Curved Reflector for Drum Dryer Heat Distribution
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Solution Overview
Problem
In print drying systems, the drum dryer's surface often heats unevenly due to environmental factors, leading to decreased heat efficiency and poor drying performance, as well as maintenance challenges and energy efficiency losses.
Innovation Solution
The implementation of reflectors with angled or curved profiles at the drum's lateral ends to redistribute radiant energy, ensuring even heat distribution across the drum's surface, improving heat control and accessibility for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a radiant energy source is placed inside the drum to heat the drum surface for drying ink, then drying effectiveness is improved, but uneven heat distribution occurs across the drum surface
Solution Approach 1:
The reflector is designed with varying angles or curvature across its surface, where different regions of the reflector redirect radiant energy to different regions of the drum. This creates locally optimized heat distribution, ensuring that areas of the drum that would otherwise receive excessive heat get redirected heat from cooler areas, achieving uniform overall temperature distribution.
Solution Approach 2:
The reflector acts as an intermediary component between the radiant energy source and the drum surface. Instead of the radiant energy source directly heating the drum, the reflector first intercepts and redirects the radiant energy, mediating the heat transfer process to achieve more uniform distribution across the drum surface.
2Use of energy by moving object
If the drum structure is enclosed to contain radiant energy for heating, then heat efficiency is improved, but accessibility for maintenance operations deteriorates
Solution Approach 1:
The reflector is designed with movable or adjustable components that can be repositioned or removed to provide access to the radiant energy source and internal drum components during maintenance operations. After maintenance, the reflector is restored to its operational position to maintain heat efficiency, thus dynamically adapting between operational and maintenance states.
Solution Approach 2:
The reflector structure is divided into segmented or modular sections that can be independently removed or adjusted. This segmentation allows maintenance personnel to access specific areas of the drum or radiant energy source by removing only the necessary reflector segments, rather than disassembling the entire enclosed structure, thereby maintaining both heat efficiency and maintenance accessibility.
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 solution enhances heat efficiency and drying performance by maintaining a consistent heat profile, improving the accessibility and operational efficiency of the drum dryer, and reducing energy losses.
Implementation Method 1
The outer portion includes a reflective surface that reflects radiant energy from the lateral end to the central portion of the drum in contact with the web
Implementation Method 2
The drum is also configured to receive a radiant energy source disposed inside the drum that extends between each lateral end of the drum in the lateral direction
Data Source
AI summary
Systems and methods for evenly heating a drum dryer of a print system. In one embodiment, the dryer is configured to rotate about an axis oriented in a lateral direction, to receive a radiant energy source disposed inside the drum that extends between each lateral end of the drum in the lateral direction, and to receive a reflective assembly inside the drum that includes an inner portion and an outer portion. The inner portion surrounds the radiant energy source and removably attaches the reflective assembly to a lateral end of the drum. The outer portion extends from the inner portion in a radial direction of the drum that is perpendicular to the lateral direction. The outer portion includes a reflective surface that reflects radiant energy from the lateral end to the central portion of the drum in contact with the web.