Modular Drying Balance Hood for Thermogravimetric Moisture Analysis
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Solution Overview
Problem
Drying balances are difficult to clean due to the accumulation of deposits on the weighing chamber walls, which can lead to contamination of subsequent samples and damage from the heating element.
Innovation Solution
The drying balance is designed with a hood comprising two separate modules: a mechanical module for the weighing chamber walls and a removable electronics module with the heating element, allowing for easy separation and cleaning, with a guide rail system to prevent contact between the heating element and the weighing chamber walls during assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the heating element is integrated into the hood structure, then the device structure is compact and stable, but the weighing chamber becomes difficult to clean due to deposit accumulation on walls and heating element contact points
Solution Approach 1:
The hood is divided into two separate modules: a mechanical module containing the weighing chamber walls and lid, and an electronics module containing the heating element and power unit. This segmentation allows the mechanical module to be easily removed and cleaned separately from the heating element, resolving the contradiction between structural stability and cleaning ease.
Solution Approach 2:
The heating element is extracted from the traditional integrated hood structure and placed in a separate removable electronics module. This extraction eliminates the problem of deposits burning into the hood walls while maintaining the heating function, thereby improving cleaning ease without sacrificing structural stability.
2Device complexity
If the hood is made as a single integrated component, then the device is simpler in structure, but the mechanical complexity increases due to the need for precise alignment during assembly and disassembly
Solution Approach 1:
A guide rail system acts as an intermediary mechanism between the mechanical module and electronics module. The guide rails provide precise alignment paths during assembly and disassembly, reducing the mechanical complexity and skill required while maintaining the benefit of a modular design that is simpler to manufacture and maintain.
3Productivity
If deposits are allowed to accumulate on the weighing chamber walls, then the heating process continues uninterrupted, but subsequent samples become contaminated and measurements are compromised
Solution Approach 1:
The heating element is extracted from contact with the weighing chamber walls by placing it in a separate removable electronics module. This extraction prevents deposits from accumulating on the walls and contaminating subsequent samples, thereby maintaining measurement reliability while allowing uninterrupted heating operations through easy module removal and cleaning.
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 design facilitates easier cleaning and maintenance, preventing contamination and damage, while allowing for efficient heating and reuse of the same base for different applications with varying heating elements.
Implementation Method 1
a heating element, which has an effect on the chamber surrounded by the weighing chamber walls
Implementation Method 2
until the moisture contained in the sample to be weighed has at least partially escaped
Implementation Method 3
Measuring instrument for thermogravimetrically determining the moisture content of a material
Data Source
AI summary
A measuring instrument for thermogravimetrically determining the moisture content of a material, which includes a base (12), configured as a balance, with a base surface (22), and a hood (14) pivotably connected to the base. The hood has a weighing chamber lid (50), weighing chamber walls (52-56) and a heating element (44). The hood consists of an electronics module (36) that includes the heating element and an electronic power unit, and of a mechanical module (48) that includes the weighing chamber lid and all of the weighing chamber walls. The mechanical module (48) is rigidly and reversibly coupled to the electronics module so that the heating element, protrudes from a main body (42) of the electronics module and rises through a corresponding opening (58) in the rearward weighing chamber wall (56), with the main body being pivotably connected to the base and surrounding the electronic power unit.