Atomizer Heating Sheet Design for Efficient E-Cigarette Aerosol Generation

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Solution Overview

Problem

Existing atomizers in electronic cigarettes have complex structures, high manufacturing costs, and low heating efficiency due to spiral heating wires, resulting in poor atomizing effects and unstable aerosol volumes.

Innovation Solution

An atomizer design featuring a housing with a microporous liquid conducting body and an atomizing unit with heating sheets arranged along the central axis, where the heating sheets have a side surface in contact with a liquid guiding component, enhancing heating efficiency and aerosol production, and a split-type electronic cigarette with a detachable power supply assembly for efficient aerosol generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a spiral heating wire is used in the atomizing head, then the atomizer can function, but the heating efficiency is low and the atomizing effect is poor

Engineering Contradiction:
Improveheating efficiencyVSAvoidatomizing effect
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent replaces the traditional spiral heating wire (mechanical/coil structure) with a heating sheet that has a large surface area contact with the liquid guiding component. This substitution transforms the heating mechanism from a concentrated coil to a distributed sheet structure, achieving better heat distribution and higher heating efficiency while maintaining stable atomization.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent transitions from a one-dimensional spiral wire structure to a two-dimensional heating sheet structure. The heating sheet provides a larger surface area in contact with the liquid guiding component, enabling more efficient heat transfer and improved atomizing effect through increased dimensional contact area.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If an atomizing head with spiral heating wire is used, then the atomizer can operate, but the structure is complicated and the manufacturing cost is high

Engineering Contradiction:
Improveatomizer operationVSAvoidatomizing head structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the heating element from the traditional integrated atomizing head structure and separates it into a standalone heating sheet that can be independently replaced. This extraction simplifies the overall atomizer structure, reducing manufacturing complexity and cost while maintaining operational reliability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the atomizer into distinct functional components: the liquid storage cup, the microporous liquid conducting body, the liquid guiding component, and the heating sheet. This segmentation allows for simpler manufacturing of individual parts and easier assembly, reducing overall device complexity.

Inventive Principle:
Principle #1Segmentation

3Temperature

If a complex atomizing head structure is used, then heating can be achieved, but the aerosol volume is unstable

Engineering Contradiction:
Improveheating capabilityVSAvoidaerosol volume
Core Design Contradiction:
TemperatureVSStability of the object's composition

Solution Approach 1:

The patent applies local quality by designing the heating sheet to have uniform thermal properties across its surface, ensuring consistent heating across the entire contact area with the liquid guiding component. This uniform local heating quality prevents hot spots and ensures stable aerosol generation throughout operation.

Inventive Principle:
Principle #3Local quality

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 design simplifies the atomizer structure, reduces manufacturing costs, and improves heating efficiency and aerosol stability, providing a better atomizing effect and consistent aerosol volume.

Implementation Method 1

a microporous liquid conducting body plugged inside the opening and configured for conveying the tobacco liquid in the liquid storage cup to the atomizing unit

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

at least one heating sheet arranged along the central axis of the atomizer; the heating sheet includes a side surface in contact with the liquid guiding component, the liquid guiding component is configured to be in contact with the microporous liquid conducting body to guide the tobacco liquid to the heating sheet

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentEP3289898B1Atomizer and electronic cigarette having same
Publication Date: 2021.10.20 SHENZHEN FIRST UNION TECH CO LTD
  • EP3289898B1 patent drawingFigure 1
  • EP3289898B1 patent drawingFigure 2
  • EP3289898B1 patent drawingFigure 3

AI summary

An atomizer (100) includes a housing (101) and a liquid storage cup (103). The housing has a mouthpiece (102) thereon. The liquid storage cup is provided in the housing and configured for storing tobacco liquid. The liquid storage cup has an opening (104) at one end thereof. A microporous liquid conducting body (105) is plugged inside the opening for conducting the tobacco liquid in the liquid storage cup into an atomizing unit (200). The atomizing unit is connected to the opening and configured for heating the tobacco liquid to generate aerosol. An airflow channel is provided between the mouthpiece and the atomizing unit. The atomizing unit includes a support (201), a liquid guiding component (202, 203) located in the support, and at least one vertically arranged heating sheet (204). The heating sheet includes a side surface in contact with the liquid guiding component.