EC Motor and EC Fan
PANKA FanPengke PJF Jet Fan (EC/AC)
The PJF series consists of PANKA jet fans designed for induced ventilation in tunnels and underground spaces. These fans drive surrounding air movement at high speeds, enabling longitudinal ventilation without ductwork, which significantly reduces civil engineering and installation costs. Available in two configurations: axial and centrifugal. The axial type offers a maximum airflow of 6000 m³/h, peak air velocity of 30 m/s, maximum static pressure efficiency of 40%, maximum total pressure efficiency of 60%, and an impeller diameter ranging from 225 mm to 630 mm. The centrifugal type delivers a maximum airflow of 8000 m³/h, peak air velocity of 33 m/s, a maximum overall efficiency of 70%, and an impeller diameter from 560 mm to 630 mm. Featuring adjustable design, the installation height and discharge direction can be customized to optimize layout based on tunnel cross-sections and traffic patterns. Impellers are available in aluminum alloy or composite materials. EC versions support stepless speed control and automatically adjust the number of operating units and speed based on CO/VI sensor readings. The product is CE certified and can be configured with fire safety certifications upon request.
Technical Specifications
- Maximum airflow for axial type6000 m³/h
- Maximum axial air velocity30 m/s
- Axial-flow maximum static pressure efficiency40%
- Axial fan maximum total pressure efficiency60%
- Maximum Airflow (Centrifugal)8000 m³/h
- Maximum air velocity (centrifugal)33m/s
- Total pressure efficiency of the centrifugal complete unitUp to 70%
- Axial impeller diameter225mm~630mm
- Impeller diameter560mm~630mm
- Impeller MaterialAluminum alloy, composite materials
- Structure TypeAdjustable design: customize height and angle freely.
- Drive TypeEC Electronic Commutation Motor / AC Motor
- Ingress Protection RatingIP4
- VerifyCE
Key Advantages
Adjustable design: freely customize installation height and airflow direction.
Achieve longitudinal forced ventilation without ductwork, reducing civil construction costs.
Axial and centrifugal designs covering various tunnel cross-sections.
Centrifugal unit total pressure efficiency reaches a maximum of 70%.
EC models support automatic speed adjustment and group control based on CO/VI detection values.
The impeller is available in lightweight aluminum alloy or composite materials.
Use Cases
Induced Ventilation for Highway and Railway Tunnels
Underground Parking Ventilation
Underground Space and Utility Tunnel Ventilation
Partial induced ventilation for factory buildings
Pengke PJF Jet Fan Selection Parameters Table
← Swipe left or right to view full parameters; first column is fixed
| Parameter | Numeric | Description |
|---|---|---|
| Max Airflow | 6000 m³/h | Axial Series Upper Limit |
| Maximum Airflow | 30 m/s | Jet exit velocity |
| Maximum Static Pressure Efficiency | 40% | Sample Label Value |
| Maximum total pressure efficiency | 60% | Sample Label Value |
| Impeller Diameter | 225mm~630mm | Axial Impeller Coverage Range |
| Impeller Material | Aluminum alloy, composite materials | Lightweight and easy to hoist |
Select jet fans based on induced airflow, outlet velocity, and thrust—unlike duct fans, which are selected using airflow-pressure curves. The table's performance tiers represent reference ranges derived from equal ratios of maximum series performance. Actual selection must be calculated according to tunnel or underground space cross-sections, traffic flow organization, and the manufacturer's thrust curve.
Download
Pengke PJF Jet Fan (EC/AC)Product Catalog (PDF) – Download for full technical specs, installation dimensions, and selection tables.
Pengke PJF Jet Fan (EC/AC)Product Catalog
PDF Document · Free Public Download
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