The company introduces foreign advanced technology and management system, focusing on R&D innovation and quality improvement of Backward Centrifugal Fan For Hutch, Backward Inclined Fan, axial fan for air?cleaner. Committed to providing high-precision equipment and professional technical services with excellent performance for the Backward Centrifugal Fan For Hutch, Backward Inclined Fan, axial fan for air?cleaner industry. We will adopt professional and industrialized operation to develop a comprehensive logistics system. We have a strong marketing service network and target the international market. Our products have been sold to more than ten countries and regions, and have won wide recognition from customers at home and abroad. We have a perfect production process and quality management system, always adhering to the purpose of quality as life, treating customers first.
Production description
Single Inlet Forward Centrifugal fans and blowers are compact units that can be used to either pressurize or evacuate in air moving applications. The impellers are permanently mounted to the external rotors for ease of installation and maintenance-free operation. These units may be mounted in any orientation to provide maximum airflow in minimum areas.
(1)YWF External Rotor Centrifugal Fans are divided into forward centrifugal fan and backward centrifugal fan according to curved blades, which have compact structure, convenient installation, credible running, little noise, energy saving and high efficiency.
(2) Several speed ranks, adapt to both frequency conversion and voltage transformation speed changing active. Our products are widely used in duct fans, roof ventilator, air purifying equipment, air conditioning, and household appliances, etc.
(3)The voltage of the single phase motor is 220V, 50/60 Hz, and the voltage of three phase motors is 380V, 50/60Hz. We can also supply other fan motors with different voltages and frequencies according to clients' requirement.
(4)The safety grade of this series is IP54, and the insulation classes are class B and class F.
(5) The applicable ambient temperature of the fan motors used in condenser is from -30℃~60℃.
(6)The average service life of motors is over 30,000 hours.
(8) Our products have gotten UL approval, CE approval and CCC approval.
(9) Product Features
① —Material: Housing: galvanized sheet steel
Impeller: galvanized sheet steel
Rotor: Coated in black plastic
② Bearings: Maintenance- free ball bearings
③ Direction of rotation: Clockwise, seen on rotor
④All models have reached UL approval, CE approval and CCC approval
⑤The type of protection is IP54. All models are fitted with an internal Thermal Overload Protection Device
⑥ Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request (Any)
⑦Insulation class is class B or class F
Performance parameters
| Model | V | Frequency | Current | Input Power | Speed | PA | Max Air Flow | Capacitor | Noise | Curve |
YWFF4E280 | 230 | 50 | 5.4 | 1.2 | 1400 | 50 | 3500 | 30 | 76 | ① |
YWFF4D280 | 230△/400Y | 50 | 4.3/2.5 | 1.35 | 1400 | 0 | 3700 | / | 76 | ② |
YWFF6E280 | 230 | 50 | 2 | 0.46 | 900 | 0 | 2400 | 8 | 66 | ③ |
YWFF6D280 | 230△/400Y | 50 | 1.5/0.9 | 0.47 | 900 | 0 | 2400 | / | 66 | ③ |
Product feature and application
(1) Product feature:
●Compact structure
●Specialized design
●Refined process control
●Simple Installation
●High efficiency and low noise
●Long service life
(2)Application
●Condenser
●Evaporator
●Pipe fan
●Roof ventilator
●Heat dissipation and ventilation
Illustration of Models
YWF—F—2—E—200
① ② ③ ④ ⑤
①YWF: External Rotor Centrifugal Fan
②F: Forward
B: Backward
D: Double Inlet
③(2,4,6):Pole of Motor
④E: Single Phase Capacitor Operation
D: Three Phases Asynchronous Operation
⑤200: The Diameter of inlet
The Research and Development Center
The Research and development center of Ningbo Lionball Ventilator Co., Ltd is a national R&D center. It is appraised as High-tech Enterprises and Engineering Technology Center and has obtained many important prizes in the provincial projects.
Research and development center currently has 25 staff members. We introduced Germanic technology and employed a well-paid fan expert as our technical adviser. What is more, we have cooperated with international renowned enterprise EMERSON for about 5 years and will hand in hand with Carrier China.
Research and development center are facilitated with modern equipment and advanced laboratories: Air flow laboratory and life testing laboratory. We provide each member with professional inspection equipment for better research environment.
Over the past two years, owing to continuous effort of R&D team, we have successively obtained 15 certificates of Utility Model patent and 2 certificates of Invention Patents.
(1)Our Certificates of Utility Model Patent
(2)Certificates of Invention Patent
Adhering to high quality products and services, we will never lower our standards of the 12 24 48 Volt DC Truck Trailer HVAC Air Conditioning Ventilation Refrigeration System Backward Centrifugal Fan 220 to participate in low price competition. Our products are widely sold throughout China and exported to Europe, America and all over the world. For many years, we have cleaved to the concept of survival by quality and development by innovation, and strive to create products with novel designs and reliable quality.
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