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首页 // 产品展示 // 一般离心通风机 // 4-79型离心通风机 You are here: ??ֲ?? // Products // General Centrifugal Fan // 4-79 Centrifugal Fan
※ 4-79 centrifugal fan
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4-79 centrifugal fan
Product introduction :

I. Use of fan The 4-79 centrifugal fan can be used for indoor ventilation of general factories and large buildings. It can be used as input gas and output gas. The type of gas to be transported is air and other gases that do not ignite spontaneously, do not explode, have no entanglement, are harmless to the human body, and are not corrosive to steel materials. No viscous substances are allowed in the gas, and the dust and hard particles contained in it are not more than 150mg / m3. Gas temperature: no more than 80 C. Those with similar gas properties can also be used.
Second, the fan type 1, each fan casing is made of two types of clockwise rotation and counterclockwise rotation.
2. The exit position of the fan is expressed by the exit angle of the casing. Model 4-79 fans No3A ~ 6A are made into a type when they leave the factory. The unit is reinstalled to the required position according to requirements. The position of the air outlet can be adjusted from 0 to 225 , and the interval is 45 C. The position of the air outlet can be adjusted from 0 to 180 with an interval of 22.5 ; No10E ~ 20E single inlet and double inlet outlet positions are made into three fixed sizes: 0 , 90 , and 180 , which cannot be adjusted. If you need non-standard models such as special machine numbers and special air outlet angles, our company can design and manufacture them for you, but you need to specify in detail when ordering.
Structure of the fan The fan is mainly composed of impeller, casing, air inlet and motor. In addition to the above-mentioned parts, No7C ~ 20E also has a transmission part.
1. Impeller: It is composed of backward inclined arc thin plate blade, curved front plate and flat back plate. They are all made of steel plates and corrected for static and dynamic balance. The air performance is good, the efficiency is high, and the operation is stable.
2. Chassis: made of two different types. No3 ~ 12 case is made as a whole and cannot be disassembled. The casings of No14 ~ 20 are made into two-open type, except that they are divided into two halves along the mid-level horizontal plane and connected with bolts.
3. Air inlet: It is made as a whole, installed on the side of the fan, and the cross section parallel to the axial direction is a curved shape, which allows the gas to enter the impeller smoothly with less loss.
4. Transmission group: It consists of main shaft, bearing box, rolling bearing, pulley or coupling.

Performance parameter table of 4-79 centrifugal fan

Machine number

Rotating speed
(rpm)

Air volume
(m 3 / h)

Full pressure
(Pa)

power
(kW)

3A

2900

1970
2180
2430
2670
2900
3130
3480
3830

1196
1167
1157
1117
1068
1039
892
725

1.5

1450

990
1100
1220
1340
1450
1560
1740
1910

304
294
284
274
265
255
225
176

0.75

3.5A

2900

3120
3460
3860
4240
4600
4960
5520
6070

1627
1588
1568
1509
1460
1421
1205
980

3

1450

1560
1750
1930
2120
2300
2480
2760
3040

412
402
392
382
363
353
304
245

1.1

4A

2900

4670
5220
5760
6310
6860
7410
8240
9080

2316
2078
2048
1980
1901
1852
1578
1274

5.5

1450

2330
2610
2880
3160
3430
3710
4120
4540

529
519
510
490
480
461
392
323

1.1

4.5A

2900

6640
7440
8200
8990
9790
10550
11720
12920

2696
2626
2598
2510
2412
2343
2000
1618

11


Machine number

Rotating speed
(rpm)

Air volume
(m 3 / h)

Full pressure
(Pa)

power
(kW)

4.5A

1450

3320
3720
4110
4510
4890
5270
5860
6450

676
657
647
627
598
588
500
402

1.5

5A

2900

9100
10200
11250
12350
13410
14480
16100
17720

3334
3255
3216
3099
2981
2902
2471
2000

15

1450

4560
5100
5630
6180
6710
7240
8050
8860

833
813
804
774
745
725
617
500

2.2

6A

1450

4890
8820
9740
10700
11600
12520
13920
15320

1196
1176
1157
1117
1068
1039
892
706

5.5

960

5230
5840
6420
7080
7680
8290
9220
10100

529
519
509
490
470
451
402
313

1.5

7C

1250

10820
12120
13340
14650
15850
17150
19160
20850

1206
1186
1167
1127
1078
1049
902
715

7.5

1120

9650
10830
11950
13100
14200
15350
17200
18800

970
951
931
902
863
843
725
549

5.5

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