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YDF series of induced fan according to the different needs of users can be divided into two types, namely, YDF-A series pipeline induced fan and YDF-B series fan type induced draft fan, induced by the high pressure pipeline type blower fan, small diameter spiral pipe and nozzle; multiple fan induced fan by the Taiwan ultra thin fan and nozzle. Underground garage ventilation are adopted in the traditional warehouse layout in low-speed wind pipe ventilation system, its biggest drawback is: wind pipe section size is larger, the gas often gathered in the corner away from the air stream; garage height ordinary low, using low speed wind pressure; mounting workload, high investment; high operating costs. At the same time some buildings due to its characteristics of the wind pipe cannot install.
YDF series jet inducing fans
One, characteristic and Application
Induced fan are part of a tract induced ventilation system, it and the air blower, air exhaust wind the whole system. The principle is the system design, the appropriate layout of multiple fan, induced by high-speed airflow nozzle injection induced the fresh outdoor air or treated in air, under the condition of no wind pipe to the required area, optimal indoor air distribution, in order to achieve effective and economic effects of ventilation. The use of ductless inductive ventilation systems, can save design, manufacturing, installation of air pipes and other supporting engineering costs, this part of the cost than the use of induction wind turbine is more expensive, but to the whole level for ventilation duct, air blower, exhaust fan to wind pressure than the use of pipeline many small, so you can choose fan wind quantity of low pressure, so that the required power is reduced, greatly reduces the investment cost of operation cost. When the blower stops running, induced fan can also run, play the role of local ventilation.
Induced fan built-in high-efficiency centrifugal fan, low noise, small size, light weight, convenient (vertical hoisting, installation, maintenance is simple bedroom can), widely used for matching the underground parking, gym, workshops, warehouses, shopping malls, supermarkets, entertainment and other large occasions ventilation.
YDF-I induced fan for wind induced draft fan system, horizontal and vertical, horizontal dual-purpose two structure forms, motor using a dedicated fan of single-phase motor.
YDF-II induced fan for the cabinet body structure, horizontal installation, belt rotation, with three-phase motor, general and cylindrical spiral wind pipe, flexible nozzle are combined into inductive ventilation system air duct
Design of intelligent system of jet induced system, setting air quality sensor in induced spaces, to detect the concentration of carbon monoxide, the controller automatically controls the opening and stop inducing fan (Intelligent induced fan), in order to realize the automatic control.
Two,Advantages compared with the wind pipe ventilation system two, induced ventilation system with traditional has
1, the system design is simple, design change, flexible, easy to modify, flexible layout, spraying direction may be adjusted whenever and wherever possible;
2, easy installation, construction is simple, can be installed in the targeted location, eliminate the dead angle;
3, maintenance is simple and convenient, single machine maintenance, does not affect the operation of the whole system;
4, air quality is high, the entire space induction system completely circulation of air, do not stay dead, improve air quality;
5, fan by high-quality cold-rolled plate (made of aluminum alloy frame), surface spray, the beautiful appearance, coordination and space decoration.
6, motor maintenance free fan motor, built-in high efficient centrifugal fan, low noise, high precision of impeller dynamic balance checking, small vibration.
Three,Performance parameters table and dimension table

型號
Model
NO

風量
Air flow
(m3/h)

出口風速(m/s)

功率
speed power
(w)

射程(m)

重量
Weight
(kg)

噪聲
Noise
dB(A)

噴口形式? (直徑×數量)

YDF-I-6L

650-850

11~15

100

10

20

50

Ф75×3

YDF-I-6W1

120

10

20

50

Ф75×3

YDF-I-6W2

120

10

20

50

Ф70×3

YDF-I6W3

1150~1350

14~24

250

15

35

58

Ф70/Ф75×3

YDF-Z-2.2

1380

11~16

180

20

45

65

Ф175×1

YDF-II-2.25

2300

風壓1300pa

2200

/

130

80

Ф35×23

YDF--II-2.5

3600

風壓1736pa

3000

/

150

84

Ф35×36

YDF-II-2.8

6000

風壓1760pa

4000

/

180

87

Ф35×60

Four,The installation form four, size and nozzle
(1) YDF-I6L induced fan diagram (universal spherical nozzle)
Spherical vents vertical induced fan is composed of a centrifugal fan, noise case, three universal ball nozzle, turning angle 60 °, nozzle with 75 × 3; main features: nozzle position increased 8, adjustable nozzle, adaptable design and different needs, unit miniaturization, improve the efficiency of the fan.
The installation form of nozzle
(2) YDF-I-6W1 horizontal induced fan diagram (universal spherical nozzle)
A ball-shaped spout horizontal induced fan by centrifugal fan, noise case, three universal ball nozzle. Will angle <60 °, nozzle with 75 × 3 main characteristics: flexible adjustment of rotation angle, meet in a variety of environmental installation, beautiful appearance.
Nozzle installation
(3) YDF-I-6W2 induced fan diagram (catheter nozzle)
Duct horizontal induced fan by centrifugal fan, noise case, three following catheter. Rotary angle 45 °, catheter length =400mm, Φ 80 × 3, 100 × 2, 140 × 1. Main features: the air guide accurate, spray distance far, relay entrainment of large.
The installation form of nozzle
(4) YDF-I-6W3 induced fan
Can be equipped with a universal ball nozzle or tube nozzle, the shape of the
The installation form of nozzle
(5) YDF-Z-2.2 induced fan diagram
No box of axial flow fan by induction of axial flow fan, muffler, nozzle, a fixed rack, back to the angle 60 °, nozzle diameter 175.
Main characteristics: the product is similar to jet fan, a range of more long-term, using up to places, convenient installation.
The installation form of nozzle
(6) YDF-II series pipeline induced fan size
YDF-II series of pipe type induction wind chassis, die frame, centrifugal fan, embedded muffling static pressure box, the rotary angle 45 °, nozzle diameter 36. Centrifugal fan with low air pressure, the pressure is greater than or equal to 1750pa, the wind pipe adopts spiral pressure pipe with small diameter, the nozzle to ultra high speed gas flow entrainment, nozzle with air adjusting valve can adapt to various environment.
The installation form of nozzle
Five, schematic, horizontal, vertical installation
Induced fan unit is the blower system is an important intermediate ventilation connection ring, air inlet, air outlet position, installation position of induced fan is very important, is directly related to whether the formation of reasonable air. The ideal layout is to let the wind sending a platoon to form the main airflow in space, by inducing air inducing fan, to complete the entire space ventilation
Six,Calculation of 1, the number of induced fan
The number of required induced fan, the ventilation mode (mechanical ventilation, natural ventilation mechanical ventilation), there is no partition, spatial shape under the premise, according to each induced fan to bear the area calculation, can refer to the following table for determining:
Application of the serial number of ventilation quantity

序號order number

適用場合的情況Application of the

送排風方式Air supply and exhaust

數量quantity

1

空間不規則,隔墻及障礙物多,氣流滯留的場合Irregular space, partition and many obstacles, gas retention.

自然進風、機械排風Natural ventilation, mechanical ventilation

100㎡/臺

2

隔墻及障礙物多,單通排風氣流易形成The partition walls and obstacles, single row airflow form

自然進風、機械排風
機械進風、機械排風Natural ventilation, mechanical ventilation

Mechanical ventilation, mechanical ventilation

150㎡/臺

3

隔墻及障礙物較少,通排風氣流較理想Partition and less obstacles, exhaust air flow ideal

機械進風、機械排風Mechanical ventilation, mechanical ventilation

200㎡/臺

4

無障礙物,只有低矮的停放物No obstacles, only low park.

機械進風、機械排風Mechanical ventilation, mechanical ventilation

250㎡/臺

Seven, applications
Comparison of 1, ventilation effect
The traditional type air duct system and comparison of induced ventilation system ventilation system in CO concentration;
The dark regions show different points of the carbon monoxide concentration, conventional pipe ventilation system in the car through the area, because only for local ventilation, CO concentration is higher, and the inductive ventilation system, because it is the air ventilation, the average CO concentration was significantly lower, and high CO concentration appeared in nearly exhaust equipment, if the installation of CO sensor, the uniform airflow distribution, detection effect is good, can control the fan operation state, to save electricity costs.
Induced air volume 2, inducing fan
According to the theorem of momentum and jet theory, inducing fan air volume can be calculated by formula: QX/QO=X/0.37
Note: the wind induced QX- range X jet in the air flow of the fan, induced by QO-
When the grace of 0.5m/s, X=10m, volume of 650m 3 /h an induced fan can induce the volume up to 17560m University /h
3, application diagram
The underground parking lot, can effectively eliminate the vehicle emissions of carbon monoxide and other air pollution, save floor space, convenient and other piping layout, ventilation ventilation effect than conventional pipe ventilation system.
Gymnasium, indoor swimming pools, exhibition center, large space buildings, winter hot air supply is a difficult problem, by using the induced fan, which can effectively solve the problem of hot air, improve the bottom temperature, save energy; summer air distribution in the ideal, eliminate the dead angle, so that all parts are to maintain a comfortable temperature.
For workshop, warehouse, supermarket can be installed above the induced fan in ventilation, effective organization flow, do not form a corner; and with the layout adjustment, convenient position of inducing fan.
Pay attention to fire ventilation: 1, the exhaust fan: should and usually exhaust fan room combination, combination. 2, exhaust air duct can be "smoke from the smoke wind zone to the farthest point horizontal distance of not more than 30m" layout, wind speed in the pipe diameter according to the standards are set to determine.
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