Sealing structure of outdoor cabinet door of frequency converter

Abstract

The utility model relates to the technical field of cabinet door sealing structures, in particular to a sealing structure of a frequency converter outdoor cabinet door. According to the technical scheme, the sealing structure comprises a door frame and a door plate rotationally installed on the door frame, and further comprises a first-layer sealing assembly installed on the door plate and a second-layer sealing assembly installed on the door frame, and a plurality of drainage holes are formed in the position, between the first-layer sealing assembly and the second-layer sealing assembly, of the bottom of the door plate. Through the arrangement of the first-layer sealing assembly and the second-layer sealing assembly, the sealing effect can be guaranteed through the matching effect of the two layers of sealing structures, and meanwhile, the first sealing strip and the second sealing strip are both of a clamping structure and are convenient to install and replace. When a small amount of liquid enters the first-layer sealing assembly, most of the liquid flows to the drainage hole below the door plate along the door plate, so that the amount of the liquid reaching the second-layer sealing assembly is reduced, and the risk of water leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the sealing structure of cabinet doors, in particular to a sealing structure of the cabinet door of an outdoor cabinet for a frequency converter. Background Art

[0002] A frequency converter is a power control device that applies frequency conversion technology and microelectronics technology to control an AC motor by changing the working power frequency of the motor. The application fields of frequency converters are very wide, and there are many working conditions that require outdoor use. Compared with indoor frequency converters, outdoor frequency converters need to have a higher level of protection measures to resist harsh weather conditions, such as rain, dust, etc. The key point of the design of outdoor frequency converters lies in the cabinet door. In the past, frequency converters usually used a sealing glue applicator to make a circle of sealing strips on the cabinet door, but the sealing and waterproof effect of a single-layer sealing strip is limited, and it is not easy to replace after aging. Content of the Utility Model

[0003] The purpose of the utility model is to address the problems that the sealing and waterproof effect of a single-layer sealing strip is limited and it is not easy to replace after aging mentioned in the background art, and to propose a sealing structure of the cabinet door of an outdoor cabinet for a frequency converter with double-layer sealing and easy replacement of the sealing strip.

[0004] The technical solution of the utility model: A sealing structure of the cabinet door of an outdoor cabinet for a frequency converter, including a door frame and a door panel rotatably installed on the door frame, further including:

[0005] A first-layer sealing component installed on the door panel and a second-layer sealing component installed on the door frame, and a plurality of drain holes are provided at the bottom of the door panel and between the first-layer sealing component and the second-layer component;

[0006] A ventilation louver component installed on the door panel, and a louver sealing and dust-proof component is installed on the door panel. The louver sealing and dust-proof component seals the gap between the ventilation louver component and the door frame and intercepts the dust passing through the ventilation louver component.

[0007] Optionally, the first-layer sealing component includes a first sealing strip clamped around the door panel, and the first sealing strip overlaps with the door frame.

[0008] Optionally, the second-layer sealing component includes flanges provided around the door frame. The flanges are located inside the first sealing strip, and a second sealing strip is clamped on the flanges, and the second sealing strip overlaps with the door panel.

[0009] Optionally, metal strips are installed inside both the first sealing strip and the second sealing strip, and the compression areas of the first sealing strip and the second sealing strip are hollow.

[0010] Optionally, the ventilation louver assembly includes a ventilation window provided on the door panel, a support frame fixedly installed on the door panel and located on one side of the ventilation window, a louver fixedly installed on the support frame, the louver is inclined towards the door frame, and there is an angle of ° between the louver and the ground.

[0011] Optionally, the louver seal and dust-proof assembly includes a gasket located between the door panel and the support frame, and a dust-proof net is fixedly installed on one side of the louver close to the door frame.

[0012] Optionally, each louver in the louver is riveted to the support frame by a closed blind rivet.

[0013] Optionally, a long closing door panel is fixedly installed on the door frame, the long closing door panel is locked with the door frame by bolts, and a nylon hole plug is installed in the round hole on the long closing door panel.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] By providing a first sealing component and a second sealing component, through the combined action of the two-layer sealing structure, the sealing effect can be guaranteed. At the same time, both the first sealing strip and the second sealing strip are snap-fit structures, which are convenient to install and replace. When a small amount of liquid enters the first sealing component, most of these liquids will flow along the door panel to the drain hole below the door panel, thereby reducing the amount of liquid reaching the second sealing component and reducing the risk of water leakage.

[0016] Furthermore, the gap between the door panel and the louver is sealed by a gasket, and the dust-proof effect is improved by a dust-proof net. In order to balance the ventilation and dust-proof effects, the density of the dust-proof net is 40 ppi, and the dust-proof net is designed as a detachable structure, which is convenient for replacement and cleaning. It can meet the protection requirements of IP54 level, and has a simple structure, excellent performance, and the sealing rubber strip is easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structural schematic diagram of the first sealing strip and the second sealing strip before compression is given;

[0018] Figure 2 For Figure 1 The cross-sectional view at A-A in

[0019] Figure 3 The Figure 2 The partial enlarged view at A in

[0020] Figure 4 The structural schematic diagram of the first sealing strip and the second sealing strip after compression is given;

[0021] Figure 5 For Figure 4Cross-sectional view taken along line B-B;

[0022] Figure 6 For Figure 5 Enlarged view at position B in the [diagram];

[0023] Figure 7 Schematic diagram showing the position of the ventilation window;

[0024] Figure 8 Schematic diagram showing the structure of the louver seal and dust-proof assembly.

[0025] Reference numerals: 1, door frame; 101, door panel; 2, first sealing strip; 201, second sealing strip; 3, ventilation window; 301, support frame; 302, louver; 303, gasket; 304, dust-proof net; 4, long closing door panel. Detailed implementation manners

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model.

[0028] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] It should be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment

[0033] As Figures 1-6 As shown, a sealing structure for the cabinet door of an outdoor frequency converter proposed by the present utility model includes a door frame 1 and a door panel 101 rotatably mounted on the door frame 1, and further includes a first layer of sealing assembly mounted on the door panel 101 and a second layer of sealing assembly mounted on the door frame 1. The first layer of sealing assembly includes a first sealing strip 2 clamped around the door panel 101, and the first sealing strip 2 overlaps with the door frame 1. When the door panel 101 is closed, the first sealing strip 2 will be squeezed. Due to the soft and elastic characteristics of the first sealing strip 2, it can fill the irregular gaps between the door panel 101 and the door frame 1, forming the first layer of sealing structure of the cabinet door, which can prevent rainwater and dust from entering the interior of the door frame 1 through the gaps between the door panel 101 and the door frame 1. The second layer of sealing assembly includes flanges provided around the door frame. The flanges are located inside the first sealing strip 2, and a second sealing strip 201 is clamped on the flanges. When the door panel 101 is closed, the second sealing strip 201 will be squeezed. The squeezed second sealing strip 201 will form the second layer of sealing structure between the door panel 101 and the door frame 1, which can further improve the ability to block rainwater and dust. Through the combined action of the two layers of sealing structures, the sealing effect is further ensured. At the same time, both the first sealing strip 2 and the second sealing strip 201 are snap-fit structures, which are convenient to install and replace.

[0034] Furthermore, metal strips are installed inside both the first sealing strip 2 and the second sealing strip 201, which can firmly clamp the sealing strips on the plate. The compression areas of the first sealing strip 2 and the second sealing strip 201 are hollow, with a larger compression amount, which can reduce the influence caused by processing errors and plate deformation to a certain extent, ensuring the sealing effect. The splicing seams of the first sealing strip 2 and the second sealing strip 201 are placed at the bottommost position to avoid water leakage from the splicing seams of the rubber strips.

[0035] Among them, a plurality of drain holes are provided at the bottom of the door panel 101 and between the first-layer sealing assembly and the second-layer assembly. If a small amount of liquid enters from the first-layer sealing assembly, most of this liquid will flow along the door panel to the drain holes below the door panel, thereby reducing the amount of liquid reaching the second-layer sealing assembly and reducing the risk of water leakage.

[0036] As Figures 7-8 shown, a ventilation louver assembly installed on the door panel 101 includes a ventilation window 3 provided on the door panel 101, and a support frame 301 fixedly installed on the door panel 101 and located on one side of the ventilation window 3. A louver 302 is fixedly installed on the support frame 301. The ventilation window 3 can help dissipate the heat generated by the equipment and prevent the temperature inside the door frame 1 from being too high. The louver 302 can maintain the closure of the door frame 1 and provide ventilation at the same time, avoiding the potential safety risks that may be brought by directly opening the window. The louver 302 can block most of the dust from entering the cabinet interior while not hindering air circulation.

[0037] Among them, the louver 302 is inclined towards the door frame 1, and there is an angle of 30° between the louver 302 and the ground. And the distance between each louver is relatively close, which enables the louver 302 to prevent rainwater from directly entering the cabinet.

[0038] Furthermore, a louver sealing and dust-proof assembly is installed on the door panel 101. The louver sealing and dust-proof assembly seals the gap between the louver assembly and the door frame and intercepts the dust passing through the ventilation louver assembly. The louver sealing and dust-proof assembly includes a sealing gasket 303 located between the door panel 101 and the support frame 301, and a dust-proof net 304 is fixedly installed on one side of the louver 302 close to the door frame 1. The gap between the door panel 101 and the louver 302 is sealed by the sealing gasket 303, and the dust-proof effect is improved by the dust-proof net 304. In order to balance the ventilation and dust-proof effects, the density of the dust-proof net 304 is 40ppi, and the dust-proof net 304 is designed as a detachable structure for convenient replacement and cleaning.

[0039] Each louver in the louver 302 is riveted to the support frame 301 by a closed-core blind rivet, which can effectively prevent the rivet from becoming a water leakage point.

[0040] A long closing door panel 4 is fixedly installed on the door frame 1. The long closing door panel 4 is locked with the door frame 1 by bolts. A nylon hole plug is installed in the round hole on the long closing door panel 4. The color of the nylon hole plug is a color close to the color of the door panel, which can effectively improve the waterproof seal and enhance the appearance.

[0041] The working principle of this embodiment is as follows: When closing the door panel 101, the first sealing strip 2 will be extruded. Due to the soft and elastic characteristics of the first sealing strip 2, it can fill the irregular gaps between the door panel 101 and the door frame 1, forming the first layer of sealing structure of the cabinet door, which can prevent rainwater and dust from entering the interior of the door frame 1 through the gap between the door panel 101 and the door frame 1. Closing the door panel 101 will simultaneously extrude the second sealing strip 201. The extruded second sealing strip 201 will form the second layer of sealing structure between the door panel 101 and the door frame, which can further improve the ability to block rainwater and dust. Through the combined action of the two-layer sealing structure, the sealing effect is further ensured. At the same time, both the first sealing strip 2 and the second sealing strip 201 are snap-fit structures, which are convenient to install and replace. A plurality of drain holes are provided at the bottom of the door panel 101 and between the first-layer sealing component and the second-layer component. If a small amount of liquid enters from the first-layer sealing component, most of these liquids will flow along the door panel to the drain holes below the door panel, thereby reducing the amount of liquid reaching the second-layer sealing component and reducing the risk of water leakage.

[0042] By making the shutter 302 have an angle of 30° with the ground. And the distance between each shutter is relatively close, which makes the shutter 302 avoid rainwater directly entering the cabinet. The gap between the door panel 101 and the shutter 302 is sealed by the gasket 303, and the dustproof effect is improved by the dustproof net 304. In order to balance the ventilation and dustproof effects, the density of the dustproof net 304 is 40 ppi, and the dustproof net 304 is designed as a detachable structure, which is convenient for replacement and cleaning.

[0043] The preferred embodiments of the above utility model are only used to help illustrate the utility model. The preferred embodiments do not describe all the details in detail, nor limit the utility model to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the utility model, so that those skilled in the relevant technical field can well understand and utilize the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A sealing structure for a door of an outdoor cabinet of a frequency converter, comprising a door frame (1) and a door panel (101) rotatably mounted on the door frame (1), characterized in that: Also includes: A first-layer sealing component installed on the door panel (101) and a second-layer sealing component installed on the door frame (1), wherein a plurality of drainage holes are provided at the bottom of the door panel (101) and between the first-layer sealing component and the second-layer sealing component; A ventilation louver assembly is installed on a door panel (101), wherein a louver sealing and dustproof assembly is installed on the door panel (101), wherein the louver sealing and dustproof assembly seals the gap between the ventilation louver assembly and the door frame and intercepts dust passing through the ventilation louver assembly.

2. The sealing structure of the inverter outdoor cabinet door according to claim 1 is characterized in that: The one-layer sealing assembly comprises a first sealing strip (2) clamped around the door panel (101), and the first sealing strip (2) overlaps the door frame (1).

3. The sealing structure of the inverter outdoor cabinet door according to claim 2, characterized in that: The two-layer sealing assembly comprises flanges arranged around the door frame (1), the flanges being located inside the first sealing strip (2), the second sealing strip (201) being clamped on the flanges, and the second sealing strip (201) being overlapped with the door panel (101).

4. The sealing structure of the inverter outdoor cabinet door according to claim 3 is characterized in that: Metal strips are installed inside the first sealing strip (2) and the second sealing strip (201), and the compression areas of the first sealing strip (2) and the second sealing strip (201) are hollow.

5. The sealing structure of the inverter outdoor cabinet door according to claim 1, characterized in that: The ventilation louver assembly comprises a ventilation window (3) arranged on a door panel (101), a support frame (301) fixedly mounted on the door panel (101) and located on one side of the ventilation window (3), a louver (302) fixedly mounted on the support frame (301), the louver (302) being arranged in an inclined manner in a direction close to the door frame (1), and an angle of 30° being formed between the louver (302) and the ground.

6. The sealing structure of the inverter outdoor cabinet door according to claim 5, characterized in that: The shutter sealing and dustproof assembly comprises a sealing gasket (303) located between the door panel (101) and the supporting frame (301), and a dustproof net (304) is fixedly installed on one side of the shutter (302) close to the door frame (1).

7. The sealing structure of the inverter outdoor cabinet door according to claim 6, characterized in that: Each louver in the louver (302) is riveted to the supporting frame (301) by means of closed-end blind rivets.

8. A sealing structure for a frequency converter outdoor cabinet door according to any one of claims 1 to 7, characterized in that: A long closing door plate (4) is fixedly mounted on the door frame (1); the long closing door plate (4) and the door frame (1) are locked by bolts; and a nylon hole plug is mounted on the circular hole on the long closing door plate (4).

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