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 flat heat exchanger fin includes a body having arrays of louver groups formed therein. Each array includes four louver groups. The first and second louver groups are disposed over a respective pipe, with the second louver group disposed behind the first louver group. The third and fourth louver groups are disposed beneath a respective pipe, with the fourth louver group disposed behind the third louver group. Each louver group includes a plurality of louvers which form slits through the body. The slits extend transversely relative to the air flow direction and generally radially with respect to the respective pipe. Each louver group includes a proximate edge facing a respective pipe, and a remote edge facing away from the pipe. The remote edge is spaced from the respective pipe by a substantially constant separation distance. Dew-draining ridges are formed in the fin above, below, in front of, and behind respective pipes.

Abstract: A heat exchanger includes parallel fins and coolant-conducting tubes extending perpendicularly therethrough. There are three rows of the tubes, the three rows disposed in first, second and third sections, respectively, of the fin. The three fin sections are arranged sequentially from an upstream side to a downstream side of the fin, whereby the first section defines the upstream side, the third section defines the downstream side, and the second section is situated intermediate the first and third sections. The second and third sections have slits formed therein, whereas the first section is slit-free. The number of slits in the second section is from 50 to 80 percent of the number of slits in the third section, so that the air flow resistance is highest in the third section where the differential between air temperature and tube temperature is smallest.

Abstract: A heat exchanger includes parallel vertical fins through which horizontal heat exchanger tubes project. Each fin possesses groups of louver patterns, each group arranged between two vertically adjacent tubes. Each group of louver patterns is formed by first, second, third and fourth louver patterns arranged generally radially with respect to an adjacent tube. The louver patterns provide slits in the fin through which air can flow. The orientation of the louver patterns is such that a minimum vertical distance between vertically adjacent ones of the groups is shorter than an outer radius of a respective tube.

Abstract: The present invention relates to a heat exchanger of an air conditioner having a plurality of flat fins, each arranged in parallel at a predetermined interval to allow fluid to flow thereamong and a plurality of heat transfer pipes insertedly arranged in perpendicular patterns to the plurality of the flat fins to allow the fluid to internally flow, the heat exchanger comprising a plurality of louvered grid groups symmetrically opened in a forward and a reverse flowing direction of air current and radially disposed to encompass an upper and a lower side of the heat transfer pipes, so that the air current flowing though the plurality of flat fins can become turbulent and mixed around the heat transfer pipes to thereby reduce a cavitation region generating at the back of the plurality of heat transfer pipes and concurrently to increase a heat transfer efficiency, the heat exchanger further having an advantage in that a bead part is bent toward an inner side of the flat fin so as to be centrally and perpendicular

Abstract: A heat exchanger for an air conditioner comprises parallel flat fins for conducting air flows therebetween, and parallel tubes passing perpendicularly through the flat fins for conducting heat exchanging fluid. Each fin includes vertical beads disposed above, below, in front of and behind the tubes for draining condensed water.

Abstract: A heat exchanger for an air conditioner having a plurality of parallel heat exchanging tubes passing through flat fins perpendicular thereto, the flat fins being arranged in parallel to each other at predetermined intervals, and each heat exchanging tube having fluids flowing inside therethrough, the heat exchanger comprising a plurality of louvers radially arranged around the tube, each louver being opened in flow direction of the air currents, such that the air currents flowing into the front and rear surfaces is turbulent around the tube, and first and second beads formed, respectively, before and behind the heat exchanging tubes in flow direction of the air currents, thereby enlarging a whole surface area of the flat fins, and reinforcing the flat fins, by which there is provided the turbulence and mixture of the air currents, further improving the heat transfer effect and reducing the air dead region around the heat exchanging tube.

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: An improved louvered fin heat exchanger having plural fins arranged in substantially parallel, closely spaced relation and a plurality of heat transfer tubes passing through aligned openings in the fins is disclosed. Each fin includes a plurality of first and second louvers which intersect a nominal plane of the fin at respective first and second angles such that the first louvers are in diverging relationship with the second louvers on one side of the fin and in converging relationship with the second louvers on an opposite side of the fin, thereby providing a bi-directional louver configuration. Each fin further includes a plurality of collars defining the respective fin openings. Each collar has a substantially cylindrical portion and two distinct base portions on one side of the fin which defines two distinct recesses on an opposite side of the fin.

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: The fin for a heat exchanger which consists essentially of a matrix of tubes and of fins disposed transversely to the latter, the fin having pass-through elements to receive tubes which are to be joined mechanically, while a first, preferably liquid medium flows through the tubes and the fin is acted on by a second, preferably gaseous medium. Multiple fins are positioned in their fin pitch by integral spacers, wherein the spacers are in the form of noses stamped out of the pass-through elements and distributed over the periphery of the latter.

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.

Abstract: A fin for use in a heat exchanger of the type comprising a plurality of fluid carrying tubes for transporting heat exchange fluid is disclosed. The fin includes a generally planar base 24 having a longitudinal axis generally perpendicular to the direction of air flowing entering the heat exchanger 10 and a transverse axis generally parallel to the direction of air flow. The axes define a main plane disposed at a predetermined angle (.theta.) relative to the direction of air flow entering the heat exchanger. The fin 22 further includes a plurality of apertures 30 for receiving tubes 20 therethrough and a plurality of louvres 32 disposed on the base 24 extending generally parallel to the longitudinal axis of the base. The angle .theta. can be between 140 and 175 degrees to the direction of air flow entering the heat exchanger.