CN214945127U - Energy-conserving axial fan of external rotor - Google Patents
Energy-conserving axial fan of external rotor Download PDFInfo
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- CN214945127U CN214945127U CN202120680433.1U CN202120680433U CN214945127U CN 214945127 U CN214945127 U CN 214945127U CN 202120680433 U CN202120680433 U CN 202120680433U CN 214945127 U CN214945127 U CN 214945127U
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Abstract
The utility model relates to an external rotor energy-saving axial flow fan, which is used for air conditioning and refrigeration technology; the axial installation size is small, and the structure is compact. The outer rotor energy-saving axial flow fan mainly comprises a flow guide panel, an axial flow wind wheel, an outer rotor motor and a mesh enclosure assembly. Particularly, the adopted aluminum plate stamping blade has the characteristics of light weight and good performance, and has higher strength, and the three-dimensional design aluminum blade can effectively improve the pneumatic performance; the flow guide panel is provided with a flow collector-shaped inlet unit, a cylindrical flow guide unit and a diffuser-shaped supercharging unit, the fan is high in static pressure efficiency and low in noise, an installation space is reserved, and the purpose of further improving the effect and reducing the noise can be achieved by adopting a rear guide vane, a diffuser and the like in an extensible mode.
Description
Technical Field
The utility model belongs to the technical field of the fan, concretely relates to energy-conserving axial fan of external rotor.
Background
The energy efficiency indexes of electrical equipment are more and more emphasized, a mandatory energy efficiency grade inspection and certification system is developed in Europe and the like, and development plans of 'carbon peak reaching' and 'carbon neutralization' are also formulated in China. As key equipment in industries such as refrigeration and air conditioning, the electric quantity consumption of the ventilator accounts for about 50% of the total electric quantity consumed by the equipment; under the macroscopic situation of energy conservation and emission reduction, the energy efficiency index of the ventilator is gradually improved, and most of the ventilators on the market have the problems of low energy efficiency and high noise, so that the development requirements of the refrigeration industry cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model designs an external rotor energy-saving axial flow fan, which has small axial installation size and compact structure; particularly, the adopted aluminum plate stamping blade has the characteristics of light weight and good performance, and has higher strength, and the impeller with three-dimensional design can effectively improve the pneumatic performance; the flow guide panel is provided with a flow collector-shaped inlet unit, a cylindrical flow guide unit and a diffuser-shaped supercharging unit, the fan is high in static pressure efficiency and low in noise, an installation space is reserved, and the purpose of further improving the effect and reducing the noise can be achieved by adopting a rear guide vane, a diffuser and the like in an extensible mode.
The utility model adopts the following technical scheme:
an outer rotor energy-saving axial flow fan comprises a flow guide panel, an axial flow impeller, an outer rotor motor and a mesh enclosure assembly, wherein the axial flow impeller comprises a mounting seat and 3-9 aluminum blades connected to the mounting seat, and the aluminum blades are connected to the outer rotor motor through the mounting seat; one end of the mesh enclosure component is fixed on the flow guide panel, the other end of the mesh enclosure component fixedly supports the outer rotor motor, the flow guide panel integrates a plurality of functional units, the mesh enclosure component comprises a collector-shaped inlet unit, a cylindrical flow guide unit and a diffuser-shaped supercharging unit, and the axial-flow impeller is arranged in the cylindrical flow guide unit of the flow guide panel. The external rotor motor may be an alternating current asynchronous motor (AC), or a direct current motor (EC).
Preferably, the aluminum blade is formed by punching or casting an aluminum plate; the aluminum blade is connected to the mount by rivets or bolts.
Preferably, the mounting seat of the axial flow impeller is of a whole-ring structure or a split structure.
Preferably, the mounting seat of the integral ring type structure is provided with a cylindrical flange at the position matched with the outer rotor motor, and the cylindrical flange is welded and fixed with the outer rotor motor.
Preferably, the mounting seats of the split structure are respectively tightly attached to the outer rotor motor and welded and fixed.
Preferably, the mounting seat of the axial flow impeller is provided with a raised reinforcing rib, and the matching surface on the mounting seat of the axial flow impeller is a three-dimensional curved surface and is tightly attached to the surface of the aluminum blade.
Preferably, a flange is provided behind the diffuser-like pressurizing unit.
Preferably, the surface of the diffuser-shaped pressurizing unit is expanded in a conical shape, and the conical angle is generally 6-30 degrees.
Preferably, the net cover component is fixedly connected with the diversion panel through bolts.
The utility model has the advantages that: when the axial flow fan operates, fluid in the space on the suction side gradually and quickly flows in through the flow guide panel inner collector-shaped inlet unit; the axial flow impeller works on the inflow fluid in the cylindrical diversion unit of the diversion shell, and because the axial flow impeller has good pneumatic performance, the backflow loss of the fluid passing through the axial flow impeller is small, and the efficiency of the fan is obviously improved; the conical expansion structure of the diffuser-shaped pressurizing unit of the guide shell expands the air flow, and the static pressure efficiency of the axial flow fan is further improved. The utility model discloses an aluminum plate stamping forming blade can effectively reduce the mould cost, alleviate thereby impeller weight promotes the reliability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded view of the overall structure of the present invention;
fig. 3 is a half sectional view of the blower of the present invention;
fig. 4 is a top perspective view of the fan of the present invention;
fig. 5 is a top view of the structure of the split impeller of the fan of the present invention;
fig. 6 is a three-dimensional top view of the split impeller structure of the fan of the present invention;
fig. 7 is a top view of the structure of the whole-ring impeller of the blower of the present invention;
fig. 8 is a three-dimensional top view of the whole ring type impeller structure of the fan of the present invention;
fig. 9 is a partial detail view of the fan blade mount of the present invention.
Fig. 10 is a partial cross-sectional view of the fan guide panel of the present invention.
Detailed Description
The following describes the present invention in further detail with reference to the attached drawings and examples.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, an external rotor energy-saving axial flow fan includes a flow guide panel 1, a mesh enclosure assembly 2, an external rotor motor 3, and an axial flow impeller 4, wherein one end of the mesh enclosure assembly is fixed on the flow guide panel, and the other end of the mesh enclosure assembly is fixedly supported on the external rotor motor.
The diversion panel 1 is arranged on the equipment or the fixed platform of a user through a circle of bolt holes 11 on the square plane of the diversion panel; the outlet of the diversion panel is provided with a flange 12, the flange 12 is provided with a rivet nut, and the mesh enclosure component 2 is connected with the outlet flange 12 of the diversion panel through a bolt.
An axial flow impeller 4 is arranged in the flow guide panel 1; the middle part of the axial flow impeller 4 is arranged on a rotor shell of the outer rotor motor 3, so that the axial installation space is saved, and the structure is more compact.
The middle part of the mesh enclosure component 2 is provided with a supporting disk 21 for supporting the outer rotor motor 3; the support plate 21 bears the rotation torque, axial force and gravity from the outer rotor motor 3, and stably supports the outer rotor motor 3.
The axial-flow impeller 4 is formed by installing aluminum blades 41 which are made by punching 3-7 aluminum plates on an installation seat 42 through rivets 43; the mounting seat 42 can be a split structure or a whole ring structure, and is attached to the outer rotor motor 3, and the axial flow impeller 4 and the rotor of the outer rotor motor 3 are mounted on the same axis. The split structure is shown in fig. 5 and 6; the full ring structure is shown in fig. 7 and 8. The mounting block 42 may or may not have a cylindrical flange 44. As shown in fig. 9, the mounting seat 42 of the axial flow impeller 4 is provided with a raised reinforcing rib 421, which has the function of enhancing rigidity; the fitting surface 422 of the mounting seat 42 is a three-dimensional curved surface, and is tightly attached to the surface of the aluminum blade.
As shown in fig. 10, the flow guide panel integrates a plurality of functional units including a collector-shaped inlet unit 13, a cylindrical-shaped flow guide unit 14, and a diffuser-shaped pressurizing unit 15.
The aluminum blade of the outer rotor energy-saving axial flow fan is formed by stamping an aluminum plate, the aluminum blade is connected with the mounting seat through a rivet to form an axial flow impeller, and the axial flow impeller is mounted on the outer rotor motor, so that the structure is compact, and the axial size is small; the aluminum blade is designed into a space twisting blade, so that the airflow vortex loss is reduced, and the pneumatic performance is improved. When the outer rotor energy-saving axial flow fan runs, fluid in the space of the suction side gradually and quickly flows in through the flow guide panel collector-shaped inlet unit; the axial flow impeller works on the convection fluid in the cylindrical diversion unit of the diversion shell, and because the clearance between the axial flow impeller and the diversion shell is small, the backflow loss of the fluid passing through the clearance is small, and the efficiency of the fan is high; the diffuser-shaped pressurizing unit of the guide shell enhances the fluid guide effect, the fan performance is better, and meanwhile, the guide shell expands the structure through the cone of the diffuser-shaped pressurizing unit, so that the static pressure efficiency of the axial flow fan is further improved.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (9)
1. The utility model provides an energy-conserving axial fan of outer rotor, comprises drainage panel (1), axial compressor impeller (4), external rotor motor (3) and screen panel subassembly (2), its characterized in that: the axial flow impeller (4) is composed of a mounting seat (42) and 3-9 aluminum blades (41) connected to the mounting seat (42), and the aluminum blades (41) are connected to the outer rotor motor (3) through the mounting seat (42); one end of the net cover component (2) is fixed on the flow guide panel (1), the other end of the net cover component is fixedly supported with the outer rotor motor (3), the flow guide panel (1) is integrated with a plurality of functional units, the functional units comprise a collector-shaped inlet unit (13), a cylindrical flow guide unit (14) and a diffuser-shaped supercharging unit (15), and the axial-flow impeller is arranged in the flow guide panel cylindrical flow guide unit (14).
2. The external rotor energy-saving axial flow fan of claim 1, wherein: the aluminum blade (41) is formed by punching or casting an aluminum plate; the aluminum blade (41) is connected to the mounting base (42) by rivets or bolts.
3. The external rotor energy-saving axial flow fan of claim 1, wherein: the mounting seat (42) of the axial flow impeller (4) is of a whole ring type structure or a split type structure.
4. The external rotor energy-saving axial flow fan of claim 1, wherein: the mounting seat (42) of the integral ring type structure is provided with a cylindrical flange (44) at the position matched with the outer rotor motor (3), and the cylindrical flange (44) is welded and fixed with the outer rotor motor.
5. The external rotor energy-saving axial flow fan of claim 1, wherein: the mounting seat (42) of the split structure is tightly attached to the outer rotor motor (3) and welded and fixed.
6. The external rotor energy-saving axial flow fan of claim 1, wherein: the mounting seat (42) of the axial flow impeller (4) is provided with a raised reinforcing rib (421), and a matching surface (422) on the mounting seat (42) of the axial flow impeller (4) is a three-dimensional curved surface and is tightly attached to the surface of the aluminum blade (41).
7. The external rotor energy-saving axial flow fan of claim 1, wherein: and a flanging (12) is arranged behind the diffuser-shaped pressurizing unit (15).
8. The external rotor energy-saving axial flow fan of claim 1, wherein: the surface of the diffuser-shaped pressurizing unit (15) is expanded in a conical shape, and the conical angle is generally 6-30 degrees.
9. The external rotor energy-saving axial flow fan of claim 1, wherein: the net cover component (2) is fixedly connected with the flow guide panel through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680433.1U CN214945127U (en) | 2021-04-02 | 2021-04-02 | Energy-conserving axial fan of external rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680433.1U CN214945127U (en) | 2021-04-02 | 2021-04-02 | Energy-conserving axial fan of external rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945127U true CN214945127U (en) | 2021-11-30 |
Family
ID=79047350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120680433.1U Active CN214945127U (en) | 2021-04-02 | 2021-04-02 | Energy-conserving axial fan of external rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214945127U (en) |
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2021
- 2021-04-02 CN CN202120680433.1U patent/CN214945127U/en active Active
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