Commercial In-Duct Electrostatic Precipitator
Polygee in-duct ESP systems are engineered for commercial kitchen exhaust purification. Featuring patented dual-zone plate-type electrostatic field technology and SUS304 stainless steel collector cells, these units deliver 90%–99% filtration efficiency for grease, smoke, and oil mist removal. Available in three product series — LK-K (≥98%), LK-D (≥95%), and LK-A (≥90%) — with airflow capacity from 4,000 to 60,000+ m³/h. Modular stackable design with UV odor control and activated carbon options.
Product Photos
Three series of in-duct ESP units designed for different filtration requirements and budgets.
Front View
Side / Open View
ESP Cell Pull-out
Installed Scene
Three ESP Series for Every Application
Choose the right series based on your filtration requirements, budget, and installation environment.
LK-K Series
- Airflow: 4,000 – 60,000 m³/h
- Pressure Drop: <150 Pa
- 13 models: LK4K – LK60K
- Powder-coated housing (yellow)
- Smart power supply with auto arc suppression
- UV lamps: 2–18 units
- IP55 waterproof & dustproof core
LK-D Series
- Airflow: 4,000 – 48,000 m³/h
- Pressure Drop: ≤150 Pa (≤50 for small models)
- 12 models: LK40D – LK480D
- Blue housing with smart HMI panel
- Intelligent power with fault diagnostics
- UV lamps: 2–12 units
- IP55 waterproof & dustproof core
LK-A Series
- Airflow: 4,000 – 48,000 m³/h
- Pressure Drop: <150 Pa
- 13 models: LK40A – LK480A
- Powder-coated housing (yellow)
- Stainless steel core, durable design
- UV lamps: 2–12 units
- IP55 waterproof & dustproof core
Trusted Across 50+ Countries
Polygee in-duct ESP systems are engineered for any commercial kitchen environment.
Restaurant Kitchen ESP
Chinese wok, Western grill, Japanese teppanyaki — customized ESP for every cooking style and kitchen size.
Hotel Kitchen ESP System
Centralized ESP solution for banquet halls, all-day dining, specialty restaurants & room service kitchens.
Chain Restaurant ESP
Standardized ESP for multi-location rollouts. McDonald’s, Haidilao, Pizza Hut & more trust Polygee.
Food Court ESP Purification
Centralized ESP handling 60,000+ m³/h from multiple vendors. Modular scalable design.
BBQ Smoke Control ESP
Heavy-smoke environments. ESP + UV-C combo eliminates smoke and intense cooking odors.
School & Institutional Canteen
University canteens, government cafeterias, factory dining halls — Polygee serves 100+ institutional clients.
Why Commercial Kitchens Need ESP Purification
Cooking Fumes Are a Serious Health & Safety Risk
Kitchen exhaust contains grease particles, PM2.5, VOCs, and carcinogenic compounds that cause respiratory issues, lung damage, and weakened immunity for kitchen staff. Grease accumulation in ductwork is also the #1 cause of commercial kitchen fires.
Regulatory Compliance Is Mandatory
Cities worldwide enforce strict emission standards for commercial kitchens. Failure to comply results in fines, forced closures, and lawsuits from neighbors. An ESP system is the most effective way to meet EPA, EU, and local regulations.
- Eliminates 90–99% of grease, smoke, and oil mist
- Prevents grease buildup in ductwork — reduces fire risk
- Meets EPA, EU, and local emission regulations
- Protects kitchen staff from harmful fume exposure
- Eliminates neighbor complaints about smoke and odor
- Washable cells — no disposable filter waste
Advanced ESP Filtration Technology
Since 2004, Polygee has been engineering ESP solutions. 179 patents. BSE-listed (920802). 110,000+ m² production base.
SUS304 ESP Cells
Patented dual-zone plate-type electrostatic field. Maximized collection area. Washable & reusable for years.
Smart Power Supply
Self-developed SMPS with microsecond-level arc suppression, auto short-circuit recovery, and fault diagnostics.
Digital HMI Panel
Smart display showing real-time voltage, current, and electric field status. LED indicators for power, work, and fault.
Safety Interlock
Magnetic switches break circuit on door open. Double safety protection for maintenance personnel.
High Filtration Rate
Up to 98%+ grease and smoke removal. Captures particles as small as 0.01 microns across all three series.
IP55 Protection
Dust-proof & water-jet resistant enclosure. Leak-proof bottom design. Suitable for indoor and outdoor installation.
Modular Design
Stack units from 4,000 to 60,000+ m³/h. Standard flange connections. Add modules as kitchen grows.
Low Noise & Low Power
Optimized body design for quiet operation. Stainless steel core for energy efficiency and extended lifespan.
Principle of Electrostatic Purification
Each Polygee series uses a multi-stage purification process. Select a series below to view its purification principle.
Airflow Distribution
Washable mesh pre-filter traps large particles and evenly distributes airflow.
→Primary Ionization
High-voltage ionization charges grease and smoke particles.
→Plate Collection
Dual-zone plate-type collector captures charged particles.
→Secondary Collection
Additional collector stage for ultra-high 98%+ efficiency.
→UV Sterilization
UV-C module decomposes VOCs and eliminates odors.
Why Dual-Zone Plate-Type ESP as Primary Filtration
🔋 Prolonged Wash Cycle & Longer Life
The plate-type design with wider electrode spacing and SUS304 composition enables higher voltage tolerance, heavier pollutant accumulation, and more rigorous cleaning cycles — extending operational life significantly.
🎯 Higher Collection Efficiency
The dual-zone plate-type structure provides maximized collection surface area with uniform electrode spacing, ensuring higher electric field intensity and superior grease capture efficiency — even under extreme cooking loads.
⚡ Dual-Zone Ionization & Collection
Energized by self-developed high-voltage power supply, the dual-zone plate-type ESP cells deliver highly-efficient primary removal of oil, grease, and smoke particles from kitchen exhaust air.
🛡 Easy Maintenance & Cleaning
Collector cells slide out for cleaning. Soak in alkaline degreaser or run through a commercial dishwasher. Fully washable and reusable — zero disposable filter cost.
Smart Panel & Intelligent Power Supply
Self-developed core components for stable, intelligent, and efficient ESP operation.
Intelligent HMI Display
Intelligent High-Voltage Power
Model Specifications
Select the right model based on your kitchen airflow requirements. Custom configurations available via OEM/ODM.
| Model | Airflow (m³/h) | Power (W) | Dimensions L×W×H (mm) | Flange A×B (mm) | Weight (kg) | UV Power (W) | UV Lamps |
|---|---|---|---|---|---|---|---|
| LK4K | 4,000 | 280 | 608×988×725 | 350×474 | 75 | 80 | 2 |
| LK6K | 6,000 | 432 | 798×988×725 | 540×474 | 90 | 80 | 2 |
| LK8K | 8,000 | 560 | 1064×988×725 | 806×474 | 118 | 160 | 4 |
| LK10K | 10,000 | 720 | 1254×988×725 | 996×474 | 132 | 160 | 4 |
| LK12K | 12,000 | 864 | 1444×988×725 | 1186×474 | 150 | 160 | 4 |
| LK15K | 15,000 | 1,080 | 1805×988×725 | 1547×474 | 182 | 240 | 6 |
| LK18K | 18,000 | 1,176 | 1946×988×725 | 1688×474 | 194 | 240 | 6 |
| LK20K | 20,000 | 1,296 | 2090×988×725 | 1832×474 | 208 | 240 | 6 |
| LK24K | 24,000 | 1,728 | 1444×988×1309 | 1186×1058 | 288 | 320 | 8 |
| LK30K | 30,000 | 2,160 | 1805×988×1309 | 1547×1058 | 354 | 480 | 12 |
| LK36K | 36,000 | 2,352 | 1946×988×1309 | 1688×1058 | 378 | 480 | 12 |
| LK40K | 40,000 | 2,592 | 2090×988×1309 | 1832×1058 | 402 | 480 | 12 |
| LK45K | 45,000 | 3,240 | 1805×988×1893 | 1547×1642 | 524 | 720 | 18 |
| LK54K | 54,000 | 3,528 | 1946×988×1893 | 1688×1642 | 560 | 720 | 18 |
| LK60K | 60,000 | 3,888 | 2090×988×1893 | 1832×1642 | 595 | 720 | 18 |
Input: 220V/50Hz • Pressure drop: <150 Pa • Purification: ≥98%
Request Custom Configuration →| Model | Airflow (m³/h) | Power (W) | Dimensions L×W×H (mm) | Flange A×B (mm) | Weight (kg) | UV Power (W) | UV Lamps |
|---|---|---|---|---|---|---|---|
| LK40D | 4,000 | 82 | 862×614×675 | 634×474 | 61 | 80 | 2 |
| LK60D | 6,000 | 114 | 673×968×675 | 445×474 | 80 | 80 | 2 |
| LK80D | 8,000 | 152 | 815×968×675 | 587×474 | 96 | 80 | 2 |
| LK100D | 10,000 | 202 | 1128×968×675 | 900×474 | 128 | 160 | 4 |
| LK120D | 12,000 | 228 | 1224×968×675 | 996×474 | 138 | 160 | 4 |
| LK160DWS | 16,000 | 304 | 1508×968×675 | 1280×474 | 168 | 160 | 4 |
| LK160DLS | 16,000 | 304 | 815×968×1245 | 587×1044 | 183 | 160 | 4 |
| LK200D | 20,000 | 404 | 1128×968×1245 | 900×1044 | 244 | 320 | 8 |
| LK240D | 24,000 | 456 | 1224×968×1245 | 996×1044 | 262 | 320 | 8 |
| LK280D | 28,000 | 504 | 1318×968×1245 | 1090×1044 | 280 | 320 | 8 |
| LK320D | 32,000 | 608 | 1508×968×1245 | 1280×1044 | 320 | 320 | 8 |
| LK400D | 40,000 | 756 | 1318×968×1815 | 1090×1614 | 410 | 480 | 12 |
| LK480D | 48,000 | 912 | 1508×968×1815 | 1280×1614 | 468 | 480 | 12 |
Input: 220V/50Hz • Pressure drop: ≤150 Pa (≤50 Pa for small models) • Purification: ≥95%
Request Custom Configuration →| Model | Airflow (m³/h) | Power (W) | Dimensions L×W×H (mm) | Flange A×B (mm) | Weight (kg) | UV Power (W) | UV Lamps |
|---|---|---|---|---|---|---|---|
| LK40A | 4,000 | 140 | 578×748×675 | 350×474 | 52 | 80 | 2 |
| LK60A | 6,000 | 196 | 720×748×675 | 492×474 | 59 | 80 | 2 |
| LK80A | 8,000 | 256 | 862×748×675 | 634×474 | 71 | 80 | 2 |
| LK100A | 10,000 | 320 | 1128×748×675 | 900×474 | 91 | 160 | 4 |
| LK120A | 12,000 | 392 | 1318×748×675 | 1090×474 | 104 | 160 | 4 |
| LK160AWS | 16,000 | 512 | 1602×748×675 | 1374×474 | 123 | 160 | 4 |
| LK160ALS | 16,000 | 512 | 862×748×1245 | 634×1044 | 134 | 160 | 4 |
| LK200A | 20,000 | 640 | 1128×748×1245 | 900×1044 | 171 | 320 | 8 |
| LK240A | 24,000 | 784 | 1318×748×1245 | 1090×1044 | 195 | 320 | 8 |
| LK280A | 28,000 | 904 | 1460×748×1245 | 1232×1044 | 213 | 320 | 8 |
| LK320A | 32,000 | 1,024 | 1602×748×1245 | 1374×1044 | 252 | 320 | 8 |
| LK400A | 40,000 | 1,296 | 2058×748×1245 | 1830×1044 | 293 | 480 | 12 |
| LK480A | 48,000 | 1,536 | 1602×748×1815 | 1374×1614 | 359 | 480 | 12 |
Input: 220V/50Hz • Pressure drop: <150 Pa • Purification: ≥90%
Request Custom Configuration →Flexible Installation for Any Kitchen Environment
Polygee in-duct ESP units support multiple installation methods to fit your building requirements.
Indoor Ceiling-Mounted
Install ESP unit indoors at ceiling level. Exhaust ductwork routes to rooftop. Protects ESP from weather exposure. Easy maintenance access.
Rooftop Installation
Both ESP and ductwork on rooftop. Saves indoor space. IP55-rated enclosure handles outdoor weather conditions.
Outdoor Ground-Level
ESP placed at ground level outside the building. Connected to exhaust duct. Ideal when rooftop access is limited or not available.
- Minimum 850mm clear space in front of maintenance doors for ESP cell removal
- Standard flange connections — compatible with rectangular ductwork
- Panel-type card-slot design for easy installation, disassembly, and beautiful appearance
- Retrofit installation typically takes 4–8 hours during off-hours
- No hood replacement needed — ESP connects directly to existing duct system
- Input: 220V/50Hz for all standard models
- Support horizontal and vertical mounting orientations
Trusted by Industry Leaders
Polygee ESP systems serve major university canteens, global restaurant chains, and institutional cafeterias across 50+ countries.
Top University Canteens — China
Global Restaurant Chains
Public Institutions & Transit Hubs
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UV-C Photolysis Purifier
UV germicidal module for VOC decomposition and odor elimination. Pairs with ESP for complete purification.
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Activated Carbon Filter
Activated carbon adsorption module for residual odor and VOC removal. Optional add-on for sensitive environments.
Learn More →Request a Free Quote
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🏭 Manufacturer
Jiangsu Polygee Environmental Technology Co., Ltd.
BSE Listed: 920802 • 179 Patents
110,000+ m² Production Base, Zhangjiagang, China
📜 Certifications
CE • UL • RoHS • CCEP • CQC • ISO 9001 • ISO 14001 • ISO 45001
Frequently Asked Questions
Common questions about Polygee in-duct electrostatic precipitators for commercial kitchen exhaust.