The principle of operation is based on the suction of the gaseous medium through the central opening and discharge through the side, radial outlet. The kinematic movement of the air mass gives the rotor, equipped with curved blades. Under the influence of the latter, the flow changes direction from axial to radial. The curvature of the blades in one direction or another depends on the direction of rotation. Bending back helps to save energy, resistance to peak overload. Selection options: power, speed, performance, air pressure at the outlet.
Content:
- Vents VK 125 - affordable price
- Electrolux EPVS / EF-450 - auxiliary device
- Vanvent BP-B2-120-60-E - speed control
- Era Mars GDF 150 - durable lifespan
- Shuft CFk 125 MAX - budget and performance
- Ostberg RFE 140 BKU fan - one-sided suction
- Ballu Machine MIXFAN 200 - Economy Class
- Vortice Vort Press 110 LL I - hidden installation
Vents VK 125 - affordable price
Inexpensive among analogs, the supply and exhaust unit for the implementation of air in residential, commercial and industrial buildings. Refers to the channel centrifugal type. Used durable, resistant to moisture and dust plastic. Rolling ball bearings are used.
Protection against overheating is built in, - by means of thermal fuses and automatic switching on after a forced stop. The reduction of vibration and noise contributes to the dynamic balancing of the reverse rotor. Mounted blades with reverse bend (back).
Pros:
- Low cost, simple design.
- Quality materials, resistant to moisture and dust.
- The ability to adjust the speed.
Minuses:
- At installation it is required to read the instruction carefully. The device itself is very delicate and fragile.
Electrolux EPVS / EF-450 - auxiliary device
Supply and exhaust centrifugal fan. It is used as an additional injection device in compatible ventilation systems to provide the necessary back-up gas-air environment. Mounted to rounded duct seats.
Powered by a stationary single-phase mains 220 volts. Differs in small production of noise in use. The case and the individual fan assemblies are made in a waterproof and dustproof design. Used galvanized steel and durable plastic.
Pros:
- Simple and clear construction, simple installation.
- It creates additional pressure required during peak loads.
- The possibility of independent use for the ventilation of your own apartment.
Minuses:
- With the transfer of production to China, the company lost face - the quality of the products is lame.
Vanvent BP-B2-120-60-E - speed control
Device for ventilation of small size rooms. The power unit and the impeller - ebmpapst (Germany). Powered by a 220 volt fixed circuit. The case and blades are made of steel, which contributes to reliability and stable operation.
The possibility of changing the speed by means of an electronic continuously variable control unit is provided. Designed for use in humid and dusty environments. Unpretentious to maintain, does not require special preventive care measures.
Pros:
- The ability to change the speed, performance adjustment.
- Unpretentious, reliable, tolerates moisture and dust.
- Easy, good for use in the workshop, garage.
Minuses:
- Very noisy at full power, standing nearby, hearing starts to cut nearby.
Era Mars GDF 150 - durable lifespan
Centrifugal duct fan. Designed for environments with high humidity and dust.
The body is made of galvanized steel.The reverse rotor is used, equipped with plastic blades. Bend - back. This factor contributes to energy savings and resistance to abnormal operation.
Mounted in the ventilation duct, the appropriate size. The possibility of mounting to the ceiling, wall. Adjustment is carried out by an electronic unit or electromechanically, through a transformer, in steps.
Pros:
- Can work up to 40,000 hours, used ball bearings.
- The case from galvanized steel, is not afraid of water, an atmospheric precipitation.
- Performance, the ability to adjust.
Minuses:
- Plastic blades begin to wear out over time, standing in the welding shop, where small sludge often flies.
Shuft CFk 125 MAX - budget and performance
Centrifugal fan combining good performance and reasonable cost. Composite material with high strength characteristics and sound-absorbing properties was used.
The power unit is a motor-wheel powered by a single-phase power grid. Thermal protection is provided, adjusting the rotation speed in the range of 0 ~ 100% of the nominal value.
The unit does not require special maintenance measures. The demountable case provides access to internal knots for survey and preventive maintenance.
Pros:
- Composite material, durable, not afraid of water.
- Thermal protection, installation in any position, at any angle.
- Reasonable price for such opportunities.
Minuses:
- Negative traits buyers not identified.
Ostberg RFE 140 BKU fan - one-sided suction
High-quality product for indoor ventilation. The principle of operation is centrifugal. The housing, impeller and blades are made of durable steel with galvanized coating.
The blades are folded forward, which provides one-sided suction. The units of the unit, including the rotor, are subjected to dynamic and static balancing. This provides reduced vibration, noise. Improves stability.
Pros:
- High-quality assembly, reliability, unpretentiousness.
- Fastening the engine and the rotor on a separate plate - easy access for inspection and maintenance.
- Thermal contact, automatic restart.
Minuses:
- Good performance, but more power consumption. A little, but still.
Ballu Machine MIXFAN 200 - Economy Class
Centrifugal fan assembled using composite materials. The use of the latter has increased the strength, weather resistance, increased noise reduction.
Used ball bearings that do not require maintenance. Possess big motor potential. It is possible to adjust the speed, respectively, performance.
Pros:
- Economy class, composite materials.
- Adjustment of turns.
- Performance.
Minuses:
- The kit does not include fasteners, this is a minus.
Vortice Vort Press 110 LL I - hidden installation
Centrifugal fan principle of operation. It is used when working with extended ventilation ducts. They are used in rooms with strict requirements for the interior.
The unit is designed so that after installation only the front panel remains visible. Applied vibration mounting power unit to the body. The impeller has a double casing.
Pros:
- Design, hidden installation.
- Noise suppression.
- Build quality.
Minuses:
- Low performance, price.
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