CN2282760Y

CN2282760Y - Outdoor electronic equipment ventilation structure

Info

Publication number: CN2282760Y
Application number: CN 96237389
Authority: CN
Inventors: 吴智泉
Original assignee: Shenzhen Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 1996-08-26
Filing date: 1996-08-26
Publication date: 1998-05-27
Anticipated expiration: 2006-08-26

Abstract

The utility model relates to a ventilation water-proof structure for outdoor electronic equipment. Using a common solar radiation-resistant sandwich structure of outdoor electronic equipment, a gas and water separating channel is formed by an inner and an outer walls of the sandwich structure. A transom is arranged on the outer wall. Air inlet holes are arranged on the inner wall. A bottom wall is provided with a discharge hole. The transom can be a shutter which has a certain decorative function and large open degree, or array holes directly arranged on the outer wall. The relative position of the transom and the air inlet hole is required to be staggered. The air inlet hole can be direct impact type array holes or row-holes with upper opaque. The ventilation water-proof structure for outdoor electronic equipment can realize a 5 grade water-proofing function of IEC529 and obtain enough large quantity of gas flow simultaneously.

Description

A kind of aeration structure of outdoor type electronic equipment

The utility model relates to the ventilation waterproof structure of outdoor type electronic equipment.

Usually, the outdoor type electronic equipment adopts the shutter of different structure to reach ventilation and heat and rainproof purpose.This is because rainwater has certain directivity---in less zenith angle scope, concentrated most rainfall, so utilize tilting blade just can block the rainwater of inclination from top to bottom, simultaneously ventilation is opened wide in its underpart, but this structure does not have desirable barrier effect to the sputter stream of " from bottom to top ".So produced the various distressed structures of shutter, for example adopted wrong row's formula, tail to stick up structures such as formula, curve-shaped leaf.Though this class formation can be realized anti-sputter function to a certain extent, they are to be cost with the degree of opening wide of sacrificing runner bar none, and low pressure stream is not had enough barrier effects.For example, Fig. 7 a is depicted as the shutter that a kind of existing outdoor type telecommunications equipment cabinet adopts, open wide than only being 24% (open wide ratio=cross section of fluid channel long-pending/structural table area that runner takies), not only vent flow is very limited, and the water-proof function imperfection, waterproof ability only reaches 3 grades of anti-water quality standards of the IEC529 of International Electrotechnical Commission.This shows that traditional louvre ventilation structure is not suitable for waterproof requirement strictness, high, the expensive outdoor type electronic equipment of security of system requirement.

For this reason; purpose of the present invention promptly is for solving the contradiction that existing existing ventilation of outdoor type aeration structure and waterproof can not well be taken into account; providing a kind of can obtain big flow and ventilate and can stop the low angle sputter fully again; the ventilation waterproof structure of the outdoor type electronic communication equipment that injection water enters; make communication equipment better adapt to outdoor environment and prevent contingent or artificial destruction to the harm that equipment may cause, guarantee the fail safe of outdoor type communication equipment.

For achieving the above object, this novel aeration structure utilizes the common solar radiation protection sandwich of outdoor type electronic equipment, and the gas channel of inside and outside wall structure by this sandwich has transom window on the outer wall, have air admission hole on the inwall, and diapire has discharge orifice.Wherein said transom window can be one and only have the shutter of degree of opening wide greatly of certain decoration functions or the array hole of directly opening on outer wall.The relative position of described transom window and described air admission hole need misplace and arrange to form a dislocation spacer interlayer, the flow channel length (L) of this dislocation spacer interlayer should be not less than 8 with the ratio of thickness of interlayer (W), described air admission hole can be the Washdown type array hole, or is a kind of round that upper drip cap is arranged.Described discharge orifice is opened in the diapire lowest part, can be one or more.

By said structure of the present utility model as seen, for common direct-insert shutter, air-water mixture enters the interlayer runner along this runner by the outside through the outer wall air intake window, and it is inner rather than directly enter to enter rack through the inwall air admission hole again.The flow process flow resistance of interlayer runner and the current limliting flow resistance of inwall air admission hole have been increased therefrom, but when double wall is opened wide, because flow section is big, flow velocity is low, the increase of flow process flow resistance is limited, simultaneously, by increasing the perforate quantity of inwall air admission hole, strengthen perforated area and can show the air inlet flow resistance that reduces the inwall air admission hole; And aspect outer wall air intake window air inlet flow resistance, need consider its rainproof function hardly during owing to the design shutter, promptly it is opened wide than restricted hardly, so there are very big potentiality that the air inlet flow resistance is reduced significantly.The result of comprehensive function makes overall ventilation flow resistance can not be significantly increased, and suitable design also can make flow significantly increase.In a word, the advantage of the utility model said structure and effect are exactly to have solved the contradiction of traditional structure on ventilation and waterproof requirement by this simple structural design, change traditional blocking type passive-type waterproof into active waterproof that importing earlier then separates, can in 5 grades of water-proof functions realizing IEC529, obtain enough big throughput.

Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail.Identical or corresponding component is represented with identical or corresponding label in each accompanying drawing.

Fig. 1 is the schematic diagram of the utility model outdoor type electronic equipment ventilation waterproof structure;

Fig. 2 and Fig. 3 are the longitudinal sectional views of two kinds of placement schemes of the air intake window of explanation the utility model structure and inwall air admission hole relative position;

Fig. 4 is the round structural representation of a kind of tool penthouse of the present utility model;

Fig. 5 a, 5b and 5c are respectively front view, vertical view and the rearviews of using an embodiment product rack of the utility model structure;

Fig. 6 is a gas-water separation principle schematic embodiment illustrated in fig. 5;

Fig. 7 a is a kind of shutter longitudinal sectional view of outdoor type communication equipment of routine;

Fig. 7 b is the longitudinal sectional view of the shutter of a kind of degree of opening wide greatly embodiment illustrated in fig. 5;

Referring to Fig. 1, this illustrates the principle of the utility model structure.As known in the figure, the utility model utilizes gas channel of traditional radiation-resistant sandwich construction, air-water mixture MAW enters the interlayer runner by the outside through outer wall air intake window 1, be subjected to head on stopping of inwall 2 and alter course, water Wa is under action of gravity, flow downward and discharge through bottom discharge orifice 3, air current A i is then via the air admission hole on the inwall 4 or stream through periphery and enter, thereby realizes gas-water separation.

Fig. 2 illustrates and places structural arrangements on the outer wall air intake window 1, this configuration to have best waterproof ability inwall air admission hole 4.Wherein L represents the length of dislocation spacer between transom window and the air admission hole, and W represents the thickness of sandwich.Fig. 3 illustrates inwall air admission hole 4 and places situation under the outer wall air intake window 1, and this structurally waterproof performance is poor slightly, but can adopt the air inlet structure of band upper drip cap shown in Figure 4 to be improved.

Fig. 5 a, 5b and 5c show an embodiment product rack of the present utility model respectively each to view, this embodiment is the example with a kind of outdoor type equipment of the utility model structure applications on the optical fiber communication Access Network, by these figure as seen, the rack front portion of this equipment, rear portion and three places, right side have used gas-water separation formula structure of the present utility model.Shown in Fig. 5 a and 5b, this Door of communication apparatus cabinet top offered one open wide greatly than shutter 501, air-water mixture shutter thus enters, bump inwall and altering course, descending along sandwich passage, through inwall air admission hole access arrangement lumen, the water after the separation is discharged rack by the bottom discharge orifice, and this shutter air intake ability is: reach 5.24 meters during flow velocity 2 meter per seconds ³/ minute.Two groups of alternating expression air intake structures have also been adopted in the front portion in east power chamber.When this shutter air intake ability is single window, flow velocity 2 meter per seconds, reach 1.19 meters ³/ minute.As Fig. 5 c and shown in Figure 6, the rack rear upper end adopts array cellular type air intake window, and air-water mixture is realized separating in the mode at similar Qianmen, and water is discharged by the bottom side opening, and the air intake ability of this air intake window is: be 4.07 meters during flow velocity 2 meter per seconds ³/ minute.Air-flow enters lumen and Qianmen air inlet and converges uply, with the cooling circuit unit, discharges rack via the ventilating fan of epicoele rear wall at last.

Fig. 7 b illustrates the shutter of present embodiment.The shutter of present embodiment is opened wide than reaching 50%, and than opening wide than big about a times of original same category of device 24% shown in Fig. 7 a, and the air-flow turning angle is less, and fluency is better, can realize better splashproof, the anti-spraying function simultaneously.

Need to prove: the utility model structure is applicable to the drawing-in type structure, is mainly used in air inlet, but also can be used for exhaust.Blow type is flowed this structure and free convection has bigger flow resistance, and barrier utilizes this characteristic preferably, and the system that can realize is simply switched by the stream of ventilation operating mode to enclosed refrigeration/heating cycle.

Claims

1, a kind of ventilation waterproof structure of outdoor type electric equipment, comprise the sandwich of forming by inwall, outer wall and diapire, with the air intake window that has on the described outer wall, it is characterized in that: have the air admission hole of not only ventilating air but also waterproof with the described air intake window a distance of staggering on the described inwall, to form a dislocation spacer interlayer; And described diapire has the discharge orifice that is used for draining.

2, ventilation waterproof structure according to claim 1 is characterized in that described transom window adopts to open wide than the shutter or the array hole that are 40～80%.

3, ventilation waterproof structure according to claim 1 is characterized in that described transom window is below described pore.

4, ventilation waterproof structure according to claim 2 is characterized in that opening wide than being 50% of described transom window.

5, ventilation waterproof structure according to claim 2 is characterized in that described pore is below described transom window.

6, ventilation waterproof structure according to claim 5 is characterized in that: the ratio (L/W) of described dislocation spacer interlayer flow channel length (L) and thickness of interlayer (W) about 〉=8.

7, ventilation waterproof structure according to claim 6 is characterized in that described pore is dislocation arrangement.

8, according to 1,2, the described ventilation waterproof structure of the arbitrary claim of 4-7 is characterized in that described pore is the round of Washdown type array hole or band upper drip cap.

9, according to the described ventilation waterproof structure of the arbitrary claim of 1-7, it is characterized in that described discharge orifice is one or more, described diapire is provided with the runner that leads to this discharge orifice and be higher than this discharge orifice.