Kitchen Exhaust

An Ozone Generator for Kitchen Exhaust is an industrial ozone production system engineered to treat exhaust air from commercial kitchens, restaurants, food courts, and other high-temperature cooking environments. Kitchen exhaust air streams carry grease aerosols, odorous compounds, smoke, volatile organic compounds (VOCs), and other pollutants that, if left untreated, accumulate in ductwork, cause foul odors, degrade air quality, and increase fire hazards.

Ozone (O₃), a strong oxidizing gas produced on-site, is injected into the exhaust stream after the exhaust fan and before a contact chamber to chemically oxidize greasy aerosols, odor molecules, and microbial contaminants. After reaction, ozone reverts back to oxygen, leaving no harmful chemical residues while contributing to cleaner exhaust air, reduced odors, lower maintenance requirements, and improved safety in ventilation systems.

Core Technology & Data

Ozone Generation & Mechanism

Ozone generators convert oxygen (O₂) from ambient air into ozone (O₃) using high-voltage electrical discharge (corona discharge). The extra oxygen atom makes ozone highly reactive, enabling it to oxidize organic compounds, grease particulates, odors, and other pollutants in the exhaust stream.

Ozone injection in exhaust air ducts increases oxidation contact time, a key parameter that allows sufficient reaction between ozone and pollutants to achieve effective treatment.

How It Works in Kitchen Exhaust Systems

• Ozone is injected into the exhaust airflow downstream of the hood but upstream of a contact chamber or baffle system to enable ozone–pollutant interaction.
• The injected ozone reacts with grease aerosols, VOCs, smoke compounds, and odor molecules, breaking them down into water vapor, carbon dioxide, and fine non-sticky by-products that pass through the duct system.
• Oxidation helps reduce visible smoke, neutralize odors, and limit buildup of greasy deposits that would otherwise adhere to duct walls and exhaust components.
• With proper design, ozone treatment suppresses microbial contaminants such as bacteria and mold spores within duct airflow.
• Ozone purity and contact time are calibrated based on exhaust airflow, duct length, grease load, and cooking intensity to ensure efficient oxidation before air discharge.

Benefits & Performance Highlights

• Grease & Odor Oxidation: Breaks down grease aerosols and cooking odors at the molecular level, improving exhaust air quality and reducing duct contamination.
• Reduced Fire Risk: Continuous oxidation limits buildup of flammable residues inside exhaust ductwork, lowering the risk of duct fires.
• Cleaner Exhaust Air: Ensures exhaust air released to the environment is less odorous, cleaner, and more compliant with air quality expectations.
• Lower Maintenance & Costs: Reduces grease deposition, extending duct cleaning intervals and lowering labor and service expenses.
• Ventilation System Longevity: Minimizes corrosive and sticky deposits that degrade fans, filters, and duct linings over time.
• Environmental & Compliance Advantages: Generated on-site from air and electricity, ozone leaves no chemical residues and supports sustainable kitchen ventilation practices.