Abstract: An apparatus for catalytically decontaminating exhaust gases, preferably for motor vehicle engines, includes a metal carrier body having a plurality of corrugated, or smooth and corrugated, sheet metal layers. The sheet metal layers have smooth end segments overlapping one another and being disposed as an outer layer on the periphery of the metal carrier body. A jacket encompasses the metal carrier body. At least one weld seam may simultaneously connect the smooth end segments to one another and to the jacket. A mechanical retaining device may form-lockingly secure the metal carrier body in the axial direction in the jacket while engaging an end surface of the outer layer.

Abstract: A method for producing a honeycomb body includes the following steps: forming or winding a multi-layer hollow coil from at least one sheet-metal strip which has at least partial structuring; deforming the multi-layer hollow coil from the outside thereof towards the inside at at least three lines such that the at least one sheet-metal strip extends in loops between outer and inner reversal lines; and compacting the resulting deformed multi-layer structure about the inner reversal lines by rotationally intertwining the loops formed by the folded sheet-metal layers in a given direction.

Abstract: An exhaust gas catalytic converter, particularly for an internal combustion engine, includes a flow channel for carrying exhaust gas. A carrier body is disposed in the flow channel and has a structure through which exhaust gas can flow. The carrier body is formed of sheet-metal layers. At least some of the sheet-metal layers are at least partially structured. A catalytic coating is disposed in the carrier body. At least one separate heating element in addition to the structure, is adapted to the shape of one of the at least partially structured sheet-metal layers, is electrically insulated from the structure and is in close thermal contact with at least one of the coating and the sheet-metal layers, for electrically heating the carrier body externally. A method for producing an exhaust gas catalytic converter includes placing spaced-apart heating elements adapted to a shape of a corrosion-proof structured sheet-metal layer into the structured sheet-metal layer.

Abstract: An apparatus for catalytically decontaminating exhaust gases, preferably for motor vehicle engines, includes a metal carrier body having a plurality of corrugated, or smooth and corrugated, sheet metal layers. The sheet metal layers have smooth end segments overlapping one another and being disposed as an outer layer on the periphery of the metal carrier body. A jacket encompasses the metal carrier body. At least one weld seam may simultaneously connect the smooth end segments to one another and to the jacket. A mechanical retaining device may form-lockingly secure the metal carrier body in the axial direction in the jacket while engaging an end surface of the outer layer.

Abstract: A metal honeycomb body is disposed within a jacket member. At least partly structured sheet-metal layers are wrapped around one another and extend alternatingly back and forth in a curved, preferably involute, fashion between an outer annular region and an inner annular region of the honeycomb body. The sheet-metal layers form loops. At least three reversal lines are defined in the outer annular region, and the sheet-metal layers are intertwined about these reversal lines.

Abstract: An apparatus for catalytically decontaminating exhaust gases, preferably for motor vehicle engines, includes a metal carrier body having a plurality of corrugated, or smooth and corrugated, sheet metal layers. The sheet metal layers have smooth end segments overlapping one another and being disposed as an outer layer on the periphery of the metal carrier body. A jacket encompasses the metal carrier body. At least one weld seam may connect the smooth end segments to one another and to the jacket. A mechanical retaining device may form-lockingly secure the metal carrier body in the axial direction in the jacket while engaging an end surface of the outer layer.

Abstract: A metal support matrix for a catalytic reactor for exhaust emission control, in particular for internal combustion engines, which includes a plurality of stacks of sheet metal layers, each stack having a central end and a free end, and a jacket which encompasses the stacks. The central ends of the stacks contact each other and the free ends are mutually twisted around a point of symmetry so that the free ends contact the inner surface of the jacket. Prior to twisting, the stacks are in the shape of a rectangle, trapezoid or parallelogram.

Abstract: Catalytic converter carrier bodies have a jacket and adjacent layers of corrugated or smooth and corrugated metal foils wound or layered in the jacket. The metal foils contact each other and contact the jacket at connecting points, defining flow channels between the metal foils and between the metal foils and the jacket and defining brazing gaps at the connecting points. A method for brazing the carrier bodies includes initially dispersing powdered brazing material with a suitable particle size in a mixture of binder material and liquid. The flow channels are flooded with the liquid mixture for depositing the brazing material in at least some of the brazing gaps. Excess mixture is subsequently removed from the flow channels and the carrier body is then brazed.

Abstract: A process and an arrangement for producing a supporting body for a catalytic reactor is disclosed. In order to reduce thermal stress between the casing tube and the wound metal supporting body of an exhaust gas catalyst, the temperatures of which vary significantly during operation, it has been proposed to provide the ring-type composite of metal strips fastened in a casing tube with slots extending in longitudinal direction. This type of production results in high expenditures. The new process and arrangement of the invention provides that incisions are made directly into the metal strips before the winding or folding of the supporting body, so that a subsequent processing becomes superfluous. The thus produced supporting bodies have a plurality of incisions extending within the ring-type composite which can also prevent the buildup of thermal tensions or stress. The new supporting bodies are used for exhaust gas catalysts of motor vehicles.

Abstract: A carrier matrix wound of a carrier strip having undulations in its transverse direction has deflections of the carrier strip, said deflections being arranged in planes. During the winding process, the deflections are created by the insertion of deflection pins between the corresponding winding layers. The deflections pins, in this case, are inserted between the winding layers as a function of the desired cross-section of the carrier matrix so that after the winding process and after the removal of the deflection pins, the carrier matrix can be inserted into a sheath that has the desired cross-section of the carrier matrix. By combining several winding bodies of this type into one carrier matrix, arbitrary cross-sections of carrier matrices can be produced, particularly cross-sections having concave archings. During the making process, the deflection pins are fitted through the corresponding bores of two winding disks that are connected with one another in a torsionally fixed way.

Abstract: Disclosed is an evaporator, particularly for air conditioning installations in automotive vehicles, comprising an evaporator block including several evaporator tubes and coolant supply means. The coolant supply means comprise an expansion valve, a feed tube and a manifold from which the evaporator tubes extend. A calming line segment for the coolant is arranged within the manifold. A distributing space connected with the calming segment is located adjacent to the calming segment. Means are provided for deflecting the coolant between the calming segment and the distributor space.

Abstract: An arrangement is disclosed for joining the tubes of a heat exchanger core to a connecting box, wherein the tubes are fastened to the connecting box and sealed, said tubes being secured to the connecting box by means of a friction joint and at least one space being provided for each tube surrounding the end of the tube; each said space comprising a cavity bounded by the connecting box and the tube or a corresponding recess, and being filled and sealed with adhesive material.

Abstract: The invention concerns a heat exchanger comprising a heat exchanger block having a plurality of tubes and fins arranged transversely to the tubes, at least one tube plate and a water tank, both made of a synthetic plastic material. The tube plate has orifices to receive the ends of the tubes and the water tank is fastened in a water tight manner to the tube plate. In order to obtain a simple and reliable joint of the heat exchanger tubes with the tube plate and the water tank with the tube plate, the plastic tube plate is provided on one side with projections. The orifices are located in these projections and the ends of the tubes are mounted in these orifices by expansion in the radial direction or impression in the axial direction. Both the tube plate and the water tank are equipped with flat surfaces at their edges. These surfaces rest on each other and the tube plate is joined with the water tank by vibration welding on these surfaces.

Abstract: The invention relates to a method for joining tubular parts of a heat exchanger that are inserted into each other, as well as to a tool for practicing the method.

Abstract: A heat exchanger wherein a plurality of individual tubular parts are connected with each other is provided having a common pressure element for tube connections arranged in a plane. According to FIG. 1, a pressure platen 6 is present, which consists of a material harder than that of the external tubular part and is equipped with a number of orifices 7 corresponding to the number of tube connections. The pressure platen 6 surrounds the outer and inner tubular parts inserted in each other, and the diameter of the orifices 7 is smaller, at least in part, than the external diameter of the outer tubular part. According to the process for the manufacture of the heat exchanger, all of the tube connections are produced simultaneously by means of pressing on the pressure platen. Each of the tube connections is effected by reducing the cross section by means of plastic deformation of at least the outer, tubular part, whereby a press fit of the tubular part is obtained.

Abstract: Disclosed is a heat exchanger comprising a plurality of parallel tubes and a plurality of ribs transverse to the tubes, and at least one connecting tank into which the tubes open. To obtain with simple and cost effectively produced means a uniform distribution of the fluid flowing through the heat exchanger over the heat exchanger tubes, the connecting tank has a chamber with a circular cross section and in the connecting tank a distributor installation is arranged which comprises a helical profiled body having an approximately stellate cross section which sealingly abuts with its ribs against the wall of the chamber. The partitions form a plurality of helical channels with one open and one closed end. An orifice is provided in the area of each channel for the passage of the fluid from the connecting tank into the tubes of the heat exchanger.

Abstract: Disclosed is an evaporator comprising a connector member, a Venturi distributor connected to the connector member for receiving and distributing a coolant, wherein the Venturi distributor divides the coolant into a plurality of streams, a plurality of channels formed in a body which comprises an insert for the connector member for conducting the coolant streams from the Venturi distributor, the channels corresponding in number to the streams with each channel being positioned to receive one of the streams from the Venturi distributor, a plurality of evaporator pipes connected to the connector member in parallel flow arrangement, the pipes corresponding in number to the channels with each pipe being connected to one of the channels, thereby forming a continuous coolant flow path from the Venturi distributor via the channels to the evaporator pipes, and a collection chamber formed in the connector member for receiving the coolant from the pipes.

Abstract: Disclosed is an evaporator comprising a connector member, a Venturi distributor connected to the connector member for receiving and distributing a coolant, wherein the Venturi distributor divides the coolant into a plurality of streams, a plurality of channels formed in the connector member for conducting the coolant streams from the Venturi distributor, the channels corresponding in number to the streams with each channel being positioned to receive one of the streams from the Venturi distributor, a plurality of evaporator pipes connected to the connector member in parallel flow arrangement, the pipes corresponding in number to the channels with each pipe being connected to one of the channels, thereby forming a continuous coolant flow path from the Venturi distributor via the channels to the evaporator pipes, and a collection chamber formed in the connector member for receiving the coolant from the pipes.

Abstract: A support matrix for a catalytic reactor for scrubbing exhaust gases in internal combustion engines, made of high-temperature resistant steel made up of alternating steel panels, at least one of which is corrugated, and at least one of which is provided with projections or depressions interlocking with at least one adjacent steel panel.