Fujitsu General Limited

Daiki Shimano

Yoshinari Maema

Kotaro Oka

Shohei Nakata

Masatoshi Watanabe

Ryo Takaoka

A heat exchanger includes a plurality of flat heat transfer tubes and a header, wherein the header includes an inflow plate that divides an interior portion of the header into an inflow portion and a circulation portion located on an upper side of the inflow portion, a first partition member that divides the circulation portion into an ascending path to which the flat heat transfer tubes are connected and a descending path, that forms an upper communication path that connects the ascending path and the descending path on an upper side of the circulation portion, and a lower communication path that connects the ascending path and the descending path on a lower side of the circulation portion, and the inflow plate includes a first ejection hole that ejects, on the ascending path side and a downwind side, a refrigerant from the inflow portion to the ascending path.

Heat exchanger

A heat exchanger includes an inlet header in which a first inlet space and a second inlet space are formed, a plurality of first inlet-side heat exchanger tubes that are connected to the first inlet space, a plurality of second inlet-side heat exchanger tubes that are connected to the second inlet space, a return header in which a plurality of first return spaces connected to the first inlet-side heat exchanger tubes, respectively, and a plurality of second return spaces connected to the second inlet-side heat exchanger tubes, respectively, are formed, and a plurality of outlet-side heat exchanger tubes that are connected to the first and second return spaces, respectively, wherein a communication path that enables a first return space on a bottom side among the first return spaces and a second return space on a top side among the second return spaces to communicate is formed in the return header.

A heat exchanger includes a first-row heat exchange module through which a refrigerant is introduced from the outside, a second-row heat exchange module through which the refrigerant is discharged to the outside, a third-row heat exchange module through which the refrigerant is discharged to the outside, and a flow-splitting module that splits the refrigerant from the first-row heat exchange module into the second-row heat exchange module and the third-row heat exchange module, wherein the refrigerant reciprocates one time in a flow path, the first-row heat exchange module constitutes a forward path of the flow path, and both the second-row heat exchange module and the third-row heat exchange module constitute backward paths of the flow path.

A heat exchanger includes: a plurality of flat tubes; a fin in which a plurality of notches are arranged side by side in a vertical direction, the fin having a plurality of intermediate portions and a connecting portion connecting the intermediate portions to each other; and a first bulging portion having an upper end edge and a lower end edge provided between a first notch and a second notch, the upper end edge being positioned in the intermediate portion and the lower end edge being positioned in the connecting portion. The upper end edge has a first upper end positioned on an intermediate portion side, and a second upper end positioned on a connecting portion side, the first upper end being positioned to be higher than the second upper end, or the first upper end being positioned at the same height as the second upper end.

Heat exchanger and air conditioner including heat exchanger

A heat exchanger includes: a plurality of flat tubes that are stacked in a direction perpendicular to a refrigerant flow direction, and a plurality of fins that have a first flat tube insertion portion into which a first flat tube among the plurality of flat tubes is inserted, and a second flat tube insertion portion into which a second flat tube adjacent to the first flat tube is inserted. A first fin has, formed on the inner periphery of the first flat tube insertion portion, a cut and raised piece for spacing a fin pitch between the first fin and an adjacent second fin. The cut and raised piece has a raised portion of the same length as the fin pitch, and a folded portion that is folded back at the tip of the raised portion and that is in contact with the second fin.

Growing community of inventors

Kanagawa, Japan

Daiki Shimano