Audited Supplier
Unlike conventional motors whose rotors are on the inside of a wound stator, external rotor motors have their rotor on the outside. This presents unique advantages to the fan manufacturer and user as detailed below:
An extremely compact, therefore space saving unit, is produced by utilising the external rotor component as the hub of a fan impeller.
Precision balancing is assured as the hub and impeller becomes one integrated unit of short axial length.
Heat is very effectively removed in the airstream, assisted by the fan impeller that acts as a rotating heat sink of appreciable surface area.
Speed control is then possible by low cost voltage variation because the extra heat generated in the rotor under speed control is lost directly into the airstream.
Air filters can be 'saved' when clean but 'air flow compensated' when dirty by the tendency of centrifugal fans to speed-up as flow resistance increases. The increase in speed is more pronounced when using external rotor motors.
In general, the external rotor principle leads to small efficient motors, ideal for saving space within equipment.
EXTERNAL ROTOR FANS
Fans housing stator and windings inside the rotor are compact, well-balanced, with widely adjustable rotation speed and good motor cooling. Built with insulation system (Class F) and integrated thermal protection. Axial fans are characterised by a series of unique properties of being quiet, robust and thermal-shielding. Useful in all those situations in a system with low pressure drop (therefore not very high resistance), the axial fans guarantee a large airflow rate.
YWF series external rotor fan is a new product developed by our company after repeated research and trial production by combining the advantages of technology and talents from many domestic universities. Compared with the conventional axial flow fan, the fan has the advantages of high efficiency, low noise, low vibration, compact structure, beautiful appearance, and the impeller is directly fixed on the outer circle, which makes the axial dimension shorter. A breakthrough has reached the international advanced level.
| Model | Rated voltage (V) | Frenquency ( Hz) | Current (A) | Input power (W) | Highest speed(r/min) | Volume (m3/h) | Pressure (Pa) | Noise db (A) |
| YWF4D-200 | 380 | 50 | 0.2 | 50 | 1400 | 500 | 60 | 50 |
Zhejiang Jiayi Fan Co., Ltd. was established in 2003. It is a modern private enterprise focusing on the research, development, production and sales of ventilation equipment. The company is headquartered in Daxi Town, Wenling City, Zhejiang Province, which is the "Hometown of Pumps in China", and has branches across the country; the production base is located in the East New District of Wenling City.
The main products of the company: all kinds of portable, mobile, oil-proof and moisture-proof axial flow fan series; medium, low and high pressure centrifugal fan series; boiler type draft fan series; mixed flow, diagonal flow fan series; industrial exhaust fan series; blower series and Y series; air compressor series and three-phase asynchronous motor, etc.; and can design and produce various non-standard and special exhaust equipment and special fans according to customer requirements.
Sincerely thank domestic and foreign customers for their long-term trust and love for A and B fans, and welcome you to visit and guide us at any time. With your support, we are more confident to manufacture ventilation equipment products that meet the needs of social development. Let us work together, help each other, coexist and prosper, and create unlimited business opportunities.
| Q1: What's the terms of trade? |
| A1: FOB,CFR,CIF or EXW are all acceptable. |
| Q2: What's the terms of payment? |
| A2: T/T,L/C at sight or cash. |
| Q3: How long is your delivery time? |
| A3: Generally it is 5-10 days if the goods are in stock or it is 20-30 days if the goods are not in stock, it is according to quantity. |
| Q4: What is the advantage about your company? |
| A4: Our company has professional team and professional production line. |
| Q5: If we travel to China to checking your facility, are you welcome? |
| A5: Of course, We will provide the whole accompany upon your arrivial. Warm Welcome! |
| Q6: How Many Years of your company working in this industry? |
| A6: We have over 20-year experience in this field. |
