Inline Air Filtration with High-Velocity Flow Guide for Filter Life

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing air filtration systems in HVAC systems are inefficient due to the angle at which ambient air enters and is drawn through the filters, leading to premature filter replacement and reduced airflow throughput, increasing maintenance costs.

Innovation Solution

A high-velocity air processing system that includes a housing, a filter assembly, and a high-velocity air flow guide, which accelerates ambient air to increase the effective surface area of the filters, ensuring that a greater portion of the air flow is processed through the filtration system while maintaining adequate airflow for the primary fan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If ambient air is drawn through filters at a standard angle, then the filtration process is simple, but only a relatively small area of the air filter is used effectively leading to premature filter replacement

Engineering Contradiction:

Improveeffective filter surface areaVSAvoidfilter service life

Core Design Contradiction:

Area of stationary objectVSDuration of action of moving object

Solution Approach 1:

The patent introduces a curved or angled air flow guide that redirects air flow from a standard angle to a high-angle trajectory, effectively utilizing the vertical dimension and lateral surfaces of the filter assembly. This dimensional change allows air to contact filter media that would otherwise remain unused, significantly increasing the effective filter surface area and extending filter service life.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent changes the air flow angle parameter from a standard horizontal or low-angle entry to a high-angle trajectory. This parameter change transforms how air interacts with the filter media, enabling the system to utilize previously underused portions of the filter surface and thereby extend filter life.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If air flow throughput is increased to improve system performance, then HVAC efficiency improves, but air filters become clogged more quickly requiring frequent replacement

Engineering Contradiction:

Improveair flow throughputVSAvoidfilter service life

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

By redirecting air flow through a curved path that utilizes the lateral and vertical surfaces of the filter assembly, the system effectively increases the available filter surface area by several times. This allows the same volumetric air flow throughput to be achieved while distributing the filtration load across a much larger surface area, thereby extending filter service life even at high throughput rates.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Productivity

If a larger portion of air flow is processed through filtration, then air quality improves, but the primary fan may become starved of adequate airflow

Engineering Contradiction:

Improveair processing volumeVSAvoidfan operation stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the air flow path into multiple zones using curved guides and angled entry points. This segmentation allows different portions of the air stream to be directed through different sections of the filter assembly, enabling comprehensive air processing while maintaining adequate flow distribution that prevents fan starvation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The curved air flow guide introduces dimensional complexity to the air path, creating a multi-dimensional flow distribution pattern. This ensures that air is processed through the filtration system in a way that maintains adequate velocity and pressure throughout, preventing fan starvation while still achieving high air processing volumes.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 solution extends the life of air filters, reduces maintenance costs, and ensures that all air in the HVAC system is ultimately processed through the filtration system, preventing primary fan starvation and maintaining system performance.

Implementation Method 1

The second portion is configured to accelerate the air flow from a first speed to a second speed into the chamber prior to the fan drawing the ambient air from the chamber through the filter assembly

Methodology Applied

Scientific EffectAcceleration: