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公开(公告)号：US11936251B2
公开(公告)日：2024-03-19
申请号：US16969860
申请日：2019-01-21
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Mikio Kobayashi , Masataka Matsuda , Toru Yoshihara
CPC classification number: H02K11/33 , H02K11/02 , H03H1/0007 , H03H7/0115 , H05K1/18 , B60H1/3223 , H01L25/072 , H02K2211/03 , H05K2201/10166 , H05K2201/10378 , H05K2201/10522 , H05K2201/10568 , H05K2201/10606 , H05K2201/10757 , H05K2201/10901
Abstract: Assembly workability of an electric compressor to which an inverter circuit section and a filter circuit section are attached is improved. The inverter circuit section (3) includes an inverter control board (17), a sleeve assembly (18), and a power module (14). The inverter control board, the sleeve assembly, and the power module are integrated. The filter circuit section (4) includes a filter circuit board (66) and a support member (67). The filter circuit board (66) and the support member (67) are integrated. The inverter circuit section and the filter circuit section are structured to be capable of being stored each individually within an inverter storing section (8) from the same direction and detachably attached to the housing (2).
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公开(公告)号：US20220170461A1
公开(公告)日：2022-06-02
申请号：US17437939
申请日：2020-03-16
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Hironobu INABA , Taizo SATO , Tetsuya IMAI
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 3-1 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.-
公开(公告)号：US11349415B2
公开(公告)日：2022-05-31
申请号：US16961163
申请日：2018-12-07
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Junki Kawata
Abstract: The present invention quickly stops rotation of an electric compressor while preventing damage to switching elements. An electric compressor 1 comprises a motor drive circuit 52 having multiple switching elements IGBT Q1 to Q6, a control unit 53 that controls driving of the multiple switching elements IGBT Q1 to Q6 and drives a motor 4, and a current detection unit 54 that detects a current flowing through the motor drive circuit 52. The control unit 53 performs stop control that stops rotation of the compression mechanism 3 by performing braking control that controls drive of predetermined switching elements IGBT (Q2, Q4, Q6 and the like) among the multiple switching elements IGBT Q1 to Q6. In the brake control, when the detected current value I is lower than the first threshold I1, the control unit 53 adjusts the drive pattern of the predetermined switching elements IGBT (Q2, Q4, Q6 and the like) in order to prevent the detected current value I from exceeding the second threshold I2 that is lower than the first threshold I1.
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公开(公告)号：US20220136500A1
公开(公告)日：2022-05-05
申请号：US17438832
申请日：2020-03-16
Applicant: Sanden Automotive Components Corporation
Inventor： Tetsuya IMAI , Taizo SATO
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.-
公开(公告)号：US20210254466A1
公开(公告)日：2021-08-19
申请号：US17055968
申请日：2019-05-17
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Shinji NAKAMURA
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.
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Patent Agency Ranking
公开(公告)号：US10968963B2
公开(公告)日：2021-04-06
申请号：US16349134
申请日：2017-10-10
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Yuki Sakamoto
IPC: F16D27/112 , F16D27/14 , F16D27/10 , F16D27/00
Abstract: Provided is an electromagnetic clutch capable of shortening, even in a low temperature atmosphere, the fuse reaction time from when a rotating shaft is locked, while preventing or suppressing malfunction of the thermal fuse. An electromagnetic clutch 1 is equipped with a rotor 2, an armature 3, an electromagnetic coil unit 4, a thermal fuse 5, and a thermally actuated switch 6. The thermally actuated switch 6 is connected in series to an electromagnetic coil 41 of the electromagnetic coil unit 4 along with the thermal fuse 5. When a temperature of the thermally actuated switch 6 exceeds a switching temperature (predetermined temperature) Ts, the thermally actuated switch 6 is displaced in an electric power supply OFF direction, and thereafter, it is displaced in an electric power supply ON direction due to a reduction in temperature. The thermally actuated switch 6 turns ON/OFF the electric power supply to the electromagnetic coil 41 such that the thermal fuse vicinity temperature T1 does not exceed the operational temperature Tf of the thermal fuse 5 due to self-heating of the electromagnetic coil 41 itself generated by the electric power supplied to the electromagnetic coil 41, thereby preventing malfunction of the thermal fuse 5 due to self-heating of the electromagnetic coil 41.
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公开(公告)号：US11336213B2
公开(公告)日：2022-05-17
申请号：US16969516
申请日：2019-01-21
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Masafumi Hotta , Daisuke Hirono
Abstract: Provided is a motor control device having a function for determining a rotor position of a synchronous motor, without use of a sensor, the device prevents obtaining an erroneous rotor position, to enable stable control of the synchronous motor based on the rotor position in both the normal-control region and the flux-weakening-control region. The motor control device 1 includes: a first rotor position determining unit 19 that determines a rotor position of the synchronous motor 2 based on a current electrical angle, and a first current phase obtained from a current peak value and a difference between an induced voltage electrical angle and a current electrical angle; a second rotor position determining unit 20 that determines the rotor position of the synchronous motor 2 based on the current electrical angle, and a second current phase obtained from a flux linkage and the current peak value; and a selecting unit 21 that selects the first rotor position determining unit 19 or the second rotor position determining unit 20, based on the current peak value, and the first current phase or the second current phase.
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公开(公告)号：US20210075312A1
公开(公告)日：2021-03-11
申请号：US16981574
申请日：2019-05-17
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Hiroshi YOSHIDA , Saori KURIBARA , Takashi KANAI
Abstract: There is provided a power source input circuit capable of suppressing an oscillation phenomenon of an input current without any trouble. The power source input circuit includes a current detection resistor 21 which detects a current on the basis of a voltage generated thereacross, and a transistor Q3 whose collector is connected to a gate of a power switching element Q2. The transistor Q3 changes the voltage of a base thereof according to the voltage generated across the current detection resistor 21 and adjusts the voltage of the gate of the power switching element Q2 to allow a constant current operation to be performed. Further, a capacitor 28 is connected between the base and collector of the transistor Q3.
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公开(公告)号：US20210013782A1
公开(公告)日：2021-01-14
申请号：US16969921
申请日：2019-01-21
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Mikio KOBAYASHI
Abstract: An electric compressor is provided which is capable of reducing the number of components in an inverter circuit section installed in an inverter storing section and attaining its miniaturization as well. A sleeve assembly (18) of an inverter circuit section (3) has positioning pins (37) and (38) for an inverter control board (17) and a power module (14). The positioning pins (37) and (38) are thermally caulked in a state in which the sleeve assembly (18) is interposed by the inverter control board (17) and the power module (14) to thereby make the inverter circuit section (3) integral. The integrated inverter circuit section (3) is installed in an inverter storing section (8) constituted on an outer surface of a housing (2).
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公开(公告)号：US11149722B2
公开(公告)日：2021-10-19
申请号：US16348927
申请日：2017-11-13
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Yukihiko Taguchi
Abstract: A variable displacement compressor capable of preventing delay in pressure release of a controlled pressure chamber, such as a crank chamber. A switching valve (350) disposed downstream of a control valve of a pressure supply passage includes a main valve body (352) and a sub valve body (400). The main valve body (352) includes an internal passage (352d) providing communication between a first valve hole (104e1) communicating with a pressure supply passage (145a) between the control valve and the switching valve (350), and a second valve hole (151a) communicating with a pressure supply passage (145b) between the switching valve (350) and the crank chamber. The main valve body (352) provides communication between the second valve hole (151a) and a pressure release hole (351a1) communicating with the suction chamber, when pressure Pm in the pressure supply passage (145a) is lower than pressure Pc in the crank chamber. The sub valve body (400) closes the internal passage (352d) of the main valve body (352), when pressure Pm is lower than pressure Pc. The sub valve body (400) is lighter than the main valve body (352), and thus, when pressure Pm decreases, the sub valve body (400) actuates before the main valve body (352), to close the internal passage (352d) of the main valve body (352).
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