Method and apparatus for preparing a beverage
First Claim
1. An apparatus for preparing a beverage, comprising:
- at least one chamber receiving a flavor-imparting substance;
an apparatus part displaceable relative to said at least one chamber;
an electromotor receiving input power and having a driven shaft coupled to said apparatus part, said driven shaft displaces said apparatus part relative to said at least one chamber;
means for detecting a position of said apparatus part relative to said at least one chamber;
a sensor coupled to said driven shaft; and
,a control device having a signal input receiving a signal produced by said sensor, wherein said control device controls the power input of said electromotor in dependence on said sensor signal.
1 Assignment
0 Petitions
Accused Products
Abstract
There is described an apparatus for preparing a beverage, in particular coffee, of the type wherein an electric motor drives a piston in a filling chamber. In accordance with the invention, the motor power is controlled with a closed loop control, so that the rotational speed can be held constant and the attainment of an end position of the piston can be detected from the increase of the motor power required, without requiring elements mounted on parts which are to be cleaned regularly.
Preferably, the apparatus is adapted to slightly press the coffee powder by means of the piston, and to slightly squeeze out the residual dregs, after the coffee-making process has ended, by means of the piston.
36 Citations
9 Claims
-
1. An apparatus for preparing a beverage, comprising:
-
at least one chamber receiving a flavor-imparting substance; an apparatus part displaceable relative to said at least one chamber; an electromotor receiving input power and having a driven shaft coupled to said apparatus part, said driven shaft displaces said apparatus part relative to said at least one chamber; means for detecting a position of said apparatus part relative to said at least one chamber; a sensor coupled to said driven shaft; and
,a control device having a signal input receiving a signal produced by said sensor, wherein said control device controls the power input of said electromotor in dependence on said sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification