Abstract: Provided is an L-type turn-fin tube including a turn-fin which may provide excellent adhesiveness even with a tube having a small diameter, and a turn-fin type heat exchanger using the L-type turn-fin tube. The L-type turn-fin tube includes the tube and the turn-fin. A refrigerant moves in the tube. The turn-fin includes a base portion that is formed on one side of a bent portion obtained when a part of a groove portion recessed in a longitudinal direction is bent in the longitudinal direction, and a fin portion that is formed on the other side of the bent portion, wherein the base portion is spirally wound around an outer surface of the tube.

Abstract: Provided is a filler metal alloy composition capable of improving appearance of a welded zone and fluidity, penetration, etc., of an inexpensive filler metal by minimizing a content of silver (Ag) and adding tin (Sn) and silicon (Si) components. The filler metal alloy composition, brazed to a joint between parent metals to stably join the parent metals formed of the same material or different materials, is characterized in that the composition comprises silver (Ag), copper (Cu), zinc (Zn), tin (Sn), silicon (Si), and other unavoidable impurities.

Abstract: Provided is a suction pipe assembly with improved heat conductivity and a manufacturing method thereof. The suction pipe assembly includes a suction pipe, a capillary, a heat transmission pipe, and an adhesive agent. The suction pipe is disposed between a compressor and an evaporator and guides a refrigerant ejected from the evaporator to the compressor in a cooling system executing cooling by circulating the refrigerant and including the compressor, the condenser and the evaporator. The capillary is disposed between the condenser and the evaporator and guides the refrigerant ejected from the condenser to the evaporator. The heat transmission pipe includes the capillary inside and a contact portion for widening a contact area to the suction pipe outside to tightly contact the suction pipe. The adhesive agent is interposed between an external surface of the suction pipe and the contact portion to connect the heat transmission pipe with the suction pipe.

Abstract: Disclosed is a steel tube with superior corrosion-resistance treated with plating and a manufacturing method of the same. The manufacturing method of the steel tube includes the steps of: preheating a steel tube formed through a milling process; maintaining the temperature of the preheated steel tube above a predetermined temperature, and creating a reduction atmosphere; melting an Al—Zn alloy containing 55 wt % of aluminum and 43.4-44.9 wt. % of zinc, and plating the molten alloy over the surface of the steel tube; cooling the steel tube; and coating the surface of the steel tube with a resin.

Abstract: An apparatus and method for manufacturing a steel tube are provided. The apparatus includes: a tube-forming device for forming a steel plate into a steel tube; a heat treatment device connected in-line to the tube-forming device to heat the steel tube to a high temperature; a pre-treatment device for annealing the steel tube and providing a reduction atmosphere; and a plating device including a pot for storing a SeAHLume alloy composed of aluminum and zinc in a molten state, a level block selectively inserted into the molten alloy to adjust a level of the molten alloy, and a plating part into which the molten alloy flows in response to insertion of the level block and through which the steel tube passes substantially vertically. Therefore, it is possible to manufacture a steel tube having a plated surface to improve its corrosion-resistance.

Abstract: A heat exchanger (102) for use in a refrigeration unit (101), comprising a metal plate (201) and a metal tube (202) for containing refrigerant (203). The metal plate (201) has a first face (204) and a second face (205), and the tube (202) is attached to said first face (204) of the metal plate by a plurality of spot welds (405,406). The spot welds are laser spot welds and said welds extend through only a portion of the thickness of the plate (201), such that the second face (205) of the plate is undisturbed by the welds.

Abstract: Disclosed herein is a turn-fin condenser. The turn-fin condenser employs a turn-fin tube adhesively wound in a spiral shape around an outer surface of the tube in which refrigerant flows. The condenser comprises a coil type turn-fin tube 10 wound in a coil shape and fixed by inner and outer brackets 20 and 30 surrounding an outer peripheral surface of the coil type turn-fin tube, a motor 40 positioned in an inner space formed by the coil type turn-fin tube 10, a blowing fan 50 for taking ambient air in the coil type turn-fin tube 10 after being driven by the motor 40, and a tube wall 80 spirally wound with tube 11 extending out of the inner and outer brackets 20 and 30 at the rear side of the coil type turn-fin tube 10. The turn-fin condenser is easily manufactured and allows a greater quantity of air contact with turn-fins, thereby enhancing heat exchange efficiency.

Abstract: A heat exchanger cooling fin (401), for use in a fluid flow environment, comprising a fin plate (402) having a series of substantially mutually parallel louvres (403), each louvre (403) having a convex curved surface (404) facing in the opposite direction to each adjacent louvre (403), said series of louvres defining a nominal fluid flow path along the series over said convex curved surface (404) of each louvre (403).

Abstract: Disclosed herein is a turn-fin condenser. The turn-fin condenser employs a turn-fin tube adhesively wound in a spiral shape around an outer surface of the tube in which refrigerant flows. The condenser comprises a coil type turn-fin tube 10 wound in a coil shape and fixed by inner and outer brackets 20 and 30 surrounding an outer peripheral surface of the coil type turn-fin tube, a motor 40 positioned in an inner space formed by the coil type turn-fin tube 10, a blowing fan 50 for taking ambient air in the coil type turn-fin tube 10 after being driven by the motor 40, and a tube wall 80 spirally wound with tube 11 extending out of the inner and outer brackets 20 and 30 at the rear side of the coil type turn-fin tube 10.

Abstract: An air pollution control assembly for treating flue gas streams containing acid gases. The assembly is comprised of an evaporative cooler assembly or a spray dryer gas distribution system. The assembly further has a reagent injection venturi assembly and a baghouse assembly. The baghouse assembly includes a filter cake management system which is automatically activated with respect to time and the pressure differential across the filter bags.

Abstract: A method for building a serpentine heat exchanger, particularly a condenser for refrigerating circuits being profiled in such a way to present from a lateral side view and relative to at least one part of its length an inclination the direction of which is suddenly or progressively inverted at least once relative to a plane which is substantially parallel to one of the directions defined by the extension of the exchanger (3), in particular relative to a plane substantially parallel to the principal direction of a flow of air in which the exchanger (3) is located, and in special manner relative to a substantially vertical or substantially horizontal plane. According to the invention, the method comprises the following steps: a) the construction at least of the serpentine or of the complete exchanger in a flat configuration; b) the bending and/or moulding, or deforming of the flat serpentine or of the flat complete exchanger in a way to assume the desired inclinations.

Abstract: A quick connector coupling comprises a hollow connector body and a male tube received and secured in the connector body. The male tube has a radially enlarged upset. A retainer is disposed in the connector body and has an inner base ring through which the male tube extends. The retainer also has compressive members which abut a shoulder formed in the connector body to secure the retainer in the connector body. The compressive members extend towards the base ring and terminate before reaching the base ring to define a space between the compressive members and the base ring. The upset is captured in this space thereby securing the male tube in the connector body. A chamfer is formed in the base ring to provide tolerance for a wider band of male tube dimensions.

Abstract: A tube assembly for an auxiliary heating and air conditioning system includes an inner tube extending longitudinally, an outer tube extending longitudinally and disposed over the inner tube, the outer tube including a plurality of ribs for locating the inner tube approximately concentric to the outer tube, at least one connector tube, and at least one connector interconnecting the at least one connector tube and the outer tube to allow fluid flow between the inner tube and the outer tube.

Abstract: A multi-wall tube and a method for making the multi-wall metal tube. In the process, a preformed tube is used as an inner core. A metal strip, coated with binding metal, is longitudinally wrapped around the core tube. The assemblage is then heated to the brazing temperature of the binding metal whereby all layers become integral to form the finished multi-wall tube.

Abstract: A quick connector for forming a joint in a fluid line consists of a female connector body having a bore which receives a male member. A sleeve surrounds and is secured on the male member in close fitting relation with the male member and with the female connector body. A retainer extends between the sleeve and a radial face formed in the connector body to secure the male member in the connector body. A secondary retainer provides enhanced retention capability. An optional plug may be positioned in the bore entrance to prevent introduction of external contaminants.

Abstract: A multi-layer tubing for use in fluid transport applications. The tubing is suitable for conveying fluids containing hydrocarbons. The tubing comprises an extrudable adhesive layer of multi-phase polymer blends or alloys which is coextruded around a permeation-resistant layer of fluoropolymer. An outer layer of foamed polyamide is coextruded around the adhesive layer. The adhesive layer of polymer blends or alloys has a multi-phase morphology wherein one phase is miscible with the fluoropolymer for forming the permeation-resistant layer and another phase is miscible with the polyamide for forming the foamed outer layer.

Abstract: A coated metal tubing arrangement comprises a metal tube. An inner layer of a first polymeric material is bonded to the tube to provide corrosion protection. The first polymeric material has a high crystallinity, a dampening factor of less than 0.05, and a flexural modulus of at least 100 MPa. An outer layer of a second polymeric material is extruded around the inner layer to absorb impact energies and to eliminate mechanical vibrations and acoustic noises. The second polymeric material has a dampening factor of at least 0.05 and a flexural modulus of less than 50 MPa. The second polymeric material is a multi-phase polymer having at least one polymer component with a glass-transition temperature below room temperature.

Abstract: A multi-layer tubing assembly for use in fuel-line applications. An extruded innermost semi-conductive layer of ethylene tetrafluoroethylene has a surface resistivity in the range of 10.sup.1 to 10.sup.6 ohm/sq. An inner permeation-resistant layer of soft ethylene tetrafluoroethylene is coextruded around the innermost layer at temperatures below 600 degrees Fahrenheit. An adhesive layer of polymer blend coextruded around the inner layer has a multi-phase morphology wherein one phase is miscible with ethylene tetrafluoroethylene and another phase is miscible with polyamide. An outer layer of nylon 12 is coextruded around the adhesive layer.

Abstract: A multi-layer tubing assembly for use in fuel-line applications. An extruded innermost semi-conductive layer of a fluoroplastic has a surface resistivity in the range of 10.sup.1 to 10.sup.6 ohm/sq. An inner permeation-resistant layer of a fluoroplastic is coextruded around the innermost layer at temperatures below 600 degrees Fahrenheit. An adhesive layer of polymer blend coextruded around the inner layer has a multiphase morphology wherein one phase is miscible with the fluoroplastic and another phase is miscible with a rubber-like multiphase polymer. A cover layer of the rubber-like multiphase polymer is coextruded around the adhesive layer.