Rotating electrical machine

Abstract

To obtain a rotary electric machine having a new configuration in which deformation of a casing can be suppressed.SOLUTION: A rotary electric machine 1 includes a casing 11, a shaft 14, a rotor 12, a stator 13, and a reinforcing member 50. The casing 11 has a bottom wall 11a, two end walls 11c and 11d, and two side walls 11e and 11f. The reinforcing member 50 extends over the two side walls 11e and 11f. A space 51 is provided inside the reinforcing member 50. Storage objects 63 and 66 extending between the two side walls 11e and 11f are put in the space 51.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a rotating electrical machine.

Background Art

[0002] Conventionally, there has been a rotating electrical machine including a rotating electrical machine main body and a cooler that is stacked on the rotating electrical machine main body above the rotating electrical machine main body to cool the rotating electrical machine main body. As this type of rotating electrical machine, one having a shape in which the housing of the rotating electrical machine main body is open upward is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a rotating electrical machine, if the rigidity of the housing is low, the housing deforms due to resonance during startup of the rotating electrical machine or the like, and the vibration of the plate surface becomes large.

[0005] Therefore, one of the problems of the present invention is to obtain a rotating electrical machine with a novel configuration capable of suppressing deformation of the housing.

Means for Solving the Problems

[0006] The rotating electrical machine according to an embodiment of the present invention includes a bottom wall, two end walls extending from the bottom wall in a first direction intersecting the bottom wall and arranged at intervals in a second direction intersecting the first direction, and two side walls extending from the bottom wall in the first direction and arranged at intervals in a third direction intersecting the first direction and the second direction and spanning the two end walls, a housing having the two side walls; a shaft spanning the two end walls, partially accommodated in the housing, and rotatably supported by the two end walls; a rotor accommodated in the housing and rotating integrally with the shaft; a stator accommodated in the housing, fixed to the housing, and surrounding the rotor; and a reinforcing member provided inside and spanning the two side walls with a space for accommodation provided between the two side walls. An object an electrical device fixed to one of the two side walls, a fluid supply unit fixed to the one side wall, and an instrument fixed to the other of the two side walls and comprises , the contained objects include wiring that electrically connects the electrical device and the instrument, and piping through which fluid supplied from the fluid supply unit flows, and the wiring and the piping extend on opposite sides of each other outside the one side wall and also extend on opposite sides of each other outside the other side wall .

Advantages of the Invention

[0007] According to the embodiment of the present invention, a rotating electrical machine with a novel configuration capable of suppressing deformation of the housing can be obtained.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

DETAILED DESCRIPTION OF THE INVENTION

[0009] Exemplary embodiments of the present invention will be disclosed below. The configurations of the embodiments shown below, as well as the operations and effects brought about by these configurations, are examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Further, according to the present invention, it is possible to obtain at least one of various effects obtained by the configuration.

[0010] Also, the drawings are schematic, and the dimensional relationships of the respective elements, the ratios of the respective elements, etc. may be different from the actual ones. Also, there may be portions where the dimensional relationships and ratios of each other are different even between the drawings. Also, in this specification, ordinal numbers are used only for distinguishing parts, members, sites, positions, directions, etc., and do not indicate order or priority.

[0011] (First Embodiment) <Configuration of Totally Enclosed Outer-Sector Rotating Electrical Machine 1> FIG. 1 is an exemplary cross-sectional view of the configuration of the totally enclosed outer-sector rotating electrical machine 1 according to the first embodiment.

[0012] As shown in Fig. 1, the totally enclosed external fan-shaped rotating electrical machine 1 includes a rotating electrical machine main body 2 that performs a rotating operation and a cooler 3. Further, inside the totally enclosed external fan-shaped rotating electrical machine 1, a closed space 4 filled with a cooling gas such as air is provided across the rotating electrical machine main body 2 and the cooler 3. The gas in the closed space 4 heated by the heat generation of the rotating electrical machine main body 2 (hereinafter also referred to as the cooling gas) exchanges heat with the outside air in the cooler 3, thereby cooling the rotating electrical machine main body 2. The totally enclosed external fan-shaped rotating electrical machine 1 is an example of a rotating electrical machine. The cooling gas is an example of a gas.

[0013] <Configuration of Rotating Electrical Machine Main Body 2> The rotating electrical machine main body 2 has a housing 11, a rotor 12, a stator 13, a shaft 14, two bearings 16, and two inner fans 18. If necessary, there may be one inner fan 18.

[0014] In the following description, for convenience, three directions are defined. The X direction is along the longitudinal direction of the housing 11 and the axial direction of the rotation center axis Ax of the rotor 12 and the shaft 14. The Y direction is along the direction orthogonal to the short-side direction of the housing 11 and the axial direction of the rotation center axis Ax. The Z direction is along the vertical direction of the housing 11. The X direction, the Y direction, and the Z direction are orthogonal to each other. Also, the vertical direction of the housing 11 coincides with the vertical direction in the vertical direction. Hereinafter, the vertical direction is the vertical direction of the housing 11, that is, the vertical direction in the vertical direction.

[0015] Further, the rotation center axis Ax is the center of rotation of the shaft 14 and is, for example, an imaginary line passing through the centers of the rotor 12 and the shaft 14. That is, the axial direction, the radial direction, and the circumferential direction of the rotation center axis Ax are the same as the axial direction, the radial direction, and the circumferential direction of the shaft 14. In the following description, unless otherwise specified, the axial direction, the radial direction, and the circumferential direction are the axial direction, the radial direction, and the circumferential direction of the rotation center axis Ax, that is, the axial direction, the radial direction, and the circumferential direction of the shaft 14.

[0016] Fig. 2 is an exemplary plan view of the rotating electrical machine main body 2 in the totally enclosed external fan-shaped rotating electrical machine 1 of the first embodiment.

[0017] As shown in FIGS. 1 and 2, the housing 11 is formed in a box shape. The housing 11 houses the rotor 12, the stator 13, and a part of the shaft 14. Specifically, in the housing 11, a space 4a that houses the rotor 12, the stator 13, and a part of the shaft 14 is provided. The space 4a constitutes the closed space 4.

[0018] The housing 11 has a plurality of walls such as a bottom wall 11a, two end walls 11c and 11d, and two side walls 11e and 11f.

[0019] The bottom wall 11a extends along a direction orthogonal to the Z direction (X - Y plane). The bottom wall 11a constitutes the lower end portion of the housing 11.

[0020] Both the end wall 11c and the end wall 11d extend along a direction orthogonal to the axial direction, that is, the X direction (Y - Z plane), and are provided parallel to each other with a space therebetween in the X direction. The end wall 11c extends in the Z direction from the end portion of the bottom wall 11a in the direction opposite to the X direction, and the end wall 11d extends in the Z direction from the end portion of the bottom wall 11a in the X direction. Bearings 16 are provided on each of the end wall 11c and the end wall 11d.

[0021] Both the side wall 11e and the side wall 11f extend along a direction orthogonal to the axial direction and also orthogonal to the Y direction (X - Z plane), and are provided parallel to each other with a space therebetween in the Y direction. The side wall 11e extends in the Z direction between the end portions of the bottom wall 11a in the Y direction, and the side wall 11f extends in the Z direction from the end portion of the bottom wall 11a in the direction opposite to the Y direction.

[0022] Further, the housing 11 is composed of a combination of a plurality of members. For example, the housing 11 has a frame 21 and two bearing brackets 22. The frame 21 includes the bottom wall 11a and the side walls 11e and 11f. One bearing bracket 22 includes the end wall 11c. The other bearing bracket 22 includes the end wall 11d. The frame 21 and the two bearing brackets 22 are fixed to each other.

[0023] In addition, a reinforcing member 50 is provided on the housing 11. The reinforcing member 50 extends across the two side walls 11e and 11f and is fixed to the two side walls 11e and 11f. The reinforcing member 50 is disposed between the two end walls 11c and 11d. For example, the reinforcing member 50 is disposed at a substantially central portion between the two end walls 11c and 11d. A space 51 is provided inside the reinforcing member 50. Wiring 63 and piping 66 (accommodated objects) extending between the two side walls 11e and 11f enter the space 51. The wiring 63 and the piping 66 are an example of accommodated objects.

[0024] FIG. 3 is an exemplary cross-sectional view of a portion including the reinforcing member 50 in the fully enclosed outer sector rotating electric machine 1 of the first embodiment.

[0025] As shown in FIG. 3, the reinforcing member 50 has a bottom wall 50a and two standing walls 50c and 50d. The bottom wall 50a extends along a direction orthogonal to the Z direction (X - Y plane).

[0026] Both the standing wall 50c and the standing wall 50d extend along a direction orthogonal to the axial direction, that is, the X direction (Y - Z plane), and are provided parallel to each other with a space therebetween in the X direction. The standing wall 50c extends in the Z direction from an end portion of the bottom wall 50a in the direction opposite to the X direction, and the standing wall 50d extends in the Z direction from an end portion of the bottom wall 50a in the X direction.

[0027] The space 51 is formed by the bottom wall 50a and the standing walls 50c and 50d. That is, the space 51 is open in the Z direction. Also, two openings 51a in the Y direction and the direction opposite to the Y direction of the space 51 face the inner surfaces of the side walls 11e and 11f, respectively. The opening 51a is also referred to as an opening end portion.

[0028] In addition, flanges 52 are provided at two end portions of the reinforcing member 50 in the Y direction and the direction opposite to the Y direction.

[0029] FIG. 4 is an exemplary cross-sectional view of the mounting structure of the reinforcing member 50 in the fully enclosed outer sector rotating electric machine 1 of the first embodiment.

[0030] Referring to FIG. 4, the fixing structure of the reinforcing member 50 to the side wall 11e will be described. Note that the fixing structure of the reinforcing member 50 to the side wall 11e is the same as the structure shown in FIG. 4. The flange 52 is fixed to the side wall 11e by a plurality of bolts 53 in a state of being overlapped with the inner surface of the side wall 11e, whereby the reinforcing member 50 is fixed to the side wall 11e. The side wall 11e is provided with a bottomed hole 11g, and a female screw portion 11h that engages with the bolt 53 is provided in the hole 11g.

[0031] Also, as shown in FIG. 4, the side wall 11e is provided with a hole 11i that penetrates the side wall 11e. The wiring 63 and the wiring 63 penetrate the hole 11i. Specifically, a seal member 68 is fitted in the hole 11i, and the wiring 63 and the wiring 63 are fitted in a hole 68a provided in the seal member 68.

[0032] As shown in FIG. 1, the stator 13 has a stator core 19 and a stator winding 20. The stator core 19 is formed in a substantially cylindrical shape surrounding the rotation center axis Ax. The stator winding 20 passes through slots provided in the stator core 19 and is fixed to the stator core 19. The stator 13 is fixed to the bottom wall 11a of the housing 11 via a bracket 23. The stator 13 is separated from the end walls 11c, 11d and the side walls 11e, 11f.

[0033] The rotor 12 has a rotor core 15. The rotor core 15 is formed in a substantially cylindrical shape surrounding the rotation center axis Ax and is disposed inside the stator core 19.

[0034] The shaft 14 is formed in a substantially cylindrical shape extending along the rotation center axis Ax. The shaft 14 passes through the end walls 11c, 11d and extends across the inside and outside of the housing 11. The shaft 14 is supported by a bearing 16 so as to be rotatable about the rotation center axis Ax. That is, the shaft 14 is supported by the end walls 11c, 11d via the bearing 16 so as to be rotatable about the rotation center axis Ax.

[0035] The shaft 14 extends axially through the inside of the stator 13 and the rotor 12. The shaft 14 is coupled to the rotor core 15 of the rotor 12. The rotor 12 and the shaft 14 can rotate integrally about the rotation center axis Ax with respect to the stator 13.

[0036] Both axial ends of the shaft 14 protrude from the housing 11 to the outside of the housing 11. A coupling portion 14b is provided at one axial end of the shaft 14. The coupling portion 14b is coupled to a coupling target (not shown). Also, an outer fan 17 is fixed to the other axial end of the shaft 14. The outer fan 17 rotates integrally with the shaft 14. In addition, an inner fan 18 is fixed between each of the two bearings 16 and the rotor core 15 on the shaft 14. The inner fan 18 rotates integrally with the shaft 14.

[0037] The two bearings 16 are located on one axial side and the other axial side with respect to the rotor 12. That is, the rotor 12 is located between the two bearings 16. The bearing 16 is, for example, a sliding bearing or a rolling bearing.

[0038] Also, as shown in FIG. 2, the fully-closed outer-rotor type rotating electrical machine 1 further includes a terminal box 61, a sensor 62, and a fluid supply unit 65. The terminal box 61 is fixed to the outer surface of the side wall 11f. The sensor 62 penetrates the side wall 11e and is fixed to the side wall 11e. The sensor 62 is, for example, a temperature sensor that measures the temperature inside the housing 11. Note that the sensor 62 is not limited to this. For example, the sensor 62 may be one that detects the rotation speed or rotational speed of the shaft 14. The connector in the terminal box 61 and the sensor 62 are electrically connected by a wiring 63. The terminal box 61 is an example of an electrical device, and the sensor 62 is an example of an instrument.

[0039] The fluid supply unit 65 is fixed to the outer surface of the side wall 11f. The fluid supply unit 65 supplies fluid to the pipe 66. The pipe 66 is, for example, a flexible tube. The fluid is, for example, a non-combustible purge gas (gas). The purge gas is, for example, nitrogen or clean air. The pipe 66 penetrates through the side wall 11f and the side wall 11e and extends along the outer surface of the side wall 11e. One end of the pipe 66 communicates with the inside of the housing 11.

[0040] The purge gas supplied from the fluid supply unit 65 to the pipe 66 flows through the pipe 66. That is, the fluid flows from the side wall 11f to the side wall 11e. Then, the purge gas flows into the housing 11 from one end of the pipe 66. When the purge gas flows into the housing 11, the gas in the closed space 4 is discharged from the discharge pipe (not shown) to the outside of the housing 11. Thereby, the gas in the closed space 4 is replaced with the non-combustible purge gas.

[0041] <Configuration of the cooler 3> As shown in FIG. 1, the cooler 3 includes a heat exchanger 31, an outer fan cover 32, and an outlet guide 33. The cooler 3 cools the inside of the housing 11.

[0042] The heat exchanger 31 is disposed above the housing 11 and mounted on the housing 11. The heat exchanger 31 includes a housing 40 and a plurality of cooling pipes 41.

[0043] The housing 40 is , a box formed in a mold. The housing 40 It has an inlet end plate 42, an outlet end plate 43, a cooler cover 45, and a bottom plate 46. A space 4b is provided inside the housing 40. The space 4b constitutes the closed space 4.

[0044] The bottom plate 46 extends along a direction orthogonal to the Z direction (X-Y plane). The bottom plate 46 is located on the Z-direction side (upper side) with respect to the housing 11 of the rotating electrical machine body 2 and covers the inside of the housing 11, that is, the space 4a. The bottom plate 46 is provided with, for example, two ventilation openings 46a and, for example, two ventilation openings 46b. The ventilation opening 46a is provided at a substantially central portion in the X direction of the bottom plate 46 and is located on the upper side with respect to the stator 13. The two ventilation openings 46a are provided at intervals in the X direction. The two ventilation openings 46b are provided at intervals in the X direction. The two ventilation openings 46b are located in a portion diagonally above the inner fan 18 in the housing 11. The ventilation opening 46a is located between the two ventilation openings 46b. Each of the ventilation openings 46a and 46b communicates with the inside of the housing 40, that is, the space 4b, and the inside of the housing 11, that is, the space 4a, and connects the space 4b and the space 4a. The bottom plate 46 is an example of a covering wall. The number of the ventilation openings 46a and the ventilation openings 46b is not limited to two, and may be one, or three or more.

[0045] The bottom plate 46 has a region 46c and two regions 46d. The region 46c is a portion between the two ventilation openings 46a of the bottom plate 46. As shown in FIG. 3, the region 46c is located on the Z-direction side with respect to the space 51 and covers the space 51. The region 46d is an example of a lid portion. The region 46d is a portion between the ventilation opening 46a and the ventilation opening 46b of the bottom plate 46.

[0046] Both the inlet end plate 42 and the outlet end plate 43 extend along a direction orthogonal to the axial direction, that is, the X direction (Y-Z plane), and are provided parallel to each other at intervals in the X direction. The inlet end plate 42 extends in the Z direction from an end portion of the bottom plate 46 in the direction opposite to the X direction, and the outlet end plate 43 extends in the Z direction from an end portion of the bottom wall 11a in the X direction.

[0047] The cooler cover 45 is provided across the bottom plate 46, the inlet end plate 42, and the outlet end plate 43.

[0048] The plurality of cooling pipes 41 are arranged in parallel with each other. The plurality of cooling pipes 41 are provided across an inlet end plate 42 and an outlet end plate 43, and both ends of the cooling pipes 41 are supported by the inlet end plate 42 and the outlet end plate 43.

[0049] Also, two guide plates 44 are provided in the cooler cover 45. The two guide plates 44 are arranged at intervals in the X direction between the inlet end plate 42 and the outlet end plate 43. The two guide plates 44 extend upward from the bottom of the space 4b so as to exclude the upper communication space 4c in the space 4b of the housing 40, and partition the space in the cooler cover 45 excluding the upper communication space 4c in the X direction.

[0050] The outer fan cover 32 is fixed to the inlet end plate 42 and houses the outer fan 17. The outer fan cover 32 is provided with a suction port 37, and when the outer fan 17 rotates, outside air flows into the outer fan cover 32 from the suction port 37. Also, the outer fan cover 32 is connected to the inlet end plate 42 so that the outside air that has flowed into the outer fan cover 32 by the outer fan 17 flows inside the plurality of cooling pipes 41. Further, a guide member 49 is provided in the outer fan cover 32 to guide the outside air that has flowed into the outer fan cover 32 from the suction port 37 to pass through the outer fan 17 and flow to the plurality of cooling pipes 41.

[0051] The outlet guide 33 is fixed to the outlet end plate 43. The outlet guide 33 guides the outside air flowing out from the plurality of cooling pipes 41 to flow in a predetermined direction.

[0052] <Gas flow of the totally enclosed outer fan-shaped rotating electric machine 1> Next, the gas flow of the totally enclosed outer fan-shaped rotating electric machine 1 having the above configuration will be described.

[0053] First, the cooling gas in the closed space 4 will be described. The cooling gas in the space 4a inside the housing 11 in the closed space 4 shown in FIG. 1 is sent to the rotor 12 and the stator 13 by two inner fans 18 that rotate integrally with the shaft 14. The cooling gas flows along the rotor 12 and the stator 13 to cool the rotor 12 and the stator 13, and then flows out to the outside in the radial direction of the stator core 19. At this time, the gas passes through the ventilation paths provided in the rotor 12 and the stator 13 respectively. The gas that has flowed out to the outside in the radial direction of the stator core 19 flows into the space 4b in the cooler 3 via the ventilation port 46a. The gas that has flowed into the space 4b of the cooler 3 passes outside the cooling pipe 41, exchanges heat with the outside air flowing in the cooling pipe 41, is cooled, rises between the two guide plates 44, and flows out to the upper communication space 4c.

[0054] The cooling gas in the upper communication space 4c is divided into two in the axial direction of the cooling pipe 41 in opposite directions, and cools while exchanging heat with the outside air in the cooling pipe 41 between the inlet end plate 42 and the guide plate 44 and between the outlet end plate 43 and the guide plate 44 respectively, and then descends. After that, the cooling gas returns to the space 4a in the housing 11 via the ventilation port 46b and flows into the inner fans 18 again.

[0055] Next, the outside air will be described. The outside air flows into the outer fan cover 32 from the suction port 37 by the outer fan 17 that rotates integrally with the shaft 14, passes through the outer fan cover 32, and reaches the inlet end plate 42. The outside air that has reached the inlet end plate 42 flows into each cooling pipe 41 that is open at the inlet end plate 42, passes through the cooling pipe 41 while receiving heat from the cooling gas outside the cooling pipe 41 and rising in temperature, and then flows out of the cooler 3 from the opening at the outlet end plate 43. In this way, heat exchange is performed between the outside air inside the cooling pipe 41 and the cooling gas outside the cooling pipe 41, thereby cooling the rotor 12 and the stator 13.

[0056] <Assembly and disassembly method of the fully enclosed outer-sector rotating electric machine 1> In the assembly of the totally enclosed external fan type rotating electric machine 1, the stator core 19 and the stator 13 are inserted into the frame 21 from above the frame 21 in the housing 11 and attached to the frame 21. Next, the shaft 14 to which the rotor core 15 (rotor 12) has been attached in advance is inserted into the frame 21 through the bearing holes in the end wall 11c or the end wall 11d, and the shaft 14 is attached to the end walls 11c and 11d via the bearings 16. Thereby, the shaft 14 is supported by the end walls 11c and 11d via the bearings 16. Thereafter, the reinforcing member 50 is attached to the frame 21, and the wiring 63 and the piping 66 are laid in the space 51. Thereafter, the bottom plate 46 of the cooler 3 is attached to the housing 11, and the heat exchanger 31 of the cooler 3 is fixed by overlapping it from above on the bottom plate 46. Alternatively, the heat exchanger 31 integrated with the bottom plate 46 is fixed by overlapping it from above on the rotating electric machine main body 2. The fixing is performed, for example, by bolts or the like. Thereafter, the outer fan cover 32 and the outlet guide 33 are fixed to the heat exchanger 31 by bolts or the like. Thereby, the space 51 of the reinforcing member 50 is covered and closed by the region 46c of the bottom plate 46.

[0057] On the other hand, in the disassembly of the totally enclosed external fan type rotating electric machine 1, the outer fan cover 32 and the outlet guide 33 are removed from the heat exchanger 31, and thereafter, the heat exchanger 31 is removed from the rotating electric machine main body 2. Thereby, the space 51 of the reinforcing member 50 is opened upward. Thereafter, the totally enclosed external fan type rotating electric machine 1 can be disassembled by removing each member described in the assembly in the reverse procedure of the assembly.

[0058] <Effects of the Embodiment> As described above, the fully enclosed outer sector rotating electrical machine 1 (rotating electrical machine) of the present embodiment includes a housing 11, a shaft 14, a rotor 12, a stator 13, and a reinforcing member 50. The housing 11 has a bottom wall 11a, two end walls 11c, 11d, and two side walls 11e, 11f. The two end walls 11c, 11d extend from the bottom wall 11a in the Z direction (first direction) that intersects (orthogonal as an example) the bottom wall 11a, and are arranged at intervals in the X direction (second direction) that intersects the Z direction. The two side walls 11e, 11f extend from the bottom wall 11a in the Z direction, are arranged at intervals in the Y direction (third direction) that intersects the Z direction and the X direction, and span the two end walls 11c, 11d. The shaft 14 spans the two end walls 11c, 11d, a part of which is housed in the housing 11 and is rotatably supported by the two end walls 11c, 11d. The rotor 12 is housed in the housing 11 and rotates integrally with the shaft 14. The stator 13 is housed in the housing 11, fixed to the bottom wall 11a of the housing 11, and surrounds the rotor 12. The reinforcing member 50 spans the two side walls 11e, 11f. A space 51 is provided inside the reinforcing member 50. Wiring 63 and piping 66 (accommodated objects) that span between the two side walls 11e, 11f enter the space 51.

[0059] According to such a configuration, since the housing 11 is reinforced by the reinforcing member 50, the rigidity of the housing 11 can be improved. Therefore, according to the present embodiment, deformation and vibration of the side surface of the housing 11 due to resonance during startup of the fully enclosed outer sector rotating electrical machine 1 can be suppressed. Specifically, the reinforcing member 50 can suppress deformation and vibration amplitude of the housing 11 where the interval between the side walls 11e, 11f increases. In addition, since the space 51 into which objects enter is provided inside the reinforcing member 50 and the reinforcing member 50 also serves as a container, the configuration of the fully enclosed outer sector rotating electrical machine 1 can be simplified compared to a configuration in which they are provided separately.

[0060] In addition, the totally enclosed externally ventilated rotating electric machine 1 includes a heat exchanger 31 (cooling unit). The heat exchanger 31 has a bottom plate 46 (covering wall) that is located on the Z-direction side with respect to the housing 11 and covers the inside of the housing 11, and cools the inside of the housing 11. The space 51 is open in the Z direction. The bottom plate 46 (covering wall) has a region 46c (covering portion) that is located on the Z-direction side with respect to the space 51 and covers the space 51.

[0061] According to such a configuration, by removing the heat exchanger 31 from the housing 11, the space 51 of the reinforcing member 50 is opened upward, so that maintenance inside the reinforcing member 50 is easy. Furthermore, since the reinforcing member 50 is also removable, it is possible to replace or maintain the stator 13.

[0062] In addition, the reinforcing member 50 is disposed at a substantially central portion between the two end walls 11c and 11d.

[0063] According to such a configuration, it is possible to further suppress an increase in the distance between the side walls 11e and 11f.

[0064] In addition, the contained object is at least one (both in one example) of the wiring 63 and the piping 66.

[0065] According to such a configuration, the wiring 63 and the piping 66 extending between the side walls 11e and 11f can be protected by the reinforcing member 50. Note that the contained object may be only the wiring 63, or it may be only the piping 66.

[0066] (Second Embodiment) FIG. 5 is an exemplary perspective view of the rotating electric machine main body in the totally enclosed externally ventilated rotating electric machine 1 of the second embodiment.

[0067] As shown in FIG. 5, in this embodiment, the reinforcing member 50 is different from that in the first embodiment. The reinforcing member 50 in this embodiment has a base portion 51e and protruding portions 51g and 51f. The base portion 51e extends between the two side walls 11e and 11f above the two side walls 11e and 11f. The protruding portions 51g and 51f protrude in the opposite direction of the Z direction along the outer surfaces of the side walls 11e and 11f from both end portions of the base portion 51e. Further, similar to the first embodiment, a space 51 is provided inside the reinforcing member 50, and wiring 63 and piping 66 can be provided in the space 51.

[0068] (Third Embodiment) FIG. 6 is an exemplary plan view of the rotating electrical machine body in the totally enclosed outer sector rotating electrical machine 1 of the third embodiment. FIG. 7 is an exemplary side view of the rotating electrical machine body in the totally enclosed outer sector rotating electrical machine 1 of the third embodiment. FIG. 8 is an exemplary rear view of the rotating electrical machine body in the totally enclosed outer sector rotating electrical machine 1 of the third embodiment.

[0069] As shown in FIGS. 6 to 8, in this embodiment, the reinforcing member 50 is different from that in the first embodiment. The reinforcing member 50 in this embodiment has two inclined portions 51h and 51i. The inclined portion 51h extends between the inclined portion 51h and the end wall 11d, and the inclined portion 51i extends between the side wall 11f and the end wall 11d. The inclined portions 51h and 51i are inclined with respect to the X direction and approach each other as they go in the X direction. The inclined portions 51h and 51i are connected to each other at the end wall 11d. Further, similar to the first embodiment, a space 51 is provided inside the reinforcing member 50, and wiring 63 and piping 66 can be provided in the space 51.

[0070] According to such a configuration, it is possible to suppress the distance between the reinforcing member 50 and the upper end portion (top portion) of the stator core 19 of the stator 13 from becoming narrow.

[0071] (Fourth Embodiment) FIG. 9 is an exemplary cross-sectional view of the configuration of the totally enclosed outer sector rotating electrical machine 1 of the fourth embodiment.

[0072] This embodiment is different from the first embodiment in that a plurality (three in one example) of reinforcing members 50 are provided. The plurality of reinforcing members 50 are arranged in parallel with each other at intervals in the X direction. Each reinforcing member 50 extends across the two side walls 11e and 11f.

[0073] According to such a configuration, since a plurality of reinforcing members 50 are provided, deformation of the housing 11 can be further suppressed.

[0074] (Fifth Embodiment) FIG. 10 is an exemplary cross-sectional view of the configuration of the fully enclosed outer sector rotating electric machine 1 according to the fifth embodiment.

[0075] This embodiment is different from the first embodiment in terms of the reinforcing member 50. The reinforcing member 50 in this embodiment is a pipe. The pipe is, for example, a metal pipe. Similar to the pipe 66 in the first embodiment, purge gas passes through the inside of the reinforcing member 50. Therefore, the reinforcing member 50 can also be referred to as a duct. The purge gas is an example of a fluid flowing between the two side walls 11e and 11f. Note that the fluid may be a liquid.

[0076] According to such a configuration, since the reinforcing member 50 is a pipe, the configuration of the fully enclosed outer sector rotating electric machine 1 can be simplified compared to a configuration in which the reinforcing member 50 and the pipe are provided separately.

[0077] In addition, in the first to fourth embodiments, the pipe 66 in the space 51 may be removed, and the purge gas may be directly flowed through the space 51. In that case, pipes such as flexible tubes are laid and fixed so as to connect the space from the fluid supply unit 65 to the space 51 of the reinforcing member 50 and the necessary parts of the purge gas inside the housing 11 and the space 51 of the reinforcing member 50, respectively.

[0078] Also, in each of the above embodiments, an example of the heat exchanger 31 is shown as an example of the cooling unit, but it is not limited thereto. For example, the cooling unit may be an air duct capable of cooling by ventilating the inside of the housing 11.

[0079] In addition, in each of the above-described embodiments, an example in which the flange 52 is provided on the inner surface of the housing 11 is shown, but the present invention is not limited thereto. For example, the flange 52 may be provided on the outer surface of the housing 11.

[0080] Although some embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope.

Description of Reference Numerals

[0081] 1... fully closed outer sector rotating electrical machine (rotating electrical machine), 11... housing, 11a... bottom wall, 11c, 11d... end walls, 11e, 11f... side walls, 12... rotor, 13... stator, 14... shaft, 31... heat exchanger (cooling unit), 46... bottom plate (covering wall), 46c... region (lid portion), 50... reinforcing member, 51... space, 61... terminal box (electrical device), 62... sensor (instrument) 63... wiring (accommodation), 65... fluid supply unit 66... pipe (accommodation).

Claims

1. A housing having a bottom wall, two end walls extending from the bottom wall in a first direction intersecting the bottom wall and spaced apart in a second direction intersecting the first direction, and two side walls extending from the bottom wall in the first direction and spaced apart in a third direction intersecting the first and second directions and spanning the two end walls; A shaft spanning the two end walls, partially housed in the housing, and rotatably supported by the two end walls; A rotor housed in the housing and rotating integrally with the shaft; A stator housed in the housing, fixed to the housing, and surrounding the rotor; A reinforcing member spanning the two side walls and having an internal space for accommodating contents spanning between the two side walls; An electrical device fixed to one of the two side walls; A fluid supply part fixed to the one side wall; An instrument fixed to the other of the two side walls; Comprising: The contents are: Wiring electrically connecting the electrical device and the instrument; A pipe through which fluid supplied from the fluid supply part flows; Including: The wiring and the pipe extend on opposite sides of each other outside the one side wall and also extend on opposite sides of each other outside the other side wall; A rotating electrical machine.

2. Having a covering wall located on the first direction side with respect to the housing and covering the interior of the housing, and comprising a cooling part for cooling the inside of the housing; The space opens in the first direction; The covering wall has a lid part located on the first direction side with respect to the space and covering the space; The rotating electrical machine according to Claim 1.

3. The reinforcing member is arranged at a central part between the two end walls; The rotating electrical machine according to Claim 1.

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