Electric heating device, especially for use in motor vehicles
AssigneeCatem GmbH & Co. KG
InventorsKlaus Beetz, Franz Bohlender
Life of this patent
Estimating the term…
Abstract
The present invention relates to an electric heating device which is especially conceived as a heating device for use in automotive vehicles. A plurality of heating elements, which are stacked so as to define a heating block, form together with a control device a structural unit. For this purpose, the control device is accommodated in a lateral bar of the frame by means of which the heating elements are held together. The air to be heated flows through the heating block as well as through windows provided in the lateral bar, past cooling elements which are respectively connected to the power-electronics components of the control device.
Claims12
An electric heating device, especially for use as a supplementary electric heating for motor vehicles, comprising:
- a plurality of heating elements (2) which are combined so as to form a heating block, said heating block being held in a rectangular frame (3, 4, 5), and
- a control device for controlling the heating elements (2), said control device defining a structural unit with the heating block held in the frame (3, 4, 5) and being provided with power transistors (11) which are arranged on a printed circuit board (10) and which are each provided with a cooling element (6), wherein
- the frame is defined by opposed longitudinal bars (3) and lateral bars (4, 5) arranged at right angles to said longitudinal bars (3),
- at least one of said lateral bars (5) is implemented as a box which is open on one side thereof and which is adapted to have the control device inserted therein,
- window openings (7) are provided in said lateral bar (5) and
- the cooling elements (6) of the power transistors (11) are located between respective opposed window openings (7) in the inserted condition of the control device.
Dependencies are inferred from the claim text.