Dishwasher Sorption Dryer Airflow Homogenization for Even Drying
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Solution Overview
Problem
Existing dishwasher sorption dryer devices face challenges in achieving balanced airflow for effective sorption and desorption of reversibly dehydratable materials, leading to inadequate drying and energy inefficiency, with issues of local overheating and uneven flow profiles.
Innovation Solution
The integration of flow-conditioning means to homogenize the airflow cross-section profile, ensuring balanced flow velocity and temperature distribution across the sorption unit, which enhances sorption and desorption performance while preventing local overheating and improving energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If airflow is used to pass through the sorption column for drying crockery, then moisture is drawn from the air by condensation, but the airflow causes local overheating of the drying material during desorption operation
Solution Approach 1:
The patent applies local quality by creating a flow-conditioning means that modifies the airflow characteristics at specific locations within the sorption column. The conditioning means ensures that airflow velocity and temperature are homogenized across different regions, preventing local overheating while maintaining effective moisture removal. This is achieved by introducing structural elements that redistribute the airflow to create more uniform flow conditions throughout the sorption material bed.
2Object-affected harmful factors
If heating mechanism is arranged before the air inlet for the sorption column to prevent local overheating, then the drying material is protected from overheating, but the sorption and desorption performance is not adequately improved
Solution Approach 1:
The patent applies preliminary action by implementing flow conditioning before the airflow enters the sorption column. The flow-conditioning means pre-adjusts the airflow velocity and temperature distribution, creating homogenized flow conditions that enable both effective sorption and desorption operations. This preliminary conditioning ensures that the airflow is optimally prepared to interact with the sorption material, maximizing performance while preventing harmful local overheating.
3Ease of repair
If the reversibly dehydratable drying material is heated to very high temperatures for regeneration, then water stored in the material emerges as hot water vapor, but adequate and satisfactory drying of the drying material is difficult to achieve in all cases
Solution Approach 1:
The patent applies parameter changes by modifying the airflow parameters (velocity, temperature distribution, and flow pattern) through the flow-conditioning means. These parameter changes enable the sorption column to achieve effective regeneration and drying under more consistent and reliable conditions. The homogenized airflow ensures uniform heat and mass transfer throughout the sorption material, making the drying process more reliable across different operating conditions.
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 results in improved even drying and increased sorption performance, allowing for controlled minimum desorption and adsorption performance, reducing energy expenditure and preventing undesirable heat losses, thereby optimizing the sorption unit's efficiency.
Implementation Method 1
one or more flow-conditioning means (6, 8.1, 8.2) are provided for homogenizing the flow cross-section profile of the airflow (15) as it flows through the sorption dryer device (1)
Implementation Method 2
its reversibly dehydratable drying material (41) is heated to very high temperatures. As a result, water stored in this material emerges as hot water vapor
Implementation Method 3
moisture is drawn from the air that is routed through, by means of condensation, by its reversibly dehydratable drying material
Implementation Method 4
a blower, and moisture is drawn from the air that is routed through
Data Source
AI summary
A dishwasher having a washing container, a sorption dryer device connected to the washing container in an air-conducting fashion, and at least one flow-conditioning device to homogenize a flow cross-section profile of an airflow as the airflow flows through the sorption dryer device. The flow-conditioning device is provided for the sorption unit between at least one heating element and the sorption unit of the sorption dryer device when viewed in the direction of the airflow such that essentially every point of an intake cross-section area of the sorption unit of the sorption dryer device is permeated by a volumetric airflow with essentially the same intake temperature.