Patents by Inventor Shuzo Oda

Shuzo Oda 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).

  • Patent number: 11448077
    Abstract: A method for manufacturing a turbo fan unit includes a step for preparing multiple fan blades and an other-side side plate, and a step for connecting each of the multiple fan blades to the other-side side plate by a welding process. In the preparing step, one of the fan blade and the side plate is prepared, in which a connecting-surface forming portion having a connecting surface and a welding projection protruded from the connecting surface is formed. The connecting surface connects one of the fan blade and the side plate to the other one of the fan blade and the side plate. In the connecting step, the welding projection is melted down and the connecting surface is connected to an opposing surface, which is the surface of one of the fan blade and the side plate and which is opposing to the connecting surface.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: September 20, 2022
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda
  • Patent number: 11421706
    Abstract: A centrifugal blower includes: a centrifugal fan having plural blades arranged around a fan axis and a separation plate to blow out air in a radial direction after being sucked from one side in an axial direction; a fan casing housing the centrifugal fan; a partition plate that defines a first air passage and a second air passage arranged on the other side of the first air passage in the axial direction; and a separation cylinder arranged inside the plural blades in the radial direction. The separation cylinder expands in the radial direction as extending toward the other side in the axial direction, and is shaped to extend outward in the radial direction obliquely to the axial direction at the other end position of the separation cylinder positioned at the other end in the axial direction.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: August 23, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yuya Suzuki, Sho Kosaka, Shuzo Oda, Shouichi Imahigashi
  • Patent number: 11332052
    Abstract: A centrifugal blower device includes a rotating shaft, a turbo fan unit and a casing. A shroud ring of the turbo fan unit and a cover portion of the casing form a gap between them. The gap includes a radial gap formed between the cover portion and the shroud ring in a radial direction and an axial gap formed between the cover portion and the shroud ring in an axial direction. The radial gap is located at a position outside of a shroud-side inner peripheral end in the radial direction. The axial gap is located at a position inside of the radial direction in the radial direction. A minimum gap dimension of the radial gap is smaller than a minimum gap dimension of the axial gap. A shortest distance between the shroud-side inner peripheral end and the cover portion is larger than the minimum gap dimension of the radial gap.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 17, 2022
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda, Shouichi Imahigashi
  • Patent number: 11286945
    Abstract: A fan main body member of a turbofan has multiple blades disposed around a fan axial center, a shroud ring which is coupled to each of the multiple blades, and a fan hub portion which is coupled to each of the multiple blades on a side opposite from the shroud ring. An other end side plate of the turbofan is fitted to the radially outer side of the fan hub portion and joined to an other side blade end portions of each of the multiple blades. In addition, an outer diameter of the fan hub portion is smaller than an inner diameter of the shroud ring. In addition, the multiple blades, the shroud ring, and the fan hub portion are integrally formed.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 29, 2022
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda
  • Patent number: 11255334
    Abstract: A centrifugal blower includes a turbofan. The turbofan includes blades, a shroud ring, and a main panel. Each blade includes a leading edge that is located inward of the shroud ring in a radial direction of the turbofan, and a trailing edge that is located on an outer side in the radial direction of the turbofan. The leading edge includes a second side region located on the second side in the rotation axis direction, and a first side region located on the first side of the second side region in the rotation axis direction. The first side region is located on the first side in the rotation axis direction compared with the trailing edge. Stepped portions are formed only in a part of the leading edge, the stepped portions being formed in the first side region or in the first side region and the second side region.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: February 22, 2022
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda
  • Publication number: 20210270287
    Abstract: A centrifugal fan includes first blades and second blades connected via a separation plate. A side plate supports the first blades located on one side in an axial direction, and a main plate supports the second blades on the other side in the axial direction. The separation plate has an inner diameter larger than or equal to an outer diameter of the main plate and larger than or equal to a largest inner diameter of the second blade. The separation plate has an outer diameter smaller than or equal to an inner diameter of the side plate and smaller than or equal to a smallest outer diameter of the first blade.
    Type: Application
    Filed: May 18, 2021
    Publication date: September 2, 2021
    Inventors: Sho KOSAKA, Shuzo ODA
  • Publication number: 20210262485
    Abstract: A centrifugal blower includes a box, a filter, an impeller, a scroll casing, a bell mouth, a partition wall, and a separation tube. The scroll casing defines an air passage gradually increasing from a nose portion in a circumferential direction. The partition wall divides the air passage into an upper passage and a lower passage. The separation tube includes an air introducing plate to partially cover the impeller and defining an air inlet portion and a tubular portion that extends from the air inlet portion through the impeller. On a virtual plane parallel to a rotational axis of the impeller, an outer edge of the air introducing plate extends and a passage between the filter and the upper passage is divided by the separation tube into a first passage cross-section closer to the nose portion and a second passage cross-section that is smaller than the first passage cross-section.
    Type: Application
    Filed: May 12, 2021
    Publication date: August 26, 2021
    Inventors: Sho KOSAKA, Shuzo ODA
  • Patent number: 11092162
    Abstract: A centrifugal blower includes: a centrifugal fan, which includes a shroud ring; and a case. The case includes a cover portion that covers a surface of the shroud ring located on one side in an axial direction. The cover portion includes a recess formed in a cover opposing surface, which is opposed to the shroud ring, and the recess is shaped in a form of a circle. The shroud ring includes at least one projection that is formed in a ring opposing surface, which is opposed to the cover portion. A gap is formed between the cover portion and the shroud ring. A shortest distance between a radially inner end part of the shroud ring and the cover portion is set to be larger than a shortest distance between a surface of the projection and a surface of the recess.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 17, 2021
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Fumiya Ishii, Shuzo Oda, Masanori Yasuda
  • Patent number: 11085459
    Abstract: A centrifugal blower includes a centrifugal fan and a case that houses the centrifugal fan. A blade of the centrifugal fan has an intake side edge portion extending from a shroud inward in a radial direction. The intake side edge portion has a negative pressure side inclined portion inclined to a negative pressure surface side of the blade with respect to an axial direction. The negative pressure side inclined portion has an inclination length in the axial direction, and the inclination length is larger in a reverse flow portion of the intake side edge portion close to the shroud than in a radially innermost portion of the intake side edge portion located at an innermost side in the radial direction.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda, Shouichi Imahigashi
  • Publication number: 20210239126
    Abstract: A centrifugal blower includes an outer rotor, and a turbo fan. The turbo fan includes blades, an other end plate, and a cylinder portion. The cylinder portion is located inside the other end plate, and is fixed to the outer rotor. A surface of the outer rotor configures a rotor guide surface that guides an air flow toward a channel provided between adjacent blades. Each blade has a leading edge side portion located radially inside the cylinder portion. An outer end portion of the rotor guide surface in the radial direction is located at the same position in the axial direction as a one side cylinder end portion of the cylinder portion in the axial direction, in a state where a rotor contact portion of the outer rotor and a blade contact portion of the leading edge side portion are in contact with each other.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Inventors: Fumiya ISHII, Shuzo ODA, Masanori YASUDA
  • Publication number: 20210239128
    Abstract: In a cross section of a flow passage formed to conduct a flow of air from an inside/outside air box to an upper air passage of a scroll casing while the cross section of the flow passage is taken along an imaginary plane which includes an outer edge of an air guide plate and is parallel to a rotational axis of an impeller, a passage section, which is located on one radial side of a separation tube where a nose of the scroll casing is placed, is defined as a first opening section, and another passage section, which is located on an opposite radial side of the separation tube, which is opposite to the nose, is defined as a second opening section. A passage cross-sectional area of the second opening section is larger than a passage cross-sectional area of the first opening section.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Inventors: Sho KOSAKA, Shuzo ODA, Masanori YASUDA
  • Patent number: 11015610
    Abstract: A centrifugal blower includes an outer rotor, and a turbo fan. The turbo fan includes blades, an other end plate, and a cylinder portion. The cylinder portion is located inside the other end plate, and is fixed to the outer rotor. A surface of the outer rotor configures a rotor guide surface that guides an air flow toward a channel provided between adjacent blades. Each blade has a leading edge side portion located radially inside the cylinder portion. An outer end portion of the rotor guide surface in the radial direction is located at the same position in the axial direction as a one side cylinder end portion of the cylinder portion in the axial direction, in a state where a rotor contact portion of the outer rotor and a blade contact portion of the leading edge side portion are in contact with each other.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: May 25, 2021
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Fumiya Ishii, Shuzo Oda, Masanori Yasuda
  • Publication number: 20210123451
    Abstract: A centrifugal blower includes a centrifugal fan and a separation cylinder. The centrifugal fan has a separation plate. The separation cylinder is disposed inward of the blades in the radial direction of the centrifugal fan. The separation plate has an inner end surface extending from the one side to the other side in the axial direction at a position of an inner end in the radial direction. The separation cylinder has a separation cylinder end surface extending from the one side to the other side in the axial direction at a position of an end on the other side in the axial direction. A height of one of the separation cylinder end surface and the inner end surface in the axial direction is larger than a height of the other of the separation cylinder end surface and the inner end surface in the axial direction.
    Type: Application
    Filed: January 6, 2021
    Publication date: April 29, 2021
    Inventors: Yuya SUZUKI, Sho KOSAKA, Shuzo ODA, Shinichiro HIRAI
  • Publication number: 20210108652
    Abstract: A centrifugal blower includes: a centrifugal fan having plural blades arranged around a fan axis and a separation plate to blow out air in a radial direction after being sucked from one side in an axial direction; a fan casing housing the centrifugal fan; a partition plate that defines a first air passage and a second air passage arranged on the other side of the first air passage in the axial direction; and a separation cylinder arranged inside the plural blades in the radial direction. The separation cylinder expands in the radial direction as extending toward the other side in the axial direction, and is shaped to extend outward in the radial direction obliquely to the axial direction at the other end position of the separation cylinder positioned at the other end in the axial direction.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Yuya SUZUKI, Sho KOSAKA, Shuzo ODA, Shouichi IMAHIGASHI
  • Patent number: 10808714
    Abstract: A fan main body member of a turbofan has multiple blades disposed around a fan axial center, a shroud ring coupled to each of the blades, and a fan hub portion coupled to each of the blades on a side opposite from the shroud ring. An other end side plate of the turbofan is joined to each of the other side blade end portions of the blade in a state of being fitted to the radially outer side of the fan hub portion. A fitting gap between the other end side plate and the fan hub portion is formed such that an outflow velocity of air when air passes through the fitting gap and outflows is reduced as compared to when air passes through a virtual reference gap that corresponds to the fitting gap and outflows.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 20, 2020
    Assignee: DENSO CORPORATION
    Inventors: Fumiya Ishii, Shuzo Oda
  • Patent number: 10625574
    Abstract: A ventilation apparatus blows air into a vehicle compartment of a vehicle. The ventilation apparatus has a blower, a duct, a blowing outlet, guide vanes, and a turning mechanism. The blowing outlet is provided with the duct. The blowing outlet guides the air to flow along a lower surface of the duct. The guide vanes change a flow velocity component of the air in a lateral direction of the vehicle by guiding the air to flow along the guide vanes. The guide vanes are arranged in the duct on an upstream side of the blowing outlet and distanced from each other in the lateral direction. According to the above-described configuration, it is possible to provide a ventilation apparatus that can change a flow direction of air in the lateral direction of the vehicle while suppressing a pressure loss of air and a damage of the ventilation apparatus.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: April 21, 2020
    Assignee: DENSO CORPORATION
    Inventors: Toshinori Ochiai, Shuzo Oda
  • Publication number: 20200003062
    Abstract: A method for manufacturing a turbo fan unit includes a step for preparing multiple fan blades and an other-side side plate, and a step for connecting each of the multiple fan blades to the other-side side plate by a welding process. In the preparing step, one of the fan blade and the side plate is prepared, in which a connecting-surface forming portion having a connecting surface and a welding projection protruded from the connecting surface is formed. The connecting surface connects one of the fan blade and the side plate to the other one of the fan blade and the side plate. In the connecting step, the welding projection is melted down and the connecting surface is connected to an opposing surface, which is the surface of one of the fan blade and the side plate and which is opposing to the connecting surface.
    Type: Application
    Filed: September 10, 2019
    Publication date: January 2, 2020
    Inventors: Fumiya ISHII, Shuzo ODA
  • Publication number: 20190389344
    Abstract: A centrifugal blower device includes a rotating shaft, a turbo fan unit and a casing. A shroud ring of the turbo fan unit and a cover portion of the casing form a gap between them. The gap includes a radial gap formed between the cover portion and the shroud ring in a radial direction and an axial gap formed between the cover portion and the shroud ring in an axial direction. The radial gap is located at a position outside of a shroud-side inner peripheral end in the radial direction. The axial gap is located at a position inside of the radial direction in the radial direction. A minimum gap dimension of the radial gap is smaller than a minimum gap dimension of the axial gap. A shortest distance between the shroud-side inner peripheral end and the cover portion is larger than the minimum gap dimension of the radial gap.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Inventors: Fumiya ISHII, Shuzo ODA, Shouichi IMAHIGASHI
  • Publication number: 20190390676
    Abstract: A centrifugal blower device has a turbo fan unit and a casing. The casing includes a first casing member and a second casing member. One of the first casing member and the second casing member includes a first step portion having a first surface, a second step portion having a second surface, and a third step portion having a third surface. Each of the first surface, the second surface and the third surface forms a part of an outer surface of the one of the casing members and has a position different from one another in an axial direction. The second surface is located at a position closer than the first surface to the other one of the first casing member and the second casing member. The third surface is located at a position closer than the second surface to the other one of the casing members.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Inventors: Fumiya ISHII, Shuzo ODA, Masanori YASUDA
  • Publication number: 20190368498
    Abstract: A centrifugal blower includes a turbofan. The turbofan includes blades, a shroud ring, and a main panel. Each blade includes a leading edge that is located inward of the shroud ring in a radial direction of the turbofan, and a trailing edge that is located on an outer side in the radial direction of the turbofan. The leading edge includes a second side region located on the second side in the rotation axis direction, and a first side region located on the first side of the second side region in the rotation axis direction. The first side region is located on the first side in the rotation axis direction compared with the trailing edge. Stepped portions are formed only in a part of the leading edge, the stepped portions being formed in the first side region or in the first side region and the second side region.
    Type: Application
    Filed: August 15, 2019
    Publication date: December 5, 2019
    Inventors: Fumiya ISHII, Shuzo ODA