Electric heater for hair care equipment - has two PTC heating elements with different switching temperatures and different resistances

The two elements (10, 20) with positive coefft. of resistance (PTC) are connected in series. The first element (10) has a higher switching temp. and a much lower electrical resistance than the second element. It takes over the main part of the heating in the warm-up phase. Thermal coupling to the se...

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Bibliographische Detailangaben
1. Verfasser:	HELBIG, GUENTER, 6082 MOERFELDEN-WALLDORF, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HAIRDRESSING OR SHAVING EQUIPMENT HAND OR TRAVELLING ARTICLES HUMAN NECESSITIES MANICURING OR OTHER COSMETIC TREATMENT
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Beschreibung
Zusammenfassung:	The two elements (10, 20) with positive coefft. of resistance (PTC) are connected in series. The first element (10) has a higher switching temp. and a much lower electrical resistance than the second element. It takes over the main part of the heating in the warm-up phase. Thermal coupling to the second element warms this rapidly to its switching temp. to take over the maintainance of the working temp. The second element is split into two parallel elements (22,24) to straddle the first element and generate a more rapid heating effect. Indicator lamps show the state of the heater, i.e. warm-up or operating temp. USE/ADVANTAGE - Rapid rise to operating temp. Hair driers, electric curlers, hot plate for coffee machines etc.