With Sump Pressure Actuation Patents (Class 417/222.2)
  • 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: 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: 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: 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: 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: 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: 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
  • Patent number: 9551334
    Abstract: Provided is a control valve for a variable capacity compressor, the control valve including: a valve body including a crank-chamber port, a discharge port, a suction port, a control channel formed inside the control valve such that the crank-chamber port and the discharge port communicate with each other, and a first bleeding channel formed such that the crank-channel port and the suction port communicate with each other; an operating unit provided in the valve body and including a second bleeding channel communicated from a center area to a side surface of the operating unit; and a driving unit provided in the valve body and connected to the operating unit to enable the operating unit to reciprocally move according to a current applied by an external source.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: January 24, 2017
    Assignees: DOOWON TECHNICAL COLLEGE, DOOWON ELECTRONICS CO., LTD
    Inventors: Yong Ju Lee, Geon Ho Lee
  • Patent number: 9551336
    Abstract: In a compressor that changes a discharge capacity by using an actuator, a variable displacement swash plate type compressor capable of realizing reduction in manufacture cost is provided. In the compressor of the present invention, a ring groove is formed in a movable body, and the ring groove is provided with an annular member. The annular member has a joint gap formed by a first to a third cutouts, and the third cutout is an aperture. In this compressor, the annular member moves in the ring groove based on a pressure difference between a control pressure chamber and a swash plate chamber. Thereby, in the compressor, a pressure in the control pressure chamber is regulated by regulating a flow of a refrigerant that flows to the swash plate chamber from the control pressure chamber.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: January 24, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroyuki Nakaima, Shinya Yamamoto, Kengo Sakakibara, Yusuke Yamazaki, Takahiro Suzuki
  • Patent number: 9523987
    Abstract: In a capacity control valve, a discharged-fluid-receiving part having a diameter that is larger than the diameter of a valve hole interconnecting a first valve chamber and a third valve chamber is provided to the outer periphery section of a third valve part. It is thereby possible to obtain a capacity control valve in which, when the first valve part opens, the discharged-fluid-receiving part receives the pressure of the discharged fluid, the actuation response of the valve body during an opening action is moderated, an excessive increase in the sensitivity to a rise in pressure in the crank chamber caused by a rapid increase in the amount of coolant flowing into the crank chamber is prevented, and the action of the valve body is stable.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: December 20, 2016
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Kohei Fukudome, Hideki Higashidouzono, Masayuki Futakuchi
  • Patent number: 9518568
    Abstract: An inclination angle of a swash plate of a swash plate type variable displacement compressor is rapidly changed to the maximum when electric current is supplied to an electromagnetic solenoid and therefore the compressor is operated at the maximum displacement. When a second valve body is opened, a first valve body is closed; when the second valve body is closed, a valve opening of the first valve body is controlled. Under the circumstance that electric current is supplied to the electromagnetic solenoid and an instruction for operating the compressor at the maximum displacement is issued, when the first valve body is closed, the second valve body is opened. In addition to supply of refrigerant gas from a discharge chamber to a control pressure chamber through a first supply passage, refrigerant gas is supplied from the discharge chamber to the control pressure chamber through a second supply passage.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: December 13, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masaki Ota, Shinya Yamamoto, Takahiro Suzuki, Kazunari Honda, Hideharu Yamashita
  • Patent number: 9512832
    Abstract: In a swash plate type variable displacement compressor, a lug plate includes a cylinder chamber and first and second guide surfaces. Inner peripheral edges of the first and second guide surfaces are defined respectively at parts where the peripheral edge of the cylinder chamber and the guide surfaces overlap with each other. When the inclination angle of a swash plate of the compressor is maximum, first and second guided surfaces and the first and second guide surfaces, respectively are brought into line contact with each other at a first position. At this time, first and second slide contact widths are maximum. When the inclination angle of the swash plate is minimum, the first and second guided surfaces and the first and second guide surfaces, respectively are brought into line contact with each other at a second position. At this time, the first and second slide contact widths are minimum.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: December 6, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinya Yamamoto, Hiroyuki Nakaima, Kengo Sakakibara, Yusuke Yamazaki
  • Patent number: 9512833
    Abstract: A control valve according to one embodiment includes a shaft that transmits the solenoidal force to a valve element. The control valve also provides for stable operation of a variable displacement compressor even under high-temperature and high-pressure environments. A solenoid includes a bottomed sleeve into which the pressure of refrigerant is introduced, a core secured coaxially to the sleeve, a plunger, contained in the sleeve on its bottom side, which is displaceable integrally with the shaft in a direction of axis line, a first spring that applies the biasing force in a valve opening direction to the shaft, a second spring that applies the biasing force in a valve closing direction to the plunger, and a shaft support member, which is press-fitted such that the shaft support member is secured to an inner wall of the sleeve near its bottom portion. The second spring is set between the shaft support member and the plunger.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: December 6, 2016
    Assignee: TGK Co., Ltd.
    Inventors: Ryousuke Yoshihiro, Morimitsu Kajiwara
  • Patent number: 9506459
    Abstract: A variable displacement swash plate type compressor includes a control valve having a valve body and a solenoid portion A refrigerant circuit has first and second pressure monitoring points. A load based on a point-to-point differential pressure, which is a differential pressure between the pressure at the first and second pressure monitoring points, is applied to the valve body. At least one of a load based on a DS differential pressure, which is a differential pressure between the pressure in a discharge pressure zone and the pressure in a suction pressure zone, and a load based on a CS differential pressure, which is a differential pressure between the pressure in the control pressure chamber and the pressure in the suction pressure zone, acts on the valve body in the same direction as the direction of the load applied to the valve body based on the point-to-point differential pressure.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: November 29, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masaki Ota, Takahiro Suzuki, Kei Nishii, Koji Kawamura
  • Patent number: 9500189
    Abstract: A structure of a variable swash plate compressor includes: a rotatable shaft having a flow path through which a refrigerant flows; a rotor fixed and coupled to the shaft and has a rotor arm formed at one side of the rotor; a swash plate connected to the rotor arm by a hinge pin and mounted on the shaft so that an inclination angle is variable with respect to the shaft; a compressive coil spring installed on the shaft between the swash plate and the rotor; a lift slidably coupled to the shaft and connected to the swash plate; and a fixing device formed in the shaft and fixes the lift so as to maintain the inclination angle of the swash plate, thereby basically preventing an operational delay of the compressor, securing performance at the time of initially operating an air conditioning device, and improving marketability.
    Type: Grant
    Filed: December 14, 2013
    Date of Patent: November 22, 2016
    Assignee: Hyundai Motor Company
    Inventor: Nam-Ho Park
  • Patent number: 9488293
    Abstract: A microvalve includes a first plate having a surface, a recessed region provided within the surface, a fluid port provided within the recessed region, and a sealing structure extending about the fluid port. A second plate defines a non-movable portion and a movable portion formed within the first opening and having an axis. A surface of the non-movable portion abuts the surface of the first plate, the non-movable portion having first and second openings formed therethrough. The first opening has a notch formed in each of two longitudinally extending side walls thereof. The movable portion defines a displaceable member connected to the non-movable portion by a convoluted spring formed in a second opening. The displaceable member has a tab extending outwardly from each of two longitudinally extending side walls thereof, each tab positioned within one of the notches.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: November 8, 2016
    Assignee: DunAn Microstaq, Inc.
    Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Joe A. Ojeda, Sr., Gengxun K. Gurley
  • Patent number: 9228576
    Abstract: A compressor includes an actuator. The actuator is arranged in a swash plate chamber, while being rotational integrally with a drive shaft. With reference to the swash plate, the actuator is located in a region in which a first cylinder bore is located. The actuator includes a rotation body fixed to the drive shaft, a movable body, and a control pressure chamber. A link mechanism is located between the drive shaft and the swash plate. As the inclination angle of the swash plate is changed, the link mechanism moves the top dead center position of a first head by a greater amount than the top dead center position of a second head.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: January 5, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinya Yamamoto, Takahiro Suzuki, Kazunari Honda, Kei Nishii, Yusuke Yamazaki, Masaki Ota
  • Patent number: 9181937
    Abstract: A displacement control valve includes an electromagnetic solenoid, a drive force transmitting body actuated, and a pressure sensitive portion having a pressure sensitive body that selectively extends and contracts in the movement direction of the drive force transmitting body in correspondence with pressure in a pressure sensitive chamber. A first valve body is arranged in the pressure sensitive body to adjust the cross-sectional area of an outlet passage. A second valve body is connected to the drive force transmitting body to adjust the cross-sectional area of a supply passage. The pressure sensitive body is movable in the movement direction of the drive force transmitting body in the pressure sensitive chamber. The pressure sensitive chamber is configured to communicate with the control pressure chamber. The pressure sensitive body is urged by the pressure in the control pressure chamber in the direction in which the first valve body closes.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: November 10, 2015
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, EAGLE INDUSTRY CO., LTD
    Inventors: Masaki Ota, Noriyuki Shintoku, Ryo Matsubara, Naoki Nishimura, Hideki Higashidozono, Keigo Shirafuji, Toshinori Kanzaki
  • Patent number: 9132714
    Abstract: A capacity control valve for increasing the ability to drain liquid refrigerant from a control chamber during startup of a variable-capacity compressor without changing the control valve characteristics has a spring acting in the direction of valve opening provided between an adapter and a free end of a pressure-sensitive body in the extension and contraction direction thereof and having an annular seat surface, and a third valve part having an annular engaging surface for opening and closing a suction-side passage by engaging and disengaging with the seat surface of the adapter.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: September 15, 2015
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Masayuki Futakuchi, Kohei Fukudome, Kenji Moriwaki, Masahiro Hayama, Toshinori Kanzaki, Ryosuke Cho
  • Publication number: 20150139824
    Abstract: A pump control apparatus includes an actuator that varies a discharge capacity of a pump, and a regulator that regulates a control pressure led to the actuator. The regulator includes: a driving pressure port to which an average discharge pressure is led; a source pressure port to which a high pressure side discharge pressure is led; a signal pressure port to which a signal pressure is led; and a spool that regulates the control pressure using the high pressure side discharge pressure as a source pressure by moving upon reception of the average discharge pressure and the signal pressure. A driving pressure receiving surface that receives the average discharge pressure is formed inside the spool, and a signal pressure receiving surface that receives the signal pressure is formed in an outer peripheral step portion of the spool.
    Type: Application
    Filed: February 24, 2014
    Publication date: May 21, 2015
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventor: Midori Nagashima
  • Publication number: 20150132153
    Abstract: This variable displacement compressor comprises: a housing; a piston; a drive shaft rotatably supported by the housing; a rotor that rotates in unison with the drive shaft; a swash plate that rotates in synchronism with the rotation of the rotor connected via a connecting means; a conversion mechanism that converts the rotation of the swash plate into a reciprocating motion of the piston; and a pressure control valve that is capable of controlling the internal pressure of a crank chamber. The variable displacement compressor is characterized in that: the connecting means directly or indirectly connects a first arm projecting from the rotor and a second arm projecting from the swash plate; and the drive shaft is eccentrically inserted into a through-hole that is perforated through the swash plate.
    Type: Application
    Filed: May 20, 2013
    Publication date: May 14, 2015
    Applicant: SANDEN CORPORATION
    Inventor: Satoshi Terauchi
  • Publication number: 20150118074
    Abstract: In a swash plate type variable displacement compressor, a lug plate includes a cylinder chamber and first and second guide surfaces. Inner peripheral edges of the first and second guide surfaces are defined respectively at parts where the peripheral edge of the cylinder chamber and the guide surfaces overlap with each other. When the inclination angle of a swash plate of the compressor is maximum, first and second guided surfaces and the first and second guide surfaces, respectively are brought into line contact with each other at a first position. At this time, first and second slide contact widths are maximum. When the inclination angle of the swash plate is minimum, the first and second guided surfaces and the first and second guide surfaces, respectively are brought into line contact with each other at a second position. At this time, the first and second slide contact widths are minimum.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinya YAMAMOTO, Hiroyuki NAKAIMA, Kengo SAKAKIBARA, Yusuke YAMAZAKI
  • Patent number: 9010138
    Abstract: A variable displacement compressor adjusts the pressure in a control pressure chamber and controls the displacement in accordance with the adjusted pressure. Refrigerant is supplied via a supply passage, and released via a bleed passage. The compressor includes a first control valve for adjusting the cross-sectional area of the supply passage for refrigerant. The compressor further includes a second control valve that adjusts the cross-sectional area of the bleed passage in accordance with the opening/closing state of the first control valve. The second control valve adjusts the cross-sectional area of the bleed passage such that the cross-sectional area when the first control valve is in the closed state is larger than that when the first control valve is in the opened state. The back pressure chamber is located in a section of the bleed passage that is located between the second control valve and the control pressure chamber.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 21, 2015
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Yoshida, Osamu Hiramatsu
  • Patent number: 9011109
    Abstract: In a swash plate type variable capacity compressor that changes a stroke of a piston by controlling the pressure of a crank chamber (6), lubrication oil contained in refrigerant gas is maximally prevented from being circulated outside the compressor. Some of discharged refrigerant gas in a discharge chamber (22) flows into the crank chamber (6) through a communication passage (25) (25a and 25b) and a control valve (27), while some of the discharged refrigerant gas flows out to a suction chamber (21) from the crank chamber (6) through a second communication passage (26) and an orifice (28), and the pressure of the crank chamber (6) is controlled through a balance between an inflow amount and an outflow amount. Oil storage chamber (30) extends downstream of the control valve (27) on the first communication passage (25) to separate oil and store the separated oil. Oil return passage (31) returns the oil stored in the oil storage chamber (30) to the crank chamber (6).
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: April 21, 2015
    Assignee: Sanden Corporation
    Inventors: Tsutomu Ishikawa, Satoshi Terauchi
  • Publication number: 20150104334
    Abstract: A variable displacement swash plate compressor includes a control pressure chamber and a displacement control valve that controls the pressure of the control pressure chamber. The displacement control valve includes an electromagnetic solenoid, a driving force transmission member, a valve body, and a pressure sensing mechanism. An accommodation chamber accommodates the pressure sensing. A valve chamber accommodates the valve body having a valve opening degree determined by an urging force applied to the valve body through the driving force transmission member and by an urging force applied to the valve body by the expansion and contraction of the pressure sensing mechanism. The valve body and the pressure sensing mechanism form a valve unit. When the electromagnetic solenoid is deactivated, the pressure of the accommodation chamber acts on a back surface of the pressure sensing mechanism so that a force in the open direction is applied to the valve unit.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 16, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masaki OTA, Hiromichi OGAWA, Hideharu YAMASHITA, Kei NISHII
  • Publication number: 20150093263
    Abstract: A swash plate type variable displacement compressor includes a collection and supply mechanism. The collection and supply mechanism has collection passages, supply passages, an annular space, an inlet port, and an outlet port. The inlet port is communicable with a working collection passage of the collection passages. The outlet port is communicable with a working supply passage of the supply passages. When the inclination angle of the swash plate is maximum, residual refrigerant gas in a compression chamber of collection phase is collected through the working collection passage and the collected refrigerant gas is supplied to a compression chamber of supply phase. On the other hand, when the inclination angle is less than the maximum, residual refrigerant gas is supplied no more into the supply-phase compression chamber.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 2, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshio KIMOTO, Toru ONISHI, Kengo SAKAKIBARA, Yuki YOKOI, Takahisa BAN, Ryo MATSUBARA, Noriyuki SHINTOKU
  • Publication number: 20150086391
    Abstract: In a swash plate type variable displacement compressor, a rear housing has a pressure regulation chamber into which a rear end of a drive shaft body, a projection of a second cylinder block, a second sliding bearing, and a rear end of a second support member project. In the compressor, when a drive shaft is rotated, heat is generated in the drive shaft body, the projection, the second sliding bearing, and the second support member to heat the refrigerant gas in the pressure regulation chamber. Accordingly, in the compressor, temperature of the refrigerant gas in the pressure regulation chamber is hard to drop. Therefore, the pressure of the refrigerant gas flowing from the pressure regulation chamber to the pressure control chamber is varied quickly and a movable body is preferably moved with the pressure in the pressure control chamber.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinya YAMAMOTO, Masaki OTA, Hiroyuki NAKAIMA, Shohei FUJIWARA, Takahiro SUZUKI