A ventilating cover capable of increasing a ventilating area

Abstract

The utility model discloses a ventilation hood that can increase ventilation area, comprising ventilation door cover with ventilation hole and bending net plate with mesh, the ventilation door cover is composed of ventilation plate and the mounting support of setting on the back side edge of ventilation plate, the ventilation hole is arrayed on the ventilation plate, the bending net plate sets up on the back of ventilation plate and forms the closed cavity for air exchange space transition between both. The utility model can increase the ventilation area of upper cover ventilation plate, increase the in and out ventilation of low voltage switchgear body, strengthen air circulation, can realize higher ventilation heat dissipation effect, and plays a good role in guaranteeing the conductor temperature rise in the cabinet to reach the standard, and the whole cabinet can also guarantee the protection level.

Claims

1. A ventilation hood that can increase the ventilation area, characterized in that: The device includes a ventilation hood with ventilation holes and a bent mesh plate with mesh. The ventilation hood consists of a ventilation plate and a mounting bracket disposed on the back side of the ventilation plate. The ventilation holes are arranged in an array on the ventilation plate. The bent mesh plate is disposed on the back side of the ventilation plate and forms a closed cavity between the two for the transition of air exchange space.

2. The ventilation hood with increased ventilation area according to claim 1, characterized in that: The aperture of the mesh in the bent mesh plate does not exceed 2.5mm.

3. The ventilation hood with increased ventilation area according to claim 2, characterized in that: The ventilation panel has folded edges around its perimeter and its surface is flat, while the bent mesh panel is grooved.

4. The ventilation hood with increased ventilation area according to claim 3, characterized in that: The bent mesh plate consists of a perforated plate with folded edges on both sides and a pair of long strip-shaped support members connected to the other opposite sides of the perforated plate. The folded edges and support members are welded to the ventilation plate to connect the ventilation cover and the bent mesh plate.

5. The ventilation hood with increased ventilation area according to claim 4, characterized in that: The support member is in the shape of a Z-shaped folded plate, with its front folded edge welded to the ventilation plate and its rear folded edge welded to the mesh plate. The middle part of the two folded edges of the support member has stepped cut edges at both ends, and the inner side of the cut edges is a butt weld edge welded to the side edge of the mesh plate.

6. The ventilation hood with increased ventilation area according to claim 5, characterized in that: The mounting bracket is a double-folded groove-shaped component. One side of the bracket is stamped with a modular hole that serves as a mounting hole for fixing the cabinet frame. The bottom surface of the groove has a hole for fixing the ventilation door cover. The holes are symmetrically distributed vertically to accommodate installation on both the left and right sides.

7. The ventilation hood with increased ventilation area according to claim 6, characterized in that: Pull-up recesses for fixing mounting brackets are punched on both sides of the ventilation plate.

8. The ventilation hood with increased ventilation area according to claim 7, characterized in that: The ventilation holes are formed by stamping on the ventilation plate.

9. The ventilation hood with increased ventilation area according to claim 8, characterized in that: The ventilation holes are honeycomb holes, strip-shaped holes, or waist-shaped holes.

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