JPH04117117A - Air inlet device for outdoor distribution panel - Google Patents

Abstract

PURPOSE:To reduce the dimension of the protruding section of the title panel from the wall surface to which the panel is attached so as to prevent rainwater from getting into the panel by providing a filter covering the air inlet of the panel, gallery which is composed of a plurality of slits and slopes and provided with a clearance between it and the filter, and hood surrounding the gallery. CONSTITUTION:A watertight hood 14 which has a flange 14a and surrounds a filter 3 is provided to the air inlet 2 of the wall surface 1 of the box body or door of a distribution panel. The hood 14 has a protruding dimension H1 and is opened in the horizontal direction. In addition, the hood 14 has a gallery 15 in its body with a clearance between it and the filter 3. The gallery 15 is composed of a plurality of slits and slopes alternately arranged up and down. Two or more pieces of galleries 15 can be provided. At the bottom side of the gallery 15, the outside is inclined downward and drain holes 16 are provided. In addition, downward skirts 17 are respectively formed around the holes 16.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an air intake device for an outdoor type switchboard.

[Conventional technology]

FIG. 2 is a longitudinal sectional view of a conventional example. Two filters 3 are provided at an intake port 2 on a wall l of a box or door of a switchboard, and a hood 4 shaped like a quarter arc centered around the lower side of the filter 3 is attached to prevent rainwater from entering. An opening 4a is provided in the lower surface of the hood 4.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the protrusion dimension Hz of the hood 4 from the wall surface 1 is large, and a plurality of filters 3 are required to prevent inhalation of rainwater rising from the opening 4a.

An object of the present invention is to provide an air intake device for an outdoor power distribution board that has a small protruding dimension H from a wall surface and can reliably prevent rainwater from entering.

Means for Solving Problem C] The inlet device for an outdoor type switchboard according to Invention 1 includes a filter that covers the inlet, and a filter provided with a gap between the filters,
It consists of a gear lary made up of a plurality of slits and slopes, and a hood surrounding the gear lary.

The outdoor type switchboard air intake device according to the second aspect of the present invention is the same as the first aspect, in which the outside of the lower side of the hood is inclined downward and a drain hole is provided.

The outdoor type switchboard air intake device of Invention 3 is the same as Invention 2, in which a skirt is provided to surround the drain hole.

The air intake device for an outdoor type switchboard according to Invention 4 is the one according to Invention 1.2 or 3, in which a plurality of the gear rallies are provided with gaps therebetween.

[Effect]

In invention I, the gear 15 made up of a plurality of slits and slopes becomes thinner as the number increases to prevent rainwater from entering.
Even if the hood 14 surrounding this is opened horizontally, the protrusion dimension H is small.

In the second invention, the lower side 14b of the hood 14, which is provided with the drain hole 16 and slopes downward, effectively drains water droplets passing through the filter, and prevents water adhering to the filter 3 from entering through the intake port 2.

In invention 3, the skirt 17 surrounds the drain hole 16 to prevent wind, so that drainage from the drain hole is not obstructed.

In invention 4, the waterproof effect of the gear increases with the number of gears,
You can make the filter thinner.

Embodiment C] FIG. 1 is a longitudinal cross-sectional view of the embodiment, and the same reference numerals as in the conventional example have approximately the same functions.

In the figure, a hood 14 having a flange 14a and surrounding a filter 3 is disposed on an air intake port 2 of a wall surface 1 of a box or door of a switchboard. The hood 14 has a protruding dimension H3, opens in the horizontal direction, and has a gear rally 15 inside thereof with a gap between the filter 3 and the filter 3.

The gear gallery 15 has a plurality of horizontally running slits and a plurality of slopes arranged vertically alternately. Two or more gears 15 may be provided.

Further, the outer side of the lower side 15b of the gear rally 15 is inclined downward,
A drain hole 16 is provided, and a downward skirt 17 is formed surrounding the drain hole 16.

According to this structure, the gear lary 15, which is made up of a plurality of slits and slopes, becomes thinner as the number increases and prevents rainwater from entering, and the hood 14 surrounding the gear lary has a small protrusion dimension H+ even if it is opened horizontally. Become.

The lower side 14b of the hood 14, which is provided with the water drainer 6 and slopes downward, effectively drains water droplets flowing through the filter, and prevents water adhering to the filter 3 from entering through the intake port 2. Furthermore, the skirt 17 surrounds the drain hole 16 to prevent wind, so drainage from the drain hole is not obstructed, and the waterproof effect of the gear can be increased by increasing the number of filters, allowing the filter to be made thinner.

〔Effect of the invention〕

The inlet device for an outdoor type switchboard of this group of inventions consists of a filter that covers the inlet, a geararry consisting of a plurality of slits and slopes provided at intervals in the filter, and a hood surrounding the geararry. As the number of slits increases, the gear lary becomes thinner and the protruding dimension of the hood surrounding it becomes smaller.

The lower part of the hood with a drain hole drains water well and drains the filter well, increasing the waterproof effect.The skirt has a windshield function that also helps drain water from the drain hole, and if you increase the number of gears. This has the effect of reducing the thickness of the filter.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the embodiment, and FIG. 2 is a longitudinal sectional view of the conventional example. 2...Intake port, 3...Filter, 4.14...Hood, 15...Geararly, 16...Drain hole, 17
...Skirt, H+, Hz...Protrusion dimensions.

Claims (1)

[Claims] 1) A filter that covers the intake port, a gallery that is provided with a plurality of slits and slopes at intervals in the filter, and a hood that surrounds the gallery. Outdoor type switchboard air intake device. 2) The inlet device for an outdoor type power distribution board according to claim 1, wherein the outer side of the lower side of the hood is inclined downward to provide a drain hole. 3) The inlet device for an outdoor type power distribution board according to claim 2, further comprising a skirt surrounding the drain hole. 4) The inlet device for an outdoor type power distribution board according to claim 1, 2 or 3, wherein a plurality of the galleries are provided with gaps therebetween.