Sorption Drying System with Optimized Cross-Sectional Flow Area
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Solution Overview
Problem
Dishwashers with sorption drying systems face challenges in consistently and thoroughly drying reversibly dehydratable sorption materials during the desorption process, leading to potential overheating and inefficiencies.
Innovation Solution
A sorption drying system with a through-flow cross-sectional area for the sorption material between 80 and 800 cm², specifically designed to enhance air flow and heat distribution, ensuring thorough and energy-efficient drying and regeneration of the sorption material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a heater is arranged upstream of the sorption column inlet to heat air during desorption, then the sorption material can be regenerated, but local overheating of the sorption material occurs and drying consistency is compromised
Solution Approach 1:
The patent applies local quality by varying the heater arrangement and air flow distribution to ensure uniform heat distribution across the sorption material. Instead of a single heater position, the system uses multiple heating zones or distributed heating elements within the sorption column, ensuring that each local region of the sorption material receives appropriate heat without localized overheating, thereby achieving consistent drying throughout the material.
Solution Approach 2:
The patent introduces an intermediary air flow system that mediates between the heater and the sorption material. By using a controlled air flow through the sorption column during desorption, the system distributes heat uniformly and prevents direct contact between intense heat sources and the sorption material, avoiding local overheating while ensuring thorough regeneration.
2Volume of moving object
If the sorption column is designed for compact accommodation in the dishwasher, then space is saved, but air flow and heat distribution may be insufficient for thorough drying
Solution Approach 1:
The patent applies dimensionality change by optimizing the geometric configuration of the sorption column and air flow paths. The system uses vertical stacking, radial air flow patterns, or helical flow channels within the compact column structure, allowing sufficient air flow and heat distribution in three-dimensional space without increasing the overall volume occupied by the device in the dishwasher.
Solution Approach 2:
The patent segments the sorption column into multiple functional zones or uses modular sorption material sections, allowing each segment to be efficiently dried and regenerated. This segmentation enables better air flow distribution and heat penetration throughout the compact structure, ensuring thorough drying of all sorption material regions despite the limited overall size.
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 system achieves reliable, energy-efficient drying of items in the washing container and thorough regeneration of the sorption material, preventing overheating and ensuring effective reuse in subsequent drying processes.
Implementation Method 1
moisture is removed from the air guided therethrough by the reversibly dehydratable drying material of said sorption column through condensation
Implementation Method 2
a heating device (HZ) is provided in the sorption container (SB), which is arranged, viewed in the through-flow direction (DSR), upstream of the sorption unit (SE)
Implementation Method 3
Water stored in this material is thereby released as hot water vapor
Data Source
AI summary
A dishwasher is provided, which has a washing container; an air-guiding channel to generate an air flow; and a sorption drying system to dry items to be washed, wherein the sorption drying system has a sorption container with reversibly dehydratable sorption material. The sorption container is connected to the washing container by the air-guiding channel. In the sorption container, a through-flow cross-sectional area for the reversibly dehydratable sorption material of substantially between 80 cm2 and 800 cm2 is provided.