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AssigneeWebasto AG Fahrzeugtechnik
InventorsJosef Riedmaier, Friedrich Widemann, Bernhard Schmatelka
Estimating the term…
A heater, in particular a vehicle auxiliary heater, of the type which operates with a liquid heat exchange medium and which is tied, for example, into the coolant circuit of a motor vehicle. In this heater, a mounting space for a control device is formed on a jacket-like outer casing, preferably a formation cast integrally as part of the outer casing. In this mounting space, circuit boards and printed circuit cards of the control device and sensor elements are mounted. Heat produced by semiconductor power components of the control device is removed to the surroundings by wall surfaces, in particular side walls, of the mounting space to which they are mounted. An electric connection device is provided that connects the inputs and outputs of the control device to the respective operational parts to be controlled and/or to the vehicle. This electric connection device includes a plug-like base, which preferably is formed of plastic, in which suitable electric conductor parts and contact parts, by which the control device is connected to operational parts to be controlled, are inserted. The control device and/or the electric connection device are designed so that parts projecting on the heater are avoided and a compact design of a heater is achieved.
A vehicle auxiliary heater, of the type which operates with a liquid heat exchange medium that flows through a space between a heat exchanger and a jacket-like outer casing and having a control device with inputs and outputs for controlling essential operating parts, said parts comprising at least one of a combustion air fan, ignition device, flame monitor, circulating device for the heat exchanger medium, and a solenoid valve of a fuel feed device, wherein a mounting space is formed directly on the jacket-like outer casing by an integrally cast formation of said outer casing in which printed circuit boards and sensor elements of said control device are mounted, said sensor elements comprising a temperature sensor for the heat exchange medium and a temperature safety device that are mounted on a bottom wall of the mounting space formed by the jacket-like outer casing.
Dependencies are inferred from the claim text.