Multi-stage Temperature Indicator with Segmented Fusible Rod
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Solution Overview
Problem
Current temperature indicating devices for cooking can only provide a single temperature indication, failing to offer a reliable and accurate multi-stage temperature indication, which is crucial for ensuring food is cooked to precise doneness levels, particularly for determining when a main course will be ready and ensuring it reaches medium temperature without overcooking.
Innovation Solution
A multi-stage temperature indicating device with a segmented stem and fusible materials that soften at different temperatures, allowing for visual indications of multiple temperature stages, including a first intermediate temperature and a second final temperature, enabling users to prepare other dishes while ensuring the main course is cooked to the desired level of doneness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single fusible material is used to retain the indicator rod, then the device structure is simple, but only one temperature indication can be provided
Solution Approach 1:
The indicator rod is divided into multiple segments (first indicator rod segment, second indicator rod segment) that can move independently relative to each other. Each segment is retained by a different fusible material with a different melting temperature, enabling multiple temperature indications while maintaining a relatively simple overall device structure.
2Measurement precision
If multiple fusible materials with different melting temperatures are used, then multiple temperature indications can be provided, but the manufacturing precision requirements increase
Solution Approach 1:
The indicator rod is divided into multiple segments (first indicator rod segment, second indicator rod segment) that can move independently relative to each other. Each segment is retained by a different fusible material with a different melting temperature, enabling multiple temperature indications while maintaining a relatively simple overall device structure.
3Reliability
If the indicator rod is securely retained by fusible material, then the device provides reliable temperature indication, but the indicator rod cannot move to provide visual indication
Solution Approach 1:
The fusible materials are selected with different melting temperatures (first fusible material melts at a lower temperature, second fusible material melts at a higher temperature). As the temperature increases during cooking, the fusible materials transition from a solid retained state to a melted released state at different temperature thresholds, enabling both reliable retention and controlled movement for visual indication.
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 provides precise visual indications of multiple temperature stages, allowing cooks to prepare other dishes while ensuring the main course is cooked to the desired level of doneness, enhancing cooking precision and safety by indicating when the food will reach an acceptable temperature within a specific time.
Implementation Method 1
the fusible material softens, releasing the indicator rod from the barrel
Implementation Method 2
the fusible material must securely retain the indicator rod within the housing until the temperature indicating device has been heated to a predetermined temperature
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3A~3D
AI summary
A multi-stage temperature indicating device having a housing with a bore, closed and open ends, the housing having a first neck region, a first internal cavity between the first neck region and the closed end, a second internal cavity between the first neck region and the open end; an indicator rod; an extension segment with first and second extension stretches that slidably cooperate; the indicator rod and the extension segment; and a fusible material retaining the indicator rod and the extension segment in the housing, wherein different portions of the fusible material soften at different predetermined temperatures; when a first portion of the fusible material softens, a spring urges the indicator rod a first distance out of the housing at a first temperature, when a second portion of the fusible material softens, the spring urges the indicator rod a second distance out of the housing at a second temperature.