Independent Microwave Heating of Samples in Digestion Holders
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Solution Overview
Problem
Current digestion systems for multiple samples are either time-consuming due to the need to heat samples sequentially or face challenges with pressure management, leading to inefficiencies and potential damage during concurrent heating processes.
Innovation Solution
A heating system with multiple microwave applicators and a control unit that allows for independent heating of each sample recipient within a sample holder, forming mini microwave cavities and managing pressure through a pressure-relief valve mechanism, enabling concurrent and efficient heating of multiple samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple samples are heated concurrently in a multi-sample holder, then productivity is improved, but pressure management becomes difficult and damage risk increases
Solution Approach 1:
The heating system is segmented into multiple independent microwave applicators, each with its own control unit and heating zone. This allows each sample recipient to be heated independently with separate pressure management, resolving the contradiction by enabling concurrent heating while maintaining individual pressure control for each sample to prevent damage.
Solution Approach 2:
The system employs dynamic control where each microwave applicator and pressure-relief valve operates independently based on real-time conditions of each sample recipient. This dynamic adaptation allows the system to maximize productivity through concurrent heating while maintaining safety through responsive, individualized pressure management for each sample.
2Reliability
If a single sample holder is used for sequential heating, then pressure management is simplified, but time consumption increases
Solution Approach 1:
The system divides the heating function into multiple independent microwave applicators within a single sample holder, allowing simultaneous heating of multiple samples while maintaining simplified pressure management through individual pressure-relief valves for each recipient, thus resolving the time-pressure management contradiction.
Solution Approach 2:
The system merges multiple heating zones and pressure management systems into a single integrated sample holder platform, enabling concurrent processing of multiple samples while maintaining the simplicity of individual pressure control, thereby reducing total digestion time without complicating pressure management.
3Adaptability or versatility
If generic racks with multiple open-ended recipients are used, then adaptability is improved, but ease of operation deteriorates due to manual sealing cap manipulation
Solution Approach 1:
The system employs automatic sealing mechanisms where the microwave applicators or integrated components automatically seal the open-ended recipients before heating, eliminating the need for manual sealing cap manipulation. This self-service approach maintains adaptability to different recipient types while dramatically improving ease of operation.
Solution Approach 2:
The system introduces an intermediary sealing mechanism that automatically interfaces between the generic rack structure and the microwave heating process, eliminating manual manipulation steps. This intermediary component maintains versatility with different recipient types while automating the sealing process to improve operational ease.
4Manufacturing precision
If independent heating control for each sample is implemented, then manufacturing precision of heating process is improved, but device complexity increases
Solution Approach 1:
The system segments the heating control into multiple independent microwave applicators, each with its own control unit. This segmentation enables precise independent control of heating parameters for each sample recipient, achieving high manufacturing precision in the heating process while distributing the complexity across modular, manageable components.
Solution Approach 2:
The system employs dynamic control where each microwave applicator's power and timing are independently adjustable based on specific sample requirements. This dynamic capability achieves precise heating control for each sample while the modular architecture manages device complexity through standardized, interchangeable control units.
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 allows for simultaneous and efficient heating of multiple samples while managing pressure, reducing the time required for digestion processes and preventing damage from excessive pressure, thereby improving the throughput and safety of sample processing.
Implementation Method 1
at least two microwave applicators inside the heating chamber, each of the at least two microwave applicators comprising a microwave generator and an oven cavity portion which is a partial mini cavity adapted to mate with a complementary partial mini cavity portion provided on the sample holder for creating a mini microwave cavity around a single sample recipient in the sample holder, and for applying microwaves generated by the corresponding microwave generator directly to the single sample recipient
Data Source
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AI summary
There is described a heating system for independently heating at least one sample recipient containing a sample, the sample recipient provided in a sample holder, comprising: a heating chamber having at least one opening and adapted to receive the sample holder; at least one microwave generator for generating microwaves; at least one microwave applicator inside the heating chamber connected to the at least one microwave generator, the at least one microwave applicator comprising an oven cavity portion for creating a mini microwave cavity around a single sample recipient in the sample holder, and for applying microwaves generated by the at least one microwave generator directly to the single sample recipient; and a control unit for controlling the at least one microwave generator.