PCB Heater for Rapid Volatile Substance Evaporation
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Solution Overview
Problem
Existing devices for evaporating volatile substances, such as fragrances and insecticides, suffer from slow evaporation rates due to high thermal mass heaters, require direct current sources increasing costs, and lack automatic fragrance regulation leading to user habituation.
Innovation Solution
A device featuring a heater with low thermal mass, constructed from a printed circuit board with resistors and copper areas, which rapidly heats a flat wick impregnated with volatile substances. This setup allows for rapid temperature increase, elimination of direct current requirements, and automatic fragrance intensity control through microcontroller-controlled heating cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional ceramic heaters or metallic resistors with high thermal mass are used, then the heater can provide stable heat, but the temperature increase is slow and evaporation rate is low
Solution Approach 1:
The patent extracts the heating function from traditional high thermal mass heaters (ceramic or metallic resistors) and implements it using a printed circuit board with resistive traces. This removes the excessive thermal mass while retaining the heating capability, enabling rapid temperature increase and fast evaporation startup.
Solution Approach 2:
The patent changes the physical parameters of the heater by using a printed circuit board design with controlled resistive traces. This allows precise control of heating parameters and reduces thermal mass while maintaining effective heat transfer to the wick, achieving both rapid heating and controlled evaporation.
2Productivity
If direct current power source is used to accelerate temperature, then evaporation speed increases, but product cost increases substantially
Solution Approach 1:
The patent implements dynamic control of the heating process through programmable working cycles that can be executed with standard alternating current power sources. The microcontroller manages variable heating patterns to optimize evaporation rates without requiring expensive direct current power sources or large battery capacitors.
Solution Approach 2:
The patent changes the operational parameters by using alternating current with controlled heating cycles instead of direct current. This approach achieves rapid evaporation through intelligent cycle management rather than through expensive power source conversion, reducing product cost while maintaining high productivity.
3Adaptability or versatility
If alternating current heater with manual regulation is used, then device cost is low, but users become accustomed to constant fragrance release
Solution Approach 1:
The patent implements self-service through automatic regulation controlled by a microcontroller. The system autonomously manages heating cycles and fragrance release patterns without requiring manual user interaction, while still providing variable intensity options. This prevents user habituation to constant fragrance release while keeping the device simple to operate.
Solution Approach 2:
The patent introduces dynamic fragrance release through programmable working cycles that automatically vary intensity. This provides adaptability in fragrance delivery patterns while eliminating the need for manual mechanical regulation, combining versatility with ease of operation.
4Strength
If cylindrical wicks are used in alternating current devices, then structure is simple, but heat transfer from heat source is not optimized
Solution Approach 1:
The patent transitions from traditional cylindrical wicks to flat planar wick structures. This dimensional change increases the surface area in contact with the printed circuit board heater, optimizing heat transfer efficiency while maintaining structural simplicity and compatibility with the PCB-based heating element.
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 device achieves rapid evaporation of volatile substances, reduces costs by eliminating the need for direct current sources, and prevents user habituation through variable fragrance intensity control.
Implementation Method 1
a heater which heats a wick impregnated with said volatile substances and is characterised in that said heater is formed from a printed circuit board provided with at least one resistor
Implementation Method 2
the device for evaporating volatile substances, presenting other advantages which will be described below... allows a rapid acceleration of the temperature of the wick
Data Source
AI summary
The device for evaporating volatile substances comprises a heater (1) which heats a wick (2) impregnated in said volatile substances and characterised in that said heater (1) is formed from a printed circuit board (10) provided with at least one resistor (11).It allows a device for evaporating volatile substances to be provided which comprises a heater with a very low thermal mass which allows a rapid increase in the temperature and variation of the working cycles.