High-strength anti-deformation cross-flow fan blade

Abstract

The utility model discloses a kind of high-strength anti-deformation cross-flow fan blade, it is related to cross-flow fan blade technical field, including first baffle and second baffle, first baffle and second baffle are two, leaf blade is symmetrically installed with equal distance between first baffle and second baffle, positioning assembly is symmetrically installed in first baffle top, first baffle and second baffle outside are respectively fixed with first assembly ring and second assembly ring, second assembly ring top is symmetrically installed with fixed assembly, second assembly ring bottom is symmetrically fixedly connected with assembly column, first assembly ring top is symmetrically provided with assembly hole, assembly column and assembly hole are inserted connection.The utility model uses above-mentioned structure, can realize the quick accurate butt joint and stable assembly of two groups of cross-flow fan blade, effectively improve the efficiency of installation, guarantee the reliability and stability of structure connection, convenient operation simultaneously and can ensure the operation accuracy after fan blade combination.

Description

Technical Field

[0001] This utility model belongs to the field of cross-flow fan blade technology, and specifically relates to a high-strength, deformation-resistant cross-flow fan blade. Background Technology

[0002] A cross-flow fan is a unique ventilation component with a cylindrical structure. The blades are evenly arranged circumferentially, open at both ends, allowing airflow to enter radially and exit axially. Its advantages include a uniform airflow distribution, a long airflow path, a long delivery distance, and relatively stable airflow. These fans are commonly used in air conditioning indoor units, air curtains, and blowers to achieve a gentle yet wide-area airflow effect. For example, in air conditioning, the cross-flow fan draws in air and accelerates its exit. Combined with duct design, it can evenly distribute cool or warm air to every corner of the room, improving comfort. They are typically made of engineering plastics or metals, possessing characteristics such as light weight, high strength, and wear resistance. Furthermore, different diameters, lengths, and numbers of blades can be designed to meet the specific airflow and pressure requirements of different equipment, making them an indispensable key component in modern ventilation equipment.

[0003] Publication No. "CN214198906U" discloses a cross-flow fan blade and air conditioner. The cross-flow fan blade includes multiple fan blade sections arranged in sequence. In any two adjacent fan blade sections, two opposing surfaces are designated as a first mating surface and a second mating surface, respectively. The first mating surface has a mating groove, and the second mating surface has a snap-fit ​​structure. The snap-fit ​​structure snaps into the mating groove to fix the two adjacent fan blade sections together. This solution achieves a fixed connection between two adjacent fan blade sections through the snap-fit ​​structure and the mating groove, thereby forming a cross-flow fan blade. This solution replaces ultrasonic welding for connecting fan blade sections, eliminating the need for specialized equipment and complex processes, facilitating assembly, and reducing the cost of the cross-flow fan blade.

[0004] Although the above-mentioned utility model replaces the ultrasonic welding connection of the fan blade section, it does not require the use of special equipment and complex processes, and is easy to assemble, thereby reducing the cost of the cross-flow fan blade, the telescopic structure is inserted into the auxiliary groove by elastic force. However, in long-term use, the elastic component will experience elastic fatigue due to high-frequency vibration and temperature changes, which will cause the locking force of the locking head on the auxiliary groove to decrease, and thus cause axial displacement between adjacent fan blade sections, affecting the overall structural stability and operational reliability of the fan blade. Utility Model Content

[0005] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a high-strength, anti-deformation cross-flow fan blade to solve the problem that, in the case of a telescopic structure being locked into the auxiliary slot by elastic force, but after long-term use, the elastic element will experience elastic fatigue due to high-frequency vibration and temperature changes, resulting in a decrease in the locking force of the locking head on the auxiliary slot, which in turn causes axial displacement between adjacent fan blade sections, affecting the overall structural stability and operational reliability of the fan blade.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A high-strength, deformation-resistant cross-flow fan blade includes a first partition and a second partition. There are two first and second partitions. Blades are symmetrically installed at equal distances between the first and second partitions. Positioning components are symmetrically installed on the top of the first partition. A first assembly ring and a second assembly ring are respectively fixedly sleeved on the outer sides of the first and second partitions. Fixing components are symmetrically installed on the top of the second assembly ring. The fixing component includes a fixing post, a first threaded hole, a threaded post, and a knob. The bottom of the second assembly ring has symmetrical through holes, and the fixing post is fixedly connected inside the through holes. The top of the fixing post has a first threaded hole, and the threaded post is threadedly connected inside the first threaded hole. The knob is fixedly connected to the top of the threaded post. The top of the first assembly ring has symmetrical slots, and the fixing post and the slot are plugged in. The bottom of the slot has a second threaded hole, and the threaded post and the second threaded hole are threaded in. This allows for quick and accurate docking and stable assembly of two sets of cross-flow fan blades, effectively improving installation efficiency, ensuring the reliability and stability of the structural connection, and ensuring the operational accuracy of the assembled fan blades.

[0007] As a preferred technical solution, the bottom of the second assembly ring is symmetrically fixedly connected with an assembly post, and the top of the first assembly ring is symmetrically provided with assembly holes. The assembly posts and assembly holes are plugged in. The symmetrical plugging design of the bottom assembly post of the second assembly ring and the top assembly hole of the first assembly ring can realize the rapid alignment and precise installation of the two sets of components. The symmetrical structure improves the assembly efficiency and connection stability, and the operation is simple and can ensure the coaxiality after assembly.

[0008] As a preferred technical solution, the positioning component includes an internal hole, a return spring, and a positioning post. A positioning block is symmetrically fixedly connected to the top of the first partition. An internal hole is opened on one side of the positioning block. A return spring is fixedly connected to the bottom of the internal hole. A positioning post is fixedly connected to the other end of the return spring. The positioning post is slidably connected to the inside of the internal hole. The other end of the positioning post extends out of the outside of the positioning block and is arc-shaped. A positioning groove is symmetrically opened at the bottom of the second partition. The positioning block and the positioning groove are inserted into each other. A positioning hole is opened on one side of the positioning groove. The positioning post and the positioning hole are snapped together. This can realize the precise positioning and rapid assembly of two sets of cross-flow fan blades. The elastic return of the return spring ensures the connection stability. At the same time, the arc-shaped end reduces the insertion resistance, ensuring the convenience of the assembly process and the reliability of the structure.

[0009] As a preferred technical solution, the blade includes an outer layer, a middle layer, and an inner layer. The middle layer is fixedly connected to the outer side of the inner layer, and the outer layer is fixedly connected to the outer side of the middle layer. The outer layer is a streamlined shell made of modified ABS engineering plastic. The middle layer is a three-dimensional mesh skeleton made of glass fiber reinforced polypropylene. The inner layer is a metal bushing assembly made of aluminum alloy. The three-layer structure of the modified ABS engineering plastic streamlined outer layer, the glass fiber reinforced polypropylene three-dimensional mesh skeleton, and the aluminum alloy metal bushing assembly can reduce wind resistance, enhance strength, ensure connection reliability, and balance lightweight and durability.

[0010] In summary, the present invention has the following main advantages: First, in this utility model, two sets of cross-flow fan blades are combined, the first partition plate and the second partition plate are combined, and the fixing post on the second assembly ring is inserted into the fixing groove on the first assembly ring. By rotating the knob, the threaded post and the first threaded hole are controlled to perform threaded transmission, thereby controlling the thread to advance. The threaded post and the second threaded hole at the bottom of the slot are threaded together, which can realize the rapid and accurate docking and stable assembly of the two sets of cross-flow fan blades, effectively improving the installation efficiency, ensuring the reliability and stability of the structural connection, and at the same time, it is easy to operate and can ensure the running accuracy of the fan blades after combination. Secondly, in this utility model, two sets of cross-flow fan blades are combined, and the first partition plate and the second partition plate are combined. At the same time, the positioning block is inserted into the positioning groove. During the insertion process, the squeezing force is applied to the arc-shaped end of the positioning column, causing the positioning column to press against the return spring. The return spring is compressed. When the positioning column moves to the positioning hole, the positioning column pops out and engages with the positioning lock. This can achieve precise positioning and rapid assembly of the two sets of cross-flow fan blades. The elastic return of the return spring ensures the connection is stable. At the same time, the arc-shaped end reduces the insertion resistance, ensuring the convenience of the assembly process and the reliability of the structure. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 3 This is the utility model Figure 2 Enlarged view of part A; Figure 4 This is a schematic diagram of the blade cross-section structure of this utility model.

[0012] Reference numerals: 1. First partition; 2. Second partition; 3. Blade; 31. Outer layer; 32. Middle layer; 33. Inner layer; 4. Positioning block; 5. Positioning groove; 6. First assembly ring; 7. Second assembly ring; 8. Positioning assembly; 81. Internal hole; 82. Return spring; 83. Positioning post; 9. Positioning hole; 10. Fixing assembly; 101. Fixing post; 102. First threaded hole; 103. Threaded post; 104. Knob; 11. Slot; 12. Second threaded hole; 13. Assembly post; 14. Assembly hole; 15. Through hole. Detailed Implementation

[0013] Example refer to Figures 1 to 4 The high-strength anti-deformation cross-flow fan blade described in this embodiment includes a first partition 1 and a second partition 2. There are two first partitions 1 and 2. Blades 3 are symmetrically installed at equal distances between the first partition 1 and the second partition 2. Positioning components 8 are symmetrically installed on the top of the first partition 1. A first assembly ring 6 and a second assembly ring 7 are respectively fixedly sleeved on the outer sides of the first partition 1 and the second partition 2. Fixing components 10 are symmetrically installed on the top of the second assembly ring 7. The fixing assembly 10 includes a fixing post 101, a first threaded hole 102, a threaded post 103, and a knob 104. The bottom of the second assembly ring 7 has symmetrically arranged through holes 15, with the fixing post 101 fixedly connected inside the through holes 15. The top of the fixing post 101 has a first threaded hole 102, with the threaded post 103 threadedly connected inside the first threaded hole 102. The top of the threaded post 103 is fixedly connected to the knob 104. The top of the first assembly ring 6 has symmetrically arranged slots 11, and the fixing post 101 and the slots 11 are for insertion. Next, a second threaded hole 12 is provided at the bottom of the slot 11. The threaded post 103 is threadedly connected to the second threaded hole 12, merging the two sets of cross-flow fan blades and merging the first partition 1 and the second partition 2. At the same time, the fixing post 101 on the second assembly ring 7 is inserted into the fixing groove on the first assembly ring 6. By rotating the knob 104, the threaded post 103 is controlled to perform threaded transmission with the first threaded hole 102, thereby controlling the thread to advance. The threaded post 103 is threadedly connected to the second threaded hole 12 at the bottom of the slot 11.

[0014] refer to Figure 1 The bottom of the second assembly ring 7 is symmetrically fixed with an assembly column 13, and the top of the first assembly ring 6 is symmetrically provided with an assembly hole 14. The assembly column 13 and the assembly hole 14 are inserted into each other. The two sets of cross-flow fan blades are combined, so that the first partition 1 and the second partition 2 are combined. At the same time, the assembly column 13 is inserted into the assembly hole 14.

[0015] refer to Figure 3The positioning component 8 includes an internal hole 81, a return spring 82, and a positioning post 83. A positioning block 4 is symmetrically fixedly connected to the top of the first partition 1. An internal hole 81 is opened on one side of the positioning block 4. A return spring 82 is fixedly connected to the bottom of the internal hole 81. The other end of the return spring 82 is fixedly connected to the positioning post 83. The positioning post 83 is slidably connected to the internal hole 81. The other end of the positioning post 83 extends out of the outside of the positioning block 4 and is arc-shaped. A positioning groove 5 is symmetrically opened at the bottom of the second partition 2. The positioning block 4 is inserted into the positioning groove 5. A positioning hole 9 is opened on one side inside the positioning groove 5. The positioning post 83 is snapped into the positioning hole 9. The two sets of cross-flow fan blades are merged, so that the first partition 1 and the second partition 2 are merged. At the same time, the positioning block 4 is inserted into the positioning groove 5. During the insertion process, the squeezing force applies pressure to the arc-shaped end of the positioning post 83, so that the positioning post 83 presses against the return spring 82, and the return spring 82 is compressed. When the positioning post 83 moves to the positioning hole 9, the positioning post 83 pops out and snaps into the positioning hole.

[0016] refer to Figure 4 The blade 3 includes an outer layer 31, a middle layer 32, and an inner layer 33. The middle layer 32 is fixedly connected to the outer side of the inner layer 33, and the outer layer 31 is fixedly connected to the outer side of the middle layer 32. The outer layer 31 is a streamlined shell made of modified ABS engineering plastic. The middle layer 32 is a three-dimensional mesh skeleton made of glass fiber reinforced polypropylene. The inner layer 33 is a metal bushing assembly made of aluminum alloy. The three-layer structure design, with the outer layer 31 being a streamlined modified ABS engineering plastic shell, the middle layer 32 being a glass fiber reinforced polypropylene three-dimensional mesh skeleton, and the inner layer 33 being an aluminum alloy metal bushing assembly, can reduce wind resistance and improve aerodynamic performance through the streamlined outer layer 31, enhance structural strength and stability through the mesh skeleton of the middle layer 32, and ensure reliable connection with rotating parts through the metal bushing of the inner layer 33, thus achieving a balance between lightweight and durability.

[0017] Operating principle and advantages: First, the two sets of cross-flow fan blades are combined, so that the first partition 1 and the second partition 2 are combined. At the same time, the positioning block 4 is inserted into the positioning groove 5. During the insertion process, the squeezing force is applied to the arc end of the positioning post 83, so that the positioning post 83 presses against the return spring 82. The return spring 82 is compressed. When the positioning post 83 moves to the positioning hole 9, the positioning post 83 pops out and engages with the positioning clip. At the same time, the fixing post 101 on the second assembly ring 7 is inserted into the fixing groove on the first assembly ring 6. Rotating the knob 104 controls the threaded post 103 to perform threaded transmission with the first threaded hole 102, thereby controlling the thread to advance. The threaded post 103 is threadedly connected to the second threaded hole 12 at the bottom of the slot 11. This invention enables rapid and precise docking and stable assembly of two sets of cross-flow fan blades, effectively improving installation efficiency, ensuring the reliability and stability of structural connections, and providing convenient operation while ensuring the running accuracy of the assembled fan blades.

Claims

1. A high-strength, deformation-resistant cross-flow fan blade, comprising a first baffle (1) and a second baffle (2), characterized in that: There are two partitions: the first partition (1) and the second partition (2). Blades (3) are symmetrically installed at equal distances between the first partition (1) and the second partition (2). A positioning component (8) is symmetrically installed on the top of the first partition (1). A first assembly ring (6) and a second assembly ring (7) are respectively fixedly sleeved on the outer side of the first partition (1) and the second assembly ring (7). A fixing component (10) is symmetrically installed on the top of the second assembly ring (7). The fixing component (10) includes a fixing post (101), a first threaded hole (102), a threaded post (103), and a knob (104). The second assembly ring (7) has through holes (15) symmetrically opened at the bottom. The fixing post (101) is fixedly connected inside the through hole (15). The first threaded hole (102) is opened at the top of the fixing post (101). The threaded post (103) is threadedly connected inside the first threaded hole (102). The knob (104) is fixedly connected at the top of the threaded post (103).

2. The high-strength, deformation-resistant cross-flow fan blade according to claim 1, characterized in that: The first assembly ring (6) has symmetrical slots (11) on its top. The fixing post (101) is inserted into the slot (11). The bottom of the slot (11) has a second threaded hole (12). The threaded post (103) is threaded into the second threaded hole (12).

3. The high-strength, deformation-resistant cross-flow fan blade according to claim 1, characterized in that: The bottom of the second assembly ring (7) is symmetrically fixedly connected with an assembly post (13), and the top of the first assembly ring (6) is symmetrically provided with an assembly hole (14). The assembly post (13) and the assembly hole (14) are inserted into each other.

4. The high-strength, deformation-resistant cross-flow fan blade according to claim 1, characterized in that: The positioning component (8) includes an internal hole (81), a reset spring (82), and a positioning post (83). A positioning block (4) is symmetrically fixedly connected to the top of the first partition (1). An internal hole (81) is provided on one side of the positioning block (4). A reset spring (82) is fixedly connected to the bottom of the internal hole (81). A positioning post (83) is fixedly connected to the other end of the reset spring (82). The positioning post (83) is slidably connected to the inside of the internal hole (81). The other end of the positioning post (83) extends out of the outside of the positioning block (4) and is arc-shaped.

5. A high-strength, deformation-resistant cross-flow fan blade according to claim 4, characterized in that: The second partition (2) has symmetrically provided positioning grooves (5) at the bottom. The positioning block (4) is inserted into the positioning groove (5). A positioning hole (9) is provided on one side inside the positioning groove (5). The positioning post (83) is snapped into the positioning hole (9).

6. A high-strength, deformation-resistant cross-flow fan blade according to claim 1, characterized in that: The blade (3) includes an outer layer (31), a middle layer (32) and an inner layer (33). The middle layer (32) is fixedly connected to the outer side of the inner layer (33), and the outer layer (31) is fixedly connected to the outer side of the middle layer (32).

7. A high-strength, deformation-resistant cross-flow fan blade according to claim 6, characterized in that: The outer layer (31) is a streamlined shell, the outer layer (31) is made of modified ABS engineering plastic, the middle layer (32) is a three-dimensional mesh skeleton, the middle layer (32) is made of glass fiber reinforced polypropylene, the inner layer (33) is a metal bushing assembly, the inner layer (33) is made of aluminum alloy.

Images