公开(公告)号：US20210131702A1

公开(公告)日：2021-05-06

申请号：US15733889

申请日：2019-08-14

申请人： NORITZ CORPORATION

发明人： Tsuneo Funabiki ,  Keiichi MIURA

IPC分类号： F24H9/02 ,  F23L5/02

摘要： A water heating device equipped with a housing, a fan and a chamber arranged in the interior of the housing, and screws. The housing has first and second side plates which oppose one another in a first direction and extend from the ends of a back plate along a second direction intersecting the first direction. An opening part is provided in the housing on the side opposite the back plate in the second direction. The fan has a discharge opening, a first flow passage extending along the first direction, and a first flange. The chamber has an intake opening, a second flow passage extending along the first direction, and a second flange. The first and the second flanges are secured by screws. In a planar view, the center axis of the screws is slanted such that a head portion is closer to the opening part than the tip-end portion.

公开(公告)号：US11819811B2

公开(公告)日：2023-11-21

申请号：US17348774

申请日：2021-06-16

申请人： NORITZ CORPORATION

发明人： Keiichi Miura ,  Tsuneo Funabiki ,  Tatsuya Karaki ,  Kyohei Ogawa

IPC分类号： B01F25/312 ,  B01F23/10 ,  B01F101/00 ,  F23D14/02 ,  F23D14/70 ,  F23D14/62

CPC分类号： B01F25/312 ,  B01F23/10 ,  B01F25/31242 ,  B01F25/312512 ,  B01F25/312522 ,  B01F2101/503 ,  F23D14/02 ,  F23D14/62 ,  F23D14/70 ,  F23D2203/007 ,  F23D2203/105

摘要： A premixing device includes: a gas flow passage forming member in which an x direction is used as an axial length direction, and a Venturi-shaped gas flow passage into which air can flow in from the outside is formed inside; and a blade portion positioned in the gas flow passage, extending in a y direction, and equipped with a fuel gas outlet. The blade portion includes first and second blade portions spaced apart from each other in a z direction, and an air flow path near the center through which a part of the air flows is formed between these first and second blade portions. At least one of a pair of surfaces of the first and second blade portions facing each other is equipped with an inner bulging portion that bulges in the z direction so as to squeeze a part of the air flow path near the center.

公开(公告)号：US11635203B2

公开(公告)日：2023-04-25

申请号：US17375003

申请日：2021-07-14

申请人： NORITZ CORPORATION

发明人： Kyohei Ogawa ,  Keiichi Miura ,  Tsuneo Funabiki ,  Tatsuya Karaki

IPC分类号： F23D14/02 ,  F24H1/00

摘要： A premixing flow path forming member of a premixing device includes a member whose attachment mode can be changed, and flow path resistance of a fuel gas flow path can be changed when the attachment mode of the member is changed.

公开(公告)号：US11506421B2

公开(公告)日：2022-11-22

申请号：US15733889

申请日：2019-08-14

申请人： NORITZ CORPORATION

发明人： Tsuneo Funabiki ,  Keiichi Miura

IPC分类号： F24H9/02 ,  F23L5/02 ,  F16L23/036 ,  F16L23/02 ,  F16L19/02 ,  F16L23/04 ,  F04D29/44

摘要： A water heating device equipped with a housing, a fan and a chamber arranged in the interior of the housing, and screws. The housing has first and second side plates which oppose one another in a first direction and extend from the ends of a back plate along a second direction intersecting the first direction. An opening part is provided in the housing on the side opposite the back plate in the second direction. The fan has a discharge opening, a first flow passage extending along the first direction, and a first flange. The chamber has an intake opening, a second flow passage extending along the first direction, and a second flange. The first and the second flanges are secured by screws. In a planar view, the center axis of the screws is slanted such that a head portion is closer to the opening part than the tip-end portion.