Reduced pressure water filtration system
First Claim
1. A reduced pressure water filtration system comprising:
- an inlet valve;
a manifold having an inlet, a flow channel and an outlet, the flow channel comprising at least one filter connection; and
at least one cartridge filter comprising a housing, an enclosed filtration media and a filter connector, wherein the filter connector sealingly engages the filter connection to define a fluid circuit fluidly connecting the inlet and the outlet, wherein the inlet valve is configured to control flow to the inlet, and wherein the outlet is open to atmosphere in modes of operation when the inlet valve is open.
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Accused Products
Abstract
A reduced pressure water filtration system provides for water filtration at a pressure lower than line pressure while preventing exposure of the reduced pressure water filtration system to potentially damaging static pressures such that the system and components are exposed to significantly less water pressure. The reduced pressure water filtration system can comprise a distribution module, at least one filter element, a filtered water storage module and a control unit. The filtered water storage module and the control unit may or may not be physically connected with the distribution manifold and/or filter element. A downstream side of the reduced pressure water filtration system is vented to atmosphere such that closing an inlet valve to the reduced pressure water filtration system in a non-flow mode results in any static pressure being vented.
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Citations
23 Claims
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1. A reduced pressure water filtration system comprising:
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an inlet valve;
a manifold having an inlet, a flow channel and an outlet, the flow channel comprising at least one filter connection; and
at least one cartridge filter comprising a housing, an enclosed filtration media and a filter connector, wherein the filter connector sealingly engages the filter connection to define a fluid circuit fluidly connecting the inlet and the outlet, wherein the inlet valve is configured to control flow to the inlet, and wherein the outlet is open to atmosphere in modes of operation when the inlet valve is open. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for eliminating a static pressure condition within a water filtration system comprising:
venting a downstream side of the water filtration system to atmosphere such that a water flow pressure within the water filtration system is dissipated upon the closure of an upstream supply valve. - View Dependent Claims (18, 19, 20, 21)
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22. A reduced pressure water filtration system comprising:
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an inlet valve;
a manifold having an inlet, a flow channel and an outlet, the flow channel comprising at least one filter connection;
at least one cartridge filter comprising a housing, an enclosed filtration media and a filter connector, and a storage tank fluidly connected to the outlet;
wherein the filter connector sealingly engages the filter connection to define a fluid circuit fluidly connecting the inlet and the outlet, wherein the inlet valve is configured to control flow to the inlet, and wherein the outlet is open to atmosphere in modes of operation when the inlet valve is open.
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23. An appliance comprising a cooling compartment and a water filtration system, the water filtration system comprising:
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a manifold having an inlet, a flow channel and an outlet, the flow channel comprising at least one filter connection;
at least one cartridge filter comprising a housing, an enclosed filtration media and a filter connector;
a flow control valve operably connected to the manifold to control flow through the manifold; and
a removable fluid reservoir fluidly connected to the outlet and in thermal contact with the cooling compartment;
wherein the filter connector sealingly engages the filter connection to define a fluid circuit fluidly connecting the inlet and the outlet.
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Specification