US 2022/0177336 A1Published application

Mineralization cartridge and method for the operation thereof

AssigneeAQUIS WASSER-LUFT-SYSTEME GMBH.LINDAU, Zweigniederiassung Rebstein

InventorBERND HEITELE

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Abstract

The invention relates to a method for operating a water filter cartridge in a pipe, said water filter cartridge having a housing in the form of a pressure vessel, and an inlet and an outlet for water, characterized in that a main flow of water to which minerals are added is conducted through a main pipe inside the pressure vessel, and a dosing flow of concentrated salt solution is conducted through a dosing pipe, wherein the dosing pipe branches off from the main pipe and passes through a reservoir of constant volume and in which there is a concentrated salt solution consisting of sulphate salt, chloride salt and/or hydrogen carbonate salt, wherein the part of the dosing pipe extending from the reservoir leads into the main flow at a dosing point through a dosing opening with a constant flow cross-section, and wherein a resistance section which is situated upstream of the dosing point in the main flow is used to set the flow resistance in the main flow such that a pressure difference results between the main flow and the dosing flow and causes a volumetric flow rate of the dosing flow of salt solution which is substantially proportional to the main flow, through the dosing opening opening into the main flow.

Claims21

Dependent claims

1) A method for operating a mains-fitted water filter cartridge (1) having a housing (2) in the form of a pressure vessel, having an inlet (4) and having an outlet (5) for water, characterized in that

inside the pressure vessel a main flow (6.1) of water, to which minerals are added, is conducted through a main conduit (6)
and a dosing flow (7.1, 9.6) of concentrated salt solution (11) is conducted through a dosing conduit (7.2, 9.5, 9.7),
wherein the dosing conduit (7.2) branches off from the main conduit (6)
and leads through a storage vessel (9) of constant volume which contains a concentrated salt solution (11) formed of sulfate salt, chloride salt and/or hydrogencarbonate salt, wherein the part (9.7) of the dosing conduit departing from the storage vessel (9) opens into the main flow (6.1) at a dosing point (9.8) via a dosing opening (9.7;
13.2) having a constant flow cross section,
and wherein the flow resistance in the main flow (6.1) is set by means of a bed of a granular material (6.3) forming a resistance section (6.5) in the main flow (6.1), which is arranged upstream of the dosing point (9.8) in the direction of flow, and by means of a separate resistance section (7.5), in the form of a resistance layer (7.4) and/or of a capillary, in the dosing flow (7.1, 9.6), the feed of which section projects into the preceding bed, such that a differential pressure arises between the main flow (6.1) and the dosing flow (7.1, 9.6), this differential pressure
bringing about a volume flow of the dosing flow (7.1, 9.6) of the salt solution (11;
11′), through the dosing opening (9.7;
13.2) that opens into the main flow, which is substantially proportional to the main flow (6).

6 more elements

A mains-fitted water filter cartridge (1), comprising a housing (2) in the form of a pressure vessel, an inlet (4) and an outlet (5) for water, characterized in that

provided inside the pressure vessel are a main conduit (6) for conducting a main flow (6.1) of water, to which minerals are intended to be added,
and a dosing conduit (7.2, 9.5, 9.7) for conducting a dosing flow (7.1, 9.6) of concentrated salt solution (11),
wherein the dosing conduit (7.2, 9.5, 9.7) branches off from the main conduit (6)
and comprises a storage vessel (9) of constant volume which contains a salt solution (11) formed of sulfate salt, chloride salt and/or hydrogencarbonate salt, wherein the part (9.7) of the dosing conduit departing from the storage vessel (9)
is connected to the main flow (6.1) at a dosing point (9.8) via a dosing opening (9.7) having a constant flow cross section,
and wherein a bed of a granular material (6.3) forming a resistance section (6.5) is arranged in the main conduit (6) upstream of the dosing point (9.8) in the direction of flow, and a separate resistance section (7.5), in the form of a resistance layer (7.4) and/or of a capillary, is formed in the dosing flow (7.1, 9.6), the feed of which section projects into the preceding bed, and the flow resistance of which is set such that a differential pressure arises between the main flow (6.1) and the dosing flow (7.1), this differential pressure
bringing about a volume flow of the dosing flow (7) of the salt solution (11;
11′), through the dosing opening (9.8) that opens into the main flow (6), which is substantially proportional to the main flow (6).

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/439,778Filed 13 Mar 2020
Priority: DE 10 2019 106 690.515 Mar 2019
Published: 9 Jun 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C02F 1/688
Devices for dosing the additives: devices in which the water progressively dissolves a solid compound
B01D 37/025
Precoating the filter medium; Addition of filter aids to the liquid being filtered: additives incorporated in the filter
C02F 1/003
Processes for the treatment of water whereby the filtration technique is of importance: using household-type filters for producing potable water,…
C02F 1/686
Devices for dosing the additives: devices for dosing liquid additives