公开(公告)号：US10352630B2

公开(公告)日：2019-07-16

申请号：US15374423

申请日：2016-12-09

申请人： NORITZ CORPORATION

发明人： Wataru Ooshita ,  Masaya Tateyama ,  Yukiko Noguchi

IPC分类号： F28F1/32 ,  F24D17/00 ,  F24D17/02 ,  F24H1/41 ,  F28D7/00 ,  F28D7/08 ,  F28D21/00 ,  F28F19/00

摘要： According to the present invention, a heat exchanger comprises a fin having a plurality of through holes. The plurality of through holes include mutually adjacent first and second through holes disposed on a side closest to a heating gas's inlet side. The fin has a slit located between the first through hole and the second through hole and cut into the fin from an edge thereof located on the heating gas's inlet side to a side farther from the heating gas's inlet side than a reference line connecting a center of the first through hole and a center of the second through hole. Furthermore, the fin has at least one opening between the slit and the first and second through holes. The opening includes a first opening having a portion located on the side farther from the heating gas's inlet side than the reference line.

公开(公告)号：US10094589B2

公开(公告)日：2018-10-09

申请号：US15324445

申请日：2015-07-02

申请人： NORITZ CORPORATION

发明人： Takeshi Oohigashi ,  Nobuhiro Takeda ,  Masaki Kondo ,  Wataru Ooshita ,  Kosuke Ichiyama ,  Yukiko Noguchi

IPC分类号： F28F1/10 ,  F24H1/14 ,  F24H9/00 ,  F28D1/053 ,  F28F1/32 ,  F28D7/08 ,  F28D21/00

摘要： A fin-and-tube type heat exchanger includes: a plurality of plate fins arranged in a case side by side in a fore-and-aft direction of the case; and a heat transfer tube including a plurality of straight-type tubular bodies each passing through these plurality of plate fins. First and second plate fins arranged side by side in the right-and-left width direction of the case are provided as a plurality of plate fins. The heat transfer tube has a connection tubular body connecting the straight-type tubular bodies passing through the first and second plate fins. The heat transfer tube passes through areas in which the first and second plate fins are arranged.

公开(公告)号：US09829204B2

公开(公告)日：2017-11-28

申请号：US14095948

申请日：2013-12-03

申请人： NORITZ CORPORATION

发明人： Takeshi Oohigashi ,  Makoto Hirotsu ,  Yukiko Noguchi

IPC分类号： F24F1/24 ,  F24H8/00 ,  F24H9/14 ,  F28D7/08 ,  F28F1/32

CPC分类号： F24F1/24 ,  F24H8/00 ,  F24H9/146 ,  F28D7/085 ,  F28F1/32 ,  Y02B30/102

摘要： In a primary heat exchanger, a heat conduction pipe is arranged as one connected pipe in a lower stage and an upper stage in a manner extending back and forth through a plurality of fins. The heat conduction pipe is arranged such that a pitch between the heat conduction pipes in the upper stage is shorter than a pitch between the heat conduction pipes in the lower stage. In addition, the heat conduction pipe is arranged such that a position in a center of each heat conduction pipe in the upper stage in a second direction orthogonal to a first direction in which the heat conduction pipe extends and a position in a center of each heat conduction pipe in the lower stage in the second direction are displaced from each other.