A tube-to-header sealing system for a heat exchanger comprises a pair of mating header plates, each header plate having a wall with a plurality of openings therein and including a continuous depression along the circumference of each header plate opening which forms one-half of an O-ring groove. Each of a plurality of O-rings is positioned in each O-ring groove and the header plates are secured together such that the header plate plurality of openings are aligned and trap each of the plurality of O-rings in O-ring grooves. A plurality of spaced-apart tubes each having a tube end secured in an opening in the wall of the header to form a tube-to-header joint are expanded outwardly to provide sufficient O-ring deformation to obtain a seal. In service, the resiliency of the O-ring seal allows for expansion and contraction of the tubes without the build-up of high stresses at the tube-to-header joint.

The invention relates to a profiled part (12) for a heat exchanger, configured to have at least one fluid flow tube (14) passing through it, comprising, for each flow tube (14), a hollow cylinder (18) comprising an inner surface configured to receive said flow tube (14), the cylinder (18) having an inner diameter which is substantially equal to the outer diameter of said flow tube (14). The profiled part (12) is characterized in that the profiled part comprises a slit (16) extending over the whole length of the cylinder (18) and configured to permit, by application of at least one mechanical force to the profiled part, a modification in the inner diameter of the cylinder (18) in order respectively to permit the insertion of the tube into the cylinder (18) or the clamping of the tube (14) by the inner surface of the cylinder (18). The invention also relates to a heat exchanger (10) comprising such a profiled part (12) and a flow tube (14).

The present invention relates to a refrigeration appliance having a compressor for effecting the refrigeration cycle, a heat exchanger (1) for condensing the refrigerant fluid through refrigerant flow tubes (2) in serpentine form where the refrigerant flow is provided, said heat exchanger (1) being disposed against a fan (3) that is structurally integrally provided to effect forced heat convection for cooling said heat exchanger (1) by blowing air thereon.

A heat sink structure and a manufacturing method thereof. The heat sink includes a main body having multiple main body connection sections and multiple radiating fins each having a connection section. The main body has a first end and a second end. The first and second ends define a longitudinal direction. The multiple radiating fins are placed in a mold. A mechanical processing measure is used to high-speed impact the main body so as to thrust the main body into the mold. Accordingly, the connection sections of the radiating fins placed in the mold are high-speed thrust into the main body connection sections and moved in the longitudinal direction to the second end of the main body to tightly integrally connect with the main body.

An electric power converter includes a semiconductor module, an electronic component, a plurality of cooling tubes, a case, a main pressure member for pressing a stacked semiconductor section in a stacking direction, and a sub-pressure member for pressing a stacked component section in the stacking direction. The stacked semiconductor section and the stacked component section are stacked in line. A pressing force of the main pressure member is greater than a pressure pressing force of the sub-pressure member. The main pressure member is disposed at an end portion of the stacked component section far from the stacked semiconductor section. A supporting portion that supports the stacked semiconductor section from the stacked component section side is disposed in the case so as to prevent the pressing force of the main pressure member from acting on the stacked component section.

The present invention relates to an integrated connector and a heat exchanger including the same, in which a connector main body is formed by pressing one pipe, a cap is press-fitted into the connector main body, such that the integrated connector is formed so that an interior of the connector main body is blocked by the cap. Therefore, the number of components used to manufacture a connector, which connects and securely couples a header tank and a gas-liquid separator, may be reduced, the integrated connector may be easily manufactured, and a brazing defect may be reduced at portions where the integrated connector is joined to the header tank and the gas-liquid separator of the heat exchanger.

An electric power converter includes a semiconductor module, an electronic component, a plurality of cooling tubes, a case, a main pressure member for pressing a stacked semiconductor section in a stacking direction, and a sub-pressure member for pressing a stacked component section in the stacking direction. The stacked semiconductor section and the stacked component section are stacked in line. A pressing force of the main pressure member is greater than a pressure pressing force of the sub-pressure member. The main pressure member is disposed at an end portion of the stacked component section far from the stacked semiconductor section. A supporting portion that supports the stacked semiconductor section from the stacked component section side is disposed in the case so as to prevent the pressing force of the main pressure member from acting on the stacked component section.

A heat exchanger, such as an indirect charge-air cooler for an internal combustion engine, may include a first duct system including a plurality of pipes, a second duct system, a collector including a base part and a box part, and at least two opposite side parts. The plurality of pipes may be arranged between the side parts, and the first duct system may be fluidically separated from the second duct system. The box part may bear against at least one of the side parts via a first contact surface. At least one frame part may be provided and coupled in a non-positively locking connection and/or a cohesive connection, for example by pressing and/or brazing, to a respective outer edge of the side parts, a respective outer edge of the base part, and/or a respect outer edge of the box part.

A metal heat transfer plate and heat pipe mounting structure includes a metal heat transfer plate and heat pipes embedded in the metal heat transfer plate in a flush manner. The metal heat transfer plate and heat pipe mounting method includes the steps of punching mounting slots in a metal heat transfer plate, processing each mounting slot into a respective flanged hole, reversely stamping each flanged hole to form top and bottom protruding flanges around each mounting slot, stamping each bottom protruding flange to create an insertion chamber, and press-fitting a flat heat pipe into each mounting slot and then stamping each top protruding flange into a respective deformed top protruding flange to wrap about one respective heat pipe and to keep each deformed top protruding flange flush with the top surface of the metal heat transfer plate and each heat pipe.

A heat exchanger tube inserting apparatus includes a roller conveyor section and a pushing section. The roller conveyor section includes a roller that advances the heat exchanger tube to thereby insert the heat exchanger tube into the insertion holes of the fins and to a first position by rotation of the roller. The pushing section pushes the heat exchanger tube, which has been moved to the first position by the roller conveyor section, to a second position located further inside than the first position.