Vaporizer device heater control

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Solution Overview

Problem

Vaporizer devices lack integrated power management and heater control solutions that ensure safe and efficient operation, leading to potential overheating, electrical shorts, and inconsistent vapor production.

Innovation Solution

An integrated circuit solution that includes a current source circuit, load switching circuitry, protection circuitry, and power management unit, which provides real-time monitoring and control of voltage, current, and temperature, along with adjustable power delivery and fail-safe mechanisms to prevent overheating and electrical issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If integrated power management and heater control are implemented, then device safety and operation consistency are improved, but device complexity increases

Engineering Contradiction:
Improvedevice safetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines power management functions and heater control functions into a single integrated circuit. This merging of previously separate functions into one unified component improves device safety through coordinated control while managing complexity through integration rather than proliferation of separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated circuit performs multiple functions including power management, heater control, temperature monitoring, and safety protection. This multi-functionality consolidates what would otherwise require multiple separate components, improving reliability while containing device complexity through a single versatile component.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If real-time monitoring and control of voltage, current, and temperature are implemented, then vapor production consistency is improved, but power consumption increases

Engineering Contradiction:
Improvevapor production consistencyVSAvoidpower consumption
Core Design Contradiction:
Stability of the object's compositionVSUse of energy by moving object

Solution Approach 1:

The integrated circuit incorporates real-time monitoring of voltage, current, and temperature with feedback control mechanisms. This feedback enables the system to maintain consistent vapor production by adjusting heater power based on actual operating conditions, while the intelligent control optimizes power usage by only applying heat when and where needed.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts power delivery to the heater based on real-time monitoring of operating parameters. This dynamic control allows the system to maintain consistent vapor production across varying conditions while optimizing power consumption by adapting heater power to actual needs rather than operating at fixed high power levels.

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If fail-safe mechanisms are implemented to prevent overheating and electrical issues, then user safety is improved, but device complexity increases

Engineering Contradiction:
Improveuser safetyVSAvoiddevice complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The integrated circuit incorporates fail-safe mechanisms that proactively prevent overheating and electrical issues before they can harm the user. These mechanisms include temperature monitoring, over-current protection, and short-circuit prevention that act in advance to block harmful conditions, improving user safety while containing complexity through integration.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system includes protection circuitry that provides beforehand cushioning against potential harmful events such as overheating, electrical shorts, and over-current conditions. This prior protection mechanism is built into the integrated circuit, providing safety margins and fail-safe operation without requiring separate complex protection systems.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 solution enhances vaporizer device performance by ensuring safe operation, reducing power consumption, and providing flexible heater control, leading to improved vapor production consistency and user safety.

Implementation Method 1

A typical approach by which a vaporizer device generates an inhalable aerosol from a vaporizable material involves heating the vaporizable material in a vaporization chamber

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

heating the vaporizable material in a vaporization chamber to cause the vaporizable material to be converted to the gas (vapor) phase

Methodology Applied
Scientific EffectVaporization: Evaporation

Implementation Method 3

Certain components of the gas-phase vaporizable material may condense after being vaporized due to cooling and/or changes in pressure to thereby form an aerosol that includes particles of a condensed phase

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentEP3809894B1Vaporizer device heater control
Publication Date: 2023.06.07 JUUL LABS INC
  • EP3809894B1 patent drawingFigure 1A~1C
  • EP3809894B1 patent drawingFigure 1D~1E
  • EP3809894B1 patent drawingFigure 1F~2A

AI summary

A system includes a current source circuit; a system power input; and load switching circuitry coupling the current source circuit and the system power input to an output configured to couple to a vaporizer heating element. The current source circuit, the system power input, and the load switching circuitry form part of an integrated circuit. Related apparatus, systems, techniques, and articles are also described.