Spacer Fabric Solids Filter for Long-Life High-Throughput Filtration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional filter elements in vacuum cleaners and exhaust gas cleaning systems have a rapidly decreasing filter performance and short service life, requiring frequent replacements and leading to increased noise, energy consumption, and heating issues.
Innovation Solution
A solids filter utilizing a spacer fabric with high fluid throughput and adjustable density, allowing for a multi-layer structure with electrostatic properties, which can be reused and cleaned, maintaining high filter performance and extending service life while reducing noise and energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional filter elements are used, then initial filter performance is achieved, but filter performance decreases rapidly and service life is short
Solution Approach 1:
The filter element is divided into multiple independent filter layers (first filter layer, second filter layer, third filter layer) with different pore sizes and functions. Each layer handles different particle sizes and can be cleaned independently, extending service life while maintaining consistent filter performance across all layers
Solution Approach 2:
The patent changes the physical parameters of the filter structure by using a three-dimensional spacer fabric with specific thread group configurations (IXI-shape, YI-shape, etc.) and varying pore sizes across layers. This creates optimal fluid dynamics and particle capture efficiency that maintains performance over extended periods
2Reliability
If filter density is increased to improve filter performance, then filtration efficiency increases, but fluid throughput decreases
Solution Approach 1:
Each filter layer has different local qualities with specific pore sizes optimized for different particle sizes. The first layer has larger pores for coarse particles, while subsequent layers have progressively smaller pores for finer particles, allowing high throughput while maintaining overall filter performance
Solution Approach 2:
The patent transitions from two-dimensional flat filters to three-dimensional spacer fabric structures with depth and volume. This adds a spatial dimension that increases surface area and filtration capacity without increasing density, maintaining fluid throughput while improving filter performance
3Reliability
If disposable filter elements are used, then initial filter performance is achieved, but replacement frequency increases and costs increase
Solution Approach 1:
Instead of discarding the entire filter element when performance degrades, the patent enables recovery and reuse of all filter layers through cleaning processes. Each layer can be independently cleaned to remove accumulated solids, restoring filter performance and eliminating the need for frequent replacements
Solution Approach 2:
The filter structure is designed to be self-maintaining through its cleanable architecture. The spacer fabric construction allows solids to be removed via rinsing, blowing, or ultrasound cleaning, enabling the filter to restore its own performance without external intervention or replacement
4Reliability
If motor speed is increased to maintain filter performance, then filtration efficiency is maintained, but noise level increases and energy consumption increases
Solution Approach 1:
The multi-layer filter structure provides continuous and consistent filtration across all layers, maintaining stable pressure drop and airflow characteristics. This eliminates the need for motor speed fluctuations and ensures continuous efficient operation at optimal noise and energy levels
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
The spacer fabric filter achieves long-lasting high filter performance, reduces noise and energy consumption, and allows for cost-effective reuse, optimizing filter efficiency and service life in both vacuum cleaners and exhaust gas cleaning systems.
Implementation Method 1
The spacer fabric is formed electrostatically and/or the spacer threads are formed electrostatically
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a solids filter (4), in particular for a vacuum cleaner or an exhaust gas cleaning system, wherein at least one filter element (18) is implemented for filtering solids (11) from a fluid flow (7) as an interwoven spacer comprising two cover layers (21, 22) disposed transverse to a flow direction (3) and spacing threads (23) running between said layers. The solids filter (4) comprises a long service life together with a high level of filter effectiveness.