Electrostatic Smoke Precipitator | ESP Cell Filter

Saifilter ESP Cell Filter is critical to commercial oil fume purification systems. It is mainly used to remove grease, oil, and smoke from gas to ensure that the air discharged into the environment complies with local regulations. The Filter Element within the ESP Cell is crucial, as it facilitates the efficient capture and removal of contaminants, ensuring consistent performance and compliance with environmental standards. 

The Electrostatic Smoke Precipitator uses the electrostatic adsorption principle to generate a very low-energy electric solid field through the ionization electrode so that smoke and aerosols are adsorbed by the electrostatic attraction caused by the collection plate. It can intercept most particles below 10 microns, the efficiency can reach 90-98%, and the pressure drop of the entire Electrostatic Filtration System is low. Regularly cleaning the collection plate's surface ensures that the ESP Cell maintains a high filtration efficiency in a long-term operating environment.

Electrostatic Filters
Electrostatic Air Filters

ESP Cell Filter How it Works

When the gas enters the ESP Cell Filter, it passes through an ionization, causing particles in the gas flow to be positively charged. Upon entering the set collector portion of the ESP cell, the positively charged particles are attracted like magnets to the negatively charged plates, thereby capturing and removing contaminants from the airflow. This eliminates replacing expensive filters and reduces electrostatic filter unit maintenance costs.


Sawtooth Ionization Technology

Saifilter sawtooth ionization technology adopts a double-row staggered sawtooth design. The shape of each sawtooth matches the ionization area, effectively expanding the ionization range and enhancing the discharge effect.

Each serrated tip is designed as an independent Corona Discharge and complements and enhances each other. Under the same voltage condition, this design can increase the intensity of Corona Discharge, thereby improving the efficiency of ESP Air Cleaner.

The advantage of Saifilter sawtooth ionization technology is that it makes full use of the geometry of the sawtooth shape, allowing each tip to Corona Discharge more efficiently by cleverly designing the Corona Discharge area. Applying this design in Electrostatic Air filter equipment can significantly improve the purification efficiency of ESP Cells.


Large Area Oil Mist Collection Electrical Panel

Electrostatic filter cells

The large-area dust collection area is formed using densely arranged collection electric plates. The spacing between these plates is 5-8mm, ensuring that fine particles can be effectively adsorbed under high electromagnetic force. In addition, the width of the dust-collecting container reaches 360mm, further providing that fine particles cannot escape.

This design is characterized by its large oil mist collection area, which brings significant purification effects despite its higher cost. The tight arrangement and sufficient width of Electrostatic Filter dust collection plates provide ideal conditions for capturing fine particles.

Although this may increase manufacturing costs, it is a design worth investing in for applications that have strict requirements on purification effects.

High Conductivity Oil Mist Collecting Aluminum Electrical Panel

Saifilter oil mist collection area material is made of high-quality aviation aluminum material (1060H24), with a standard thickness range of 0.8-1.0mm and high electrical conductivity. The electrical conductivity of this kind of aluminum is more than four times that of stainless steel. Conductivity is an essential factor affecting oil mist purification efficiency.

The high conductivity ensures that the oil mist collection area can respond to electromagnetic forces more effectively, enhancing the ability to adsorb and capture fine particles. In contrast, compared with traditional stainless steel, this aviation aluminum material is lighter, allowing the current collector plate to reduce the weight of the overall device while maintaining efficient performance.

ESP cell filter

High Voltage Insulators High Voltage Insulators

ESP Air Cleaner

The oil-resistant ceramic high-voltage insulator in the ESP (Electrostatic Precipitator) Cell is crucial to ensure the stable operation of Electrostatic Filter Units. Able to safely isolate and maintain high ionization operations in ESP Cells.

These high-voltage ceramic insulators are designed with the wet and grease environments in operation in mind. The smoothness and denseness of the surface help reduce the adhesion of dust or other contaminants. Its corrosion resistance also enables long-term stable operation in humid and potentially corrosive environments.

M5 bolts are embedded inside the high-voltage insulator, and the external lugs are easy to fix and can effectively prevent overhang. These insulators are also mechanically strong enough to withstand possible vibrations and other mechanical stresses. They are indispensable and essential components in the Electrostatic Smoke Precipitator, providing a reliable foundation for efficient oil mist collection and air purification.

Usually, two types of pollutants can be collected in the ESP Cell Filter. One is the liquid dripping from the collection plate, which will be effectively contained in the recovery tank. The oil released during this process can be recycled and reused.

Another type of contamination occurs in the form of grease or solid deposits that form on the filter surface. These sediments can contain particulate matter and other contaminants. Developing this deposit usually requires regular maintenance and cleaning to ensure the long-term efficient operation of the static collection unit.

By collecting and processing these two pollutants, ESP Cell Filter can effectively separate impurities in the air and improve the sustainable operation capabilities of Electrostatic Filter Units. The ESP Cell Filter can be cleaned regularly, ensuring efficient separation performance without replacing the filter element.

ESP cell
Commercial kitchen air filter


ModeSizeAir Flow


  • Modular design: easy to disassemble and assemble, washable with water, and easy to maintain.
  • Low-pressure drop: This helps save energy and improve air circulation efficiency.
  • Long Life: With proper cleaning and maintenance, reduce the frequency of filter replacement.
  • Suitable for various particles: It can capture large particles and effectively intercept small particles, making it ideal for multiple environments and application scenarios.
  • Robust customizability: customized production can be done according to different unit systems and air purification requirements.
  • High Purification Efficiency: It can kill bacteria, viruses, mold, and other airborne pathogens, with a purification rate of up to 98%. Powerfully removes oil mist, second-hand smoke, odor, and TVOC in the air.


  • High Efficiency for Particulate Removal: ESPs are highly efficient at removing fine particulates from the air, such as dust, smoke, and pollen, even those as small as 0.1 microns in diameter.
  • Energy Efficiency: They generally consume less energy than other filtration methods, making them cost-effective for power consumption.
  • Low Operating Costs: ESPs have low maintenance and operating costs. Unlike traditional mechanical filters, they do not require frequent replacement of filter materials.
  • Environmentally Friendly: Since they reduce the emission of particulates into the atmosphere, they are beneficial for the environment. This is particularly important in industrial applications where emissions need to be controlled.
  • Customizable Design: ESPs can be designed and customized to fit various industrial applications and air volume requirements.
  • Durability and Longevity: These systems are known for their durability and can last for many years with proper maintenance, making them a long-term solution for air filtration.
  • Handling High Airflow Rates: ESPs can handle large volumes of air, making them suitable for industrial and commercial applications where high airflow rates are required.
  • Reduced Fire Hazard: Since they don’t accumulate significant amounts of flammable materials, ESPs present a lower fire hazard than filters that trap and hold large amounts of particulate matter.


  • Shopping Center
  • Medical Facilities
  • Hotels And Catering
  • Production Workshop
  • Laboratories And R&D Centers
  • Electronic Factory

Relevant Products


The standard wire mesh configuration of the filter disc is ideal for a low-cost filtration solution.

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Designed to provide you with compact elements for reliable filtration protection.

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Can be customized according to customers' specific specifications and requirements or provide OEM services

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An Electrostatic Precipitator (ESP) filter works by applying a high-voltage electrostatic charge to particles in the air passing through it. This process starts with the ionization of air molecules, which then attach to dust, pollen, bacteria, virus particles, and other airborne contaminants. These charged particles are then attracted to plates or collection cells with an opposite charge. As a result, the contaminants get captured on these plates, effectively removing them from the air stream.

ESP cells, also known as collection plates or cells, are key components of an electrostatic precipitator. These are the surfaces within the ESP where the charged airborne particles are collected. Typically made of metal, these cells create a field of opposite charge to the ionized particles in the air. The effectiveness of ESP cells depends on factors like their size, number, spacing, and the voltage applied. Regular cleaning of these cells is crucial to maintain the efficiency of the ESP.

In HVAC (Heating, Ventilation, and Air Conditioning) systems, an ESP filter improves air quality by removing particulate matter. These filters are handy in environments where air purity is critical, such as in hospitals, laboratories, or industrial settings. The ESP in HVAC systems charges particles in the air and traps them on collector plates, thereby preventing these particles from circulating through the air system. This not only purifies the air but also helps maintain the HVAC system's efficiency by reducing particle build-up in ducts and machinery.

The primary purpose of an electrostatic filter is to improve air quality by removing particulate contaminants from the air. This includes dust, pollen, smoke, mold spores, bacteria, and virus particles. Electrostatic filters are highly efficient at capturing wonderful particles, making them ideal for environments where air cleanliness is paramount. Unlike disposable filters, they are also energy-efficient and cost-effective since they can be cleaned and reused. Additionally, these filters help reduce the load on HVAC systems by keeping the air passages cleaner, thereby enhancing overall system efficiency and longevity.


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