Double-layer ventilation anti-condensation shutter structure of switch cabinet shell

Abstract

The utility model discloses a double -deck ventilation anti -condensation louver structure of switch cabinet shell belongs to switch cabinet auxiliary structure technical field. It is in overcoming existing single -deck louver ventilation and anti -condensation difficult to give both sides of the defect. It includes installation frame, inner layer louver body and outer layer louver body, and inner layer louver body is installed in the inboard of installation frame and has the inner layer leaf piece that inclines along the first direction, and outer layer louver body is installed in the outboard and has the outer layer leaf piece that inclines along the second direction, and the inner and outer layer leaf piece staggered cooperation forms zigzag ventilation channel. Installation frame is rectangle and is equipped with mounting hole in the circumference side, and the inclination angle of inner and outer layer leaf piece is different, and the frame is fixed with installation frame, and the leaf piece gap is 5 15mm. The structure can guarantee air circulation heat dissipation, and prolongs the condensation access path and the shielding, and blocks the condensation invasion, and guarantees the electrical component dry operation in switch cabinet, and prolongs the service life of equipment.

Description

Technical Field

[0001] This utility model provides an anti-condensation louver structure, and particularly relates to a double-layer ventilation anti-condensation louver structure for a switch cabinet housing. Background Technology

[0002] Ventilation louvers on the switchgear enclosure are important auxiliary structures installed on the wall of the switchgear enclosure. Their main function is to allow air circulation between the inside and outside of the switchgear, and to remove the heat generated by the operation of the electrical components inside the cabinet through air exchange, so as to prevent the temperature inside the cabinet from being too high and affecting the normal operation of the equipment. At the same time, they need to block dust, moisture and condensation from the external environment from entering the cabinet during ventilation, so as to protect the internal electrical components from corrosion and ensure the operational stability and service life of the switchgear.

[0003] In existing technologies, ventilation louvers for switchgear housings mostly adopt a single-layer louver structure. The basic structure typically includes a mounting frame fixed to the cabinet wall and a single layer of louvers within the frame. The louvers extend obliquely in a single direction and are distributed parallel to each other at intervals. This type of structure has significant drawbacks: because it only uses a single layer of louvers, the resulting ventilation path is relatively straight. When condensation exists in the external environment, the condensation can easily pass directly through the gaps between the louvers with the airflow into the cabinet, or slide down the surface of the louvers under gravity into the cabinet, causing internal electrical components to become damp. If the gaps between the louvers are reduced to enhance the anti-condensation effect, the ventilation efficiency will be significantly reduced. It is difficult to simultaneously achieve good ventilation performance and anti-condensation effect, failing to meet the stringent requirements of switchgear for the operating environment. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing single-layer ventilation louvers for switch cabinets, which cannot simultaneously achieve both ventilation performance and anti-condensation effect. It provides a double-layer ventilation and anti-condensation louver structure for switch cabinet housings. Through the design of double-layer staggered louvers, ventilation efficiency is ensured while effectively preventing condensation from entering the cabinet.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a double-layer ventilation and anti-condensation louver structure for a switch cabinet housing, comprising a mounting frame for installation on the switch cabinet housing, an inner louver body installed inside the mounting frame, and an outer louver body installed outside the mounting frame; the inner louver body has a plurality of inner slats extending obliquely along a first direction and arranged parallel to each other at intervals, and the outer louver body has a plurality of outer slats extending obliquely along a second direction and arranged parallel to each other at intervals; the inner slats and the outer slats are staggered, allowing air to circulate through the tortuous channel formed by the gaps between the inner and outer slats, and preventing condensation from directly entering the switch cabinet housing.

[0006] Furthermore, the mounting frame is a rectangular frame, and its periphery is provided with several mounting holes for fixing the mounting frame to the wall of the switch cabinet housing using fasteners; the inclination direction of the inner layer louvers forms a first angle with the horizontal direction, and the inclination direction of the outer layer louvers forms a second angle with the horizontal direction, and the first angle and the second angle are of different sizes, so that the inner layer louvers and the outer layer louvers spatially overlap and cooperate with each other; the inner layer louver body is connected to the mounting frame by snap-fit ​​or screws, and the frame of the inner layer louver body is fitted and fixed to the inner sidewall of the mounting frame; the outer layer louver... The body is connected to the mounting frame by snap-fit ​​or screws, and the frame of the outer louver body is fixed to the outer side wall of the mounting frame; the inner louver is a long strip-shaped rod, and the gap between two adjacent inner louvers is 5-15mm; the outer louver is a long strip-shaped plate adapted to the inner louver, and the gap between two adjacent outer louvers is 10-15mm; the cross-sections of the inner and outer louvers are both inclined rectangles, and the inclination direction of the inner louver and the inclination direction of the outer louver form an opposing blocking structure to extend the path of condensation entry.

[0007] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0008] The beneficial effects of this utility model are as follows: By setting up double-layered staggered louvers, the inner and outer louvers are tilted in different directions to form a tortuous ventilation channel, which not only ensures smooth airflow for good heat dissipation, but also effectively prevents condensation from directly entering the switch cabinet housing by extending the condensation entry path and using spatial shielding; the mounting hole design on the periphery of the mounting frame facilitates stable installation, and the close-fitting fixing method between the inner and outer louvers and the mounting frame ensures the stability of the overall structure; the gap size between the inner and outer louvers further improves the anti-condensation performance while meeting ventilation requirements, solving the problem that existing single-layer louvers cannot simultaneously achieve ventilation and anti-condensation, ensuring a dry operating environment for electrical components inside the switch cabinet, and extending the service life of the equipment.

[0009] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of a double-layer ventilation and anti-condensation louver structure for a switch cabinet housing according to the present invention.

[0011] Figure 2 This is an exploded view of a double-layer ventilation and anti-condensation louver structure for a switch cabinet housing according to this utility model.

[0012] Figure 3 This is a cross-sectional view of a double-layer ventilation and anti-condensation louver structure for a switch cabinet housing according to this utility model.

[0013] As shown in the figure:

[0014] 1. Installation frame; 2. Inner venetian blinds; 3. Outer venetian blinds; 4. Inner leaflets; 5. Outer leaflets. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] like Figure 1-3As shown, this utility model discloses a double-layer ventilation and anti-condensation louver structure for a switch cabinet housing, comprising a mounting frame 1, an inner louver body 2, and an outer louver body 3. The mounting frame 1 is a rectangular frame made of metal, with eight mounting holes evenly distributed around its perimeter. During installation, bolts are passed through the mounting holes to fix the mounting frame 1 to the ventilation opening wall of the switch cabinet housing. The inner louver body 2 is installed on the inner side of the mounting frame 1 via a snap-fit ​​connection, with its frame tightly fitted to the inner wall of the mounting frame 1. The inner louver blades 4 on the inner louver body 2 are long strip-shaped metal rods, with several inner louver blades 4 extending obliquely from the upper left to the lower right, forming a first angle of 30° with the horizontal direction, and the gap width between two adjacent inner louver blades 4 is 10mm. The outer louver 3 is installed on the outside of the mounting frame 1 by screw connection, and its frame is tightly fitted to the outer wall of the mounting frame 1. The outer slats 5 on the outer louver 3 are long strip-shaped metal plates that are adapted to the inner slats 4. Several outer slats 5 extend obliquely from the upper right to the lower left, forming a second angle of 45° with the horizontal direction, and the gap width between two adjacent outer slats 5 is 12mm. The cross-section of both the inner slats 4 and the outer slats 5 is rectangular, and the two are staggered to form a tortuous ventilation channel.

[0019] When this device is in operation, outside air first enters through the gaps between the outer slats 5 on the outer louver body 3, flows along the inclined direction of the outer slats 5 to the interlaced area formed by the inner slats 4 and the outer slats 5, then passes through the tortuous channel formed by the gaps between the inner slats 4 and the outer slats 5, and finally enters the switch cabinet housing through the gaps between the inner slats 4, realizing air exchange and heat dissipation between the inside and outside of the cabinet. During this process, the interlaced inner slats 4 and outer slats 5 form an opposing shielding structure, which prolongs the condensation entry path. Under the action of gravity, the condensation will drip down along the surface of the slats to the outside, preventing it from directly entering the cabinet, thus achieving both good ventilation performance and anti-condensation effect.

[0020] When installing and using this device, ventilation openings must first be pre-drilled on the metal cabinet wall of the switchgear. Holes are then drilled around the ventilation openings to correspond to the mounting holes of the mounting frame. The mounting frame is made of 1.5mm thick cold-rolled steel plate. M5 countersunk head bolts are used as fasteners when connecting it to the switchgear housing. After the bolts pass through the mounting holes, they are tightened in conjunction with the pre-embedded nuts on the cabinet wall. Simultaneously, 8mm wide EPDM rubber sealing strips are laid at the contact points between the inner and outer louver frames and the mounting frame to enhance sealing performance. The frames of the inner and outer louvers are made of AB... The S-type engineering plastic is injection molded, and the inner layer is made of 2mm thick galvanized steel sheet, while the outer layer is made of 1.8mm thick aluminum alloy sheet. During installation, a tape measure can be used to measure the installation position of the mounting frame and a level can be used to calibrate its levelness. If there are many heating elements in the switch cabinet, a small axial flow fan can be added to the inside of the corresponding louver structure to promote air circulation. When using the snap-fit ​​connection, the matching nylon plastic snap-fit ​​assembly is used to snap and fix the louver body to the mounting frame. These existing technologies are used in conjunction with this device to ensure the stable operation of the entire ventilation and anti-condensation system.

[0021] Specifically, in the implementation of this solution, before installation, the dimensions of the switch cabinet housing ventilation openings and their compatibility with the mounting frame must be accurately measured with a tape measure. The corresponding positions of the mounting holes should be marked around the ventilation openings with a marker. When drilling, a drill bit matching the fastener specifications should be selected. After the mounting frame is fitted against the cabinet wall, its levelness should be checked with a level. If there is any deviation, it can be fine-tuned by inserting thin metal shims at the bottom or side of the mounting frame. During bolt tightening, a torque wrench should be used to control the torque at 8-10 N•m to ensure a secure connection and prevent frame deformation. When using snap-fit ​​connections for the louvers, the female snap-fit ​​components should first be pre-installed on the louver frame, and then the female snap-fit ​​components should be correspondingly fixed to the mounting frame. After aligning the louver with the slot, gently tap the frame of the louver with a rubber mallet to secure it in place. To improve the intelligent ventilation effect, a temperature sensor can be installed inside the switch cabinet and connected to the fan controller inside the cabinet. When the temperature inside the cabinet exceeds the preset threshold, the controller automatically starts the axial flow fan to accelerate air circulation, and automatically shuts off when the temperature is below the threshold. During routine maintenance, use a compressed air spray gun regularly to blow dust from the outside of the outer louver to the inside. For stubborn stains, use a soft brush dipped in neutral detergent to gently wipe the surface of the louvers. After wiping, dry the louvers with a dry cloth to prevent corrosion. The combined use of these existing technologies further ensures the long-term stable operation and effectiveness of this device.

[0022] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A double-layer ventilation and anti-condensation louver structure for a switch cabinet housing, characterized in that, It includes a mounting frame (1) for mounting on a switch cabinet housing, an inner louver (2) mounted inside the mounting frame (1), and an outer louver (3) mounted outside the mounting frame (1). The inner louver (2) has a number of inner slats (4) that extend obliquely along a first direction and are spaced parallel to each other. The outer louver (3) has several outer leaflets (5) that extend obliquely along the second direction and are arranged parallel to each other at intervals; the inner leaflets (4) and the outer leaflets (5) are staggered and matched, so that air can flow through the tortuous channel formed by the gaps between the inner leaflets (4) and the gaps between the outer leaflets (5), and can prevent condensation from directly entering the switch cabinet housing.

2. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The mounting frame (1) is a rectangular frame, and the mounting frame (1) has several mounting holes on its periphery for fixing the mounting frame (1) to the wall of the switch cabinet housing by fasteners.

3. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The inner layer sheet (4) is tilted at a first angle to the horizontal direction, and the outer layer sheet (5) is tilted at a second angle to the horizontal direction. The first angle and the second angle are different in size, so that the inner layer sheet (4) and the outer layer sheet (5) mutually cover and cooperate in space.

4. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The inner louver (2) is connected to the mounting frame (1) by a snap-fit ​​or screw connection, and the frame of the inner louver (2) is fitted and fixed to the inner sidewall of the mounting frame (1).

5. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The outer louver (3) is connected to the mounting frame (1) by a snap-fit ​​or screw connection, and the frame of the outer louver (3) is fitted and fixed to the outer side wall of the mounting frame (1).

6. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The inner layer sheet (4) is a long strip rod, and the gap width between two adjacent inner layer sheets (4) is 5-15mm; the outer layer sheet (5) is a long strip plate adapted to the inner layer sheet (4), and the gap width between two adjacent outer layer sheets (5) is 10-15mm.

7. The double-layer ventilation and anti-condensation louver structure of the switch cabinet housing according to claim 1, characterized in that, The cross-sections of the inner layer sheet (4) and the outer layer sheet (5) are both rectangular with an inclined orientation, and the inclination direction of the inner layer sheet (4) and the inclination direction of the outer layer sheet (5) form a structure that blocks each other to extend the path for condensation to enter.

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