Self-Maintaining Spa Water Treatment With Nano Bubble Purification

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Solution Overview

Problem

Conventional immersion structures, such as hot tubs and spas, face issues with water cleanliness fluctuations due to reuse, requiring chemical sanitizers that can harm users and plumbing systems, necessitating frequent maintenance and chemical balancing.

Innovation Solution

Integration of a water treatment system with a nano bubble generator that produces nano bubbles for cleaning and purifying water, reducing the need for chemical sanitizers and maintaining water quality through oxidative reactions and neutral buoyancy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical sanitizers are added to the water in the immersion structure, then water quality is improved, but users are exposed to harmful chemicals and the plumbing system is damaged

Engineering Contradiction:
Improvewater qualityVSAvoidchemical exposure
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful chemical sanitizers from the water treatment process and replaces them with a nano bubble generator that produces oxygen-based nano bubbles. These nano bubbles provide sanitization through oxidation without introducing harmful chemicals into the water, thus maintaining water quality while eliminating chemical exposure hazards.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical-based sanitation system with a physical/mechanical system involving a nano bubble generator. The generator creates nano bubbles through mechanical means (gas injection and agitation), and these bubbles physically interact with contaminants through oxidation and adhesion, substituting chemical reactions with physical-chemical processes that avoid harmful substance introduction.

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

2Reliability

If chemical sanitizers are used repeatedly to maintain water quality, then water cleanliness is improved, but maintenance frequency and user intervention are increased

Engineering Contradiction:
Improvewater cleanlinessVSAvoidmaintenance time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The nano bubble generator operates autonomously to maintain water quality without requiring user intervention for chemical balancing or frequent maintenance. The system self-regulates by continuously generating nano bubbles that naturally oxidize contaminants and maintain sanitation, eliminating the need for users to repeatedly add chemicals or monitor water chemistry parameters.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The nano bubble generator provides continuous water treatment by constantly producing nano bubbles that circulate through the water, offering uninterrupted sanitization and cleanliness maintenance. This continuous action replaces the periodic chemical treatment approach, ensuring consistent water quality without gaps that would require additional user intervention.

Inventive Principle:
Principle #20Continuity of useful action

3Reliability

If chemicals are added to sanitize water, then bacteria are killed, but pH and alkalinity levels fluctuate requiring balancing

Engineering Contradiction:
Improvedisinfection effectivenessVSAvoidpH and alkalinity stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent removes chemical sanitizers from the disinfection process and replaces them with oxygen-based nano bubbles. These bubbles provide bacterial killing through oxidation without introducing substances that alter pH or alkalinity levels, thus maintaining disinfection effectiveness while preserving water chemistry stability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the fundamental parameter of disinfection from chemical concentration-based to oxygen oxidation-based. By using nano bubbles filled with oxygen or ozone, the system achieves bacterial elimination through oxidative reactions rather than chemical biocides, fundamentally altering the disinfection mechanism to avoid pH and alkalinity fluctuations.

Inventive Principle:
Principle #35Parameter changes

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 system maintains clear, odor-free water with reduced chemical exposure, minimizing maintenance needs and ensuring consistent water quality by killing bacteria and stabilizing pH levels.

Implementation Method 1

nano bubbles (e.g., stability, surface charge, neutral buoyancy, scarification, oxidation, etc.) allow the nano bubbles to treat the water and/or surfaces

Methodology Applied
Scientific EffectOxidation: Oxidation

Implementation Method 2

nano bubbles (e.g., stability, surface charge, neutral buoyancy, scarification, oxidation, etc.)

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Data Source

PatentEP4433014B1Self-maintaining hot tub or spa
Publication Date: 2025.09.03 SUNDANCE SPAS INC
  • EP4433014B1 patent drawingFigure 1
  • EP4433014B1 patent drawingFigure 2
  • EP4433014B1 patent drawingFigure 3A~3B

AI summary

An immersion structure (e.g., hot tub, spa, swim spa, pool, showerhead, whirlpool bathtub, and whirlpool bath) has a water treatment system that includes a nano bubble generator for purifying the water. The water treatment system can further include a gas generator that works in conjunction with the nano bubble generator to create a composition of liquid containing nano bubbles. The nano bubbles circulate in the immersion structure thereby cleaning the plumbing system and water. The water treatment system can be located within a cabinet housing the immersion structure. The system can be controlled (e.g., water treatment, operational parameters, cleaning boost, part replacement, etc.) by a user via a smart app on a client device.