Sterilizer Buffer Tank Ozone Diffusibility

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing sterilizing methods using ozone gas struggle with diffusibility within the chamber, requiring high output ozone generators that increase the size of the sterilizer apparatus, compromising efficiency and space constraints.

Innovation Solution

A sterilizing method and apparatus that utilize a buffer tank to store ozone gas produced by an ozone generator, allowing for indirect injection into the chamber, enhancing ozone gas diffusibility without increasing the apparatus size, combined with hydrogen peroxide vapor injection for improved sterilization efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the ozone generator size is increased to improve ozone gas diffusibility, then the diffusibility of ozone gas is improved, but the size of the sterilizing apparatus increases

Engineering Contradiction:
Improveozone gas diffusibilityVSAvoidapparatus size
Core Design Contradiction:
ProductivityVSVolume of moving object

Solution Approach 1:

A buffer tank is introduced as an intermediary component between the ozone generator and the sterilization chamber. The buffer tank stores ozone gas and enables controlled injection into the chamber, improving ozone gas diffusibility without requiring a larger ozone generator. This mediator allows the system to achieve better gas distribution while maintaining a compact apparatus configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

Ozone gas is prepared in advance by filling the buffer tank with ozone gas before the actual sterilization process. This preliminary action allows the ozone gas to be ready for injection when needed, improving the efficiency and diffusibility of ozone gas delivery without requiring continuous high-output generation, thus avoiding apparatus size increase.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If a high-output ozone generator is used to enhance ozone gas diffusibility, then the sterilization efficiency is improved, but the apparatus size increases

Engineering Contradiction:
Improvesterilization efficiencyVSAvoidapparatus size
Core Design Contradiction:
ProductivityVSVolume of moving object

Solution Approach 1:

The buffer tank serves as a mediator that decouples the ozone generation process from the injection process. Instead of requiring a high-output generator to continuously produce ozone, the system generates ozone at a lower rate, stores it in the buffer tank, and then injects it as needed. This maintains sterilization efficiency while avoiding the need for a large high-output generator.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary ozone generation and storage in the buffer tank before the injection phase. This allows the use of a lower-output generator that operates for a longer duration to fill the buffer, rather than requiring a high-output generator to deliver all ozone at once. The preliminary preparation maintains sterilization effectiveness while reducing apparatus size.

Inventive Principle:
Principle #10Preliminary action

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 method improves ozone gas diffusibility and sterilization efficiency while maintaining a compact apparatus size, reducing the need for high-output ozone generators and optimizing the use of hydrogen peroxide vapor for enhanced sterilization effects.

Implementation Method 1

an ozone preparation step of filling an inside of a buffer tank with ozone gas, and an ozone injection step of injecting the ozone gas filled in the inside of the buffer tank to an inside of the chamber

Methodology Applied
Scientific EffectGas storage and diffusion: Diffusion

Implementation Method 2

a first vapor preparation step of evaporating and filling a first aqueous solution of hydrogen peroxide in an evaporator, and a first vapor injection step of injecting produced vapor to the inside of the chamber from the evaporator

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 3

an ozone generator configured to produce ozone gas

Methodology Applied
Scientific EffectOzone generation: Ozone

Data Source

PatentUS11766497B2Sterilizing method and sterilizer
Publication Date: 2023.09.26 MIURA CO LTD
  • US11766497B2 patent drawing
  • US11766497B2 patent drawing
  • US11766497B2 patent drawing

AI summary

A sterilizing method for sterilizing a sterilization object housed in a chamber 11 includes an ozone preparation step S504 for filling an inside of a buffer tank 34 with ozone gas, and an ozone injection step S505 for injecting the ozone gas filled in the inside of the buffer tank 34 into the chamber 11.