Apparatus for drawing a pre-selectable quantity of liquid
First Claim
1. Apparatus for drawing a pre-selected quantity of liquid with an input device in which the quantity of liquid is presettable and with an electrically operated shut-off valve (12) further comprising:
- (a) an electrically adjustable flow-control valve (11), by which the flow rate delivered is continuously variable between a minimum value and a maximum value;
(b) a memory (5) in which a characteristic curve is memorized and which establishes a relationship between the quantity of liquid and the flow rate in such a way that as the quantity of liquid increases, the flow rate increases; and
(c) a control unit (4) which, according to the quantity of liquid pre-selected at the input device (1), reads the associated flow rate from the memory (5) and adjusts the flow-control valve (11) by corresponding electrical signals.
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Accused Products
Abstract
An apparatus for drawing a pre-selectable quantity of liquid, in particular a quantity of water, comprises an input device, at which the respectively desired quantity of liquid to be delivered automatically can be fed in. Located in the path of the liquid is an electrically variable flow-control valve, whereof the position is varied automatically according to the pre-selected quantity of liquid, corresponding to a characteristic curve stored in a memory: the flow rate is chosen to be all the greater, the greater the pre-selected quantity of liquid. Due to this it is ensured that very different quantities of liquid can be drawn in times which are practical for use.
150 Citations
14 Claims
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1. Apparatus for drawing a pre-selected quantity of liquid with an input device in which the quantity of liquid is presettable and with an electrically operated shut-off valve (12) further comprising:
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(a) an electrically adjustable flow-control valve (11), by which the flow rate delivered is continuously variable between a minimum value and a maximum value; (b) a memory (5) in which a characteristic curve is memorized and which establishes a relationship between the quantity of liquid and the flow rate in such a way that as the quantity of liquid increases, the flow rate increases; and (c) a control unit (4) which, according to the quantity of liquid pre-selected at the input device (1), reads the associated flow rate from the memory (5) and adjusts the flow-control valve (11) by corresponding electrical signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14)
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10. Apparatus according to claim 22 wherein the memory (5) is programmable by way of the input device (1).
Specification