Offset Nozzle Flow Application for Grid Material Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In heat treatment processes for grid-shaped materials, non-uniform temperature distribution due to asymmetric gas flow leads to longer treatment times and increased production costs, with existing solutions like reversing flaps being prone to malfunctions and limited pressure capabilities.
Innovation Solution
A device with offset nozzles and outlet channels in two planes, arranged vertically and perpendicularly to the material, ensures a consistent gas flow distribution, maintaining a critical gas speed and preventing dead zones, thereby enhancing heat transfer uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If reversing flaps are installed to reverse flow direction, then temperature uniformity is improved, but reliability deteriorates due to warping and jamming at high temperatures
Solution Approach 1:
The invention extracts the reversing function from mechanical flaps and transfers it to the nozzle arrangement. By positioning nozzles alternately on opposite sides of the material stack, the flow direction is reversed automatically through the offset geometry, eliminating temperature-sensitive moving parts while maintaining temperature uniformity.
Solution Approach 2:
The invention replaces the mechanical reversing flap system with a stationary nozzle arrangement. The flow direction reversal is achieved through the geometric offset of nozzles rather than mechanical movement, eliminating warping and jamming issues associated with high-temperature mechanical components.
2Reliability
If axial fans are used to reverse flow direction, then reliability is improved, but pressure capability deteriorates due to limited peripheral speed at high temperatures
Solution Approach 1:
The invention extracts the flow direction control function from the fan and transfers it to the nozzle arrangement. The offset nozzle positions automatically reverse the flow direction through geometry rather than mechanical rotation, maintaining reliability while enabling higher pressure capability.
3Adaptability or versatility
If asymmetric fan installation is used for flow reversal, then adaptability is improved, but manufacturing precision deteriorates due to different performance levels in two directions
Solution Approach 1:
The invention deliberately uses asymmetric nozzle positioning on opposite sides of the material stack. The offset arrangement creates symmetric flow patterns through the material, ensuring uniform temperature distribution while maintaining the ability to reverse flow direction.
Solution Approach 2:
The invention moves the flow direction control from rotational motion (fan blade angle) to spatial positioning (nozzle offset distance). By positioning nozzles at different lateral positions on opposite sides, the flow direction is controlled in a different dimensional space, achieving symmetric performance.
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 approach ensures even heating of grid-shaped materials, reducing treatment times and minimizing operational costs by maintaining consistent heat transfer without compromising gas flow speed or causing malfunctions.
Implementation Method 1
Forced convection heat transfer always results in the problem of uneven temperature distribution
Implementation Method 2
Heating is usually achieved using a heated gas stream, for example, warm air
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a device for applying a flow to a grid-shaped material arrangement. A gas flow blows onto the material via nozzles that are offset from one another on opposite sides of the grid-shaped material arrangement, so that a flow direction that alternates in direction according to the offset arrangement of the nozzles is created in the spaces between. Outlet channels for the gas flow are provided in at least one plane outside the area of the material.