Blowing fans ВДН-18, ВДН-20, ВДН-22
ВДН-6,3 | ВДН-26 |
ВДН-8 | ВДН-26Ф |
ВДН-9 | ВДН-28 |
ВДН-10 | ВДН-31,5 |
ВДН-11,2 | ВДН-32Б |
ВДН-12,5 | ВДН-24?2М |
ВДН-13 | ВДН-25?2У |
ВДН-15 | ВДН-25?2М |
ВДН-17 | ВДН-25?2 |
ВДН-18 | ВДН-25?2-I |
ВДН-19 | ВДН-25?2-II |
ВДН-20 | ВДН-25?2-IIM |
ВДН-21 | ВДН-28?2-I |
ВДН-22 | ВДН-36?2-Э |
ВДН-24 |
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+7 (4942) 622-023General information
• low Pressure
• One-side suction
• Direction of rotation – right-hand and left-hand
• Quantity of blades – 12 pc
Blowing fans of one way suction ВДН-18, ВДН-20 and ВДН-22 (manufactured by aerodynamic scheme of МО ЦКТИ0,7-160-II) are intended for supply of a clean airinto the combustion chambers of stationary steam boilers and production units in other industries.
Fans ВДН are intended for operation at the ambient temperature minimum -30° Сand maximum +40° С; maximum allowed temperature of moved media at thefan entry is +200° С.
Blowing fans ВДН are designed for the long period operation indoorsand outdoors (outside, under tent) in mild climate (climate optin Y, location category 2, GOST 15150-69). Allowed ambient temperature is minimum -30°C and maximum +40°C.
The casing of fans ВДН is manufactured with turning angle 0° to 270° with15° pitch, the casing ribs, which hinder instillation, can be cut.
Advantages of blowing fans ВДНby «Medved concern»:
Axial guide mechanism of a blowing fan features the improved design: rotation ring rollers are installed on the roller bearing, what ensures the smooth turning of a guide mechanism blades. The guide mechanism is equipped with a dismountable handle, which ensures the convenient connection of singleturn actuators. The application of Teflon bushes and cast iron cowl on the axial guide mechanism ensures the minimum gaps of turning pins. It reduces blowing fan operating vibration and noise level appropriately.
Blowing fans by scheme 3 and 5 have dismountable bearing unit, which improve maintenance ability: it enables bearing change in the housing without removing of working wheel. In blowing fans ВДНby scheme 3 and 5 from the working wheel side the big size bearing is installed, which improves the fans reliability. In fans ВДНby scheme 3 and 5 with №9 it is possible to install the cooling piping circuit, is necessary.
Specifications of blowing fans
Overall and mounting characteristics of blowing fans ВДН
Dimensions and connection sizes of fans ВДН(90°)
Aerodynamic characteristics of blowing fans ВДН
ВДН-6,3
ВДН-8
ВДН-9
ВДН-10
ВДН-11,2
ВДН-12,5
ВДН-13
ВДН-15
ВДН-17
ВДН-18
ВДН-19
ВДН-20
ВДН-21
ВДН-22
ВДН-24
ВДН-26
ВДН-26Ф
ВДН-28
ВДН-31,5
ВДН-32Б
ВДН-24×2М
ВДН-25×2У
ВДН-25×2М
ВДН-25×2
ВДН-25×2-I
ВДН-25×2-II
ВДН-25×2-IIМ
ВДН-28×2-I
ВДН-36×2-Э
Acoustic characteristics of blowing fans ВДН
Machine
size
|
n,
мin??
|
Measurement
range
|
The value of Lpi, dB in the octave band f, Hz |
LpA,
дБА
|
||||||
125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | ||||
ВДН-19 | 750 | Discharge | 111 | 114 | 113 | 110 | 108 | 104 | 98 | 115 |
Suction | 105 | 110 | 109 | 106 | 104 | 100 | 94 | 111 | ||
Around the hull | 100 | 104 | 103 | 100 | 97 | 92 | 85 | 105 | ||
1 000 | Discharge | 118 | 122 | 120 | 117 | 115 | 111 | 105 | 123 | |
Suction | 114 | 118 | 116 | 113 | 111 | 107 | 101 | 119 | ||
Around the hull | 109 | 112 | 110 | 107 | 104 | 100 | 93 | 112 | ||
ВДН-13 | 1 000 | Discharge | 103 | 108 | 107 | 104 | 102 | 98 | 92 | 109 |
Suction | 99 | 104 | 103 | 100 | 98 | 94 | 88 | 105 | ||
Around the hull | 94 | 98 | 97 | 94 | 91 | 86 | 80 | 98 | ||
1 500 | Discharge | 112 | 115 | 120 | 117 | 114 | 109 | 104 | 122 | |
Suction | 108 | 111 | 116 | 113 | 110 | 105 | 100 | 118 | ||
Around the hull | 103 | 106 | 110 | 107 | 103 | 97 | 92 | 111 | ||
ВВДН-15 | 1 500 | Discharge | 116 | 120 | 111 | 107 | 103 | 96 | 89 | 115 |
Suction | 113 | 115 | 108 | 105 | 101 | 93 | 87 | 111 | ||
Around the hull | 110 | 111 | 104 | 102 | 97 | 90 | 82 | 108 | ||
ВДН-20 | 750 | Discharge | 108 | 109 | 108 | 107 | 103 | 98 | 93 | 108 |
Suction | 105 | 106 | 105 | 104 | 100 | 95 | 90 | 108 | ||
Around the hull | 97 | 97 | 95 | 94 | 90 | 87 | 83 | 98 | ||
1 000 | Discharge | 115 | 116 | 115 | 114 | 110 | 105 | 100 | 115 | |
Suction | 112 | 113 | 112 | 111 | 107 | 102 | 97 | 115 | ||
Around the hull | 104 | 104 | 102 | 101 | 97 | 94 | 90 | 105 | ||
ВДН-26 | 600 | Discharge | 113 | 111 | 112 | 111 | 107 | 102 | 96 | 115 |
Suction | 114 | 109 | 110 | 108 | 106 | 103 | 98 | 113 | ||
Around the hull | 110 | 108 | 107 | 104 | 100 | 94 | 85 | 109 | ||
750 | Discharge | 119 | 117 | 118 | 117 | 113 | 108 | 102 | 121 | |
Suction | 120 | 115 | 116 | 114 | 112 | 109 | 104 | 119 | ||
Around the hull | 116 | 114 | 113 | 110 | 106 | 100 | 91 | 115 | ||
ВДН-10 | 1 000 | Discharge | 96 | 100 | 98 | 95 | 93 | 87 | 80 | 100 |
Suction | 92 | 96 | 94 | 91 | 89 | 83 | 76 | 96 | ||
Around the hull | 89 | 92 | 90 | 87 | 84 | 77 | 70 | 91 | ||
1 500 | Discharge | 103 | 106 | 111 | 108 | 105 | 100 | 95 | 113 | |
Suction | 99 | 102 | 107 | 104 | 101 | 96 | 91 | 109 | ||
Around the hull | 94 | 97 | 101 | 98 | 94 | 88 | 83 | 102 | ||
ВДН-28 | 600 | Discharge | 116 | 114 | 115 | 114 | 110 | 105 | 98 | 118 |
Suction | 117 | 112 | 113 | 111 | 108 | 106 | 101 | 116 | ||
Around the hull | 113 | 111 | 110 | 107 | 103 | 97 | 89 | 112 | ||
750 | Discharge | 121 | 119 | 120 | 119 | 115 | 110 | 103 | 123 | |
Suction | 122 | 117 | 118 | 116 | 113 | 111 | 106 | 121 | ||
Around the hull | 118 | 116 | 115 | 112 | 108 | 102 | 94 | 117 | ||
ВДН-21 | 600 | Discharge | 107 | 105 | 106 | 105 | 101 | 96 | 89 | 109 |
Suction | 108 | 103 | 104 | 102 | 99 | 97 | 92 | 107 | ||
Around the hull | 104 | 102 | 101 | 98 | 94 | 88 | 79 | 103 | ||
750 | Discharge | 113 | 111 | 112 | 111 | 107 | 102 | 95 | 115 | |
Suction | 114 | 109 | 110 | 108 | 105 | 103 | 98 | 113 | ||
Around the hull | 110 | 108 | 107 | 104 | 100 | 94 | 85 | 109 | ||
ВВДН-17 | 600 | Discharge | 120 | 125 | 115 | 111 | 107 | 100 | 93 | 119 |
Suction | 117 | 119 | 112 | 109 | 105 | 97 | 91 | 115 | ||
Around the hull | 114 | 115 | 108 | 106 | 101 | 94 | 86 | 111 | ||
ВДН-17 | 750 | Discharge | 105 | 110 | 109 | 106 | 104 | 100 | 94 | 111 |
Suction | 101 | 106 | 105 | 102 | 100 | 96 | 90 | 107 | ||
Around the hull | 96 | 100 | 99 | 96 | 93 | 88 | 82 | 100 | ||
1 000 | Discharge | 112 | 117 | 116 | 113 | 111 | 107 | 101 | 118 | |
Suction | 108 | 113 | 112 | 109 | 107 | 103 | 97 | 114 | ||
Around the hull | 103 | 107 | 106 | 103 | 100 | 95 | 89 | 107 | ||
1 500 | Discharge | 121 | 124 | 129 | 126 | 123 | 118 | 113 | 131 | |
Suction | 117 | 120 | 125 | 122 | 119 | 114 | 109 | 127 | ||
Around the hull | 112 | 115 | 119 | 116 | 112 | 106 | 101 | 120 | ||
ВДН-32Б | 600 | Discharge | 117 | 115 | 116 | 115 | 111 | 105 | 99 | 119 |
Suction | 118 | 113 | 113 | 112 | 109 | 107 | 102 | 117 | ||
Around the hull | 114 | 112 | 111 | 108 | 104 | 98 | 89 | 113 | ||
750 | Discharge | 123 | 121 | 122 | 121 | 117 | 112 | 105 | 125 | |
Suction | 124 | 118 | 119 | 118 | 115 | 113 | 108 | 123 | ||
Around the hull | 119 | 118 | 117 | 114 | 110 | 104 | 95 | 119 | ||
ВДН-12,5 | 1 000 | Discharge | 103 | 107 | 106 | 103 | 101 | 95 | 88 | 108 |
Suction | 99 | 103 | 102 | 99 | 97 | 91 | 84 | 104 | ||
Around the hull | 96 | 99 | 98 | 95 | 92 | 85 | 78 | 99 | ||
1 500 | Discharge | 111 | 114 | 119 | 116 | 113 | 108 | 103 | 121 | |
Suction | 107 | 110 | 115 | 112 | 109 | 104 | 99 | 117 | ||
Around the hull | 102 | 105 | 109 | 106 | 102 | 96 | 91 | 110 | ||
ВДН-8 | 1 000 | Discharge | 86 | 90 | 88 | 85 | 83 | 77 | 70 | 91 |
Suction | 82 | 86 | 84 | 81 | 79 | 73 | 66 | 87 | ||
Around the hull | 77 | 81 | 78 | 75 | 72 | 65 | 58 | 80 | ||
1 500 | Discharge | 94 | 96 | 101 | 98 | 95 | 90 | 85 | 103 | |
Suction | 90 | 92 | 97 | 94 | 91 | 87 | 81 | 99 | ||
Around the hull | 85 | 87 | 91 | 88 | 84 | 78 | 73 | 92 | ||
ВДН-31,5 | 600 | Discharge | 117 | 113 | 110 | 104 | 102 | 94 | 86 | 111 |
Suction | 111 | 110 | 111 | 105 | 101 | 93 | 85 | 111 | ||
Around the hull | 102 | 100 | 100 | 102 | 99 | 91 | 85 | 105 | ||
750 | Discharge | 121 | 121 | 116 | 112 | 108 | 103 | 94 | 118 | |
Suction | 115 | 117 | 116 | 114 | 108 | 101 | 93 | 118 | ||
Around the hull | 109 | 106 | 106 | 107 | 106 | 101 | 92 | 112 | ||
ВДН-18 | 750 | Discharge | 105 | 107 | 105 | 104 | 100 | 95 | 91 | 105 |
Suction | 102 | 103 | 102 | 101 | 97 | 92 | 87 | 105 | ||
Around the hull | 95 | 94 | 92 | 91 | 87 | 84 | 82 | 95 | ||
1 000 | Discharge | 113 | 114 | 112 | 111 | 107 | 102 | 98 | 113 | |
Suction | 109 | 120 | 109 | 108 | 104 | 99 | 94 | 113 | ||
Around the hull | 103 | 103 | 99 | 99 | 97 | 91 | 89 | 103 | ||
ВДН-6,3 | 1 000 | Discharge | 80 | 84 | 91 | 81 | 79 | 80 | 66 | 90 |
Suction | 76 | 80 | 87 | 75 | 74 | 76 | 62 | 86 | ||
Around the hull | 71 | 76 | 82 | 69 | 67 | 67 | 60 | 80 | ||
1 500 | Discharge | 88 | 90 | 95 | 92 | 89 | 84 | 79 | 97 | |
Suction | 84 | 86 | 91 | 88 | 85 | 80 | 75 | 93 | ||
Around the hull | 79 | 81 | 85 | 82 | 78 | 72 | 67 | 86 | ||
ВДН-15 | 750 | Discharge | 101 | 106 | 105 | 102 | 100 | 96 | 90 | 107 |
Suction | 97 | 102 | 101 | 98 | 96 | 92 | 86 | 103 | ||
Around the hull | 92 | 96 | 105 | 92 | 89 | 84 | 78 | 96 | ||
1 000 | Discharge | 108 | 113 | 112 | 109 | 107 | 103 | 97 | 114 | |
Suction | 104 | 109 | 108 | 105 | 103 | 99 | 93 | 110 | ||
Around the hull | 99 | 103 | 102 | 99 | 96 | 91 | 85 | 103 | ||
1 500 | Discharge | 101 | 106 | 105 | 102 | 100 | 96 | 90 | 107 | |
Suction | 97 | 102 | 101 | 98 | 96 | 92 | 86 | 103 | ||
Around the hull | 92 | 96 | 105 | 92 | 89 | 84 | 78 | 96 | ||
ВДН-11,2 | 1 000 | Discharge | 100 | 103 | 102 | 99 | 97 | 91 | 84 | 104 |
Suction | 96 | 100 | 98 | 95 | 93 | 87 | 80 | 100 | ||
Around the hull | 93 | 96 | 94 | 91 | 88 | 81 | 74 | 95 | ||
1 500 | Discharge | 107 | 110 | 115 | 112 | 109 | 104 | 99 | 117 | |
Suction | 103 | 106 | 111 | 108 | 105 | 100 | 93 | 113 | ||
Around the hull | 98 | 101 | 105 | 102 | 98 | 92 | 87 | 106 | ||
ВДН-24 | 600 | Discharge | 110 | 108 | 109 | 108 | 104 | 99 | 92 | 112 |
Suction | 111 | 106 | 107 | 105 | 102 | 100 | 95 | 110 | ||
Around the hull | 107 | 105 | 104 | 101 | 106 | 91 | 82 | 109 | ||
750 | Discharge | 116 | 114 | 115 | 114 | 110 | 105 | 98 | 118 | |
Suction | 117 | 112 | 113 | 111 | 108 | 106 | 101 | 116 | ||
Around the hull | 113 | 111 | 110 | 107 | 112 | 97 | 88 | 115 | ||
ВДН-9 | 1 000 | Discharge | 90 | 94 | 92 | 89 | 87 | 81 | 74 | 94 |
Suction | 86 | 90 | 88 | 85 | 84 | 77 | 70 | 90 | ||
Around the hull | 81 | 84 | 82 | 79 | 76 | 69 | 62 | 83 | ||
1 500 | Discharge | 97 | 100 | 105 | 102 | 99 | 94 | 89 | 107 | |
Suction | 93 | 96 | 101 | 98 | 95 | 90 | 85 | 103 | ||
Around the hull | 88 | 91 | 94 | 91 | 89 | 82 | 77 | 96 |
Machine
size
|
n,
мin??
|
Measurement
range
|
The value of Lpi, dB in the octave band f, Hz |
LpA,
дБА
|
||||||
125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | ||||
ВДН?24?2М | 750 | Ddischarge | 120 | 118 | 119 | 118 | 113 | 108 | 101 | 122 |
Suction | 120 | 115 | 116 | 114 | 111 | 109 | 105 | 119 | ||
Around the hull | 116 | 114 | 113 | 110 | 106 | 100 | 91 | 115 | ||
ВДН?25?2У | 750 | Ddischarge | 121 | 120 | 117 | 118 | 112 | 109 | 107 | 121 |
Suction | 116 | 111 | 111 | 113 | 109 | 106 | 103 | 117 | ||
Around the hull | 115 | 113 | 108 | 108 | 106 | 101 | 96 | 113 | ||
ВДН?25?2 | 750 | Ddischarge | 120 | 119 | 116 | 117 | 113 | 109 | 106 | 121 |
Suction | 115 | 110 | 109 | 111 | 107 | 106 | 108 | 116 | ||
Around the hull | 114 | 113 | 111 | 107 | 105 | 101 | 96 | 113 | ||
1 000 | Ddischarge | 127 | 126 | 123 | 124 | 120 | 116 | 113 | 128 | |
Suction | 122 | 117 | 116 | 118 | 114 | 113 | 108 | 122 | ||
Around the hull | 121 | 120 | 118 | 114 | 112 | 108 | 103 | 120 | ||
ВДН?25?2?II | 750 | Ddischarge | 137 | 131 | 132 | 129 | 125 | 120 | 114 | 134 |
Suction | 128 | 122 | 123 | 122 | 120 | 120 | 116 | 128 | ||
Around the hull | 128 | 123 | 119 | 115 | 114 | 110 | 106 | 122 | ||
ВДН?36?2?Э | 750 | Ddischarge | 134 | 136 | 131 | 126 | 122 | 118 | 107 | 133 |
Suction | 121 | 123 | 122 | 118 | 112 | 109 | 101 | 123 | ||
Around the hull | 112 | 103 | 112 | 109 | 109 | 103 | 92 | 115 |
NOTE: Acoustic characteristics are given for conditions: the axial guide unit is fully open, Bar=760 mm Hg. art., the temperature of the moving medium t=30°C.