The LKPH series backward dual inlet belt driven centrifugal fan is a specialized fan for air conditioning systems developed by our company. It adopts a high-efficiency backward impeller, and the motor is located outside the volute, driving the fan impeller to rotate through belt transmission. Choosing an appropriate transmission ratio can achieve a good match between the rated operating point of the fan and the required operating conditions, improve the overall efficiency of the unit, and achieve the goal of energy conservation and environmental protection.

The fluid model of this series of fans has been optimized using advanced CFD technology, which not only increases output pressure but also reduces noise and improves efficiency. It has the characteristics of energy saving and low noise, and is particularly suitable for supporting various air conditioning, purification, fresh air units, HVAC, refrigeration and other products. It has been widely used in hotels, restaurants, schools, hospitals, factories, mines, cinemas and other fields.

The various specifications of this series of fans have three different air outlet directions: 0 °, 90 °, and 180 °. Other special air outlet direction fan products can also be customized according to user needs, with flexible and convenient installation forms.

This series of fans can be customized with special matching motors of different voltages and frequencies according to the needs of users, which is very convenient for applications in different countries, regions, and fields.

This series of fans has the following significant advantages:

1. Belt transmission method, the rated flow rate and pressure of the fan can be freely selected;

2. Adopting optimized design of backward impeller, efficient, low-noise, environmentally friendly and energy-saving;

3. The exhaust direction of the fan can be customized for special processing, and the installation form is flexible and convenient.

Typical model: LKPH 630

Model meaning:

LKPH： Rear dual inlet belt driven centrifugal fan

630: nominal diameter of impeller (mm)

The installation angle of a fan includes two characteristics: rotation direction and outlet angle.

1) Rotation direction: The direction of rotation of the impeller can be divided into forward and reverse directions.

From the pulley side, if the impeller rotates clockwise, it is called a clockwise fan (abbreviated as CW in English); If the impeller rotates counterclockwise, it is called a reverse fan (CCW).

2) Exhaust angle: The angle between the fan outlet and the installation plane. The conventional exhaust angles for this series of fans are 0 °, 90 °, and 180 °. If you need other exhaust angles, please contact our company for customization.

3) Installation angle diagram:

The working environment suitable for this series of fans is:

1) Altitude not exceeding 1000 meters;

2) The ambient temperature shall not be lower than -25 ℃ and not higher than 40 ℃;

3) The relative humidity of the environment shall not exceed 90%;

4) The transported gas does not contain acidic, alkaline, or corrosive media, and the dust content is not greater than 150mg/m³.

When the working environment does not meet the above requirements, it needs to be explained when placing an order. Our company can customize according to specific on-site conditions.

Traffic: 2800~128000m³/h

Full pressure: 590-2650Pa

Beyond this range, please choose other series of fan products from our company, or contact our company for customization.

1. Pre use inspection

Before use, please carefully check:

(1) Whether the motor, pulley, and belt are intact and undamaged;

(2) Are there any loose connecting bolts, pulleys, and belts;

(3) Are there severe deformations in components such as the fan volute, impeller, and fan shaft;

(4) Rotate the fan impeller by hand, and the hand sensing rotation is smooth without any obvious lag phenomenon.

2. Installation

(1) The fan chassis must be installed horizontally, and vertical or inclined installation is strictly prohibited;

(2) The grounding bolt of the fan should be reliably grounded;

(3) The fan should be equipped with phase loss and overload protection devices;

(4) Be careful during installation and do not insert your hands into the pulley to avoid injury.

3. Start and Run

(1) Before starting the fan, the working power supply should be checked and must be within the range of rated voltage ± 5% and rated frequency ± 1%;

(2) The rotation direction of the fan impeller should be the same as the direction marked;

(3) The operating current of the fan should not exceed the nameplate current, otherwise it may cause damage or burning of the motor;

(4) During the operation of the fan, it is strictly prohibited to extend one's body or foreign objects towards the inside of the fan, and it is strictly prohibited to approach the belt and pulley to avoid danger.