Description

BLC Centrifugal Blowers

CEM electric BLC Centrifugal blowers are widely used on board for extraction and ventilation of air in closed environments such as; toilets, kitchens, garages and engine rooms

The centrifugal fan was invented in 1832 by military engineer Lieutenant General Alexander Sablukov of the Russian Empire’s Imperial Russian Army

Often called “blowers”, centrifugal fans vary differently from axial fans. The pressure of an incoming airstream is increased by a fan wheel, a series of blades mounted on a circular hub. Centrifugal fans move air radially — the direction of the outward flowing air is changed, usually by 90°, from the direction of the incoming air

The airflow created by centrifugal fans is directed through a system of ducts or tubes. This helps create a higher pressure airflow than axial fans. Despite a lower flow rate, centrifugal fans create a steadier flow of air than axial fans. Centrifugal fans also require a higher power input

BLC Centrifugal Blowers MOTOR DETAIL:
Direct current: 

• Permanent magnet motor 12/24V DC
• Protection IP23-44
• Insulation Class F
• Continuous Duty (S1)

Alternating current:

• Induction electric motor
  • 110V single-phase (MS) – 60Hz (available on request)
  • 230V single-phase (M) – 50Hz (60hz available on request)
  • 230~400VAC Three-phase – 50Hz (60hz available on request)
• Protection IP54÷55
• Insulation Class F
• Continuous Duty (S1)

BLC Centrifugal Blowers Fan blades: steel forward blade, dynamically and statically balanced

Centrifugal fans are constant-displacement or constant-volume devices, meaning that, at a constant fan speed, a centrifugal fan moves a relatively constant volume of air rather than a constant mass. This means that the air velocity in a system is fixed even though the mass flow rate through the fan is not

BLC Centrifugal Blowers ORIENTATION

Please note: the orientation of the blower must be stated when ordering
OPTIONS:
RD: right direction
LD: left direction

CONSTRUCTION FEATURES
Spiral casing: made of marine grade painted steel
Fan: steel forward blade, dynamically and statically balanced
Note: our BLC blowers are supplied with flanged fittings on the inlet and outlet side and a safety grid on the inlet side

DATA SHEET – CEM BLC Centifugal blowers

The centrifugal fan uses the centrifugal power supplied from the rotation of impellers to increase the kinetic energy of air/gases. When the impellers rotate, the gas particles near the impellers are thrown off from the impellers, then move into the fan casing. As a result, the kinetic energy of gas is measured as pressure because of the system resistance offered by the casing and duct. The gas is then guided to the exit via outlet ducts. After the gas is thrown-off, the gas pressure in the middle region of the impellers decreases. The gas from the impeller eye rushes in to normalize this. This cycle repeats and therefore the gas can be continuously transferred

Manufacturers page for BLC Centrifugal Blowers

About CEM Pumps and Blowers

Established in 1970 C.E.M. elettromeccanica S.r.l. has been a leading manufacturer of electric pumps and DC motors primarily focussed for use in the maritime sector
In the 48 years, we have been making motors and our constant expansion in the national and the international markets have resulted in the broadening of our extensive product range

…highest quality materials…design…innovative production processes…remarkable lifespan…

This makes us the ideal partner for large and medium-sized boat builders of pleasure, fishing and military vessels.

Our extensive range now includes:

• DC and AC electric pumps
• Belt driven pumps, with manual or electromagnetic clutch
• hydraulically driven pumps
• water pressure systems
• centrifugal and axial blowers
• diesel driven pumps
• manual pumps
• DC motors

Our commitment to using the highest quality materials used, the special care invested in the design and in the innovative production processes we adopt, we are able to offer excellent performances and a remarkable lifespan of our products exactly what you need when our product can offer extra hours of safety when in difficulty

The CEM factory is based in Nonantola close to Modena in Italy, and is a family-owned business with generations of experience in the manufacture of pumps, blowers and electric motors

All of our products are built to standards that are in accordance with classification and certification can be obtained from each of the bodies: Bureau Veritas, Det Norske Veritas (DNV), Lloyd’s Register and RINA