A filter assembly comprises a housing defining an internal volume. A housing second end of the housing defines at least one female thread. A bowl is positioned at the housing second end The bowl comprises at least one bowl male thread structured to engage the at least one female thread of the housing so as to be coupled thereto.

A fluid filter assembly that is defined by a head portion, a base portion, and a filter tube housing that is captured therebetween. Each head portion includes more than one fluid inlet and more than one fluid outlet that are oriented relative to the respective head portion such that a plurality of fluid filter assemblies can be fluidly connected to one another to provide a desired degree of filtration of the fluid passed therethrough and such that the fluid filter assemblies can be oriented in a plurality of orientations relative to one another to provide a desired configuration of the fluid filter assembly.

A washing machine including a tub disposed inside a main body, a drainage pump configured to cause the received water inside the tub to flow to an outside of the washing machine through a drainage passage, a first filter, arrangeable along the drainage passage, to filter out foreign matter equal to or greater than predetermined size from the water, and a second filter, arrangeable along the drainage passage, to filter out foreign matter smaller than the predetermined size from the water. The drainage passage includes a first connecting hose to guide the water to flow from the tub to the first filter, a second connecting hose to guide the water to flow from the first filter to the second filter, and a drainage hose to guide the water to be discharged from the second filter to the outside of the washing machine.

The invention relates to a particle filter device (1) comprising: a fluid inlet (20), a fluid outlet (21), a first fluid flow circuit (31) comprising a first filter zone (2) having a first filter surface (S.sub.1), a second fluid flow circuit (32) comprising a second filter zone (3) having a second filter surface (S.sub.2) and a constriction (4) having a constant hydraulic resistance so that, in operation, a first portion of the fluid flows through the first flow circuit (31) by passing through the first filter zone (2) and a second portion of the fluid flows through the second flow circuit (32) by passing through the second filter zone (3) and the constriction (4), and the first filter zone (2) reaches a predetermined clogging condition before the second filter zone (3).

A washing machine including a tub disposed inside a main body, a drainage pump configured to cause the received water inside the tub to flow to an outside of the washing machine through a drainage passage, a first filter, arrangeable along the drainage passage, to filter out foreign matter equal to or greater than predetermined size from the water, and a second filter, arrangeable along the drainage passage, to filter out foreign matter smaller than the predetermined size from the water. The drainage passage includes a first connecting hose to guide the water to flow from the tub to the first filter, a second connecting hose to guide the water to flow from the first filter to the second filter, and a drainage hose to guide the water to be discharged from the second filter to the outside of the washing machine.

A filter for an aqueous solution, such as urea, of a diesel vehicle selective catalytic reduction system, includes a housing provided with an inlet and with an outlet and, inside which, is arranged a filter element. Variations in volume associated with changes in phase of the aqueous solution are detected and a switch which switches upon changes in phase of the aqueous solution signals the variations in volume.

A filter state estimation system is configured to estimate a state of a filter provided in a hydraulic circuit. The hydraulic circuit includes: the filter; a bypass channel circumventing the filter and through which an oil flows; and a valve provided in the bypass channel and configured to be opened and closed based on a differential pressure. The filter state estimation system includes: a sensor to detect that the valve is in an open state or in a closed state; a temperature sensor to detect a temperature of the oil; and a state estimating unit to estimate a state of the filter based on detection results detected by the sensor and the temperature sensor. The state estimating unit estimates the state of the filter based on the temperature of the oil which is detected by the temperature sensor when the sensor detects that the valve is in the open state.

The invention relates to a filter cartridge for insertion in a filter housing of a fluid filter, comprising: a filter material configured to filter a fluid flowing therethrough from a raw side to a clean side of the fluid filter during operation of the fluid filter; and a filter-cartridge-side radio module configured to move, during operation of the fluid filter, according to the pressure difference between the raw side and the clean side of the fluid filter, which pressure difference depends on the degree of contamination of the filter material, and to communicate, in order to ascertain the degree of contamination of the filter material, with a housing-side radio module of the fluid filter, the distance (A) of which housing-side radio module from the filter-cartridge-side radio module varies upon movement of the filter-cartridge-side radio module.

A water-dispensing device includes a source water intake, a spigot, and first and second filters arranged between the intake and the spigot. The first filter includes a first inlet and outlet. At least the first inlet includes a first electrically controlled valve for selectively placing the first filter in fluid communication with the intake. The second filter includes a second inlet and outlet. At least the second inlet includes a second electrically controlled valve for selectively placing the second filter in fluid communication with the intake. A controller is configured to: (i) receive a water selection from a user, and (ii) configure the first and second valves based on the selection such that water flowing from the intake toward the spigot will enter any of the first and second filters corresponding to the selection and bypass any of the first and second filters that do not correspond to the selection.

A fuel filter, in particular diesel fuel filter (10), of an internal combustion engine, in particular of a motor vehicle, and a heating sensor module (72) are described. A filter housing (14) has at least one inlet for the fuel to be cleaned and at least one outlet (32) for the cleaned fuel. A filter element (36) is arranged in the inner chamber (20) of the filter housing (14) in such a manner that it separates the at least one inlet from the at least one outlet (32). At least one heating unit (106) for heating the fuel, at least one temperature sensor (110) for detecting a temperature of the fuel and at least one water level sensor (90) for detecting a water level of water separated from the fuel in a water collection chamber (22) are integrated in the heating sensor module (72). At least one heating element (104) of the heating unit (106) is arranged in a heating chamber (102) which, with respect to a fuel flow (118, 120), is located outside the inner chamber (20) of the filter housing (14) between the inlet (74) and an unfiltered side of the filter element (36), and which, at the same time, is bounded by a module housing (80) of the heating sensor module (72).