The invention relates to a heat exchanger (10) with tubes (80) and a collector box (20). Said collector box (20) has a tube-plate (30) with tube openings (60) and with angled or rounded lateral regions (110,120).

In a heat exchanger (10) for transferring heat from a first fluid to a second fluid, which heat exchanger (10) comprises one or more flow passages (12) for a first fluid, the outer wall (26) of these passages is in heat-transferring contact with a flow body (20) made from metal foam for a second fluid. This metal foam has a gradient of the volume density of the metal, so that it is possible to achieve a favorable equilibrium between heat transfer and conduction, on the one hand, and flow resista...

To create a heat exchanger which provides for a high temperature compensation between the media, can at the same time be produced at low cost and satisfies the thermal stresses, it is proposed that the heat exchanger has a first distribution chamber (5) which is connected with a second distribution chamber (7) by means of tubes (22, 6) for the passage of hot medium (2), the tubes (6) extending through the inlet region (11) of the cooling medium (3) and an outer chamber (12), that lateral ports (...

A heat exchanger (20) includes a stack (22) of heat exchanger tubes (24), with the stack (22) having a pair of spaced ends (26, 28) that are received into respective manifolds (30, 32) that direct a first fluid (33), such as an exhaust gas flow of a vehicle, to and from interiors (34) of the tubes (24). The manifolds (30) and (32) are bonded to the respective ends (26) and (28) using a suitable bonding technique, such as soldering. Each end (26, 28) has an outer periphery (54) that includes furr...

An improved heat collector in a fluid-cooling system for a computer includes a case, and a cooling plate. The case comprises a water inlet, a water outlet, a top surface, and a bottom surface, wherein the bottom surface is a heat collecting face. The cooling plate is firmly connected to the top surface of the case, the cooling plate further comprising a plurality of cooling fins protruded upwards. A natural airflow can be formed among the cooling fins of the heat collector; therefore the heat co...

A heat exchanger includes a plurality of plate-shaped heat exchanger units and a plurality of flat fins arranged on the units, respectively. Each of the units has a first planar fluid communication chamber for receiving the flat fin. The flat fin has a first end provided with a first recess and a second end opposing to the first end and provided with a second recess. The first recess includes a circular opening and a cutout part. The second recess includes a circular opening and a cutout part. A...

Heat exchanger (1), in particular a gas condenser for a CO.sub.2 coolant, comprising at least one two-part collector chamber (4) consisting of a base (3) and a cover (5) and a heat exchanger network consisting of flat tubes (2) and corrugated ribs.

A heat sink comprises a plurality of stacked fins being combined. Each fin comprises a plate body with two pairs of locking structures formed symmetrically on two opposite edges of the plate body. Each locking structure comprises an interval part extending integratedly from the plate body, a bearing part depending from the interval part, a lateral position portion and a detaining portion extend continuously from the bearing part. A tab is formed on each detaining portion. The fins are combined i...

Apparatus and method for cooling heated fluids, such as exhaust gases, flowing through a heat exchanger comprising one or more exhaust plenums and one or more coolant plenums, and providing increased coolant velocity in that portion of the coolant plenums contacting the inlet portion of the exhaust plenums. Local increased coolant velocity is provided by any means, including decreasing the area-in-flow of the coolant plenums wherein increased velocity is desired, shaping or baffling either or bo...

A first heat sink is built including two sets of fins with a gap between the two fin sets. The gap is configured to allow the placement of a second heat sink between the two fin sets of the first heat sink. The first heat sink also includes slotted mounting lugs to allow the second heat sink to be mounted to the first heat sink allowing for varying stack up tolerances of the heat generating devices cooled by the first and second heat sinks.