A plate heat exchanger includes heat transfer plates each of which has openings at four corners thereof, and which are stacked together. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged, with an associated heat transfer plate interposed between the first and second flow passages. The openings at each of the four corners communicate with each other, thereby forming a first header and a second header, the first header allowing the first fluid to flow into and flow out of the first flow passage, the second header allowing the second fluid to flow into and flow out of the second flow passage.

The present disclosure provides a heat exchanger flat tube and a heat exchanger with the heat exchanger flat tube, the heat exchanger flat tube includes two plates opposite to each other, a fluid passage is formed between the two plates, a turbulence structure is provided in the fluid passage and has a gradually expanding portion and a gradually narrowing portion, both an extension direction of the gradually expanding portion and an extension direction of the gradually narrowing portion are consistent with a flow direction of a fluid, and the gradually narrowing portion is located downstream of the gradually expanding portion along the flow direction of the fluid.

In a header plateless type heat exchanger, to suppress temperature rise at an apical portion of a tube into which exhaust gas at high temperatures or the like flows, to thereby improve durability. A recessed groove portion 4c recessed inward with narrow width is formed on outer face side of each of a pair of plates, in parallel to a swelling portion 4 and in the approximately same length.

A method for forming a heat exchanger plate includes: securing a wave form metallic sheet to a heat exchanger plate substrate, the substrate comprising a first face and a second face opposite the first face, the securing of the wave form metallic sheet being to the first face; and removing peaks of the sheet.

A sink composed of metal, preferably composed of a solid metal block, in particular composed of aluminium, and also to a method and a tool for the production of same. The heat sink has a plurality of fluid lines for conducting cooling fluid which are separated from one another by heat sink ribs arranged between them, which are arranged next to one another and which run in a parallel manner. It is characterized in that the fluid lines are formed by grooves which are milled into the metal.

Mg and Bi are contained in each of a first fillet in a first braze joining portion in which a tube and a fin join, a second fillet in a second braze joining portion in which the tube and a header plate join, and a third fillet in a third braze joining portion in which the header plate and a tank body join. A concentration of Mg of each of the first to third fillets is from 0.2% or more to 2.0% or less by mass. When the tube includes a brazing material layer, a concentration of Mg of the tube at its plate thickness center is from 0.1% or more to 1.0% or less by mass. When the fin includes a brazing material layer, a concentration of Mg of the fin at its plate thickness center is from 0.2% or more to 1.0% or less by mass.

The invention relates to a plate and fin heat exchanger for bringing into a heat exchange relationship at least one refrigerant fluid and one calorigenic fluid, having a plurality of plates arranged parallel to a longitudinal direction so as to define a plurality of passages between said plates, at least one passage being formed between two adjacent plates and having at least one heat exchange structure equipped with at least one series of fins extending parallel to the longitudinal direction and following one another in a lateral direction, the fins, within the passage, defining channels for the flow of the fluids. According to the invention, at least one fin, over at least part of its surface, has a surface texturing in the form of striations arranged parallel to the longitudinal direction.

A total heat exchange element includes a stacked body that is formed by alternately stacking a first layer provided with a first passage through which a first air flow passes and a second layer provided with a second passage through which a second air flow passes. The stacked body includes a partition member between the first layer and the second layer, a spacing member provided in the first layer and the second layer and maintaining a spacing between the partition members facing each other, and a latent heat shielding member provided partly on the partition member and shielding transfer of latent heat between the first air flow and the second air flow through the partition member.

A power electronics assembly includes one or more power electronics devices, and a heat exchanger to which the one or more power electronics devices are mounted. The heat exchanger includes an inlet manifold and an outlet manifold, and one or more fluid pathways extending connecting the inlet manifold and the outlet manifold, the heat exchanger configured to transfer thermal energy from the one or more power electronics devices into a flow of fluid passing through the one or more fluid pathways. Thee one or more fluid pathways include one or more internal enhancements and channel configurations to enhance thermal energy transfer by promoting boiling of the flow of fluid and to reduce the pressure drop in the pathways under a two-phase flow condition. The flow of fluid is a flow of liquid refrigerant diverted from a condenser of a heating, ventilation, and air conditioning (HVAC) system.

A heat exchanger including a plurality of heat exchanger plates in a stacked arrangement. At least two counterflow sections are positioned adjacent each other. The counterflow sections comprise an intermediate section of each heat exchanger plate. The heat exchanger plates configured to transfer heat between a first fluid and a second fluid flowing in an opposite directions from the first fluid through a respective heat exchanger plate. At least one tent section is positioned on each end of each counterflow section. The tent sections are configured to angle the flow direction of the first and second fluids in the tent sections relative to the flow direction in the counterflow sections. A wall is positioned between each tent section and each counterflow section configured to provide a load path at opposite ends of the heat exchanger to oppose forces due to pressure on the tent sections.