Sniffer Probe Bypass Opening for Fast Leak Detection and Localization

Solution Overview

Problem

Existing gas leak detectors face a trade-off between fast leak detection at a distance and accurate localization, where large gas flow rates facilitate detection but reduce spatial resolution, while reducing flow rates improve accuracy at the cost of detection speed.

Innovation Solution

A sniffer probe with a bypass opening or attachment that allows selective control of gas flow, enabling high flow rates for distant detection and precise localization by diverting a portion of the flow through the bypass, maintaining overall flow consistency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the gas flow rate through the sniffer probe is increased to enable fast leak detection at a distance, then the detection range and speed are improved, but the spatial resolution and accuracy of leak localization deteriorate

Engineering Contradiction:

Improvedetection speedVSAvoidspatial resolution

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The gas flow path is segmented into two separate channels: a main channel for high-volume gas flow to enable distant detection, and a bypass channel with a closure member for controlled gas flow to enable precise leak localization. This segmentation allows the system to switch between detection modes by controlling which channel is active.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The closure member (valve) dynamically controls the bypass opening to selectively open or close the bypass channel, enabling the system to adapt between two operational states: high flow rate for distant detection and low flow rate for precise localization, thus resolving the contradiction between speed and precision.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If the gas flow rate is reduced to improve the accuracy of leak localization, then the spatial resolution is improved, but the detection speed and range decrease

Engineering Contradiction:

Improveaccuracy of leak localizationVSAvoiddetection speed

Core Design Contradiction:

Measurement precisionVSSpeed

Solution Approach 1:

The gas flow path is segmented into two separate channels: a main channel for high-volume gas flow to enable distant detection, and a bypass channel with a closure member for controlled gas flow to enable precise leak localization. This segmentation allows the system to switch between detection modes by controlling which channel is active.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The closure member (valve) dynamically controls the bypass opening to selectively open or close the bypass channel, enabling the system to adapt between two operational states: high flow rate for distant detection and low flow rate for precise localization, thus resolving the contradiction between speed and precision.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a single gas flow rate is used for both distant detection and precise localization, then the device complexity is reduced, but the versatility and adaptability of the detection system deteriorate

Engineering Contradiction:

Improvestructure simplicityVSAvoiddetection mode flexibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The sniffer probe is designed with multi-functionality by incorporating both a main channel and a bypass channel with a closure member, allowing the single device to perform two distinct functions: distant leak detection using the main channel and precise leak localization using the bypass channel, thus achieving versatility without requiring multiple separate devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enhances detection range while improving spatial resolution by selectively adjusting gas flow through the bypass opening or attachment, ensuring accurate leak localization without significant flow disruption.

Implementation Method 1

a vacuum pump (20) for drawing gas from the atmosphere through the gas inlet (28) and to supply it to the gas detector (22)

Methodology Applied

Scientific EffectVacuum: Vacuum

Data Source

PatentUS12540874B2Sniffer probe having a bypass opening, for a gas leak detector

Publication Date: 2026.02.03 INFICON GMBH

AI summary

A sniffer probe for a gas leak detector, which gas leak detector has a vacuum pump for drawing in gas through the sniffer probe in accordance with the sniffing principle and a gas detector for analyzing the gas flow drawn in, the sniffer probe comprising: a gas inlet for the gas flow drawn in, a gas outlet, which can be connected to the gas leak detector, and a channel, which gas-conductingly connects the gas inlet to the gas outlet, is characterized in that the sniffer probe has a bypass opening, which gas-conductingly connects a portion of the channel located between the gas inlet and the gas outlet to the outer environment of the sniffer probe, the bypass opening having an actuatable closure for selectively opening and closing the bypass opening.