With Sump Pressure Actuation Patents (Class 417/222.2)
  • Patent number: 11486376
    Abstract: A capacity control valve (1) includes a valve main body (10) having a first communication passage (11), a second communication passage (12), a third communication passage (13), and a main valve seat (15a), a valve element (20) having an intermediate communication passage (29), a main valve portion (21c), and an auxiliary valve portion (23d), a solenoid (30) that drives a rod (36) having an auxiliary valve seat (26c), and a first biasing member (43) that biases in the valve closing direction of the main valve portion (21c). The rod (36) is relatively moved with respect to the valve element (20) so as to open and close the auxiliary valve portion. The capacity control valve can efficiently discharge a liquid coolant irrespective of pressure of a suction chamber and lower drive force of a compressor at a liquid coolant discharging operation.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 1, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11480166
    Abstract: A capacity control valve includes a valve housing provided with a discharge port, suction ports, a control port and a primary valve driven by a solenoid. The capacity control valve further includes a differential CS valve which includes a differential CS valve body disposed so as to be relatively movable in an axial direction with respect to the primary valve bodies. The differential CS valve body divides a control pressure chamber into a discharge side control chamber communicating with the first control port and a suction side control chamber communicating with the second control port in the axial direction and operates the differential CS valve body by a differential pressure between the discharge side control chamber and the suction side control chamber so as to open the second control port and the suction port.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: October 25, 2022
    Inventors: Masahiro Hayama, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi, Keigo Shirafuji, Yoshihiro Ogawa
  • Patent number: 11473684
    Abstract: A capacity control valve includes: a valve housing having a discharge port, a suction port and a control port; a rod driven by a solenoid; a main valve configured to open and close a communication between the discharge port and the control port; an opening and closing valve biased in a valve closing direction, and configured to open and close a CS communication passage communicating with the suction port and a control fluid supply chamber formed in the valve housing; and a CS valve to open and close a communication between the control port and the suction port, the CS valve body being movable relative to the main valve body, wherein the main valve body and the CS valve body move together as the rod moves in a closed state of the main valve.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 18, 2022
    Inventors: Masahiro Hayama, Kohei Fukudome, Keigo Shirafuji, Takahiro Ejima
  • Patent number: 11473683
    Abstract: A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod arranged in the valve housing and driven by a solenoid, a CS valve 50 configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with the movement of the rod. In a non-energization state of the solenoid, the CS valve is closed and the DC valve is opened. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state, and the DC valve is throttled from an open state and thereafter transitions to the open state.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: October 18, 2022
    Inventors: Masahiro Hayama, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi, Keigo Shirafuji
  • Patent number: 11454227
    Abstract: A capacity control valve (1) includes a valve main body (10) having a first communication passage (11), a second communication passage (12), a third communication passage (13), and a main valve seat (15a), a pressure-sensitive body (24), a valve element (20) having an intermediate communication passage (29), a main valve portion (21c), and a restrictor portion (25), and a solenoid (30) that drives a rod (36). The rod (36) is relatively moved with respect to the valve element (20) so as to control an opening degree of the restrictor portion (25). The capacity control valve is capable of efficiently discharging a liquid coolant irrespective of pressure of a suction chamber and improving control stability.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: September 27, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11391388
    Abstract: A capacity control valve includes: valve housings provided with a discharge port, a suction port, and a control port; and a main valve configured to open and close a communication between the discharge port and the control port as a rod driven by a solenoid moves. The capacity control valve further includes: a pressure drive unit disposed in a suction fluid supply chamber, operated by a suction pressure Ps, and coupled to the main valve body so as to be movable together; and a CS valve having a CS valve seat and a CS valve body to open and close a communication between the control port and the suction port. The CS valve body is movable relative to the main valve body. Upon the movement of the rod 83 in a closed state of the main valve, the main valve body and the CS valve body move together.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 19, 2022
    Inventors: Kohei Fukudome, Masahiro Hayama, Keigo Shirafuji, Takahiro Ejima
  • Patent number: 11378194
    Abstract: A capacity control valve includes a valve housing provided with a discharge port, a suction port, and a control port a rod driven by a solenoid; and a main valve that includes a main valve seat and a main valve body between the discharge port and the control port in accordance with a movement of the rod. The capacity control valve V further includes a CS valve that includes a CS valve seat and a CS valve body communication between the control port and the suction port. The CS valve body is disposed so as to be movable relative to the main valve body. The main valve body and the CS valve body move together in accordance with the movement of the rod while a closed state of the main valve is maintained.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 5, 2022
    Inventors: Kohei Fukudome, Masahiro Hayama, Keigo Shirafuji
  • Patent number: 11359624
    Abstract: A capacity control valve for controlling a flow rate or pressure of a variable capacity compressor includes: a valve main body, a valve body arranged in the valve main body, a solenoid having a first plunger connected to the valve body, and a second plunger arranged between the solenoid and the valve body for regulating flow of the variable capacity compressor.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: June 14, 2022
    Inventors: Daichi Kurihara, Kohei Fukudome, Keigo Shirafuji
  • Patent number: 11326707
    Abstract: A capacity control valve (1) includes a valve main body (10) having a first communication passage (11), a second communication passage (12), a third communication passage (13), and a main valve seat (15a), a valve element (20) having an intermediate communication passage (29), a main valve portion (21c), and an auxiliary valve portion (23d), and a solenoid (30) having a plunger (35) that drives a first rod (136) and a second rod (36). The first rod (136) opens and closes the main valve portion (21c), and the second rod (36) opens and closes the auxiliary valve portion. The capacity control valve is capable of efficiently discharging a liquid coolant irrespective of pressure of a suction chamber and lowering drive force of a compressor at a liquid coolant discharging operation.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: May 10, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11319940
    Abstract: A capacity control valve includes: a housing with a Pc port, a Pd port, a first Ps port and a second Ps port; a main valve element having a main valve portion adapted to contact with and separate from a main valve seat to close and open a communication between the Pd port and the Pc port by a drive force of a solenoid; an intermediate communication path communicating with the Pc port and the first Ps port; a pressure-sensitive valve configured to open and close the intermediate communication path by an ambient pressure; and a differential pressure valve including a differential pressure valve element configured to open and close a communication between the Pc port and the second Ps port and a communication between the Pc port and a pressure-sensitive chamber by the differential pressure valve element moved by a pressure.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: May 3, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11300219
    Abstract: A variable-capacity compressor control valve is configured for easily regulating the opening degree of an in-valve release passage, and thus can effectively reduce internal circulation of refrigerant within the compressor and effectively improve the operation efficiency of the compressor. An in-valve large-opening release passage with a relatively large opening degree, which is used during the compressor actuation time, and an in-valve small-opening release passage with a relatively small opening degree, which is used during both the compressor actuation time and the normal control time (i.e., Pd?Pc control time), are formed using different passages.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: April 12, 2022
    Assignees: MAHLE International GmbH, Fujikoki Corporation
    Inventors: Masaharu Ito, Yoshiyuki Kume, Matthew R. Warren, Ernesto Jose Gutierrez
  • Patent number: 11242940
    Abstract: A capacity control valve includes a valve housing provided with a main valve seat; a main valve body that is inserted into the valve housing and includes a main valve portion which is capable of seating on the main valve seat 10a to open and close a communication between a suction port and a control port using a driving force of a solenoid; and a pressure-sensitive body that applies a biasing force to the main valve body in an opening direction according to pressure of a fluid surrounding the pressure-sensitive body. The fluid is supplied from the control port to around the pressure-sensitive body, and the fluid is supplied from the suction port to a back pressure side of the main valve body.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: February 8, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Wataru Takahashi
  • Patent number: 11221003
    Abstract: A control valve and a variable capacity compressor having a control valve or a passage connecting the control valve and a crank chamber. A fixed orifice hole is variable which is possible by selectively opening and closing a plurality of holes depending on the operation of the compressor.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: January 11, 2022
    Assignee: Hanon Systems
    Inventors: Yeol Woo Sung, Se Young Song
  • Patent number: 11199184
    Abstract: A variable displacement swash plate compressor includes a displacement control valve that is configured to change crank chamber pressure, and an opening adjusting valve that adjusts an amount of refrigerant sucked into a suction chamber. The opening adjusting valve includes a valve case, a first valve element, a second valve element, and an urging spring. The valve case has a valve seat on which the second valve element is seated. The valve seat regulates movement of the second valve element toward the first valve element. A sealing member is provided between an inner peripheral surface of the valve case that defines a second valve chamber and an outer peripheral surface of the second valve element to prevent refrigerant in the second valve chamber so that leakage between a bleed passage and a control passage is prevented.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: December 14, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kenji Yamamoto, Noriaki Satake, Shinichi Kakegawa, Shuhei Sekinaga, Shiro Hayashi, Akinobu Kanai
  • Patent number: 11156301
    Abstract: A capacity control valve V includes a valve housing provided with a Pc port, a Pd port and a Ps port; a main valve body that includes a main valve portion which comes into contact with and separates from a main valve seat 10a to close and open a communication between a Pd port and the Pc port using a driving force of a solenoid; a pressure-sensitive valve capable of opening and closing, depending on a surrounding pressure, a first communication passage through which the Pc port and the Ps port are communicable with each other; and a differential pressure valve capable of opening and closing, depending on a pressure difference, a second communication passage through which the Pc port and the Ps port are communicable with each other.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: October 26, 2021
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11149722
    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.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 19, 2021
    Assignee: Sanden Automotive Components Corporation
    Inventor: Yukihiko Taguchi
  • Patent number: 11098703
    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.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: August 24, 2021
    Assignee: Sanden Automotive Components Corporation
    Inventors: Yukihiko Taguchi, Takashi Toida, Satoshi Terauchi, Tomohiro Iguchi, Yoshie Matsuzaki
  • Patent number: 11098716
    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.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 24, 2021
    Assignee: Sanden Automotive Components Corporation
    Inventor: Taizo Sato
  • Patent number: 11053933
    Abstract: Provided is A displacement control valve which includes a valve housing, a valve element constituting a main valve that contacts and separates from a main valve seat, for opening and closing communication between discharge ports and control ports by driving force of a solenoid, a pressure-sensitive valve that opens and closes according to ambient pressure, and a pressure-sensitive valve member constituting the pressure-sensitive valve together with a pressure-sensitive element. The valve element and the pressure-sensitive valve member are formed with an intermediate communicating passage which allows communication between the control ports and the suction ports by opening and closing of the pressure-sensitive valve.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 6, 2021
    Inventors: Matthew R. Warren, Ernesto Jose Gutierrez, Daichi Kurihara, Takahiro Ejima, Wataru Takahashi, Kohei Fukudome, Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji
  • Patent number: 11035358
    Abstract: A variable displacement reciprocating piston unit includes a sensor probe, a target, a piston having a top dead center position and a bottom dead center position, and a signal processing unit. The sensor probe, the target, and the piston are located in relation to each other so that the target is moved from being absent from the sensor probe to being present at the sensor probe when the piston travels towards the top dead center position, and the target is moved from being present at the sensor probe to being absent from the sensor probe when the piston travels towards the bottom dead center position. The signal processing unit generates a signal indicating a stroke speed and a stroke length of the piston from a signal from the sensor probe indicating a presence and/or an absence of the target as the target moves relative to the sensor probe.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: June 15, 2021
    Assignees: TE CONNECTIVITY GERMANY GMBH, HANON SYSTEMS
    Inventors: Jung Myung Kwak, Yong-Hee Kim
  • Patent number: 11015587
    Abstract: A piston compressor includes a housing, a drive shaft, a fixed swash plate, a plurality of pistons, a movable body, and a control valve. The housing includes a cylinder block having a plurality of cylinder bores and a plurality of first communication passages. The movable body has a second communication passage that intermittently communicates with each of the first communication passages by rotation of the drive shaft. A flow rate of refrigerant discharged from a compression chamber into a discharge chamber changes according to a position of the movable body in a direction of an axis of the drive shaft. The control valve is configured to control a control pressure. The first communication passages are connected to the second communication passage by the movable body and disconnected from the second communication passage by the drive shaft.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: May 25, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kei Nishii, Shinya Yamamoto, Akinobu Kanai, Yoshinori Inoue
  • Patent number: 10907624
    Abstract: Provided is a variable-capacity compressor control valve that is compact and is capable of suppressing the influence of the pressure difference between the crank chamber pressure Pc, the suction pressure Ps, and the like. A valve body includes an in-valve release passage for releasing a pressure Pc in a crank chamber to a suction chamber of a compressor via a Ps inlet/outlet port. A sub valve element adapted to open or close the in-valve release passage along with movement of the plunger is provided.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: February 2, 2021
    Assignee: FUJIKOKI CORPORATION
    Inventors: Yoshiyuki Kume, Hisashi Asano, Takashi Sakamoto, Masaharu Itoh
  • Patent number: 10883480
    Abstract: A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 5, 2021
    Assignee: TGK CO., LTD.
    Inventors: Kazuhiro Irie, Masaaki Tonegawa, Hiroshi Hamada
  • Patent number: 10866019
    Abstract: Methods and systems for providing control of a heat pump of a motor vehicle are presented. In one operating mode, speed of a heat pump compressor is controlled responsive to an outlet pressure of the heat pump compressor. In a second operating mode, speed of the heat pump compressor is controlled responsive to a pressure ratio between an inlet and an outlet of the heat pump compressor.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 15, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Timothy Noah Blatchley, James George Gebbie, Clay Wesley Maranville, Angel Fernando Porras
  • Patent number: 10837431
    Abstract: A control valve includes: a body having a control chamber communication port and a suction chamber communication port; a valve element that moves toward and away from a valve hole to close and opening a bleed valve, the ports communicating with each other through the valve hole; a solenoid to generate a drive force in an opening direction of the bleed valve; and a pressure sensing element to sense a pressure in the suction chamber or a pressure in the control chamber, and generate a counterforce against the drive force from the solenoid depending on a magnitude of the sensed pressure. An opening degree of the bleed valve is controlled so that the sensed pressure becomes a set pressure. A bleed passage for delivering the refrigerant introduced through the control chamber communication port to the suction chamber even while the bleed valve is in a closed state is formed.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 17, 2020
    Assignee: TGK CO., LTD.
    Inventors: Masaaki Tonegawa, Hiroshi Hamada
  • Patent number: 10815980
    Abstract: A variable displacement swash plate type compressor includes a first and a second valve body, and a suction and a bleed window. An open degree of the suction window is minimized by the first valve body and an open degree of the bleed window is maximized by the second valve body when a suction pressure is lower than a predetermined suction pressure and a crank chamber pressure is higher than a control pressure. The open degree of the suction window is increased and the open degree of the bleed window is maximized when the suction pressure is higher than the predetermined suction pressure and the crank chamber pressure is higher than the control pressure. The open degree of the suction window and the open degree of the bleed window are decreased when the crank chamber pressure is lower than the control pressure.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: October 27, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Noriaki Satake, Shiro Hayashi, Akinobu Kanai, Kenji Yamamoto
  • Patent number: 10801480
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 13, 2020
    Assignee: TGK Co., LTD.
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Patent number: 10760559
    Abstract: A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: September 1, 2020
    Assignee: TGK CO., LTD.
    Inventors: Kazuhiro Irie, Masaaki Tonegawa, Hiroshi Hamada
  • Patent number: 10746163
    Abstract: A variable capacity compressor includes a compression chamber that compresses a working fluid, an inlet chamber to house the working fluid to be compressed, a discharge chamber to house the working fluid compressed in the compression chamber and discharged therefrom, a control pressure chamber to house a swash plate rotating in accordance with a rotation of the drive shaft, a supply passage to facilitate communication between the discharge chamber and the control pressure chamber, a bleed passage to facilitate communication between the control pressure chamber and the inlet chamber, a first control valve including a first valve portion to adjust an opening degree of the supply passage, a second control valve provided on the bleed passage and including a spool housing recess formed on the bleed passage, and a back pressure chamber between the spool and a bottom of the spool housing recess.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 18, 2020
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Masanori Amemori, Kentaro Suzuki, Takeshi Konishi, Changheon Ohk, Takayuki Endo, Yukio Kazahaya
  • Patent number: 10670012
    Abstract: Variable displacement compressor 100 has second control valve 350 for adjusting the opening degree of pressure release passage 146. Second control valve 350 includes partition member 351, which partitions valve chamber 351c and back pressure chamber 351d, and has side wall 351a surrounding valve portion 352b of spool 352, and end wall 351b connected to one end side of side wall 351a and through which shaft portion 352b of spool 352 penetrates. Furthermore, in second control valve 350, end surface 351a1 opposite to the end wall of the side wall of partition member 351 abuts on the wall surface opposite to the back pressure chamber of the valve chamber 351c. When the valve portion 352b of spool 352 abuts on the wall surface, pressure receiving portion 352a of spool 352 abuts on end wall 351b.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: June 2, 2020
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventor: Yukihiko Taguchi
  • Patent number: 10174746
    Abstract: A piston drive assembly, including: a housing enclosing each of: a plurality of cylinders, each cylinder having an axis substantially parallel to the axis of the other cylinders; a plurality of pistons, one piston in each cylinder; a wobble plate connected to each of the plurality of pistons; a swashplate rotatably fixed to a drive shaft such that the drive shaft can rotate the swash plate or the swash plate can rotate the drive shaft, wherein the drive shaft extends through the entire length of the housing.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 8, 2019
    Inventors: Ricardo Conde, Richard Kruse, Lee Jestings
  • Patent number: 10145370
    Abstract: A double-headed piston type swash plate compressor includes a rotation shaft, a housing, a swash plate, two cylinder bores, a double-headed piston, and two shoes. The double-headed piston includes two shoe holders, a neck, two heads, and two coupling portions. Each of the coupling portions includes an outer portion and an inner portion. A direction orthogonal to both of an opposing direction of the inner portion and the outer portion and the axial direction of the double-headed piston is referred to as a widthwise direction. The inner portion includes a narrow portion and a wide portion. The wide portion projects out of the narrow portion in the widthwise direction and has a larger width than the narrow portion. An outer surface of the wide portion is slidable on a wall surface of the corresponding cylinder bore when the double-headed piston reciprocates in the cylinder bores.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: December 4, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiromichi Ogawa, Shinya Yamamoto, Hiroyuki Nakaima, Takahiro Suzuki
  • Patent number: 10072655
    Abstract: A compressor system for an air conditioning service system includes a compressor having a compressor case and a compressor head, an inlet, an outlet, a low side passage fluidly connecting the inlet to the compressor head, and a high side passage fluidly connecting the outlet to the compressor head. A low side return passage fluidly connects the compressor case with the low side passage and a first valve is positioned at least partially in the low side return passage and configured to control flow in the low side return passage.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 11, 2018
    Assignees: Bosch Automotive Service Solutions LLC, Robert Bosch GmbH
    Inventors: Dylan M. Lundberg, Mark W. McMasters
  • Patent number: 10066618
    Abstract: A variable displacement compressor includes a control valve and a check valve. The control valve is in fluidic communication with a discharge chamber of the compressor and a crankcase of the compressor. The check valve is interposed between the control valve and the discharge chamber. The check valve is configured to allow flow from the discharge chamber to the control valve and to prevent flow from the control valve to the discharge chamber. The check valve includes a ball and a spring. The spring is configured to urge the ball toward a closed position. The spring is characterized by a rate of the spring and a free-length of the spring, and the rate and the free-length are selected to minimize de-stroke noise caused by a rapid change of the compressor operation to a low displacement state.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 4, 2018
    Assignee: MAHLE International GmbH
    Inventor: Matthew R. Warren
  • Patent number: 10012218
    Abstract: A variable displacement compressor having means for regulating the minimum inclination angle of a swash plate, a spring urging the swash plate in the inclination angle-increasing direction, and a spring urging the swash plate in the inclination angle-decreasing direction. The swash plate inclination angle is ?a as the sum of the urging forces of both springs is zero, when the drive shaft is not rotated; and, when the drive shaft is rotated, its inclination angle is ?b at which the sum of moments MS, MF is zero. Moment MS of rotational motion is based on selling the product of inertia in the variable-angle direction of the swash plate to decrease the inclination angle of the swash plate from ?a. Moment MF is based on the combined urging force of both springs set so that the inclination angle ?b is positioned at a minimum angle at maximum rotational speed.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: July 3, 2018
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Satoshi Terauchi, Yukihiko Taguchi
  • Patent number: 9964102
    Abstract: A variable displacement compressor includes a swash plate, a housing and a displacement control valve. The housing has a crank chamber where the swash plate is disposed, a discharge chamber and a suction chamber. The housing has plural bolt holes and is formed by separate members fastened together by plural bolts inserted through the bolt holes. The displacement control valve has a first valve member movable to connect the crank chamber and the discharge chamber, controlling the position of the first valve member to vary compressor displacement. The displacement control valve has a valve chamber and a second valve member serving to connect the crank chamber and the suction chamber in the valve chamber. The valve chamber is connected to the crank chamber by a drain passage part of which serves as the bolt hole located at the lowest of the plural bolt holes when the compressor is installed.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: May 8, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hisaya Kondo, Hiroyuki Nakaima, Naoki Koeda
  • Patent number: 9903352
    Abstract: A swash plate type variable displacement compressor includes a housing in which a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore are formed, a drive shaft, a swash plate, an actuator, and a control mechanism that controls the actuator. A pressure regulation chamber is formed in the housing. The actuator includes a control pressure chamber. The control mechanism includes a control passage that connects together the discharge chamber, the pressure regulation chamber, and the control pressure chamber, and a control valve that, by adjusting the degree of opening of the control passage, changes the pressure in the control pressure chamber to allow the movable body to move. Refrigerant in the discharge chamber flows into the control pressure chamber via the pressure regulation chamber. The pressure regulation chamber functions as a muffler that reduces the pulsation of the refrigerant.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: February 27, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroyuki Nakaima, Shinya Yamamoto, Takahiro Suzuki, Masaki Ota, Kazunari Honda, Kei Nishii, Yusuke Yamazaki
  • Patent number: 9903353
    Abstract: An actuator of a variable displacement swash compressor includes a partitioning body that is movable along the axis of a drive shaft, a movable body that changes the inclination angle of a swash plate, and a control pressure chamber defined by the partitioning body and the movable body. The movable body is moved by drawing refrigerant in the control pressure chamber from a discharge chamber. The swash plate is configured to contact and move the partitioning body as the inclination angle increases.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: February 27, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kazunari Honda, Takahiro Suzuki, Hideharu Yamashita, Hiromichi Ogawa, Shohei Fujiwara
  • Patent number: 9903362
    Abstract: In a control valve, the spring load of a spring, which biases a main valve element in a valve opening direction, is regulated, for instance. This allows a range of suction pressures Ps, where a main valve and a sub-valve are simultaneously closed until a sub-valve element is lifted from a sub-valve seat after a main valve element has been seated on a main valve seat, to be set as a deadband. The control valve is configured such that the value of a suction pressure Ps with which to open the sub-valve after the closing of the main valve and the pressure values at which the deadband takes place are set variably by the setting of a value of current supplied to the solenoid.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: February 27, 2018
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Masaaki Tonegawa
  • Patent number: 9863411
    Abstract: A control valve is configured such that a suction pressure, which is used to displace a sub-valve element in a valve opening direction after a main valve has been closed, is varied according to a value of current supplied to a solenoid. A crankcase communication port, which communicates with a crankcase of a compressor, and a suction chamber communication port, which communicates with a suction chamber of the compressor, are provided in a body. A sub-valve chamber whose diameter is larger than that of the main valve hole is formed between the crankcase communication port and a main valve hole, and a sub-valve is placed in the sub-valve chamber.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: January 9, 2018
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Masaaki Tonegawa
  • Patent number: 9850886
    Abstract: A variable displacement swash-plate compressor includes an actuator that changes the inclination angle of a swash plate. The actuator includes a movable body that moves along a drive shaft axis. The movable body includes an acting portion that pushes the swash plate. The swash plate includes a receiving portion that contacts and is pushed by the acting portion. The acting portion and the receiving portion contact each other at an acting position. A bottom dead center associated part for positioning the piston at a bottom dead center is defined on the swash plate. When the drive shaft and the acting position are viewed from a direction that is perpendicular to a top dead center plane containing the top dead center associated part and the drive shaft axis, the acting position is defined at a position overlapping with the drive shaft regardless of the inclination angle.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 26, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroyuki Nakaima, Kengo Sakakibara, Yusuke Yamazaki, Hideharu Yamashita, Shinya Yamamoto
  • Patent number: 9816498
    Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a swash plate, and an actuator, which changes the inclination angle of the swash plate. The actuator includes a partition body and a movable body, which moves in a direction along the rotational axis of the rotary shaft. The movable body includes a guide surface, which changes the inclination angle of the swash plate, and a sliding portion, which slides on the rotary shaft or on the partition body. When viewed from a direction that is perpendicular to the direction in which the rotational axis of the rotary shaft extends and perpendicular to a first direction, the guide surface is configured such that a perpendicular line or a normal line to the guide surface intersects with the rotational axis of the rotary shaft in a zone surrounded by the sliding portion.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 14, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takahiro Suzuki, Shinya Yamamoto, Hideharu Yamashita, Kazunari Honda, Kei Nishii, Masaki Ota, Yusuke Yamazaki
  • Patent number: 9784259
    Abstract: In a compressor of the present invention, a first acting portion and a second acting portion are formed at a rear end of a first cylinder portion of a movable body. The first and the second acting portions are formed by stepping across a top dead center surface, and are plane-symmetrical with respect to the top dead center surface. Further, an affected portion is formed on a front surface of a swash plate. The first and the second acting portions and the affected portion are located eccentrically to a top dead center position corresponding portion side from a drive shaft axis.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: October 10, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinya Yamamoto, Hiroyuki Nakaima, Kengo Sakakibara, Yusuke Yamazaki
  • Patent number: 9777863
    Abstract: A control valve for discharging a liquid refrigerant in a control chamber at the time of start-up of a variable capacity compressor has a movable a center post for increasing the area of a passage for discharging the liquid refrigerant when discharging the liquid refrigerant.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: October 3, 2017
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Hideki Higashidozono, Keigo Shirafuji, Toshinori Kanzaki
  • Patent number: 9726163
    Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a swash plate, and an actuator. The actuator includes a partition body, a movable body, and a coupling member located radially outward of the rotary shaft of the swash plate. The movable body has a guide surface for changing the inclination angle of the swash plate and a sliding portion that slides on the rotary shaft or the partition body. When viewed in a direction that is perpendicular to a direction in which the rotational axis of the rotary shaft extends and perpendicular to a first direction, the guide surface has a curved shape that is configured such that a normal of the guide surface and the rotational axis of the rotary shaft intersect in a zone surrounded by the sliding portion in the entire range of change in the inclination angle.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: August 8, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takahiro Suzuki, Shinya Yamamoto, Hideharu Yamashita, Kazunari Honda, Kei Nishii
  • Patent number: 9677552
    Abstract: A double-headed piston type swash plate compressor includes first and second cylinder blocks, a rotation shaft, a double-headed piston, a crank chamber, a drive force transmission member, a swash plate, a movable body, a control pressure chamber, and a support. The control pressure chamber is defined by the movable body in the housing. The control pressure chamber moves the movable body in the axial direction of the rotation shaft. The support is located on the swash plate and supported by the rotation shaft. The drive force transmission member and the movable body are located at a first side of the swash plate in the axial direction of the rotation shaft, and the support is located at a second side of the swash plate. The drive force transmission member, the movable body, and the support set the inclination angle of the swash plate relative to the rotation shaft.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: June 13, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masaki Ota, Kazunari Honda, Kei Nishii, Yusuke Yamazaki
  • Patent number: 9651035
    Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a swash plate, and an actuator capable of changing the inclination angle of the swash plate. The actuator includes a movable body. The movable body includes a sliding portion that slides on the rotary shaft or the lug member and a movable body-side transmission portion that engages with the swash plate at a position radially outward of the rotational axis of the swash plate. The movable body-side transmission portion is configured such that a perpendicular line or a normal to the movable body-side transmission portion and the rotational axis of the rotary shaft intersect with each other in a zone surrounded by the sliding portion when viewed in a direction that is perpendicular to a direction in which the rotational axis of the rotary shaft extends and perpendicular to the first direction.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: May 16, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takahiro Suzuki, Shinya Yamamoto, Hiroyuki Nakaima, Kazunari Honda, Kengo Sakakibara, Yusuke Yamazaki
  • Patent number: 9651037
    Abstract: A control valve according to an embodiment includes a body having a valve hole and a guiding passage formed coaxially with the valve hole, an actuating rod, slidably supported along the guiding passage, which is provided with a valve element, a solenoid for applying the solenoidal force in an opening or closing direction of a valve section to the valve element via the actuating rod, and a seal section, provided between the actuating rod and the guiding passage, which houses a sealing member for restricting the leakage of refrigerant from a high pressure side to a low pressure side. The actuating rod and the guiding passage are configured such that the clearance, between the actuating rod and the guiding passage, which is at a higher-pressure side of the seal section is larger than the clearance which is at a lower-pressure side of the seal section.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 16, 2017
    Assignee: TGK Co., Ltd.
    Inventors: Hidekazu Sakakibara, Takashi Kobayashi, Michiyoshi Miyazaki, Kotaka Tamotsu, Satoshi Shimazaki
  • Patent number: 9631612
    Abstract: Setting of the pressure sensing mechanism which controls an opening degree of the first valve body is changed by transmitting driving force of the driving force transmission member to the first valve body via the second valve body. According to this configuration, when the second valve body has been opened while conduction of electricity to the electromagnetic solenoid has been stopped, the refrigerant gas from the discharge chamber is supplied to the control pressure chamber via the passage, the valve chamber, the communication opening, the insertion hole, the first passage, the second passage, the housing chamber, the passage, the second pressure adjusting chamber, the communication hole, the first pressure adjusting chamber, the first shaft inner passage, and the second shaft inner passage.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: April 25, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masaki Ota, Hiroyuki Nakaima, Yusuke Yamazaki, Kengo Sakakibara, Shinya Yamamoto
  • Patent number: 9581150
    Abstract: A variable displacement swash plate type compressor includes a displacement control valve. The displacement control valve includes a drive force transmitting member, a valve member having a first valve body, a pressure sensing mechanism, which adjusts the valve opening degree of the first valve body, a communication passage, which connects a back pressure chamber and an accommodating chamber to each other, and a second valve body, which selectively opens and closes the communication passage. The first valve body opens when current supply to an electromagnetic solenoid is stopped and the pressure in a suction pressure zone is less than a threshold value. The second valve body closes when current is supplied to the electromagnetic solenoid and opens when the current supply to the electromagnetic solenoid is stopped and the pressure in the suction pressure zone is greater than or equal to the threshold value.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 28, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA JIDOSHOKKI
    Inventors: Masaki Ota, Shinya Yamamoto, Takahiro Suzuki, Kei Nishii