Dual Pump Vaporized Hydrogen Peroxide System with Recirculation
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Solution Overview
Problem
Prior vapor hydrogen peroxide generator systems fail to prevent gasification of hydrogen peroxide, leading to incorrect flow rate measurements and inefficiencies, and lack a method to interrupt vapor flow during idle states, resulting in excess usage and safety hazards.
Innovation Solution
A system with dual pump assemblies and a hydrogen peroxide reservoir that alternates between directing fluid to injectors and recirculating it, purging air bubbles, and includes redundancy for pump failures, with a method to refill and manage the reservoir to minimize gasification and optimize usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogen peroxide is allowed to remain in containers or fluid lines for extended periods, then the system maintains readiness for operation, but gasification occurs causing incorrect flow rate measurements
Solution Approach 1:
The system implements periodic recirculation of hydrogen peroxide through the fluid lines and containers during idle states. A pump periodically activates to circulate the fluid, preventing gasification by maintaining continuous motion. This periodic action resolves the contradiction by keeping the system ready (periodic preparation) while preventing measurement errors (continuous fluid motion prevents gasification).
Solution Approach 2:
The system performs preliminary recirculation actions during idle periods before actual filling operations begin. By pre-circulating the hydrogen peroxide solution through all fluid paths during standby time, the system prepares the fluid pathways in advance, preventing gasification from occurring during subsequent measurement and filling operations.
2Loss of time
If the vapor hydrogen peroxide system remains in a running state during idle periods, then restart time is reduced, but excess hydrogen peroxide is consumed and safety hazards increase
Solution Approach 1:
Instead of continuous operation, the system uses periodic recirculation during idle states. The pump activates at predetermined intervals to circulate fluid through the system, maintaining readiness without continuous vapor generation. This resolves the contradiction by balancing minimal hydrogen peroxide consumption with adequate system preparedness through periodic preparation cycles.
3Device complexity
If a single pump assembly is used, then the system is simpler, but pump failure causes operational interruption
Solution Approach 1:
The system divides the pump function into multiple independent pump assemblies (first and second pump assemblies). Each pump assembly can operate independently, and the system can switch between them based on operational needs or failure conditions. This segmentation provides redundancy while maintaining relatively simple individual pump designs.
Solution Approach 2:
The system implements different operational modes for different pump assemblies based on local conditions. When one pump is actively filling, another can be in recirculation mode or standby. This local differentiation optimizes reliability by having pumps in different states of readiness while maintaining overall system simplicity.
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 reduces gasification, ensures accurate flow rate measurement, minimizes hydrogen peroxide usage, and provides safe operation by alternating pump usage and purging air bubbles, while maintaining system readiness and reducing maintenance time.
Implementation Method 1
initiating the second pump assembly to recirculate the fluid from the hydrogen peroxide reservoir through the second pump and back to the hydrogen peroxide reservoir
Implementation Method 2
System for generating vaporized hydrogen peroxide for fillers
Data Source
AI summary
A vapor hydrogen peroxide system and method that includes a reservoir assembly, a first pump assembly, a second pump assembly, a test assembly and a heating assembly. The system is configured to operate sequentially switching between the first pump assembly and the second pump assembly. The pump assembly that is to be utilized is directed through a recirculation procedure prior to the switching, to, in turn, purge any air bubbles that may have amassed within the pump assembly prior to switching.