Abstract: A heat exchanger includes a cooling plate having a heat collection surface for fixing against an object to be cooled, an opposed heat transfer surface which may be provided with fins, and a cooling chamber over the heat transfer surface, the cooling chamber having an inlet port and an outlet port for circulating a fluid through the cooling chamber via a flow path between the ports. A flow distributor in the flow path forms a plurality of inlet channels communicating with the inlet port, a plurality of outlet channels alternating with the inlet channels and communicating with the outlet port, and a plurality of flow surfaces which are spaced from the heat transfer surface by gaps. The inlet channels communicate with the gaps so that a fluid entering the inlet channels via the inlet port will flow through the gaps, into the outlet channels, and out of the chamber via the outlet port. The gaps are dimensioned to increase fluid velocity and promote mixing of the fluid, thereby improving heat transfer.

Abstract: A fluid-containing cooling plate includes a bottom plate, a top plate, and metal wire or tubing formed into a circuit and sandwiched between the plates to form a chamber. The wire is plated or otherwise coated with a brazeable or solderable alloy which bonds it to the plates when the assembly is heated, thereby sealing the chamber. To make a two-phase cooling plate, slugs of plated metal are placed in the chamber and are bonded to the plates to provide support against collapse. The chamber is provided with a wicking structure, and is partially filled with an evaporable fluid via an inlet. A partial vacuum is then drawn, and the inlet is closed off. To make a single-phase cooling plate, wire partitions serving as baffles are provided in lieu of the slugs. These partitions can be arranged to provide a serpentine flow path between the inlet and an outlet, and are likewise plated with an alloy which melts to bond them to the plates.

Abstract: A spring clip manufactured from a single piece of metal for attaching an electronic component to a heat sink for defining a heat dissipation assembly. The spring clip comprises a main body having a bend with a cantilever on one side of the bend and a mounting region terminating in an engaging edge on the other side of the bend. Outriggers project perpendicularly from both sides of the mounting region and extend beyond the engaging edge In the assembly outriggers project through slots in the heat sink and the electronic component is secured between one side of the heat sink and the engaging edge of the spring clip. The outriggers preferably include retaining members which abut the opposite side of the heat sink thereby resisting rotation of the spring clip relative to the heat sink.