Sorption Drying Layout Without Air Ducts in Dishwashers
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Solution Overview
Problem
Conventional dishwashers with sorption drying devices face energy inefficiencies and potential damage risks due to regeneration occurring during non-operating phases, and require additional energy and space for air ducts.
Innovation Solution
A dishwasher design that integrates a sorption drying device directly to the washing container via its outlet and inlet without intermediate air ducts, using reversible dehydratable material for drying and heating, with passive or active sealing means to manage air flow and prevent water penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sorption drying device is integrated into a dishwasher, then drying efficiency is improved, but device complexity and space requirements increase due to the need for air ducts
Solution Approach 1:
The patent combines the sorption drying device with the washing container by integrating the sorption column directly into the container structure. The air outlet of the washing container is positioned to directly communicate with the inlet of the sorption column, eliminating the need for separate air ducts. This merging of functions reduces device complexity while maintaining drying efficiency.
Solution Approach 2:
The washing container is designed to serve multiple functions: it acts as both the washing chamber and the housing for the sorption drying device. The sorption column is integrated into the container structure, allowing the same space to fulfill both washing and drying functions, thereby reducing overall device complexity and space requirements.
2Reliability
If air ducts are used to connect the washing container to the sorption drying device, then air flow is ensured, but manufacturing costs and space requirements increase
Solution Approach 1:
The patent eliminates separate air ducts by merging the air flow path into the structural walls of the washing container. The outlet and inlet openings are directly formed in the container wall, creating an integrated air flow path that ensures reliable air flow without requiring additional manufactured components like ducts, thereby reducing manufacturing costs.
Solution Approach 2:
The patent extracts the air duct component from the system by using the container wall itself to provide the air flow path. The openings in the wall serve as direct air passages, removing the need for separate duct components and simplifying manufacturing.
3Volume of moving object
If the sorption drying device is arranged underneath the rinsing tank, then space is optimized, but access for maintenance becomes difficult
Solution Approach 1:
The sorption drying device is designed as a separate, modular unit that can be independently accessed and maintained. The device includes its own housing with access points, allowing the sorption column and other components to be serviced without requiring disassembly of the entire washing container or rinsing tank structure, thus maintaining ease of repair while optimizing space.
4Productivity
If reversible dehydratable material is used for sorption, then drying performance is improved, but energy consumption increases during regeneration
Solution Approach 1:
The patent converts the energy required for regenerating the sorption column into a useful function by using it to heat the rinsing liquor or dishes in the washing container. The heating element positioned near the sorption column captures the thermal energy during regeneration and transfers it to the wash load, transforming what would be wasted energy into a beneficial heating function that reduces overall energy consumption.
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 design reduces energy consumption, minimizes space requirements, and lowers manufacturing costs by eliminating the need for air ducts, while ensuring efficient drying and heating during operation.
Implementation Method 1
a sorption drying device which is connected in an air-conducting manner to the washing container via an outlet of the washing container and an inlet of the washing container, and is provided with a sorption column encompassing reversible dehydratable material
Implementation Method 2
Desorption of the reversibly dehydratable material takes place during the non-operating phase of the device, the water vapour formed thereby being conducted to the outside through the opening
Data Source
AI summary
A dishwasher includes a washing container, devices for washing dishes by means of rinsing liquor, and a sorption drying device which is connected in an air-conducting manner to the washing container via an outlet of the washing container and an inlet of the washing container. The sorption drying device is provided with a sorption column encompassing reversibly dehydratable material. The outlet and the inlet of the washing container are connected to the sorption drying device without mounting an air duct there between.