CN219827186U - Axial flow fan with combined current collector - Google Patents
Axial flow fan with combined current collector Download PDFInfo
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- CN219827186U CN219827186U CN202320704164.7U CN202320704164U CN219827186U CN 219827186 U CN219827186 U CN 219827186U CN 202320704164 U CN202320704164 U CN 202320704164U CN 219827186 U CN219827186 U CN 219827186U
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- current collector
- hub
- axial flow
- flow fan
- air inlet
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The utility model discloses an axial flow fan with a combined current collector, which consists of an inner current collector, an outer current collector, a wind wheel, a motor and a connecting piece, wherein: the wind wheel comprises a hub and blades which are integrally arranged outside the hub at equal angles; the output end of the motor is arranged on the hub and is fixedly connected with the hub; the inner diameters of openings at two ends of the inner current collector are different, and the inner current collector is integrally sleeved outside the blade; the outer current collector is sleeved outside the inner current collector, and the outer current collector and the inner current collector are in a fit shape; the outside current collector comprises air inlet portion and air-out portion, the inner wall of air-out portion is fixed with the connecting rod, the tip of connecting rod is fixed with the mount pad, mount pad and motor fixed connection. The utility model adopts the flow collecting and diffusing of the inner and outer collectors, the inner collector is directly connected with the blade to form an integral molding, the gap between the blade top and the inner collector can be eliminated, and the collision between the dynamic and the static is avoided.
Description
Technical Field
The utility model belongs to the technical field of fans, and particularly relates to an axial flow fan with a combined current collector.
Background
Axial fans, i.e. fans with a gas flow direction parallel to the axis of the fan, such as electric fans, air conditioner fans and the like. Axial fans are commonly used in applications where flow requirements are high and pressure requirements are low.
The current collector of the axial flow fan generally plays a role of current collection and diffusion, and in the conventional single wind wheel single current collector design, a sufficient radial dynamic and static gap is required to be reserved between the top positions of wind wheel blades and the current collector, so that the top flow loss exists.
Disclosure of Invention
The utility model aims to provide an axial flow fan with a combined current collector, which solves the problem of flow loss of a blade top of the existing axial flow fan in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an axial flow fan with combined collector, which consists of an inner collector, an outer collector, a wind wheel, a motor and a connecting piece, wherein:
the wind wheel comprises a hub and blades which are integrally arranged outside the hub at equal angles, the output end of the motor is arranged on the hub in a built-in mode, and the hub and the blades are fixedly connected;
the inner diameters of openings at two ends of the inner current collector are different, the inner current collector is integrally sleeved outside the blade, the outer current collector is sleeved outside the inner current collector, and the inner current collector and the outer current collector are in a fit shape;
the outside current collector comprises air inlet portion and air-out portion, the inner wall of air-out portion is fixed with the connecting rod, the tip of connecting rod is fixed with the mount pad, mount pad and motor fixed connection.
Preferably, the connecting piece comprises a first bolt and a second bolt, wherein the first bolt is arranged at the external connection part of the air inlet part and the air outlet part in a penetrating way, and the second bolt is arranged at the connection part of the mounting seat and the motor in a penetrating way.
Preferably, the outer surface of the inner current collector is provided with a bulge, the air inlet part and the air outlet part are provided with grooves matched with the bulge, the inner walls of the air inlet part and the air outlet part are also provided with bosses, and the bosses are in sealing fit with the two ends of the inner current collector.
Preferably, the inside of the hub is hollow, and a heat dissipation hole is further formed in the top end face of the hub.
Preferably, the radian of the bottom of the air outlet part is larger than the radian of the top of the air inlet part.
Preferably, screw holes are formed in the end faces of opposite ends of the air inlet part and the air outlet part at equal angles, and the screw holes of the air inlet part and the air outlet part are located on the same vertical line.
Preferably, a flange is fixed to the exterior of the motor, and the flange is fixed to the hub through bolts.
Compared with the prior art, the utility model has the beneficial effects that:
1. the flow collecting and diffusing of the inner and outer collectors are adopted.
2. The inner current collector is directly connected with the blade into an integral molding, so that the gap between the blade top and the inner current collector can be eliminated, the collision between the dynamic and the static is avoided, and meanwhile, the structural strength and the rigidity of the wind wheel are improved, and the deformation of the blade top is reduced so as to be more consistent with the design point.
3. The outside current collector adopts a combined design that an air inlet end and an air outlet end are connected through bolts; the contact surface between the air inlet end and the air outlet end of the outside collector is provided with a boss and a groove for preventing air leakage; the outer current collector is designed into a structure with an air inlet end and an air outlet end which are assembled, so that the wind wheel integrally formed with the inner current collector is convenient to install, and the flexibility of diffusion design of the inner current collector can be effectively improved.
4. The inner current collector is small in upper part and large in lower part, the outer wall is provided with a bulge, and the air inlet end and the air outlet end of the outer current collector are respectively provided with a boss and a groove which are matched with the molded line change of the inner current collector, so that the fan efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a top view of the present utility model.
Fig. 3 is a cross-sectional view of the present utility model.
Fig. 4 is a cross-sectional view of the connection of the inner collector to the rotor of the present utility model.
Fig. 5 is a cross-sectional view of an external current collector of the present utility model.
In the figure: 1. the internal collector comprises a boss 101, a hub 2, a blade 3, an air inlet part 4, a bolt 5, an air outlet part 6, a connecting rod 7, a mounting seat 8, a motor 9, a bolt 10, a flange 11, a groove 12 and a boss 13.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, the present utility model provides a technical solution: an axial flow fan with combined current collector, the axial flow fan is cylindrical as a whole, has an overall height of 279mm and a maximum outer diameter of 700mm, and consists of an inner current collector 1, an outer current collector, a wind wheel, a motor 9 and a connecting piece, wherein:
the wind wheel comprises a hub 2 and blades 3 which are integrally arranged outside the hub 2 at equal angles, wherein the number n3 of the blades 3 is an odd number, the value range is more than or equal to 5 and less than or equal to 11, and the number is preferably 7; the blade 3 adopts a forward-bending and forward-sweeping ternary flow design; the output end of the motor 9 is arranged on the hub 2 and is fixedly connected with the hub 2;
the ports at the two ends of the inner current collector 1 are of a diffusion structure with a small upper part and a large lower part, and the inner current collector 1 is integrally sleeved outside the blade 3, so that the gap between the blade tip and the inner current collector 1 can be eliminated, the collision between the dynamic and the static is avoided, the structural strength and the rigidity of the wind wheel can be effectively improved, and the deformation of the blade tip is reduced so as to be more consistent with the design point; the outside current collector is sleeved outside the inside current collector 1, and the inside current collector 1 is matched with the further diffusion of the outside current collector, so that the effect of the fan is improved; the outer current collector is designed into a structure of two parts of the air inlet part 4 and the air outlet part 6 which are connected by bolts, so that the installation of the wind wheel integrally formed with the inner current collector 1 is facilitated, and the flexibility of diffusion design of the inner current collector 1 can be improved; the molded lines of the air inlet part 4 and the air outlet part 6 of the outer current collector are matched with the molded lines of the inner current collector 1, so that the diffusion and current collecting effect of the inner current collector and the outer current collector is optimal; the height of the inner current collector 1 is 120mm, the wall thickness is 5mm, the minimum inner diameter is 500mm, and the maximum outer diameter is 525mm;
the radial clearance between the outer wall of the inner current collector 1 and the inner wall of the outer current collector is a, the value range of a is more than or equal to 0.01D and less than or equal to 0.015D, and the preferable clearance is 5mm;
the axial clearance between the outer wall of the inner current collector 1 and the air inlet end of the outer current collector is b, the value range of b is more than or equal to 0.006D and less than or equal to 0.01D, and the preferable clearance is 3mm;
the axial clearance between the outer wall of the inner current collector 1 and the air outlet end of the outer current collector is c, and the value range of c is more than or equal to 0.006D and less than or equal to 0.01D;
the radial dimension of the boss 13 on the air inlet part 4 is D, the value of D is d=a+0.007D, and the preferable radial dimension is 8.5mm;
the radial dimension of the boss 13 on the air outlet portion 6 is e, the value of e=a+0.007D, and the preferred radial dimension is 8.5mm.
The radius of the groove on the air inlet part 4 is R2, the radius of the groove on the air outlet part 6 is R3, and R2=R3=R1;
the outside current collector comprises air inlet portion 4 and air-out portion 6, and the inner wall of air-out portion 6 is fixed with connecting rod 7, and the quantity of connecting rod 7 is n2, and 3 is less than or equal to n2 and is less than or equal to 6, and connecting rod 7 radius is 8mm, and the tip of connecting rod 7 is fixed with mount pad 8, and the thickness of mount pad 8 is 20mm, mount pad 8 and motor 9 fixed connection, wherein outside current collector total height 210mm, wall thickness are 15mm, and wherein air inlet portion 4 height 82mm, air-out portion 6 height 128mm.
In this embodiment, preferably, the connecting piece includes a first bolt 5 and a second bolt 10, the first bolt 5 is installed at the external connection position of the air inlet portion 4 and the air outlet portion 6 in a penetrating manner, the number of the first bolts 5 is n1,4 is less than or equal to n1 is less than or equal to 8, preferably the number of the first bolts 5 is four, and the specification is M10 x 50mm; the second bolt 10 is installed at the joint of the installation seat 8 and the motor 9 in a penetrating way.
In this embodiment, preferably, the outer surface of the inner current collector 1 is formed with a protrusion 101, and if the minimum outer diameter of the blade 3 is D and the radius of the protrusion 101 is R1, r1=0.01d; the air inlet part 4 and the air outlet part 6 are provided with grooves 12 matched with the bulges 101, the grooves 12 are circular arcs, and the radius of the circular arcs is 5mm; the inner walls of the air inlet part 4 and the air outlet part 6 are also provided with a boss 13 for realizing sealing connection to the inner side current collector 1 and preventing air leakage, the boss 13 is in sealing fit with the two ends of the inner side current collector 1, and the height of the boss 13 is h1, preferably 2mm; the width of the boss 13 is b1, the height of the groove 12 is h2, the depth of the groove 12 is 2mm, the width of the groove 12 is b2, h1=h2, and b2=b1+1 mm.
In this embodiment, preferably, the inside of the hub 2 is hollow, and a heat dissipation hole is further formed in the top end surface of the hub 2, the height of the hub 2 is 120mm, and the outer diameter of the iron shell of the motor 9 is 145mm.
In this embodiment, preferably, the bottom of the air outlet portion 6 has a larger arc than the top of the air inlet portion 4.
In this embodiment, preferably, screw holes are formed at equal angles at the end surfaces of opposite ends of the air inlet portion 4 and the air outlet portion 6, and the screw holes of the two are located on the same vertical line.
In this embodiment, preferably, a flange 11 is fixed to the exterior of the motor 9, and the flange 11 is fixed to the hub 2 by bolts.
Although embodiments of the present utility model have been shown and described in detail with reference to the foregoing detailed description, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An axial flow fan with combined current collector, which is characterized in that: the axial flow fan consists of an inner current collector (1), an outer current collector, a wind wheel, a motor (9) and a connecting piece, wherein:
the wind wheel comprises a hub (2) and blades (3) which are integrally arranged outside the hub (2) at equal angles, wherein the output end of the motor (9) is arranged on the hub (2) in a built-in manner, and the hub and the blades are fixedly connected;
the inner diameters of openings at two ends of the inner current collector (1) are different, the inner current collector (1) is integrally sleeved outside the blade (3), the outer current collector is sleeved outside the inner current collector (1), and the inner current collector and the outer current collector are in a fit shape;
the outside current collector comprises air inlet portion (4) and air-out portion (6), the inner wall of air-out portion (6) is fixed with connecting rod (7), the tip of connecting rod (7) is fixed with mount pad (8), mount pad (8) and motor (9) fixed connection.
2. An axial flow fan with a combined current collector according to claim 1, wherein: the connecting piece comprises a first bolt (5) and a second bolt (10), wherein the first bolt (5) is installed at the external connection part of the air inlet part (4) and the air outlet part (6) in a penetrating way; the second bolt (10) is installed at the joint of the installation seat (8) and the motor (9) in a penetrating way.
3. An axial flow fan with a combined current collector according to claim 1, wherein: the outer surface of the inner current collector (1) is provided with a bulge (101), the air inlet part (4) and the air outlet part (6) are provided with grooves (12) matched with the bulge (101), the inner walls of the air inlet part (4) and the air outlet part (6) are also provided with bosses (13), and the bosses (13) are in sealing fit with the two ends of the inner current collector (1).
4. An axial flow fan with a combined current collector according to claim 1, wherein: the inside of wheel hub (2) is the cavity form, and still has seted up the louvre on the top end face of wheel hub (2).
5. An axial flow fan with a combined current collector as claimed in claim 3, wherein: the radian of the bottom of the air outlet part (6) is larger than that of the top of the air inlet part (4).
6. The axial flow fan with combined collector as claimed in claim 5, wherein: screw holes are formed in the end faces of opposite ends of the air inlet part (4) and the air outlet part (6) at equal angles, and the screw holes of the air inlet part and the air outlet part are located on the same vertical line.
7. An axial flow fan with a combined current collector according to claim 1, wherein: a flange (11) is fixed to the outside of the motor (9), and the flange (11) and the hub (2) are fixed through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320704164.7U CN219827186U (en) | 2023-04-03 | 2023-04-03 | Axial flow fan with combined current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320704164.7U CN219827186U (en) | 2023-04-03 | 2023-04-03 | Axial flow fan with combined current collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827186U true CN219827186U (en) | 2023-10-13 |
Family
ID=88250094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320704164.7U Active CN219827186U (en) | 2023-04-03 | 2023-04-03 | Axial flow fan with combined current collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827186U (en) |
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2023
- 2023-04-03 CN CN202320704164.7U patent/CN219827186U/en active Active
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