Pressure Modulator Ventilation Layout for Independent Outlet Pressure Control
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Solution Overview
Problem
Existing fluid guide arrangements struggle to effectively control and regulate pneumatic parameters downstream without directly controlling inlet pressure.
Innovation Solution
A fluid guide arrangement with an inlet and outlet fluid guide unit, a valve arrangement, and a controllable pressure modulator that influences the position of the valve body relative to the valve seat, allowing independent control of outlet pressure and volume/mass flow through the outlet fluid guide unit by utilizing a pressure change generated by the pressure modulator, which is connected via control fluid guide units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If inlet pressure is controlled to regulate outlet pressure and flow rate, then outlet pressure and flow rate can be controlled, but inlet pressure control is required which complicates the system
Solution Approach 1:
The invention extracts the pressure control function from the inlet side and relocates it to the outlet side through a pressure modulator. This allows outlet pressure and flow rate to be controlled independently without requiring inlet pressure control, thereby reducing system complexity while maintaining control precision.
Solution Approach 2:
A pressure modulator is introduced as an intermediary device between the outlet fluid guide unit and the valve arrangement. This pressure modulator actively adjusts outlet pressure, enabling precise control of outlet parameters without directly controlling inlet pressure, thus decoupling the control system from the inlet pressure variations.
2Measurement precision
If valve body position is adjusted to control outlet pressure, then outlet pressure can be regulated, but valve response time and precision are limited
Solution Approach 1:
The pressure modulator serves as an active intermediary that rapidly adjusts outlet pressure in response to control signals. This intermediary device can respond faster than mechanical valve adjustments alone, improving both response speed and pressure control precision by decoupling the control mechanism from the mechanical valve response time.
Solution Approach 2:
The pressure modulator dynamically changes the outlet pressure parameter in real-time based on control inputs, enabling precise and rapid pressure regulation without being constrained by the mechanical response characteristics of the valve body position adjustments.
3Adaptability or versatility
If multiple valves are used to control different flow rates, then flow control flexibility is improved, but device complexity and installation space increase
Solution Approach 1:
The pressure modulator performs multiple functions: it controls outlet pressure, regulates flow rate, and can work in conjunction with a single valve to provide variable flow control. This multi-functional device replaces what would traditionally require multiple specialized valves, thereby maintaining flow control flexibility while reducing the number of components and installation space requirements.
4Stress or pressure
If inlet pressure is maintained high to ensure sufficient outlet pressure, then outlet pressure can be guaranteed, but energy consumption increases
Solution Approach 1:
The pressure modulator acts as an energy-efficient intermediary that actively maintains the required outlet pressure by adjusting downstream conditions rather than requiring continuously high inlet pressure. This allows the system to operate with lower inlet pressure while still achieving the desired outlet pressure, thereby reducing energy consumption in the fluid delivery system.
Solution Approach 2:
The pressure modulator dynamically adjusts outlet pressure parameters to match actual demand, preventing the need to maintain constantly high inlet pressure. By changing outlet pressure parameters in real-time based on flow requirements, the system minimizes energy consumption while ensuring sufficient outlet pressure is always available when needed.
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
Enables precise control of outlet pressure and flow rates by minimizing the need to adjust inlet pressure, providing reliable and safe operation with reduced installation space requirements and improved responsiveness to desired settings.
Implementation Method 1
a controllable pressure modulator (15) with an inlet (E15) and an outlet (A15), wherein the pressure modulator (15) is configured to cause a pressure change (ΔP)
Implementation Method 2
The position of the valve body relative to the valve body seat depends on the difference between a control pressure force and an inlet pressure force
Data Source
AI summary
A fluid guide arrangement (100) includes a pressure modulator (15) and a valve (10), connected to an inlet fluid guide unit (3.1, 16) and an outlet fluid guide unit (17, 3.2). An inlet pressure (P2) and a control pressure (P1) determine a position of a valve body (19) relative to a valve body seat (18) at an outlet of the inlet fluid guide unit. With a gap between the valve body and the valve body seat, a fluid connection is established between the inlet fluid guide unit and the outlet fluid guide unit and is otherwise interrupted. The pressure modulator is connected to the inlet fluid guide unit and the outlet fluid guide unit and causes a pressure change (ΔP) such that the pressure at the outlet (A.15) of the pressure modulator is equal to the sum of the pressure at the inlet (E.15) and the caused pressure change.