Air Cleaning Device with Heated Circulation to Remove Soot and Odors
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Solution Overview
Problem
Conventional air cleaning devices installed in ducts primarily focus on filtering dirt and fail to effectively remove soot, smells, and bacteria from contaminated air, leading to reduced air cleaning efficiency and high maintenance costs due to frequent filter changes.
Innovation Solution
An air cleaning device with a housing, filter units, a circulation tube, a heater, and a blower that heats contaminated air in the circulation tube, circulating it through a filter unit to uniformly remove foreign substances, including soot and smells, and optionally uses a catalyst-coated filter to combust incompletely combusted smoke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter type air cleaning device is installed in the duct, then foreign substances such as dirt can be filtered from contaminated air, but soot, smell, and bacteria cannot be effectively removed and maintenance costs increase due to frequent filter changes
Solution Approach 1:
The patent introduces a heater that raises the temperature of circulating air to high levels (thermal parameter change), enabling the air itself to combust and remove soot and organic contaminants. This thermal parameter transformation allows the system to handle soot, smell, and bacteria that conventional filters cannot address, while the filter only needs to capture incombustible particles, reducing maintenance frequency
Solution Approach 2:
The patent uses hot air as an intermediary medium between the heater and the filter unit. The heated air circulates through the filter, providing thermal energy that enables combustion of organic contaminants on the filter surface. This intermediary hot air flow transforms the filter from a passive filtration device into an active thermal treatment system that self-cleans
2Reliability
If multiple plate type filters are sequentially disposed in the duct, then dirt can be removed from contaminated air, but the device complexity increases and maintenance costs become high
Solution Approach 1:
The patent makes the single filter unit perform multiple functions: it filters incombustible particles during normal operation and serves as a combustion chamber for organic contaminants when hot air circulates through it. This multi-functionality eliminates the need for separate filters for different contaminant types, reducing device complexity while maintaining comprehensive cleaning capability
Solution Approach 2:
The filter unit performs self-cleaning through the circulating hot air that combusts accumulated organic contaminants on its surface. This self-service mechanism eliminates the need for frequent manual cleaning or replacement of multiple filter units, reducing both device complexity and maintenance requirements
3Reliability
If filters are frequently cleaned and changed to maintain air cleaning efficiency, then air cleaning performance can be maintained, but maintenance costs increase and inconvenience increases
Solution Approach 1:
The patent implements continuous circulation of heated air through the filter unit, maintaining constant thermal treatment that prevents accumulation of combustible organic contaminants. This continuous useful action of thermal cleaning extends the operational life of the filter between maintenance cycles, reducing maintenance frequency and associated time loss without compromising air cleaning efficiency
Solution Approach 2:
The filter unit automatically cleans itself through the hot air circulation that combusts deposited contaminants. This self-service capability significantly reduces the frequency and time of manual maintenance interventions while maintaining consistent air cleaning performance, addressing both reliability and time loss concerns
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
Improves air cleaning efficiency by uniformly removing contaminants and reducing the need for frequent filter changes, while also effectively removing smells and combusting incompletely combusted smoke.
Implementation Method 1
The first heater (160) is installed inside the circulation tube (150) to heat air in the circulation tube (150)
Implementation Method 2
The blower (170) is installed inside the circulation tube (150) to deliver the air in the circulation tube (150) into the housing (110)
Implementation Method 3
when a second filter unit coated with a catalyst which decreases a combustion temperature of the foreign substances is disposed in the circulation tube (150), incompletely combusted smoke and the like can be combusted and removed
Implementation Method 4
The first filter unit (140) collects and separates foreign substances from the contaminated air in the housing (110)
Data Source
AI summary
An air cleaning device is disclosed. A first opening and closing member opens and closes an inlet of a housing. A second opening and closing member opens and closes an outlet of the housing. A first filter unit collects and separates foreign substances from contaminated air in the housing. A circulation tube has a first end portion disposed at the inlet to communicate with the housing and a second end portion disposed at the outlet to communicate with the housing. A third opening and closing member opens and closes the circulation tube. A first heater is installed inside the circulation tube to heat air in the circulation tube. A blower is installed inside the circulation tube to deliver air from the circulation tube into the housing.