Shutter and cabinet

Abstract

The invention relates to the technical field of equipment cabinet bodies, in particular to a louver and a cabinet, the louver comprises a window frame and blades arranged on the window frame, each blade is provided with an inner end facing the inside of the cabinet and an outer end facing the outside of the cabinet, an airflow channel is formed between every two adjacent blades, and the blades are arranged in the airflow channel. The inner ends of every two adjacent blades define an inner channel opening, used for penetrating through the inner space of the cabinet, of the airflow channel, the outer ends of every two adjacent blades define an outer channel opening of the airflow channel, and the gap between the inner ends of every two adjacent blades is smaller than the gap between the outer ends of every two adjacent blades so that the inner channel opening can be smaller than the outer channel opening, and the flow speed of the inner channel opening can be increased. And air in the cabinet can be driven to quickly flow outwards by utilizing the relatively high air flow speed at the opening of the inner channel, so that the heat dissipation effect can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment cabinets, and in particular to a shutter and a cabinet. Background Art

[0002] For outdoor cabinets such as charging piles and box-type substations, shutters are usually installed on the sides of the cabinet to dissipate the heat generated by the electrical components in the cabinet during operation. This serves to ventilate and dissipate heat while preventing external rain and dust from entering the cabinet.

[0003] The basic structure of the shutter can be seen in a ventilation shutter and a cabinet using the ventilation shutter disclosed in the Chinese utility model patent with authorization announcement number CN206299317U. The shutter includes a window frame and a plurality of blades arranged at intervals along the upper and lower directions. The blades are arranged at an angle, and an inclined airflow channel with a higher inner side and a lower outer side is formed between adjacent blades. The airflow channel has an inner channel opening facing the inside of the cabinet and connecting with the internal space of the cabinet, and an outer channel opening facing the outside of the cabinet and connecting with the atmosphere outside the cabinet.

[0004] In the conventional shutter structure described above, the inner and outer openings of the air flow channel are the same size. The ventilation and heat dissipation of the cabinet only relies on the internal and external pressure difference caused by the high temperature inside the cabinet to realize the flow of hot air from the inside of the cabinet to the outside of the cabinet, and the heat dissipation efficiency is low. Summary of the Invention

[0005] The object of the present invention is to provide a shutter to solve the problem of low heat dissipation efficiency of current shutters; the object of the present invention is also to provide a cabinet to solve the problem of low heat dissipation efficiency of current cabinet shutters.

[0006] The technical solution of the shutter of the present invention is: A Venetian blind comprises a window frame and blades arranged on the window frame, wherein the blades have inner ends facing inside a cabinet and outer ends facing outside the cabinet, an air flow channel is formed between two adjacent blades, the inner ends of the two adjacent blades form an inner channel opening of the air flow channel for passing through the interior space of the cabinet, and the outer ends of the two adjacent blades form an outer channel opening of the air flow channel, and the gap between the inner ends of the two adjacent blades is smaller than the gap between the outer ends so that the inner channel opening is smaller than the outer channel opening.

[0007] Furthermore, the inner end of the blade is provided with an upward inner turning edge, and the inner turning edge of the lower blade and the inner end of the upper blade of the upper adjacent blades are used to enclose the inner channel opening.

[0008] Furthermore, the outer end of the blade is provided with a downwardly facing outer flange, and the size of the outer flange in the up-down direction is smaller than the size of the inner flange in the up-down direction.

[0009] Furthermore, a blocking protrusion is provided on the top end of the inner flange of the blade and protrudes outward.

[0010] Furthermore, a blocking protrusion is provided on the inner end of the blade protruding outward.

[0011] Furthermore, the blade has a main body that is arranged obliquely, and the blocking protrusion of one of the two adjacent blades has an inclined surface that is parallel to and opposite to the inclined side surface of the main body of the other blade.

[0012] Furthermore, the blocking protrusion has a horizontal side surface facing downward.

[0013] Furthermore, the blocking protrusion has an upward curved surface.

[0014] Furthermore, the blocking protrusion of one of the two adjacent blades has an overlapping portion with the projection of the other blade in the inward and outward directions.

[0015] Beneficial effects of the shutters of the present invention: The present invention is improved on the basis of the shutters in the prior art. By making the gap between the inner ends of two adjacent blades smaller than the gap between the outer ends, the inner channel opening of the air flow channel formed by the two adjacent blades is made smaller than the outer channel opening. When the hot air inside the cabinet is discharged outward through the air flow channel, the air flow passes through the air flow channel. Since the inner channel opening is small and the outer channel opening is large, the flow rate of the inner channel opening becomes faster, and the flow rate of the air inside the cabinet is very small, almost zero. In this way, the inner channel opening is connected with the internal space of the cabinet. The faster gas flow rate at the inner channel opening can be used to quickly carry the air in the cabinet to flow outward, which is beneficial to improving the heat dissipation effect.

[0016] The technical solution of the cabinet of the present invention is: A cabinet includes a cabinet body provided with a shutter, the shutter including a window frame and blades arranged on the window frame, the blades having an inner end facing the inside of the cabinet and an outer end facing the outside of the cabinet, an air flow channel formed between two adjacent blades, the inner ends of the two adjacent blades forming an inner channel opening of the air flow channel for passing through the interior space of the cabinet, the outer ends of the two adjacent blades forming an outer channel opening of the air flow channel, the gap between the inner ends of the two adjacent blades being smaller than the gap between the outer ends so that the inner channel opening is smaller than the outer channel opening.

[0017] Furthermore, the inner end of the blade is provided with an upward inner turning edge, and the inner turning edge of the lower blade and the inner end of the upper blade of the upper adjacent blades are used to enclose the inner channel opening.

[0018] Furthermore, the outer end of the blade is provided with a downwardly facing outer flange, and the size of the outer flange in the up-down direction is smaller than the size of the inner flange in the up-down direction.

[0019] Furthermore, a blocking protrusion is provided on the top end of the inner flange of the blade and protrudes outward.

[0020] Furthermore, a blocking protrusion is provided on the inner end of the blade protruding outward.

[0021] Furthermore, the blade has a main body that is arranged obliquely, and the blocking protrusion of one of the two adjacent blades has an inclined surface that is parallel to and opposite to the inclined side surface of the main body of the other blade.

[0022] Furthermore, the blocking protrusion has a horizontal side surface facing downward.

[0023] Furthermore, the blocking protrusion has an upward curved surface.

[0024] Furthermore, the blocking protrusion of one of the two adjacent blades has an overlapping portion with the projection of the other blade in the inward and outward directions.

[0025] The beneficial effects of the cabinet of the present invention: The present invention is improved on the basis of the shutters of the cabinet in the prior art. By making the gap between the inner ends of two adjacent blades of the shutter smaller than the gap between the outer ends, the inner channel opening of the air flow channel formed by the two adjacent blades is made smaller than the outer channel opening. When the hot air inside the cabinet is discharged outward through the air flow channel, the air flow passes through the air flow channel. Since the inner channel opening is small and the outer channel opening is large, the flow rate of the inner channel opening becomes faster, and the flow rate of the air inside the cabinet is very small, almost zero. In this way, the inner channel opening is connected with the internal space of the cabinet. The faster gas flow rate at the inner channel opening can be used to quickly carry the air in the cabinet to flow outward, which is beneficial to improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of embodiment 1 of the shutter of the present invention; Figure 2 for Figure 1 A front view of the shutters in; Figure 3 for Figure 1 A vertical cross-sectional view of the shutter in FIG; Figure 4 for Figure 3 A partial schematic diagram of the blade structure in FIG; Figure 5 This is a partial schematic diagram of the blade structure in Example 2 of the Venetian blinds of the present invention.

[0027] In the figure: 1. Window frame; 2. Blade; 21. Main body; 22. Inner flange; 23. Outer flange; 24. Blocking convex portion; 241. Inclined surface of convex portion; 242. Horizontal side surface; 243. Upward curved surface; 3. Air flow channel; 31. Inner channel opening; 32. Outer channel opening. DETAILED DESCRIPTION

[0028] The shutters of the present invention make the gap between the inner ends of two adjacent blades smaller than the gap between the outer ends, thereby making the inner channel opening of the air flow channel formed by the two adjacent blades smaller than the outer channel opening. When the hot air inside the cabinet is discharged outward through the air flow channel, the air flow passes through the air flow channel. Since the inner channel opening is small and the outer channel opening is large, the flow rate of the inner channel opening becomes faster, while the flow rate of the air inside the cabinet is very small, almost zero. In this way, the inner channel opening is connected with the internal space of the cabinet. The faster gas flow rate at the inner channel opening can be used to quickly carry the air inside the cabinet to flow outward, which is beneficial to improving the heat dissipation effect.

[0029] Embodiments of the shutters of the present invention: The shutters in this embodiment are used to be installed on the cabinet body to facilitate the heat dissipation of the cabinet. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the Venetian blind includes a window frame 1 and blades 2 mounted on the window frame 1. The window frame 1 is a rectangular frame, and the blades 2 are spaced apart vertically. The blades 2 extend horizontally, and the left and right ends of the blades 2 are connected to the window frame 1. Every two adjacent blades 2 form an airflow channel 3, through which hot air in the cabinet is discharged.

[0030] The blade 2 has an inner end facing the inside of the cabinet and an outer end facing the outside of the cabinet. The inner ends of two adjacent blades 2 form an inner channel opening 31 of the air flow channel 3 for passing through the internal space of the cabinet, and the outer ends of two adjacent blades 2 form an outer channel opening 32 of the air flow channel 3. The outer channel opening 32 of the air flow channel 3 is used to communicate with the atmosphere outside the cabinet.

[0031] The inner end of the blade 2 is provided with an upward inner flap 22, and the outer end of the blade 2 is provided with a downward outer flap 23. The blade 2 also includes a main plate 21 located between the inner flap 22 and the outer flap 23. The main plate 21 is arranged obliquely, with the inner end of the main plate 21 being higher and the outer end being lower. The inner end of the main plate 21 is integrally connected to the lower end of the inner flap 22, and the outer end of the main plate 21 is integrally connected to the upper end of the outer flap 23. The main plate 21 is smoothly connected to the inner flap 22 and the outer flap 23. The inner flap 22 and the outer flap 23 are all vertically arranged up and down, with the inner flap 22 facing vertically upward and the outer flap 23 facing vertically downward. The inner flap 22, the main plate 21, and the outer flap 23 have the same thickness and are integrally connected. The size of the outer flange 23 in the vertical direction is smaller than the size of the inner flange 22 in the vertical direction, that is, the inner flange 22 is wider and the outer flange 23 is narrower. In this way, for each blade 2 arranged side by side, the gap between the inner ends of the two adjacent blades 2 is smaller than the gap between the outer ends, thereby making the inner channel opening 31 smaller than the outer channel opening 32. The top of the inner flange 22 of the lower blade 2 of the two adjacent blades 2 above and below and the inner end of the upper blade 2 are used to enclose the inner channel opening 31. The inner channel opening 31 is formed by the gap between the innermost parts of the two adjacent blades 2 in the vertical direction. The inner flange 22 is the innermost part of the blade 2. The wider inner flange 22 makes the inner channel opening 31 relatively small, while the outer channel opening 32 is relatively large. In this way, when the airflow passes through the airflow channel 3, the flow rate through the inner channel opening 31 is relatively high, while the flow rate through the outer channel opening 32 is relatively low. This is equivalent to increasing the gas flow rate at the inner channel opening 31, and the inner channel opening 31 is directly connected to the internal space of the cabinet. The airflow with a higher flow rate at the inner channel opening 31 can be used to drive the flow of air inside the cabinet, which is beneficial to the discharge of hot air inside the cabinet and improves the heat dissipation effect.

[0032] The top of the inner flange 22 of the blade 2 is provided with a blocking protrusion 24 protruding outward. That is, the inner end of the blade 2 is provided with a blocking protrusion 24 protruding outward. The blocking protrusion 24 is based on the vertical inner flange 22 and is hook-shaped. The blocking protrusion 24 has a convex bevel 241, a horizontal side surface 242, and an upward curved surface 243. The upward curved surface 243 connects with the top curved surface of the inner flange 22 to form a circular arc surface. The circular arc surface is a convex arc surface. The top curved surface of the inner flange 22 smoothly connects with its inner side surface. The convex bevel 241 smoothly connects with the upward curved surface 243. The convex bevel 241 is inclined upward. The convex bevel 241 of the blocking protrusion 24 of the lower blade 2 of the two adjacent blades 2 is parallel to the downward-sloping side surface of the main body 21 of the upper blade 2. The horizontal side surface 242 of the blocking protrusion 24 faces downward and is perpendicular to the outward-facing side surface of the inner flange 22. The blocking protrusion 24 of the lower blade 2 of the two adjacent blades 2 has an overlapping part with the projection of the upper blade 2 in the inner and outer directions, so that the projection of the two adjacent blades 2 in the inner and outer directions has an overlapping part, which can prevent the internal space of the cabinet from directly connecting to the outside.

[0033] Providing a blocking protrusion 24 at the inner end of blade 2 prevents strong winds from blowing sand and dust into the cabinet's interior. In strong winds, sand and dust may flow back along the smooth surface of blade 2 and into the cabinet. Therefore, providing a blocking protrusion 24 at the high point of the inner end of blade 2 effectively intercepts sand and dust. Furthermore, the gap between the inner portions of the two blades 2 is reduced, making the inner gap smaller than the outer gap. When wind blows outside the cabinet, air in the outer gap draws air into the inner gap, making the inner gap slightly smaller in volume. Combined with the higher internal and external temperature of the cabinet, the resulting pressure difference allows the external wind to effectively draw air out of the cabinet for heat dissipation.

[0034] Both the blades 2 and the window frame 1 are made of ABS material. The window frame 1 and the blades 2 are integrally formed through injection molding. After molding, they can be directly installed in the cabinet body. The inclination angle of the blades 2 can be set to a larger angle, the spacing between the blades 2 is smaller, and the overlap is higher, which improves the waterproof and dustproof effect. The blades 2 formed by integral injection molding have a high surface smoothness, and the bend of the blades 2 is a smoothly transitioned arc, which improves air circulation. The blinds have the structural characteristics of light weight, easy installation, good heat dissipation and good waterproofing. At the same time, the integral injection molding process is efficient and the material cost is low.

[0035] In other embodiments, the outer flange may not be provided, and the outer end of the main plate body constitutes the outer end of the blade.

[0036] In other embodiments, the blocking protrusion may not be provided, and the gap between the inner ends of the two blades may be reduced only by the inner turning edge.

[0037] In other embodiments, the blocking protrusion may also be a folded edge that is bent outward based on the inner turning edge.

[0038] Embodiment 2 of the Venetian blinds of the present invention: This embodiment provides a blade structure different from that of the shutter in embodiment 1, such as Figure 5 As shown, the upper side and the lower side of the blade 2 are both inclined surfaces with different degrees of inclination. The thickness of the blade 2 gradually decreases from the inside to the outside. The opposite sides of two adjacent blades 2 form an airflow channel 3. By making the inner end thickness of the blade 2 greater than the outer end thickness, the inner channel opening of the airflow channel 3 is smaller than the outer channel opening.

[0039] Embodiments of the cabinet of the present invention: The cabinet includes a cabinet body and shutters arranged on the cabinet body. The structure of the shutters is the same as that of the above-mentioned embodiment 1 or 2 of the shutters, and will not be repeated here.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A Venetian blind comprising a window frame and blades disposed on the window frame, wherein the blades have inner ends facing the interior of a cabinet and outer ends facing the exterior of the cabinet, an airflow channel being formed between two adjacent blades, wherein the inner ends of the adjacent blades form an inner channel opening of the airflow channel for penetrating the interior space of the cabinet, and the outer ends of the adjacent blades form an outer channel opening of the airflow channel, wherein: The gap between the inner ends of two adjacent blades is smaller than the gap between the outer ends so that the inner channel opening is smaller than the outer channel opening.

2. The shutter according to claim 1, wherein: The inner end of the blade is provided with an upward inner turning edge, and the inner turning edge of the lower blade and the inner end of the upper blade of the upper adjacent blades are used to enclose the inner channel opening.

3. The shutter according to claim 2, wherein: The outer end of the blade is provided with a downwardly facing outer turning edge, and the size of the outer turning edge in the up-down direction is smaller than the size of the inner turning edge in the up-down direction.

4. The shutter according to claim 2 or 3, characterized in that: The top end of the inner turning edge of the blade is provided with a blocking convex portion protruding outward.

5. The shutter according to claim 1, 2 or 3, characterized in that: The inner end of the blade is provided with a blocking convex portion protruding outward.

6. The shutter according to claim 5, wherein the blades The utility model has an inclined main plate body, and the blocking protrusion of one of the two adjacent blades has an inclined surface which is parallel to and opposite to the inclined side surface of the main plate body of the other blade.

7. The shutter according to claim 5, wherein: The blocking protrusion has a horizontal side facing downward.

8. The shutter according to claim 5, wherein: The blocking protrusion has an upward curved surface.

9. The shutter according to claim 5, wherein: The blocking protrusion of one of the two adjacent blades has an overlapping portion with the projection of the other blade in the inward and outward directions.

10. A cabinet comprising a cabinet body with shutters provided on the cabinet body, characterized in that: The shutter is the shutter according to any one of claims 1 to 9.

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