Detailed Product Description

Name: BCSF (Backward Curved Single-inlet Centrifugal Fan L Series Wheel Design)

Fan wheel diameter range : from 300--1400 mm

BCSF Technical Specification
 Fan Type
BCSF shall be centrifugal; glass fiber reinforced plastic, single inlet and belt drive. The fan shall be acid, alkali, organic solvent gas resistant. All parts contacted with gas shall be corrosion resistant treating.  The inlet shall be smooth, arc shape for fluent air intake.
Standard & Specification
BCSF design and production shall pass the certification of Fiber Glass Enhanced Plastic Centrifugal Fan (JC/T553-94). Wheel excessive speed test shall pass the certification of Fan Wheel Excessive Speed Test Method (JB/TQ 328-83); Fan examination shall be tested according to ventilation Aerodynamic Test Method (GB/TQ 1236-85). 
 Material
BCSF housing and wheel shall be constructed of glass fiber reinforced plastic. The pitch of the layer shall not be lower than 50%.This material shall add different corrosion resistant components according to different gas compositions. The material shall not change color, spot and come off under the designed operation.
 Wheel
Fan wheel shall be centrifugal, backward curved, glass fiber reinforced plastic. The wheel shall be balancing tested statically and dynamically to level G2.5 as AMCA standard. The fan shall keep stable airflow and low noise at maximum speed.   The fan shall effectively avoid performance reduction with operating point slide. Wheel appearance shall be even color and luster, bright and clean surface, no crack, no gap, burr. Bubbles (diameter>3mm) shall not exist. 
 Fan Housing
Fan housing shall be constructed of glass fiber reinforced plastics, the thickness and strength shall be strong enough to support weight at maximum operating speed.  Fan housing shall adopt glass fiber reinforced plastics seamless sticking technology for preventing air leakage. All the metal parts in the housing shall be covered by two layers (0.2mm) of glass fiber reinforced plastics. Cover shall be smooth transition with fan. Shaft hole shall not be larger than the diameter 2mm of shaft sleeve and shall add shaft seal. 
 Inlet
 Fan inlet shall be strictly designed according to aerodynamic performance, constructed of glass fiber reinforced plastics. The surface shall be smooth and streamline with good rectification results, effectively reduce turbulence, improve fan efficiency, reduce noise.
Belt drives [only apply to belt drive ]
Fan shaft (45#steel, stainless steel is optional) shall be finish machining, hardening & tempering. The maximum velocity shall be designed to at least exceed 25% of the maximum fan operation. Shaft shall add glass fiber reinforced plastics shaft sleeve, the shaft shall be above 10mm out of the housing. The parts inside of the chamber and shaft end parts shall have corrosion resistant protection. .
Pulley shall be constructed of cast-iron; Fan pulleys shall be sized for a minimum of 150% of shaft power.
Two bearings shall be used to support fan shaft. The bearings shall be selected for a minimum (L80,000) life in excess of 80,000 hours at maximum cataloged operating velocity (ABMA American Bearing Manufacturers Association ). Bearing type shall be permanently sealed and lubricable.       
 Motor
Motor shall be closely matched to the fan load, IP54, and insulation class F.Motor and drives shall be out of airflow, avoiding erosion of corrosive gas, extending durability. 
 Nameplate
Nameplate: Permanently fixed aluminum nameplate shall be fixed on fan body clearly display fan mark, product model and serial number (i.e.: unique ID for each fan), so that the customer can use this number to find out the parts used. 
 Acceptable manufacturers
INFINAIR or equivalent.  Design based on INFINAIR model BCSF.
 

Application: Medium volume, low pressure ventilation and high temperature, explosion proof process

Volume range: 1000 ~ 180000 m3/h

Static pressure range: 400 ~ 4000Pa

Temperature range: -40 ~300^oC

Wheel series: Mercury low pressure series L

Product feature:

Stat-of-the-art design technology of Mercury series, outstanding aero-dynamic performance

Centrifugal backward curved wheel: smooth air flow pattern, broad high efficiency area

Wheel balancing level G4.0 (AMCA 204-1996)

Hyperbola Venturi inlet: turbulence reduced

China National smoke removal duty certified.