Constant Flow Valve Modulating Assembly Design
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Solution Overview
Problem
Existing regulating valves for fluid dispensing are overly complex and expensive, making them difficult to integrate into restricted spaces within equipment like soft drink dispensers, despite their satisfactory operation in other contexts.
Innovation Solution
A regulating valve design featuring a modulating assembly with a piston and flexible diaphragm, which uses varying fluid pressure to control flow, ensuring delivery at a constant pressure and flow rate by aligning inlet and outlet ports along different axes and employing a compression spring to prevent flow below a threshold pressure, and allowing flow above it, with tapered surfaces to modulate the flow path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing regulating valve designs are used, then fluid flow control function is achieved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent combines the valve body, diaphragm assembly, spring mechanism, and flow modulation components into a single integrated valve housing structure. The barrier wall divides the housing into sealed chambers that house multiple functional elements, merging what would traditionally be separate valve components into one compact unit, thereby reducing overall device complexity while maintaining flow control functionality
Solution Approach 2:
The valve assembly performs multiple functions within a single device: it regulates fluid flow rate, maintains constant outlet pressure, prevents backflow through the check valve, and provides threshold pressure activation. This multi-functionality eliminates the need for separate control devices, reducing system complexity despite the enhanced capabilities
2Reliability
If existing regulating valve designs are used, then fluid flow control function is achieved, but manufacturing cost increases
Solution Approach 1:
By integrating multiple valve functions into a single housing assembly with standardized components like the diaphragm, spring, and check valve, the design reduces the number of separate parts that need to be manufactured, assembled, and inventoried. This consolidation lowers manufacturing complexity and associated costs
Solution Approach 2:
The valve uses a compression spring with adjustable pre-load and a diaphragm with specific pressure sensitivity to create a threshold-based activation mechanism. By adjusting spring tension and diaphragm properties, the valve can be tuned for different applications without requiring custom-designed components, reducing manufacturing costs through standardized parameter adjustments
3Reliability
If existing regulating valve designs are used, then fluid flow control function is achieved, but difficulty of incorporation into restricted spaces increases
Solution Approach 1:
The valve design nests multiple functional chambers within a compact housing structure. The barrier wall creates nested compartments for the diaphragm chamber and spring chamber, allowing components to be arranged in three-dimensional space efficiently. This nested arrangement minimizes the overall envelope dimensions of the valve, enabling integration into restricted spaces within fluid dispensing equipment
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 solution simplifies the valve design, reducing complexity and cost while maintaining performance, enabling effective fluid delivery at a constant pressure and flow rate in compact spaces.
Implementation Method 1
A compression spring in the spring chamber is captured between an underside surface of the shell and a top surface of the barrier wall. The spring urges the modulating assembly towards the barrier wall.
Implementation Method 2
The piston is supported for movement in opposite directions along the central axis by a flexible annular diaphragm. When the fluid pressure exceeds the threshold pressure, the resilient closure force of the spring is overcome, allowing the piston assembly to move away from the barrier wall.
Data Source
AI summary
A regulating valve includes an outer housing comprised of a cap joined to a base. The housing is internally subdivided by a barrier wall into a head section and a base section, the latter being further subdivided by a modulating assembly into a fluid chamber and a spring chamber. An inlet and a 90° outlet in the cap communicate with the fluid chamber. Fluid at a variable pressure is admitted into the fluid chamber via the inlet, with the modulating assembly serving to maintain the fluid exiting the fluid chamber via the outlet at a substantially constant pressure.