Patents by Inventor Hirofumi Futamata

Hirofumi Futamata 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: 20200064086
    Abstract: A heat exchanger having a polyamine on at least part of a surface of the heat exchanger. The existence of polyamine on the surface of the heat exchanger allows the odor components to be temporality held by virtue of the action of polyamine, and the odor components are not released into an interior room or the like at once in conjunction with the evaporation of free water (such as condensed water). Thus, the release of odor components is made moderate, and changes in the concentration of odor components in the interior room are reduced, so that strong odors sensed by people are suppressed. A typical example of the polyamine is PEI, and a typical example of the heat exchanger is an evaporator used in a car air-conditioner.
    Type: Application
    Filed: April 13, 2018
    Publication date: February 27, 2020
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, DENSO CORPORATION
    Inventors: Hiroshi ITO, Satoru KOSAKA, Kiyomi SAKAKIBARA, Atsushi MURASE, Kenji NAKAMURA, Takayuki HIROSE, Kazuhisa UCHIYAMA, Tomohide NISHINO, Sayuri HASHIMOTO, Hirofumi FUTAMATA
  • Patent number: 10401062
    Abstract: A cold storage heat exchanger includes a plurality of tubes, a coolant flowing in the tubes, a cold storage material container joined to the tubes, the cold storage material container defining a room that houses a cold storage material, and a distribution tank unit that distributes the coolant to the tubes. A coolant passage is formed in the tubes and the distribution tank unit. The distribution tank unit includes an aperture plate that reduces a passage cross-sectional area of the coolant passage. Among the plurality of tubes, the cold storage material container is joined to at least a tube disposed upstream in a coolant flow direction from the aperture plate in the coolant passage. Accordingly, cold storage performance may be improved.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: September 3, 2019
    Assignee: DENSO CORPORATION
    Inventors: Jun Abei, Tomohiko Nakamura, Hirofumi Futamata, Yuusuke Kitou, Toshiya Nagasawa
  • Publication number: 20160252281
    Abstract: A cold storage heat exchanger includes a plurality of tubes, a coolant flowing in the tubes, a cold storage material container joined to the tubes, the cold storage material container defining a room that houses a cold storage material, and a distribution tank unit that distributes the coolant to the tubes. A coolant passage is formed in the tubes and the distribution tank unit. The distribution tank unit includes an aperture plate that reduces a passage cross-sectional area of the coolant passage. Among the plurality of tubes, the cold storage material container is joined to at least a tube disposed upstream in a coolant flow direction from the aperture plate in the coolant passage. Accordingly, cold storage performance may be improved.
    Type: Application
    Filed: September 19, 2014
    Publication date: September 1, 2016
    Inventors: Jun ABEI, Tomohiko NAKAMURA, Hirofumi FUTAMATA, Yuusuke KITOU, Toshiya NAGASAWA
  • Patent number: 9074799
    Abstract: Multiple cooling-storage containers are arranged in respective spaces formed between neighboring refrigerant tubes. The cooling-storage container is made of a pair of outer envelope portions, each forming a side wall. Multiple convex portions and concave portions are formed in the side walls so that air passages are formed between refrigerant tubes and the concave portions. A sectional area of the air passage formed in a lower portion of the cooling-storage container below a predetermined height is made larger than that of the air passage formed in an upper portion of the cooling-storage container above the predetermined height.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: July 7, 2015
    Assignee: DENSO CORPORATION
    Inventors: Jun Abei, Tomohiko Nakamura, Hirofumi Futamata, Toshiya Nagasawa
  • Patent number: 8434324
    Abstract: An integrated unit is formed by integrally assembling an ejector, a first evaporator that evaporates refrigerant discharged from the ejector, a second evaporator that evaporates the refrigerant drawn into the ejector, a refrigerant dividing portion that adjusts a flow amount of refrigerant flowing in and divided to the nozzle portion and the second evaporator, and a joint in which a refrigerant inlet and a refrigerant outlet are formed. In the joint, there is formed a gas-liquid separation portion that causes refrigerant flowing therein to swirl to separate it into gas and liquid. The ejector, refrigerant dividing portion and joint are arranged in a longitudinal direction of the ejector.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: May 7, 2013
    Assignee: Denso Corporation
    Inventors: Tatsuhiko Nishino, Tomohiko Nakamura, Hiroshi Oshitani, Hirofumi Futamata
  • Publication number: 20120285668
    Abstract: Multiple cooling-storage containers are arranged in respective spaces formed between neighboring refrigerant tubes. The cooling-storage container is made of a pair of outer envelope portions, each forming a side wall. Multiple convex portions and concave portions are formed in the side walls so that air passages are formed between refrigerant tubes and the concave portions. A sectional area of the air passage formed in a lower portion of the cooling-storage container below a predetermined height is made larger than that of the air passage formed in an upper portion of the cooling-storage container above the predetermined height.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 15, 2012
    Applicant: DENSO CORPORATION
    Inventors: Jun Abei, Tomohiko Nakamura, Hirofumi Futamata, Toshiya Nagasawa
  • Publication number: 20110259042
    Abstract: An integrated unit is formed by integrally assembling an ejector, a first evaporator that evaporates refrigerant discharged from the ejector, a second evaporator that evaporates the refrigerant drawn into the ejector, a refrigerant dividing portion that adjusts a flow amount of refrigerant flowing in and divided to the nozzle portion and the second evaporator, and a joint in which a refrigerant inlet and a refrigerant outlet are formed. In the joint, there is formed a gas-liquid separation portion that causes refrigerant flowing therein to swirl to separate it into gas and liquid. The ejector, refrigerant dividing portion and joint are arranged in a longitudinal direction of the ejector.
    Type: Application
    Filed: March 24, 2011
    Publication date: October 27, 2011
    Applicant: DENSO CORPORATION
    Inventors: Tatsuhiko Nishino, Tomohiko Nakamura, Hiroshi Oshitani, Hirofumi Futamata