Centrifugal low-pressure fan series VC 4-76 #14 ZH (heat-resistant) with electric motor Electric motor AIR 280 M6 90.0 Power kW 1000 Vol./Min for general industrial use, constructed according to execution scheme No. 5 with V-belt drive, manufactured from carbon steel.
This fan is intended for ventilation or air-conditioning systems and other gas mixtures at temperatures up to 200 °C, not containing fibrous materials, sticky substances, dust, or other solid impurities in an amount not exceeding 100 mg/m³, under conditions of a temperate (U) climate (3rd placement category) and tropical (T) climate (2nd placement category) in accordance with GOST 15150.
The centrifugal fan VC 4-76 #14 ZH (heat-resistant) consists of the following assemblies, which can be purchased separately:
• fan VC 4-76 #14 ZH without electric motor
• impeller of fan VC 4-76 #14 ZH
• casing (housing) of fan VC 4-76 #14 ZH
• electric motor Electric motor AIR 280 M6 90.0 Power kW 1000 Vol./Min for fan VC 4-76 #14 ZH
General information about centrifugal fans VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm (heat-resistant):
• Low pressure
• Single inlet
• Backward-curved blades
• Number of blades: 12
• Direction of rotation: right and left
• Execution scheme: No. 5 (V-belt drive) – using V-belts, drive and driven pulleys
• Fans are manufactured in accordance with TU U 28.2-24881057-003:2023
Purpose of centrifugal fans VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm (heat-resistant):
The centrifugal fan VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm (heat-resistant) is designed to move air and other gas mixtures whose aggressiveness toward carbon steel does not exceed that of air, not containing sticky substances, fibrous materials, dust, or other solid impurities in an amount not exceeding 100 mg/m³.
Centrifugal fans VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm are used in:
• air-conditioning systems
• ventilation systems
• air heating systems
• moving drying agent (heat carrier) in technological lines for grain drying with grain drying machines A1-DS50, A1-UZM
• other sanitary-industrial purposes
The centrifugal fan VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm (heat-resistant) operates under conditions of a temperate climate, at ambient temperatures from –40 °C to +40 °C. The temperature of the conveyed medium must not exceed 200 °C.
Principle of operation of the centrifugal fan VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm :
Air, by receiving energy from the blades of the impeller, enters the fan under the influence of centrifugal force at a 90-degree angle and is directed radially into the volute of the spiral housing; in the volute, moving along the spiral-shaped housing under pressure, it is directed through the fan outlet.
Completeness of centrifugal fan VC 4-76 #14 Zh w/motor AIR 280 M6 90 kW 1000 rpm :
The fan VC 4-76 #14 ZH (heat-resistant) with electric motor Electric motor AIR 280 M6 90.0 Power kW 1000 Vol./Min consists of the following main assemblies:
• spiral housing,
• impeller,
• frame,
• collector,
• electric motor.
The impeller consists of front and rear discs, 12 sheet blades, and a hub.
The frame of the fan is welded. The base has a hole for installation on vibration isolators or foundation. The electric motor and guard are mounted on the frame.
The conical-shaped collector for supplying air to the impeller is attached to the inlet nozzle. The clearance between the collector and the front disc of the impeller is adjusted by axial movement of the collector in the inlet nozzle.
Position of the housing for right (PR) and left (LEV) rotation, view from the suction opening:
a) right rotation
b) left rotation
Note on placement categories depending on climatic conditions:
1st category: for operation in the open air (exposure to the combination of climatic factors characteristic of the given macro-climatic region);
2nd category: for operation under a canopy or in volumes where temperature and humidity fluctuations do not significantly differ from open air and there is relatively free access to external air (e.g., in tents, bodies, trailers, metal rooms without thermal insulation, as well as within the enclosure of a complete product of category 1, with no direct exposure to solar radiation or precipitation);
3rd category: for operation in enclosed spaces with natural ventilation without artificially regulated climatic conditions, where temperature and humidity fluctuations and the effect of sand and dust are significantly less than in the open air (e.g., in thermally insulated metal, stone, concrete, or wooden rooms, with no exposure to precipitation or direct solar radiation; significant reduction of wind; and substantial reduction or absence of diffuse solar radiation and moisture condensation);
4th category: for operation in volumes with artificially regulated climatic conditions, such as in closed heated or cooled and ventilated production premises; in premises with conditioned or partially conditioned air; and in well-ventilated underground premises (no exposure to direct solar radiation, precipitation, wind, sand, or dust of external air; absence or significant reduction of diffuse solar radiation and moisture condensation);
5th category: for operation in volumes with increased humidity (e.g., unheated and unventilated underground premises, including mines and basements, in the ground, and in ship and other premises where prolonged presence of water or frequent condensation on walls and ceiling may occur, such as certain holds or some textile and hydrometallurgical production workshops).
