A flexible silencer joint for air conditioning ducts

Abstract

This utility model relates to the field of HVAC (Heating, Ventilation, and Air Conditioning) and discloses a flexible silencer joint for air conditioning ducts. It includes a passive interface, a connecting component inside the passive interface, an active interface inserted into the passive interface, a sealing component inside the active interface, and two limiting blocks fixedly connected to the right side of the active interface. The connecting component includes a connecting plate fixedly connected to one end of the inner wall of the passive interface. An annular groove is formed on the surface of the connecting plate, and two sliding grooves are formed on one side of the annular groove. A limiting groove is formed on the right side of the connecting plate. In this utility model, the connection is completed by inserting the limiting block fixedly connected to the active interface into the sliding groove of the passive interface, and the pressing plate pressing against the limiting block under the action of a spring. This allows for easy installation even in confined spaces, improving installation convenience.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning, and in particular to a flexible sound-absorbing joint for air conditioning pipes. Background Technology

[0002] With the widespread use of central air conditioning, the problem of its operating noise has become prominent: the vibration of the fan and compressor is transmitted through rigid pipes, and the airflow also generates turbulent noise, which affects comfort. The interference is even more severe in hospital settings. At the same time, traditional rigid joints cannot buffer the displacement of pipes due to thermal expansion and contraction, and are prone to loosening and leakage over time, which exacerbates noise and malfunctions. To solve these two major pain points, this joint, which combines flexible connection and noise reduction function, has emerged, which can reduce vibration transmission and weaken noise.

[0003] The middle layer is made of porous glass wool sound-absorbing material, and the two ends are metal flanges with bolt holes. During operation, the flanges fix the joints to the pipes to ensure stable airflow. The airflow noise and equipment vibration noise in the pipes are absorbed by the porous sound-absorbing material. The noise energy is reflected and lost in the pores of the material, making it difficult to transmit. At the same time, the flanges can accommodate slight pipe movements to avoid rigid collisions that generate additional noise, thereby achieving noise reduction.

[0004] Existing joints require high installation accuracy of the flange during the connection process. The flange must be perfectly aligned with the pipe flange before the bolts can be tightened. In confined spaces, the connection process is laborious and time-consuming. Therefore, a flexible silencer joint for air conditioning pipes is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a flexible silencer joint for air conditioning ducts, which aims to improve the problem that existing joints are laborious and time-consuming to connect in narrow spaces.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a flexible silencer joint for air conditioning pipes, comprising a passive interface, a connecting component inside the passive interface, an active interface inserted inside the passive interface, a sealing component inside the active interface, two limiting blocks fixedly connected to the right side of the active interface, the connecting component comprising a connecting plate, the connecting plate fixedly connected to one end of the inner wall of the passive interface, an annular groove on the surface of the connecting plate, two sliding grooves on one side of the annular groove, a limiting groove on the right side of the connecting plate, a pressing plate abutting the right side of the connecting plate, and several springs fixedly connected to the side of the pressing plate away from the connecting plate;

[0007] As a further description of the above technical solution:

[0008] The sealing assembly includes an annular groove 2, which is disposed inside the active interface. An annular groove 3 is formed on one side of the annular groove 2, and several mounting grooves are formed on the other side of the annular groove 2. A sliding groove 2 is formed on the bottom wall of the mounting groove 2. A sliding rod is inserted into the inner wall of the sliding groove 2. An arc-shaped plate is fixedly connected to the top of the sliding rod. A sealing gasket is fixedly connected to the top of the arc-shaped plate. A spring 2 is fixedly connected to the bottom of the arc-shaped plate.

[0009] As a further description of the above technical solution:

[0010] The passive interface is internally fixed with sound-insulating cotton.

[0011] As a further description of the above technical solution:

[0012] The extrusion plate is slidably connected to the inner wall of the passive interface, and one end of the spring away from the extrusion plate is fixedly connected to one side of the inner wall of the passive interface.

[0013] As a further description of the above technical solution:

[0014] The limiting block is inserted into the inner wall of the slide groove, and the limiting block is rotatably connected to the annular groove.

[0015] As a further description of the above technical solution:

[0016] The limiting block is inserted into the inner wall of the limiting groove, and the extrusion plate abuts against the side of the limiting block away from the active interface;

[0017] As a further description of the above technical solution:

[0018] The bottom end of the second spring is fixedly connected to the bottom wall of the mounting groove, and the second spring is sleeved on the surface of the slide rod.

[0019] As a further description of the above technical solution:

[0020] The arc-shaped plate is slidably connected to the inner wall of the second annular groove, the sealing gasket is slidably connected to the inner wall of the third annular groove, and the sealing gasket abuts against the inner wall of the passive interface.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the limiting block, which is fixedly connected by the active interface, is inserted into the sliding groove of the passive interface. Then, the active interface is rotated to make the limiting block snap into the limiting groove. The extrusion plate presses against the limiting block under the action of the spring to complete the connection. The operation steps are simple and do not require complicated alignment operations. Even in narrow environments, installation can be easily completed, improving the convenience and efficiency of installation.

[0023] 2. In this utility model, when the active interface is snapped into the passive interface, the arc-shaped plate inside the active interface slides along the annular groove under the push of the spring force, causing the sealing gasket at the top to tightly abut against the inner wall of the passive interface. This sealing method can effectively prevent airflow leakage, ensure the airtightness of the air conditioning duct system, and thus ensure the normal operation of the air conditioning system. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a flexible sound-absorbing joint for air conditioning pipes proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a spring in a flexible silencer joint for air conditioning pipes proposed in this utility model.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the connecting plate of a flexible silencer joint for air conditioning pipes proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the sealing gasket of a flexible silencer joint for air conditioning pipes proposed in this utility model;

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Passive interface; 2. Active interface; 3. Connecting plate; 4. Annular groove one; 5. Slide groove one; 6. Limiting groove; 7. Extrusion plate; 8. Spring one; 9. Sound insulation cotton; 10. Limiting block; 11. Annular groove two; 12. Annular groove three; 13. Mounting groove; 14. Slide groove two; 15. Slide rod; 16. Spring two; 17. Arc plate; 18. Sealing gasket. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-4This utility model provides an embodiment of a flexible silencer joint for air conditioning ducts, including a passive interface 1, which serves as the fixed end of the joint and external duct, used to receive and position the active interface 2. The passive interface 1 contains a connecting component, which is the core structure for achieving a stable connection between the active interface 2 and the passive interface 1. The active interface 2 is inserted into the passive interface 1, allowing it to be inserted into the passive interface 1 for docking. The active interface 2 contains a sealing component that fills the gap after docking, preventing air leakage. Two limiting blocks 10 are fixedly connected to the right side of the active interface 2, symmetrically distributed, and can be inserted... The rotation and engagement mechanism, in conjunction with the structure within the passive interface 1, enables rapid positioning and fixation of the active interface 2, preventing loosening after docking. The connecting component includes a connecting plate 3, which is fixedly connected to one end of the inner wall of the passive interface 1. The connecting plate 3 provides the mounting base for the connecting component and is the main mating structure for the limiting block 10. An annular groove 4 is formed on the surface of the connecting plate 3, providing rotational space for the limiting block 10. After insertion, the limiting block 10 can be rotated to adjust its position, preparing for subsequent engagement with the limiting groove 6. Two sliding grooves 5 are formed on one side of the annular groove 4, corresponding one-to-one with the two limiting blocks 10 of the active interface 2, allowing the limiting block 10 to be inserted into the passive interface. At the entrance of the passive interface 1, a limiting groove 6 is formed on the right side of the connecting plate 3. The limiting groove 6 is adapted to the shape of the limiting block 10. When the limiting block 10 rotates to the corresponding position, it can be locked in, restricting the axial movement of the active interface 2 and achieving initial fixation. A pressing plate 7 is abutted on the right side of the connecting plate 3. Several springs 8 are fixedly connected to the side of the pressing plate 7 away from the connecting plate 3. The springs 8 have elastic restoring ability and can push the pressing plate 7 to always fit the limiting block 10 through their own elastic force, enhancing the stability of the limiting block 10 in the limiting groove 6 and preventing the limiting block 10 from dislodging due to vibration. Sound insulation cotton 9 is fixedly connected inside the passive interface 1. The sound insulation cotton 9 can absorb the airflow noise in the air conditioning duct and reduce the noise transmission to the outside. To improve noise reduction, the compression plate 7 is slidably connected to the inner wall of the passive interface 1. The compression plate 7 can slide axially along the inner wall of the passive interface 1. It can be squeezed back when the limiting block 10 is inserted, and it can also be reset and pressed tightly under the action of the spring 8 after the limiting block 10 is engaged. The end of the spring 8 away from the compression plate 7 is fixedly connected to one side of the inner wall of the passive interface 1. The limiting block 10 is inserted into the inner wall of the slide groove 5. The limiting block 10 is rotatably connected to the annular groove 4. The limiting block 10 is inserted into the inner wall of the limiting groove 6. The compression plate 7 abuts against the side of the limiting block 10 away from the active interface 2. Through the abutment between the compression plate 7 and the limiting block 10, the displacement of the active interface 2 is further restricted, ensuring that the active interface 2 and the passive interface 1 are firmly connected.

[0034] Reference Figure 1 , Figure 5 and Figure 6The sealing assembly includes an annular groove 11, which is located inside the active interface 2. The annular groove 11 provides installation and sliding space for the arc-shaped plate 17, allowing the arc-shaped plate 17 to move flexibly within the groove. An annular groove 12 is formed on one side of the annular groove 11, matching the shape of the sealing gasket 18 and guiding the sealing gasket 18 to slide in a specific direction. Several mounting grooves 13 are formed on the other side of the annular groove 11, evenly distributed on the outer side of the annular groove 11. Spring 16 and slide rod 15 provide fixed installation positions to ensure balanced layout of all components of the sealing assembly. A second slide groove 14 is provided on the bottom wall of the mounting groove 13. The second slide groove 14 is adapted to the slide rod 15 and restricts the movement direction of the slide rod 15, allowing it to slide only vertically and preventing the arc plate 17 from tilting during movement. The slide rod 15 is inserted into the inner wall of the second slide groove 14, and the top of the slide rod 15 is fixedly connected to the arc plate 17. The slide rod 15 can move synchronously with the arc plate 17. The curved plate 17 is supported by the other components, ensuring smooth sliding. A sealing gasket 18 is fixedly connected to the top of the curved plate 17. The sealing gasket 18 can fit tightly against the inner wall of the passive interface 1 under the push of the curved plate 17, improving the sealing performance. A second spring 16 is fixedly connected to the bottom of the curved plate 17. The second spring 16 can continuously provide upward elastic force to the curved plate 17, pushing the sealing gasket 18 to fit tightly against the inner wall of the passive interface 1. The bottom of the second spring 16 is fixedly connected to the bottom wall of the mounting groove 13. Spring 16 is sleeved on the surface of slide rod 15. Spring 16 is sleeved on the surface of slide rod 15 to prevent spring 16 from bending during the extension and contraction process, and to ensure that the elastic force acts stably on arc plate 17. Arc plate 17 is slidably connected to the inner wall of annular groove 11. Sealing gasket 18 is slidably connected to the inner wall of annular groove 12. Sealing gasket 18 abuts against the inner wall of passive interface 1. The tight abutment between sealing gasket 18 and the inner wall of passive interface 1 can effectively prevent airflow in air conditioning duct from leaking from the interface gap.

[0035] Working principle: When the active interface 2 is inserted into the passive interface 1, the two limiting blocks 10 on the right side of the active interface 2 first insert into the sliding groove 5 of the connecting plate 3 inside the passive interface 1. During the insertion process, the limiting blocks 10 will first squeeze the compression plate 7 inside the passive interface 1, causing the compression plate 7 to compress the spring 8. Then, the active interface 2 is rotated, and the limiting blocks 10 slide in the annular groove 4. When rotated to the appropriate position, the limiting blocks 10 will be engaged in the limiting groove 6. At this time, the elastic force of spring 8 pushes the compression plate 7 to reset and press against the side of the limiting block 10 away from the active interface 2, thereby firmly locking the active interface 2 into the passive interface 1. At the same time, the sound insulation cotton 9 inside the passive interface 1 can also enhance the sound insulation effect and realize the connection between the two. After the active interface 2 is locked into the passive interface 1, the arc plate 17 inside the active interface 2 slides along the annular groove 11 under the elastic force of spring 16, driving the sealing gasket 18 at the top to slide in the annular groove 12 until the sealing gasket 18 is tightly abutted against the inner wall of the passive interface 1. The sealing performance of the sealing gasket 18 is used to achieve the seal between the active interface 2 and the passive interface 1 to prevent air leakage.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible sound attenuating joint for air conditioning ducts comprising a passive interface (1), characterised in that: The passive interface (1) is provided with a connecting component inside, the active interface (2) is inserted into the passive interface (1), the active interface (2) is provided with a sealing component inside, and the active interface (2) has two limiting blocks (10) fixedly connected to its right side. The connecting assembly includes a connecting plate (3), which is fixedly connected to one end of the inner wall of the passive interface (1). An annular groove (4) is provided on the surface of the connecting plate (3). Two sliding grooves (5) are provided on one side of the annular groove (4). A limiting groove (6) is provided on the right side of the connecting plate (3). A pressing plate (7) is abutted on the right side of the connecting plate (3). Several springs (8) are fixedly connected to the side of the pressing plate (7) away from the connecting plate (3).

2. The flexible sound attenuator joint for air conditioning ducts according to claim 1, characterized in that: The sealing assembly includes an annular groove 2 (11), which is located inside the active interface (2). An annular groove 3 (12) is provided on one side of the annular groove 2 (11), and several mounting grooves (13) are provided on the other side of the annular groove 2 (11). A sliding groove 2 (14) is provided on the bottom wall of the mounting groove (13). A sliding rod (15) is inserted into the inner wall of the sliding groove 2 (14). An arc plate (17) is fixedly connected to the top of the sliding rod (15). A sealing gasket (18) is fixedly connected to the top of the arc plate (17). A spring 2 (16) is fixedly connected to the bottom of the arc plate (17).

3. The flexible sound attenuator joint for air conditioning ducts according to claim 1, characterized in that: The passive interface (1) is internally fixed with sound insulation cotton (9).

4. The flexible sound attenuator coupling of claim 1, wherein: The extrusion plate (7) is slidably connected to the inner wall of the passive interface (1), and the end of the spring (8) away from the extrusion plate (7) is fixedly connected to one side of the inner wall of the passive interface (1).

5. The flexible sound attenuator coupling of claim 1, wherein: The limiting block (10) is inserted into the inner wall of the slide groove (5), and the limiting block (10) is rotatably connected to the annular groove (4).

6. The flexible sound attenuator coupling for air conditioning ducts of claim 1 wherein: The limiting block (10) is inserted into the inner wall of the limiting groove (6), and the extrusion plate (7) abuts against the side of the limiting block (10) away from the active interface (2).

7. The flexible sound attenuator coupling of claim 2, wherein: The bottom end of the second spring (16) is fixedly connected to the bottom wall of the mounting groove (13), and the second spring (16) is sleeved on the surface of the slide rod (15).

8. The flexible sound attenuator coupling for air conditioning ducts, as recited in claim 2, wherein: The arc plate (17) is slidably connected to the inner wall of the second annular groove (11), the sealing gasket (18) is slidably connected to the inner wall of the third annular groove (12), and the sealing gasket (18) abuts against the inner wall of the passive interface (1).

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