Abstract: [Problem] To reduce imbalance among all movable components of a scroll compressor including a drive shaft and components fixed or connected to the drive shaft. In a scroll compressor 10, a shaft balancer 31 integrated with a drive shaft 30 includes a first weight 33 disposed on the opposite side from an eccentric pin 71 with respect to a center line CL0 of the drive shaft 30, and a bushing balancer 721 integrated with an eccentric bush 72 includes a second weight 723 disposed on the radially outer side of the eccentric bush 72 and on the opposite side from a center line CL1 of the eccentric pin 71 with respect to a center line CL2 of the eccentric bush 72. In a view from the axial direction of the drive shaft 30, the second weight 723 is symmetric with respect to a virtual line passing through the center of the drive shaft 30 and the center of the eccentric bush 72, and the first weight 33 is asymmetric with respect to the virtual line.

Abstract: A vehicle air conditioning apparatus includes: a refrigerant circuit including: a compressor; an outdoor heat exchanger; a heat releasing device; a first electronic expansion valve; a refrigerant-heat medium heat exchanger; and a second electronic expansion valve; a heat medium circuit; and a controller. The controller has heating modes including: an outdoor air heat absorption heating mode to absorb heat from the outdoor heat exchanger; and a waste heat recovery heating mode to absorb heat from the refrigerant-heat medium heat exchanger. When the outdoor air heat absorption heating mode is switched to the waste heat recovery heating mode, the controller controls the first electronic expansion valve to be closed, and controls a degree of superheat of the refrigerant to be increased on a downstream side of the refrigerant-heat medium heat exchanger.

Abstract: An air conditioning apparatus includes a refrigerant circuit including a plurality of heat exchangers (a condenser and an evaporator), and an axial fan configured to send air to the heat exchangers. The refrigerant circuit and the axial fan are accommodated in a case. The heat exchangers are disposed in a direction orthogonal to an air flow direction, and the axial fan is disposed on one side of an arrangement direction of the heat exchangers, and supplies the air to the heat exchangers.

Abstract: A spiral orbiting wrap of an orbiting scroll is meshed with a spiral fixed wrap of a fixed scroll. A first compression chamber is formed by an inner wall surface of the orbiting wrap and an outer wall surface of a fixed wrap. A second compression chamber is formed by an inner wall surface of the fixed wrap and an outer wall surface of the orbiting wrap. The orbiting base plate of the orbiting scroll includes a first through hole capable of communicating the first compression chamber with the back pressure chamber and a second through hole capable of communicating the second compression chamber with the back pressure chamber. The first compression chamber communicates with the back pressure chamber via the first through hole prior to the communication of the second compression chamber with the back pressure chamber via the second through hole.

Abstract: There are included a first heat exchanger (42) for causing heat to be exchanged between refrigerant and air in an interior of a vehicle (1), a heating circuit (36) for causing the refrigerant with a temperature higher than that of the air in the interior of the vehicle to circulate through the first heat exchanger, a secondary battery (21) where charging and discharging of power are performed, a cooling water circuit (50) for causing cooling water that exchanges heat with the secondary battery to circulate, a second heat exchanger (61) for causing heat to be exchanged between the refrigerant and the cooling water, the second heat exchanger being provided in a manner including a portion of the heating circuit downstream of the first heat exchanger and a portion of the cooling water circuit, and a case (23) for covering the secondary battery, the cooling water circuit, and the second heat exchanger.

Abstract: A cooling and battery cooling mode is performed to release the heat from the refrigerant in a heat releasing unit and an outdoor heat exchanger and to absorb the heat into the refrigerant in a heat absorbing unit and a refrigerant-heat medium heat exchanger, and a heating and battery cooling mode is performed to release the heat from the refrigerant in the heat releasing unit and to absorb the heat into the refrigerant in the outdoor heat exchanger and the in-vehicle device heat exchanger. In a case where the cooling and battery cooling mode is performed, when a temperature of the heat absorbing unit is lower than a target value of the temperature of the heat absorbing unit even though the flowing of the refrigerant into the heat absorbing unit is blocked, the operation mode is moved to the heating and battery cooling mode.

Abstract: There is provided a motor control device which enables torque ripple suppressing control high in followability by executing direct voltage control. A motor control device includes a voltage command calculation unit 15 which calculates a d-axis voltage command value Vdref and a q-axis voltage command value Vqref from a d-axis current command value id* and a q-axis current command value iq* of a motor 6, a feed forward command value calculation unit 23 which calculates a qi-axis voltage feed forward command value Vqff* for generating a q-axis current ripple on the basis of spatial harmonic parameters and the frequency characteristics of a motor winding, and a subtraction unit 10 which subtracts the q-axis voltage feed forward command value Vqff* calculated by the feed forward command value calculation unit 23 from the q-axis voltage command value Vqref calculated by the voltage command calculation unit 15.

Abstract: A scroll compressor is provided which is capable of performing an adjustment to appropriate back pressure in both a low-speed operation condition and an operation condition low in suction pressure by improving the position or dimension of a back pressure hole. The scroll compressor includes a back pressure chamber 29 formed on the back surface of a mirror plate 31 of a movable scroll 22, and back pressure holes 51 and 52 formed in the mirror plate of the movable scroll and providing communication between the back pressure chamber and the compression chamber 34. After the back pressure hole 52 is opened inside a lap 32 of the movable scroll in a first crank angle range, the back pressure hole 52 is temporarily closed by a lap 24 of a fixed scroll 21 and then opened inside the lap of the fixed scroll in a second crank angle range.

Abstract: [Problem] A scroll compressor is provided which has improved workability when a back pressure chamber and a compression chamber are communicated with each other. [Solution] A scroll compressor 1 includes a back pressure chamber 39 formed in a back surface of a mirror plate 31 of a movable scroll 22 in the scroll compressor 1, and a communication hole 51 which is formed in the mirror plate 31 of the movable scroll 22 and communicates the back pressure chamber 39 and a compression chamber 34 with each other. The communication hole 51 is constituted of a large-diameter hole section 52 located on the back pressure chamber 33 side of the mirror plate 31 of the movable scroll 22, and a small-diameter hole section 53 which continues from the large-diameter hole section 52 to reach the compression chamber 34.

Abstract: The invention provides an inverter device which effectively cancels the generation of common mode noise associated with dead-time effects and misjudgement of the polarity of a phase current at switching in the case where a fluctuation in a neutral point potential of a motor is suppressed by canceling a change in a phase voltage with another change in the phase voltage. A phase voltage command operation unit 33 of a control device includes a phase current prediction part 41 which predicts a phase current at a switching timing of each phase, and a correction control part 42 which corrects a switching operation so as to cancel a change in the phase voltage applied to the motor with another change in the phase voltage, based on the phase current of each phase at the switching timing predicted by the phase current prediction part 41.

Abstract: To reduce surface pressure acting on a tip of a winding terminal portion of a spiral wall of an orbiting scroll in a scroll compressor. In a scroll compressor 10, a thrust plate 81 and a thrust sheet 82 capable of being elastically deformed are provided between an opposing surface 237 serving as a thrust receiving part and an orbiting base plate 521 of an orbiting scroll 52. A first sealing member 83 seals between the orbiting base plate 521 and the thrust sheet 82 and a second sealing member 84 having a diameter greater than that of the first sealing member 83 seals the opposing surface 237 of a second partition wall 232 and the thrust plate 81. A back pressure chamber H5 is partitioned from a suction pressure area (space H6) by the thrust plate 81, thrust sheet 82, the first sealing member 83, and the second sealing member 84. A circular concave portion 816 is formed on a surface of the thrust plate 81 on the thrust sheet 82 side.

Abstract: To provide a high-voltage apparatus control device capable of judging the connection state of a connector and discharging residual charge in a short time. A control device 1 controls an electric compressor and is provided with an interlock loop 4 annexed to a connector 9 for connecting the electric compressor to an HV battery 17. The control device 1 detects connection/disconnection of the connector 9 on the basis of the state of the interlock loop 4 and forcibly discharges residual charge in an internal smoothing capacitor 14 when disconnection of the connector 9 is detected.

Abstract: Reduction of a rotational moment that occurs in an orbiting scroll is suppressed. A scroll compressor 10 includes: a fixed scroll 51; an orbiting scroll 52; an anti-rotation mechanism 300; and a back pressure chamber H5. A spiral orbiting wrap 522 of the orbiting scroll 52 is meshed with a spiral fixed wrap 512 of the fixed scroll 51. A first compression chamber C1 is formed by an inner wall surface 522a of the orbiting wrap 522 and an outer wall surface 512b of the fixed wrap 512. A second compression chamber C2 is formed by an inner wall surface 512a of the fixed wrap 512 and an outer wall surface 522b of the orbiting wrap 522. The orbiting base plate 521 of the orbiting scroll 52 includes a first through hole 701 capable of communicating the first compression chamber C1 with the back pressure chamber H5 and a second through hole 702 capable of communicating the second compression chamber C2 with the back pressure chamber H5.

Abstract: [Problem] To reduce imbalance among all movable components of a scroll compressor including a drive shaft and components fixed or connected to the drive shaft. In a scroll compressor 10, a shaft balancer 31 integrated with a drive shaft 30 includes a first weight 33 disposed on the opposite side from an eccentric pin 71 with respect to a center line CL0 of the drive shaft 30, and a bushing balancer 721 integrated with an eccentric bush 72 includes a second weight 723 disposed on the radially outer side of the eccentric bush 72 and on the opposite side from a center line CL1 of the eccentric pin 71 with respect to a center line CL2 of the eccentric bush 72. In a view from the axial direction of the drive shaft 30, the second weight 723 is symmetric with respect to a virtual line passing through the center of the drive shaft 30 and the center of the eccentric bush 72, and the first weight 33 is asymmetric with respect to the virtual line.

Abstract: A vehicle air conditioning apparatus including: a refrigerant circuit includes: a compressor to compress refrigerant; a heat absorbing device to absorb heat from air to be supplied to a vehicle compartment; and a temperature-adjusted subject heat exchanger; a device temperature adjustment circuit connected to the refrigerant circuit via the temperature-adjusted subject heat exchanger, and configured to adjust a temperature of a temperature-adjusted subject mounted in a vehicle by the temperature-adjusted subject heat exchanger; and a controller configured to control the refrigerant circuit and the device temperature adjustment circuit.

Abstract: To suppress reduced rotational moments that occur at a movable scroll. A scroll compressor (1) includes a fixed scroll (2), a movable scroll (3), and an anti-rotation mechanism (30). A spiral movable wrap (3b) of the movable scroll (3) meshes with a spiral fixed wrap (2b) of the fixed scroll (2). A first compression chamber (C1) is formed by an inner wall surface (3b1) of the movable wrap (3b) and an outer wall surface (2b2) of the fixed wrap (2b). A second compression chamber (C2) is formed by an inner wall surface (2b1) of the fixed wrap (2b) and an outer wall surface (3b2) of the movable wrap (3b). After a winding terminal end (3f) of the movable wrap (3b) contacts the outer wall surface (2b2) of the fixed wrap (2b) and the first compression chamber (C1) is thereby closed, a winding terminal end (2f) of the fixed wrap (2b) contacts the outer wall surface (3b2) of the movable wrap (3b) and the second compression chamber (C2) is thereby closed.

Abstract: Lubricant is satisfactorily supplied to a bearing that supports an eccentric bush. A scroll compressor (100) includes a fixed scroll (122) fixed to a housing (140), an orbiting scroll (124) that orbits with respect to the fixed scroll, and a conversion mechanism (300) that mutually converts a rotary motion of a drive shaft (166) and an orbiting motion of the orbiting scroll. The converting mechanism includes an eccentric shaft (260) that is provided on an end surface of the drive shaft and is eccentric with respect to the drive shaft, an eccentric bush (270) having a through hole (271) into which the eccentric shaft is fitted, and a bearing (280) that is press-fitted into a boss portion (250) formed on the orbiting scroll and supports an outer peripheral surface (272) of the eccentric bush. A lubricant supply passage (350) for supplying lubricant to the bearing is penetratingly formed in the eccentric bush.

Abstract: A power conversion device is provided which is capable of balancing impedance relatively easily and suppressing noise caused by a common mode current when a three-phase AC output is applied to drive a motor.

Abstract: [Problem] A scroll compressor is provided which is capable of effectively reducing a pressure loss in a pathway extending from a discharge space to a discharge port. [Solution] The scroll compressor includes a discharge space 27 formed in a compressing mechanism cover 9 of a housing 11, a discharge hole 26 which is formed in a fixed scroll 21 and discharges a compressed refrigerant to the discharge space, a discharge port 51 which discharges the refrigerant to the outside of the housing, a relief passage 71 which communicates the discharge space and the discharge port with each other, and a differential pressure valve 74 which is provided in the relief passage and opens in accordance with a pressure difference between the discharge space and the discharge port. The relief passage opens in the discharge space above the discharge hole.

Abstract: The vehicle air conditioning device includes a compressor, a radiator, an outdoor heat exchanger, and an air conditioning controller, and a cabin is, air conditioned with power supplied from a battery. The air conditioning controller can perform air conditioning operation that causes a refrigerant from the compressor to radiate heat in the radiator, decompresses the refrigerant, causes the refrigerant to absorb heat in the outdoor heat exchanger so as to heat the cabin, and defrosting operation that causes the refrigerant from the compressor to radiate heat in the outdoor heat exchanger so as to defrost the outdoor heat exchanger, and determines whether it is possible to perform the defrosting operation on the basis of outside humidity.