A heat pipe with a non-condensable gas includes a thermal conductor, and a working fluid and a non-condensable gas filled into a hollow chamber of the thermal conductor, and the thermal conductor has a heat-absorbing side attached to a heat-generating electronic component and an exothermal side attached to a radiator, and the exothermal side has at least one protrusion, and the exothermal side with the protrusion can reduce the contact area with the radiator, and the heat pipe lowers the conduction efficiency by the non-condensable gas and the protrusion, so as to achieve a work efficiency of the heat-generating electronic component in an operation within a working temperature range.

An electric device (1) comprises a portion generating heat and a portion for dissipating said generated heat by heat exchange with a fluid, wherein said heat dissipating portion comprises means for generating a turbulent flow in the fluid.

A heat pipe with a non-condensable gas includes a thermal conductor, and a working fluid and a non-condensable gas filled into a hollow chamber of the thermal conductor, and the thermal conductor has a heat-absorbing side attached to a heat-generating electronic component and an exothermal side attached to a radiator, and the exothermal side has at least one protrusion, and the exothermal side with the protrusion can reduce the contact area with the radiator, and the heat pipe lowers the conduction efficiency by the non-condensable gas and the protrusion, so as to achieve a work efficiency of the heat-generating electronic component in an operation within a working temperature range.

The present invention relates to an enhanced heat dissipation module, a cooling fin structure and a stamping method thereof. The enhanced heat dissipation module includes a first cooling fin and a second cooling fin. The first cooling fin includes a first tapered tunnel protruding outwards, and the second cooling fin includes a second tapered tunnel protruding outwards. The first tapered tunnel and the second tapered tunnel jointly encircle and form a flow guide channel. Accordingly, a pressure difference is generated by hot air passing through the tapered tunnels, thereby increasing natural thermal convection and further enhancing heat dissipation efficiency of the cooling fins.

Plate (710) for a heat exchanger between a first medium and a second medium, the plate being associated with a main plane (P) of extension and a height direction (H) perpendicular to said main plane, and comprising a first heat transfer surface (714) on a first side (713) of the plate, arranged to be in contact with the first medium flowing along said first side; a second heat transfer surface (716) on a second side (715) of the plate, arranged to be in contact with the second medium flowing along said second side; a plurality of indentations (720,730,740) in the plate, formed by the material of the plate bulging out locally in the said plate height direction, of which a plurality are bridge-shaped indentations (730) comprising two respective through-holes (732a) in the plate, as well as a respective bridge part (734) forming a passage (706,706) between the said through-holes, and wherein the passage has a general direction being substantially parallel to a general flow direction (D) of the second medium past the bridge-shaped indentation in question. The invention is characterised in that, for at least a plurality of the said bridge-shaped indentations, the shape of the respective bridge part, in a cross-section taken perpendicularly to both the main plane and to the said general direction of the passage in question, comprises a local minimum (737), so that the height of the bridge part, in said cross-section, first increases, then decreases to the said local minimum, and then again increases.

A method for detecting a leak in a heat exchanger plate includes positioning the heat exchanger plate between a first fixture and a second fixture to create both a first sealed space between the heat exchanger plate and the first fixture and a second sealed space between the heat exchanger plate and the second fixture. The first sealed space is on one side of the heat exchanger plate and the second sealed space is on the other side of the heat exchanger plate. The method includes supplying an inert gas to the second sealed space, drawing a vacuum in the first sealed space, and detecting whether the first sealed space includes the inert gas. The presence of inert gas indicates the plate is not leak-tight.

A refrigerant heat exchanger is provided and includes: a hollow container having a cylindrical shape; a plate stack disposed on an inner lower side of the hollow container, including plates each having a front side and a back side with a plurality of concavo-convex portions formed thereon which are stacked to form a first heat exchange flow passage through which a first refrigerant flows and a second heat exchange flow passage through which a second refrigerant flows; a supply pipe disposed in an interior space of the hollow container above the plate stack and configured to supply the first refrigerant to the plate stack; and a discharge pipe configured to exchange heat between the first refrigerant supplied from the supply pipe and the second refrigerant flowing through the plate stack and to discharge the first refrigerant.

A flexible heat sink with a flexible base having a first side configured to engage a heat generating component, and a second side opposite the first side. A plurality of groups of fins extend from the second side of the base. The groups of fins are positioned in an array and spaced apart lengthwise and width wise across the base to enable the heat sink to flex lengthwise and width wise. The heat sink is able to flex lengthwise and width wise between the groups of fins. The fins and groups of fins also may provide some flex. The fins may define triangular, rectangular, or u-shaped channels to enable air flow through the heat sink.

The present invention relates to an intermediate product for joining and coating by brazing comprising a base metal and a blend of boron and silicon, said base metal having a solidus temperature above 1040 C., and the intermediate product has at least partly a surface layer of the blend on the base metal, wherein the boron in the blend is selected from a boron source, and the silicon in the blend is selected from a silicon source, and wherein the blend comprises boron and silicon in a ratio of boron to silicon within a range from about 3:100 wt/wt to about 100:3 wt/wt. The present invention relates also to a stacked intermediate product, to an assembled intermediate product, to a method of brazing, to a brazed product, to a use of an intermediate product, to a pre-brazed product, to a blend and to paint.

A middle member of heat dissipation device and the heat dissipation device. The middle member includes a middle member main body having a first face, a second face, multiple perforations and a channeled structure. The channeled structure is disposed on the first face or the second face. The perforations are formed through the middle member main body between the first and second faces. The channeled structure and the perforations are arranged in alignment with each other or not in alignment with each other. The middle member and a first plate body and a second plate body are overlapped with each other to form the heat dissipation device. The complex structures disposed on the first and second faces of the middle member main body are able to achieve a stable vapor-liquid circulation effect.