250mm Square Type Axial Fan

• Customization: Available
• Material: Iron
• Usage: for Manufacture
• Model NO.: YWF Series
• Flow Direction: Axial Flow
• Pressure: Low Pressure
• Certification: RoHS, CE
• Color: Black
• Model No.: Ywf4e-250
• Transport Package: Carton
• Specification: Square Louver type
• Trademark: JIAYI
• Origin: Wenling, China
• HS Code: 8414599050
• Production Capacity: 5000pieces/Month

Product Description

Product Description

250mm Square Type Axial Fan
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.

Product Parameters

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

 

Installation dimensions

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

 

Detailed Photos

 

Our Advantages

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. 

Company Profile

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.
 

FAQ

 

Q1: What's your warranty?

A1: we have one year warranty for different item.

Q2: Could I put my own logo on it?

A2: Sure, we can make your logo after you give us your authorization

Q3: If I have my ideas, do you have persons to design according to my concept?

A3: Certainly, our technology team is willing to do it for you.

Q4: What's your payment term?

A4: Paypal, Western Union, TT and LC at sight.

Q5: What's your shipping ways?

A5: For sample, we will choose express(DHL, UPS, TNT or FEDEX). For bulk goods, it will depends on you, by air or by sea via Ningbo or Shanghai port.

Q6: can I get a sample to check your quality and how long i can get samples?

A6: yes, welcome and sample will be finished as early as we can.