Patents by Inventor Jun YAMAOKA

Jun YAMAOKA 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: 20250035126
    Abstract: A blower includes a shaft and a centrifugal fan. The centrifugal fan includes a plurality of blades, a shroud and a main plate. Each of the plurality of blades has a leading edge and a trailing edge. At each blade, a negative pressure surface of an air inlet section of the blade, which is closer to the leading edge than the trailing edge, has a projection that projects toward a positive pressure surface of an adjacent one of the plurality of blades. At least a portion of the positive pressure surface of the air inlet section is inclined toward a forward side in a rotational direction of the centrifugal fan to progressively extend toward the forward side in the rotational direction as the portion of the positive pressure surface of the air inlet section extends toward the main plate.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: Mari FUKADA, Jun YAMAOKA
  • Publication number: 20240410375
    Abstract: In a centrifugal fan, a tangent line, which is tangent to a positive pressure surface of a blade and passes through a trailing edge of the blade, is defined as a first tangent line. A virtual circle is centered on a rotational axis and passes through the trailing edge. A tangent line, which is tangent to the virtual circle and passes through the trailing edge, is defined as a second tangent line. An angle, which is placed in front of the first tangent line in a rotational direction and is on an outer side of the virtual circle relative to the second tangent line, is defined as an outlet angle. When a change in the outlet angle is viewed at each of a plurality of locations along the trailing edge, the trailing edge has at least one inflection point.
    Type: Application
    Filed: August 21, 2024
    Publication date: December 12, 2024
    Inventors: Ryosuke INOUE, Jun YAMAOKA
  • Publication number: 20240392800
    Abstract: A centrifugal blower includes a case, an electric motor supported by the case at a motor support position, and a fan driven by the electric motor. The fan includes: a boss installed to an output shaft; a main plate extending outward from the boss in a radial direction; a plurality of blades extending from the main plate toward one side in an axial direction; and a side plate joined to an end portion of each of the plurality of blades, which faces the one side in the axial direction. A weight of the main plate is larger than a weight of the side plate. The main plate and the side plate are both inclined toward another side opposite to the one side in the axial direction as the main plate and the side plate approach an outer side in the radial direction.
    Type: Application
    Filed: August 5, 2024
    Publication date: November 28, 2024
    Inventors: Fumiya ISHII, Jun Yamaoka, Mari Fukada
  • Patent number: 12103364
    Abstract: An air discharge device includes a duct that defines a flow passage through which a working air flow to be discharged passes, and a hole forming member defining an air discharge hole as an outlet of the working air flow. The hole forming member has a vortex generation structure configured to generate an auxiliary vortex having a vortex characteristic including a vortex rotation direction and a vortex axis direction. The vortex characteristic of the auxiliary vortex is different from that of a lateral vortex generated by the working air flow at a downstream side of the air discharge hole. The vortex generation structure is configured in the hole forming member so that the auxiliary vortex collides with the lateral vortex in a state where at least one of the vortex rotation direction and the vortex axial direction of the vortex characteristic is different from that of the lateral vortex.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: October 1, 2024
    Assignee: DENSO CORPORATION
    Inventors: Jun Yamaoka, Masaharu Sakai, Yuuji Okamura, Shogo Hayakawa, Yasuki Omori, Satoshi Takotani, Takashi Kaneko, Marie Nagahama, Yasuhiko Niimi, Yusuke Komatsubara, Takahito Nakamura
  • Publication number: 20240317702
    Abstract: A xanthene compound with excellent heat resistance is provided together with a method for producing the same. The xanthene compound is represented by the formula (1).
    Type: Application
    Filed: June 17, 2022
    Publication date: September 26, 2024
    Applicants: TAIYO HOLDINGS CO., LTD., TAIYO FINE CHEMICALS CO., LTD.
    Inventors: Tomoya TAYAMA, Jun YAMAOKA, Go SAHARA
  • Publication number: 20240247661
    Abstract: A centrifugal blower includes a plurality of blades, a shroud, a main plate and a tubular portion. An air flow passage is formed between each adjacent two of the blades. When the blades are rotated, air, which is suctioned from one axial side into a suction port is conducted through the air flow passage and is radially outwardly discharged. The shroud has a cover region, which faces another axial side and is shaped in a convex arcuate form. An axial end part of the tubular portion, which faces the one axial side, has an end surface. The end surface and a second virtual line are parallel to each other, or a distance, which is measured between the end surface and the second virtual line in the axial direction, is progressively increased from a radially inner part to a radially outer part of the end surface.
    Type: Application
    Filed: April 1, 2024
    Publication date: July 25, 2024
    Inventors: Mari FUKADA, Shuzo Oda, Jun Yamaoka
  • Patent number: 12005761
    Abstract: An air discharge device includes an air discharge unit for discharging an air flow. The air discharge unit includes at least one main hole from which an air flow is blown out as a working air flow, and a separation structure configured to separate a central portion of a thickness of a velocity boundary layer of the working air flow from a center line of the main hole at a downstream side of the main hole.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: June 11, 2024
    Assignee: DENSO CORPORATION
    Inventors: Jun Yamaoka, Masaharu Sakai, Yuuji Okamura, Yasuhiko Niimi, Takahito Nakamura, Yusuke Komatsubara, Marie Nagahama, Yasuki Omori, Shogo Hayakawa, Satoshi Takotani
  • Patent number: 11987100
    Abstract: A fluid discharge device is for discharging a fluid includes a duct defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage. The fluid discharge device includes a grill portion disposed in the fluid flow passage to adjust a flow direction of the fluid blown from the opening. The grill portion includes at least an adjustment fin rotatably arranged in the fluid flow passage, and is provided with an auxiliary flow passage that guides a part of the fluid flowing through the fluid flow passage to the opening as an auxiliary flow. The auxiliary flow passage is configured together with the adjustment fin to adjust a flow direction of the auxiliary flow discharged from the auxiliary flow passage to be aligned with the flow direction of the fluid flowing through the fluid flow passage.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: May 21, 2024
    Assignee: DENSO CORPORATION
    Inventors: Yusuke Komatsubara, Hitoshi Ninomiya, Takahito Nakamura, Jun Yamaoka, Marie Nagahama
  • Patent number: 11945285
    Abstract: The air discharge device includes a duct defining: a main flow path through which an air flow passes; and a main hole opened in a flat shape to discharge the air flow as a working air flow toward a downstream from the main flow path. A throttle portion is provided in the duct to reduce a flow path height of the main flow path from an upstream of the air flow toward a downstream of the air flow. A plurality of partitions are arranged to divide the main flow path in a major direction into a pair of side flow paths and at least one center flow path. The plurality of partitions are disposed in the duct such that a flow path width of the center flow path is reduced from the upstream of the air flow toward the downstream of the air flow.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: April 2, 2024
    Assignee: DENSO CORPORATION
    Inventors: Yasuhiro Takeuchi, Etsuro Yoshino, Yuuji Okamura, Jun Yamaoka, Masaharu Sakai, Yusuke Komatsubara, Yasuhiko Niimi, Tatsuya Yoshida, Hidetaka Nomoto
  • Patent number: 11718157
    Abstract: An air discharge device is configured to discharge an air flow. The air discharge device includes a main hole for discharging an air flow as a working air flow, an auxiliary hole provided around the main hole to discharge a support air flow, and a vortex suppression structure configured to suppress development of vortices generated in a velocity boundary layer of the working air flow at a downstream side of an outlet of the main hole. This vortex suppression structure is configured to make a central portion of the thickness of the velocity boundary layer of the working air flow at the downstream side of the outlet of the main hole to be closer to a mainstream of the support air flow, at the downstream side of the outlet of the main hole.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: August 8, 2023
    Assignee: DENSO CORPORATION
    Inventors: Jun Yamaoka, Masaharu Sakai, Yasuhiko Niimi, Takahito Nakamura, Yusuke Komatsubara, Marie Nagahama, Yasuki Omori, Shogo Hayakawa, Satoshi Takotani, Yuuji Okamura, Tatsuya Yoshida
  • Patent number: 11370275
    Abstract: A fluid discharge device includes a base portion defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage, and a grill portion disposed to adjust a flow direction of the fluid blown from the opening. The grill portion includes a flow passage forming body defining a main flow passage and an auxiliary flow passage. In the flow passage forming body, the auxiliary flow passage surrounds the main flow passage and the auxiliary flow discharged from the auxiliary flow passage flows outside of the main flow discharged from the main flow passage. The flow passage forming body is configured such that a direction of the auxiliary flow discharged from the auxiliary flow passage corresponds to the direction of the main flow discharged from the main flow passage, when the flow direction of the fluid blown out of the opening is adjusted.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: June 28, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yusuke Komatsubara, Hitoshi Ninomiya, Takahito Nakamura, Jun Yamaoka
  • Publication number: 20210291630
    Abstract: The air discharge device includes a duct defining: a main flow path through which an air flow passes; and a main hole opened in a flat shape to discharge the air flow as a working air flow toward a downstream from the main flow path. A throttle portion is provided in the duct to reduce a flow path height of the main flow path from an upstream of the air flow toward a downstream of the air flow. A plurality of partitions are arranged to divide the main flow path in a major direction into a pair of side flow paths and at least one center flow path. The plurality of partitions are disposed in the duct such that a flow path width of the center flow path is reduced from the upstream of the air flow toward the downstream of the air flow.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Inventors: Yasuhiro TAKEUCHI, Etsuro YOSHINO, Yuuji OKAMURA, Jun YAMAOKA, Masaharu SAKAI, Yusuke KOMATSUBARA, Yasuhiko NIIMI, Tatsuya YOSHIDA, Hidetaka NOMOTO
  • Publication number: 20210245575
    Abstract: An airflow generating device includes an airflow generating portion, a duct, and a controller. The airflow generating portion is configured to generate an airflow. The duct is configured to guide the airflow to a blowing outlet through which the airflow is blown out toward a passenger in a vehicle cabin. The controller is configured to cause the airflow to be intermittently blown out through the blowing outlet by controlling a frequency of a pulse voltage applied to the air flow generating portion and a duty ratio of a pulse width to a pulse period of the pulse voltage. The controller is configured to control the duty ratio and the frequency of the voltage such that the airflow is blown out through the blowing outlet at a speed between a predetermined lower limit, inclusive, and a maximum lower limit, non-inclusive, which is greater than the lower limit.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 12, 2021
    Inventors: Etsuro YOSHINO, Yasuhiro TAKEUCHI, Yuuji OKAMURA, Jun YAMAOKA, Masaharu SAKAI, Yusuke KOMATSUBARA, Kazushi SHIKATA, Yasuhiko NIIMI
  • Patent number: 10958133
    Abstract: In an electric motor, a magnetic bearing generates an electromagnetic force between multiple permanent magnets and a coil and rotatably supports an other side of a rotation shaft in an axis line direction. The rotation shaft is configured to be capable of being inclined with a rotation center line using a bearing side of the rotation shaft as a fulcrum. An electronic control device controls a current that flows to the coil such that an axis line of the rotation shaft approaches the rotation center line due to a supporting force which is the electromagnetic force between the multiple permanent magnets and the coil. Accordingly, the rotation shaft is rotatably supported to be freely rotatable by a magnetic bearing and the bearing.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 23, 2021
    Assignees: DENSO CORPORATION, SOKEN, INC., National University Corporation Shizuoka University
    Inventors: Koji Ito, Masanori Yasuda, Shinji Makita, Jun Yamaoka, Masao Tokunaga, Etsuro Yoshino, Junichi Asama
  • Publication number: 20210046805
    Abstract: A fluid discharge device includes a base portion defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage, and a grill portion disposed to adjust a flow direction of the fluid blown from the opening. The grill portion includes a flow passage forming body defining a main flow passage and an auxiliary flow passage. In the flow passage forming body, the auxiliary flow passage surrounds the main flow passage and the auxiliary flow discharged from the auxiliary flow passage flows outside of the main flow discharged from the main flow passage. The flow passage forming body is configured such that a direction of the auxiliary flow discharged from the auxiliary flow passage corresponds to the direction of the main flow discharged from the main flow passage, when the flow direction of the fluid blown out of the opening is adjusted.
    Type: Application
    Filed: November 4, 2020
    Publication date: February 18, 2021
    Inventors: Yusuke KOMATSUBARA, Hitoshi NINOMIYA, Takahito NAKAMURA, Jun YAMAOKA
  • Publication number: 20210046803
    Abstract: A fluid discharge device is for discharging a fluid includes a duct defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage. The fluid discharge device includes a grill portion disposed in the fluid flow passage to adjust a flow direction of the fluid blown from the opening. The grill portion includes at least an adjustment fin rotatably arranged in the fluid flow passage, and is provided with an auxiliary flow passage that guides a part of the fluid flowing through the fluid flow passage to the opening as an auxiliary flow. The auxiliary flow passage is configured together with the adjustment fin to adjust a flow direction of the auxiliary flow discharged from the auxiliary flow passage to be aligned with the flow direction of the fluid flowing through the fluid flow passage.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Yusuke KOMATSUBARA, Hitoshi NINOMIYA, Takahito NAKAMURA, Jun YAMAOKA, Marie NAGAHAMA
  • Publication number: 20210031596
    Abstract: An air discharge device includes an air discharge unit for discharging an air flow. The air discharge unit includes at least one main hole from which an air flow is blown out as a working air flow, and a separation structure configured to separate a central portion of a thickness of a velocity boundary layer of the working air flow from a center line of the main hole at a downstream side of the main hole.
    Type: Application
    Filed: October 7, 2020
    Publication date: February 4, 2021
    Inventors: Jun YAMAOKA, Masaharu SAKAI, Yuuji OKAMURA, Yasuhiko NIIMI, Takahito NAKAMURA, Yusuke KOMATSUBARA, Marie NAGAHAMA, Yasuki OMORI, Shogo HAYAKAWA, Satoshi TAKOTANI
  • Publication number: 20210016634
    Abstract: An air discharge device includes a duct that defines a flow passage through which a working air flow to be discharged passes, and a hole forming member defining an air discharge hole as an outlet of the working air flow. The hole forming member has a vortex generation structure configured to generate an auxiliary vortex having a vortex characteristic including a vortex rotation direction and a vortex axis direction. The vortex characteristic of the auxiliary vortex is different from that of a lateral vortex generated by the working air flow at a downstream side of the air discharge hole. The vortex generation structure is configured in the hole forming member so that the auxiliary vortex collides with the lateral vortex in a state where at least one of the vortex rotation direction and the vortex axial direction of the vortex characteristic is different from that of the lateral vortex.
    Type: Application
    Filed: October 7, 2020
    Publication date: January 21, 2021
    Inventors: Jun YAMAOKA, Masaharu SAKAI, Yuuji OKAMURA, Shogo HAYAKAWA, Yasuki OMORI, Satoshi TAKOTANI, Takashi KANEKO, Marie NAGAHAMA, Yasuhiko NIIMI, Yusuke KOMATSUBARA, Takahito NAKAMURA
  • Publication number: 20210017977
    Abstract: An air blowing device includes a duct portion and a passage variable device. The duct portion forms a main passage through which an air flow passes, and an outlet is defined downstream of the main passage to blow out the air flow. The passage variable device is configured to change a passage area of the main passage so that the air flow becomes a pulsating flow and is blown out from the outlet.
    Type: Application
    Filed: July 17, 2020
    Publication date: January 21, 2021
    Inventors: Tatsuya YOSHIDA, Masaharu SAKAI, Jun YAMAOKA, Hidetaka NOMOTO, Etsuro YOSHINO, Yasuhiro TAKEUCHI
  • Publication number: 20210016635
    Abstract: An air discharge device is configured to discharge an air flow. The air discharge device includes a main hole for discharging an air flow as a working air flow, an auxiliary hole provided around the main hole to discharge a support air flow, and a vortex suppression structure configured to suppress development of vortices generated in a velocity boundary layer of the working air flow at a downstream side of an outlet of the main hole. This vortex suppression structure is configured to make a central portion of the thickness of the velocity boundary layer of the working air flow at the downstream side of the outlet of the main hole to be closer to a mainstream of the support air flow, at the downstream side of the outlet of the main hole.
    Type: Application
    Filed: October 7, 2020
    Publication date: January 21, 2021
    Inventors: Jun YAMAOKA, Masaharu SAKAI, Yasuhiko NIIMI, Takahito NAKAMURA, Yusuke KOMATSUBARA, Marie NAGAHAMA, Yasuki OMORI, Shogo HAYAKAWA, Satoshi TAKOTANI, Yuuji OKAMURA, Tatsuya YOSHIDA