Double-manufactured cloth bag air pipe system

Abstract

The utility model discloses a double-manufactured cloth bag air pipe system, and particularly relates to the technical field of cloth bag air pipes, which comprises a cloth bag air pipe with air outlets at the upper part and the lower part; the volume adjusting part comprises a flexible separation layer and a tail end fixing point, the flexible separation layer is obliquely sewn in the cloth bag air pipe, an air inlet of the flexible separation layer is higher than the other end of the flexible separation layer, the tail end fixing point is used for sewing the flexible separation layer and the cloth bag air pipe, and the tail end fixing point and the closed tail end of the cloth bag air pipe are arranged in a spaced mode; a flexible separation layer is arranged in the cloth bag air pipe, a sealing guide piece is arranged on the flexible separation layer, the inclined flexible separation layer is arranged in the cloth bag air pipe, the tail end of the cloth bag air pipe supplying air downwards can keep certain stability under the condition that air pressure is insufficient, the shaking degree and the noise loudness are reduced, and the sealing guide piece and the flexible separation layer are combined for use. The working mode of upward air supply or downward air supply of the cloth bag air pipe can be flexibly adjusted, the cloth bag air pipe is a double-mode cloth bag air pipe, the application scene of the cloth bag air pipe is more flexible, and the position of the air pipe does not need to be detached or changed.

Description

Technical Field

[0001] This utility model relates to the field of fabric duct technology, and more specifically, to a dual-system fabric duct system. Background Technology

[0002] Fabric ducts are flexible air distribution systems made of special fibers, used to replace traditional air supply ducts, dampers, diffusers, insulation materials, and other air delivery terminal systems.

[0003] Due to its unique flexible wall, the airflow from the inlet to the end of the duct causes the flexible wall to contract and vibrate as the air pressure decreases. This vibration is accompanied by noise and vibration of the connecting parts. If not dealt with in time, it will affect the safety of the ventilation environment. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a dual-system fabric bag duct system. The technical problem to be solved by this utility model is to reduce the problems of duct vibration and poor airflow caused by reduced air pressure at the end of the duct.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-system fabric duct system, including a fabric duct with a downward-facing air outlet at the bottom; a volume adjustment component, including a flexible separation layer and an end fixing point, wherein the flexible separation layer is obliquely sewn into the interior of the fabric duct, and the end of the flexible separation layer near the air inlet of the fabric duct is higher than the other end; the end fixing point is used to sew the flexible separation layer and the fabric duct, and the end fixing point and the closed end of the fabric duct are spaced apart.

[0006] In a preferred embodiment, the beginning of the flexible separation layer is positioned above the center horizontal plane of the fabric duct.

[0007] In a preferred embodiment, an air outlet is provided at the upper part of the fabric duct.

[0008] In a preferred embodiment, the distance between the beginning of the flexible separation layer and the beginning of the bag duct is set, the bag duct and the air outlet of the fan are sealed together, and a sealing guide is provided on the flexible separation layer. The sealing guide is used to guide the airflow output by the fan from the upper air outlet or the lower air outlet of the bag duct.

[0009] In a preferred embodiment, the sealing guide includes a guide surface, zipper one, zipper two, and zipper three. The guide surface and the beginning of the flexible separation layer are fixed, and the outer edge of the guide surface is sewn to zipper one. Zipper three is sewn to the upper inner wall of the fabric duct. Zipper one can be pulled together with zipper three. The guide surface, the flexible separation layer, and the fabric duct form an enclosed space that allows airflow to exit downwards. Zipper two is fixed to the lower inner wall of the fabric duct. Zipper one can be pulled together with zipper two. The guide surface, the flexible separation layer, and the fabric duct form an enclosed space that allows airflow to exit upwards.

[0010] In a preferred embodiment, the flexible separation layer is in a relaxed, drooping state when there is no wind.

[0011] In a preferred embodiment, the flexible separation layer is provided with a flexible expansion layer for increasing the area of ​​the flexible separation layer when unfolded. The flexible expansion layer is folded outward toward the lower part of the fabric duct, and the two sides of the flexible expansion layer are folded into a Z shape.

[0012] In a preferred embodiment, the flexible expansion layer is folded into a trapezoidal shape, with the beginning of the flexible expansion layer close to the air inlet of the fabric duct, and the side length of this end being longer than the end of the folded flexible expansion layer, with a uniform transition between the beginning and end of the flexible expansion layer.

[0013] In a preferred embodiment, the flexible expansion layer includes folding wings and a force-receiving port. The length of the folding wings, which are arranged on the lower side of the flexible separation layer, is greater than the length of the force-receiving port, and the force-receiving port is arranged facing the upper side of the flexible separation layer.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. An inclined flexible separation layer is installed inside the fabric duct, which can maintain a certain stability at the end of the downward air supply fabric duct when the air pressure is insufficient, reducing the degree of vibration and noise.

[0016] 2. The combination of sealing guide and flexible separation layer allows the fabric duct to flexibly adjust to either upward or downward airflow mode, making it a dual-mode fabric duct with more flexible application scenarios and eliminating the need to disassemble or change the position of the duct. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of this utility model. The embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is an external view of the fabric duct of this utility model.

[0019] Figure 2-1This is a schematic diagram showing the air outlet of the baghouse duct after the volume adjustment component is involved in this utility model.

[0020] Figure 2-2 This is a schematic diagram of the air outlet at the bottom of the baghouse duct after the flexible separation layer is incorporated in this utility model.

[0021] Figure 2-3 This is a schematic diagram of the air outlet on the baghouse duct after the volume adjustment component is involved in this utility model.

[0022] Figure 2-4 This is a schematic diagram of the air outlet on the baghouse duct after the flexible separation layer is incorporated in this invention.

[0023] Figure 3 This is a schematic diagram showing the location of the flexible separation layer in this utility model.

[0024] Figure 4 This is a schematic diagram of the upward-arched flexible separation layer in this utility model.

[0025] Figure 5 This is a schematic diagram of the upward-arched flexible separation layer with a sealing guide in this utility model.

[0026] Figure 6 This is a schematic diagram of the downward-arched flexible separation layer in this utility model.

[0027] Figure 7 This is a cross-sectional view of the sealing guide in this utility model.

[0028] Figure 8 This is a perspective view of the sealing guide in this utility model.

[0029] Figure 9 This is a schematic diagram of the slightly unfolded flexible expansion layer in this utility model.

[0030] Figure 10 This is a schematic diagram of the flexible expansion layer in this utility model, where the beginning end is larger than the end end.

[0031] The attached diagram is labeled as follows: 10, fabric duct; 20, volume adjustment component; 21, flexible separation layer; 22, end fixing point; 23, flexible expansion layer; 231, folding wing; 232, force-bearing port; 30, sealing guide component; 31, guide surface; 32, zipper one; 33, zipper two; 34, zipper three. Detailed Implementation

[0032] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0033] like Figures 1-10 In order to solve the problem of vibration of the entire duct at the end of the bag duct 10 due to low air pressure, this solution reduces the flow space of air pressure in the bag duct 10, thereby stabilizing the air pressure and reducing the vibration of the bag duct 10.

[0034] Example 1

[0035] The front and rear diameters of the fabric duct 10 are equal. During manufacturing, a rectangular piece of flame-retardant fiber fabric is cut and sewn together. The fabric duct 10 has several lower air outlets on its lower side and hooks sewn on its upper side for installation on the upper level of the factory area.

[0036] The volume adjustment component 20 includes a flexible separation layer 21 and an end fixing point 22. The flexible separation layer 21 is an isosceles trapezoidal flame-retardant fiber fabric. The end fixing point 22 is used to fix the end of the flexible separation layer 21 to the side wall of the fabric duct 10. The end fixing point 22 is set off towards the lower side of the fabric duct. The two trapezoidal inclined sides of the flexible separation layer 21 are sewn obliquely to the inner wall of the fabric duct 10. It can be approximated that the flexible separation layer 21 divides the internal space of the fabric duct 10 into two. At this time, the beginning of the flexible separation layer 21 is set to be higher than the end fixing point 22. Figure 3 As shown, from the cross-section, the extension direction of the flexible separation layer 21 is inclined relative to the axis of the bag duct 10. Therefore, the airflow output by the fan is introduced from the beginning of the flexible separation layer 21 and the bag duct 10. Taking downward airflow as an example, as the volume of the space enclosed by the inclined flexible separation layer 21 and the bag duct 10 gradually decreases, the flow velocity of the airflow after the pressure is reduced can be stabilized, thereby reducing the vibration frequency generated at the end of the bag duct 10.

[0037] Preferably, a certain distance, such as 200mm, is provided between the end fixing point 22 and the closed end of the fabric duct 10 to facilitate the construction of the inclined flexible separation layer 21.

[0038] Preferably, the beginning of the flexible separation layer 21 should be sewn onto a horizontal plane higher than the central axis of the fabric duct 10, so as to ensure that the diameter of the air inlet enclosed by the flexible separation layer 21 and the lower side of the fabric duct 10 is larger than the original air inlet diameter of the fabric duct 10.

[0039] Example 2

[0040] In practical applications, the following problems were also found: When the flexible separation layer 21 is sewn into the bag duct 10 in a taut state, the airflow entering the bag duct 10 flows between the taut flexible separation layer 21 and the curved, flexible inner wall of the bag duct 10. The air resistance on the upper and lower sides is different, which causes the airflow to become turbulent.

[0041] To address this issue, the following design is proposed: The area of ​​the flexible separation layer 21 is increased, allowing it to be sewn inside the fabric duct 10. In the absence of airflow, the flexible separation layer 21 hangs downwards. When the airflow from the fan enters the enclosed space between the flexible separation layer 21 and the fabric duct 10, the flexible separation layer 21 is able to be supplied with air upwards by the airflow. This results in both the upper and lower sides of the enclosed space being curved. Although the upper and lower sides are not perfectly symmetrical, compared to a flat surface at the top and a curved surface at the bottom, the design of curved surfaces at the top and bottom provides greater stability to the fabric duct 10.

[0042] In practical application, the above design has a problem: although the flexible separation layer 21 is sewn inside the fabric duct 10, the air inlet of the flexible separation layer 21 and the air inlet of the fabric duct 10 are not completely aligned, and the air inlet of the fabric duct 10 extends beyond the air inlet of the flexible separation layer 21. This means that when the fabric duct 10, which is connected to the fan outlet, receives airflow, the airflow will be split in two by the flexible separation layer 21. Although the fabric duct 10 is flexible and stackable, and the inlet of the space enclosed by the flexible separation layer 21 and the fabric duct 10 can be connected to the fan outlet using an interface, this operation is cumbersome, and the interface needs to be designed separately, so it is not recommended.

[0043] To solve the above problems, an additional sealing guide 30 is designed, including a guide surface 31, zipper 1 32, zipper 2 33, and zipper 34. The guide surface 31 and the end edge of the air inlet of the flexible separation layer 21 are sewn together. Zipper 1 32 is sewn onto the outer edge of the guide surface 31. An arc-shaped zipper 34 is sewn onto the upper inner wall of the fabric duct 10, and an arc-shaped zipper 2 33 is sewn onto the lower inner wall. Zipper 1 32 can be pulled together with zipper 2 33 or zipper 34 to change the airflow direction of the guide surface 31. At this time, the fabric duct 10 is still connected to the air outlet of the fan through the existing connection means. When the guide surface 31 is connected to zipper 3 34, the airflow flows from the fan to the lower side of the flexible separation layer 21. When the guide surface 31 is connected to zipper 2 33, the airflow flows from the fan to the upper side of the flexible separation layer 21.

[0044] In this way, the connection between the fabric duct 10 and the fan can be ensured, while the airflow can be guided to the upper or lower side of the flexible separation layer 21.

[0045] When the area of ​​the flexible separation layer 21 is large enough, in the upward air supply state, the guide surface 31 is connected to the zipper 33 on the lower side of the duct opening. Under the influence of wind, the flexible separation layer 21 will adhere to the lower inner wall of the fabric duct 10 and block the lower air outlet. Similarly, in the upward air supply state, the guide surface 31 is connected to the zipper 34 on the upper side of the duct opening. Under the influence of wind, the flexible separation layer 21 will adhere to the upper inner wall of the fabric duct 10 and block the upper air outlet. This allows for flexible switching between upward and downward air supply modes.

[0046] For example, in summer, cold air is denser, so top-mounted air vents are used for air intake and exhaust. The cold air sinks to the activity area, absorbs heat, and then gradually returns to the upper part of the room. This configuration helps to effectively distribute cold air and expel hot air. In winter, bottom-mounted air vents are usually used because warm air needs to be delivered directly to the lower part of the room or areas where people and livestock are active to ensure a comfortable temperature in these areas. Warm air, being less dense, naturally rises, so bottom-mounted air vents help maintain indoor warmth.

[0047] For example, the lower air supply is for summer, and the upper air supply is for winter. The summer or winter air supply mode can be changed by opening and closing the zipper at the inlet (zipper 32).

[0048] For example, top and bottom air vents don't necessarily need to be used in conjunction with hot or cold air; they can also vent room temperature air. In summer, top vents can be used to expel hot air, helping to lower the temperature of the aquaculture pond, which is especially important for tropical fish. Venturing room temperature air through top vents also promotes air circulation, reducing the accumulation of harmful gases caused by excessively high temperatures in the pond. In winter, bottom vents can also vent oxygen, helping to ensure an adequate oxygen supply to the bottom of the pond, which is crucial for the healthy growth of fish. Sufficient oxygen can reduce stress in fish and improve their disease resistance.

[0049] Example 3

[0050] When airflow can be discharged through the upper air outlet on the upper side of the fabric duct 10, because the flexible separation layer 21 is inclined, the air pressure of the gas entering the upper layer of the flexible separation layer 21 decreases due to the increased space volume, resulting in poor airflow stability. Although the flexible separation layer 21 can arch downwards, the volume of the upper space of the flexible separation layer 21 is still larger at the air inlet end than at the end, according to the analysis. To solve this problem, this application has the following design:

[0051] The middle portion of the flexible separation layer 21 is folded downwards to form the flexible expansion layer 23. The flexible expansion layer 23 and the flexible separation layer 21 are integrally formed, but they are separated for explanation only for ease of illustration.

[0052] The flexible expansion layer 23 has Z-shaped sides. Because it is folded downwards, it is not easy for the flexible expansion layer 23 to unfold when the airflow enters the lower enclosed space of the flexible separation layer 21 and the fabric duct 10. However, it unfolds more easily when the airflow enters the upper enclosed space of the flexible separation layer 21 and the fabric duct 10. Following this line of thought, designs such as... Figure 9 , Figure 10 As shown in the structure, the flexible expansion layer 23 has a larger folded area on the air inlet side of the bag duct 10 and a smaller folded area at the end of the bag duct 10. The flexible expansion layer 23 has a uniform transition at both ends. When the airflow enters the enclosed space between the upper part of the flexible separation layer 21 and the bag duct 10, as the flexible expansion layer 23 is fully expanded, the volume of the enclosed space near the end is smaller than the enclosed area at the air inlet end. This is also similar to reducing the space at the end of the bag duct 10, thereby stabilizing the air pressure at the end of the bag duct 10.

[0053] Furthermore, the flexible expansion layer 23 includes a folding wing 231 and a force-receiving port 232. The folding wing 231 is a folded Z-shaped edge, and its length after folding is about three times the length of the force-receiving port 232. When the flexible expansion layer 23 is in a folded state, the force-receiving port 232 will be exposed above the flexible separation layer 21, so that wind can cause the flexible expansion layer 23 to unfold from the upper part of the flexible separation layer 21. The excessively large folding wing 231 can reduce the probability that the wind force below the flexible separation layer 21 will push the flexible expansion layer 23 open.

[0054] Although the unfolded flexible expansion layer 23 can also reduce the end volume of the bag duct 10, the non-unfolded flexible expansion layer 23 is more stable for the downward air supply bag duct 10.

[0055] It should be noted that the above designs are all based on a certain input air pressure. Excessive or insufficient air pressure can cause vibration of the entire fabric duct 10.

[0056] Example 4

[0057] In parallel with Example 3, the area of ​​the flexible separation layer 21 is further increased so that the flexible separation layer 21 can be in contact with the upper and lower inner walls of the corresponding fabric duct 10 whether it is arched upward or downward. By reducing the diameter of the air inlet and increasing the volume of the space where the flexible separation layer 21 is located, the technical effect of stabilizing the air pressure can also be achieved.

[0058] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A dual-system fabric duct system, characterized in that... include: The fabric duct (10) has a downward-facing air outlet at the bottom; The volume adjustment component (20) includes a flexible separation layer (21) and an end fixing point (22). The flexible separation layer (21) is obliquely sewn into the inside of the bag duct (10), and one end of the flexible separation layer (21) near the air inlet of the bag duct (10) is higher than the other end. The end fixing point (22) is used to sew the tail of the flexible separation layer (21) onto the bag duct (10).

2. The dual-system fabric duct system according to claim 1, characterized in that: The beginning of the flexible separation layer (21) is set above the center horizontal plane of the bag duct (10).

3. A dual-system fabric duct system according to claim 1, characterized in that: An air outlet is provided at the upper part of the fabric duct (10).

4. A dual-system fabric duct system according to claim 3, characterized in that: The distance between the beginning of the flexible separation layer (21) and the beginning of the bag duct (10) is set, the bag duct (10) and the air outlet of the fan are sealed, and a sealing guide (30) is provided on the flexible separation layer (21). The sealing guide (30) is used to guide the airflow output by the fan to be output from the upper air outlet or the lower air outlet of the bag duct (10).

5. A dual-system fabric duct system according to claim 4, characterized in that: The sealing guide (30) includes a guide surface (31), a first zipper (32), a second zipper (33) and a third zipper (34). The guide surface (31) and the beginning of the flexible separation layer (21) are fixed, and the outer edge of the guide surface (31) and the first zipper (32) are sewn together. Zipper 3 (34) is sewn onto the upper inner wall of the fabric duct (10). Zipper 1 (32) can be pulled together with zipper 3 (34). The guide surface (31), the flexible separation layer (21) and the fabric duct (10) form an enclosed space that allows airflow to be discharged downwards. The lower inner wall of the fabric duct (10) is sewn with a second zipper (33). The first zipper (32) can be pulled together with the second zipper (33). The guide surface (31), the flexible separation layer (21) and the fabric duct (10) form an enclosed space that allows the airflow to be discharged upward.

6. A dual-system fabric duct system according to claim 1 or 5, characterized in that: The flexible separation layer (21) is in a relaxed and drooping state when there is no wind.

7. A dual-system fabric duct system according to claim 6, characterized in that: The flexible separation layer (21) is provided with a flexible expansion layer (23) for increasing the area of ​​the flexible separation layer (21) when unfolded. The flexible expansion layer (23) is folded outward toward the lower part of the fabric duct (10), and the two sides of the flexible expansion layer (23) are Z-shaped when folded.

8. A dual-system fabric duct system according to claim 7, characterized in that: The flexible expansion layer (23) includes a folding wing (231) and a force-receiving port (232). The length of the folding wing (231) arranged on the lower side of the flexible separation layer (31) is greater than the length of the force-receiving port (232). The force-receiving port (232) is arranged on the upper side of the flexible separation layer (21).

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