Injector Mount Curved Flow Path Mixing

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Solution Overview

Problem

Existing systems face challenges in ensuring effective mixing of a second fluid with a first fluid in a curved fluid flow path, leading to potential solid deposits at the injector, which can inhibit flow and affect the efficiency of chemical processes in emissions cleaning modules.

Innovation Solution

An injector mount with a specific inner surface configuration, including a recessed central region, a convex intermediate region, and a concave peripheral region, is designed to mount an injector adjacent a curved fluid flow path, ensuring consistent fluid flow and reducing the likelihood of fluid collection and recirculation, thereby maintaining a clean injector orifice and enhancing mixing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the injector is mounted adjacent a curved fluid flow path, then the second fluid can be injected into the first fluid for mixing, but the second fluid may collect in the region of the injector causing solid deposits

Engineering Contradiction:

Improvemixing effectivenessVSAvoidsolid deposits at injector

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The inner surface is divided into three distinct regions with different geometries: a recessed central region, a convex intermediate region, and a peripheral region. Each region has specific local characteristics that control fluid behavior in its vicinity, preventing fluid collection at the injector while maintaining effective mixing in the curved flow path.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The convex intermediate region with its curved surface creates favorable flow conditions by directing fluid away from the injector region. The curvature of the inner surface throughout the mount ensures smooth fluid passage and prevents dead zones where fluid could collect and form deposits.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Reliability

If the inner surface is configured with recessed and convex regions, then fluid flow consistency is improved and fluid collection is reduced, but the manufacturing complexity increases

Engineering Contradiction:

Improvefluid flow consistencyVSAvoidinner surface configuration

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The inner surface is segmented into three functional regions (recessed central, convex intermediate, peripheral), allowing each region to be optimized for its specific purpose while being manufactured as an integrated component. This segmentation enables complex flow control without requiring multiple separate parts.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9651012B2Injector mount

Publication Date: 2017.05.16 PERKINS ENGINES

AI summary

An injector mount for mounting an injector adjacent a curved fluid flow path includes an inner surface defining a boundary of the curved fluid flow path and an aperture between the inner surface and an outer surface. The aperture is configured to receive an injector. The inner surface includes a peripheral region, a central region recessed relative to the peripheral region, and an intermediate region including a convex surface that joins an inner edge of the peripheral region to an outer edge of the central region.