Microbubble Generator Downstream Gas Inlet Clogging Prevention

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Solution Overview

Problem

Microbubble generating devices face clogging issues when contaminated water is directly fed in, as contaminants tend to get stuck in the gas supply path, leading to premature device failure.

Innovation Solution

The microbubble generating device features a gas supply path with an exit end oriented downstream, preventing liquid flow into the gas supply path unless it reverses, and an adjustable throat area to control microbubble generation, allowing contaminated water to be processed without clogging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If contaminated water is directly fed into the microbubble generating device to generate microbubbles, then contaminant removal efficiency is improved, but the gas supply path becomes clogged with contaminants

Engineering Contradiction:

Improvecontaminant removal efficiencyVSAvoidgas supply path clogging

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The gas supply path is inverted so that the opening faces the downstream direction rather than the upstream direction. This reversal prevents contaminants from entering the gas supply path while allowing gas to be supplied effectively, resolving the clogging problem while maintaining contaminant removal efficiency

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The throat part serves as an intermediary zone between the liquid flow path and discharge path. By positioning the gas supply opening at the downstream-facing side of the throat part, it acts as a mediator that allows gas injection while preventing contaminant ingress into the gas supply path

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This design enables efficient microbubble generation from contaminated water, preventing clogging and allowing contaminants to adhere to microbubbles effectively, simplifying the purification process and improving contaminant removal rates.

Implementation Method 1

The venturi tube of the redistributor accelerates the liquid and air bubbles again

Methodology Applied

Scientific EffectVenturi effect: Venturi Effect

Implementation Method 2

the gas supply path has an exit end that opens toward the downstream side of the liquid flow. Specifically, the gas supply path has a structure such that a liquid does not easily flow into the gas supply path unless the liquid flows backward

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Data Source

PatentEP3061520B1Microbubble generating device and contaminated water purifying system provided with microbubble generating device

Publication Date: 2023.06.07 EARTH RE PURE

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AI summary

The present invention provides a microbubble generating device that is capable of generating microbubbles from contaminated water. The microbubble generating device 10 according to the present invention comprises a liquid flow path 11 through which a pressurized liquid flows, a discharge path 12 through which generated microbubbles and a liquid are discharged, a throat part 13 that connects the liquid flow path 11 and the discharge path 12, and that has a flow path area smaller than the area of the liquid flow path 11 or the discharge path 12, and a gas supply path 14 for supplying a gas into the liquid flow path 11 or the throat part 13, wherein the gas supply path 14 has an exit end 143 that opens toward the downstream side of the liquid flow.