-
公开(公告)号：US10288313B2
公开(公告)日：2019-05-14
申请号：US15380273
申请日：2016-12-15
Applicant: NORITZ CORPORATION
Inventor： Naoki Se , Michihisa Nakahara , Hideyuki Fujisawa , Kenichi Sakurai , Yuta Tsuji , Keizo Kawano , Taihei Terasawa , Masahiro Kawamoto , Masaharu Imaizumi
Abstract: A gas supply manifold has a nozzle forming member having a plurality of gas injection nozzles, a cover member configured to be overlapped on the nozzle forming member, and a caulking-fastening portion configured to fasten the nozzle forming member and the cover member. The caulking-fastening portion is configured such that a convex portion provided for one of the nozzle forming member and the cover member penetrates a hole provided for the other member, and a tip end portion of the convex portion has an engagement portion, the engagement portion having a larger diameter or a larger width than the hole and being engaged with a peripheral edge portion of the hole. A tip end face of the convex portion has a dent portion formed by pressing the tip end face into a base portion side of the convex portion and an area around the dent portion constitutes the engagement portion. Thus, the nozzle forming member and the cover member are appropriately caulked and fastened.
-
公开(公告)号：US11359838B2
公开(公告)日：2022-06-14
申请号：US16578499
申请日：2019-09-23
Applicant: NORITZ CORPORATION
Inventor： Naoki Se , Shoji Okuda , Hideyuki Fujisawa , Taihei Terasawa , Masaki Kondo
Abstract: A heat exchanger includes a tube expansion portion formed by expanding a heat transfer tube so that an outer peripheral surface of the heat transfer tube is pressed against an inner peripheral surface of a hole provided in a side wall portion of a case. The tube expansion portion includes first and second bulge portions positioned respectively on the inside and the outside of the side wall portion so as to sandwich the side wall portion in an axial length direction of the heat transfer tube and configured such that respective outer peripheral surfaces thereof partially bulge outward in a radial direction of the heat transfer tube, an end portion tip end of the heat transfer tube is positioned apart from the second bulge portion, and the end portion tip end and a part in the vicinity thereof are expanded so as to be included in a part of the tube expansion portion. Thus, effects such as improving the precision with which the side wall portion of the case, the heat transfer tube, and a connecting tube are fitted to each other can be achieved, and as a result, the respective parts can be brazed easily and appropriately.
-
公开(公告)号：US10533742B2
公开(公告)日：2020-01-14
申请号：US15405017
申请日：2017-01-12
Applicant: NORITZ CORPORATION
Inventor： Takashi Akiyama , Ryosuke Umakoshi , Taihei Terasawa , Kenichi Sakurai , Tatsuya Karaki , Naoki Se
Abstract: A burner case and a burner device provided with the burner case are disclosed. A cover for closing an opening of a case body of the burner case is attached to the case body by a first caulking portion and a second caulking portion. A first caulking direction and a second caulking direction intersect with each other, the first caulking direction is a direction in which a first attachment piece and a first facing portion, those constituting the first caulking portion, face each other and are caulked, the second caulking direction is a direction in which a second attachment piece and a second facing portion, those constituting the second caulking portion, face each other and are caulked. Thus, the case body and the cover are not required to be screwed or the number of the screws is reduced, and leakage of gas from the burner case to outside is prevented.
-
-
Search Results
3
records
(took 0.01 seconds)
