Ionized Airflow Tube for Static-Safe Blowers and Vacuums

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Solution Overview

Problem

Handheld electric blowers and vacuums experience significant static charge buildup due to triboelectric charging, leading to user discomfort and potential damage to electronic devices, particularly in low humidity conditions with high airflow speeds and particle presence.

Innovation Solution

Incorporation of an ion generator within the airflow path of the blower or vacuum to ionize the airflow, neutralizing static charges on non-conductive surfaces using a high voltage source and corona discharge elements, optionally controlled by sensors and user interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high airflow speed is used to improve debris removal efficiency, then productivity increases, but static charge buildup increases causing user discomfort and potential damage to electronic devices

Engineering Contradiction:

Improvedebris removal efficiencyVSAvoidstatic charge buildup

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies ionization technology to convert the harmful static charge buildup into a beneficial effect by generating ions that neutralize the static charges. The ionization process creates positive and negative ions that attach to charged particles in the airflow, allowing them to discharge safely and prevent both user shocks and damage to electronic components while maintaining high airflow performance

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Ease of manufacture

If non-conductive materials are used for flow tube to reduce weight and cost, then ease of manufacture improves, but static charge accumulation increases

Engineering Contradiction:

Improveflow tube manufacturingVSAvoidstatic charge accumulation

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent introduces an ionization system as an intermediary mechanism between the non-conductive flow tube and the static charges. The ionization process generates ions that act as mediators to neutralize static charges on the non-conductive surfaces without requiring the flow tube itself to be conductive, thus maintaining the benefits of non-conductive materials while eliminating the harmful static accumulation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If ion generator is added to reduce static charge, then harmful factors decrease, but device complexity increases

Engineering Contradiction:

Improvestatic charge reductionVSAvoidapparatus structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The ionization system is integrated into the existing blower apparatus to perform multiple functions: it neutralizes static charges on the flow tube, prevents user shocks, protects electronic components from damage, and maintains airflow performance. By combining these functions into a single ionization module, the patent reduces the overall complexity that would result from adding separate systems for each function

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Effectively reduces static charge buildup, minimizing user shocks and protecting electronic components, while maintaining low power consumption and operational efficiency.

Implementation Method 1

An ion generator of the apparatus is operable to ionize the airflow moving through the interior surface of the flow tube to reduce static electrical charges induced within at least the flow tube

Methodology Applied

Scientific EffectIonization: Ionisation

Implementation Method 2

Methodology Applied

Scientific EffectCorona discharge: Corona Discharge

Implementation Method 3

a fan and motor operable to generate an airflow

Methodology Applied

Scientific EffectMechanical force: Mechanical Force

Implementation Method 4

Handheld electric blowers and vacuums experience significant static charge buildup due to triboelectric charging

Methodology Applied

Scientific EffectTriboelectric charging: Triboelectric Effect

Data Source

PatentUS20260013024A1Air blower and/or vacuum with static charge mitigation

Publication Date: 2026.01.08 THE TORO COMPANY

AI summary

An apparatus may be configured as a blower, vacuum, or combination thereof. The apparatus includes a fan and motor operable to generate an airflow. A flow tube of the apparatus has an inlet end, an outlet end and an interior surface. The flow tube is coupled receive the airflow at the inlet end and deliver the airflow to the outlet end. An ion generator of the apparatus is operable to ionize the airflow moving through the interior surface of the flow tube to reduce static electrical charges induced within at least the flow tube.