Flat Wire Heating Coil Layout for Battery Heat Gun Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery-operated hand-held heat guns face inefficiencies in converting electric energy into heat due to limitations in power output, requiring optimal heat transfer between heating elements and air flow.
Innovation Solution
A heating element carrier with spirally wound flat wire heating coils and grooved ceramic parts allows for increased surface area contact with air flow, minimizing heat loss to the carrier and maximizing volume flow, enabling efficient heat transfer and higher power output without the need for cable-based power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If heating elements are threaded into closed hot air ducts, then structural stability is improved, but heat transfer efficiency deteriorates due to reduced air flow volume and contact area
Solution Approach 1:
The heating element carrier is segmented into multiple grooves that extend through the carrier, allowing air to flow through multiple separate channels around the heating elements. This segmentation increases the total air flow volume and contact area between air and heating elements, resolving the contradiction between structural stability and heat transfer efficiency
Solution Approach 2:
The heating elements are arranged in a longitudinal configuration within grooves rather than being threaded through closed ducts. This dimensional change allows air to flow around the heating elements in multiple directions (not just through a single closed path), increasing the effective heat transfer surface area and air flow volume while maintaining structural integrity
2Power
If heating elements have large cross-sectional area, then heat output is improved, but air flow volume and contact area deteriorate
Solution Approach 1:
The heating elements utilize the longitudinal dimension of the carrier by extending grooves through the entire length of the carrier. This allows the heating elements to have sufficient surface area for heat generation while occupying minimal cross-sectional area, enabling both high heat output and large air flow volume to coexist
Solution Approach 2:
The grooves are designed with curved profiles that allow air to flow smoothly around the heating elements. This curvature optimization maximizes the contact area between air and heating elements while minimizing the cross-sectional obstruction to air flow, enabling efficient heat transfer without compromising air flow volume
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 achieves efficient heat transfer and higher power output (up to 1200 watts) in a battery-operated heat gun, reducing material usage and allowing for a cable-free, portable device with improved thermal properties.
Implementation Method 1
heating elements comprise a heating wire with the cross-sectional area A and the cross-sectional perimeter U, where (4πA)/U2 ≤ 0.81
Implementation Method 2
the air flow generated by the heat gun and flowing through the hot air ducts is heated by contact with the heating elements
Data Source
AI summary
A heating element (18) for a heating element carrier (10) of an electrically operated heat gun (100). The heating element carrier (10) is designed to receive the heating elements (18). The heating elements comprise a resistance wire (34) with a cross-sectional surface A and a cross-sectional perimeter U, where (4πA)U2<1.