A liquid-to-liquid heat exchanger adapted especially for use with an automotive vehicle radiator assembly for transferring heat from automatic power transmission fluid to the engine liquid coolant comprising a pair of cylindrical tubes adapted to be positioned in coaxial disposition within the engine radiator heater and a helical turbulator positioned within an annular space defined by the cylindrical tubes, said turbulator comprising a rolled strip with a channel cross-section, said strip being wound about the axis of the heat exchanger to form a continuous helical flow channel, thus increasing the turbulence in the field flow path for the transmission oil.
A turbulator for a liner cooling jacket includes a metal panel which is suitable to be coiled into a generally cylindrical shape so as to be placed in a relief area between an engine cylinder block and a cylinder liner. The relief area may be machined into either the block or the cylinder liner and the metal panel is formed with a pattern of protuberances shaped like corrugations. In one embodiment, the corrugations have a shape similar to a sine wave and are arranged in a plurality of generally parallel axial segments. The corrugation wave pattern of one segment may be the same as its adjacent segment or may be staggered by one corrugation which would mean one-half of a full wave cycle. The corrugation pattern in the turbulator panel may be created by any one of various stamping or forming operations and when placed between the cylinder liner and block, increases turbulence of the cooling liquid in order to enhance heat transfer.
A surrounding bead-type collar is pressed out from the pipe material or aat least one of two pipes forming a double-pipe heat exchanger. The radial height of the collars corresponds to the difference of the radii of the interior wall of the exterior pipe and of the exterior wall of the interior pipe. The collars form axial ends of an annular flow space of a completed heat exchanger. The thus constructed pipes with collars may be slid axially and thereby mounted on one another during manufacturing. Before this mounting operation, they are plated with a Nocolok fluxing agent and are subsequently soldered together in a heating step.
Water reservoir device for a radiator of an automobile, comprising a water reservoir (12) communicating with an external appended receptacle (14) which contains an oil exchanger (16), the inlet and discharge pipes (58) of this exchanger passing in a sealed manner through a wall (44) of the appended receptacle and serving for the fixation and maintenance of the oil exchanger in the appended receptacle.
A solar heating panel apparatus has a supporting base with a plurality of elongated heat exchanger members mounted to the base. Each heat exchanger is operatively connected to one end of an adjacent heat exchanger to provide a continuous path through the heat exchangers from a fluid input to a fluid output. Each heat exchanger has a hollow center core having a passageway running spirally around the center core and uses the center core as one wall of the spiralling passageway. The fluid flows through the spiralling passageway, and may flow through the center core, although the center core may also be used to enclose heating elements so that the solar panel can be used without benefit of a conventional hot water heater.
A self-contained portable unit for heating physiological fluids is disclosed. A heat exchanger is disposable to ensure sterility, and the heat exchanger is attached to a heating system by inserting it between opposed fluid connection elements. One of the fluid connection elements is movable to permit the heat exchanger to be installed and removed easily by inserting one end of the heat exchanger in one of the fluid connection units and moving the other fluid connection unit into contact with an opposite end of the heat exchanger. The heating fluid is heated by an electric heating element and is circulated by an electric pump.
