Silencing air duct

Abstract

The invention discloses a silencing air duct, and belongs to the technical field of ventilation pipelines. The silencing air duct comprises an air pipe, the air pipe comprises a lower half body, an upper half body and two side seats, the lower half body is provided with two first baffles, the upper half body is provided with a second baffle, the two side seats are provided with inserting grooves used for being inserted into the lower half body and the upper half body, the lower half body and the upper half body are both inserted into the inserting grooves, the second baffle is located between the two first baffles, and the two first baffles are located between the two second baffles. According to the air duct, the zigzag channel is formed in the air duct through the second baffles and the two first baffles, noise is fully absorbed, the complete air duct is formed in a combined mode, the air duct is provided with the first baffles and the upper half body, the two second baffles and the lower half body are arranged at intervals, the air duct is provided with the blocking pieces along the center line of the channel, and the adjusting mechanism is arranged in the air duct. The shape of the blocking piece can be adjusted through the adjusting mechanism, the distance between the blocking piece and the first baffle and the distance between the blocking piece and the two second baffles are changed, and therefore the effect of changing the air volume is achieved by changing the ventilation area of the air pipe.

Description

Technical Field

[0001] This invention relates to the field of ventilation duct technology, and in particular to a noise-reducing air duct. Background Technology

[0002] Silencing ducts are used in ventilation systems to eliminate the noise of airflow. They are typically installed at the indoor end of the ventilation duct. However, existing silencer ducts have limited functionality and cannot regulate airflow. Therefore, a new type of silencer duct is needed to solve this problem. Summary of the Invention

[0003] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a noise-reducing air duct.

[0005] To achieve the above objectives, the technical solution of the present invention is: a sound-absorbing air duct, comprising an air pipe, the air pipe including a lower half, an upper half and two side seats, the lower half having two baffles (first type), the upper half having one baffle (second type), and slots for inserting the lower half and the upper half on the two side seats, the lower half and the upper half being inserted into the slots, the baffle (second type) being located between the two baffles (first type), the baffle (second type) being spaced from both baffles (first type), the baffles (first type) being spaced from the upper half, and the two baffles (second type) being spaced from the lower half, a baffle plate being provided along the centerline of the air duct, and an adjustment mechanism being provided inside the air duct for adjusting the distance between the baffle plate and the baffles (first type and second type).

[0006] By adopting the above technical solution, the upper and lower halves are combined to form a meandering channel inside the duct through baffle two and two baffles one, thereby increasing the airflow path and fully absorbing noise. The side seats on both sides are used to fix the position of the upper and lower halves and combine them to form a complete duct. The shape of the baffle can be adjusted by the adjustment mechanism, so that the distance between the baffle and baffle one and two baffles two changes, thereby changing the ventilation area of ​​the duct and thus changing the air volume.

[0007] Preferably, the adjusting mechanism includes guide rollers and movable rollers. The baffle is supported by the guide rollers and movable rollers. The guide rollers are rotatably connected to the side seat. Six movable rollers are provided. Two movable rollers are provided on each side of the second baffle and the two first baffles. All six movable rollers are slidably connected to the side seat through grooves. The side seat is provided with an elastic mechanism for providing elastic force to the movable rollers. One side of the air duct is provided with a winding mechanism for winding the baffle, and the other side of the air duct is provided with a fixing mechanism for fixing the baffle. The baffle of this invention is made of soft plastic. It can be wound up by a winding mechanism and arranged along the centerline of the duct channel by guide rollers and movable rollers. One end of the baffle is fixed by a fixing mechanism. When the winding mechanism winds up the baffle from the other end, the baffle will press the movable roller to overcome the elastic force of the elastic mechanism and move. At this time, the baffle will move closer to the first baffle and the second baffle to achieve the effect of adjusting the ventilation area. When the baffle is attached to the first baffle and the second baffle, the duct will be closed. When the baffle is released by the winding mechanism, the elastic mechanism will release the elastic force to re-tighten the slack baffle and increase the air volume.

[0008] Preferably, the elastic mechanism includes a support member, an elastic member, and a housing. The housing is fixedly connected to the side seat, the support member is slidably connected to the housing, and the support member is fixedly connected to the movable roller. The elastic member is disposed between the support member and the housing. This invention utilizes an elastic member disposed between the housing and the support member to provide elastic force to the movable roller. When the movable roller slides, it drives the support member to slide, thereby applying pressure to the elastic member and deforming it. When the baffle loosens, the elastic member releases its elastic force, pushing the movable roller to slide through the support frame.

[0009] Preferably, the winding mechanism includes a support frame, a winding roller, and a servo motor. The winding roller is rotatably connected to the support frame, one end of the baffle is fixedly connected to the winding roller, the servo motor is fixedly connected to the support frame, and the output shaft of the servo motor is drively connected to the winding roller. The support frame is fixedly connected to the side seat via a connecting mechanism. This invention utilizes a servo motor to drive the winding roller to wind up the baffle. The servo motor is self-locking and can rotate at a certain angle as needed, thereby enabling fine-tuning of the airflow and maintaining the baffle in a specific state.

[0010] Preferably, the fixing mechanism includes a second bracket and a pressure plate. Both ends of the pressure plate are connected to the second bracket via bolts. The baffle is clamped between the baffle and the second bracket. The second bracket is fixedly connected to the side seat via a connecting mechanism. This invention utilizes bolts to press the pressure plate onto the second bracket. By clamping the baffle between the pressure plate and the second bracket, friction is used to fix the baffle. The pressure plate and the second bracket have protruding teeth at the positions where they contact the baffle, allowing for a more secure fixation.

[0011] Preferably, both the first bracket and the second bracket are provided with a connecting plate, and the side seat is fixedly connected to a support plate. The connecting plate has a first fixing hole, and the support plate has several second fixing holes. This invention uses bolts passing through the first and second fixing holes to fix the first bracket or the second bracket to the side seat. The second fixing holes are numerous, allowing the side seat to be cut away according to distance requirements.

[0012] Preferably, the side seat is provided with a boss, and the slot is formed on the boss. This design ensures that the groove does not weaken the strength of the side plate.

[0013] Preferably, a sealing block is provided between the two closest adjacent movable rollers in each group. The sealing block has a groove for the first baffle or the second baffle to be embedded in. Both ends of the sealing block are fixedly connected to the two movable rollers by elastic plates. This invention utilizes the fact that the sealing block can be pressed against the first baffle or the second baffle by the elastic plates on both sides under the action of the movable rollers, so that it will not be blocked by the boss when the air duct is closed.

[0014] Preferably, the side seat is fixedly connected to a baffle for sealing the slide groove. This invention utilizes the baffle to cover the slide groove, thereby preventing air leakage.

[0015] Preferably, the upper and lower halves are provided with a plurality of grooves at both ends. The present invention utilizes the grooves to facilitate the cutting and adjustment of the width of the upper and lower halves. The distance between two adjacent grooves is equal and corresponds to a dimension. By aligning with one of the grooves and cutting as needed, the required width of the upper or lower half can be obtained.

[0016] In summary, the beneficial effects of this invention are: 1. The combination of the upper and lower halves forms a curved air duct, thereby eliminating noise during airflow.

[0017] 2. The flow rate is changed by adjusting the distance between the baffle and baffle one and baffle two.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0019] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0020] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0022] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0024] Figure 1 A schematic diagram of the overall structure after removing one side seat; Figure 2 This is a schematic diagram of the overall structure after half of the retaining shell has been cut open. Figure 3 This is a schematic diagram of the elastic mechanism.

[0025] Explanation of main reference numerals: 1. Upper body; 2. Lower body; 3. Side seat; 4. Baffle one; 5. Baffle two; 6. Baffle plate; 7. Guide roller; 8. Movable roller; 9. Slide groove; 10. Support component; 11. Elastic component; 12. Housing; 13. Bracket one; 14. Take-up roller; 15. Servo motor; 16. Bracket two; 17. Pressure plate; 18. Connecting plate; 19. Support plate; 20. Fixing hole one; 21. Fixing hole two; 22. Boss; 23. Sealing block; 24. Elastic plate; 25. Baffle shell; 26. Groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] like Figure 1-2 As shown, a sound-absorbing air duct includes an air pipe, which comprises a lower half 2, an upper half 1, and two side seats 3. The lower half 2 has two baffles 4, and the upper half 1 has a baffle 5. The two side seats 3 are provided with slots for inserting the lower half 2 and the upper half 1. The lower half 2 and the upper half 1 are inserted into the slots. The baffle 5 is located between the two baffles 4, and there is a gap between the baffle 5 and the two baffles 4. There is a gap between the baffles 4 and the upper half 1, and there is a gap between the two baffles 5 and the lower half 2. A baffle 6 is provided along the center line of the air duct, and an adjustment mechanism is provided inside the air duct for adjusting the distance between the baffle 6 and the baffles 4 and 5.

[0031] By adopting the above technical solution, the upper body 1 and the lower body 2 are combined to form a meandering channel inside the duct through the baffle 2 5 and the two baffles 1 4, thereby increasing the airflow path and fully absorbing noise. The side seats 3 on both sides are used to fix the position of the upper body 1 and the lower body 2 and combine to form a complete duct. The shape of the baffle 6 can be adjusted by the adjustment mechanism, so that the distance between the baffle 6 and the baffle 1 4 and the two baffles 2 5 changes, thereby changing the ventilation area of ​​the duct and thus changing the air volume.

[0032] The adjustment mechanism includes guide rollers 7 and movable rollers 8. The baffle 6 is supported by the guide rollers 7 and movable rollers 8. The guide rollers 7 are rotatably connected to the side seat 3. There are six movable rollers 8. Two movable rollers 8 are provided on both sides of the second baffle 5 and the two first baffles 4. All six movable rollers 8 are slidably connected to the side seat 3 through the sliding groove 9. The side seat 3 is provided with an elastic mechanism to provide elastic force to the movable rollers 8. A winding mechanism for winding the baffle 6 is provided on one side of the air duct, and a fixing mechanism for fixing the baffle 6 is provided on the other side of the air duct. The baffle 6 is made of soft plastic and can be wound up by a winding mechanism. It can be arranged along the centerline of the duct channel by guide roller 7 and movable roller 8. One end of the baffle 6 is fixed by a fixing mechanism. When the winding mechanism winds up the baffle 6 from the other end, the baffle 6 will press the movable roller 8 to overcome the elastic force of the elastic mechanism and move. At this time, the baffle 6 will move closer to the first baffle 4 and the second baffle 5 to achieve the effect of adjusting the ventilation area. When the baffle 6 is attached to the first baffle 4 and the second baffle 5, the duct will be closed. When the baffle 6 is released by the winding mechanism, the elastic mechanism will release the elastic force to re-tighten the loose baffle 6 and increase the air volume.

[0033] The elastic mechanism includes a support member 10, an elastic element 11, and a housing 12. The housing 12 is fixedly connected to the side seat 3, the support member 10 is slidably connected to the housing 12, and the support member 10 is fixedly connected to the movable roller 8. The elastic element 11 is disposed between the support member 10 and the housing 12. The elastic element 11, disposed between the housing 12 and the support member 10, provides elastic force to the movable roller 8. When the movable roller 8 slides, it drives the support member 10 to slide, thereby applying pressure to the elastic element 11 and deforming it. When the baffle 6 relaxes, the elastic element 11 releases its elastic force, pushing the movable roller 8 to slide through the support frame.

[0034] The winding mechanism includes a support frame 13, a winding roller 14, and a servo motor 15. The winding roller 14 is rotatably connected to the support frame 13. One end of the baffle 6 is fixedly connected to the winding roller 14. The servo motor 15 is fixedly connected to the support frame 13, and the output shaft of the servo motor 15 is drively connected to the winding roller 14. The support frame 13 is fixedly connected to the side seat 3 through a connecting mechanism. The servo motor 15 can drive the winding roller 14 to wind up the baffle 6. The servo motor 15 is self-locking and can rotate at a certain angle as needed, thereby enabling fine adjustment of the airflow and keeping the baffle 6 in a certain state.

[0035] The fixing mechanism includes a second bracket 16 and a pressure plate 17. Both ends of the pressure plate 17 are connected to the second bracket 16 by bolts. A baffle 6 is clamped between the baffle and the second bracket 16. The second bracket 16 is fixedly connected to the side seat 3 via a connecting mechanism. Bolts can be used to press the pressure plate 17 onto the second bracket 16. By clamping the baffle 6 between the pressure plate 17 and the second bracket 16, friction can be used to fix the baffle 6. The pressure plate 17 and the second bracket 16 have protruding teeth at the positions where they contact the baffle 6, allowing for a more secure fixation.

[0036] Both bracket 13 and bracket 2 16 are equipped with connecting plates 18, and the side seat 3 is fixedly connected to a support plate 19. The connecting plate 18 has a fixing hole 20, and the support plate 19 has several fixing holes 21. By passing bolts through the fixing holes 20 and 21, bracket 13 or bracket 2 16 can be fixed to the side seat 3. Several fixing holes 21 are provided, and the side seat 3 can be cut off according to distance requirements.

[0037] The side plate 3 is provided with a boss 22, and the slot is formed on the boss 22. This design ensures that the groove does not weaken the strength of the side plate.

[0038] A sealing block 23 is provided between the two nearest adjacent movable rollers 8 in each group. The sealing block 23 is provided with a groove for the baffle 4 or baffle 5 to be inserted. The two ends of the sealing block 23 are fixedly connected to the two movable rollers 8 by elastic plates 24. The sealing block 23 can be pressed against the baffle 4 or baffle 5 by the elastic plates 24 on both sides under the action of the movable rollers 8, so that it will not be blocked by the boss 22 when the air duct is closed.

[0039] The side seat 3 is fixedly connected to a baffle 25 for sealing the slide groove 9. The baffle 25 covers the slide groove 9 to prevent air leakage.

[0040] Several grooves 26 are provided at both ends of the upper body 1 and the lower body 2. The grooves 26 can be used to easily cut and adjust the width of the upper body 1 and the lower body 2. The distance between two adjacent grooves 26 is equal and corresponds to a dimension. As needed, cut one of the grooves 26 to obtain the upper body 1 or the lower body 2 of the required width.

[0041] It should be noted that many specific details have been set forth in the above description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

Claims

1. A sound-absorbing air duct, comprising an air pipe, characterized in that: The duct includes a lower half (2), an upper half (1), and two side seats (3). The lower half (2) has two baffles (4), and the upper half (1) has a baffle (5). The two side seats (3) are provided with slots for inserting the lower half (2) and the upper half (1). The lower half (2) and the upper half (1) are both inserted into the slots. The baffle (5) is located between the two baffles (4). There is a gap between the baffle (5) and the two baffles (4), a gap between the baffles (4) and the upper half (1), and a gap between the two baffles (5) and the lower half (2). A baffle (6) is provided along the center line of the duct. An adjustment mechanism is provided in the duct for adjusting the distance between the baffle (6) and the baffles (4) and the baffles (5).

2. The sound-absorbing duct according to claim 1, characterized in that: The adjustment mechanism includes a guide roller (7) and a movable roller (8). The baffle (6) is supported by the guide roller (7) and the movable roller (8). The guide roller (7) is rotatably connected to the side seat (3). There are six movable rollers (8). Two movable rollers (8) are provided on both sides of the second baffle (5) and the two first baffles (4). All six movable rollers (8) are slidably connected to the side seat (3) through the sliding groove (9). The side seat (3) is provided with an elastic mechanism for providing elastic force to the movable rollers (8). One side of the air duct is provided with a winding mechanism for winding the baffle (6), and the other side of the air duct is provided with a fixing mechanism for fixing the baffle (6).

3. The sound-absorbing duct according to claim 2, characterized in that: The elastic mechanism includes a support member (10), an elastic member (11), and a housing (12). The housing (12) is fixedly connected to the side seat (3), the support member (10) is slidably connected to the housing (12), the support member (10) is fixedly connected to the movable roller (8), and the elastic member (11) is disposed between the support member (10) and the housing (12).

4. The sound-absorbing duct according to claim 2, characterized in that: The winding mechanism includes a support (13), a winding roller (14), and a servo motor (15). The winding roller (14) is rotatably connected to the support (13). One end of the baffle (6) is fixedly connected to the winding roller (14). The servo motor (15) is fixedly connected to the support (13). The output shaft of the servo motor (15) is drivenly connected to the winding roller (14). The support (13) is fixedly connected to the side seat (3) through a connecting mechanism.

5. The noise-reducing duct according to claim 4, characterized in that: The fixing mechanism includes a second bracket (16) and a pressure plate (17). The two ends of the pressure plate (17) are connected to the second bracket (16) by bolts. The baffle (6) is clamped between the baffle and the second bracket (16). The second bracket (16) is fixedly connected to the side seat (3) by a connecting mechanism.

6. The sound-absorbing duct according to claim 5, characterized in that: Both the first bracket (13) and the second bracket (16) are provided with a connecting plate (18), the side seat (3) is fixedly connected with a support plate (19), the connecting plate (18) is provided with a fixing hole (20), and the support plate (19) is provided with a plurality of fixing holes (21).

7. The sound-absorbing duct according to claim 1, characterized in that: The side seat (3) is provided with a boss (22), and the slot is opened on the boss (22).

8. The sound-absorbing duct according to claim 2, characterized in that: A sealing block (23) is provided between the two nearest adjacent movable rollers (8) in each group. The sealing block (23) is provided with a groove for the baffle one (4) or the baffle two (5) to be embedded. The two ends of the sealing block (23) are fixedly connected to the two movable rollers (8) by elastic sheets (24).

9. The sound-absorbing duct according to claim 2, characterized in that: The side seat (3) is fixedly connected to a baffle (25) for sealing the slide (9).

10. The noise-reducing duct according to claim 1, characterized in that: Several grooves (26) are provided at both ends of the upper half (1) and the lower half (2).

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