Abstract: The invention relates to a system for reacting fuel and air to a reformate. Said system comprises a reformer including a reaction chamber, a nozzle for supply a fuel/air mixture to the reaction chamber, at least one supply line for supplying fuel to the nozzle and at least one entrance channel for supplying air to the nozzle. According to the invention, the nozzle comprises a swirl chamber into which the at least one supply line for supplying fuel runs in a substantially axial/central manner and the at least one entrance channel runs in a substantially tangential manner and from which a nozzle outlet exits. The swirl chamber comprises a narrowing spiral channel into which the entrance channel for the gaseous medium runs, and a space axially contiguous thereto in the direction toward the nozzle outlet, into which the supply line for supplying fuel runs and from which the nozzle outlet exits.

Abstract: An auxiliary heater suitable for mobile applications and provided with a burner and a cup-shaped heat exchanger (10) which has a hollow cylindrical wall section (26, 48) with a first end area (16) facing the burner, a bottom section (24, 46) facing away from the burner, a heat transfer medium inlet (18), and a heat transfer medium outlet (20), by which, in operation of the auxiliary heater, a fluid heat transfer medium flows through the bottom section (24, 46) and the hollow cylindrical wall section (26, 48). In order to devise an auxiliary heater with has higher efficiency than known auxiliary heaters of the same size, both the heat transfer medium inlet (18) and heat transfer medium outlet (20) located on the first end area (16) of the heat exchanger (10).

Abstract: The invention relates to an air heating device with a hot air fan located in a housing to deliver hot air from an air inlet opening which is located on the face side via a heat exchanger to a hot air exit opening located on the opposite face.The object of the invention is to devise an air heating device which can always intake a sufficient amount of hot air regardless of its installation position without additional parts.This object is achieved by the fact that the housing near the face air inlet opening on its outside periphery on at least one side has additional air inlet openings.

Abstract: A hot-air heater, especially for vehicles, having a burner disposed in a housing, a fuel supply means for delivering fuel to the burner and a combustion-air fan for feeding combustion-air to said burner. Combustion-air, exhaust-gas and heating-air ducts are constructed within the housing. The housing has an opening for providing access to at least one space in which adjustable and/or replaceable parts are situated, the space being closable, relative to the outside of the heater, by means of a housing cover, and being connected to at least one of the combustion-air and exhaust-gas ducts. For reasons of safety, a combustion-air exhaust opening is provided on the pressure side of the combustion-air fan, which is blocked only when a housing cover for the housing access opening is in place, and being dimensioned in such a way that, when the combustion-air exhaust opening is not blocked, sufficient combustion-air is exhausted therethrough such that operation of the heater is not possible.

Abstract: Vehicle heater with a tubular combustion chamber and with a pot-shaped heat exchanger crimped over the combustion chamber leaving an annular space, said heat exchanger deflecting the combustion gases in an axial direction. In order to improve the efficiency of such a vehicle heater and to keep the manufacturing and material costs as low as possible, a coaxial, double-walled pot is provided in such a vehicle heater, leaving an annular space between it and the heat exchanger, said pot having an opening in its bottom area and being connected at that point to the annular space between the combustion chamber and the heat exchanger in such fashion that the combustion gases are guided in the chamber between its inside wall and its outside wall and are from there conducted away by an exhaust pipe.

Abstract: A lateral-duct fan having a lateral duct approximately of the shape of a torus cut normally to its axis of symmetry, and having a coaxial impeller having axially-symmetrically lined-up blades at its front side in a ring-shaped recess that faces essentially opposite the lateral duct with an axial gap therebetween. In order to reduce the critical interdependence between the size of the axial gap and the output of the fan, and thus increase the tolerances during the adjustment of the axial gap, i.e., to improve the output values of the fan with the same axial gap, it is provided that the radius of at least one edge of the recess, measured at the front side of the impeller, is smaller than the radius of a closest edge of the lateral duct, measured at an inner surface of a housing in which the lateral duct is formed.

Abstract: A fan, especially for the conveyance of the combustion air in a motor vehicle heating system, provides for adjusting of its output, with an efficiency that is as high as possible, and little operating noise. The fan, which preferably is a ring-duct fan, has a by-pass duct connected in by-passing relationship to the exit of the fan, with the by-pass duct containing an adjustable throttling member. In accordance with a preferred embodiment, the by-pass duct leads back into the intake duct of the fan.

Abstract: Fuel feeding apparatus is provided for a vehicle heater of the type having a combustion air fan connected by a combustion air feed line to a heater combustion chamber. A venturi tube is arranged in the feed line downstream of the combustion air fan and a fuel feed line and fuel nozzle opens into the air feed line at the venturi tube. A diaphragm pump is provided which has a first chamber, a fuel supply line inlet and an outlet at the fuel feed line to the venturi tube and a second chamber communicated with the air feed line at a position spaced from the venturi tube. A check valve is provided in the fuel feed line and a closure valve is provided at the fuel supply line leading to the first chamber. Movement of the diaphragm in the pumping direction is controlled exclusively by a pressure difference at the venturi tube and at the air feed line upstream of the venturi tube, while the suction stroke is controlled by an electromagnet.