Shutter and electric cabinet

Abstract

The utility model discloses a shutter and an electric power cabinet, the shutter is arranged on the electric power cabinet, and a window frame is provided with an installation space. The multiple louvre blades are arranged in the installation space at intervals in the height direction of the window frame, each louvre blade comprises a first concave part and a second concave part which are sequentially arranged in the height direction, the first concave part is concave in the first direction of the window frame, the second concave part is concave in the direction opposite to the first direction, and the first concave part and the second concave part are arranged in the two ends of each louvre blade. And at least one end of each blade is embedded into the first concave part or the second concave part of the corresponding adjacent blade, so that an overflowing flow channel is formed between every two adjacent blades in a surrounding manner. The first partition piece is selectively arranged in the overflowing flow channel, and the extending direction of the first partition piece arranged in the overflowing flow channel is consistent with the extending direction of the overflowing flow channel. Wherein at least one of the louvre blade and the first separator is arranged in an S shape. The problem that in the prior art, a louver is poor in ventilation performance is solved.

Description

Technical Field

[0001] This application relates to the technical field of power cabinets, and more particularly, to a louver and a power cabinet. Background Art

[0002] For the commonly used louvers on the market, in order to improve the rainproof effect, most of their louvers adopt a labyrinth structure. When air flows through the labyrinth structure, it needs to flow through multiple sudden expansion or sudden contraction cross-sections and make multiple turns close to 360°, which will cause a large local loss of air flow.

[0003] Especially when the air flow turns in the labyrinth structure, eddy currents will be generated at the turning points of the air flow in the labyrinth structure, which will exacerbate the air flow loss and ultimately cause the problem of poor ventilation performance of the louver. Utility Model Content

[0004] The main purpose of this application is to provide a louver and a power cabinet to at least improve the problem of poor ventilation performance of the louver in the prior art.

[0005] According to one aspect of this application, a louver is provided, including:

[0006] A window frame having an installation space;

[0007] Window leaves, including a plurality of window leaves, the plurality of window leaves are arranged at intervals in the installation space along the height direction of the window frame, each window leaf includes a first recessed portion and a second recessed portion arranged in sequence along the height direction, the first recessed portion is recessed along a first direction of the window frame, the second recessed portion is recessed along a direction opposite to the first direction, and at least one end of the two ends of the window leaf is embedded in the first recessed portion or the second recessed portion of the adjacent window leaf to form a flow-through channel between two adjacent window leaves;

[0008] A first partition member, the first partition member is selectively arranged in the flow-through channel, and the extending direction of the first partition member arranged in the flow-through channel is consistent with the extending direction of the flow-through channel;

[0009] Wherein, at least one of the window leaf and the first partition member is arranged in an S shape.

[0010] Further, the first partition member is arranged in the flow-through channel to divide the flow-through channel into two shunt channels on average.

[0011] Further, the window frame further includes a second partition member, and the second partition member is arranged between the first partition member and the first recessed portion; and / or,

[0012] The second partition is disposed between the first partition and the second recess.

[0013] Further, at least one end of the two ends of the window leaf is provided with an arc surface close to the end surface of the flow channel.

[0014] Further, the thickness of the end of the louver first increases and then decreases.

[0015] Further, the window leaf is arranged in an S shape, and the first partition arranged in an S shape is arranged in the flow channel between two adjacent window leaves.

[0016] Further, the window leaf includes:

[0017] A first horizontal section, the extending direction of the first horizontal section is the same as the first direction;

[0018] A first vertical section, the first vertical section is connected to the first horizontal section and extends downward along the height direction;

[0019] A first inclined section, the first inclined section is connected to the first vertical section, and the first inclined section is inclined along the direction opposite to the first direction;

[0020] A second vertical section, the second vertical section is connected to the first inclined section and extends downward along the height direction;

[0021] A second inclined section, the second inclined section is connected to the second vertical section and is inclined along the first direction;

[0022] Wherein, the first horizontal section, the first vertical section and the first inclined section enclose to form the first recess, the first inclined section, the second vertical section and the second inclined section enclose to form the second recess, and the first partition is arranged between the flow channels of two adjacent window leaves.

[0023] Further, along the height direction of the window frame, one end of the top window leaf among the plurality of window leaves is connected to the top side wall of the window frame, and one end of the bottom window leaf among the plurality of window leaves is connected to the bottom side wall of the window frame.

[0024] Further, a waterproof flange is arranged on the side wall of the window frame.

[0025] On the other hand, the present application also provides a power cabinet, and the power cabinet includes the above-mentioned louver.

[0026] Compared with the prior art, in the present application, the first separator is selectively disposed in the flow-through channel. When the first separator is disposed in the flow-through channel, the extending direction of the first separator is consistent with the extending direction of the flow-through channel, so as to prevent the first separator from blocking the flow-through channel and causing air to be unable to enter the power cabinet through the flow-through channel. In addition, "at least one of the window leaf and the first separator is arranged in an S shape" means that when the window leaf is arranged in an S shape, when the first separator is disposed in the flow-through channel, the first separator is arranged in an S shape, and both the window leaf and the first separator are arranged in an S shape. Specifically, when the window leaf is arranged in an S shape, when the air flow passes through the corner area of the labyrinth structure, since the corner area has an arc-shaped corner transition, the generation of eddy currents is reduced, so that the flow resistance in the flow-through channel is reduced, and thus air can enter the power cabinet better. When the first separator is arranged in an S shape, the first separator can divide the flow-through channel into two channels. Part of the air flow flows through the channel between the first separator and the first recess, and part of the air flow flows through the channel between the second separator and the second recess. After the air flow is split, the eddy current generated at the corner is small, and thus the air flow can smoothly flow into the power cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0028] Figure 1 is a schematic structural view of the first kind of louver disclosed in the present application;

[0029] Figure 2 is a schematic structural view of the second kind of louver disclosed in the present application;

[0030] Figure 3 is a schematic structural view of the third kind of louver disclosed in the present application;

[0031] Figure 4 is a schematic structural view of the fourth kind of louver disclosed in the present application;

[0032] Figure 5 is a schematic structural view of the fifth kind of louver disclosed in the present application;

[0033] Figure 6 is a schematic structural view of the louver in the prior art;

[0034] Figure 7 is Figure 1 an enlarged schematic view of region I in

[0035] Figure 8 is Figure 4 an enlarged schematic view of region II in

[0036] Figure 9 For Figure 5 Schematic enlarged view of Region III in

[0037] Figure 10 Schematic diagram of air flow in the flow channel of the louver in the present application;

[0038] Figure 11 Schematic diagram of air flow in the flow channel of the louver in the prior art;

[0039] Figure 12 Test chart of air flow velocity and pressure loss in the flow channel for fluid passing through;

[0040] Among them, the above-mentioned drawings include the following reference numerals:

[0041] 10, window frame; 11, installation space; 20, window leaf; 21, first horizontal section; 22, first vertical section; 23, first inclined section; 24, second vertical section; 25, second inclined section; 30, first partition; 40, flow channel for fluid passing through; 41, shunt flow channel; 50, second partition; 101, waterproof flange; 201, first recess; 202, second recess; 203, end. Detailed implementation manners

[0042] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0043] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0045] See Figures 1 to 12 As shown, according to an embodiment of the present application, a power cabinet is provided. A louver is provided on the power cabinet. Specifically, the louver has the functions of air intake and waterproofing. The louver includes a window frame 10, window leaves 20, and a first partition member 30.

[0046] Among them, the window frame 10 has an installation space 11. The window leaves 20 include a plurality of them. The plurality of window leaves 20 are arranged at intervals in the installation space 11 along the height direction of the window frame 10 (such as the Z direction in the attached Figure 1 drawing). Each window leaf 20 includes a first recessed portion 201 and a second recessed portion 202 arranged in sequence along the height direction. The first recessed portion 201 is recessed along the first direction of the window frame 10 (such as the Y direction in the attached Figure 1 drawing), and the second recessed portion 202 is recessed along a direction opposite to the first direction. At least one end of the two ends of the window leaf 20 is embedded in the first recessed portion 201 or the second recessed portion 202 of the adjacent window leaf 20 to form a flow channel 40 for fluid flow between two adjacent window leaves 20. The first partition member 30 is selectively disposed in the flow channel 40 for fluid flow. The extending direction of the first partition member 30 disposed in the flow channel 40 for fluid flow is consistent with the extending direction of the flow channel 40 for fluid flow. Among them, at least one of the window leaf 20 and the first partition member 30 is arranged in an S shape.

[0047] Specifically, since at least one end of two adjacent window leaves 20 of the louver in this embodiment is embedded in the first recessed portion 201 or the second recessed portion 202 of the adjacent window leaf 20, a labyrinth structure is formed between the plurality of window leaves 20, and the fluid flow rate is set in the labyrinth structure so that the louver has a certain waterproof and dustproof effect. As shown in the attached Figure 11As shown, when a labyrinth structure is formed between multiple window leaves 20, when air flows through the corner of the labyrinth structure through the flow-through channel 40, local eddy currents will be generated, resulting in a large flow resistance in the flow-through channel, making it impossible for gas to efficiently or quickly pass through the louvers and enter the power cabinet, thus affecting the heat dissipation of the power cabinet.

[0048] Compared with the prior art, in this embodiment, the first partition 30 is selectively arranged in the flow-through channel 40, and when the first partition 30 is arranged in the flow-through channel 40, the extending direction of the first partition 30 is consistent with the extending direction of the flow-through channel 40 to prevent the first partition 30 from blocking the flow-through channel 40 and causing air to be unable to enter the power cabinet through the flow-through channel 40. In addition, "at least one of the window leaf 20 and the first partition 30 is arranged in an S shape" means that when the window leaf 20 is arranged in an S shape and the first partition 30 is arranged in the flow-through channel 40, the first partition 30 is arranged in an S shape and both the window leaf 20 and the first partition 30 are arranged in an S shape. Specifically, when the window leaf 20 is arranged in an S shape, when the air flow passes through the corner area of the labyrinth structure, since the corner area has an arc-shaped angle transition, the generation of eddy currents is reduced, so that the flow resistance in the flow-through channel 40 is reduced, and thus air can enter the power cabinet better. And when the first partition 30 is arranged in an S shape, the first partition 30 can divide the flow-through channel 40 into two flow channels. As shown in the attachment Figure 10 As shown, part of the air flow flows through the flow channel between the first partition 30 and the first recess 201, and part of the air flow flows through the flow channel between the second partition 50 and the second recess 202. After the air flow is divided, the eddy currents generated by the air flow at the corner are smaller, and then the air flow can smoothly flow into the power cabinet.

[0049] Furthermore, the first partition 30 is arranged in the flow-through channel 40 to divide the flow-through channel 40 into two equal flow channels 41.

[0050] Specifically, the first partition 30 divides the flow-through channel 40 into two equal flow channels 41 and makes the volume of each flow channel the same, which can effectively reduce the secondary flow generated by the centrifugal force when the air flow turns at a large angle, thereby reducing the eddy current loss caused by the air flow on the inner side of the bend.

[0051] In addition, the first partition 30 can also improve the protection effect of the louvers, that is, when water or other impurities enter the flow-through channel 40 between two adjacent window leaves 20, they will be blocked by the first partition 30, and under the action of gravity, the water or impurities will fall to the bottom of the louvers, thereby preventing water or impurities from entering the power cabinet.

[0052] As shown in the attachment Figure 2As shown, the window frame 10 further includes a second partition member 50, and the second partition member 50 is disposed between the first partition member 30 and the first recess 201.

[0053] Specifically, the second partition member 50 can be disposed in the shunt flow channel 41 to further partition the shunt flow channel 41, thereby further reducing the flow resistance in the shunt flow channel 41 and improving the protection effect of the shutter. Optionally, the second partition member 50 is disposed between the first partition member 30 and the second recess 202. Of course, a third partition member can also be disposed between the second partition member 50 and the first recess 201 or between the second partition member 50 and the second recess 202 to partition the flow channel again.

[0054] Furthermore, at least one end of the two ends of the window leaf 20 is provided with an arc surface near the end surface of the flow-through channel 40.

[0055] Specifically, the end surfaces of one ends of two adjacent window leaves 20 are the side wall surfaces of the flow-through channel 40. According to the Coanda effect, when the fluid flows through the arc surface of the end surface, the fluid will change its own flow direction and flow along the direction of the arc surface. That is to say, when the air flow flows into the corner area, the air flow changes its flow direction due to the existence of the arc surface. Therefore, when the air flow flows through the corner area, the probability of the air flow colliding in the corner area is reduced, so that the generated eddy current will be correspondingly reduced, and finally the flow resistance in the flow-through channel 40 is reduced. In a preferred embodiment, the end surfaces of the two ends of the window leaf 20 near the flow-through channel 40 are both provided with arc surfaces.

[0056] Furthermore, the thickness of the end portion 203 of the shutter first increases and then decreases.

[0057] As shown in the appendix Figure 9 As shown, for the end portion 203 of the shutter embedded in the first recess 201 and the end portion 203 of the window leaf 20 embedded in the second recess 202, along the direction of approaching the first recess 201 or the second recess 202, the thickness of the end portion 203 first increases and then decreases, so that the end portion 203 of the window leaf 20 forms a water droplet-shaped end portion 203. Since the curvature radius of the arc surface of the water droplet-shaped end portion 203 is larger than the curvature radius of the arc surface formed when the thickness of the end portion 203 remains unchanged, when the fluid passes through the end portion 203 of the window leaf 20, the turning of the fluid is smoother, so that the fluid flows along the wall surface of the window leaf 20 as much as possible, further reducing the loss generated by the fluid at the corner.

[0058] To prevent water stains or other impurities from entering the power cabinet through the gap between the window leaf 20 and the window frame 10, thereby affecting the power cabinet. Therefore, in this embodiment, along the height direction of the window frame 10, one end of the top window leaf 20 among the plurality of window leaves 20 is connected to the top side wall of the window frame 10, and one end of the bottom window leaf 20 among the plurality of window leaves 20 is connected to the bottom side wall of the window frame 10.

[0059] Specifically, one end of the top sash 20 among the multiple sashes 20 can be in contact with the top side wall of the window frame 10, and waterproof glue can also be provided between the end 203 of the sash 20 and the top side wall of the window frame 10, so as to prevent water stains from entering the power cabinet between one end of the sash 20 and the top side wall of the window frame 10. Similarly, one end of the bottom sash 20 among the multiple window frames 10 can be in contact with the bottom side wall of the window frame 10, or can also be connected by waterproof glue.

[0060] Furthermore, a waterproof flange 101 is provided on the side wall of the window frame 10. In some embodiments, the waterproof flange 101 is provided on the bottom side wall of the window frame 10, on the side close to the power cabinet, and the waterproof flange 101 protrudes in the direction close to the top side wall of the window frame 10. When the sash 20 diverts water stains to the bottom of the window frame 10, since the waterproof flange 101 is provided on the bottom side wall of the window frame 10, the water stains will not flow into the power cabinet from the bottom of the window frame 10. Of course, in some other embodiments, the waterproof flange 101 can be provided on both side walls in the width direction of the window frame 10 and the top side wall of the window frame 10, further enhancing the protection effect of the shutter.

[0061] In addition, this application also provides a variety of specific embodiments, and the flow resistance in the flow-through channel 40 in a variety of embodiments is compared to show the difference between the shutter of this application and the shutter in the prior art.

[0062] Embodiment 1:

[0063] In Embodiment 1, the sash 20 is arranged in an S shape. As shown in the appendix Figure 1 A first partition member 30 in an S shape is provided in the flow-through channel 40 between two adjacent sashes 20. And the relationship between the flow velocity and the pressure loss of the air flow in the flow-through channel 40 is measured. The loss of the air flow pressure is used to describe the flow resistance in the flow-through channel 40, that is, the greater the pressure loss of the air flow in the flow-through channel 40, the greater the flow resistance in the flow-through channel 40.

[0064] Embodiment 2:

[0065] In Embodiment 2, as shown in the appendix Figure 3As shown, the window leaf 20 includes a first horizontal section 21, a first vertical section 22, a first inclined section 23, a second vertical section 24, and a second inclined section 25. Among them, the extending direction of the first horizontal section 21 is the same as the first direction. The first vertical section 22 is connected to the first horizontal section 21 and extends downward along the height direction. The first inclined section 23 is connected to the first vertical section 22, and the first inclined section 23 is inclined in the direction opposite to the first direction. The second vertical section 24 is connected to the first inclined section 23 and extends downward along the height direction. The second inclined section 25 is connected to the second vertical section 24 and is inclined in the first direction. Among them, the first horizontal section 21, the first vertical section 22, and the first inclined section 23 enclose and form a first recess 201. The first inclined section 23, the second vertical section 24, and the second inclined section 25 enclose and form a second recess 202. A first separator 30 is provided between the flow channels 40 of adjacent two window leaves 20, and in Embodiment 2, the first separator 30 is arranged in an S shape. That is, the window leaf 20 in this embodiment is the same as the window leaf 20 in the existing solution, but an S-shaped first separator 30 is provided in the flow channel 40.

[0066] Embodiment 3:

[0067] Different from Embodiment 1, as shown in the appendix Figure 5 As shown, arc-shaped surfaces are provided at both ends 203 of the window leaf 20 in Embodiment 3, and both ends of the window leaf 20 are set in a water droplet shape.

[0068] Comparative Example 1:

[0069] Different from Embodiment 2, as shown in the appendix Figure 6 As shown, no first separator 30 is provided between the flow channels 40 of adjacent two window leaves 20.

[0070] In this application, the relationship between the air flow rate and pressure loss in each flow channel 40 in Comparative Example 1, Embodiment 1, Embodiment 2, and Embodiment 3 is plotted in the appendix Figure 12 As shown in the appendix Figure 12 As shown, the air flow velocity is proportional to the pressure loss in the flow channel 40. By comparing Comparative Example 1 and Embodiment 2, it can be seen that when an S-shaped first separator 30 is provided between the flow channels 40, at a certain air flow velocity, the pressure loss in the flow channel 40 is significantly reduced. In addition, by comparing Embodiment 1 and Embodiment 2, it can be seen that when the window leaf 20 is arranged in an S shape, at a certain air flow velocity, the pressure loss in the flow channel 40 is further reduced. By comparing Embodiment 1 and Embodiment 4 again, it can be obtained that when both ends 203 of the window leaf 20 are arranged in a water droplet shape, at a certain air flow velocity, the pressure loss in the flow channel 40 is further reduced.

[0071] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0073] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A shutter, characterized in that: include: A window frame (10), wherein the window frame (10) has an installation space (11); A window blade (20), the window blade (20) comprising a plurality of window blades (20), the plurality of window blades (20) being arranged in the installation space (11) at intervals along the height direction of the window frame (10), each of the window blades (20) comprising a first recessed portion (201) and a second recessed portion (202) arranged in sequence along the height direction, the first recessed portion (201) being recessed along a first direction of the window frame (10), the second recessed portion (202) being recessed along a direction opposite to the first direction, at least one of the two ends of the window blade (20) being embedded in the first recessed portion (201) or the second recessed portion (202) of an adjacent window blade (20), so as to enclose and form a flow passage (40) between two adjacent window blades (20); A first partition (30), wherein the first partition (30) may be selectively arranged in the flow passage (40), and an extension direction of the first partition (30) arranged in the flow passage (40) is consistent with an extension direction of the flow passage (40); Wherein, at least one of the window blade (20) and the first partition (30) is arranged in an S shape.

2. The shutter according to claim 1, characterized in that: The first separator (30) is arranged in the flow passage (40) to equally divide the flow passage (40) into two branch flow passages (41).

3. The shutter according to claim 1, characterized in that: The window frame (10) further comprises a second partition (50), wherein the second partition (50) is arranged between the first partition (30) and the first recessed portion (201); and / or, The second partition (50) is disposed between the first partition (30) and the second recessed portion (202).

4. The shutter according to claim 1, characterized in that: An end surface of at least one of the two ends of the window blade (20) close to the flow passage (40) is arranged as an arc-shaped surface.

5. The shutter according to claim 4, characterized in that: The thickness of the end portion (203) of the shutter increases first and then decreases.

6. The shutter according to any one of claims 1 to 5, characterized in that: The window blades (20) are arranged in an S shape, and the first partition (30) arranged in an S shape is arranged in the flow passage (40) between two adjacent window blades (20).

7. The shutter according to any one of claims 1 to 5, characterized in that: The window blade (20) comprises: A first horizontal section (21), wherein the extending direction of the first horizontal section (21) is consistent with the first direction; A first vertical section (22), the first vertical section (22) is connected to the first horizontal section (21) and extends downward in the height direction; a first inclined section (23), the first inclined section (23) being connected to the first vertical section (22), and the first inclined section (23) being inclined in a direction opposite to the first direction; a second vertical section (24), the second vertical section (24) being connected to the first inclined section (23) and extending downward in the height direction; a second inclined section (25), the second inclined section (25) being connected to the second vertical section (24) and inclined along the first direction; The first horizontal section (21), the first vertical section (22) and the first inclined section (23) are arranged to form the first recessed portion (201); the first inclined section (23), the second vertical section (24) and the second inclined section (25) are arranged to form the second recessed portion (202); and the first partition (30) is arranged between the flow passages (40) of two adjacent window blades (20).

8. The shutter according to any one of claims 1 to 5, characterized in that: Along the height direction of the window frame (10), one end of the top window leaf (20) among the plurality of window leafs (20) is connected to the top side wall of the window frame (10), and one end of the bottom window leaf (20) among the plurality of window leafs (20) is connected to the bottom side wall of the window frame (10).

9. The shutter according to any one of claims 1 to 5, characterized in that: A waterproof flange (101) is provided on the side wall of the window frame (10).

10. A power cabinet, characterized in that: The power cabinet comprises the shutter according to any one of claims 1 to 9.

Images