Low-noise air supply system in clean room

Abstract

The low-noise air supply system in the clean room comprises an air supply power module, a noise elimination module and an air outlet module, the noise elimination module comprises a shell, two connecting pipelines, two noise sensors and a noise reduction mechanism, and the two connecting pipelines are located at openings in the two ends of the shell correspondingly; the two noise sensors are respectively arranged at two ends of the shell; the noise reduction mechanism comprises two square plates, four outer-layer micro-perforated plates and four inner-layer micro-perforated plates, an outer-layer noise reduction cavity is defined by the four outer-layer micro-perforated plates and the two square plates, and an inner-layer noise reduction cavity is defined by the four inner-layer micro-perforated plates, the four outer-layer micro-perforated plates and the two square plates; the noise reduction mechanism further comprises a plurality of partition plates, the partition plates divide the outer-layer micro-perforated plate and the inner-layer micro-perforated plate into a plurality of unit plates, and the unit plates are connected through connecting mechanisms. The low-noise air supply system has the noise reduction effect of achieving different noise frequencies according to different air supply conditions.

Description

Technical Field

[0001] The present application relates to the technical field of clean air supply in operating rooms, and in particular to a low-noise air supply system in a clean room. Background Art

[0002] At present, clean operating rooms are mostly used in the process of internal surgery. By modifying the air supply system, the air is purified and sterilized, and the content of bacteria and germs in the operating room is reduced, so as to achieve the purpose of sterile protection and prevent intraoperative infection during internal surgery, thereby affecting the success efficiency of the operation. The use of conventional side-connected air supply ceilings requires high space on the top side of the room. In some cases where the top side beams and columns of the room are complicated, it is not easy to lay ventilation ducts, and thus it is not easy to install the air supply ceiling by side connection. Therefore, this application adopts the top connection method to install the air supply ceiling to reduce the occupation of the top side space.

[0003] When the air supply ceiling is installed by the top connection method, the air flow at the air outlet is evenly distributed by setting a damping net, so that the wind speed at the air supply ceiling outlet is uniform, and the air flow is reduced from being concentrated at a certain point of the air supply ceiling. However, due to the top connection method, the distance from the air supply end to the air outlet end is greatly shortened. Since the air flow will be decelerated and noise reduced when it is guided through the pipe under the conventional setting, the shortening of the middle pipe is equivalent to a higher noise reduction requirement for the initial air supply end, which leads to the improvement of the silencer module.

[0004] The improvement of the silencer module lies not only in that the silencer uses double-layer steel plates to form a silencer cavity and the inner steel plate is densely covered with silencer holes, but also in that the wind noise generated is inconsistent according to different air supply volumes. The difference in wind noise is that the wavelength of noise generated at different wind speeds is inconsistent. In order for the silencer to achieve the best sound absorption effect, the thickness of the cavity needs to be an odd multiple of 1 / 4 of the noise wavelength to achieve a better silencer effect, and the thicker the cavity, the better the silencer effect.

[0005] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: in the early planning process, the thickness of the cavity is fixed, but in the actual construction process, as the air intake volume of each clean room is different, the parameters of each silencer module will also have slight differences, and such slight differences are easily overlooked during on-site construction. The thickness of the first silencer cavity and the second silencer cavity is often fixed, which has been fixed since the construction planning. The difference in actual air intake volume in different areas produces a difference in noise frequency, which affects the noise reduction effect of the entire clean room air supply system. Summary of the invention

[0006] In order to improve the problem that the noise reduction area cannot be adjusted according to different air intake volumes, the present application provides a low-noise air supply system in a clean room.

[0007] The low-noise air supply system for clean rooms provided in this application adopts the following technical solution: A low-noise air supply system in a clean room comprises an air supply power module, a silencer module and an air outlet module, wherein the silencer module comprises a shell, a connecting pipe, two noise sensors and a noise reduction mechanism, wherein the connecting pipe is provided in two and respectively located at two end openings of the shell, and the two noise sensors are respectively provided at two ends of the shell; The noise reduction mechanism includes two square plates, four outer micro-perforated plates and four inner micro-perforated plates, the four outer micro-perforated plates and the two square plates are arranged to form an outer noise reduction cavity, and the four inner micro-perforated plates, the four outer micro-perforated plates and the two square plates are arranged to form an inner noise reduction cavity; The noise reduction mechanism also includes a plurality of partitions distributed at equal intervals along the length direction of the outer micro-perforated plate, the plurality of partitions separate the outer micro-perforated plate and the inner micro-perforated plate into a plurality of unit plates, and the plurality of unit plates are connected by a connecting mechanism; The two outer micro-perforated plates and the two inner micro-perforated plates distributed in the vertical direction move in the vertical direction, and the length of the two outer micro-perforated plates in the horizontal direction is greater than the length of the two outer micro-perforated plates in the vertical direction; The outer micro-perforated plate slides along the vertical direction through the transmission mechanism, and the inner micro-perforated plate slides along the vertical direction of the square plate through the adjustment mechanism.

[0008] Optionally, the transmission mechanism includes a screw, a limiting rod, two sliders, a power component for controlling the rotation of the screw, and a closing component for supplementing the gap between the top of the square plate and the outer micro-perforated plate. The screw and the limiting rod are respectively arranged at both ends of the outer micro-perforated plate. The screw is rotatably connected to the outer shell, and the limiting rod is fixedly connected to the outer shell. The two sliders are respectively arranged at both ends of the outer micro-perforated plate. The sliders are spirally matched with the screw, and the other slider is sleeved and slid outside the limiting rod.

[0009] Optionally, the power assembly includes a power rod, a plurality of power blades and a control part for controlling the blade area. The power rod is coaxially fixed with the screw rod, and the plurality of power blades are fixed on the outer peripheral wall of the power rod at equal intervals, with the blade planes facing the air supply direction.

[0010] Optionally, the control part includes two relatively sliding control plates, two racks, a gear and a control member, the two racks are respectively slidably arranged on the power blades, the two racks are respectively fixedly connected to the two control plates, the gears rotate on the power blades, the control plates move along the width direction of the power blades, and the power blades are also provided with a limiting member to limit the rotation of the gears.

[0011] Optionally, the control component is configured as a first impeller, the axis direction of the first impeller is along the air supply direction, and the first impeller is coaxially fixed to the gear.

[0012] Optionally, the closing component includes a closing plate, a first electromagnet and a sealing portion for closing both sides of the outer micro-perforated plate. The square plate is provided with a closing cavity, the top of the closing cavity is an opening, the closing plate slides in the closing cavity, the top of the closing plate is provided with a mounting hole, the first electromagnet is installed in the mounting hole, and the first electromagnet adsorbs the outer micro-perforated plate.

[0013] Optionally, the sealing portion includes an adhesive, a shaping piece for shaping the adhesive, and a winding group for winding the adhesive, the shaping piece is used to adhere the end of the adhesive to the bottom surface of the outer micro-perforated plate, the corresponding outer micro-perforated plate and the closing plate.

[0014] Optionally, the shaping member includes a shaping block and an expansion airbag. The shaping block is fixed at the angle of the outer micro-perforated plate, and there is a gap between the shaping block and the closing plate and the side wall of the outer shell. The interior of the shaping block is set as a cavity, and the expansion airbag is an external inflation device. The expansion airbag adheres the adhesive to the closing plate and the side wall of the corresponding outer micro-perforated plate.

[0015] Optionally, the adjustment mechanism is set into two groups and is respectively located at the two ends of the inner micro-perforated plate. The adjustment mechanism includes two guide rails and a sliding rod. The guide rails are arranged along the vertical direction. The two ends of the sliding rod are respectively mounted outside the two guide rails. One end of the two guide rails is respectively connected to the positive and negative poles of the same external power supply, and the two ends of the same guide rail are respectively connected to the positive and negative poles of two different external power supplies. The sliding rod is connected to the end of the inner micro-perforated plate.

[0016] Optionally, the connecting mechanism includes multiple third electromagnets and multiple fourth electromagnets, connecting grooves are provided on both sides of the partition, the two ends of the unit plate are respectively connected to the third electromagnet and the fourth electromagnet, the third electromagnet corresponds to the fourth electromagnet and is attracted to each other, and the third electromagnet or the fourth electromagnet slides and fits into the connecting groove.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. The air supply power module first supplies air into the outer noise reduction cavity, and the noise passes through the outer noise reduction cavity and the inner micro noise reduction cavity and resonates, thereby achieving the purpose of noise reduction and silencing. In the embodiment of the present application, the ratio between the outer noise reduction cavity and the inner noise reduction cavity can also be controlled according to the size of the air supply, that is, the size of the noise generated; in the embodiment of the present application, the thickness of the inner noise reduction cavity in the initial state: the thickness of the outer noise reduction cavity is 50:150, and the difference in the actual air intake in different areas generates a difference in noise frequency, which affects the noise reduction effect of the entire clean room air supply system. Therefore, the cavity thickness is set to an adjustable form. When it is necessary to fine-tune the thickness of the inner noise reduction cavity or the thickness of the outer noise reduction cavity, it is necessary to adjust the position between the outer micro-perforated plate and the inner micro-perforated plate until the best silencing effect is achieved; 2. When the inner micro-perforated plate needs to move, a power supply is turned on at this time, so that the power flows on the two guide rails and the sliding rod. The two guide rails, the sliding rod and the external DC power supply form a closed loop. According to the flow direction of the current and Ampere's law, the direction of the magnetic flux lines of the two guide rails and the sliding rod close to the energized power supply side can be obtained. Then, by the left-hand rule, it can be obtained that the direction of the Ampere force on the sliding rod is parallel to the guide rail and along the length direction of the detection frame, that is, when the guide rail is energized, the sliding rod is acted on by the Ampere force and moves in the vertical direction on the guide rail, thereby driving the inner micro-perforated plate to move. When the inner micro-perforated plate needs to move in the opposite direction, this power supply can be turned off and another power supply can be turned on. At this time, the movement direction of the sliding rod moves in the opposite direction, thereby controlling the inner micro-perforated plate to move downward, thereby achieving the adjustment effect of the inner noise reduction cavity; 3. When the position of the outer micro-perforated plate needs to be adjusted, the restriction on the power rod needs to be released. In general, the outer micro-perforated plate does not need to move downward, but in order to ensure that the outer micro-perforated plate can also move in the vertical direction, the screw rod can be replaced with a bidirectional screw rod, thereby realizing the reciprocating motion of the outer micro-perforated plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 is a schematic diagram of a housing and a closure assembly in an embodiment of the present application; Figure 4 is a schematic diagram of an inner micro-perforated plate, a guide rail and a slide bar in an embodiment of the present application; Figure 5 It is a cross-sectional schematic diagram of the blocking portion in the embodiment of the present application.

[0019] : 1. outer shell; 2. connecting pipe; 3. square plate; 4. outer micro-perforated plate; 5. inner micro-perforated plate; 6. outer noise reduction chamber; 7. inner noise reduction chamber; 8. partition; 9. screw rod; 10. limiting rod; 11. slider; 12. power rod; 13. power blade; 14. control plate; 15. rack; 16. gear; 17. first impeller; 18. limiting member; 19. closing plate; 20. first electromagnet; 21. closing chamber; 22. mounting hole; 23. adhesive attachment; 24. winding roller; 25. winding motor; 26. shaping block; 27. inflation airbag; 28. guide rail; 29. ​​slide rod; 30. third electromagnet; 31. fourth electromagnet. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-5 This application is described in further detail.

[0021] The present application discloses a low-noise air supply system in a clean room. Figure 1-Figure 5 A low-noise air supply system in a clean room includes an air supply power module, a silencer module and an air outlet module connected in sequence. The silencer module includes a shell 1, a connecting pipe 2, two noise sensors and a noise reduction mechanism. The connecting pipe 2 is provided in two and is respectively located at the openings at both ends of the shell 1. The two noise sensors are respectively provided at both ends of the shell 1.

[0022] The air supply power module is set as an air conditioning module in the prior art for air supply. The air outlet module is set as an air supply ceiling, and the wind flow at the air outlet is evenly distributed by setting a damping net (flow equalization membrane), so that the wind speed at the air outlet of the air supply ceiling is uniform, and the wind flow is concentrated from a certain point of the air supply ceiling. The noise reduction module is used to reduce the noise at the air supply end, thereby improving the quiet environment in the clean room of the hospital.

[0023] The two connecting pipes 2 are respectively connected to the air supply end and the air outlet end through the flange, that is, they are connected to the air outlet module and the air supply power module respectively. The two noise sensors are used to quantitatively identify the noise generated by the air inlet end and the air outlet end. Of course, the noise data obtained by the noise sensor can also be displayed on the display screen through the controller. By comparing the two noise sensors, it can be determined whether the noise at the air outlet meets the standard. If the value obtained by the noise sensor at the air outlet is greater than the set value, it is necessary to change the noise reduction mechanism to reduce the noise.

[0024] The noise reduction mechanism includes two square plates 3, four outer micro-perforated plates 4 and four inner micro-perforated plates 5. The four outer micro-perforated plates 4 and the two square plates 3 are arranged to form an outer noise reduction cavity 6. The four inner micro-perforated plates 5, the four outer micro-perforated plates 4 and the two square plates 3 are arranged to form an inner noise reduction cavity 7.

[0025] The air supply power module first supplies air into the outer noise reduction chamber 6, and the noise passes through the outer noise reduction chamber 6 and the inner micro noise reduction chamber and generates resonance, thereby achieving the purpose of noise reduction and silencing. In the embodiment of the present application, the ratio between the outer noise reduction chamber 6 and the inner noise reduction chamber 7 can also be controlled according to the size of the air supply, that is, the size of the noise generated; in the embodiment of the present application, the thickness of the inner noise reduction chamber 7 and the thickness of the outer noise reduction chamber 6 are 50:150 in the initial state, and the different actual air intake volumes in different areas generate different noise frequencies, which affect the noise reduction effect of the entire clean room air supply system.

[0026] Therefore, the cavity thickness is set to be adjustable. When the thickness of the inner noise reduction cavity 7 or the thickness of the outer noise reduction cavity 6 needs to be fine-tuned, the position between the outer micro-perforated plate 4 and the inner micro-perforated plate 5 is adjusted until the best sound insulation effect is achieved so that the thickness ratio of the outer noise reduction cavity 6 to the inner noise reduction cavity 7 can be 60:140, 30:170, 40:160 and other different forms, thereby achieving noise reduction of different noise frequencies according to different air supply conditions.

[0027] It should be noted that the total thickness of the first cavity and the second cavity includes but is not limited to 200, and may also be other sizes, such as 150, 300, 400, etc., which is not limited to this.

[0028] The noise reduction mechanism also includes a plurality of partitions 8 evenly spaced along the length direction of the outer micro-perforated plate 4. The partitions 8 extend in the vertical direction until they pass through the inner micro-perforated plate 5. The top of the partition 8 is fixedly connected to the top inner wall of the outer shell 1. The partitions are respectively abutted against two corresponding outer micro-perforated plates 4 on both sides along the horizontal direction. In the embodiment of the present application, it is assumed that the inner micro-perforated plate 5 will not slide off the partition 8 during the movement. The partitions 8 and the square plates 3 provide support for the outer micro-perforated plate 4 and the inner micro-perforated plate 5 while reducing the axial sound propagation speed, thereby extending the residence time of the noise inside the outer shell 1 to ensure the sound insulation quality. The plurality of partitions 8 separate the outer micro-perforated plate 4 and the inner micro-perforated plate 5 into a plurality of unit plates, and the plurality of unit plates are connected by a connecting mechanism.

[0029] The connecting mechanism includes a plurality of third electromagnets 30 and a plurality of fourth electromagnets 31, and connecting grooves are provided on both sides of the partition 8. The two ends of the unit plate are respectively connected to the third electromagnet 30 and the fourth electromagnet 31, and the third electromagnet 30 corresponds to the fourth electromagnet 31 and is adsorbed to each other. The third electromagnet 30 or the fourth electromagnet 31 is slidably adapted in the connecting groove. In the embodiment of the present application, the third electromagnet 30 and the fourth electromagnet 31 can be adsorbed through the connecting groove, that is, the third electromagnet 30 of the unit plate and the fourth electromagnet 31 of the adjacent unit plate are adsorbed and connected to each other, but the end of the unit plate at the two ends facing the shell 1 or the partition 8 is not A third electromagnet 30 or a fourth electromagnet 31 is set. It needs to be further emphasized that the outer micro-perforated plate 4 or the inner micro-perforated plate 5 can move as a whole through the reasonable distribution of the third electromagnet 30 and the fourth electromagnet 31. The distribution relationship of the third electromagnet 30 and the fourth electromagnet 31 will not be repeated here. This is mainly used to explain that the partition 8 will not move during the entire movement process. Multiple unit plates move between two adjacent partitions 8 and keep the outer micro-perforated plate 4 or the inner micro-perforated plate 5 moving together. Therefore, the subsequent descriptions are all based on the outer micro-perforated plate 4 or the inner micro-perforated plate 5 as a whole.

[0030] The adjustment mechanism is set to two groups and is respectively located at the two ends of the inner micro-perforated plate 5. The adjustment mechanism includes two guide rails 28 and a slide bar 29. The guide rails 28 are arranged along the vertical direction. The two ends of the slide bar 29 are respectively sleeved outside the two guide rails 28. One end of the two guide rails 28 is respectively connected to the positive and negative poles of the same external power supply, and the two ends of the same guide rail 28 are respectively connected to the positive and negative poles of two different external power supplies. The slide bar 29 is connected to the end of the inner micro-perforated plate 5. The guide rails 28 and the slide bar 29 are made of conductive materials, and the inner micro-perforated plate 5 can be made of insulating materials. The four guide rails 28 are respectively close to the four corners of the inner micro-perforated plate 5, and the slide bar 29 is fixedly connected to the end of the inner micro-perforated plate 5. When the inner micro-perforated plate 5 needs to move, a power supply is turned on at this time, so that the power flows on the two guide rails 28 and the slide bar 29, and the two guide rails 28, the slide bar 29 and the external DC power supply form a closed loop. According to the direction of current flow and Ampere's law, the direction of the magnetic flux lines of the two guide rails 28 and the slide bar 29 close to the energized power supply side can be obtained. Then, by the left-hand rule, it can be obtained that the direction of the Ampere force on the slide bar 29 is parallel to the guide rail 28 and along the length direction of the detection frame, that is, when the guide rail 28 is energized, the slide bar 29 is acted upon by the Ampere force and moves in the vertical direction on the guide rail 28, thereby driving the inner micro-perforated plate 5 to move. When the inner micro-perforated plate 5 needs to move in the opposite direction, this power supply can be turned off and another power supply can be turned on. At this time, the movement direction of the slide bar 29 moves in the opposite direction, thereby controlling the inner micro-perforated plate 5 to move downward, thereby achieving the adjustment effect of the inner noise reduction cavity 7.

[0031] The transmission mechanism includes a screw rod 9, a limiting rod 10, two sliders 11, a power component for controlling the rotation of the screw rod 9, and a closing component for supplementing the gap between the top of the square plate 3 and the outer micro-perforated plate 4. The screw rod 9 and the limiting rod 10 are respectively arranged at the two ends of the outer micro-perforated plate 4, the screw rod 9 is rotatably connected to the outer shell 1, the limiting rod 10 is fixedly connected to the outer shell 1, and the two sliders 11 are respectively arranged at the two ends of the outer micro-perforated plate 4, the slider 11 is spirally matched with the screw rod 9, and the other slider 11 is sleeved and slid outside the limiting rod 10. In the embodiment of the present application, other reciprocating devices such as electric push rods can also be used. Since the movement of the screw rod 9 is more stable, it also plays the effect of supporting the multiple unit plates forming the outer micro-perforated plate 4, making the movement of the outer micro-perforated plate 4 more stable. During the rotation of the screw rod 9, due to the action of the slider 11 and the limiting rod 10, the rotation of the outer micro-perforated plate 4 is restricted, and the outer micro-perforated plate 4 moves in the vertical direction.

[0032] The power assembly includes a power rod 12, a plurality of power blades 13 and a control part for controlling the blade area. The power rod 12 is coaxially fixed with the screw rod 9. The plurality of power blades 13 are fixed at equal intervals on the outer peripheral wall of the power rod 12. The blade plane faces the air supply direction, that is, the blade is fixedly connected to the peripheral wall of the power rod 12 along one end of its length direction, and the blade is vertically arranged. The control part includes two relatively sliding control plates 14, two racks 15, a gear 16 and a control member. The two racks 15 are respectively slidably arranged on the power blades 13. The two racks 15 are respectively fixedly connected to the two control plates 14. The gear 16 rotates on the power blades 13. The control plate 14 moves along the width direction of the power blades 13. The power blades 13 are also provided with a limiting member 18 for limiting the rotation of the gear 16. The control member is set as a first impeller 17. The axial direction of the first impeller 17 is along the air supply direction. The first impeller 17 is coaxially fixed with the gear 16. In order to minimize the noise generated by the blades and the first impeller 17 during rotation, the blades are made of lightweight and high-strength materials. If the wind force is not strong enough to make the screw 9 rotate quickly, in order to avoid affecting the movement speed of the outer micro-perforated plate 4, the first impeller 17 is rotated to drive the gear 16 to rotate. During the rotation process, the gear 16 drives the two racks 15 to move away from each other. At this time, the two control plates 14 can move outward. After the control plates 14 are unfolded, the contact area of ​​the power blades 13 becomes larger, the rotation speed of the power blades 13 will also increase, and it will be easier to drive the screw 9 to start rotating. In the embodiment of the present application, since the setting is completed, the corresponding wind force requirement on site will not change, so the control plate 14 does not need to consider whether it is retracted.

[0033] The limiting member 18 is configured as a second electromagnet, and the second electromagnet is disposed on the inner wall of the outer shell 1. Of course, the first impeller 17 can also be provided with a second electromagnet for limiting the first impeller 17. When it is necessary to adjust the position of the outer micro-perforated plate 4, it is necessary to release the restriction of the power rod 12. Because the outer micro-perforated plate 4 does not need to move downward under normal circumstances, but in order to ensure that the outer micro-perforated plate 4 can also move in the vertical direction, the screw 9 can be replaced with a bidirectional screw 9, so that the reciprocating motion of the outer micro-perforated plate 4 can be realized. It should be noted that the inner micro-perforated plate 5 cannot adopt the driving methods such as the screw 9 and the blades. This is because the inner micro-perforated plate 5 is located on the inner wall of the outer shell 1, has a farther air inlet end, and the inner wall structure of the outer shell 1 is limited. Therefore, the inner micro-perforated plate 5 cannot adopt the transmission direction of the screw 9, and can only be driven by electricity.

[0034] When the restriction of the power rod 12 is released, the power blades 13 and the power rod 12 begin to be driven through the interaction between the wind and the power blades 13, and the screw 9 begins to rotate. With the cooperation of the restriction rod 10, the adjustment effect of the position of the outer micro-perforated plate 4 is achieved. At this time, the thickness of the outer noise reduction cavity 6 changes. The staff can obtain the optimal ratio between the outer noise reduction cavity 6 and the inner noise reduction cavity 7 by observing the data of the noise sensor at the air outlet and comparing the data between the two noise sensors, and then obtain the optimal ratio between the outer noise reduction cavity 6 and the inner noise reduction cavity 7 under the current air intake condition. If adjustment is still required, the inner noise reduction cavity 7 can also be notified to adjust at this time until the noise at the air outlet is reduced to a minimum.

[0035] However, since the outer micro-perforated plate 4 is in contact with the top of the square plate 3 in the initial position, there will be a gap between the outer micro-perforated plate 4 and the square plate 3 during the upward movement of the outer micro-perforated plate 4. In order not to affect the noise reduction effect, the closing component includes a closing plate 19, a first electromagnet 20 and a sealing portion for closing both sides of the outer micro-perforated plate 4. The square plate 3 is provided with a closing cavity 21. The top of the closing cavity 21 is an opening. The closing plate 19 slides in the closing cavity 21. The top of the closing plate 19 is provided with a mounting hole 22. The first electromagnet 20 is installed in the mounting hole 22. The first electromagnet 20 adsorbs the outer micro-perforated plate 4. Due to design requirements, the length dimension of the closing cavity 21 is close to the length dimension of the square plate 3, but there is still a small gap between the end of the square plate 3 and the inner wall of the outer shell 1.

[0036] The sealing portion includes an adhesive 23, a shaping piece for shaping the adhesive 23, and a winding group for winding the adhesive 23. The shaping piece is used to adhere the end of the adhesive 23 to the bottom surface of the outer micro-perforated plate 4, the corresponding side wall of the outer micro-perforated plate 4 and the closing plate 19. The adhesive 23 can be made of tape in the embodiment of the present application. The winding group includes a winding roller 24 and a winding motor 25. The winding roller 24 is rotatably arranged on the inner wall of the square plate 3. The reason for designing the motor here is that the air volume on the inner wall of the outer casing 1 will be reduced, which is not enough to rotate the winding roller 24 through control such as an impeller. In addition, in the embodiment of the present application, since the outer micro-perforated plate 4 needs to reciprocate, the winding roller 24 also needs to reciprocate to wind the adhesive 23.

[0037] The shaping member includes a shaping block 26 and an expansion airbag 27. The shaping block 26 is fixed at the angle of the outer micro-perforated plate 4, and there is a gap between the shaping block 26 and the closing plate 19 and the side wall of the shell 1. The interior of the shaping block 26 is set as a cavity, and the expansion airbag 27 is an external inflation device. The expansion airbag 27 adheres the adhesive 23 to the closing plate 19 and the side wall of the corresponding outer micro-perforated plate 4. In the embodiment of the present application, the cavity of the shaping block 26 is opened toward the corresponding outer micro-perforated plate 4 and the closing plate 19. Therefore, the expansion airbag 27 is also opened toward the corresponding outer micro-perforated plate 4 and the closing plate 19 during the expansion process; as the closing plate 19 When following the movement of the outer micro-perforated plate 4, the outer micro-perforated plate 4 drives the adhesive 23 to move. At this time, the winding motor 25 also needs to wind or release the adhesive 23 accordingly. In the initial state, only the end of the adhesive 23 will be bonded to the outer micro-perforated plate 4 until the noise is adjusted, that is, the ratio of the outer noise reduction cavity 6 and the inner noise reduction cavity 7 is stable. Only then will the expansion airbag 27 be controlled to expand until the adhesive 23 is adhered to the corresponding outer micro-perforated plate 4 and the side wall of the closing plate 19, so that the gap between the closing plate 19 and the outer shell 1 can be blocked to ensure that the outer noise reduction cavity 6 and the inner noise reduction cavity 7 complete the noise reduction work.

[0038] The implementation principle of a low-noise air supply system in a clean room in an embodiment of the present application is as follows: the air supply power module first supplies air into the outer noise reduction cavity 6, and the noise passes through the outer noise reduction cavity 6 and the inner micro noise reduction cavity and generates resonance, thereby achieving the purpose of noise reduction and silencing. In the embodiment of the present application, the ratio between the outer noise reduction cavity 6 and the inner noise reduction cavity 7 can also be controlled according to the size of the air supply, that is, the size of the noise generated; in the embodiment of the present application, the thickness of the inner noise reduction cavity 7 and the thickness of the outer noise reduction cavity 6 in the initial state are 50:150, and the difference in actual air intake in different areas generates different noise frequencies, which affects the noise reduction effect of the entire clean room air supply system. Therefore, the cavity thickness is set to an adjustable form. When it is necessary to fine-tune the thickness of the inner noise reduction cavity 7 or the thickness of the outer noise reduction cavity 6, it is necessary to adjust the position between the outer micro-perforated plate 4 and the inner micro-perforated plate 5 until the best silencing effect is achieved.

[0039] When the inner micro-perforated plate 5 needs to move, a power supply is turned on at this time, so that the power flows on the two guide rails 28 and the slide bar 29, and the two guide rails 28, the slide bar 29 and the external DC power supply form a closed loop. According to the direction of current flow and Ampere's law, the direction of the magnetic flux lines of the two guide rails 28 and the slide bar 29 close to the energized power supply side can be obtained. Then, by the left-hand rule, it can be obtained that the direction of the Ampere force on the slide bar 29 is parallel to the guide rail 28 and along the length direction of the detection frame, that is, when the guide rail 28 is energized, the slide bar 29 is acted upon by the Ampere force and moves in the vertical direction on the guide rail 28, thereby driving the inner micro-perforated plate 5 to move. When the inner micro-perforated plate 5 needs to move in the opposite direction, this power supply can be turned off and another power supply can be turned on. At this time, the movement direction of the slide bar 29 moves in the opposite direction, thereby controlling the inner micro-perforated plate 5 to move downward, thereby achieving the adjustment effect of the inner noise reduction cavity 7.

[0040] When the position of the outer micro-perforated plate 4 needs to be adjusted, the restriction of the power rod 12 needs to be released. Under normal circumstances, the outer micro-perforated plate 4 does not need to move downward, but in order to ensure that the outer micro-perforated plate 4 can also move in the vertical direction, the screw rod 9 can be replaced with a bidirectional screw rod 9, thereby realizing the reciprocating motion of the outer micro-perforated plate 4.

[0041] As the closing plate 19 moves with the outer micro-perforated plate 4, the outer micro-perforated plate 4 drives the adhesive 23 to move. At this time, the winding motor 25 also needs to wind or release the adhesive 23 accordingly. In the initial state, only the end of the adhesive 23 will be bonded to the outer micro-perforated plate 4 until the noise is adjusted, that is, the ratio of the outer noise reduction cavity 6 and the inner noise reduction cavity 7 is stable. Only then will the expansion airbag 27 be controlled to expand until the adhesive 23 is adhered to the corresponding outer micro-perforated plate 4 and the side wall of the closing plate 19, so that the gap between the closing plate 19 and the corresponding outer micro-perforated plate 4 can be sealed to ensure that the outer noise reduction cavity 6 and the inner noise reduction cavity 7 complete the noise reduction work.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low-noise air supply system in a clean room, characterized in that: It comprises an air supply power module, a silencer module and an air outlet module, the silencer module comprising a housing (1), a connecting pipe (2), two noise sensors and a noise reduction mechanism, the connecting pipe (2) being provided in two pieces and respectively located at openings at both ends of the housing (1), and the two noise sensors being respectively provided at both ends of the housing (1); The noise reduction mechanism comprises two square plates (3), four outer micro-perforated plates (4) and four inner micro-perforated plates (5); the four outer micro-perforated plates (4) and the two square plates (3) are arranged to form an outer noise reduction cavity (6); the four inner micro-perforated plates (5), the four outer micro-perforated plates (4) and the two square plates (3) are arranged to form an inner noise reduction cavity (7); The noise reduction mechanism further comprises a plurality of partitions (8) distributed at equal intervals along the length direction of the outer micro-perforated plate (4), wherein the plurality of partitions (8) separate the outer micro-perforated plate (4) and the inner micro-perforated plate (5) into a plurality of unit plates, and the plurality of unit plates are connected by a connecting mechanism; The two outer micro-perforated plates (4) and the two inner micro-perforated plates (4) distributed in the vertical direction move in the vertical direction, and the length dimension of the two outer micro-perforated plates (4) in the horizontal direction is greater than the length dimension of the two outer micro-perforated plates (4) distributed in the vertical direction; The outer micro-perforated plate (4) slides in the vertical direction via a transmission mechanism, and the inner micro-perforated plate (5) slides in the vertical direction along the square plate (3) via an adjustment mechanism.

2. The low-noise air supply system in a clean room according to claim 1, characterized in that: The transmission mechanism comprises a screw (9), a limiting rod (10), two sliders (11), a power assembly for controlling the rotation of the screw (9), and a sealing assembly for supplementing the gap between the top of the square plate (3) and the outer micro-perforated plate (4); the screw (9) and the limiting rod (10) are respectively arranged at two ends of the outer micro-perforated plate (4); the screw (9) is rotationally connected to the outer shell (1); the limiting rod (10) is fixedly connected to the outer shell (1); the two sliders (11) are respectively arranged at two ends of the outer micro-perforated plate (4); the slider (11) is spirally matched with the screw (9); and the other slider (11) is sleeved and slidably disposed outside the limiting rod (10).

3. The low-noise air supply system in a clean room according to claim 2, characterized in that: The power assembly comprises a power rod (12), a plurality of power blades (13) and a control unit for controlling the area of ​​the blades. The power rod (12) is coaxially fixed to the screw rod (9). The plurality of power blades (13) are fixed to the outer peripheral wall of the power rod (12) at equal intervals, and the blade planes face the air supply direction.

4. The low-noise air supply system in a clean room according to claim 3, characterized in that: The control part comprises two relatively sliding control plates (14), two racks (15), a gear (16) and a control member, the two racks (15) are respectively slidably arranged on the power blades (13), the two racks (15) are respectively fixedly connected to the two control plates (14), the gear (16) rotates on the power blades (13), the control plate (14) moves along the width direction of the power blades (13), and the power blades (13) are also provided with a limiting member (18) for limiting the rotation of the gear (16).

5. The low-noise air supply system in a clean room according to claim 4, characterized in that: The control component is configured as a first impeller (17), the axis direction of the first impeller (17) is along the air supply direction, and the first impeller (17) is coaxially fixed with the gear (16).

6. The low noise air supply system in a clean room according to claim 2, characterized in that: The sealing component comprises a sealing plate (19), a first electromagnet (20) and a sealing portion for sealing both sides of the outer micro-perforated plate (4); the square plate (3) is provided with a sealing cavity (21); the top end of the sealing cavity (21) is open; the sealing plate (19) slides in the sealing cavity (21); the top end of the sealing plate (19) is provided with a mounting hole (22); the first electromagnet (20) is mounted in the mounting hole (22); and the first electromagnet (20) adsorbs the outer micro-perforated plate (4).

7. The low-noise air supply system in a clean room according to claim 6, characterized in that: The sealing portion comprises an adhesive (23), a shaping piece for shaping the adhesive (23), and a winding group for winding the adhesive (23); the shaping piece is used to adhere the end of the adhesive (23) to the bottom surface of the outer micro-perforated plate (4), the corresponding side wall of the outer micro-perforated plate (4), and the closing plate (19).

8. The low-noise air supply system in a clean room according to claim 7, characterized in that: The shaping member comprises a shaping block (26) and an expansion airbag (27); the shaping block (26) is fixed at an angle of the outer micro-perforated plate (4); and there is a gap between the shaping block (26) and the closing plate (19) and the side wall of the outer shell (1); the interior of the shaping block (26) is set as a cavity; the expansion airbag (27) is an external inflation device; the expansion airbag (27) adheres the adhesive (23) to the closing plate (19) and the side wall of the corresponding outer micro-perforated plate (4).

9. The low-noise air supply system in a clean room according to claim 1, characterized in that: The adjustment mechanism is arranged in two groups and is respectively located at the two ends of the inner micro-perforated plate (5). The adjustment mechanism comprises two guide rails (28) and a slide bar (29). The guide rails (28) are arranged along the vertical direction. The two ends of the slide bar (29) are respectively sleeved outside the two guide rails (28). One end of the two guide rails (28) is respectively connected to the positive and negative poles of the same external power supply, and the two ends of the same guide rail (28) are respectively connected to the positive and negative poles of two different external power supplies. The slide bar (29) is connected to the end of the inner micro-perforated plate (5).

10. The low-noise air supply system in a clean room according to claim 1, characterized in that: The connection mechanism comprises a plurality of third electromagnets (30) and a plurality of fourth electromagnets (31); connection grooves are provided on both sides of the partition plate (8); the two ends of the unit plate are respectively connected to the third electromagnets (30) and the fourth electromagnets (31); the third electromagnets (30) correspond to the fourth electromagnets (31) and are attracted to each other; the third electromagnets (30) or the fourth electromagnets (31) are slidably adapted in the connection grooves.

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