JP2012023837A - Rotary machine and vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary machine which effectively suppresses temperature rise without complicating the machine and to provide a vehicle including the rotary machine.SOLUTION: A motor 1 includes a rotation shaft 20, a rotor 30 configured so as to be rotatable around the rotation shaft 20, a stator 40 provided around the rotor 30, a body member 11 disposed around the stator 40 to form a cooling chamber 14, to which oil OL is led, between the body member and the stator 40, and a cooling pipe 50 which is disposed in the cooling chamber 14 in a state contacting at least the stator 40, and circulates cooling water W cooling the stator 40 and the oil OL led to the cooling chamber 14.

Description

  The present invention relates to a rotating machine such as a generator or an electric motor, and a vehicle including the rotating machine.

  A rotating machine such as a generator or an electric motor includes a stator (stator) and a rotor (rotor). By rotating the rotor relative to the stator, rotational kinetic energy is converted into electric energy. It is a device that converts or converts electrical energy into rotational kinetic energy. A typical rotating machine provided in a vehicle is an alternator that is driven by an engine to generate electric power.

  In recent years, in order to realize a low-carbon society, a hybrid vehicle (HV: Hybrid Vehicle) that uses both an engine and a rotating machine as a power generation source, and an electric vehicle (EV: only that uses a rotating machine as a power generation source). Research and development of Electric Vehicle) is actively conducted. The rotating machines provided in these vehicles are used not only as electric motors for generating power but also as generators for recovering regenerative energy generated during deceleration.

  In such a rotating machine, cooling oil is often used for cooling the rotor and coil ends (coil ends of the stator), and cooling water is often used for cooling the stator. The cooling water is cooled using a radiator provided in the vehicle. On the other hand, since cooling oil has the property that heat conductivity is lower than cooling water, it is necessary to take a large heat transfer area and to cool actively.

  The following Patent Document 1 discloses a technique for separately providing an oil cooler to cool the cooling oil. Patent Document 2 below discloses a technique for cooling cooling oil by providing cooling fins in an oil reservoir. Patent Documents 3 to 5 below disclose techniques for cooling the stator by providing a spiral pipe or a meandering pipe around the stator and circulating the cooling water using these pipes.

JP 2002-142408 A JP-A-5-122903 Japanese Patent Laid-Open No. 7-1111759 Japanese Patent Laid-Open No. 2001-25211 US Pat. No. 5,859,482

  By the way, the rotary machine provided in the hybrid vehicle and electric vehicle mentioned above is miniaturized in order to reduce an in-vehicle space, and high output and high speed are achieved in order to improve running performance. Thus, as a result of the increase in the output density of the rotating machine, both the amount of heat generated from the rotor and the amount of heat generated from the coils provided in the stator are increased. The rise in temperature caused by these heat generations causes an increase in loss of the rotating machine and demagnetization of the magnet, and there is a problem that the performance of the rotating machine is deteriorated.

  Here, as with the oil cooler disclosed in Patent Document 1 described above, if a countermeasure is provided to separately provide an oil cooler having a high cooling capacity with respect to the cooling oil, even if the amount of heat generated by the rotating machine is increased, the rotation is performed. It is thought that the temperature rise of the machine can be prevented. Moreover, it is thought that the temperature rise of a rotary machine can also be prevented by taking the measure of increasing the number of cooling fins disclosed in Patent Document 2 described above in accordance with the increase in the amount of heat generated by the rotary machine. However, in order to take these measures, there is a problem that the apparatus becomes complicated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating machine capable of effectively suppressing a temperature rise without incurring complexity of the apparatus, and a vehicle including the rotating machine. And

In order to solve the above-described problems, a rotating machine according to the present invention includes a rotor (30) configured to be rotatable around a rotating shaft (20), and a stator (40) provided around the rotor. In a rotating machine (1) comprising: a cover member (11) which is disposed around the stator and forms a cooling chamber (14) between which the cooling oil (OL) is guided and the stator. ) And a cooling pipe (50) that circulates cooling water (W) that is disposed in the cooling chamber in contact with the stator and cools the stator and the cooling oil introduced into the cooling chamber. To 54).
The rotating machine of the present invention is characterized in that the cooling pipe is wound around the outer periphery of the stator in a spiral or meandering manner with a distance between adjacent pipe walls.
Further, in the rotating machine according to the present invention, in the pipe in which the cooling pipe is folded in half, one pipe (R1) is an outgoing path of the cooling water and the other pipe (R2) is a return path of the cooling water. A pipe that is spirally wound around the outer periphery of the stator so that the outgoing pipe and the return pipe of the cooling water are alternately arranged along the axial direction of the rotating shaft. It is a feature.
Moreover, the rotating machine of the present invention is characterized in that the cooling pipe is wound along the outer periphery of the stator so as to meander in the axial direction of the rotating shaft.
The rotating machine according to the present invention is characterized in that the cooling pipe is a pipe having a rectangular ring shape in cross section.
Moreover, the rotating machine of the present invention is characterized in that the cooling pipe is disposed in the cooling chamber in a state of being in contact with both the stator and the cover member.
The rotating machine according to the present invention is characterized in that the cooling oil through the cooling chamber is used for at least one of cooling and lubrication of the rotor.
A vehicle according to the present invention includes a rotating machine (1) according to any one of the above, and a radiator (62) that cools cooling water (W) circulating through the cooling pipes (50 to 54) provided in the rotating machine. And a supply part (63) for supplying cooling oil (OL) through the cooling chamber of the rotating machine.

  According to the present invention, a cooling chamber that is a space through which cooling oil to be cooled is guided is formed between the cover member and the stator, and at least the cooling pipe is disposed in the cooling chamber in contact with the stator. Since the cooling oil and the stator are cooled by the cooling water circulating through the cooling pipe, there is an effect that the temperature rise can be effectively suppressed without complicating the entire apparatus including the rotating machine.

It is a sectional side view which shows the structure of the motor as a rotary machine by one Embodiment of this invention. It is a perspective view explaining the structure of the cooling piping provided in the motor. It is side surface perspective drawing explaining the 1st modification of the cooling piping provided in the motor. It is a figure for demonstrating the 2nd modification of the cooling piping provided in the motor. It is a sectional side view explaining the 3rd modification of cooling piping provided in the motor. It is a figure for demonstrating the 2nd modification of the cooling piping provided in the motor. It is a block diagram which shows the principal part structure of the vehicle by one Embodiment of this invention.

  Hereinafter, a rotating machine and a vehicle according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, a case where the rotating machine is a motor (electric motor) that is rotationally driven by an externally supplied current (for example, a three-phase alternating current) will be described as an example.

[Rotating machine]
FIG. 1 is a side sectional view showing a configuration of a motor as a rotating machine according to an embodiment of the present invention. As shown in FIG. 1, the motor 1 includes a housing 10, a rotating shaft 20, a rotor 30 (rotor), and a stator 40 (stator). The current between the rotor 30 and the stator 40 is supplied by an electric current supplied from the outside. Electromagnetic force acts between them, and the rotor 30 rotates around the rotating shaft 20, so that the rotating shaft 20 is driven to rotate. In the following, the left-right direction in FIG. 1 is referred to as the “axial direction” of the rotating shaft 20.

  The housing 10 includes a body member 11 (cover member), a left side wall member 12, and a right side wall member 13, and houses a part of the rotary shaft 20, the rotor 30, the stator 40, and the like therein. The body member 11 is formed of an iron alloy or the like, and is a cylindrical member that is open at both ends in the axial direction. The body member 11 is provided with a left wall member 12 and a right side wall so as to form a cooling chamber 14 which is a space through which oil OL (cooling oil) to be cooled is guided between the body member 11 and the stator 40 disposed on the inner peripheral surface side. The wall member 13 is thinner than the wall member 13. As the oil OL, for example, automatic transmission fluid (ATF) can be used.

  The left side wall member 12 and the right side wall member 13 are substantially disk-shaped members formed of an iron alloy or the like, and the outer diameter thereof is set to be approximately the same as the outer diameter of the body member 11. The left opening part and the right opening part are respectively attached so as to be closed. In the central portions of the left side wall member 12 and the right side wall member 13, circular hole portions into which bearings 15 and 16 that support the rotating shaft 20 are inserted are formed.

  The rotary shaft 20 is an annular rod-like member in which an oil passage 21 is formed along the central axis, and protrudes from the left wall member 12 to the left in the axial direction, and protrudes from the right wall member 13 to the right in the axial direction. In this state, the bearings 15 and 16 are supported so as to be rotatable around the central axis. The oil flow path 21 formed in the rotating shaft 20 is a flow path formed for cooling the rotating shaft 20 and the rotor 30, and the cooled oil OL is guided through the cooling chamber 14 described above. A portion protruding from the housing 10 on the left side in the axial direction or the right side in the axial direction is connected to a drive shaft of the vehicle, for example. On the other hand, a rotor 30 is attached to a portion of the rotary shaft 20 accommodated in the housing 10.

  The rotor 30 includes a rotor core 31, a permanent magnet 32, and an end plate 33. The rotor 30 is attached to the rotating shaft 20 and is configured to be rotatable around the rotating shaft 20. The rotor core 31 is a cylindrical member configured by laminating a plurality of electromagnetic steel plates as plate members made of a magnetic material. The outer diameter of the rotor core 31 is set so that an annular gap (air gap) is formed between the outer peripheral surface of the rotor core 31 and the inner peripheral surface of the stator 40 (stator core 41).

  The permanent magnets 32 are rectangular parallelepiped magnets extending in the axial direction, and a plurality of (for example, eight) permanent magnets 32 are embedded in the vicinity of the rotor core 31 near the stator 40 along the outer periphery of the rotor core 31. Specifically, through holes extending in the axial direction are formed in the rotor core 31 at regular intervals along the outer periphery, and the permanent magnets 32 are housed and fixed in these through holes. The permanent magnet 32 is housed and fixed in the through hole so that an alternating magnetic field is formed along the outer periphery of the rotor core 31.

  The end plate 33 is a disk-shaped member provided at both ends of the rotor core 31 in the axial direction (lamination direction of electromagnetic steel sheets). The end plate 33 has an outer diameter set to be the same as the outer diameter of the rotor core 31 and sandwiches the rotor core 31 in the axial direction. The end plate 33 is configured to have a flow path that communicates with the oil flow path 21 formed on the rotary shaft 20 and that guides the oil OL guided to the oil flow path 21 to the vicinity of the rotor core 31 and the permanent magnet 32. Also good. With this configuration, the rotor core 31 and the permanent magnet 32 can be efficiently cooled.

  Further, the end plate 33 is extended to the vicinity of the bearings 15 and 16, the oil OL guided to the rotor core 31 and the permanent magnet 32 is guided to the bearings 15 and 16, and the bearings 15 and 16 are made of oil OL. You may make it the structure which lubricates. By adopting such a configuration, the heat OL is removed from the rotor core 31 and the permanent magnet 32, and the oil OL whose viscosity is lowered is supplied to the bearings 15 and 16 as lubricating oil. Thus, the mechanical loss can be reduced and the motor 1 can be highly efficient.

  The stator 40 includes a stator core 41 and a coil 42, and is fixed to the inner peripheral surface side of the housing 10 described above. The stator core 41 is an annular member configured by laminating a plurality of electromagnetic steel plates as plate members made of a magnetic material, similarly to the rotor core 31 described above, and between the inner peripheral surface and the outer peripheral surface of the rotor core 31. In addition to the air gap described above, the cooling chamber 14 described above is formed between the outer peripheral surface of the air gap and the inner peripheral surface of the body member 11 of the housing 10. An annular seal member 43 formed of epoxy resin or the like is provided at both ends of the stator core 41, and the cooling chamber 14 is sealed by the seal member 43.

  The coil 42 is inserted into a slot (not shown) formed in the stator core 41, and forms a magnetic pole corresponding to a current supplied from the outside. Here, among the three-phase alternating currents, the coil 42 includes a first coil supplied with a U-phase current, a second coil supplied with a V-phase current, and a third coil supplied with a W-phase current. Thus, these first to third coils are sequentially arranged in the circumferential direction of the stator core 41. Here, the portion of the coil 42 shown in FIG. 1 (the portion protruding axially from the stator core 41) is a coil end portion (coil end) 42a. It is desirable that the oil OL cooled through the cooling chamber 14 described above is guided to the coil end 42a to cool the coil end 42a.

  The motor 1 shown in FIG. 1 includes a cylindrical stator seal 44 that is disposed in an air gap formed between the outer peripheral surface of the rotor core 31 and the inner peripheral surface of the stator core 41 and is formed of resin or the like. . The stator seal 44 separates the space in which the rotor 30 is disposed in the housing 10 and the space in which the stator 40 is disposed in the housing 10.

  Here, the body member 11 forming a part of the housing 10 described above is provided with oil pipes 11 a and 11 b communicating with the cooling chamber 14. The oil OL to be cooled is guided to the cooling chamber 14 through, for example, the oil pipe 11a and is discharged to the outside from the cooling chamber 14 through the oil pipe 11b. A cooling pipe 50 is disposed inside the cooling chamber 14 in contact with the outer peripheral surface of the stator core 41. The cooling pipe 50 is a pipe having a circular cross section formed by a metal having high thermal conductivity such as copper (Cu) or aluminum (Al), and is led into the stator core 41 and the cooling chamber 14. This is a pipe for circulating the cooling water W for cooling the oil OL. Both end portions 50 a and 50 b of the cooling pipe 50 are led to the outside through through holes formed in the body member 11.

  2A and 2B are perspective views for explaining a configuration of a cooling pipe provided in the motor. FIG. 2A is a side perspective view of the cooling pipe, and FIG. 2B is a front perspective view of the cooling pipe. In FIG. 2, illustration of a part of the housing 10, the rotating shaft 20, and the rotor 30 is omitted for easy understanding. Further, the dimensions of the stator 40 are changed, and some members are shown in cross-sectional views.

  As shown in FIG. 2, the cooling pipe 50 is spirally wound over the entire outer periphery of the stator core 41 with an interval in the axial direction. As described above, the cooling pipe 50 is wound at an interval to increase the contact area (heat transfer area) with the oil OL guided to the cooling chamber 14, thereby increasing the cooling efficiency of the oil OL. Because. How much interval is set is appropriately set according to the ability to cool the oil OL and the ability to cool the stator core 41.

  Next, the operation of the motor 1 in the above configuration will be briefly described. When three-phase alternating current from the outside is supplied to the motor 1, the current of each phase of the three-phase alternating current flows through the coils 42 (first to third coils) provided in the stator 40. Then, a rotating magnetic field is formed along the rotation direction of the rotor 30 according to the supplied current. Then, the rotor core 31 in which an alternating magnetic field is formed along the outer periphery interacts with this rotating magnetic field, and the rotor 30 is rotated by generating an attractive force and a repulsive force, whereby the rotating shaft 20 is rotationally driven. When the current is supplied to the coil 42 and the rotor 30 rotates, the coil 42 provided on the stator 40 and the permanent magnet 32 provided on the rotor 30 generate heat.

  On the other hand, when the motor 1 is driven, oil OL is guided from the oil pipe 11a to the cooling chamber 14 by an oil pump (not shown), and cooling water W is guided from one end 50a to the cooling pipe 50 by a pump (not shown). It is burned. When the cooling water W is guided to the cooling pipe 50, the stator core 41 with which the cooling pipe 50 contacts the outer peripheral surface is cooled, and the oil OL that is guided to the cooling chamber 14 and contacts the cooling pipe 50 is cooled.

  The cooling water W through the cooling pipe 50 is discharged to the outside from the other end portion 50b, and after being cooled by a cooling device such as a radiator, is guided to the cooling pipe 50 from the one end portion 50a again. On the other hand, the oil OL that has been led to the cooling chamber 14 and cooled is discharged to the outside from the oil pipe 11b and led to, for example, the oil flow path 21, the coil end 42a, the bearings 15 and 16, and the motor 1. Used for cooling and lubrication.

  As described above, in the present embodiment, the cooling chamber 14 is formed between the body member 11 of the housing 10 and the stator core 41 and the oil to be cooled is guided, and is cooled by being wound around the outer periphery of the stator core 41. A cooling pipe 50 that circulates the water W is disposed in the cooling chamber 14, and the oil OL and the stator core 41 are cooled by the cooling water W that circulates through the cooling pipe 50. Thus, since the motor 1 of this embodiment is a structure which also has an oil cooler, it can suppress the temperature rise of the motor 1 effectively, without causing complication of the whole apparatus provided with the motor 1. FIG. .

  Next, a modification of the cooling pipe provided in the motor 1 will be described. In the drawings used for the description of each modification described below, the same members as those shown in FIG. 2 are denoted by the same reference numerals, and a part of the housing 10, the rotating shaft 20, and The illustration of the rotor 30 is omitted. Further, the dimensions of the stator 40 are changed, and some members are shown in cross-sectional views.

  FIG. 3 is a side perspective view illustrating a first modification of the cooling pipe provided in the motor. The cooling pipe 51 according to the first modification shown in FIG. 3 is spirally wound around the entire outer periphery of the stator core 41 with an interval in the axial direction, like the cooling pipe 50 shown in FIG. is there. However, the cooling pipe 51 is spirally wound around the outer periphery of the stator core 41 in a state of being folded in a U shape.

  That is, in the cooling pipe 51, the pipe R1 from one end 51a to the folded part 51c is the forward path for the cooling water W, and the pipe R2 from the folded part 51c to the other end 51b is the return path for the cooling water W. Piping. The cooling pipe 51 is spirally wound in a U-shaped folded state, whereby the pipe R1 and the pipe R2 are alternately arranged along the axial direction on the outer periphery of the stator core 41. Will be.

  The cooling pipe 51 shown in FIG. 3 can effectively suppress the temperature rise of the motor 1 without causing complication of the apparatus, similarly to the cooling pipe 50 shown in FIG. In addition to this, the cooling pipe 51 shown in FIG. 3 can halve the labor required for winding around the stator core 41 compared to the cooling pipe 50 shown in FIG. In addition, the cooling pipe 51 shown in FIG. 3 can combine the end 51a to which the cooling water W is supplied and the end 51b to which the cooling water W is discharged at one place, and the radiator or the like from the ends 51a and 51b. Since there is no need to branch the pipe connected to the cooling device, the pipe can be simplified and downsized.

  4A and 4B are diagrams for explaining a second modification of the cooling pipe provided in the motor, in which FIG. 4A is a front sectional view of the cooling pipe, and FIG. 4B is a perspective view of the cooling pipe. The cooling pipe 52 according to the second modification shown in FIG. 4 is wound along the outer periphery of the stator core 41 so as to meander in the axial direction. Unlike the cooling pipes 50 and 51, the cooling pipe 52 is wound at intervals in the circumferential direction of the stator core 41 (rotational direction of the rotor 30).

  The interval between the cooling pipes 52 in the circumferential direction of the stator core 41 is appropriately set according to the size of the protrusion 41 a provided on the outer periphery of the stator core 41 in addition to the ability to cool the oil OL and the ability to cool the stator core 41. . In addition, this protrusion part 41a is provided in the outer periphery of the stator core 41 in order to fix the stator core 41 to the housing 10 using a fastening bolt, and the hole by which a fastening bolt is inserted is formed in each. Note that the interval between the cooling pipes 52 in the portion where the protrusion 41a is formed and the interval between the cooling pipes 52 in the portion where the protrusion 41a is not formed may be the same or different.

  As with the cooling pipes 50 and 51 shown in FIGS. 2 and 3, the cooling pipe 52 shown in FIG. 4 can effectively suppress an increase in the temperature of the motor 1 without increasing the complexity of the apparatus. In addition to this, the cooling pipe 52 shown in FIG. 4 has a meandering shape (shaft) avoiding the protrusion 41a even if the cooling pipe cannot be spirally wound by the protrusion 41a formed on the outer periphery of the stator core 41. It is possible to wind it around a curved pipe having a flow path parallel to the pipe.

  FIG. 5 is a side sectional view for explaining a third modification of the cooling pipe provided in the motor. The cooling pipe 53 according to the third modification shown in FIG. 5 is a pipe having a rectangular ring shape in cross section formed of a metal having high thermal conductivity such as copper (Cu) or aluminum (Al). The cooling pipe 53 is spirally wound over the entire outer periphery of the stator core 41 with an interval in the axial direction, like the cooling pipes 50 and 51 shown in FIGS. In addition, like the cooling pipe 53 shown in FIG. 5, it is also possible to wind around the outer periphery of the stator core 41 in a meandering manner.

  The cooling pipe 53 shown in FIG. 5 can increase the contact area (heat transfer area) with the stator core 41 as compared with the pipe having a circular cross-sectional shape shown in FIGS. Ability can be increased. However, if the interval between the cooling pipes 53 in the axial direction is made too narrow in order to increase the ability to cool the stator core 41, the contact area (heat transfer area) with the oil OL is reduced, and the ability to cool the oil OL. Will fall. For this reason, it is desirable to set the interval between the cooling pipes 54 shown in FIG. 4 in the cooling pipe 53 in consideration of the ability to cool both the stator core 41 and the oil OL.

  FIG. 6 is a side sectional view for explaining a fourth modification of the cooling pipe provided in the motor. The cooling pipe 54 according to the fourth modification shown in FIG. 6 is a pipe having a circular cross-section in the same manner as the cooling pipes 50 to 52 shown in FIGS. However, while the cooling pipes 50 to 52 are wound so as to be in contact with only the outer periphery of the stator core 41, the cooling pipe 54 shown in FIG. 6 includes the outer periphery of the stator core 41 and the body member 11 of the housing 10. It is wound in contact with both the circumference.

  By bringing the cooling pipe 54 into contact with both the stator core 41 and the body member 11, not only the stator core 41 but also the body member 11 can be cooled. Further, since the cooling pipe 54 is in contact with both the stator core 41 and the body member 11, a spiral flow path partitioned by the cooling pipe 54 is formed in the cooling chamber 14. Thereby, since the oil OL guided to the cooling chamber 14 can be guided spirally along the flow path, the oil OL can be cooled more efficiently. In FIG. 6, the cooling pipe 54 having an annular shape in cross section is illustrated. However, like the cooling pipe 53, the cooling pipe 54 may have a rectangular ring shape in cross section.

〔vehicle〕
FIG. 7 is a block diagram showing a main configuration of a vehicle according to an embodiment of the present invention. As shown in FIG. 7, the vehicle 60 of the present embodiment includes the motor 1, the pump 61, the radiator 62, the supply unit 63, the built-in oil tank 64, and the built-in oil pump 65 described with reference to FIGS. 1 and 2. It is an electric vehicle that can be driven by the power generated by the motor 1. In FIG. 1, control devices such as a battery for supplying electric power for driving the motor 1 and an inverter for controlling the rotation of the motor 1 are omitted.

  The pump 61 is provided to circulate the cooling water W, and sends the cooling water W discharged from the other end 50 b of the cooling pipe 50 provided in the motor 1 toward the radiator 62. The radiator 62 is a cooling device that cools the cooling water W sent from the pump 61. The radiator 62 may be either an air-cooled type or a water-cooled type. The cooling water W cooled by the radiator 62 is supplied to one end 50 a of the cooling pipe 50 provided in the motor 1.

  The supply unit 63 is a part that supplies oil OL discharged from the oil pipe 11 b via the cooling chamber 14 of the motor 1. The supply unit 63 includes a cooling unit 63a in which the oil OL discharged from the oil pipe 11b is used as cooling oil and a lubricating unit 63b in which the oil OL is used as lubricating oil. The cooling part 63a is a part accompanied by heat generation of, for example, the permanent magnet 32 and the coil 42 described with reference to FIG. 1, and the lubricating part 63b is a part where mechanical resistance such as the bearings 15 and 16 needs to be reduced. is there.

  The built-in oil tank 64 is built in the motor 1 and oil is supplied via a cooling unit 63a (for example, the oil flow path 21 and the coil 42 in FIG. 1) and a lubrication unit 63b (for example, the bearings 15 and 16 in FIG. 1). This is a tank for temporarily storing OL. The built-in oil pump 65 is provided to circulate the oil OL, and sends out the oil OL temporarily stored in the built-in oil tank 64 toward the oil pipe 11 a of the motor 1. Since both the built-in oil tank 64 and the built-in oil pump 65 are built in the motor 1, the configuration of the vehicle 60 can be further simplified.

  In the above configuration, when the pump 61 is driven, the cooling water W is sucked into the pump 61 from the other end 50 b of the cooling pipe 50 provided in the motor 1, is sent to the radiator 62, and is cooled by the radiator 62. . The cooling water W cooled by the radiator 62 is supplied to one end 50 a of the cooling pipe 50 provided in the motor 1. In this way, the cooling water W cooled by the radiator 62 is circulated through the pipe 50, and the stator core 41 and the like of the motor 1 are cooled.

  When the built-in oil pump 65 is driven, the oil OL is sucked into the built-in oil pump 65 from the built-in oil tank 64 of the motor 1 and is sent out toward the oil pipe 11 a provided in the motor 1. The oil OL is guided to the cooling chamber 14 via the oil pipe 11 a and cooled by the cooling pipe 50 provided in the cooling chamber 14. The oil OL through the cooling chamber 14 is supplied from the oil pipe 11b to the cooling unit 63a and the lubricating unit 63b, used as cooling oil and lubricating oil, and then collected in the built-in oil tank 64.

  Thus, the oil OL cooled by passing through the cooling chamber 14 is used as a cooling oil for a portion that generates heat of the vehicle 60 or a lubricating oil for a portion that needs to reduce mechanical resistance. As described above, in the present embodiment, since the motor 1 having a configuration that also has an oil cooler is used as a power generation source, the configuration of the entire vehicle 60 can be simplified.

  As mentioned above, although the rotary machine and vehicle by embodiment of this invention were demonstrated, this invention is not restrict | limited to the said embodiment, It can change freely within the scope of the present invention. For example, in the above-described embodiment, a motor that is a kind of electric motor has been described as an example, but the present invention can also be applied to a generator. Further, the housing 10 provided in the motor 1 does not necessarily need to be configured by the body member 11, the left side wall member 12, and the right side wall member 13, and may be arbitrary as long as the cooling chamber 14 can be formed between the stator core 41. It can be configured as follows.

  In the above-described embodiment, a vehicle using a motor as a power generation source has been described as an example. However, the motor may be used as a generator for recovering regenerative energy. In the above embodiment, an electric vehicle has been described as an example. However, the present invention can also be applied to a hybrid vehicle having a drive source as an engine and an electric motor. Furthermore, in the above-described embodiment, the example in which the oil OL discharged from the cooling chamber 14 of the motor 1 is used as the cooling oil and the lubricating oil in FIG. 7 is described, but it may be used for any one of the applications. Further, the oil OL used as the cooling oil and the oil OL used as the lubricating oil are completely separated from each other, and a motor for cooling the oil OL used as the cooling oil and an oil OL used as the lubricating oil are provided. You may separate from the motor to cool.

DESCRIPTION OF SYMBOLS 1 Motor 11 Body member 14 Cooling chamber 20 Rotating shaft 30 Rotor 40 Stator 50-54 Cooling piping 60 Vehicle 62 Radiator 63 Supply part OL Oil R1 Outbound R2 Return path W Cooling water

Claims (8)

In a rotating machine comprising a rotor configured to be rotatable around a rotation axis, and a stator provided around the rotor,
A cover member disposed around the stator and forming a cooling chamber between the stator and a space through which cooling oil is guided;
A cooling pipe disposed in the cooling chamber in contact with at least the stator and circulating cooling water for cooling the stator and the cooling oil introduced into the cooling chamber. Rotating machine.   The rotating machine according to claim 1, wherein the cooling pipe is wound around the outer periphery of the stator in a spiral or meandering manner with a distance between adjacent pipe walls.   The cooling pipe is a pipe folded in half, one pipe being the outgoing path of the cooling water and the other pipe being the return path of the cooling water, and in the axial direction of the rotating shaft The rotating machine according to claim 2, wherein the cooling water is wound around the outer periphery of the stator in a spiral manner so that the outward piping and the backward piping are alternately arranged along the cooling water.   The rotating machine according to claim 2, wherein the cooling pipe is wound along the outer periphery of the stator so as to meander in the axial direction of the rotating shaft.   The rotating machine according to any one of claims 1 to 4, wherein the cooling pipe is a pipe having a rectangular ring shape in cross section.   The said cooling piping is arrange | positioned in the said cooling chamber in the state which contacted both the said stator and the said cover member, The rotation as described in any one of Claims 1-5 characterized by the above-mentioned. Machine.   The rotating machine according to any one of claims 1 to 6, wherein the cooling oil through the cooling chamber is used for at least one of cooling and lubrication of the rotor. A rotating machine according to any one of claims 1 to 7,
A radiator for cooling the cooling water circulating through the cooling pipe provided in the rotating machine;
A vehicle comprising: a supply unit that supplies cooling oil through the cooling chamber of the rotating machine.

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