Abstract:
A bifacial heat dissipator for a power button diode (20) comprises two fins (22,23) shaped like circular sectors, with the cut-off vertex contiguous to a part of said fins shaped like a sector of a ring having the same angular amplitude. In each fin there are two rectangular holes (29,30,31.32) specular in relation to a radial axis, aligned in the same substantially central positions. The fins form part of an assembly that also uses two flat springs (24,25) to exert pressure against the anode (62) and the cathode (63) of the diode in a container of thermosetting plastic. The container consists of a ring between two rectangular shoulders (51,52) all forming a single whole. In each shoulder there is an inward- facing transversal groove (53,54,55,56) close to each end. The grooves project beyond the external face of the fins for insertion under pressure of flat springs. An assembly of four diodes in parallel comprises a ring-shaped insulator (26) with flat faces and four protrusions set crosswise that delimit four seperate depressions (42,43,44,45) to receive the terminal parts of the fins. Two aluminium washers (27,28) are superimposed over the terminal parts projecting beyond the edge of their seats. With a pile of these assemblies a three-phase full -wave Graetz bridge rectifier can be realized. An electrically insulated central screw (90, 91a, 91b) tightens all the assemblies together with the phase and terminal polarities of the rectified current placed between adjacent washers in suitable positions.
Abstract:
Um ein Leistungshalbleitermodul (1) mit wenigstens zwei miteinander verschalteten Leistungshalbleitereinheiten (11), die ansteuerbare Leistungshalbleiter aufweisen, wobei jeder Leistungshalbleitereinheit (11) eine Kühlplatte (3,4) zugeordnet ist, mit der die Leistungshalbleiter Wärme leitend verbunden sind, bereitzustellen, der in seinem Aufbau kompakt und kostengünstig ist, wobei gleichzeitig ein Explosionsschutz bereitgestellt ist, wird vorgeschlagen, dass ein Modulgehäuse (2) vorgesehen ist, in dem die Leistungshalbleitereinheiten (11) angeordnet sind, wobei die Kühlplatten (3,4) zumindest einen Teil des Modulgehäuses ausbilden.
Abstract:
A self-leveling heat sink includes a spring-arm device having at least one aperture and at least one spring-arm is coupled to a substrate. The substrate has at least one package mounted thereon, so that when the spring-arm device is mounted to the substrate the at least one package passes through the at least one aperture. A heat sink operable to remove heat from the at least one package has at least one heat sink post operable to receive a heat sink clip located at the distal end of each of the at least one spring-arms. Each of the at least one spring-arms extending from an inside edge of the at least one aperture and operable to couple the heat sink to the at least one package.
Abstract:
A heat exchanger for cooling a plurality of heat-generating components with flat surfaces arranged in spaced parallel relation to one another comprises at least three flat, fluid-carrying panels, including a first end panel, a second end panel, and at least one middle panel. The middle panels have both of their opposed surfaces in thermal contact with a surface of a heat generating component. The end panels each have one surface in thermal contact with a surface of a heat-generating component. Inlet and outlet manifolds of the heat exchanger are in communication with the inlet and outlet openings of the middle panels. The inlet manifold communicates with the inlet opening of the first end panel, the outlet manifold communicates with the outlet opening of the second end panel, and the outlet opening of the first end panel communicates with the inlet opening of the second end panel.
Abstract:
A fluid distribution unit for a two-phase cooling system can include a reservoir configured to receive a two-phase flow of dielectric coolant. A first pump can be fluidly connected to a supply line extending from the reservoir. A heat rejection loop can be fluidly connected to the reservoir and can include a heat exchanger and a second pump. The second pump can circulate a flow of single-phase liquid coolant from the reservoir, through the heat exchanger, and back to the reservoir. A manifold can distribute coolant within the two-phase cooling system. The manifold can include a bypass fluidly connecting an inlet chamber to an outlet chamber. A valve can be installed in the bypass and can control a flow of pressurized coolant to maintain a desired pressure differential between the inlet and outlet chambers. The valve can be a differential pressure bypass valve.
Abstract:
The invention relates to a heat exchange device based on a pulsating heat pipe and a cooling arrangement with at least one heat exchange device. A technical objective of the invention is to improve the heat performance of a heat exchange device. The objective is achieved by a heat exchange device (1) based on a pulsating heat pipe comprising a plurality of pipes (9) to provide fluid paths between a first fluid distribution element (10) and a second fluid distribution element (11) of the heat exchange device (1), wherein each pipe (9) of the plurality of pipes (9) comprises a group of channels (12), wherein each of the first fluid distribution element (10) and the second fluid distribution element (11) comprises at least a plate (13) of a first type, wherein each plate (13) of the first type comprises openings (14) for providing an alignment functionality for the plurality of pipes (9), and wherein the plates (13) of the first type have an identical thickness, and wherein the first fluid distribution element (10) comprises a plate (15) of a second type, and wherein the plate (15) of the second type comprises openings (17) for providing fluid paths between the plurality of pipes (9), and wherein the plate (15) of the second type is positioned on a side of the plate (13) of the first type of plates of the first fluid distribution element (10) that is opposite to the second fluid distribution element (11).