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Water Filter Cartridge and Valve with Autobypass Feature

a technology of filter cartridge and valve, applied in the field of filters, can solve problems such as compromising the integrity of the seal

Inactive Publication Date: 2008-01-03
WHIRLPOOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]In an embodiment, the valve actuator is rotatable relative to the valve body, to selectively align the inlet passage portions of the valve body and valve actuator and simultaneously align the outlet passage portions of the valve body and valve actuator to permit communication between common passage portions, and to selectively displace the inlet passage portions of the valve body and valve actuator and simultaneously displace the outlet passage portions of the valve body and valve actuator to prevent communication between common passage portions.

Problems solved by technology

Sliding sealing surfaces allow for the seals to twist or move or to allow the surfaces or impurities to cause wear of the seal, potentially compromising the integrity of the seal.

Method used

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  • Water Filter Cartridge and Valve with Autobypass Feature
  • Water Filter Cartridge and Valve with Autobypass Feature
  • Water Filter Cartridge and Valve with Autobypass Feature

Examples

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Embodiment Construction

[0042]As schematically illustrated in FIG. 1, the present invention provides a water filter cartridge system 30, shown in isolation in FIG. 2, which may find particular utility in a water dispensing system 32, such as found in a refrigeration appliance 34. The present invention also has utility in other appliances and environments and for filtering liquids other than water. For purposes of disclosing an embodiment of the invention, it will be disclosed in the environment of a water dispensing system 32 in a domestic refrigerator 34 where the water is dispensed at a door 36 of the refrigerator. The water is supplied via a water line 38 plumbed into a building supply, and passes through a cabinet 40 of the refrigerator 34, and into the refrigerator door 36 at a hinge 42 for the door. The water line 38 in the door 36 is connected to the water filter cartridge system 30, and then a connecting water line 44 leads up to a water dispenser 46 accessible from an outside of the door. The wate...

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Abstract

A liquid filter cartridge system includes a housing, a valve body, a valve actuator, a filter, an inlet passage having a portion extending through each of the valve body and the valve actuator and into the filter, and an outlet passage having a portion leading out of the filter, and extending through each of the valve actuator and the valve body. An interface is located between the inlet passage portions in the valve actuator and the filter and an interface is located between the outlet passage portions in the valve actuator and the filter. The inlet passage interface and the outlet passage interface may lie in the same plane as each other. They may each comprise a face seal comprising an axial seal between the valve actuator and the filter. They may each comprise a seal between the valve actuator and the filter, wherein the two seals are sealed via compression and not via sliding contact.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to filters for water and other liquids.[0002]Filters are widely used to separate impurities and solids from liquids in a variety of applications. For example, filters are used in water lines to provide water in which dissolved minerals and other particles may be removed. Filters are also used in lubrication and fuel lines to remove metals and other solids from the lubricant or fuel.[0003]Because the filters have a relatively short lifetime, compared to the equipment they are used in association with, such as water dispensers, etc., the filters are arranged to be removed and replaced from time to time. The removal and replacement feature requires that there be an interface between the filter and the remainder of the liquid system which typically requires a seal at the interface, in that generally the liquid moving through the filter is at a pressure elevated above ambient pressure.[0004]In some systems, removal of the fil...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01D21/30B01D63/00F16K31/12
CPCB01D35/147C02F9/005B01D2201/302C02F9/20
Inventor MITCHELL, ALAN J.
Owner WHIRLPOOL CORP
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