Sterile Filling Housing with Nested Room-in-Room Design
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Solution Overview
Problem
Existing systems for sterile filling and sealing of containers, such as bottles, face challenges in maintaining operational reliability and quality due to contamination risks during the filling and sealing processes, particularly with mechanical transport elements introducing germs into the sterile environment.
Innovation Solution
A system with a 'room-in-room' concept, where the sterile housing is enclosed by an additional housing forming the container input and discharge, with labyrinth seals and sterile air management to maintain aseptic conditions, and transparent outer housing sections for monitoring and reduced mechanical transport exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical transport elements are used to move containers through the sterile environment, then productivity and ease of operation are improved, but contamination risk increases and reliability deteriorates
Solution Approach 1:
The system is divided into separate sterile and non-sterile zones with distinct transport mechanisms. Containers are transferred from external conveyors to internal sterile conveyors at controlled transfer points, allowing mechanical transport efficiency while maintaining sterility through spatial segmentation and zone separation.
2Reliability
If the sterile room is tightly sealed to maintain aseptic conditions, then contamination risk is reduced, but accessibility for maintenance and monitoring becomes difficult
Solution Approach 1:
The housing structure implements a nested design where the sterile room is contained within an outer housing. This allows the sterile environment to be maintained independently while providing external access points for maintenance and monitoring without compromising the internal aseptic conditions.
3Ease of operation
If transparent sections are added to the housing for monitoring, then operational visibility is improved, but the structural integrity and sealing of the sterile room may be compromised
Solution Approach 1:
Transparent monitoring sections are strategically positioned in specific locations where visual observation is needed but where compromise of the sterile barrier is minimized. These localized transparent areas allow operational monitoring while maintaining the overall sealing integrity of the sterile housing through selective application of transparent materials only where necessary.
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 enhances the quality and reliability of sterile filling and sealing by minimizing contamination risks, reducing wear on components, and allowing for better maintenance and monitoring, while maintaining aseptic conditions through controlled sterile air flow and reduced external influence.
Implementation Method 1
the sterile room (16) is subjected to a pressure P1 which is above the ambient pressure PN
Implementation Method 2
the intermediate space (26) is subjected to sterile air from the unit (28), specifically at a pressure P2 which is lower than the pressure P1 in the sterile space (16), but is greater than the ambient pressure PN
Data Source
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AI summary
A system for filling bottles or similar receptacles in a sterile or aseptic manner comprises a receptacle supplying mechanism, by means of which the receptacles that are to be filled are supplied to the system, a receptacle discharge mechanism, by means of which the full, closed receptacles are removed from the system, at least one unit designed as a filler for filling the receptacles, a unit designed as a closing device for closing the full receptacles, and a housing forming at least one sterile space, inside which at least an area of the receptacles that includes a receptacle opening is accommodated during the filling and closing process and to which a sterile gaseous and/or vaporous medium can be fed.