CN211039091U - Low-wind-resistance high-flow-speed axial flow fan and air supply equipment - Google Patents
Low-wind-resistance high-flow-speed axial flow fan and air supply equipment Download PDFInfo
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- CN211039091U CN211039091U CN201921172258.4U CN201921172258U CN211039091U CN 211039091 U CN211039091 U CN 211039091U CN 201921172258 U CN201921172258 U CN 201921172258U CN 211039091 U CN211039091 U CN 211039091U
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Abstract
The utility model relates to a high flow speed axial flow fan with low wind resistance and an air supply device, wherein the high flow speed axial flow fan comprises an air duct; the air duct is internally provided with an impeller corresponding to the air inlet of the air duct and a motor for driving the impeller to rotate; a plurality of groups of guide vanes which are circumferentially distributed around the motor are also arranged in the air duct; one side of the guide vane is fixed with the inner wall of the air duct, and the other side of the guide vane is fixed with the motor; the guide vane extends towards the air outlet of the air duct, and the longitudinal section of the guide vane is in the shape of a wing; when the wind turbine works, the motor drives the impeller to rotate, and the multiple groups of guide vanes divide the inner space of the wind barrel to form multiple wind channels, so that the air flow is prevented from generating vortex in the wind barrel, and the air outlet flow is increased; meanwhile, the longitudinal section of the guide vane is in the shape of an airfoil, which is beneficial to reducing wind resistance and improving the flow velocity of air flow, thereby improving the air outlet efficiency. Furthermore, the wind resistance is reduced, so that the workload of the motor is reduced, and the service life of the whole fan is prolonged.
Description
Technical Field
The utility model relates to a fan technical field, more specifically say, relate to a high velocity of flow axial fan and air supply equipment of low windage.
Background
The fan is a machine which increases the gas pressure and discharges the gas by means of the input mechanical energy. The airflow blowing direction of the axial flow fan is the same as the length direction of the fan blade rotating shaft. When present axial fan blows the air current, have that the windage is big and inefficiency not enough, consequently still need to reform transform current fan structure in order to solve above-mentioned not enough.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a high velocity of flow axial fan and an air supply equipment of low windage is provided.
The utility model provides a technical scheme that its technical problem adopted is:
on one hand, the high-flow-speed axial flow fan with low wind resistance comprises an air duct; the air duct is internally provided with an impeller corresponding to the air inlet of the air duct and a motor for driving the impeller to rotate; wherein, a plurality of groups of guide vanes which are circumferentially distributed around the motor are also arranged in the air duct; one side of the guide vane is fixed with the inner wall of the air duct, and the other side of the guide vane is fixed with the motor; the guide vane extends towards the air outlet of the air duct, and the longitudinal section of the guide vane is in the shape of an airfoil.
Preferably, the motor comprises a connecting sleeve coaxially arranged with the air duct; the connecting sleeve comprises a first sleeve fixed with the guide vane and a second sleeve positioned at one end of the first sleeve, which is far away from the air inlet of the air duct; the second sleeve inner diameter is greater than the first sleeve outer diameter; the first sleeve is rotatably connected with an output shaft which drives the impeller to rotate; the second sleeve is provided with a rotor which drives the output shaft to rotate and a stator which corresponds to the rotor in a penetrating manner; the motor further includes a connecting ring connecting the first sleeve and the second sleeve; the connecting ring is provided with a heat dissipation through hole which is opposite to the air inlet of the air duct and is communicated with the inside of the second sleeve.
Preferably, a plurality of groups of guide vanes are uniformly distributed in the air duct in a circumferential manner; the heat dissipation through holes are arranged in a plurality and are uniformly distributed on the connecting ring in a circumferential manner; the air duct, the first sleeve and the two adjacent groups of guide vanes form an air duct together; the heat dissipation through hole is opposite to the air duct.
Preferably, the guide vane is fixed with the first sleeve through a third sleeve; the inner diameter of the third sleeve is matched with the outer diameter of the first sleeve; one end of the guide vane, which deviates from the air inlet of the air duct, is provided with a first positioning groove matched with the second sleeve.
Preferably, the stator includes a stator core fixed to the second sleeve, and an upper insulating wire frame and a lower insulating wire frame respectively penetrating through two ends of the stator core; the upper insulating wire frame and the lower insulating wire frame are both fixed with the stator core; the upper insulating wire frame and the lower insulating wire frame are wound with coils; the stator also comprises a partition plate fixed at one end of the upper insulating wire frame facing the first sleeve; the baffle plate is attached to the connecting ring.
Preferably, the heat dissipation through hole comprises a hole A right opposite to the stator core, a hole B right opposite to the upper insulation wire frame, and a hole C for communicating the hole A and the hole B; the hole C is opposite to the clapboard; a positioning bulge is arranged on the outer circular surface of the stator core; the second sleeve is provided with a second positioning groove corresponding to the positioning bulge;
the motor also comprises a circuit board fixed at one end of the lower insulating wire frame, which is far away from the stator core, and a PCB connector fixed at one side of the circuit board, which is far away from the lower insulating wire frame; the circuit board is electrically connected with the PCB connector; a supporting column and a limiting boss with the same height are arranged at one end, away from the stator core, of the lower insulating wire frame; one end of the limiting boss, which is far away from the lower insulating wire frame, is provided with a positioning column; the circuit board is provided with a positioning through hole corresponding to the positioning column.
Preferably, the high-flow-rate axial flow fan further comprises a plurality of groups of radiating fins which are uniformly distributed around the second sleeve in a circumferential manner; the radiating fins extend towards the air outlet of the air duct and are fixed with the outer circular surface of the second sleeve; a gap is reserved between every two adjacent groups of radiating fins; and one side of the connecting ring facing the first sleeve is provided with a round angle.
Preferably, a bearing is sleeved on the output shaft; and the outer ring of the bearing is fixed with the inner wall of the first sleeve.
Preferably, the thickness of the guide vane gradually decreases along the direction close to the air outlet of the air duct; the impeller comprises a wheel disc connected with the motor and a plurality of groups of rotating blades which are uniformly distributed around the wheel disc in a circumferential manner; a chamfer is arranged at one end of the wheel disc, which is far away from the motor; the total number of the groups of the guide vanes and the total number of the groups of the rotating vanes are both odd numbers.
On the other hand, an air supply device is provided, which is based on the above high-flow-rate axial flow fan, wherein the high-flow-rate axial flow fan is included.
The beneficial effects of the utility model reside in that: when the wind turbine works, the motor drives the impeller to rotate, and the multiple groups of guide vanes divide the inner space of the wind barrel to form multiple wind channels, so that the air flow is prevented from generating vortex in the wind barrel, and the air outlet flow is increased; meanwhile, the longitudinal section of the guide vane is in the shape of an airfoil, which is beneficial to reducing wind resistance and improving the flow velocity of air flow, thereby improving the air outlet efficiency. Furthermore, the wind resistance is reduced, so that the workload of the motor is reduced, and the service life of the whole fan is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic view of an overall structure of a high-flow-rate axial flow fan with low wind resistance according to a first embodiment of the present invention;
fig. 2 is an exploded view of a high-flow-rate axial flow fan with low wind resistance according to an embodiment of the present invention (the wind tunnel, the connecting sleeve, and the stator core are in a sectional state);
fig. 3 is a schematic structural view of a high-flow-speed axial flow fan with low wind resistance according to an embodiment of the present invention (with an impeller hidden);
FIG. 4 is an enlarged view at A in FIG. 3;
fig. 5 is an enlarged view of fig. 3 at B.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
The embodiment of the utility model provides a high velocity of flow axial fan of low windage, as shown in fig. 1, refer to fig. 2 to 5 simultaneously; comprises an air duct 1; an impeller 10 corresponding to the air inlet 180 of the air duct 1 and a motor 11 for driving the impeller 10 to rotate are arranged in the air duct 1; a plurality of groups of guide vanes 12 which are circumferentially distributed around the motor 11 are also arranged in the air duct 1; one side of the guide vane 12 is fixed with the inner wall of the air duct 1, and the other side is fixed with the motor 11; the guide vanes 12 extend towards the air outlet 181 of the air duct 1, and the longitudinal section of the guide vanes 12 is wing-shaped, when in use, the motor 11 drives the impeller 10 to rotate, and the plurality of groups of guide vanes 12 divide the internal space of the air duct 1 to form a plurality of air ducts, so that the air flow is prevented from generating vortex in the air duct 1, and the air outlet flow is increased; meanwhile, the longitudinal section of the guide vane 12 is airfoil-shaped, which is beneficial to reducing wind resistance and improving the flow velocity of air flow, thereby improving the air outlet efficiency. Furthermore, the wind resistance is reduced, so that the workload of the motor 11 is reduced, and the service life of the whole fan is prolonged.
As shown in fig. 2, the electric motor 11 includes a connecting sleeve 13 disposed coaxially with the air duct 1; the connecting sleeve 13 comprises a first sleeve 14 fixed with the guide vane 12 and a second sleeve 15 positioned at one end of the first sleeve 14, which is far away from the air inlet 180 of the air duct; the second sleeve 15 has an inner diameter greater than the outer diameter of the first sleeve 14; the first sleeve 14 is rotationally connected with an output shaft 16 which drives the impeller 10 to rotate; the second sleeve 15 is provided with a rotor 17 for driving the output shaft 16 to rotate and a stator 18 corresponding to the rotor 17 in a penetrating manner, so that the rotor 17 and the stator 18 have corresponding installation spaces, and the installation work can be completed quickly; the electric motor 11 further comprises a connection ring 19 connecting the first sleeve 14 and the second sleeve 15; the connecting ring 19 is provided with a heat dissipation through hole 182 which is opposite to the air duct air inlet 180 and is communicated with the inside of the second sleeve 15, when the impeller 10 rotates, external air enters the air duct 1 to form air flow, and the whole connecting sleeve 13 is T-shaped, so that when the air flow flows in the air duct 1, the air flow can enter the inside of the second sleeve 15 through the heat dissipation through hole 182, the air flow inside the motor 11 is effectively promoted, the heat loss and the working temperature of the motor 11 are reduced, and the service life of the motor 11 is prolonged.
As shown in fig. 3, the multiple groups of guide vanes 12 are circumferentially and uniformly distributed in the air duct 1, so that the whole stress is more uniform; the plurality of heat dissipating through holes 182 are arranged, and the plurality of heat dissipating through holes 182 are circumferentially and uniformly distributed on the connection ring 19; the air duct 1, the first sleeve 14 and the two adjacent groups of guide vanes 12 form an air duct 183 together; the heat dissipating through hole 182 faces the air duct 183, so that the obstruction of the air flow entering the heat dissipating through hole 182 is reduced, and the air flow can enter the heat dissipating through hole 182 quickly to dissipate heat.
As shown in fig. 2, the guide vane 12 is fixed to the first sleeve 14 by a third sleeve 110, and preferably, both the guide vane 12 and the first sleeve 14 are fixed to the third sleeve 110 by welding or bonding; the inner diameter of the third sleeve 110 is matched with the outer diameter of the first sleeve 14, so that the installation is convenient and a certain alignment effect is achieved; one end of the guide vane 12 departing from the air inlet 180 of the air duct is provided with a first positioning groove 184 adapted to the second sleeve 15, so as to complete the alignment operation quickly.
As shown in fig. 2, the stator 18 includes a stator core 111 fixed to the second sleeve 15, and an upper insulation wire frame 112 and a lower insulation wire frame 113 respectively inserted into both ends of the stator core 111; the upper insulating wire frame 112 and the lower insulating wire frame 113 are both fixed with the stator core 111; the upper insulating wire frame 112 and the lower insulating wire frame 113 are wound with coils 114; the stator 18 further includes a spacer 115 fixed to an end of the upper insulating wire frame 112 facing the first sleeve 14; the partition 115 is attached to the connection ring 19, and the partition 115 limits the depth of the stator 18 inserted into the second sleeve 15, so that the uniformity of the batch fan can be ensured when the batch fan is welded.
As shown in fig. 2 and 4, the heat dissipation through-hole 182 includes a hole a185 facing the stator core 111, a hole B186 facing the upper insulation wire frame 112, and a hole C communicating the hole a185 and the hole B186; hole C is opposite to baffle 115; the outer circular surface of the stator core 111 is provided with a positioning bulge 116; the second sleeve 15 is provided with a second positioning groove corresponding to the positioning protrusion 116, so that the stator 18 and the rotor 17 can be accurately positioned, the assembly accuracy is guaranteed, a uniform air gap is formed between the rotor and the stator, and unstable motor performance caused by eccentricity is avoided;
the motor 11 further includes a circuit board 117 fixed to an end of the lower insulating wire frame 113 facing away from the stator core 111, and a PCB connector 118 fixed to a side of the circuit board 117 facing away from the lower insulating wire frame 113; the circuit board 117 is electrically connected with the PCB connector 118; one end of the lower insulating wire frame 113, which is far away from the stator core 111, is provided with a supporting column 125 and a limiting boss 119 which have the same height; one end of the limiting boss 119, which is far away from the lower insulating wire frame 113, is provided with a positioning column 120; the circuit board 117 is provided with a positioning through hole 189 corresponding to the positioning column 120, and when the circuit board 117 is installed, the positioning work of the circuit board 117 can be quickly completed through the matching of the positioning column 120 and the positioning through hole 189, so that the positioning is accurate; meanwhile, the mounting height of the circuit board 117 is determined by the support columns 125 and the limiting bosses 119, so that when the batch fans are assembled or welded, the consistency of the batch fans can be ensured, and automatic production operation is facilitated; meanwhile, the circuit board 117 and the rotor 17 are kept at a certain distance, and interference on rotation of the rotor 17 is avoided.
As shown in fig. 5, the high flow rate axial flow fan further includes a plurality of sets of fins 121 uniformly distributed circumferentially around the second sleeve 15; the heat radiating fins 121 extend towards the air outlet 181 of the air duct and are fixed with the outer circular surface of the second sleeve 15, so that heat on the stator core 111 can be conducted to the heat radiating fins 121 to perform rapid heat radiation; a gap 1810 is reserved between every two adjacent groups of radiating fins 121; the side of the connection ring 19 facing the first sleeve 14 is provided with a rounded corner 1811, and the air flow can flow along the rounded corner 1811 to the gap 1810 to remove heat from the heat sink 121.
As shown in fig. 3, the output shaft 16 is sleeved with a bearing 122; the outer ring of the bearing 122 is fixed with the inner wall of the first sleeve 14, and after the air flow enters the second sleeve 15, the air flow can exchange heat with the bearing 122, so that the effective heat dissipation of the bearing 122 is realized.
As shown in fig. 2 and 3, the thickness of the guide vane 12 gradually decreases in the direction close to the air outlet 181 of the air duct; the impeller 10 comprises a wheel disc 123 connected with the motor 11 and a plurality of groups of rotating blades 124 uniformly distributed around the wheel disc 123 in a circumferential manner, preferably, the wheel disc 123 is in a frustum shape and is in a streamline shape, so that the resistance of air entering the air duct 1 is reduced; the end of the wheel disc 123 facing away from the motor is provided with a chamfer 1812; the total group number of the guide vanes 12 and the total group number of the rotating vanes 124, both of which are odd numbers, not only makes the self balance of the impeller 10 difficult to adjust if the number of the vanes is even and the vanes are uniformly distributed on the circumference, but also easily makes the impeller 10 generate more resonances when the impeller 10 operates at high speed, thereby causing the vanes not to bear the fatigue caused by the resonances for a long time and finally generating the fracture condition, therefore, the total group number of the vanes is set to be an odd number, and the integral stability of the fan during operation can be improved. Preferably, the guide vanes are 7 groups, the rotating vanes are 11 groups, and the vanes are overlapped with each other as much as possible, so that gaps among the rotating vanes are smaller, and the wind catching efficiency and the wind inlet flow rate are improved. Preferably, the longitudinal section of the rotating blade 124 is wing-shaped, which is beneficial to reducing wind resistance and increasing air supply flow; meanwhile, cavitation and eddy currents generated at different cross-section positions in the working process of the fan are reduced, and cavitation erosion and eddy current loss of the fan are reduced.
Example two
The embodiment of the utility model provides an air supply equipment, this air supply equipment include the high velocity of flow axial fan in embodiment one. In the embodiment of the utility model provides an in, air supply equipment includes but not only is limited to the hairdryer.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. A high flow speed axial flow fan with low wind resistance comprises an air duct; the air duct is internally provided with an impeller corresponding to the air inlet of the air duct and a motor for driving the impeller to rotate; the wind barrel is characterized in that a plurality of groups of guide vanes which are circumferentially distributed around the motor are also arranged in the wind barrel; one side of the guide vane is fixed with the inner wall of the air duct, and the other side of the guide vane is fixed with the motor; the guide vane extends towards the air outlet of the air duct, and the longitudinal section of the guide vane is in the shape of an airfoil.
2. The high flow rate axial fan of claim 1, wherein said motor includes a connecting sleeve disposed coaxially with said air duct; the connecting sleeve comprises a first sleeve fixed with the guide vane and a second sleeve positioned at one end of the first sleeve, which is far away from the air inlet of the air duct; the second sleeve inner diameter is greater than the first sleeve outer diameter; the first sleeve is rotatably connected with an output shaft which drives the impeller to rotate; the second sleeve is provided with a rotor which drives the output shaft to rotate and a stator which corresponds to the rotor in a penetrating manner; the motor further includes a connecting ring connecting the first sleeve and the second sleeve; the connecting ring is provided with a heat dissipation through hole which is opposite to the air inlet of the air duct and is communicated with the inside of the second sleeve.
3. The high flow rate axial fan according to claim 2, wherein the sets of guide vanes are circumferentially and uniformly distributed in the air duct; the heat dissipation through holes are arranged in a plurality and are uniformly distributed on the connecting ring in a circumferential manner; the air duct, the first sleeve and the two adjacent groups of guide vanes form an air duct together; the heat dissipation through hole is opposite to the air duct.
4. The high flow rate axial fan of claim 2, wherein the guide vane is fixed to the first sleeve by a third sleeve; the inner diameter of the third sleeve is matched with the outer diameter of the first sleeve; one end of the guide vane, which deviates from the air inlet of the air duct, is provided with a first positioning groove matched with the second sleeve.
5. The high flow rate axial flow fan according to claim 2, wherein the stator includes a stator core fixed to the second sleeve, and an upper insulation wire frame and a lower insulation wire frame respectively penetrating both ends of the stator core; the upper insulating wire frame and the lower insulating wire frame are both fixed with the stator core; the upper insulating wire frame and the lower insulating wire frame are wound with coils; the stator also comprises a partition plate fixed at one end of the upper insulating wire frame facing the first sleeve; the baffle plate is attached to the connecting ring.
6. The high flow rate axial flow fan according to claim 5, wherein the heat dissipating through-hole includes a hole A facing the stator core, a hole B facing the upper insulating wire frame, and a hole C communicating the hole A and the hole B; the hole C is opposite to the clapboard; a positioning bulge is arranged on the outer circular surface of the stator core; the second sleeve is provided with a second positioning groove corresponding to the positioning bulge;
the motor also comprises a circuit board fixed at one end of the lower insulating wire frame, which is far away from the stator core, and a PCB connector fixed at one side of the circuit board, which is far away from the lower insulating wire frame; the circuit board is electrically connected with the PCB connector; a supporting column and a limiting boss with the same height are arranged at one end, away from the stator core, of the lower insulating wire frame; one end of the limiting boss, which is far away from the lower insulating wire frame, is provided with a positioning column; the circuit board is provided with a positioning through hole corresponding to the positioning column.
7. The high flow rate axial fan of claim 5 further comprising a plurality of sets of fins uniformly distributed circumferentially around the second sleeve; the radiating fins extend towards the air outlet of the air duct and are fixed with the outer circular surface of the second sleeve; a gap is reserved between every two adjacent groups of radiating fins; and one side of the connecting ring facing the first sleeve is provided with a round angle.
8. The high flow rate axial flow fan according to claim 2, wherein a bearing is sleeved on the output shaft; and the outer ring of the bearing is fixed with the inner wall of the first sleeve.
9. The high flow rate axial flow fan according to claim 1, wherein the guide vanes gradually decrease in thickness in a direction approaching the outlet of the air duct; the impeller comprises a wheel disc connected with the motor and a plurality of groups of rotating blades which are uniformly distributed around the wheel disc in a circumferential manner; a chamfer is arranged at one end of the wheel disc, which is far away from the motor; the total number of the groups of the guide vanes and the total number of the groups of the rotating vanes are both odd numbers.
10. An air supply device, based on the high-flow-rate axial flow fan as recited in any one of claims 1 to 9, characterized by comprising the high-flow-rate axial flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172258.4U CN211039091U (en) | 2019-07-24 | 2019-07-24 | Low-wind-resistance high-flow-speed axial flow fan and air supply equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172258.4U CN211039091U (en) | 2019-07-24 | 2019-07-24 | Low-wind-resistance high-flow-speed axial flow fan and air supply equipment |
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| CN211039091U true CN211039091U (en) | 2020-07-17 |
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| CN201921172258.4U Active CN211039091U (en) | 2019-07-24 | 2019-07-24 | Low-wind-resistance high-flow-speed axial flow fan and air supply equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425161A (en) * | 2019-07-24 | 2019-11-08 | 河北驰马拓电机科技有限公司 | A kind of the high flow rate axial flow blower and blowing device of low windage |
-
2019
- 2019-07-24 CN CN201921172258.4U patent/CN211039091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425161A (en) * | 2019-07-24 | 2019-11-08 | 河北驰马拓电机科技有限公司 | A kind of the high flow rate axial flow blower and blowing device of low windage |
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