Two-Zone Hood Dishwasher Layout for Peak-Time Washing Capacity
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Solution Overview
Problem
Commercial batch dishwashers face bottlenecks during peak times due to long cycle times required for heavily soiled items, leading to reduced capacity and increased manual handling, which complicates washware processing and resource management.
Innovation Solution
A hood-type dishwasher with a treatment chamber divided into two zones, allowing independent treatment of washware based on soiling levels, where the main zone handles lightly soiled items efficiently and an auxiliary zone handles heavily soiled items with extended cycles, optimizing resource use and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single treatment zone is used in a batch dishwasher, then the device complexity is reduced, but the productivity decreases during peak times due to long cycle times for heavily soiled items
Solution Approach 1:
The treatment chamber is divided into two independent treatment zones (first and second zones), each capable of processing washware separately. This segmentation allows parallel processing of differently soiled items, increasing overall washing capacity without requiring a completely separate machine.
Solution Approach 2:
Both treatment zones use the same wash system and recirculation infrastructure, allowing the system to handle multiple types of washing tasks simultaneously. The zones can process different categories of washware (lightly soiled vs. heavily soiled) using the same fundamental washing mechanism.
2Manufacturing precision
If extended cycle times are used for heavily soiled items, then the washing quality improves, but the loss of time increases for the overall washing process
Solution Approach 1:
By separating washware into two zones based on soiling level, the system can apply appropriate cycle times to each group. Lightly soiled items in the first zone use shorter cycles, while heavily soiled items in the second zone receive extended treatment, optimizing the overall time investment.
Solution Approach 2:
The two treatment zones operate simultaneously and independently, allowing continuous processing of washware. While one zone completes its cycle, the other can begin or continue its process, ensuring that the system is constantly productive without idle time between batches.
3Productivity
If the main treatment zone capacity is increased to handle peak times, then the productivity improves, but the device complexity and space requirements increase
Solution Approach 1:
Instead of increasing the volume of a single treatment zone, the system adds a second zone that operates in parallel. This dimensional approach (adding another processing dimension) increases capacity without requiring a proportionally larger single chamber, optimizing space utilization.
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 enables continuous operation during peak times by efficiently processing both lightly and heavily soiled washware without reducing the main zone's capacity, saving resources and improving wash performance for heavily soiled items.
Implementation Method 1
The wash liquid contained in the wash tank can be conveyed from the wash pump to the wash nozzles via the line system
Implementation Method 2
The wash liquid contained in the wash tank can be conveyed from the wash pump to the wash nozzles via the line system and can be sprayed onto the washware to be cleaned through the wash nozzles
Implementation Method 3
The treatment chamber generally has arranged beneath it a wash tank in which liquid from the treatment chamber can flow back due to the force of gravity
Data Source
AI summary
A dishwasher in the form of a commercial utensil washer or dishwasher which is designed as a batch dishwasher and is realized as a hood-type dishwasher, wherein the dishwasher has a treatment chamber with at least one wash system which is designed as a recirculation system, wherein the treatment chamber has a first treatment zone and at least one further, second treatment zone, wherein items of washware can be treated independently of one another and at least temporarily at the same time in the first and in the at least one second treatment zone.