公开(公告)号：US20210301802A1

公开(公告)日：2021-09-30

申请号：US16328245

申请日：2017-08-10

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Shinji NAKAMURA

IPC: F04B27/10 ,  F04B39/06 ,  F04B49/12

Abstract: In a variable displacement compressor 100, transmitting member 116 transmits rotational motion of rotor 112 to swash plate 111 and supports swash plate 111. Guide member 117 guides inclining motion of swash plate 111 such that a top dead center position of piston 126 is maintained to be substantially constant. Members 116, 117 are separately formed at different portions on a rotor end face 112a. In the variable displacement compressor 100, first contacted member 118 contacted with transmitting member 116, and second contacted member 119 contacted with guide member 117, are separately formed at different portions on swash plate end face 111b. The transmitting member 116 and the first contacted member 118 extend on rotor 112 and swash plate 111, respectively, from a top dead center side region V1 to a bottom dead center side region V2 of the piston.

公开(公告)号：US20210263113A1

公开(公告)日：2021-08-26

申请号：US17275894

申请日：2020-02-14

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Hiroshi YOSHIDA ,  Yunhai JIN

IPC: G01R31/66 ,  H01H9/22 ,  B60L1/00 ,  B60L3/12

Abstract: Provided is an interlock device for a high voltage apparatus which enables not only the diagnosis of the connected or non-connected state of a connector during normal operation of the interlock device, but also the detection of a failure of the interlock device itself, including a failure of the interlock loop. The device includes an interlock loop 16 annexed to an HV connector 7 for connecting an electric compressor to an HV battery 8, a detecting signal output unit, a first switching element, a controlling voltage switching circuit operable, in a closed state of the interlock loop, to switch a voltage applied to a control electrode of the first switching element according to an output of the detecting signal output unit, a second switching element operable, in an open state of the interlock loop, to apply to the control electrode of the first switching element an output of the controlling voltage switching circuit so as to cause an ON/OFF state of the first switching element to be inverted from when the interlock loop is in the closed state, and a failure diagnosis unit.

公开(公告)号：US11098716B2

公开(公告)日：2021-08-24

申请号：US16342961

申请日：2017-10-10

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Taizo Sato

IPC: F04C15/00 ,  F01C21/00 ,  F04C18/02 ,  F04C29/02 ,  F04C29/00 ,  F04B53/16 ,  F01C1/02 ,  F01C21/10

Abstract: The scroll-type compressor comprises a fixed scroll and an orbiting scroll engaged with each other; a back pressure control valve 50 inserted from the large-diameter side of the stepped-shaped pressure release passage L4 which communicates between a suction chamber H1 and a back pressure chamber H3 which applies a back pressure for pressing the orbiting scroll against the fixed scroll. The scroll-type compressor further comprises an O-ring 60 fitted in a circumferential groove 53a formed in the outer peripheral surface of the valve 50, and a ring member 61 press-fitted into the large-diameter side of the pressure release passage L4, and holds the valve 50 between the ring member 61 and the stepped portion. Then, the compressive stress is unlikely to be applied to the valve 50, and the deformation of the valve 50 is reduced to prevent the reduction in the control accuracy of the back pressure.

公开(公告)号：US10778129B2

公开(公告)日：2020-09-15

申请号：US16063975

申请日：2017-01-12

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Masafumi Hotta ,  Daisuke Hirono

IPC: H02P21/09 ,  H02P21/22 ,  F25B1/00 ,  H02P27/12

Abstract: In a motor control device, a voltage phase detecting unit sets a voltage phase of applied voltage to be applied to a motor based on a deviation between a target d-axis current set by a target d-axis current setting unit and an actual d-axis current detected by a rotor position detecting unit and an actual rotational speed detected by a rotational speed detecting unit. Here, a correction amount calculating unit determines whether or not a rotor has rotated by one period of mechanical angle based on the rotor position detected by the rotor position detecting unit and calculates an average value of deviations between target d-axis current and actual d-axis current in each period of mechanical angle as a correction amount, and a second addition/subtraction unit corrects a target d-axis current by a correction amount.

公开(公告)号：US10516354B2

公开(公告)日：2019-12-24

申请号：US16084799

申请日：2017-02-24

Applicant: Sanden Automotive Components Corporation

Inventor： Takeo Tsukamoto ,  Masafumi Hotta ,  Daisuke Hirono

IPC: H02P6/182

Abstract: To provide a motor control device capable of determining a rotor position with high accuracy not only in normal control but also in flux-weakening control. The motor control device includes: a first rotor position determining unit 28 that determines a rotor position of a synchronous motor by using a rotor position calculation formula with, as parameters, current electrical angle or induced voltage electrical angle, and first current phase or first induced voltage phase obtained based on current peak value and [(induced voltage electrical angle)−(current electrical angle)]; a second rotor position determining unit 29 that determines a rotor position of the synchronous motor by using a rotor position calculation formula with, as parameters, current electrical angle or induced voltage electrical angle, and second current phase or second induced voltage phase obtained based on current peak value and flux linkage of a rotor of the synchronous motor; and a selecting unit 30 that selects the first or second rotor position determining unit 28, 29.

公开(公告)号：US20220316476A1

公开(公告)日：2022-10-06

申请号：US17615751

申请日：2020-06-23

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Atsuo TESHIMA

IPC: F04C18/02

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.

公开(公告)号：US20220200482A1

公开(公告)日：2022-06-23

申请号：US17600770

申请日：2020-04-14

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Yuki MAKIMURA ,  Masataka MATSUDA ,  Shogo FUJISAKI ,  Masatoshi SAITO

IPC: H02M7/5387 ,  H02P27/08 ,  H02M1/14 ,  H02P29/68

Abstract: [Problem] An inverter device is provided which is capable of more quickly raising an internal temperature of an electrolytic capacitor within a permissible range of a ripple voltage to shorten a non-operating time. [Solution] The inverter device includes an electrolytic capacitor 1, an inverter circuit 2, a temperature sensor 4, and a control device 3. When the ambient temperature of the electrolytic capacitor 1 detected by the temperature sensor 4 is lower than a predetermined temperature, the control device 3 on-drives specific switching elements of the inverter circuit 2 before the start of a normal operation of a motor 5, and executes a warming up operation of allowing a current capable of controlling a ripple voltage of a DC voltage within a permissible range to flow through the motor 5 at a predetermined rate of increase while keeping the motor 5 stopped.

公开(公告)号：US11098703B2

公开(公告)日：2021-08-24

申请号：US16494935

申请日：2018-02-09

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Yukihiko Taguchi ,  Takashi Toida ,  Satoshi Terauchi ,  Tomohiro Iguchi ,  Yoshie Matsuzaki

IPC: F04B27/18

Abstract: Provided is a variable displacement compressor capable of preventing intrusion of foreign matter into a second control valve. A variable displacement compressor 100 is equipped with a first control valve 300 controlling the opening degree of a supply passage 145, a check valve 350, a second control valve 400 controlling the opening degree of a discharge passage 146, and a back-pressure relief passage 147. The second control valve 400 has a back-pressure chamber 410 communicating with an intermediate supply passage 145b1, a valve chamber 420 in which a valve hole 103d and a discharge hole 431a are open and which constitutes a part of the discharge passage 146, a dividing member 430 dividing the back-pressure chamber 410 and the valve chamber 420 from each other, and a spool 440. In a state in which the first control valve 300 closes the supply passage 145 and in which a valve seat side end surface 442a of a valve portion 442 of the spool 440 is spaced away from a valve seat 103f to a maximum degree, an end wall side end surface 442b of the valve portion 442 abuts an end wall 432 of the dividing member 430, whereby communication between the valve chamber 420 and the back-pressure chamber 410 via a through-hole 432a of the end wall 432 is cut off.

公开(公告)号：US20220410048A1

公开(公告)日：2022-12-29

申请号：US17777198

申请日：2020-09-18

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Misako KABURAGI ,  Atsuo TESHIMA

IPC: B01D45/16 ,  B04C3/00

Abstract: To improve separation performance of oil. An oil separation structure 55 includes a partition member 62 configured to partition the inside of a separation chamber 42 in the up-down direction. The partition member 62 includes a cylindrical support portion 71 supported by an inner circumferential surface 63 of the separation chamber 42 and a cylindrical swirl acceleration portion having an upper end side continuously formed from the support portion 71, having a smaller diameter than the support portion 71, and having a lower end side closed, and the swirl acceleration portion has a communication path 75 formed, the communication path 75 communicating the radial inside and the radial outside with each other, and accelerates swirling of refrigerant, the refrigerant having descended while swirling along the inner circumferential surface 63 of the separation chamber 42.

公开(公告)号：US11454116B2

公开(公告)日：2022-09-27

申请号：US17055968

申请日：2019-05-17

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Shinji Nakamura

IPC: F01C1/02 ,  F01C19/12 ,  F01C21/10

Abstract: A housing of a scroll type expansion machine includes: a suction port formed at a position on the opposite side to a drive shaft with a fixed scroll interposed therebetween; a discharge port formed on the side of a drive-side bearing closer to the tip end of the drive shaft; a low pressure chamber formed on the outer side of an orbiting-side scroll portion when viewed from the axial direction of the drive shaft; and a tip end-side low-pressure space being a space in which a sealing member is disposed, and has: a partition wall partitioning the tip end-side low-pressure space and the low-pressure chamber from each other; and a communication space communicating the tip end-side low-pressure space with the low-pressure chamber.