Induction Tobacco Roaster Cup Structure for Cleanable Filtration

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Solution Overview

Problem

Conventional tobacco roasters face issues with metal cup staining and difficulty in cleaning due to direct contact with tobacco material, and lack of features for preventing granulate inhalation and leakage.

Innovation Solution

A tobacco roaster design incorporating a high frequency heating module with a magnetic induction coil and a movable push rod assembly, featuring a glass cup for tobacco material, a glass cover with air circulation holes, and thermal insulation gaskets, allowing for easy cleaning and granulate filtration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a fixed metal cup is used to accommodate tobacco material, then the heating function is achieved, but the metal cup cannot be removed for cleaning and is easily stained

Engineering Contradiction:
ImprovecleanabilityVSAvoidstructure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The roasting chamber is segmented into a removable metal cup and a fixed housing. The metal cup can be detached from the housing for cleaning, while the housing remains fixed. This segmentation allows the staining-prone metal cup to be separated and cleaned independently without disassembling the entire device.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The metal cup is extracted as a removable component from the fixed housing. The cup can be taken out for cleaning and replacement, while the housing structure remains in place. This extraction solves the cleaning problem by allowing the metal cup to be removed and washed externally.

Inventive Principle:
Principle #2Taking out (Extraction)

2Object-affected harmful factors

If a glass cup is used to accommodate tobacco material, then environmental benefits are achieved by reducing direct metal contact, but the structural complexity increases

Engineering Contradiction:
Improvemetal contactVSAvoidstructure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The glass cup is nested inside the metal cup, creating a dual-cup structure. The glass cup holds the tobacco material and is placed within the removable metal cup, which in turn fits into the fixed housing. This nesting arrangement reduces direct contact between metal and tobacco while maintaining a compact structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Object-affected harmful factors

If a glass cover with through holes is used for air circulation, then filtration of granulates is achieved, but the structural complexity increases

Engineering Contradiction:
Improvegranulate inhalationVSAvoidstructure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The glass cover is designed with multiple through holes that act as a physical filter. As air and vapor pass through these holes during the roasting process, granulates are trapped by the glass surface while allowing breathable vapor to pass through. This porous structure provides filtration without requiring additional filter components.

Inventive Principle:
Principle #31Porous materials

4Temperature

If thermal insulation gaskets are added to the magnetic induction coil, then thermal insulation is improved, but the device complexity increases

Engineering Contradiction:
Improvethermal insulationVSAvoidstructure
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

Silicone thermal insulation gaskets are used to wrap around the magnetic induction coil. These flexible gaskets provide thermal insulation by creating a barrier between the heated coil and surrounding components. The gaskets can be easily installed and removed, providing insulation without complex structural modifications.

Inventive Principle:
Principle #30Flexible shells and thin films

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

Enables easy cleaning of the roaster components, prevents granulate inhalation, and ensures tobacco material does not directly contact the metal cup, maintaining environmental friendliness and preventing leakage.

Implementation Method 1

when an alternating current flows through the magnetic induction coil, an eddy current effect is formed in the metal cup and the metal cup is heated

Methodology Applied
Scientific EffectEddy current: Eddy Currents

Implementation Method 2

The high frequency heating module comprises a metal cup and a magnetic induction coil; when an alternating current flows through the magnetic induction coil, an eddy current effect is formed in the metal cup

Methodology Applied
Scientific EffectMagnetic induction: Electromagnetic Induction

Implementation Method 3

an eddy current effect is formed in the metal cup and the metal cup is heated

Methodology Applied
Scientific EffectResistive heating: Joule Heating

Data Source

PatentEP3960005B1Tobacco roaster
Publication Date: 2026.05.13 SHENZHEN EIGATE TECH CO LTD
  • EP3960005B1 patent drawingFigure 1
  • EP3960005B1 patent drawingFigure 2
  • EP3960005B1 patent drawingFigure 3

AI summary

A tobacco roaster includes a high frequency heating module and a pushing assembly. The high frequency heating module includes a metal cup and a magnetic induction coil. The metal cup is disposed in the magnetic induction coil. When alternating current flows through the magnetic induction coil, an eddy current effect is formed in the metal cup and the metal cup is heated. The pushing assembly includes a push rod disposed below the metal cup. The push rod is movable to push the metal cup out of the tobacco roaster.