A heat sink includes an extruded component, a cast component, and an interface layer. The extruded component includes a first aluminum material and is configured to be coupled to a solid state light source. The cast component includes a second aluminum material overmolded onto a portion of the extruded component to form the interface layer. The interface layer is formed of at least one of the first and the second aluminum materials and abuts against and couples the extruded component to the cast component.

A heat sink includes an extruded component, a cast component, and an interface layer. The extruded component includes a first aluminum material and is configured to be coupled to a solid state light source. The cast component includes a second aluminum material overmolded onto a portion of the extruded component to form the interface layer. The interface layer is formed of at least one of the first and the second aluminum materials and abuts against and couples the extruded component to the cast component.

Embodiments provide a helical layer structure including: a helical core member which is formed of a flexible, lengthy, flat plate-like core member and which is formed of a steel plate made of a metal material, such as iron; and a polymeric coating layer which is formed of a polymeric material such as a thermosetting elastic material or a thermoplastic elastic material, and which coats the helical core member. The manufacturing method of the helical layer structure includes: a feeding step of feeding a core member having flexibility; a supply step of supplying the polymeric material having fluidity; a coating step of coating the core member with the polymeric material; a cooling step of cooling a coated intermediate which is coated with the polymeric material; and a helix formation step of helically twisting the coated intermediate to form the helical layer structure.

A recuperator including a number of neighbouring hexagonal sheets which are connected to each other. Flow passages are formed between neighbouring sheets. Each of the sheets, at its periphery, is at least partially surrounded by and connected to an associated connecting body. Neighbouring connecting bodies are connected to each other at at least a part of the periphery of the associated sheets and together form the wall of a housing. Passage openings are provided in the wall which are connected to the flow passages for allowing air into the flow passages via the passage openings. Neighbouring connecting bodies are provided with protruding parts and with recesses respectively on sides facing each other, wherein the forms of the protruding parts and of the recesses adjoin each other in order to connect the connecting bodies to each other by a press fit. Methods for producing a connecting body and for producing a recuperator.

In a method of manufacturing a liquid-cooling cold plate, cast molding is performed after embedding a metal pipe for supplying a cooling liquid inside a casting mold. Fixing brackets to be attached to the metal pipe is provided to maintain a positional relationship between a plurality of portions of the metal pipe embedded in the casting mold. The casting molding is performed by pouring molten metal into the casting mold while the fixing metal parts are attached to the metal pipe.

The invention relates to a method for producing a cooling device (10), which has at least one hollow body (30) made of a first material having good thermal conduction and a base body made of a second material having good thermal conduction, and a pre-product for the production of a cooling device (10) and a cooling device (10) for an electrical assembly and an electrical assembly having a cooling device of this kind. The hollow body (30) is coated on the outside with a third material and is filled on the inside with the third material, which has a lower melting temperature than the first material and the second material, wherein the filling (5) completely fills the hollow body and is then cooled, wherein the filled hollow body (30) is placed in a die-casting mould, wherein the second material is introduced into the die-casting mould as die casting with a first temperature and flows around the hollow body (30) at least partially, wherein the die casting melts off the third material of the surface coating (36) and melts on the first material of the hollow body (30) so that at least in regions an integral connection is formed between the die casting of the second material, which forms the base body (20), and the first material of the hollow body (30), wherein the die casting of the second material becomes rigid and solid, wherein during the solidification phase, the die casting of the second material heats the filling (5) made of the third material in the interior of the hollow body (30) until the melting temperature is reached, and wherein the melted third material is removed from the hollow body (30) under pressure.

The present invention discloses a preparation method for a hollow radiator and a hollow radiator. The preparation method comprises the following steps: 1) providing a feed and an insert raw material; 2) molding the insert raw material into an insert; 3) placing the insert in a cavity of a mold, and filling the cavity with the feed by injection molding in such a manner that the insert is surrounded by the feed, thereby obtaining a green body with the insert; 4) performing debinding treatment on the green body with the insert to remove the insert, thereby obtaining the green body of a hollow structure; and 5) sintering the green body to obtain the hollow radiator. By the preparation method for a hollow radiator according to the present invention, a radiator of a complex hollow structure can be fabricated, and the heat dissipation effect of the radiator can be improved. Moreover, the airtightness and leakproofness of the radiator can be guaranteed for a long time.

A module for constructing therefrom a heat exchanger is provided. The module includes two manifolds and a plurality of parallely arranged mats spanning between the manifolds. Each mat includes a plurality of heat exchange tubes arranged so as to define a plane, the heat exchange tubes being in fluid communication with the manifolds and spanning therebetween. Each of the manifolds includes selectively sealable end openings formed in facing ends thereof and defining a longitudinal flow path substantially perpendicular to the tubes and parallel with the planes defined thereby. Each of the manifolds further includes selectively sealable side openings on facing sides thereof and each defining a lateral flow path substantially perpendicular to the longitudinal flow path and to the planes defined by the tubes.

A cooling and heating plate, in particular for serving food and beverages, is connected to a cooling unit and an electrical heating device, preferably a silicone panel heater, is also provided on the under side of the plate. The plate is a multilayered plate having an upper plate, preferably of chrome nickel steel, and an aluminum plate situated thereunder. At least one steel pipe, which is preferably seamless with serpentine curves, having a compressive strength of at least 50 bar is integrally cast in the aluminum plate. As a result, carbon dioxide can also be used as a coolant. Fastening elements can also be integrally cast in the aluminum plate.

Provided is a flexible heat radiating sheet with high thermal conductivity. The heat radiating sheet includes a resin material and a heat radiating member that extends in the planar direction and has a required thickness. The heat radiating member is bent such that in portions of a thin plate member between adjacent slit rows, projecting portions and recess portions are alternately repeated in the X-axis direction, and a projecting portion and a recess portion that are adjacent in the Y-axis direction are located facing each other. The heat radiating member is entirely buried in the resin material excluding apexes of the projecting portions and the recess portions.