Drying Chamber with Rotating Valve for Wearable Electronics
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Solution Overview
Problem
Electronic devices, especially those worn on the human body like hearables and smart watches, face issues with moisture intrusion due to their hygroscopic materials and constant exposure to high humidity from human perspiration, leading to unintended battery shorts and premature battery draining.
Innovation Solution
The development of an apparatus and method involving a drying chamber with a rotating air valve, a pressure-generating device, a moisture-absorbing substance, and sensors that control airflow and humidity levels to effectively dry electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hygroscopic plastics (ABS, polycarbonate, acrylic) are used to manufacture wearable electronic devices, then device strength and durability are improved, but moisture absorption increases
Solution Approach 1:
A desiccant (moisture-absorbing substance) is introduced as an intermediary component within the device housing to absorb moisture that accumulates in the hygroscopic plastics, thereby preventing direct harmful effects of moisture on electronic components while maintaining the structural integrity of the plastic housing
Solution Approach 2:
The device creates a dry, inert environment inside the housing by using the desiccant to maintain low humidity levels, protecting moisture-sensitive electronic components from damage even though the external environment and housing materials are prone to moisture absorption
2Productivity
If heat and vacuum pressure are applied to dry electronic devices with MEMs and diaphragms, then moisture removal is improved, but component damage increases
Solution Approach 1:
The drying method changes the parameters of the drying environment by using ambient temperature and atmospheric pressure instead of high heat and vacuum, thereby removing moisture through controlled airflow and desiccant action without damaging sensitive MEMs and diaphragm components
Solution Approach 2:
The patent replaces the mechanical vacuum system with a passive desiccant-based moisture absorption system combined with controlled airflow, eliminating the need for vacuum pressure while still achieving effective moisture removal from the device
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 solution provides a consistent and reliable method for removing moisture from electronic devices, preventing battery shorts and extending the lifespan of the devices by maintaining them in a dry environment.
Implementation Method 1
pressurized airflow generated by a pressure-generating device
Implementation Method 2
air passing through a moisture-absorbing substance
Data Source
AI summary
Methods and apparatuses for drying electronic devices are disclosed. An exemplary method comprises: placing a portable electronic device into a drying chamber; providing a first air channel, wherein the first air channel connects the drying chamber, a pressure-generating device, and a moisture-reducing device; generating a first air flow through the first air channel using the pressure-generating device; removing a first moisture from an interior of the portable electronic device to an exterior of the portable electronic device; detecting moisture removed from the portable electronic device; pausing the generating the first air flow through the first air channel based on the amount of moisture; providing a second air channel, wherein the second air channel connects the moisture-reducing device, the pressure-generating device, a valve, and an evacuation channel; generating a second air flow through the second air channel using the pressure-generating device; and removing a second moisture from the moisture-reducing device.