Waterproof Wireless Thermometer Dual Hermetic Shell Design
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Solution Overview
Problem
Conventional electronic thermometers are not suitable for continuous use in high-temperature cooking environments due to temperature limitations, requiring frequent insertion and removal, which is inconvenient and may lead to overcooking, and existing wireless thermometers are cumbersome and prone to damage from liquids and high temperatures.
Innovation Solution
A waterproof wireless thermometer with a two-layer hermetic shell and high-temperature components, including a rechargeable battery and thermal sensors, that can withstand repeated heating and cooling cycles, allowing it to be used in various cooking methods and transmit temperature data wirelessly to a computing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electronic thermometer is used to measure food temperature, then temperature measurement is achieved, but the thermometer cannot withstand high cooking temperatures and must be frequently removed
Solution Approach 1:
The thermometer is divided into two separate parts: a temperature sensing probe that can be placed inside the food and a control unit with display and battery that remains outside the cooking vessel. This segmentation allows the sensing probe to withstand high temperatures while the electronic components remain in a cooler environment, resolving the contradiction between measurement capability and temperature resistance.
Solution Approach 2:
An electrical wire acts as an intermediary connection between the temperature sensing probe inside the cooking vessel and the control unit outside. This intermediary allows continuous temperature monitoring without requiring the electronic components to be exposed to high cooking temperatures, enabling reliable continuous use.
2Reliability
If a wired thermometer is used to enable continuous temperature monitoring, then measurement reliability is improved, but the device becomes cumbersome and cannot be used in rotating cooking vessels
Solution Approach 1:
The electrical wire connection is replaced with a wireless communication system. The temperature sensing probe transmits data wirelessly to the control unit, eliminating the physical constraint of the wire. This allows the probe to be freely positioned inside rotating cooking vessels or moved between different foods without being restricted by a cable, while maintaining continuous monitoring capability.
3Ease of manufacture
If a waterproof thermometer is used to enable cleaning in dishwasher, then ease of maintenance is improved, but the thermometer may be damaged by leaking water, oil or mixture during cooking
Solution Approach 1:
The temperature sensing probe is designed as a disposable or easily replaceable component with a simple waterproof structure. If the probe becomes damaged or contaminated during cooking, it can be discarded or replaced without affecting the main control unit. This allows the use of basic waterproofing that can withstand dishwasher cleaning while protecting the expensive electronic components from exposure to cooking liquids.
Solution Approach 2:
The electronic components (battery, display, processing unit) are extracted from the temperature sensing probe and placed in a separate control unit that remains outside the cooking vessel. Only the simple waterproof probe enters the cooking environment, minimizing the risk to expensive electronics while maintaining the ability to clean the probe in a dishwasher.
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 continuous, accurate temperature monitoring of food during cooking without the need for frequent insertion and removal, maintaining waterproof functionality and durability, even in harsh cooking conditions like deep frying or sous vide, thus ensuring precise cooking and ease of use.
Implementation Method 1
at least one thermal sensor configured to measure the internal temperature of the food
Implementation Method 2
The waterproof thermometer comprises a conductive unit, a rechargeable battery, a circuit board, at least one thermal sensor, a processing unit, an antenna, and a housing. The housing comprises a first hermetic shell and a second hermetic shell
Implementation Method 3
The housing comprises a first hermetic shell and a second hermetic shell
Data Source
AI summary
A waterproof thermometer for monitoring a food temperature during a cooking process includes a rechargeable battery for supplying power, a thermal sensor for measuring the food temperatures, and a processing unit for wirelessly transmitting data via an antenna. The waterproof thermometer further includes a first conductive part for containing the thermal sensor, the processing unit, and the rechargeable battery, a first insulating part for containing the antenna, a second insulating part, and a second conductive part. The first insulating part is surrounded by the second insulating part, and separated from the second insulating part by an air filled gap. The first conductive part, the first insulating part and the second conductive part form a first hermetic shell for providing waterproof function. The first conductive part, the second insulating part, and the second conductive part form a second hermetic shell for providing protection to the first insulating part from being damaged.