Drying Apparatus Heat Insulating Layer Dew Condensation
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Solution Overview
Problem
Drying apparatuses in printing systems often face issues with dew condensation due to temperature differences, leading to condensation and potential contamination of printed matter.
Innovation Solution
A drying apparatus with a heating mechanism, air sending path, and air blower that minimizes condensation by using a heat insulating layer and inside layer to suppress ventilation, ensuring that water vapor does not enter the heat insulating layer, and an air blower that accelerates evaporation while maintaining efficient heat reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the temperature in the housing is raised by heating to dry printed matter, then drying efficiency is improved, but dew condensation occurs in the housing due to temperature difference from the outside
Solution Approach 1:
The housing is divided into multiple thermal zones using heat insulating layers and heat transmitting layers. The air sending path is segmented into a heat insulating region (surrounding the heating mechanism) and a heat transmitting region (facing the printed matter), allowing different thermal functions in different spatial segments to simultaneously achieve efficient drying and prevent condensation
Solution Approach 2:
Different portions of the housing have different thermal properties: the heat insulating layer has low thermal conductivity to maintain high temperature and prevent condensation in the heating region, while the heat transmitting layer has high thermal conductivity to efficiently transfer heat to the printed matter. The air blower is positioned to create localized high-velocity airflow precisely where needed for drying
2Object-affected harmful factors
If a heat insulating layer is added to prevent dew condensation, then condensation is reduced, but heat efficiency may decrease due to insulation
Solution Approach 1:
The heat transmitting layer acts as an intermediary between the heat insulating layer and the printed matter. It receives heat from the heating mechanism through the insulating layer and efficiently transmits it to the printed matter, thereby maintaining heat efficiency while allowing the insulating layer to prevent condensation
Solution Approach 2:
The air blower dynamically controls airflow to create a high-velocity stream that rapidly traverses the printed matter, reducing the residence time of air in the heated region and minimizing heat loss to the housing while maintaining effective drying
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 solution effectively reduces dew condensation, maintains high heat efficiency, and prevents contamination by minimizing temperature differences within the air sending path, ensuring efficient drying of printed matter.
Implementation Method 1
a heating mechanism arranged so as to heat a medium supported by a support surface
Implementation Method 2
an air blower arranged so as to flow gas in the air sending path toward the air outlet port
Implementation Method 3
a heat insulating layer that is arranged such that the heat insulating layer is superimposed on an outside of the inside layer
Data Source
AI summary
A drying apparatus includes a heating mechanism arranged so as to heat a medium supported by a support surface, an air sending path that includes an air intake port through which outside air is introduced and an air outlet port that opens to the support surface, and an air blower arranged so as to flow gas in the air sending path toward the air outlet port. The air sending path may include an inside layer that can suppress ventilation and a heat insulating layer that is arranged superimposed on an outside of the inside layer.