Range Exhaust Cleaning Control for Grease Film Removal
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Solution Overview
Problem
Cooking range exhaust systems accumulate a grease film over time, posing a fire hazard and requiring manual cleaning, which can lead to overcleaning or undercleaning issues.
Innovation Solution
An automated cooking range exhaust cleaning system with a spray system and control box that applies a detergent solution, schedules cleaning operations zone-by-zone, and uses sensors to determine cleaning necessity, ensuring precise and efficient film removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning of exhaust systems is performed, then grease film removal is achieved, but overcleaning or undercleaning occurs leading to waste or fire hazards
Solution Approach 1:
The system incorporates sensors (optical, electrical, or other types) that monitor grease film accumulation in real-time and provide feedback to the controller. The controller adjusts cleaning operations based on this feedback, initiating cleaning only when grease accumulation reaches predetermined thresholds. This feedback mechanism eliminates both overcleaning (waste) and undercleaning (fire hazard) by making cleaning decisions based on actual conditions rather than fixed schedules.
Solution Approach 2:
The exhaust cleaning system performs self-monitoring and self-regulation through integrated sensors and automated control. The system automatically detects grease accumulation levels and triggers cleaning operations without external intervention, enabling it to service itself and maintain optimal cleaning levels without human oversight or manual scheduling.
2Productivity
If manual cleaning scheduling is used, then cleaning operations are performed, but inconsistent cleaning quality results due to human error
Solution Approach 1:
The system replaces manual mechanical cleaning operations with an automated spray system controlled by electronic sensors and a controller. The spray nozzles deliver cleaning solution automatically, and the entire process is managed electronically rather than mechanically by hand, ensuring consistent application of cleaning parameters and eliminating human variability.
Solution Approach 2:
The controller automatically adjusts cleaning parameters (spray duration, solution concentration, spray intensity) based on sensor feedback about grease accumulation levels. This dynamic parameter adjustment ensures optimal cleaning effectiveness for each specific condition, maintaining consistent cleaning quality across different situations without manual intervention.
3Measurement precision
If automated spray system is implemented, then precise grease film removal is achieved, but system complexity increases
Solution Approach 1:
The exhaust system is divided into multiple zones with independent spray nozzles and sensor coverage. Each zone can be monitored and cleaned independently based on local grease accumulation conditions. This segmentation allows the complex system to be managed in manageable sections, reducing overall system complexity while maintaining high measurement precision through localized sensing.
Solution Approach 2:
The controller serves multiple functions: it receives signals from various types of sensors, processes grease accumulation data, determines when cleaning is needed, controls spray nozzle operation, and adjusts cleaning parameters. This multi-functionality consolidates what would otherwise require multiple separate devices into a single unit, reducing system complexity while maintaining high measurement and control precision.
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 effectively and safely removes grease films from cooking range exhaust systems, reducing the risk of fires and optimizing cleaning operations by ensuring consistent and targeted cleaning cycles.
Implementation Method 1
the system may apply a degreasing solution
Data Source
AI summary
A method for cleaning a cooking range exhaust system includes, in response to receipt of a start signal at a control box of a cooking range exhaust cleaning system to initiate a cleaning operation, causing a cleaning solution comprising a mixture of detergent and water having a ratio based on a target mixing ratio to be provided to a supply line, and causing an electronically-controlled valve to open to facilitate provision of the cleaning solution to a nozzle coupled to the electronically-controlled valve via a conduit for a predetermined period of time, wherein the nozzle is arranged to spray a zone of the cooking range exhaust system.