DR.AIRE’s internal-circulation ESP units support direct indoor installation without the need for external exhaust, perfectly resolving the installation challenges associated with traditional exhaust systems.

This abstract specifies standard installation rules for kitchen exhaust purifiers, covering optimal layout, forbidden arrangement and special-site adjustments. The recommended layout places the purifier near the exhaust hood with a 0.5–1 m straight duct between them. The airflow sequence follows hood → fire damper → purifier → fan → high-level discharge duct. Hot grease mist is purified before condensation, maintaining high purification efficiency, minimizing grease deposition in ducts and cutting fire risks. Most grease contaminants are trapped by the purifier in advance, delivering clean air to the fan and rear ducts. This prevents grease buildup on fan impellers, stabilizes fan balance, reduces noise and lowers long-term maintenance and fire inspection costs. Installing the purifier after the fan is not advised. Unfiltered greasy fumes fill front ducts and create severe fire hazards. Direct contact with untreated fumes causes heavy grease adhesion on fan impellers, worsening fan performance and triggering potential ignition. Fan-induced negative pressure also leads to airflow short-circuit inside the purifier, letting unprocessed fumes escape and failing environmental emission tests. For limited space, shorten front ducts to keep the purifier close to the hood instead of mounting it at the end of long pipelines. Systems with high-negative-pressure centrifugal fans require upstream purifiers, fire dampers and regular duct cleaning. Electrostatic precipitators need flow equalizing screens or oil baffles to block liquid oil droplets and protect internal plates. The guidelines meet engineering, environmental and fire safety demands for kitchen ventilation design.

Does oil fume purifiers produce ozone?


Conclusion


Most commercial purifiers generate ozone. Mechanical filters barely produce it.



Electrostatic purifiers (mainstream)

High voltage ionizes air to form ozone.




Qualified dual-stage units: ≤0.1mg/m³ ozone (GB 18483-2001), slight smell only.
Dirty/low-quality machines: Grease causes sparking, excessive ozone irritates breathing.




UV composite purifiers

185nm UV makes twice more ozone; 254nm germicidal lamps create almost none.
Mechanical filters

No high voltage/UV, negligible ozone but low purification efficiency.



Causes of excess ozone


Dirty electrostatic cells, overhigh voltage, poor aging UV tubes, insufficient exhaust airflow.


Ozone reduction solutions



Clean cells every 2–3 months
Use purifiers with voltage control and ozone decomposition modules
Remove 185nm UV lights, keep 254nm lamps
Keep good kitchen ventilation
Install activated carbon boxes at exhaust outlets

Drying Time for Electrostatic collector cell, After Cleaning Plate electrodes take 10–24h air-drying; honeycomb types need 18–30h due to deep water traps. For rush jobs, blow water with low-pressure air then air-dry 4–6h, or use warm air under 50℃.Do not install until no water mist or drops stay on plates and ceramic insulators. Residual moisture causes sparking, tripping power or burnt high-voltage modules. Safe standard: fully air-dry 24h normally.

Can the voltage of the kitchen ESP fume purifier be manually adjusted?

Many restaurant and kitchen operators encounter a confusing problem: even after installing an Electrostatic Precipitator (ESP), visible smoke still discharges from the exhaust vent. This does not always mean the equipment is faulty. In most cases, it stems from mismatched configuration, improper operation, or neglected maintenance.

If you manage a commercial kitchen, having your Electrostatic Precipitator (ESP) frequently trip the circuit breaker is more than just an operational nuisance—it is a critical warning sign that threatens your kitchen's ventilation, safety, and environmental compliance. In commercial HVAC systems, the ESP acts as the "respiratory system," capturing grease and particulate matter to prevent hazardous buildup. When the high-voltage power supply repeatedly trips, it indicates that the electrostatic field is failing to maintain stability, directly leading to excessive emissions and potential fire hazards. Understanding the root causes of these electrical faults is essential for protecting your equipment and maintaining a safe kitchen environment.

Commercial kitchen electrostatic precipitators (ESPs) feature a broad price range from hundreds to over thsounds,even higher while with higher standards or capacities,with four core factors deciding the final cost for restaurants, canteens and food processing kitchens.