Lubricant Valve Segmentation for Sealed System Purging

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Solution Overview

Problem

Existing systems face difficulties in efficiently replenishing new lubricants and purging used lubricants, especially in sealed systems, which can lead to environmental contamination and operational challenges.

Innovation Solution

A valve with a housing and plunger mechanism that facilitates simultaneous inflow of new lubricant and outflow of used lubricant through separate passageways, allowing controlled lubricant transfer and purging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a sealed system is used to prevent external contamination, then system reliability is improved, but lubricant replacement becomes difficult

Engineering Contradiction:

Improvesystem reliabilityVSAvoidlubricant replacement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The valve divides the lubricant replacement process into two separate pathways: a first passageway for introducing new lubricant and a second passageway for purging used lubricant. This segmentation allows the sealed system to maintain its integrity while enabling controlled lubricant replacement through dedicated entry and exit routes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The valve acts as an intermediary device that mediates between the external lubricant supply and the sealed system. It provides controlled access points without compromising the sealed nature of the system, allowing lubricant replacement while maintaining protection against external contamination.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of substance

If lubricant is purged from the system, then used lubricant is removed, but environmental contamination may occur

Engineering Contradiction:

Improveused lubricant removalVSAvoidenvironmental contamination

Core Design Contradiction:

Loss of substanceVSObject-affected harmful factors

Solution Approach 1:

The valve serves as a controlled intermediary that directs used lubricant through a designated second passageway to a collection container. This controlled routing prevents uncontrolled discharge and potential environmental contamination while ensuring complete removal of used lubricant from the system.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The valve extracts used lubricant from the sealed system through a dedicated purging passageway and directs it to a collection container. This extraction process separates the waste removal function from the system operation, allowing used lubricant to be contained and disposed of properly without affecting the sealed system or environment.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If simultaneous inflow and outflow of lubricant is enabled, then replacement efficiency is improved, but valve complexity increases

Engineering Contradiction:

Improvelubricant replacement efficiencyVSAvoidvalve structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The valve uses segmentation to create separate first and second passageways for simultaneous lubricant inflow and outflow. This segmentation enables efficient concurrent operations while keeping each passageway's structure relatively simple and dedicated to a single function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The valve merges multiple functions (lubricant intake, lubricant purging, and flow control) into a single integrated device. By combining these functions in one valve body with separate passageways, it achieves simultaneous inflow and outflow without requiring multiple separate components, thus improving efficiency while limiting complexity increase.

Inventive Principle:

Principle #5Merging (Combining)

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 efficient lubricant replenishment and purging without environmental contamination, simplifying the process for sealed systems and ensuring smooth operation of machine components.

Implementation Method 1

the set of ports are fluidly coupled to each other through a first section of the chamber to define a first passageway and the set of conduits are fluidly coupled to each other through a second section of the chamber to define a second passageway

Methodology Applied

Scientific EffectFluid coupling through passageways:

Data Source

PatentUS20250277560A1Valve for Supplying and Purging Lubricants from Systems

Publication Date: 2025.09.04 CATERPILLAR SARL

AI summary

A valve includes a housing and a plunger. The housing defines a chamber, a set of ports, and a set of conduits. The plunger is disposed within the chamber and is configured to be moved to an actuated state in which the set of ports are fluidly coupled to each other through a first section of the chamber to define a first passageway and the set of conduits are fluidly coupled to each other through a second section of the chamber to define a second passageway. In the actuated state, the valve facilitates an inflow of a lubricant into a system through the first passageway to cause a concomitant purge and release of a used lubricant from the system through the second passageway.