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公开(公告)号：US20230272942A1
公开(公告)日：2023-08-31
申请号：US18166445
申请日：2023-02-08
申请人： NORITZ CORPORATION
发明人： Norihide WADA
CPC分类号： F24H1/107 , F24H9/0026
摘要： A heat exchanger and a water heater are provided. The heat exchanger is provided with an auxiliary member including a trunk pipe joint portion joined to a trunk pipe and an extension portion extending from the trunk pipe joint portion toward a plurality of fins. The plurality of fins is provided apart from a sidewall portion so as not to directly contact the sidewall portion of a case, the extension portion of the auxiliary member includes an entry portion that enters between the plurality of fins and the sidewall portion, and a first abutment portion which is provided in the entry portion and abuts outer end portions of the plurality of fins, the first abutment portion is separated from the sidewall portion, and a space portion in which inflow of the heating gas is suppressed is formed between the first abutment portion and the sidewall portion.
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公开(公告)号：US20230184460A1
公开(公告)日：2023-06-15
申请号：US18072598
申请日：2022-11-30
申请人： NORITZ CORPORATION
发明人： Takeshi OHIGASHI , Shigeo SUGIE , Norihide WADA , Kengo HORIUCHI , Naoya SHIOTSU
CPC分类号： F24H1/124 , F28D1/0477 , F28F1/325
摘要： 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.
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公开(公告)号：US20210156629A1
公开(公告)日：2021-05-27
申请号：US17072043
申请日：2020-10-16
申请人： NORITZ CORPORATION
发明人： Norihide WADA , Masahiro IGUCHI
摘要： A heat exchanger includes a case into which heating gas is supplied, a heat transfer pipe accommodated in the case, and first and second header sections, each of which has a chamber formed using a protruding part provided in the sidewall section, and to which the heat transfer pipe is connected such that a fluid to be heated enters and exit the chamber. The sidewall section has a configuration in which an inner plate and an outer plate overlap each other, the protruding part of the first header section is provided on the inner plate and protrudes toward an inside of the case, and the protruding part of the second header section is provided on the outer plate and protrudes toward an outside of the case.
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公开(公告)号：US20160025373A1
公开(公告)日：2016-01-28
申请号：US14750983
申请日：2015-06-25
申请人： NORITZ CORPORATION
发明人： Yu FUJIMOTO , Norihide WADA
CPC分类号： F24H1/145 , F22B15/00 , F23D14/045 , F23D14/586 , F23L9/00 , F24H2210/00
摘要： A water heater includes a burner of a premixed type, a heat exchanger, and a fan suctioning combustion gas and exhausting combustion gas to the outside. The burner includes a burner case partitioned into a combustion chamber and a gas introduction chamber by a partition plate and a plurality of combustion tubes arranged in the combustion chamber. An air supply opening for supplying air into the gas introduction chamber is provided in the burner case. The partition plate has a plurality of opening portions communicating with the inside of the combustion tubes and a plurality of through holes communicating with the outside of the combustion tubes within the combustion chamber. The air supply opening is constructed to have an opening area smaller than the total sum of the total of opening areas of the plurality of opening portions and the total of opening areas of the plurality of through holes.
摘要翻译： 热水器包括预混式燃烧器，热交换器和吸入燃烧气体的风扇并将燃烧气体排出到外部。 燃烧器包括分隔成燃烧室的燃烧器壳体和通过分隔板和布置在燃烧室中的多个燃烧管的气体引入室。 在燃烧器壳体内设置有用于向气体导入室供给空气的供气口。 隔板具有与燃烧管的内部连通的多个开口部和与燃烧室内的燃烧管的外部连通的多个通孔。 供气口构造成具有小于多个开口部的开口面积的总和和多个通孔的开口面积的总和的开口面积。
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公开(公告)号：US20160010891A1
公开(公告)日：2016-01-14
申请号：US14728068
申请日：2015-06-02
申请人： NORITZ CORPORATION
发明人： Norihide WADA
CPC分类号： F24H8/006 , F24H9/0026 , F28D7/024 , Y02B30/106
摘要： A drainage water discharge pipe is connected to a secondary heat exchanger for discharging drainage water to the outside of the secondary heat exchanger. An air passage pipe is connected to an exhaust box. A three-way pipe joint allows merging of a flow path on a side of the drainage water discharge pipe and a flow path on a side of the air passage pipe, and allows connection of the merged flow path to a drainage water tank connection pipe. In the three-way pipe joint, the flow path on the side of the air passage pipe is greater in diameter than the flow path on the side of the drainage water discharge pipe, and the flow path on the side of the drainage water tank connection pipe is decreased in diameter after merging of the drainage water discharge pipe and the air passage pipe.
摘要翻译： 排水排水管连接到二次热交换器，用于将排水排放到二次热交换器的外部。 空气通道管连接到排气箱。 三通管接头允许排水排水管一侧的流路与通气管一侧的流路并流，并将合流流路连接到排水水箱连接管。 在三通管接头中，空气通道管侧的流路直径大于排水排水管侧的流路，排水槽连接侧的流路 排水排水管和通风管合并后管道直径减小。
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公开(公告)号：US20150176861A1
公开(公告)日：2015-06-25
申请号：US14560085
申请日：2014-12-04
申请人： NORITZ CORPORATION
CPC分类号： F24H8/006 , F23J1/00 , F23J1/08 , F23L17/005 , F24H1/43 , F24H9/0026 , Y02B30/106
摘要： A water heater of a latent heat recovery type includes: a combustion apparatus including a burner having a plurality of burner port portions and generating combustion gas from openings at ends of the plurality of burner port portions; a heat exchanger heating water that flows through inside by heat exchange with combustion gas generated in the combustion apparatus; and a fan suctioning the combustion gas that has passed through the heat exchanger and emitting combustion gas to outside of the water heater. The fan includes a fan case, an impeller housed within the fan case, and a drive source connected to the impeller. At least a part of an upper surface of a bottom wall of the fan case is inclined with respect to a reference plane including the openings of the plurality of burner port portions.
摘要翻译： 潜热回收型热水器包括：燃烧装置，包括具有多个燃烧口部分的燃烧器，并从多个燃烧口部分的端部处的开口产生燃烧气体; 热交换器通过与在燃烧装置中产生的燃烧气体进行热交换而加热流过内部的水; 以及抽吸已经通过热交换器并将燃烧气体排放到热水器外部的燃烧气体的风扇。 风扇包括风扇壳体，容纳在风扇壳体内的叶轮和连接到叶轮的驱动源。 风扇壳体的底壁的上表面的至少一部分相对于包括多个燃烧器端口部分的开口的参考平面倾斜。
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公开(公告)号：US20240167725A1
公开(公告)日：2024-05-23
申请号：US18502066
申请日：2023-11-05
申请人： NORITZ CORPORATION
CPC分类号： F24H1/16 , F24H9/146 , F28F9/182 , F28F2275/04
摘要： A heat exchanger includes a header part that is arranged on an outer surface side of a sidewall part of a case into which a combustion gas is supplied, and has hole parts through which end parts of heat transfer tubes are inserted and forms a chamber communicating between insides of the heat transfer tubes. The heat exchanger further includes a burring part in a tubular shape that protrudes from a circumferential edge part of each hole part of the header part toward the sidewall part side and is externally fitted to the end part of each heat transfer tube, and an extension part that partially extends from a part of a tip circumferential edge part of the burring part toward the sidewall part side and has a tip part abutting against the sidewall part.
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公开(公告)号：US20210325083A1
公开(公告)日：2021-10-21
申请号：US17275173
申请日：2019-08-22
申请人： NORITZ CORPORATION
发明人： Masaki KONDO , Norihide WADA
摘要： A hot water device includes a heat exchanger and an apparatus to which the heat exchanger is to be connected. First and second cases for the heat exchanger and the apparatus to which the heat exchanger is to be connected include first and second flange portions laid over each other and welded together. The first and second flange portions are each demarcated into a corner flange portion corresponding to one of first and second corner portions, and into a non-corner flange portion other than the corner flange portion. The non-corner flange portions protrude more to the outside of the first and second cases than the corner flange portions.
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公开(公告)号：US20200208923A1
公开(公告)日：2020-07-02
申请号：US16689211
申请日：2019-11-20
申请人： NORITZ CORPORATION
发明人： Norihide WADA , Takeshi OHIGASHI
摘要： A heat exchanger includes a plurality of heat transfer tubes extending in a first direction and aligned in a second direction intersecting with the first direction, and a plurality of fins disposed in the first direction. The fins each include a plurality of fin main bodies aligned in the second direction, and a bridging portion connecting two adjacent ones of the fin main bodies. At least one of the fin main bodies is provided with a through hole next to the bridging portion in the second direction.
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公开(公告)号：US20230026734A1
公开(公告)日：2023-01-26
申请号：US17861256
申请日：2022-07-11
申请人： NORITZ CORPORATION
发明人： Naoya SHIOTSU , Norihide WADA
摘要： 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.
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