WO2022264318A1 - 圧縮機用電動機、圧縮機、冷凍サイクル装置及び圧縮機用電動機の製造方法 - Google Patents
圧縮機用電動機、圧縮機、冷凍サイクル装置及び圧縮機用電動機の製造方法 Download PDFInfo
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- WO2022264318A1 WO2022264318A1 PCT/JP2021/022891 JP2021022891W WO2022264318A1 WO 2022264318 A1 WO2022264318 A1 WO 2022264318A1 JP 2021022891 W JP2021022891 W JP 2021022891W WO 2022264318 A1 WO2022264318 A1 WO 2022264318A1
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- wire
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- end portion
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/187—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
Definitions
- the present disclosure relates to a compressor motor having a plurality of electric wires, a compressor, a refrigeration cycle device, and a method for manufacturing a compressor motor.
- a compressor motor (hereinafter referred to as a motor) includes a plurality of electric wires that form the windings of a stator.
- these electric wires are joined together, and the joints are wrapped with an insulating material such as insulating paper.
- an assembly of a plurality of electric wires joined together see, for example, Patent Literature 1).
- the assembly of Patent Document 1 is configured by joining a first exposed core wire portion exposed from a first covering portion of a first electric wire and a second exposed core wire portion exposed from a second covering portion of a second electric wire.
- Patent Document 1 the state in which the second exposed core wire portion is arranged between the first exposed core wire portions bent in a U shape, or the first exposed portion on the outer circumference of the portion of the second exposed core wire portion excluding the tip portion The first exposed core wire portion and the second exposed core wire portion are joined while the core wire portion is spirally wound.
- the tip surface of the first exposed core wire portion becomes wider than the vicinity of the tip due to the force applied when cutting the first electric wire, and protrusions are generated on both sides in the width direction of the tip surface.
- the tip surface of the second exposed core wire portion becomes wider than the vicinity of the tip due to the force applied when cutting the second electric wire, and protrusions are generated on both sides in the width direction. Therefore, in the configuration in which the second exposed core wire portion is arranged between the first exposed core wire portions bent in a U-shape as disclosed in Patent Document 1, the center of the tip surface in the width direction is the second exposed core wire portion.
- the protrusions on both sides in the width direction of the tip surface protrude from the second exposed core wire portion.
- the present disclosure has been made to solve the problems described above, and aims to provide a compressor motor that suppresses insulation failure, a compressor, a refrigeration cycle device, and a method for manufacturing a compressor motor. do.
- a compressor electric motor is a compressor electric motor including a stator having stator windings, wherein one end of a plurality of first electric wires is twisted together in the stator windings.
- a first wire bundle having a configured wire bundle-like first end and having a first end surface at the tip of the first end, and a plurality of second wires, the first wire bundle of the first wire bundle a second wire bundle having a second end spirally wound at one end; and an insulating material enclosing the first end and the second end, the second end comprising:
- the first wire bundle is wound so as to cover the edge of the first end face, the second wire bundle has a second end face at the tip of the second end, and the second wire bundle has a second end face at the tip of the second end.
- the second end surface is positioned within a circular outline formed by the outer peripheral surface of the second end portion.
- a compressor according to the present disclosure includes the above-described compressor electric motor, a compression element that is driven by the compressor electric motor and compresses fluid sucked from the outside, and houses the compressor electric motor and the compression element. and a closed container for
- a refrigeration cycle apparatus includes the compressor described above, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger.
- a method for manufacturing a compressor electric motor has a wire bundle-like first end configured by twisting together one ends of a plurality of first electric wires, and a tip end of the first end a first wire bundle having a first end surface in the second wire bundle, and a second wire bundle including a plurality of second wires and having a second end spirally wound around the first end of the first wire bundle and an insulating material enclosing the first end and the second end, the method for manufacturing a compressor motor having a stator winding comprising: , the first wire bundle is wound so as to cover the edge of the first end face, and the second end face at the tip of the second end part is a circular shape formed by the outer peripheral face of the second end part A pressurizing step of applying pressure from the outside to the outer peripheral surface of the second end while being positioned within the outer shape.
- the second end is wound around the first end including the first end surface where protrusions are likely to occur, and the second end is wound so as to cover the edge of the first end surface.
- the end face is positioned within a circular outline formed by the outer peripheral surface of the second end. Therefore, the projection is prevented from breaking through the insulating material at the junction between the first end and the second end, so insulation failure can be prevented.
- FIG. 4 is a circuit diagram showing a refrigerant circuit during cooling operation in the refrigeration cycle apparatus according to Embodiment 1;
- FIG. 4 is a circuit diagram showing a refrigerant circuit during heating operation in the refrigeration cycle apparatus according to Embodiment 1.
- FIG. FIG. 2 is a longitudinal sectional view showing the configuration of the compressor shown in FIG. 1;
- FIG. 4 is a plan view showing a schematic configuration of a stator of the electric motor shown in FIG. 3; 4 is a layout diagram of fixed windings in the stator of the electric motor shown in FIG. 3;
- FIG. FIG. 6 is a connection diagram of the fixed winding portion shown in FIG. 5;
- FIG. 6 is a view of a state in which the other end of the stator winding shown in FIG.
- FIG. 5 is covered with an insulating material, viewed from the outer peripheral surface side;
- FIG. 8 is a view showing only the second end when the joint shown in FIG. 7 is viewed from the tip side;
- FIG. 8 is a diagram showing only a second end portion of the joint portion of the stator windings of the electric motor according to Embodiment 2 when viewed from the tip end side;
- FIG. 10 is a diagram of a state in which the other end of the stator winding of the electric motor according to Embodiment 3 is covered with an insulating material, viewed from the outer peripheral surface side;
- FIG. 1 is a circuit diagram showing a refrigerant circuit 11 during cooling operation in a refrigeration cycle apparatus 10 according to Embodiment 1.
- FIG. 2 is a circuit diagram showing refrigerant circuit 11 during heating operation in refrigeration cycle apparatus 10 according to Embodiment 1. As shown in FIG. In FIG. 1, solid line arrows indicate the direction in which the refrigerant flows during cooling operation, and in FIG. 2, broken line arrows indicate the direction in which the refrigerant flows during heating operation.
- the configuration of the refrigeration cycle device 10 will be described based on FIGS. 1 and 2.
- FIG. The refrigeration cycle device 10 includes a refrigerant circuit 11 through which refrigerant circulates.
- the refrigerating cycle device 10 is described as an air conditioner, but the refrigerating cycle device 10 may be a device other than an air conditioner, such as a heat pump cycle device.
- the refrigerant circuit 11 is formed by connecting a compressor 12, an outdoor heat exchanger 14, a decompression device 15, an indoor heat exchanger 16, and the like with refrigerant pipes.
- the compressor 12 compresses the refrigerant and circulates it through the refrigerant circuit 11 .
- the outdoor heat exchanger 14 and the indoor heat exchanger 16 exchange heat between refrigerant and air.
- the decompression device 15 is composed of, for example, an expansion valve, and expands and decompresses the refrigerant.
- the refrigerant circuit 11 has a channel switching device 13.
- the channel switching device 13 switches the channel of the refrigerant discharged from the compressor 12, and is configured by, for example, a four-way valve.
- the passage switching device 13 switches between cooling and heating.
- the refrigeration cycle device 10 includes a control device 17 that controls various actuators.
- the control device 17 is composed of, for example, a microcomputer having a CPU (Central Processing Unit) and memory. Specifically, the control device 17 controls the frequency of the compressor 12, the degree of opening of the decompression device 15, switching of the flow path switching device 13, and the like.
- the cooling operation as shown in FIG. 1, the refrigerant discharged from the compressor 12 flows through the outdoor heat exchanger 14, the pressure reducing device 15, and the indoor heat exchanger 16 in order, and returns to the compressor 12.
- the heating operation as shown in FIG.
- the refrigerant discharged from the compressor 12 flows through the indoor heat exchanger 16, the pressure reducing device 15, and the outdoor heat exchanger 14 in order and returns to the compressor 12. That is, the outdoor heat exchanger 14 functions as a condenser during indoor cooling, the indoor heat exchanger 16 functions as an evaporator, and the indoor heat exchanger 16 functions as a condenser during indoor heating. 14 functions as an evaporator. Therefore, the indoor heat exchanger 16 heats the indoor air by releasing heat from the refrigerant compressed by the compressor 12 during heating, and cools the indoor air by allowing the refrigerant expanded by the pressure reducing device 15 to absorb heat during cooling.
- HFC HydroFluoroCarbon refrigerants
- R32, R125, R134a, R407C, and R410A are used as the refrigerant circulating in the refrigerant circuit 11.
- HFO HydroFluoroOlefin refrigerants
- R1123, R1132(E), R1132(Z), R1132a, R1141, R1234yf, R1234ze(E), and R1234ze(Z) are used as refrigerants.
- natural refrigerants such as R290 (propane), R600a (isobutane), R744 (carbon dioxide), and R717 (ammonia) are used as refrigerants.
- other refrigerants are used.
- mixtures of two or more of these refrigerants may be used.
- the configuration of the refrigerant circuit 11 is not limited to the configuration described above.
- the channel switching device 13 can be omitted.
- FIG. 3 is a vertical cross-sectional view showing the configuration of the compressor 12 shown in FIG.
- the configuration of the compressor 12 will be described below with reference to FIG. 3 assuming that the compressor 12 is a one-cylinder closed rotary compressor. Note that the present disclosure can be applied even if the compressor 12 is a multi-cylinder rotary compressor or a scroll compressor.
- the compressor 12 includes a closed container 20, a compression element 30, an electric motor 40 (compressor electric motor), and a crankshaft 50.
- the airtight container 20 has a configuration in which an upper lid 20a, a tubular body 20c, and a lower lid 20b are joined together.
- a suction pipe 21 for sucking the refrigerant is attached to the cylindrical body portion 20c, and a discharge pipe 22 for discharging the refrigerant is attached to the upper lid 20a.
- the discharge pipe 22 is attached to the top of the sealed container 20, that is, the upper surface of the upper lid 20a, and is open at both ends in the axial direction (direction of arrow Z).
- the compression element 30 and the electric motor 40 are housed in the sealed container 20 , the compression element 30 compresses the refrigerant sucked into the suction pipe 21 and discharges it, and the electric motor 40 drives the compression element 30 .
- the compression element 30 is installed inside the closed container 20 at the lower part, and the electric motor 40 is installed above the compression element 30 .
- the gas refrigerant discharged from the compression element 30 is discharged into and filled in the sealed space in the sealed container 20, and then passes through the discharge pipe 22 provided in the upper lid 20a of the sealed container 20 to the external refrigerant circuit 11 (for example, condenser).
- the electric motor 40 may be installed at a position in the sealed container 20 through which the refrigerant compressed by the compression element 30 passes before being discharged from the discharge pipe 22 .
- Refrigerant oil 25 for lubricating the sliding portion of the compression element 30 is stored in the bottom of the sealed container 20 .
- the refrigerator oil 25 for example, POE (polyol ester), PVE (polyvinyl ether), or AB (alkylbenzene), which are synthetic oils, are used.
- a terminal portion 24 that connects to an external power source (not shown) is attached to the top of the sealed container 20, that is, the upper surface of the upper lid 20a.
- the terminal portion 24 has a plurality of terminals 24a, and each terminal 24a is composed of, for example, a glass terminal.
- the terminal portion 24 is fixed to the sealed container 20 by, for example, welding.
- a lead wire 45 from the electric motor 40 in the sealed container 20 is connected to the terminal 24a.
- the lead wire 45 is fixed to a terminal 24 a such as a glass terminal, and is insulated from the sealed container 20 .
- the compression element 30 includes a cylinder 31 attached to the inner periphery of the cylindrical body portion 20c of the sealed container 20, a rolling piston 32, vanes (not shown), a main bearing 33, and a sub-bearing .
- the cylinder 31 is composed of a flat plate.
- the outer circumference of the cylinder 31 has a substantially circular shape in plan view.
- a cylinder chamber 31a which is a substantially circular space in plan view, is formed.
- both ends in the axial direction (arrow Z direction) of the cylinder chamber 31a are open.
- a rolling piston 32 is arranged in the cylinder chamber 31a.
- the cylinder 31 is provided with vane grooves (not shown) communicating with the cylinder chamber 31a and extending in the radial direction. Further, in the cylinder 31, a back pressure chamber, which communicates with the vane groove and is a substantially circular space in a plan view, is formed radially outside the vane groove.
- the cylinder 31 is provided with an intake port (not shown) through which gas refrigerant is sucked from the refrigerant circuit 11 (for example, an evaporator).
- the intake port penetrates from the outer peripheral surface of the cylinder 31 to the cylinder chamber 31a.
- the cylinder 31 is provided with a discharge port (not shown) through which the compressed refrigerant is discharged from the cylinder chamber 31a.
- the discharge port is formed by notching the upper end surface of the cylinder 31 .
- the rolling piston 32 has a ring shape.
- the rolling piston 32 is slidably fitted to the eccentric shaft portion 51 of the crankshaft 50 and rotates eccentrically within the cylinder chamber 31a. As the rolling piston 9 rotates eccentrically within the cylinder chamber 31a, the eccentric shaft portion 51 of the crankshaft 50 eccentrically rotates within the cylinder chamber 31a.
- the vanes have a flat, substantially rectangular parallelepiped shape.
- the vanes are installed in vane grooves of the cylinder 31 .
- the vane is always pressed against the rolling piston 32 by a vane spring (not shown) provided in the back pressure chamber. Since the inside of the sealed container 20 is at a high pressure, when the compressor 12 starts to operate, a pressure difference between the pressure inside the closed container 20 and the pressure inside the cylinder chamber 31a is applied to the back surface of the vane (that is, the surface on the back pressure chamber side). force acts. On the other hand, when there is no pressure difference between the inside of the sealed container 20 and the inside of the cylinder chamber 31a, such as when the compressor 12 is started, the vane is pressed against the rolling piston 32 by the vane spring. In this manner, the cylinder chamber 31a is divided into a low-pressure suction chamber and a high-pressure compression chamber.
- the main bearing 33 has a substantially inverted T shape when viewed from the side.
- the main bearing 33 is slidably fitted to a main shaft portion 52 which is a portion above the eccentric shaft portion 51 of the crankshaft 50 .
- the main bearing 33 closes the cylinder chamber 31a of the cylinder 31 and the upper side of the vane groove.
- the sub-bearing 34 has a substantially inverted T shape when viewed from the side.
- the secondary bearing 34 is slidably fitted to a secondary shaft portion 53 that is a portion of the crankshaft 50 below the eccentric shaft portion 51 .
- the secondary bearing 34 blocks the cylinder chamber 31a of the cylinder 31 and the lower side of the vane groove.
- a discharge port (not shown) is provided in the main bearing 33 .
- a discharge port of the cylinder 31 communicates with a discharge port formed in the main bearing 33, and the discharge port is provided with a discharge valve (not shown) that opens when the pressure inside the cylinder chamber 13a exceeds a predetermined value.
- a discharge muffler 35 is attached to the main bearing 33 so as to cover the discharge valve. The high-temperature and high-pressure gas refrigerant discharged through the discharge valve once enters the discharge muffler 35 and is then discharged from the discharge muffler 35 into the space inside the sealed container 20 .
- the discharge valve and discharge muffler 35 may be provided on the sub-bearing 34 or may be provided on both the main bearing 33 and the sub-bearing 34 .
- the material of the cylinder 31, the main bearing 33, and the sub-bearing 34 is, for example, gray cast iron, sintered steel, or carbon steel.
- the material of the rolling piston 32 is, for example, alloy steel containing chromium or the like.
- the material of the vane is, for example, high speed tool steel.
- a suction muffler 23 is provided beside the sealed container 20 .
- the suction muffler 23 draws in low-pressure gas refrigerant from the refrigerant circuit 11 (for example, an evaporator).
- the suction muffler 23 prevents the liquid refrigerant from directly entering the cylinder chamber 31 a of the cylinder 31 when the liquid refrigerant returns to the compressor 12 .
- the intake muffler 23 is connected to the intake port of the cylinder 31 via the intake pipe 21 .
- the main body of the suction muffler 23 is fixed to the side surface of the sealed container 20 by welding or the like.
- FIG. 4 is a plan view showing a schematic configuration of the stator 41 of the electric motor 40 shown in FIG.
- FIG. 5 is a layout diagram of the stator windings 44 in the stator 41 of the electric motor 40 shown in FIG. Details of the electric motor 40 will be described below with reference to FIGS. 3 to 5.
- FIG. 4 is a plan view showing a schematic configuration of the stator 41 of the electric motor 40 shown in FIG.
- FIG. 5 is a layout diagram of the stator windings 44 in the stator 41 of the electric motor 40 shown in FIG. Details of the electric motor 40 will be described below with reference to FIGS. 3 to 5.
- FIG. 4 is a plan view showing a schematic configuration of the stator 41 of the electric motor 40 shown in FIG.
- FIG. 5 is a layout diagram of the stator windings 44 in the stator 41 of the electric motor 40 shown in FIG. Details of the electric motor 40 will be described below with reference to FIGS. 3 to 5.
- FIG. 4 is a plan view showing a schematic configuration of
- the electric motor 40 is assumed to be an induction motor. Note that the present disclosure can be applied even if the electric motor 40 is a motor other than an induction motor, such as a brushless DC (Direct Current) motor.
- a brushless DC (Direct Current) motor such as a brushless DC (Direct Current) motor.
- the electric motor 40 includes a stator 41 and a rotor 42.
- the stator 41 has a substantially cylindrical shape and is fixed in contact with the inner peripheral surface of the sealed container 20 .
- the rotor 42 has a cylindrical shape and is installed inside the stator 41 with a gap of about 0.3 to 1 mm.
- the stator 41 includes a stator core 43 and stator windings 44 .
- the stator core 43 is composed of a plurality of electromagnetic steel plates. Specifically, the stator core 43 is made by stamping a plurality of electromagnetic steel sheets with a thickness of 0.1 to 1.5 mm into a predetermined shape, laminating them in the axial direction (direction of arrow Z), and crimping or welding them. It is made fixed.
- each notch 43b forms a space between it and the inner surface of the cylindrical body 20c of the closed container 20, and this space extends from the discharge muffler 35 to the inside of the closed container 20. It is one of the passages to the discharge pipe 22 for the gas refrigerant discharged into the space.
- Each notch 43 b also serves as a passage for the refrigerating machine oil 25 returning from the top of the electric motor 40 to the bottom of the sealed container 20 .
- the stator core 43 has a cylindrical yoke portion 43y and tooth portions 43t extending from the inner peripheral surface of the yoke portion 43y toward the rotation axis Ax.
- a plurality of tooth portions 43t are provided at regular intervals in the circumferential direction (direction of arrow R), and slots 43a are formed between adjacent tooth portions 43t.
- the stator winding 44 is configured by winding windings around a plurality of tooth portions 43t formed in the stator core 43, some of which are arranged in the slots 43a.
- a lead wire 45 is connected to the stator winding 44, and the lead wire 45 connects the stator winding 44 and the terminal 24a.
- the electric motor 40 is a three-phase electric motor supplied with electric power from an external three-phase power supply, and three lead wires 45 are connected to the stator winding 44 .
- the terminal section 24 provided in the sealed container 20 has three terminals 24a corresponding to the V-phase, W-phase and U-phase of the three-phase power supply.
- Each of the lead wires 45 is configured to connect the winding portion of the stator winding 44 and the terminal 24a.
- the three lead wires 45 are distinguished by reference numerals.
- the lead wire connected to the terminal 24a corresponding to the V phase of the three-phase power supply may be referred to as the V-phase lead wire 45v.
- the lead wire connected to the terminal 24a corresponding to the W phase may be called the W phase lead wire 45w
- the lead wire connected to the terminal 24a corresponding to the U phase may be called the U phase lead wire 45u.
- stator 41 In the stator 41, a plurality of magnetic poles rotating in the circumferential direction of the yoke portion 43y are generated in the teeth portion 43t as the stator winding 44 is energized, thereby generating a rotating magnetic field.
- the rotor 42 includes a substantially cylindrical rotor core 46 extending in the axial direction (direction of arrow Z), rod-shaped conductors 48 extending in the axial direction, and an axis of the rotor core 46 . and annular end rings 47 provided on both sides in the direction to short-circuit the plurality of conductors 48 .
- a plurality of rotor slots 46a are formed in the outer peripheral portion of the rotor core 46 in the circumferential direction (direction of arrow R), and conductors 48 are accommodated in each rotor slot 46a.
- the rotor core 46 is composed of a plurality of electromagnetic steel sheets. Specifically, similarly to the stator core 43, the rotor core 46 is made by punching a plurality of electromagnetic steel sheets with a thickness of 0.1 to 1.5 mm into a predetermined shape, laminating them in the axial direction, and caulking or It is manufactured by being fixed by welding or the like.
- the conductor 48 is made of a conductive material such as aluminum.
- the conductor 48 can be made of copper, for example.
- the conductor 48 is filled or inserted into each of a plurality of rotor slots 46 a formed in the rotor core 46 in the circumferential direction.
- the end ring 47 short-circuits both axial ends of the plurality of conductors 48 .
- the rotor core 46 is formed with a plurality of through holes (not shown) penetrating substantially in the axial direction. It is one of the passages to the discharge pipe 22 of the gas refrigerant discharged from the muffler 35 to the space inside the sealed container 20 .
- the rotor 42 is, for example, an aluminum die-cast squirrel cage rotor.
- Aluminum die casting is a casting method in which a mold is filled with molten metal such as an aluminum alloy at high speed and cast under high pressure.
- a squirrel cage rotor is formed by casting a conductive material such as aluminum into the rotor slot 46a by die casting or the like and molding. Note that the configuration of the rotor 42 is not limited to the above.
- the rotor is driven by the force generated by the interaction between the current induced from the stator windings 44 provided in the stator 41 to the conductors 48 of the rotor 42 and the rotating magnetic field generated in the stator 41 . 42 rotates around the rotation axis Ax.
- the electric motor 40 is a brushless DC motor (not shown)
- permanent magnets are inserted into a plurality of rotor slots 46 a formed in the rotor core 46 instead of the conductors 48 .
- Ferrite magnets or rare earth magnets, for example, are used as permanent magnets.
- end rings 47 are provided at both ends of the rotor core 46 in the axial direction to prevent the permanent magnets from slipping out in the axial direction (direction of arrow Z). Instead, a top plate and a bottom plate are provided. The upper end plate and the lower end plate are fixed to the rotor core 46 with a plurality of fixing rivets or the like.
- the upper end plate and the lower end plate are made of a non-magnetic material to prevent the permanent magnets from falling off and to prevent leakage magnetic flux from occurring. Moreover, the upper end plate and the lower end plate also serve as a rotary balancer.
- the rotor 42 is rotated along the rotation axis Ax by applying a current to the stator winding 44 so that the magnetic field of the permanent magnet of the rotor 42 and the magnetic field of the stator winding 44 are orthogonal to each other. rotate around.
- the refrigerant is sucked from the intake muffler 23 by gradually increasing the volume. Further, in the other of the two spaces, the volume is gradually reduced, thereby compressing the gas refrigerant therein.
- the compressed gas refrigerant is once discharged from the discharge muffler 35 into the sealed space in the closed container 20, and the discharged gas refrigerant passes through the electric motor 40 and flows from the discharge pipe 22 at the top of the closed container 20 to the closed container 20. is discharged out of the In the closed space within the closed container 20, there are the stator windings 44, the connection portions and joint portions of the lead wires 45, which are covered with an insulating material but are exposed to the gaseous refrigerant.
- FIG. 6 is a connection diagram of the stator windings 44 shown in FIG.
- the configuration of the stator winding 44 will be described below with reference to FIGS. 5 and 6, taking as an example the case where the motor 40 is a three-phase motor and the stator winding 44 is an assembly of three independent winding portions. explain.
- the stator winding 44 has a U-phase winding portion 61, a V-phase winding portion 62, and a W-phase winding portion 63.
- One end side of the U-phase winding portion 61 is connected to the U-phase lead wire 45u by a bonding material or the like.
- one end side of the V-phase winding portion 62 is connected to the V-phase lead wire 45v
- one end side of the W-phase winding portion 63 is connected to the W-phase lead wire 45w.
- a joint portion 63 a between the one end side and the W-phase lead wire 45 w is arranged on the terminal portion 24 side of the stator 41 , ie, above.
- a wiring board for terminal processing may be installed on the upper end of the stator 41, and the winding portions of the stator windings 44 and the lead wires 45 may be joined to each other on the wiring board.
- a junction 70 that electrically connects the U-phase winding portion 61, the V-phase winding portion 62, and the W-phase winding portion 63 to each other has a neutral point 70a (see FIG. 6) where the voltage is always zero. ).
- an insulating material 71 covering the joint portion 70 is provided at the other end portion 44a including the joint portion 70 in the stator winding 44 .
- Joints 70 coated with insulating material 71 are embedded and fixed between windings of stator winding 44 .
- an intermediate portion between one end side and the other end side is wound around the tooth portion 43t of the stator 41. are arranged in slots 43a and the like.
- each of the U-phase winding portion 61, the V-phase winding portion 62, and the W-phase winding portion 63 is composed of two windings, one of which is a copper wire. and the other electric wire of the two windings is made of an aluminum wire.
- the U-phase winding portion 61 is composed of a U-phase copper wire 64 and a U-phase aluminum wire 65 .
- the V-phase winding portion 62 is composed of a V-phase copper wire 66 and a V-phase aluminum wire 67
- the W-phase winding portion 63 is composed of a W-phase copper wire 68 and a W-phase aluminum wire 69.
- the configuration of each winding portion is not particularly limited to this.
- each winding portion may have two windings made of copper wire, or two windings made of aluminum wire. Anything is fine.
- the U-phase copper wire 64, U-phase aluminum wire 65, V-phase copper wire 66, V-phase aluminum wire 67, W-phase copper wire 68, and W-phase aluminum wire 69 each have four coils.
- the U-phase copper wire 64 is composed of four series-connected U-phase copper wire coils 64a to 64d
- the U-phase aluminum wire 65 is composed of four series-connected U-phase aluminum wire coils 65a to 64d. 65d.
- the V-phase copper wire 66 is composed of four series-connected V-phase copper wire coils 66a-66d
- the V-phase aluminum wire 67 is composed of four series-connected V-phase aluminum wire coils 67a-67d. ing.
- the W-phase copper wire 68 is composed of four series-connected W-phase copper wire coils 68a-68d
- the W-phase aluminum wire 69 is composed of four series-connected W-phase aluminum wire coils 69a-69d. It is configured.
- the terminal wire of the U-phase copper wire 64 and the terminal wire of the U-phase aluminum wire 65 are each connected to the neutral point 70a.
- the terminal wire of the V-phase copper wire 66 and the terminal wire of the V-phase aluminum wire 67 are each connected to the neutral point 70a.
- the terminal wire of the W-phase copper wire 68 and the terminal wire of the W-phase aluminum wire 69 are each connected to the neutral point 70a.
- the terminal wire of the U-phase copper wire 64 is the terminal wire of the U-phase copper wire coil 64d
- the terminal wire of the U-phase aluminum wire 65 is the terminal wire of the U-phase aluminum wire coil 65d
- the terminal wire of the V-phase copper wire 66 is the terminal wire of the V-phase copper wire coil 66d
- the terminal wire of the V-phase aluminum wire 67 is the terminal wire of the V-phase aluminum wire coil 67d
- the terminal wire of the W-phase copper wire 68 is the terminal wire of the W-phase copper wire coil 68d
- the terminal wire of the W-phase aluminum wire 69 is the terminal wire of the W-phase aluminum wire coil 69d.
- the terminal wire of the U-phase copper wire 64 may be referred to as the U-phase copper wire terminal wire 64e
- the terminal wire of the U-phase aluminum wire 65 may be referred to as the U-phase aluminum wire terminal wire 65e.
- the terminal wire of the V-phase copper wire 66 may be called the V-phase copper wire terminal wire 66e
- the terminal wire of the V-phase aluminum wire 67 may be called the V-phase aluminum wire terminal wire 67e.
- the end wire of the W-phase copper wire 68 may be called the W-phase copper wire end wire 68e
- the end wire of the W-phase aluminum wire 69 may be called the W-phase aluminum wire end wire 69e.
- the U-phase copper wire terminal wire 64 e and the U-phase aluminum wire terminal wire 65 e are pulled out from the same slot 43 a of the stator 41 .
- the V-phase copper wire terminal wire 66e and the V-phase aluminum wire terminal wire 67e are pulled out from a slot 43a different from the slot 43a in which the U-phase copper wire terminal wire 64e is arranged.
- the W-phase copper wire terminal wire 68e and the W-phase aluminum wire terminal wire 69e are connected to the slot 43a in which the U-phase copper wire terminal wire 64e and the like are arranged and the slot 43a in which the V-phase copper wire terminal wire 66e and the like are arranged. It is pulled out from a slot 43a different from 43a.
- the drawn terminal wires are bundled with an insulating material 71 in a certain section including the joint portion 70 to constitute the other end portion 44 a of the stator winding 44 .
- the insulating material 71 is made of, for example, insulating paper.
- the insulating material 71 is made of an insulating material such as PET (polyethylene terephthalate).
- the insulating material 71 includes a U-phase copper wire end wire 64e, a U-phase aluminum wire end wire 65e, a V-phase copper wire end wire 66e, a V-phase aluminum wire end wire 67e, a W-phase copper wire end wire 68e, and a W-phase aluminum wire.
- a portion of the terminal wire 69e on the joint portion 70 side is bundled, and the neutral point 70a (FIG. 6) is insulated.
- the insulating material 71 covers the outer peripheral surface and the tip end surface of the other end portion 44 a of the stator winding 44 .
- the configuration of the insulating material 71 is not limited to the above.
- an elastic insulating tube may be used as the insulating material 71 that insulates the neutral point 70a.
- the work process for contracting the insulating material 71 such as applying pressure from the outside, is not required. Greater efficiency.
- FIG. 7 is a view of the state in which the other end portion 44a of the stator winding 44 shown in FIG.
- FIG. 8 is a diagram showing only the second end portion 91 when the joint portion 70 shown in FIG. 7 is viewed from the tip side.
- the configuration of the other end portion 44a of the stator winding 44 including the joint portion 70 will be described below with reference to FIGS. 7 and 8.
- FIG. 8 is a diagram showing only the second end portion 91 when the joint portion 70 shown in FIG. 7 is viewed from the tip side.
- the three copper wire end wires namely the U-phase copper wire end wire 64e, the V-phase copper wire wire end wire 66e, and the W-phase copper wire wire end wire 68e, are twisted together as the first wire.
- a bundle 80 is formed.
- Three aluminum wire end wires, that is, a U-phase aluminum wire end wire 65 e , a V-phase aluminum wire end wire 67 e , and a W-phase aluminum wire end wire 69 e form a second wire bundle 90 .
- each of the U-phase copper wire end wire 64e, the V-phase copper wire end wire 66e, and the W-phase copper wire end wire 68e forming the first wire bundle 80 may be referred to as a first wire.
- each of the U-phase aluminum wire end wire 65e, the V-phase aluminum wire end wire 67e, and the W-phase aluminum wire end wire 69e forming the second wire bundle 90 may be referred to as a second wire.
- the first wire bundle 80 has a wire bundle-like first end portion 81 on the joint portion 70 side, and has a first end surface 82 a at the tip of the first end portion 81 .
- the first end surface 82a of the first wire bundle 80 is, for example, a cut surface formed by applying a vertical force to the first wire bundle 80, and is crushed vertically by the force applied when cutting the first wire, and the vicinity of the tip It has a wider surface than
- the second wire bundle 90 has a second end portion 91 spirally wound around the first end portion 81 of the first wire bundle 80, and a second end face 92a (see FIG. 8) at the tip of the second end portion 91. )have.
- a second end portion 91 of the second wire bundle 90 is wound around the first end portion 81 so as to cover the edge of the first end surface 82 a of the first wire bundle 80 . That is, as shown in FIG. 7 , the second end 91 is located at the farthest tip side of the other end 44 a of the stator winding 44 .
- the U-phase aluminum wire end wire 65e, the V-phase aluminum wire end wire 67e, and the W-phase aluminum wire end wire 69e forming the second wire bundle 90 each have a first end portion They are provided adjacent to each other so as to contact the outer peripheral surface of 81 . Then, at the second end portion 91, between the first spiral portion 91a on the tip portion 92 side and the second spiral portion 91b wound following the first spiral portion 91a, the outer circumference of the first end portion 81 A gap G is formed through which a part of the surface is exposed.
- the bonding material 75 is provided so as to cover the first end portion 81 and the second end portion 91 .
- the second end 91 is joined.
- the bonding material 75 is also provided in the gap G.
- an insulating material 71 is provided so as to wrap the junction 70 between the first end 81 and the second end 91 .
- the insulating material 71 is provided so as to cover the outer peripheral surface and the tip end surface of the other end portion 44 a of the stator winding 44 .
- the second end portion 91 of the second wire bundle 90 is spirally wound around the first end portion 81 so as to cover the edge of the first end face 82a of the first wire bundle 80 . Therefore, when the insulating material 71 is wound, the protrusions on the edge of the first end surface 82a, which is the cut surface, are prevented from breaking through the insulating material 71, and insulation failure can be suppressed.
- the insulating material 71 when the insulating material 71 is formed by winding a paper-like material such as insulating paper around the outer peripheral surface of the joint portion 70, the insulating material 71 is pressed against the outer peripheral surface of the joint portion 70. If there is a protrusion on the edge, the insulating material 71 is easily torn.
- the spiral second end portion 91 prevents the edge of the first end surface 82a from directly contacting the insulating material 71. Therefore, even in the manufacturing process of covering the joint portion 70 with the paper-like insulating material 71, the protrusion This prevents the insulating material 71 from breaking.
- the outer peripheral surface 93 of the second end portion 91 has a circular outer shape.
- a second end surface 92a that is the tip of the second end portion 91 is positioned within a circular contour formed by the outer peripheral surface 93 of the second end portion 91 .
- the second end surface 92a is a surface extending from the circular outer shape formed by the outer peripheral surface 93 toward the center C1.
- the second end portion 91 is configured so that the second end surface 92a is positioned within the circular contour formed by the outer peripheral surface 93, so that when the insulating material 71 is wound, the second end portion, which is the cut surface, is formed.
- the protrusions on the edges of the two end surfaces 92 a are prevented from breaking through the insulating material 71 . Therefore, insulation failure can be further suppressed.
- the compressor motor (motor 40 ) is the motor 40 having the stator 41 with the stator windings 44 .
- the stator winding 44 is composed of a first wire bundle 80 having a wire bundle-like first end portion 81 formed by twisting one ends of a plurality of first wires together, and a plurality of second wires, a second wire bundle 90 having a second end 91 spirally wound around the first end 81 of the first wire bundle 80 .
- the stator winding 44 also includes an insulating material 71 that wraps the first end 81 and the second end 91 .
- the first wire bundle 80 has a first end face 82 a at the tip of the first end portion 81 .
- the second end portion 91 is wound so as to cover the edge of the first end face 82a of the first wire bundle 80, and the second wire bundle 90 has the second end face 92a at the tip of the second end portion 91.
- the second end surface 92 a is located within the circular outline formed by the outer peripheral surface 93 of the second end portion 91 .
- the second end portion 91 is wound around the first end portion 81 including the first end surface 82a where projections are likely to occur so as to cover the edge portion of the first end surface 82a, and the second end portion 81 where projections are likely to occur.
- the second end surface 92 a is positioned within the circular outline formed by the outer peripheral surface 93 of the second end portion 91 . Therefore, the protrusion is prevented from breaking through the insulating material 71 at the joint portion 70 between the first end portion 81 and the second end portion 91, so that insulation failure can be suppressed.
- the compressor 12 according to Embodiment 1 includes an electric motor 40, a compression element 30 that is driven by the electric motor 40 and compresses a fluid sucked from the outside, a closed container 20 that houses the electric motor 40 and the compression element 30, It has Accordingly, it is possible to provide a highly reliable and safe compressor 12 in which insulation failure in the electric motor 40 is suppressed.
- the refrigeration cycle apparatus 10 according to Embodiment 1 also includes a compressor 12 , an outdoor heat exchanger 14 , a pressure reducing device 15 and an indoor heat exchanger 16 . As a result, it is possible to provide the refrigeration cycle apparatus 10 that suppresses malfunction of the compressor 12 and has high reliability and safety.
- FIG. 9 is a diagram showing only the second end portion 91 when the joint portion 70 of the stator winding 44 of the electric motor 40 according to Embodiment 2 is viewed from the tip side.
- the shape of the tip portion 92 of the second end portion 91 at the joint portion 70 (see FIG. 5) of the stator winding 44 is different from that in the first embodiment. It is the same as the case of form 1.
- the same reference numerals are given to the same parts as in the first embodiment, and the explanation will focus on the differences from the first embodiment.
- the tip portion 92 including the second end surface 92 a of the second end portion 91 is bent inwardly of the circular outer shape formed by the outer peripheral surface 93 of the second end portion 91 .
- the second end surface 92 a is located inside the circular outer shape formed by the outer peripheral surface 93 of the second end portion 91 . That is, in the second embodiment, when the joint portion 70 is viewed from the tip surface side of the other end portion 44a of the stator winding 44, the circular outer shape formed by the outer peripheral surface 93 of the second end portion 91 A second end face 92a of the second end portion 91 is located at a distance inward.
- the second end surface 92 a of the second wire bundle 90 is larger than the circular outer shape formed by the outer peripheral surface 93 of the second end portion 91 . are also located inside.
- the force of the insulating material 71 being pressed against the second end surface 92a, which is the cut surface is relieved by the outer peripheral surface 93 outside the second end surface 92a. . Therefore, the projections on the edge of the second end face 92a are further suppressed from breaking through the insulating material 71, so that the effect of the first embodiment of suppressing poor insulation can be further enhanced.
- FIG. 10 is a diagram of a state in which the other end portion 44a of the stator winding 44 of the electric motor 40 according to Embodiment 3 is covered with the insulating material 71, viewed from the outer peripheral surface side.
- the interval between the spiral portions of the second end portion 91 at the joint portion 70 (see FIG. 5) of the stator winding 44 is different from that in the first embodiment, and the other configurations are the same as those of the embodiment. It is the same as the case of form 1.
- the same reference numerals are given to the same parts as in the first embodiment, and the explanation will focus on the differences from the first embodiment.
- the second end portion 91 spirally wound around the first end portion 81 is configured to alternately have peaks 100 and valleys 101 that are more crushed than the peaks 100 . ing. That is, the valley portion 101 at the second end portion 91 has an outer diameter D2 that is smaller than the outer diameter D1 of the peak portion 100 . Further, at the second end portion 91, each of the terminal wires constituting the second end portion 91, that is, the U-phase aluminum wire terminal wire 65e, the V-phase aluminum wire terminal wire 67e, and the W-phase aluminum wire terminal wire 69e are They are provided adjacently without a gap G (see FIG. 7).
- the first spiral portion 91a and the second spiral portion 91b are provided close together so that the outer peripheral surface of the first end portion 81 is not exposed.
- a peak portion 100 and a valley portion 101 are provided in each of the first spiral portion 91a and the second spiral portion 91b.
- the U-phase aluminum wire end wire 65e and the W-phase aluminum wire end wire 69e arranged on both sides of the V-phase aluminum wire end wire 67e in each spiral portion of the second end portion 91 are It is more crushed than the V-phase aluminum wire end wire 67e.
- the second end portion 91 is provided with a plurality of peak portions 100 and a plurality of valley portions 101 is illustrated, one or more peak portions 100 and one or more valley portions 101 may be provided.
- a bonding material 75 is provided so as to cover all the peaks 100 and valleys 101 of the second end 91 wound around the first end 81, and the first end 81 and the second end 91 are bonded. It is also, an insulating material 71 is provided so as to wrap a joint portion 70 between the first end portion 81 and the second end portion 91 .
- the other end 44a of the stator winding 44 as described above can be manufactured, for example, by the following manufacturing method.
- the second end portion 91 is spirally wound around the first end portion 81 .
- the second end portion 91 is wound so as to cover the edge of the first end surface 82a of the first wire bundle 80, and the second end surface 92a at the tip of the second end portion 91 is It is arranged within the circular contour formed by the outer peripheral surface 93 .
- the second end portion 91 is pressurized from the outside. Specifically, a pressurizing step is performed to apply pressure to the outer peripheral surface 93 of the second end portion 91 from the outside.
- the projection on the edge of the second end surface 92a is crushed by the pressure from the outside.
- the pressure applied to the outer peripheral surface of the second end portion 91 differs depending on the direction in which the other end portion 44 a extends, and the second end portion 91 is plastically deformed by the pressurization to the second end portion 91 .
- a peak portion 100 and a valley portion 101 are formed.
- the bonding material 75 is applied so as to cover all the peaks 100 and the valleys 101 of the second end portion 91 .
- the applied bonding material 75 is more likely to permeate into the troughs 101 that are recessed than the ridges 100 on the outer peripheral surface 93 of the second end 91 .
- the first end portion 81 and the second end portion 91 can be well connected because it is particularly easy for the liquid to pass through between the terminal lines and penetrate into the first end portion 81 .
- the joining portion 70 is covered with the insulating material 71 .
- the compressor electric motor (electric motor 40 ) according to Embodiment 3 includes the joint material 75 that joins the first end portion 81 and the second end portion 91 .
- the second end portion 91 is arranged so that the peak portion 100 and the valley portion 101 having an outer diameter D2 that is smaller than the outer diameter D1 of the peak portion 100 and which is crushed more than the peak portion 100 are arranged in the direction in which the first end portion 81 extends. alternately.
- the bonding material 75 covers the peaks 100 and the valleys 101 of the second end 91 .
- the first electric wire having the wire bundle-like first end portion 81 configured by twisting one end portions of a plurality of first electric wires collectively is provided.
- the first wire bundle 80 has a first end face 82 a at the tip of the first end portion 81 .
- the second end portion 91 is wound so as to cover the edge of the first end surface 82a of the first wire bundle 80, and the second end surface 92a at the tip of the second end portion 91 is wound.
- the projection on the edge of the second end face 92a is crushed by the pressurizing step of applying pressure to the outer peripheral face 93 of the second end 91 from the outside. Therefore, the insulating material 71 is less likely to break at the edge of the second end surface 92a, which is the cut surface, and insulation failure can be further suppressed.
- the method for manufacturing the electric motor 40 in the pressurizing step, different pressures are applied to the outer peripheral surface 93 of the second end portion 91 in the direction in which the second end portion 91 extends. A peak portion 100 and a valley portion 101 are formed in the portion 91 . Further, the method for manufacturing the electric motor 40 is a step that is performed after the pressurizing step, in which the bonding material 75 is applied so as to cover the peak portions 100 and the valley portions 101 of the second end portion 91 , thereby forming the first end portion 81 . and the second end portion 91 are joined together.
- the spiral portions of the second end portion 91 are configured to be adjacent to each other, and the circular outer shape formed by the outer peripheral surface 93 of the second end portion 91 is It can be configured such that the tip portion 92 of the second end portion 91 is positioned inside.
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Abstract
Description
図1は、実施の形態1に係る冷凍サイクル装置10における冷房運転時の冷媒回路11を示す回路図である。図2は、実施の形態1に係る冷凍サイクル装置10における暖房運転時の冷媒回路11を示す回路図である。図1中、実線矢印は冷房運転時に冷媒が流れる方向を示し、図2中、破線矢印は暖房運転時に冷媒が流れる方向を示している。
図9は、実施の形態2に係る電動機40の固定子巻線44の接合部70を先端側から見た場合における第2端部91のみを示す図である。実施の形態2では、固定子巻線44の接合部70(図5参照)における第2端部91の先端部92の形状が、実施の形態1の場合とは異なり、その他の構成は実施の形態1の場合と同様である。実施の形態2では、実施の形態1と同一部分には同一符号を付し、実施の形態1との相違点を中心に説明するものとする。
図10は、実施の形態3に係る電動機40の固定子巻線44の他端部44aが絶縁材71で被覆された状態を外周面側から見た図である。実施の形態3では、固定子巻線44の接合部70(図5参照)における第2端部91の螺旋部同士の間隔が、実施の形態1の場合とは異なり、その他の構成は実施の形態1の場合と同様である。実施の形態3では、実施の形態1と同一部分には同一符号を付し、実施の形態1との相違点を中心に説明するものとする。
Claims (7)
- 固定子巻線を有する固定子を備えた圧縮機用電動機であって、
前記固定子巻線は、
複数の第1電線の一端部が纏めて捻られて構成された線束状の第1端部を有し、前記第1端部の先端に第1端面を有する第1電線束と、
複数の第2電線で構成され、前記第1電線束の前記第1端部に螺旋状に巻かれた第2端部を有する第2電線束と、
前記第1端部と前記第2端部とを包む絶縁材と、を備え、
前記第2端部は、前記第1電線束の前記第1端面の縁部を覆うように巻かれており、
前記第2電線束は、前記第2端部の先端に第2端面を有し、
前記第2電線束の前記第2端面は、前記第2端部の外周面が形成する円状の外形以内に位置している
圧縮機用電動機。 - 前記第2電線束の前記第2端面は、前記第2端部の前記外周面が形成する前記円状の外形よりも内側に位置している
請求項1に記載の圧縮機用電動機。 - 前記第1端部と前記第2端部とを接合する接合材を備え、
前記第2端部は、山部と、前記山部よりも潰れ、前記山部の外径よりも小さい外径を有する谷部とを、前記第1端部が延びる方向に交互に有し、
前記接合材は、前記第2端部における前記山部及び前記谷部を覆っている
請求項1又は2に記載の圧縮機用電動機。 - 請求項1~3のいずれか一項に記載の圧縮機用電動機と、
前記圧縮機用電動機により駆動し、外部から吸入した流体を圧縮する圧縮要素と、
前記圧縮機用電動機及び前記圧縮要素を収容する密閉容器と、
を備えた圧縮機。 - 請求項4に記載の圧縮機と、
室外熱交換器、膨張弁及び室内熱交換器と、
を備えた冷凍サイクル装置。 - 複数の第1電線の一端部が纏めて捻られて構成された線束状の第1端部を有し、前記第1端部の先端に第1端面を有する第1電線束と、
複数の第2電線で構成され、前記第1電線束の前記第1端部に螺旋状に巻かれた第2端部を有する第2電線束と、
前記第1端部と前記第2端部とを包む絶縁材と、を備えた固定子巻線を有する固定子を備えた圧縮機用電動機の製造方法であって、
前記第2端部が、前記第1電線束の前記第1端面の縁部を覆うように巻かれ、且つ、前記第2端部の先端の第2端面が、前記第2端部の外周面が形成する円状の外形以内に位置する状態で、前記第2端部の外周面に外部から圧力をかける加圧工程を有する
圧縮機用電動機の製造方法。 - 前記加圧工程では、前記第2端部が延びる方向に異ならせた前記圧力を前記第2端部の前記外周面にかけることで前記第2端部に山部と谷部とを形成し、
前記加圧工程の後に実施され、前記第2端部における前記山部と前記谷部を覆うように接合材を塗布して前記第1端部と前記第2端部とを接合する接合工程を有する
請求項6に記載の圧縮機用電動機の製造方法。
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JP2023528845A JP7511759B2 (ja) | 2021-06-16 | 2021-06-16 | 圧縮機用電動機、圧縮機、冷凍サイクル装置及び圧縮機用電動機の製造方法 |
CN202180098983.5A CN117441284A (zh) | 2021-06-16 | 2021-06-16 | 压缩机用电动机、压缩机、制冷循环装置以及压缩机用电动机的制造方法 |
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JPH0522886A (ja) * | 1990-08-15 | 1993-01-29 | Hitachi Ltd | 電動機及びそのステータ巻線と口出線との接続方法 |
JP2002044892A (ja) * | 2000-07-27 | 2002-02-08 | Matsushita Electric Ind Co Ltd | 電動機およびそれを搭載した電動圧縮機 |
JP2014007173A (ja) * | 2013-10-16 | 2014-01-16 | Kobe Steel Ltd | 端子棒 |
WO2015155934A1 (ja) * | 2014-04-07 | 2015-10-15 | パナソニックIpマネジメント株式会社 | 三相電動機 |
JP2015216728A (ja) * | 2014-05-08 | 2015-12-03 | 三菱電機株式会社 | 圧縮機用電動機及び圧縮機及び冷凍サイクル装置及び圧縮機用電動機の製造方法 |
JP2017076497A (ja) * | 2015-10-14 | 2017-04-20 | 株式会社オートネットワーク技術研究所 | 複数の電線の集合体及びその製造方法 |
WO2017130288A1 (ja) * | 2016-01-26 | 2017-08-03 | 三菱電機株式会社 | 電動機、圧縮機、冷凍サイクル装置及び電動機の製造方法 |
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2021
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- 2021-06-16 CN CN202180098983.5A patent/CN117441284A/zh active Pending
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JPH0522886A (ja) * | 1990-08-15 | 1993-01-29 | Hitachi Ltd | 電動機及びそのステータ巻線と口出線との接続方法 |
JP2002044892A (ja) * | 2000-07-27 | 2002-02-08 | Matsushita Electric Ind Co Ltd | 電動機およびそれを搭載した電動圧縮機 |
JP2014007173A (ja) * | 2013-10-16 | 2014-01-16 | Kobe Steel Ltd | 端子棒 |
WO2015155934A1 (ja) * | 2014-04-07 | 2015-10-15 | パナソニックIpマネジメント株式会社 | 三相電動機 |
JP2015216728A (ja) * | 2014-05-08 | 2015-12-03 | 三菱電機株式会社 | 圧縮機用電動機及び圧縮機及び冷凍サイクル装置及び圧縮機用電動機の製造方法 |
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WO2017130288A1 (ja) * | 2016-01-26 | 2017-08-03 | 三菱電機株式会社 | 電動機、圧縮機、冷凍サイクル装置及び電動機の製造方法 |
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CZ2023466A3 (cs) | 2024-01-31 |
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