Patent application number | Description | Published |
20080246364 | Phase insulator - A phase insulator for a stator of a motor insulates between stator coils. The stator has plural stator coils inserted in slots in a stator core. The phase insulator insulates stator coils from each other. The phase insulator includes insulating sheet portions and bridge portions. The insulating sheet portions are disposed at both end portions of the stator core for insulating between the coil ends of the stator coils. The insulating sheet portions are made of a first material. The bridge portions connect the insulating sheet portions. The bridge portions are inserted in the slots of the stator core. The bridge portions are made of a second material. The second material has higher elastic characteristics than the first material. | 10-09-2008 |
20090079291 | INTERPHASE INSULATING SHEET OF ROTATING ELECTRIC MACHINE, METHOD FOR MANUFACTURING INTERPHASE INSULATING SHEET, AND ELECTRIC COMPRESSOR - An interphase insulating sheet of a rotating electric machine is disclosed. The interphase insulating sheet includes a first insulating portion arranged between first coil ends of two different phases, a second insulating portion arranged between second coil ends of two different phases, and bridge pieces inserted in slots. The first insulating portion and the second insulating portion each includes an outer surface facing radially outward of the stator core and an inner surface facing radially inward of the stator core. The bridge pieces each include a first end portion that is heat welded to the first insulating portion and a second end portion that is heat welded to the second insulating portion. When the first end portion is heat welded to the inner surface of the first insulating portion, the region including the edge of the first end portion is heat welded to the first insulating portion. When the second end portion is heat welded to the outer surface of the second insulating portion, at least the region including an opposing end of the second insulating portion facing the first insulating portion is heat welded to the second end portion. | 03-26-2009 |
20090079292 | INTERPHASE INSULATING SHEET OF ROTATING ELECTRIC MACHINE, METHOD FOR MANUFACTURING INTERPHASE INSULATING SHEET, AND ELECTRIC COMPRESSOR - An interphase insulating sheet of rotating electric machine is disclosed The interphase insulating sheet includes a first insulating portion, a second insulating portion, and at least one bridge piece. The first insulating portion includes at least one first coupling aid integrally provided with the first insulating portion to extend from an opposing end of the first insulating portion facing the second insulating portion. The second insulating portion includes at least one second coupling aid integrally provided with the second insulating portion to extend from an opposing end of the second insulating portion facing the first insulating portion. A first end portion of the bridge piece is heated welded to the first coupling aid. A second end portion of the bridge piece is heated welded to the second coupling aid. The first coupling aid has a first positioning hole. The second coupling aid has a second positioning hole. The first end portion of the bride piece includes a third positioning hole, which overlaps the first positioning hole. The second end portion of the bride piece includes a fourth positioning hole, which overlaps the second positioning hole. | 03-26-2009 |
20090108696 | INTERPHASE INSULATING SHEET OF ROTATING ELECTRIC MACHINE, AND ELECTRIC COMPRESSOR - An interphase insulating sheet of a rotating electric machine is disclosed. The interphase insulating sheet includes a first insulating portion arranged between first coil ends of two different phases, a second insulating portion arranged between second coil ends of two different phases, and bridge pieces inserted in slots. The first insulating portion includes a first coupling aid. The second insulating portion includes a second coupling aid. The first coupling aid and the second coupling aid each includes an outer surface facing radially outward of the stator core and an inner surface facing radially inward of the stator core. The first end portion of the bridge piece is located on the outer surface of the first coupling aid, and the second end portion of the bridge piece is located on the inner surface of the second coupling aid. | 04-30-2009 |
20090108697 | METHOD OF FIXING A STATOR CORE AND AN ELECTRIC COMPRESSOR - A method of fixing a stator core in a cylindrical housing includes the following steps. The first step is a step of blanking a plurality of stator core sheets from an electromagnetic steel sheet by using a die. The die has a circular outside contour for blanking the stator core sheets from the electromagnetic steel sheet and each of the blanked stator core sheets has an outside contour. The second step is a step of forming the stator core by laminating the blanked stator core sheets one on another. The third step is a step of setting a non-fixing position of the stator core to the housing in such an angular position where difference in diametral dimension of the outside contour between the die and the stator core is relatively large. | 04-30-2009 |
20090155101 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor has a compression mechanism, a rotary shaft, an electric motor, a motor drive circuit, a connecting terminal and a housing assembly. The compression mechanism, the electric motor, and the motor drive circuit are disposed along the axial direction of the rotary shaft in the housing assembly having first through third housings. The first housing is used for mounting the electric motor and the compression mechanism. The second housing has a terminal mounting portion for fixing the connecting terminal. The first and second housings have fastening portions at the radially peripheral portion thereof. The third housing is joined to the second housing to form an accommodation space for accommodating the motor drive circuit. The closed casing is formed by fastening the fastening portions of the first and second housings by means of a first bolt and connecting the second housing to the open end of the first housing. | 06-18-2009 |
20090162221 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor includes a housing having an inlet port, a compression mechanism for compression of refrigerant introduced from an external refrigerant circuit via the inlet port into the housing, an inverter having a heat-generating component, an electric motor driven by the inverter, and a rotary shaft rotated by the electric motor thereby to drive the compression mechanism. The electric motor, the compression mechanism and the inverter are aligned in the housing in axial direction of the rotary shaft. An inlet pipe is connected to the inlet port. The housing has an outer peripheral surface in contact with the inlet pipe. The heat-generating component of the inverter is disposed adjacent to or in contact with the inlet pipe so as to be thermally coupled to the inlet pipe. | 06-25-2009 |
20090162222 | MOTOR-DRIVEN COMPRESSOR - A compressor includes a housing having an inlet port, a compression mechanism for compression of refrigerant introduced via the inlet port into the housing, a motor having a stator core and a coil, an inverter for driving the motor, and a rotary shaft rotated by the motor thereby to drive the compression mechanism. The compression mechanism, the motor and the inverter are aligned in the order in the housing in axial direction of the rotary shaft. The coil has a coil end projecting toward the inverter from the stator core and being disposed adjacent to an inner peripheral surface of the housing. The inlet port is located so as to face the coil end. A recess is formed on the inner peripheral surface of the housing for communicating with the inlet port. The recess extends in the axial direction of the rotary shaft toward the inverter beyond the coil end. | 06-25-2009 |
20090269222 | MOTOR-DRIVEN COMPRESSOR - An electric motor includes a cylindrical stator that is formed with a plurality of slots. The cylindrical stator has polyphase coils that are formed by winding a plurality of conductive wires in the slots to have polyphase, a wire bundle and an insulating tube covering the wire bundle. Each conductive wire includes a core wire and an insulator that covering the core wire. The wire bundle has a drawing portion, a connecting portion and an elongated portion that is elongated between the drawing portion and the connecting portion for increasing creepage distance between the connecting portion and the housing thereby to increase insulation resistance. The connecting portion of the wire bundle provides a neutral point of the electric motor. The elongated portion and the connecting portion of the wire bundle are covered with the insulating tube. | 10-29-2009 |
20110062814 | PERMANENT MAGNET EMBEDDED ROTATING ELECTRICAL MACHINE - The permanent magnet embedded rotating electrical machine includes a rotor and a plurality of flat permanent magnets. The rotor has on an outer periphery thereof a plurality of pairs of concave portions and a plurality of convex portions. Each of the convex portions is located between the pair of concave portions. The concave portions are formed at radially outward of respective adjacent magnetic pole ends of the permanent magnet. A bridge is provided in the rotor at an angular position about an axis of the rotor between opposed magnetic pole ends of two adjacent permanent magnets. Each concave portion at radially outward of the magnetic pole end of the permanent magnet is located close to the center of the same permanent magnet in relation to the bridge next to the permanent magnet in the circumferential direction of the rotor. | 03-17-2011 |
20110113809 | HEATING AND COOLING SYSTEM - A heating and cooling system, which includes a refrigerant circulation circuit, first and second targets, first and second refrigerant circuits, a first switching section, and a control device, is disclosed. The first switching section is selectively switched between a first position at which a refrigerant discharged from a discharge area of a compressor is permitted to flow to the first target and a second position at which the refrigerant is not permitted to flow to the first target. The control device switches the first switching section to the first position so that the refrigerant circulation circuit functions as a first refrigerant circuit, thereby heating the first target and cooling the second target. The control device switches the first switching section to the second position so that the refrigerant circulation circuit functions as a second refrigerant circuit, thereby cooling only the second target. | 05-19-2011 |
20120228023 | ELECTRIC COMPRESSOR - An electric compressor includes a compression mechanism, an electric motor that drives the compression mechanism, a compressor housing that accommodates the electric motor and the compression mechanism, an inverter housing coupled to the compressor housing and including an inverter accommodation chamber that accommodates the inverter, and a sealed terminal arranged in the compressor housing. The sealed terminal electrically connects the inverter and the electric motor. The sealed terminal includes a terminal pin, which is formed from a conductive material, a terminal holder, which holds the terminal pin, and an insulative body, which insulates the terminal pin from the terminal holder. The insulative body includes a first insulative body, which is arranged in the inverter accommodation chamber and formed from a ceramic, and a second insulation body, which is arranged in the compressor housing and formed from glass. | 09-13-2012 |
20120230849 | MOTOR-DRIVEN COMPRESSOR AND MOUNTING METHOD FOR MOTOR-DRIVEN COMPRESSOR - A stator core includes an insertion hole that has an opening in an outer peripheral surface of the stator core and a bent portion in the stator core. A cluster block includes an insertion piece, which is inserted into the insertion hole via the cornered portion. The cluster block is attached to the stator core by engaging the insertion piece with the insertion hole. | 09-13-2012 |
20120230851 | ELECTRIC COMPRESSOR - An electric compressor including a compression mechanism, an electric motor, an inverter, a compressor housing, a sealed terminal, a cluster block, and a metal brace. The sealed terminal is arranged in the compressor housing and electrically connects the inverter and the electric motor. Further, the sealed terminal includes a terminal pin, which is formed from a conductive material, a terminal holder, and an insulative body. The cluster block includes an insertion hole into which the terminal pin is inserted. The metal brace electrically connects the terminal pin to the lead wire. The cluster block includes a protrusion projecting around the insertion hole and surrounding part of the insulative body. The insertion hole has an inside diameter larger than an outside diameter of the terminal pin. | 09-13-2012 |
20120237372 | MOTOR-DRIVEN COMPRESSOR AND WIRING METHOD FOR MOTOR-DRIVEN COMPRESSOR - A cluster block is arranged on an outer peripheral surface of a stator core. A lead wire is continuous with a U-phase coil, which extends from a coil end of the stator core, and is then connected to a U-phase connector. A lead wire is continuous with a V-phase coil, which extends from the coil end, and is then connected to a V-phase connector. A lead wire is continuous with a W-phase coil, which extends from the coil end, and is then connected to a W-phase connector. The lead wires are twisted and entwined with one another. | 09-20-2012 |
20120251355 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor has a housing and a partition. A compressing portion and an electric motor as the drive source of the compressing portion are accommodated in a first area. A drive circuit for the motor is arranged in a second area so as to have dissipation of the drive circuit. The compressor further includes a conductive member electrically connected to the circuit and fixed to the partition, and an electrical connection portion electrically connecting the conductive member to the motor. The connection portion is partly received in a passing area formed between the housing and the motor. The housing has a suction port and a discharge port. The discharge port is located at a position farther from the partition than the suction port and the passing area. An insertion member in the passing area restricts flow of refrigerant in the housing toward the discharge port via the passing area. | 10-04-2012 |
20120314375 | HEAT RELEASE DEVICE - A heat release device is for use with a multilayer board that has an inner layer serving as a power layer. The heat release device includes a heat release member thermally and electrically connected to the power layer, and a heat release board having a heat release layer and a shield layer electrically insulated from each other. The heat release layer is thermally and electrically connected to the heat release member. The shield layer serves to shield against electromagnetic noise radiated from the heat release layer. The shield layer is electrically insulated from the heat release member connected to the heat release layer. The heat release device also includes an electrically conductive member electrically connected to the shield layer and grounded, and an insulator through which the heat release layer is thermally connected to the electrically conductive member. | 12-13-2012 |
20130004345 | MOTOR-DRIVEN COMPRESSOR - A securing means for an insulating member that is advantageous in improving the efficiency of assembly of a motor-driven compressor is provided. Phase wires extending from an end face of a stator core, which is closer to a compression mechanism, are bound to form a phase wire bundle. The distal ends of the phase wires are electrically connected together, so that a wire connecting portion is formed at the distal end of the phase wire bundle. The wire connecting portion, which serves as a neutral point, is coated with an insulating tube made of insulating plastic. The distal end of the insulating tube is sealed. A receiving hole is formed in the cluster block. The insulating tube is fitted in the receiving hole and secured to the cluster block by contacting an inner surface of the receiving hole. | 01-03-2013 |
20130064697 | ELECTRIC COMPRESSOR - An electric compressor includes a housing, an electric motor, a compression mechanism, and a resin molding. The electric motor includes a coil having coil ends projecting from each of two end surfaces of the stator. Refrigerant flows through the housing that accommodates the electric motor. The resin molding covers each coil end and includes an opening that exposes part of the coil end to the interior of the housing. | 03-14-2013 |
20130078123 | ELECTRIC MOTOR FOR A MOTOR-DRIVEN COMPRESSOR AND SAID MOTOR-DRIVEN COMPRESSOR - An electric motor for a motor-driven compressor is provided. The electric motor includes a stator and a rotor. The stator is fixed to a housing. The rotor is arranged outward of the stator. The rotor is mounted on a rotary shaft to rotate integrally with the rotary shaft. The stator includes slots and a stator coil wound about the slots. The rotor includes a rotary support and a magnet. The rotary support is fixed to the rotary shaft to rotate integrally with the rotary shaft. The magnet is supported by the rotary support. The arrangement of the magnetic poles of the magnet in the circumferential direction is a Halbach array. | 03-28-2013 |
20130134720 | WASTE HEAT UTILIZATION APPARATUS - A Rankine cycle circuit is constituted by an expander, which forms a fluid machine, a condenser, a gear pump, which forms a fluid machine, and a boiler. A discharge passage is connected to a discharge chamber of a pump chamber. A branch passage is connected to the discharge passage, and a restriction passage is provided at the end of the branch passage. The restriction passage is open to an internal space K in a generator housing. An outflow passage extends through a partition wall of a center housing member and a side plate. The internal space K in which an alternator is located communicates with an outlet chamber through the outflow passage. | 05-30-2013 |
20130320792 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor is provided that includes a housing made of a metal material, a compression portion, an electric motor, a cover made of a metal material, a motor drive circuit accommodated in an accommodation space defined by the housing and the cover, an elastic sealing member located between the housing and the cover, and an extended portion provided in at least one of the housing and the cover. The compression portion and the electric motor are accommodated in the housing. The cover is attached to the housing. The motor driver circuit drives the electric motor. The extended portion extends in a direction toward an opposing one of the housing and the cover and is arranged inside the sealing member. The extended portion includes an outer peripheral surface. The sealing member is arranged to be in close contact with the outer peripheral surface of the extended portion. | 12-05-2013 |
20130323097 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor includes a housing made of a metal material, a compression portion, an electric motor, and a cover. The compression portion and the electric motor are accommodated in the housing, and the cover is attached to the housing. The cover is formed by a plastic portion and a shield made of a metal material that intercepts electromagnetic noise. A motor drive circuit for driving the electric motor is accommodated in an accommodation space defined by the housing and the cover. An elastic sealing member is located between the housing and the cover. The shield includes an extended portion that extends toward the housing and is arranged inside the sealing member. The extended portion is in contact with the housing. | 12-05-2013 |
20140003974 | MOTOR-DRIVEN COMPRESSOR | 01-02-2014 |
20140044573 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor includes an electric motor including a stator and a rotor, wherein the stator includes a stator core and a coil end projecting from the stator core, a rotation shaft, a compression unit, a motor driving circuit, a housing accommodating the compression unit, the electric motor, and the motor driving circuit sequentially arranged in an axial direction of the rotation shaft, a conductor configured to electrically connect the motor driving circuit to the electric motor, a lead extending from the coil end, a connection terminal electrically connecting the conductor to the lead, and a cluster block accommodating the connection terminal. The cluster block is arranged in the housing. The cluster block is coupled to the stator with at least part of the cluster block located inward from the coil end in a radial direction of the rotation shaft. | 02-13-2014 |
20140063673 | PROTECTIVE DEVICE FOR LC FILTER - A protective device protects an LC filter in a vehicle. The vehicle includes a first vehicle-mounted electric device and a second vehicle-mounted electric device. The first vehicle-mounted electric device includes a first power converter. The second vehicle-mounted electric device includes a second power converter and shares a power supply with the first vehicle-mounted electric device. The LC filter is arranged between the first power converter and the power supply. The LC filter is configured such that the resonance frequency band of the LC filter can be changed. The resonance frequency band of the LC filter is changed based on a ripple amount in a current flowing in the LC filter. | 03-06-2014 |
20140127055 | INTERPHASE INSULATING SHEET FOR ROTATING ELECTRIC MACHINE, AND MOTOR-DRIVEN COMPRESSOR - An interphase insulating sheet for a rotating electric machine includes a pair of insulating portions and a plurality of bridge pieces. The insulating portions perform interphase insulation between coil ends of coils protruding from both ends of a stator core. Each insulating portion has bridge bases. The bridge pieces are each inserted in one of slots. Each bridge piece extends from a bridge base of one of the insulating portions to a bridge base of the other insulating portion. Each insulating portion has an annular shape having stacked parts that include a bridge base and overlap with each other by a predetermined margin. In the circumferential direction of each insulating portion, the dimension of the stacked parts is set to be less than or equal to the dimension of the bridge pieces. | 05-08-2014 |
20140134014 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor includes a compression unit, an electric motor, a motor drive circuit, a housing, and a first end plate. The electric motor includes a rotation shaft, a rotor provided with a rotor core, and a stator. The stator includes a state core and a coil. The coil includes first and second coil ends. The rotor core includes a refrigerant passage having a first opening that opens in the compression unit side. The first opening includes a first radially outer region. First and second regions in the housing are in communication through the refrigerant passage. The first end plate includes a first communication port arranged on a first region side end of the rotor core. The first region and the refrigerant passage are in communication through the first opening and first communication port. The first radially outer region is covered by the first end plate. | 05-15-2014 |