Patents by Inventor Hirofumi Horiuchi

Hirofumi Horiuchi 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: 7066243
    Abstract: The evaporator includes the upper side and lower header members 10 and 50 disposed at the upper and lower end of the core 1. One end of each tube 6 constituting the upstream-side tube group P1 is connected to the inlet-side tank 11, while the other end to the lower header member 50. One end of each tube 7 constituting the downstream-side tube group P2 is connected to the outlet-side tank 12, while the other end to the lower header member 50. The refrigerant flowed into the inlet-side tank 11 is introduced into the outlet-side tank 12 by passing through the upstream-side tube group P1, the lower header member 50 and the downstream-side tube group P2, so that the refrigerant evaporates by exchanging heat with ambient air A. Accordingly, it improves the heat exchange performance and decreases the thickness.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: June 27, 2006
    Assignee: Showa Denko K.K.
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Patent number: 6973804
    Abstract: This duplex-type heat exchanger is adapted to a vapor compression type refrigeration cycle in which a condensed refrigerant is decompressed and then evaporated. This duplex-type heat exchanger is integrally equipped with a subcooler S in which the condensed refrigerant exchanges heat with the ambient air A to be subcooled and an evaporator E in which the decompressed refrigerant exchanges heat with the ambient air A to be evaporated. Heat exchange is performed between the refrigerant passing through the subcooler S and the refrigerant passing through the evaporator E, to thereby cool the refrigerant in the subcooler S and heat the refrigerant in the evaporator E. Accordingly, according to this heat exchanger, a high refrigeration effect can be obtained while avoiding the pressure rise of the refrigerant.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: December 13, 2005
    Assignee: Showa Denko K.K.
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Publication number: 20050269066
    Abstract: The invention relates to heat exchangers for use in motor vehicles or for industrial use, for example, to heat exchangers for use as evaporators, condensers, oil coolers, intercoolers, heater cores, etc. The invention provides a heat exchanger comprising pairs of plates with each plate of the pair having formed on one side thereof a peripheral ridge, central ridge and channel dividing U-shaped ridges which are formed by forging or cutting. Each pair of plates are fitted together and joined, with channel recesses thereof opposed to each other to form a flat tube and a plurality of U-shaped divided fluid passageways in a U-shaped fluid channel inside the tube. Each pair of adjacent flat tubes are joined by spectacle-shaped header members interposed between the upper ends of the tubes and each comprising a front and a rear fluid passing tube portion and a connecting portion therebetween to provide a front and a rear header in communication with the upper ends of the flat tubes.
    Type: Application
    Filed: August 15, 2005
    Publication date: December 8, 2005
    Applicant: SHOWA DENKO K.K.
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Patent number: 6874570
    Abstract: An integrated heat exchanger is constituted by different kinds of heat exchangers such as a radiator for use in engine-cooling systems and a condenser for use in air-conditioning systems which is low in manufacturing cost, small in thickness, easy in maintenance and/or replacement and small in air pressure loss. The heat exchanger includes a first heat exchanger (2) and a second heat exchanger (3). A fitting dented portion (6) is provided at one of a bottom surface of the first heat exchanger (2) and an upper surface of the second heat exchanger (3), and a fitting protruded portion (5) is provided at the other thereof, and wherein the fitting protruded portion (5) is fitted in the fitting dented portion (6), whereby the first heat exchanger (2) is integrally conected to the upper surface of the second heat exchanger (3).
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: April 5, 2005
    Assignee: Showa Denko K.K.
    Inventor: Hirofumi Horiuchi
  • Publication number: 20040159121
    Abstract: The evaporator according to the present invention is equipped with a core (1) including an upper side and lower side heat exchanging tube groups P1 and P2 arranged front and rear and an upper side and lower side header members (10) and (50) disposed at the upper and lower end of the core (1). The inside of the upper header member is divided front and rear to form an inlet-side tank (11) and an outlet-side tank (12). On end of each tube (6) constituting the upstream-side tube group P1 is connected to the inlet-side tank (11), while the other end is connected to the lower header member (50). On end of each tube (7) constituting the downstream-side tube group P2 is connected to the outlet-side tank (12), while the other end is connected to the lower header into the inlet-side tank (11) is introduced into the outlet-side tank (12) by passing through the upstream-side tube group P1, the lower header member (50) and the downstream-side tube group P2.
    Type: Application
    Filed: December 18, 2003
    Publication date: August 19, 2004
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Publication number: 20040154331
    Abstract: This duplex-type heat exchanger is adapted to a vapor compression type refrigeration cycle in which a condensed refrigerant is decompressed and then evaporated. This duplex-type heat exchanger is integrally equipped with a subcooler S in which the condensed refrigerant exchanges heat with the ambient air A to be subcooled and an evaporator E in which the decompressed refrigerant exchanges heat with the ambient air A to be evaporated. Heat exchange is performed between the refrigerant passing through the subcooler S and the refrigerant passing through the evaporator E, to thereby cool the refrigerant in the subcooler S and heat the refrigerant in the evaporator E. Accordingly, according to this heat exchanger, a high refrigeration effect can be obtained while avoiding the pressure rise of the refrigerant.
    Type: Application
    Filed: August 4, 2003
    Publication date: August 12, 2004
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noburo Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Publication number: 20040069446
    Abstract: An integrated heat exchanger is constituted by different kinds of heat exchangers such as a radiator for use in engine-cooling systems snd a condenser for use in air-conditioning systems which is low in manufacturing cost, small in thickness, easy in maintenance and/or replacement and small in air pressure loss. The heat exchanger includes a first heat exchanger (2) and a second heat exchanger (3). A fitting dented portion (6) is provided at one of a bottom surface of the first heat exchanger (2) and an upper surface of the second heat exchanger (3), and a fitting protruded portion (5) is provided at the other thereof, and wherein the fitting protruded portion (5) is fitted in the fitting dented portion (6), whereby the first heat exchanger (2) is integrally conected to the upper surface of the second heat exchanger (3).
    Type: Application
    Filed: April 29, 2003
    Publication date: April 15, 2004
    Inventor: Hirofumi Horiuchi
  • Publication number: 20040050531
    Abstract: The invention relates to heat exchangers for use in motor vehicles or for industrial use, for example, to heat exchangers for use as evaporators, condensers, oil coolers, intercoolers, heater cores, etc. The invention provides a heat exchanger comprising pairs of plates with each plate of the pair having formed on one side thereof a peripheral ridge, central ridge and channel dividing U-shaped ridges which are formed by forging or cutting. Each pair of plates are fitted together and joined, with channel recesses thereof opposed to each other to form a flat tube and a plurality of U-shaped divided fluid passageways in a U-shaped fluid channel inside the tube. Each pair of adjacent flat tubes are joined by spectacle-shaped header members interposed between the upper ends of the tubes and each comprising a front and a rear fluid passing tube portion and a connecting portion therebetween to provide a front and a rear header in communication with the upper ends of the flat tubes.
    Type: Application
    Filed: August 19, 2003
    Publication date: March 18, 2004
    Inventors: Hirofumi Horiuchi, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe
  • Publication number: 20040031598
    Abstract: In a heat exchanger comprising a hollow header (2) and a plurality of heat exchanging tubes (1) which are in fluid communication with the header (1), the cross-sectional shape of the header (2) is formed into an angular cross-sectional shape including a rectangular cross-sectional shape and a square cross-sectional shape. Furthermore, the inner space of the header (2) is divided into a plurality of collecting chambers (13) by header-partitioning walls (12) provided in the header (2), and that the inner surface (14) of the tube-non-connecting-side wall in the collecting chamber (13) is formed into a curved surface. As a result, the inner volume of the header (2) can be reduced greatly as compared with that of the conventional header while securing sufficient pressure resistance and lightweight. Furthermore, the heat exchanger can be further miniaturized and the amount of the refrigerant to be used can be reduced.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 19, 2004
    Inventors: Hiroyasu Shimanuki, Ryoichi Hoshino, Noboru Ogasawara, Takashi Tamura, Takashi Terada, Futoshi Watanabe, Hirofumi Horiuchi
  • Patent number: 6536517
    Abstract: An evaporator comprises a pair of upper and lower horizontal header tanks, a group of heat exchange tubes arranged laterally of the evaporator in front and rear two rows and each connected to the upper header tank and the lower header tank respectively, and a vertical partition wall provided inside the upper header tank and extending laterally of the evaporator so as to form sectioned header chambers for causing a refrigerant to flow through each pair of front and rear adjacent heat exchange tubes in directions opposite to each other. An inlet is provided for a liquid-vapor mixture refrigerant in a sectioned rear header chamber, and an outlet is provided for vaporized refrigerant in a sectioned front header chamber. The evaporator is 3 to 30% in channel opening ratio.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: March 25, 2003
    Assignee: Showa Denko K.K.
    Inventors: Ryoichi Hoshino, Noboru Ogasawara, Hirofumi Horiuchi, Hiroyasu Shimanuki
  • Publication number: 20020020521
    Abstract: An evaporator comprises a pair of upper and lower horizontal header tanks, a group of heat exchange tubes arranged laterally of the evaporator in front and rear two rows and each connected to the upper header tank and the lower header tank respectively, and a vertical partition wall provided inside the upper header tank and extending laterally of the evaporator so as to form sectioned header chambers for causing a refrigerant to flow through each pair of front and rear adjacent heat exchange tubes in directions opposite to each other. An inlet is provided for a liquid-vapor mixture refrigerant in a sectioned rear header chamber, and an outlet is provided for vaporized refrigerant in a sectioned front header chamber. The evaporator is 3 to 30% in channel opening ratio.
    Type: Application
    Filed: June 22, 2001
    Publication date: February 21, 2002
    Inventors: Ryoichi Hoshino, Noboru Ogasawara, Hirofumi Horiuchi, Hiroyasu Shimanuki