Flow measuring device and method for flow measurement

The flow measuring device with non-circular cross-sectioned flow resistance elements and a flow control device integrated into a single injection-molded part addresses the challenges of achieving optimal flow characteristics and cost-effectiveness in compact designs, ensuring precise and reliable flow measurement.

DE102025121694B3Active Publication Date: 2026-05-21IFM ELECTRONIC GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
IFM ELECTRONIC GMBH
Filing Date
2025-06-03
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing flow measuring devices face challenges in achieving optimal flow characteristics, design flexibility, and cost-effectiveness, particularly in small and compact designs, due to the use of throttles, orifices, and nozzle inserts, which increase complexity and cost, and struggle to maintain a homogeneous and symmetrical flow profile.

Method used

A flow measuring device with a bypass configuration featuring non-circular cross-sectioned flow resistance elements and a flow control device to adjust and rectify the flow profile, integrated into a single injection-molded part, ensuring a homogeneous and symmetrical flow at the measuring element, even in small designs.

Benefits of technology

This configuration enables precise and reliable flow measurement by ensuring a well-defined, symmetrical flow profile, reducing manufacturing costs and complexity, and improving accuracy and reliability, especially in compact devices.

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Abstract

The invention relates to a flow meter (DMV) for fluid systems, comprising a main channel (1) and a bypass channel (5) connected to the main channel (1) via branch lines (3). A pin-shaped flow resistance element (4) with a non-circular cross-section for flow control and a flow control device (8, 11) for generating a homogeneous, unidirectional flow at the measuring element (6) are arranged in the bypass channel (5). This combination enables precise and reliable flow measurement, which is particularly suitable for small device designs.
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