Patents by Inventor Eiichi Torigoe

Eiichi Torigoe 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: 20040251244
    Abstract: A heat exchanger for heating comprises a plurality of heat transfer plate members (34) arranged in parallel with each other at predetermined intervals; and connecting portions (35, 36) for integrally connecting the plurality of heat transfer plate members (34) to each other, wherein air passages (37) are formed between the plurality of heat transfer plate members (34), inner fluid passages (31) are formed in the heat transfer plate members (34), fluid, for heating air which passes in the air passages (37), flows in the inner fluid passages (31), and an electric heat generating film (40), for heating the air which passes in the air passages (37), is formed on surfaces of the plurality of heat transfer plate members (34).
    Type: Application
    Filed: June 7, 2004
    Publication date: December 16, 2004
    Inventor: Eiichi Torigoe
  • Publication number: 20040252986
    Abstract: An electrical heater includes plural heating body plates arranged in parallel with each other to define an air passage between adjacent two thereof, a positive electrode member joined to one end side of each heating body plate, and a negative electrode member joined to the other end side of each heating body plate. In the electrical heater, the heating body plates are arranged to directly heat air passing through the air passage when electrical power is supplied to the heating body plates through the electrode members. Accordingly, the electrical heater can effectively heat air with a simple structure.
    Type: Application
    Filed: June 8, 2004
    Publication date: December 16, 2004
    Inventors: Hitoshi Ito, Eiichi Torigoe, Mitsugu Nakamura
  • Publication number: 20040237576
    Abstract: A radiator for a vapor-compression refrigerant cycle and a condenser for a Rankine cycle are integrated to construct a heat exchanger. The heat exchanger includes a core portion for performing a heat exchange, and is disposed to have a first function portion used as the radiator and a second function portion used as the condenser. A function ratio changing ratio includes a displacement member such as a plunger disposed in a header tank of the heat exchanger, and changes a ratio between the first function portion and the second function portion. For example, the displacement member partitions an inner space of the header tank into two space parts when both the vapor-compression refrigerant cycle and the Rankine cycle are operated, and does not partition the inner space when only one of the vapor-compression refrigerant cycle and the Rankine cycle is operated.
    Type: Application
    Filed: April 22, 2004
    Publication date: December 2, 2004
    Inventors: Minoru Sasaki, Atsushi Inaba, Takashi Yamanaka, Eiichi Torigoe
  • Publication number: 20040206484
    Abstract: A plurality of angle portions 2c of the fins on an upstream side and those on a downstream side of an air flow are provided so as to be substantially symmetrical with each other. Due to this, bending forces are continuously exerted on a thin plate-like fin material in a direction where the bending deformation of the fin material is cancelled, during the fin forming process. Accordingly, when the angle portions 2c are formed it can be prevented in advance that the fin material 11 is deformed in a state where the repeated deformations of the fin material 11 are accumulated in the same direction.
    Type: Application
    Filed: March 17, 2004
    Publication date: October 21, 2004
    Inventors: Masahiro Shimoya, Noriyuki Kasuya, Eiichi Torigoe, Tatsuo Ozaki
  • Publication number: 20040177949
    Abstract: Fins such as corrugated fins or plate fins are formed with meandering projections. A fluid such as air strikes bent parts of the meandering projections or grooves at the back sides while flowing along the fins and becomes turbulent and therefore flows while meandering so as to be directed toward the surfaces of tubes, so flows not only contacting the front and back surfaces of the fins without leaving any dead space, but also striking the surfaces of the tubes. Due to this, no boundary layers are formed at the surfaces of the fins or tubes, so heat conduction is promoted and therefore the heat exchange efficiency between a first fluid such as a refrigerant flowing through the insides of the tubes and a second fluid such as air flowing outside is remarkably improved.
    Type: Application
    Filed: August 26, 2003
    Publication date: September 16, 2004
    Inventors: Masahiro Shimoya, Eiichi Torigoe
  • Publication number: 20040079521
    Abstract: In a resinous heat exchanger, a core portion includes a plurality of heat exchanging plate portions forming inside fluid passages therein and holding portions. The heat exchanging plate portions are layered with predetermined spaces between them so that outside fluid passages are formed between the adjacent heat exchanging plate portions. The heat exchanging plate portions are held by holding portions. The heat exchanging plate portions and the holding portions are integrally formed by extrusion of a resin material. Thus, the heat exchanger is light in weight and is capable of improving productivity.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 29, 2004
    Inventors: Eiichi Torigoe, Masahiro Shimoya
  • Publication number: 20040016535
    Abstract: In a heat exchanger for cooling air, tubes are disposed vertically and header tanks are connected to the ends of the tubes. The lower side header tank is formed with drains, which are depressions, at positions between the tubes so that condensed water, which accumulates on the lower side header tank, drains away through the drains. Each of the drains has substantially a V-shaped cross-section to facilitate drainage of the water.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 29, 2004
    Inventors: Hiroyasu Shimanuki, Eiichi Torigoe, Masamichi Makihara
  • Patent number: 6449979
    Abstract: An evaporator has plural tubes arranged in parallel with each other in a width direction perpendicular to an air flowing direction. The tubes are further arranged in two rows in the air flowing direction, and tank portions extending in the width direction are also arranged in the two rows in the air flowing direction to correspond to the tubes. A refrigerant inlet and a refrigerant outlet are provided in the tank portions, respectively, at one side end in the width direction, so that refrigerant flows through all one-row tubes after passing through the other-row tubes. In the evaporator, throttle holes are provided in a distribution portion of the tank portions, for distributing refrigerant, so that a refrigerant distribution within the tubes can be arbitrarily set. Thus, air temperature blown out from the evaporator can be made uniform.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: September 17, 2002
    Assignee: Denso Corporation
    Inventors: Toshiya Nagasawa, Eiichi Torigoe, Masamichi Makihara
  • Publication number: 20020078566
    Abstract: A manufacturing method for an evaporator made of aluminum alloy. First, a three-layer aluminum alloy plate having a core made of Al—Mn alloy, a sacrifice anode layer made of aluminum alloy which is electro-chemically base with respect to the core and clad on one side of the core, and a brazing layer made of Al—Si alloy and clad on the other side of the core is uniformly rolled to be work-hardened. Next, the thin work-hardened aluminum alloy plate is bent to form a tube so that the sacrifice anode layer is disposed outside the tube to face air and the brazing layer is disposed inside the tube to face refrigerant. Then, plural tubes and outer fins are alternately laminated and are integrally brazed to tanks to form the evaporator. As a result, a thickness of the tube is reduced without deteriorating corrosion resistance of the tube, thereby decreasing a weight and a size of the evaporator.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 27, 2002
    Inventors: Eiichi Torigoe, Koji Hirao, Masamichi Makihara, Toshiya Nagasawa
  • Patent number: 6339937
    Abstract: In a refrigerant evaporator, plural tubes made of aluminum are arranged in a laminating direction perpendicular to an air flowing direction, and plural corrugated fins made of aluminum are disposed between adjacent tubes. In the evaporator, when a tube plate thickness TT of the tubes is set in a range of 0.10 mm-0.35 mm and a tube height TH of each tube in the laminating direction is set in a range of 1.5 mm-3.0 mm, pressure loss of refrigerant in a refrigerant passage becomes smaller, and a heat-conductive area of air becomes larger. Further, when a fin height FH of the corrugated fins is set in a range of 4.0-7.5 mm, fin effect of the corrugated fins is improved. As a result, heat-conductive performance of the evaporator is improved.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: January 22, 2002
    Assignee: Denso Corporation
    Inventors: Masamichi Makihara, Isao Kuroyanagi, Toshiya Nagasawa, Eiichi Torigoe
  • Publication number: 20020002837
    Abstract: In a vehicle air conditioning system, a cold accumulator is disposed between a downstream air side of a cooling heat exchanger and an upstream air side of an air mixing door, to be cooled by cold air having passed through the cooling heat exchanger. Therefore, the cold accumulator can be readily cooled by the cold air from the cooling heat exchanger, while having a simple structure. Further, the cold accumulator is disposed at the upstream air side of the air mixing door, the cold accumulator can be effectively cooled without being affected by a rotation position of the air mixing door.
    Type: Application
    Filed: May 25, 2001
    Publication date: January 10, 2002
    Inventors: Yuichi Shirota, Koji Takahashi, Koichi Ban, Yasushi Yamanaka, Sadayuki Kamiya, Eiichi Torigoe
  • Patent number: 6063510
    Abstract: The present invention relates to an Al alloy brazing sheet for use in vacuum brazing, which is applied to manufacture a heat exchanger having a tank portion and a refrigerant passage respectively formed by bonding press-formed brazing sheets together by means of vacuum brazing. The brazing sheet includes an Al alloy core material having a composition consisting of 0.5 to 2.0 mass % (hereinafter abbreviated simply as %) of Mn, 0.1 to 1.0% of Cu, 0.05 to 0.5% of Mg and 0 to 0.3%. of Ti, with the remainder being Al and inevitable impurities. An Al--Si--Mg alloy brazing filler metal or an alloy brazing filler metal prepared by further adding 0.05 to 1.0% of Sn to the Al--Si--Mg alloy brazing filler metal, is clad on both surfaces of the sheet to a thickness of 5 to 20% the total sheet thickness. An intermediate layer consisting of an Al alloy having a composition consisting of 0.5 to 2.0% of Mn, 0.05 to 0.5% of Mg and 0 to 0.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: May 16, 2000
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Yoshihito Inabayashi, Hiroshi Kano, Noboru Soga, Haruhiko Miyachi, Eiichi Torigoe
  • Patent number: 5918664
    Abstract: In a refrigerant evaporator constructed by laminating a plurality of tubes in which an inlet side refrigerant passage and an outlet side refrigerant passage are formed, a connecting member which sets a position of the adjacent tubes is provided. The connecting member is formed at inlet tank portions of the tube through which the refrigerant having a lower dryness is small flows. Thus, the adjacent tubes are connected firmly, and pressure loss of the refrigerant is decreased at the same time.
    Type: Grant
    Filed: February 16, 1998
    Date of Patent: July 6, 1999
    Assignee: Denso Corporation
    Inventor: Eiichi Torigoe
  • Patent number: 5826648
    Abstract: A laminated type heat exchanger according to the present invention includes a plurality of metal plates laminated with each other to form a fluid passage and an end plate disposed at an end of the laminated metal plates. The end plate has two protrusions for forming a fluid inlet passage and a fluid outlet passage for the fluid passage, respectively, and a joining portion formed between the two protrusions, for being brazed to the most-sided metal plate. A through hole is formed at the center of the joining portion. Even if there is a defective brazed portion in the joining portion, fluid which flows from the fluid inlet directly into the outlet passages through the defective brazed portion always leaks to the outside from the through hole. As a result, an internal leakage between the fluid inlet and outlet passages can be detected securely.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: October 27, 1998
    Assignee: Denso Corporation
    Inventors: Masahiro Shimoya, Eiichi Torigoe
  • Patent number: 5778974
    Abstract: A laminated type heat exchanger includes a plurality of tube elements laminated so as to form a first tank portion, a second tank portion, and a third tank portion in a laminated direction. Each tube element includes a first flange, a second flange, and a third flange for the first tank portion, the second tank portion, and the third tank portion, which are brazed with a first flange, a second flange, and a third flange of an adjacent tube element, respectively. The first flange is folded inside the first tank portion, the second flange is folded outside the second tank portion, and the third flange is folded outside the third tank portion. In this way, it is possible to reduce the flow resistance of the refrigerant flowing in the tank portions.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: July 14, 1998
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiharu Kazikawa, Toshio Ohara, Eiichi Torigoe, Yasukazu Aikawa
  • Patent number: 5735343
    Abstract: A core plates forming a core body includes an upstream refrigerant passage for communicating an upper and a lower tank disposed at a downstream side and a downstream refrigerant passage for communicating an upper and a lower tanks disposed at an upstream side with respect to the air flow direction. Ribs are formed on an inner surface of the upstream refrigerant passage to agitate the refrigerant, and inner fins are provided on the inner surface of the downstream refrigerant passage which receives a refrigerant after passing through each the upstream refrigerant passage of each the core body.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: April 7, 1998
    Assignee: Denso Corporation
    Inventors: Yoshiharu Kajikawa, Masahiro Shimoya, Eiichi Torigoe
  • Patent number: 5701760
    Abstract: According to the present invention, plural downstream side evaporation passages in a downstream side heat exchanging unit are divided into two groups substantially at the middle of the width by a separator, plural upstream side evaporation passages in an upstream side heat exchanging unit are divided into two groups substantially at the middle of the width by a separator, and a downstream side lower tank and an upstream side upper tank are communicated by a communication passage so that inefficient heat exchanging areas of the downstream side heat exchanging unit and the upstream side heat exchanging unit disposed one after the other with respect to the flowing direction of air may not overlap with each other.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: December 30, 1997
    Assignee: Denso Corporation
    Inventors: Eiichi Torigoe, Masahiro Shimoya
  • Patent number: 5680773
    Abstract: A refrigerant evaporator has, at each of a downstream side and an upstream side with respect to a flow direction of air, a pair of upper and lower tanks and a tube connecting the tanks. A refrigerant flows from the pair of tanks and the tube at the downstream side to the pair of tanks and the tube at the upstream side to cool the air flowing outside the tubes. The tanks at the upstream side are formed in an elliptic shape in cross section and the tanks at the downstream side are formed in a circular shape in cross section. The shorter diameter of the elliptic shape lies in a longitudinal direction of the tubes and is the same as the diameter of the circular shape.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: October 28, 1997
    Assignee: Denso Corporation
    Inventors: Yasukazu Aikawa, Yoshiharu Kajikawa, Eiichi Torigoe
  • Patent number: 5363910
    Abstract: An inner half cylinder and an outer half cylinder are brazed to each other to form a cylindrical header tank. Both ends of tubes are connected to the inner half cylinder. An opening of the outer half cylinder is communicated with an opening of a joint pipe. A tongue portion which is provided on the periphery of the opening of the outer half cylinder is inserted and curled in the opening of the joint pipe so as to fix the joint pipe on the outer half cylinder firmly.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: November 15, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Norimasa Baba, Ken Yamamoto, Michiyasu Yamamoto, Ryouichi Sanada, Eiichi Torigoe, Mitsugu Nakamura
  • Patent number: 5307870
    Abstract: A header has a tank member having a transverse cross-section of a circular arc shape, and a tube attachment member having a transverse cross-section flatter than the above-mentioned circular arc shape as a whole, are opposed and joined. The tube attachment member has identical curvature portions constituted with an inner diameter R2 which is the same as the inner diameter R2 of the tank member at both sides to be joined to the tank member, and has a large curvature portion constituted with an inner diameter R1 which is larger than the inner diameter R2 of the tank member at an intermediate portion interposed between the identical curvature portions. A connecting position P between the identical curvature portion and the large curvature portion is inside from both edges of a tube.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: May 3, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Sadayuki Kamiya, Satoshi Matsuura, Mitsugu Nakamura, Norimasa Baba, Eiichi Torigoe, Teruhiko Kameoka, Ken Yamamoto, Michiyasu Yamamoto, Ryouichi Sanada