Electric heating apparatus with housing
First Claim
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1. An electric heating apparatus comprising:
- a housing which has openings on elongate housing faces, and a layered structure including at least one PTC heating element, a radiator element, first and second contact sheets for power supply and a resilient element, the PTC heating element being arranged between the first and second contact sheets and the layered structure being kept clamped in the housing by the resilient element,wherein the first contact sheet is provided with a lacquer layer at the side facing the PTC heating element, and a space between the PTC heating element and the first contact sheet is sealed via lacquer pressed out of said space.
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Abstract
Electric heating apparatus and manufacturing method for an electric heating apparatus, wherein prefabricated constructional units are used. The prefabricated constructional units consist of PTC heating elements fastened to contact sheets by means of a lacquer. This simplifies production and enhances protection against corrosion.
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Citations
50 Claims
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1. An electric heating apparatus comprising:
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a housing which has openings on elongate housing faces, and a layered structure including at least one PTC heating element, a radiator element, first and second contact sheets for power supply and a resilient element, the PTC heating element being arranged between the first and second contact sheets and the layered structure being kept clamped in the housing by the resilient element, wherein the first contact sheet is provided with a lacquer layer at the side facing the PTC heating element, and a space between the PTC heating element and the first contact sheet is sealed via lacquer pressed out of said space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A constructional unit for an electric heating apparatus, comprising:
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a housing which has openings on elongate housing faces, and a layered structure including at least one PTC heating element, a radiator element, first and second contact sheets for power supply, and a resilient element, the PTC heating element being arranged between the first and second contact sheets and the layered structure being kept clamped in the housing by the resilient element, wherein the constructional unit is formed from the first contact sheet and a PTC heating element, the first contact sheet being provided with a lacquer layer at the side facing the PTC heating element, and a space between the PTC heating element and the first contact sheet being sealed via lacquer pressed out of said space. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A method for producing an electric heating apparatus that includes:
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a housing having two half-shells with openings on elongate faces of the housing, and a layered structure including at least one PTC heating element, a radiator element, first and second contact sheets for power supply, and a resilient element, the layered structure being kept clamped by the resilient element in the housing, the method comprising; fastening a PTC heating element to the first contact sheet via a lacquer, inserting the first contact sheet with the PTC heating element fastened thereto and the second contact sheets into a first half-shell of the housing, and attaching the second half-shell of the housing to the first half-shell. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An auxiliary electric heater for automotive vehicles, comprising:
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a housing which has elongate housing faces having openings formed therein, and a layered structure including at least one PTC heating element, a radiator element, first and second contact sheets, and a resilient element, the PTC heating element being arranged between the first and second contact sheets and the layered structure being clamped in the housing by the resilient element, wherein the first contact sheet is provided with a lacquer layer at a side thereof facing the PTC heating element, and wherein a space between the PTC heating element and the first contact sheet is sealed via lacquer pressed out of the space. - View Dependent Claims (48, 49, 50)
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Specification