Abstract: A heat exchanger of the fin type with a forced air flow, comprising: a thermal exchange tube (10) having a plurality of mutually parallel rectilinear portions (11); and a plurality of flat fins (20), which are parallel to the direction of the forced air flow, spaced apart from each other and provided with openings (21) for the passage of said rectilinear portions (11), a pair of air flow deflectors (30) being provided downstream at least part of said rectilinear portions (11), each flat fin (20) having, from one of the faces thereof and laterally to the openings (21), alignments of fin projections (22) associated with respective fin windows (23) for the passage of the deflected forced air flow.

Abstract: A heat exchanger having a plurality of tubes for circulating a refrigerant fluid and a plurality of fins in heat exchange contact with the plurality of tubes. Each of the fins includes a plurality of aligned collars defining at least one row of longitudinally spaced apertures, the plurality of tubes extending through the apertures and engaged by the collars. A pair of reinforcing ribs extend longitudinally of the fin, one of the pair on each side of the at least one row of apertures. A plurality of longitudinally spaced flat portions, lying in a common plane, and extend transversely between the ribs, one of the flat portions circumscribing each of the collars. A plurality of central corrugated portions transversely spaced from the ribs, extend longitudinally, one of the corrugated portions lying between each two of the flat portions. At least two sets of longitudinally extending louvers are located transversely between the central corrugated portion and the ribs and longitudinally between the flat portions.

Abstract: A conductive fin for a heat exchanger includes an elongated fin member having two rows of tube receiving apertures extending through the fin member. The fin member includes two rows of raised members located on either side of a centerline bisecting the fin member so as to form a series of closely spaced pairs of raised members located between any two tube receiving apertures and being symmetrical about the centerline and defining two openings with one opening being larger than the other. Each of the raised members defines a pair of legs extending from the plane of the fin member and is positioned to channel air into the space between each respective pair of tube receiving apertures so as to increase the coefficient of heat transfer therebetween without increasing air pressure drop across the heat exchanger.

Abstract: A heat exchanger includes a plurality of parallel spaced-apart fins and refrigerant-conducting tubes extending perpendicularly therethrough in a zigzagged arrangement. Slits are formed in each fin wherein there is a pair of slits directly in front of each pipe, a pair of slits at an upper front portion of the pipe, a pair of slits at a lower front portion of the pipe, a pair of slits at an upper central portion of the pipe, a pair of slits at a lower central portion of the pipe, a pair of slits at an upper rear portion of the pipe, a pair of slits at a lower rear portion of the pipe, and a pair of slits directly behind the pipe. The two slits of each pair extend from opposite sides, respectively, of the fin without any space formed between the slits, whereby the slits form contiguous air-conducting passages.

Abstract: A heat exchanger structure is disclosed including: a plurality of heat exchange fins stacked at predetermined intervals for enhanced thermal conduction; heat transfer tubes perpendicularly penetrating the heat exchange fins so that coolant conveyed there through is heated or cooled; an intake side in which a plurality of slits are cut and raised from a reference surface of the fin in a central portion between the heat transfer tubes with angled edges so that air is directed to the heat transfer tube; and an outlet side having raised slits whose edges are disposed at a larger angle than the intake side, increasing the velocity of air flow passing through the periphery of the heat transfer tube to enhance heat exchange and thereby prevent the flow from being stagnated at the rear of the heat transfer tube.

Abstract: A fin tube heat exchanger includes a plurality of fin plates disposed in parallel with one another, spaced at regular intervals and adapted to allow air to flow therebetween, and a plurality of refrigerant tubes disposed in at least two rows, inserted into the fin plates in a perpendicular direction and being adapted to allow a fluid medium to pass therein. Each of the fin plates has a plurality of raised strips which extend in a direction perpendicular to a direction of air flow. A plurality of normal raised strips are formed on both sides of the fin plates in at least one row on an air flow outlet side. A plurality of low raised strips or embossings are formed on at least one side of the fin plates in other rows. The height of the low raised strips or embossings in the other rows are lower than the height of the normal raised strips in the at least one row.

Abstract: A fin for a heat exchanger is disclosed including tubes through which thermal fluid flows; first and second rectangular slits disposed in the fin sequentially from a central line connecting the centers of the tubes, both ends of the slits being in parallel with an air incoming direction; and a third slit having a predetermined plane angle at its outer end adjacent to the tubes in order to reduce vortex flow produced at the rear of the tubes.

Abstract: A heat exchanger for an air conditioner comprises parallel fins through which air flows. A pipe system is disposed in the air flow and conducts a fluid which exchanges heat with the air flow. The pipe system includes a plurality of pipe segments extending between adjacent ones of the fins. Each fin includes a row of flow disrupting elements disposed adjacent a respective pipe segment such that an upstream end of each row is situated forwardly of an upstream side of the respective pipe segment, and a downstream end of each row is situated rearwardly of a downstream side of the respective pipe segment. Situated in the row is a flow diverting member which transfers air flow from one side of the fin to the other.