| Customization: | Available |
|---|---|
| Material: | Iron |
| Usage: | for Manufacture |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
250mm AC 230V External Rotor Motor Evaporator Fans for Cooing Industrial
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.
The external rotor axial flow fan has the characteristics of compact structure, convenient installation, reliable operation, low noise, energy saving and high efficiency. The products are widely used in hotels, restaurants, industrial and mining enterprises, office buildings, theaters and other building facilities, as ancillary equipment for freezers and cold storage or for ventilation and heat dissipation. (For example, it is matched with refrigeration equipment or facilities such as supermarket freezers, ice machines, air coolers, chillers, condensing units, etc., and used with dehumidifiers, evaporators, side wall fans, fire fans, central air-conditioning fans and other equipment).
The outer rotor axial flow fan is composed of fan blades, outer rotor motor, net cover, lead wire and other parts. The structure of the fan is calculated by structural finite element, and the strength check, modal analysis, harmonic response analysis and other methods are carried out to ensure that our products have the advantages of stable and reliable structure, high safety factor, small vibration, and strong anti-interference ability! According to customer requirements, Thermal protectors, junction boxes and other components can be installed, or different installation methods such as cylinder type and box type can be selected. The blades are designed according to the principles of aerodynamics, acoustic principles and acoustic performance requirements. They are twisted according to certain rules from the tip to the root. The material is made of high-quality steel or plastic. After dynamic balance verification, it has good starting performance, stable operation and low noise.
| Model | Rated Voltage (V) | Frequency (Hz) |
Current (A) |
Input Power (W) | Highest Speed (r/min) | Volume (m³) |
Pressure (Pa) |
Noise db (A) | Capacitor (μF) |
| YWF2D-200 | 380 | 50 | 0.25 | 80 | 2700 | 1080 | 122 | 57 | - |
| YWF2E-200 | 220 | 50 | 0.30 | 70 | 2650 | 1050 | 120 | 56 | 2.5 |
| YWF4D-200 | 380 | 50 | 0.20 | 50 | 1400 | 500 | 60 | 50 | - |
| YWF4E-200 | 380 | 50 | 0.20 | 40 | 1400 | 510 | 55 | 50 | 1.5 |
| YWF2D-250 | 380 | 50 | 0.25 | 105 | 2650 | 1850 | 192 | 65 | - |
| YWF2E-250 | 220 | 50 | 0.53 | 115 | 2550 | 1800 | 190 | 65 | 4 |
| YWF4D-250 | 380 | 50 | 0.23 | 55 | 1450 | 1250 | 60 | 55 | - |
| YWF4E-250 | 220 | 50 | 0.30 | 60 | 1440 | 1230 | 60 | 55 | 2.5 |
| YWF2D-300 | 380 | 50 | 0.28 | 140 | 2480 | 3250 | 205 | 66 | - |
| YWF2E-300 | 220 | 50 | 0.80 | 180 | 2550 | 3300 | 210 | 66 | 6 |
| YWF4D-300 | 380 | 50 | 0.25 | 70 | 1400 | 1950 | 70 | 60 | - |
| YWF4E-300 | 220 | 50 | 0.35 | 75 | 1400 | 1950 | 70 | 60 | 3 |
| YWF2D-350 | 380 | 50 | 0.72 | 400 | 2400 | 4850 | 225 | 73 | - |
| YWF2E-350 | 220 | 50 | 1.80 | 400 | 2350 | 4750 | 223 | 72 | 10 |
| YWF4D-350 | 380 | 50 | 0.45 | 130 | 1400 | 3270 | 93 | 64 | - |
| YWF4E-350 | 220 | 50 | 0.55 | 125 | 1400 | 3270 | 93 | 64 | 4 |
| YWF2D-400 | 380 | 50 | 1.05 | 580 | 2350 | 6480 | 240 | 74 | - |
| YWF2E-400 | 220 | 50 | 2.40 | 510 | 2280 | 6100 | 240 | 80 | 12 |
| YWF4D-400 | 380 | 50 | 0.60 | 180 | 1400 | 4800 | 125 | 68 | - |
| YWF4E-400 | 220 | 50 | 0.90 | 190 | 1400 | 4800 | 125 | 68 | 6 |
| YWF40D-450 | 380 | 50 | 0.53 | 210 | 1390 | 5410 | 155 | 70 | - |
| YWF4E-450 | 220 | 50 | 1.25 | 280 | 1380 | 5380 | 150 | 69 | 10 |
| YWF6D-450 | 380 | 50 | 0.42 | 155 | 950 | 4680 | 100 | 60 | - |
| YWF6E-450 | 220 | 50 | 0.85 | 165 | 1390 | 4650 | 100 | 60 | 8 |
| YWF4D-500 | 380 | 50 | 0.62 | 280 | 1390 | 8850 | 192 | 72 | - |
| YWF4E-500 | 220 | 50 | 1.75 | 370 | 1390 | 8850 | 190 | 72 | 12 |
| YWF6D-500 | 380 | 50 | 0.90 | 210 | 950 | 5800 | 125 | 65 | - |
| YWF6E-500 | 220 | 50 | 0.90 | 230 | 950 | 5800 | 125 | 65 | 8 |
| YWF4D-550 | 380 | 50 | 0.90 | 450 | 1350 | 10800 | 215 | 74 | - |
| YWF4E-550 | 220 | 50 | 2.50 | 500 | 1350 | 10800 | 215 | 74 | 12 |
| YWF6D-550 | 380 | 50 | 1.00 | 210 | 950 | 6500 | 135 | 68 | - |
| YWF6E-550 | 220 | 50 | 1.10 | 300 | 950 | 6500 | 135 | 68 | 8 |
| YWF4D-600 | 380 | 50 | 1.55 | 680 | 1380 | 13000 | 230 | 75 | - |
| YWF4E-600 | 220 | 50 | 3.25 | 750 | 1380 | 13000 | 230 | 75 | 15 |
| YWF6D-600 | 380 | 50 | 1.20 | 360 | 930 | 9600 | 150 | 70 | - |
| YWF6E-600 | 220 | 50 | 1.40 | 450 | 900 | 9500 | 150 | 70 | 10 |
| Model | A | B | C | D | E | K | F | G | a | b |
| 200 | 220 | 270 | 220 | 270 | 210 | 110 | 148 | 12 | 53 | |
| 250 | 270 | 320 | 270 | 320 | 260 | 270 | 120 | 148 | 12 | 53 |
| 300 | 320 | 370 | 320 | 370 | 310 | 320 | 125 | 158 | 12 | 53 |
| 350 | 370 | 420 | 370 | 420 | 365 | 375 | 130 | 168 | 12 | 41 |
| 400 | 420 | 470 | 420 | 470 | 415 | 425 | 140 | 181 | 12 | 57 |
| 500 | 520 | 570 | 520 | 570 | 515 | 525 | 155 | 183 | 12 | 57 |
| 600 | 610 | 670 | 610 | 670 | 615 | 625 | 209 | 218 | 12 | 57 |
Our service:
Marketing Service
100% tested CE certified blowers.Professional advice for model selection and further market development.
Pre-sales service:
•We are a sales team, with all technical support from engineer team.
•We value every inquiry sent to us, ensure quick competitive offer within 24 hours.
•We cooperate with customer to design and develop the new products. Provide all necessary document.
After-sales service:
•We respect your feed back after receive the fan.
•We provide 1years warranty after receipt of fan..
•We promise all spare parts available in lifetime use.
•We loge your complain within 24 hours.
1. SAFETY REGULATIONS AND NOTES
Please read these operating instructions carefully before starting to work with the device. Observe the following warnings to prevent malfunctions or physical damage to both property and people. These operating instructions are to be regarded as part of this device. If the device is sold or transferred, the operating instructions must
accompany it. These operating instructions may be duplicated and forwarded for
information about potential dangers and their prevention.
1.1 Levels of hazard warnings
These operating instructions use the following hazard levels to indicate potentially hazardous situations and important safety regulations:
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Compliance with the measures is mandatory.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Exercise extreme caution while working.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damage of property.
NOTE
A potentially harmful situation can occur and, if not avoided, can lead to property damage.
1.2 Staff qualification
The device may only be transported, unpacked, installed, operated, maintained and otherwise used by abled, qualified, trained and authorised technical staff. Only authorised specialists are permitted to install the device, to carry out a test run and to perform work on the electrical installation.
1.3 Basic safety rules
Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device. Observe the following when working on the unit: Do not make any modifications, additions or conversions to the device without the approval.
1.4 Electrical voltage
Check the electrical equipment of the device at regular intervals, refer to Safety test. Replace loose connections and defective cables immediately
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.
| 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. |
){kind=link}