Glass Container Production with Solid-State Microwave Heating
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Solution Overview
Problem
Existing glass container production methods using open flames for heating are inefficient, environmentally harmful, and lack precise control, leading to high energy consumption and poor production quality.
Innovation Solution
A microwave heating system with adjustable power levels is used to heat glass containers, allowing for precise and efficient heating by modulating power delivery to achieve desired temperatures quickly and cost-effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If open flame heating is used, then heating capability is achieved, but energy efficiency deteriorates and environmental impact increases
Solution Approach 1:
The patent replaces the mechanical/chemical open flame heating system with a microwave electromagnetic field-based heating system. The microwave heating device uses electromagnetic radiation to directly heat the glass material, eliminating the need for combustion and associated energy losses. This substitution resolves the contradiction by providing effective heating while dramatically improving energy efficiency and reducing environmental impact.
Solution Approach 2:
The patent changes the heating mechanism from thermal conduction/convection (open flame) to electromagnetic radiation (microwave). By altering the fundamental heating parameter from temperature-based thermal transfer to frequency-based electromagnetic energy transfer, the system achieves more efficient heating with better energy utilization and reduced environmental harm.
2Temperature
If open flame heating is used, then heating capability is achieved, but manufacturing precision deteriorates due to lack of control
Solution Approach 1:
The patent incorporates feedback control mechanisms in the microwave heating system, where sensors monitor the heating process parameters and the control system adjusts microwave power delivery in real-time. This feedback loop enables precise control of heating temperature and duration, resolving the contradiction by providing both effective heating and high manufacturing precision through automated regulation.
Solution Approach 2:
The patent employs dynamic adjustment of microwave power levels during the heating process. The system can modulate power delivery based on real-time conditions, allowing for precise control of temperature profiles. This dynamic control capability enables the system to achieve both effective heating and high precision manufacturing by adapting to varying material properties and process requirements.
3Productivity
If microwave heating at high power is used, then productivity improves, but manufacturing precision deteriorates due to uncontrolled overheating
Solution Approach 1:
The patent employs periodic or pulsed microwave heating rather than continuous high-power heating. By applying microwave energy in controlled pulses with adjustable duty cycles, the system achieves rapid heating (improving productivity) while preventing uncontrolled overheating (maintaining precision). The periodic action allows heat to be applied intensively when needed while providing natural cooling periods, resolving the contradiction between speed and precision.
Solution Approach 2:
The patent uses dynamic power adjustment where the microwave power level is continuously or periodically modulated based on real-time temperature feedback. This dynamic control allows the system to deliver high power for rapid heating when temperature is low, then reduce power as temperature increases, maintaining precision while achieving high productivity through optimized power timing.
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 microwave heating system enables controlled and efficient glass processing suitable for high-speed production, reducing costs and environmental impact while maintaining production quality.
Implementation Method 1
M heating devices respectively comprise M microwave sources
Implementation Method 2
a laser source creates localized heating zones that bring the glass to the melting temperature where the dielectric loss factor is suddenly increased and direct heating by the microwaves takes place
Data Source
AI summary
A glass container production line includes N workstations configured to perform respective production steps on glass containers being processed along the line, wherein Nis an integer at least equal to 1; M heating devices associated with at least a part of the N workstations to heat portions of the glass containers being processed, wherein M is an integer at least equal to 1; wherein the M heating devices respectively comprise M microwave sources and M adjustment units operatively associated with the M microwave sources, each of the M adjustment units being configured to adjust in power the respective microwave source; wherein the M microwave sources are microwave generators of the solid-state type; and wherein the M adjustment units are configured to adjust a power of the respective M microwave sources with an adjustment time of less than 100 ms. An associated glass container production process is also described.