Patents by Inventor Kohei Fukudome

Kohei Fukudome has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210372396
    Abstract: A capacity control valve V includes a valve housing, a primary valve opened and closed by a driving force of a solenoid, a pressure-sensitive valve disposed in a pressure-sensitive chamber, and a differential pressure valve opened and closed by a differential pressure valve body moved by a pressure. A control port and a suction port communicate with each other through an intermediate communication path by opening and closing the pressure-sensitive valve. An adapter is provided with an accommodation portion accommodating a differential pressure valve body, and first urging member and a second urging member are interposed in the accommodation portion on both sides of the differential pressure valve in an opening and closing direction with the differential pressure valve body interposed therebetween.
    Type: Application
    Filed: May 22, 2019
    Publication date: December 2, 2021
    Inventors: Daichi KURIHARA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Masahiro HAYAMA, Takahiro EJIMA, Wataru TAKAHASHI
  • Publication number: 20210363980
    Abstract: A capacity control valve includes a valve housing provided with a discharge port, suction ports, a control port allowing a control fluid of a control pressure Pc to pass therethrough and a primary valve including a primary valve seat and a primary valve body driven by a solenoid and opening and closing a communication between the discharge port and the control port by the movement of the primary valve body. The capacity control valve further includes a CS valve which includes a CS valve body, a first spring urging the CS valve body in a closing direction, and a second spring urging the CS valve body in an opening direction, the control port and the suction port being opened at a valve closed position of the primary valve body, the control port and the suction port being closed at a valve opened position of the primary valve body.
    Type: Application
    Filed: July 9, 2019
    Publication date: November 25, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI, Yoshihiro OGAWA
  • 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
  • Publication number: 20210285434
    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 movably arranged in the valve housing and driven by a solenoid, a CS valve 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, the CS valve is closed and the DC valve is closed. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state and the DC valve transitions from a closed state to an open state.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 16, 2021
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Publication number: 20210285433
    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 driven by a solenoid, a CS valve 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 a movement of the rod.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 16, 2021
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Publication number: 20210270378
    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: Application
    Filed: August 7, 2019
    Publication date: September 2, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Patent number: 11085431
    Abstract: Provided is a displacement control valve capable of quickly reducing pressure in a control chamber to a level of pressure kept during continuous driving, at the time of the startup of a variable displacement compressor. The valve housing is provided with a through hole constituting a part of a first communicating passage that communicates with a pressure chamber at one end thereof and that is communicable with a second valve chest at the other end thereof.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: August 10, 2021
    Inventors: Kohei Fukudome, Daichi Kurihara, Keigo Shirafuji, Hideki Higashidozono
  • 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
  • Publication number: 20210190228
    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: Application
    Filed: January 21, 2019
    Publication date: June 24, 2021
    Inventors: Masahiro HAYAMA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI
  • Publication number: 20210180715
    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: Application
    Filed: December 26, 2018
    Publication date: June 17, 2021
    Inventors: Masahiro HAYAMA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Wataru TAKAHASHI
  • Publication number: 20210131413
    Abstract: A capacity control valve includes a CS valve which opens and closes a communication between the control fluid and the suction fluid by the movement of rods and an urging member configured to urge the primary valve body and the rods in opposite directions and the primary valve body and the rods are disposed so as to be relatively movable in an axial direction.
    Type: Application
    Filed: July 9, 2019
    Publication date: May 6, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI, Yoshihiro OGAWA
  • Publication number: 20210123422
    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: Application
    Filed: July 9, 2019
    Publication date: April 29, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI, Yoshihiro OGAWA
  • Publication number: 20210123423
    Abstract: A capacity control valve includes a valve housing provided with a discharge port, suction ports, and a control port and a primary valve including a primary valve seat and a primary valve body driven by a solenoid, the primary valve being configured to open and close a communication between the discharge port and the control port in accordance with a movement of the primary valve body. The capacity control valve further includes a differential CS valve which is openable and closable by a pressure difference between the control pressure Pc and the suction pressure Ps and an electromagnetic CS valve that is openable and closable so as to close the control port and the suction port in a non-energized state of the solenoid 80 in accordance with the movement of the primary valve body.
    Type: Application
    Filed: July 9, 2019
    Publication date: April 29, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI, Yoshihiro OGAWA
  • Publication number: 20210102532
    Abstract: A displacement control valve includes a housing a first, a second, and a third chamber; a valve body having a first reciprocating valve part that opens or closes discharge paths in the first chamber; and a solenoid that applies electromagnetic force to the valve body in the direction that closes the first valve part. The control valve has a spool valve part formed on the external circumference of the valve body and a spool seating part formed on the internal circumference of the valve housing and that is opened while the first valve part is closed and vice versa upon reciprocation of the valve body to control the rate of flow between a control chamber and an inlet chamber.
    Type: Application
    Filed: March 20, 2018
    Publication date: April 8, 2021
    Inventors: Daichi KURIHARA, Kohei FUKUDOME, Masahiro HAYAMA, Keigo SHIRAFUJI
  • Publication number: 20210048018
    Abstract: A capacity control valve (1) for controlling a flow rate or pressure of a variable capacity compressor according to a valve opening degree of a valve section includes: a valve main body (10) having a first valve chamber (14), a second valve chamber (15) and a third valve chamber (16); a valve body (20) having an intermediate communication passage (26) for allowing communication between the first valve chamber and the third valve chamber, a first valve part (21a) arranged in the first valve chamber, a second valve part (21b) for opening and closing communication between the third valve chamber and the second valve chamber, and a third communication hole for allowing communication between the third valve chamber and the intermediate communication passage; a solenoid (30) having a first plunger connected to the valve body; and a second plunger (37) arranged between the solenoid and the valve body.
    Type: Application
    Filed: July 3, 2018
    Publication date: February 18, 2021
    Inventors: Daichi KURIHARA, Kohei FUKUDOME, Keigo SHIRAFUJI
  • Publication number: 20210048017
    Abstract: A capacity control valve (1) for controlling a flow rate or pressure of a variable capacity compressor according to a valve opening degree of a valve section includes: a valve main body (10) having a first valve chamber (14), a second valve chamber (15) and an interior space (16); a valve body (21) having an intermediate communication passage (26) for allowing communication between the first valve chamber and the interior space, a first valve part (21c1) arranged in the first valve chamber, a second valve part (21b1) for opening and closing communication between the interior space and the second valve chamber, and a shaft part (21a) arranged in the interior space; a solenoid (30); a pressure-sensitive body (22) arranged in the interior space; and an auxiliary communication part (21f) which is arranged in the interior space and which allows communication between the interior space and the intermediate communication passage.
    Type: Application
    Filed: July 3, 2018
    Publication date: February 18, 2021
    Inventors: Daichi KURIHARA, Kohei FUKUDOME, Keigo SHIRAFUJI
  • Publication number: 20210033081
    Abstract: A capacity control valve includes: 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: Application
    Filed: February 14, 2019
    Publication date: February 4, 2021
    Inventors: Masahiro HAYAMA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI
  • Publication number: 20210033082
    Abstract: A capacity control valve includes: a valve housing having a Pc port, a Ps port and a Pd port; a main valve element which includes a main valve portion coming contacting and separating from a main valve seat opening and closing communication between the Pd port and the Pc port by a drive force of a solenoid; an intermediate communication path communicating the Pc port with the Ps port; and a pressure-sensitive valve opening and closing the intermediate communication path by an ambient pressure, in which the valve housing have a differential pressure valve housed therein, the differential pressure valve including a differential pressure valve element and opening and closing a communication between the Pc port and the Ps port by the differential pressure valve element moved by an operation force of an operation member operated by a discharge pressure Pd from the Pd port.
    Type: Application
    Filed: February 14, 2019
    Publication date: February 4, 2021
    Inventors: Masahiro HAYAMA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI
  • Publication number: 20200400134
    Abstract: A capacity control valve for controlling a capacity of a fluid includes: a valve housing; a main valve closing and opening a communication between a Pc port and a Pd port when a main valve portion of a main valve element driven by a drive force of a solenoid comes into contact with and separates from a main valve seat; a pressure-sensitive valve which is opened by an ambient pressure; a hollow tube member which forms a part of the pressure-sensitive valve and allows the Pc port to communicate with a Ps port through a hollow communication path formed therein when the pressure-sensitive valve is opened; and an auxiliary communication path which allows the Pc port to communicate with the Ps port independently of the pressure-sensitive valve, in which the auxiliary communication path is configured to be able to increase a flow path cross-sectional area after the main valve is closed.
    Type: Application
    Filed: February 26, 2019
    Publication date: December 24, 2020
    Inventors: Daichi KURIHARA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Masahiro HAYAMA, Takahiro EJIMA, Wataru TAKAHASHI
  • Publication number: 20200370673
    Abstract: An electromagnetic valve has a valve housing; a valve body disposed inside the valve housing and movable in a reciprocating manner; an urging member configured to urge the valve body in one direction; and a drive device which is connected to the valve housing and applies a drive force to the valve body. A drive rod of the drive device includes a guide portion which faces an inner peripheral surface of a fixed iron core such that a movement of the drive rod is guided in an axial direction and a groove portion which is recessed in an inward radial direction from the guide portion and the groove portion is continuously formed from an inside of the valve housing to an inside of a movable iron core.
    Type: Application
    Filed: August 27, 2018
    Publication date: November 26, 2020
    Inventors: Kohei FUKUDOME, Daichi KURIHARA, Keigo SHIRAFUJI