Electrical energy-mechanical energy converter

Abstract

This converter has: a stator core 20 in which a plurality of teeth are projected from a base section; U-phase conductive pipes 111, 112, ..., V-phase conductive pipes 121, 122, ..., and W-phase conductive pipes 131, 132, ... arranged in the spaces between the teeth; one heat medium flow member 310 which is disposed on one side of the stator core 20 and prevents a heat medium flowing through the U-phase conductive pipes 111, 112, ..., the V-phase conductive pipes 121, 122, ..., and the W-phase conductive pipes 131, 132, ... from leaking to the outside; and the other heat medium flow member 320 which is disposed on the other side of the stator core 20 and prevents the heat medium flowing through the U-phase conductive pipes 111, 112, ..., the V-phase conductive pipes 121, 122, ..., and the W-phase conductive pipes 131, 132, ... from leaking to the outside.

Description

Electrical energy to mechanical energy converter

[0001] The present invention relates to an electric energy to mechanical energy converter that converts electric energy into mechanical energy or mechanical energy into electric energy.

[0002] Converters that convert electrical energy into mechanical energy or mechanical energy into electrical energy include rotating electrical machines that function as electric motors or generators, linear motors, etc. In these converters, it is important to suppress temperature rise.

[0003] Japanese Patent Application Laid-Open No. 2004-135386 discloses an electric machine in which a single hollow conductor is doubled by folding it back halfway and wound around a stator core to form a stator coil, and a heat transfer medium is passed through the hollow conductor to suppress temperature rise.

[0004] However, the conventional electric machines described above require the hollow conductor to be wound into a coil, which results in poor productivity.

[0005] The present invention has been made in light of the above-mentioned conventional problems, and an object of the present invention is to provide an electrical energy-mechanical energy converter that has high cooling performance, high output, is small and lightweight, and is easy to manufacture.

[0006] The present invention solves the above-mentioned problems by the following means. For ease of understanding, the reference numerals corresponding to the embodiments of the present invention are written in parentheses, but the present invention is not limited to these. Furthermore, the configurations described with reference numerals may be appropriately replaced or improved.

[0007] One aspect includes: a stator core (20) having a plurality of teeth projecting from a base portion; a first U-phase conductive pipe (111) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes on both sides of the stator core (20) longer than the thickness of the stator core (20); a second U-phase conductive pipe (112) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes on both sides of the stator core (20) longer than the thickness of the stator core (20); and a U-phase wire (11) that is electrically conductive and connects to one end of the first U-phase conductive pipe (111) protruding from the stator core (20); a U-phase connector (210) that is electrically conductive and connected to the other end of the first U-phase conductive pipe (111) protruding from the stator core (20) and the other end of the second U-phase conductive pipe (112) protruding from the stator core (20); a first V-phase conductive pipe (121) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a second V-phase conductive pipe (122) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a V-phase wire (12) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a V-phase connector (220) that is electrically conductive and that is connected to the other end of the first V-phase conductive pipe (121) that protrudes from the stator core (20) and the other end of the second V-phase conductive pipe (122) that protrudes from the stator core (20); a first W-phase conductive pipe (131) that is electrically conductive and through which a heat medium can flow, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a second W-phase conductive pipe (132) that is electrically conductive and through which a heat medium can flow, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core (20) to a length greater than the thickness of the stator core (20);a W-phase wire (13) that is electrically conductive and connected to one end of the first W-phase conductive pipe (131) protruding from the stator core (20); a W-phase connector (230) that is electrically conductive and connected to the other end of the first W-phase conductive pipe (131) protruding from the stator core (20) and the other end of the second W-phase conductive pipe (132) protruding from the stator core (20); a neutral conductor (240) that is electrically conductive and connected to one end of the second U-phase conductive pipe (112) protruding from the stator core (20), one end of the second V-phase conductive pipe (122), and one end of the second W-phase conductive pipe (132); one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from leaking to the outside from a portion where the heat medium flows in contact with the stator core (20); and a second heat medium flow member (320) through which a heat medium can flow, which is arranged on the other side of the stator core (20) and prevents the heat medium flowing through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from leaking to the outside from a point where the heat medium contacts the stator core (20).

[0008] Another aspect includes a stator core (20) having a plurality of teeth projecting from a base portion; a plurality of U-phase conductive pipes (111, 112, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of U-phase connectors (211, 2121, 2122) that are electrically conductive and connected to one end or the other end of the plurality of U-phase conductive pipes (111, 112, ...) protruding from the stator core (20); and a U-phase wire (11) that is electrically conductive and connected to one end of one of the plurality of U-phase conductive pipes (111, 112, ...) that does not have the U-phase connector connected to one end thereof; a plurality of V-phase conductive pipes (121, 122, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of V-phase connectors (221, 2221, 2222) that are electrically conductive and connect one end side or the other end side of the plurality of V-phase conductive pipes (121, 122, ...) that protrude from the stator core (20); a V-phase wire (12) that is electrically conductive and connects one end side of one of the plurality of V-phase conductive pipes (121, 122, ...) that does not have the V-phase connector connected to one end side of the V-phase conductive pipes (121, 122, ...); a plurality of W-phase conductive pipes (131, 132, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of W-phase connectors (231, 2321, 2322) that are electrically conductive and are connected to one end or the other end of the plurality of W-phase conductive pipes (131, 132, ...) that protrude from the stator core (20); a W-phase wire (13) that is electrically conductive and is connected to one end of one of the plurality of W-phase conductive pipes (131, 132, ...) that does not have the W-phase connector connected to one end thereof; and a W-phase wire (13) that is electrically conductive and is connected to one end of the plurality of U-phase conductive pipes (111, 112, ...).a neutral conductor (240) connected to one end of a U-phase conductive pipe (121, 122, ...) to which the U-phase connector is not connected and to which the U-phase wire (11) is not connected, one end of a V-phase conductive pipe (121, 122, ...) to which the V-phase connector is not connected and to which the V-phase wire (12) is not connected, and one end of a W-phase conductive pipe (131, 132, ...) to which the W-phase connector is not connected and to which the W-phase wire (13) is not connected, The electrical energy-mechanical energy converter includes: one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, ...), the plurality of V-phase conductive pipes (121, 122, ...), and the plurality of W-phase conductive pipes (131, 132, ...) from leaking to the outside from a contact point with the stator core (20); and another heat medium flow member (320) through which a heat medium can flow, which is disposed on the other side of the stator core (20), and which prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, ...), the plurality of V-phase conductive pipes (121, 122, ...), and the plurality of W-phase conductive pipes (131, 132, ...) from leaking to the outside from a contact point with the stator core (20).

[0009] Yet another aspect includes a stator core (20) having a plurality of teeth projecting from a base portion; a plurality of U-phase conductive pipes (111, 112, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of U-phase connectors (211, 2121, 2122) that are electrically conductive and connected to one end or the other end of the plurality of U-phase conductive pipes (111, 112, ...) protruding from the stator core (20); and a U-phase wire (11) that is electrically conductive and connected to one end of one of the plurality of U-phase conductive pipes (111, 112, ...) having the U-phase connector connected to both one end and the other end of the U-phase conductive pipes; a plurality of V-phase conductive pipes (121, 122, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of V-phase connectors (221, 2221, 2222) that are electrically conductive and connect one end side or the other end side of the plurality of V-phase conductive pipes (121, 122, ...) that protrude from the stator core (20); a V-phase wire (12) that is electrically conductive and connects one end side of one of the plurality of V-phase conductive pipes (121, 122, ...) that has the V-phase connector connected to both one end side and the other end side of the V-phase conductive pipes (121, 122, ...); a plurality of W-phase conductive pipes (131, 132, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a plurality of W-phase connectors (231, 2321, 2322) that are electrically conductive and are connected to one end or the other end of the plurality of W-phase conductive pipes (131, 132, ...) that protrude from the stator core (20); a W-phase wire (13) that is electrically conductive and is connected to one end of one of the plurality of W-phase conductive pipes (131, 132, ...) that has the W-phase connector connected to both one end and the other end of the W-phase conductive pipes; and a W-phase wire (13) that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes (111, 112, ...).a neutral conductor (240) connected to one end of a U-phase conductive pipe (111, 112, ...) having the U-phase connector connected only to the other end of the plurality of V-phase conductive pipes (121, 122, ...), one end of a V-phase conductive pipe (121, 122, ...) having the V-phase connector connected only to the other end of the plurality of V-phase conductive pipes (121, 122, ...), and one end of a W-phase conductive pipe (131, 132, ...) having the W-phase connector connected only to the other end of the plurality of W-phase conductive pipes (131, 132, ...); one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, ...), the plurality of V-phase conductive pipes (121, 122, ...), and the plurality of W-phase conductive pipes (131, 132, ...) from leaking to the outside from a portion where the heat medium contacts the stator core (20); and a second heat medium flow member (320) through which a heat medium can flow, which is disposed on the other side of the stator core (20) and prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, ...), the plurality of V-phase conductive pipes (121, 122, ...), and the plurality of W-phase conductive pipes (131, 132, ...) from leaking to the outside from a point where the heat medium contacts the stator core (20).

[0010] FIG. 1 is a diagram showing a stator of a prototype electrical energy mechanical energy converter. FIG. 2 is a diagram showing an example of a conductive tube. FIG. 3 is an exploded view showing an example of a rotating electric machine. FIG. 4 is an exploded view showing an example of a rotating electric machine. FIG. 5A is an assembly view of the rotating electric machine shown in FIGS. 3 and 4 as viewed obliquely from the left, and FIG. 5B is an assembly view as viewed obliquely from the right. FIG. 6 is a development diagram of a model of the rotating electric machine shown in FIGS. 3 and 4. FIG. 7 is a diagram explaining the flow of a heat medium in the development diagram of the model shown in FIG. 6. FIG. 8 is a diagram explaining the flow of electricity from the U-phase line to the V-phase line in the development diagram of the model shown in FIG. 6. FIG. 9 is a diagram explaining the flow of electricity from the V-phase line to the W-phase line in the development diagram of the model shown in FIG. 6. FIG. 10 is a diagram explaining the flow of electricity from the W-phase line to the U-phase line in the development diagram of the model shown in FIG. 6. FIG. 11 is an exploded view showing a second embodiment of a rotating electric machine. FIG. 12A is an assembly diagram of the rotating electric machine shown in FIG. 11 as viewed obliquely from the left, and FIG. 12B is an assembly diagram as viewed obliquely from the right. FIG. 13 is an exploded view modeled on the rotating electric machine shown in FIG. 11 . FIG. 14 is an exploded view modeled on the rotating electric machine of the third embodiment. FIG. 15 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model exploded view shown in FIG. 14 . FIG. 16 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model exploded view shown in FIG. 14 . FIG. 17 is a exploded view modeled on the rotating electric machine of the fourth embodiment. FIG. 18 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model exploded view shown in FIG. 17 . FIG. 19 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model exploded view shown in FIG. 17 . FIG. 20 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model exploded view shown in FIG. 17 . Fig. 21 is a development diagram modeling a rotating electric machine of the fifth embodiment. Fig. 22 is a diagram explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Fig. 21. Fig. 23 is a diagram explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 21. Fig. 24 is a diagram explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 21. Fig. 25 is a development diagram modeling a rotating electric machine of the sixth embodiment.FIG. 26 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. 25 . FIG. 27 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 25 . FIG. 28 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 25 . FIG. 29 is a development diagram modeling a rotating electric machine of the seventh embodiment. FIG. 30 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. 29 . FIG. 31 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 29 . FIG. 32 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 29 . FIG. 33 is a development diagram modeling a rotating electric machine of the eighth embodiment. FIG. 34 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. 33 . FIG. 35 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 33 . FIG. 36 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 33 . FIG. 37 is a development diagram modeling a rotating electric machine of the ninth embodiment. FIG. 38 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. 37 . FIG. 39 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 37 . FIG. 40 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 37 . FIG. 41 is an exploded view showing a rotating electric machine according to a tenth embodiment. FIG. 42 is a diagram illustrating an example of a cylindrical type conductor pipe. FIG. 43 is a diagram illustrating an example of a type of conductor pipe having multiple passages formed therein.

[0011] The embodiments of the present invention, the advantages of the present invention will be described in detail below with reference to the accompanying drawings.

[0012] First Embodiment FIG. 1 is a diagram showing a stator of a prototype electrical energy-mechanical energy converter.

[0013] In the following description, unless otherwise specified, the electrical energy-mechanical energy converter will be described as a rotating electrical machine that functions as an electric motor or a generator.

[0014] Fig. 1 shows a stator core, which is a characteristic configuration of a rotating electric machine according to this embodiment. Note that Fig. 1 shows a stator core used in an inner rotor type rotating electric machine, but this is just one example. The gist of the present invention may also be applied to an outer rotor type rotating electric machine.

[0015] As shown in Fig. 1, stator core 20 is cylindrical and has a structure in which a plurality of teeth 2001, 2002, ... are protruding from the inner peripheral wall of a base portion. In Fig. 1, 192 teeth are protruding. Stator core 20 is formed by laminating thin electromagnetic steel sheets.

[0016] FIG. 2 is a diagram showing an example of a conductive tube.

[0017] The conductive pipe 100 is electrically conductive and allows a heat transfer medium to flow through it. The surface is insulated with an insulating varnish or the like. The heat transfer medium flows through the inner periphery, and this inner periphery may also be insulated with an insulating varnish or the like. While a flat conductive pipe 100 is shown in FIG. 2 as an example of the conductive pipe 100, it may also be cylindrical.

[0018] The conductive tube 100 is disposed in the space (slot) between the teeth of the stator core 20. Note that the conductive tube 100 is longer than the thickness of the stator core 20, and therefore protrudes on both sides of the stator core 20 when disposed in the slot of the stator core 20.

[0019] 3 and 4 are exploded views showing an example of a rotating electric machine.

[0020] FIG. 1 illustrates a stator core 20 with 192 protruding teeth. A rotating electric machine is constructed by placing 192 conductive pipes in the spaces (slots) between these teeth. However, illustrating such a specific structure would be extremely complex and cumbersome. Therefore, for ease of understanding, the following description will be given using simplified structures. However, these are not mere models. Of course, they also function.

[0021] The rotating electric machine 1 shown in Figures 3 and 4 has a structure in which 12 teeth are protruded from the stator core 20, and 12 conductive tubes are arranged in the spaces (slots) between the teeth. The rotor 50 is a four-pole type, and the rotating electric machine shown in Figures 3 and 4 is a 12N4P type.

[0022] The stator core 20 is formed by laminating thin electromagnetic steel sheets. The stator core 20 has 12 teeth protruding from the inner peripheral wall of the base portion. 12 conductive tubes 111, 112, ... are arranged in the spaces (slots) between the teeth. A coating material is applied to the inner peripheral side of the stator core 20 to seal the spaces (slots) between the teeth. The conductive tubes are longer than the thickness of the stator core 20, so when arranged in the slots of the stator core 20, they protrude on both sides of the stator core 20. Connectors 211, 221, ... are connected to these protruding portions, allowing electrical current to flow between specific conductive tubes. Details will be described later.

[0023] Furthermore, heat medium flow members 310 and 320 are arranged on both sides of the stator core 20 .

[0024] The heat medium flow member 310 has a flow path through which the heat medium flows. The flow path is divided into two sections by a pair of partitions 3100. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to one section (first heat medium flow section 3101). A second heat medium flow pipe 332 for supplying or discharging the heat medium is connected to the other section (second heat medium flow section 3102). The heat medium flow member 310 is fixed to the stator core 20 in a liquid-tight manner so that the heat medium flowing inside does not leak to the outside.

[0025] A flow path through which the heat medium flows is formed in the heat medium flow member 320. The heat medium flow member 320 is fixed to the stator core 20 in a liquid-tight manner so that the heat medium flowing inside does not leak to the outside.

[0026] Of the twelve conductive pipes, a U-phase wire 11 is connected to one of the U-phase conductive pipes. Of the twelve conductive pipes, a V-phase wire 12 is connected to one of the V-phase conductive pipes. Of the twelve conductive pipes, a W-phase wire 13 is connected to one of the W-phase conductive pipes.

[0027] 5A and 5B are assembly diagrams of the rotating electric machine shown in FIGS. 3 and 4 , with FIG. 5A being a view from the diagonal left and FIG. 5B being a view from the diagonal right. Looking at FIGS. 5A and 5B , it can be seen that heat medium flow members 310 and 320 are disposed on both sides of the stator core 20. Looking at FIG. 5B , it can also be seen that the heat medium flow member 310 is provided with a first heat medium flow pipe 331 and a second heat medium flow pipe 332. It can also be seen that the U-phase wire 11, the V-phase wire 12, and the W-phase wire 13 protrude. Furthermore, the heat medium flow members 310 and 320 also serve as motor housings, and are bolted to the stator core 20 to closely contact the heat medium flow members 310 and 320.

[0028] FIG. 6 is a development view of a model of the rotating electrical machine shown in FIGS.

[0029] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. In Fig. 6, from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0030] Conductive tubes are arranged in the spaces (slots) between each tooth. A U-phase first conductive tube 111 is arranged in the space (slot) between the first tooth 2001 and the second tooth 2002. A V-phase fourth conductive tube 124 is arranged in the space (slot) between the second tooth 2002 and the third tooth 2003. A W-phase third conductive tube 133 is arranged in the space (slot) between the third tooth 2003 and the fourth tooth 2004. A U-phase second conductive tube 112 is arranged in the space (slot) between the fourth tooth 2004 and the fifth tooth 2005. A V-phase first conductive tube 121 is arranged in the space (slot) between the fifth tooth 2005 and the sixth tooth 2006. A W-phase fourth conductive tube 134 is arranged in the space (slot) between the sixth tooth 2006 and the seventh tooth 2007. A U-phase third conductive tube 113 is disposed in the space (slot) between the seventh tooth 2007 and the eighth tooth 2008. A V-phase second conductive tube 122 is disposed in the space (slot) between the eighth tooth 2008 and the ninth tooth 2009. A W-phase first conductive tube 131 is disposed in the space (slot) between the ninth tooth 2009 and the tenth tooth 2010. A U-phase fourth conductive tube 114 is disposed in the space (slot) between the tenth tooth 2010 and the eleventh tooth 2011. A V-phase third conductive tube 123 is disposed in the space (slot) between the eleventh tooth 2011 and the twelfth tooth 2012. A W-phase second conductive tube 132 is disposed in the space (slot) between the twelfth tooth 2012 and the first tooth 2001.

[0031] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. The interior of the one heat medium flow member 310 is divided into two sections by a pair of partitions 3100. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to one section (first heat medium flow section 3101). A second heat medium flow pipe 332 for supplying or discharging the heat medium is connected to the other section (second heat medium flow section 3102).

[0032] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20 .

[0033] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0034] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, thereby electrically connecting the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113.

[0035] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0036] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0037] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123.

[0038] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0039] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0040] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, thereby electrically connecting the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133.

[0041] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0042] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0043] Fig. 7 is a diagram for explaining the flow of the heat medium in the model development diagram shown in Fig. 6. The arrows indicate the direction of the heat medium flow.

[0044] The heat medium supplied from the first heat medium flow pipe 331 flows from the first heat medium flow section 3101 of one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the V-phase fourth conductive pipe 124, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, and the W-phase fourth conductive pipe 134 to the other heat medium flow member 320. The heat medium then flows through any one of the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase fourth conductive pipe 114, the V-phase third conductive pipe 123, and the W-phase second conductive pipe 132 to reach the second heat medium flow section 3102 of one heat medium flow member 310 and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0045] Next, the flow of electricity will be described. Figure 8 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 6. The arrows indicate the direction of the flow of electricity.

[0046] First, a description will be given of the case where electricity flows from the U-phase wire 11 to the V-phase wire 12. The electricity that enters from the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conductive pipe 111 → U-phase other end first connector 2121 → U-phase second conductive pipe 112 → U-phase one end connector 211 → U-phase third conductive pipe 113 → U-phase other end second connector 2122 → U-phase fourth conductive pipe 114 → neutral wire connector 240 → V-phase fourth conductive pipe 124 → V-phase other end second connector 2222 → V-phase third conductive pipe 123 → V-phase one end connector 221 → V-phase second conductive pipe 122 → V-phase other end first connector 2221 → V-phase first conductive pipe 121 → V-phase wire 12.

[0047] Fig. 9 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 6. The arrows indicate the direction of the electricity flow.

[0048] Next, a description will be given of the case where electricity flows from the V-phase wire 12 to the W-phase wire 13. The electricity that enters from the V-phase wire 12 flows in the following order: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase other end first connector 2221 → V-phase second conducting pipe 122 → V-phase one end connector 221 → V-phase third conducting pipe 123 → V-phase other end second connector 2222 → V-phase fourth conducting pipe 124 → neutral wire connector 240 → W-phase fourth conducting pipe 134 → W-phase other end second connector 2322 → W-phase third conducting pipe 133 → W-phase one end connector 231 → W-phase second conducting pipe 132 → W-phase other end first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0049] Fig. 10 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 6. The arrow indicates the direction of the electricity flow.

[0050] Next, a description will be given of the case where electricity flows from the W-phase wire 13 to the U-phase wire 11. The electricity that enters from the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase other end first connector 2321 → W-phase second conductive pipe 132 → W-phase one end connector 231 → W-phase third conductive pipe 133 → W-phase other end second connector 2322 → W-phase fourth conductive pipe 134 → neutral connector 240 → U-phase fourth conductive pipe 114 → U-phase other end second connector 2122 → U-phase third conductive pipe 113 → U-phase one end connector 211 → U-phase second conductive pipe 112 → U-phase other end first connector 2121 → U-phase first conductive pipe 111 → U-phase wire 11.

[0051] According to the present embodiment described above, the heat transfer medium flows inside each conductive pipe, and therefore the cooling performance is excellent.

[0052] Furthermore, each conductive tube is disposed in the space (slot) between the teeth of the stator core 20, and a coating material is applied to the inner periphery of the stator core 20 so as to seal the space (slot) between the teeth. Heat medium flow members 310, 320 are disposed on both sides of the stator core 20 and fastened with bolts to be tightly attached to the stator core 20. This structure eliminates the need to wind conductive wires around the teeth as in a typical rotating electric machine, resulting in excellent productivity.

[0053] Furthermore, the heat medium is supplied from the first heat medium flow pipe 331 provided in one of the heat medium flow members 310, flows from the first heat medium flow section 3101 through one of the conductive pipes, reaches the other heat medium flow member 320, flows through another conductive pipe, reaches the second heat medium flow section 3102 of the one heat medium flow member 310, and is discharged from the second heat medium flow pipe 332. In this way, since both the supply point and the discharge point of the heat medium are provided in one of the heat medium flow members 310, the rotating electric machine of this embodiment has excellent mountability when installed in equipment.

[0054] Furthermore, since each connector is disposed inside the heat medium flow member, it is cooled by the heat medium flowing through the heat medium flow member, resulting in excellent cooling performance.

[0055] Furthermore, since each connector is disposed inside the heat transfer medium flow member and is not exposed to the outside, it is possible to prevent foreign matter from getting between the connectors, and maintenance is easy.

[0056] Second Embodiment Fig. 11 is an exploded view showing a second embodiment of a rotating electrical machine. In the following description, parts that perform the same functions as those described above will be given the same reference numerals, and duplicated explanations will be omitted where appropriate.

[0057] The second embodiment differs from the first embodiment in the shapes of the first heat medium flow member 310 and the other heat medium flow member 320. That is, while the first heat medium flow member 310 in the first embodiment has its interior divided into two sections by a pair of partitions 3100, the first heat medium flow member 310 in the second embodiment does not have any partitions. Furthermore, the first heat medium flow member 310 in the second embodiment is connected to a first heat medium flow pipe 331 through which the heat medium flows, but is not connected to a second heat medium flow pipe 332 through which the heat medium flows.

[0058] The second heat medium flow pipe 332 is connected to the other heat medium flow member 320 .

[0059] 12A and 12B are assembly diagrams of the rotating electric machine shown in Fig. 11, with Fig. 12A being a view from the diagonal left and Fig. 12B being a view from the diagonal right. Fig. 12A shows that the other heat medium flow member 320 is provided with a second heat medium flow pipe 332. Fig. 12B shows that the one heat medium flow member 310 is provided with a first heat medium flow pipe 331.

[0060] Fig. 13 is a development view of a model of the rotating electrical machine shown in Fig. 11. The arrows indicate the direction of flow of the heat medium.

[0061] Conductive tubes are arranged in the spaces (slots) between the teeth of the stator core 20. The arrangement order of these teeth and conductive tubes, the connection configuration of the connectors, and the like are the same as those in the first embodiment, and therefore will not be described again.

[0062] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0063] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0064] The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the V-phase fourth conductive pipe 124, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, the W-phase fourth conductive pipe 134, the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase fourth conductive pipe 114, the V-phase third conductive pipe 123, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0065] As described above, the second embodiment also has excellent cooling performance because the heat medium flows inside each conductive pipe. In particular, in the second embodiment, the heat medium is supplied from the first heat medium flow pipe 331 provided in one heat medium flow member 310, flows through one of the conductive pipes, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. As the heat medium flows a short distance, the cooling performance is even better than in the first embodiment.

[0066] Furthermore, since all the heat medium flows in one direction (from top to bottom in FIG. 13), the flow resistance of the heat medium is small, and the output of heat medium supply equipment such as a pump can be kept low.

[0067] Third Embodiment FIG. 14 is a development view of a model of a rotating electrical machine according to a third embodiment.

[0068] The rotating electric machine of the third embodiment differs from the rotating electric machine of the second embodiment in the way the conductive pipes are connected by connectors. The arrangement of the teeth and conductive pipes is the same as in the first and second embodiments, so a description thereof will be omitted. Furthermore, the configuration of the heat medium flow member and the flow of the heat medium are the same as in the second embodiment, so a description thereof will be omitted.

[0069] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. A U-phase one-end connector 211 is connected to one end of the U-phase first conductive pipe 111 and one end of the U-phase third conductive pipe 113, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase third conductive pipe 113.

[0070] A U-phase other end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, and the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112 are electrically connected.

[0071] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0072] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. A V-phase one-end connector 221 is connected to one end of the V-phase first conductive pipe 121 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase third conductive pipe 123.

[0073] A V-phase other end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, and the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122 are electrically connected.

[0074] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0075] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. A W-phase one-end connector 231 is connected to one end of the W-phase first conductive pipe 131 and one end of the W-phase third conductive pipe 133, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase third conductive pipe 133.

[0076] A W-phase other end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, and the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132 are electrically connected.

[0077] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0078] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the U-phase fourth conductive pipe 114, one end of the V-phase second conductive pipe 122, one end of the V-phase fourth conductive pipe 124, one end of the W-phase second conductive pipe 132, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134.

[0079] Next, the flow of electricity from the U-phase wire to the V-phase wire will be described. The arrows indicate the direction of electricity flow. Electricity entering from the U-phase wire 11 branches into two. In the first embodiment and other embodiments, electricity flows from the U-phase wire to the V-phase wire without branching, which is a series connection type. In contrast, in this third embodiment, electricity branches and then merges, which is a parallel connection type.

[0080] One branched flow flows from the U-phase one end connector 211 → U-phase third conductive pipe 113 → U-phase other end second connector 2122 → U-phase fourth conductive pipe 114 → neutral wire connector 240 → V-phase second conductive pipe 122 → V-phase other end first connector 2221 → V-phase first conductive pipe 121 → V-phase wire 12.

[0081] The other flow passes through the U-phase first conducting pipe 111, the U-phase other end first connector 2121, the U-phase second conducting pipe 112, and the neutral wire connector 240, before branching into two. One flow passes through the V-phase second conducting pipe 122, the V-phase other end first connector 2221, the V-phase first conducting pipe 121, and the V-phase wire 12. The other flow passes through the V-phase fourth conducting pipe 124, the V-phase other end second connector 2222, the V-phase third conducting pipe 123, the V-phase one end connector 221, and the V-phase wire 12.

[0082] Fig. 15 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 14. The arrows indicate the direction of electricity flow.

[0083] Next, a description will be given of the case where electricity flows from the V-phase wire 12 to the W-phase wire 13. The electricity entering from the V-phase wire 12 branches into two. One flow passes through the V-phase one end connector 221, the V-phase third conducting pipe 123, the V-phase other end second connector 2222, the V-phase fourth conducting pipe 124, the neutral wire connector 240, the W-phase fourth conducting pipe 134, the W-phase other end second connector 2322, the W-phase third conducting pipe 133, the W-phase one end connector 231, and the W-phase wire 13.

[0084] The other flow passes through the V-phase first conducting pipe 121, the V-phase other end first connector 2221, the V-phase second conducting pipe 122, and the neutral wire connector 240, before branching into two. One flow passes through the W-phase second conducting pipe 132, the W-phase other end first connector 2321, the W-phase first conducting pipe 131, and the W-phase wire 13. The other flow passes through the W-phase fourth conducting pipe 134, the W-phase other end second connector 2322, the W-phase third conducting pipe 133, the W-phase one end connector 231, and the W-phase wire 13.

[0085] Fig. 16 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 14. The arrow indicates the direction of the electricity flow.

[0086] Next, a description will be given of electricity flowing from the W-phase wire 13 to the U-phase wire 11. The electricity entering from the W-phase wire 13 branches into two. One flow passes through the W-phase one end connector 231, the W-phase third conductive pipe 133, the W-phase other end second connector 2322, the W-phase fourth conductive pipe 134, the neutral conductor connector 240, the U-phase second conductive pipe 112, the U-phase other end first connector 2121, the U-phase first conductive pipe 111, and the U-phase wire 11.

[0087] The other flow passes through the W-phase first conductive pipe 131, the W-phase other end first connector 2321, the W-phase second conductive pipe 132, and the neutral wire connector 240, before branching into two. One flow passes through the U-phase second conductive pipe 112, the U-phase other end first connector 2121, the U-phase first conductive pipe 111, and the U-phase wire 11. The other flow passes through the U-phase fourth conductive pipe 114, the U-phase other end second connector 2122, the U-phase third conductive pipe 113, the U-phase one end connector 211, and the U-phase wire 11.

[0088] According to the third embodiment described above, the heat transfer medium flows inside each conductive tube, and therefore the cooling performance is excellent.

[0089] For the same current value, the type of this third embodiment (parallel connection type) generates one-quarter the heat compared to the series connection type like the first embodiment. For the same voltage and output, the parallel connection type has twice the rotation speed compared to the series connection type. Therefore, to achieve the same rotation speed, the motor length must be doubled, resulting in approximately half the heat generation. If a rotation speed twice as high as the series connection type is acceptable, the heat generation will be one-quarter for the same voltage, output, and motor length. In this way, the heat generation can be kept low. Conversely, this can also be said to mean that for the same motor size and weight, the rotation speed will be doubled, but twice the current can be passed through.

[0090] Fourth Embodiment FIG. 17 is a development view of a model of a rotating electrical machine according to a fourth embodiment.

[0091] The rotating electric machines of the above-described embodiments are all 12N4P type rotating electric machines in which 12 conductive tubes are arranged in the spaces (slots) between the teeth and a 4-pole rotor is used.

[0092] In contrast, the rotating electric machine of the fourth embodiment is a 12N8P type rotating electric machine in which 12 conductor tubes are arranged in the spaces (slots) between the teeth and an 8-pole rotor is used. Specifically, the rotating electric machine of the fourth embodiment differs from the rotating electric machine of the first embodiment in the order in which the conductor tubes are arranged and in the way the conductor tubes are connected by connectors.

[0093] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 17 , from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0094] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 is arranged in the space (slot) between the first teeth 2001 and the second teeth 2002. A U-phase second conductive tube 112 is arranged in the space (slot) between the second teeth 2002 and the third teeth 2003. A V-phase third conductive tube 123 is arranged in the space (slot) between the third teeth 2003 and the fourth teeth 2004. A V-phase fourth conductive tube 124 is arranged in the space (slot) between the fourth teeth 2004 and the fifth teeth 2005. A W-phase first conductive tube 131 is arranged in the space (slot) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase second conductive tube 132 is arranged in the space (slot) between the sixth teeth 2006 and the seventh teeth 2007. A U-phase third conductive tube 113 is disposed in the space (slot) between the seventh tooth 2007 and the eighth tooth 2008. A U-phase fourth conductive tube 114 is disposed in the space (slot) between the eighth tooth 2008 and the ninth tooth 2009. A V-phase first conductive tube 121 is disposed in the space (slot) between the ninth tooth 2009 and the tenth tooth 2010. A V-phase second conductive tube 122 is disposed in the space (slot) between the tenth tooth 2010 and the eleventh tooth 2011. A W-phase third conductive tube 133 is disposed in the space (slot) between the eleventh tooth 2011 and the twelfth tooth 2012. A W-phase fourth conductive tube 134 is disposed in the space (slot) between the twelfth tooth 2012 and the first tooth 2001.

[0095] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0096] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0097] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0098] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, thereby electrically connecting the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113.

[0099] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0100] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0101] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123.

[0102] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0103] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0104] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, thereby electrically connecting the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133.

[0105] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0106] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0107] 17 , the arrows indicate the direction of the heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through one of the U-phase first conductive pipe 111, the U-phase second conductive pipe 112, the V-phase third conductive pipe 123, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase second conductive pipe 132, the U-phase third conductive pipe 113, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase second conductive pipe 122, the W-phase third conductive pipe 133, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0108] Next, the flow of electricity from the U-phase wire to the V-phase wire will be described. Figure 18 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 17. The arrows indicate the direction of electricity flow. Electricity entering from the U-phase wire 11 flows as follows: U-phase wire 11 → U-phase first conductive pipe 111 → U-phase other end first connector 2121 → U-phase second conductive pipe 112 → U-phase one end connector 211 → U-phase third conductive pipe 113 → U-phase other end second connector 2122 → U-phase fourth conductive pipe 114 → neutral connector 240 → V-phase fourth conductive pipe 124 → V-phase other end second connector 2222 → V-phase third conductive pipe 123 → V-phase one end connector 221 → V-phase second conductive pipe 122 → V-phase other end first connector 2221 → V-phase first conductive pipe 121 → V-phase wire 12.

[0109] Fig. 19 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 17. The arrows indicate the direction of electricity flow.

[0110] Next, a description will be given of the case where electricity flows from the V-phase wire 12 to the W-phase wire 13. The electricity that enters from the V-phase wire 12 flows in the following order: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase other end first connector 2221 → V-phase second conducting pipe 122 → V-phase one end connector 221 → V-phase third conducting pipe 123 → V-phase other end second connector 2222 → V-phase fourth conducting pipe 124 → neutral wire connector 240 → W-phase fourth conducting pipe 134 → W-phase other end second connector 2322 → W-phase third conducting pipe 133 → W-phase one end connector 231 → W-phase second conducting pipe 132 → W-phase other end first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0111] Fig. 20 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 17. The arrow indicates the direction of the electricity flow.

[0112] Next, a description will be given of the case where electricity flows from the W-phase wire 13 to the U-phase wire 11. The electricity that enters from the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase other end first connector 2321 → W-phase second conductive pipe 132 → W-phase one end connector 231 → W-phase third conductive pipe 133 → W-phase other end second connector 2322 → W-phase fourth conductive pipe 134 → neutral connector 240 → U-phase fourth conductive pipe 114 → U-phase other end second connector 2122 → U-phase third conductive pipe 113 → U-phase one end connector 211 → U-phase second conductive pipe 112 → U-phase other end first connector 2121 → U-phase first conductive pipe 111 → U-phase wire 11.

[0113] By configuring as in this embodiment described above, even in a 12N8P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0114] Fifth Embodiment FIG. 21 is a development view of a model of a rotating electrical machine according to a fifth embodiment.

[0115] The rotating electric machine of the fifth embodiment is a 6N2P type rotating electric machine in which six conductive tubes are arranged in the spaces (slots) between the teeth and a two-pole rotor is used.

[0116] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 21 , from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, and sixth teeth 2006.

[0117] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 is arranged in the space (slot) between the first teeth 2001 and the second teeth 2002. A V-phase second conductive tube 122 is arranged in the space (slot) between the second teeth 2002 and the third teeth 2003. A W-phase first conductive tube 131 is arranged in the space (slot) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductive tube 112 is arranged in the space (slot) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductive tube 121 is arranged in the space (slot) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase second conductive tube 132 is arranged in the space (slot) between the sixth teeth 2006 and the first teeth 2001.

[0118] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0119] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0120] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. The other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112 are connected to a U-phase connector 210, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0121] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase connector 220 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0122] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase connector 230 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0123] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the V-phase second conductive pipe 122, and one end of the W-phase second conductive pipe 132, thereby electrically conducting the U-phase second conductive pipe 112, the V-phase second conductive pipe 122, and the W-phase second conductive pipe 132.

[0124] 21 , the arrows indicate the direction of heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through one of the U-phase first conductive pipe 111, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, in the present embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332; however, the heat medium may be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0125] Next, the flow of electricity will be explained. Figure 22 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 21. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering from the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase connector 210 → U-phase second conducting pipe 112 → neutral wire connector 240 → V-phase second conducting pipe 122 → V-phase connector 220 → V-phase first conducting pipe 121 → V-phase wire 12.

[0126] Fig. 23 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 21. The arrows indicate the direction of electricity flow.

[0127] Next, a description will be given of the case where electricity flows from the V-phase wire 12 to the W-phase wire 13. The electricity that enters from the V-phase wire 12 flows in the following order: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase connector 220 → V-phase second conducting pipe 122 → neutral wire connector 240 → W-phase second conducting pipe 132 → W-phase connector 230 → W-phase first conducting pipe 131 → W-phase wire 13.

[0128] Fig. 24 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 21. The arrow indicates the direction of electricity flow.

[0129] Next, a description will be given of the case where electricity flows from the W-phase wire 13 to the U-phase wire 11. The electricity that enters from the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase connector 230 → W-phase second conductive pipe 132 → neutral wire connector 240 → U-phase second conductive pipe 112 → U-phase connector 210 → U-phase first conductive pipe 111 → U-phase wire 11.

[0130] By configuring the present embodiment as described above, even in a 6N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0131] Sixth Embodiment FIG. 25 is a development view of a model of a rotating electrical machine according to a sixth embodiment.

[0132] The rotating electric machine of the sixth embodiment is a 3N2P type rotating electric machine in which a conductive tube is arranged in the space (slot) between three teeth and which uses a two-pole rotor.

[0133] A plurality of teeth are provided protruding from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 25, from the left, there are first teeth 2001, second teeth 2002, and third teeth 2003.

[0134] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase second conductive tube 112 and a V-phase first conductive tube 121 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. Note that in FIG. 25 , the U-phase second conductive tube 112 is arranged on the first teeth 2001 side and the V-phase first conductive tube 121 is arranged on the second teeth 2002 side. However, conversely, the V-phase first conductive tube 121 may be arranged on the first teeth 2001 side and the U-phase second conductive tube 112 may be arranged on the second teeth 2002 side. However, from the standpoint of efficiency, it is preferable that the U-phase second conductive tube 112 is arranged on the first teeth 2001 side and the V-phase first conductive tube 121 is arranged on the second teeth 2002 side, as shown in FIG. 25 . The same applies below. A V-phase second conductive tube 122 and a W-phase first conductive tube 131 are arranged in the space (slot) between the second teeth 2002 and the third teeth 2003. A W-phase second conductive tube 132 and a U-phase first conductive tube 111 are arranged in the space (slot) between the third teeth 2003 and the first teeth 2001.

[0135] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0136] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0137] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. The other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112 are connected to a U-phase connector 210, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0138] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase connector 220 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0139] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase connector 230 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0140] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the V-phase second conductive pipe 122, and one end of the W-phase second conductive pipe 132, thereby electrically conducting the U-phase second conductive pipe 112, the V-phase second conductive pipe 122, and the W-phase second conductive pipe 132.

[0141] 25 , the arrows indicate the direction of heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through one of the U-phase first conductive pipe 111, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, in the present embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332; however, the heat medium may be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0142] Next, the flow of electricity will be explained. Figure 26 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 25. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering from the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase connector 210 → U-phase second conducting pipe 112 → neutral wire connector 240 → V-phase second conducting pipe 122 → V-phase connector 220 → V-phase first conducting pipe 121 → V-phase wire 12.

[0143] Fig. 27 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 25. The arrows indicate the direction of electricity flow.

[0144] Next, a description will be given of the case where electricity flows from the V-phase wire 12 to the W-phase wire 13. The electricity that enters from the V-phase wire 12 flows in the following order: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase connector 220 → V-phase second conducting pipe 122 → neutral wire connector 240 → W-phase second conducting pipe 132 → W-phase connector 230 → W-phase first conducting pipe 131 → W-phase wire 13.

[0145] Fig. 28 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 25. The arrow indicates the direction of electricity flow.

[0146] Next, a description will be given of the case where electricity flows from the W-phase wire 13 to the U-phase wire 11. The electricity that enters from the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase connector 230 → W-phase second conductive pipe 132 → neutral wire connector 240 → U-phase second conductive pipe 112 → U-phase connector 210 → U-phase first conductive pipe 111 → U-phase wire 11.

[0147] By configuring the present embodiment as described above, even in a 3N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0148] Seventh Embodiment FIG. 29 is a development view of a model of a rotating electrical machine according to a seventh embodiment.

[0149] The rotating electric machine of this seventh embodiment is a 12N4P type rotating electric machine in which conductive pipes are placed in the spaces (slots) between the 12 teeth and which uses a four-pole rotor. Furthermore, while the above embodiments are of the one-turn type in which electricity makes only one circuit around the teeth, this seventh embodiment is of the two-turn type in which electricity makes two circuits around the teeth.

[0150] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 29 , from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0151] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 and a U-phase third conductive tube 113 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. While FIG. 29 shows the U-phase first conductive tube 111 arranged on the first teeth 2001 side and the U-phase third conductive tube 113 arranged on the second teeth 2002 side, the reverse may be true: the U-phase third conductive tube 113 arranged on the first teeth 2001 side and the U-phase first conductive tube 111 arranged on the second teeth 2002 side. The U-phase first conductive tube 111 and the U-phase third conductive tube 113 may be arranged so as to overlap each other in the front-to-rear direction. The same applies below. A V-phase sixth conductive tube 126 and a V-phase eighth conductive tube 128 are arranged in the spaces (slots) between the second teeth 2002 and the third teeth 2003. A W-phase fifth conductive tube 135 and a W-phase seventh conductive tube 137 are disposed in the spaces (slots) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductive tube 112 and a U-phase fourth conductive tube 114 are disposed in the spaces (slots) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductive tube 121 and a V-phase third conductive tube 123 are disposed in the spaces (slots) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase sixth conductive tube 136 and a W-phase eighth conductive tube 138 are disposed in the spaces (slots) between the sixth teeth 2006 and the seventh teeth 2007. A U-phase fifth conductive tube 115 and a U-phase seventh conductive tube 117 are disposed in the spaces (slots) between the seventh teeth 2007 and the eighth teeth 2008. A V-phase second conductive tube 122 and a V-phase fourth conductive tube 124 are disposed in the space (slot) between the eighth tooth 2008 and the ninth tooth 2009. A W-phase first conductive tube 131 and a W-phase third conductive tube 133 are disposed in the space (slot) between the ninth tooth 2009 and the tenth tooth 2010. A U-phase sixth conductive tube 116 and a U-phase eighth conductive tube 118 are disposed in the space (slot) between the tenth tooth 2010 and the eleventh tooth 2011. A V-phase fifth conductive tube 125 and a V-phase seventh conductive tube 127 are disposed in the space (slot) between the eleventh tooth 2011 and the twelfth tooth 2012.A W-phase second conductive pipe 132 and a W-phase fourth conductive pipe 134 are arranged in the space (slot) between the twelfth tooth 2012 and the first tooth 2001 .

[0152] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0153] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0154] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0155] A U-phase one-end first connector 2111 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0156] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0157] A U-phase one-end second connector 2112 is connected to one end of the U-phase fourth conductive pipe 114 and one end of the U-phase fifth conductive pipe 115, and the U-phase fourth conductive pipe 114 and the U-phase fifth conductive pipe 115 are electrically connected.

[0158] The other end of the U-phase fifth conductive pipe 115 and the other end of the U-phase sixth conductive pipe 116 are connected to a U-phase other end third connector 2123, and the U-phase fifth conductive pipe 115 and the U-phase sixth conductive pipe 116 are electrically connected.

[0159] A U-phase one-end third connector 2113 is connected to one end of the U-phase sixth conductive pipe 116 and one end of the U-phase seventh conductive pipe 117, and the U-phase sixth conductive pipe 116 and the U-phase seventh conductive pipe 117 are electrically connected.

[0160] The other end of the U-phase seventh conductive pipe 117 and the other end of the U-phase eighth conductive pipe 118 are connected to a U-phase other end fourth connector 2124, and the U-phase seventh conductive pipe 117 and the U-phase eighth conductive pipe 118 are electrically connected.

[0161] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0162] A V-phase one-end first connector 2211 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123.

[0163] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0164] A V-phase one-end second connector 2212 is connected to one end of the V-phase fourth conductive pipe 124 and one end of the V-phase fifth conductive pipe 125, thereby electrically connecting the V-phase fourth conductive pipe 124 and the V-phase fifth conductive pipe 125.

[0165] A V-phase other end third connector 2223 is connected to the other end of the V-phase fifth conductive pipe 125 and the other end of the V-phase sixth conductive pipe 126, and the V-phase fifth conductive pipe 125 and the V-phase sixth conductive pipe 126 are electrically connected.

[0166] A V-phase one-end third connector 2213 is connected to one end of the V-phase sixth conductive pipe 126 and one end of the V-phase seventh conductive pipe 127, thereby electrically connecting the V-phase sixth conductive pipe 126 and the V-phase seventh conductive pipe 127.

[0167] A V-phase other end fourth connector 2224 is connected to the other end of the V-phase seventh conductive pipe 127 and the other end of the V-phase eighth conductive pipe 128, and the V-phase seventh conductive pipe 127 and the V-phase eighth conductive pipe 128 are electrically connected.

[0168] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0169] A W-phase one-end first connector 2311 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0170] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0171] A W-phase one-end second connector 2312 is connected to one end of the W-phase fourth conductive pipe 134 and one end of the W-phase fifth conductive pipe 135, thereby electrically connecting the W-phase fourth conductive pipe 134 and the W-phase fifth conductive pipe 135.

[0172] A W-phase other end third connector 2323 is connected to the other end of the W-phase fifth conductive pipe 135 and the other end of the W-phase sixth conductive pipe 136, and the W-phase fifth conductive pipe 135 and the W-phase sixth conductive pipe 136 are electrically connected.

[0173] A W-phase one-end third connector 2313 is connected to one end of the W-phase sixth conductive pipe 136 and one end of the W-phase seventh conductive pipe 137, thereby electrically connecting the W-phase sixth conductive pipe 136 and the W-phase seventh conductive pipe 137.

[0174] The other end of the W-phase seventh conductive pipe 137 and the other end of the W-phase eighth conductive pipe 138 are connected to a W-phase other end fourth connector 2324, so that the W-phase seventh conductive pipe 137 and the W-phase eighth conductive pipe 138 are electrically connected.

[0175] A neutral wire connector 240 is connected to one end of the U-phase eighth conductive pipe 118, one end of the V-phase eighth conductive pipe 128, and one end of the W-phase eighth conductive pipe 138, thereby electrically conducting the U-phase eighth conductive pipe 118, the V-phase eighth conductive pipe 128, and the W-phase eighth conductive pipe 138.

[0176] 29, the arrows indicate the direction of the heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 to the U-phase first conductive pipe 111, the U-phase third conductive pipe 113, the V-phase sixth conductive pipe 126, the V-phase eighth conductive pipe 128, the W-phase fifth conductive pipe 135, the W-phase seventh conductive pipe 137, the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase third conductive pipe 123, the W-phase sixth conductive pipe 136, the W-phase eighth conductive pipe 138, the U-phase The heat medium flows through any of the U-phase seventh conductive pipe 115, the U-phase seventh conductive pipe 117, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the U-phase sixth conductive pipe 116, the U-phase eighth conductive pipe 118, the V-phase fifth conductive pipe 125, the V-phase seventh conductive pipe 127, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, in the present embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0177] Next, the flow of electricity will be described. Figure 30 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 29. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be described. The electricity entering through the U-phase wire 11 passes through the following path: U-phase wire 11 → U-phase first conductive pipe 111 → U-phase other end side first connector 2121 → U-phase second conductive pipe 112 → U-phase one end side first connector 2111 → U-phase third conductive pipe 113 → U-phase other end side second connector 2122 → U-phase fourth conductive pipe 114 → U-phase one end side second connector 2112 → U-phase fifth conductive pipe 115 → U-phase other end side third connector 2123 → U-phase sixth conductive pipe 116 → U-phase one end side third connector 2113 → U-phase seventh conductive pipe 117 → U-phase other end side fourth connector 2124 → U-phase eighth conductive pipe 118 → middle The current flows as follows: electrical wire connector 240 → V-phase eighth conducting pipe 128 → V-phase other end side fourth connector 2224 → V-phase seventh conducting pipe 127 → V-phase one end side third connector 2213 → V-phase sixth conducting pipe 126 → V-phase other end side third connector 2223 → V-phase fifth conducting pipe 125 → V-phase one end side second connector 2212 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side first connector 2211 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0178] FIG. 31 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 29 . The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering from the V-phase wire 12 flows in the following order: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase other end side first connector 2221 → V-phase second conducting pipe 122 → V-phase one end side first connector 2211 → V-phase third conducting pipe 123 → V-phase other end side second connector 2222 → V-phase fourth conducting pipe 124 → V-phase one end side second connector 2212 → V-phase fifth conducting pipe 125 → V-phase other end side third connector 2223 → V-phase sixth conducting pipe 126 → V-phase one end side third connector 2213 → V-phase seventh conducting pipe 127 → V-phase other end side fourth connector 2224 → V-phase eighth conducting pipe 128 → center The current flows as follows: W-phase wire connector 240 → W-phase eighth conducting pipe 138 → W-phase other end side fourth connector 2324 → W-phase seventh conducting pipe 137 → W-phase one end side third connector 2313 → W-phase sixth conducting pipe 136 → W-phase other end side third connector 2323 → W-phase fifth conducting pipe 135 → W-phase one end side second connector 2312 → W-phase fourth conducting pipe 134 → W-phase other end side second connector 2322 → W-phase third conducting pipe 133 → W-phase one end side first connector 2311 → W-phase second conducting pipe 132 → W-phase other end side first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0179] FIG. 32 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 29 . The arrows indicate the direction of the flow of electricity. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. The electricity entering from the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conducting pipe 131 → W-phase other end side first connector 2321 → W-phase second conducting pipe 132 → W-phase one end side first connector 2311 → W-phase third conducting pipe 133 → W-phase other end side second connector 2322 → W-phase fourth conducting pipe 134 → W-phase one end side second connector 2312 → W-phase fifth conducting pipe 135 → W-phase other end side third connector 2323 → W-phase sixth conducting pipe 136 → W-phase one end side third connector 2313 → W-phase seventh conducting pipe 137 → W-phase other end side fourth connector 2324 → W-phase eighth conducting pipe 138 → middle The current flows as follows: U-phase connector 240 → U-phase eighth conductive pipe 118 → U-phase other end side fourth connector 2124 → U-phase seventh conductive pipe 117 → U-phase one end side third connector 2113 → U-phase sixth conductive pipe 116 → U-phase other end side third connector 2123 → U-phase fifth conductive pipe 115 → U-phase one end side second connector 2112 → U-phase fourth conductive pipe 114 → U-phase other end side second connector 2122 → U-phase third conductive pipe 113 → U-phase one end side first connector 2111 → U-phase second conductive pipe 112 → U-phase other end side first connector 2121 → U-phase first conductive pipe 111 → U-phase wire 11.

[0180] By configuring as in this embodiment described above, even in a two-turn 12N4P type rotating electrical machine, the heat transfer medium can flow inside each conductive tube, resulting in excellent cooling performance.

[0181] Furthermore, by using a two-turn type, it is possible to achieve a high voltage.

[0182] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but it is also possible to make it a three-turn type or a type with more turns by increasing the number of conductive tubes placed in the space (slot) between the teeth.

[0183] Eighth Embodiment FIG. 33 is a development view of a model of a rotating electrical machine according to an eighth embodiment.

[0184] The rotating electric machine of this eighth embodiment is a 6N2P type rotating electric machine in which conductive pipes are placed in the spaces (slots) between six teeth and which uses a two-pole rotor. Also, while the fifth embodiment was a one-turn type in which electricity makes only one circuit around the teeth, this eighth embodiment is a two-turn type in which electricity makes two circuits around the teeth.

[0185] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 33 , from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, and sixth teeth 2006.

[0186] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 and a U-phase third conductive tube 113 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. While FIG. 33 shows the U-phase first conductive tube 111 arranged on the first teeth 2001 side and the U-phase third conductive tube 113 arranged on the second teeth 2002 side, the reverse may be true: the U-phase third conductive tube 113 arranged on the first teeth 2001 side and the U-phase second conductive tube 112 arranged on the second teeth 2002 side. The U-phase first conductive tube 111 and the U-phase third conductive tube 113 may be arranged so as to overlap each other in the front-to-rear direction. The same applies below. A V-phase second conductive tube 122 and a V-phase fourth conductive tube 124 are arranged in the spaces (slots) between the second teeth 2002 and the third teeth 2003. A W-phase first conductive tube 131 and a W-phase third conductive tube 133 are arranged in the spaces (slots) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductive tube 112 and a U-phase fourth conductive tube 114 are arranged in the spaces (slots) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductive tube 121 and a V-phase third conductive tube 123 are arranged in the spaces (slots) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase second conductive tube 132 and a W-phase fourth conductive tube 134 are arranged in the spaces (slots) between the sixth teeth 2006 and the first teeth 2001.

[0187] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0188] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0189] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0190] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, thereby electrically connecting the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113.

[0191] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0192] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0193] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123.

[0194] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0195] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0196] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, thereby electrically connecting the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133.

[0197] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0198] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0199] 33 , the arrows indicate the direction of heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through one of the U-phase first conductive pipe 111, the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase third conductive pipe 123, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0200] Next, the flow of electricity will be described. Figure 34 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 33. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be described. Electricity entering from the U-phase wire 11 flows as follows: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end first connector 2121 → U-phase second conducting pipe 112 → U-phase one end connector 211 → U-phase third conducting pipe 113 → U-phase other end second connector 2122 → U-phase fourth conducting pipe 114 → neutral conductor connector 240 → V-phase fourth conducting pipe 124 → V-phase other end second connector 2222 → V-phase third conducting pipe 123 → V-phase one end connector 221 → V-phase second conducting pipe 122 → V-phase other end first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0201] FIG. 35 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 33 . The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering from the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase other end first connector 2221 → V-phase second conducting pipe 122 → V-phase one end connector 221 → V-phase third conducting pipe 123 → V-phase other end second connector 2222 → V-phase fourth conducting pipe 124 → neutral connector 240 → W-phase fourth conducting pipe 134 → W-phase other end second connector 2322 → W-phase third conducting pipe 133 → W-phase one end connector 231 → W-phase second conducting pipe 132 → W-phase other end first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0202] FIG. 36 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 33 . The arrows indicate the direction of electricity flow. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. Electricity entering from the W-phase wire 13 flows as follows: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase other end first connector 2321 → W-phase second conductive pipe 132 → W-phase one end connector 231 → W-phase third conductive pipe 133 → W-phase other end second connector 2322 → W-phase fourth conductive pipe 134 → neutral connector 240 → U-phase fourth conductive pipe 114 → U-phase other end second connector 2122 → U-phase third conductive pipe 113 → U-phase one end connector 211 → U-phase second conductive pipe 112 → U-phase other end first connector 2121 → U-phase first conductive pipe 111 → U-phase wire 11.

[0203] By configuring as in this embodiment described above, even in a two-turn, 6N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive tube, resulting in excellent cooling performance.

[0204] Moreover, by using a two-turn type, it is possible to increase the output.

[0205] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but it is also possible to make it a three-turn type or a type with more turns by increasing the number of conductive tubes placed in the space (slot) between the teeth.

[0206] Ninth Embodiment FIG. 37 is a development view of a model of a rotating electrical machine according to a ninth embodiment.

[0207] The rotating electric machine of this ninth embodiment is a 3N2P type rotating electric machine in which a conductive tube is placed in the space (slot) between three teeth and which uses a two-pole rotor. Also, while the sixth embodiment was a one-turn type in which electricity makes only one circuit around the teeth, this ninth embodiment is a two-turn type in which electricity makes two circuits around the teeth.

[0208] A plurality of teeth are provided protruding from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 37, from the left, there are first teeth 2001, second teeth 2002, and third teeth 2003.

[0209] Conductive tubes are arranged in the spaces (slots) between the teeth. The U-phase second conductive tube 112, the U-phase fourth conductive tube 114, the V-phase first conductive tube 121, and the V-phase third conductive tube 123 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. Note that in Fig. 37 , the U-phase second conductive tube 112 and the U-phase fourth conductive tube 114 are arranged on the first teeth 2001 side, and the V-phase first conductive tube 121 and the V-phase third conductive tube 123 are arranged on the second teeth 2002 side. However, conversely, the V-phase first conductive tube 121 and the V-phase third conductive tube 123 may be arranged on the first teeth 2001 side, and the U-phase second conductive tube 112 and the U-phase fourth conductive tube 114 may be arranged on the second teeth 2002 side. However, from the standpoint of efficiency, it is desirable that the U-phase second conductive pipe 112 and the U-phase fourth conductive pipe 114 are arranged on the first tooth 2001 side, and the V-phase first conductive pipe 121 and the V-phase third conductive pipe 123 are arranged on the second tooth 2002 side, as shown in Fig. 37 . The same applies below. The V-phase second conductive pipe 122 and the V-phase fourth conductive pipe 124, and the W-phase first conductive pipe 131 and the W-phase third conductive pipe 133 are arranged in the space (slot) between the second tooth 2002 and the third tooth 2003. The W-phase second conductive pipe 132 and the W-phase fourth conductive pipe 134, and the U-phase first conductive pipe 111 and the U-phase third conductive pipe 113 are arranged in the space (slot) between the third tooth 2003 and the first tooth 2001.

[0210] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to the one heat medium flow member 310.

[0211] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0212] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0213] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, thereby electrically connecting the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113.

[0214] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0215] The V-phase wire 12 is connected to one end of the V-phase first conducting pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conducting pipe 121 and the other end of the V-phase second conducting pipe 122, thereby electrically connecting the V-phase first conducting pipe 121 and the V-phase second conducting pipe 122.

[0216] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, thereby electrically connecting the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123.

[0217] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0218] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0219] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, thereby electrically connecting the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133.

[0220] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0221] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0222] 37 , the arrows indicate the direction of heat medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through one of the U-phase first conductive pipe 111, the U-phase third conductive pipe 113, the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase third conductive pipe 123, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0223] Next, the flow of electricity will be described. Figure 38 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 37. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be described. Electricity entering from the U-phase wire 11 flows as follows: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end first connector 2121 → U-phase second conducting pipe 112 → U-phase one end connector 211 → U-phase third conducting pipe 113 → U-phase other end second connector 2122 → U-phase fourth conducting pipe 114 → neutral conductor connector 240 → V-phase fourth conducting pipe 124 → V-phase other end second connector 2222 → V-phase third conducting pipe 123 → V-phase one end connector 221 → V-phase second conducting pipe 122 → V-phase other end first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0224] FIG. 39 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. 37 . The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering from the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conducting pipe 121 → V-phase other end first connector 2221 → V-phase second conducting pipe 122 → V-phase one end connector 221 → V-phase third conducting pipe 123 → V-phase other end second connector 2222 → V-phase fourth conducting pipe 124 → neutral conductor connector 240 → W-phase fourth conducting pipe 134 → W-phase other end second connector 2322 → W-phase third conducting pipe 133 → W-phase one end connector 231 → W-phase second conducting pipe 132 → W-phase other end first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0225] FIG. 40 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. 37 . The arrows indicate the direction of electricity flow. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. Electricity entering from the W-phase wire 13 flows as follows: W-phase wire 13 → W-phase first conductive pipe 131 → W-phase other end first connector 2321 → W-phase second conductive pipe 132 → W-phase one end connector 231 → W-phase third conductive pipe 133 → W-phase other end second connector 2322 → W-phase fourth conductive pipe 134 → neutral connector 240 → U-phase fourth conductive pipe 114 → U-phase other end second connector 2122 → U-phase third conductive pipe 113 → U-phase one end connector 211 → U-phase second conductive pipe 112 → U-phase other end first connector 2121 → U-phase first conductive pipe 111 → U-phase wire 11.

[0226] By configuring as in this embodiment described above, even in a two-turn, 3N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive tube, resulting in excellent cooling performance.

[0227] Moreover, by using a two-turn type, it is possible to increase the output.

[0228] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but it is also possible to make it a three-turn type or a type with more turns by increasing the number of conductive tubes placed in the space (slot) between the teeth.

[0229] 41 is an exploded view showing a rotating electrical machine according to a tenth embodiment of the present invention. In the following description, parts that perform the same functions as those described above will be given the same reference numerals, and redundant explanations will be omitted where appropriate.

[0230] In each of the above embodiments, the conductive tubes are placed in the spaces (slots) between the teeth of the stator core 20, and then the spaces (slots) between the teeth are sealed by applying a coating material to the inner circumferential side of the stator core 20. In contrast, the tenth embodiment differs from the second embodiment in that the spaces (slots) between the teeth are sealed by placing slot sealing collars 70 on the inner circumferential side of the stator core 20.

[0231] According to this structure, the slot sealing collar 70 is arranged on the inner periphery of the stator core 20 to seal the spaces (slots) between the teeth, resulting in even greater productivity than the second embodiment.

[0232] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments.

[0233] For example, in each of the above embodiments, the stator core is cylindrical, has multiple teeth protruding from the inner peripheral wall of the base, and has conductive tubes disposed in the spaces (slots) between the teeth. However, the stator core may be flat instead of cylindrical. It may also have multiple teeth protruding from the bottom surface, which serves as the base, and have conductive tubes disposed in the spaces (slots) between the teeth. In this way, the present invention can be applied to a linear motor.

[0234] Furthermore, in each of the above embodiments, the conductive tube 100 has been described as being flat, but it may also be cylindrical, as shown in FIG.

[0235] Furthermore, as shown in FIG. 43, it may be of a type in which a plurality of passages are formed.

[0236] Furthermore, the type of rotating electric machine is not limited. For example, the present invention can be applied to axial flux type rotating electric machines, SR rotating electric machines, induction rotating electric machines, synchronous rotating electric machines, etc. For example, by using liquid nitrogen or liquid helium as the heat transfer medium, a superconducting rotating electric machine can be created.

[0237] The heat transfer medium to be used may be a liquid insulating heat transfer medium, a gas such as air, or other suitable materials such as antifreeze, liquefied chlorofluorocarbons and halons, liquefied hydrocarbons, silicone oils, liquefied ammonia, liquefied nitrogen, liquefied hydrogen, liquefied rare gases, liquefied carbon dioxide, etc. For heat transfer mediums such as water, pure water with very low conductivity may be used, and additives such as corrosion inhibitors may be mixed in as appropriate.

[0238] Furthermore, by coating the inside of the conductive tube with an insulating film, it becomes possible to use a conductive heat medium, such as a water-based liquid.

[0239] By using a cryogenic heat medium such as liquid nitrogen or liquid helium as the heat medium and using a superconducting material for the conductive tube, a superconducting rotating electric machine can be made.

[0240] Furthermore, an ion exchange resin filter may be installed on the heat transfer medium path, which removes ions from the heat transfer medium, reduces the heat transfer medium's electrical conductivity, and increases its insulating properties, thereby minimizing electrical leakage in the unlikely event that a conductive heat transfer medium leaks.

[0241] As a method for supplying the heat medium, in addition to using power such as a pump to circulate the heat medium for cooling, a natural circulation system using gravity without using a pump, such as a heat pipe, may also be used.

[0242] There are various winding methods for motors, including concentrated winding, distributed winding, single-layer winding, two-layer winding, full-pitch winding, short-pitch winding, lap winding, concentric winding, and wave winding, and these are selected appropriately by combining each method during design.

[0243] In the above embodiment, the connector has the shape shown in Fig. 3. However, this shape is merely an example, and the shape of the connector is not critical. Furthermore, the connector may use a general conductor such as a magnet wire or a twisted wire.

[0244] If necessary, cooling from the outside of the stator core can also be performed.

[0245] The above embodiments can be combined as appropriate.

[0246] This application claims priority based on Japanese Patent Application No. 2024-148275, filed with the Japan Patent Office on August 30, 2024, the entire contents of which are incorporated herein by reference.

Claims

1. A stator core having a plurality of teeth protruding from a base portion; a first U-phase conductor tube that is electrically conductive and allows a heat medium to pass therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core to a length greater than the thickness of the stator core; a second U-phase conductor tube that is electrically conductive and allows a heat medium to pass therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core to a length greater than the thickness of the stator core; a U-phase wire that is electrically conductive and connected to one end of the first U-phase conductor tube that protrudes from the stator core; a U-phase connector that is electrically conductive and connected to the other end of the first U-phase conductor tube that protrudes from the stator core and the other end of the second U-phase conductor tube that protrudes from the stator core; a first V-phase conductor tube that is electrically conductive and allows a heat medium to pass therethrough, that is disposed in the space between the teeth, and that protrudes on both sides of the stator core to a length greater than the thickness of the stator core; a second V-phase conductor pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core to a length greater than the thickness of the stator core; a V-phase wire that is electrically conductive and connected to one end of the first V-phase conductor pipe that protrudes from the stator core; a V-phase connector that is electrically conductive and connected to the other end of the first V-phase conductor pipe that protrudes from the stator core and the other end of the second V-phase conductor pipe that protrudes from the stator core; a first W-phase conductor pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core to a length greater than the thickness of the stator core; a second W-phase conductor pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in the space between the teeth, and that protrudes to both sides of the stator core to a length greater than the thickness of the stator core; and a W-phase wire that is electrically conductive and connected to one end of the first W-phase conductor pipe that protrudes from the stator core. a W-phase connector that is electrically conductive and is connected to the other end of the first W-phase conductive pipe protruding from the stator core and the other end of the second W-phase conductive pipe protruding from the stator core;a neutral conductor that is electrically conductive and connected to one end of the second U-phase conductive pipe, one end of the second V-phase conductive pipe, and one end of the second W-phase conductive pipe protruding from the stator core; one heat medium flow member through which a heat medium can flow, that is disposed on one side of the stator core, and prevents the heat medium flowing in the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, the second V-phase conductive pipe, and the first W-phase conductive pipe, and the second W-phase conductive pipe from leaking to the outside from a contact point with the stator core; and the other heat medium flow member through which a heat medium can flow, that is disposed on the other side of the stator core, and prevents the heat medium flowing in the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, the second V-phase conductive pipe, and the first W-phase conductive pipe, and the second W-phase conductive pipe from leaking to the outside from a contact point with the stator core. An electrical energy to mechanical energy converter having:

2. A stator core having a plurality of teeth protruding from a base portion; a plurality of U-phase conductor tubes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core to a length greater than the thickness of the stator core; a plurality of U-phase connectors that are electrically conductive and connect one end or the other end of the plurality of U-phase conductor tubes protruding from the stator core together; a conductive U-phase wire that is connected to one end of one of the plurality of U-phase conductor tubes that does not have a U-phase connector connected to one end of the U-phase conductor tubes; a plurality of V-phase conductor tubes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core to a length greater than the thickness of the stator core; a plurality of V-phase connectors that are electrically conductive and connect one end or the other end of the plurality of V-phase conductor tubes protruding from the stator core together; and a conductive V-phase wire that is connected to one end of one of the plurality of V-phase conductor tubes that does not have a V-phase connector connected to one end of the V-phase conductor tubes a plurality of W-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core to a length greater than a thickness of the stator core; a plurality of W-phase connectors that are electrically conductive and connect one end or the other end of the plurality of W-phase conductive pipes that protrude from the stator core to each other; a conductive W-phase wire that is connected to one end of one of the plurality of W-phase conductive pipes, one end of which is not connected to the W-phase connector; a conductive neutral wire that is connected to one end of one of the plurality of U-phase conductive pipes, one end of which is not connected to the U-phase connector and the U-phase wire, one end of one of the plurality of V-phase conductive pipes, one end of which is not connected to the V-phase connector and the V-phase wire, and one end of one of the plurality of W-phase conductive pipes, one end of which is not connected to the W-phase connector and the W-phase wire;one heat medium flow member, through which a heat medium can flow, that is disposed on one side of the stator core and prevents the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking to the outside from a contact point with the stator core; and another heat medium flow member, through which a heat medium can flow, that is disposed on the other side of the stator core and prevents the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking to the outside from a contact point with the stator core.

3. A stator core having a plurality of teeth protruding from a base portion; a plurality of U-phase conductor tubes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core to a length greater than the thickness of the stator core; a plurality of U-phase connectors that are electrically conductive and connect one end or the other end of the plurality of U-phase conductor tubes that protrude from the stator core; a conductive U-phase wire that is connected to one end of one of the plurality of U-phase conductor tubes, the U-phase connector being connected to both one end and the other end of which of the plurality of U-phase conductor tubes; a plurality of V-phase conductor tubes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude on both sides of the stator core to a length greater than the thickness of the stator core; a plurality of V-phase connectors that are electrically conductive and connect one end or the other end of the plurality of V-phase conductor tubes that protrude from the stator core a V-phase wire that is electrically conductive and connected to one end of one of the plurality of V-phase conductive pipes, the V-phase connector being connected to both one end and the other end; a plurality of W-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are arranged in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core to a length greater than the thickness of the stator core; a plurality of W-phase connectors that are electrically conductive and connected to one end or the other end of the plurality of W-phase conductive pipes that protrude from the stator core; a W-phase wire that is electrically conductive and connected to one end of one of the plurality of W-phase conductive pipes, the W-phase connector being connected to both one end and the other end; a neutral wire that is electrically conductive and connected to one end of a U-phase conductive pipe that has the U-phase connector connected to only the other end of the plurality of U-phase conductive pipes, one end of a V-phase conductive pipe that has the V-phase connector connected to only the other end of the plurality of V-phase conductive pipes, and one end of a W-phase conductive pipe that has the W-phase connector connected to only the other end of the plurality of W-phase conductive pipes;one heat medium flow member, through which a heat medium can flow, that is disposed on one side of the stator core and prevents the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking to the outside from a contact point with the stator core; and another heat medium flow member, through which a heat medium can flow, that is disposed on the other side of the stator core and prevents the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking to the outside from a contact point with the stator core.

4. An electrical energy-mechanical energy converter according to any one of claims 1 to 3, comprising a sealant provided on the inner periphery of the stator core to seal the spaces between the teeth.

5. An electrical energy-mechanical energy converter according to claim 4, wherein the sealing material is a coating material applied to the inner circumferential side of the stator core.

6. An electrical energy-mechanical energy converter according to claim 4, wherein the sealing material is a slot sealing member disposed on the inner circumferential side of the stator core.

7. An electrical energy-mechanical energy converter as set forth in claim 4, wherein one of the heat medium flow members is connected to one of the flow pipes through which the heat medium flows, and the other of the heat medium flow members is connected to the other of the flow pipes through which the heat medium flows.

8. An electrical energy-mechanical energy converter as set forth in claim 2 or claim 3, wherein the interior of one of the heat medium flow members is divided into two sections by a pair of partitions, one of the heat medium flow pipes is connected to one section, and the other of the heat medium flow pipes is connected to the other section, and some of the multiple conductive pipes are arranged on the side of one section, and the remainder are arranged on the side of the other section.

Images