Roasting Probe Structure for Circuit Stability and Heat Isolation
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Solution Overview
Problem
Conventional roasting probes are prone to circuit board damage due to wobbling when knocked or fallen, leading to a reduced service life.
Innovation Solution
A roasting probe design featuring a probe head tube, circuit board with limit parts, NTC thermistor, antenna, and a ceramic holding tube, which includes a connection tube, probe pin tube with shrunk and cone-shaped sections, and a detachable ceramic holding tube to reduce heat transmission and stabilize the circuit board, improving Bluetooth signal transmission and extending the probe's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board is freely installed in the connection tube, then the installation process is simple, but the circuit board wobbles when knocked or fallen, causing damage and reducing service life
Solution Approach 1:
The patent introduces a fixing structure consisting of fixing protrusions on the circuit board that engage with the inner wall of the connection tube. This intermediary mechanism mediates between the circuit board and the connection tube, preventing wobbling while maintaining a relatively simple installation process. The fixing protrusions act as the intermediary element that transfers and stabilizes the circuit board position without requiring complex assembly procedures.
2Strength
If the probe pin tube is made of metal, then the structural strength is high, but the heat transmission to the circuit board is excessive, affecting measurement precision
Solution Approach 1:
The patent extracts the heat conduction function from the probe pin tube by using a thermal insulation structure. The connection tube is designed with thermal insulation properties to separate the heat transmission path from the circuit board, while the probe pin tube itself maintains its metal construction for structural strength. This extraction of the heat conduction function prevents excessive heat from reaching the circuit board, thereby preserving measurement precision.
3Reliability
If the antenna is exposed outside the probe, then the Bluetooth signal transmission is strong, but the signal is blocked when the probe is inserted into food, reducing the effective working range
Solution Approach 1:
The patent embeds the antenna within the connection tube structure, creating a nested arrangement where the antenna is housed inside the tubular structure. This nesting allows the antenna to remain protected and positioned optimally for signal transmission, while the tubular structure of the connection tube provides a pathway for the Bluetooth signal to pass through when the probe is inserted into food, maintaining adaptability across different usage scenarios.
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 design stabilizes the circuit board, reduces heat transmission, and enhances Bluetooth signal range, thereby improving measurement precision and extending the probe's service life.
Implementation Method 1
An end of the circuit board away from probe pin tube is provided with a communication circuit. The NTC thermistor is connected to an end of circuit board facing probe pin tube and located inside transition section
Implementation Method 2
The holding tube is made of ceramic and detachably provided at an end of the connection tube away from the probe pin tube
Data Source
AI summary
A roasting probe includes a probe head tube, a circuit board, a NTC thermistor, an antenna and a holding tube. The probe head tube includes a connection tube and a probe pin tube. The probe pin tube includes a shrunk portion, a transition portion and a cone-shaped portion that are consequently connected. The shrunk portion is connected to connection tube. The circuit board is provided with a limit part and is limited and provided in connection tube. An end of the circuit board away from probe pin tube is provided with a communication circuit. The NTC thermistor is connected to an end of circuit board facing probe pin tube and located inside transition section. The holding tube is made of ceramic and detachably provided at an end of connection tube away from probe pin tube. The antenna is electrically connected to communication circuit and located inside holding tube.