Bacterial Load Monitoring in Food Dispensing Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current machines for producing and dispensing liquid and semi-liquid consumer food products, particularly in the dairy sector, face challenges in maintaining hygienic conditions due to the risk of microbial contamination, as preventive maintenance procedures are time-consuming and may not guarantee total product sanitization, and traditional methods for bacterial load estimation are costly and time-consuming.
Innovation Solution
A machine equipped with a bacterial load checking device comprising sensors and an analysis chamber that measures impedance to detect bacterial concentrations, coupled with an automated washing and sanitizing system, allowing for real-time monitoring and immediate action to maintain product sanitization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preventive maintenance procedures are performed at predetermined intervals, then hygienic conditions are maintained to some extent, but total product sanitization cannot be guaranteed and time is wasted on unnecessary cleanings
Solution Approach 1:
The system continuously monitors bacterial load in real-time and provides feedback to the control unit, which automatically initiates washing procedures only when bacterial thresholds are exceeded. This replaces fixed-schedule preventive maintenance with condition-based maintenance, ensuring sanitization is performed exactly when needed rather than on predetermined intervals.
Solution Approach 2:
The machine performs self-diagnosis through continuous bacterial load monitoring and automatically triggers its own washing and sanitization procedures when contamination thresholds are detected, eliminating the need for manual inspection and scheduling of maintenance activities.
2Measurement precision
If traditional laboratory methods are used to estimate bacterial population, then accurate bacterial load measurement is achieved, but the process is costly and very time-consuming
Solution Approach 1:
The system replaces complex laboratory mechanical and chemical analysis methods with electrical impedance measurement. Sensors detect changes in electrical impedance caused by bacterial presence in the product, providing accurate bacterial load measurement instantaneously without requiring laboratory equipment, skilled technicians, or lengthy processing times.
Solution Approach 2:
Instead of performing full laboratory analysis, the system uses impedance sensors to create an electrical signature copy of the bacterial presence that correlates with actual bacterial load. This simplified measurement approach maintains sufficient accuracy for food safety decisions while eliminating the time and cost of complete laboratory procedures.
3Reliability
If continuous monitoring and automatic sanitization systems are implemented, then product safety is enhanced and unnecessary maintenance is reduced, but device complexity increases
Solution Approach 1:
The system introduces impedance sensors as intermediary detection devices that translate bacterial presence into electrical signals readable by the control unit. This intermediary measurement approach simplifies the overall system architecture compared to direct bacterial culturing or complex imaging systems, while still providing reliable product safety monitoring.
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 machine ensures continuous monitoring and automatic sanitization of the bacterial load, enhancing product safety, reducing downtime and costs, and optimizing production management by providing immediate alerts and automated responses to bacterial load exceedances.
Implementation Method 1
a sensor (19) connected to a control unit (20) and able to detect the size of the product bacterial load
Data Source
AI summary
A machine for producing and dispensing liquid and semi-liquid consumer food products such as ice creams, whipped cream, yogurt and the like comprises a container for a basic product of the consumer food product, a feed and treatment circuit for the basic product, comprising a feed pump, dispensing means positioned at an outfeed end of the feed and treatment circuit, and a device for checking the bacterial load of the product during production/dispensing; an electronic control unit controlling and regulating the various steps for measuring the bacterial load.