The principle of the device - centrifugal (radial). The moving part of the working body is a wheel with curved blades. The body is made in the form of a spiral, resembling a snail house. Air is sucked through the side opening, picked up by the blades. At the same time, the gas-air mass is supplied with additional kinematic energy. Further, the flow is directed through the outlet. The blades bend forward or backward. Wheels can be one or two. Execution option - right or left. Selection criteria: power, impeller rotational speed, number of blades, outlet pressure, performance.
Content:
- Tywent WBN 130/1 - for small spaces
- BP-B2-120-60-E Vanvent - simple, inexpensive
- ELMOTECH VFS-120-2E-A-1 - for heating boiler
- BDRS 120-60 Bahcivan - intake
- ERA D 125 (STELS 125) - modular assembly
- BP-1000 Formic - high performance
- Ostberg RFE 140 CKU series RF - mounting in any position
- CBM / 2-133 / 046-90 W Soler & Palau - quality
Tywent WBN 130/1 - for small spaces
Centrifugal (radial) drum-type fan. The working body is enclosed in a steel case, made in the form of a snail. For the manufacture of wheels and blades used high-strength steel. An additional protective coating is a polymer applied by a polyester method with heating in a furnace.
The power device is a single-phase 220 volt synchronous motor. It is used to work with a common ventilation system. Stationary mount.
Pros:
- Small size, productive, easy installation.
- The use of steel for the body and paddle drum plus a polymeric protective coating.
- Acceptable cost with appropriate build quality and technical specifications.
Minuses:
- Near it is impossible to stand for a long time, it starts to buzz in the head from noise.
BP-B2-120-60-E Vanvent - simple, inexpensive
Device for ventilation of domestic, industrial, laboratories, workshops, sports facilities. The principle of operation is radial. The body is a snail. The impeller with curved blades is assembled from high-quality durable steel. The drive from the single-phase electric motor is 220 volts.
The rotor is external. It differs in performance with small transverse dimensions of the ventilation channel. The possibility of stepless adjustment by speeds is provided by an electronic control unit.
Pros:
- Simple design, it is easier to invent. Electronic speed control.
- Steel with a protective coating, transports precipitation and dust.
- Standard seating, no need to adjust anything during installation.
Minuses:
- It is necessary to put away from people or close the soundproof cover.
ELMOTECH VFS-120-2E-A-1 - for heating boiler
Centrifugal fan enclosed in a "snail" type housing. Material - durable aluminum alloy. Designed for forced air injection into the boiler. Equipped with an external damper to adjust the volume of the injected air mass.
Constructive solution allows to work with units of different power. The fan is perfectly balanced. Nodes carefully fitted to each other - it reduced the vibration phenomena and noise. It has a small size and weight. Can be used as a stand alone solution for ventilation.
Pros:
- Small, productive, well forces air into the boiler.
- Adjusting the air supply through the external flap.
- Aluminum housing and metal impeller.
Minuses:
- The price for a boiler may be worth the money, but how is a separate fan?
BDRS 120-60 Bahcivan - intake
Radial fan of one-sided orientation. It is used to create high pressure at the outlet.The device is used in local cooling systems, forced air supply to heating devices. Electric motor - single-phase with external rotor.
The body is made of steel sheet, protective powder coating is applied. The blades of the impeller are bent forward, which has reduced the overall dimensions and the total weight of the structure. Additional processing - surface galvanizing.
Pros:
- Exterior design, neatly and accurately assembled, is a pleasure to hold in your hands.
- All knots from steel plus sheeting.
- Good performance with relatively small sizes.
Minuses:
- Inaccurate description. I wanted to buy to the boiler, in fact, this kind of activity is contraindicated, but written.
ERA D 125 (STELS 125) - modular assembly
Fan of supply and exhaust type. The direction and destination is determined during installation, by joining the inlet or outlet to the counter flange. The body is made of steel with a protective enamel coating. The terminal box is enclosed in a sealed enclosure.
A single-phase electric motor and an external rotor are mounted on a separate, reclining platform. This provides easy access for inspection and routine operations. The centrifugal fan is used for duct mounting.
Pros:
- Normal, channel, works, good power.
- Sheeting of the case.
- The engine and rotor are assembled on a separate opening lid.
Minuses:
- Necessary careful installation, distortions, blockages will cause vibration and loud noise afterwards.
BP-1000 Formic - high performance
Designed for use in local systems of low ventilation. Built in line conditioning. With a relatively compact size stands out indicators of air. The body is classic, snail.
The principle of operation is radial (centrifugal). Made in waterproof and dustproof design. There is a choice of ventilation mode, by means of a stepless change in the engine speed through an electronic control unit. Operating temperature range from -30 ° to + 60 ° C.
Pros:
- Productive, compact.
- Steel everywhere, protection from dust, dirt, moisture.
- Smooth change in speed.
Minuses:
- Heavy, requires rigid fixation, otherwise vibration and additional noise are manifested.
Ostberg RFE 140 CKU series RF - mounting in any position
Centrifugal fan in the snail housing. Equipped with asynchronous single-phase motor. External rotor used. The blades of the impeller are bent forward, which contributed to a reduction in weight and overall dimensions. The main material for the housing and the impeller is galvanized steel.
The product is made with one-sided suction and discharge, but can be mounted in any position, which changes the direction of flow. The fan goes through all stages of dynamic and static balancing in order to reduce the harmful effects of vibration.
Pros:
- Removable panel with engine and rotor.
- Quality, unpretentious, only periodically clean the stuck dust.
- Install as required, or as you like.
Minuses:
- Price, compared to competitors.
CBM / 2-133 / 046-90 W Soler & Palau - quality
High-quality centrifugal fan series "snail". Material - galvanized steel. The impeller blades are directed forward. The fan went through the stages of static and dynamic balancing.
The degree of protection against moisture and dust. Rotating parts rely on maintenance-free rolling bearings.
Pros:
- Excellent quality, visible even at a glance.
- Galvanized.
- Protection against water and dust.
Minuses:
- Consumers of negative properties are not found.
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