Centrifugal Blower Fans-Single Inlet

Forward centrifugal fan Blower from LONGWELL

Advantages of forward centrifugal blowers:

All of our Forward curved centrifugal blower benefits at a glance:

– Air flow up to 5,000 m³/h

– Robust sheet steel

– Compact design thanks to external rotor motor

– Consistent series for every application

– 100% speed control through analog or serial interface

– Plug & play

Power input Ranges: from 26W -2200W

Operating temperature: - 25℃ to +60 ℃

Forward Curved Centrifugal Blower - Single - Inlet Type:

- Singel inlet housing ( Galvanized Metal Sheet )

- Singel inlet Impeller ( Galvanized Metal )

Forward Curved Blower Fan- Dual- Inlet Type:

Forward Curved Centrifugal Fan Blower - Dual- Inlet plastic material Type:

Main Applications:

A highly developed plug & play system allows the fans to be ready for use quickly. This saves time and money:

– Perfectly attuned components

– Pre-wired and pre-programmed

– No separate frequency converter and motor protection switch required

– Includes conformity declaration for motor and electronics

Applications Ranges: EC fan array / Electronic cabinet cooling/ Clean room modules/ Heat exchangers/ Air filtration systems / Military HRAC / Pharmaceutical / Biological control systems / Computer room air conditioning (CRAC) /systems /Air-handling units

Related Products:

Company Introduction

R& D Capacity: More than 20 professional R&D team members, all with more than 10 years of working experiences.

OEM Capacity: Based on our professional Mould factory of centrifugal fans, Longwell support OEM, ODM Solutions for EC backward centrifugal fans, EC plug fans which can be customized according to customer's requirements;

Quality Control for EC fan series: 100% Stritly control the quality of Fans and have passed CE, RoHS, ISO9001, IS0 14001, BSCI, UL, ETL Certifications.

LONGWELL ECM Technology for EC backward centrifugal fans is giving more energy saving to our world. The advantages are:

■ Our ECM motorized fans' effiency are 30%-60% higher than the traditional motors;

■ The build-in PCBA achieved stepless speed control, and communication with customers products;

■ Longer life span up to 40, 000hours ( for EC Fan Motor );

■ IP44, 45, 55, IP68, can be customized;

■ Sine wave, three phase eliminate electromagnetic-acoustic and lots of other protection functions like soft start, overload, motor block … .

Benefits of EC Fans from Longwell:

■ High efficiency

■ Long life span

■ Compact design which can replace fans IEHL-ABEGG fan directly .

Approvals: UL, ETL, CCC, CE

With over than 15 years manufacturing experieces in HVAC Fans & Blowers, longwell developes many strategic partners such as:

LONGWELL expects all our customers have their 100% satisfied solution in fans and motors .

FAQ

Q1. Which kind of Impellers do you use in this EC Blower fans ?

Reply:

Motor impeller statically and dynamically balanced on two planes to balancing grade G 6.3 in accordance with DIN ISO 1940.

High-performance impeller with High static efficiency

– Aerodynamically optimized blade channel

– Integrated radial diffusor

Minimal noise emission

– Diagonal trailing edge for optimized flow control

– Integrated radial diffusor

Minimal vibration

– Dynamic balancing of the impeller-rotor unit minimizes

induced structure-borne noise and reduces the bearing load

Robust design

– Suitable for constantly high peripheral speeds

– Corrosion-resistant aluminum

Q2.What's the protection does these Motors have ?

Electronics Protection from EC Motor System

High static efficiency

– No adjustment effort as motor, electronics, and control from a single source

– Central plug-in area for power and control inputs

– Compact design through optimized cooling of power electronics

– No parameter setting required during start-up

– Safe separation between terminal area and electronics

Flexible open loop control

– Smoothly adjustable speed

– Control via 0–10 V / PWM and MODBUS-RTU

– Error message output

– Interface with SELV

Safe operation

– Locked rotor and thermal overload protection

– Disconnection in case of malfunction

-Tach output;

-Reverse Polatity

- Soft Start

Universally deployable

– For use with 50- and 60-Hz grids

– Extended voltage input 1 ~ 200 V – 277 V. 3 ~ 380v - 400V

Q3. What's the difference between Longwell ec blower External Rotor Motor fan and standard internal rotor motor ?

Reply:

Rotating parts are fitted to one component and dynamically balanced as such. Total weight is evenly distributed to both bearings, very good cooling !

Q4. Does Longwell provide any speed control options for the forward blower FANS ?

Reply:

Yes, Longwell can provide some speed regulator solutions according customer's requirements, such as:

The RM-ECi controller is for use with the full range of EC fans. Powered by the 10VDC output from the motor, it provides infinitely variable, manual speed control between 0% and 100%

○ Can control multiple fans running at the same speed

○ Stepless control knob for infinitely variable speed setting

○ Cable entries 4 x M16 or M20

○ 4mm mounting holes

Q5. Are there any other AC DC EC centrifugal fans options or solutions for selection ?

Reply:

Yes, sure.

LONGWELL is a professional manufacturer of fans, blowers, motors and components for heating, venlation, air conditioner and refrigeration applications, specialist in centrifugal fans, axial fans, AC /BLDC cross flow fans, single / double forward curved fan BLOWERS, AC / BLDC/ECM motors as well as industrial fan blowers, inline duct fans, Poultry ventilation fans ( AC / DC /EC ), etc.

LONGWELL has large products range which could offer customers a more perfectly products solutions by not only producing fans and motors, but also do the perfectly motor and fans matching, and offering good quality and very competitive prices by large scale productions.

Please refer the below production summary or you can contact us directly at:

Email: bruce@zjlongwell.com Devin@zjlongwell.com

Direct- Phone: 0086 18358274663

We are looking forward to develop a good relationship with you.

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