Gas Hot Air Gun Head With Offset Plates to Contain Flame
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Solution Overview
Problem
Gas hot air tools often discharge hot air in a straight line, causing combustion flames to extend beyond the outlet and pose safety risks of accidental burns and damage.
Innovation Solution
A gas hot air gun head design featuring a flow-guiding device with a combustor and spinning vortex of hot air, utilizing first and second flow-guiding plates with offset holes to prevent flame extension and increase air temperature through spinning hot air discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot air is discharged in a straight line for efficient heating, then heating efficiency is improved, but combustion flames stretch out of the outlet causing safety hazards
Solution Approach 1:
The flow-guiding device segments the hot air flow into multiple directional streams using divided flow channels and multiple outlet nozzles arranged in different directions, preventing concentrated straight-line discharge and flame extension while maintaining heating effectiveness
Solution Approach 2:
The flow channels and outlet nozzles are designed with asymmetric directional arrangements, directing hot air at various angles rather than in a single straight line, which disperses the flame and prevents it from extending beyond the outlet in a dangerous direction
2Object-affected harmful factors
If flow-guiding plates with holes are added to control flame direction, then flame safety is improved, but device complexity increases
Solution Approach 1:
The flow-guiding plates serve multiple functions simultaneously: they guide flame direction through their hole patterns, structure the hot air flow channels, and define the combustion chamber geometry, thereby controlling flame safety without proportionally increasing device complexity
Solution Approach 2:
The flow-guiding plates incorporate multiple holes creating a porous-like structure that directs and disperses the hot air and flame flow, achieving flame control through the inherent flow-guiding properties of the perforated plate design rather than additional complex mechanisms
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 effectively prevents combustion flames from stretching out, enhancing safety and increasing the temperature of the hot air output by creating a spinning vortex of hot air, thereby improving combustion efficiency.
Implementation Method 1
first and second flow-guiding plates with offset holes to prevent flame extension and increase air temperature through spinning hot air discharge
Implementation Method 2
combustor including a combustion chamber extending therethrough
Data Source
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AI summary
A gas hot air gun head (10) includes a fuel supply device (20) engagable with a gas reservoir (90) and having a fluid inlet end (21), a fluid outlet end (22) and a channel (23) extending from the fluid inlet end to the fluid outlet end. Further, a flow-guiding device (30) connects to the fluid outlet end of the fuel supply device and includes a combustor (31). The combustor connects to the fuel supply device. The combustor includes a combustion chamber (313) extending therethrough. The combustion chamber includes first and second flow-guiding plates (34, 35) engaging therein and separating from each other in an axial direction. The first flow-guiding plate includes a plurality of first holes (341) extending therethrough. The second flow-guiding plate includes a plurality of second holes (351) extending therethrough. A centerline of one of the plurality of first holes offsets from centerlines of the plurality of second holes.