Cylindrical IFD Filter with Variable Cross-Section Channels
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Solution Overview
Problem
Existing air ventilation and purification systems face challenges such as rapid decline in filtering efficiency, poor air distribution, high noise, potential harmful by-products, difficulty in maintenance, and limited intelligence in regulating indoor and outdoor air quality, while also needing to maintain aesthetics and integrity of buildings.
Innovation Solution
A cylindrical Intense Field Dielectric (IFD) filter with a dust collecting module and field power module arranged coaxially, featuring ring-shaped cross-sections and vertically stacked fan-shaped channels with increasing cross-sectional area, allowing for efficient particulate contaminant charging and collection with minimal airflow impedance and slow decline in filtering efficiency over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If plate structure IFD charge module and filter screen are used, then the structure is simple, but the application is limited and filtering efficiency declines rapidly over time
Solution Approach 1:
The patent applies cylindrical curvature to the IFD charge module and filter screen, transforming the traditional plate structure into a cylindrical configuration. This curvature enables the air flow to follow a rotational path through multiple channels, increasing the interaction time between charged particles and collection surfaces. The cylindrical design with multiple stacked channels maintains structural simplicity while significantly improving filtering efficiency stability by allowing continuous operation without rapid performance degradation.
Solution Approach 2:
The invention transitions from a two-dimensional plate structure to a three-dimensional cylindrical structure with vertical stacking of multiple channels. This dimensional change allows air to flow through multiple levels of channels arranged radially, increasing the effective filtering path length and surface area without proportionally increasing device volume. The vertical stacking of channels in the cylindrical configuration enables sustained filtering efficiency over time while maintaining compact dimensions.
2Ease of manufacture
If fan and IFD purification unit are arranged independently, then the components are easy to install, but air distribution is poor and resistance is high
Solution Approach 1:
The patent integrates the fan and IFD purification unit into a unified cylindrical structure where the fan is positioned at the center and the purification channels are radially arranged around it. This merged configuration allows the fan to directly drive air through the purification channels without separate air paths, eliminating dead zones and improving air distribution efficiency. The integrated design reduces overall resistance by creating a streamlined flow path from air intake through the channels to exhaust, while maintaining ease of installation as a single modular unit.
3Device complexity
If cross-sectional area of channels is constant, then the structure is simple, but airflow impedance is high and filtering efficiency is limited
Solution Approach 1:
The patent implements variable cross-sectional area channels where the area increases progressively from the air intake end to the exhaust end. This dynamic channel design allows the air flow to expand as it moves through the channels, reducing velocity and increasing residence time for particle collection. The gradual expansion of channel area along the flow direction reduces turbulence and pressure drop, improving filtering efficiency without requiring excessively complex channel geometries. The variable cross-section is achieved through carefully designed channel walls that expand radially outward along the flow path.
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 cylindrical IFD filter achieves higher particulate contaminant charging and filtering efficiency, slow decline in filtering performance, expanded application scope with central air intake and peripheral exhaust, and self-designed module capabilities for improved air purification and ventilation.
Implementation Method 1
The IFD, that is Intense Field Dielectric, refers to a strong electric field by using dielectric materials as the carrier. The dielectric materials form a cellular-shaped micro channel and wrap the electrode pads to form a strong electric field in the channel.
Implementation Method 2
The IFD exerts a strong attraction to the charged particles in the air, and can absorb almost 100% airborne particles whilst generating minimum airflow impedance
Implementation Method 3
Furthermore, the IFD, with high efficiency sterilization function, can collect the bacteria and microorganism which are attached on the particles and kill them in the intense field.
Data Source
AI summary
The present invention discloses a cylindrical IFD filter, comprising a dust collecting module and a field power module interval arranged inside the channel of the dust collecting module, a plurality of field power module units are symmetrically and vertically spaced arranged on the side wall of the field power module; a plurality of layers of the dust collecting module channels which are stacked vertically are pass-through arranged on the dust collecting module, and each barrier wall between the vertical adjacent dust collecting module channels is alternately disposed as a pair of positive plate and negative plate, each barrier wall between the vertical adjacent dust collecting module channels comprises polar plate electrode and a polar plate coating coated on the upper and bottom walls of the polar plate electrode; and each barrier wall between the lateral adjacent dust collecting module channels adopts same coating material as the polar plate coating. The present invention has the advantages of having larger particulate contaminant charge and higher filtering efficiency.