A fin, comprising: multiple fin subunits arranged in multiple rows, the fin subunits in two adjacent rows being arranged in an offset fashion. Each of the fin subunits comprises: a first direction center line and a second direction center line perpendicular to the first direction center line; a hole located at a central part of the fin subunit; four fenestrated zones, with two adjacent fenestrated zones in the four fenestrated zones being arranged as mirror images of each other, centered at the first or second direction center line therebetween; a flat zone comprising a hole periphery flat zone, the hole periphery flat zone being disposed between the hole and each fenestrated zone; each fenestrated zone comprises first, second, third and fourth boundaries, wherein the first boundary is located at that side of each fenestrated zone which faces the hole, the second boundary is located at that side of each fenestrated zone which faces away from the hole, and the third and fourth boundaries extend in a direction parallel to the first direction center line; the first boundary forms a demarcation line between the hole periphery flat zone and each fenestrated zone, and at least a portion of the first boundary is an elliptical arc or a circular arc that is not concentric with the circle center of the hole.

A heat exchanger includes an outer tube having a first axial end and a second axial end, and a pressure barrier tube positioned generally concentric to and within the outer tube such that a first flowpath is defined axially through at least a portion of the outer tube and radially between the outer tube and the pressure barrier tube. A second flowpath is defined within and at least partially axially through the pressure barrier tube. The heat exchanger also includes a first plurality of fins coupled to and extending between the outer tube and the pressure barrier tube, through the first flowpath, and a second plurality of fins coupled to and extending radially inward from the pressure barrier tube, through the second flowpath. A first fluid in the first flowpath exchanges heat with a second fluid in the second flowpath via heat transfer through the first plurality of fins, the pressure barrier tube, and the second plurality of fins.

A finned heat exchanger tube, including a tube, a plurality of fins, and a plurality of outer casings. The tube includes an elongated hollow body having a wall. The plurality of fins is disposed on the wall of the tube along the longitudinal axis of the tube; the plurality of fins each includes a plurality of hollow protrusions, and corresponding hollow protrusions of the plurality of fins form a plurality of microchannels parallel to the longitudinal axis of the tube. The plurality of outer casings encircles the plurality of fins, respectively.

A heat exchange assembly (1) for a heat exchanger, a heat exchanger comprising the heat exchange assembly (1), and a mold forming the heat exchange assembly (1) are provided. The heat exchange assembly (1) comprises: multiple heat exchange tubes (11) through which a heat exchange medium flows; a connecting plate (12) connected between adjacent heat exchange tubes (11); and a heat exchange plate (121) formed by at least one part of the connecting plate (12). The mold comprises: a first mold, the first mold forming holes (110) in the multiple heat exchange tubes (11); and a second mold (2), the second mold having a mold cavity (20) forming a main body of the heat exchange assembly (1), the mold cavity (20) having an opening (21), the heat exchange assembly (1) being extruded from the opening (21) of the mold cavity (20) of the second mold (2), and the opening (21) being strip-shaped and extending along a curved line.

The present disclosure presents a heat exchange plate with slotted airfoil fins for a printed circuit heat exchanger. In the present disclosure, a herringbone streamlined slot is arranged on a fin so that a part of the heat exchange fluid can flow through a channel of the slot and flow out from the tail of the fin. In such a way, the perpendicular hitting on the fin can be prevented, thereby prevent forming of the stagnation area, mitigating phenomenon of substantial flow resistance in this area and, in turn, reducing the pressure drop of channel. Meanwhile, the slotted area could substantially increase the heat exchanging area and thus improve the heat exchanging performance.

A heat exchanger includes a first plate defining a first plurality of undulations that extend along a first axis and a second axis, and a second plate defining a second plurality of undulations. The second plate is spaced apart from and coupled to the first plate to define a first fluid flow passage. A first flow area of the first fluid flow passage is constant from a first inlet to a first outlet. The heat exchanger includes a third plate defining a third plurality of undulations. The third plate is spaced apart from and coupled to the second plate to define a second fluid flow passage. The second fluid flow passage is discrete from the first fluid flow passage. A second flow area of the second fluid flow passage is constant from a second inlet to a second outlet.

A circuit board assembly for electronic devices includes a circuit board having a first surface and a second surface opposite the first surface, and a heat sink carrier disposed on the first surface of the circuit board. The heat sink carrier includes at least one clamp portion. The assembly also includes a heat sink. The heat sink is positioned in the at least one clamp portion of the heat sink carrier to transfer heat from one or more electronic devices to the heat sink via the heat sink carrier.

A heat exchange tube, a heat exchanger, and a manufacturing method for the heat exchange tube are provided. The heat exchange tube includes a tube wall and an outer fin, the tube wall is folded into a tube body, the tube body is provided with an inner fin therein, and the inner fin divides an inner chamber of the tube body into a plurality of flow channels. The outer fin is arranged outside the tube body. The outer fin is folded from a same plate with at least one of the tube wall and the inner fin.

Provided are an electric device and a heat radiator capable of suppressing vibration caused by external stress of the heat radiator. The electric device includes a substrate; an electronic component attached to the substrate; and a heat radiator including at least one first fin, and a second fin facing the first fin, thermally connected to the first fin, and provided at a position closer to an attachment surface of the substrate than any of the first fins. The heat radiator is thermally connected to the electronic component, and one end of an attachment member is attached to the first fin, and another end of the attachment member is attached to the substrate. The attachment member has a height with respect to the attachment surface that is higher than a thickness of the first fin.

A heat exchanger has a turbulating insert arranged between a pair of plates. The turbulating insert is permeable to fluid flow in both a high-pressure-drop direction and a low-pressure drop direction. One portion of the turbulating insert has the high-pressure-drop direction oriented at a non-zero angle to the high-pressure-drop direction of another portion. A method of making the heat exchanger includes forming a turbulating insert, removing a portion of the turbulating insert to create a cavity within the turbulating insert, placing the remaining turbulating insert into a stamped first plate, and placing the removed portion of the turbulating insert into the cavity at a non-zero angle of rotation relative to the remaining turbulating insert.