CN218093469U - Induction asynchronous axial flow type electric fluid power device - Google Patents

Abstract

The utility model discloses an induction asynchronous axial flow type electric fluid power device, which comprises a stator component, a rotor component, a rear cover plate, a casing, a front cover plate and a bearing; the rotor assembly comprises a blade mandrel, blades, a rotor conductor, a rotor short-circuit ring, a blade outer barrel and a rotor iron core; the casing is the tubular structure, back shroud and front shroud are fixed respectively in the front and back both sides of tubular casing, annular stator module is fixed near cylindric cavity inner wall, the active cell subassembly is arranged in stator module, blade urceolus inner wall is connected with the blade mandrel through a plurality of blade that circumference evenly arranged, rotor core inner wall is fixed near blade urceolus outer wall, a plurality of slotted holes are evenly seted up to rotor core outer wall, the rotor conductor is installed and is fixed in the slotted hole, rotor conductor both ends all are connected with rotor short circuit ring, rotor short circuit ring passes through the bearing and rotates sealing connection with back shroud and front shroud, fluid entry and fluid outlet are seted up respectively in back shroud and front shroud middle part. The volume is small, and the operation efficiency is high.

Description

Induction asynchronous axial flow type electric fluid power device

The technical field is as follows:

the utility model belongs to the technical field of the electromagnetic pump, concretely relates to asynchronous axial-flow type electronic fluid power device of response can be applied to the work occasion of current like pump, reduces the volume, improves the operating efficiency.

Background art:

at present, the existing fluid power devices such as a fan, a water pump, an oil pump and the like are very commonly applied, and almost more than 30% of the total human power consumption is consumed. In a conventional axial flow fluid power device, a motor drives an axial flow blade to rotate, so as to drive a fluid to enter from one end and discharge from the other end. The main disadvantages of the above system are: the motor generates large flow resistance loss to fluid; the clearance between the blades and the inner wall of the pipeline is large, internal leakage and fluid backflow are large, and the system efficiency is low. The electromagnetic pump can solve the problems to a certain extent, for example, patent cn201120327271.X discloses a direct-drive electromagnetic pump, which mainly comprises a motor shell, a motor stator iron core, a motor stator winding, a motor rear end cover, a motor shaft, a motor rear bearing, a connecting key, a motor rotor iron core, permanent magnetic steel, a motor front bearing, an isolating sleeve, a motor front end cover, a gland nut, an impeller, a sealing ring and a pump shell. The stator iron core is pressed into the motor shell after being laminated, and the stator winding is placed in the stator iron core. The rotor core is pressed on a motor shaft after being laminated, permanent magnetic steel is installed on the rotor core, a key groove is formed in the motor shaft, a connecting key is placed on the motor shaft, torsion force borne by the motor core is transmitted to the motor shaft, the motor shaft is connected with an impeller and fixed through a compression nut, the impeller rotates along with the motor shaft to pump liquid, an isolation sleeve is a key part of a direct-drive electromagnetic pump and is of a cylindrical structure, the outer edge of the isolation sleeve is connected with a motor shell and a motor front end cover respectively, conveying liquid is prevented from entering a motor stator, a motor rear bearing is fixed inside the isolation sleeve and is used for supporting the weight of a motor rotor and the weight of the impeller together with a motor front bearing placed on the motor front end cover, the motor rear end cover plays a role in protecting the motor, and a pump shell is used for guiding and conveying liquid besides being connected with the motor part; patent CN202021978323.5 discloses a permanent magnet synchronous electromagnetic pump, which comprises a shell structure, a stator structure, a rotor structure and an impeller, wherein the shell structure is provided with a water inlet and a water outlet, a water inlet cavity, a water outlet cavity and a rotor cavity are arranged in the shell structure, the water inlet cavity, the water outlet cavity and the rotor cavity are communicated in the shell structure, the water inlet is connected with the water inlet cavity, the water outlet is connected with the water outlet cavity, the rotor structure is arranged in the rotor cavity, the rotor structure is internally provided with a rotating shaft, a plastic rotor and a magnetic core, the impeller is arranged in the water inlet cavity and is connected with the rotor structure, the water inlet and the rotating shaft are positioned on the same straight line, the stator structure is arranged in the shell structure and sleeved outside the rotor cavity, the impeller and the rotor structure are integrated, a magnetic core in the rotor structure is wrapped by a plastic rotor and is arranged at the rear section of the rotating shaft far away from the water inlet, the plastic rotor is provided with a filter disc with water holes at the front section of the rotor cavity close to the water inlet direction, the outer wall of the magnetic core part in the rotor structure is provided with an axial shock absorption block, a gap is reserved between the shock absorption block and the inner wall of the rotor cavity, the shock absorption blocks are provided with a plurality of blocks, intervals are reserved among the shock absorption blocks, the shock absorption blocks are made of shock absorption materials, when the water-saving device works, the stator winding is electrified to form a magnetic field, the magnetic core is arranged in the rotor structure, the magnetic core rotates under the action of the magnetic field to drive the rotor structure and the impeller to rotate, the impeller rotates rapidly in water to form a negative pressure environment, so that water flows into the water inlet cavity from the water inlet, and provides a thrust force for water in the rotation process of the impeller, so that the water is pushed into the water outlet cavity and is discharged out of the electromagnetic pump through the water outlet. However, the electromagnetic pump is radial in overall structure, fluid enters a pump cavity and is accelerated radially to form pressure and then is output outwards, the blades are located at one end of the overall structure of the pump, the length of the pump body is increased, in addition, the eddy loss inside the fluid is too large, and the overall efficiency is reduced.

The utility model has the following contents:

the utility model aims to provide an induction asynchronous axial flow type electric fluid power device with simpler structure, which integrates a traditional permanent magnet synchronous motor and an axial flow blade into a whole, and the outer edge of the blade is connected with the wall surface of a flow channel and rotates together to reduce the internal leakage and backflow of fluid; the periphery of the flow channel is provided with an electrodynamic force structure of the permanent magnet synchronous motor, alternating voltage is applied to the three winding wires to generate a rotating magnetic field, the rotating magnetic field and the magnetic field of the permanent magnet interact to generate electromagnetic torque, the blades are driven to rotate synchronously with the electromagnetic field, fluid is sucked and axially pushed, and then fluid power is output, so that the fluid power device which is free of a distributing valve, compact in structure, high in speed and high in efficiency is formed.

In order to achieve the above object, the present invention relates to an inductive asynchronous axial flow type electric fluid power device, the main structure of which comprises a stator assembly, a rotor assembly, a rear cover plate, a casing, a front cover plate and a bearing; the rotor assembly comprises a blade mandrel, blades, a rotor conductor, a rotor short-circuit ring, a blade outer barrel and a rotor iron core; the casing is a cylindrical structure, a rear cover plate and a front cover plate are respectively fixed at openings on the front side and the rear side of the cylindrical casing, a cylindrical cavity is formed inside the casing, a stator assembly, a rotor assembly and the casing are coaxially arranged, the annular stator assembly is fixed close to the inner wall of the cylindrical cavity, the rotor assembly is arranged in the stator assembly and has a certain movement gap with the stator assembly, two ends of the rotor assembly are respectively in rotating sealing connection with the rear cover plate and the front cover plate through bearings, the inner wall of a blade outer barrel is connected with a blade mandrel through a plurality of blades which are uniformly arranged in the circumferential direction, a rotor core is of an annular structure formed by overlapping silicon steel sheets, the inner wall of the rotor core is fixed close to the outer wall of the blade outer barrel 11, a plurality of slots are uniformly formed in the circumferential direction on the outer wall of the rotor core, rotor conductors are installed and fixed in the slots, two ends of the rotor conductors are both connected with a rotor short circuit to form a series of short circuit conductive loops, the rotor short circuit is in transition fit with the inner ring of the bearings, and a fluid inlet and a fluid outlet communicated with the cylindrical cavity are respectively formed in the middle parts of the rear cover plate and the front cover plate.

The utility model relates to a rotor conductor's material is copper or aluminium.

The utility model relates to a blade has certain inclination in the axial.

The utility model relates to a blade mandrel middle part is cylindrical, and both ends are the taper, around the blade mandrel both ends respectively with front shroud and back shroud between have the certain distance.

The utility model relates to a back shroud and front shroud inboard all are equipped with annular bearing housing hole, and the bearing is fixed in the bearing housing hole, and the rotor short circuit ring outer wall that is close to the front shroud is connected with the bearing inner race transition fit, and a terminal surface of the rotor short circuit ring that is close to the front shroud leans on the front shroud, and another terminal surface leans on the terminal surface that rotor conductor, blade urceolus and rotor core formed; the outer wall of the rotor short circuit ring close to the rear cover plate is in transition fit connection with the inner ring of the bearing, one end face of the rotor short circuit ring close to the rear cover plate abuts against the rear cover plate, and the other end face of the rotor short circuit ring close to the rear cover plate abuts against the end face formed by the rotor conductor, the blade outer cylinder and the rotor iron core.

Preferably, the rotor short circuit ring is designed in one piece with the rotor conductor, the blade outer barrel, the blades and the blade spindle.

The utility model relates to a stator module includes stator core and stator winding, and stator core is the loop configuration or other soft magnetic material that the silicon steel sheet coincide formed, and a plurality of slotted hole are evenly seted up to stator core inner wall circumference, and the stator winding installation is fixed in the slotted hole.

The utility model relates to a front shroud and back shroud pass through fasteners such as bolt and casing front end fastening connection.

Compared with the prior art, the utility model following beneficial effect has: the internal space of the shell is divided into two independent chambers through the blade outer cylinder: the fluid only flows in the cylindrical cavity, the electromagnetic structure is arranged in the annular cavity, the fluid and the electromagnetic structure are isolated, and the influence of the fluid on the electromagnetic structure is avoided; the electromagnetic structure, the axial flow blades and the like are integrated into a whole, and the rotor rotates and drives the blades to rotate at the same time to drive fluid to axially flow; the whole device has compact structure, high volume efficiency, reliable work, high-speed work and higher popularization and application value.

Description of the drawings:

fig. 1 is a schematic longitudinal sectional view of an induction asynchronous axial flow type electric fluid power device according to embodiment 1.

Fig. 2 is a schematic cross-sectional view of an induction asynchronous axial flow type electric fluid power plant according to embodiment 1.

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example 1:

the main structure of the induction asynchronous axial flow type electric fluid power device related to the embodiment comprises a stator component, a rotor component, a rear cover plate 3, a casing 4, a front cover plate 8 and a bearing 9; the stator assembly comprises a stator core 6 and a stator winding 7, and the rotor assembly comprises a blade mandrel 1, blades 2, a rotor conductor 5, a rotor short-circuit ring 10, a blade outer barrel 11 and a rotor core 12; the casing 4 is a cylindrical structure, the back cover plate 3 and the front cover plate 8 are respectively fixed at the front and back openings of the cylindrical casing 4, a cylindrical cavity is formed inside the casing, the stator assembly, the rotor assembly and the casing 4 are coaxially arranged, the annular stator assembly is fixed close to the inner wall of the cylindrical cavity, the rotor assembly is arranged in the stator assembly and has a certain movement gap with the stator assembly, two ends of the rotor assembly are respectively connected with the back cover plate 3 and the front cover plate 8 in a rotating and sealing mode through bearings 9, fluid is prevented from flowing into the stator assembly, the inner wall of the blade outer barrel 11 is connected with the blade mandrel 1 through a plurality of blades 2 which are uniformly arranged in the circumferential direction, the rotor core 12 is an annular structure formed by overlapping silicon steel sheets, the inner wall of the rotor core 12 is fixed close to the outer wall of the blade outer barrel 11, a plurality of slots are uniformly formed in the circumferential direction on the outer wall of the rotor core 12, a rotor conductor 5 is installed and fixed in the slots, two ends of the rotor conductor 5 are both connected with a rotor short circuit, a series of short circuit is formed, the rotor short circuit is connected with the inner ring 10 of the bearings 9 in a transition fit mode, the middle of the back cover plate 3 and the front cover plate 8, a fluid inlet and a fluid outlet which are respectively communicated with the cylindrical cavity, a rotating magnetic field is formed in the stator assembly, the rotating magnetic field assembly is driven, the blades 2, the rotating of the rotor assembly, fluid flows out through the blades 2, and flows out from the axial direction of the blades, and flows out of the rotor assembly.

The material of the rotor conductor 5 according to the present embodiment is usually copper or aluminum.

The blade 2 that this embodiment relates to has certain inclination in the axial, and when the active cell subassembly rotated of being convenient for, fluid can get into from the fluid entry of apron 8, through blade 2 along the axial propelling movement, discharges from the fluid export of back shroud 3.

The middle part of the blade mandrel 1 related to the embodiment is cylindrical, two ends are conical to reduce the fluid resistance, and the front end and the rear end of the blade mandrel 1 are respectively spaced from the front cover plate 8 and the rear cover plate 3, so that the fluid can conveniently flow in and out.

The inner sides of a rear cover plate 3 and a front cover plate 8 related to the embodiment are both provided with annular bearing seat holes, a bearing 9 is fixed in the bearing seat holes, the outer wall of a rotor short circuit ring 10 close to the front cover plate 8 is in transition fit connection with the inner ring of the bearing 9 at the side of the front cover plate 8, one end face of the rotor short circuit ring 10 close to the front cover plate 8 is abutted to the front cover plate 8, and the other end face is abutted to the end face formed by a rotor conductor 5, a blade outer cylinder 11 and a rotor iron core 12; the outer wall of a rotor short circuit ring 10 close to the rear cover plate 3 is in transition fit connection with the inner ring of a bearing 9 on the side of the front cover plate 8, one end face of the rotor short circuit ring 10 close to the rear cover plate 3 is abutted against the rear cover plate 3, and the other end face of the rotor short circuit ring is abutted against the end face formed by the rotor conductor 5, the blade outer cylinder 11 and the rotor iron core 12; the rotor short circuit ring 10, the rotor conductor 5, the blade outer cylinder 11, the blade 2 and the blade mandrel 1 can be cast into a whole, so that the rigidity of the rotor assembly is improved, and the process cost is reduced.

The stator assembly that this embodiment relates to includes stator core 6 and stator winding 7, and stator core 6 is the annular structure that silicon steel sheet coincide formed, or other soft magnetic material, and a plurality of slotted holes are evenly seted up to 6 inner wall circumferences of stator core, and stator winding 7 is installed and is fixed in the slotted hole. The stator winding 7 is a three-phase winding and can be in lap winding or wave winding form.

The housing 4 according to the present embodiment can be embedded in other base bodies or connected to other base bodies through a base.

The front cover plate 8 and the rear cover plate 3 according to the embodiment are fastened and connected to the front end of the housing 4 by fasteners such as bolts.

The specific working process of the induction asynchronous axial flow type electric fluid power device related to the embodiment is as follows: alternating voltage is applied to the stator winding 7, alternating current is generated in the stator winding 7, a rotating magnetic field is further generated in the stator iron core 6, the rotor conductor 5 cuts magnetic lines of force, induced electromotive force is generated, current is further generated in a current loop formed by the rotor conductor 5 and the rotor short-circuit ring 10, the current generates electromagnetic torque under the action of the magnetic field, and the rotor assembly is driven to rotate in the same direction at a rotating speed slightly lower than the rotating magnetic field. When the rotor subassembly rotated, fluidum got into from the fluidum entry, under the axial promotion of blade 2, flowed from the fluidum export, so constantly, outwards continuously output fluid power, has converted the electric energy into fluid pressure ability.

In the embodiment, the space in the casing 4 is divided into two independent chambers by the blade outer cylinder 11, the middle part of the blade outer cylinder 1 is enclosed into a cylindrical cavity and an annular cavity between the blade outer cylinder 1 and the casing 4, fluid only flows in the cylindrical cavity, and the electromagnetic structure is arranged in the annular cavity to isolate the fluid from the electromagnetic structure, so that the influence of the fluid on the electromagnetic structure is avoided; the electromagnetic structure and the axial flow blades are integrated into a whole, and the rotor rotates and simultaneously drives the blades 2 to rotate so as to drive fluid to flow; the whole device has compact structure, the volume utilization rate is improved by more than 15%, the operation is reliable, the overall efficiency is improved by more than 20% compared with the prior art, and the device has higher popularization and application values.

Claims (9)

1. An induction asynchronous axial flow type electric fluid power device is characterized in that the main structure comprises a stator assembly, a rotor assembly, a rear cover plate, a casing, a front cover plate and a bearing; the rotor assembly comprises a blade mandrel, blades, a rotor conductor, a rotor short-circuit ring, a blade outer barrel and a rotor iron core; the casing is the tubular structure, back shroud and front shroud are fixed respectively at the front and back both sides opening part of tubular casing, inside forms cylindric cavity, stator module, active cell subassembly and casing coaxial center set up, annular stator module is fixed near cylindric cavity inner wall, active cell subassembly arrange in stator module and have certain movement clearance between the stator module, blade urceolus inner wall is connected with the blade mandrel through a plurality of blade that circumference evenly arranged, annular rotor core inner wall is fixed near 11 outer walls of blade urceolus, rotor core outer wall evenly offers a plurality of slotted holes in circumference, rotor conductor installs and fixes in the slotted hole, rotor conductor both ends all are connected with a rotor short circuit ring, form series short circuit conductive loop, rotor short circuit ring passes through bearing and back shroud and front shroud rotation sealing connection, fluid inlet and the fluid export with cylindric cavity intercommunication are seted up respectively in back shroud and front shroud middle part.

2. An induction asynchronous axial flow electrohydrodynamic device as claimed in claim 1, characterized in that the material of the rotor conductors is copper or aluminium.

3. The inductive asynchronous axial flow electric fluid dynamic device of claim 1, wherein the blades are angled in the axial direction.

4. The induction asynchronous axial flow type electric fluid power device as claimed in claim 1, wherein the blade spindle has a cylindrical middle portion and tapered ends, and the front and rear ends of the blade spindle are spaced apart from the front and rear cover plates, respectively.

5. The inductive asynchronous axial flow electrohydrodynamic apparatus according to claim 1, wherein the inner sides of the back cover plate and the front cover plate are provided with annular bearing seat holes, the bearings are fixed in the bearing seat holes, the outer wall of the rotor short circuit ring close to the front cover plate is in transition fit connection with the inner ring of the bearing, one end face of the rotor short circuit ring close to the front cover plate abuts against the front cover plate, and the other end face abuts against the end face formed by the rotor conductor, the outer blade cylinder and the rotor core; the outer wall of the rotor short circuit ring close to the rear cover plate is in transition fit connection with the bearing inner ring, one end face of the rotor short circuit ring close to the rear cover plate abuts against the rear cover plate, and the other end face of the rotor short circuit ring abuts against the end face formed by the rotor conductor, the blade outer barrel and the rotor iron core.

6. An inductive asynchronous axial flow electrohydrodynamic device according to claim 1, characterized in that the rotor short circuit ring is designed in one piece with the rotor conductor, the blade outer barrel, the blades and the blade spindle.

7. The inductive asynchronous axial flow type electric fluid dynamic device as claimed in claim 1, wherein the stator assembly comprises a stator core and a stator winding, the stator core is an annular structure formed by laminating silicon steel sheets or other soft magnetic materials, a plurality of slots are uniformly arranged on the inner wall of the stator core in the circumferential direction, and the stator winding is mounted and fixed in the slots.

8. The induction asynchronous axial flow electric fluid power unit as claimed in claim 1, wherein the front cover plate and the rear cover plate are fastened to the front end of the casing by fastening members such as bolts.

9. The induction asynchronous axial flow electric fluid dynamic device as claimed in claim 1, wherein the rotor core is a ring structure formed by laminating silicon steel sheets.

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