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公开(公告)号：US20180202424A1
公开(公告)日：2018-07-19
申请号：US15741437
申请日：2016-06-02
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Yukihiko TAGUCHI
CPC classification number: F04B39/0284 , F04B27/10 , F04B27/1045 , F04B27/1054 , F04B27/1081 , F04B27/109 , F04B27/12 , F04B27/18 , F04B39/0223 , F04B39/04 , F04B39/16
Abstract: An oil circulation ratio OCR of a compressor is reduced with a simple structure. A cylinder head 104 has a suction chamber 141 formed on the inside thereof in a radial direction and a discharge chamber 142 formed on the outside thereof in the radial direction, the suction and discharge chambers being separated by a first annular partition wall 104d. An oil storage chamber 148 is formed at a central portion of the cylinder head 104 by being separated from the suction chamber 141 by a second annular partition wall 104e. A pressure release passage 146 (101c→101d→103c→148→104e1) allows a crank chamber 140 and the suction chamber 141 to communicate with each other. The oil storage chamber 148 forms a portion of the pressure release passage 146, separates oil from a refrigerant flowing through the pressure release passage 146, and stores the oil.
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公开(公告)号：US20180187679A1
公开(公告)日：2018-07-05
申请号：US15740195
申请日：2016-06-03
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Tatsuki NOMURA , Hiroshi FUJITA , Sozaburo ASAKAWA , Masayuki NOBE , Tomokazu MIYAJI
CPC classification number: F04C18/07 , F04C18/0215 , F04C27/009 , F04C29/0057 , F04C29/021 , F04C29/028 , F04C2240/50 , F04C2240/807 , F04C2240/808
Abstract: A scroll compressor 1 includes: a scroll unit 6; a crank mechanism 44; a housing 2, 4 in which the scroll unit 6 is accommodated and which has a suction port 22 of refrigerant provided in an outer peripheral wall 2b located on the outer peripheral side of the scroll unit 6; and a sealing device 30 which seals between the housing 2, 4 and a rotary shaft 24, wherein the housing 2, 4 includes: a crank chamber 48 in which the crank mechanism 44 is positioned; a seal chamber 50 in which the sealing device 30 is positioned; a communication hole 52, 58 which communicates the crank chamber 48 with the seal chamber 50; and a first guide groove 54 which extends from an opening of the communication hole 52, 58 in the seal chamber 50 to the vicinity of the sealing device 30.
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公开(公告)号：US11867173B2
公开(公告)日：2024-01-09
申请号：US17438832
申请日：2020-03-16
Applicant: Sanden Automotive Components Corporation
Inventor： Tetsuya Imai , Taizo Sato
CPC classification number: F04C18/0215 , F04C18/0261 , F04C23/008 , F04C28/28 , F04C29/026 , F04C29/065 , F04C29/068 , F04C2240/30
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：US11750113B2
公开(公告)日：2023-09-05
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: H02P27/08 , H02M7/5387 , H02P29/68 , H02M1/14
CPC classification number: H02M7/5387 , H02M1/14 , H02P27/08 , H02P29/68
Abstract: 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. The inverter device includes an electrolytic capacitor, an inverter circuit, a temperature sensor, and a control device. When the ambient temperature of the electrolytic capacitor detected by the temperature sensor is lower than a predetermined temperature, the control device on-drives specific switching elements of the inverter circuit before the start of a normal operation of a motor, 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 at a predetermined rate of increase while keeping the motor stopped.
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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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Patent Agency Ranking
16.发明申请公开(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：US20200057458A1
公开(公告)日：2020-02-20
申请号：US16342932
申请日：2017-09-07
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Yukihiko TAGUCHI
Abstract: A control valve of a variable displacement compressor capable of preventing a decrease in control accuracy is provided. In a control valve 300, a valve chamber 321b accommodating a valve body 322 constitutes a part of a pressure supply passage for supplying refrigerant in a discharge chamber to a crank chamber, or constitutes a part of a pressure relief passage through which refrigerant in the crank chamber flows toward a suction chamber, depending on whether the valve hole 321c is open or closed by a valve portion 322a of the valve body 322. A partition portion 322b having a larger diameter than that of the valve portion 322a of the valve body 322, partitions the valve chamber 321b into a first pressure application chamber 321b1 on which the pressure in the suction chamber mainly acts, and a second pressure application chamber 321b2 on which the pressure in the crank chamber mainly acts and into which refrigerant in the discharge chamber flows when the valve hole 321c is open. A clearance between an outer peripheral surface of the partition portion 322b and an inner peripheral surface of the valve chamber 321b forms a fixed orifice of the pressure relief passage. The second pressure application chamber 321b2 is formed to have a larger inner diameter than that of the inner peripheral surface of the valve chamber 321b.
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公开(公告)号：US20190293071A1
公开(公告)日：2019-09-26
申请号：US16342961
申请日：2017-10-10
Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
Inventor： Taizo SATO
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.
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公开(公告)号：US20190074781A1
公开(公告)日：2019-03-07
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
CPC classification number: 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.
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