SAW Pot Lid Temperature Assembly With Bottom Heat Isolation
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Solution Overview
Problem
Existing temperature detection systems for cooking pots require user attention to ensure accurate measurements, as the sensor position must be precisely aligned to avoid interference from the pot's bottom plate, and they often require batteries or electric energy sources.
Innovation Solution
A temperature detection assembly using a Surface Acoustic Wave (SAW) sensor spaced from the bottom of a telescopic bar by a non-heat-conducting material, allowing reliable foodstuff temperature measurement without user intervention, powered by SAW technology and supported by the cooking pot's sidewall, with a lid guide tube for stable arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the temperature sensor is placed close to the lower end of the bar to improve measurement responsiveness, then the temperature detection speed is improved, but the sensor is influenced by the heat from the pot bottom plate causing inaccurate foodstuff temperature measurement
Solution Approach 1:
A non-heat-conducting material is introduced as an intermediary between the temperature sensor and the lower end of the bar. This intermediary blocks heat conduction from the pot bottom plate to the sensor while allowing the sensor to remain positioned for effective temperature detection of the foodstuff, thus resolving the contradiction between detection speed and measurement accuracy.
2Measurement precision
If the user must observe the exact position of the temperature sensor to ensure accurate measurement, then the measurement precision is improved, but the ease of operation deteriorates due to requiring constant user attention
Solution Approach 1:
The temperature detection assembly is designed to self-regulate its positioning through the non-heat-conducting material and the specific spacing from the bar end. The sensor automatically maintains the correct distance from the pot bottom plate without requiring user intervention or observation, making the system self-sufficient and easy to operate while preserving measurement accuracy.
3Reliability
If a battery or electric energy source is added to power the temperature sensor, then the functionality and reliability of the temperature detection system is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent replaces electronic temperature sensing systems that require power sources with a SAW (Surface Acoustic Wave) based temperature sensor. This mechanical/acoustic wave-based sensor detects temperature changes through physical property changes in the acoustic wave propagation, eliminating the need for batteries or external power sources while maintaining reliable temperature detection functionality.
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
Enables reliable temperature measurement of foodstuff inside the cooking pot without user attention to sensor positioning, eliminating the need for batteries or electric energy, and ensuring accurate readings by isolating the sensor from the pot's bottom plate.
Implementation Method 1
a non-heat-conducting material is arranged between the SAW temperature sensor or the heat conducting element, respectively, and the lower end of the bar
Implementation Method 2
The temperature detection assembly (10) includes a surface acoustic wave (SAW) temperature sensor (14)
Data Source
AI summary
The present invention relates to a temperature detection assembly (10) for a cooking pot (24). Said temperature detection assembly (10) comprises a straight and elongated bar (12), at least one SAW (surface acoustic wave) temperature sensor (10) arranged inside a lower end portion of the bar (12), a sensor antenna (16) connected to an upper end of the bar (12), and at least one handle (18) connected to the upper end of the bar (12). The SAW temperature sensor (10) or a heat conducting element connected to said SAW temperature sensor (10) is spaced from a lower end of the bar (12) by a predetermined distance, wherein a non-heat-conducting material is arranged between the SAW temperature sensor (10) or the heat conducting element, respectively, and the lower end of the bar (12). Further, the present invention relates to a lid (20) for a cooking pot (24), wherein the lid (20) is provided for receiving a temperature detection assembly (10) with a straight and elongated bar (12). The lid (20) comprises an elongated guide tube (22) for receiving the bar (12) of the temperature detection assembly (10), wherein an outer diameter of the bar (12) is marginally smaller than an inner diameter the guide tube (22).