Low-Emission Receptacle Valve Design for Pressure-Equalized Coupling

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Solution Overview

Problem

Existing nozzles and receptacles face challenges in minimizing fluid venting into the atmosphere when disconnected and in facilitating easy coupling due to residual gas pressure.

Innovation Solution

The design includes nozzles and receptacles with specific configurations, such as check assemblies and spring mechanisms, that equalize pressure between the nozzle and receptacle, reducing the effort required for coupling and minimizing fluid venting during disconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If the nozzle is disconnected from the receptacle after fluid transfer, then the fluid transfer function is completed, but residual gas is vented into the atmosphere causing loss of substance and environmental harm

Engineering Contradiction:

Improvefluid ventingVSAvoidatmospheric pollution

Core Design Contradiction:

Loss of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and removes the harmful residual gas from the receptacle before disconnection by introducing a purge mechanism that actively evacuates the gas through a dedicated pathway, preventing its release into the atmosphere

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a purge valve as an intermediary component that mediates between the receptacle and atmosphere, controlling the removal of residual gas in a controlled manner rather than direct venting

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the receptacle retains residual gas after transfer, then the gas occupies accessible areas preparing for next use, but the remaining gas opposes nozzle insertion making coupling difficult

Engineering Contradiction:

Improvecoupling easeVSAvoidresidual gas pressure

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The patent performs preliminary action by equalizing the pressure between nozzle and receptacle before the actual coupling operation, using a pressure equalization mechanism to prepare the system in advance, thereby eliminating the resistance that would otherwise oppose nozzle insertion

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent creates equipotential conditions by equalizing pressure between the nozzle and receptacle, eliminating the pressure differential that causes resistance during coupling, making the system energetically balanced and easy to operate

Inventive Principle:

Principle #12Equipotentiality

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

This configuration reduces the difficulty of coupling and minimizes fluid venting, improving the efficiency and usability of the nozzle and receptacle system.

Implementation Method 1

check assemblies and spring mechanisms, that equalize pressure between the nozzle and receptacle

Methodology Applied

Scientific EffectPressure equalization: Pressure Gradient

Data Source

PatentUS12297961B2Low emission receptacles

Publication Date: 2025.05.13 ENGINEERED CONTROLS INT

AI summary

Low emission nozzles and receptacles are disclosed. A receptacle includes a main body, a first stem, a first poppet connected to the first stem, a valve seat disposed in the main body, a first spring configured to bias the first poppet to a first closed position, a second stem slidingly engaged to the first poppet and the first stem, a second poppet connected to the second stem, and a second spring configured to bias the second poppet to a second closed position.