System and a method for notifying a user to replace a sacrificial anode

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Users often fail to replace sacrificial anodes in pool and spa systems in a timely manner, leading to equipment vulnerability to corrosion due to lack of awareness and visible inspection requirements.

Innovation Solution

A device with a sacrificial anode and a sensor connected to a pool automation system that detects water entry into a cavity when the anode is depleted, transmitting signals to notify users and potentially disable system functions until replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If the sacrificial anode is used to protect equipment from corrosion, then the equipment service life is extended, but the user becomes unaware of the anode's depletion status

Engineering Contradiction:
Improveequipment service lifeVSAvoidanode depletion status awareness
Core Design Contradiction:
Duration of action of stationary objectVSLoss of information

Solution Approach 1:

The patent implements a feedback mechanism where a sensor continuously monitors the cavity space around the sacrificial anode and automatically detects when the anode is depleted. This feedback is transmitted to a controller that then notifies the user through multiple channels (visual LED indicators, audible alarms, wireless notifications to mobile devices). This resolves the contradiction by providing continuous information about the anode's status without requiring user inspection, thus maintaining equipment protection while eliminating information loss.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-monitoring and self-notification functions. The sensor automatically detects anode depletion, the controller processes this information, and the system generates notifications without requiring user intervention. This self-service approach ensures that users are always informed of the anode status while the anode continues to protect equipment, resolving the information awareness problem.

Inventive Principle:
Principle #25Self-service

2Device complexity

If the user must visually inspect the anode to determine replacement need, then no additional sensors or automation are required, but the user may miss the depletion signal and equipment remains unprotected

Engineering Contradiction:
Improvesystem structureVSAvoidequipment protection continuity
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent replaces the mechanical/visual inspection method with an automated sensor-based detection system. Instead of requiring users to physically examine the anode, an electrical sensor monitors the cavity space and detects depletion conditions. This substitution of mechanical inspection with automated sensing significantly improves reliability of equipment protection while maintaining relatively simple system architecture through the use of basic electrical components.

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

3Reliability

If the sacrificial anode is depleted without notification, then days or weeks of equipment vulnerability occur, but adding notification systems increases device complexity

Engineering Contradiction:
Improvetimely anode replacementVSAvoidnotification system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The notification system is segmented into separate functional modules: a sensor module for detection, a controller module for processing, and multiple notification output channels (LED indicators, audible alarms, wireless communication). This segmentation allows the system to provide comprehensive notification capabilities while keeping each individual component simple and manageable, thus improving timely replacement reliability without excessive overall complexity.

Inventive Principle:
Principle #1Segmentation

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

Timely notification to users for anode replacement, protection of equipment from corrosion by disabling functions when the anode is depleted, and assistance in purchasing new anodes, along with estimating anode lifetime and wear rate.

Implementation Method 1

the sensor detects pool water inside the cavity when the sacrificial anode is worn away

Methodology Applied
Scientific EffectElectrical conductivity detection: Conduction (electrical)

Data Source

PatentEP4219791A1System and a method for notifying a user to replace a sacrificial anode
Publication Date: 2023.08.02 PENTAIR INC
  • EP4219791A1 patent drawingFigure 1
  • EP4219791A1 patent drawingFigure 2
  • EP4219791A1 patent drawingFigure 3

AI summary

A device, system, and a method are provided for notifying a user to replace a sacrificial anode in a pool or spa system. The device is provided in the form of a body defining a cavity, a sacrificial anode, and a sensor. The sacrificial anode substantially surrounds the cavity when the sacrificial anode is coupled to the body. The sensor is at least partially received into the cavity and is in communication with a pool automation system. The sensor is designed to transmit a signal to the pool automation system when the sensor detects water within the cavity. The signal is processed by the pool automation system, and the pool automation system may then transmit a notification to a user that the sacrificial anode is depleted.