CN209856062U - Capacitive outer rotor centrifugal fan - Google Patents
Capacitive outer rotor centrifugal fan Download PDFInfo
- Publication number
- CN209856062U CN209856062U CN201920189399.0U CN201920189399U CN209856062U CN 209856062 U CN209856062 U CN 209856062U CN 201920189399 U CN201920189399 U CN 201920189399U CN 209856062 U CN209856062 U CN 209856062U
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- rotor
- centrifugal fan
- impeller
- shell
- cover
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Abstract
The utility model discloses a capacitanc external rotor centrifugal fan, including last casing, lower cover, impeller, the preceding air outlet that is provided with of last casing, be provided with the air intake in the middle of the last casing, install below the last casing cover down, be provided with fixed recess in the middle of the cover down, install flange in the fixed recess, flange with cover bolted connection down, be provided with the back shaft above the flange, install the stator lamination above the back shaft, the interval is provided with main winding and secondary winding above the stator lamination, install the condenser above the secondary winding. A capacitanc external rotor centrifugal fan, through the equipment that sets up external rotor electric machine and impeller, avoided installing the motor outside the cover down, saved the space, use capacitanc motor simultaneously, increased the starting torque, start fast, the rotational speed is stable to external rotor electric machine installs in the impeller, has the best cooling effect.
Description
Technical Field
The utility model belongs to the centrifugal fan field especially relates to a capacitanc external rotor centrifugal fan.
Background
Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion. However, in the prior art, a motor is generally installed on one side of the centrifugal fan to drive the centrifugal fan to work, the motor occupies a large amount of external space, and a fan is required to be independently equipped for heat dissipation.
Disclosure of Invention
An object of the utility model is to provide a capacitanc external rotor centrifugal fan to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a capacitanc external rotor centrifugal fan, includes upper housing, lower cover, impeller, the preceding air outlet that is provided with of upper housing, be provided with the air intake in the middle of the upper housing, install below the upper housing the cover down, be provided with fixed recess in the middle of the cover down, install flange in the fixed recess, flange with cover bolted connection down, the last back shaft that is provided with of flange, install the stator lamination above the back shaft, the interval is provided with main winding and secondary winding above the stator lamination, install the condenser above the secondary winding, stator lamination both sides are provided with ball bearing, install the rotor shell above the ball bearing, the rotor shell adopts polypropylene, install in the rotor shell outside the impeller, the rotor lamination is installed to the rotor shell inner wall.
Further: the upper machine shell and the lower machine cover are both made of 304 stainless steel and are connected through bolts.
The corrosion resistance of the upper case and the lower cover is ensured by 304 stainless steel, and the upper case is convenient to disassemble and assemble for maintenance through bolt connection.
Further: the main winding and the secondary winding are wound on the stator lamination.
Ensuring that the current flow generates a changing magnetic field.
Further: the supporting shaft and the connecting flange are integrally formed.
The support shaft and the connecting flange are ensured to be firmly connected.
Further: the rotor shell is cylindrical, and the rotor lamination is riveted with the rotor shell together.
The cylindrical shape ensures the balance of the rotation of the rotor shell, and the riveting ensures the stability and reliability of the rotor lamination.
Further: the ball bearing is in interference fit with the support shaft and the rotor shell respectively.
The interference fit ensures that the ball bearing is firm and reliable.
Further: the impeller is made of polypropylene, and the impeller is connected with the rotor shell through bolts.
The polypropylene reduces the mass of the impeller, and the impeller is convenient to disassemble, assemble and replace by bolt connection.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the outer rotor motor and the impeller are assembled, so that the motor is prevented from being arranged outside the lower machine cover, and the space is saved;
2. the capacitor type motor is used, so that the starting torque is increased, the starting is rapid, and the rotating speed is stable;
3. the outer rotor motor is arranged in the impeller, and has the best cooling effect.
Drawings
Fig. 1 is a schematic structural diagram of a capacitive outer rotor centrifugal fan according to the present invention;
fig. 2 is a cross-sectional view of a rotor casing of a capacitive outer rotor centrifugal fan according to the present invention;
fig. 3 is a top view of an upper casing of a capacitive outer rotor centrifugal fan according to the present invention;
fig. 4 is a top view of a lower cover of a capacitive outer rotor centrifugal fan.
In the reference symbols: 1. an upper housing; 2. an air outlet; 3. an air inlet; 4. a rotor case; 5. an impeller; 6. a connecting flange; 7. a support shaft; 8. a ball bearing; 9. rotor lamination; 10. a capacitor; 11. a secondary winding; 12. a stator lamination; 13. a main winding; 14. a lower machine cover; 15. and fixing the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-4, a capacitive outer rotor centrifugal fan comprises an upper casing 1, a lower cover 14, an impeller 5, an air outlet 2 arranged in front of the upper casing 1, an air outlet, an air inlet 3 arranged in the middle of the upper casing 1, an air inlet, the lower cover 14 arranged below the upper casing 1 for sealing the upper casing 1, a fixing groove 15 arranged in the middle of the lower cover 14, a fixing connecting flange 6, a connecting flange 6 arranged in the fixing groove 15, a fixing support shaft 7 arranged on the connecting flange 6, the connecting flange 6 connected with the lower cover 14 by bolts for facilitating disassembly and maintenance, a support shaft 7 arranged on the connecting flange 6, a stator lamination 12 arranged on the support shaft 7 for supporting a main winding 13 and an auxiliary winding 11, the main winding 13 generating a stably changing magnetic field, the auxiliary winding 11 for increasing torque when starting, install condenser 10 above the secondary winding 11, increase starting torque, stator lamination 12 both sides are provided with ball bearing 8, support rotor shell 4 nimble rotation, install rotor shell 4 above the ball bearing 8, fixed rotor lamination 9, rotor shell 4 adopts the polypropylene, guarantees that rotor shell 4 is light, and impeller 5 is installed in the 4 outsides of rotor shell, forms wind-force, and rotor lamination 9 is installed to 4 inner walls of rotor shell, utilizes electromagnetic induction to drive rotor shell 4 rotatory.
The working principle is as follows: when the air-cooled rotor is used, the secondary winding 11 and the main winding 13 generate a variable magnetic field through the stator lamination 12 and generate electromagnetic induction with the rotor lamination 9 to push the rotor lamination 9 to rotate, the rotor lamination 9 rotates to drive the rotor shell 4 and the impeller 5 to rotate to form suction, and air enters the upper shell 1 from the air inlet 3 in the middle of the upper shell 1 and is discharged from the air outlet 2.
Example 2
On the basis of the above-described embodiment:
the upper casing 1 and the lower cover 14 are both made of 304 stainless steel, so that the corrosion resistance of the upper casing 1 and the lower cover 14 is ensured, and the upper casing 1 and the lower cover 14 are connected through bolts, so that the upper casing 1 can be conveniently disassembled and assembled for maintenance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a capacitanc outer rotor centrifugal fan, includes upper casing (1), lower cover (14), impeller (5), its characterized in that: the improved motor stator is characterized in that an air outlet (2) is arranged in front of the upper casing (1), an air inlet (3) is arranged in the middle of the upper casing (1), the lower cover (14) is arranged below the upper casing (1), a fixed groove (15) is arranged in the middle of the lower cover (14), a connecting flange (6) is arranged in the fixed groove (15), the connecting flange (6) is in bolt connection with the lower cover (14), a supporting shaft (7) is arranged on the connecting flange (6), stator laminations (12) are arranged on the supporting shaft (7), a main winding (13) and an auxiliary winding (11) are arranged on the stator laminations (12) at intervals, a capacitor (10) is arranged on the auxiliary winding (11), ball bearings (8) are arranged on two sides of the stator laminations (12), and a rotor shell (4) is arranged on the ball bearings (8), the rotor shell (4) is made of polypropylene, the impeller (5) is installed on the outer side of the rotor shell (4), and rotor laminations (9) are installed on the inner wall of the rotor shell (4).
2. The capacitive outer rotor centrifugal fan of claim 1, wherein: the upper machine shell (1) and the lower machine cover (14) are both made of 304 stainless steel, and the upper machine shell (1) is connected with the lower machine cover (14) through bolts.
3. The capacitive outer rotor centrifugal fan of claim 2, wherein: the main winding (13) and the secondary winding (11) are wound on the stator lamination (12).
4. The capacitive outer rotor centrifugal fan of claim 3, wherein: the supporting shaft (7) and the connecting flange (6) are integrally formed.
5. The capacitive outer rotor centrifugal fan of claim 4, wherein: the rotor shell (4) is cylindrical, and the rotor lamination (9) and the rotor shell (4) are riveted together.
6. The capacitive outer rotor centrifugal fan of claim 5, wherein: the ball bearing (8) is in interference fit with the supporting shaft (7) and the rotor shell (4) respectively.
7. The capacitive outer rotor centrifugal fan of claim 6, wherein: the impeller (5) is made of polypropylene, and the impeller (5) is connected with the rotor shell (4) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920189399.0U CN209856062U (en) | 2019-02-11 | 2019-02-11 | Capacitive outer rotor centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920189399.0U CN209856062U (en) | 2019-02-11 | 2019-02-11 | Capacitive outer rotor centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856062U true CN209856062U (en) | 2019-12-27 |
Family
ID=68931531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920189399.0U Active CN209856062U (en) | 2019-02-11 | 2019-02-11 | Capacitive outer rotor centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856062U (en) |
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2019
- 2019-02-11 CN CN201920189399.0U patent/CN209856062U/en active Active
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