Cross-flow fan blade with reinforcing rib structure

Abstract

The cross-flow fan blade with the reinforcing rib structure comprises first supporting circular ring plates, and fan blades are fixed to the edge between the first supporting circular ring plates and the edge between the first supporting circular ring plates and second supporting circular ring plates. According to the cross-flow fan blade with the reinforcing rib structure, a bolt is rotated by hand, and the bolt is in threaded connection with a threaded hole, so that the bolt is detached from a circular end plate, then the bolt is upwards pulled to an upper arc-shaped limiting plate by hand, and the upper arc-shaped limiting plate is pulled to the lower arc-shaped limiting plate; and an upper arc-shaped limiting plate drives two second limiting rods to be separated from two second limiting holes at the same time, a second supporting circular ring plate is disengaged from fixation, at the moment, the second supporting circular ring plate, the fan blades and a first supporting circular ring plate can be taken out from the interior of the equipment, and therefore the cross-flow fan blades can be conveniently and rapidly taken out from the interior of the equipment to be cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and in particular to a cross-flow fan blade with a reinforcing rib structure. Background Art

[0002] As a core component for efficient air flow, crossflow impellers' performance directly impacts the equipment's overall efficiency, stability, and service life. Traditional crossflow impellers typically consist of a cylinder and spirally arranged blades. They rotate at high speeds to generate axial airflow and are widely used in household appliances and industrial equipment, including air conditioners, air purifiers, and fresh air systems.

[0003] However, the existing cross-flow fan blades can evenly supply air over a long axial distance, achieve high flow under low wind pressure, and are suitable for large-area air supply and static pressure environments. They are flat and slender and easy to embed into narrow spaces. Integrated installation simplifies equipment. However, the existing cross-flow fan blades are designed as a whole. When a large amount of dust and flocculent impurities appear inside, they need to be cleaned inside, otherwise it will affect the air supply effect. Since the end cover of the cross-flow fan blade is fixed to the end of the cross-flow fan blade by several bolts, and the cross-flow fan blade is installed inside the equipment, it is more inconvenient to remove the bolts, which affects the efficiency of cleaning the cross-flow fan blade. In addition, the cross-flow fan blade is not provided with a noise reduction mechanism, resulting in poor noise reduction effect. In response to the above problems, it is urgent to carry out innovative design based on the original cross-flow fan blade. Summary of the Invention

[0004] The object of the present invention is to provide a cross-flow fan blade with a reinforcing rib structure to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crossflow fan blade with a reinforcing rib structure, comprising a first supporting circular annular plate, wherein fan blades are fixed at the edges between the first supporting circular annular plates and at the edges between the first supporting circular annular plate and the second supporting circular annular plate, and the fan blades are evenly distributed at angles with respect to the central axes of the first supporting circular annular plate and the second supporting circular annular plate;

[0006] A noise reduction mechanism is provided inside the fan blade;

[0007] A circular end plate is attached to one side of the second supporting circular ring plate, a connecting shaft is fixed in the middle of the circular end plate, and a docking mechanism is provided on the connecting shaft, and the circular end plate and the second supporting circular ring plate are fixedly connected by a quick-release structure.

[0008] Preferably, the quick-release structure includes a lower arc-shaped limiting plate, a lower arc-shaped limiting plate is fixed to the bottom of one side of the circular end plate, a first limiting rod is fixed to the inner side of the lower arc-shaped limiting plate, a second limiting hole and a first limiting hole are respectively opened on the top and bottom of the second supporting circular ring plate, the first limiting rod is snap-connected with the first limiting hole, the bottom of the second supporting circular ring plate and the inner side of the lower arc-shaped limiting plate are fitted with each other, the top of one side of the circular end plate is fitted with an upper arc-shaped limiting plate, and the inner side of the upper arc-shaped limiting plate is fixed with a second limiting rod. The second limiting rod is engaged with the second limiting hole, the top of the second supporting circular ring plate is fitted with the inner side of the upper arc-shaped limiting plate, the top of the circular end plate is provided with a positioning arc groove, the inside of the positioning arc groove is engaged with a positioning arc plate, one side of the positioning arc plate is fixedly connected to one side of the upper arc-shaped limiting plate, a clamping block is fixed on the inner side of the positioning arc plate, a clamping slot is provided at the bottom of the positioning arc groove, the clamping block is engaged with the clamping slot, threaded holes are provided in the middle of the clamping block and on both sides of the clamping slot, and the threaded holes are threadedly connected to the bolts.

[0009] Preferably, the end of the bolt is located outside the circular end plate, and two tightening plates are symmetrically fixedly provided on both sides of the end of the bolt.

[0010] Preferably, two of the first limiting rod, the first limiting hole, the second limiting rod and the second limiting hole are symmetrically distributed about the central axis of the circular end plate and the second supporting circular ring plate.

[0011] Preferably, reinforcing rods are fixed at the edges between the first supporting circular plates and at the edges between the first supporting circular plates and the second supporting circular plates, and the reinforcing rods are evenly distributed at angles about the central axes of the first supporting circular plates and the second supporting circular plates.

[0012] Preferably, the fan blade is designed to be arc-shaped, and reinforcing ribs are fixed to the outer wall of the fan blade.

[0013] Preferably, the noise reduction mechanism includes an inner cavity, the inner cavity is opened inside the fan blade, and the inner cavity is filled with polyester fiber sound-absorbing cotton.

[0014] Preferably, the docking mechanism includes an axial hole, the end of the connecting shaft is provided with an axial hole, and the inner side of the axial hole is provided with a key groove.

[0015] Compared with the prior art, the beneficial effect of the present invention is that: the cross-flow fan blade with a reinforcing rib structure can be removed from the circular end plate by manually rotating the bolt, which is threadedly connected to the threaded hole, and then the upper arc-shaped limit plate is pulled upward by hand, so that the upper arc-shaped limit plate drives the two second limit rods and the two second limit holes to separate at the same time, so that the second support circular ring plate is released from the fixation. At this time, the second support circular ring plate, the fan blade and the first support circular ring plate can be taken out from the interior of the device, thereby facilitating the rapid removal of the cross-flow fan blade from the interior of the device for cleaning;

[0016] Pick up the cleaned crossflow fan blade, so that the two first limiting holes on the crossflow fan blade are engaged with the two first limiting rods on the lower arc-shaped limiting plate, then pick up the upper arc-shaped limiting plate, so that the two second limiting rods on the upper arc-shaped limiting plate are engaged with the two second limiting holes on the crossflow fan blade, at this time, the upper arc-shaped limiting plate drives the positioning arc plate to engage with the positioning arc groove, and the positioning arc plate drives the clamping block to engage with the clamping slot, finally, screw the bolts together with the threaded holes on the clamping block and the clamping slot to complete the quick fixation of the crossflow fan blade, thereby facilitating the installation of the crossflow fan blade;

[0017] The polyester fiber sound-absorbing cotton inside the fan blade can absorb part of the noise generated by the cross-flow fan blade, thereby improving the noise reduction efficiency of the cross-flow fan blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fan blade of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation structure of the upper arc-shaped limiting plate and the lower arc-shaped limiting plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation structure of the positioning arc plate of the present invention;

[0022] Figure 5 This is a schematic diagram of the cross-sectional installation structure of the bolt of the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the second supporting circular ring plate of the present invention;

[0024] Figure 7 This is a schematic diagram of the cross-sectional installation structure of the first limiting rod and the second limiting rod of the present invention;

[0025] Figure 8 Schematic diagram of the distribution structure of the first limiting rod and the second limiting rod of the present invention;

[0026] Figure 9 This is a schematic diagram of the second limiting hole distribution structure of the present invention.

[0027] In the figure: 1. First supporting annular plate; 2. Fan blade; 3. Circular end plate; 4. Connecting shaft; 5. Lower arc-shaped limiting plate; 6. First limiting rod; 7. First limiting hole; 8. Upper arc-shaped limiting plate; 9. Second limiting rod; 10. Second limiting hole; 11. Positioning arc-shaped plate; 12. Positioning arc-shaped groove; 13. Block; 14. Slot; 15. Threaded hole; 16. Bolt; 17. Reinforcement rod; 18. Reinforcement rib; 19. Inner cavity; 20. Polyester fiber sound-absorbing cotton; 21. Shaft hole; 22. Keyway; 23. Second supporting annular plate. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-9 The present invention provides a technical solution: a crossflow fan blade with a reinforcing rib structure, comprising a first supporting circular plate 1, with fan blades 2 fixed at the edges between the first supporting circular plates 1 and the edges between the first supporting circular plate 1 and the second supporting circular plate 23, and the fan blades 2 are evenly distributed at angles with respect to the central axes of the first supporting circular plate 1 and the second supporting circular plate 23;

[0030] A noise reduction mechanism is provided inside the fan blade 2;

[0031] A circular end plate 3 is attached to one side of the second supporting circular ring plate 23, a connecting shaft 4 is fixed in the middle of the circular end plate 3, and a docking mechanism is provided on the connecting shaft 4, and the circular end plate 3 and the second supporting circular ring plate 23 are fixedly connected by a quick-release structure.

[0032] The quick-release structure includes a lower arc-shaped limiting plate 5, a lower arc-shaped limiting plate 5 is fixed to the bottom of one side of the circular end plate 3, a first limiting rod 6 is fixed to the inner side of the lower arc-shaped limiting plate 5, a second limiting hole 10 and a first limiting hole 7 are respectively provided on the top and bottom of the second supporting circular ring plate 23, the first limiting rod 6 is snap-connected with the first limiting hole 7, the bottom of the second supporting circular ring plate 23 is fitted with the inner side of the lower arc-shaped limiting plate 5, the top of one side of the circular end plate 3 is fitted with an upper arc-shaped limiting plate 8, the inner side of the upper arc-shaped limiting plate 8 is fixed with a second limiting rod 9, the second limiting rod 9 is snap-connected with the second limiting hole 10, the top of the second supporting circular ring plate 23 is fitted with the inner side of the upper arc-shaped limiting plate 8, and a positioning arc is provided on the top of the circular end plate 3 The shaped groove 12 ensures that the circular end plate 3 can drive the second supporting circular ring plate 23 to rotate through the engagement between the positioning arc plate 11 and the positioning arc groove 12, thereby reducing the force applied by the first limiting rod 6 and the second limiting rod 9 to the second supporting circular ring plate 23, and protecting the first limiting rod 6 and the second limiting rod 9. The interior of the positioning arc groove 12 is engaged with a positioning arc plate 11, and one side of the positioning arc plate 11 is fixedly connected to one side of the upper circular arc limiting plate 8. A clamping block 13 is fixed to the inner side of the positioning arc plate 11. A clamping groove 14 is provided at the bottom of the positioning arc groove 12, and the clamping block 13 is engaged with the clamping groove 14. Threaded holes 15 are provided in the middle of the clamping block 13 and on both sides of the clamping groove 14, and the threaded holes 15 are threadedly connected to the bolts 16.

[0033] The end of the bolt 16 is located outside the circular end plate 3, and two screwing plates are symmetrically fixed on both sides of the end of the bolt 16, so that the bolt 16 can be rotated by screwing the two screwing plates, thereby facilitating the removal and installation of the bolt 16.

[0034] There are two first limiting rods 6, first limiting holes 7, second limiting rods 9 and second limiting holes 10, which are symmetrically distributed about the central axis of the circular end plate 3 and the second supporting circular ring plate 23, thereby increasing the fixing area between the circular end plate 3 and the second supporting circular ring plate 23 and improving the fixing stability between the circular end plate 3 and the second supporting circular ring plate 23.

[0035] Reinforcement rods 17 are fixed at the edges between the first support circular plates 1 and at the edges between the first support circular plates 1 and the second support circular plates 23, and the reinforcement rods 17 are evenly distributed at angles about the central axes of the first support circular plates 1 and the second support circular plates 23, thereby improving the strength between the first support circular plates 1 and between the first support circular plates 1 and the second support circular plates 23, thereby improving the strength of the entire cross-flow fan blade and extending the service life of the cross-flow fan blade.

[0036] The fan blade 2 is designed to be arc-shaped, and a reinforcing rib 18 is fixed to the outer wall of the fan blade 2, which improves the strength of the fan blade 2, reduces the probability of damage to the fan blade 2, and extends the service life of the fan blade 2.

[0037] The noise reduction mechanism includes an inner cavity 19. The inner cavity 19 is opened inside the fan blade 2. The inner cavity 19 is filled with polyester fiber sound-absorbing cotton 20. The polyester fiber sound-absorbing cotton 20 has a good sound absorption effect, which improves the noise reduction performance of the cross-flow fan blade when it is working.

[0038] The docking mechanism includes an axial hole 21. The end of the connecting shaft 4 is provided with an axial hole 21, and the inner side of the axial hole 21 is provided with a key slot 22, so that the output end of the motor in the device can be inserted into the inside of the axial hole 21 and the key slot 22. When the motor is started, the motor can drive the cross-flow fan blade to rotate.

[0039] Working Principle: When using the crossflow fan blade with a reinforcing rib structure, first, the shaft hole 21 and key slot 22 at one end of the crossflow fan blade are engaged with the output end of the motor inside the equipment (such as air conditioning equipment, etc.). Then, the shaft hole 21 and key slot 22 at the other end of the crossflow fan blade are engaged with the shaft end of the bearing seat. Finally, the bearing seat is fixed inside the equipment with screws.

[0040] By starting the motor, the motor can drive the fan blade 2 to rotate, and the polyester fiber sound-absorbing cotton 20 inside the fan blade 2 can absorb part of the noise generated by the cross-flow fan blade, thereby improving the noise reduction efficiency of the cross-flow fan blade;

[0041] When the crossflow fan blades inside the device need to be disassembled for cleaning, the bolts 16 are manually rotated. Since the bolts 16 are threadedly connected to the threaded holes 15, the bolts 16 are removed from the circular end plate 3. Then, the upper arc-shaped limiting plate 8 is pulled upward by hand, so that the upper arc-shaped limiting plate 8 drives the two second limiting rods 9 and the two second limiting holes 10 to separate at the same time, so that the second supporting circular ring plate 23 is released from the fixation. At this time, the second supporting circular ring plate 23, the fan blades 2 and the first supporting circular ring plate 1 can be taken out from the interior of the device, thereby facilitating the quick removal of the crossflow fan blades from the interior of the device for cleaning.

[0042] After the cross-flow fan blades are cleaned, pick up the cleaned cross-flow fan blades so that the two first limiting holes 7 on the cross-flow fan blades are engaged with the two first limiting rods 6 on the lower arc-shaped limiting plate 5. Then pick up the upper arc-shaped limiting plate 8 so that the two second limiting rods 9 on the upper arc-shaped limiting plate 8 are engaged with the two second limiting holes 10 on the cross-flow fan blades. At this time, the upper arc-shaped limiting plate 8 drives the positioning arc plate 11 to engage with the positioning arc groove 12, and the positioning arc plate 11 drives the clamping block 13 to engage with the clamping groove 14. Finally, thread the bolt 16 with the threaded holes 15 on the clamping block 13 and the clamping groove 14 to complete the rapid fixation of the cross-flow fan blades, thereby facilitating the installation of the cross-flow fan blades.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A crossflow fan blade with a reinforcing rib structure, comprising a first supporting annular plate (1), characterized in that: Fan blades (2) are fixed at the edges between the first supporting circular plates (1) and at the edges between the first supporting circular plates (1) and the second supporting circular plates (23), and the fan blades (2) are evenly distributed at angles with respect to the central axes of the first supporting circular plates (1) and the second supporting circular plates (23); A noise reduction mechanism is provided inside the fan blade (2); A circular end plate (3) is attached to one side of the second supporting circular ring plate (23), a connecting shaft (4) is fixed in the middle of the circular end plate (3), and a docking mechanism is provided on the connecting shaft (4), and the circular end plate (3) and the second supporting circular ring plate (23) are fixedly connected via a quick-release structure.

2. The crossflow fan blade with a reinforcing rib structure according to claim 1, characterized in that: The quick-release structure includes a lower arc-shaped limiting plate (5), a lower arc-shaped limiting plate (5) is fixed to the bottom of one side of the circular end plate (3), a first limiting rod (6) is fixed to the inner side of the lower arc-shaped limiting plate (5), a second limiting hole (10) and a first limiting hole (7) are respectively opened on the top and bottom of the second supporting circular ring plate (23), the first limiting rod (6) is snap-fitted to the first limiting hole (7), the bottom of the second supporting circular ring plate (23) and the inner side of the lower arc-shaped limiting plate (5) are fitted together, an upper arc-shaped limiting plate (8) is fitted to the top of one side of the circular end plate (3), a second limiting rod (9) is fixed to the inner side of the upper arc-shaped limiting plate (8), the second limiting rod (9) is snap-fitted to the second limiting hole (10), and the second limiting rod (9) is snap-fitted to the second limiting hole (10). 0) snap-fit ​​connection, the top of the second supporting annular plate (23) is fitted with the inner side of the upper arc-shaped limiting plate (8), a positioning arc groove (12) is provided on the top of the circular end plate (3), a positioning arc plate (11) is snap-fitted inside the positioning arc groove (12), one side of the positioning arc plate (11) is fixedly connected with one side of the upper arc-shaped limiting plate (8), a clamping block (13) is fixed on the inner side of the positioning arc plate (11), a clamping groove (14) is provided at the bottom of the positioning arc groove (12), the clamping block (13) is snap-fitted with the clamping groove (14), a threaded hole (15) is provided in the middle of the clamping block (13) and on both sides of the clamping groove (14), and the threaded hole (15) is threadedly connected with the bolt (16).

3. The crossflow fan blade with a reinforcing rib structure according to claim 2, characterized in that: The end of the bolt (16) is located outside the circular end plate (3), and two screwing plates are symmetrically fixedly provided on both sides of the end of the bolt (16).

4. The crossflow fan blade with a reinforcing rib structure according to claim 2, characterized in that: Two of the first limiting rods (6), the first limiting holes (7), the second limiting rods (9) and the second limiting holes (10) are symmetrically distributed about the central axis of the circular end plate (3) and the second supporting annular plate (23).

5. The crossflow fan blade with a reinforcing rib structure according to claim 1, characterized in that: Reinforcement rods (17) are fixed at the edges between the first supporting circular ring plates (1) and at the edges between the first supporting circular ring plate (1) and the second supporting circular ring plate (23), and the reinforcement rods (17) are evenly distributed at angles with respect to the central axes of the first supporting circular ring plate (1) and the second supporting circular ring plate (23).

6. The crossflow fan blade with a reinforcing rib structure according to claim 1, characterized in that: The fan blade (2) is designed to be arc-shaped, and a reinforcing rib (18) is fixed to the outer wall of the fan blade (2).

7. The crossflow fan blade with a reinforcing rib structure according to claim 1, characterized in that: The noise reduction mechanism comprises an inner cavity (19), the inner cavity (19) is opened inside the fan blade (2), and the inner cavity (19) is filled with polyester fiber sound-absorbing cotton (20).

8. The crossflow fan blade with a reinforcing rib structure according to claim 1, characterized in that: The docking mechanism comprises an axial hole (21), the end of the connecting shaft (4) is provided with the axial hole (21), and the inner side of the axial hole (21) is provided with a key groove (22).

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