TGB500 Ⅱ 7.5kW-6P Direct Driven Centrifugal Fans with Forward Curved Multi-blades

The TGB Series centrifugal fan is kind of air-conditioning centrifugal cooling fan. The centrifugal fan impeller is driven by three phases external motor. It was developed by using high technology and with low noise and compact structure. It was specially designed for the air-conditioning. The flow rate and total pressure range of this series fan are from 1000m /h to 20000m /h and 200Pa to 850Pa. This kind of centrifugal fan is the ideal equipment for the air-conditioning and other kind of fan system.

Nomenclature of Centrifugal Fan

Features of Centrifuge Fan Blower

1. Rotation Direction

TGB series centrifugal fans have two direction of rotations, left-hand  rotation (LG) and right-hand rotation (RD); Viewing from drive  side, if the centrifugal fan impeller rotates clockwise, it is left hand (LG) rotation.  If the centrifugal fan wheel rotates counter clockwise, it is right-hand (RD).

2. Discharge Direction of Centrifugal Fan

According to below Fig, TGB Series centrifugal fans can be made in four  air-outlet directions:0°, 90°, 180°, and 270°.

Centrifuggal Fan Design

TGB series centrifugal blower fans consist of housing, impeller, baseplate(frame),  motor, shaft sleeve and air outlet flange.

1. Centrifugal Fan Housing

The centrifugal fan housing is made of hot galvanized steel sheet. The side  plates include inlets cones that are designed with the best  aerodynamics for inlet condition. The scroll is fixed to the side  plates by spot welding. On the side of the scroll, there is a  series of holes drilled in advance for riveting nuts to carry out  installation according to air outlet direction needed by the  customer.

2. Centrifugal Fan Impeller

Forward curved centrifugal fan impeller is constructed of high-grade hot galvanized steel sheet with the advanced aerodynamics profile to achieve the highest efficiency and the lowest noise level. The centrifugal fan blade is fixed on the center plate and on the end ring with riveting grip pres. The centrifugal fan impellers are constructed with maximum strength that endures the continuous operation with maximum power. All centrifugal fan blades are balanced to the National Standard. Tingertech's internal standard is higher for wheel balancing.

3. Centrifugal Fan Frame

TGB Series centrifugal fan baseplate is made of high quality hot galvanizing steel sheet, and the unique process of  strengthening ensures the sufficient strength. The direction of baseplate installation can be carried out according to the different requirements of customers, Over TGB 315 centrifugal fan frame is made of angle steel and flat steel. On four sides of the frame, there are holes drilled for installation to meet customers'  requirements in different installation directions of centrifugal fan.

4. Centrifugal Fan Motor

The centrifugal fan motor used in TGB series centrifugal fans are low noise three phases asynchronous motors with external rotors. The centrifugal fan impeller is installed on the external casing of the motor. The centrifugal fan motor rotation speed can be changed by using provided with three-phase voltage regular, silicon controlled voltage regulator, frequency converter and etc. to satisfy the changeable load in the system.

5. Centrifugal Fan Flange 

The flange is made of galvanized steel. The connections of the flange components to the scroll are made using a non-welding process. This maintains a good flange appearance while also providing sufficient strength and rigidity. The dimensions and type of flange are shown in below Fig.

Note： the size unit in the form and overall size are mm.

Instructions of Centrifugal Fan Blower

1) The rated motor power as calculated herein might not be sufficient to drive the centrifugal fan with an unrestricted discharge flow.  Operating the centrifugal fan with an unrestricted discharge outlet will result in flow rate that exceeds the specified fan capabilities. Such operation will quickly burn the motor and damage the centrifugal fan. Great care must be taken in operating the centrifugal fan to make sure that  the maximum rated flows, as provided on the performance charts below (also shown in our centrifugal fan catalogue) are not exceeded. 

2) The centrifugal fan performance curves is tested under the  motor rated speed, we can meet the actual requirement of the user by changing the motor speed. 

3) Special care should be taken during transportation, load and  unload. The centrifugal fan is limited for use in areas where air substances are non-corrosive, non-toxics and non-erosive. 

4) Following the installation, the centrifugal fan impeller should be turned by hand or with the use of a wrench to make sure that it turns freely without colliding with other parts of the centrifugal fan. Once all this is done, the centrifugal fan can be commissioned normally. 

5) A flexible connector should be used between the centrifugal fan outlet  flange and its mating ductwork. The flex connector should not be over-stretched. 

6) The inside of the scroll and casing need to be checked to make sure that there are no foreign objects inside the centrifugal fan housing,  such as tools or loose parts. 

7) The rotational directions of the centrifugal fan motor and centrifugal fan impeller should be checked to ensure that they are in compliance with the specification and purchase orders. 

8) During ordering it is necessary to state the centrifugal fan types,  motor type, centrifugal fan airflow, centrifugal fan pressure and other parameters.

Centrifuge Fan Curves

Centrifugal Fan Drawing

FAQ:

1. Q: How we choose the right centrifugal fan as we need?

A: For your similar, please share us:

The volume at certain static pressure.

2. Q: Can you provide us sample of centrifuge blower duct fan, is it free or need to pay?

A: Free sample is always available, freight cost on customer's side.

3. Q: What's your payment term?

A: 30% deposit and 70% balance before shipping by LC,TT on FOB term.

4. Q: What kind of product you can provide?

A: As a professional factory of hvac motor and centrifugal fan (housing fan), many different motor models and centrifugal duct fans are on our list: fan coil unit motor for central air conditioner, motor for split, cabinet, window, ceiling air conditioner, cooler motor, blower motor, fan motor, heat pump motor, universal fan motor, indoor fan motor, outdoor fan motor, condenser fan motor, PG motor, and other HVAC/R MOTOR; BLDC motor, EC motor, stepper motor, single and three phase motor; AC Centrifugal fan, EC centrifugal blower as well as other HVAC parts, which are on our service to help cusotmer purchase.

5. Q: Is there a MOQ for your blower fan?

A: Yes. The MOQ is between 100-500pcs for different models after sample approval. And it's also okay for us to accept smaller lots for the initial order.

6. Q: Could you send me a price list?

A: Most of our centrifugal housing fan are not standard, they are customized based on different requirements like voltage, power and shaft dia and length etc. Thus, it's really difficult for us to provide a price list. If you could share your detailed requirements and quantity, we'll be sure to offer a very competitive price.