Understand the core functions of aerosol generators

An aerosol generator is a device used for generating and dispersing aerosol particles, with its core functions centered around the generation, control, and application of aerosols. The following is a detailed analysis of the core functions of aerosol generators:
1、 Aerosol generation
1. Particle atomization
Function: Disperse liquid or solid substances (such as salt solutions, oils, pollen, bacteria, etc.) into small particles to form aerosols.
Technology:
Ultrasonic atomization: Breaking liquid into nano-sized particles through high-frequency vibration.
Spray atomization: Using high-pressure airflow to spray and disperse liquid into aerosols.
Laser evaporation: Material is evaporated instantly by laser energy, forming aerosols.
Application: Simulating particulate pollution in the atmosphere, conducting drug inhalation experiments, researching smoke propagation, etc.
2. Particle size control
Function: Control the size and distribution of aerosol particles by adjusting parameters such as pressure, temperature, vibration frequency, etc.
Meaning: Ensure that the generated aerosols meet the experimental or detection requirements.
2、 Aerosol transport and diffusion
1. Airflow control
Function: Transport aerosols to designated areas (such as laboratories, wind tunnels, exposure chambers, etc.) through an airflow system.
Technology:
Adjust the airflow speed and direction using fans, compressors, or vacuum systems.
Achieve uniform distribution through pipelines or diffusers.
Application: Simulate the spread of air pollution and study the propagation patterns of aerosols indoors and outdoors.
2. Concentration regulation
Function: By diluting or concentrating aerosols, adjust their concentration to meet experimental requirements.
Technology:
Introduce clean air to dilute high concentration aerosols.
Use filters or electrostatic precipitation devices to remove some particles.
Application: Study the effects of different concentrations of aerosols on human body or environment.
3、 Aerosol detection and analysis
1. Real time monitoring
Function: In conjunction with particle size analyzers, spectrometers, sensors and other equipment, real-time detection of aerosol particle size, concentration, chemical composition and other parameters.
Application: Verify the aerosol generation effect and provide data support for experiments.
2. Sampling and Collection
Function: Capture aerosol particles through samplers such as filter membranes and centrifugal collectors for subsequent analysis.
Application: Study the physical properties, chemical composition, or biological effects of particles.