Fin for heat exchanger

A fin for a heat exchanger comprising:

• a fin member including a plurality of rows, each of the plurality of rows extending in a direction of a width of the member and having a plurality of valley sections alternating with a plurality of crest sections, wherein a flow of a fluid through the fin member flows in a direction perpendicular to the direction of the width, wherein the plurality of valley sections and the plurality of crest sections of each of the plurality of rows are offset with respect to the direction of the width of the member from the plurality of valley sections and the plurality of crest sections of an adjacent row;
• and
• a plurality of walls interposed between and joining the plurality of valley sections and the plurality of crest sections of each of the plurality of rows, wherein each of the plurality of walls includes a leading edge facing towards the flow of a fluid through the fin member and a trailing edge facing away from the flow of the fluid through the fin member, wherein the leading edges of all of the plurality of walls forming each of the plurality of the rows are offset with respect to the direction of the width of the fin member from the leading edges of all of the plurality of walls of each of the adjacent rows, wherein each of the plurality of walls is angled with respect to the direction of the width of the member to cause the trailing edge of each respective one of the plurality of walls to be offset with respect to the direction of the width of the fin member from the leading edge of that same one of the plurality of walls, wherein when continuing in a direction of the flow of the fluid through the fin member a direction of offset with respect to the direction of the width between the valley sections and the crest sections of an upstream row and the valley sections and the crest sections of an adjacent downstream row is the same as a direction of offset with respect to the direction of the width between the leading edge and the trailing edge of each of the walls.

A fin for a heat exchanger comprising:

• a fin member including a plurality of transverse rows, each of the plurality of transverse rows extending in a lateral direction of the fin member and having a plurality of valley sections alternating with a plurality of crest sections, wherein a flow of a fluid through the fin member flows in a direction perpendicular to the lateral direction of the fin member, wherein the plurality of valley sections and the plurality of crest sections of each of the plurality of transverse rows are offset from the plurality of valley sections and the plurality of crest sections of an adjacent one of the plurality of transverse rows with respect to the lateral direction of the fin member;
• and
• a plurality of walls interposed between and joining the plurality of valley sections of each of the plurality of transverse rows and the plurality of crest sections of each of the plurality of transverse rows, wherein each of the plurality of walls includes a leading edge facing towards the flow of the fluid through the fin member and a trailing edge facing away from the flow of the fluid through the fin member, wherein the leading edges of all of the plurality of walls forming each of the plurality of transverse rows are offset in the lateral direction of the fin member from the leading edges of all of the plurality of walls of each of the adjacent transverse rows, wherein each of the plurality of walls is angled with respect to the lateral direction of the fin member to cause the trailing edge of each respective one of the plurality of walls to be offset with respect to the lateral direction of the fin member from the leading edge of that same one of the plurality of walls, wherein when continuing in the direction of the flow of the fluid through the fin member a direction of offset with respect to the lateral direction between the valley sections and crest sections of an upstream one of the plurality of transverse rows and the valley sections and the crest sections of an adjacent downstream one of the plurality of transverse rows is the same as a direction of offset with respect to the lateral direction between the leading edge and the trailing edge of each of the plurality of walls.