Waterproof frequency conversion control cabinet

Abstract

This utility model discloses a waterproof frequency converter control cabinet, comprising: a cabinet body, a support frame fixedly connected to the top of the cabinet body, a protective cover fixedly connected to the top of the support frame, an air inlet at the bottom of the cabinet body, an air outlet at the top of the cabinet body, and a sealing door hinged to the surface of the cabinet body; a water-blocking component, the top of which is fixedly connected to the bottom of the cabinet body, for preventing rainwater from entering the control cabinet through the air inlet at the bottom of the frequency converter control cabinet; and a ventilation component, the top of which is fixedly connected to the top of the inner wall of the cabinet body, for replacing the airflow inside the frequency converter control cabinet. This utility model relates to the field of control cabinet technology. This waterproof frequency converter control cabinet, utilizing the water-blocking component, causes rainwater to rise, and the float plate simultaneously moves the conical plug upwards, directly sealing the air inlet and effectively preventing rainwater from entering the interior of the cabinet.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, specifically a waterproof frequency converter control cabinet. Background Technology

[0002] To prevent overheating of internal electrical components, the control cabinet is designed with air inlets and outlets for ventilation and heat dissipation. Their placement follows the natural convection law of "hot air rising and cold air sinking." Cold air, being denser, naturally enters from below, while hot air, being less dense, tends to rise naturally.

[0003] Patent CN219228287U discloses a waterproof frequency converter control cabinet for outdoor operation, comprising a hollow cabinet body. Ventilation slots are located on the left and right sides of the upper side of the cabinet body, and a hollow exhaust pipe is installed inside each ventilation slot. The exhaust pipe is fixedly connected to the cabinet body, and a hinged closed door is attached to the front of the cabinet body. This patent effectively solves the problem that when outdoor control cabinets are exposed to rain, rainwater can easily enter the cabinet body because the ventilation holes are located on the lower side of the cabinet. This can cause water to come into contact with the electrical components of the frequency converter, resulting in short circuits and damage. Furthermore, traditional closed doors require repeated closing when inspecting the instruments inside the cabinet, increasing the workload for maintenance personnel.

[0004] As shown in the above technology, when the outdoor frequency converter control cabinet is in use, if there is too much rain outside, the rainwater will directly enter the inside of the frequency converter control cabinet through the air inlet at the bottom of the control cabinet, which will seriously affect the safety of the equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof frequency converter control cabinet, which solves the problem that when outdoor frequency converter control cabinets are in use, excessive rainwater can directly enter the cabinet through the air inlet, seriously affecting the safety of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof frequency converter control cabinet, comprising:

[0007] The cabinet has a support frame fixedly connected to its top, a protective cover fixedly connected to the top of the support frame, an air inlet at the bottom of the cabinet, an air outlet at the top of the cabinet, and a sealed door hinged to the surface of the cabinet.

[0008] A water-blocking assembly, the top of which is fixedly connected to the bottom of the cabinet, is used to prevent rainwater from entering the control cabinet through the air inlet at the bottom of the frequency converter control cabinet.

[0009] A ventilation assembly, the top of which is fixedly connected to the top of the inner wall of the cabinet, is used to replace the airflow inside the frequency converter control cabinet.

[0010] Preferably, the water-blocking component includes a base frame fixedly connected to the bottom of the cabinet, and a guide frame fixedly connected to the inner wall of the base frame.

[0011] Preferably, a float plate is slidably connected to the inner wall of the guide frame, and a conical plug is fixedly connected to the top of the float plate.

[0012] Preferably, the ventilation assembly includes a fan fixedly connected to the top of the inner wall of the cabinet, and the air outlet of the fan is connected to an air outlet pipe.

[0013] Preferably, an air inlet pipe is provided through the back of the cabinet, and one end of the air inlet pipe is connected to an internal pipe.

[0014] Preferably, a filter screen is movably connected to the inner wall of the air inlet pipe, a limit ring is fixedly connected to the inner wall of the air inlet pipe, an installation groove block is fixedly connected to the surface of the air inlet pipe, an elastic sleeve is rotatably connected to one side of the installation groove block, an accompanying bending rod is fixedly connected to one side of the elastic sleeve, and a stop block is fixedly connected to one end of the accompanying bending rod.

[0015] This utility model provides a waterproof frequency converter control cabinet. Compared with the prior art, it has the following advantages:

[0016] 1. This waterproof frequency converter control cabinet utilizes a water-blocking component. When rainwater causes the water level to rise, the float will simultaneously move the conical plug upwards. The conical plug can directly block the air inlet, effectively preventing rainwater from entering the cabinet. When the water level drops, the float and the conical plug will also drop simultaneously. The structure is very simple and reliable.

[0017] 2. This waterproof frequency converter control cabinet utilizes a ventilation system. When the fan is working, air is guided into the cabinet through the inlet pipe and internal pipe, and finally discharged through the outlet pipe. This effectively increases the airflow path, enabling effective heat dissipation even when the air inlet is blocked. The bent inlet pipe is positioned at a high level, effectively preventing rainwater from entering and further improving the reliability of the device. Furthermore, the filter screen effectively filters dust, preventing it from entering the cabinet and affecting the safety of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is an exploded view of the elastic sleeve and stop block of this utility model.

[0022] In the diagram: 1. Cabinet; 2. Support frame; 3. Protective cover; 4. Air inlet; 5. Air outlet; 6. Sealed door; 7. Water-blocking assembly; 71. Base frame; 72. Guide frame; 73. Float plate; 74. Conical plug; 8. Ventilation assembly; 81. Fan; 82. Air inlet pipe; 83. Filter screen; 84. Limiting ring; 85. Mounting slot; 86. Elastic sleeve; 87. Accompanying bending rod; 88. Stop block; 89. Air outlet pipe; 810. Internal pipe. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides two technical solutions:

[0025] Example 1: A waterproof frequency converter control cabinet, comprising:

[0026] Cabinet 1, with a support frame 2 fixedly connected to the top of cabinet 1, and a protective cover 3 fixedly connected to the top of support frame 2. An air inlet 4 is provided at the bottom of cabinet 1. The air inlet 4 is circular and matches the conical plug 74. An air outlet 5 is provided at the top of cabinet 1. Low-temperature air enters cabinet 1 through air inlet 4, carries away the heat inside the frequency converter control cabinet, and then the hot air is discharged through air outlet 5. A sealing door 6 is hinged to the surface of cabinet 1.

[0027] Water-blocking component 7, the top of which is fixedly connected to the bottom of cabinet 1, is used to prevent rainwater from entering the control cabinet through the air inlet 4 at the bottom of the frequency converter control cabinet.

[0028] The ventilation component 8 is fixedly connected to the top of the inner wall of the cabinet 1. The ventilation component 8 is used to replace the airflow inside the frequency converter control cabinet. With the setting of the water-blocking component 7, when the water level rises due to rainwater, the float 73 will simultaneously drive the conical plug 74 to move upward. The conical plug 74 can directly block the air inlet 4, effectively preventing rainwater from entering the interior of the cabinet 1. When the water level drops, the float 73 and the conical plug 74 will also drop simultaneously. The structure is very simple and reliable.

[0029] Example 2 differs from Example 1 primarily in that: a waterproof frequency converter control cabinet includes a water-blocking component 7 comprising a base frame 71 fixedly connected to the bottom of the cabinet body 1, a guide frame 72 fixedly connected to the inner wall of the base frame 71, and a float 73 slidably connected to the inner wall of the guide frame 72. The float 73 has a density much less than water and includes, but is not limited to, foam board. A conical plug 74 is fixedly connected to the top of the float 73. A ventilation component 8 comprises a fan 81 fixedly connected to the top of the inner wall of the cabinet body 1. The outlet of the fan 81 is connected to an outlet pipe 89, the length of which extends from the top to the bottom of the cabinet body 1. An inlet pipe 82 is provided through the back of the cabinet body 1. The inlet pipe 82 is bent, with its far end pointing vertically downwards to prevent rainwater from entering. One end of the inlet pipe 82 is connected to an internal pipe 810, and one side of the internal pipe 810 is connected to the inlet pipe 82. Its bottom is close to the bottom of the inner wall of the cabinet body 1, and two... The air inlet duct 82 has a filter screen 83 movably connected to its inner wall, a limit ring 84 fixedly connected to its inner wall, and a mounting groove block 85 fixedly connected to its surface. An elastic sleeve 86 is rotatably connected to one side of the mounting groove block 85, and an accompanying bending rod 87 is fixedly connected to one side of the elastic sleeve 86. A stop block 88 is fixedly connected to one end of the accompanying bending rod 87. With the ventilation assembly 8, when the fan 81 is working, air is guided into the interior of the cabinet 1 through the air inlet duct 82 and the internal pipe 810, and finally discharged through the air outlet duct 89. This effectively increases the airflow path, enabling effective heat dissipation even when the air inlet vent 4 is blocked. The bent air inlet duct 82 is positioned at a high level, which effectively prevents rainwater from entering and further improves the reliability of the device. Furthermore, the filter screen 83 filters dust, preventing dust from entering the interior of the cabinet 1 and affecting the safety of the device.

[0030] A water sensor is installed at the bottom of cabinet 1, and a microcontroller is installed inside cabinet 1. Once the water level rises to the bottom of cabinet 1, the fan 81 is turned on through the microcontroller. A waterproof silicone gasket is installed on the inner wall of the sealing door 6.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] During operation, the sealing door 6 is closed, and the internal equipment of the cabinet 1 operates normally. Cold air enters the cabinet 1 through the air inlet 4, and hot air is discharged through the air outlet 5. When it rains outside, the rainwater is isolated by the protective cover 3 on the top of the support frame 2. When the water level rises, the float 73 is lifted by the buoyancy of the water, which drives the conical plug 74 to block the air inlet 4. The float 73 floats up along the inner wall of the guide frame 72. After the sensor at the bottom of the cabinet 1 receives the water signal, the fan 81 starts. Air passes through the filter screen 83 in the air inlet pipe 82 and finally enters the interior of the cabinet 1 through the internal pipe 810. The air is finally discharged through the air outlet pipe 89 on the top of the fan 81. When replacing the filter screen 83, pull down the accompanying bending rod 87 and rotate it. The stop block 88 separates from the filter screen 83, and the elastic sleeve 86 is squeezed. After removing the filter screen 83, replace it. Make sure the top of the new filter screen 83 fits tightly against the bottom of the limit ring 84. Return the stop block 88 to its original position. When the device is completely finished, restore the device to its original state.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof frequency converter control cabinet, characterized in that, include: Cabinet (1), the top of the cabinet (1) is fixedly connected to a support frame (2), the top of the support frame (2) is fixedly connected to a protective cover (3), the bottom of the cabinet (1) is provided with an air inlet (4), the top of the cabinet (1) is provided with an air outlet (5), and the surface of the cabinet (1) is hinged with a sealing door (6). Water-blocking component (7), the top of which is fixedly connected to the bottom of the cabinet (1), the water-blocking component (7) is used to prevent rainwater from entering the control cabinet from the air inlet (4) at the bottom of the frequency converter control cabinet; The ventilation assembly (8) is fixedly connected to the top of the inner wall of the cabinet (1) and is used to replace the airflow inside the frequency converter control cabinet.

2. The waterproof frequency converter control cabinet according to claim 1, characterized in that: The water-blocking component (7) includes a base frame (71) fixedly connected to the bottom of the cabinet (1), and a guide frame (72) fixedly connected to the inner wall of the base frame (71).

3. A waterproof frequency converter control cabinet according to claim 2, characterized in that: The inner wall of the guide frame (72) is slidably connected to a float plate (73), and the top of the float plate (73) is fixedly connected to a conical plug (74).

4. A waterproof frequency converter control cabinet according to claim 1, characterized in that: The ventilation assembly (8) includes a fan (81) fixedly connected to the top of the inner wall of the cabinet (1), and the air outlet of the fan (81) is connected to an air outlet pipe (89).

5. A waterproof frequency converter control cabinet according to claim 1, characterized in that: An air inlet pipe (82) is provided through the back of the cabinet (1), and one end of the air inlet pipe (82) is connected to an internal pipe (810).

6. A waterproof frequency converter control cabinet according to claim 5, characterized in that: A filter screen (83) is movably connected to the inner wall of the air inlet pipe (82). A limit ring (84) is fixedly connected to the inner wall of the air inlet pipe (82). An installation groove block (85) is fixedly connected to the surface of the air inlet pipe (82). An elastic sleeve (86) is rotatably connected to one side of the installation groove block (85). An accompanying bending rod (87) is fixedly connected to one side of the elastic sleeve (86). A stop block (88) is fixedly connected to one end of the accompanying bending rod (87).

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