A dehumidifying device for a distribution box

Abstract

This invention discloses a dehumidification device for a distribution box, belonging to the technical field of distribution box technology. The dehumidification device for a distribution box includes a box body and a door hinged to the box body. The box body has an air inlet and an air outlet. A mounting bracket is installed inside the air inlet, and a drive motor is installed inside the mounting bracket. The output end of the drive motor is connected to a drive shaft, and a fan blade is installed on the drive shaft. A support plate is fixedly connected to the inner wall of the box body. A recessed hole is opened in the middle of the support plate, and a dehumidification box is slidably mounted on the support plate. A drive assembly for driving the displacement of the dehumidification box is installed on the drive shaft. An air inlet shell is provided at the air inlet, and an insulation shell is fitted outside the air inlet shell. An air outlet is opened on the insulation shell. This invention facilitates the thorough drying of humid air entering the box from the outside, preventing cold air from entering the box and coming into contact with high-temperature electrical components. Excessive temperature difference can lead to condensation and damage to electrical components.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, and in particular to a dehumidification device for distribution boxes. Background Technology

[0002] Distribution boxes are used in power systems for power generation, transmission, distribution, energy conversion, and consumption, playing a role in switching, control, and protection. Distribution boxes occupy a very important position in the entire power industry. During long-term operation, distribution boxes are equipped with fans for ventilation and heat dissipation, expelling hot air from inside the box to the outside. However, in this process, relatively humid air from the outside of the box may be drawn into the box. The large temperature difference between this humid air and the hot electrical components inside the box can cause condensation, leading to damage to the electrical components.

[0003] Chinese patent CN202121092937.8 discloses a dehumidification device for a distribution box. This device uses calcium chloride granules at the air inlet to dry humid air, thus dehumidifying the air entering the box. However, it has certain drawbacks in practical use. The calcium chloride granules stacked inside the mesh cover react directly with the outermost humid air. Once the outer granules are saturated with water, the inner, covered granules have difficulty reacting with the humid air, affecting the absorption of moisture. Consequently, the air entering the box still contains some moisture, resulting in poor dehumidification. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a dehumidification device for power distribution boxes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dehumidification device for a distribution box includes a box body and a door hinged to the box body. The box body has an air inlet and an air outlet. A mounting bracket is installed inside the air inlet, and a drive motor is installed inside the mounting bracket. The output end of the drive motor is connected to a drive shaft, and a fan blade is installed on the drive shaft. A support plate is fixedly connected to the inner wall of the box body. A recessed hole is opened in the middle of the support plate. A dehumidification box is slidably installed on the support plate. A drive assembly for driving the displacement of the dehumidification box is installed on the drive shaft. An air inlet shell is provided at the air inlet. An insulation shell is fitted outside the air inlet shell. An air outlet is opened on the insulation shell, and an air guide pipe connects the insulation shell and the air outlet.

[0007] As a preferred technical solution of this application, the drive assembly includes a first connecting plate fixed on the drive shaft, a second connecting plate rotatably connected to the end of the first connecting plate away from the drive shaft via a pin, and a connecting rod movably connected to the end of the second connecting plate away from the first connecting plate, the connecting rod being fixedly connected to the dehumidification box.

[0008] As a preferred technical solution of this application, baffles are symmetrically arranged on both sides of the support plate, and the dehumidification box is slidably connected between the two baffles.

[0009] As a preferred technical solution of this application, the dehumidifier box has air holes on both the upper and lower sides, and the dehumidifier box is filled with calcium chloride particles for dehumidification.

[0010] As a preferred technical solution of this application, the air inlet housing is provided with a conical air inlet bucket, the air inlet end of the conical air inlet bucket is connected to a spiral tube, the air outlet end of the spiral tube is connected to the air inlet, and the heat insulation housing is provided with a filter screen that cooperates with the conical air inlet bucket.

[0011] As a preferred technical solution of this application, the top of the box is connected to several uprights, and the top of the uprights is provided with a rain shield, which is placed above the air inlet.

[0012] Compared with the prior art, the present invention provides a dehumidification device for a distribution box, which has the following beneficial effects:

[0013] 1. The dehumidification device used in this distribution box uses a drive component to drive the dehumidification box to swing back and forth on the support plate, so that the desiccant in the dehumidification box can fully react with the humid air and absorb the moisture in the humid air. This solves the problem in the existing technology where the desiccant is piled up, so that the humid air only reacts with the desiccant piled up on the outside, while the desiccant inside that is blocked cannot absorb moisture from the humid air.

[0014] 2. The dehumidification device used in this distribution box connects to the insulation shell through an air duct at the air outlet, allowing the higher-temperature air discharged from the box to enter the insulation shell and exit through the air outlet. During this process, the hot air inside the insulation shell preheats the relatively humid cold air inside the air inlet shell, further achieving the drying effect of the cold air and solving the problem of poor dehumidification effect in the existing technology.

[0015] 3. The dehumidification device used in this distribution box extends the flow time of humid air within a limited distance by installing a spiral tube inside the air inlet shell, allowing the insulation shell to fully preheat and dry the cold air. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one structure of the present invention;

[0017] Figure 2 for Figure 1 A cross-sectional schematic diagram of the structure in the diagram;

[0018] Figure 3 This is a cross-sectional schematic diagram of another structure of the present invention;

[0019] Figure 4 For this Figure 1 A schematic diagram of the external structure of the air inlet;

[0020] Figure 5 This is a cross-sectional structural diagram of the support plate and dehumidification box of the present invention.

[0021] In the picture:

[0022] 1. Housing; 101. Door; 2. Air inlet; 201. Mounting bracket; 3. Air outlet; 4. Drive motor; 401. Drive shaft; 5. Fan blade; 6. Support plate; 601. Recessed hole; 602. Baffle; 7. Dehumidifier box; 701. Air vent; 8. Air inlet housing; 801. Conical air inlet hopper; 802. Spiral tube; 9. Insulation housing; 901. Air outlet; 902. Filter screen; 10. Air guide pipe; 11. First connecting plate; 111. Second connecting plate; 112. Connecting rod; 12. Upright pole; 121. Rain shield. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example 1:

[0027] Reference Figure 1-4 A dehumidification device for a distribution box includes a box body 1 and a door 101 hinged to the box body 1. The box body 1 has an air inlet 2 and an air outlet 3. A mounting bracket 201 is installed inside the air inlet 2. A drive motor 4 is installed inside the mounting bracket 201. The output end of the drive motor 4 is connected to a drive shaft 401. A fan blade 5 is installed on the drive shaft 401. A support plate 6 is fixedly connected to the inner wall of the box body 1. A recessed hole 601 is opened in the middle of the support plate 6. A dehumidification box 7 is slidably installed on the support plate 6. A drive assembly for driving the displacement of the dehumidification box 7 is installed on the drive shaft 401. An air inlet shell 8 is installed at the air inlet 2. An insulation shell 9 is sleeved on the outside of the air inlet shell 8. An air outlet 901 is opened on the insulation shell 9. An air guide pipe 10 connects the insulation shell 9 and the air outlet 3.

[0028] Specifically, the electrical components inside the housing 1 generate heat during operation, raising the internal temperature of the housing 1. By controlling the operation of the drive motor 4, the output of the drive motor 4 drives the fan blade 5 to rotate via the drive shaft 401, drawing air from outside the housing 1 into the housing 1 through the air inlet 2. The relatively humid air is absorbed after passing through the dehumidification box 7. When the drive shaft 401 rotates, it drives the dehumidification box 7 to move back and forth through the drive assembly, causing the desiccant inside the dehumidification box 7 to shake and fully react with the humid air, absorbing the moisture in the humid air. This solves the problem in the prior art where the desiccant accumulates together, causing the humid air to react only with the desiccant piled up on the outside, while the desiccant inside, which is blocked, cannot absorb moisture from the humid air. Furthermore, the air entering the housing 1 discharges the originally warm air inside the housing 1 through the air outlet 3. The hot air enters the insulation shell 9 through the air guide pipe 10, causing the insulation shell 9 to preheat the relatively humid air inside the air inlet shell 8, further improving the dehumidification effect of the housing 1.

[0029] Figure 3 This is a cross-sectional view of another structure of the present invention, and... Figure 2The difference in structure lies in that the air guide pipe 10 does not carry hot gas into the insulation shell 9, but instead passes directly through the air inlet shell 8. Specifically, the air inlet shell 8 has a first opening and a second opening on its side wall, with the first opening higher than the second. After the air guide pipe 10 enters the air inlet shell 8 through the first opening, its outlet 901 extends out through the second opening. This allows the hot gas inside the air guide pipe to spiral downwards after reaching the air inlet shell, increasing the path length of the hot gas and guiding the condensate on the pipe wall downwards. This structure is more advanced than... Figure 2 The structure within it can effectively solve the problem of condensate drainage.

[0030] Example 2:

[0031] Reference Figure 2-5 A dehumidification device for a distribution box is basically the same as in Embodiment 1. Furthermore, the drive assembly includes a first connecting plate 11 fixed on a drive shaft 401. A second connecting plate 111 is rotatably connected to the end of the first connecting plate 11 away from the drive shaft 401 via a pin. A connecting rod 112 is movably connected to the end of the second connecting plate 111 away from the first connecting plate 11. The connecting rod 112 is fixedly connected to the dehumidification box 7.

[0032] Furthermore, baffles 602 are symmetrically arranged on both sides of the support plate 6, and the dehumidification box 7 is slidably connected between the two baffles 602.

[0033] Specifically, when the drive shaft 401 rotates, it drives the first connecting plate 11 to rotate. The first connecting plate 11 drives the second connecting plate 111, which is rotatably connected to it, to move. The second connecting plate 111 pulls the dehumidification box 7 back and forth between the two baffles 602 through the connecting rod 112, thereby causing the desiccant in the dehumidification box 7 to sway left and right, so that it can fully react with the humid air.

[0034] Example 3:

[0035] Reference Figure 2-5 A dehumidification device for a distribution box is basically the same as that in Embodiment 2. Furthermore, the dehumidification box 7 has air holes 701 on both the upper and lower sides, and the dehumidification box 7 is filled with calcium chloride particles for dehumidification.

[0036] Specifically, air holes 701 are provided on both the top and bottom sides of the dehumidification box 7 to facilitate the entry and exit of air. After the humid air passes through the dehumidification box 7, the calcium chloride particles inside the dehumidification box 7 absorb the moisture in the air, making the air dry and preventing the cabinet 1 from becoming damp.

[0037] Example 4:

[0038] Reference Figure 2-5A dehumidification device for a distribution box is basically the same as that in Embodiment 2, but further, a conical air inlet hopper 801 is provided on the air inlet housing 8, the air inlet end of the conical air inlet hopper 801 is connected to a spiral tube 802, the air outlet end of the spiral tube 802 is connected to the air inlet 2, and a filter screen 902 that cooperates with the conical air inlet hopper 801 is provided on the heat insulation housing 9.

[0039] Specifically, the warmer air inside the housing 1 is discharged from the air outlet 3 and enters the insulation shell 9 through the air guide pipe 10. The humid air from the outside, drawn in by the rotating fan blade 5, enters the spiral tube 802 through the conical air inlet 801. The spiral tube 802 extends the flow time of the humid air within a limited distance, allowing the insulation shell 9 to fully preheat and dry the cold air.

[0040] Example 5:

[0041] Reference Figure 1 , 2 3. A dehumidification device for a distribution box, which is basically the same as in embodiment 1, but further, the top of the box 1 is connected to several uprights 12, and the top of the uprights 12 is provided with a rain shield 121, which is placed on the upper side of the air inlet 2.

[0042] Specifically, the rain shield 121 can effectively prevent rainwater from entering the interior of the box 1 through the air inlet 2, thus preventing the interior of the box 1 from becoming damp.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dehumidifying device for a distribution box, comprising a box body (1) and a box door (101) hingedly arranged on the box body (1), characterized in that, The housing (1) is provided with an air inlet (2) and an air outlet (3). An installation frame (201) is provided inside the air inlet (2). A drive motor (4) is provided inside the installation frame (201). The output end of the drive motor (4) is connected to a drive shaft (401). A fan blade (5) is provided on the drive shaft (401). A support plate (6) is fixedly connected to the inner wall of the housing (1). A recessed hole (601) is provided in the middle of the support plate (6). A dehumidification box (7) is slidably provided on the support plate (6). A drive assembly for driving the dehumidification box (7) is provided on the drive shaft (401). An air inlet housing (8) is provided at the air inlet (2). An insulation housing (9) is sleeved on the outside of the air inlet housing (8). An air outlet (901) is provided on the insulation housing (9). A duct (10) is connected between the insulation housing (9) and the air outlet (3). The air inlet housing (8) is provided with a conical air inlet hopper (801), the air inlet end of the conical air inlet hopper (801) is connected to a spiral tube (802), the air outlet end of the spiral tube (802) is connected to the air inlet (2), and the heat insulation housing (9) is provided with a filter screen (902) that cooperates with the conical air inlet hopper (801).

2. The dehumidifying device for a distribution box according to claim 1, wherein The drive assembly includes a first connecting plate (11) fixed on the drive shaft (401), and a second connecting plate (111) is rotatably connected to the end of the first connecting plate (11) away from the drive shaft (401) via a pin. A connecting rod (112) is movably connected to the end of the second connecting plate (111) away from the first connecting plate (11), and the connecting rod (112) is fixedly connected to the dehumidification box (7).

3. A dehumidification device for a distribution box according to claim 2, characterized in that, The support plate (6) is symmetrically provided with baffles (602) on both sides, and the dehumidification box (7) is slidably connected between the two baffles (602).

4. The dehumidifier for an electrical distribution box according to claim 3, wherein The dehumidification box (7) has air holes (701) on both the upper and lower sides, and the dehumidification box (7) is filled with calcium chloride particles for dehumidification.

5. The dehumidifier device for an electrical distribution box according to claim 3, wherein The air inlet housing (8) is provided with a conical air inlet hopper (801), the air inlet end of the conical air inlet hopper (801) is connected to a spiral tube (802), the air outlet end of the spiral tube (802) is connected to the air inlet (2), and the heat insulation housing (9) is provided with a filter screen (902) that cooperates with the conical air inlet hopper (801).

6. The dehumidifier device for an electrical distribution box according to claim 1, wherein The top of the box (1) is connected to several uprights (12), and the top of the uprights (12) is provided with a rain shield (121), which is placed on the upper side of the air inlet (2).

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