Novel air duct assembly

Abstract

The utility model relates to a novel air duct assembly, which belongs to the field of test assemblies and comprises an air duct main body, a spiral fan blade, a positioning unit and a locking unit, a flow guide air duct is arranged on the air duct main body and penetrates through the air duct main body, the spiral fan blade is arranged at the position close to a port of the flow guide air duct, and the positioning unit is connected with the locking unit. The positioning unit is installed between the spiral fan blade and the air duct main body, the locking unit is further installed on the air duct main body close to the spiral fan blade, and the locking unit is used for fixing and pressing the spiral fan blade. The spiral fan blade has the advantages that repeated positioning clamping points on the air duct pipe wall and the fan blade are reduced, the locking unit and other structures are additionally arranged on the air duct pipe wall, the spiral fan blade is easier and more convenient to install, the structure is more stable, the spiral fan blade cannot be disengaged from the existing locking unit even in the air speed testing process, and the service life of the spiral fan blade is prolonged. And meanwhile, the service life of the whole air duct structure is further prolonged.

Description

Technical Field

[0001] The utility model relates to a novel air duct component, belonging to the field of test components. Background Art

[0002] Duct assemblies are a common test structure used in air flow measurement facilities. The spiral blades within the ducts of these ducts can be used to alter parameters such as wind direction, wind speed, and resistance during testing. Therefore, the spiral blades play a crucial role in the duct assembly. The structural stability of the separately manufactured, integrally assembled spiral blades within the duct assembly also impacts test data and the lifespan of the test duct.

[0003] The existing spiral blade and duct assembly method is to install eight spiral blades with two raised locking points on each blade's edge, and 16 corresponding locking slots on the duct wall. By manually checking and installing the spiral blades one by one, the assembly of the duct and spiral blades was basically achieved, allowing for data testing in the corresponding experiments.

[0004] However, the current technical solution still has shortcomings. From the perspective of mold design, a large number of card slots need to be reserved on the wall of the air duct, and the edges of the spiral blades need to have raised card points, so many structures need to be added to the mold. This increases the difficulty of mold opening design. From the assembly perspective, during manual assembly, it is necessary to manually assemble the 16 card points in the direction of the spiral blades, which is time-consuming and labor-intensive, and the assembly process is relatively cumbersome. Due to the limited installation space, accurate and efficient assembly cannot be achieved, and due to the large number of installation points, it is inevitable that the card points of individual spiral blades will be damaged during the installation process, causing the equipment to be scrapped and the cost to increase. From the perspective of service life, during the air duct test, the current assembly structure is prone to damage due to the impact of the test wind speed, because the card points are too small and not firm. The cost of use will also increase accordingly.

[0005] Therefore, to better adapt to the requirements of the test environment, we urgently need to comprehensively upgrade and improve the current design, assembly, and service life. This will achieve the goals of simple design, easy assembly, and extended service life. This will reduce the cost of the air duct and increase the service life of the air duct equipment. Utility Model Content

[0006] In order to overcome the defects of the prior art, the present invention provides a new air duct assembly. The technical solution of the present invention is:

[0007] A novel air duct assembly includes an air duct main body, spiral fan blades, a positioning unit and a locking unit. A guide air duct is provided on the air duct main body, and the guide air duct runs through the air duct main body. The spiral fan blade is provided at a port close to the guide air duct. The positioning unit is installed between the spiral fan blade and the air duct main body. The locking unit is also installed on the air duct main body close to the spiral fan blade. The locking unit is used to fix and compress the spiral fan blade to prevent the spiral fan blade from shifting or falling off under high wind speed or pressure changes.

[0008] The positioning unit includes a card point protrusion and a card slot. The card point protrusion is provided on the edge of the spiral fan blade. The card point protrusion is integrally formed with the spiral fan blade. A card slot corresponding to the card point protrusion is provided on the air duct body. When the spiral fan blade is placed in the guide air duct, the card point protrusion is placed in the corresponding card slot.

[0009] There are several locking units, which are evenly arranged along the circumferential direction of the air guide duct.

[0010] The locking unit includes a sealing plate, a locking hook plate, a locking hook plate fixing seat and an air duct connecting seat. A mounting groove for accommodating the sealing plate is provided on the air duct main body, and the sealing plate is placed in the mounting groove. The air duct connecting seat is provided on one side of the sealing plate, and the air duct connecting seat is snapped onto the air duct main body. The locking hook plate fixing seat is provided on the other side of the sealing plate. A locking hook plate integrally formed with the air duct main body is provided on the air duct main body, and the groove of the locking hook plate faces the air duct connecting seat and is staggered with the air duct connecting seat; when the spiral fan blade is installed in the air duct main body, the edge of the spiral fan blade is placed in the groove of the locking hook plate, and the spiral fan blade is supported by the air duct connecting seat.

[0011] There are four clamping point protrusions, which are evenly arranged along the circumferential direction of the spiral fan blade.

[0012] The guide air duct is arranged in a trumpet shape as a whole.

[0013] The spiral blades are close to the flared end of the guide air duct.

[0014] The advantages of the present invention are: reducing the number of repeated positioning points on the air duct wall and the fan blades, and adding locking units and other structures on the air duct wall, making the installation of the spiral fan blades easier and the structure more stable. Even during wind speed testing, the spiral fan blades will not fall out of the existing locking units, and the service life of the overall air duct structure is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the explosion structure of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the medium spiral fan blade.

[0017] Figure 3 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 4 yes Figure 1 Schematic diagram of the main structure of the locking unit. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to specific embodiments. The advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not limit the scope of the present invention in any way. Those skilled in the art will appreciate that the details and form of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, and that such modifications and replacements fall within the scope of protection of the present invention.

[0020] See also Figures 1 to 4 The utility model relates to a new type of air duct assembly, including an air duct main body 1, a spiral fan blade 2, a positioning unit and a locking unit 5. A guide air duct 6 is provided on the air duct main body 1, and the guide air duct 6 runs through the air duct main body 1. The spiral fan blade 2 is provided at the port close to the guide air duct, and the positioning unit is installed between the spiral fan blade 2 and the air duct main body. The locking unit 5 is also installed on the air duct main body 1 close to the spiral fan blade 2, and the locking unit 5 is used to fix and press the spiral fan blade 2 to prevent the spiral fan blade 2 from being displaced or falling off under high wind speed or pressure change.

[0021] The duct body is the foundational structure of the entire duct assembly, creating the airflow path. It's typically made of durable materials to ensure structural stability under high wind speeds and pressures. A guide duct runs through the duct body, guiding airflow through the duct and achieving air delivery and distribution.

[0022] Spiral blades: A key component of the air duct assembly, spiral blades are installed near the outlet of the guide duct. Their primary function is to change the direction and speed of airflow. Their spiral shape effectively increases air velocity in the duct, improving air flow efficiency. Furthermore, spiral blades can be used to adjust air volume to suit different testing or operating conditions.

[0023] Positioning unit: The positioning unit ensures the proper installation position of the spiral blades within the duct body. Precise positioning ensures a tight fit between the spiral blades and the duct body, ensuring smooth airflow and stable operation. The positioning unit design helps reduce vibration and noise during duct assembly operation, improving overall operating efficiency.

[0024] Locking unit: The locking unit secures and compresses the spiral blades, ensuring their stability within the duct. Installed close to the duct body, it applies pressure to prevent the blades from shifting or falling out under high wind speeds or pressure fluctuations. The locking unit design helps improve the safety and reliability of the duct assembly, ensuring stable operation under various operating conditions.

[0025] The positioning unit includes a locking protrusion 4 and a locking slot 3. The locking protrusion 4 is provided on the edge of the spiral fan blade and is integrally formed with the spiral fan blade. The air duct body 1 is provided with a locking slot 3 corresponding to the locking protrusion 4. When the spiral fan blade 2 is placed in the guide air duct 6, the locking protrusion 4 is placed in the corresponding locking slot 3. The guide air duct 6 is generally arranged in a trumpet shape.

[0026] The setting of the positioning unit realizes:

[0027] Precise positioning: The one-to-one correspondence between the card point protrusions and the card slots can ensure the accurate position of the spiral fan blades in the air duct body, which is crucial to ensuring the uniform distribution of airflow and the performance of the air duct components.

[0028] Simplified assembly: Since the card point protrusion and the spiral fan blade are integrally formed, this reduces additional components and assembly steps, making the entire assembly process simpler and faster.

[0029] Improve assembly efficiency: The design of the positioning unit makes the installation of the spiral fan blade more direct and quick, because the fit between each card point protrusion and the card slot is precise, reducing the time for alignment and adjustment.

[0030] Enhanced structural stability: The combination of the card point protrusion and the card slot provides a mechanical lock, which helps to maintain the stable position of the spiral fan blade when the air duct is running, reducing vibration and noise.

[0031] Improved durability: Due to the cooperation between the card point protrusion and the card slot, the movement of the spiral fan blade in the air duct is reduced, which helps to reduce the wear caused by friction and vibration during long-term operation, thereby improving the durability of the entire air duct assembly.

[0032] There are several locking units, which are evenly arranged along the circumferential direction of the air guide duct.

[0033] The locking unit includes a sealing plate 7, a locking hook plate 10, a locking hook plate fixing seat 8, and an air duct connection seat 9. The air duct body 1 is provided with a mounting groove for accommodating the sealing plate. The sealing plate 7 is placed in the mounting groove. The air duct connection seat 9 is provided on one side of the sealing plate 7. The air duct connection seat 9 is snapped onto the air duct body 1. The locking hook plate fixing seat 8 is provided on the sealing plate 7. The air duct body is provided with a locking hook plate 10 integrally formed with the air duct body 1. The groove of the locking hook plate 10 faces the air duct connection seat 9 and is staggered with the air duct connection seat 9. When the spiral fan blade 2 is installed in the air duct body 1, the edge of the spiral fan blade 2 is placed in the groove of the locking hook plate 10, and the spiral fan blade 2 is supported by the air duct connection seat 9. The locking hook plate 10 is an elastic locking hook plate.

[0034] The setting of the locking unit realizes:

[0035] Easy installation: the sealing plate 7 is placed in the installation groove, and the air duct connection socket 9 is buckled on the air duct body 1, which simplifies the installation steps and facilitates quick assembly and maintenance.

[0036] Good stability: the locking hook plate 10 is an elastic locking hook plate, which can provide a stable locking effect and has a certain elasticity, which can buffer the impact force that may be generated by the spiral fan blade 2 during operation, reduce wear and tear, and extend the service life.

[0037] High reliability: The groove of the locking hook plate 10 is staggered with the air duct connecting seat 9 to ensure that the edge of the spiral fan blade 2 can be firmly placed in the groove. At the same time, the air duct connecting seat 9 provides support for the spiral fan blade 2. This design improves the reliability and stability of the locking unit.

[0038] There are four clamping point protrusions 4 , which are evenly arranged along the circumferential direction of the spiral fan blade 2 .

[0039] The spiral blades 2 are close to the flared end of the guide air duct.

[0040] The main technical problem solved by the present invention is to improve and optimize the design, assembly and service life of the original air duct components. From a design perspective, we have eliminated a large number of raised card points on the edge of the original spiral fan blades, and only retained the four card points on the four groups of blades spaced apart.

[0041] Secondly, the duct wall was optimized, with additional elastic locking hooks added at the assembly locations of the other four sets of blades. The provision of these elastic locking hooks reduces the overall difficulty of manufacturing the duct and spiral blades.

[0042] The working principle of this utility model is:

[0043] When the airflow enters the air duct body, it first passes through the trumpet-shaped structure of the guide air duct, where it is guided and oriented. Then, the airflow encounters the spiral blades, whose spiral shape further changes the direction and speed of the airflow.

[0044] Thanks to the positioning unit, the spiral blades remain precisely positioned in the air duct, while the locking unit ensures that the spiral blades will not shift or fall off when facing high wind speeds or pressure changes, thereby ensuring the stability and reliability of the air duct assembly.

[0045] During assembly, the spiral blades simply need to be manually screwed into the newly added locking hook plate. Due to the elastic properties of the spiral blade's material, it can be slightly deformed and screwed into the locking hook plate. The spiral blade then returns to its original shape, achieving an irreversible snap-fit ​​assembly state and forming a more stable assembly structure. The remaining four blades only need to be assembled and checked at the four locking points. This greatly reduces the difficulty of manual assembly, enhances the assembly strength and stability of the pipeline, and extends the service life of the structure.

[0046] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of air duct assembly, characterized in that: The utility model comprises an air duct main body, a spiral fan blade, a positioning unit and a locking unit. A guide air duct is provided on the air duct main body, and the guide air duct runs through the air duct main body. The spiral fan blade is provided at a port close to the guide air duct. The positioning unit is installed between the spiral fan blade and the air duct main body. The locking unit is also installed on the air duct main body close to the spiral fan blade. The locking unit is used to fix and press the spiral fan blade to prevent the spiral fan blade from being displaced or falling off under high wind speed or pressure change.

2. The novel air duct assembly according to claim 1, characterized in that: The positioning unit includes a card point protrusion and a card slot. The card point protrusion is provided on the edge of the spiral fan blade. The card point protrusion is integrally formed with the spiral fan blade. A card slot corresponding to the card point protrusion is provided on the air duct body. When the spiral fan blade is placed in the guide air duct, the card point protrusion is placed in the corresponding card slot.

3. The novel air duct assembly according to claim 1 or 2, characterized in that: There are several locking units, which are evenly arranged along the circumferential direction of the air guide duct.

4. The novel air duct assembly according to claim 3, characterized in that: The locking unit includes a sealing plate, a locking hook plate, a locking hook plate fixing seat and an air duct connecting seat. A mounting groove for accommodating the sealing plate is provided on the air duct main body, and the sealing plate is placed in the mounting groove. The air duct connecting seat is provided on one side of the sealing plate, and the air duct connecting seat is snapped onto the air duct main body. The locking hook plate fixing seat is provided on the other side of the sealing plate. A locking hook plate integrally formed with the air duct main body is provided on the air duct main body, and the groove of the locking hook plate faces the air duct connecting seat and is staggered with the air duct connecting seat; when the spiral fan blade is installed in the air duct main body, the edge of the spiral fan blade is placed in the groove of the locking hook plate, and the spiral fan blade is supported by the air duct connecting seat.

5. The novel air duct assembly according to claim 2, characterized in that: There are four clamping point protrusions, which are evenly arranged along the circumferential direction of the spiral fan blade.

6. The novel air duct assembly according to claim 5, characterized in that: The guide air duct is arranged in a trumpet shape as a whole.

7. The novel air duct assembly according to claim 6, characterized in that: The spiral blades are close to the flared end of the guide air duct.

8. The novel air duct assembly according to claim 4, characterized in that: The sealing plate, the locking hook plate fixing seat and the air duct connecting seat are integrally formed.

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