Patents by Inventor Tadashi Sao

Tadashi Sao 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: 9273896
    Abstract: In an outdoor unit, an electric component unit includes an inlet part which communicates with an outlet side of an air blower and through which air on the outlet side flows into the electric component unit, and an outlet part which communicates with an inlet side of the air blower and through which air flows out from the electric component unit.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: March 1, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadashi Sao, Mikio Kagawa, Shigeki Kamitani, Fumiaki Koike, Yusuke Nakagawa, Tomohisa Takeuchi, Katsutoshi Sakurai
  • Publication number: 20140338384
    Abstract: An outdoor unit of an air conditioning device in which a heat exchanger is arranged in a bottom plate in a substantially rectangular parallelepiped shape casing including a top plate, side plates, and the bottom plate is provided. The heat exchanger is mounted on a plurality of expanded portions formed in the bottom plate. A first drainage hole through which a drainage fluid from the heat exchanger is discharged to an exterior is formed in each of the expanded portions, and a second drainage hole smaller than the first drainage hole is formed in the bottom plate under the heat exchanger excluding the expanded portions.
    Type: Application
    Filed: November 9, 2012
    Publication date: November 20, 2014
    Inventors: Fumiaki Koike, Mikio Kagawa, Tadashi Sao, Shigeki Kamitani
  • Publication number: 20140326019
    Abstract: A double-pipe heat exchanger capable of achieving a compact configuration and suppressing a liquid refrigerant contained in a gas-liquid two-phase refrigerant from flowing out from an inner pipe so as to prevent generation of a liquid-back phenomenon is provided. A double-pipe heat exchanger includes an outer pipe through which a high pressure liquid refrigerant flows, and an inner pipe having an inlet side end into which a low pressure gas-liquid two-phase refrigerant obtained by reducing pressure of the high pressure liquid refrigerant flows, and an outlet side end connected to a suction side part of a compressor. The double-pipe heat exchanger includes a plurality of vertical pipes arranged in the up and down direction, and a curve pipe connecting ends of the plurality of vertical pipe), the outlet side end of the inner pipe is provided in an upper end of one vertical pipe, and the inlet side end of the inner pipe is provided in an upper end of the other vertical pipe.
    Type: Application
    Filed: November 6, 2012
    Publication date: November 6, 2014
    Inventors: Mikio Kagawa, Tadashi Sao, Yuusuke Nakagawa, Katsutoshi Sakurai
  • Publication number: 20140298844
    Abstract: An outdoor unit includes a casing including four side surfaces. The outdoor unit includes an outdoor heat exchanger disposed in the casing, including four heat exchange surfaces corresponding to the side surfaces of the casing, and including an opening disposed on side surfaces of the outdoor heat exchanger. A heater is in a shape of a rectangular frame along a lower end portion of the outdoor heat exchanger, and avoids freeze of drain water on the outdoor heat exchanger. The heater includes hinges allowing the heater to fold longitudinally.
    Type: Application
    Filed: December 12, 2012
    Publication date: October 9, 2014
    Inventors: Bin Luo, Tadashi Sao, Mikio Kagawa
  • Publication number: 20140124175
    Abstract: An outdoor unit includes a casing having a side surface formed with an inlet port; an outdoor fan arranged above the inlet port in the casing and configured to upwardly blow air; and an outdoor heat exchanger arranged so as to face the inlet port. The outdoor fan includes a fan and a bell mouth provided so as to surround the outer periphery of the fan, and an electric component unit positioned at the periphery of the bell mouth is arranged in the casing.
    Type: Application
    Filed: May 17, 2012
    Publication date: May 8, 2014
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadashi Sao, Mikio Kagawa, Shigeki Kamitani, Fumiaki Koike, Yusuke Nakagawa, Katsutoshi Sakurai, Tomohisa Takeuchi, Kazuto Yamagata
  • Publication number: 20140047857
    Abstract: In an outdoor unit, an electric component unit includes an inlet part which communicates with an outlet side of an air blower and through which air on the outlet side flows into the electric component unit, and an outlet part which communicates with an inlet side of the air blower and through which air flows out from the electric component unit.
    Type: Application
    Filed: May 17, 2012
    Publication date: February 20, 2014
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadashi Sao, Mikio Kagawa, Shigeki Kamitani, Fumiaki Koike, Yusuke Nakagawa, Tomohisa Takeuchi, Katsutoshi Sakurai
  • Patent number: 8297071
    Abstract: A shut-off valve mounting structure is for holding shut-off valves in place in an outdoor unit of an air conditioner, and includes bases, and a fixing portion. The shut-off valves are connected to an indoor unit of the air conditioner via refrigerant communication pipes. The bases extend upwards from a bottom frame of the outdoor unit (2). The fixing portion is continuous with the bases, and holds the shut-off valves in place such that a space exists below the shut-off valves.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 30, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Kazuhiro Shioyama, Satoru Ohkura, Tadashi Sao, Ikuji Ishii, Keiji Ishida
  • Patent number: 7963121
    Abstract: An outdoor unit of an air conditioner is provided in which a wind whistling sound and a vibration noise due to airflow are reduced. The outdoor unit includes an outdoor heat exchanger, a fan, a motor for driving the fan, and a motor support table for supporting the motor. The fan moves air on the outdoor heat exchanger to promote heat exchange between refrigerant and air. The motor support table (63) is provided with a rectifying member, and the rectifying member deflects air flowing toward the motor support table in a predetermined direction.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: June 21, 2011
    Assignee: Daikin Industries, Ltd.
    Inventors: Keiji Ishida, Tadashi Sao, Ikuji Ishii
  • Patent number: 7752861
    Abstract: The present invention includes foundation legs of an outdoor unit that are made of a relatively thin plate material, and can reduce cost. This outdoor unit includes a compressor, an outdoor refrigerant circuit that includes pipes and a heat exchanger, a case that houses the refrigerant circuit, and a plurality of supports provided so that they protrude downward from the bottom part of the case. Furthermore, foundation legs are provided at the lower ends of the plurality of supports for fixing such, so that they extend towards the inner side of the case.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: July 13, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroki Ishihara, Hiromune Matsuoka, Toshiaki Mukaidani, Tadashi Sao
  • Publication number: 20090277205
    Abstract: An outdoor unit is provided that is capable of reducing pressure loss due to the presence of a fan guard and improving the performance of an air conditioner. The outdoor unit includes an outdoor fan, an air discharge port, and a fan guard. The fan guard covers the air discharge port, and has a spaced away portion that is at least 100 mm away from the outdoor fan. In addition, the spaced away portion has a first opening whose minimum width is at least 15 mm.
    Type: Application
    Filed: October 27, 2006
    Publication date: November 12, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiji Matsuda, Tadashi Sao, Ikuji Ishii
  • Publication number: 20090260391
    Abstract: A shut-off valve mounting structure is for holding shut-off valves in place in an outdoor unit of an air conditioner, and includes bases, and a fixing portion. The shut-off valves are connected to an indoor unit of the air conditioner via refrigerant communication pipes. The bases extend upwards from a bottom frame of the outdoor unit (2). The fixing portion is continuous with the bases, and holds the shut-off valves in place such that a space exists below the shut-off valves.
    Type: Application
    Filed: October 27, 2006
    Publication date: October 22, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuhiro Shioyama, Satoru Ohkura, Tadashi Sao, Ikuji Ishii, Keiji Ishida
  • Publication number: 20090114376
    Abstract: An outdoor unit of an air conditioner is provided in which a wind whistling sound and a vibration noise due to airflow are reduced. The outdoor unit includes an outdoor heat exchanger, a fan, a motor for driving the fan, and a motor support table for supporting the motor. The fan moves air on the outdoor heat exchanger to promote heat exchange between refrigerant and air. The motor support table (63) is provided with a rectifying member, and the rectifying member deflects air flowing toward the motor support table in a predetermined direction.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 7, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiji Ishida, Tadashi Sao, Ikuji Ishii
  • Patent number: 7363768
    Abstract: The present invention reduces the size of an outdoor refrigerator unit of the type that draws in air from a lateral face, exchanges heat with the air, and blows the air out of a top face while ensuring that the electrical equipment box has sufficient volume and suppressing the increase in the air flow resistance. The air conditioning system outdoor unit is of the type that draws in air from air inlets provided in the rear panel and a pair of side panels of a casing, exchanges heat with the air, and blows the air out through an air outlet provided in a top panel. The outdoor unit is provided with an axial fan and an electrical equipment box arranged inside the casing. The electrical equipment box is arranged inside the casing and has a first box part that is provided below the axial fan and a second box part that is provided below the first box part and has a larger surface area in a plan view than the first box part.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: April 29, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroshi Fuchikami, Hiroki Ishihara, Tadashi Sao, Toshiaki Mukaidani
  • Publication number: 20070113582
    Abstract: A branching pipe joint includes a substantially Y-pipe shaped branch part, a first branch nozzle part, a second branch nozzle part, and a first branch pipe. The first branch pipe has an end connected to a tip part of the first branch nozzle part during plumbing work. The first branch nozzle part and the second branch nozzle part are disposed so that a spacing between a portion of the tip part of the first branch nozzle part nearest the second branch nozzle part side and a portion of the second branch nozzle part nearest the tip part of the first branch nozzle part is less than or equal to 40 mm.
    Type: Application
    Filed: May 24, 2005
    Publication date: May 24, 2007
    Applicant: Daikin Industries, Ltd.
    Inventors: Tadashi Sao, Kazuhide Mizutani, Satoru Okura
  • Publication number: 20050150247
    Abstract: An outdoor air conditioner unit is connected to indoor units by a gaseous refrigerant communication pipe and a liquid refrigerant communication pipe. The outdoor air conditioner unit is provided with a gas-side shut-off valve and a liquid-side shut-off valve. The gas-side shut-off valve has a pipe connecting port to which the gaseous refrigerant communication pipe is connected. The liquid-side shut-off valve has a pipe connecting port to which the liquid refrigerant communication pipe is connected. In a plan view, the pipe connecting ports are offset from each other in both the depthwise direction and the widthwise direction. Thus, the outdoor air conditioner unit is configured to reduce interference between the refrigerant pipes connected to the gas-side and liquid-side shut-off valves of the outdoor unit.
    Type: Application
    Filed: June 30, 2003
    Publication date: July 14, 2005
    Applicant: Daikin Industries,Ltd.
    Inventors: Hiroki Ishihara, Hiromune Matsuoka, Toshiaki Mukaidani, Tadashi Sao
  • Publication number: 20050144975
    Abstract: The present invention reduces the size of an outdoor refrigerator unit of the type that draws in air from a lateral face, exchanges heat with the air, and blows the air out of a top face while ensuring that the electrical equipment box has sufficient volume and suppressing the increase in the air flow resistance. The air conditioning system outdoor unit is of the type that draws in air from air inlets provided in the rear panel and a pair of side panels of a casing exchanges heat with the air, and blows the air out through an air outlet provided in a top panel. The outdoor unit is provided with an axial fan and an electrical equipment box arranged inside the casing. The electrical equipment box is arranged inside the casing and has a first box part that is provided below the axial fan and a second box part that is provided below the first box part and has a larger surface area in a plan view than the first box part.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 7, 2005
    Inventors: Hiroshi Fuchikami, Hiroki Ishihara, Tadashi Sao, Toshiaki Mukaidani
  • Publication number: 20050000239
    Abstract: The present invention includes foundation legs of an outdoor unit that are made of a relatively thin plate material, and can reduce costs. This outdoor unit includes a compressor, an outdoor refrigerant circuit that includes pipes and a heat exchanger, a case that houses the refrigerant circuit, and a plurality of supports provided so that they protrude downward from the bottom part of the case. Furthermore, foundation legs are provided at the lower ends of the plurality of supports for fixing such, so that they extend towards the inner side of the case.
    Type: Application
    Filed: June 27, 2003
    Publication date: January 6, 2005
    Inventors: Hiroki Ishihara, Hiromune Matsuoka, Toshiaki Mukaidani, Tadashi Sao