Multi-Chamber Ultrasonic Mist Generator for Consistent Nicotine Dosing

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Solution Overview

Problem

Conventional electronic vaporising inhalers suffer from issues such as leaking, inconsistent nicotine doses, and the inability to mimic the Mouth-To-Lung (MTL) effect of traditional cigarettes, which hampers their effectiveness in smoking cessation programs.

Innovation Solution

The development of a mist generator that uses ultrasonic vibrations to atomize a liquid containing nicotine, employing a capillary element made from bamboo fibers to enhance absorption and fluid retention, and optimizing the frequency range of 2.8 MHz to 3.2 MHz for efficient nicotine delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single liquid chamber is used in conventional vaporising inhalers, then the device structure is simple, but the nicotine dose delivery is inconsistent and leaking occurs

Engineering Contradiction:

Improvenicotine dose consistencyVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the liquid delivery system into multiple separate liquid chambers (first liquid chamber for nicotine-containing liquid, second liquid chamber for flavouring liquid) with independent capillaries and ultrasonic transducers. This segmentation allows each chamber to be optimized for its specific function, preventing oversaturation and undersaturation issues that cause inconsistent dosing and leaking in single-chamber designs.

Inventive Principle:

Principle #1Segmentation

2Productivity

If high temperature heating is used to vaporise liquid, then vaporisation efficiency is improved, but metal burning and burnt smell occur

Engineering Contradiction:

Improvevaporisation efficiencyVSAvoidmetal burning and burnt smell

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the conventional thermal heating system with an ultrasonic mechanical vibration system. Ultrasonic transducers generate high-frequency mechanical vibrations that directly atomize the liquid through cavitation effects, eliminating the need for high-temperature heating elements and thus preventing metal burning and burnt smells while maintaining efficient liquid vaporisation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If conventional heating elements are used, then the device is simple to manufacture, but power consumption is high and second-hand smoke effects occur

Engineering Contradiction:

Improvedevice manufacturing simplicityVSAvoidpower consumption

Core Design Contradiction:

Ease of manufactureVSUse of energy by moving object

Solution Approach 1:

The patent changes the fundamental operating parameter from thermal heating to ultrasonic vibration. By using ultrasonic transducers operating at specific frequencies (e.g., 20-100 kHz), the system achieves efficient liquid atomisation with significantly lower power consumption compared to high-temperature heating, while also eliminating second-hand smoke effects through controlled mist generation.

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 ultrasonic mist generator achieves higher efficiency in nicotine delivery compared to conventional devices, reducing power requirements and minimizing second-hand smoke effects, while providing a consistent and controlled nicotine dose that mimics the MTL effect.

Implementation Method 1

a first ultrasonic transducer configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid

Methodology Applied

Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 2

The development of a mist generator that uses ultrasonic vibrations to atomize a liquid containing nicotine

Methodology Applied

Scientific EffectUltrasonic atomization: Ultrasonic Vibration

Implementation Method 3

a first capillary which is absorbent, at least part of the first capillary being generally parallel with the plane and extending along the holder surface from the first liquid chamber to the first ultrasonic transducer, wherein the first capillary transports the first liquid by capillary action from the first liquid chamber to the first atomisation surface

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS20250151784A1Multi-chamber mist generator for generating mist including nicotine

Publication Date: 2025.05.15 SHAHEEN INNOVATIONS HLDG LTD

AI summary

A mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user.