Backpack Cooling System with Segmented Fans
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Solution Overview
Problem
Users experience heat buildup when wearing backpack-type assemblies due to contact with the base member, leading to discomfort.
Innovation Solution
Incorporation of a cooling system with cooling fans and ports in the backpack-type assembly, allowing for airflow to circulate and dissipate heat away from the user's body, including the use of cooling fans on shoulder and waist belts and back pads, with an optional external power supply for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a base member is attached to the body and worn on the user, then the backpack-type assembly can be worn and carried, but heat builds up at the contact portion and the user feels hot
Solution Approach 1:
The base member is divided into multiple contact portions (back pad, shoulder belts, waist belt) with cooling fans distributed at each segment. This segmentation allows cooling air to be delivered to multiple heat-prone areas simultaneously, effectively reducing heat buildup across the entire contact surface while maintaining the structural integrity and wearability of the backpack assembly
Solution Approach 2:
A cooling air supply unit is introduced that delivers cooled air through ducts to cooling holes in the contact portions of the base member. This pneumatic system circulates cooling air through the contact areas, actively removing heat from the user's body at the interface between the backpack and the user, thereby reducing heat buildup while preserving the backpack's wearable structure
2Temperature
If cooling fans are added to circulate cooling air, then heat buildup is reduced, but the device complexity increases
Solution Approach 1:
The cooling air supply unit serves multiple functions: it cools the back pad, shoulder belts, and waist belt simultaneously through a single centralized system. The cooling fans are integrated into the existing harness structure, and the same air supply unit provides cooling to multiple contact portions, reducing the need for separate cooling systems for each component and thereby limiting the increase in overall device complexity
Solution Approach 2:
The cooling fans are embedded within the structure of the back pad, shoulder belts, and waist belt, with cooling holes integrated into the contact surfaces. The ducts are routed through the internal structure of the base member, nesting the cooling system components within the existing backpack framework. This nesting approach minimizes additional external complexity while achieving effective heat reduction at the contact portions
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
Effectively reduces heat buildup and discomfort by circulating cooling air along the user's body surfaces, maintaining comfort during wear.
Implementation Method 1
The cooling fan may be configured to circulate cooling air into or out of the base member through the cooling port of the base member
Data Source
AI summary
A backpack-type assembly may include: a body; and a base member including a cooling port. The base member may include: a back plate attached to the body; and a harness attached to the back plate and configured to be worn on a user. The harness may include: at least one shoulder belt configured to be worn on a shoulder of the user; and a cooling fan. The cooling fan may be configured to circulate cooling air into or out of the base member through the cooling port of the base member.