Variable Frequency Water Conditioner Circuit

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Solution Overview

Problem

Existing methods for preventing and removing scale in water pipes are either harmful to health and the environment, require constant chemical replenishment, or suffer from inefficiencies due to the use of permanent magnets and R-L-C circuits that cause overheating and reduced magnetic field strength.

Innovation Solution

A device using a switched mode power supply and a transistor to generate an alternating magnetic field with variable frequency, produced by overlapping coils around a pipe, which effectively removes and prevents scale formation without chemicals, while maintaining a strong magnetic field and preventing circuit overheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If R-L-C circuit with timer is used to generate alternating magnetic field, then scale removal function is provided, but circuit overheating occurs and magnetic field strength is reduced

Engineering Contradiction:
Improvemagnetic field strengthVSAvoidcircuit temperature
Core Design Contradiction:
PowerVSTemperature

Solution Approach 1:

The patent employs periodic switching action through transistor Q1 that alternates between ON and OFF states, creating a pulsed magnetic field regime. This periodic operation allows the circuit to dissipate heat between pulses while maintaining strong magnetic field intensity during active periods, thereby resolving the contradiction between magnetic field strength and circuit temperature

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent introduces dynamic frequency variation by changing the RC time constant values (initially 100μs, then 1ms, then 10ms) to optimize performance at different operational stages. This dynamic adjustment allows the system to adapt between strong magnetic field generation and heat dissipation requirements, resolving the static contradiction in the R-L-C circuit design

Inventive Principle:
Principle #15Dynamics

2Duration of action of stationary object

If permanent magnets are used to prevent scale formation, then magnetic field is provided continuously, but magnets lose magnetism over time and require replacement

Engineering Contradiction:
Improvemagnet durabilityVSAvoidmagnetic field consistency
Core Design Contradiction:
Duration of action of stationary objectVSReliability

Solution Approach 1:

The patent replaces permanent magnets with an electromagnetic system using coil L1 and transistor switching. This substitution eliminates the degradation issue of permanent magnets while maintaining continuous magnetic field application through controlled periodic switching, thereby achieving both durability and reliability

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The circuit automatically regenerates its magnetic field through the switching action of Q1 and the energy storage in capacitor C1, eliminating the need for external replacement or maintenance. The system serves itself by continuously replenishing the magnetic field without degradation over time

Inventive Principle:
Principle #25Self-service

3Productivity

If chemical methods are used to remove scale, then scale dissolution is achieved, but health and environmental damage occurs

Engineering Contradiction:
Improvescale removal efficiencyVSAvoidhealth and environmental impact
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces chemical dissolution methods with an electromagnetic field-based physical method. The alternating magnetic field generated by coil L1 and transistor Q1 directly affects the scale deposits through electromagnetic forces, achieving scale removal without any chemical substances, thereby eliminating health and environmental hazards while maintaining removal efficiency

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Temperature

If timer transmits limited current signal, then circuit heating is reduced, but magnetic field strength becomes low

Engineering Contradiction:
Improvecircuit temperatureVSAvoidmagnetic field strength
Core Design Contradiction:
TemperatureVSPower

Solution Approach 1:

The transistor Q1 switching creates periodic high-current pulses that generate strong magnetic fields during brief intervals, while the duty cycle remains low enough to prevent excessive heating. This periodic action allows the system to deliver high power when needed while maintaining acceptable temperature levels overall

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts the RC time constant values through multiple stages (100μs, 1ms, 10ms) to optimize the balance between current pulse strength and heat generation. This dynamic control allows the circuit to transmit stronger signals when required while managing thermal effects

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The device efficiently removes and prevents scale formation in water pipes by producing a strong, variable-frequency magnetic field, reducing calcium deposits, and maintaining the magnetic field strength without overheating the circuit, thus providing a chemical-free and effective solution for scale management.

Implementation Method 1

a coil, two overlapping coils of optimum number of turns wound around the pipe... When said signal is communicated to the coil, an electromagnetic field is produced surrounding to the coil

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

said signal is interrupted at irregular time intervals by said transistor causing the production of an alternative electromagnetic field with a variable frequency

Methodology Applied
Scientific EffectElectromagnetic field oscillation: Alternating Magnetic Field

Data Source

PatentEP3542174B1Water conditioner with variable frequency electromagnetic field
Publication Date: 2023.05.31 WEISMACHER ECO PTE LTD
  • EP3542174B1 patent drawingFigure 1
  • EP3542174B1 patent drawingFigure 2
  • EP3542174B1 patent drawing

AI summary

The present invention relates to an apparatus for removal and prevention of5 scale deposition comprising SMPS (switched mode power supply) (1) forgenerating DC signal, retrofittable pipe section (3) being fitted in residencewater carrying pipe wherefrom the scale is removed or prevented to bedeposited, a signal cable (2) being wound around the pipe section (3) to formoverlapped coils of optimum turns being connected by center tap (2c), a10 transistor (4) of low operating frequency electrically connected with signalcable (2) at center tap (2c) formed between overlapped coils. The conductorlead (2a) and conductor lead (2b) are respectively connected to the terminal Band C of the transistor (4). By said configuration, when the signal is appliedto the signal cable (2), an alternative electromagnetic field with variable15 frequency is induced around pipe that effectively removes and prevents thescale forming through the water passed from said conduit.