Abstract: A single heat exchanger includes a first core and a second core and a connecting mechanism interconnecting the first core and the second core. The first core and the second core are positioned at an angle relative to each other via the connecting mechanism.

Abstract: A plate heat exchanger for accommodating a circulating refrigerant and heat transfer fluid. The plate heat exchanger includes a plurality of heat transfer plates and at least one electrode plate. The plurality of heat transfer plates are mounted in parallel relationship to each other defining alternating flow spaces for a refrigerant and a heat transfer fluid. The electrode plate is located in each refrigerant flow space and is spaced from the adjacent heat transfer plates. The electrode plate includes outer electrode surfaces on each side thereof to produce an electric field. The effect of the electric field is an increase in the heat transfer rate between the refrigerant and heat transfer fluid. The invention also includes a method of exchanging heat between a heat transfer fluid and a refrigerant in a plate heat exchanger.

Abstract: A multichannel flat tube for a heat exchanger has a plurality of parallel flow channels aligned in a row, side by side, along a transverse axis of the tube. At least the inner flow channels have oval cross-sections, and major semiaxes of the inner flow channels are inclined relative to the transverse axis of the tube at an acute angle. The flat tube can be designed for high operating pressures with relatively low weight and relatively high heat exchange capability. The construction may be used, for example, in CO2 air conditioners in motor vehicles.

Abstract: A corrugated fin for a double heat exchanger having a condenser and a radiator integrally includes a condenser fin and a radiator fin. Each of the condenser fin and the radiator fin has plural bent portions and plural flat portions each of which connects adjacent bent portions. A louver-forming processing amount of the flat portion of the condenser fin is set smaller than that of the flat portion of the radiator fin. Plural dimple-shaped plastically deformed portions are formed in the flat portion of the condenser fin, so that a whole processing amount of the condenser fin becomes substantially equal to that of the radiator fin. As a result, a radius of curvature of each bent portion of the condenser fin is substantially equal to that of the radiator fin, and the integrated fin is restricted from being deformed.

Abstract: The invention pertains to a new type of cooling system for cooling of heat sources, especially for cooling of electric components, with a cooler comprising, on a housing through which a coolant can flow, at least one first cooling surface that can be splashed with the coolant and at least one second cooling surface for flange-mounting of the heat source.

Abstract: A multi-chamber tube for a heat exchanger arrangement of a motor vehicle has at least two chamber sections which extend parallel to each other and side-by-side. Different liquid or gaseous heat transfer media are used in the chamber sections which have widths significantly greater than their heights. At least one chamber section has a greater height than at least one other chamber section. The multi-chamber tube is used in a coolant radiator and charge air cooler combination.

Abstract: A downflow reboiler-condenser which can distribute and introduce an evaporating fluid (fluid to be evaporated) uniformly and securely into evaporation passages and which can also achieve simplification of its structure and reduction in the fabrication cost. This reboiler-condenser is provided with a reservoir 36 above a heat exchanger core 34 and with liquid distributors 37 located above evaporation passages 33 respectively. The liquid distributors 37 distribute the evaporating fluid collected in the reservoir 36 into the evaporation passages 33 uniformly.

Abstract: A tube heat exchanger for the production of carbon black includes a support plate located at the lower end of a space through which heat exchanger tubes extend. The plate includes upper and lower spar support plates forming a spar space therebetween through which the heat exchanger tubes extend. The spar space is divided into a plurality of canals by partition walls. Each canal has its own inlet and outlet for conducting a flow of cooling medium. The flow direction of cooling medium in each canal is opposite that of an adjacent canal. Portions of the support plate are formed of an aluminum-containing, iron-based alloy produced powder-metallurgically.

Abstract: A heat sink assembly includes a heat sink (60), a fan (20) and a fixing device (70). The heat sink has a plurality of fins (64). The outermost fins define catches (66). The fixing device includes an upper portion (10) and a lower portion (30). The upper and lower portions respectively define upper and lower openings (14, 36) providing air flow access for the fan. A pole (18) depends from each comer of the upper portion. The fan has first through holes (22) for extension of the poles therethrough. A pair of latches (38) extends upwardly from the lower portion, for engaging with the upper portion. The upper portion defines two cutouts (16) in communication with the upper opening, for receiving the latches. A side wall (50) depends from each of two opposite sides of the lower portion. Each side wall defines two recess (54) at respective opposite ends thereof. A barb (52) is formed at each opposite end of each side wall, for engaging with the corresponding catch of the heat sink.

Abstract: A workpiece chuck includes an upper assembly on which can be mounted a flat workpiece such as a semiconductor wafer. A lower assembly is mountable to a base that supports the chuck. A non-constraining attachment means such as vacuum, springs or resilient washers applied to the chuck holds the upper assembly to the lower assembly, the lower assembly to the base and can hold the wafer to the top surface of the upper assembly. By holding the chuck together by non-constraining means, the chuck layers can move continuously relative to each other under expansion forces caused by temperature effects, such that mechanical stresses on the chuck and resulting deformation of the chuck and workpiece over temperature are substantially eliminated. A plurality of support members including inclined surfaces provided between an upper and lower portion of the chuck maintain the top surface of the chuck and any workpiece mounted thereon at a constant height over temperature.

Abstract: The present invention provides a heat-exchange coil assembly making it possible to enlarge a heat conduction area within a limited volume by lowering the pitch between heat-exchange coils to a minimum level without providing a welding space. The heat-exchange coil assembly comprises an inlet header 2 at an end section thereof, an inlet tube 3 for inletting a heat exchange medium provided in a drum, an outlet header 4 located with a space from the inlet header at an end section thereof, and a plurality of heat-exchange coils with the outlet tube 5 for outletting a heat-exchange medium from the drum, inlet header 2, and outlet header 4 communicated to each other and also having a common center line, in which the heat-exchange coils are alternately linked to both sides of the inlet header 2 and outlet header 4.

Abstract: A laminate-type heat exchanger includes a core 10 formed by a plurality of plate-shaped tubular elements 20 laminated in a thickness direction thereof. Each tubular element 20 is provided with two refrigerant passages 25a and 25b extending in a longitudinal direction thereof and arranged fore and aft. The core 10 includes a plurality of passes P1 to P4 each formed by a prescribed number of the refrigerant passages arranged in the width direction of the core 10 and a turn portion T formed between the upper portions of the second pass P2 and the third pass P3. At a prescribed portion of the turn portion T, a refrigerant flow resisting portion including a semi-restricting passage 43 and/or an interrupting passage 44 is provided. The refrigerant passed through the second pass P2 is restricted by the refrigerant flow resisting portion when passing through the turn portion T to be equally distributed. Then, the refrigerant is introduced into the third pass P3 in an equally distributed manner.

Abstract: A heat transfer device, particularly an exhaust gas heat transfer device, having a tube bundle made of rectangular tubes for guiding the gas. A jacket surrounds the tube bundle; is used for guiding the liquid coolant and is equipped with a coolant inlet 17 and a coolant outlet 18. The rectangular tubes of the tube bundle 10 are provided with outwardly directed projections 22 which determine the distance of adjacent rectangular tubes with respect to one another and to the interior wall of the jacket 11.

Abstract: A fin and tube heat exchanger includes fins shaped along dynamically, empirically determined isothermal lines. The fins preferably have deflectors along a trailing edge thereof to concentrate heat flux into a back row of tubes. The deflectors bridge adjacent fins to define baffles. The preferred fin shape may be obtained empirically by trimming fin areas exhibiting excessive temperatures during operation.

Abstract: A clip includes a body (10) having a spring portion (12) and a leg (14) formed on a first end of the spring portion for engaging with a first side of a heat generating device, such as a central processing unit module. A fastener (20) has a spring plate (24) connected to a second end of the spring portion of the body and is engageable with an opposite second side of the heat generating device for securing a heat sink to the heat generating device. A pair of connecting tabs (26) extends from the fastener above the body for pivotally retaining an actuating member (30) therebetween. The actuating member forms cams (34) engaging the spring portion of the body whereby, when the actuating member is manually operated, the camming engagement between the actuating member and the spring portion drives the fastener to engage the second side of the heat generating device.

Abstract: A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer frame. The outer frame of the fan is made of a highly thermally conductive material such as aluminum. A radiation board is fixed to or formed integrally with a lower surface of the outer frame. Heat generated from a heat generating device is conveyed through the radiation board to the outer frame. The blower is provided with radiation fins so that the heat conveyed to the outer frame is transferred to the radiation fins as well.

Abstract: A heat sink provided with a heat conducting section 8 having a heat absorbing surface in contact with the heat emitting component, and fins 10 formed by being projected from the said heat conducting section 8, said fins 10 having air holes 11, and heat conducting section 8 being provided with clamps 7 for fixing to the heat emitting component.

Abstract: A method for the cleaning of heat exchange tubes and a collecting device for the collection of deposits from heat exchange tubes, include releasing deposits and collecting the deposits with a collecting vessel. The collecting vessel has an inlet orifice that completely encloses the underside of a tube plate in which exit-side tube ends are disposed. The collecting vessel has an inflatable hose for sealing off the collecting vessel. The collecting vessel is capable of being folded together, so that it can be introduced through a service orifice into the heat exchanger. The collecting vessel provides simple handling and positioning and serves, in particular, for use in a nuclear plant.

Abstract: The partitions are inserted through an open end of the cylindrical tubular wall of the fluid box, positioned and immobilised by means of deformations in the tubular wall, before the tubes are inserted and the assembly is soldered in a fluidtight manner. According to the invention, the deformations are localised on the outside of the region of the perimeter of the tubular wall on which the passage openings for the tubes extend, so as not to affect these openings. The method may be used in a condenser for a motor vehicle air conditioning unit.

Abstract: A double heat exchanger includes a condenser having a condenser core and a condenser header tank, and a radiator having a radiator core and a radiator header tank. The condenser header tank is composed of a core plate having clamping portions and a tank portion having protruding portions. The protruding portions of the tank portion are clamped by the clamping portions of the core plate so that the tank portion is connected to the core plate in the condenser header tank. The protruding portions of the condenser header tank contacts the radiator header tank, thereby preventing the condenser and radiator header tanks from being inclined toward each other. Therefore, the condenser and radiator header tanks contact and are brazed to each other in a relatively small area. As a result, heat conduction from the radiator to the condenser is prevented, and heat exchange performance of the condenser can be improved.