Axial flow fan and air blowing component with adjustable fan blade angle thereof

Abstract

The utility model discloses an axial flow fan and an air blowing component with the adjustable fan blade angle, the axial flow fan and the air blowing component with the adjustable fan blade angle comprise a fan body and the air blowing component with the adjustable fan blade angle, and the air blowing component with the adjustable fan blade angle is connected to a driving assembly of the fan body. The air blowing component with the adjustable fan blade angle comprises an installation body, a plurality of air blowing blades and at least one speed adjusting assembly, the installation body comprises an inner ring body, an outer ring body and a plurality of connecting ribs, each connecting rib is connected between the inner ring body and the outer ring body, and a ventilation window is formed between every two adjacent connecting ribs. The two ends of the air blowing blades are movably arranged on the inner ring body and the outer ring body, the speed adjusting assembly comprises a blocking piece and a locking component, the blocking piece is provided with a plurality of blocking clamping jaws, the blocking clamping jaws axially extend from the blocking piece to form blocking ends, and the blocking ends are located on the rotating paths of the air blowing blades to stop the air blowing blades from rotating. The lock member is provided to the mounting body so as to lock the stopper.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan and an air blowing component with adjustable blade angles thereof. Background Art

[0002] An axial flow fan is a fan in which the gas flows parallel to the fan shaft, and is usually used in situations where the flow rate requirement is high but the pressure requirement is low. During the use of the axial flow fan, the air volume of the axial flow fan needs to be adjusted according to different usage scenarios. In the prior art, the air volume of the axial flow fan is usually adjusted by adjusting the speed of the rotor of the axial flow fan so that the blades in the axial flow fan rotate at different speeds.

[0003] However, since the electronically controlled circuit will be overloaded for a short time when the rotor speed is adjusted by electronic control, the electronically controlled adjustment method is not suitable for adjusting the air volume of the axial flow fan. On the other hand, under the influence of wind pressure, the wind resistance encountered by the blades when rotating is inversely proportional to the rotor speed, so the rotor speed can be changed by adjusting the inclination angle of the blades, thereby achieving the purpose of adjusting the air volume of the axial flow fan.

[0004] Announcement No. CN211370771U discloses an energy-saving axial flow fan. In this scheme, the adjusting screw is rotated, which in turn drives the moving disk to move the four adjusting racks on the front side of the moving disk, driving the adjusting gear meshing with the outer edge of the adjusting rack to rotate, thereby achieving the purpose of adjusting the angle of the blade and ultimately changing the air volume of the energy-saving axial flow fan.

[0005] Although such a solution can adjust the air volume of the axial flow fan by adjusting the blade angle, the space for installing components in the axial flow fan is limited, and the number of adjustment racks corresponds to the number of blades. Therefore, when the number of blades exceeds the predetermined number, the corresponding number of adjustment racks cannot be installed in the space of the axial flow fan. In addition, when the angle of the blade is adjusted by adjusting the screw rod each time the number of blades is increased, the rotational force required to rotate the adjusting screw rod will increase, which will cause metal fatigue of the adjusting screw rod, and then make the blade angle unable to be adjusted again.

[0006] In addition, publication number CN117570056A discloses an axial flow fan. In this scheme, when the rotor drives the fan frame to rotate, the blades will rotate accordingly. The blades will rotate under the influence of wind pressure and press against the limit column, thereby achieving the purpose of adjusting the rotation angle of the blades. At the same time, the air outlet direction of the axial flow fan is adjusted by the different rotation directions of the blades.

[0007] However, this solution can only adjust the rotation direction of the blades, that is, can only adjust the air outlet direction of the axial flow fan, but cannot specifically adjust the rotation angle of the blades, and thus cannot adjust the air volume of the axial flow fan. Utility Model Content

[0008] In order to solve the above technical problems and achieve at least one advantage of the utility model, the utility model provides a fan blade angle adjustable air blowing component, wherein the fan blade angle adjustable air blowing component comprises:

[0009] An installation body, the installation body comprising an inner ring body, an outer ring body and a plurality of connecting ribs, each of the connecting ribs being evenly connected between the inner ring body and the outer ring body, and a ventilation window being provided between two adjacent connecting ribs;

[0010] a plurality of blast blades, both ends of which are rotatably mounted on the outer peripheral wall of the inner ring body and the inner peripheral wall of the outer ring body; and

[0011] At least one speed regulating assembly, the speed regulating assembly includes a blocking member and a locking component, the blocking member has a plurality of stop claws, the stop claws extend from the blocking member in an axial direction, the end of the stop claw away from the blocking member forms a blocking end, the stop claw is arranged to be able to slide back and forth in the axial direction across the ventilation window of the installation body, and the blocking end of the stop claw is maintained in the rotation path of the blast blade to stop the leeward side of the blast blade and prevent the blast blade from rotating when the blast blade is subjected to wind pressure, and the locking component is arranged on the installation body in a manner capable of locking the blocking member.

[0012] According to an embodiment of the utility model, two ends of the blast blade extend axially to form a rotating shaft, and the outer circumferential wall of the inner ring body and the inner circumferential wall of the outer ring body are provided with rotating shaft holes corresponding to the rotating shaft.

[0013] According to an embodiment of the utility model, both ends of the blast blade have shaft holes, and corresponding positions of the outer circumferential wall of the inner ring body and the inner circumferential wall of the outer ring body are provided with shafts.

[0014] According to one embodiment of the utility model, the locking member includes an adjusting member and an elastic member, the adjusting member is lockably arranged on the installation body, one end of the elastic member is pressed against the installation body, and the other end of the elastic member is pressed against the side of the blocking member facing the installation body, the elastic member is arranged to remain compressed, and the side of the blocking member away from the installation body is arranged to press against the adjusting member, and the adjusting member is lockably connected to the installation body.

[0015] According to one embodiment of the utility model, the blocking member has an adjustment through hole, and the adjusting member has a blocking ring portion and an adjusting portion, the blocking ring portion presses against the blocking member toward one side of the installation body, one end of the adjusting portion is connected to the blocking ring portion, and the other end of the adjusting portion is threadedly connected to the installation body in a manner of passing through the adjustment through hole.

[0016] According to an embodiment of the present utility model, the adjusting member has an adjusting hole, and the adjusting hole is used to adjust the depth of the adjusting portion being threadedly connected to the mounting body.

[0017] According to one embodiment of the utility model, the inner ring body also has a plurality of speed regulating slots, the speed regulating slots are located on the outer periphery of the inner ring body, and the speed regulating slots are arranged to correspond to the positions of the stop claws, the stop claws are slidably arranged in the speed regulating slots, and the speed regulating slots are used to limit the sliding direction of the stop claws.

[0018] According to an embodiment of the present invention, the elastic member is implemented to include a spring.

[0019] According to an embodiment of the utility model, the number of the stop claws is consistent with the number of the blast blades.

[0020] In order to solve the above technical problems and achieve at least one advantage of the utility model, the utility model provides a method, wherein the axial flow fan comprises:

[0021] The fan body; and

[0022] For any of the above-mentioned air blowing components with adjustable blade angles, the inner ring body of the fan body of the air blowing component with adjustable blade angles has a mounting through hole, the extension direction of the mounting through hole is coaxial with the driving shaft of the output end of the driving assembly of the fan body, and the mounting through hole is used to connect the output end of the driving assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of a preferred embodiment of the utility model is shown.

[0024] Figure 2 A schematic three-dimensional diagram of the air blowing component with adjustable blade angle is shown from one perspective.

[0025] Figure 3 A schematic three-dimensional diagram of the air blowing component with adjustable blade angle is shown from another viewing angle.

[0026] Figure 4 Shows Figure 2 Schematic diagram of the enlarged view of point A in the middle.

[0027] Figure 5A schematic cross-sectional view of the air blowing component with adjustable blade angle is shown.

[0028] Figure 6 A three-dimensional schematic diagram showing the connection relationship between the installation body and the elastic member is shown.

[0029] Figure 7 A schematic perspective view of the blocking member is shown.

[0030] Figure 8 A schematic perspective view of the adjusting member is shown.

[0031] Fig. 9 A schematic perspective view of the blower blade is shown. DETAILED DESCRIPTION

[0032] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0033] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0034] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] Refer to the attached figure Figures 1 to 9 The axial flow fan and its fan blade angle adjustable air blowing component according to a preferred embodiment of the utility model will be described in detail below. The axial flow fan and its fan blade angle adjustable air blowing component include a fan body and a fan blade angle adjustable air blowing component, and the fan blade angle adjustable air blowing component is movably connected to the output end of a driving component 90 of the fan body. The fan blade angle adjustable air blowing component includes a mounting body 10, a plurality of air blowing blades 20 and at least one speed regulating component 30.

[0036] The installation body 10 includes an inner ring body 11, an outer ring body 12 and a plurality of connecting ribs 13. Each connecting rib 13 is evenly connected between the inner ring body 11 and the outer ring body 12, and a ventilation window 101 is formed between two adjacent connecting ribs 13.

[0037] The inner ring body 11 has a mounting through hole 1101, and the mounting through hole 1101 of the inner ring body 11 is used to connect the output end of the drive assembly 90 of the fan body, so that the inner ring body 11 can be driven to rotate by the drive assembly 90. In other words, the extending direction of the mounting through hole 1101 is coaxial with the drive shaft of the output end of the drive assembly 90.

[0038] Both ends of the blast blade 20 are rotatably mounted on the outer peripheral wall of the inner ring body 11 and the inner peripheral wall of the outer ring body 12 , so that the blast blade 20 can rotate relative to the mounting body 10 .

[0039] As an example, the two ends of the blast blade 20 extend outward in the axial direction to form a rotating shaft 21. Accordingly, a rotating shaft hole is provided at the outer circumferential wall of the inner ring body 11 and the inner circumferential wall of the outer ring body 12 corresponding to the rotating shaft 21 for installing the rotating shaft 21. In this way, the blast blade 20 can rotate relative to the mounting body 10. In a modified embodiment, the rotating shaft holes are respectively provided at both ends of the blast blade 20, and a rotating shaft is respectively provided at the corresponding positions of the outer circumferential wall of the inner ring body 11 and the inner circumferential wall of the outer ring body 12.

[0040] Preferably, at least one blast blade 20 is disposed between two connecting ribs 13 .

[0041] Each of the blast blades 20 has a windward surface and a leeward surface 201 opposite to the windward surface. Specifically, when the blast member with adjustable blade angle is driven by the driving assembly 90 to rotate, the windward surface of the blast blade 20 will collide with the air head-on, thereby forming a wind flow, which will pass through the ventilation window 101 toward the axial direction of the blast member with adjustable blade angle.

[0042] In order to enable those skilled in the art to understand the present invention, in at least one embodiment of the present invention, only the outer circumferential wall of the inner ring body 11 and the inner circumferential wall of the outer ring body 12 are used to set the rotating shaft hole corresponding to the rotating shaft 21, and the two ends of the blast blade 20 extend axially outward to form the rotating shaft 21 as an example.

[0043] In this embodiment, the speed regulating assembly 30 includes a blocking member 31 , which is movably disposed on the mounting body 10 , and has a plurality of stopping claws 311 .

[0044] Preferably, the number of the stopping claws 311 is consistent with the number of the blast blades 20 .

[0045] The stopper claw 311 extends from the blocking member 31 in the axial direction to form a blocking end 31101 at the end away from the blocking member 31. The stopper claw 311 is configured to slide back and forth in the axial direction over the ventilating window 101 of the mounting body 10, and the blocking end 31101 of the stopper claw 311 is maintained on the rotation path of the blast blade 20, so that when the windward surface of the blast blade 20 collides head-on with the air and rotates, the leeward surface 201 will abut against the blocking end 31101, thereby achieving the purpose of stopping the leeward surface 201 of the blast blade 20 by the blocking end 31101.

[0046] It is worth mentioning that the speed regulating assembly 30 also includes a locking member 32, and the locking member 32 connects the blocking member 31 to the mounting body 10 in a relatively locked manner after the stop claw 311 of the blocking member 31 slides in the axial direction relative to the mounting body 10.

[0047] Those skilled in the art can understand that, since the stop claw 311 is configured to slide back and forth in the axial direction across the ventilation window 101 and can be locked in the position after sliding by the locking member 32, the position of the blocking end 31101 relative to the blast blade 20 can be adjusted, and then the blast blade 20 can rotate to different maximum angles due to the leeward surface 201 abutting against the blocking end 31101 when the blast blade 20 follows the rotation of the mounting body 10 and the windward surface of the blast blade 20 hits the air and rotates around the rotating shaft 21. At the same time, since the resistance of the windward surface of the blast blade 20 hitting the air head-on is inconsistent when the blast blade 20 rotates to different maximum blast angles, the greater the resistance of the windward surface of the blast blade 20 hitting the air head-on, the influence of the output end of the drive assembly 90 at the mounting through hole 1101 will slow down the rotation speed of the drive assembly 90. In this way, by adjusting the maximum blowing angle formed by the blowing blades 20, the rotation speed of the driving assembly 90 can be adjusted, and finally the air volume of the blowing component with adjustable blade angle can be adjusted.

[0048] In one embodiment, the locking member 32 includes an adjusting member 321 and an elastic member 322. The adjusting member 321 is lockably connected to the installation body 10. One end of the elastic member 322 is pressed against the installation body 10, and the other end is pressed against the side of the blocking member 31 facing the installation body 10, and the elastic member 322 is configured to remain compressed. The side of the blocking member 31 away from the installation body 10 is configured to press against the adjusting member 321 and is lockably connected to the installation body 10. In this way, the elastic member 322 presses and the adjusting member 321 is relatively pressed against the two sides of the blocking member 31, thereby achieving the purpose of locking the stop claw 311 at the predetermined position of the vent window 101.

[0049] refer to Figure 6 Specifically, the blocking member 31 has an adjustment through hole 3101. Figure 4 and Figure 7 The adjusting member 321 has a retaining ring portion 3211 and an adjusting portion 3212, and the retaining ring portion 3211 is pressed against the blocking member 31 on the side facing the installation body 10. One end of the adjusting portion 3212 is arranged on the side of the retaining ring portion 3211 facing the installation body 10, and the other end of the adjusting portion 3212 is threadedly connected to the installation body 10 in a manner of passing through the adjusting through hole 3101. The adjusting member 321 has an adjusting hole 32101, and the adjusting hole 32101 is used to adjust the depth of the adjusting portion 3212 being threadedly connected to the installation body 10.

[0050] Preferably, the inner diameter of the elastic member 322 is larger than the outer diameter of the adjusting portion 3212 .

[0051] Those skilled in the art will appreciate that, since the two ends of the elastic member 322 are pressed against the inner ring body 11 and the blocking member 31 respectively, and the elastic member 322 is arranged to remain compressed, during the process of adjusting the depth of the adjusting portion 3212 threadedly connected to the inner ring body 11, the blocking member 31 will be kept pressed against the retaining ring portion 3211 of the adjusting member 321 through the elastic member 322, and the stopping claw 311 will slide back and forth in the axial direction across the ventilation window 101 due to the movement of the adjusting member 321, so as to lock the stopping claw 311 at a predetermined position.

[0052] It should be noted that, when the stop claw 311 slides back and forth in the axial direction across the ventilation window 101 , the stop claw 311 may be skewed during sliding and be caught by the adjacent connecting rib 13 .

[0053] In this embodiment, the inner ring body 11 also has a plurality of speed regulating grooves 1102, which are used to limit the sliding direction of the stop claw 311. The speed regulating grooves 1102 are located on the outer periphery of the inner ring body 11, and the speed regulating grooves 1102 are located at positions corresponding to the stop claw 311. The stop claw 311 is slidably arranged in the speed regulating grooves 1102.

[0054] In a modified embodiment, the outer ring body 12 has a plurality of speed regulating slots 1102, and the speed regulating slots 1102 are located at positions corresponding to the stop claws 311, and the speed regulating slots 1102 are used to limit the sliding direction of the stop claws 311. The stop claws 311 are slidably disposed in the speed regulating slots 1102.

[0055] In another variant embodiment, the connecting rib 13 has a plurality of speed regulating slots 1102, and the speed regulating slots 1102 are located at positions corresponding to the stop claws 311, and the speed regulating slots 1102 are used to limit the sliding of the stop claws 311. The stop claws 311 are slidably disposed in the speed regulating slots 1102.

[0056] Preferably, the elastic member 322 is implemented to include a spring.

[0057] It is worth mentioning that since the blocking ends 31101 of the stop claw 311 are respectively provided on both sides of the path of the blower blade 20 rotating around the rotating shaft 21, when the blower blade 20 follows the installation body 10 to rotate in different rotation directions under the drive of the driving assembly 90, the blower blade 20 will rotate in different directions around the rotating shaft 21, and make the blocking end 31101 abut against the leeward side 201 of the blower blade 20, and the windward side of the blower blade 20 will collide head-on with the air, thereby forming a wind flow, and finally achieving the purpose of the blower blade 20 discharging air in different directions.

[0058] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A blasting component with adjustable blade angle, characterized in that: The air blowing component with adjustable blade angle comprises: An installation body, the installation body comprising an inner ring body, an outer ring body and a plurality of connecting ribs, each of the connecting ribs being evenly connected between the inner ring body and the outer ring body, and a ventilation window being provided between two adjacent connecting ribs; a plurality of blast blades, both ends of which are rotatably mounted on the outer peripheral wall of the inner ring body and the inner peripheral wall of the outer ring body; and At least one speed regulating assembly, the speed regulating assembly includes a blocking member and a locking component, the blocking member has a plurality of stop claws, the stop claws extend from the blocking member in an axial direction, the end of the stop claw away from the blocking member forms a blocking end, the stop claw is arranged to be able to slide back and forth in the axial direction across the ventilation window of the installation body, and the blocking end of the stop claw is maintained in the rotation path of the blast blade to stop the leeward side of the blast blade and prevent the blast blade from rotating when the blast blade is subjected to wind pressure, and the locking component is arranged on the installation body in a manner capable of locking the blocking member.

2. The air blowing component with adjustable blade angle according to claim 1, characterized in that: The two ends of the blast blade extend axially to form a rotating shaft, and the outer peripheral wall of the inner ring body and the inner peripheral wall of the outer ring body are provided with rotating shaft holes corresponding to the rotating shaft.

3. The air blowing component with adjustable blade angle according to claim 1, characterized in that: Both ends of the blast blade are provided with rotation shaft holes respectively, and corresponding positions of the outer peripheral wall of the inner ring body and the inner peripheral wall of the outer ring body are provided with rotation shafts.

4. The air blowing component with adjustable blade angle according to any one of claims 1 to 3, characterized in that: The locking member includes an adjusting member and an elastic member, wherein the adjusting member is lockably arranged on the mounting body, one end of the elastic member is pressed against the mounting body, and the other end of the elastic member is pressed against a side of the blocking member facing the mounting body, the elastic member is arranged to remain compressed, and a side of the blocking member away from the mounting body is arranged to press against the adjusting member, and the adjusting member is lockably connected to the mounting body.

5. The air blowing component with adjustable blade angle according to claim 4, characterized in that: The blocking member has an adjustment through hole, and the adjustment member has a blocking ring portion and an adjustment portion, the blocking ring portion presses against the blocking member toward one side of the installation body, one end of the adjustment portion is connected to the blocking ring portion, and the other end of the adjustment portion is threadedly connected to the installation body in a manner of passing through the adjustment through hole.

6. The air blowing component with adjustable blade angle according to claim 5, characterized in that: The adjusting member has an adjusting hole, and the adjusting hole is used to adjust the depth of the adjusting portion being threadedly connected to the mounting body.

7. The air blowing component with adjustable blade angle according to claim 6, characterized in that: The inner ring body also has a plurality of speed regulating slots, which are located on the outer periphery of the inner ring body and are arranged to correspond to the positions of the stop claws. The stop claws are slidably arranged in the speed regulating slots, and the speed regulating slots are used to limit the sliding direction of the stop claws.

8. The air blowing component with adjustable blade angle according to claim 7, characterized in that: The elastic member is implemented to include a spring.

9. The air blowing component with adjustable blade angle according to claim 8, characterized in that: The number of the stop claws is consistent with the number of the blast blades.

10. Axial flow fan, characterized in that: The axial flow fan comprises: The fan body; and The blowing component with adjustable blade angle as described in any one of claims 1 to 9, the inner ring body of the fan body of the blowing component with adjustable blade angle has a mounting through hole, the extension direction of the mounting through hole is coaxial with the driving shaft of the output end of the driving assembly of the fan body, and the mounting through hole is used to connect the output end of the driving assembly.

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