CN209748382U - Permanent magnet variable frequency generator and rotor assembly structure and stator punching sheet structure thereof - Google Patents

Abstract

the utility model discloses a permanent magnet variable frequency generator and rotor subassembly structure and stator punching structure thereof, rotor subassembly structure are including the rotor flywheel that has the cavity, be located the axial one end of rotor flywheel at the bottom of the chamber of cavity, the opening of cavity is located the axial other end of rotor flywheel, install the rotor ring gear on the first outer circumference of the axial one end at the bottom of the corresponding cavity chamber of rotor flywheel, install the rotor magnetic pole on the second outer circumference that the rotor flywheel corresponds cavity open-ended axial other end. The product production input cost is greatly reduced, and the performance is excellent.

Description

Permanent magnet variable frequency generator and rotor assembly structure and stator punching sheet structure thereof

Technical Field

The utility model relates to a permanent magnetism frequency conversion brushless generator field, in particular to permanent magnetism frequency conversion generator and rotor subassembly structure and stator towards piece structure thereof.

Background

the conventional generator rotor adopts a rotor shaft and silicon steel sheet iron core structure, a rotor excitation coil adopts a copper wire winding, the rotor and a flywheel exist independently, the product manufacturing process and the material cost are high, the product production procedures are multiple, and the production investment is high. The conventional generator stator punching sheet has longer lamination thickness and higher material cost.

disclosure of Invention

the utility model aims at providing a permanent magnet variable frequency generator and rotor subassembly structure and stator towards piece structure to the not enough that prior art corresponds, greatly reduced the product production input cost, and the performance is excellent.

The utility model aims at adopting the following scheme to realize: the utility model provides a rotor subassembly structure for permanent magnet variable frequency generator, including the rotor flywheel that has the cavity, be located the axial one end of rotor flywheel at the bottom of the chamber of cavity, the opening of cavity is located the axial other end of rotor flywheel, install the rotor ring gear on the first outer circumference of the axial one end at the bottom of the corresponding cavity chamber of rotor flywheel, install the rotor magnetic pole on the second outer circumference that the rotor flywheel corresponds the cavity open-ended axial other end.

Furthermore, a mounting groove is formed in the center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel, and a plurality of bolt through holes for mounting and fixing are formed in the groove bottom of the mounting groove; the first outer circumferential diameter of the rotor flywheel for mounting the rotor gear ring is larger than the second outer circumferential diameter of the rotor flywheel for mounting the rotor magnetic poles.

furthermore, a plurality of rotor magnetic poles are arranged on the second outer circumference of the rotor flywheel, and the rotor magnetic poles are distributed around the second outer circumference of the rotor flywheel; the rotor magnetic pole is fixedly bonded with the second outer circumference of the rotor flywheel; a gap is reserved between two adjacent rotor magnetic poles, and a trapezoidal pressing strip for fastening the rotor magnetic poles is fixed between the two adjacent rotor magnetic poles; the trapezoidal pressing strip is fixed on the second outer circumference of the rotor flywheel through screws; and a plurality of screw holes for fixing the trapezoidal pressing strips are arranged on the second outer circumference of the rotor flywheel for mounting the rotor magnetic poles. The cross section of the trapezoidal pressing strip is isosceles trapezoid.

Furthermore, the cavity wall of the rotor flywheel is provided with a plurality of threaded holes extending along the axial direction and used for fixing fan blades; the plurality of threaded holes are uniformly distributed around the circumference.

Furthermore, the rotor gear ring is positioned through a gear ring mounting step arranged on the rotor flywheel; the rotor gear ring is in interference fit with the first outer circumference of the rotor flywheel; and chamfer inclined planes are arranged on two sides of the gear of the rotor gear ring, and the included angle between each chamfer inclined plane and the corresponding tooth surface is 45 degrees.

Furthermore, a ventilation opening is formed in the rotor flywheel; the ventilation openings are multiple; the bottom of the cavity of the rotor flywheel is provided with a ventilation opening, and the bottom of the side wall of the inner cavity of the flywheel body is also provided with a ventilation opening which is communicated with the ventilation opening corresponding to the bottom of the cavity of the rotor flywheel.

The utility model provides a permanent magnet variable frequency generator, including stator module and rotor subassembly, the rotor magnetic pole of rotor subassembly is located stator module, at the bottom of rotor subassembly's the cavity chamber with power device's transmission shaft fixed connection, power device is equipped with the stator installation end cover that is used for installing stator module, stator module and power device's stator installation end cover fixed connection.

Furthermore, a mounting groove is formed in the center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel, and a plurality of bolt through holes for mounting and fixing are formed in the groove bottom of the mounting groove; a rotor mounting flange is fixed on a transmission shaft of the power device, extends into a mounting groove at the bottom of a cavity of a rotor flywheel and is fixedly connected with the bottom of the cavity of the rotor flywheel through a bolt; the power device adopts an internal combustion engine.

The utility model provides a stator punching sheet structure for permanent magnet variable frequency generator, for the stator punching sheet body of installation with location size phi 1 including the excircle diameter, the periphery of stator punching sheet body is equipped with the flush trimming that four sections length equals, and the first flush trimming and the third flush trimming of stator punching sheet body are parallel, and the second flush trimming and the fourth flush trimming of stator punching sheet body are parallel to and perpendicular with first flush trimming, third flush trimming, and the distance between first flush trimming and the third flush trimming equals the distance between second flush trimming and the fourth flush trimming, the inboard of four arc edges of stator punching sheet body all is equipped with the installation via hole that is used for stator installation fixed, four installation via hole symmetric distributions; the inner edge of the stator punching sheet body is provided with a plurality of groups of wire embedding grooves along the circumferential direction of the stator punching sheet body. The center of the stator punching sheet body, the center of the mounting through hole and the center of the arc edge are positioned on the same straight line; the outer diameter of the stator punching sheet body, namely the positioning size phi 1 for installation, is 306 +/-4 mm; the distance between the first flat cutting edge and the third flat cutting edge is 243-249mm, and the distance between the second flat cutting edge and the fourth flat cutting edge is 243-249 mm; the inner diameter of the stator punching sheet body is 182 +/-3 mm; the diameter of a mounting through hole of the stator punching sheet body is 6.5 +/-1 mm; four mounting through holes at four corners of the stator punching sheet body are symmetrically distributed at an angle of 45 degrees, and the distance between the four mounting through holes is 146 +/-2 mm; the width of a tooth part of the stator punching sheet body is 5 +/-1 mm; the width of a wire inserting notch of the stator punching sheet body is 4 +/-0.5 mm; the diameter of the bottom of a coil inserting groove of the stator punching sheet body is designed to be phi 215 +/-3 mm, and the minimum yoke width in the circumferential direction of the stator punching sheet is ensured to be larger than 15.5 mm; the wire embedding groove is designed into a trapezoidal groove or a pear-shaped groove; the stator punching sheet body is provided with 48 groups of embedded wire grooves, and the 48 groups of embedded wire grooves are symmetrically distributed in the circumferential direction at an angle of 7.5 degrees in each groove by a trapezoidal groove or a pear-shaped groove; when the stator punching sheet body is used for a three-phase motor, the ABC three-phase windings respectively occupy 16 groups of wire embedding grooves, each phase of winding is eight poles, and each phase of coil is of an independent winding structure.

the utility model has the advantages that:

the utility model discloses a rotor subassembly uses cast iron rotor flywheel as the rotor part body, replaces the rotor shaft and the silicon steel sheet iron core of conventional generator rotor, uses the rotor flywheel body directly to carry out fixed assembly, increases the flywheel ring gear on the rotor flywheel diameter simultaneously to realize that rotor subassembly and flywheel subassembly fuse into an organic whole, reduced the flywheel part that exists the use alone in the conventional generator stator and rotor product, can reduce product manufacturing process and material cost by a wide margin; meanwhile, the rotor magnetic pole made of permanent magnetic material is used for replacing a rotor excitation coil of a conventional product, and as the indexes of remanence, coercive force, intrinsic coercive force, maximum energy product and the like of the permanent magnetic pole are stable and reliable, the permanent magnetic pole saturated in magnetization is used as a main magnetic field of the rotor to output required excitation power to the stator so as to replace a copper wire winding used by the rotor excitation coil, thereby achieving the purpose of reducing the cost; the rotor assembly structure has excellent output performance, the waveform distortion rate of the output power supply of the motor is low, and the power is stable; meanwhile, the structural design is simplified, so that the production procedures of the product can be obviously reduced, and the production investment of the product is reduced.

the stator punching sheet of the utility model takes the length and the width of 246mm as the reference, the diameter phi 306mm of the excircle is taken as the positioning size for installation, and four symmetrically distributed installation via holes are designed at four corners of the circumference for stator installation and fixation; meanwhile, the diameter basic size of the bottom of the coil inserting groove of the stator punching sheet is designed to be phi 215mm, and the minimum yoke width in the circumferential direction of the stator punching sheet is ensured to be larger than 15.5mm so as to ensure the magnetic flux requirement of a magnetic circuit of the stator punching sheet; the embedded wire slots are designed into a trapezoidal slot structure (also can be a pear-shaped slot), 48 groups are provided, the stator punching sheet is used for a three-phase motor, each ABC three phase occupies 16 groups of embedded wire slots, each phase of coil is an eight-pole, the stator punching sheet is of an independent winding structure (the embedded wire design layout is shown in figure 9), when the stator punching motor is matched with an inverter for use, three phases are inverted into a single phase, the output is 220V, by using the design scheme, can reasonably utilize the design of the punching sheet and the coil inserting layout, effectively shorten the height of the stator and rotor cores of the motor, reduce the weight of the product and the direct material cost, taking an 8.0KW product as an example, the conventional current product scheme is phi 190 multiplied by 158mm, the steel weight is 189 multiplied by 158 multiplied by 7.854/1000000 multiplied by 44.33Kg, the punching scheme is used, the basic size is taken as an accounting reference, then phi 306 is multiplied by 80.7mm, 246 is multiplied by 80.7 is multiplied by 7.854/1000000 is multiplied by 38.36Kg, and a single motor can save 5.97Kg of steel; the height of the iron core is reduced, the consumption of other auxiliary materials can be reduced, such as the consumption of insulating paper, slot wedges, insulating paint and the like, when the product is used with an inverter, the noise is low, the fuel consumption of an internal combustion engine is reduced, the product performance is not reduced through various test comparisons while the product cost is saved, and the market requirements are completely met.

the three-phase permanent magnet variable frequency generator has the advantages that the iron core stacking thickness is short, the whole structure is small in size, the material utilization rate is high, the quality-to-work ratio is large, the rotor is of a permanent magnet structure, the working rotating speed changes along with the load change, the fuel consumption can be effectively reduced (variable frequency working mode), the stator and rotor design structure is combined for use, the product weight can be reduced, the fuel consumption is reduced, the product output performance is good, the conversion efficiency is high, and the product power output quality and the cost performance are improved.

drawings

Fig. 1 is a schematic structural diagram of a rotor assembly structure for a generator according to the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is an enlarged view of the portion P of FIG. 2;

FIG. 4 is a right side view of FIG. 1;

Fig. 5 is a perspective view of the rotor flywheel of the present invention;

Fig. 6 is a perspective view of the rotor flywheel of another view angle of the present invention;

Fig. 7 is a schematic structural diagram of the rotor flywheel of the present invention;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

FIG. 9 is a right side view of FIG. 8;

FIG. 10 is a top partial schematic view of FIG. 7;

Fig. 11 is a schematic structural view of a rotor magnetic pole according to the present invention;

FIG. 12 is a sectional view taken along line B-B of FIG. 11;

Fig. 13 is a schematic structural view of a rotor ring gear of the present invention;

FIG. 14 is a cross-sectional view taken along line C-C of FIG. 13;

FIG. 15 is an enlarged partial view of FIG. 13;

FIG. 16 is a cross-sectional view taken along line D-D of FIG. 15;

Fig. 17 is a schematic structural view of a stator punching sheet of the present invention;

Fig. 18 is a schematic diagram of the stator winding insert design layout of the present invention;

Fig. 19 is a schematic structural diagram of a permanent magnet variable frequency generator according to the present invention;

In the drawing, 1 is a rotor flywheel, 11 is a concave cavity, 12 is a first outer circumference, 13 is a second outer circumference, 14 is an installation step location, 15 is a ventilation opening, 16 is an installation groove, 17 is a bolt through hole for installation and fixation, 18 is a screw hole, 19 is a threaded hole, 2 is a rotor gear ring, 21 is a tooth part, 22 is a chamfer inclined plane, 23 is a tooth surface, 3 is a rotor magnetic pole, 31 is a notch, 4 is a stator punching sheet body, 41 is a wire embedding groove, 42 is an installation through hole, 5 is a trapezoidal pressing strip, 52 is a screw, 6 is an internal combustion engine, 61 is a rotor installation flange, 62 is a stator installation end cover, 7 is an ignition timing marking, 8 is a rotor assembly and 9 is a stator assembly.

Detailed Description

Example one

Referring to fig. 1 to 16, the utility model provides a rotor assembly structure for a permanent magnet variable frequency generator, which comprises a rotor flywheel with a concave cavity, wherein the cavity bottom of the concave cavity is positioned at one axial end of the rotor flywheel, the opening of the concave cavity is positioned at the other axial end of the rotor flywheel, a rotor gear ring is arranged on a first outer circumference of the rotor flywheel corresponding to one axial end of the cavity bottom of the concave cavity, and the rotor gear ring is in interference fit with the first outer circumference of the rotor flywheel; in the embodiment, the installation adopts a high-frequency heating gear ring, and the installation position of the heated thermal sleeve on the flywheel is in interference fit. And a rotor magnetic pole is arranged on the second outer circumference of the other axial end of the rotor flywheel corresponding to the opening of the concave cavity. The center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel is provided with a mounting groove, wherein the mounting groove is the mounting groove of the flywheel body and is mounted and connected on a driving shaft of the internal combustion engine in a transition fit manner. And a plurality of bolt through holes for installation and fixation are formed in the bottom of the groove of the installation groove and are used when the flywheel body is connected with a driving shaft of the internal combustion engine. The center hole of the groove at the bottom of the flywheel has no actual assembly function and is mainly used as a positioning hole during machining. A conventional common generator rotor uses a copper wire winding as an excitation coil, and the permanent magnet variable frequency generator uses a ferrite magnetic pole to replace the copper wire winding as an excitation main magnetic field. Gear ring: the clutch is used for meshing with a starter motor isolator of the internal combustion engine. The rotor flywheel is provided with a groove corresponding to the axial end face of the concave cavity opening, the groove step is used for installing the fan blade during later-stage generator assembly, the fan blade of the common motor is directly connected with the rotor shaft, and the fan blade is designed in a split mode and adopts a front-mounted air exhaust mode.

The first outer circumferential diameter of the rotor flywheel for mounting the rotor gear ring is larger than the second outer circumferential diameter of the rotor flywheel for mounting the rotor magnetic poles.

The magnetic pole of the rotor is made of permanent magnetic material; the rotor flywheel adopts a cast iron rotor flywheel.

In order to consider the factors of difficulty in producing and processing magnetic poles and cost, a plurality of rotor magnetic poles are arranged on the second outer circumference of the rotor flywheel, and the plurality of rotor magnetic pole rings are distributed on the second outer circumference of the rotor flywheel; the rotor magnetic pole is fixedly bonded with the second outer circumference of the rotor flywheel; a gap is reserved between two adjacent rotor magnetic poles, and a trapezoidal pressing strip for fastening the rotor magnetic poles is fixed between the two adjacent rotor magnetic poles; the trapezoidal pressing strip is fixed on the second outer circumference of the rotor flywheel through screws; and a plurality of screw holes for fixing the trapezoidal pressing strips are arranged on the second outer circumference of the rotor flywheel for mounting the rotor magnetic poles. The cross section of the trapezoidal pressing strip is isosceles trapezoid. The rotor magnetic pole is pasted on the second outer circumference of the rotor flywheel. Eight rotor magnetic poles are arranged on the second outer circumference of the rotor flywheel of the embodiment. The pressing strip is fastened on the outer circle surface of the flywheel by using screws, and the main function is to prevent the magnetic poles from falling off. Notches are arranged at two sides of the magnetic pole of the rotor and used for yielding screws, a gap is arranged between the magnetic pole and the magnetic pole, and the trapezoidal pressing bar is fixed on the flywheel by the screws in the middle. The trapezoidal layering is aluminium matter layering, and the centre has screw thread via hole, connects in the flywheel body through the screw, prevents that the magnetic pole from droing, and the aluminium material can effectively prevent the magnetic leakage production simultaneously.

the concave cavity wall of the rotor flywheel is provided with a plurality of threaded holes extending along the axial direction and used for fixing fan blades; the plurality of threaded holes are uniformly distributed around the circumference. The inner wall of the cavity of the rotor flywheel is provided with a plurality of mounting lugs, and threaded holes extending along the axial direction of the rotor flywheel are formed in the mounting lugs and used for fixing fan blades. The operation of the fan blades is heat dissipation, one disc fan blade is fixed in the mounting seam allowance by using a screw, and the connection mode is similar to the mode that the front flywheel component is connected with the power transmission shaft of the internal combustion engine.

The rotor gear ring is positioned through a gear ring mounting step arranged on the rotor flywheel; and chamfer inclined planes are arranged on two sides of the gear of the rotor gear ring, and the included angle between each chamfer inclined plane and the corresponding tooth surface is 45 degrees. Each tooth of the gear ring is provided with a chamfer inclined plane of 45 degrees, so that the starting motor isolator can be meshed with the gear ring when being ejected.

A ventilation opening is formed in the rotor flywheel; the ventilation openings are multiple; the ventilation opening is arranged at the bottom of the cavity of the rotor flywheel, the ventilation opening extends from the bottom of the cavity of the rotor flywheel to the wall of the cavity along the axial direction, namely the ventilation opening is arranged at the bottom end of the side wall of the inner cavity of the flywheel body and communicated with the ventilation opening corresponding to the bottom of the cavity of the rotor flywheel. The inner cavity of the flywheel body is of a hollow structure and is connected with the ventilation opening into a whole, so that the flywheel body is convenient for air flowing heat dissipation and weight reduction. This embodiment sets up 3 ventilation openings, and three ventilation opening is convenient for circulation of air and heat dissipation here, helps taking the work piece when the assembly to use simultaneously. And an ignition timing marking is arranged at the bottom of the cavity of the rotor flywheel and is directly formed on the surface of the flywheel body in a die-casting manner.

The maximum diameter basic size of the circumference of the rotor flywheel is 255 +/-3 mm, and the axial length basic size is 128.7 +/-5 mm; the design size of the first outer circumference of the rotor flywheel is 237.4 +/-5 mm, and the axial length is 9 +/-2 mm; the design size of the second outer circumference of the rotor flywheel is 237.4 +/-5 mm, and the axial length is 87.7 +/-3 mm; a groove for mounting and fixing the flywheel body is arranged at the central part of the bottom of the cavity of the rotor flywheel, the diameter of the groove is 63 +/-3 mm, and the axial depth of the groove is 9 +/-2 mm; the center part of the bottom of the cavity of the rotor flywheel cavity is provided with five bolt through holes for mounting and fixing the flywheel body, the diameter of the bolt through holes for mounting and fixing the four flywheel bodies is phi 11mm, and the diameter of the bolt through hole for mounting and fixing one flywheel body is 10.2 mm; the open end of the rotor flywheel is provided with 3 threaded holes for fixing fan blades, which are uniformly distributed along the center, and the design size is M6 threaded holes.

The basic size of the flywheel gear ring is designed to have the outer diameter of phi 271mm, the inner diameter of phi 137mm and the thickness of 9 mm; the rotor assembly structure is provided with a bonded magnetic pole, the rotor magnetic pole is designed into an arc shape, the basic size of the shape length is 80.7 +/-5 mm, and the width size is 60.35 +/-5 mm; the designed inner diameter of the rotor magnetic pole is R78.88mm, and the designed outer diameter of the rotor magnetic pole is R90 +/-0.5 mm.

example two

Referring to fig. 17 and 18, the utility model provides a stator punching structure for generator, including the stator punching body that the excircle diameter is location size phi 1 for the installation, the periphery of stator punching body is equipped with the flat cut edge that four sections length equals, and the first flat cut edge and the third flat cut edge of stator punching body are parallel, and the second flat cut edge and the fourth flat cut edge of stator punching body are parallel to and perpendicular to first flat cut edge, third flat cut edge, and the distance between first flat cut edge and the third flat cut edge equals the distance between second flat cut edge and the fourth flat cut edge, the inboard of four circular arc edges of stator punching body all is equipped with the installation via hole that is used for stator installation fixed, four installation via hole symmetric distributions; the inner edge of the stator punching sheet body is provided with a plurality of groups of wire embedding grooves along the circumferential direction of the stator punching sheet body.

the center of the stator punching sheet body, the center of the mounting through hole and the center of the arc edge are positioned on the same straight line; the outer diameter of the stator punching sheet body, namely the positioning size phi 1 for installation, is 306 +/-4 mm; the distance between the first flat cutting edge and the third flat cutting edge is 243-249mm, and the distance between the second flat cutting edge and the fourth flat cutting edge is 243-249 mm; the inner diameter of the stator punching sheet body is 182 +/-3 mm; the diameter of a mounting through hole of the stator punching sheet body is 6.5 +/-1 mm; four mounting through holes at four corners of the stator punching sheet body are symmetrically distributed at an angle of 45 degrees, and the distance between the four mounting through holes is 146 +/-2 mm; the width of a tooth part of the stator punching sheet body is 5 +/-1 mm; the width of a wire inserting notch of the stator punching sheet body is 4 +/-0.5 mm; the diameter of the bottom of a coil inserting groove of the stator punching sheet body is designed to be phi 215 +/-3 mm, and the minimum yoke width in the circumferential direction of the stator punching sheet is ensured to be larger than 15.5 mm; the wire embedding groove is designed into a trapezoidal groove or a pear-shaped groove; the stator punching sheet body is provided with 48 groups of embedded wire grooves, and the 48 groups of embedded wire grooves are symmetrically distributed in the circumferential direction at an angle of 7.5 degrees in each groove by a trapezoidal groove or a pear-shaped groove; when the stator punching sheet body is used for a three-phase motor, the ABC three-phase windings respectively occupy 16 groups of wire embedding grooves, each phase of winding is eight poles, and each phase of coil is of an independent winding structure.

A plurality of groups of wire embedding grooves of the stator punching sheet are used for placing copper wire winding coils, the stator punching sheet is different from a rotor assembly, a rotor is of a permanent magnet structure, used magnetic poles are arranged, and the stator uses the winding coils.

EXAMPLE III

referring to fig. 1 to 19, the utility model provides a permanent magnet variable frequency generator, including stator module and rotor subassembly, the rotor magnetic pole of rotor subassembly is located stator module, at the bottom of rotor subassembly's the cavity chamber with the transmission shaft fixed connection of internal-combustion engine, the rotor flywheel carries out rigid connection with the transmission shaft of internal-combustion engine, rotates drive flywheel synchronous rotation work through the internal-combustion engine. The internal combustion engine is provided with a stator mounting end cover for mounting a stator assembly, and the stator assembly is fixedly connected with the stator mounting end cover of the internal combustion engine. The stator is formed by laminating stator punching sheets. The center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel is provided with a mounting groove, and the groove bottom of the mounting groove is provided with a plurality of bolt through holes for mounting and fixing; a rotor mounting flange is fixed on a transmission shaft of the internal combustion engine, extends into a mounting groove at the bottom of a cavity of a rotor flywheel and is fixedly connected with the bottom of the cavity of the rotor flywheel through a bolt.

The rotor flywheel is tightly connected with a transmission shaft of the internal combustion engine through a bolt, when the internal combustion engine is ignited, the starting motor isolator is popped up and meshed with a gear ring of the flywheel, the motor rotates to drive the gear ring on the flywheel, the flywheel rotates along with the flywheel, meanwhile, as the flywheel is connected with the transmission shaft of the internal combustion engine, the starting motor drives the transmission shaft of the internal combustion engine to ignite through the gear ring and the flywheel, the starting motor stops working after ignition, the motor isolator is separated from the gear ring to be retracted, and. The rotor flywheel assembly is connected with a transmission shaft of the internal combustion engine through a groove at the bottom and is fixed by using a screw; a die-casting shell for mounting the stator is arranged on the power of the internal combustion engine, and the outer diameter (306mm) of the stator is used as a mounting spigot for positioning. The stator is fixedly connected with the end cover through the installation through hole of the iron core by using a bolt. The stator is gapped with the rotor, which is to rotate in the inner diameter of the stator.

brief description of the generator principle:

1. After the stator assembly and the rotor flywheel assembly are assembled on the power of the internal combustion engine, igniting the internal combustion engine to ensure that the power runs normally;

2. at the moment, the stator component and the power are fixed, the rotor flywheel rotates, and the rotor magnetic field cuts a copper wire winding coil of the stator in the rotating process because eight magnetic poles are arranged in the circumferential direction of the rotor and are provided with a magnetic field;

3. A winding coil is arranged in the stator assembly, the stator coil is a double-layer three-phase winding, when the rotor magnetic field cuts the coil (3100rpm), the winding generates induction voltage, the line voltage is about 279-285V, and each group of line voltage is the same;

4. and the stator output winding is connected with an inverter for inversion, the output voltage is 120V after inversion, and the power is supplied to a power supply.

The utility model discloses a rotor subassembly structure has cancelled solitary flywheel assembly, adopt integral type project organization, rotor subassembly and the flywheel assembly design integration of conventional product are as an organic whole, material utilization is higher, the quality merit is than great, the while operation is frequency conversion working method, it is low to fire the oil consumption quantity, the noise is little, both can save product steel, also can effectual reduction product production process, raw and other materials and auxiliary material use quantity (like insulating paper, insulating varnish etc.), motor output is stable simultaneously, generator output power supply quality is comparatively excellent, the contrast data is shown as the following table.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a rotor subassembly structure for permanent magnetism variable frequency generator which characterized in that: including the rotor flywheel that has the cavity, be located the axial one end of rotor flywheel at the bottom of the chamber of cavity, the opening of cavity is located the axial other end of rotor flywheel, install the rotor ring gear on the first outer circumference of the axial one end at the bottom of the corresponding cavity of rotor flywheel, the rotor flywheel is installed the rotor magnetic pole on the second outer circumference that corresponds the open-ended axial other end of cavity.

2. The rotor assembly structure of claim 1 wherein: the center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel is provided with a mounting groove, and the groove bottom of the mounting groove is provided with a plurality of bolt through holes for mounting and fixing; the first outer circumferential diameter of the rotor flywheel for mounting the rotor gear ring is larger than the second outer circumferential diameter of the rotor flywheel for mounting the rotor magnetic poles.

3. The rotor assembly structure of claim 1 wherein: the second outer circumference of the rotor flywheel is provided with a plurality of rotor magnetic poles, and the plurality of rotor magnetic poles are distributed around the second outer circumference of the rotor flywheel; the rotor magnetic pole is fixedly bonded with the second outer circumference of the rotor flywheel; a gap is reserved between two adjacent rotor magnetic poles, and a trapezoidal pressing strip for fastening the rotor magnetic poles is fixed between the two adjacent rotor magnetic poles; the trapezoidal pressing strip is fixed on the second outer circumference of the rotor flywheel through screws; and a plurality of screw holes for fixing the trapezoidal pressing strips are arranged on the second outer circumference of the rotor flywheel for mounting the rotor magnetic poles.

4. the rotor assembly structure of claim 1 wherein: the concave cavity wall of the rotor flywheel is provided with a plurality of threaded holes extending along the axial direction and used for fixing fan blades; the plurality of threaded holes are uniformly distributed around the circumference.

5. the rotor assembly structure of claim 1 wherein: the rotor gear ring is positioned through a gear ring mounting step arranged on the rotor flywheel; the rotor gear ring is in interference fit with the first outer circumference of the rotor flywheel; and chamfer inclined planes are arranged on two sides of the gear of the rotor gear ring, and the included angle between each chamfer inclined plane and the corresponding tooth surface is 45 degrees.

6. The rotor assembly structure of claim 1 wherein: a ventilation opening is formed in the rotor flywheel; the ventilation openings are multiple; the bottom of the cavity of the rotor flywheel is provided with a ventilation opening, and the bottom of the side wall of the inner cavity of the flywheel body is also provided with a ventilation opening which is communicated with the ventilation opening corresponding to the bottom of the cavity of the rotor flywheel.

7. A permanent magnet variable frequency generator is characterized in that: the rotor assembly structure comprises a stator assembly and a rotor assembly structure according to any one of claims 1 to 6, wherein a rotor magnetic pole of the rotor assembly structure is positioned in the stator assembly, the cavity bottom of a concave cavity of the rotor assembly structure is fixedly connected with a transmission shaft of a power device, the power device is provided with a stator mounting end cover for mounting the stator assembly, and the stator assembly is fixedly connected with the stator mounting end cover of the power device.

8. The permanent magnet variable frequency generator according to claim 7, wherein: the center of the cavity bottom of the concave cavity at one axial end of the rotor flywheel is provided with a mounting groove, and the groove bottom of the mounting groove is provided with a plurality of bolt through holes for mounting and fixing; a rotor mounting flange is fixed on a transmission shaft of the power device, extends into a mounting groove at the bottom of a cavity of a rotor flywheel and is fixedly connected with the bottom of the cavity of the rotor flywheel through a bolt; the power device adopts an internal combustion engine.

9. The utility model provides a stator punching sheet structure for permanent magnet variable frequency generator which characterized in that: the stator punching sheet comprises a stator punching sheet body with the excircle diameter of a positioning size phi 1 for installation, wherein four sections of flat cutting edges with equal length are arranged on the periphery of the stator punching sheet body, a first flat cutting edge and a third flat cutting edge of the stator punching sheet body are parallel, a second flat cutting edge and a fourth flat cutting edge of the stator punching sheet body are parallel and are perpendicular to the first flat cutting edge and the third flat cutting edge, the distance between the first flat cutting edge and the third flat cutting edge is equal to the distance between the second flat cutting edge and the fourth flat cutting edge, installation through holes for stator installation and fixation are formed in the inner sides of four arc edges of the stator punching sheet body, and the four installation through holes are symmetrically distributed; the inner edge of the stator punching sheet body is provided with a plurality of groups of wire embedding grooves along the circumferential direction of the stator punching sheet body.

10. the stator lamination structure of claim 9, wherein: the center of the stator punching sheet body, the center of the mounting through hole and the center of the arc edge are positioned on the same straight line; the outer diameter of the stator punching sheet body, namely the positioning size phi 1 for installation, is 306 +/-4 mm; the distance between the first flat cutting edge and the third flat cutting edge is 243-249mm, and the distance between the second flat cutting edge and the fourth flat cutting edge is 243-249 mm; the inner diameter of the stator punching sheet body is 182 +/-3 mm; the diameter of a mounting through hole of the stator punching sheet body is 6.5 +/-1 mm; four mounting through holes at four corners of the stator punching sheet body are symmetrically distributed at an angle of 45 degrees, and the distance between the four mounting through holes is 146 +/-2 mm; the width of a tooth part of the stator punching sheet body is 5 +/-1 mm; the width of a wire inserting notch of the stator punching sheet body is 4 +/-0.5 mm; the diameter of the bottom of a coil inserting groove of the stator punching sheet body is designed to be phi 215 +/-3 mm, and the minimum yoke width in the circumferential direction of the stator punching sheet is ensured to be larger than 15.5 mm; the wire embedding groove is designed into a trapezoidal groove or a pear-shaped groove; the stator punching sheet body is provided with 48 groups of embedded wire grooves, and the 48 groups of embedded wire grooves are symmetrically distributed in the circumferential direction at an angle of 7.5 degrees in each groove by a trapezoidal groove or a pear-shaped groove; when the stator punching sheet body is used for a three-phase motor, the ABC three-phase windings respectively occupy 16 groups of wire embedding grooves, each phase of winding is eight poles, and each phase of coil is of an independent winding structure.