# US 6,850,850 B1 · Fluid filter flowmeter self-generating power source system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,850,850 B1 - Document ID: US6850850B1 - Status: Granted - Kind: B1 - Application number: 10/639,239 - Filed: 2003-08-11 - Granted: 2005-02-01 - Earliest claimed: 2003-08-11 - Assignees: Renau Corporation - Inventors: Karol Renau - Web page: https://patentgrep.com/patent/US6850850B1 ## CPC - B01D 35/143: Filter condition indicators - C02F 1/001: {Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00)} - C02F 2209/40: Liquid flow rate - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract A flowmeter for metering the volume of flow of a fluid through a filter, to enable the level of filter usage to be indicated. A preset level of metered fluid flow volume indicates a corresponding level of filter usage. The flowmeter is able to self-generate current responsive to the flow of the fluid therethrough. ## Claims ### Claim 1 A system for metering the volume of flow of a fluid through a filter, to enable the level of filter usage, to be indicated, wherein a preset level of metered fluid flow volume indicates a corresponding level of filter usage, and wherein, in the system, a source of the fluid is adapted to be connectable to the filter, to enable the fluid to flow through the filter and through the system, and wherein the system is adapted to self-generate current for the system responsive to the flow of the fluid therethrough, comprising: a flow volume processing element, for processing the volume of the flow of the fluid over time to determine the level of filter usage; a current-inducing element, for inducing current responsive to the flow of the fluid; a current-generating element, for generating current including electrical charge responsive to the current induced therein by the interaction thereof with the current-inducing element, so as to self-generate current responsive to the fluid flow and the interaction of the current-inducing element therewith; a storing element, for storing the electrical charge generated by the interaction of the current-inducing element and the current-generating element so as to charge the storing element, adapted to generate current from the electrical charge stored therein for activating the flow volume processing element; and a discharging element, for enabling the current in the flow volume processing clement to discharge therethrough; wherein, upon each interaction of the current-inducing element and the current-generating element, the metering system sequences through a metering cycle whereby the storing element charges, the current generated in the storing element activates the flow volume processing element such that the flow volume processing element starts up, operates, and calculates and stores the volume of fluid flow, and the current from the flow volume processing element discharges through the discharging element such that the flow volume processing element shuts down. ### Claim 2 (depends on 1) The system of claim 1, wherein the discharging element comprises a level indicating element for emitting light to indicate the level of filter usage as determined by the flow volume processing element, so as to indicate the need for filter replacement. ### Claim 3 (depends on 1) The system of claim 1, wherein the fluid comprises water. ### Claim 4 (depends on 1) The system of claim 1, wherein the system is compact in size. ### Claim 5 (depends on 1) The system of claim 1, wherein the flow volume processing element comprises a microprocessor. ### Claim 6 (depends on 1) The system of claim 1, wherein the flow volume processing element is further adapted to compare the determined level of filter usage to a preset level of filter usage. ### Claim 7 (depends on 1) The system of claim 1, wherein the flow volume processing element further comprises an electronically activating element, for enabling electronic activation of the flow volume processing element. ### Claim 8 (depends on 7) The system of claim 7, wherein the electronically activating element includes a diode and a resistor, connected to the current-generating element, the storing element, and the flow volume processing element. ### Claim 9 (depends on 1) The system of claim 1, wherein the current-inducing element comprises an impeller, which includes a rotor comprising a plurality of blades extending radially therein, adapted to be positionable transverse to the path of the flow of the fluid through the system such that the flow of fluid through the system generates rotation of the rotor in the impeller, and further including at least one magnet mounted in at least one blade thereof. ### Claim 10 (depends on 9) The system of claim 9, wherein the impeller magnet comprises a plurality of magnets, each mounted in one of the plurality of blades in the impeller. ### Claim 11 (depends on 10) The system of claim 10, wherein the plurality of magnets extend radially on the impeller rotor blades. ### Claim 12 (depends on 10) The system of claim 10, wherein the plurality of magnets comprise four magnets, and the plurality of blades in which each of the four magnets is mounted comprise four blades. ### Claim 13 (depends on 1) The system of claim 1, wherein the current-generating element comprises a coil. ### Claim 14 (depends on 1) The system of claim 1, wherein the storing element comprises a capacitor. ### Claim 15 (depends on 1) The system of claim 1, further including a non-volatile memory element, adapted to retain stored data when power is cut off. ### Claim 16 (depends on 2) The system of claim 2, wherein the level indicating element comprises a light-emitting diode. ### Claim 17 A system for metering the volume of flow of a fluid through a filter, to enable the level of filter usage to be indicated, wherein a preset level of metered fluid flow volume indicates a corresponding level of filter usage, and wherein, in the system, a source of the fluid is adapted to be connectable to the filter, to enable the fluid to flow through the filter and through the system, and wherein the system is adapted to self-generate current for the system responsive to the flow of the fluid therethrough, comprising: flow volume processing means, for processing the volume of the flow of the fluid over time to determine the level of filter usage; current-inducing means, for inducing current responsive to the flow of the fluid; current-generating means, for generating current including electrical charge responsive to the current induced therein by the interaction thereof with the current-inducing means, so as to self-generate current responsive to the fluid flow and the interaction of the current-inducing means therewith; storing means, for storing the electrical charge generated by the interaction of the current-inducing means and the current-generating means so as to charge the storing means, adapted to generate current from the electrical charge stored therein for activating the flow volume processing means; and discharging means, for enabling the current in the flow volume processing means to discharge therethrough; wherein, upon each interaction of the current-inducing means and the current-generating means, the metering system sequences through a metering cycle whereby the storing element charges, the current generated in the storing means activates the flow volume processing means such that the flow volume processing means starts up, operates, and calculates and stores the volume of fluid flow, and the current from the flow volume processing means discharges through the discharging means such that the flow volume processing means shuts down. ### Claim 18 A method of metering the volume of flow of a fluid through a filter, to enable the level of filter usage to be indicated, wherein a preset level of metered fluid flow volume indicates a corresponding level of filter usage, and wherein a source of the fluid is adapted to be connectable to the filter, to enable the fluid to flow through the filter and through the system, and wherein the system is adapted to self-generate current for the system responsive to the flow of the fluid therethrough, in a system which comprises a flow volume processing element, for processing the volume of the flow of the fluid over time to determine the level of filter usage, a current-inducing element, for inducing current responsive to the flow of the fluid, a current-generating element, for generating current including electrical charge responsive to the current induced therein by the interaction thereof with the current-inducing element, so as to self-generate current responsive to the fluid flow and the interaction of the current-inducing element therewith, a storing element, for storing the electrical charge generated by the interaction of the current-inducing element and the current-generating element so as to charge the storing element, adapted to generate current from the electrical charge stored therein for activating the flow volume processing element, and a discharging element, for enabling the current in the flow volume processing element to discharge therethrough, wherein, upon each interaction of the current-inducing element and the current-generating element, the metering system sequences through a metering cycle whereby the storing element charges, the current generated in the storing element activates the flow volume processing element such that the flow volume, processing element starts up, and operates, calculates and stores the volume of fluid flow, and the current from the flow volume processing element discharges through the discharging element such that the flow volume processing element shuts down, wherein the method comprises: inducing current in the current-inducing element responsive to the flow of the fluid through the system; generating current including electrical charge in the current-generating element responsive to the current induced by the interaction of the current-inducing element and the current-generating element; storing electrical charge generated by the interaction of the current-inducing element and the current-generating element in the storing element; generating current from the electrical charge stored in the storing element; activating the flow volume processing element by the current generated in the storing element; processing the volume of the flow of the fluid over time to determine the level of filter usage, in the flow volume processing element; and discharging the current from the flow volume processing element through the discharging element. ### Claim 19 (depends on 18) The method of claim 18, wherein the discharging element comprises a level indicating element for emitting light to indicate the level of filter usage as determined by the flow volume processing element, so as to indicate the need for filter replacement, and wherein discharging further comprises discharging the current from the flow volume processing element through the level indicating element. ### Claim 20 (depends on 19) The method of claim 19, wherein the level indicating element comprises a light-emitting diode, and wherein discharging further comprises discharging the current from the flow volume processing element through the light emitting diode. ### Claim 21 (depends on 18) The method of claim 18, wherein the fluid comprises water, and wherein inducing further comprises inducing current responsive to the flow of water through the system. ### Claim 22 (depends on 18) The method of claim 18, wherein the system is compact in size, and wherein inducing further comprises inducing current responsive to the flow of fluid through the compact system. ### Claim 23 (depends on 18) The method of claim 18, wherein the flow volume processing element comprises a microprocessor, and wherein processing further comprises processing the volume of the flow of fluid over time in the microprocessor. ### Claim 24 (depends on 18) The method of claim 18, wherein the flow volume processing element is further adapted to compare the determined level of filter usage to a preset level of filter usage, and wherein processing further comprises comparing the determined level of filter usage to a preset level of filter usage in the microprocessor. ### Claim 25 (depends on 18) The method of claim 18, wherein the flow volume processing element further comprises an electronically activating element, for enabling electronic activation of the flow volume processing element, further comprising electronically activating the flow volume processing element. ### Claim 26 (depends on 25) The method of claim 25, wherein the electronically activating element includes a diode and a resistor, connected to the current-generating element, the storing element and the flow volume processing element, and wherein electronically activating further comprises electronically activating the flow volume processing element through the diode and the resistor. ### Claim 27 (depends on 18) The method of claim 18, wherein the current-inducing element comprises an impeller, which includes a rotor comprising a plurality of blades extending radially therein, adapted to be positionable transverse to the path of the flow of the fluid through the system such that the flow of fluid through the system generates rotation of the rotor in the impeller, and further including at least one magnet mounted in at least one blade thereof, and wherein inducing further comprises generating rotation of the rotor in the impeller. ### Claim 28 (depends on 27) The method of claim 27, wherein the impeller magnet comprises a plurality of magnets, each mounted in one of the plurality of blades in the impeller, and wherein inducing further comprises generating rotation of the plurality of magnets mounted in the plurality blades in the rotor. ### Claim 29 (depends on 28) The method of claim 28, wherein the plurality of magnets extend radially on the impeller rotor blades, and wherein inducing further comprises generating rotation of the plurality of magnets extending radially on the impeller rotor blades. ### Claim 30 (depends on 28) The method of claim 28, wherein the plurality of magnets comprise four magnets, and the plurality of blades in which each of the four magnets is mounted comprise four blades, and wherein inducing further comprises generating rotation of the four magnets mounted on the four blades. ### Claim 31 (depends on 18) The method of claim 18, wherein the current-generating element comprises a coil, and wherein generating current further comprises generating current in the coil. ### Claim 32 (depends on 18) The method of claim 18, wherein the storing element comprises a capacitor, and wherein storing further comprises storing the electrical charge in the capacitor. ### Claim 33 (depends on 18) The method of claim 18, further including a non-volatile memory element, adapted to retain stored data when power is cut off, further including retaining stored data in the non-volatile memory element when the power is cut off. ### Claim 34 A method of metering the volume of flow of a fluid through a filter, to enable the level of filter usage to be indicated, wherein a preset level of metered fluid flow volume indicates a corresponding level of filter usage, and wherein a source of the fluid is adapted to be connectable to the filter, to enable the fluid to flow through the filter and through the system, and wherein the system is adapted to self-generate current for the system responsive to the flow of the fluid therethrough, in a system which comprises flow volume processing means, for processing the volume of the flow of the fluid over time to determine the level of filter usage, current-inducing means, for inducing current responsive to the flow of the fluid, current-generating means, for generating current including electrical charge responsive to the current induced therein by the interaction thereof with the current-inducing means, so as to self-generate current responsive to the fluid flow and the interaction of the current-inducing means therewith, storing means, for storing the electrical charge generated by the interaction of the current-inducing means and the current-generating means so as to charge the storing means, adapted to generate current from the electrical charge stored therein for activating the flow volume processing means, and discharging means, for enabling the current in the flow volume processing means to discharge therethrough, wherein, upon each interaction of the current-inducing means and the current-generating means, the metering system sequences through a metering cycle whereby the storing means charges, the current generated in the storing means activates the flow volume processing means, such that the flow volume processing means starts up, and operates, calculates and stores the volume of fluid flow, and the current from the flow volume processing means discharges through the discharging means such that the flow volume processing means shuts down, wherein the method comprises: inducing current in the current-inducing means responsive to the flow of the fluid through the system; generating current including electrical charge in the current-generating means responsive to the current induced by the interaction of the current-inducing means and the current-generating means; storing electrical charge generated by the interaction of the current-inducing means and the current-generating means in the storing means; generating current from the electrical charge stored in the storing means; activating the flow volume processing means by the current generated in the storing means; processing the volume of the flow of the fluid over time to determine the level of filter usage, in the flow volume processing means; and discharging the current from the flow volume processing means through the discharging means.