Piston Bypass Valve for Sequential Fluid Dosing with Minimal Flushing
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Solution Overview
Problem
Existing methods for dosing fluids into pressurized central heating systems are inefficient and wasteful, requiring significant water usage to ensure chemical distribution, and piston-operated devices lack effective sequential delivery of multiple materials without mixing.
Innovation Solution
A handheld apparatus with a dispensing vessel featuring a piston and bypass passage, allowing sequential dispensing of multiple fluids by opening a valve when the piston reaches a specific position, enabling efficient delivery of chemicals with minimal water usage and controlled mixing of materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If water is used to flush chemicals through the vessel into the system, then the chemicals are transferred into the system, but significant water usage is required and time is wasted
Solution Approach 1:
The piston is divided into two distinct parts: a first part that moves to dispense chemicals and a second part that acts as a valve mechanism. This segmentation allows the system to control fluid flow in stages, enabling complete chemical transfer without requiring excessive flushing water, thus resolving the contradiction between water usage and dosing efficiency
Solution Approach 2:
The second part of the piston is designed to automatically open the bypass passage when it reaches a predetermined position. This preliminary action ensures that the chemical transfer is completed efficiently without requiring additional flushing water, thereby improving productivity while reducing water consumption
2Ease of operation
If multiple materials are delivered through parallel channels, then delivery is simplified, but control over mixing and sequential delivery is lost
Solution Approach 1:
The single piston is segmented into two functional parts that work in sequence. The first part controls chemical dispensing while the second part controls the bypass valve. This segmentation enables precise control over sequential material delivery and mixing without requiring multiple parallel channels, thus improving ease of operation while maintaining manageable device complexity
Solution Approach 2:
The patent merges the functions of multiple control mechanisms into a single integrated piston structure. By combining the chemical dispensing function and the valve control function in one piston, the system achieves sophisticated control over material delivery sequences without the complexity of multiple separate mechanisms, resolving the contradiction between operational ease and device complexity
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 apparatus enables rapid, accurate, and efficient dosing of chemicals into central heating systems and sequential delivery of multiple materials in piston-operated devices, reducing water waste and operator time while ensuring precise chemical distribution.
Implementation Method 1
the piston is operable to move under pressure from a first position to a second position
Data Source
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AI summary
In one aspect the present invention provides apparatus for dosing a fluid flow system with a treatment fluid/ chemicals. The apparatus comprises: a vessel; an inlet pipe or hose and an outlet pipe or hose for coupling to the system so that fluid/ water from the system may flow into and through the vessel and return into the system to flush chemicals from within the vessel out of the vessel and into the system. The vessel has a piston within it and the vessel wall defines a cylinder in which the piston moves under pressure of incoming fluid from a first position at which the vessel contains fluid to be dispensed into the system to a second position corresponding to substantially complete emptying of the vessel. The piston has a bypass passage through or around it that opens when the piston substantially reaches the second position so that fluid/ water from the system may flow passed the piston when the piston is at the second position. In another aspect the present invention provides a handheld device for dispensing a dose of fluid and which may take the form of a syringe for dispensing sequential doses of medicaments or shots of drinks or for mixing and dispensing fluids in stages.