Abstract: A side channel blower (1), in particular for supplying combustion air to the auxiliary heater (2) of a motor vehicle, has a body (3) axially connected to an impeller wheel (4). The blower body (3) has an inlet channel (5), an outlet channel (6), a curved side channel (8) at the axial connection side (7) with the impeller wheel for connecting the inlet channel to the outlet channel, and a separating piece (9) which form together the 360.degree. of the circumference of the axial connection side (7). The separating piece (9) is produced as a separate part, in particular as a casting. This is advantageous for the manufacture and for optimizing the noise level and aerodynamics of the blower.

Abstract: A side-channel fan (1), especially for feeding combustion air in a parking heater (2) of a motor vehicle, with a fan body part (3) in an axial connection to an impeller (4), wherein the fan body part (3) has an inlet channel (5) and an outlet channel (6) and, the axial connection side (7) of the impeller, a bent side channel (8) connecting the inlet channel to the outlet channel, and an interrupter (9), which together form the 360.degree. circumference of the axial connection side (7), and at least one of the openings connecting the side channel (8) to the inlet channel (5) and to the outlet channel (6) is provided with a cover (10) in the area of the axial connection side (7), characterized in that the entire surface of the cover (10) located opposite the axial connection side or surface of the impeller (4) is arranged deeper, i.e., at a distance (d), in relation to the axial connection side.

Abstract: A motor vehicle heater arrangement is provided, the arrangement being connected to a vehicle. The vehicle heater arrangement includes a heater with a heater housing and with at least one of an engine coolant medium circuit connection and a motor vehicle interior space heating system heating medium connection defining a heating/cooling medium feed line connection and heating/cooling medium return line connection and with a fuel feed line connection. A water protection device is provided with the heater housing disposed therein. The heater and the water protection device are fastenable on an underside of the vehicle bottom. One of the heater housing and the water protection device has integrated securing points for securing to the vehicle floor.

Abstract: In an evaporation burner with a combustion chamber (1) for a heater or the like with a peripheral boundary wall (29), a front boundary wall (6) and an air-supply nozzle (8) projecting coaxially into the combustion chamber (1) with radial air outlets (9) through the nozzle wall, a guiding device (32) for a whirling air supply is fitted at or upstream of the air supply nozzle (8) of the combustion chamber (1), in which said air supply nozzle has a diaphragm (10) for axial back-flow (R) of the exhaust gas or the air at the center of turbulence of the whirling air supply (L). In an axial extension of the combustion chamber may be fitted a coaxial flame pipe (20), which together with the peripheral boundary wall (2), may constitute a one-piece (deep-drawn) sheet-metal component and the rest of the combustion chamber may be a cast component.

Abstract: The invention relates to a vehicle heater which is independent of the engine, has a burner head (9) and a flame tube (8) and is surrounded by a heat exchanger casing (10) through which a heat transfer medium can flow. The heat exchanger casing has connections (A; B) for inflow and outflow of the heat exchanger medium, and regulating sensors (20; 20'; 22) arranged in the region of the connections are connected to a control device which regulates the operation of the vehicle heater in relation to the heat transfer medium temperature measured. The aim of the invention is also to have the alternative of the heat transfer medium being able to flow through the heat exchanger casing (10) in the opposite direction, the connections (A; B) for the inflow and the outflow of the heat transfer medium subsequently being interchanged, and the regulating values of the existing regulating sensors being adapted.

Abstract: The invention concerns a heating appliance which is protected against overheating in that the temperature increase during operation of the appliance is monitored. If the temperature increases too rapidly, the heating operation is stopped. According to the invention, temperature increase values are determined in a close chronological succession and/or a mean value is calculated in order to compensate signal noise from the temperature sensor.

Abstract: A combustion chamber of a burner for a vehicle heater or for thermal regeneration of an exhaust gas particle filter having a frontal boundary wall, a circumferential boundary wall, a connector for fitting a glow plug and a connector for conveying combustion air which projects from the frontal boundary wall into the combustion chamber and has at least combustion air outlets through the connector wall, in which the combustion chamber with the frontal boundary wall, the circumferential boundary wall, the glow plug connector and with or without the air supply connector takes the form of a one-piece precision-cast component.

Abstract: A fluid spray burner for a heater having a nozzle block which supports a spray nozzle and to which fuel can be fed from a fuel line via a fuel pump. A fuel pump is integrated in the burner housing, and in particular to a radial carrier plate thereof.

Abstract: In a heat exchanger in the shape of a pot, with a frontal connector for a burner or the like, a lateral water inlet in the base and a water outlet in the region of the frontal connector, water flows through both the base and the jacket of the pot during operation. The invention proposes the provision in the base of the pot of water conveying sections, especially in the form of sickle-shaped water guide channels and barriers to ensure a directional water flow, substantially covering the surface of the base of the pot, in order to ensure a uniform temperature distribution on the pot base without the formation of steam bubbles.

Abstract: A vaporizing combustion chamber for a heater running on liquid fuel, in particular a vehicle heater, in which inter alia two pipes disposed concentrically one inside the other form therebetween an annular chamber which is closed at a first end. At the second end, the annular chamber is open and leads into a flame diaphragm which projects radially inwards from the outer pipe and is located at a spacing in front of the inner pipe. At both its ends the inner pipe is substantially open and the opening at the second end is contracted by a concentric baffle edge of a baffle plate. In order to improve the emission values of the combustion chamber exhaust gas and reduce combustion noises both when the combustion chamber is disposed horizontally and when it is disposed vertically, the opening in the flame diaphragm is eccentric to the opening, in the inner pipe, formed by the baffle edge of the baffle plate.

Abstract: A device for feeding and igniting in particular gasoline as fuel for the vaporizing burner of a heater, in particular a vehicle heater, is disclosed. The fuel evaporated from a porous body is mixed with combustion air and burned in a combustion chamber of the heater after being initially ignited by a glow plug. In order to simplify the design and improve the efficiency of the device, the glow plug is mounted in a pipe insulated from the outer wall of the combustion chamber and is radially surrounded by porous tubular body that projects beyond the free end of the glow plug into the combustion chamber. Combustion air is supplied in the radial direction to the porous body in the area of the free end of the glow plug and fuel is supplied in the radial direction to the opposite end of the porous body. The part of the porous body located outside the combustion chamber acts as a distributor and temporary reservoir when fuel is supplied.

Abstract: A power regulating system make it possible to switch on a plurality of power stages with different air flow rates and different fuel flow rates on the burner of the heater. In addition, noise level is optimized, since the blower that maintains the air flow rate turns with a constant output and only the fuel flow rate is modified to regulate the heating power.

Abstract: An absorption/reflection exhaust muffler of multichamber design with an outer housing and two inner half shells, in which the exhaust gas duct is impressed or pressed in, and which form the inner partitions of the individual chambers. The two inner half shells are designed as a prefabricated, inner half shell system with a bent together edge section, which is pressed in into the outer housing. Compensation of expansion during thermal stresses between the inner half shells and the outer housing is possible as a result. The outer housing may optionally be an outer shell manufactured according to the winding technique, i.e., a wound outer jacket with two flat outer bottoms, or it may comprise two outer half shells manufactured according to the half shell technique.

Abstract: Air gap-insulated exhaust pipe (2) with a sliding fit (16) between two inner pipe sections (12, 14) in a middle area of the length of the exhaust pipe (2). A radial mounting (26) of the inner pipe (6) in the outer pipe (4) is provided in the area of a bend (20) or beyond the bend (20), which joins the leg (18) of the exhaust pipe (2) in which the sliding fit (16) is located. In terms of manufacturing technique, the radial mounting (26) may be prepared before or after the bending of the double-pipe arrangement. The sliding fit (16) may be prepared, even in the case of a straight exhaust pipe, manifold, or the like, by using a spacer sleeve (40) and joint calibration of the pipe ends of the inner pipe sections (12, 14), and the spacer sleeve burns off at the time the exhaust pipe is put into operation for the first time. As an alternative, the sliding fit (16) may also be prepared by polygon calibration and rotating the pipe ends by half the pitch of the polygon.

Abstract: A burner for a vehicle heater of a particle filter regenerator including a combustion air blower, a combustion chamber with a fuel evaporator, a fuel supply with a fuel metering pump by which the fuel is proportionately fed to the evaporator, a glow-plug to ignite a mixture of combustion air and vaporized fuel and a control device, in which the control device switches the flow-plug on to ignite the mixture, starts the fuel metering pump after a first period following the switch-on of the glow-plug and substantially simultaneously with the starting of the fuel metering pump or a second period thereafter initiates a gradual increase in the speed of the combustion gas blower from a standstill or low speed rotation.

Abstract: A fuel-operated heater, especially an auxiliary heater for a motor vehicle, with a fuel feed pump and/or with a combustion air fan, is provided with a combustion control circuit. The control circuit acts to maintain a predetermined air-to-fuel ratio at a constant value in the combustion chamber of the heater ("lambda value") by energizing the controllable fuel feed pump and/or the controllable combustion air fan.

Abstract: A suction for the combustion air of a heater, in particular a motor vehicle heater, has a variable cross-section of flow. The object of the invention is to improve the operation of the device that modifies the cross-section of flow and to allow it to be more rationally produced. In addition, it should allow the suction air to be filtered in association with said means without extending the axial length of the heater. For that purpose, the suction pipe is designed as an axially closed tube with radial openings whose cross-sections may be changed by a coaxial, rotary ring set on the outside of the pipe and provided with radial openings. A hood may be axially drawn over the ring on the housing of the heater. Suction air may be filtered in said hood, either by centrifugaton in spiral channels arranged in the hood or by using a ring-shaped filter through which the suction air flows in the radial direction.

Abstract: A vehicle heater with a burner, a fan for the combustion air to be fed to the burner, a heat exchanger for heating the engines's cooling water, which is circulated in a closed circuit, and with a control device. A basic housing is provided substantially in the form of one of a parallelepiped and a semicylinder with an essentially flat, continuous upper housing surface. The basic housing is axially divided into a first housing end section, which is located at a first end and accommodates the burner and the heat exchanger, a middle housing part containing the fan, as well as a second housing end section comprising the control device. The inlet and outlet connections of the heat exchanger as well as a connecting branch for fuel to be fed to the burner are located within the upper surface of the basic housing.

Abstract: In an arrangement of a vehicle auxiliary heater with an integrated regulating device in the region of the floor in the vehicle cab and a control unit remote from the auxiliary heater, e.g. in the region of the dashboard or on an inner wall of the vehicle, it is proposed that the control unit be operationally connected to the regulation device wirelessly via a bidirectional radio link in which use is made of an r.f. unit with a first r.f. module on the operating side with a transmission and reception section and a second r.f. module on the control device side with a second transmission and a reception section. This obviates the need for the complicated laying of prior art wired connections between the control unit and the regulating device of the auxiliary vehicle heater, making the heater particularly suitable for subsequent fitting in commercial vehicles.

Abstract: Four design variants of a full-flow burner for the thermal regeneration of a particle filter in an exhaust gas aftertreatment system of an internal combustion engine, especially a diesel engine, which is arranged fully in the tailpipe, especially in an expanded, straight coaxial tailpipe section, are suggested according to the present invention. As a result, the flow can enter a particle filter axially, which means simplified design and good temperature distribution. The full-flow burners are preheated by the heat of the exhaust gas of the engine during the start phase. The exhaust gas of the engine cools the burner surface during the phase of burner operation, so that thermal overload is avoided.