Temperature controlled sleeping bag
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Solution Overview
Problem
Existing sleeping bags fail to maintain a comfortable internal temperature due to external temperature variations and body heat fluctuations, often leading to discomfort in varying weather conditions, and their waterproof/airtight designs hinder natural heat exchange.
Innovation Solution
A closed-loop ventilation system integrated into the sleeping bag using flexible air hoses and thermo-electric devices based on the Peltier effect, allowing for adjustable air circulation and temperature control via an external heat exchanger, with a remote control module for user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If waterproof/airtight fabrics are used to withstand external elements, then protection against external environment is improved, but natural heat exchange with external air becomes difficult or impossible
Solution Approach 1:
The sleeping bag is divided into separate functional layers: an outer airtight layer for protection and an inner breathable layer for comfort and heat exchange. This segmentation allows each layer to perform its specific function optimally without compromising the other.
Solution Approach 2:
A breathable membrane is introduced as an intermediary layer between the airtight outer layer and the inner sleeping bag layer. This membrane acts as a mediator that allows water vapor and heat to pass through while maintaining the airtight seal against external elements.
2Object-affected harmful factors
If airtight design is used to maintain internal environment, then protection from external temperature variations is improved, but temperature regulation becomes difficult
Solution Approach 1:
The sleeping bag incorporates a dynamic temperature control system with adjustable vents and openings that allow users to modify the degree of airtightness in real-time. This enables adaptation to changing thermal conditions while maintaining protection from extreme external variations.
Solution Approach 2:
The outer airtight layer serves multiple functions: it provides protection from external elements, maintains internal environment, and works in conjunction with the breathable membrane to enable both heat retention and heat exchange depending on the operational mode selected by the user.
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 system effectively regulates the sleeping bag's internal temperature, providing comfort by circulating cooled or heated air, enhancing user comfort in diverse weather conditions while maintaining efficiency and ease of use.
Implementation Method 1
thermo-electric devices based on the Peltier effect, allowing for adjustable air circulation and temperature control via an external heat exchanger
Data Source
AI summary
A sleeping bag has an electronically adjustable interior temperature by using cooled or heated air created by a heat exchanger based on Peltier effect and connected to the sleeping bag by flexible hoses via interfaces in exterior walls of the sleeping bag for directing the cooled or heated air received from heat exchanger into an interior of the sleeping bag.