Differential pressure loss valve
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Solution Overview
Problem
Prior art valves lack a consistent and accurate linear relationship between differential pressure loss and active channel length, leading to instability and increased maintenance costs in industrial applications, particularly in HVAC and robotic systems.
Innovation Solution
A differential pressure loss valve with a cylindrical hollow section and a channel carrier featuring a continuous cylindrical helical thread, where the channel carrier is movable within the sleeve to adjust the active channel length, forming a composite channel with a constant cross-section, allowing for precise control of differential pressure loss and achieving linearity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If prior art valves use curved channels (e.g., 90 degree curvature) to change flow direction, then the valve can achieve compact geometry and multi-directional flow control, but the differential pressure loss increases 3 to 7 times compared to straight channels of equal length
Solution Approach 1:
The patent applies helical curvature to the channel carrier, creating a spiral flow path that gradually changes direction rather than using sharp 90-degree bends. This continuous curvature distributes the pressure loss over the entire channel length, maintaining compact geometry while reducing peak pressure losses compared to abrupt directional changes
2Loss of energy
If prior art valves reduce channel cross-sectional area to increase differential pressure loss, then the valve can achieve higher pressure drop with shorter channel length, but the flow rate capacity is reduced and the relationship becomes non-linear
Solution Approach 1:
The patent changes the parameter of channel cross-sectional area from variable to constant along the channel length. This ensures that differential pressure loss is directly proportional to channel length, creating a linear relationship that simplifies control and maintains predictable flow capacity across the full range of operation
3Adaptability or versatility
If prior art valves use non-linear gain characteristics to achieve variable differential pressure loss, then the valve can provide wide range adjustment, but stability is reduced and electronic compensating converters are required, increasing cost and complexity
Solution Approach 1:
The patent changes the gain characteristic from non-linear to linear by ensuring constant channel cross-sectional area and uniform distribution of pressure loss along the channel length. This linear relationship between channel length and differential pressure loss eliminates the need for electronic compensating converters, reducing system complexity while maintaining wide adjustment range through variable channel length
4Loss of energy
If prior art valves increase channel length to achieve higher differential pressure loss, then the valve can provide greater pressure drop, but the valve size and channel geometry become more complex
Solution Approach 1:
The patent uses helical curvature to pack a long channel path into a compact cylindrical volume. The spiral configuration allows the channel to achieve significant length within a small radial footprint, providing high differential pressure loss capability without increasing the overall valve size proportionally
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 provides a consistent, accurate, and linear relationship between differential pressure loss and active channel length, enhancing stability and reducing setup and maintenance costs in industrial applications by eliminating the need for electronic compensators and complex adjustments.
Implementation Method 1
differential pressure loss valve comprising: a sleeve incorporating a cylindrical hollow section having a continuous cylindrical helical thread formed in said cylindrical hollow section; a channel carrier incorporating a continuous cylindrical helical thread formed in its outer wall
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
The present invention is a differential pressure loss valve comprising a valve housing that incorporates: a sleeve that incorporates a continuous cylindrical helical thread formed in the inner surface thereof; and a cylindrical carrier incorporating a cylindrical helical thread formed in the outer surface thereof. When the channel carrier is positioned within the sleeve a portion of the sleeve cylindrical thread integrates with the channel carrier cylindrical helical thread, and a composite channel is formed therebetween. The geometric configuration of the composite channel is consistent throughout such composite channel, although the geometric configuration may differ in individual embodiments of the present invention. Fluid can flow within the valve between the inlet port incorporated in the sleeve and an outlet port incorporated in the valve housing and through the composite channel, and any portion thereof between the inlet port and outlet port, if any.