Architectural return air grilles double deflection grille for ventilation system
1. Double deflection grille description
Air grilles are widely used in HVAC ventilation system as the air supply or air return grilles. With adjustable blades, it is easier to adjust the air flow direction according to the practical needs. It has one layer grille and double layers grille.
Single deflection air grille can adjust up and down of the air direction. Return air outlet can be used with filter. The blade angle can be adjusted.
Double deflection air grille is usually used as air supply outlet and also can be used directly with fan coil unit. It is widely used in central air conditioning terminal equipment. Double deflection air grille also can be used with multi-blade opposed air damper used for adjusting the air volume .
2.Double deflection grille features:
Material: Aluminum, thickness 1.0mm
Features:
| 1.DDG air grille is made up of two sets of air blades, vertical set in front and the horizontal set behind. |
| 2. The blade can be adjusted in any direction between o~180 degree. With the adjustment of different angle of the blade, you can get different reach distance and diffusion angle. |
| 3. It is generally used for supply air or return air. |
Accessories: Oppose Blade Damper optional
Installing: Mounting by screws or spring clips.
3.Double deflection grille adhibition
1).Widely used in air conditioning system as air outlet, according to the requirements, the air outlet can be prepared behind the aluminum air flow control valve (Hue word gate), double louver air outlet with two layers of vertical pages to adjust the horizontal and vertical page angle, adjust Air diffuser surface, to change the range, the air outlet frame width has two kinds of wide frame and narrow frame, can be used for special requirements of the ventilation system.
2). Usually installed on the pipe or side wall as a side air outlet. The double louver air outlet has two movable blades with adjustable angle. The short blades are used to adjust the spread angle of the air supply air, and can also be used to change the direction of air flow; The blades can make the supply air flow attached to the ceiling or tilt down at a certain angle (when heating the air). The outer blades of a double shutter air outlet or the blades of a single louver air outlet can be parallel to the long side or parallel to the short side , can choose according to the customer's request.
4. Standard Model Technology Parameter
| Size(mm) | 100x100 | 100x150 | 100x200
150x150 | 100x250 | 100x100 | 100x100 |
The wind speed of neck
m/s | Angle of blow | Air supply | Air return | · Air Volume m/h | Reach the distance m | · Air flow m/h | Reach the distance m | · Air flow m/h | Reach the distance m | · Air flow m/h | Reach the distance m | · Air flow m/h | Reach the distance m | · Air flow m/h | Reach the distance m |
| | · static pressure loss | | · static pressure loss |
| 1 | A
B
C
D | 0.11
0.17
0.21
0.28 | 0.05
0.11
0.15
0.22 | 0.07 | 0.13 | 36 | 1.05
0.87
0.67
0.42 | 55 | 1.28
1.06
0.81
0.51 | 70 | 1.49
1.23
0.94
0.59 | 90 | 1.66
1.37
1.05
0.64 | 110 | 1.81
1.50
1.15
0.72 | 125 | 1.96
1.62
1.24
0.78 |
| 2 | A
B
C
D | 0.44
0.67
0.85
1.11 | 0.20
0.43
0.61
0.87 | 0.29 | 0.54 | 72 | 1.77
1.47
1.20
0.72 | 110 | 2.17
1.79
1.46
0.88 | 140 | 2.51
2.08
1.70
1.02 | 180 | 2.79
2.30
1.89
1.14 | 220 | 3.06
2.54
2.07
1.25 | 250 | 3.31
2.74
2.24
1.35 |
| 3 | A
B
C
D | 0.99
1.52
1.90
2.49 | 0.44
0.97
1.35
1.94 | 0.67 | 1.22 | 1.08 | 2.34
1.86
1.60
0.98 | 165 | 2.86
2.28
1.96
1.20 | 210 | 3.31
2.64
2.27
1.39 | 270 | 3.68
2.94
2.53
1.55 | 330 | 4.04
3.22
2.77
1.70 | 375 | 4.37
3.48
3.00
1.84 |
| 4 | A
B
C
D | 1.76
2.70
3.38
4.43 | 0.78
1.72
2.40
3.45 | 1.18 | 2.16 | 1.44 | 2.69
2.20
1.83
0.18 | 220 | 3.28
2.69
2.24
1.44 | 280 | 3.81
3.12
2.59
1.66 | 360 | 4.26
3.47
2.88
1.85 | 440 | 4.46
3.80
3.16
2.03 | 500 | 5.02
4.11
3.42
2.19 |
| 5 | A
B
C
D | 2.75
4.21
5.28
6.92 | 1.22
2.68
3.75
5.39 | 1.85 | 3.38 | 1.80 | 2.94
2.54
2.03
1.33 | 275 | 3.59
3.11
2.48
1.63 | 350 | 4.16
3.60
2.88
1.89 | 450 | 4.63
4.01
3.20
2.10 | 550 | 5.07
4.39
3.51
2.30 | 625 | 5.49
4.75
3.80
2.49 |
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Architectural Metal Return Air Grille Double Deflection For Ventilation System Images
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