Antigen Supply Duct Mixing for Uniform Chamber Concentration
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Solution Overview
Problem
Conventional antigen supply devices for antigen exposure chambers suffer from non-uniform antigen concentration, difficulty in cleaning, and issues with static electricity, leading to mold growth and humidity control challenges.
Innovation Solution
An antigen supply device configured with a cylindrical member near the outdoor air diffuser, featuring an axial fan for mixing high-concentration antigens with chamber air and outdoor air, and incorporating a cleaning water system to prevent adhesion and facilitate easy cleaning, using conductive materials to manage static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If antigens are supplied directly from a dust feeder into an antigen exposure chamber, then antigen supply is achieved, but antigen concentration in the chamber becomes non-uniform
Solution Approach 1:
The patent introduces an air duct system as an intermediary between the dust feeder and the exposure chamber. Antigens are first supplied into the air duct where they mix with air flow, then distributed uniformly throughout the chamber. This intermediary system transforms direct point-source injection into distributed uniform supply.
Solution Approach 2:
The patent uses air flow through the duct system to transport and distribute antigens. The pneumatic system creates uniform dispersion of antigens by utilizing air currents to carry antigen particles throughout the chamber, achieving uniform concentration distribution.
2Duration of action of stationary object
If the antigen supply device is used for extended periods with the same antigens, then continuous operation is achieved, but mold grows on remaining antigens
Solution Approach 1:
The patent implements a cleaning system that periodically removes accumulated antigens from the duct. The cleaning mechanism introduces cleaning air or fluid to flush out residual antigens, preventing mold growth while allowing continuous operation. This discarding of accumulated material prevents harmful effects.
Solution Approach 2:
The patent maintains continuous antigen supply while simultaneously implementing continuous or periodic cleaning actions. The system operates continuously by alternating between antigen supply mode and cleaning mode, ensuring both uninterrupted operation and prevention of mold growth through regular maintenance.
3Productivity
If the antigen supply device is not sufficiently dried, then operation is maintained, but humidity control in the chamber becomes impossible
Solution Approach 1:
The patent extracts moisture from the duct system using a drying mechanism. After cleaning operations, the drying system removes residual water from the duct to prevent humidity issues. This extraction of harmful moisture maintains both operational continuity and proper humidity control.
Solution Approach 2:
The patent changes the physical state of water in the duct from liquid to vapor through heating or other drying methods. By transforming the parameter state of moisture, the system eliminates liquid water that would cause humidity problems while maintaining operational capability.
4Device complexity
If special measures are not taken against static electricity, then device simplicity is maintained, but antigens adhere to the supply device
Solution Approach 1:
The patent implements a self-cleaning mechanism where air flow automatically removes adhered antigens from the duct surfaces. The continuous air circulation serves dual purposes: supplying antigens and simultaneously cleaning the duct walls, eliminating the need for complex anti-static measures.
Solution Approach 2:
The patent converts the potentially harmful effect of static electricity into a beneficial cleaning mechanism. By allowing some static adhesion to occur, then using strong air flows to remove the adhered antigens, the system turns adhesion into a temporary holding mechanism followed by systematic removal.
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 achieves uniform antigen distribution, easy antigen changes, prevents mold growth, and allows for precise humidity control by ensuring thorough cleaning and drying of the exposure chamber.
Implementation Method 1
an axial fan that generates a flow of the air flowing upward in an axial direction of the cylindrical member is attached above the air suction port
Implementation Method 2
mixing the antigens with the air sucked from the antigen exposure chamber and diluting the antigens, and moreover mix the antigens with the outdoor air from the outdoor air diffuser
Implementation Method 3
The antigen supply device is mainly configured by a cylindrical member... made of metal or conductive resin in order to prevent adhesion of the antigens due to static electricity
Data Source
AI summary
An antigen supply device 1 according to the present invention is mainly configured by a cylindrical member 3 extending in the vertical direction. An air suction port 5 for sucking the air in the antigen exposure chamber is provided at a lower end of the cylindrical member. An axial fan 6 that generates a flow of the air flowing upward in an axial direction of the cylindrical member is attached above the air suction port of the cylindrical member. Moreover, a supply port 4 through which high-concentration antigens are jetted from a dust feeder on the outside of the antigen exposure chamber is provided above the axial fan of the cylindrical member. The antigen supply device 1 is disposed near the outdoor air diffuser of the antigen exposure chamber, and configured to blow out high-concentration antigens, which are supplied from the dust feeder on the outside of the antigen exposure chamber, to the outdoor air diffuser 2 from an upper end of the cylindrical member after mixing the antigens with the air in the antigen exposure chamber sucked from the air suction port and diluting the antigens, and moreover mix the antigens with the outdoor air from the outdoor air diffuser to fill the antigen exposure chamber A with the mixture of the antigens and the outdoor air.