JP2017189085A - Rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating electric machine including a coolant injected therein, capable of reducing the loss that is caused, during rotation of a rotor, by the shearing force of the coolant that has flowed into a gap between an inner peripheral surface of a stator and an outer peripheral surface of the rotor, and also capable of increasing the efficiency of a cooling effect due to the agitation of the coolant.SOLUTION: A motor generator 1A includes flow direction regulating members 15A and 16A which are provided to axially face axial end faces of a rotor 11 with a gap formed therebetween. Thus, on the rear side and the front side of the rotor 11, a coolant 14 entering a gap portion 150c is discharged by a centrifugal force radially outward. Consequently, negative pressure is created by the Venturi effect, causing the coolant 14, which has flowed into a gap between the inner peripheral surface of a stator 12 and the outer peripheral surface of the rotor 11, to be discharged to an outer peripheral side. Therefore, it is possible to reduce the loss caused, during rotation of the rotor 11, by the shearing force of the coolant 14.SELECTED DRAWING: Figure 1(a)

Description

  The present invention relates to a rotating electrical machine including a rotor, a stator, a housing, and a liquid refrigerant injected into a space covered by the housing.

  Conventionally, as a rotating electrical machine including a rotor, a stator, a housing, and a liquid refrigerant injected into a space covered by the housing, for example, there is an electric unit disclosed in Patent Document 1 shown below. .

  This electric unit includes a rotor, a stator, a case, and lubricating oil. Here, the rotor, the stator, the case, and the lubricating oil correspond to the rotor, the stator, the housing, and the refrigerant.

  The rotor has an oil sump portion on the inside. The stator is disposed such that its inner peripheral surface is opposed to the outer peripheral surface of the rotor in the radial direction with a gap. The case accommodates the rotor and the stator and supports the rotor in a rotatable manner. Lubricating oil is injected into the space covered by the case. Lubricating oil flows between the outer peripheral surface of the rotor below the electric unit and the inner peripheral surface of the stator when the electric unit is arranged so that the axial direction of the rotor is horizontal and the rotor is stationary.

  When the rotor rotates, the lubricating oil is held throughout the oil reservoir by centrifugal force. Therefore, the oil level of the lubricating oil is lowered. Therefore, stirring loss when the rotor rotates and stirs the lubricating oil can be suppressed.

JP 2009-261137 A

  In the electric unit described above, the oil level of the lubricating oil in the case decreases when the rotor rotates. However, even if the oil level of the lubricating oil decreases, the lubricating oil still flows between the outer peripheral surface of the lower rotor of the electric unit and the inner peripheral surface of the stator. For this reason, it is impossible to reduce the loss caused by the shearing force of the lubricating oil flowing between the outer peripheral surface of the rotor and the outer peripheral surface of the stator, which occurs when the rotor rotates. In addition, during the rotation of the rotor, the lubricating oil adhering to the side surface of the rotor in the oil reservoir is released to the outer peripheral side with the rotation of the rotor. At that time, a certain proportion of the lubricating oil does not reach the coil end to be cooled, but directly reaches the housing. Therefore, the efficiency of the cooling effect (work) by the lubricating oil for the work of scooping up the lubricating oil is reduced.

  The present invention has been made in view of such circumstances. In a rotating electrical machine in which a refrigerant is injected, the present invention flows between the outer peripheral surface of the rotor and the inner peripheral surface of the stator, which occurs when the rotor rotates. It is an object of the present invention to provide a rotating electrical machine that can reduce the loss due to the shearing force of the refrigerant and that can improve the efficiency of the cooling effect by scooping up the refrigerant.

  The invention according to claim 1, which has been made to achieve the above object, includes a rotating shaft, a rotor fixed to the rotating shaft, and an inner peripheral surface thereof spaced apart from an outer peripheral surface of the rotor in a radial direction. A stator arranged so as to be opposed, a housing that covers both axial end faces of the stator and rotatably supports the rotating shaft, and is injected into a space covered by the housing and fixed to the outer peripheral surface of the rotor The liquid refrigerant flowing into at least a part of the inner peripheral surface of the rotor and the axial end face of the rotor are provided so as to face each other in the axial direction with a space therebetween, and between the axial end face of the rotor A flow direction regulating member that regulates the flow direction of the refrigerant by the formed gap.

  According to this configuration, when the rotor rotates, a flow is generated in the refrigerant by centrifugal force. The rotating electrical machine has a flow direction regulating member provided so as to face the axial end surface of the rotor with an interval therebetween. Therefore, a refrigerant | coolant accumulates in the clearance gap formed between the axial direction end surface of a rotor, and a flow direction control member, and is discharged | emitted by radial direction with the centrifugal force of a rotor. As a result, a negative pressure is generated by the venturi effect, and the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator is discharged. Thereby, the loss accompanying the shear force of the refrigerant | coolant currently flowing between the outer peripheral surface of a rotor and the inner peripheral surface of a stator which generate | occur | produces at the time of rotation of a rotor can be reduced. In addition, since the refrigerant scraped up by the rotor does not come into contact with the refrigerant pool, loss due to the shearing force of the refrigerant on the rotor side surface can be reduced. Furthermore, the cooling capacity of the coil end portion can be improved by the refrigerant discharged from between the outer peripheral surface of the rotor and the inner peripheral surface of the stator. In addition, since the amount of the refrigerant in the gap is limited as the rotor rotates, the refrigerant agitation loss associated with the rotation of the rotor can be suppressed. Needless to say, it is possible to further reduce the stirring loss by mixing a gas such as air with the refrigerant to form a foam at a low rotation with a small Venturi effect.

  Invention of Claim 2 is provided in the stator core, the stator core arrange | positioned so that the inner peripheral surface may oppose to the radial direction at intervals with the outer peripheral surface of a rotor, A stator coil provided with a U-shaped coil end portion protruding in the axial direction from the axial end face of the stator core, and the opening of the gap portion faces the coil end portion in the radial direction. According to this structure, the refrigerant | coolant which flows through a clearance gap part can be guide | induced to a coil end part. Therefore, the inner peripheral side of the coil end portion can be reliably cooled. Therefore, the cooling capacity of the coil end portion can be improved.

  In the invention according to claim 3, the opening of the gap is opposed to the space formed by the axial end surface of the rotor and the coil end in the radial direction. According to this configuration, the refrigerant flowing through the gap can be guided to the space formed by the axial end surface of the rotor and the coil end. That is, the refrigerant can be guided to the inside of the coil end portion. Therefore, the inside of the coil end portion can be reliably cooled. Therefore, the cooling capacity of the coil end portion can be improved.

  In the invention according to claim 4, the flow direction regulating member has a convex portion and a concave portion on the surface on the rotor side. According to this configuration, the flow direction regulating member has the recess on the surface on the rotor side. The gap between the axial end face of the rotor and the recess is wide, and more refrigerant can be held. Therefore, more refrigerant can be supplied to the coil end portion. Thereby, the cooling performance of a coil end part can be improved. However, if the distance from the axial end surface of the rotor is increased, the flow rate of the refrigerant is decreased and the negative pressure is reduced. Therefore, the discharge capability of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator is reduced. However, the flow direction regulating member has a convex portion on the surface on the rotor side. The gap between the axial end face and the convex portion of the rotor is narrow, the flow rate of the refrigerant increases, and the negative pressure increases. Therefore, it is possible to compensate for the refrigerant discharge capacity that has been lowered due to the influence of the recess. That is, the cooling performance of the coil end portion can be improved while ensuring the refrigerant discharge capacity.

  In the invention according to claim 5, the convex portion extends in the circumferential direction. According to this structure, a refrigerant | coolant can be hold | maintained at the inner peripheral side of a convex part. Therefore, the cooling capacity of the rotor can be improved.

  In the invention described in claim 6, the convex portion extends in an arc shape in the circumferential direction. According to this structure, the refrigerant | coolant which flows along the internal peripheral surface of a convex part can be induced | guided | derived from a circumferential direction edge part to a coil end part. Therefore, the refrigerant | coolant capability of a coil end part can be improved.

  In the invention according to claim 7, the convex portion extends annularly in the circumferential direction. According to this structure, a refrigerant | coolant can be hold | maintained over the perimeter to the inner peripheral side of a convex part. Therefore, the cooling capacity of the rotor can be further improved.

  According to an eighth aspect of the present invention, the flow direction regulating member has a through-hole portion that penetrates in the axial direction. According to this configuration, the refrigerant can be supplied to the gap portion from the counter-rotor side of the flow direction regulating member via the through hole portion. Therefore, a sufficient amount of refrigerant can be continuously guided to the coil end portion. Therefore, the cooling performance of the coil end portion can be improved. Further, the rotor can be reliably cooled by a sufficient amount of refrigerant.

  In a ninth aspect of the present invention, the flow direction regulating member has a coil end facing portion that is opposed to the tip end portion of the coil end portion in the axial direction with a space therebetween. According to this configuration, the refrigerant can flow along the coil end facing portion. Therefore, the refrigerant can be guided to the outer peripheral side of the coil end portion. Therefore, the outer peripheral side of the coil end portion can be reliably cooled. Therefore, the cooling capacity of the coil end portion can be improved.

  In the invention according to claim 10, the flow direction regulating member is provided to be movable in the axial direction. According to this structure, the magnitude | size of a clearance gap part can be adjusted by moving a flow direction control member to an axial direction. Therefore, the flow rate of the refrigerant in the gap can be adjusted. As a result, the negative pressure generated by the venturi effect can be adjusted, and the discharge capacity of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be adjusted.

  The invention described in claim 11 has a pressing member that presses the flow direction regulating member toward the non-rotor side. When the rotation speed of the rotor increases, the flow rate of the refrigerant in the gap portion increases. Therefore, the negative pressure generated by the venturi effect increases. As a result, the flow direction regulating member moves toward the rotor due to the negative pressure. However, according to this configuration, the flow direction regulating member is pressed to the counter-rotor side by the pressing member. Therefore, the flow direction regulating member gradually moves to the rotor side as the number of rotations of the rotor increases. Therefore, the discharge capacity of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be gradually increased as the rotational speed of the rotor increases.

  In the invention according to claim 12, the pressing member is a spring or a rubber member. According to this configuration, the flow direction regulating member can be reliably pressed to the counter-rotor side.

  The invention described in claim 13 has an actuator for moving the flow direction regulating member in the axial direction. According to this configuration, the flow direction regulating member can be moved in the axial direction by a necessary amount as necessary. Therefore, the discharge capacity of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be adjusted appropriately.

  In the invention described in claim 14, the flow direction regulating member is constituted by a plate-like member having at least an outer peripheral portion having elasticity. When the rotation speed of the rotor increases, the flow rate of the refrigerant in the gap portion increases. Therefore, the negative pressure generated by the venturi effect increases. According to this configuration, the flow direction regulating member is configured by a plate-like member having at least an outer peripheral portion having elasticity. Therefore, the flow direction regulating member is gradually deformed and displaced toward the rotor side as the rotational speed of the rotor increases as the outer peripheral portion having elasticity increases. That is, the size of the opening of the gap is reduced, and the flow rate of the refrigerant in the gap is increased. Therefore, the discharge capacity of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be gradually increased as the rotational speed of the rotor increases.

  In the invention described in claim 15, the flow direction regulating member is fixed to the stator or the housing. According to this configuration, the flow direction regulating member does not rotate. Therefore, the loss accompanying rotation can be suppressed as compared with the case where the flow direction regulating member rotates.

  In the invention described in claim 16, the flow direction regulating member is fixed to the rotating shaft or the rotor. According to this configuration, the flow direction regulating member rotates together with the rotor. Therefore, compared with the case where only the rotor rotates, the flow rate of the refrigerant in the gap can be increased. Therefore, the discharge capacity of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be improved.

  In the invention according to claim 17, at least a part of the flow direction regulating member is immersed in the refrigerant in a state where the rotor is not rotating. According to this configuration, when the rotor rotates, a negative pressure due to the Venturi effect is immediately generated. Therefore, the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator is also immediately discharged. Therefore, it is possible to quickly reduce the loss caused by the shearing force of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator, which occurs when the rotor rotates.

  In the invention described in claim 18, the flow direction regulating member is provided so as to be opposed to the predetermined member that is always in a stationary state in the radial direction with a gap therebetween, and a second gap portion that is smaller than the gap portion is formed. To do. According to this configuration, not only the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator but also the refrigerant flowing into the second gap due to the negative pressure due to the venturi effect is discharged. Is done. As a result, since the amount of the refrigerant in the gap is further suppressed, the stirring loss of the refrigerant can be further reduced.

  According to a nineteenth aspect of the present invention, the flow direction regulating member has a wall portion that prevents the refrigerant on the counter-rotor side of the flow direction regulating member from flowing into the gap portion. According to this structure, the refrigerant | coolant which returns to a clearance gap part can be suppressed. Therefore, it is possible to suppress a situation in which the refrigerant returns to the gap and the negative pressure due to the venturi effect decreases.

  According to a twentieth aspect of the present invention, there is provided a refrigerant return portion that returns the refrigerant scattered toward the radially outer side along with the rotation of the rotor to the refrigerant storage portion. According to this structure, the refrigerant | coolant scattered with rotation of a rotor can be reliably returned to a storage part. Therefore, a sufficient amount of refrigerant required for cooling can always be secured in the reservoir. Therefore, it is possible to suppress a decrease in cooling performance.

  According to a twenty-first aspect of the present invention, there is provided a support portion for supporting the rotating shaft, wherein the housing is inclined to the counter-rotor side of the flow direction regulating member and the outer peripheral surface is inclined toward the axial center toward the rotor side. The refrigerant return part is formed by the support part and the flow direction regulating member. According to this structure, a refrigerant | coolant return part can be reliably comprised with the outer peripheral surface of a support part, and a flow direction control member. And since the outer peripheral surface of the support part inclines, the scattered refrigerant can be collected reliably. Therefore, a sufficient amount of refrigerant required for cooling can always be ensured in the reservoir.

  In a twenty-second aspect of the present invention, the flow direction regulating member is configured by combining a plurality of members. According to this structure, even if a flow direction control member is a complicated shape, it can be comprised comparatively easily.

  According to a twenty-third aspect of the present invention, there is a shielding member for blocking the scattering of the refrigerant toward the radially outer side generated with the rotation of the rotor on the radially outer side of the axial end portion of the stator. According to this configuration, on the radially outer side of the axial end portion of the stator, the shielding member shields the scattering of the refrigerant toward the radially outer side. Therefore, the shielded refrigerant is applied to the axial end of the stator. Therefore, the axial end portion of the stator, that is, the coil end portion of the stator coil can be further cooled.

  According to the twenty-fourth aspect of the present invention, the housing is housed in the housing, a part thereof is immersed in the coolant, the output shaft is rotatably supported by the housing, and the power transmitted through the rotating shaft is output from the output shaft. A power transmission device. According to this configuration, even in a rotating electrical machine having a power transmission device, it is possible to reduce a loss due to the shearing force of the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator. In addition, the cooling capacity of the coil end portion can be improved by the refrigerant discharged from between the outer peripheral surface of the rotor and the inner peripheral surface of the stator. Furthermore, since the amount of the refrigerant in the gap portion is restricted as the rotor rotates, the stirring loss of the refrigerant accompanying the rotation of the rotor can be suppressed.

  The invention according to claim 25 is a first reservoir that stores refrigerant in which the rotor and the stator are immersed, a second reservoir that stores refrigerant in which the power transmission device is immersed, and a first reservoir. In addition to partitioning the second storage part, the refrigerant has a liquid level height adjusting part that adjusts the height of the refrigerant stored in the first storage part and the liquid level of the refrigerant stored in the second storage part. When the power transmission device and the stator are cooled by the refrigerant, there is an appropriate refrigerant liquid level. When the lubrication of the power transmission device is promoted by the refrigerant and the stator is cooled, the liquid level of the refrigerant is appropriate for each other. According to this configuration, the liquid level of the refrigerant can be appropriately adjusted by the liquid level adjustment unit. Therefore, it is possible to efficiently achieve both the lubrication effect of the power transmission device and the cooling effect of the stator.

  In a twenty-sixth aspect of the invention, the liquid level adjustment unit adjusts the liquid level of the refrigerant in the first storage unit and the second storage unit to be different. When the lubrication of the power transmission device is promoted by the refrigerant and the stator is cooled, the required liquid level of the refrigerant differs between the power transmission device and the stator. According to this configuration, the liquid level height adjustment unit can adjust the liquid level of the refrigerant that lubricates the power transmission device and the liquid level of the refrigerant that cools the stator to be different. Therefore, the lubrication effect of the power transmission device and the cooling effect of the stator can be achieved efficiently and reliably.

  According to a twenty-seventh aspect of the present invention, the liquid level adjustment unit adjusts the liquid level of the refrigerant in the first storage unit to be constant regardless of the rotational speed. According to this configuration, it is possible to secure a sufficient amount of refrigerant for cooling the stator regardless of the rotational speed. Therefore, the stator can be reliably cooled even if the rotational speed changes.

  In a twenty-eighth aspect of the invention, the liquid level adjustment unit adjusts the liquid level of the refrigerant to change according to the number of rotations. When the rotational speed changes, the height of the coolant level required for lubricating the power transmission device and the height of the coolant level required for cooling the stator also change accordingly. According to this configuration, the liquid level adjustment unit can adjust the liquid level of the refrigerant to change according to the number of rotations. Therefore, even if the liquid level of the refrigerant required for the power transmission device and the stator changes with the rotation speed, the lubricating effect of the power transmission device and the cooling effect of the stator can be efficiently balanced. it can.

  In the invention according to claim 29, the refrigerant also functions as a lubricant for the power transmission device. According to this configuration, the power transmission device can be lubricated with the refrigerant.

  In a thirty-third aspect of the present invention, the flow direction regulating member is provided so as to face an axial end surface far from the power transmission device among the axial end surfaces of the rotor. According to this configuration, the refrigerant flowing between the outer peripheral surface of the rotor and the inner peripheral surface of the stator is discharged only on the axial end surface side farther from the power transmission device among the axial end surfaces of the rotor. Is done. Therefore, the refrigerant flows from the axial end surface side closer to the power transmission device to the axial end surface side farther from the power transmission device through the space between the outer peripheral surface of the rotor and the inner peripheral surface of the stator. Therefore, more refrigerant is stored on the counter-rotor side of the flow direction regulating member provided to face the axial end surface far from the power transmission device. Accordingly, it is possible to reliably cool the axial end portion of the stator far from the power transmission device, which is difficult to be cooled by the refrigerant scattered and flowing by the power transmission device.

It is an axial sectional view of the motor generator in a 1st embodiment. It is 1 (b) -1 (b) arrow sectional drawing in Fig.1 (a). It is sectional drawing seen from the axial center side at the time of cut | disconnecting the stator in Fig.1 (a) to the circumferential direction. FIG. 2 is a front view of a rear flow direction regulating member in FIG. It is an axial sectional view of the rear flow direction regulating member in FIG. FIG. 2 is a rear view of the rear flow direction regulating member in FIG. It is a front view of the flow direction control member of the front side in Fig.1 (a). It is an axial sectional view of the flow direction regulating member on the front side in FIG. FIG. 2 is a rear view of the front flow direction regulating member in FIG. It is an expanded sectional view of the lower part in the rear side in Drawing 1 (a) for explaining the flow of a refrigerant. It is a graph of the refrigerant | coolant shear loss with respect to the rotational speed for demonstrating the effect of the motor generator in 1st Embodiment. It is a graph of the thermal resistance between the coil end for demonstrating the effect of the motor generator in 1st Embodiment, and a housing. It is an axial sectional view of a motor generator in a 2nd embodiment. FIG. 13 is a front view of a rear flow direction regulating member in FIG. 12. FIG. 13 is an axial sectional view of a rear flow direction regulating member in FIG. 12. FIG. 13 is a rear view of the rear flow direction regulating member in FIG. 12. It is an axial sectional view of a motor generator in a 3rd embodiment. It is a front view of the flow direction control member of the rear side in FIG. FIG. 17 is an axial sectional view of a rear flow direction regulating member in FIG. 16. FIG. 17 is a rear view of the rear flow direction regulating member in FIG. 16. It is 20-20 arrow sectional drawing in FIG. 16 for demonstrating the flow of a refrigerant | coolant. It is an axial sectional view of the motor generator in a 4th embodiment. It is a front view of the flow direction control member of the rear side in FIG. FIG. 22 is an axial sectional view of a rear flow direction regulating member in FIG. 21. FIG. 22 is a rear view of the rear flow direction regulating member in FIG. 21. It is an axial sectional view of a motor generator in a 5th embodiment. FIG. 26 is a front view of the rear flow direction regulating member in FIG. 25. FIG. 26 is an axial sectional view of a rear flow direction regulating member in FIG. 25. FIG. 26 is a rear view of the rear flow direction regulating member in FIG. 25. FIG. 26 is an enlarged cross-sectional view of a rear lower portion in FIG. 25 for illustrating the flow of the refrigerant. It is 30-30 arrow sectional drawing in FIG. 25 for demonstrating the flow of a refrigerant | coolant. It is a graph of the thermal resistance between the coil end for demonstrating the effect of the motor generator in 5th Embodiment, and a housing. It is an axial sectional view of a motor generator in a 6th embodiment. FIG. 33 is a front view of a rear flow direction regulating member in FIG. 32. FIG. 33 is an axial sectional view of a rear flow direction regulating member in FIG. 32. FIG. 33 is a rear view of the rear flow direction regulating member in FIG. 32. It is an axial sectional view of a motor generator in a 7th embodiment. FIG. 37 is a front view of a rear flow direction regulating member in FIG. 36. FIG. 37 is an axial cross-sectional view of the rear flow direction regulating member in FIG. 36. FIG. 37 is a rear view of the rear flow direction regulating member in FIG. 36. It is an axial sectional view of a motor generator in an 8th embodiment. It is a front view of the flow direction control member of the rear side in FIG. It is an axial sectional view of the rear flow direction regulating member in FIG. FIG. 41 is a rear view of the rear flow direction regulating member in FIG. 40. It is an expanded sectional view of the rear lower part in FIG. 40 for demonstrating the retention effect of a refrigerant | coolant. It is an axial sectional view of a motor generator in a 9th embodiment. FIG. 46 is a front view of the rear flow direction regulating member in FIG. 45. It is an axial sectional view of the rear flow direction regulating member in FIG. FIG. 46 is a rear view of the rear flow direction regulating member in FIG. 45. FIG. 46 is a front view of the front flow direction regulating member in FIG. 45. FIG. 46 is an axial sectional view of a front flow direction regulating member in FIG. 45. FIG. 46 is a rear view of the front flow direction regulating member in FIG. 45. It is an expanded sectional view of the rear lower part in FIG. 45 for demonstrating the retention effect of a refrigerant | coolant. It is an axial sectional view of a motor generator in a 10th embodiment. FIG. 54 is a front view of a rear flow direction regulating member in FIG. 53. FIG. 54 is an axial sectional view of a rear flow direction regulating member in FIG. 53. FIG. 54 is a rear view of the rear flow direction regulating member in FIG. 53. It is an axial sectional view of the motor generator in an 11th embodiment. FIG. 58 is a front view of the rear flow direction regulating member in FIG. 57. FIG. 58 is an axial sectional view of a rear flow direction regulating member in FIG. 57. FIG. 58 is a rear view of the rear flow direction regulating member in FIG. 57. FIG. 58 is a front view of the front flow direction regulating member in FIG. 57. FIG. 58 is an axial cross-sectional view of the front flow direction regulating member in FIG. 57. FIG. 58 is a rear view of the front flow direction regulating member in FIG. 57. It is an axial sectional view of a motor generator in a 12th embodiment. FIG. 65 is a front view of the rear flow direction regulating member in FIG. 64. FIG. 65 is an axial cross-sectional view of a rear flow direction regulating member in FIG. 64. FIG. 65 is a rear view of the rear flow direction regulating member in FIG. 64. It is a front view of the support member in FIG. FIG. 65 is an axial sectional view of the support member in FIG. 64. It is a rear view of the supporting member in FIG. FIG. 65 is an enlarged cross-sectional view of the lower part of the rear side in FIG. 64 for explaining the operation of the flow direction regulating member. It is an axial sectional view of a motor generator in a 13th embodiment. It is an axial sectional view of a motor generator in a 14th embodiment. FIG. 74 is a front view of a rear flow direction regulating member in FIG. 73. FIG. 74 is an axial cross-sectional view of a rear flow direction regulating member in FIG. 73. FIG. 74 is a rear view of the rear flow direction regulating member in FIG. 73. It is an axial direction sectional view of a motor generator for explaining operation of a flow direction control member. It is an axial sectional view of the motor generator in a 15th embodiment. It is an axial sectional view of a motor generator in a 16th embodiment. FIG. 80 is an enlarged cross-sectional view of a rear lower portion in FIG. 79 for illustrating the flow of the refrigerant. FIG. 80 is an enlarged cross-sectional view of a rear upper portion in FIG. 79 for illustrating the flow of the refrigerant. It is an axial sectional view of a motor generator in a 17th embodiment. It is an axial sectional view of a motor generator in an 18th embodiment. It is an axial direction sectional view of a motor generator in a 19th embodiment. It is an axial direction sectional view of a motor generator in a 20th embodiment. It is an axial sectional view of a motor generator in a 21st embodiment.

  Next, an embodiment is given and this invention is demonstrated in detail. In the present embodiment, an example in which the rotating electrical machine according to the present invention is applied to a motor generator mounted on a vehicle is shown.

(First embodiment)
First, the configuration of the motor generator will be described with reference to FIGS. 1 (a), 1 (b), and 2 to 9. FIG. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Moreover, the part immersed in the refrigerant | coolant in Fig.1 (a) and FIG. 9 is shown with the continuous line in order to make a structure intelligible, since a refrigerant | coolant is a liquid.

  A motor generator 1A shown in FIG. 1A is a device that is mounted on a vehicle, operates as a motor when electric power is supplied from a battery, and generates a driving force for driving the vehicle. It is also a device that operates as a generator by supplying driving force from the engine of the vehicle and generates electric power for charging the battery. The motor generator 1A includes a rotating shaft 10, a rotor 11, a stator 12, a housing 13, a refrigerant 14, and flow direction regulating members 15A and 16A.

  The rotating shaft 10 is a columnar member made of a metal or resin that rotates with the rotor 11 or a composite material thereof.

  The rotor 11 is an annular member that has a permanent magnet, forms a part of a magnetic path, and generates a magnetic flux. The rotor 11 generates a rotational force by interlinking magnetic fluxes generated by a stator 12 described later. Moreover, by rotating with the driving force supplied from the engine of a vehicle, the generated magnetic flux is linked with a stator coil 121 described later, and an alternating current is generated in the stator coil 121. The rotor 11 is fixed to the rotating shaft 10.

  The stator 12 is a member that forms a part of a magnetic path and generates a magnetic flux when a current flows. Further, it is a member that constitutes a part of the magnetic path and generates alternating current by interlinking with the magnetic flux generated by the rotor 11. The stator 12 includes a stator core 120 and a stator coil 121.

  The stator core 120 is an annular member made of a magnetic material that constitutes a part of the magnetic path and holds the stator coil 121. As shown in FIG. 2, the stator core 120 includes a plurality of slots 120 a penetrating from one end side in the axial direction to the other end side. As shown in FIG. 1A, the stator core 120 is disposed such that its inner peripheral surface faces the outer peripheral surface of the rotor 11 in the radial direction with a gap.

  The stator coil 121 is a member that generates magnetic flux when current flows. Moreover, it is also a member that generates alternating current by interlinking with the magnetic flux generated by the rotor 11. As shown in FIG. 2, the stator coil 121 includes a slot accommodating portion 121a and a coil end portion 121b. The slot accommodating part 121 a is a part accommodated in the slot 120 a of the stator core 120. The coil end portion 121b is a portion that is folded back into a V shape protruding in the axial direction from the axial end surface of the stator core 120. A space portion 121c is formed by the axial end surface of the stator core 120 and the coil end portion 121b.

  A housing 13 shown in FIG. 1A is a member that covers both end surfaces of the stator 12 in the axial direction and rotatably supports the rotary shaft 10. The housing 13 includes a center housing 130, a front housing 131, and a rear housing 132.

  The center housing 130 is a columnar member made of metal that houses the rotor 11 and the stator 12 and rotatably supports the rear end of the rotating shaft 10. The rotor 11 and the stator 12 are accommodated in the center housing 130. The outer peripheral surface of the stator core 120 is fixed to the inner peripheral surface of the center housing 130. The rear end of the rotary shaft 10 is rotatably supported by the center housing 130 via a bearing.

  The front housing 131 is a columnar member made of metal that covers the front opening of the center housing 130 and rotatably supports the front end of the rotary shaft 10. The front housing 131 is fixed to the center housing 130 so as to cover the opening on the front side of the center housing 130. The front end of the rotary shaft 10 is rotatably supported by the front housing 131 via a bearing.

  The rear housing 132 is a cylindrical member made of metal that covers the opening on the rear side of the center housing 130. The rear housing 132 is fixed to the center housing 130 so as to cover the opening on the rear side of the center housing 130.

  The refrigerant 14 is a liquid substance that is injected into the space covered by the housing 13 and cools the rotor 11 and the stator 12. Specifically, it is oil. The refrigerant 14 is injected until the liquid level almost coincides with the axis of the rotating shaft 10 in a state where the motor generator 1A is arranged so that the direction is the front-rear direction and the rotating shaft 10 and the rotor 11 are stationary. Yes. Therefore, the lower side than the axis of the rotating shaft 10 is immersed in the refrigerant 14. The refrigerant 14 flows between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 below the axis of the rotary shaft 10.

  The flow direction restricting member 15A is a member made of a metal or resin that restricts the flow of the refrigerant 14 on the rear side of the rotor 11, or a composite material thereof. As shown in FIGS. 3 to 5, the flow direction restricting member 15 </ b> A includes a main body 150.

  The main body 150 is a disk-shaped part. The surface of the rotor 11 that faces the axial end surface is planar. The main body 150 includes a rotary shaft insertion hole 150a and a bolt insertion hole 150b.

  The rotation shaft insertion hole 150a is a circular hole through which the rotation shaft 10 is inserted. The rotation shaft insertion hole 150 a is provided at the center of the main body 150.

  The bolt insertion hole 150 b is a circular hole through which a bolt for fixing the main body 150 is inserted. Four bolt insertion holes 150b are provided at equal intervals in the circumferential direction outside the rotation shaft insertion hole 150a.

  As shown in FIG. 1A, the flow direction regulating member 15A is axially spaced apart from the axial end face on the rear side of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. It arrange | positions so that it may oppose. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the volt | bolt penetration hole 150b. The flow direction restricting member 15 </ b> A restricts the flow of the refrigerant 14 by a gap 150 c formed between the rotor 11 and the rear axial end face. 15 A of flow direction control members are set so that the opening part 150d of the outer peripheral side of the clearance part 150c may oppose the coil end part 121b and the space part 121c in radial direction.

  A flow direction restricting member 16A shown in FIG. 1A is a member made of a metal or resin that restricts the flow of the refrigerant 14 on the front side of the rotor 11, or a composite material thereof. As shown in FIGS. 6 to 8, the flow direction regulating member 16 </ b> A includes a main body 160.

  The main body 160 is a disk-shaped part. The surface of the rotor 11 that faces the axial end surface is planar. The main body 160 includes a rotation shaft insertion hole 160a and a bolt insertion hole 160b.

  The rotation shaft insertion hole 160a is a circular hole through which the rotation shaft 10 is inserted. The rotation shaft insertion hole 160 a is provided at the center of the main body 160.

  The bolt insertion hole 160 b is a circular hole through which a bolt for fixing the main body 160 is inserted. Four bolt insertion holes 160b are provided at equal intervals in the circumferential direction outside the rotation shaft insertion hole 160a.

  As shown in FIG. 1 (a), the flow direction regulating member 16A is axially spaced from the front axial end face of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 160a. It arrange | positions so that it may oppose. And it is being fixed to the front housing 131 with the volt | bolt inserted in the bolt insertion hole part 160b. The flow direction restricting member 16 </ b> A restricts the flow of the refrigerant 14 by a gap portion 160 c formed between the front end of the rotor 11 in the axial direction. 16 A of flow direction control members are set so that the opening part 160d of the outer peripheral side of the clearance part 160c may oppose the coil end part 121b and the space part 121c in radial direction.

  Next, the operation of the motor generator according to the first embodiment will be described with reference to FIG.

  When electric power is supplied from the battery, the motor generator 1 shown in FIG. 1A operates as a motor. When electric power is supplied from the battery, a current flows through the stator coil 121 and magnetic flux is generated. When the magnetic flux generated by the stator coil 121 is linked to the rotor 11, the rotor 11 generates a rotational force. In this way, the motor generator 1 generates a driving force for driving the vehicle.

  On the other hand, when the driving force is supplied from the engine of the vehicle, the motor generator 1 operates as a generator. When driving force is supplied from the vehicle engine, the rotor 11 rotates. When the magnetic flux generated by the rotor 11 is linked to the stator coil 121, the stator coil 121 generates an alternating current. In this way, the motor generator 1 generates electric power for charging the battery.

  Next, the effect of the motor generator of the first embodiment will be described.

  According to the first embodiment, when the rotor 11 rotates in FIG. 1A, a flow from the axial center side to the outer peripheral side is generated in the refrigerant 14 by centrifugal force. The motor generator 1A has flow direction regulating members 15A and 16A provided to face the axial end face of the rotor 11 with an interval therebetween. Therefore, on the rear side of the rotor 11, as shown in FIG. 9, the refrigerant 14 accumulates in the gap 150 c and is discharged in the radial direction by the centrifugal force of the rotor 11. As a result, a negative pressure is generated by the venturi effect, and the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 is discharged to the outer peripheral side. Thereby, the loss accompanying the shear force of the refrigerant | coolant 14 currently flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 which generate | occur | produces when the rotor 11 rotates can be reduced. Further, since the refrigerant scooped up by the gap 150c does not come into contact with the refrigerant reservoir 14a shown in FIG. 1B, the loss due to the shearing force of the refrigerant 14 at the side surface of the rotor 11 can be reduced. The same applies to the front side of the rotor 11. As a result, as shown in FIG. 10, when there is no flow direction restricting member, it is possible to greatly reduce the loss due to the shearing force of the refrigerant that has increased as the rotational speed increases. Further, the cooling capacity of the coil end portion 121b can be improved by the refrigerant 14 discharged from between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator. As a result, as shown in FIG. 11, the thermal resistance between the coil end portion 121 b and the housing 13 at the upper part of the motor generator 1 </ b> A can be reduced as compared with the case where there is no flow direction regulating member. Furthermore, since the amount of the refrigerant 14 in the gaps 150c and 160c is limited as the rotor 11 increases in rotation, the stirring loss of the refrigerant 14 associated with the increase in rotation of the rotor 11 can be suppressed.

  According to the first embodiment, as shown in FIG. 1A, the openings 150d and 160d of the gap portions 150c and 160c are opposed to the coil end portion 121b in the radial direction. Therefore, on the rear side of the rotor 11, as shown in FIG. 9, the refrigerant 14 flowing in the gap 150c can be guided to the coil end 121b. Therefore, the inner peripheral side of the coil end portion 121b can be reliably cooled. The same applies to the front side of the rotor 11. Therefore, the cooling capacity of the coil end part 121b can be improved.

  According to the first embodiment, as shown in FIG. 1A, the openings 150d and 160d of the gaps 150c and 160c are opposed to the space 121c in the radial direction. Therefore, at the rear side of the rotor 11, as shown in FIG. 9, the refrigerant 14 flowing through the gap 150c can be guided to the space 121c. That is, the refrigerant 14 can be guided to the inside of the coil end portion 121b. The same applies to the front side of the rotor 11. Therefore, the inside of the coil end part 121b can be reliably cooled. Therefore, the cooling capacity of the coil end part 121b can be improved.

  According to the first embodiment, the flow direction regulating members 15 </ b> A and 16 </ b> A are fixed to the housing 13 as shown in FIG. Therefore, the flow direction regulating members 15A and 16A do not rotate. Therefore, the loss accompanying rotation can be suppressed as compared with the case where the flow direction regulating member rotates.

(Second Embodiment)
Next, a motor generator according to a second embodiment will be described. The motor generator of the second embodiment is such that the flow direction regulating member on the rear side is fixed to the stator, whereas the motor generator of the first embodiment fixes the flow direction regulating member to the housing. It is.

  The motor generator of the second embodiment is the same as the motor generator of the first embodiment except for the rear flow direction regulating member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 12 to 15, and description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 12 is indicated by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  A flow direction restricting member 15B of the motor generator 1B shown in FIG. 12 includes a main body 150 and a fixed portion 151 as shown in FIGS.

  The fixing part 151 is a bent strip-shaped part for fixing the main body part 150 to the stator core 120. Three fixing portions 151 are provided on the outer peripheral portion of the main body 150 at regular intervals in the circumferential direction. The fixing portion 151 includes a bolt insertion hole portion 151a.

  The bolt insertion hole portion 151 a is a circular hole through which a bolt for fixing the fixing portion 151 is inserted. The bolt insertion hole 151 a is provided at the tip of the fixed part 151.

  As shown in FIG. 12, the flow direction regulating member 15B is opposed to the axial end surface of the rotor 11 with a gap from the axial end surface of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. Are arranged as follows. And it is being fixed to the stator core 120 with the volt | bolt inserted in the bolt insertion hole 150b. The flow direction regulating member 15B is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the second embodiment will be described.

  According to the second embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the second embodiment, the flow direction regulating member 15B is fixed to the stator 12 as shown in FIG. Therefore, the flow direction regulating member 15B does not rotate. Therefore, the loss accompanying rotation can be suppressed as compared with the case where the flow direction regulating member rotates.

(Third embodiment)
Next, a motor generator according to a third embodiment will be described. The motor generator of the third embodiment is provided with a convex portion and a concave portion with respect to the flow direction regulating member on the rear side of the motor generator of the first embodiment.

  The motor generator according to the third embodiment is the same as the motor generator according to the first embodiment except for the convex portion and the concave portion. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 16 to 19, and description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 16 is shown by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  A flow direction regulating member 15C of the motor generator 1C shown in FIG. 16 includes a main body 150 having a convex portion 150e and a concave portion 150f, as shown in FIGS. The main body 150 is a disk-shaped portion made of a resin having a flange at the rear end portion in the axial direction. The convex portions 150e and the concave portions 150f extend radially on the rotor side surface of the main body portion 150 from the axial center side to the outer peripheral side. A plurality of convex portions 150e and concave portions 150f are formed uniformly in the circumferential direction over the entire circumference of the main body portion 150.

  As shown in FIG. 16, the flow direction regulating member 15C is configured such that the surface on which the convex portion 150e and the concave portion 150f are formed is the rear axis of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. It arrange | positions so that it may oppose to an axial direction at intervals with a direction end surface. And it is being fixed to the center housing 130 with the screw penetrated to the screw penetration hole 150b. The flow direction regulating member 15C is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the third embodiment will be described.

  According to the third embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the third embodiment, as shown in FIGS. 17 and 18, the flow direction regulating member 15 </ b> C has the recess 150 f on the entire surface of the main body 150 on the rotor side. As shown in FIG. 16, the axial end surface of the rotor 11 and the recess 150 f have a wide interval and can hold more refrigerant 14. Therefore, as shown in FIG. 20, more refrigerant 14 can be supplied to the coil end portion 121b. Thereby, the cooling performance of the coil end part 121b can be improved. However, when the space between the rotor 11 and the axial end surface becomes wide, the flow rate of the refrigerant 14 becomes slow and the negative pressure decreases. Therefore, the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 is reduced. However, as shown in FIGS. 17 and 18, the flow direction regulating member 15 </ b> C has a convex portion 150 e on the entire surface of the main body portion 150 on the rotor side. As shown in FIG. 16, the gap between the axial end surface of the rotor 11 and the convex portion 150e is narrow, the flow rate of the refrigerant 14 increases, and the negative pressure increases. Therefore, the discharge capacity of the refrigerant 14 that has been lowered due to the influence of the recess 150f can be compensated. That is, it is possible to improve the cooling performance of the coil end portion 121b while ensuring the discharge capacity of the refrigerant 14.

(Fourth embodiment)
Next, a motor generator according to a fourth embodiment will be described. The motor generator of the fourth embodiment is obtained by partially changing the shape of the convex portion and the concave portion with respect to the motor generator of the third embodiment.

  The motor generator of the fourth embodiment is the same as the motor generator of the third embodiment except for the shape of the convex part and the concave part. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 21 to 24, and the description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 21 is shown by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those in the third embodiment are omitted from the description unless the same reference numerals are required.

  A flow direction regulating member 15D of the motor generator 1D shown in FIG. 21 includes a main body 150 having convex portions 150e and 150g and concave portions 150f and 150h, as shown in FIGS. As shown in FIG. 22, the convex portion 150 e and the concave portion 150 f are formed on the upper left side of the surface of the main body portion 150 on the rotor side.

  The convex portion 150g extends in an arc shape in the circumferential direction on the right half of the surface of the main body portion 150 on the rotor side.

  The recess 150h extends in a circular arc shape in the circumferential direction on the lower left side of the surface of the main body 150 on the rotor side.

  As shown in FIG. 21, the flow direction regulating member 15D has a surface on which the protrusions 150e and 150g and the recesses 150f and 150h are formed in the rotor 11 in a state where the rotation shaft 10 is inserted into the rotation shaft insertion hole 150a. It arrange | positions so that the axial direction end surface of a rear side may be spaced apart and it may oppose an axial direction. And it is being fixed to the center housing 130 with the screw penetrated to the screw penetration hole 150b. The flow direction regulating member 15D is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the fourth embodiment will be described.

  According to the fourth embodiment, by having the same configuration as that of the third embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the fourth embodiment, as shown in FIG. 22, the flow direction regulating member 15D has a concave portion 150f on the upper left side and a concave portion 150h on the lower left side on the rotor side surface of the main body 150. Yes. The axial end surface of the rotor 11 and the recesses 150f and 150h have a wide interval and can hold more refrigerant 14. Therefore, more refrigerant 14 can be supplied to the coil end portion 121b. Thereby, the cooling performance of the coil end part 121b can be improved. However, when the space between the rotor 11 and the axial end surface becomes wide, the flow rate of the refrigerant 14 becomes slow and the negative pressure decreases. Therefore, the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 is reduced. However, the flow direction regulating member 15D has a convex portion 150e on the upper left side and 150g on the right half on the surface of the main body 150 on the rotor side. The gap between the axial end face of the rotor 11 and the projections 150e, 150g is narrow, the flow rate of the refrigerant 14 increases, and the negative pressure increases. Therefore, it is possible to make up for the discharge capacity of the refrigerant 14 that has been reduced by the influence of the recesses 150f and 150h. That is, it is possible to improve the cooling performance of the coil end portion 121b while ensuring the discharge capacity of the refrigerant 14.

(Fifth embodiment)
Next, a motor generator according to a fifth embodiment will be described. The motor generator of the fifth embodiment is provided with a through-hole portion with respect to the flow direction regulating member on the rear side of the motor generator of the first embodiment.

  The motor generator of the fifth embodiment is the same as the motor generator of the first embodiment except for the through hole portion. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 25 to 28, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIGS. 25 and 29 is indicated by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  A flow direction restricting member 15E of the motor generator 1E shown in FIG. 25 includes a main body 150 having a through hole 150i as shown in FIGS.

  The through hole 150i is a hole that penetrates the main body 150 in the axial direction. As shown in FIG. 26, four through-hole portions 150 i are formed at equal intervals in the circumferential direction on the lower left side of the surface of the main body 150 on the rotor side.

  As shown in FIG. 25, the flow direction restricting member 15E faces the axial direction with a gap from the axial end face on the rear side of the rotor 11 in a state where the rotating shaft 10 is inserted into the rotating shaft insertion hole 150a. Are arranged as follows. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the volt | bolt penetration hole 150b. The through hole 150 i is fixed so as to be immersed in the refrigerant 14. The flow direction regulating member 15E is set so that the opening 150d on the outer peripheral side of the gap 150c is opposed to the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the fifth embodiment will be described.

  According to the fifth embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the fifth embodiment, the flow direction regulating member 15E has the through hole 150i penetrating in the axial direction. Therefore, as shown in FIG. 29, the refrigerant 14 can be supplied to the gap 150c through the through hole 150i from the rear side of the flow direction regulating member 15E on the side opposite to the rotor. Therefore, as shown in FIG. 30, a sufficient amount of the refrigerant 14 can be continuously guided to the coil end portion 121b. Thereby, the cooling performance of the coil end part 121b can be improved. As a result, as shown in FIG. 31, the thermal resistance between the coil end portion 121b and the housing 13 in the upper part of the motor generator 1E can be reduced as compared with the case where the flow direction regulating member has no through hole. Further, the rotor 11 can be reliably cooled by a sufficient amount of the refrigerant 14.

(Sixth embodiment)
Next, a motor generator according to a sixth embodiment will be described. The motor generator of the sixth embodiment is provided with a through-hole portion similar to the motor generator of the fifth embodiment with respect to the flow direction regulating member on the rear side of the motor generator of the third embodiment.

  The motor generator of the sixth embodiment is the same as the motor generator of the third embodiment except for the through hole portion. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 32 to 35, and description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 32 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the third embodiment are omitted from the description unless the same reference numerals are required.

  A flow direction regulating member 15F of the motor generator 1F shown in FIG. 32 includes a main body 150 having a convex portion 150e, a concave portion 150f, and a through hole portion 150i, as shown in FIGS.

  The through hole 150i is a hole that penetrates the main body 150 in the axial direction. As shown in FIG. 33, one through hole 150i is formed in each of six recesses 150f formed on the lower left side of the rotor side surface of the main body 150.

  As shown in FIG. 32, the flow direction regulating member 15F is configured such that the surface on which the convex portion 150e and the concave portion 150f are formed is the rear axis of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. It arrange | positions so that it may oppose to an axial direction at intervals with a direction end surface. And it is being fixed to the center housing 130 with the screw penetrated to the screw penetration hole 150b. The flow direction regulating member 15F is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the sixth embodiment will be described.

  According to the sixth embodiment, by having the same configuration as that of the third embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the sixth embodiment, the flow direction regulating member 15F has the through-hole portion 150i penetrating in the axial direction, similarly to the fifth embodiment. Therefore, the same effect as that of the fifth embodiment corresponding to the same configuration can be obtained.

(Seventh embodiment)
Next, a motor generator according to a seventh embodiment will be described. The motor generator of the seventh embodiment is provided with a coil end facing portion with respect to the flow direction regulating member on the rear side of the motor generator of the first embodiment.

  The motor generator of the seventh embodiment is the same as the motor generator of the first embodiment except for the coil end facing portion. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 36 to 39, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 36 is shown by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  The flow direction regulating member 15G of the motor generator 1G shown in FIG. 36 includes a main body portion 150 and a coil end facing portion 152, as shown in FIGS.

  The coil end facing portion 152 is a circular arc plate-shaped portion facing the tip end portion of the coil end portion 121b in the axial direction with a gap. The coil end facing portion 152 is formed on the outer periphery of the upper half of the main body portion 150.

  As shown in FIG. 36, the flow direction restricting member 15G is configured such that the main body 150 is spaced from the axial end surface on the rear side of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. The coil end facing portion 152 is disposed so as to face the axial direction with a gap from the tip end portion of the upper coil end portion 121b. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the volt | bolt penetration hole 150b. The flow direction regulating member 15G is set so that the opening 150d on the outer peripheral side of the gap portion 150c faces the coil end portion 121b and the space portion 121c in the radial direction.

  Next, the effect of the motor generator of the seventh embodiment will be described.

  According to the seventh embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the seventh embodiment, the flow direction restricting member 15G includes the coil end facing portion 152 that faces the tip end portion of the coil end portion 121b and is opposed to the axial direction at an interval. Therefore, the refrigerant 14 can flow along the coil end facing portion 152. Therefore, the refrigerant 14 can be guided to the outer peripheral side of the coil end portion 121b. Thereby, the outer peripheral side of the coil end part 121b can be cooled reliably, and the cooling capacity of the coil end part 121b can be improved.

(Eighth embodiment)
Next, a motor generator according to an eighth embodiment will be described. The motor generator of the eighth embodiment is provided with convex portions and concave portions having shapes different from those of the third and fourth embodiments with respect to the flow direction regulating member on the rear side of the motor generator of the first embodiment. .

  The motor generator according to the eighth embodiment is the same as the motor generator according to the first embodiment except for the convex portion and the concave portion. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 40 to 43, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 40 is indicated by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  As shown in FIGS. 41 to 43, the flow direction regulating member 15H of the motor generator 1H shown in FIG. 40 includes a main body 150 having a convex portion 150j and a concave portion 150k. The main body 150 is a disk-shaped portion made of a resin having a flange at the rear end portion in the axial direction.

  The convex portion 150j and the concave portion 150k extend in an arc shape in the circumferential direction on the surface of the main body portion 150 on the rotor side. The opening angle extends in an arc shape of 240 degrees. Two are formed concentrically.

  As shown in FIG. 40, the flow direction restricting member 15H is configured such that the surface on which the convex portion 150j and the concave portion 150k are formed is the rear shaft of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. It arrange | positions so that it may oppose to an axial direction at intervals with a direction end surface. And it is being fixed to the center housing 130 with the screw penetrated to the screw penetration hole 150b. The portions excluding the circumferential ends of the convex portions 150j and the concave portions 150k are fixed so as to be immersed in the refrigerant 14. The flow direction regulating member 15H is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, the effect of the motor generator of the eighth embodiment will be described.

  According to the eighth embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the eighth embodiment, the flow direction regulating member 15H has the convex portion 150j extending in the circumferential direction on the surface on the rotor side. Therefore, as shown in FIG. 44, the refrigerant 14 can be held on the inner peripheral side of the convex portion 150j. Therefore, the cooling capacity of the rotor 11 can be improved.

  According to the eighth embodiment, the convex portion 150j extends in an arc shape in the circumferential direction. Therefore, the refrigerant 14 flowing along the inner peripheral surface of the convex portion 150j can be guided from the circumferential end portion to the coil end portion 121b. Therefore, the refrigerant capacity of the coil end part 121b can be improved.

(Ninth embodiment)
Next, a motor generator according to a ninth embodiment will be described. The motor generator of the ninth embodiment has convex and concave portions having shapes different from those of the third, fourth, and eighth embodiments with respect to the flow direction regulating members on the front side and the rear side of the motor generator of the first embodiment. It is provided.

  The motor generator according to the ninth embodiment is the same as the motor generator according to the first embodiment except for the convex portion and the concave portion. Therefore, only the configuration of the flow direction regulating member will be described with reference to FIGS. 45 to 51, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 45 is shown by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  As shown in FIGS. 46 to 48, the flow direction regulating member 15I of the motor generator 1I shown in FIG. 45 includes a main body 150 having a convex portion 150l and a concave portion 150m. The main body 150 is a disk-shaped part made of metal having a flange at the rear end in the axial direction.

  The convex portion 150l and the concave portion 150m extend in an annular shape in the circumferential direction on the surface of the main body portion 150 on the rotor side. The convex portion 150 l is formed on the outer peripheral edge portion of the main body portion 150. The recess 150m is formed inside the protrusion 150l.

  As shown in FIG. 45, the flow direction restricting member 15I is configured such that the surface on which the convex portion 150l and the concave portion 150m are formed is the rear axis of the rotor 11 with the rotary shaft 10 inserted into the rotary shaft insertion hole 150a. It arrange | positions so that it may oppose to an axial direction at intervals with a direction end surface. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the volt | bolt penetration hole 150b. The flow direction regulating member 15I is set so that the opening 150d on the outer peripheral side of the gap 150c is opposed to the coil end 121b and the space 121c in the radial direction.

  As shown in FIGS. 49 to 51, the flow direction regulating member 16I of the motor generator 1I shown in FIG. 45 includes a main body 160 having a convex portion 160l and a concave portion 160m. The main body 160 is a disk-shaped part made of metal.

  The convex portion 160l and the concave portion 160m are annularly extended in the circumferential direction on the surface of the main body portion 160 on the rotor side. The convex portion 160l is formed on the outer peripheral edge portion of the main body portion 160. The concave portion 160m is formed inside the convex portion 160l.

  As shown in FIG. 45, the flow direction regulating member 16I is configured such that the surface on which the convex portion 160 and the concave portion 160 are formed is the axial direction on the front side of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole portion 160a. It arrange | positions so that it may oppose to an axial direction at intervals with an end surface. And it is being fixed to the front housing 131 with the volt | bolt inserted in the bolt penetration hole 150b. The flow direction regulating member 16I is set so that the opening 160d on the outer peripheral side of the gap portion 160c faces the coil end portion 121b and the space portion 121c in the radial direction.

  Next, the effect of the motor generator of the ninth embodiment will be described.

  According to the ninth embodiment, by having the same configuration as that of the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the ninth embodiment, the convex portion 150l extends in an annular shape in the circumferential direction. Therefore, as shown in FIG. 52, the refrigerant 14 can be held over the entire circumference on the inner circumferential side of the convex portion 150. The same applies to the flow direction regulating member 16I. Therefore, the cooling capacity of the rotor 11 can be further improved.

(10th Embodiment)
Next, a motor generator according to a tenth embodiment will be described. The motor generator of the tenth embodiment is such that the flow direction restricting member on the rear side is fixed to the stator, whereas the motor generator of the ninth embodiment fixes the flow direction restricting member to the housing. It is.

  The motor generator of the tenth embodiment is the same as the motor generator of the ninth embodiment except for the rear flow direction regulating member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 53 to 56, and the description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 53 is shown by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Further, the same components as those of the ninth embodiment are omitted from the description except for the case where the same reference numerals are required.

  As shown in FIGS. 54 to 56, the flow direction regulating member 15J of the motor generator 1J shown in FIG. 53 includes a main body 150 having a convex portion 150l and a fixing portion 151. The main body 150 is a disk-shaped member made of metal having a cylindrical portion on the outer periphery.

  The convex portion 150l and the concave portion 150m extend in an annular shape in the circumferential direction on the surface of the main body portion 150 on the rotor side. The convex portion 150 l is formed on the outer peripheral edge portion of the main body portion 150. The recess 150m is formed inside the protrusion 150l.

  The fixing part 151 is a bent strip-shaped part for fixing the main body part 150 to the stator core 120. Three fixing portions 151 are provided on the outer peripheral portion of the main body 150 at regular intervals in the circumferential direction. The fixing portion 151 includes a bolt insertion hole portion 151a.

  The bolt insertion hole portion 151 a is a circular hole through which a bolt for fixing the fixing portion 151 is inserted. The bolt insertion hole 151 a is provided at the tip of the fixed part 151.

  As shown in FIG. 53, the flow direction restricting member 15J is opposed to the axial end surface of the rotor 11 at a distance from the axial end surface of the rotor 11 with the rotary shaft 10 inserted through the rotary shaft insertion hole 150a. Are arranged as follows. And it is being fixed to the stator core 120 with the volt | bolt inserted in the bolt insertion hole 150b. The flow direction regulating member 15J is set so that the outer peripheral side opening 150d of the gap 150c is opposed to the coil end 121b and the space 121c in the radial direction.

  Next, effects of the motor generator of the tenth embodiment will be described.

  According to the tenth embodiment, by having the same configuration as that of the ninth embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the tenth embodiment, the flow direction regulating member 15J is fixed to the stator 12. Therefore, the flow direction regulating member 15J does not rotate. Therefore, the loss accompanying rotation can be suppressed as compared with the case where the flow direction regulating member rotates.

(Eleventh embodiment)
Next, a motor generator according to an eleventh embodiment will be described. The motor generator according to the eleventh embodiment is configured such that the flow direction regulating member is fixed to the rotating shaft, while the motor generator according to the first embodiment fixes the flow direction regulating member to the housing.

  The motor generator of the eleventh embodiment is the same as the motor generator of the first embodiment except for the flow direction regulating member. Therefore, only the configuration of the flow direction regulating member will be described with reference to FIGS. 57 to 63, and description of the operation and the flow of the refrigerant will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 57 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  As shown in FIGS. 58 to 60, the flow direction regulating member 15K of the motor generator 1K shown in FIG. 57 includes a main body 150 having a rotation shaft fitting hole 150n. The main body 150 is a disk-shaped part made of metal having a flange at the rear end in the axial direction. The main body 150 includes a rotation shaft fitting hole 150n. The rotation shaft fitting hole 150 n is a circular hole that fits with the rotation shaft 10. The rotation shaft fitting hole 150 n is formed at the center of the main body 150.

  As shown in FIG. 57, the flow direction restricting member 15K is press-fitted and fixed to the rotary shaft 10 so as to face the axial end surface on the rear side of the rotor 11 with a space therebetween. The flow direction regulating member 15K is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  As shown in FIGS. 61 to 63, the flow direction regulating member 16K of the motor generator 1K shown in FIG. 57 includes a main body 160 having a rotation shaft fitting hole 160n. The main body 160 is a disk-shaped part made of metal having a flange at the front end in the axial direction. The main body 160 includes a rotation shaft fitting hole 160n. The rotation shaft fitting hole 160 n is a circular hole that fits with the rotation shaft 10. The rotation shaft fitting hole 160n is formed at the center of the main body 160.

  As shown in FIG. 57, the flow direction regulating member 16K is press-fitted and fixed to the rotary shaft 10 so as to face the axial end surface on the front side of the rotor 11 with a space therebetween. The flow direction regulating member 16K is set so that the opening 160d on the outer peripheral side of the gap 160c faces the coil end 121b and the space 121c in the radial direction.

  Next, effects of the motor generator according to the eleventh embodiment will be described.

  According to the eleventh embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the eleventh embodiment, the flow direction regulating members 15 </ b> K and 16 </ b> K are fixed to the rotating shaft 10. Therefore, the flow direction regulating members 15 </ b> K and 16 </ b> K rotate together with the rotor 11. Accordingly, the flow rate of the refrigerant 14 in the gaps 150c and 160c can be increased as compared with the case where only the rotor rotates. Thereby, the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 can be improved.

(Twelfth embodiment)
Next, a motor generator according to a twelfth embodiment will be described. In the motor generator of the twelfth embodiment, the rear flow direction regulating member is movable in the axial direction with respect to the motor generator of the first embodiment.

  The motor generator of the twelfth embodiment is the same as the motor generator of the first embodiment except for the rear flow direction regulating member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 64 to 70, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. The portions immersed in the refrigerant in FIGS. 64 and 71 are indicated by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  A motor generator 1L shown in FIG. 64 includes a flow direction regulating member 15L, a support member 17L, and a pressing member 18.

  As shown in FIGS. 65 to 67, the flow direction restricting member 15 </ b> L includes a main body 150. The main body 150 is a disk-shaped portion made of metal having a flange at the front end in the axial direction. The main body 150 includes a support member insertion hole 150p and a pin insertion hole 150q.

  The support member insertion hole 150p is a hole through which the support member 17L is inserted. The support member insertion hole 150p is set to a dimension that allows the flow direction regulating member 15L to move in the axial direction along the support member 17L. The support member insertion hole 150 p is provided at the center of the main body 150.

  The pin insertion hole 150q is a hole through which a pin for holding the pressing member 18 is inserted. The inner diameter of the pin insertion hole 150q is set larger than the outer diameter of the pin. Three pin insertion holes 150q are provided at equal intervals in the circumferential direction outside the support member insertion hole 150p.

  As shown in FIGS. 68 to 70, the support member 17L is a member made of metal that supports the flow direction regulating member 15L so as to be movable in the axial direction. The support member 17L includes a main body 170. The main body 170 is a disk-shaped part having a flange at the front end in the axial direction. The main body 170 includes a rotary shaft insertion hole 170a, a bolt insertion hole 170b, and a pin fitting hole 170c.

  The rotation shaft insertion hole 170a is a circular hole through which the rotation shaft 10 is inserted. The rotation shaft insertion hole 170 a is provided at the center of the main body 170.

  The bolt insertion hole 170 b is a circular hole through which a bolt for fixing the main body 170 is inserted. Three bolt insertion holes 170b are provided at equal intervals in the circumferential direction outside the rotation shaft insertion hole 170a.

  The pin fitting hole 170c is a hole into which a pin for holding the pressing member 18 is fitted. Three pin insertion holes 150q are provided at equal intervals in the circumferential direction outside the support member insertion hole 150p.

  The pressing member 18 shown in FIG. 64 is a member that presses the flow direction regulating member 15L toward the rotor. Specifically, the spring 180 is used.

  15 L of flow direction control members are arrange | positioned so that it may oppose in an axial direction at intervals with the axial end surface of the rear side of the rotor 11, in the state which the rotating shaft 10 penetrated to the support member penetration hole part 150p. The support member 17L is configured such that the rotation shaft 10 is inserted into the rotation shaft insertion hole 170a and the rear end portion of the main body 170 is inserted into the support member insertion hole 150p of the flow direction restriction member 15L. It is arranged on the front side of 15L. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the bolt penetration hole 170b. Therefore, the flow direction regulating member 15L can move in the axial direction along the main body 170 of the support member 17L. The flow direction regulating member 15L is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  One end of the pin holding the spring 180 is fitted and fixed to the pin fitting hole 170c of the support member 17L. The other end of the pin holding the spring 180 is inserted into the pin insertion hole 150q of the flow direction regulating member 15L. Therefore, when the flow direction regulating member 15L moves to the rotor 11 side, the flow direction regulating member 15L is pressed to the counter rotor side by the spring 180.

  Next, effects of the motor generator of the twelfth embodiment will be described.

  According to the twelfth embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the twelfth embodiment, the flow direction regulating member 15L is provided so as to be movable in the axial direction. Therefore, the size of the gap can be adjusted by moving the flow direction regulating member 15L in the axial direction. Therefore, the flow rate of the refrigerant 14 in the gap 150c can be adjusted. As a result, the negative pressure generated by the venturi effect can be adjusted, and the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 can be adjusted.

  As the rotational speed of the rotor 11 increases, the flow rate of the refrigerant 14 in the gap 150c increases. Therefore, the negative pressure generated by the venturi effect increases. As a result, the flow direction regulating member 15L moves to the rotor side as shown in FIG. 71 due to the negative pressure. However, according to the twelfth embodiment, the flow direction regulating member 15L is pressed by the pressing member 18 to the rear side which is the counter-rotor side. Therefore, the flow direction regulating member 15L gradually moves to the rotor side as the rotational speed of the rotor 11 increases. Therefore, the discharge capacity of the refrigerant 14 can be gradually increased as the rotational speed of the rotor 11 increases.

  According to the twelfth embodiment, the pressing member 18 is a spring 180. Therefore, the flow direction regulating member 15L can be reliably pressed to the rear side that is on the counter-rotor side.

(13th Embodiment)
Next, a motor generator according to a thirteenth embodiment will be described. The motor generator of the thirteenth embodiment is configured such that the motor generator of the twelfth embodiment presses the rear flow direction regulating member with a spring, but presses it with a rubber member.

  The motor generator of the thirteenth embodiment is the same as the motor generator of the twelfth embodiment except for the pressing member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIG. 72, and the description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 72 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the twelfth embodiment are omitted from the description except where the same reference numerals are required.

  A motor generator 1M shown in FIG. 73 includes a flow direction regulating member 15M, a support member 17M, and a pressing member 18.

  The flow direction regulating member 15M is obtained by eliminating the pin insertion hole 150q of the flow direction regulating member 15L of the twelfth embodiment. The support member 17M is obtained by eliminating the pin fitting hole 170c of the support member 17L of the twelfth embodiment. The pressing member 18 is a rubber member 181 having an H-shaped cross section, whereas the twelfth embodiment is the spring 180.

  The flow direction restricting member 15M and the support member 17M are provided in the same manner as the flow direction restricting member 15L and the support member 17L. A rubber member 181 is provided in place of the spring 180.

  Next, effects of the motor generator of the thirteenth embodiment will be described.

  According to the thirteenth embodiment, by having the same configuration as that of the twelfth embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the thirteenth embodiment, the pressing member 18 is a rubber member 181. Therefore, the flow direction regulating member 15M can be reliably pressed to the rear side that is the counter-rotor side.

(14th Embodiment)
Next, a motor generator according to a fourteenth embodiment will be described. In the motor generator of the fourteenth embodiment, a part of the rear flow direction regulating member in the motor generator of the first embodiment is a member having elasticity.

  The motor generator of the fourteenth embodiment is the same as the motor generator of the first embodiment except for the rear flow direction regulating member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 73 to 77, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIGS. 73 and 77 is indicated by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the first embodiment are not described unless they are denoted by the same reference numerals.

  A flow direction regulating member 15N of the motor generator 1N shown in FIG. 73 includes a main body 150 as shown in FIGS. The main body 150 includes a disk part 150r and a flange part 150s.

  The disk part 150r is a disk-shaped member made of metal. The disc part 150r includes a rotary shaft insertion hole part 150a and a bolt insertion hole part 150b.

  The rotation shaft insertion hole 150a is a circular hole through which the rotation shaft 10 is inserted. The rotation shaft insertion hole 150 a is provided at the center of the main body 150.

  The bolt insertion hole 150 b is a circular hole through which a bolt for fixing the main body 150 is inserted. Four bolt insertion holes 150b are provided at equal intervals in the circumferential direction outside the rotation shaft insertion hole 150a.

  The flange portion 150s is a ring-shaped member having elasticity and fixed to the outer periphery of the disc portion 150r. The flange portion 150s is fitted and fixed to a groove portion formed on the outer periphery of the disc portion 150r. That is, the flow direction regulating member 15N is configured by a plate-like member whose outer peripheral portion has elasticity.

  As shown in FIG. 73, the flow direction restricting member 15N faces the axial direction with a gap from the rear axial end surface of the rotor 11 in a state where the rotary shaft 10 is inserted into the rotary shaft insertion hole 150a. Are arranged as follows. And it is being fixed to the center housing 130 with the volt | bolt penetrated to the volt | bolt penetration hole 150b. The flow direction regulating member 15N is set so that the opening 150d on the outer peripheral side of the gap 150c faces the coil end 121b and the space 121c in the radial direction.

  Next, effects of the motor generator according to the fourteenth embodiment will be described.

  According to the fourteenth embodiment, by having the same configuration as the first embodiment, the same effect corresponding to the same configuration can be obtained.

  As the rotational speed of the rotor 11 increases, the flow rate of the refrigerant 14 in the gap 150c increases. Therefore, the negative pressure generated by the venturi effect increases. According to the fourteenth embodiment, the flow direction regulating member 15N is configured by a plate-like member in which the flange portion 150s that is the outer peripheral portion has elasticity. Therefore, the flow direction restricting member 15N is gradually deformed as the rotational speed of the rotor 11 increases and the flange portion 150s is displaced to the front side, which is the rotor side, as shown in FIG. That is, the size of the opening 150d of the gap 150c is reduced, and the flow rate of the refrigerant 14 in the gap 150c is increased. Therefore, the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 can be gradually increased as the rotational speed of the rotor 11 increases.

(Fifteenth embodiment)
Next, a motor generator according to a fifteenth embodiment will be described. In the motor generator of the fifteenth embodiment, the rear flow direction regulating member is moved in the axial direction by an actuator relative to the motor generator of the twelfth embodiment.

  The motor generator of the fifteenth embodiment is the same as the motor generator of the twelfth embodiment except for the actuator. Therefore, only the configuration around the rear flow direction regulating member will be described with reference to FIG. 78, and the description of the operation and the refrigerant flow will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 78 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the twelfth embodiment are omitted from the description except where the same reference numerals are required.

  A motor generator 1P shown in FIG. 78 includes an actuator 19 that moves the flow direction regulating member 15L in the axial direction. The actuator 19 is fixed to the center housing 130. The tip of the movable shaft of the actuator 19 is fixed to the flow direction regulating member 15L.

  Next, effects of the motor generator of the fifteenth embodiment will be described.

  According to the fifteenth embodiment, by having the same configuration as that of the twelfth embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the fifteenth embodiment, the actuator 19 can move the flow direction regulating member 15L in the axial direction by a necessary amount as necessary. Therefore, the discharge capacity of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 can be adjusted appropriately.

  In the first to fifteenth embodiments, the lower side of the axis of the rotary shaft 10 is immersed in the refrigerant 14, and as a result, the gap portion formed by the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12. Of these, an example is given in which the refrigerant 14 flows into the lower half, but is not limited thereto. It is sufficient that the refrigerant flows into at least a part between the outer peripheral surface of the rotor and the inner peripheral surface of the stator.

  In the eleventh embodiment, an example is given in which the flow direction regulating member 15K is fixed to the rotary shaft 10, but the present invention is not limited to this. The flow direction regulating member may be fixed to the rotor 11.

  In the fourteenth embodiment, an example in which the flange portion 150s, which is the outer peripheral portion of the flow direction regulating member 15N, is configured by a plate member having elasticity, is not limited thereto. The flow direction restricting member may be configured by a member having elasticity as a whole. It suffices that at least the outer peripheral portion is made of an elastic member.

  In addition, the configurations of the first to fifteenth embodiments may be used alone or in combination.

(Sixteenth embodiment)
Next, a motor generator according to a sixteenth embodiment will be described. The motor generator according to the sixteenth embodiment is obtained by changing the configuration around the rear flow direction regulating member with respect to the motor generator according to the first embodiment.

  The motor generator of the sixteenth embodiment is the same as the motor generator of the first embodiment except for the configuration around the rear flow direction regulating member. Therefore, only the configuration of the rear flow direction regulating member will be described with reference to FIGS. 79 to 81, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. 79 and 80 are indicated by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The motor generator 1Q shown in FIGS. 79 to 81 includes a shielding member 122. The shielding member 122 is an arc-shaped member made of a metal, a resin, a composite material thereof, or the like that shields the scattering of the refrigerant 14 that is generated in the radially outward direction as the rotor 11 rotates. The shielding member 122 is disposed so as to face the outer side in the radial direction with a space from the outer peripheral surface of the coil end portion 121b not immersed in the refrigerant 14. It arrange | positions so that the outer peripheral surface of the coil end part 121b which is not immersed in the refrigerant | coolant 14 may be covered.

  The center housing 130 includes a main body portion 130a, a support portion 130b, and a fixing portion 130c.

  The main body 130 a is a cylindrical part that houses the rotor 11 and the stator 12.

  The support portion 130b is a cylindrical portion that rotatably supports the rear end portion of the rotary shaft 10 on the rear side of the flow direction regulating member 15Q. The outer peripheral surface of the support portion 130b has a tapered shape that is inclined toward the axial center toward the front side that is the rotor side. The lower part of the support part 130b is fixed to the main body part 130a via a fixing part 130c.

  The flow direction regulating member 15Q is the same member as the flow direction regulating member 15A of the first embodiment. The flow direction regulating member 15Q includes a wall portion 150t. The wall 150t is a part that prevents the refrigerant 14 on the rear side of the flow direction regulating member 15Q from flowing into the gap 150c. The flow direction regulating member 15Q is fixed to the front end face of the support portion 130a and is provided so as to face the coil end portion 121b that is always stationary at a distance from each other in the radial direction. As a result, a second gap 150u is formed between the coil end portion 121b and the one end in the axial direction of the flow direction regulating member 15Q and the other end in the axial direction. The flow direction regulating member 15Q is provided such that the interval d2 of the second gap 150u is smaller than the interval d1 of the gap 150c. The flow direction regulating member 15Q is provided such that at least a part of the rotor 11 is immersed in the refrigerant 14 in a state where the rotor 11 is not rotating.

  The motor generator 1Q includes a refrigerant return unit 133. The refrigerant return part 133 is a part that returns the refrigerant 14 scattered toward the radially outer side with the rotation of the rotor 11 to the storage part 134 a of the refrigerant 14. The refrigerant return part 133 is formed by the support part 130b and the flow direction regulating member 15Q. Specifically, it is formed by the support part 130b and the wall part 150t.

  Next, effects of the motor generator of the sixteenth embodiment will be described.

  According to the sixteenth embodiment, by having the same configuration as that of the first embodiment, a similar effect corresponding to the same configuration can be obtained.

  According to the sixteenth embodiment, at least a part of the flow direction regulating member 15Q is immersed in the refrigerant when the rotor 11 is not rotating. Therefore, when the rotor 11 rotates, a negative pressure due to the Venturi effect is immediately generated. Accordingly, the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 is also immediately discharged. Thereby, the loss accompanying the shear force of the refrigerant | coolant 14 currently flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 can be reduced rapidly.

  According to the sixteenth embodiment, the flow direction regulating member 15Q is provided to be opposed to the coil end portion 121b, which is a predetermined member that is always stationary, with a gap therebetween in the radial direction, and the gap is smaller than the gap portion 150c. A second gap 150u is formed. Therefore, not only the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 due to the negative pressure due to the venturi effect, but also the refrigerant 14 flowing into the second gap 150u. Discharged. As a result, since the amount of the refrigerant 14 in the gap 150c is further suppressed, the stirring loss of the refrigerant 14 can be further reduced.

  According to the sixteenth embodiment, the flow direction regulating member 15Q has the wall portion 150t that prevents the refrigerant 14 on the rear side, which is the counter-rotor side of the flow direction regulating member 15Q, from flowing into the gap portion 150c. Yes. Therefore, the refrigerant 14 that returns to the gap 150c can be suppressed. Therefore, the situation where the refrigerant 14 returns to the gap 150c and the negative pressure due to the venturi effect decreases can be suppressed.

  The refrigerant 14 scattered toward the radially outer side with the rotation of the rotor 11 is shielded by the shielding member 122 through the space 121c formed in the coil end portion 121b. The shielded refrigerant 14 is discharged to the rear side of the coil end portion 121b while being applied to the coil end portion 121b. According to the sixteenth embodiment, the refrigerant return unit 133 that returns the refrigerant 14 scattered toward the outside in the radial direction as the rotor 11 rotates to the storage unit 134 a of the refrigerant 14 is provided. Therefore, the refrigerant 14 scattered with the rotation of the rotor 11 can be reliably returned to the storage part 134a. Therefore, a sufficient amount of the refrigerant 14 required for cooling can always be secured in the storage part 134a. Thereby, the fall of cooling performance can be suppressed.

  According to the sixteenth embodiment, the housing 13 has the support portion 130b for supporting the rotary shaft 10 on the rear side that is the counter-rotor side of the flow direction regulating member 15Q. The outer peripheral surface of the support portion 130b is inclined toward the axial center toward the front side, which is the rotor side. The refrigerant return part 133 is formed by the support part 130b and the flow direction regulating member 15Q. The refrigerant return portion 133 can be reliably configured by the outer peripheral surface of the support portion 130b and the flow direction regulating member 15Q. And since the outer peripheral surface of the support part 130b inclines, the scattered refrigerant | coolant 14 can be collected reliably. Therefore, a sufficient amount of the refrigerant 14 required for cooling can always be secured in the storage part 134a.

  The refrigerant 14 scattered toward the outside in the radial direction with the rotation of the rotor 11 passes through the space portion 121c formed in the coil end portion 121b and is scattered to the outside in the radial direction of the coil end portion 121b. According to the sixteenth embodiment, the shielding member 122 is provided on the radially outer side of the axial end portion of the stator 12 so as to block the scattering of the refrigerant 14 that is generated in the radially outward direction as the rotor 11 rotates. Yes. Therefore, the refrigerant 14 shielded by the shielding member 122 is applied to the axial end portion of the stator 12. Therefore, the axial end of the stator 12, that is, the coil end 121b of the stator coil 121 can be further cooled.

  In the sixteenth embodiment, the flow direction regulating member 15Q is provided so as to be opposed to the coil end portion 121b in the radial direction with a gap therebetween, thereby forming a second gap portion 150u having a gap smaller than the gap portion 150c. However, this is not a limitation. The flow direction regulating member may be provided so as to be opposed to the predetermined member that is always in a stationary state in the radial direction with a gap therebetween, and may form a second gap portion that is smaller than the gap portion.

  In the sixteenth embodiment, the configuration around the rear flow direction regulating member is changed with respect to the motor generator of the first embodiment. However, the configuration is not limited thereto. You may apply to the motor generator of 2nd-15th embodiment.

(17th Embodiment)
Next, a motor generator according to a seventeenth embodiment will be described. The motor generator of the seventeenth embodiment is configured such that the flow direction regulating member is composed of a plurality of members with respect to the motor generator of the ninth embodiment.

  The motor generator of the seventeenth embodiment is the same as the motor generator of the ninth embodiment except for the configuration of the flow direction regulating member. Therefore, only the configuration of the flow direction regulating member will be described with reference to FIG. 82, and the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 82 is indicated by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those of the ninth embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 82, the flow direction restricting member 15R of the motor generator 1R includes a disk member 150v and a cylindrical member 150w. That is, it is configured by combining a plurality of members.

  The disk member 150v is a disk-shaped member made of metal, resin, or a composite material thereof. The cylindrical member 150w is a cylindrical member made of metal, resin, or a composite material thereof. The cylindrical member 150w is fixed to the disk member 150v in a state where the inner peripheral surface of the end portion in the axial direction is in close contact with the outer peripheral surface of the disk member 150v.

  Next, effects of the motor generator according to the seventeenth embodiment will be described.

  According to the seventeenth embodiment, by having the same configuration as that of the ninth embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the seventeenth embodiment, the flow direction regulating member 15R is configured by combining a plurality of members. Specifically, it is composed of a disk member 150v and a cylindrical member 150w. Therefore, even a complicated shape can be configured relatively easily.

  In the seventeenth embodiment, an example is described in which the flow direction regulating member is configured by a plurality of members with respect to the motor generator of the ninth embodiment, but is not limited thereto. The first to sixteenth embodiments may be applied to the motor generator.

(Eighteenth embodiment)
Next, a motor generator according to an eighteenth embodiment will be described. The motor generator of the eighteenth embodiment is obtained by adding a power transmission device to the motor generator of the first embodiment and changing the configuration of the housing accordingly.

  The motor generator of the eighteenth embodiment is the same as the motor generator of the first embodiment except for the configuration of the power transmission device and the housing. Therefore, only the configuration of the power transmission device and the housing will be described with reference to FIG. 83, and only the power transmission device is added, and thus the description of the operation will be omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 83 is indicated by a solid line for easy understanding of the configuration because the refrigerant is in a liquid state. Furthermore, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 83, the motor generator 1S includes a rotating shaft 10, a rotor 11, a stator 12, a housing 13, a refrigerant 14, and flow direction regulating members 15A and 16A. Furthermore, the power transmission device 20 is provided.

  The power transmission device 20 is a device that outputs the power transmitted through the rotary shaft 10 from the output shaft 200. For example, it is a device comprising a transmission or the like having gears.

  The housing 13 is a member that covers both axial end surfaces of the stator 12 and rotatably supports the rotary shaft 10. Moreover, it is a member which accommodates the power transmission device 20 and supports the output shaft 200 rotatably. The housing 13 includes a center housing 135, a first front housing 136, a rear housing 137, and a second front housing 138.

  The center housing 135 is a cylindrical member made of metal that accommodates the rotor 11 and the stator 12 and rotatably supports the rear end of the rotating shaft 10. The rotor 11 and the stator 12 are accommodated in the center housing 135. The outer peripheral surface of the stator core 120 is fixed to the inner peripheral surface of the center housing 135. The rear end of the rotary shaft 10 is rotatably supported by the center housing 135 via a bearing.

  The first front housing 136 is a cylindrical member made of metal that covers the front opening of the center housing 135 and rotatably supports the front end of the rotary shaft 10. The first front housing 136 is fixed to the center housing 135 so as to cover the opening on the front side of the center housing 135. The front end of the rotating shaft 10 is rotatably supported by the first front housing 136 via a bearing.

  The rear housing 137 is a disk-shaped member made of metal that covers the rear opening of the center housing 135. The rear housing 137 is fixed to the center housing 135 so as to cover the opening on the rear side of the center housing 135.

  The second front housing 138 is a bottomed cylindrical member made of metal that is provided so as to cover the front side of the first front housing 136, accommodates the power transmission device 20, and rotatably supports the output shaft. The power transmission device 20 is accommodated in the second front housing 138 in a state where the power transmission device 20 is connected to the front end portion of the rotary shaft 10. The output shaft 200 is rotatably supported by the second front housing 138 via a bearing.

  In the upper part of the first front housing 136, there is formed a refrigerant flow path 136a through which the refrigerant 14 scattered with the rotation of the power transmission device 20 flows backward. The refrigerant flow path 136a has an opening 136b at a position facing the front coil end portion 121b in the radial direction. A part of the refrigerant 14 flowing through the refrigerant flow path 136a flows down from the opening 136b, and cools the coil end portion 121b on the front side.

  In the upper part of the center housing 135, there is formed a refrigerant channel 135a through which the refrigerant 14 that has flowed through the refrigerant channel 136a flows further rearward. The coolant channel 135a has an opening 135b at a position facing the coil end portion 121b on the rear side in the radial direction. The refrigerant 14 flowing from the refrigerant flow path 135a flows down from the opening 136b and cools the coil end portion 121b on the rear side.

  In the lower part of the first front housing 136, a first storage part 134b for storing the refrigerant 14 in which the rotor 11 and the stator 12 are immersed, and a second storage part for storing the refrigerant 14 in which the power transmission device 20 is immersed. A through-hole portion 136c through which the refrigerant 14 moves back and forth is formed. Even though the refrigerant 14 flows from the power transmission device 20 side to the rotor 11 and the stator 12 side through the refrigerant flow paths 136a and 135a, the through hole portion 136c is formed by the first reservoir 134b and the second reservoir 134c. The liquid level is set so as to be balanced. The amount of refrigerant 14 that has flowed from the power transmission device 20 side to the rotor 11 and stator 12 side is set to a size that can be immediately returned from the rotor 11 and stator 12 side to the power transmission device 20 side. .

  The refrigerant 14 is a liquid substance that is injected into the space covered by the housing 13 and cools the rotor 11, the stator 12, and the power transmission device 20. Further, it is a substance that also acts as a lubricant for the power transmission device 20. Specifically, it is oil. The refrigerant 14 flows between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 in a state where the rotating shaft 10, the rotor 11, and the power transmission device 20 are stationary, and the power transmission device 20. The lower part is injected to a height at which it is immersed in the refrigerant 14.

  Next, the flow of the refrigerant will be described. The motor generator of the eighteenth embodiment is the same as the motor generator of the first embodiment except for the configuration of the power transmission device and the housing. Therefore, only the flow of the refrigerant accompanying the rotation of the power transmission device will be described with reference to FIG. 83, and the description of the flow of the refrigerant accompanying the rotation of the rotor will be omitted.

  When the power transmission device 20 rotates, the refrigerant 14 stored in the second storage part 134c scatters radially outward. The refrigerant 14 scattered to the outside in the radial direction with the rotation of the power transmission device 20 flows through the refrigerant flow path 136a and flows down from the opening 136b. Furthermore, it flows through the refrigerant flow path 135a and flows down from the opening 135b. Then, the front and rear coil end portions 121 are cooled and stored in the first storage portion 134b. That is, when the power transmission device 20 rotates, the refrigerant 14 stored in the second storage portion 134c on the power transmission device 20 side flows into the first storage portion 134b on the rotor 11 and stator 12 side. Become.

  Next, effects of the motor generator of the eighteenth embodiment will be described.

  According to the eighteenth embodiment, by having the same configuration as that of the first embodiment, a similar effect corresponding to the same configuration can be obtained.

  According to the eighteenth embodiment, the housing is accommodated in the housing, a part thereof is immersed in the refrigerant, the output shaft is rotatably supported by the housing, and the power transmitted via the rotating shaft is output from the output shaft. It has a power transmission device. Therefore, even when the power transmission device 20 is provided, it is possible to reduce the loss due to the shearing force of the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12. In addition, the cooling capacity of the coil end portion 121b can be improved by the refrigerant 14 discharged from between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12. Furthermore, since the amount of the refrigerant 14 in the gap 150c is limited as the rotation of the rotor 11 is increased, the stirring loss of the refrigerant 14 due to the rotation increase of the rotor 11 can be suppressed.

  According to the eighteenth embodiment, the refrigerant 14 also functions as a lubricant for the power transmission device 20. Therefore, the power transmission device 20 can be lubricated by the refrigerant 14.

(Nineteenth embodiment)
Next, a motor generator according to a nineteenth embodiment will be described. The motor generator according to the nineteenth embodiment is obtained by adding a liquid level height adjusting unit that adjusts the liquid level height of the refrigerant to the motor generator according to the eighteenth embodiment.

  The motor generator of the nineteenth embodiment is the same as the motor generator of the eighteenth embodiment except for the liquid level height adjusting unit. Therefore, only the configuration of the liquid level adjustment unit will be described with reference to FIG. 84, and the description of the operation will be omitted. The description of the flow of the refrigerant accompanying the rotation of the power transmission device is also omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 84 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the eighteenth embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 84, motor generator 1T partitions first reservoir 134b and second reservoir 134c, and stores refrigerant 14 stored in first reservoir 134b and refrigerant stored in second reservoir 134c. The liquid level adjustment part 139a which adjusts the height of 14 liquid levels is provided. The liquid level adjustment part 139a adjusts so that the liquid level of the refrigerant | coolant 14 of the 1st storage part 134b and the 2nd storage part 134c may differ. The amount of the refrigerant 14 that flows from the power transmission device 20 side to the rotor 11 and the stator 12 via the refrigerant flow paths 136a and 135a increases as the rotational speed of the output shaft 200 of the power transmission device 20 increases. The liquid level adjustment unit 139a adjusts the liquid level of the refrigerant 14 in the first storage unit 134b to be constant regardless of the rotational speed of the power transmission device 20.

  The liquid level adjustment part 139a is provided in the lower part of the 1st front housing 136 so that the through-hole part 136c may be interrupted | blocked, and the wall part which blocks the flow of the refrigerant | coolant 14 from the 1st storage part 134b to the 2nd storage part 134c 139b.

  The wall 139b makes the level of the refrigerant 14 in the first reservoir 134b higher than the level of the refrigerant 14 in the second reservoir 134c, and the refrigerant regardless of the rotational speed of the power transmission device 20. The liquid level of 14 is adjusted to be constant.

  Next, the effect of the motor generator of the nineteenth embodiment will be described.

  According to the nineteenth embodiment, by having the same configuration as that of the eighteenth embodiment, the same effect corresponding to the same configuration can be obtained.

  When the lubrication of the power transmission device 20 is promoted by the refrigerant 14 and the stator 12 is cooled, the liquid level of the refrigerant is appropriate. According to the nineteenth embodiment, the motor generator 1T stores the first reservoir 134b that stores the refrigerant 14 in which the rotor 11 and the stator 12 are immersed, and the refrigerant 14 in which the power transmission device 20 is immersed. 2 storage part 134c. Further, the first reservoir 134b and the second reservoir 134c are partitioned, and the liquid level of the refrigerant 14 stored in the first reservoir 134b and the refrigerant 14 stored in the second reservoir 134c is adjusted. A liquid level height adjusting unit 139a is provided. Therefore, the liquid level of the refrigerant 14 can be adjusted appropriately. Therefore, the lubrication effect of the power transmission device 20 and the cooling effect of the stator 12 can be efficiently balanced.

  When the lubrication of the power transmission device 20 is promoted by the refrigerant and the stator 12 is cooled, the liquid level of the refrigerant 14 required for the power transmission device 20 and the stator 12 is different. According to the nineteenth embodiment, the liquid level adjustment unit 139a adjusts the liquid level of the refrigerant 14 in the first storage unit 134b and the second storage unit 134c to be different. Therefore, the lubrication effect of the power transmission device 20 and the cooling effect of the stator 12 can be efficiently compatible.

  According to the nineteenth embodiment, the liquid level adjustment unit 139a adjusts the liquid level of the refrigerant 14 in the first storage unit 134b to be constant regardless of the rotational speed. Therefore, it is possible to sufficiently secure the refrigerant 14 that cools the stator 12 regardless of the rotational speed. Therefore, the stator 12 can be reliably cooled even if the rotational speed changes.

(20th embodiment)
Next, a motor generator according to a twentieth embodiment will be described. In the motor generator of the twentieth embodiment, the liquid level adjustment part of the motor generator of the nineteenth embodiment makes the liquid level of the refrigerant constant regardless of the rotational speed, whereas The configuration is changed so that the height is changed in accordance with the rotational speed.

  The motor generator of the twentieth embodiment is the same as the motor generator of the nineteenth embodiment except for the configuration of the liquid level height adjusting unit. Therefore, only the configuration of the liquid level adjustment unit will be described with reference to FIG. 85, and the description of the operation will be omitted. The description of the flow of the refrigerant accompanying the rotation of the power transmission device is also omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. In addition, the portion immersed in the refrigerant in FIG. 85 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the nineteenth embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 85, motor generator 1U partitions first reservoir 134b and second reservoir 134c, and stores refrigerant 14 stored in first reservoir 134b and refrigerant stored in second reservoir 134c. The liquid level adjustment part 139c which adjusts the height of 14 liquid levels is provided. The liquid level adjustment part 139c adjusts so that the height of the liquid level of the refrigerant | coolant 14 may change according to the rotation speed of the power transmission device 20. FIG. Specifically, the liquid level of the refrigerant 14 in the first storage part 134b is adjusted to be higher than the liquid level of the refrigerant 14 in the second storage part 134c. Further, as the rotational speed of the power transmission device 20 increases, the liquid level of the refrigerant 14 in the first storage part 134b increases and the liquid level of the refrigerant 14 in the second storage part 134c decreases. Adjust to.

  The liquid level height adjusting part 139c is provided at the lower part of the front housing 136 so as to block the through hole part 136c, and a wall part 139d for blocking the flow of the refrigerant 14 from the first storage part 134b to the second storage part 134c. And a through-hole portion 139e formed in the wall portion 139d. The amount of the refrigerant 14 that flows from the power transmission device 20 side to the rotor 11 and the stator 12 side through the refrigerant flow paths 136a and 135a increases as the number of rotations of the power transmission device 20 increases. Become. Therefore, when the amount of the refrigerant 14 flowing from the power transmission device 20 side to the rotor 11 and the stator 12 side increases, the amount of the refrigerant 14 on the power transmission device 20 side decreases. When the rotational speed of the power transmission device 20 is low, the through-hole portion 139e has a small amount of the refrigerant 14 that flows from the power transmission device 20 side to the rotor 11 and the stator 12 side, and the first through the through-hole portion 139e. Since the refrigerant 14 flows from the first reservoir 134b to the second reservoir 134c, the liquid level of the refrigerant 14 stored in the second reservoir 134c is less decreased. On the other hand, when the rotational speed is high, the amount of the refrigerant 14 that flows from the power transmission device 20 side to the rotor 11 and the stator 12 side is large, but the size of the through-hole portion 139e is constant. The amount of the refrigerant 14 flowing from the part 134b to the second storage part 134c does not increase extremely, and is set so as to greatly reduce the liquid level of the refrigerant 14 stored in the second storage part 134c. It is set to a predetermined size that cannot be immediately returned from the rotor 11 and stator 12 side to the power transmission device 20 side.

  The height of the liquid level of the refrigerant 14 in the first reservoir 134b is adjusted by the wall 139d to be higher than the level of the refrigerant 14 in the second reservoir 134c. When the rotational speed of the power transmission device 20 is increased by the through-hole portion 139e, the height of the liquid level of the refrigerant 14 in the first storage portion 134b increases and the height of the liquid level of the refrigerant 14 in the second storage portion 134c. Is adjusted to be low.

  Next, effects of the motor generator of the twentieth embodiment will be described.

  According to the twentieth embodiment, by having the same configuration as the nineteenth embodiment, the same effect corresponding to the same configuration can be obtained.

  When the rotational speed changes, the height of the liquid level of the refrigerant 14 required for lubricating the power transmission device 20 and the height of the liquid level of the refrigerant 14 required for cooling the stator 12 also change accordingly. According to the twentieth embodiment, the liquid level adjustment unit 139c adjusts the liquid level of the refrigerant 14 so as to change according to the rotational speed. Therefore, even if the liquid level of the refrigerant 14 required for the power transmission device 20 and the stator 12 changes with the change in the rotational speed, the lubrication effect of the power transmission device 20 and the cooling effect of the stator 12 are efficiently obtained. You can balance well.

(21st Embodiment)
Next, a motor generator according to a twenty-first embodiment will be described. In the motor generator of the twenty-first embodiment, the flow direction regulating member of the motor generator of the eighteenth embodiment is provided so as to face both end surfaces in the axial direction of the rotor. Of these, it is provided so as to face the axial end surface far from the power transmission device.

  The motor generator of the twenty-first embodiment is the same as the motor generator of the eighteenth embodiment except for the configuration of the flow direction regulating member. Therefore, only the configuration of the liquid level adjustment unit will be described with reference to FIG. 86, and the description of the operation will be omitted. The description of the flow of the refrigerant accompanying the rotation of the power transmission device is also omitted. In addition, the front-back direction and the up-down direction in the figure are described for convenience in order to distinguish the directions. Further, the portion immersed in the refrigerant in FIG. 86 is shown by a solid line for easy understanding of the configuration because the refrigerant is liquid. Furthermore, the same components as those in the eighteenth embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 86, the motor generator 1V has the same flow direction restricting member 15V as the flow direction restricting member 15A, similarly to the motor generator 1S of the eighteenth embodiment. However, unlike the motor generator 1S of the eighteenth embodiment, the flow direction restricting member 16A is not provided. That is, the flow direction regulating member 15 </ b> V of the motor generator 1 </ b> V is provided so as to face the axial end surface far from the power transmission device 20 among the axial end surfaces of the rotor 11.

  Next, effects of the motor generator according to the twenty-first embodiment will be described.

  According to the twenty-first embodiment, by having the same configuration as that of the eighteenth embodiment, the same effect corresponding to the same configuration can be obtained.

  According to the twenty-first embodiment, the flow direction regulating member 15 </ b> V is provided so as to face the axial end surface farther from the power transmission device 20 among the axial end surfaces of the rotor 11. Therefore, the refrigerant 14 flowing between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 only on the axial end surface side farther from the power transmission device 20 among the axial end surfaces of the rotor 11. Is discharged. Therefore, the refrigerant 14 passes from the axial end surface side closer to the power transmission device 20 through the space between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 12 to the axial end surface side farther from the power transmission device 20. Will flow. As a result, more refrigerant 14 is stored on the counter-rotor side of the flow direction regulating member 15V provided to face the axial end surface far from the power transmission device 20. Accordingly, it is possible to reliably cool the coil end portion 121b at the axial end of the stator 12 far from the power transmission device 20, which is difficult to cool by the refrigerant 14 scattered and flowing by the power transmission device 20. it can. Moreover, as a result of the height of the liquid level of the refrigerant 14 on the rear side that is the counter-rotor side of the flow direction regulating member 15V being increased, the liquid level of the refrigerant 14 on the side of the power transmission device 20 is decreased. Loss associated with the shearing force of the refrigerant can also be reduced.

  In the eighteenth to twenty-first embodiments, an example is given in which a change such as adding a power transmission device is added to the motor generator of the first embodiment. However, the present invention is not limited to this. Similar changes may be applied to the motor generators of the second to seventeenth embodiments.

  DESCRIPTION OF SYMBOLS 1A ... Motor generator, 10 ... Rotating shaft, 11 ... Rotor, 12 ... Stator, 120 ... Stator core, 121 ... Stator coil, 121b ... Coil end Part, 121c ... space part, 13 ... housing, 14 ... refrigerant, 15A ... flow direction regulating member

Claims (30)

A rotating shaft (10);
A rotor (11) fixed to the rotating shaft;
A stator (12) disposed so that an inner circumferential surface thereof is opposed to the outer circumferential surface of the rotor in a radial direction with a space therebetween;
A housing (13) that covers both axial end faces of the stator and rotatably supports the rotating shaft;
A liquid refrigerant (14) which is injected into a space covered by the housing and flows into at least a part between the outer peripheral surface of the rotor and the inner peripheral surface of the stator;
A flow direction regulating member that is provided so as to face the axial end surface of the rotor with a gap therebetween and that regulates the flow direction of the refrigerant by a gap formed between the axial end surface of the rotor and the rotor. (15A-15N, 15P-15R, 15V, 16A, 16I, 16K),
Rotating electric machine having The stator is
A stator core (120) disposed so that an inner peripheral surface thereof is opposed to the outer peripheral surface of the rotor in a radial direction with a space therebetween;
A stator coil (121) provided on the stator core and provided with a coil end portion protruding in an axial direction from an axial end surface of the stator core;
Have
The rotating electrical machine according to claim 1, wherein the opening (150d) of the gap (150c) faces the coil end portion in the radial direction.   3. The rotating electrical machine according to claim 2, wherein the opening of the gap is opposed to a space formed by an axial end surface of the stator core and the coil end in a radial direction.   The flow direction regulating member (15C, 15D, 15F, 15H, 15I, 15J, 16I) has a convex part (150e, 150g, 150j, 150l, 160l) and a concave part (150f, 150h, 150k) on the surface on the rotor side. , 150 m, 160 m). The rotating electrical machine according to claim 1.   The rotating electrical machine according to claim 4, wherein the convex portions (150j, 150l, 160l) extend in a circumferential direction.   The rotating electrical machine according to claim 5, wherein the convex portion (150j) extends in an arc shape in the circumferential direction.   The rotating electrical machine according to claim 5, wherein the convex portions (150l, 160l) extend in a ring shape in a circumferential direction.   The rotating electrical machine according to any one of claims 1 to 7, wherein the flow direction regulating member (15E, 15F) has a through hole portion (150i) penetrating in an axial direction.   The rotation according to any one of claims 1 to 8, wherein the flow direction regulating member (15G) has a coil end facing portion (152) facing the tip end portion of the coil end portion in the axial direction with a space therebetween. Electric.   The rotating electrical machine according to any one of claims 1 to 9, wherein the flow direction regulating member (15L, 15M) is provided so as to be movable in an axial direction.   The rotating electrical machine according to claim 10, further comprising a pressing member (18) for pressing the flow direction regulating member toward the side opposite to the rotor.   The rotating electrical machine according to claim 11, wherein the pressing member is a spring (180) or a rubber member (181).   The rotating electrical machine according to claim 10, further comprising an actuator (19) for moving the flow direction regulating member in the axial direction.   The rotating electrical machine according to any one of claims 1 to 9, wherein the flow direction regulating member (15N) is configured by a plate-like member having at least an outer peripheral portion having elasticity.   The flow direction regulating member (15A to 15j, 15L to 15N, 15P to 15R, 15V, 16A, 16I) is fixed to the stator or the housing, according to any one of claims 1 to 14. Rotating electric machine.   The rotating electrical machine according to any one of claims 1 to 14, wherein the flow direction regulating member (15K, 16K) is fixed to the rotating shaft or the rotor.   The rotating electrical machine according to any one of claims 1 to 16, wherein at least a part of the flow direction regulating member (15Q) is immersed in the refrigerant in a state where the rotor is not rotating.   The flow direction regulating member (15Q) is provided so as to be opposed to the predetermined member that is always in a stationary state in the radial direction with a gap therebetween, and forms a second gap portion (150u) that is smaller than the gap portion. The rotary electric machine of any one of Claims 1-17.   The flow direction regulating member (15Q) has a wall portion (150t) that prevents the refrigerant on the counter-rotor side of the flow direction regulating member from flowing into the gap portion. The rotating electrical machine according to the item.   The rotating electrical machine according to any one of claims 1 to 19, further comprising a refrigerant return portion (133) for returning the refrigerant scattered toward the radially outer side with the rotation of the rotor to the refrigerant storage portion. The housing has a support portion (130b) for supporting the rotating shaft, the outer peripheral surface of which is inclined toward the axial center toward the rotor side on the counter-rotor side of the flow direction regulating member. ,
The rotating electrical machine according to claim 20, wherein the refrigerant return portion is formed by the support portion and the flow direction regulating member.   The rotating electrical machine according to any one of claims 1 to 21, wherein the flow direction regulating member (15R) is configured by combining a plurality of members.   23. A shielding member (122) for blocking scattering of the refrigerant toward a radially outer side generated as the rotor rotates, on a radially outer side of an axial end portion of the stator. The rotating electrical machine according to item 1.   A power transmission device that is housed in the housing, partly immersed in the refrigerant, an output shaft that is rotatably supported by the housing, and that outputs power transmitted through the rotation shaft from the output shaft The rotating electrical machine according to any one of claims 1 to 23, which has (20). A first reservoir (134b) for storing the refrigerant in which the rotor and the stator are immersed;
A second reservoir (134c) for storing the refrigerant in which the power transmission device is immersed;
A liquid level that divides the first storage part and the second storage part and adjusts the height of the liquid level of the refrigerant stored in the first storage part and the refrigerant stored in the second storage part. A height adjuster (139a, 139c);
The rotating electrical machine according to claim 24, comprising:   The rotating electrical machine according to claim 25, wherein the liquid level adjustment unit adjusts the liquid level of the refrigerant in the first storage unit and the second storage unit to be different.   27. The rotating electrical machine according to claim 26, wherein the liquid level adjustment unit (139a) adjusts the liquid level of the refrigerant in the first storage unit to be constant regardless of the number of rotations.   27. The rotating electrical machine according to claim 26, wherein the liquid level adjustment unit (139c) adjusts the liquid level of the refrigerant to change according to the number of rotations.   The rotating electrical machine according to any one of claims 24 to 28, wherein the refrigerant also serves as a lubricant for a power transmission device.   30. The flow direction restricting member (15V) is provided so as to face an axial end surface far from the power transmission device among the axial end surfaces of the rotor. The rotating electrical machine described in 1.

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