Pressure-Adaptive Throttle Tongue for Smooth Fluid Drive Motion

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Solution Overview

Problem

Existing throttle devices in fluid systems require manual adjustment to set the throttle intensity, making it time-consuming and inefficient to find the optimal setting for a given application.

Innovation Solution

A self-adapting throttle device featuring a pivotable throttle tongue that adjusts the free flow cross-section of the throttle channel based on differential pressure, allowing for automatic optimization of fluid flow without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual adjustment of the throttle member is used to set the free flow cross-section, then the throttle intensity can be changed, but it is time-consuming and difficult to find the optimal setting

Engineering Contradiction:

Improvethrottle intensity adjustmentVSAvoidtime to find optimal setting

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The throttle device automatically adjusts the free flow cross-section based on the pressure difference between the two sides of the throttle member. The system serves itself by using the pressure differential to directly move the throttle member, eliminating the need for manual adjustment and time-consuming optimization processes.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The pressure difference between the upstream and downstream sides of the throttle member provides continuous feedback about the fluid flow conditions. This feedback automatically positions the throttle member at the optimal setting without requiring external intervention or manual trial-and-error adjustment.

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If a fixed free flow cross-section is used in the throttle channel, then the device structure is simple, but the fluid flow cannot be optimized for different operating conditions

Engineering Contradiction:

Improvefluid flow optimizationVSAvoidthrottle device structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The throttle member transitions from a static, fixed position to a dynamic, pressure-driven position. The free flow cross-section automatically adapts to different operating conditions based on the pressure difference, providing fluid flow optimization without requiring complex control systems or multiple adjustable components.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The pressure difference acts as an intermediary that automatically controls the throttle member position. Instead of complex control systems or manual adjustment mechanisms, the pressure differential directly mediates the optimization of fluid flow by positioning the throttle member appropriately.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the throttle member is made rigid for precise control, then the throttle setting is stable, but it cannot adapt automatically to pressure changes

Engineering Contradiction:

Improveautomatic adaptation to pressure changesVSAvoidthrottle member rigidity

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The throttle member's position parameter changes automatically in response to pressure difference. By allowing the position to vary based on pressure conditions rather than maintaining a fixed rigid setting, the system achieves both stability under given conditions and adaptability to changing pressure environments.

Inventive Principle:

Principle #35Parameter changes

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 throttle device ensures smooth, jerk-free movement of output members in fluid-actuated drives by maintaining a consistent counter-pressure, while also enabling rapid venting during large pressure changes, thus improving the efficiency and reliability of fluid system operations.

Implementation Method 1

while changing the free flow cross-section of the throttle channel with accompanying rubber-elastic reversible deformation in the direction of the one or other of the two throttle channel sections

Methodology Applied

Scientific EffectRubber-elastic reversible deformation: Elasticity

Implementation Method 2

depending on the pressure difference prevailing between the two throttle channel sections

Methodology Applied

Scientific EffectPressure difference: Pressure Gradient

Data Source

PatentUS20250129804A1Throttle device, fluid device and fluid system

Publication Date: 2025.04.24 FESTO AG & CO KG

AI summary

A throttle device has a holding structure, to which a throttle tongue is attached with a proximal end section, which projects into a throttle channel with a distal end section ending freely and divides same into two throttle channel sections. The throttle tongue can be pivoted into various pivot positions depending on the pressure difference prevailing between the two throttle channel sections with accompanying rubber-elastic reversible deformation starting from a neutral position in order to automatically adapt a free flow cross-section to the respective need.