Multi-Cavity Microwave Coffee Tablet Formation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing tablets for liquid food products, such as coffee, are limited by low productivity and high energy consumption, as they require individual processing and manual steps for moistening and homogenization, which increases production time and costs.
Innovation Solution
A system and method that uses a multi-cavity forming device and a multimode microwave oven to simultaneously process multiple dosed amounts of precursor, with selective surface moistening and irradiation, allowing for continuous production of tablets with a self-supporting structure and reduced energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual processing of tablets is used, then tablet quality can be controlled, but productivity is limited
Solution Approach 1:
The forming device is divided into multiple cavities (first cavity, second cavity, etc.) that can simultaneously form multiple tablets. Each cavity is equipped with its own dosing unit and compression device, allowing parallel processing of multiple tablets at the same time, thereby increasing productivity without requiring complex individual processing for each tablet.
Solution Approach 2:
Multiple processing operations (moistening, homogenizing, dosing, forming, compressing) are merged into a single integrated forming device that handles multiple cavities simultaneously. The microwave generator can irradiate multiple cavities at once, combining what would otherwise be separate individual processing steps into one unified high-capacity operation.
2Productivity
If manual moistening and homogenizing steps are used, then tablet uniformity is achieved, but production time increases
Solution Approach 1:
The dosing units are pre-configured with precise amounts of precursor material, and the forming cavities are pre-prepared with the correct geometry and positioning. This preliminary preparation eliminates the need for manual measurement and adjustment during processing, allowing rapid automated filling and forming operations that reduce overall processing time while maintaining quality.
Solution Approach 2:
Manual moistening and homogenizing operations are replaced with automated systems that use controlled liquid delivery and mechanical mixing within the forming cavities. The compression devices and microwave irradiation systems provide automated thermal and mechanical processing, eliminating time-consuming manual steps while ensuring consistent tablet uniformity.
3Productivity
If high power microwave irradiation is used, then tablet formation is efficient, but energy consumption increases
Solution Approach 1:
The microwave irradiation is applied locally and selectively to each cavity containing a tablet, rather than heating the entire forming device uniformly. The microwave generator can be positioned to direct energy precisely where needed, and the irradiation time and power can be optimized for each specific cavity, reducing overall energy consumption while maintaining efficient tablet formation.
Solution Approach 2:
The microwave irradiation is applied in controlled periodic cycles rather than continuous high-power heating. The system can alternate between irradiation phases and cooling or preparation phases, allowing heat to distribute uniformly through the tablet material while preventing energy waste from prolonged high-power exposure, thus improving efficiency relative to energy consumption.
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 approach significantly enhances productivity and reduces energy consumption while maintaining high-quality tablet production, allowing for efficient and rapid production of large quantities of tablets with improved organoleptic properties.
Implementation Method 1
a microwave generator connected to a relative antenna, for directing a fixed-frequency microwave beam to the hollow body
Implementation Method 2
cause an overheating and/or a sintering of the precursor, thereby obtaining a tablet having a relatively compact and self-supporting structure
Data Source
AI summary
In a method for producing tablets for extraction of a liquid food product, a plurality of dosed amounts of a moistened powder ingredient are loaded into respective forming cavities of a multi-cavity forming device, the multi-cavity forming device is then introduced into a multimode cavity of a microwave oven, and thereafter the multi-cavity forming device is removed from the multimode cavity. The multimode cavity is prearranged in such a way that an irradiation of the microwaves thereinto causes heating of all dosed amounts of the ingredient in the respective forming cavities of the multi-cavity forming device, to form simultaneously a plurality of tablets each having a self-supporting structure.