Brüheinrichtung für eine Haushalts-Espressomaschine

The espresso coffee making machine has coffee grounds chamber through which pressurised hot water is pumped. An aperture in the wall of the chamber is normally above a sealing gasket, but becomes exposed to the pressure chamber beyond a pre-determined pressure by deformation of the assembled parts,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OPPERMANN, GUENTER, 63128 DIETZENBACH, DE, KLAWUHN, MANFRED, 60322 FRANKFURT, DE
Format:	Patent
Sprache:	ger
Schlagworte:	APPARATUS FOR MAKING BEVERAGES COFFEE MILLS DOMESTIC ARTICLES OR APPLIANCES FURNITURE HUMAN NECESSITIES KITCHEN EQUIPMENT SPICE MILLS SUCTION CLEANERS IN GENERAL
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Beschreibung
Zusammenfassung:	The espresso coffee making machine has coffee grounds chamber through which pressurised hot water is pumped. An aperture in the wall of the chamber is normally above a sealing gasket, but becomes exposed to the pressure chamber beyond a pre-determined pressure by deformation of the assembled parts, allowing escape of the excess pressure. The pressure chamber (6) contains ground coffee (7) and is partially sealed by a sealing ring (29) contained in a groove (28) in a piston (3). Heated water (25) is introduced through a pipe (22) by a motor (27) driven pump (23). Brewed coffee is delivered through the base (18) and a filter (13). A hole (35) is provided in the wall a small distance, b, above the sealing ring. If the pressure within the chamber exceeds a limiting value the piston (3) is urged upwards, due to distortion of the plastic housing parts, lifting the seal above the hole.