A dual-rotor internal combustion engine generator

Abstract

The present invention belongs to the technical field of power generation equipment, and specifically relates to a dual-rotor internal combustion engine generator, whose main structure includes a lifting ring, a base, a stator housing, a stator housing end cover, a control box, an outer rotor housing, an outer rotor left end cover, an outer rotor right end cover, a winding, an inner rotor, a rotor shaft, a connecting flange, an inner bearing, an outer bearing, a collector ring assembly and a planetary gear mechanism; the planetary gear mechanism includes a planetary carrier shaft, a planetary gear, a sun gear, an inner gear ring and a gear end cover; the present invention utilizes a planetary gear transmission mechanism, and the inner and outer rotors rotate in opposite directions, thereby achieving low-speed input and high-power output while occupying a small space, being easy to manufacture and install, and having a friendly application environment.

Description

Technical field:

[0001] The invention belongs to the technical field of power generation equipment, and in particular relates to a dual-rotor internal combustion engine generator, which utilizes the reverse rotation of a winding rotor and a magnet rotor to improve power generation efficiency. Background technology:

[0002] The principle of generator power generation is to use the external mechanical force to drive the conductor coil to rotate in the magnetic field, and continuously cut the magnetic flux lines to generate induced electromotive force and output electricity. Traditional power generation equipment generally has a fixed stator and a rotor that rotates relative to the stator. When the speed is low, in order to increase the power generation power, gear transmission is usually used to increase the speed. The power generation efficiency is low at low speeds, but because the transmission mechanism occupies space, this method cannot be implemented when the space of the generator is limited. In order to improve the power generation efficiency of the generator, people have developed a dual-rotor generator. The windings and magnets of the dual-rotor generator rotate in opposite directions at the same time, which improves the efficiency of power generation.

[0003] In the prior art, a utility model patent with application number 200620167795.6 discloses a dual-rotor generator, wherein a housing (1) supports and protects the machine body and fixes the machine body, and is connected to a secondary rotor (2) through a bearing (8). The secondary rotor (2) is composed of a coil (12), connected to a secondary power wheel (4) through a secondary power shaft (6), and moves in the opposite direction to the main rotor (3) under the action of an external force. The main rotor (3) is composed of a magnet (11), connected to a main power wheel (10) through a main power shaft (9), and forms an opposite movement with the secondary rotor (2) under the action of an external force. The main rotor (3) and the secondary rotor (2) are connected through a bearing (8). An output wire (7) is connected to the coil (12) and to a brush (5) to output current. The utility model patent with application number 201520640863.5 discloses a vertical axis dual rotor generator, including a generator shaft, an inner rotor assembly, an outer rotor assembly and a collector ring assembly, wherein the generator shaft is vertically arranged, and the lower end is rotatably arranged in a cylindrical base; the inner rotor assembly includes a winding fixed on the generator shaft, the outer rotor assembly includes a housing rotatably arranged on the generator shaft and a magnet fixed on the inner wall of the housing, the magnet is arranged around the winding, and the generator shaft and the housing are respectively provided with inner and outer rotor driving devices with opposite directions; the collector ring assembly includes a conductive ring, a brush and a brush holder, the conductive ring is fixed on the outer circumferential surface of the base and is electrically connected to the winding, and the brush is arranged on the brush holder and matched with the conductive ring. The above patents can realize the reverse rotation of the winding and the magnet, and improve the power generation, but the above patents all use two opposite power sources, which cannot solve the problem of power generation when there is only one low-speed power source. Summary of the invention:

[0004] The purpose of the present invention is to overcome the defects of the prior art. In view of the low power generation efficiency of conventional generators at low speeds and the problem that the existing dual-rotor generators cannot be applied to a low-speed power source, a dual-rotor internal combustion engine generator is designed under the conditions of mass production, reasonable structure and low cost, which can be used together with an internal combustion engine to form an internal combustion engine generator set.

[0005] In order to achieve the above-mentioned purpose, the dual-rotor internal combustion engine generator of the present invention has a main structure including a lifting ring, a base, a stator housing, a stator housing end cover, a control box, an outer rotor housing, an outer rotor left end cover, an outer rotor right end cover, a winding, an inner rotor, a rotor shaft, a connecting flange, an inner bearing, an outer bearing, a collector ring assembly and a planetary gear mechanism; the left side of the stator housing is fixedly connected to the stator housing end cover by bolts, and the right side is connected to the internal combustion engine, the lifting ring is welded and fixedly arranged above the stator housing for hoisting use, the base is arranged below the stator housing, and the control box is arranged on the stator housing; inside the stator housing, the cylindrical outer rotor housing is fixedly connected to the outer rotor left end cover and the outer rotor right end cover, and the winding is arranged outside the winding rotor. The inner rotor is fixedly arranged on the rotor shaft inside the outer rotor housing, and the position of the inner rotor is opposite to the winding; the rotor shaft and the left end cover of the outer rotor transmit power through a planetary gear mechanism, and the planetary gear mechanism includes a planetary carrier shaft, planetary gears, a sun gear, an inner gear ring and a gear end cover. The left side of the planetary carrier shaft is fixed to the inner center of the stator housing end cover, and the right side of the planetary carrier is rotatably arranged with four planetary gears. The sun gear is fixedly sleeved on the rotor shaft and meshes with the four planetary gears; the inner gear ring is arranged at the central opening of the left end cover of the outer rotor, and the inner gear ring is meshed with the other side of the planetary gear; the gear end cover is fixedly arranged on the right side of the planetary carrier shaft to prevent oil splashing; the left end cover of the outer rotor is rotatably connected to the planetary carrier shaft through an external bearing.

[0006] The outer rotor right end cover of the present invention has an opening in the center, one end of the rotor shaft enters the inner part of the outer rotor shell and is rotatably connected to the planetary carrier shaft through an inner bearing, and the other end of the rotor shaft extends out of the outer rotor right end cover and is fixedly connected to the connecting flange.

[0007] The dual-rotor internal combustion engine generator described in the present invention also includes a right end cover of the outer shell and a double-layer bearing, and the right end cover of the outer shell is fixedly arranged on the right side of the stator outer shell; the double-layer bearing is composed of an outer ring, an inner ring, a flange sleeve, a sphere, a threaded hole and a stopper, a group of spheres are arranged between the outer ring and the flange sleeve, and a group of spheres are arranged between the flange sleeve and the inner ring, so that the outer ring, the inner ring and the flange sleeve can rotate relative to each other; a circle of stoppers is arranged on the outer side of the flange sleeve, and a plurality of threaded holes are evenly arranged on the flange sleeve around the axis; the inner ring of the double-layer bearing is fixedly connected to the rotor shaft, the outer side of the outer ring is fixedly connected to the double-layer bearing outer shell end cover, the outer rotor right end cover is fixedly connected to the flange sleeve, and the stopper corresponds to the raised structure on the outer rotor right end cover, which is used for positioning to ensure the coaxiality of the double-layer bearing and the outer rotor right end cover.

[0008] One end of the outer rotor right end cover involved in the present invention is end cover-shaped and the other end is shaft-shaped. The end cover-shaped end of the outer rotor right end cover is fixedly connected to the outer rotor shell, and the shaft-shaped end is fixedly connected to the connecting flange. The rotor shaft is arranged inside the outer rotor shell and the outer rotor right end cover, and the two ends of the rotor shaft are rotatably connected to the outer rotor right end cover and the outer rotor left end cover respectively through bearings.

[0009] The inner rotor involved in the present invention is a permanent magnet rotor.

[0010] The inner rotor involved in the present invention is an excitation winding rotor, and the dual-rotor internal combustion engine generator also includes an outer rotor auxiliary winding, an inner rotor auxiliary winding and a rotating rectifier; the rotating rectifier is arranged on the rotor shaft, the outer rotor auxiliary winding is electrically connected to the outer rotor main winding through a voltage regulator, and the inner rotor auxiliary winding is electrically connected to the excitation winding rotor through the rotating rectifier.

[0011] The collector ring assembly involved in the present invention comprises a slip ring, a carbon brush holder and a carbon brush. The annular slip ring is arranged on the outer side of the left end cover of the outer rotor, and the slip ring is electrically connected to the winding; the carbon brush holder is arranged on the planet carrier shaft, and the carbon brush is fixed on the carbon brush holder, contacts the slip ring and is compressed by a spring to transmit the electric energy generated by the winding.

[0012] The collector ring assembly involved in the present invention comprises a cylindrical collector ring, a carbon brush holder and a carbon brush. The cylindrical collector ring is a hollow cylinder, and the right side of the cylindrical collector ring is fixed on the left end cover of the outer rotor; the carbon brush holder is arranged on the end cover of the stator housing, and the carbon brush is fixed on the carbon brush holder, contacts with the slip ring and is compressed by a spring to transmit the electric energy generated by the winding.

[0013] Compared with the prior art, the dual-rotor internal combustion engine generator designed in the present invention has a reasonable structure and a reliable principle. By utilizing a planetary gear transmission mechanism, the inner and outer rotors rotate in opposite directions, thereby achieving low-speed input and high-power output while occupying a small space, overcoming the problem that the existing dual-rotor generator cannot be applied to a low-speed power source. The present invention is easy to manufacture and install, and has a friendly application environment. Description of the drawings:

[0014] Figure 1 This is a schematic diagram of the structural principle of Example 1 of the present invention.

[0015] Figure 2 This is a partial enlarged view of the planetary gear mechanism involved in the present invention.

[0016] Figure 3 The present invention is a schematic diagram of the structural principle of the planetary carrier shaft and the planetary gear.

[0017] Figure 4 This is a schematic diagram of the structural principle of Example 2 of the present invention.

[0018] Figure 5 This is a schematic diagram of the structural principle of Example 3 of the present invention.

[0019] Figure 6 The figure is a schematic diagram of the structural principle of the double-layer bearing involved in the present invention. Specific implementation method:

[0020] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0021] Embodiment 1:

[0022] The dual-rotor internal combustion engine generator involved in this embodiment has a main structure including a lifting ring 1, a base 2, a stator housing 3, a stator housing end cover 4, a control box 5, an outer rotor housing 6, an outer rotor left end cover 7, an outer rotor right end cover 8, a winding 9, a permanent magnet rotor 10, a rotor shaft 11, a connecting flange 12, a bearing 13, a planetary carrier shaft 14, an inner bearing 15, an outer bearing 16, a slip ring 17, a carbon brush holder 18, a carbon brush 19, a planetary gear 20, a sun gear 21 and a gear end cover 22; the left side of the stator housing 3 is fixedly connected to the stator housing end cover 4 by bolts, and the right side is connected to the internal combustion engine, and the lifting ring 1 is welded and fixedly arranged on the upper surface of the stator housing 3. The stator housing 3 is square and is used for hoisting. The base 2 is arranged below the stator housing 3, and the control box 5 is arranged on the stator housing 3. Inside the stator housing 3, the cylindrical outer rotor housing 6 is fixedly connected to the outer rotor left end cover 7 and the outer rotor right end cover 8, and the winding 9 is arranged inside the winding rotor housing 9. One end of the rotor shaft 11 enters the interior of the outer rotor housing 6 and is rotatably connected to the planetary carrier shaft 14 through the inner bearing 15. The other end of the rotor shaft 11 extends out of the outer rotor right end cover 8 and is fixedly connected to the connecting flange 12. The permanent magnet rotor 10 is fixedly arranged on the rotor shaft 11 inside the outer rotor housing 6, and the position of the permanent magnet rotor 10 is opposite to the winding 9.

[0023] The left side of the planetary carrier shaft 14 is fixed to the inner center of the stator housing end cover 4, and the right side of the planetary carrier shaft 14 is rotatably provided with four planetary gears 20, and the sun gear 21 is fixedly mounted on the rotor shaft 11 and meshes with the four planetary gears 17; an inner gear ring is provided at the central opening of the outer rotor left end cover 7, which meshes with the other side of the planetary gear 17, and at the same time, the outer rotor left end cover 7 is rotatably connected to the planetary carrier shaft 14 through an outer bearing 16, and the outer bearing 16 plays an auxiliary fixing role; the gear end cover 22 is fixedly arranged on the right side of the planetary carrier shaft 14 to prevent oil splashing; the planetary carrier shaft 14 is fixed and does not rotate, and the rotor shaft 11 and the outer rotor left end cover 7 transmit torque through the planetary gear mechanism and rotate in opposite directions, and the speed ratio between the two is fixed.

[0024] The annular slip ring 17 is arranged on the outside of the left end cover 7 of the outer rotor, and the slip ring 17 is electrically connected to the winding 9; the carbon brush holder 18 is arranged on the planetary carrier shaft 14, and the carbon brush 19 is fixed on the carbon brush holder 18, contacts the slip ring 17 and is compressed by a spring to transmit the electrical energy generated by the winding 9.

[0025] When in use, this embodiment forms an internal combustion engine generator set together with the internal combustion engine, and the connecting flange 12 is connected to the power source of the internal combustion engine; the permanent magnet rotor 10, the rotor shaft 11, the connecting flange 12 and the sun gear 21 are the inner rotor system, the internal combustion engine drives the inner rotor system to rotate forward, and the inner rotor system drives the outer rotor system to rotate reversely through the planetary gear mechanism, and the outer rotor system includes an outer rotor housing 6, an outer rotor left end cover 7, an outer rotor right end cover 8 and a winding 9; the relative speed of the permanent magnet rotor 10 and the winding 9 increases, so that the internal combustion engine can obtain higher power generation at a low speed.

[0026] Embodiment 2:

[0027] The dual-rotor internal combustion engine generator involved in this embodiment is an excitation generator, such as Figure 4 The permanent magnet rotor 10 in the first embodiment is replaced by an excitation winding rotor 24, and an excitation system is added; the excitation system includes an outer rotor auxiliary winding 25, an inner rotor auxiliary winding 26 and a rotating rectifier 27; the rotating rectifier 27 is arranged on the rotor shaft 11, the outer rotor auxiliary winding 25 is electrically connected to the outer rotor main winding 23 through a voltage regulator, and the inner rotor auxiliary winding 26 is electrically connected to the excitation winding rotor 24 through the rotating rectifier 27.

[0028] The dual-rotor internal combustion engine generator involved in this embodiment also includes a cylindrical collector ring 28, which is a hollow cylindrical shape and is fixed on the left end cover 7 of the outer rotor on the right side; the carbon brush holder 18 is arranged on the stator housing end cover 4, and the carbon brush 19 is fixed on the carbon brush holder 18, which is in contact with the slip ring 17 and is compressed by a spring to transmit the electric energy generated by the main winding 23 of the outer rotor; compared with Example 1, the linear velocity on the cylindrical collector ring 28 is less than the linear velocity of the slip ring 17 when the rotation speed is the same, and the wear of the carbon brush is reduced. At the same time, the linear velocity at each group of carbon brushes in this embodiment is the same, and the wear of the carbon brush is relatively uniform relative to Example 1.

[0029] One end of the outer rotor right end cover involved in this embodiment is in the shape of an end cover and fixedly connected to the outer rotor housing 6, and the other end is in the shape of a shaft and fixedly connected to the connecting flange 12; the rotor shaft 11 is completely arranged inside the outer rotor housing 6.

[0030] When this embodiment is working, the internal combustion engine drives the outer rotor system to rotate, and the outer rotor system drives the inner rotor system to rotate in the opposite direction through the planetary gear mechanism. The rotation direction of the inner and outer rotor systems is opposite to that of Embodiment 1; the current generated on the outer rotor main winding 23 is transmitted to the outer rotor auxiliary winding 25 through the voltage regulator, and the inner rotor auxiliary winding 26 opposite to the outer rotor auxiliary winding 25 generates an induced current. The induced current is rectified by the rotating rectifier 27 and then directly transmitted to the excitation winding rotor 24, forming a feedback regulation system.

[0031] Embodiment 3:

[0032] The dual-rotor internal combustion engine generator involved in this embodiment is additionally provided with a right end cover 30 of the outer shell and a double-layer bearing 31 compared with the first embodiment. The right end cover 30 of the outer shell is fixedly arranged on the right side of the stator outer shell 3; the double-layer bearing is composed of an outer ring 32, an inner ring 33, a flange sleeve 34, a ball 35, a threaded hole 36 and a stop 37. A group of balls 35 are arranged between the outer ring 32 and the flange sleeve 34, and a group of balls 35 are arranged between the flange sleeve 34 and the inner ring 33, so that the outer ring 32, the inner ring 33 and the flange sleeve 34 can rotate relative to each other; a flange sleeve 34 is arranged on the outside The ring stop 37 is used for positioning during installation; a plurality of threaded holes 36 are evenly arranged on the flange sleeve 34 around the axis; the inner ring 33 of the double-layer bearing 4 is fixedly connected to the rotor shaft 11, the outer side of the outer ring 32 is fixedly connected to the double-layer bearing housing end cover 15, the outer rotor right end cover 8 is fixedly connected to the flange sleeve 34, the stop 37 corresponds to the raised structure on the outer rotor right end cover 8, and is used for positioning to ensure the coaxiality of the double-layer bearing 31 and the outer rotor right end cover 8; the double-layer bearing 31 can enable the rotor shaft 11, the outer rotor right end cover 8 and the housing right end cover 30 to rotate relative to each other.

[0033] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A dual-rotor internal combustion engine generator, characterized in that: The main structure includes a lifting ring, a base, a stator housing, a stator housing end cover, a control box, an outer rotor housing, an outer rotor left end cover, an outer rotor right end cover, a winding, an inner rotor, a rotor shaft, a connecting flange, an inner bearing, an outer bearing, a collector ring assembly and a planetary gear mechanism; the left side of the stator housing is fixedly connected to the stator housing end cover by bolts, and the right side is connected to the internal combustion engine. The lifting ring is welded and fixedly arranged above the stator housing for lifting use, the base is arranged below the stator housing, and the control box is arranged on the stator housing; inside the stator housing, the cylindrical outer rotor housing is fixedly connected to the outer rotor left end cover and the outer rotor right end cover, and the winding is arranged inside the outer rotor housing; the inner rotor is fixedly arranged on the rotor shaft inside the outer rotor housing, and the position of the inner rotor is opposite to the winding; the rotor shaft and the outer rotor left end cover transmit power through a planetary gear mechanism, and the planetary gear mechanism includes a planetary carrier shaft, a planetary gear, a sun gear, an inner gear ring and a gear end cover, the left side of the planetary carrier shaft is fixed to the inner center of the stator housing end cover, and the right side of the planetary carrier shaft is rotatably arranged with four planetary gears, and the sun gear fixing sleeve It is installed on the rotor shaft and meshes with the four planetary gears; the inner gear ring is arranged at the central opening of the left end cover of the outer rotor, and the inner gear ring meshes with the other side of the planetary gear; the gear end cover is fixedly arranged on the right side of the planetary carrier shaft to prevent oil splashing; the left end cover of the outer rotor is rotatably connected to the planetary carrier shaft through an outer bearing; the dual-rotor internal combustion engine generator also includes a right end cover of the outer casing and a double-layer bearing, and the right end cover of the outer casing is fixedly arranged on the right side of the stator casing; the double-layer bearing is composed of an outer ring, an inner ring, a flange sleeve, a sphere, a threaded hole and a stopper, and the outer ring and the flange sleeve are connected A group of spheres are arranged between the flange sleeve and the inner ring, so that the outer ring, the inner ring and the flange sleeve can rotate relative to each other; a circle of stoppers are arranged on the outside of the flange sleeve, and a plurality of threaded holes are evenly arranged on the flange sleeve around the axis; the inner ring of the double-layer bearing is fixedly connected to the rotor shaft, the outer side of the outer ring is fixedly connected to the end cover of the double-layer bearing shell, the right end cover of the outer rotor is fixedly connected to the flange sleeve, and the stoppers correspond to the raised structure on the right end cover of the outer rotor, which is used for positioning to ensure the coaxiality of the double-layer bearing and the right end cover of the outer rotor.

2. The dual-rotor internal combustion engine generator according to claim 1, characterized in that: An opening is provided in the center of the outer rotor right end cover, one end of the rotor shaft enters the interior of the outer rotor housing and is rotatably connected to the planet carrier shaft through an inner bearing, and the other end of the rotor shaft extends out of the outer rotor right end cover and is fixedly connected to the connecting flange.

3. The dual-rotor internal combustion engine generator according to claim 1, characterized in that: One end of the outer rotor right end cover is in the shape of an end cover, and the other end is in the shape of an axis. The end cover-shaped end of the outer rotor right end cover is fixedly connected to the outer rotor housing, and the axis-shaped end is fixedly connected to the connecting flange. The rotor shaft is arranged inside the outer rotor housing and the outer rotor right end cover, and the two ends of the rotor shaft are rotatably connected to the outer rotor right end cover and the outer rotor left end cover respectively through bearings.

4. The dual-rotor internal combustion engine generator according to claim 1, characterized in that: The inner rotor is a permanent magnet rotor.

5. The dual-rotor internal combustion engine generator according to claim 1, characterized in that: The inner rotor is an excitation winding rotor, and the dual-rotor internal combustion engine generator also includes an outer rotor auxiliary winding, an outer rotor main winding, an inner rotor auxiliary winding and a rotating rectifier; the rotating rectifier is arranged on the rotor shaft, the outer rotor auxiliary winding is electrically connected to the outer rotor main winding through a voltage regulator, and the inner rotor auxiliary winding is electrically connected to the excitation winding rotor through the rotating rectifier.

6. The dual-rotor internal combustion engine generator according to any one of claims 1 to 5, characterized in that: The collector ring assembly includes a slip ring, a carbon brush holder and a carbon brush. The annular slip ring is arranged on the outside of the left end cover of the outer rotor, and the slip ring is electrically connected to the winding; the carbon brush holder is arranged on the planet carrier shaft, and the carbon brush is fixed on the carbon brush holder, contacts the slip ring and is compressed by a spring to transmit the electrical energy generated by the winding.

7. The dual-rotor internal combustion engine generator according to any one of claims 1 to 5, characterized in that: The collector ring assembly includes a cylindrical collector ring, a carbon brush holder and a carbon brush. The cylindrical collector ring is a hollow cylinder, and the right side of the cylindrical collector ring is fixed to the left end cover of the outer rotor; the carbon brush holder is arranged on the end cover of the stator housing, and the carbon brush is fixed on the carbon brush holder, contacts the slip ring and is compressed by a spring to transmit the electric energy generated by the winding.

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