Patents by Inventor Naoya Shiotsu
Naoya Shiotsu 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).
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Publication number: 20230184460Abstract: A heat exchanger includes a case, a first and second heat exchanger disposed inside the case, a partition member disposed inside the case, and a duct. The case has a first side wall and a second side wall spaced apart from and facing each other in a first direction, a third side wall and a fourth side wall spaced apart from and facing each other in a second direction orthogonal to the first direction, and a bottom wall. A gas outlet communicating with an interior of the case is formed in the first side wall. The first heat exchanger is farther from the bottom wall than the second heat exchanger in a third direction orthogonal to the first and second directions. The second heat exchanger includes meandering heat transfer tubes meandering within a plane orthogonal to the first direction and overlapping along the first direction.Type: ApplicationFiled: November 30, 2022Publication date: June 15, 2023Applicant: NORITZ CORPORATIONInventors: Takeshi OHIGASHI, Shigeo SUGIE, Norihide WADA, Kengo HORIUCHI, Naoya SHIOTSU
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Publication number: 20230026734Abstract: A heat exchanger includes: a case which has a first side wall that stands upright in a vertical height direction and to which a heating medium is supplied inside; and heat transfer tubes for heating hot water housed in the case. Two end portions of the heat transfer tubes in a longitudinal direction are joined to the first side wall via brazing portions, and the heat transfer tubes are supported by the first side wall. The heat exchanger further includes heat transfer tube support portions provided on the first side wall for supporting portions of the heat transfer tubes near the first side wall to prevent the portions of the heat transfer tubes near the first side wall from descending below a first predetermined height.Type: ApplicationFiled: July 11, 2022Publication date: January 26, 2023Applicant: NORITZ CORPORATIONInventors: Naoya SHIOTSU, Norihide WADA
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Patent number: 11454421Abstract: A heat exchanger including a gas inlet through which a combustion gas flows in and a gas outlet through which the combustion gas flows out is provided. The heat exchanger includes a housing in which the gas outlet is formed, a partition member, and a plurality of heat transfer tubes accommodated in the housing. The partition member is mounted in the housing so that there is a portion in which a flow area of the combustion gas is smaller than that of the gas inlet between the gas inlet and the gas outlet.Type: GrantFiled: November 10, 2020Date of Patent: September 27, 2022Assignee: NORITZ CORPORATIONInventor: Naoya Shiotsu
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Patent number: 11441814Abstract: A water heating device includes: a heat exchanger having a case to which heating air is supplied, and heat transfer pipes accommodated inside the case; and a straightening vane arranged on the downstream side in a heating air flow direction of the heat transfer pipes, and having a plurality of vent holes. The heat transfer pipe includes a plurality of pipe body portions that extend along a direction intersecting the heating air flow direction and approach the straightening vane. The plurality of vent holes are arranged so as to overlap the plurality of pipe body portions in the heating air flow direction.Type: GrantFiled: August 22, 2019Date of Patent: September 13, 2022Assignee: NORITZ CORPORATIONInventors: Naoya Shiotsu, Masaki Kondo
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Publication number: 20210325084Abstract: A water heating device includes: a heat exchanger having a case to which heating air is supplied, and heat transfer pipes accommodated inside the case; and a straightening vane arranged on the downstream side in a heating air flow direction of the heat transfer pipes, and having a plurality of vent holes. The heat transfer pipe includes a plurality of pipe body portions that extend along a direction intersecting the heating air flow direction and approach the straightening vane. The plurality of vent holes are arranged so as to overlap the plurality of pipe body portions in the heating air flow direction.Type: ApplicationFiled: August 22, 2019Publication date: October 21, 2021Applicant: NORITZ CORPORATIONInventors: Naoya SHIOTSU, Masaki Kondo
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Publication number: 20210190374Abstract: A heat exchanger including a gas inlet through which a combustion gas flows in and a gas outlet through which the combustion gas flows out is provided. The heat exchanger includes a housing in which the gas outlet is formed, a partition member, and a plurality of heat transfer tubes accommodated in the housing. The partition member is mounted in the housing so that there is a portion in which a flow area of the combustion gas is smaller than that of the gas inlet between the gas inlet and the gas outlet.Type: ApplicationFiled: November 10, 2020Publication date: June 24, 2021Applicant: NORITZ CORPORATIONInventor: Naoya SHIOTSU
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Patent number: 10890356Abstract: The heat exchange device (200) includes a primary heat exchanger (10), a secondary heat exchanger (20), and a connecting pipe (60). The connecting pipe connects the primary heat exchanger and the secondary heat exchanger. The primary heat exchanger (10) includes a primary heat exchange part (11), a shell plate (12) surrounding the primary heat exchange part, and a body pipe part (13) for cooling the shell plate. The body pipe part (13) is disposed closer to a burner than the primary heat exchange part (11) and is connected to the connecting pipe (60). The primary heat exchange part (11) includes a first heat transfer tube part (111) connected to the body pipe part (13), and a second heat transfer tube part (112) connected to the first heat transfer tube part and disposed on a side opposite to the body pipe part with respect to the first heat transfer tube part.Type: GrantFiled: January 4, 2019Date of Patent: January 12, 2021Assignee: NORITZ CORPORATIONInventors: Naoya Shiotsu, Takeshi Ohigashi, Masaki Kondo, Norihide Wada
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Publication number: 20190226719Abstract: The heat exchange device (200) includes a primary heat exchanger (10), a secondary heat exchanger (20), and a connecting pipe (60). The connecting pipe connects the primary heat exchanger and the secondary heat exchanger. The primary heat exchanger (10) includes a primary heat exchange part (11), a shell plate (12) surrounding the primary heat exchange part, and a body pipe part (13) for cooling the shell plate. The body pipe part (13) is disposed closer to a burner than the primary heat exchange part (11) and is connected to the connecting pipe (60). The primary heat exchange part (11) includes a first heat transfer tube part (111) connected to the body pipe part (13), and a second heat transfer tube part (112) connected to the first heat transfer tube part and disposed on a side opposite to the body pipe part with respect to the first heat transfer tube part.Type: ApplicationFiled: January 4, 2019Publication date: July 25, 2019Applicant: NORITZ CORPORATIONInventors: Naoya Shiotsu, Takeshi Ohigashi, Masaki Kondo, Norihide Wada