Atomizer Refill Tube Sealing With Exhaust Gap to Prevent Leakage

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Solution Overview

Problem

Electronic cigarettes pose a risk of accidental ingestion of smoke oil by children and leakage due to air pressure during refilling, as the cigarette holder can be easily opened and air pressure can cause overflow.

Innovation Solution

An atomization device with a liquid storage cavity, an injection structure featuring an injection tube and sealing member, and an exhaust gap between the injection tube and the liquid injection opening, which balances air pressure and prevents overflow by allowing air to escape, and a reset mechanism to ensure the sealing member seals properly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cigarette holder is made openable for refilling, then the ease of operation is improved, but the safety is worsened due to children accessing smoke oil

Engineering Contradiction:
Improverefilling operationVSAvoidaccidental ingestion by children
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The device is divided into a replaceable cartridge containing smoke oil and a separate holder. The cartridge can be easily detached and replaced, eliminating the need to open the holder for refilling. This segmentation maintains ease of operation while preventing child access to smoke oil.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The smoke oil storage function is extracted from the holder and placed in a separate, disposable cartridge. This extraction allows the holder to remain closed and secure, while refilling is achieved by simply replacing the entire cartridge, thus solving both safety and ease of operation requirements.

Inventive Principle:
Principle #2Taking out (Extraction)

2Productivity

If air pressure is increased during injection, then the productivity is improved, but the reliability is worsened due to smoke oil leakage

Engineering Contradiction:
Improveinjection speedVSAvoidleakage prevention
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

An exhaust passage is pre-established in the sealing structure before injection begins. This preliminary action provides a predetermined escape route for air, preventing pressure buildup that would cause leakage during high-speed injection, thus maintaining both productivity and reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The exhaust passage acts as an intermediary channel between the injection system and the external environment. It mediates the pressure balance by allowing controlled air escape, enabling high-pressure injection without causing smoke oil leakage through the sealing interface.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the sealing member is made tight to prevent leakage, then the reliability is improved, but the air pressure balance is worsened during injection

Engineering Contradiction:
Improvesealing performanceVSAvoidair pressure balance
Core Design Contradiction:
ReliabilityVSStress or pressure

Solution Approach 1:

The sealing system is segmented into a primary sealing member for preventing leakage and a separate exhaust passage for pressure relief. This segmentation allows the sealing member to maintain tight sealing for reliability while the exhaust passage manages air pressure balance during injection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The exhaust passage serves as an intermediary pressure relief mechanism that works in conjunction with the tight sealing member. It provides a controlled path for air escape without compromising the sealing performance, thus resolving the contradiction between sealing tightness and pressure balance.

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

The solution effectively prevents smoke oil leakage and accidental ingestion by ensuring the smoke oil is injected safely and securely, maintaining air pressure balance within the device, thus enhancing safety and usability.

Implementation Method 1

the air in the liquid storage cavity can run out from the electronic cigarette through the exhaust gap, thus, it can balance the air pressure inside and outside the liquid storage cavity

Methodology Applied
Scientific EffectAir pressure balance: Pressure Gradient

Implementation Method 2

the sealing member is sealed from an inner wall of the liquid storage cavity, and separates the liquid inlet from the liquid storage cavity

Methodology Applied
Scientific EffectSealing: Physical Containment

Implementation Method 3

the liquid inlet moves into the liquid injection opening to communicate with the liquid storage cavity

Methodology Applied
Scientific EffectFluid flow: Pressure Gradient

Data Source

PatentUS10893706B2Atomization device and electronic cigarette with the same
Publication Date: 2021.01.19 SHENZHEN SMOORE TECH LTD
  • US10893706B2 patent drawing
  • US10893706B2 patent drawing
  • US10893706B2 patent drawing

AI summary

The present disclosure provides an atomization device including a liquid storage cavity, a liquid injection opening, and an injection structure; the injection structure includes an injection tube and a sealing member; the injection tube runs through the liquid injection opening and extends into the liquid storage cavity, and a liquid inlet is formed in a side wall of the injection tube; the sealing member is arranged on one end of the injection tube in the liquid storage cavity; the sealing member is sealed from an inner wall of the liquid storage cavity, and separates the liquid inlet from the liquid storage cavity. When the injection tube is pushed into the liquid storage cavity, the liquid inlet moves into the liquid injection opening to communicate with the liquid storage cavity. When the injection tube is not pushed, the injection tube separates the liquid inlet from the liquid storage cavity.