A composite duct structure

Abstract

This utility model discloses a composite duct structure, belonging to the field of ventilation equipment technology. The composite duct structure includes an inlet duct and an outlet duct. Connecting plates are fixedly connected to both ends of the inlet and outlet ducts. Two clamping plates are engaged between the connecting plates at their closest ends. Opening slots are provided on the top of both sides of each clamping plate, and T-shaped clamping rods are installed within these slots. Return springs are installed on the outer periphery of each T-shaped clamping rod. One end of the T-shaped clamping rod passes through the clamping plate and engages with the corresponding connecting plate. Guide plates are installed inside the inlet and outlet ducts. This design effectively solves the problems of cumbersome installation, difficult disassembly, and easy damage to the duct or surrounding structure in traditional composite duct connection methods, as well as uneven internal airflow distribution and lack of effective filtration structures. It improves the convenience of duct installation and disassembly, reduces maintenance costs, and optimizes ventilation and air quality.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and more specifically, to a composite duct structure. Background Technology

[0002] Composite ducts are ventilation duct systems made of rubber and plastic composite insulation materials. They are mainly used in air conditioning systems and can completely replace traditional ducts, valves, and air outlets.

[0003] Based on the above, the inventors have discovered that in traditional duct systems, the connection between composite ducts is usually achieved through flange welding or bolt fastening. This connection method is not only cumbersome to install, requiring specialized tools and technicians, and consuming significant time and manpower, but also difficult to disassemble when maintenance, replacement, or modification is needed later, often causing damage to the duct itself or surrounding structures. Furthermore, the airflow distribution inside traditional composite ducts is not uniform enough, easily generating eddies and resistance, affecting ventilation performance and system energy efficiency. In some applications with high air quality requirements, traditional ducts lack effective filtration structures, failing to effectively filter impurities in the air and thus failing to meet the diverse needs of practical applications. Therefore, in view of this, the inventors have researched and improved the existing structure to provide a composite duct structure with greater practical value. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a composite duct structure that can effectively solve the problems of cumbersome installation, difficult disassembly and easy damage to the duct or surrounding structure in the traditional composite duct connection method, as well as uneven internal airflow distribution and lack of effective filtration structure, so as to improve the convenience of duct installation and disassembly, reduce maintenance costs, and optimize ventilation effect and air quality.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A composite duct structure includes an air inlet duct and an air outlet duct. Both ends of the air inlet duct and the air outlet duct are fixedly connected to connecting plates. Two clamping plates are engaged between the connecting plates at the adjacent ends of the air inlet duct and the air outlet duct. Opening slots are provided on the top of both sides of the clamping plates. T-shaped clamping rods are provided in the opening slots. Return springs are installed on the outer periphery of the T-shaped clamping rods. One end of the T-shaped clamping rods passes through the clamping plates and engages with the corresponding connecting plates. Guide plates are provided inside the air inlet duct and the air outlet duct.

[0009] Furthermore, the connecting plate is provided with a slot, and the plate is engaged with the adjacent ends of the air inlet pipe and the air outlet pipe through the slot.

[0010] Furthermore, a card hole is provided in the card slot, and the card head of the T-shaped card rod is engaged in the corresponding card hole.

[0011] Furthermore, the reset spring is sleeved on the outer periphery of the T-shaped lever, and its two ends are fixedly connected to the inner sidewall of the T-shaped lever and the inner sidewall of the slot, respectively.

[0012] Furthermore, the guide plate has a spiral plate structure and is fixed to the inner sidewalls of the air inlet pipe and the air outlet pipe respectively.

[0013] Furthermore, a slot is provided on one side of the air outlet duct, and a honeycomb filter plate is inserted into the slot.

[0014] Furthermore, one end of the honeycomb filter plate extends outward and is fixedly connected to a mounting base, which is fixedly connected to the outer periphery of the air outlet pipe by bolts.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This solution achieves quick snap-fit ​​fixing between the air inlet pipe and the air outlet pipe by setting a connection structure of a card plate and a T-shaped clamp rod with a reset spring. During installation, it is only necessary to insert the card plate into the slot of the connecting plate and insert the T-shaped clamp rod into the corresponding hole to complete the fixing. This eliminates the need for professional tools and complicated operations required for traditional flange welding or bolt tightening, greatly simplifies the installation process, and reduces the technical requirements for installers. During disassembly, simply pull the T-shaped clamp rod to release the snap-fit, avoiding damage to the air duct or surrounding structure that may be caused by traditional disassembly methods. This significantly improves the convenience of installation and disassembly, and also reduces the manpower and time costs for later maintenance, replacement or modification.

[0018] (2) In this solution, the spiral plate-shaped guide plate can guide and rectify the airflow entering the duct, so that the airflow forms a spiral flow inside the duct, effectively reducing the generation of eddies, reducing airflow resistance, and improving the airflow speed and uniformity in the duct, thereby optimizing the ventilation effect and improving the system's energy efficiency; while the honeycomb filter plate installed in the air outlet duct can effectively filter the passing air, intercepting dust, impurities and other particulate matter in the air, improving the cleanliness of the output air, meeting the usage requirements of occasions with air quality requirements, and expanding the application range of the duct. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 For the present utility model Figure 1 Schematic diagram of the split structure of the honeycomb filter plate;

[0021] Figure 3 For the present utility model Figure 1 Top section view of the structure;

[0022] Figure 4 For the present utility model Figure 1 A schematic diagram showing the disassembled structure at the connection between the air inlet duct and the air outlet duct;

[0023] Figure 5 For the present utility model Figure 4 Enlarged structural diagram of position A in the middle.

[0024] Explanation of the labels in the diagram:

[0025] 1. Air inlet duct;

[0026] 2. Air outlet duct;

[0027] 3. Connecting plate;

[0028] 4. Pallet;

[0029] 5. Opening groove;

[0030] 6. T-shaped locking lever;

[0031] 7. Return spring;

[0032] 8. Deflector plate;

[0033] 9. Card slot;

[0034] 10. Slot;

[0035] 11. Honeycomb filter plate;

[0036] 12. Mounting bracket. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0038] Example:

[0039] Please see Figures 1-5A composite duct structure includes an air inlet duct 1 and an air outlet duct 2. Both ends of the air inlet duct 1 and the air outlet duct 2 are fixedly connected to connecting plates 3. Two clamping plates 4 are engaged between the connecting plates 3 at the adjacent ends of the air inlet duct 1 and the air outlet duct 2. Opening slots 5 are provided on the top of both sides of the clamping plates 4. T-shaped clamping rods 6 are provided in the opening slots 5. Return springs 7 are installed on the outer periphery of the T-shaped clamping rods 6. One end of the T-shaped clamping rods 6 passes through the clamping plates 4 and is engaged and fixed with the corresponding connecting plates 3. Guide plates 8 are provided inside the air inlet duct 1 and the air outlet duct 2. In use, a sealing ring is provided between the adjacent ends of the air inlet duct 1 and the air outlet duct 2 to achieve a sealing effect and prevent gas leakage.

[0040] See Figure 3 and Figure 4 The connecting plate 3 has a slot 9, and the card plate 4 is connected to the adjacent ends of the air inlet pipe 1 and the air outlet pipe 2 through the slot 9.

[0041] See Figure 2 The card slot 9 has a card hole, and the card head of the T-shaped card rod 6 is engaged in the corresponding card hole.

[0042] See Figure 5 The return spring 7 is sleeved on the outer periphery of the T-shaped lever 6, and its two ends are fixedly connected to the inner side wall of the T-shaped lever 6 and the inner side wall of the slot 9, respectively.

[0043] See Figure 3 The guide plate 8 has a spiral plate structure and is fixed on the inner side wall of the air inlet pipe 1 and the air outlet pipe 2 respectively. In use, the spiral plate structure of the guide plate 8 can guide and rectify the airflow entering the air duct, so that the airflow forms a spiral flow inside the air duct, effectively reducing the generation of eddies, reducing airflow resistance, and improving the airflow speed and uniformity in the air duct, thereby optimizing the ventilation effect and improving the system's energy efficiency.

[0044] See Figure 2 A slot 10 is provided on one side of the air outlet duct 2, and a honeycomb filter plate 11 is inserted into the slot 10.

[0045] See Figure 2 One end of the honeycomb filter plate 11 extends outward and is fixedly connected to a mounting base 12. The mounting base 12 is fixedly connected to the outer periphery of the air outlet pipe 2 by bolts.

[0046] Working principle: During installation, align the connecting plate 3 on the inlet duct 1 with the connecting plate 3 on the outlet duct 2. Pull the T-shaped locking rod 6 on the locking plate 4 outward, then insert the locking plate 4 into the slot 9 of the connecting plate 3. After it is fully engaged, release the T-shaped locking rod 6. Under the rebound force of the deformed return spring 7, the T-shaped locking rod 6 will return to its original position and engage in the corresponding locking hole, thus completing the fixing. This eliminates the need for specialized tools and complex operations required for traditional flange welding or bolt tightening, greatly simplifying the installation process and reducing the technical requirements for installers. During disassembly, simply pull the T-shaped locking rod 6 to release the engagement, avoiding potential damage to the duct or surrounding structure that may occur with traditional disassembly methods, significantly improving the efficiency of installation and disassembly. The ease of disassembly reduces the manpower and time costs for later maintenance, replacement, or modification. Meanwhile, the spiral-shaped guide plate 8 guides and rectifies the airflow entering the duct, creating a spiral flow within the duct. This effectively reduces eddies, lowers airflow resistance, and improves the airflow speed and uniformity within the duct, thereby optimizing ventilation and enhancing system efficiency. The honeycomb filter plate 11 installed inside the outlet duct 2 effectively filters the passing air, intercepting dust, impurities, and other particulate matter, improving the cleanliness of the output air, meeting the needs of applications requiring high air quality, and expanding the duct's applicability.

[0047] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., 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 utility model 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 utility model.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A composite duct structure comprising an inlet duct (1) and an outlet duct (2), characterised in that: Both ends of the air inlet pipe (1) and the air outlet pipe (2) are fixedly connected to connecting plates (3). Two clamping plates (4) are engaged between the connecting plates (3) at the ends of the air inlet pipe (1) and the air outlet pipe (2) that are close to each other. Opening slots (5) are provided on the top of both sides of the clamping plates (4). T-shaped clamping rods (6) are provided in the opening slots (5). Return springs (7) are installed on the outer periphery of the T-shaped clamping rods (6). One end of the T-shaped clamping rods (6) passes through the clamping plates (4) and engages with the corresponding connecting plates (3). Guide plates (8) are provided inside the air inlet pipe (1) and the air outlet pipe (2).

2. The composite duct structure of claim 1, wherein: The connecting plate (3) has a slot (9) and the card plate (4) is connected to the adjacent ends of the air inlet pipe (1) and the air outlet pipe (2) through the slot (9).

3. A composite duct structure according to claim 2, wherein: The slot (9) has a card hole, and the card head of the T-shaped card rod (6) is engaged in the corresponding card hole.

4. The composite duct structure of claim 1, wherein: The reset spring (7) is sleeved on the outer periphery of the T-shaped lever (6), and its two ends are fixedly connected to the inner sidewall of the T-shaped lever (6) and the inner sidewall of the slot (9) respectively.

5. The composite air duct structure of claim 1, wherein: The guide plate (8) has a spiral plate structure and is fixed on the inner side wall of the air inlet pipe (1) and the air outlet pipe (2), respectively.

6. The composite duct structure of claim 1, wherein: A slot (10) is provided on one side of the air outlet pipe (2), and a honeycomb filter plate (11) is inserted into the slot (10).

7. A composite duct structure according to claim 6, wherein: One end of the honeycomb filter plate (11) extends outward and is fixedly connected to a mounting base (12), which is fixedly connected to the outer periphery of the air outlet pipe (2) by bolts.

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