Sirocco Fan & Blower

FANTECH'S full ranges of industrial and buiding ventilating fan widly used in
industry process Plant & refrigeration,
packaged air conditioner installation.

Fantech Electric Industrial Co., Ltd. is a
leading fan designer and manufacturer in
Taiwan for over 2 decades, our full ranges
of Sirocco Fan(single suction/double
suction/twin type/V-blet type), Turbo Fan,
Duct InLine Fan, AC/DC Cross Flow Fan,
Air Curtain.., under the strict quality control
& complete operation test chamber, we serve our customers satisfactorily and won a lot of awards and fame in this field.

　　　　Centrifugal Impellers

1. SIROCCO TYPE IMPELLERS
(Construction : Forward Curved Wheels)

Multiple blower impellers have narrow width in its wheels and number of wheels range 20~64 and eminently suita for air conditioners. The material of impellers is steel, aluminium plate or stainless plate which are shaped in curves. Three types such plates to main shafts : in these types are produced by pressing down cylindrical plate and side plate impeller feather pin(conventional type) or by main shaft cutting(mold type) or through a process of rolling main haft(rolling type).
Fan drive type is classified into drive by direct connectio
to motor and V-belt connection and choice is depending on required functions.
Single as well as double inlet wheels are available.
In terms of direction of CW or CCW rotation are supplied

OUTLINE DIMENSIONS　　　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　　Centrifugal Impellers

	*2. TURBO* (Construction : Backward Wheels)
	Turbo blowers are suitable to high static pressure and heavy-duty environment Width of impellers is very narrow and designed to work better under the condition demanding higher speed. Most frequently used pressure ranges are between 100mmAq and 1000mmAq. Mostly used for air transfer machine, air blower for boilers, chemical factories and industrial purpose.

OUTLINE DIMENSIONS　　　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　Centrifugal Multiple Impellers Blower

1.Single inlet wheels directly connected
　drive type multiple impeller blower:

This is the type most frequently used for ordinary air
carrier equipment and its construction is similar to
centrifugal blower except its construction of impellers.
Casing is made of steel plate and has volute curve and
its size is smaller than turbo type. Discharge outlet of
casing is bigger and wind velocity of discharge is low
thus suitable to low speed duct and low noise type.
Mainly used for suction and discharging air equipment,
small boilers, cooling and heating device, air shower
and for ventilation at parking lot.
Depending on air volume and static pressure
2-electrodes (3450RPM), 4= electrodes (1750RPM).
6-electrodes (1150RPM) etc. can be used and depending
on place of use direction of rotation and location of motors can be selected too.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　Centrifugal Multiple Impellers Blower

	2. Tow inlets directly connected drive type multiple blower:
	Robust in construction, easy to check and ideal for conditioner, constant temperature and humidity preserver, heater, cooling and heating equipment and ventilators. Motors are low-noise type 6-electrodes (1150RPM) and 8-electrodes (850RPM) are mainly used and by changing number of revolutions of motor proper level of air volume and velocity can be selected.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　Centrifugal Multiple Impellers Blower

3. Twin inlets directly connected
drive multiple impeller blower:

It is suitable to thermostat (20R/T or less), fan filter
unit, large size air conditioner (10R/T or above).
Motor direct connection type has 6 electrodes (1150RPM) or 8 electrodes (850RPM) and number of RPL convertible. Depending on the demand 4-electrodes (1750RPM) and 2 electrodes (3450RPM) can also be supplied and depending on required air volume and static pressure etc. production by custom order is also possible.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

V-belt drive single & twin type multiple impeller blower:


FS-900D SINGLE TYPE	FS-900D×2 TWIN TYPE

V-belt drive single & twin type multiple impeller blower is made up by assembly of ball bearing, shaft, bracket, motor and blower pulley, And performance curve of blower is a single type for this reason when twin type is chosen in consideration of need for greater air volume by application of air volume, RPM and shaft power can be found.

For example when air volume of single type blower is 50 m3/min, 1,000RPM and shaft power 1.0kw and replacing this type with two type is desired it is possible to find out 100m3/min. RPM1050 and shaft power 2.15kw.
Provided that, regardless of replacing single type with twin type static pressure is constant.

Principle of blower property relationship

1. Formula through which air volume, wind pressure 　　and shaft power are found under the condition where 　impeller diameter is constant but RPM varies.	2. Formula though which air volume, wind pressure and 　　shaft power are found under the condition where impeller 　RPM is constant and Impeller diameter varies.

Where	Q = AIR VOLUME (m3/min) PT = TOTAL PRESSURE (mmAQ) kw = SHAFT POWER (Kw) N = REVOLUTION (RPM) D = IMPELLER DIA (mm)

　　　CENTRIFUGAL TURBO BLOWER

FEARTURE:

It is suitable for both high or low air pressure and has a higher efficiency than other types.
It is robust in construction, easy to handle and simple to install.
It has a broad scope of application including burner, for air transfer and chemical factories. etc.
The aforesaid blower has backward curved wheels for this reason it assures high efficiency and robustness. It is an ideal type of blower with broad range of application which works well either in air with constant temperature or filled with dust or sticky gas, high temperature air and variety of other gas. In particular by virtue of its strong absorptive power and high level of discharge air pressure assures excellent performance.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　　　　　　　　DUCT IN-LINE FANS

The above mentioned duct in line fans are fans designed
to be a mixed air current fan type and it has been specially developed for the purpose of transferring from centrifugal power to shaft.
Special feature of this fan is with its housing which can block the vibration and noise completely and air dynamically designed impellers.
Duct in-line fans are directly connected to duct line therefore it is compact and simple to install.
It can be used for the purpose of supply and discharge of
air and it can be installed in any angle depending on position of duct.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

　　　　　　　CROSS FLOW IMPELLERS

		DIMENSIONS 　　　　　　　　　　　　　　　　Unit: mm

CROSS FLOW FANS

It is very quiet and suitable for producing quantity of air volume.
Impellers may be produced form ABS synthetic resin product which is nonmetal materials with strong anti-corrosion and resistant against high temperature besides aluminium.
Cross flow fan and cross flow impellers are applied to air curtain, film driers, fain coil units and suitable for air conditioners and cooling and heating machinery for home and office etc.

OUTLINE DIMENSIONS AND SPECIFICATIONS

EXAMPLES OF AIR CURTAIN AND FLOW OF AIR CURRENT

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

OUTLINE DIMENSIONS

*Fig. 1.* Air curtain shown in Fig. 1 blocks penetration of hot air Into rooms in summer and cold air in winter additionally it effectively maintains indoor temperature level. Air curtain is used at entrance door of a building. stores and schools `etc. in broad field of application.
*Fig. 2.* Air curtain show in Fig. 2 is applied for refrigerating and cold store and it blocks discharge of refrigerated air outward from refrigerator and cold stores and prevents penetration of external hot air from penetrating into cold store. It is applied to refrigerating equipment, cold room, refrigeration storetank and store rooms.
*Fig. 3.* Air curtain shown in Fig.3 blocks penetration of insects and dusts from outside into rooms and also preserves indoor room temperature. It is applied to restaurant. hospital and food storage etc.

　　　　　　　　Cross Flow Cooling Fans

FEATURE:

It is an ideal fan for prevention of overheating and destruction of transformer and insulator by supplying air with a certain temperature.
In the special features of cooling fans are
Included generation of great amount of air volume for its fan size and motor power and it runs quietly and without vibration.
This type of fans have robust structure and compact size and its installation and operation are very simple.

OUTLINE DIMENSIONS

TYPICAL SPECIFICATIONS　　　　　　　　　　　　　　　　　　　　　Unit: mm

	PROPELLER 　　　IMPELLERS

Propeller impellers are suitable to large air volume and low air pressure and air is blown toward the direction of shaft piping and structure are very simple.
Propeller Impellers are produced under the process of precision molding thus effective performance and yield are assured and its appearance is in streamline and good looking.
Scope of application of propeller impellers is quite extensive including for ventilation in structures and buildings and for heating and cooling for variety of units as well as for mines and tunnels.
The aforementioned impeller is made from aluminium for this reason it has strong resistance against corrosion and with minimum power maximum air volume can be generated.

TYPICAL SPECIFICATIONS