Abstract:
A heat exchanger for a refrigerator contains a base plate, a conduit for a cooling agent, which is disposed such that the conduit is in heat-conducting contact with the base plate, and a layer of holding material. The layer of holding material adheres to the base plate and the conduit and is made of a bitumen composition. The heat exchanger is produced by stacking the base plate, the conduit, and a sheet made of the bitumen composition. The layer of holding material is formed from the sheet by heating and pressing the stack.
Abstract:
A condenser coil and a method of manufacturing thereof, with an extended heat transfer surface attached to a serpentine coil such that the assembly can be folded into a U-shape cross section to allow for cross flow of air through and around the condensing coil. In one embodiment, wires are attached to the serpentine coil in a preliminary stage of manufacture across a width of the coil along its length and the coil is wrapped into a U-shape. In a second embodiment, a planar flat plate is attached to a serpentine coil and the coil and flat plate are wrapped into a U-shape.
Abstract:
An apparatus for a heat exchanger includes first and second flat tubes, a corrugated fin which is connected to and between said flat tubes and which is subjected to an air flow passing across the heat exchanger. The corrugated fin has a plurality of vanes or gills disposed transverse to the air flow direction and a stiffening bead formed thereon between two of the plurality of gills. The stiffening bead is disposed transverse to the air flow direction.
Abstract:
A heat exchanger core comprises a pair of header plates, each of which having a plurality of openings therein, a plurality of oval cross-section heat exchanger tubes adapted to receive a fluid medium therethrough extending in generally spaced parallel relationship between the header plates, the ratio between the major diameter and the minor diameter of each of the tubes being from about 12/1 to about 18/1, each of the plurality of tubes being positioned and arranged such that the ends of each of the tubes are joined to corresponding openings in each of the header plates to form a plurality of tube-to-header joints, and a plurality of louvered serpentine heat transfer fin elements disposed between the header plates in a heat exchange relationship with the plurality of tubes.
Abstract:
In order to improve the transfer of heat within a heat exchanger one or more tubes are provided for a heat transporting medium, and are embedded by casting into a block of an aluminum alloy, or some other metal having high heat conducting capacity. The block is at its outward faces provided with surface-enlarging flanges, and is enclosed in a casing which defines a passage for a second heat transporting medium flowing around the block. A block can be prismatic or annular, and a number of blocks can be fitted within the same casing.
Abstract:
A heat exchanger having corrugated fins interposed between adjacent folds of a liquid tube, which corrugated fins severally contain in each of the holds thereof a louver having louver blades alternately projected from the base line of fin and having at least part of said louver blades so arranged that the states of inclination thereof relative to said base line of fin vary alternately.
Abstract:
Method and apparatus for manufacturing a heat exchanger element which comprises a metal tube secured to a metal sheet by metal which has been heated and cooled. Wrinkles in the sheet after the tube has been joined thereto are removed by stretching at least the tube by an amount sufficient to cause the length of the tube to be substantially equal to the length of the outboard edges of the tube. The sheet may also be stretched beyond its elastic limit at the time that the tube is stretched but should not be stretched more than 2.5%.
Abstract:
A heat exchanger for solar collector apparatuses comprises two metal layers (10, 11) abutting each other and at least one metal pipe (12) for a heat-carrying medium arranged between the layers. The metal layers are cold-welded together on either side of the pipe to form heat-conveying fins and the pipe is cold-welded to at least one of the metal layers. The exchanger has a greater total goods thickness at the pipe than at the fins to allow a comparatively high heat-carrying medium pressure. (FIG. 1). For manufacturing the heat exchanger two metal strips and a metal pipe are continuously fed between two rolls, of which at least one is provided with a groove corresponding to the pipe. The roll pressure is selected so that the metal strips and the metal pipe are subjected during cold rolling to a thickness reduction of at least 60% during the passage between the rolls, so that the strips and the pipe are cold-welded together.
Abstract:
Heat-exchanger elements of plastic each of which is preferably produced in one piece by extrusion and consists of a plurality of substantially parallel tubes which are integrally secured to one another by connecting webs. A plurality of such elements may be interconnected by headers so as to form a larger heating unit.
Abstract:
A modular heat exchange unit comprising at least one impervious tube conductively bonded to a layer of porous material. The layer of porous material has an outer surface which is contoured so as to cooperatively engage at least one other such modular unit when they are assembled in a heat exchanger. The modular unit is provided with at least one resilient sealing member attached to the surface of said layer of porous material. The sealing member resiliently engages the abutting surfaces of adjacent units so as to substantially reduce bypass of the heat exchange fluid in an assembled heat exchanger. The modular units may contain more than one impervious tube, and the tubes may extend beyond the layer of porous material. In other embodiments, the layer of porous material may be shaped to fit adjacent a tubular wall, the impervious tubes may extend to at least one surface of the unit, the sealing members may be hollow or the unit may have at least one fin.