1、 Overview of HTFC-III Cabinet Centrifugal Fan

1.1 HTFC-III cabinet centrifugal fan is a type of centrifugal fan with backward tilting blades. The product consists of a low-noise backward tilting blade centrifugal fan, motor, bearings, transmission components, and soundproof box. According to different installation positions, 12 different angles of air inlet and outlet positions are provided to meet the needs of users in different installation environments. According to different requirements for fire protection and ventilation, there are two types: Type A and Type B. Type A motors are installed outside the box for fire smoke exhaust, and have been tested for high temperature resistance by the National Fire Equipment Supervision and Quality Inspection Center in accordance with GA211-1999 "High Temperature Resistance Test Method for Fire Smoke Exhaust Fans". They can operate continuously for more than 60 minutes under high temperature conditions of 300 ℃; The B-type motor is installed inside the box for ventilation and air exchange.
1.2. The fan is divided into 17 specifications series according to diameter, ranging from 250-1600mm. The air volume is 1000~300000m3/h, and the total pressure is 280~2300Pa. The fan is divided into single speed and dual speed, and the dual speed fan is equipped with a dual speed motor to achieve two speed adjustments, which can meet the needs of users for performance adjustment at different operating points. The fan can also be equipped with a variable frequency motor and a variable frequency controller to achieve high-speed variable frequency. It is recommended to adjust the frequency and lock it between 25Hz~50Hz.
1.3. To meet the requirements of explosion-proof environments, the fan can be made into an explosion-proof fan with an explosion-proof rating of EXdIIBT4, suitable for places with flammable and explosive gases.
1.4. To meet the requirements of noise in different places, fans can be equipped with mufflers of different lengths, and the soundproof box of the fan can also be thickened to reduce fan noise.
1.5. Fans can be equipped with primary, medium, or high-efficiency filters to improve air cleanliness. When configuring filters, actual pressure loss should be considered, and the length of the fan casing should be appropriately increased.
2. Working conditions of HTFC-III cabinet centrifugal fan
Working temperature: -20~+40 ℃ (can operate continuously);
High temperature resistance: 100 ℃ (can operate continuously for 20 hours);
300 ℃ (can operate continuously for 60 minutes);
Temperature: less than 90%;
Medium conditions: air;
Working power supply: three-phase, 380V/50Hz;
3. Application of HTFC-III Cabinet Centrifugal Fan
Fans can be widely used for ventilation and smoke exhaust in hotels, restaurants, auditoriums, theaters, basements, industrial and mining enterprises, office buildings, and other places, especially suitable for places that require low noise and high air volume ventilation and smoke exhaust.
4. HTFC-III Cabinet Centrifugal Fan Configuration
4.1. Standard Configuration

● Impeller; ● Chassis (chassis, current collector, bracket); ● Motor; ● Bearings (with casing); ● Spindle;

● Pulley and belt; Belt cover (only type A); ● Silent enclosure; Motor regulating track; ● Import and export flanges;

4.2. Optional parts and accessories (indicate whether to purchase when ordering)

● Vibration reduction equipment; ● Muffler; ● Filter;

● Control box; ● Docking flange; Motor protective cover (only type A);

5. Processing technology of HTFC-III cabinet centrifugal fan
5.1. The fan impeller and casing are made of high-quality galvanized sheet metal, all produced in molds using riveting, biting and other methods, with a clean and smooth surface and no welding deformation.
5.2. The soundproof box body of the fan adopts a frame and box plate assembly design. The frame is made of advanced metal cold bending unit and stretched in one go (aluminum alloy profiles can also be used according to user needs). The box plate is made of galvanized sheet, with a clean and beautiful surface and strong corrosion resistance. The inner layer is made of high-quality PVC soundproof material (which can also be galvanized soundproof micro perforated sheet, and the interlayer is ultra-fine glass wool), which can further reduce noise. The product can be disassembled and assembled on site.
6. Performance parameters of HTFC-III cabinet centrifugal fan

































7. Position number of HTFC-III cabinet centrifugal fan air outlet

8. Dimensions of HTFC-III Cabinet Centrifugal Fan

9. Dimensions of inlet and outlet flanges for HTFC-III cabinet centrifugal fan