Atomizer Air Channel Balancing Negative Pressure

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Solution Overview

Problem

Existing e-cigarette devices face challenges with e-liquid delivery due to negative pressure in the liquid storage cavity, which reduces e-liquid conveyance to the atomization surface, leading to excessive heating and the generation of harmful substances.

Innovation Solution

The proposed atomizer design includes a housing with a liquid storage cavity, an atomization assembly, a sealing element, a holder, and an air channel with distinct cross-sectional areas to facilitate air flow into the liquid storage cavity, alleviating negative pressure and enhancing e-liquid delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the liquid storage cavity is sealed to prevent leakage, then sealing performance is improved, but air cannot enter the cavity to balance negative pressure, worsening e-liquid conveyance

Engineering Contradiction:

Improvesealing performanceVSAvoide-liquid conveyance speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The air channel is segmented into two portions with different cross-sectional areas. The first channel portion (between holder side surface and sealing element) has a larger cross-sectional area for efficient air intake, while the second channel portion (between holder upper surface and sealing element) has a smaller area. This segmentation allows the system to maintain sealing while providing adequate air supply path for pressure balancing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the sealing structure are assigned different functional qualities. The sealing element provides sealing function, while specific gaps (air channels) are intentionally left with controlled cross-sectional areas to allow air flow. The holder's side surface and upper surface create different channel portions with optimized local properties for air intake.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If micropore channels are used for e-liquid flow and air exchange, then fluid transmission is enabled, but during continuous inhalation air cannot quickly replenish the cavity, causing negative pressure and insufficient e-liquid supply

Engineering Contradiction:

Improvefluid transmission capabilityVSAvoidair replenishment speed

Core Design Contradiction:

Adaptability or versatilityVSSpeed

Solution Approach 1:

The air channel provides a direct dimensional pathway from the external environment to the liquid storage cavity, bypassing the need for air to travel through the micropore channels. This creates a dedicated air replenishment dimension that operates independently from the e-liquid flow path, enabling rapid pressure equalization during continuous inhalation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Power

If the heating element heats the e-liquid continuously, then atomization is maintained, but insufficient e-liquid supply causes excessive temperature and decomposition of e-liquid components

Engineering Contradiction:

Improveheating powerVSAvoidharmful substance generation

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The air channel system provides feedback control for pressure balancing. As e-liquid is consumed and negative pressure builds up, air automatically flows through the air channel to equalize pressure, which in turn maintains proper e-liquid supply to the heating element, preventing temperature runaway and harmful substance generation.

Inventive Principle:

Principle #23Feedback

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 effectively supplements air to the liquid storage cavity, balancing negative pressure and improving e-liquid conveyance to the atomization surface, thereby preventing excessive heating and reducing the formation of harmful substances.

Implementation Method 1

configured to provide a flow path for air to enter the liquid storage cavity... supplements air to the liquid storage cavity, balancing negative pressure

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

a sealing element, configured to at least partially seal the liquid storage cavity

Methodology Applied

Scientific EffectSealing:

Implementation Method 3

an atomization assembly, configured to atomize the liquid substrate to generate an aerosol... The e-liquid is heated to be atomized

Methodology Applied

Scientific EffectHeating: Heating

Data Source

PatentUS20250113867A1Atomizer and electronic atomization device

Publication Date: 2025.04.10 SHENZHEN FIRST UNION TECH CO LTD

AI summary

This application provides an atomizer and an electronic atomization device. The atomizer includes a housing, and the housing is internally provided with: a liquid storage cavity; an atomization assembly; a sealing element; a holder, configured to support the sealing element; and an air channel, including a first channel portion formed between the side surface of the holder and the sealing element and a second channel portion formed between the upper surface of the holder and the sealing element, where the first channel portion has a cross-sectional area greater than that of the second channel portion. The atomizer can supplement air to the liquid storage cavity to relieve or balance the negative pressure in the liquid storage cavity through the air channel; and the air channel including a portion with a different cross-sectional area, is advantageous for air to overcome the pressure of a liquid substrate into the liquid storage cavity.