CN217135278U - Air duct structure of axial flux disc type motor - Google Patents
Air duct structure of axial flux disc type motor Download PDFInfo
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- CN217135278U CN217135278U CN201990001342.1U CN201990001342U CN217135278U CN 217135278 U CN217135278 U CN 217135278U CN 201990001342 U CN201990001342 U CN 201990001342U CN 217135278 U CN217135278 U CN 217135278U
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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Abstract
The utility model provides an air flue structure of axial flux disk motor, disk motor main part is equipped with fan housing (8), helping hand fan (7), preceding rotor stationary blade (6), stator dish (5), main fan (4), back rotor stationary blade (3), rotor flange (2) and heat dissipation mount (1) that set up on the same axis line in the past backward in proper order, and the main fan is located in the through-hole of stator dish, and fan housing, stator dish and heat dissipation mount fixed connection are fixed part.
Description
Technical Field
The invention relates to a disc type motor, in particular to an air duct structure of the disc type motor.
Background
The disc type motor has the advantages of small volume and light weight, but the power density of the traditional disc type motor is low, the output efficiency is not high, and the inventor finds the technical scheme of the disc type motor which can break through the bottleneck of the traditional disc type motor through experiments. The axial flux disc type generator is applied to an axial flux disc type generator, improves the heat dissipation efficiency except for improving the output power density and the output efficiency by matching the stator and the rotor, reduces the consumption caused by the temperature rise of the generator, and reduces the line loss, and is beneficial to further improvement of the output efficiency. The effective cooling can obviously improve the magnetic field intensity, improve the current-carrying capacity of the coil and prevent the insulation leakage fault, the current density of the heat balance point of the motor is an important index for measuring the quality of the motor, and the aim of continuously radiating the stator coil with the minimum loss is long-term pursued in the industry.
Disclosure of Invention
The invention aims to provide an air duct structure of an axial flux disc type motor, which is used for obviously improving the current density of a heat balance point of an axial flux disc type generator and improving the output efficiency.
The air duct structure of the axial flux disc type motor is characterized in that: the disc type motor main body sequentially comprises a fan cover, a front rotor fixing piece, a stator disc, a main fan, a rear rotor fixing piece, a rotor flange and a heat dissipation fixing frame which are arranged on the same axis from front to back, through holes capable of penetrating through a power rotating shaft are formed in the centers of the fan cover, the fan cover is concave towards the back, a circle of continuous and complete fan cover side wall and a fan cover end face with the through holes at the front end are arranged, and the back side of the fan cover is open;
the front rotor fixing piece and the rear rotor fixing piece are both annular sheets, one side of the front rotor fixing piece and the rear rotor fixing piece, which is far away from the stator disc, is annular of a magnetic conductive material, and magnet slots are arranged at the positions, corresponding to the stator coils, of one side of the front rotor fixing piece and the stator coils one by one, which face the stator disc;
the main fan is coaxially provided with a pair of flat annular fixed rings, the pair of fixed rings are fixedly connected through a circle of surrounding main fan blades, so that the side surfaces of the main fan are communicated with each other in all directions, the outer diameter of each fixed ring is smaller than the diameter of a through hole of the stator disc, and the pair of fixed rings in an assembled state are axially higher than the side surface profiles of the two sides of the stator disc respectively;
the rotor flange is provided with a flange plate and a connecting cylinder fixed on the inner ring of the flange plate, the inner diameter of the connecting cylinder just can penetrate through the power rotating shaft, and the outer diameter of the connecting cylinder penetrates through a through hole of the main fan;
the fan cover, the stator disc and the heat dissipation fixing frame are fixedly connected to form a fixed part, the rotor flange, the main fan, the front rotor fixing piece and the rear rotor fixing piece are fixedly connected to form a rotating part rotating along with the power rotating shaft at the position close to the through hole through screws in an integrated mode, and the fixed part and the rotating part are arranged in a gap mode.
Furthermore, a booster fan with a central through hole is arranged in front of the front rotor fixing piece, and the booster fan is coaxially and fixedly connected with the front rotor fixing piece into a whole.
Preferably, the booster fan is in the shape of an annular disc with a through hole at the center, a circle of oblique notches which are inclined at the same angle relative to the radial direction are arranged on the periphery around the central through hole, and the disc surface at the oblique notches is folded towards the front side surface to be used as fan blades, so that the booster fan pushes air to flow towards the periphery when rotating along with the power rotating shaft.
Preferably, the outer diameter of the heat dissipation fixing frame is larger than the outer diameter of the side wall of the fan cover, a circle of comb teeth with adjacent gaps are radially arranged on the periphery of the heat dissipation fixing frame, and the diameter of the root of each comb tooth is 5% -45% smaller than the outer diameter of the side wall of the fan cover.
Preferably, the periphery of the fan housing is provided with a convex edge radially outwards, the convex edge is directly contacted with the outer end part of the comb teeth, and the contact part of the convex edge and the comb teeth is fixedly connected with the fan housing and the heat dissipation fixing frame.
Preferably, a heat insulation layer is arranged in front of the heat dissipation fixing frame facing the rotor flange or on the inner side surface of the heat dissipation fixing frame.
The annular back iron and the magnet frame are two separated annular components with equal outer diameters and are fixed into a whole through fastening materials.
Holes or grooves are uniformly distributed on the magnet frame around the through holes and are used for filling and adjusting dynamic balance after being spliced with the annular back iron.
Preferably, the side wall of the fan cover is perpendicular to the end face of the fan cover or is outwardly expanded backwards.
Preferably, a circle of coreless copper coils which correspond to the magnets in the magnet slots in size are arranged on the stator disc around the through hole.
The inventor of the invention provides a new axial magnetic flux disc type motor air duct structure through repeated test and improvement, so that the output efficiency of the coreless disc type motor which is difficult to change for a long time is improved by more than 10 percent compared with the traditional excitation barrel type motor, the output power density is further improved, and the energy efficiency ratio is far higher than that of the traditional excitation barrel type motor.
In the invention, the copper coil is not wrapped by the silicon steel sheet, so that the heat radiation performance of the coil is far higher than that of the coil with the iron core, the coil with the iron core mainly radiates heat through the silicon steel sheet, and the heat conductivity coefficient of the silicon steel sheet is low (less than 15 percent of the heat conductivity coefficient of the copper), thereby limiting the current-carrying capacity and the output power of the conductor.
The enameled copper wire of stator coil is direct naked, with the air contact, and heat radiating area is far more than 2 times bigger than there is iron core stator coil, and the radiating effect is also good.
On the basis of the heat dissipation advantage of the coreless coil, the scheme of the invention constructs a one-way air duct which directly flows through the coil and the heat dissipation components in the motor, and forces the inlet air to flow out after passing through the heat dissipation components to the maximum extent without backflow, so that the integral structure has no redundancy, and 230w of output surplus is brought to the disc motor with the rated power of 3kw only by the load of 2-3 w. The current density at the thermal equilibrium point is doubled from the conventional 8 amps/mm to 16 amps/mm.
The fan cover plays an important role in guiding and radiating air flow, and the air flow entering from the through hole of the fan cover is forced to flow out from the comb tooth gap of the radiating fixing frame in a single direction.
The external air enters the main fan from the fan cover and flows out to the inner side wall of the fan cover along the disk surfaces of the two sides of the stator disk and the disk surfaces of the front rotor fixing pieces and the rear rotor fixing pieces around the main fan under the action of the fan, the external air backwards reaches the comb teeth of the heat dissipation fixing frame under the action of front end wind pressure and flows out from gaps among the comb teeth, the flowing air cover and the heat dissipation fixing frame are made of aluminum alloy materials with good heat conductivity, the air flow flows through copper coils on the disk surface of the stator disk and magnets on one sides of the front rotor fixing pieces and the rear rotor fixing pieces facing the air flow, heat generated by the coil current is directly air-cooled, and the temperature of the permanent magnets is also controlled. The heat of the power equipment transmitted from the power rotating shaft is dissipated through the air flow flowing through the heat radiator which is formed by the rotor flange directly contacting with the power rotating shaft, the main fan fixedly connected into a whole, the booster fan, the rotor fixing sheet and the heat dissipation fixing frame, so that the heat dissipation area of the heat dissipation air flow is the largest.
The booster fan is thin and small in diameter, and air flow brought to the inner side wall of the fan cover by the main fan is forced to blow to an air flow outlet at the rear part by using extremely small rotational inertia, so that hot air flow is prevented from flowing back, and the air flow flows orderly in a unidirectional mode.
The front rotor fixing piece and the rear rotor fixing piece simultaneously play roles in fixing the magnet, forming a magnetic conduction loop and constructing a heat dissipation airflow channel, forcing heat dissipation airflow to flow through the stator coil and the magnet and bringing out heat of the power rotating shaft along with the airflow, intercepting radiation heat generated by the stator coil and rapidly conducting heat of heat transferred by the power rotating shaft through the fan and the rotor fixing frame which are made of good heat conduction materials, and dissipating the heat along with the airflow. Annular back iron and magnet frame independent setting and fixed as an organic whole are favorable to using the material preparation of difference, and for example annular back iron uses thin iron sheet preparation, compromise the effect of magnetic conduction and air current water conservancy diversion simultaneously, and the magnet frame uses can good heat conduction and light aluminum alloy material preparation, and heat conductivility is good and inertia is little, plays the effect of heat dissipation and fixed magnet simultaneously.
Holes or grooves are uniformly distributed on the magnet frames of the front rotor fixing piece and the rear rotor fixing piece in a surrounding mode, so that the weight is reduced, and meanwhile the effect of manual filling and dynamic balance adjustment is achieved when debugging is carried out after assembly.
The heat insulation layer arranged on the front side of the heat dissipation fixing frame prevents the radiation heat energy of the power equipment from being transmitted to the motor body to a large extent. The comb tooth tip direct contact fan housing of heat dissipation mount, the fan housing of good heat conduction material is connected the dilatation with the heat dissipation mount and is a heat dissipation whole, because power equipment's radiant heat is higher than the motor and generates heat, heat dissipation mount and fan housing are favorable to absorbing power equipment's heat, thereby reduced power equipment's heat energy greatly and produced the heat energy transmission to the generator through the power pivot, and be favorable to cooling down for power equipment, improve power equipment and generator's wholeness ability jointly, the effect that the setting and the mounted position of insulating layer brought has also been proved in the practice.
Drawings
Figure 1 is an exploded view of the present invention,
FIG. 2 is a view showing an assembled state when the wind shield is transparent,
fig. 3 is an enlarged schematic view of the main fan structure.
In the figure: 1-heat dissipation fixing frame, 2-rotor flange, 3-rear rotor fixing piece, 4-main fan, 5-stator disc, 6-front rotor fixing piece, 7-booster fan, 8-fan cover, 9-fan cover side wall, 10-fan cover end face, 11-magnet groove, 12-fixing ring, 13-main fan blade, 14-flange plate, 15-connecting cylinder, 16-comb teeth, 17-convex edge and 18-through hole.
Detailed Description
The invention is further illustrated with reference to the following figures and examples: as shown in fig. 1 and 2, the air duct structure of the axial flux disc type motor is used as an internal heat dissipation air duct of the coreless disc type generator and the combination of the rotor and the stator disc type structure, and the air flow generated by the fan driven by the rotor flows through the stator coil and the rotor magnet in a one-way manner and the heat dissipation part while efficiently utilizing the magnetic field intensity and the electromotive force conversion, so that the heat generated by the coil and the heat transferred by power equipment through the power rotating shaft are dissipated to the maximum.
The disc type motor main body sequentially comprises a fan cover 8, a booster fan 7, a front rotor fixing piece 6, a stator disc 5, a main fan 4, a rear rotor fixing piece 3, a rotor flange 2 and a heat dissipation fixing frame 1 which are arranged on the same axis from front to back, the center of the disc type motor main body is provided with a through hole through which a power rotating shaft can pass, and all parts can be a revolving body which takes the center line of the power rotating shaft as the center.
Wherein, the wind shield 8, the stator disc 5 and the heat dissipation fixing frame 1 are fixedly connected with each other to form a fixing part, and the fixing part is fixedly connected with the outer shell of the motor. The rotor flange 2, the main fan 4, the booster fan 7, the front rotor stator 6 and the rear rotor stator 3 are fixed to each other at positions adjacent to the through-holes by screws as rotating parts. The rotating part is fixedly connected with the power rotating shaft and rotates synchronously with the power rotating shaft during operation.
The heat radiation of the power equipment body and the heat conduction of the power rotating shaft are main heat sources of the generator, and in addition, the heat generated by the stator coil in the power generation process and the heat radiated from the outside are also included.
The fan cover 8 is concave towards the rear, a circle of continuous and complete fan cover side wall 9 and a fan cover end surface 10 with a through hole at the front end are arranged, and the rear side is open; the fan cover 8 accommodates other fixed components and rotating components in the concave space, can be made of aluminum alloy materials and serves as a heat dissipation component, and meanwhile forms a heat dissipation air duct according to the shape matching of the fan cover and each motor component, so that heat dissipation air flow is forced to flow through the heat dissipation body in a single direction and take away heat. The inner surface of the fan cover is generally smoothly turned, and the diameter of the inner surface is not reduced from the front to the rear.
A booster fan 7 with a central through hole is arranged between the front rotor fixing piece 6 and the front end of the fan cover, and the booster fan 7 is coaxially and fixedly connected with the front rotor fixing piece 6 into a whole.
The power-assisted fan 7 is in an annular sheet shape, is provided with a circle of oblique notches at the periphery and is folded towards the front side face to be used as a fan blade. The oblique direction of the notch is favorable for pushing the airflow out radially to the outer periphery when the power rotating shaft rotates. The power-assisted fan 7 can be made of light aluminum alloy materials, the aluminum alloy materials are good in heat conduction performance and can be used as a heat dissipation part, and when the power-assisted fan rotates, airflow flows out through the fan blades, and meanwhile, partial heat is taken away. The booster fan is thin and small in diameter, and the forward flowing air flow brought to the inner side wall of the fan cover by the main fan is blocked and pushed to the rear air flow outlet by the aid of extremely small rotational inertia, so that hot air flow is prevented from flowing back, and the air flow flows orderly in a one-way mode. Because the shape of the fan cover determines that the total airflow direction is inconvenient even if the booster fan is omitted, the effect of using the booster fan is better through experimental verification.
The front rotor fixing piece 6 and the rear rotor fixing piece 3 are both annular sheets, the front rotor fixing piece 6 and the rear rotor fixing piece 3 can be symmetrical to a plane passing through the center of the stator disc and perpendicular to the axis, the side surface deviating from the stator disc 5 is annular in a magnetic conduction material so as to be beneficial to forming a magnetic flux loop, the front rotor fixing piece and the rear rotor fixing piece can be made of cast iron, one side facing the stator disc 5 can be made of light aluminum alloy material, the two side surfaces are attached and fixed into a whole, magnet slots 11 are arranged at the positions, corresponding to the stator coils, of one side facing the stator disc 5 one by one, and permanent magnets are installed in the magnet slots after assembly.
The stator disc 5 between the front rotor stator 6 and the rear rotor stator 3 is used for fixedly mounting stator coils, the stator coils are fixed on the disc surface of the stator disc in a circle shape occupying a sector area, coils are arranged on two side surfaces of the stator disc, the stator coils are enameled copper coils without iron cores, a circle is arranged around a power rotating shaft, enameled copper wires of the stator coils are directly exposed, and the arrangement of the coils avoids stacking and planarization arrangement (the stator structure is shown in other patent documents of the applicant), so that the heat dissipation area is larger than that of the stator coils with iron cores, and the heat dissipation effect is good. The front rotor fixing piece and the rear rotor fixing piece simultaneously play roles in fixing the magnet, forming a magnetic conduction loop, constructing a heat dissipation airflow channel, forcing heat dissipation airflow to flow through the stator coil and the magnet and bringing heat of the power rotating shaft out along with the airflow, and intercepting radiation heat generated by the stator coil and rapidly dissipating the heat along with the airflow together with the heat transferred by the power rotating shaft. The center of the stator plate has a through hole with a large diameter for inserting a main fan 4 without contact.
The main fan 4 is coaxially provided with a pair of flat annular fixed rings 12, the pair of fixed rings 12 are fixedly connected through a circle of main fan blades 13, the side faces of the main fan are communicated with each other in all directions due to gaps among the main fan blades 13, the outer diameter of each fixed ring 12 is smaller than the diameter of a through hole of the stator disc, and in an assembly state, the pair of fixed rings are axially higher than the side face outlines of two sides of the stator disc respectively. The front rotor stator 6 and the rear rotor stator 3 are closely attached to the fixing ring 12, so that the fixing rings at the two ends of the main fan are higher than the stator disc to serve as the mounting base of the front and rear rotor stators, a gap is reserved between the rotating part and the fixing part to ensure the rotation of the rotating part, and an air flow heat dissipation channel is arranged.
The main fan blades 13 are arranged in an arc shape, so that when the main fan 4 is fixed on the power rotating shaft to rotate, air can be pushed out towards the periphery. The main fan 4 is fixedly connected with the power rotating shaft through the rotor flange 2.
The rotor flange 2 is provided with a flange 14 perpendicular to the rotating shaft and a connecting cylinder 15 fixed on the inner ring of the flange, the connecting cylinder 15 and the power rotating shaft are coaxial, the inner diameter of the connecting cylinder 15 just can penetrate through the power rotating shaft, and the outer diameter of the connecting cylinder 15 penetrates through a through hole of the main fan 4. The connecting cylinder 15 can be embedded in the power rotating shaft for transmission through keys, and the rotor flange and the power rotating shaft are usually fixed through fasteners. The rotor flange plays a role in connecting the rotating part with the power main shaft, so that moment load borne by the rotor flange is large during high-speed rotation, and the rotor flange is made of materials with high strength.
The outer diameter of the heat dissipation fixing frame 1 is larger than the inner diameter of the side wall 9 of the fan cover, a circle of comb teeth 16 are radially arranged on the periphery of the heat dissipation fixing frame 1, a gap is formed between every two adjacent comb teeth 16, and the diameter of the root of each comb tooth is 5% -45% smaller than the outer diameter of the fan cover 8. As shown in fig. 2, the heat dissipation fixing frame 1 is fixedly installed on the rear end surface of the fan housing. The heat dissipation fixing frame plays a role in heat dissipation and protection. In order to facilitate installation of the heat dissipation fixing frame 1, a convex edge 17 is arranged on the outer periphery of the fan cover 8 in a radial direction, and the fan cover 8 and the heat dissipation fixing frame 1 are fixedly connected through the contact part of the convex edge 17 and the comb teeth 16. The heat dissipation fixing frame 1 has the main function of heat dissipation and can be made of aluminum alloy materials with high heat conductivity. The fan cover plays an important role in guiding air flow, and the air flow entering from the through hole of the fan cover is forced to flow out from the comb tooth gap of the heat dissipation fixing frame in a single direction. The heat dissipation fixing frame 1 with a large heat dissipation area absorbs heat energy, and meanwhile, the heat energy is dissipated through the fixedly connected fan cover, and the fan cover is made of aluminum alloy materials with good heat conduction. The air flow passing through the heat dissipation fixing frame 1 brings out a part of the heat.
Because the main source of heat is the power equipment behind the motor, for example, the gasoline engine is used as the power equipment, kinetic energy is transmitted to the motor through the power rotating shaft, and heat is transmitted to the motor at the same time, in order to prevent the heat radiation of the power equipment from aggravating the influence of heat energy, a heat insulation layer is arranged on the front side surface of the heat dissipation fixing frame 1. The heat dissipation fixing frame 1 absorbs and dissipates the radiant heat energy of the gasoline engine with higher temperature rapidly, so that the gasoline engine is enabled to work more stably indirectly, the radiant heat energy of the gasoline engine is isolated while the efficiency of the gasoline engine is improved, the heat conducted to the power rotating shaft is reduced, and the temperature of the rotor fixing piece is reduced by more than 20 ℃ through testing. Experiments prove that the arrangement of the heat insulation layer and the arrangement of the heat insulation layer on the front side surface of the heat dissipation fixing frame 1 can bring better effects, and the power density and the output efficiency are favorably improved.
The main fan and the booster fan are driven to rotate by the power rotating shaft, under the guiding and rotating action of fan blades of the main fan and the booster fan, outside air enters from a through hole at the front end of the fan cover, and flows out to the inner side wall of the fan cover along the disk surfaces at two sides of the stator disk and the disk surfaces of the front rotor fixing piece and the rear rotor fixing piece around the main fan; meanwhile, the booster fan guides a part of airflow to the side wall of the fan cover in the radial direction, blocks the part of airflow which flows back from the main fan, and only flows out to the rear end of the fan cover under the blocking of the front end of the fan cover, the airflow reaches the comb teeth of the heat dissipation fixing frame and flows out from gaps among the comb teeth, the flowing fan cover, the booster fan, the magnet frames on the front side faces of the front rotor fixing piece and the rear rotor fixing piece and the heat dissipation fixing frame are made of aluminum alloy materials with good heat conductivity, the heat of the airflow can be quickly absorbed, part of the heat is brought out along with the airflow, the airflow flows through the copper coils on the disk face of the stator disk, the heat generated by the coil current is directly air-cooled, and meanwhile, the flowing permanent magnet is cooled, so that the performance of the permanent magnet is not reduced due to high temperature. The heat of the power equipment transmitted from the power rotating shaft is dissipated through the air flow flowing through the heat radiator which is formed by the rotor flange directly contacting with the power rotating shaft, the main fan fixedly connected into a whole, the booster fan, the rotor fixing sheet and the heat dissipation fixing frame, so that the heat dissipation area of the heat dissipation air flow is the largest. The working performance of the motor is more stable due to efficient heat dissipation, and the output efficiency and the output power density are remarkably improved.
The above embodiments of the respective components may be arbitrarily selected, mutually crossed or collectively used, and an effect corresponding to the structure may be obtained.
Claims (10)
1. The utility model provides an air duct structure of axial flux disc motor which characterized in that: the disc type motor main body sequentially comprises a fan cover (8), a front rotor fixing piece (6), a stator disc (5), a main fan (4), a rear rotor fixing piece (3), a rotor flange (2) and a heat dissipation fixing frame (1) which are arranged on the same axial line from front to back, the centers of the fan cover, the front rotor fixing piece, the rear rotor fixing piece, the rotor flange and the heat dissipation fixing frame are provided with through holes through which power rotating shafts can pass, wherein,
the fan cover (8) is concave towards the rear, a circle of continuous and complete fan cover side wall (9) and a fan cover end surface (10) with a through hole at the front end are arranged, and the rear side is open;
the front rotor fixing piece (6) and the rear rotor fixing piece (3) are both annular sheets, one side of the front rotor fixing piece and the rear rotor fixing piece, which is far away from the stator disc (5), is provided with annular back iron made of magnetic conducting materials, one side of the front rotor fixing piece and the rear rotor fixing piece, which faces the stator disc (5), is provided with magnet frames, and magnet slots (11) are arranged at the positions of the magnet frames, which correspond to the stator coils one by one;
the main fan (4) is coaxially provided with a pair of flat annular fixed rings (12), the pair of fixed rings (12) are fixedly connected through a circle of surrounding main fan blades (13), so that the side surfaces of the main fan are communicated with each other in all directions, the outer diameter of each fixed ring (12) is smaller than the diameter of a through hole of the stator disc, and the axial direction of the pair of fixed rings in an assembled state is higher than the side surface profiles of the two sides of the stator disc respectively;
the rotor flange (2) is provided with a flange plate (14) and a connecting cylinder (15) fixed on the inner ring of the flange plate, the inner diameter of the connecting cylinder (15) just can penetrate through the power rotating shaft, and the outer diameter of the connecting cylinder (15) penetrates through a through hole of the main fan (4);
the fan housing (8), the stator disc (5) and the heat dissipation fixing frame (1) are fixedly connected to form a fixed part, the rotor flange (2), the main fan (4), the front rotor fixing piece (6) and the rear rotor fixing piece (3) are fixedly connected to form a rotating part rotating along with the power rotating shaft at the position close to the through hole through screws, and the fixed part and the rotating part are arranged in a gap mode.
2. The air duct structure of an axial flux disc motor according to claim 1, wherein: a booster fan (7) with a central through hole is arranged in front of the front rotor fixing piece (6), and the booster fan (7) is coaxially and fixedly connected with the front rotor fixing piece (6) into a whole.
3. The air duct structure of an axial flux disc motor according to claim 2, wherein: the power-assisted fan (7) is in an annular disc shape with a central through hole, a circle of oblique notches which are inclined relative to the radial direction at the same angle are arranged on the periphery around the central through hole, and the disc surface at the oblique notches is folded towards the front side surface to be used as fan blades, so that the power-assisted fan pushes air to flow towards the periphery when rotating along with the power rotating shaft.
4. The air duct structure of an axial flux disc motor according to claim 1, wherein: the outer diameter of the heat dissipation fixing frame (1) is larger than the outer diameter of the fan cover side wall (9), a ring of comb teeth (16) with adjacent gaps are radially arranged on the periphery of the heat dissipation fixing frame (1), and the diameter of the roots of the comb teeth is 5% -45% smaller than the outer diameter of the fan cover side wall (9).
5. The air duct structure of an axial flux disc motor according to claim 4, wherein: the periphery of the fan cover (8) is provided with a convex edge (17) radially outwards, the convex edge (17) is directly contacted with the outer end part of the comb teeth (16), and the contact part of the convex edge (17) and the comb teeth (16) is fixedly connected with the fan cover (8) and the heat dissipation fixing frame (1).
6. The air duct structure of the axial-flux disc motor according to claim 1, wherein: and a heat insulation layer is arranged in front of or on the inner side surface of the heat dissipation fixing frame (1) facing the rotor flange (2).
7. The air duct structure of an axial flux disc motor according to claim 1, wherein: the annular back iron and the magnet frame are two separated annular components with equal outer diameters and are fixed into a whole through fastening materials.
8. The air duct structure of an axial flux disc motor according to claim 7, wherein: holes or grooves are uniformly distributed on the magnet frame around the through holes and are used for filling and adjusting dynamic balance after being spliced with the annular back iron.
9. The air duct structure of an axial flux disc motor according to claim 1, wherein: the side wall (9) of the fan cover is vertical to the end surface (10) of the fan cover or is outwards expanded backwards.
10. The air duct structure of an axial flux disc motor according to claim 1, wherein: a circle of coreless copper coils which correspond to the magnets in the magnet grooves (11) in size are arranged on the stator disc (5) in a surrounding mode around the through holes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/130339 WO2021134406A1 (en) | 2019-12-31 | 2019-12-31 | Air duct structure of axial flux disk motor |
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| CN217135278U true CN217135278U (en) | 2022-08-05 |
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| CN201990001342.1U Active CN217135278U (en) | 2019-12-31 | 2019-12-31 | Air duct structure of axial flux disc type motor |
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| WO (1) | WO2021134406A1 (en) |
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| DE102019100907A1 (en) * | 2019-01-15 | 2020-07-16 | Gkn Sinter Metals Engineering Gmbh | Electric motor |
| CN113562183B (en) * | 2021-09-07 | 2023-08-04 | 北京航空航天大学 | Heat dissipation and vibration reduction system of engine direct-drive type hybrid power device for unmanned aerial vehicle |
| CN116857137B (en) * | 2023-08-17 | 2024-04-26 | 山东国创精密机械有限公司 | Ventilating and heat-dissipating type wind power bearing seat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201107842Y (en) * | 2006-12-04 | 2008-08-27 | 袁会文 | Disc type switch reluctance motor |
| US20090169399A1 (en) * | 2007-12-27 | 2009-07-02 | Metal Industries Research&Development Centre | Ultra-thin miniature pump |
| CN201369663Y (en) * | 2009-03-16 | 2009-12-23 | 常州高尔登科技有限公司 | Disk-type brushless motor |
| CN206471992U (en) * | 2017-02-16 | 2017-09-05 | 扬州市新港电机有限公司 | A kind of Double-rotor efficient radiating motor |
| CN109768656A (en) * | 2019-03-08 | 2019-05-17 | 贵州航天林泉电机有限公司 | A kind of radiator structure of axial magnetic flux disc type electric machine |
| CN110149024B (en) * | 2019-07-08 | 2024-04-05 | 泉州市华德机电设备有限公司 | Self-heat-extraction cooling structure of high-speed motor |
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Effective date of registration: 20221027 Address after: A491, No. 05, Floor 4, Building 2, International Enterprise Center, No. 1, Guanggu Avenue, Hongshan District, Wuhan City, 430073, Hubei Province (Wuhan Area of Free Trade Zone) Patentee after: Ruige Electromechanical (Wuhan) Co.,Ltd. Address before: 430064 room 1703, building 5, Changjiang Zidu phase III, Jiangsheng West Road, wujindi, Baishazhou, Wuchang District, Wuhan City, Hubei Province Patentee before: Yu Renwei |
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