RU2525838C2 - Propulsor assy with motor and its aerodynamic propulsor - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to thrust generators and can be used in aircraft. Proposed assy incorporates motor with parallel stator parts and disc-type rotor with internal arrangement of torque transfer joint. Every base of motor stator and disc-type rotor consists of the joint of radial and chord elements. Disc-type rotor supports vertical elements secured at radial element inner ends whereat sealed protective guard and aerodynamic propulsor are secured. Assemblies of windings and electric power feed circuits, protective sealed guard, air feed and discharge openings are arranged at stator base chord element outer surface to cool down motor stator and rotor inner parts. It can comprises two or more identical motors wherein bases of rotors are integrated in a single gear by adapters while stators are coaxially jointed by adjacent bases.

EFFECT: expanded applications.

2 cl, 4 dwg

Description

The invention relates to devices for creating aerodynamic lifting thrust and can be used in aircraft heavier than air, for moving vehicles on an air cushion, for manufacturing high-power electric fans.

Known axial electric fan [1], combining in a single housing asynchronous electric motor and a single-stage axial fan. The asynchronous electric motor has an end face design. The electric fan housing consists of two load-bearing shields rigidly fastened together and forming a central annular cavity. On each of the supporting shields inside the annular cavity, one stator magnetic circuit is fixed. A rotor magnetic circuit is located between them, separated from the stator magnetic circuits by air gaps. The rotor shaft is structurally combined with the fan impeller and is made in the form of a sleeve. On the outer surface of the sleeve, an annular rim carrying the rotor magnetic circuit is rigidly set. The impeller blades are fixed on the inner surface of the sleeve, the inner surfaces of which cover the outer surface of the fairing with a minimum air gap, which is conical in shape from the air inlet side. The disadvantages of this design of the electric fan are such parameters as the fact that it is designed for small dimensions and small power, cooling of the electric motor is not provided.

The prototype of the propulsion unit with an electric motor is one of the options for an electric machine [2] and [3]. The electric machine has a frame with a parallel arrangement of two parts of the stator and a disk rotor with an internal connection for transmitting torque to the load. The frame consists of two bases connected from the outside by interconnected elements. A stator part is fixed on each base on supports made of non-magnetic and dielectric material, sliding supports for fixing gaps between the active sides of the magnetic circuits of the stator and disk rotor parts. The rotor magnetic circuits are located on the disk rotor, sliding surfaces for fixing gaps between the active sides of the stator and rotor magnetic cores, and a cylindrical surface for fixing the disk rotor relative to the axis of rotation. On the elements are sliding bearings for fixing the disk rotor relative to the axis of rotation. A disadvantage of the described electric machine is the difficulty of manufacturing the stator and rotor bases, their large mass.

The claimed invention solves the problem of creating a propulsion unit with an electric motor of large dimensions and low weight with an expanded scope, cooling the internal cavity of an electric motor, combining several identical induction motors of the same type to operate on a single mover in one design.

This is achieved by the fact that the propulsion unit with an electric motor consists of an aerodynamic propulsion unit and an asynchronous electric motor with a parallel arrangement of two parts of the stator and a disk rotor between them with the internal joints of the transmission of torque to the aerodynamic propulsion unit. The engine has a frame, which consists of two bases, interconnected from the outside by elements in one piece. A stator part is fixed on each base on supports made of non-magnetic and dielectric material, sliding supports for fixing gaps between the active sides of the magnetic circuits of the stator and disk rotor parts. The rotor magnetic circuits are located on the disk rotor, sliding surfaces for fixing gaps between the active sides of the stator and rotor magnetic cores, and a cylindrical sliding surface for fixing the disk rotor relative to the axis of rotation. On the elements are sliding bearings for fixing the disk rotor relative to the axis of rotation. Each stator and disk rotor base consists of connections of radial and chord elements. On the basis of the disk rotor, vertical elements are installed at the inner ends of the radial elements, on which a sealed protective guard and an aerodynamic propulsion are fixed. On the external part of the chordal elements of the stator bases, electrical assemblies of connections and power supply are installed. On the outer planes of the stator bases and on the outer perimeter on the chord elements, a protective tight enclosure is installed. In the external protective enclosure there are windows for supplying and outflowing air for cooling the internal parts of the stator and rotor of the motor.

The propulsion unit is characterized in that it can contain two or more of the same type of asynchronous motor with a parallel arrangement of two parts of the stator and disk rotor with an internal torque transmission connection. The base of the rotors are combined into one unit with transitional devices with common mounting points for transmitting torque to the aerodynamic propulsion. The stators of the motors are interconnected coaxially by fixing adjacent bases.

Figures 1 and 2 show a mover assembly with an electric motor, figure 3 shows the base of a stator part, and figure 4 shows the base of a disk rotor.

The mover unit with an electric motor contains an aerodynamic mover 1 and an asynchronous electric motor 2 with a parallel arrangement of two parts of the stator 3 and a disk rotor 4 with internal places of connection 5 of the torque transmission. The engine 2 has a frame, which consists of two bases 6, interconnected from the outside by the elements 7 as a whole. On each base 6, a part of the magnetic circuit 8 of the stator 3 is fixed on supports 9 of non-magnetic and dielectric material, sliding bearings 10 for fixing the gaps 11 between the active sides of the magnetic circuits 8 and 12 of the parts of the stator 3 and the disk rotor 4. On the base 13 of the disk rotor 4 there are magnetic circuits 12 and sliding surfaces 14 for fixing the gaps 11 between the active sides of the magnetic circuits 8 and 12 of the parts of the stator 3 and the rotor 4 and a cylindrical sliding surface 15 for fixing the disk rotor 4 relative to the axis of rotation 16. On the elements 7 there are sliding supports 17 for fixing the disk rotor 4 relative to the axis of rotation 16. On the vertical elements 18 of the base 13 of the disk rotor 4, a protective sealed guard 19 and the mover 1 are fixed at the joints 5. On the outer planes of the bases 6 and along the outer perimeter on the elements 7, protective fences 20 and 21 are installed. On the bases 6, electric assemblies 22 of the stator windings and the power supply are installed. Along the perimeter of the bases 6 are the attachment points 23 of the aerodynamic propulsion device 1 to the main structure or the connection of the same engines 2 to each other.

Figure 3 shows the base 6 of the stator part 3 of engine 2. It consists of connecting the radial and chord elements 24, 25 and 26 with the location of the mounting points 23.

Figure 4 shows the base 13 of the disk rotor 4 of the engine 2. It consists of a connection of radial and chord elements 27, 28 and 29 and vertical elements 18.

The site of the propulsion device 1 with an electric motor 2 operates as follows. When connecting the stator windings 3 of the motor 2 to the network in the annular cavity of the carcass of the motor 2 through the magnetic circuits of the 8 parts of the stator 3, a rotating magnetic field arises, which, when interacting with the currents induced in the magnetic circuit 12 of the disk rotor 4, creates an electromagnetic moment that drives the base 13 of the rotor 4 into rotation together with the propulsion device 1, fixed at the joints 5.

With the design of the mover 1 assembly with two or more engines of the same type 2, the operation of the mover 1 assembly is similar.

The performance of the mover unit with an electric motor depends on the parameters of the mover 1, the installed power of the engines 2, the ability to control their rotation speed. On its basis, high-power fan units can be designed.

Information sources

1. Patent RU 2184274 C1, 13.11.2000.

2. Patent LV 13374, 05.24.2004.

3. Patent LV 14008, March 19, 2008.

Claims (2)

      1. The mover unit with an electric motor, consisting of an aerodynamic mover and a three-phase asynchronous electric motor with a parallel arrangement of two parts of the stator and a disk rotor with internal places of connection of the transmission of torque having a frame, which consists of two bases, interconnected from the outside by elements in one unit, on each base a part of the stator is fixed on supports made of non-magnetic and dielectric material, sliding supports for fixing gaps between active sides of the magnetic circuits of the stator and disk rotor parts, a disk rotor on which the magnetic circuits of the rotor are located, sliding surfaces for fixing the gaps between the active sides of the magnetic circuits of the stator and the rotor and a cylindrical sliding surface for fixing the disk rotor relative to the axis of rotation, sliding supports for fixing the disk rotor are located on the elements relative to the axis of rotation, characterized in that each base of the stator of the disk rotor consists of connections of radial and chordal elements On the base of the disk rotor, vertical elements are installed on the inner ends of the radial elements, on which a sealed protective guard and an aerodynamic propulsion are mounted, on the external part of the chordal elements of the stator bases, electric assemblies of the connections of the windings and power supply are installed, on the outer planes of the bases and along the outer perimeter chordal elements are equipped with a protective tight enclosure; in the external protective enclosure there are windows for air supply and outflow for cool the internal parts of the stator and rotor.        2. The propulsion unit according to claim 1, characterized in that it contains two or more of the same type of three-phase asynchronous motors with a parallel arrangement of two parts of the stator and disk rotor with an internal torque transmission connection, in which the rotor bases are integrated into one unit by transition devices with common attachment points for transmitting torque to the aerodynamic propulsion device, and engine stators are interconnected coaxially with the attachment of adjacent bases.

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