Abstract: It is an object to provide an inverter device capable of appropriately protecting power semiconductor elements and further realizing an optimal operation considering a withstand voltage. The inverter device includes a junction temperature estimate calculating unit which adds a temperature rise value ?T obtained from a loss P of power semiconductor elements to a temperature Tth detected by a temperature sensor to estimate a junction temperature Tj. When the junction temperature Tj is estimated, the junction temperature estimate calculating unit performs a correction in the direction of excluding an influence of heat generation of other electronic components other than the power semiconductor elements, and a wiring pattern of a control board on a temperature sensor.

Abstract: Provided is an electric compressor that can ensure necessary stiffness for stacked members including a supporting plate and a control board, without increasing the number of components. An inverter circuit portion of an inverter-equipped electric compressor includes busbars 6a (61, 62, and 63) that are each formed by a thin plate member made of metal and that each constitutes part of the wiring of the inverter circuit portion, and includes a plate-like supporting plate 6b that is formed by a resin member molded integrally with the busbars 6a. Each of the busbars 6a (61, 62, and 63) has an embedded portion (a U-phase embedded portion 611, a V-phase embedded portion 621, or a W-phase embedded portion 631) that is embedded in the supporting plate 6b.

Abstract: A control device of a vehicle air-conditioning apparatus, in a heating operation by use of a heating unit, has at least a temperature control target heat absorption heating mode in which a refrigerant that has been discharged from a compressor and has dissipated heat in the heating unit absorbs heat in a temperature control target-specific heat exchanger, and a combined heating mode in which the refrigerant that has been discharged from the compressor and has dissipated heat in the heating unit absorbs heat in an outdoor heat exchanger and the temperature control target-specific heat exchanger, and during the heating operation in the combined heating mode, performs control in such a manner as to determine an operating state that allows the refrigerant to accumulate in the outdoor heat exchanger, and switch to the temperature control target heat absorption heating mode to execute the heating operation.

Abstract: Provided is an active filter device capable of effectively reducing common mode noise and differential mode noise and optimizing filter characteristics. The active filter device includes an inverting amplifier circuit 37 that inverts and amplifies a common mode voltage and a differential amplifier circuit 64 that differentially amplifies a differential mode voltage, and an output voltage of the inverting amplifier circuit 37 is applied as a common mode compensation voltage to Y capacitors 21, 22, an output of the differential amplifier circuit 64 obtained by amplifying a voltage of a positive-side power supply line 11 is applied as a differential mode compensation voltage to a negative-side X capacitor 42, and an output of the differential amplifier circuit 64 obtained by amplifying a voltage of a negative-side power supply line 12 is applied as a differential mode compensation voltage to a positive-side X capacitor 41.

Abstract: A heat management system includes: a refrigerant circuit; a high-temperature heat medium circuit through which heat medium is heated to a high temperature by heat released from the refrigerant, and circulated; a low-temperature heat medium circuit through which heat medium is cooled to a low temperature by absorbing heat into the refrigerant, and circulated; a temperature adjustment heat exchanger to adjust a temperature of a heat management subject; a heat medium mixer connected to an upstream side of the temperature adjustment heat exchanger to mix high-temperature heat medium and low-temperature heat medium at a ratio depending on a target temperature of the heat management subject; and a branch connected to a downstream side of the temperature adjustment heat exchanger to return the heat medium having gone through the temperature adjustment heat exchanger to the high-temperature heat medium circuit and the low-temperature heat medium circuit.

Abstract: There is provided a vehicle air-conditioning device capable of smoothly achieving pre-air-conditioning for preliminarily heating a vehicle interior without forming frost on an outdoor heat exchanger or while preventing frost formation thereon as much as possible. When the temperature of a battery 55 or a motor 65 for running is higher than or equal to a predetermined specified value upon executing the pre-air-conditioning for preliminarily heating the vehicle interior before boarding, a controller 32 operates a compressor 2 to let a refrigerant discharged from the compressor radiate heat in a radiator 4, decompress the refrigerant from which the heat is radiated, and then let the refrigerant absorb heat in a waste heat recovering heat exchanger 64 without using an outdoor heat exchanger 7.

Abstract: An air conditioner for a vehicle is provided which can realize suitable temperature control when having a plurality of evaporators even if the load in each evaporator fluctuates. An air conditioner 1 for a vehicle includes at least a compressor 2, a heat absorber 9 to evaporate a refrigerant, a refrigerant-heat medium heat exchanger 64, and a control device 11, and conditions air of a vehicle interior. The control device 11 calculates target numbers of revolutions TGNCc and TGNCcb of the compressor 2 required to control the temperature of the heat absorber 9 and the temperature of a heat medium cooled by the refrigerant-heat medium heat exchanger 64, respectively, and selects the maximum value of them to control the operation of the compressor 2.

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: [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.