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US 8,596,293 B2Granted
Water appliance having a flow control unit and a filter assembly
AssigneeKoninklijke Philips N.V.
InventorsFrans Mous, Sander De Jonge
Life of this patent
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Abstract
A water appliance including a water flow control unit for controlling a water flow. The control unit includes a flow restrictor and a leakage stop in serial fluid communication with the flow restrictor. The leakage stop cuts off the flow when a pressure difference between an inlet and an outlet of the flow restrictor is below a predetermined value.
Claims10
A water appliance comprising:
- a water flow control unit for controlling a water flow, the control unit including a flow restrictor, and a leakage stop in serial fluid communication with the flow restrictor, with the leakage stop including at least two positions, with a first one of the two positions configured to allow water flow through the leakage stop and a second one of the two positions configured to cut-off the flow when a pressure difference between an inlet and an outlet of the flow restrictor indicates a leakage limit of the flow by being below a predetermined value;
- a water filter;
- and a flow totalization unit configured to add up a volume of water that has flowed through the water filter, wherein the water filter is in fluid communication with the flow restrictor for limitation of the water flow to a maximum amount of water that flows in a given period of time through the water filter, the flow totalization unit has a minimal flow below which the flow totalization unit will not add up a volume of water that has flowed through the water filter and the minimal flow is the leakage limit.
A filter assembly for a water appliance having a filter, the filter assembly comprising a flow restrictor;
- a leakage stop in serial fluid communication with the flow restrictor, with the leakage stop including at least two positions, with a first one of the two positions configured to allow water flow through the leakage stop and a second one of the two positions configured to cut-off the water flow through the filter when a pressure difference between an inlet and an outlet of the flow restrictor indicates a leakage limit of the flow by being below a predetermined value;
- and a flow totalization unit configured to add up a volume of water that has flowed through the filter and having a minimal flow below which the flow totalization unit will not add up a volume of water that has flowed through the filter and the minimal flow is the leakage limit.
A water appliance comprising:
- a flow restrictor;
- a low flow detector in serial fluid communication with the flow restrictor, with the low flow detector configured to cut-off the flow when a pressure difference between an inlet and an outlet of the flow restrictor indicates a low flow limit of the flow by being below a predetermined value;
- a water filter in fluid communication with the flow restrictor for limitation of the water flow;
- and
- a flow totalization unit configured to add up a volume of water that has flowed through the water filter and having a minimal flow below which the flow totalization unit will not add up a volume of water that has flowed through the water filter and the minimal flow is the low flow limit.
2 more elements
Dependencies are inferred from the claim text.