Filter device for air conditioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air conditioning filters face challenges in maintaining high dust collection efficiency while minimizing pressure loss, especially when handling large airflow, which leads to increased fan load and the need for frequent filter replacements, resulting in higher costs and environmental impact.
Innovation Solution
A filter device with an electric dust collection unit and detachable filter units, including HEPA and auxiliary filters, that can be configured in series or parallel to optimize airflow capacity and reduce pressure loss, featuring a guide unit with an electrode portion and a separation prevention member to prevent filter separation and facilitate easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-efficiency particulate air (HEPA) class dust filtration is used for dust collection, then dust collection efficiency is improved, but the filter is easily contaminated and quickly deteriorates, requiring regular filter replacement
Solution Approach 1:
The filter system is divided into multiple filter units (first filter unit, second filter unit, third filter unit) that can be independently replaced. This segmentation allows only the contaminated filter units to be replaced while others continue to function, extending the overall system service life and reducing replacement frequency and cost.
Solution Approach 2:
The patent implements a selective replacement strategy where only contaminated or deteriorated filter units are discarded and replaced, while functional filter units are retained and recovered for continued use. This approach reduces waste and extends the service life of the filtration system.
2Productivity
If airflow through the filter increases to handle large airflow in air conditioning duct, then airflow capacity is improved, but loss of pressure increases and dust collection efficiency decreases
Solution Approach 1:
The filtration system is segmented into multiple filter units arranged in series, allowing the total airflow capacity to be distributed across multiple stages. Each filter unit operates at optimized pressure differential, maintaining high dust collection efficiency while handling large total airflow through cumulative capacity.
Solution Approach 2:
The patent increases filtration capacity by adding multiple filter units in the airflow path (series configuration), effectively adding a dimensional aspect to capacity expansion. This allows handling larger airflow volumes while maintaining efficiency through staged filtration rather than relying on a single large-area filter.
3Productivity
If the cross sectional area of filter is increased to handle large airflow, then airflow capacity is improved, but the overall space occupied by air conditioning duct inside building increases
Solution Approach 1:
Instead of increasing the cross-sectional area of a single filter to handle large airflow, the patent uses multiple filter units arranged in series along the airflow path. This transforms the capacity expansion from a two-dimensional area increase to a one-dimensional length extension, maintaining compact duct cross-sections while achieving high airflow capacity.
Solution Approach 2:
Multiple filter units are nested within the duct structure in a series arrangement, with each filter unit contained within the duct cross-section. This nesting approach allows multiple filtration stages to occupy the same duct space sequentially, maximizing airflow capacity without increasing overall duct footprint.
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 solution enhances dust collection efficiency while maintaining low pressure loss, reduces filter replacement frequency, and allows for flexible duct configurations, leading to reduced energy consumption and environmental impact.
Implementation Method 1
an electrifier for charging dust particles electrically and a dust collector for collecting the dust particles which have been charged
Implementation Method 2
a dust collector for collecting the dust particles which have been charged, by means of an attraction force generated between oppositely charged electrodes
Implementation Method 3
at least one filter unit provided to make contact with the electric dust collection unit, wherein the filter unit includes at least one of a dust collection filter, a free filter, a high-efficiency particulate air (HEPA) filter
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is a filter device for air conditioning in which pressure loss is low and dust collection efficiency is high. In the filter device for air conditioning installed in an air-conditioning duct, the filter device for air conditioning includes: a case; an electrical dust collection unit provided inside the case; at least one filter unit provided so as to make contact with the electrical dust collection unit; and a guide unit provided such that the electrical dust collection unit and the filter unit can be detachably installed.