A new type of micro-turbine engine inspired motor device

Abstract

The present invention discloses a novel micro-turbine engine ignition motor device, which is composed of three major components: a turbine engine, an ignition motor, and an ignition motor fixing seat. The turbine engine also includes a turbine engine main shaft, a centrifugal compressor, and an impeller casing. The ignition motor also includes an ignition motor rotor, an ignition motor stator component, and an ignition motor wire. The advantages of the present invention are as follows: First, the ignition motor and the engine work as a generator at the same height, and do not require a reducer. At the same time, the generator does not require additional high-speed bearing support. The ignition motor rotor and the engine impeller front nut are made into an integrated structure, which can not only tighten the engine impeller, but also fix the generator rotor and magnet inside. Second, compared with low-speed brushed motors, the ignition motor has the advantages of long life, high reliability, and high power generation density.

Description

Technical Field

[0001] The present invention relates to the technical field of micro-turbine engines, in particular to a novel micro-turbine engine ignition motor device. Background Art

[0002] Micro-sized aircraft turbine engines can be categorized as micro-turbojets, micro-turboprops, and micro-turboshafts. Currently, most micro-sized aircraft turbine engines in use only have a starter motor. When the micro-sized aircraft turbine engine is started, the onboard power source drives the starter motor, which then rotates the compressor impeller rotor through the starter motor clutch until the micro-sized aircraft turbine engine accelerates to idle speed, after which the starter motor automatically disengages the compressor impeller rotor. In the early days, hydraulic and pneumatic mechanical transmission methods were widely used in large turbine engines. With the development of power systems and high-density circuits, power systems have been combined with traditional hydraulic and pneumatic mechanical transmissions to serve as the primary starting power system for micro-sized aircraft turbine engines during pre-start.

[0003] After the micro-aviation turbine engine is successfully started, the starting motor does not play any additional role, and may even be a burden on the weight of the micro-aviation turbine engine, especially affecting the endurance and fuel consumption rate of the micro-aviation turbine engine. Since the starting motor and the micro-aviation turbine engine rotor drive connection are achieved through an overrunning clutch, frequent starting seriously affects the life of the clutch and even affects the probability of successful starting of the micro-aviation turbine engine. As the working time of the micro-aviation turbine engine increases and the power consumption of the onboard equipment increases, the onboard battery often cannot support the requirements of long-term high-power power supply, and there are more urgent requirements for the power generation output of the micro-aviation turbine engine.

[0004] The present invention proposes a novel micro-turbine engine starter motor device. Based on the above situation, the present invention's starter motor can solve the above pain points. It uses an onboard small-capacity battery to drive the generator until the micro-turbine engine accelerates to idle speed. The starter motor then enters power generation mode. The generated AC power is processed by a rectifier and used to charge the battery and power onboard equipment. This starter motor is a high-speed generator operating at the same speed as the micro-turbine engine. It does not require a reducer or additional high-speed bearing support. The starter motor rotor is integrated with the micro-turbine engine impeller front nut, which not only tightens the micro-turbine engine impeller but also secures the generator rotor, including the magnets, within it. The starter motor stator is fixed to the motor base, which is bolted to the micro-turbine engine impeller housing via a support bracket, making it easy to install, disassemble, and maintain. Compared to low-speed brushed motors, this starter motor has the advantages of long life, high reliability, and high power density. This starter motor does not require separate liquid cooling; instead, heat generated by the starter motor is directly removed through cooling holes, eliminating the need for separate cooling piping and equipment, making it convenient to use. Summary of the Invention

[0005] The present invention proposes a novel micro-turbine engine starting motor device. This device, powered by an onboard small-capacity battery, drives a generator until the micro-turbine engine accelerates to idle speed. The starting motor then enters a power generation mode, generating alternating current that is processed by a rectifier and used to charge the battery and power onboard equipment. This starting motor is a high-speed generator operating at the same speed as the micro-turbine engine, requiring no reducer or additional high-speed bearing support. The starting motor rotor is integrated with the micro-turbine engine impeller front nut, which not only tightens the micro-turbine engine impeller but also secures the generator rotor, including magnets, within it. The starting motor stator is secured to the motor base, which is bolted to the micro-turbine engine impeller housing via a support bracket, making assembly, disassembly, and maintenance easier. Compared to low-speed brushed motors, this starting motor has the advantages of long life, high reliability, and high power density. This starting motor does not require separate liquid cooling; instead, heat generated by the starting motor can be directly removed through cooling holes, eliminating the need for separate cooling piping and equipment, making it convenient to use.

[0006] A technical solution adopted in the present invention is:

[0007] A novel micro-turbine engine ignition motor device consists of three major components: a turbine engine, an ignition motor, and an ignition motor fixing seat component; the turbine engine also includes a turbine engine main shaft, a centrifugal compressor, and an impeller cover, the turbine engine main shaft is sleeved in the central through hole of the centrifugal compressor, and the centrifugal compressor is arranged in the impeller cover; the ignition motor also includes an ignition motor rotor, an ignition motor stator component, and an ignition motor wire, the ignition motor rotor is connected to the turbine engine main shaft, and the ignition motor rotor is arranged in the ignition motor stator component.

[0008] Furthermore, a threaded hole is provided at the end of the turbine engine main shaft, and the direction of the thread rotation is opposite to the rotation direction of the centrifugal compressor.

[0009] Furthermore, the induction motor rotor also includes a magnet, which is arranged in the induction motor rotor. The induction motor rotor and the centrifugal compressor front nut are integrated.

[0010] Furthermore, an internal threaded hole is provided in the induction motor rotor, and the induction motor rotor is connected to the turbine engine main shaft through a threaded connection.

[0011] Furthermore, the stator component of the induction motor is wrapped by multiple groups of metal coils, air cooling holes are opened on the stator component of the induction motor, and the coils of the stator component of the induction motor are connected to the wires.

[0012] Furthermore, the induction motor fixing seat component also includes an induction motor fixing seat and a support frame, the induction motor stator component is arranged on the induction motor fixing seat, the induction motor fixing seat is connected and fixed through the support frame, the support frame is connected to the impeller cover, and a through hole a is opened on the induction motor fixing seat, and the through hole a is concentric with the air cooling hole.

[0013] Furthermore, a wire hole a and a fixing screw hole a are provided in the support frame, the wire hole a and the fixing screw hole a are through holes, and the outer surface of the support frame has a certain curvature.

[0014] Furthermore, the impeller housing is provided with a wire hole b and a fixing screw hole b, and the support frame is connected to the impeller housing by screws.

[0015] Furthermore, the induction motor fixing seat also includes an induction motor fixing bolt, and the induction motor fixing bolt is connected to the induction motor fixing seat.

[0016] Furthermore, the inspiratory motor wire also includes an inspiratory motor wire a, an inspiratory motor wire b, and an inspiratory motor wire c. The inspiratory motor wire a, the inspiratory motor wire b, and the inspiratory motor wire c respectively pass through the wire hole a provided in the support frame and then pass out from the wire hole b.

[0017] Furthermore, the induction motor is a three-phase AC brushless motor.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention uses an onboard small-capacity battery to power the generator until the micro-turbine engine accelerates to idle speed, and then the starting motor will enter the power generation mode. The generated AC power is processed by a rectifier and then used to charge the battery and power the onboard equipment.

[0020] 2. The inspiration motor of the present invention is a high-speed generator with the same speed as the micro-turbine engine. It does not require a reducer, and the generator does not need additional high-speed bearing support. The inspiration motor rotor is integrated with the front nut of the micro-turbine engine impeller, which can not only tighten the micro-turbine engine impeller, but also fix the generator rotor including the magnetic steel inside. The inspiration motor stator is fixed on the motor base, and the motor base is connected and fixed with the micro-turbine engine impeller cover bolts through a support frame, which is convenient for assembly and disassembly and maintenance.

[0021] 3. Compared with low-speed brushed motors, the induction motor of the present invention has the advantages of long life, high reliability and high power generation density; the induction motor does not require separate liquid cooling, and the heat generated by the induction motor can be directly taken away through the cooling hole, eliminating the need for separate cooling pipeline equipment and is easy to use.

[0022] 4. The motor fixing seat of the present invention has an aerodynamic design, which makes the air flow in the air inlet duct flow smoothly and has low flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a novel micro-turbine engine inspired motor device of the present invention;

[0024] Figure 2 This is a partially enlarged schematic diagram of a novel micro-turbine engine inspired motor device of the present invention;

[0025] Figure 3 It is a schematic diagram of the rotor component and the stator component of the induction motor of the present invention;

[0026] Figure 4 It is a schematic diagram of the motor fixing seat component and the impeller cover of the present invention;

[0027] Figure 5This is a schematic diagram of the inspiration motor fixing seat of the present invention;

[0028] Figure 6 It is a partial schematic diagram of the inspiration motor of the present invention;

[0029] The markings of the components in the accompanying drawings are as follows:

[0030] 1: Turbine engine, 11: Turbine engine main shaft, 12: Centrifugal compressor, 13: Impeller casing; 2: Inspired motor; 21: Inspired motor rotor, 22: Inspired motor stator component, 23: Inspired motor wire, 24: Magnet, 25: Metal coil, 26: Air cooling hole, 27: Wire, 28: Inspired motor wire a, 29: Inspired motor wire b, 210: Inspired motor wire c; 3: Inspired motor fixing seat component, 31: Inspired motor fixing seat, 32: Support frame, 33: Air cooling through hole a, 34: Wire hole a, 35: Fixing screw hole a, 36: Wire hole b, 37: Fixing screw hole b, 38: Inspired motor fixing bolt. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0032] like Figure 1-6 As shown, a novel micro-turbine engine ignition motor device in this embodiment is composed of three major components: a turbine engine 1, an ignition motor 2, and an ignition motor fixing seat component 3; the turbine engine 1 also includes a turbine engine main shaft 11, a centrifugal compressor 12, and an impeller shell 13, the turbine engine main shaft sleeve 11 is arranged in the central through hole of the centrifugal compressor 12, and the centrifugal compressor 12 is arranged in the impeller shell 13; the ignition motor 2 also includes an ignition motor rotor 21, an ignition motor stator component 22, and an ignition motor wire 23, the ignition motor rotor 21 is connected to the turbine engine main shaft 11, and the ignition motor rotor 21 is arranged in the ignition motor stator component 22;

[0033] In this embodiment, a threaded hole is provided at the end of the turbine engine main shaft 11, and the direction of the thread rotation is opposite to the rotation direction of the centrifugal compressor 12;

[0034] Furthermore, the induction motor rotor 21 further includes a magnet 24, which is disposed inside the induction motor rotor 21. The induction motor rotor 21 and the front nut of the centrifugal compressor 12 are integrated, thereby reducing the weight of the structure and being able to tighten the centrifugal compressor 12.

[0035] Furthermore, an internal threaded hole is provided in the induction motor rotor 21, and the induction motor rotor is connected to the turbine engine main shaft 11 through a threaded connection, so that the turbine engine 1 and the induction motor 2 have the same rotation speed, ensuring that the induction motor 2 and the turbine engine 1 will not be separated during operation;

[0036] Furthermore, the stator component 22 of the induction motor is wrapped by multiple groups of metal coils 25. The stator component 22 of the induction motor is provided with air cooling holes 26. The induction motor 2 does not need to be liquid-cooled separately. During the operation of the turbine engine 1, the heat generated in the induction motor 2 is directly taken away through the air cooling holes 26, thereby reducing the need for separate cooling piping equipment. The coils of the stator component 22 of the induction motor are connected to the wires 27 to ensure that the induction motor 2 forms a closed loop and operates normally.

[0037] Furthermore, the induction motor fixing seat component 3 also includes an induction motor fixing seat 31 and a support frame 32. The induction motor stator component 22 is provided on the induction motor fixing seat 31. The induction motor fixing seat 31 is connected and fixed by the support frame 32. The support frame 32 is connected to the impeller housing 13. A through hole a33 is opened on the induction motor fixing seat 32. The through hole a33 and the air cooling hole 26 are concentric through holes, which can cool the induction motor 2 during operation, thereby increasing its service life and improving work efficiency.

[0038] Furthermore, the support frame 32 is provided with a wire hole a34 and a fixing screw hole a35. The wire hole a34 and the fixing screw hole a35 are through holes. All power lines are preset inside the turbine engine 1 to reduce aerodynamic problems caused by external exposure. The outer surface of the support frame 32 has a certain curvature, so that the incoming airflow flows smoothly and reduces flow resistance.

[0039] Furthermore, the impeller housing is provided with a wire hole b36 and a fixing screw hole b37. The support frame 32 is connected to the impeller housing 13 by screws. The inspiration motor fixing base 31 is fixed to the impeller housing 13 by bolts through three of the support frames 32. The spacing between the three support frames 32 is 120 degrees, which is convenient for assembly and disassembly and maintenance.

[0040] Furthermore, the induction motor fixing seat 31 further includes an induction motor fixing bolt 38, the induction motor fixing bolt 38 is connected to the induction motor fixing seat 31, and the induction motor fixing bolt 38 fixes the induction motor stator component 22;

[0041] Furthermore, the inspiration motor wire 23 also includes an inspiration motor wire a28, an inspiration motor wire b29, and an inspiration motor wire c210. The inspiration motor wire a28, the inspiration motor wire b29, and the inspiration motor wire c210 respectively pass through the wire hole a28 provided in the support frame 32 and then pass out from the wire hole b36.

[0042] Furthermore, the induction motor 2 is a three-phase AC brushless motor. Compared with a low-speed brush motor, the induction motor 2 has the advantages of long life, high reliability and high power generation density.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or indirect application in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel micro-turbine engine ignition motor device, comprising a turbine engine (1), an ignition motor (2) and an ignition motor fixing seat component (3); characterized in that: The turbine engine (1) further comprises a turbine engine main shaft (11), a centrifugal compressor (12) and an impeller casing (13), wherein the turbine engine main shaft (11) is sleeved in a central through hole of the centrifugal compressor (12), and the centrifugal compressor (12) is arranged in the impeller casing (13); the induction motor (2) further comprises an induction motor rotor (21), an induction motor stator component (22), and an induction motor lead (23), wherein the induction motor rotor (21) is connected to the turbine engine main shaft (11), and the induction motor rotor (21) is arranged in the induction motor stator component (22); The induction motor rotor (21) further includes a magnetic steel (24), wherein the magnetic steel (24) is arranged in the induction motor rotor (21), and the induction motor rotor (21) and the front nut of the centrifugal compressor (12) are integrated; An internal threaded hole is provided in the induction motor rotor (21), and the induction motor rotor (21) is connected to the turbine engine main shaft (11) through a threaded connection; The stator component (22) of the induction motor is formed by wrapping a plurality of metal coils (25). The stator component (22) of the induction motor is provided with air cooling holes (26). The coils of the stator component (22) of the induction motor are connected to a wire (27). The induction motor fixing seat component (3) further includes an induction motor fixing seat (31) and a support frame (32), the induction motor stator component (22) is arranged on the induction motor fixing seat (31), the induction motor fixing seat (31) is connected and fixed by the support frame (32), the support frame (32) is connected to the impeller housing (13), and a through hole a (33) is opened on the induction motor fixing seat (31), and the through hole a (33) and the air cooling hole (26) are concentric through holes; The support frame (32) is provided with a wire hole a (34) and a fixing screw hole a (35), the wire hole a (34) and the fixing screw hole a (35) are both through holes, and the outer surface of the support frame (32) has a certain curvature; The induction motor wire (23) further includes an induction motor wire a (28), an induction motor wire b (29), and an induction motor wire c (210). The induction motor wire a (28), the induction motor wire b (29), and the induction motor wire c (210) respectively pass through a wire hole a (34) provided in the support frame (32) and then pass out from a wire hole b (36) provided in the impeller housing (13).

2. A novel micro-turbine engine inspired motor device according to claim 1, characterized in that: A threaded hole is provided at the end of the turbine engine main shaft (11), and the direction of the thread rotation is opposite to the rotation direction of the centrifugal compressor (12).

3. The novel micro-turbine engine ignition motor device according to claim 1 is characterized by: The impeller housing (13) is provided with a wire hole b (36) and a fixing screw hole b (37), and the support frame (32) is connected to the impeller housing (13) by screws.

4. The novel micro-turbine engine inspired motor device according to claim 1 is characterized by: The induction motor fixing seat (31) also includes an induction motor fixing bolt (38), and the induction motor fixing bolt (38) is connected to the induction motor fixing seat (31).

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