Double Bag Fluid Handling for Automated Analysis
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Solution Overview
Problem
Automated analysis devices face complexity in using and replacing rinsing liquids, leading to increased manipulations and risks of errors during fluid handling.
Innovation Solution
A double bag system with a first compartment for fresh washing liquid and a second compartment for used liquid, equipped with connectors for easy filling and emptying, reduces manipulations and ensures a constant volume, while valves ensure leak-tight closure and orientation-specific placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate reservoirs are used for fresh and used rinsing liquid, then the functions of storing fresh liquid and collecting used liquid are fulfilled, but the device complexity and number of manipulations increase
Solution Approach 1:
The single bag is segmented into two compartments: a first compartment for fresh rinsing liquid and a second compartment for used rinsing liquid. These compartments are separated by a flexible partition wall that allows independent filling and emptying operations while maintaining a single integrated unit, thus fulfilling separate storage functions without requiring separate reservoirs
Solution Approach 2:
The patent combines the functions of fresh liquid storage and used liquid collection into a single bag unit. The first and second compartments are integrally joined by manufacture, creating one unified consumable that performs both functions, thereby reducing device complexity and the number of manipulations required
2Strength
If cans are used for reservoirs, then the structural integrity and containment are ensured, but the ease of operation and replacement are reduced due to numerous manipulations
Solution Approach 1:
The patent uses a flexible bag made of flexible material instead of rigid cans. This flexible structure maintains sufficient containment strength while enabling easier manipulation and replacement. The bag can be easily inserted into and removed from the drawer, and the flexible walls allow for simpler connection and disconnection operations compared to rigid canned reservoirs
3Adaptability or versatility
If manual replacement of reservoirs is performed, then the consumables can be changed, but the time consumption and operational complexity increase
Solution Approach 1:
The system enables self-service operation where the double bag automatically manages fluid transfer between compartments. The flexible partition wall allows the liquid to move from the first to the second compartment without external intervention, and the bag can be easily replaced as a single unit, reducing the time and complexity of consumable replacement operations
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
Simplifies the use of automated devices by reducing the number of manipulations required for consumable replacement, minimizing the risk of errors, and maintaining a constant volume, thus enhancing operational efficiency.
Implementation Method 1
The first compartment and second compartment may be separated by at least one flexible wall, for example by a double wall formed by the respective envelopes of the two compartments
Implementation Method 2
The first connector may be oriented downward when the bag rests horizontally flat with the second compartment above the first. This horizontal functioning is optimal, since it facilitates the emptying of the first compartment by the weight of the liquid arriving in the second compartment
Data Source
AI summary
Double bag having a first compartment containing a composition to be distributed and a second compartment for receiving a used fluid, a first bag connector communicating with the first compartment and serving to empty the latter, and a second bag connector communicating with the second compartment and serving to fill the latter.