Tail end air opening air volume adjusting device for flexible air pipe system

Abstract

The invention relates to a tail end tuyere air volume adjusting device for a flexible air duct system, which comprises a connecting ring, a flexible flow baffle and an adjusting assembly, and the connecting ring is used for being fixedly connected with the inner wall of a flexible air duct; the edge of the flexible flow blocking piece is used for being connected with the connecting ring, and the flexible flow blocking piece can be flexibly folded to any shape. The adjusting assembly is connected with the inner ring of the connecting ring and the edge of the flexible flow blocking piece, and a flow passing opening with the adjustable size is formed between the flexible flow blocking piece and the connecting ring. The connecting ring is installed in the air pipe and fixed to the connecting ring through the adjusting assembly, the flow passing opening is formed between the connecting ring and the flexible flow blocking piece, the size of the flow passing opening can be adjusted by turning over the flexible flow blocking piece to any shape, and therefore the air volume can be adjusted.

Description

Technical Field

[0001] This invention relates to the field of air conditioning and ventilation technology, and in particular to an air volume regulating device for the terminal air outlet of a flexible duct system. Background Technology

[0002] Flexible ducts are widely used in existing ventilation, air conditioning, and fire smoke extraction systems due to their ease of installation and adaptability. However, when adjusting airflow at the end vents of flexible ducts, the following problems are typically encountered: 1. Connection and compatibility issues: Traditional air valves are mostly rigid structures (such as multi-leaf regulating valves and butterfly valves). When their rectangular interfaces are connected to flexible air ducts, there are problems such as inconvenient connection, difficulty in sealing, and easy detachment.

[0003] 2. Complex structure and high cost: Traditional metal dampers consist of multiple blades, connecting rods and actuators, which are complex in structure, heavy in weight, and have high material and manufacturing costs.

[0004] 3. Adjustment performance and sealing performance: Traditional air valves have poor linearity when adjusting low air volume, and it is difficult to achieve a complete seal when closed, resulting in air leakage, which leads to energy waste and reduced adjustment accuracy.

[0005] 4. Weight and space issues: Heavy metal dampers installed at the end of lightweight flexible ducts may cause the ducts to sag and deform, and they also take up a lot of space. Summary of the Invention

[0006] In view of this, it is necessary to provide a terminal air outlet air volume regulating device for flexible duct systems to solve the above problems.

[0007] This invention provides an airflow regulating device for the end vent of a flexible duct system, comprising a connecting ring, a flexible baffle, and an adjusting assembly. The connecting ring is fixedly connected to the inner wall of the flexible duct. The edge of the flexible baffle is connected to the connecting ring and can be flexibly folded into any shape. The adjusting assembly connects the inner ring of the connecting ring and the edge of the flexible baffle, forming an adjustable flow opening between the flexible baffle and the connecting ring.

[0008] Furthermore, the adjustment component includes a first connecting zipper that extends circumferentially around the flexible baffle. The male and female chains of the first connecting zipper are respectively connected to the inner ring of the connecting ring and the edge of the flexible baffle. The zipper can be moved to different positions via the pull head to adjust the size of the flow port.

[0009] Furthermore, the flexible deflector is circular in its unfolded state.

[0010] Furthermore, the flexible deflector has a fan-shaped notch in its unfolded state.

[0011] Furthermore, the adjustment assembly also includes a second connecting zipper, and the flexible deflector includes two semi-circular deflectors. The straight edges of the two semi-circles are connected via the second connecting zipper, and the two semi-circular deflectors can be moved to different positions via the zipper pull. Both semi-circular deflectors can be flexibly folded into any shape.

[0012] Furthermore, there are two first connecting zippers, and the two first connecting zippers are respectively connected to the arc-shaped edges of the two semi-circular deflectors and the inner ring of the connecting ring.

[0013] Furthermore, the adjustment component also includes a folding fixed mother chain and a folding fixed male chain, which are respectively fixedly disposed on both sides of the flexible deflector. The flexible deflector can be folded to the position where the folding fixed mother chain and the folding fixed male chain are connected.

[0014] Furthermore, there are multiple folded fixed mother chains and multiple folded fixed male chains, and the multiple folded fixed mother chains and multiple folded fixed male chains are arranged in parallel to each other.

[0015] Furthermore, the outer wall of the connecting ring is provided with a fixing zipper, and the connecting ring is connected to the inner wall of the flexible air duct via the fixing zipper.

[0016] Furthermore, the connecting ring is a rigid ring.

[0017] Compared with existing technologies: 1. Revolutionary structural simplification: Utilizing a simple "rigid ring + flexible fabric + zipper" structure, it replaces the complex metal blades and linkage mechanism, significantly reducing the number of parts, making the structure compact and extremely lightweight (estimated to be more than 70% lighter than traditional metal dampers).

[0018] 2. Excellent compatibility and ease of installation: Specifically designed for flexible ducts, it is fixed by zipper connection, which is simple, reliable and has good sealing performance, completely solving the industry problem of incompatibility between rigid air valves and flexible air ducts.

[0019] 3. Excellent adjustment and sealing performance: (1) Linear and continuous adjustment: The opening and closing process of the zipper is linear, which makes the air volume adjustment continuous and smooth, and the control precision is high.

[0020] (2) Excellent sealing performance: When the zipper is fully closed, the flexible guide plate is tightly pulled together, which can achieve a near-zero leakage sealing effect, far superior to the traditional multi-leaf damper with gaps.

[0021] 4. Significant economic benefits: Low material costs (mainly fabric and ordinary zippers), simple production process (mainly cutting and sewing), and manufacturing costs are far lower than traditional air valves.

[0022] 5. High reliability and low maintenance: With no complex moving mechanical parts, the failure rate is low. The flexible guide vanes are not prone to corrosion and are easy to maintain and clean.

[0023] 6. Fire safety: The guide plate is made of fire-retardant fabric, which meets the requirements of fire protection regulations and can be used in occasions where fire protection is required.

[0024] 7. Small space occupation of adjustment components: By using various matching and pulling schemes of zippers, the baffle plate is folded and fixed to ensure that the adjustment of the valve is always completed within a very small space. Attached Figure Description

[0025] Figure 1 This is a frontal structural diagram of the overall structure of the terminal air outlet air volume adjustment device for a flexible duct system provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the overall back structure of the terminal air outlet air volume adjustment device for a flexible duct system provided in an embodiment of the present invention. Detailed Implementation

[0026] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0027] like Figure 1 As shown in the figure, an embodiment of the present invention provides an airflow regulating device for the end air outlet of a flexible duct system, including a connecting ring 100, a flexible baffle 200, and an adjusting component 300. The connecting ring 100 is used to be fixedly connected to the inner wall of the flexible duct. The edge of the flexible baffle 200 is used to connect to the connecting ring 100 and can be flexibly folded into any shape. The adjusting component 300 connects the inner ring of the connecting ring 100 and the edge of the flexible baffle 200, and an adjustable flow port is formed between the flexible baffle 200 and the connecting ring 100.

[0028] During implementation, the connecting ring 100 is installed inside the duct, and the adjusting component 300 is used to fix it to the connecting ring 100. An outlet is formed between the connecting ring 100 and the flexible baffle 200. The size of the outlet can be adjusted by folding the flexible baffle 200 to any shape to achieve airflow regulation.

[0029] In this embodiment, the connecting ring 100 is a rigid ring. The connecting ring 100 serves as the supporting frame and connection base of the adjustment device, and its function is to quickly and reliably connect and fix it to the port of the flexible duct.

[0030] In one embodiment, the outer wall of the connecting ring 100 is provided with a fixing zipper 110, and the connecting ring 100 is connected to the inner wall of the flexible air duct via the fixing zipper 110.

[0031] It is understandable that the shape and size of the connecting ring 100 should be determined according to the size of the flexible duct, and are not limited to a circular ring. For example, when the flexible duct is rectangular, the connecting ring 100 is a frame-shaped ring structure.

[0032] In this embodiment, the edge of the flexible deflector 200 is used to connect with the connecting ring 100 and can be flexibly folded into any shape. The flexible deflector 200 is made of a single layer of fire-retardant fabric, which is lightweight and has the ability to deform flexibly.

[0033] In this embodiment, the adjustment component 300 is used to connect the inner ring of the connecting ring 100 and the edge of the flexible baffle 200, forming an adjustable flow port between the flexible baffle 200 and the connecting ring 100. The adjustment component 300 can achieve the connection process at the edge of the flexible baffle 200 for flexible baffles 200 of different shapes after folding.

[0034] In one embodiment, the adjustment component 300 includes a first connecting zipper 310 that extends circumferentially around the flexible baffle 200. The male and female chains of the first connecting zipper 310 are respectively connected to the inner ring of the connecting ring 100 and the edge of the flexible baffle 200. The zipper can be moved to different positions via the pull head of the first connecting zipper 310 to adjust the size of the flow port.

[0035] Specifically, by moving the zipper head of the first connecting zipper 310, the portion of the flexible baffle 200 connected to the main chain is released and can be folded relative to the rest. By moving the zipper head of the first connecting zipper 310 to different positions, the folded portion of the flexible baffle 200 can be adjusted, thereby adjusting the flow outlet to different sizes.

[0036] Understandably, when the flexible baffle 200 is not provided inside the connecting ring 100, that is, when the female and male chains of the first connecting zipper 310 are completely separated, the diameter of the flow port is at its maximum, which is the inner diameter of the connecting ring 100. When the flexible baffle 200 is provided inside the connecting ring 100, as the number of connection points between the female and male chains of the first connecting zipper 310 increases, the diameter of the flow port decreases until the female and male chains of the first connecting zipper 310 are completely connected, at which point the diameter of the flow port is at its minimum.

[0037] In this embodiment, the shape of the flexible deflector 200 can be determined according to actual needs, for example: In one embodiment, the flexible baffle 200 is circular in its deployed state. When the female and male chains of the first connecting zipper 310 are fully connected, the cross-section of the duct is closed.

[0038] In another embodiment, the flexible baffle 200 has a fan-shaped notch in its unfolded state. The flow rate in the duct is minimized when the female and male chains of the first connecting zipper 310 are fully connected.

[0039] To further improve the adjustment range of the flexible deflector 200, in one embodiment, the adjustment component 300 further includes a second connecting zipper 320. The flexible deflector 200 includes two semi-circular deflectors, the straight edges of which are connected by the second connecting zipper 320. The two semi-circular deflectors can be moved to different positions by the pull head of the second connecting zipper 320, and both semi-circular deflectors can be flexibly folded into any shape.

[0040] In this embodiment, there are two first connecting zippers 310, and the two first connecting zippers 310 respectively connect the arc-shaped edges of the two semi-circular deflectors and the inner ring of the connecting ring 100. Figure 1 As shown, two first connecting zippers 310 are respectively disposed on both sides of the X-axis, and a second connecting zipper 320 extends along the X-axis.

[0041] Because the folding part of the flexible baffle 200 is not fixed, it will continuously drift inside the duct under the action of airflow, affecting the stability of the airflow. Therefore, such as Figure 2 As shown, in one embodiment, the adjustment component further includes a folding and fixing female chain 330 and a folding and fixing male chain 340, which are respectively fixedly disposed on both sides of the flexible deflector 200. The flexible deflector 200 can be folded to the position where the folding and fixing female chain 330 and the folding and fixing male chain 340 are connected.

[0042] In this embodiment, there are multiple folding and fixing mother chains 330 and multiple folding and fixing male chains 340, and these multiple folding and fixing mother chains 330 and multiple folding and fixing male chains 340 are arranged in parallel with each other. Figure 1 As shown, the folding fixed mother chain 330 and the folding fixed male chain 340 both extend along the direction parallel to the Y-axis, and the multiple folding fixed mother chains 330 and the multiple folding fixed male chains 340 are arranged sequentially along the X-axis, with the X-axis and Y-axis being perpendicular to each other.

[0043] After the free part of the flexible deflector 200 (i.e., the male and female chains of the first connecting zipper 310 and the second connecting zipper 320 of this part are separated) is folded, the folding fixing female chain 330 at the corresponding position can be connected to the folding fixing male chain 340 at the corresponding position, thereby fixing the free part of the flexible deflector 200.

[0044] It should be noted that, under the influence of wind, the zipper heads of the first connecting zipper 310, the second connecting zipper 320, and the folding and fixing zipper of the flexible deflector 200 may move. Therefore, the aforementioned zipper heads are self-locking, which can lock the zipper head in its current position after adjustment. It is understood that self-locking zipper heads are a conventional feature that those skilled in the art would readily conceive of, and will not be elaborated upon further here.

[0045] Compared with existing technologies: 1. Revolutionary structural simplification: Utilizing a simple "rigid ring + flexible fabric + zipper" structure, it replaces the complex metal blades and linkage mechanism, significantly reducing the number of parts, making the structure compact and extremely lightweight (estimated to be more than 70% lighter than traditional metal dampers).

[0046] 2. Excellent compatibility and ease of installation: Specifically designed for flexible ducts, it is fixed by zipper connection, which is simple, reliable and has good sealing performance, completely solving the industry problem of incompatibility between rigid air valves and flexible air ducts.

[0047] 3. Excellent adjustment and sealing performance: (1) Linear and continuous adjustment: The opening and closing process of the zipper is linear, which makes the air volume adjustment continuous and smooth, and the control precision is high.

[0048] (2) Excellent sealing performance: When the zipper is fully closed, the flexible guide plate is tightly pulled together, which can achieve a near-zero leakage sealing effect, far superior to the traditional multi-leaf damper with gaps.

[0049] 4. Significant economic benefits: Low material costs (mainly fabric and ordinary zippers), simple production process (mainly cutting and sewing), and manufacturing costs are far lower than traditional air valves.

[0050] 5. High reliability and low maintenance: With no complex moving mechanical parts, the failure rate is low. The flexible guide vanes are not prone to corrosion and are easy to maintain and clean.

[0051] 6. Fire safety: The guide plate is made of fire-retardant fabric, which meets the requirements of fire protection regulations and can be used in occasions where fire protection is required.

[0052] 7. The adjustment component 300 occupies little space: Through various matching and pulling schemes of the zipper, the baffle plate is folded and fixed to ensure that the adjustment of the valve is always completed within a very small space.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A terminal airflow regulating device for a flexible duct system, characterized in that, include: Connecting ring, which is used for fixed connection with the inner wall of flexible air duct; The flexible deflector has edges for connecting to the connecting ring and can be flexibly folded into any shape; An adjustment component is connected to the inner ring of the connecting ring and the edge of the flexible baffle, forming an adjustable flow port between the flexible baffle and the connecting ring.

2. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 1, characterized in that, The adjustment component includes a first connecting zipper that extends circumferentially around the flexible baffle. The male and female chains of the first connecting zipper are respectively connected to the inner ring of the connecting ring and the edge of the flexible baffle. The zipper can be moved to different positions via the pull head to adjust the size of the flow port.

3. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 2, characterized in that, The flexible deflector is circular when deployed.

4. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 3, characterized in that, The flexible deflector has a fan-shaped notch in its unfolded state.

5. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 2, characterized in that, The adjustment component also includes a second connecting zipper, and the flexible deflector includes two semi-circular deflectors. The straight edges of the two semi-circles are connected by the second connecting zipper, and the two semi-circular deflectors can be moved to different positions via the pull head of the second connecting zipper. Both semi-circular deflectors can be flexibly folded into any shape.

6. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 5, characterized in that, The number of first connecting zippers is two, and the two first connecting zippers are respectively connected to the arc-shaped edge of the two semi-circular deflectors and the inner ring of the connecting ring.

7. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 1, characterized in that, The adjustment component further includes a folding fixed mother chain and a folding fixed male chain, which are respectively fixedly disposed on both sides of the flexible deflector. The flexible deflector can be folded to the position where the folding fixed mother chain and the folding fixed male chain are connected.

8. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 7, characterized in that, There are multiple folded fixed mother chains and multiple folded fixed male chains, and the multiple folded fixed mother chains and multiple folded fixed male chains are arranged in parallel with each other.

9. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 1, characterized in that, The outer wall of the connecting ring is provided with a fixing zipper, and the connecting ring is connected to the inner wall of the flexible air duct via the fixing zipper.

10. The airflow regulating device for the terminal air outlet of a flexible duct system according to claim 1, characterized in that, The connecting ring is a rigid ring.

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