Motor vehicle electric heating device having angled off metal heating plates arranged to mutually abut one another at opposite ends
First Claim
1. An electric heating device for a motor vehicle, comprising:
- a frame;
a plurality of parallel heating elements assembled to form a block and fastened to said frame, each of said heating elements being formed from a pair of metal plates and a PTC element disposed between said metal plates; and
corrugation ribs in heat-conductive connection with the metal plates,wherein said metal plates include angled-off sections, essentially in a form of an L, connected to each other in a frictionally locking manner, andwherein said angled-off sections of said metal plates are arranged at opposite ends of said heating elements and are angled in opposite directions, a length (l) of said angled-off sections of said metal plates being dimensioned such that angled-off sections of one pair of metal plates are in mutual abutment with angled-off sections of respectively adjacent pairs of metal plates.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric heating device includes a plurality of heating elements which are assembled to form a block. Such a heating element is formed from two metal plates, with the interposition of PTC elements. In order to increase the heat transfer, the metal plates are provided with corrugation ribs. Each heating element includes a pair of metal plates which are angled off essentially in the form of an L such that the angled-off sections are connected in a frictionally locking manner to each other. The angled-off sections are arranged at opposite ends of the heating elements and angled in opposite directions, the length of the angled-off sections of the metal plates being dimensioned such that angled-off sections of one pair of metal plates are in mutual abutment with angled-off sections of respectively adjacent pairs of metal plates.
54 Citations
20 Claims
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1. An electric heating device for a motor vehicle, comprising:
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a frame; a plurality of parallel heating elements assembled to form a block and fastened to said frame, each of said heating elements being formed from a pair of metal plates and a PTC element disposed between said metal plates; and corrugation ribs in heat-conductive connection with the metal plates, wherein said metal plates include angled-off sections, essentially in a form of an L, connected to each other in a frictionally locking manner, and wherein said angled-off sections of said metal plates are arranged at opposite ends of said heating elements and are angled in opposite directions, a length (l) of said angled-off sections of said metal plates being dimensioned such that angled-off sections of one pair of metal plates are in mutual abutment with angled-off sections of respectively adjacent pairs of metal plates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electric heating device, comprising:
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a frame; a plurality of parallel metal plates fastened to said frame and arranged in pairs, wherein each pair has a first parallel metal plate which includes an angled-off section at a first end and a second parallel metal plate which includes an angled-off section at a second end which is opposite to the first end; and a heating element disposed between each pair of the parallel metal plates, wherein the angled-off sections at the first ends are angled in a first direction and are configured to be in mutual abutment with one another, and wherein the angled-off sections of the second ends are angled in a second direction and are configured to be in mutual abutment with one another. - View Dependent Claims (19, 20)
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Specification