedly connected to an adjustment ball (45).

7. The charging pile noise reduction device according to claim 6, characterized in that: One end of each fixing member (21) close to the ventilation pipe (32) is fixedly connected to a connecting pipe (46); a through hole connected to the ventilation pipe (32) is provided inside the connecting pipe (46); a sliding groove is provided inside the connecting pipe (46); the adjusting ball (45) is slidably connected to the sliding groove; an elastic member (461) is provided inside the sliding groove; one end of the elastic member (461) is fixedly connected to one end of the sliding groove close to the through hole; and the other end of the elastic member (461) is fixedly connected to the adjusting ball (45).

8. The charging pile noise reduction device according to claim 7, characterized in that: One end of the fixing member (21) close to the side wall of the charging pile body (1) is fixedly connected to a dustproof window cover (25).

9. The charging pile noise reduction device according to claim 8, characterized in that: It also comprises a fan group (5), wherein there are a plurality of fan groups (5), and the air outlet end of each fan group (5) is fixedly connected to an end of a corresponding fixing member (21) away from the side wall of the charging pile body (1).

10. The charging pile noise reduction device according to claim 9, characterized in that: The fixing member (21) is provided with an escape hole through which the adjustment rope (44) passes.

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