An electrical control device

Abstract

The present invention relates to the field of electrical control technology and discloses an electrical control device comprising an electrical control box having heat dissipation holes at both ends. Protective frames are provided at both ends of the electrical control box, and dust filter plates for filtering dust from the air and dehumidification plates for absorbing moisture from the air are provided within the protective frames to prevent dust or moisture from entering the heat dissipation holes. The dust filter plates and dehumidification plates filter and dehumidify the outside air entering the heat dissipation holes, thereby preventing moisture and dust accumulation on components within the electrical control box and extending their service life.

Description

Technical Field

[0001] The present invention relates to the field of electrical control technology, and more particularly to an electrical control device. Background Art

[0002] At present, large-angle belts are mostly used to transport water slag, but the water slag will generate dust during the transportation process. The dust can easily enter the interior of the electrical control device through the heat dissipation holes. At the same time, moisture in the external environment can also easily enter the interior of the electrical control device through the heat dissipation holes, resulting in dust accumulation and excessive moisture in the electrical control device, thereby reducing the service life of its internal components.

[0003] In summary, how to extend the service life of internal components of electrical control devices is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an electrical control device, which has a dust removal filter plate and a moisture removal plate outside the heat dissipation hole, which can effectively prevent dust and moisture from entering the electrical control box, thereby extending the service life of the electronic components therein.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An electrical control device includes an electrical control box with heat dissipation holes at both ends, and protective frames at both ends of the electrical control box. A dust removal filter plate for filtering dust in the air and a dehumidification plate for absorbing moisture in the air are provided in the protective frames to prevent dust or moisture in the air from entering the heat dissipation holes.

[0007] Preferably, the protective frame includes a bottom plate, two side plates and a mounting plate for mounting the dust removal filter plate, the mounting plate is parallel to the plane where the heat dissipation holes are located, and the bottom plate and the side plates are vertically connected to the outer edge of the mounting plate;

[0008] The mounting plate and the side plates on both sides together form a placement hole for installing the dehumidification plate. The dehumidification plate is detachably mounted in the placement hole through the top plate, and the dust removal filter plate is detachably mounted in the mounting hole of the mounting plate.

[0009] Preferably, a connecting rod is provided between the dust removal filter plate and the moisture removal plate, and both ends of the connecting rod are hingedly connected to the dust removal filter plate and the moisture removal plate respectively, and the angle between the connecting rod and the mounting plate is an acute angle;

[0010] A pressing plate is provided at the lower end of the dehumidification plate, and a return spring is provided between the pressing plate and the bottom plate. One end of the return spring is connected to the pressing plate or the bottom plate. When the dust removal filter plate and the dehumidification plate are installed in place, the return spring is compressed.

[0011] When the dust removal filter plate is subjected to pressure directed toward the moisture removal plate, the dust removal filter plate is released from the mounting plate, and the moisture removal plate is rebounded under the action of the return spring.

[0012] Preferably, the return springs are evenly distributed along the length direction of the pressure plate.

[0013] Preferably, a pressing frame plate is detachably provided in the mounting plate, the dust filter plate is installed in a fixed frame of the pressing frame plate, and the connecting rod is hingedly connected to a side of the pressing frame plate relatively close to the dehumidification plate.

[0014] Preferably, a vertically arranged guide rod is provided on one side of the dehumidification plate relatively close to the dust removal filter plate, support plates are provided at both ends of the guide rod, a hinge block at one end of the connecting rod is sleeved outside the guide rod, and a spring is provided between the support plate and the hinge block.

[0015] Preferably, the guide rods are provided on both sides of the dehumidification plate, the outer sleeve of the guide rods is provided with two connecting rods, the spring is provided between the hinge blocks of the two connecting rods, and the two connecting rods are symmetrically arranged about the midpoint of the guide rods.

[0016] Preferably, the dehumidification plate is clamped between the first positioning frame plate and the second positioning frame plate, and the first positioning frame plate and the second positioning frame plate are attracted by magnets.

[0017] Preferably, bar magnets are provided at the upper and lower ends of the first positioning frame plate and the second positioning frame plate.

[0018] Preferably, the shape and size of the mounting plate are the same as the shape and size of the end face of the electrical control box.

[0019] The electrical control device provided by the present invention can use a dust removal filter plate and a moisture removal plate to filter dust and remove moisture from the external air entering the heat dissipation hole, thereby preventing the components in the electrical control box from getting damp or dust from accumulating on the surface of the components, which is beneficial to extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a specific embodiment of the electrical control device provided by the present invention;

[0022] Figure 2 for Figure 1 A schematic cross-sectional view in the main viewing direction;

[0023] Figure 3 This is a schematic diagram of the assembly of the dust removal filter plate, moisture removal plate and connecting rod;

[0024] Figure 4 for Figure 3 Explosion diagram of

[0025] Figure 5 Schematic diagram of the structure of the dehumidification plate;

[0026] Figure 6 Schematic diagram of the assembly of the guide rod and the connecting rod;

[0027] Figure 7 Schematic diagram of the connecting rod structure.

[0028] Figure 1-Figure 7 middle:

[0029] 1 is an electrical control box, 11 is a heat dissipation hole, 2 is a protective frame, 3 is a dust removal filter plate, 31 is a pressing frame plate, 311 is a fixed frame, 4 is a dehumidification plate, 41 is a first positioning frame plate, 42 is a second positioning frame plate, 43 is a magnet, 44 is a top plate, 45 is a pressure plate, 46 is a return spring, 5 is a connecting rod, 51 is a hinge block, 52 is a moving block, 6 is a guide rod, 61 is a support plate, and 62 is a spring. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The core of this application document is to provide an electrical control device, which has a dust removal filter plate and a moisture removal plate outside the heat dissipation hole, which can effectively prevent dust and moisture from entering the electrical control box, which is beneficial to extending the service life of the electronic components therein.

[0032] Please refer to Figure 1-Figure 7 , a schematic structural diagram of a specific embodiment of the electrical control device provided by the present invention; Figure 2 for Figure 1 A schematic cross-sectional view in the main viewing direction; Figure 3 This is a schematic diagram of the assembly of the dust removal filter plate, moisture removal plate and connecting rod; Figure 4 for Figure 3 Explosion diagram of Figure 5Schematic diagram of the structure of the dehumidification plate; Figure 6 Schematic diagram of the assembly of the guide rod and the connecting rod; Figure 7 Schematic diagram of the connecting rod structure.

[0033] The electrical control device provided in this application document includes an electrical control box 1 with heat dissipation holes 11 at both ends, and a protective frame 2 is provided at both ends of the electrical control box 1. The protective frame 2 is provided with a dust filter plate 3 for filtering dust in the air and a dehumidification plate 4 for absorbing moisture in the air to prevent dust or moisture in the air from entering the heat dissipation holes 11.

[0034] Please refer to Figure 2 Usually, heat dissipation holes 11 are evenly distributed along the height direction of the electrical control box 1 so as to evenly dissipate heat from the electrical control box 1; the specific number, shape and size of the heat dissipation holes 11 are determined according to the heat dissipation requirements of each component in the electrical control box 1 in actual production to maintain a relatively stable temperature in the electrical control box 1.

[0035] The protective frame 2 is used to install and fix the dust filter plate 3 and the moisture removal plate 4, and to arrange the dust filter plate 3 and the moisture removal plate 4 outside the heat dissipation hole 11 so that the outside air can enter the heat dissipation hole 11 after passing through the dust filter plate 3 and the moisture removal plate 4.

[0036] The number and size of protective frames 2 are determined based on the coverage of the cooling holes 11 in actual production, ensuring that outside air must pass through the dust filter plate 3 and the moisture removal plate 4 before entering the cooling holes 11. The correspondence between protective frames 2 and cooling holes 11 is not limited; there can be a one-to-one correspondence between protective frames 2 and cooling holes 11, or a single protective frame 2 can correspond to all cooling holes 11 at one end.

[0037] Preferably, the shape and size of the protective frame 2 can be set to be the same as the shape and size of the end face of the electrical control box 1, so that the dust filter plate 3 and moisture removal plate 4 in a single protective frame 2 can cover the entire range of the heat dissipation hole 11 at one end of the electrical controller 1.

[0038] The protective frame 2 can be fixedly connected to both ends of the electrical control box 1 by welding or the like, or can be connected to the electrical control box 1 by common detachable connection methods such as bolt connection, or can be set as an integral structure with the electrical control box 1.

[0039] Taking into account the regular maintenance and replacement needs of the dust filter plate 3 and the dehumidification plate 4, when the protective frame 2 is fixedly connected to the electrical control box 1 or the two are an integrated structure, the dust filter plate 3 and the dehumidification plate 4 are usually provided with a detachable connection to the protective frame 2 so as to regularly clean the dust filter plate 3 and replace the dehumidification plate 4.

[0040] The relative position relationship between the dust removal filter plate 3 and the moisture removal plate 4 is not limited and can be as follows: Figure 2As shown, the dust removal filter plate 3 is set relatively far away from the heat dissipation hole 11, and the moisture removal plate 4 is relatively close to the heat dissipation hole 11; of course, the dust removal filter plate 3 can also be set relatively close to the heat dissipation hole 11, and the moisture removal plate 4 can be relatively far away from the heat dissipation hole 11.

[0041] The sizes of the dust filter plate 3 and the moisture-removing plate 4 are determined according to the coverage of the heat dissipation holes 11 of the electrical control box 1; the specific materials, structures, shapes and sizes of the dust filter plate 3 and the moisture-removing plate 4 are determined according to the needs in actual production and with reference to the existing technology, and will not be repeated here.

[0042] In this embodiment, the dust filter plate 3 and the moisture removal plate 4 can filter dust and remove moisture from the outside air entering the heat dissipation hole 11, thereby preventing the components in the electrical control box 1 from getting damp or dust accumulating, which is beneficial to extending their service life.

[0043] Based on the above embodiment, the connection method of the protective frame 2, the dust filter plate 3 and the moisture removal plate 4 is defined. The protective frame 2 may include a bottom plate, two side plates and a mounting plate for mounting the dust filter plate 3. The mounting plate is parallel to the plane where the heat dissipation holes 11 are located, and the bottom plate and the side plates are perpendicularly connected to the outer edge of the mounting plate.

[0044] The mounting plate and the side plates on both sides together form a placement hole for installing the dehumidification plate 4. The dehumidification plate 4 is detachably mounted in the placement hole through the top plate 44. The dust removal filter plate 3 is detachably mounted in the mounting hole of the mounting plate.

[0045] Please refer to Figure 1 The mounting plate, bottom plate and two side plates together form a protective frame 2. For the connection method between the three, please refer to the connection method of the common box structure, which will not be repeated here; the dust removal filter plate 3 is snapped into the mounting hole of the mounting plate, and the top plate 44 of the moisture removal plate 4 is arranged in the placement hole at the top of the protective frame 2.

[0046] It should be noted that the top plate 44 of the moisture-removing plate 4 may only be in contact with the upper end surface of the protection frame 2 , or may be connected to the upper end surface of the protection frame 2 by bolt connection or the like.

[0047] During assembly, first snap the dust filter plate 3 into the mounting hole of the mounting plate, and then place the top plate 44 of the moisture removal plate 4 into the placement hole of the protective frame 2 to close the protective frame 2 and prevent the outside air from directly entering the heat dissipation hole 11 without dust removal and moisture absorption.

[0048] During disassembly, firstly, the top plate 44 of the moisture removal plate 4 is taken out, the placement hole of the protection frame 2 is opened, and then the dust removal filter plate 3 is taken out from the placement hole.

[0049] In this embodiment, the dust removal filter plate 3 and the moisture removal plate 4 are both detachably connected to the protective frame 2. The connection method is simple and easy to disassemble and assemble, which facilitates the regular cleaning and replacement of the dust removal filter plate 3 and the moisture removal plate 4, and is beneficial to maintaining the filtering capacity and moisture absorption capacity of the protective frame 2.

[0050] On the basis of the above embodiment, in order to quickly remove the dust filter plate 3 and the moisture removal plate 4, a connecting rod 5 can be provided between the dust filter plate 3 and the moisture removal plate 4, and the two ends of the connecting rod 5 are hingedly connected to the dust filter plate 3 and the moisture removal plate 4 respectively, and the angle between the connecting rod 5 and the mounting plate is an acute angle;

[0051] A pressure plate 45 is provided at the lower end of the dehumidification plate 4, and a return spring 46 is provided between the pressure plate 45 and the bottom plate. One end of the return spring 46 is connected to the pressure plate 45 or the bottom plate. When the dust filter plate 3 and the dehumidification plate 4 are installed in place, the return spring 46 is compressed.

[0052] When the dust filter plate 3 is subjected to pressure directed toward the moisture removal plate 4 , the dust filter plate 3 is released from the mounting plate, and the moisture removal plate 4 is rebounded by the return spring 46 .

[0053] Please refer to Figure 2 The dust removal filter plate 3 and the moisture removal plate 4 are connected by a connecting rod 5, and the connecting rod 5 is inclined relative to the mounting plate of the protective frame 2; both ends of the connecting rod 5 are provided with hinge blocks 51, and the dust removal filter plate 3 and the moisture removal plate 4 are connected to the hinge blocks 51; the hinge blocks 51 are mostly set to a U-shaped structure, and the hinge block 51 includes a hinge block base plate and side plates vertically connected to both sides of the hinge block base plate, and both side plates of the hinge block 51 are provided with rotating pin holes for installing rotating pins.

[0054] A return spring 46 is provided between the pressure plate 45 of the dehumidification plate 4 and the bottom plate of the protective frame 2. The specific type, quantity and size of the return spring 46 are determined according to factors such as the size of the protective frame 2, the size of the dehumidification plate 4 and the quality of the dehumidification plate 4 in actual production.

[0055] After the dust removal filter plate 3 and the moisture removal plate 4 are installed in place, the return spring 46 is in a compressed state, which has a vertical upward force on the moisture removal plate 4. The connecting rod 5 decomposes the above force into an outward pressing force perpendicular to the surface of the dust removal filter plate 3. The above pressing force can press the dust removal filter plate 3 into the mounting hole of the protective frame 2.

[0056] When the dust filter plate 3 and the dehumidification plate 4 need to be maintained and replaced, the dust filter plate 3 is pressed toward the dehumidification plate 4. The pressure can be transmitted from the dust filter plate 3 to the connecting rod 5, thereby driving the connecting rod 5 to rotate in the direction relatively close to the dehumidification plate 4, so that the dust filter plate 3 moves toward the dehumidification plate 4 and then escapes from the mounting hole of the mounting plate.

[0057] At this time, the compressed return spring 46 is no longer restricted by the snap fit between the dust removal filter plate 3 and the mounting plate. The return spring 46 rebounds under the action of the elastic restoring force, and drives the dehumidification plate 4 and the dust removal filter plate 3 connected thereto to pop up.

[0058] Preferably, in order to make the force on the dehumidifying plate 4 relatively uniform, the return springs 46 can be arranged to be evenly distributed along the length direction of the pressing plate 45 .

[0059] The specific number of the return springs 46 and the distance between two adjacent return springs 46 are determined according to factors such as the elastic coefficient of the return spring 46 in actual production and the quality of the dehumidification plate 4, and are not described in detail here.

[0060] In this embodiment, by providing a connecting rod 5 and a return spring 46, the dust filter plate 4 can be pressed tightly into the protective frame 2 to ensure a stable connection between the two, and the dust filter plate 3 and the moisture removal plate 4 can be automatically loaded during disassembly. Compared with manual disassembly and lifting of the dust filter plate 3 and the moisture removal plate 4, the disassembly process is simple and the disassembly efficiency is high.

[0061] On the basis of the above embodiment, in order to facilitate limiting the movement of the connecting rod 5, a vertically arranged guide rod 6 is provided on the side of the dehumidification plate 4 relatively close to the dust removal filter plate 3, and support plates 61 are provided at both ends of the guide rod 6. The hinge block 51 at one end of the connecting rod 5 is sleeved on the outside of the guide rod 6, and a spring 62 is provided between the support plate 61 and the hinge block 51.

[0062] The outer sleeve of the guide rod 6 is provided with a moving block 52, and the moving block 52 is provided with a guide rod mounting hole for mounting the guide rod 6. The moving block 52 is connected to the hinge block at one end of the connection 5; the shape of the moving block 52 is not limited, and can be set to a rectangular, cylindrical, etc., such as Figure 6 shown.

[0063] Therefore, when the dust filter plate 3 is pressed, the connecting rod 5 rotates in a direction relatively close to the dehumidification plate 4, driving the hinge block 51 connecting the connecting rod 5 and the guide rod 6 to move downward along the guide rod 6, thereby compressing the return spring 46.

[0064] Preferably, a guide rod 6 can be provided on both sides of the dehumidification plate 4, two connecting rods 5 are provided on the outer sleeve of the guide rod 6, a spring 62 is provided between the hinge blocks 51 of the two connecting rods 5, and the two connecting rods 5 are symmetrically arranged about the midpoint of the guide rod 6, such as Figure 2 shown.

[0065] When the dust filter plate 3 and the dehumidification plate 4 need to be maintained or replaced, the dust filter plate 3 is pressed toward the dehumidification plate 4. The dust filter plate 3 squeezes the hinge block 51 connected to it. After being squeezed, the hinge block 51 moves toward the dehumidification plate 4. The hinge block 51 drives the connecting rod 5 to move toward the guide rod 6. Please refer to Figure 2 , that is, the connecting rod 5 sleeved on the upper part of the guide rod 6 rotates clockwise, and the connecting rod 5 sleeved on the lower part of the guide rod 6 rotates counterclockwise.

[0066] The rotation of the connecting rod 5 drives the moving block 52 to move along the guide rod 6 toward the direction of the support plates 61 at both ends. The moving block 52 squeezes the spring 62, causing the spring 62 to contract, thereby driving the dust filter plate 3 to move toward the direction of the moisture removal plate 4, and finally causing the dust filter plate 3 to fall out from the mounting plate of the protective frame 2.

[0067] At this time, the compressed return spring 46 is no longer restricted by the clamping fit between the dust removal filter plate 3 and the mounting plate. The return spring 46 rebounds under the action of the elastic restoring force, thereby driving the dehumidification plate 4 and the dust removal filter plate 3 connected thereto to pop up.

[0068] Based on the above embodiment, the structure of the dust filter plate 3 is defined, please refer to Figure 3 A pressing frame plate 31 is detachably provided in the mounting plate, the dust filter plate 3 is installed in the fixing frame 311 of the pressing frame plate 31, and the connecting rod 5 is hingedly connected to a side of the pressing frame plate 31 relatively close to the dehumidification plate 4.

[0069] Please refer to Figure 2-Figure 4 The fixed frame 311 of the pressing frame plate 31 is snapped into the mounting hole of the protective frame 2, and the dust filter plate 3 is snapped into the fixed frame 311, so the outer frame size of the fixed frame 311 is the same as the size of the mounting hole in the protective frame 2, and the inner frame size of the fixed frame 311 is the same as the size of the dust filter plate 3.

[0070] The fixing frame 311 is protruding from the end surface of the pressing frame plate 31 . Usually, the center of the fixing frame 311 is arranged to coincide with the center of the pressing frame plate 31 so that the center of gravity of the dust filter plate 3 is consistent with the center of gravity of the pressing frame plate 31 .

[0071] Based on the above embodiment, the structure of the dehumidification plate 4 is defined, please refer to Figure 5 The dehumidification plate 4 is clamped between the first positioning frame plate 41 and the second positioning frame plate 42 , and the first positioning frame plate 41 and the second positioning frame plate 42 are attracted by the magnet 43 .

[0072] When the dehumidification plate 4 needs to be replaced, the first positioning frame plate 41 and the second positioning frame plate 42 are pulled away from each other, and the pulling force is used to overcome the attraction force of the magnet 43 between the two positioning frame plates, so that the first positioning frame plate 41 and the second positioning frame plate 42 are separated from each other, thereby removing the dehumidification plate 4 clamped between the two.

[0073] After the dehumidification plate 4 is replaced, the dehumidification plate 4 is placed into the mounting hole of the first positioning frame plate 41, and then the second positioning frame plate 42 is moved in the direction close to the first positioning frame plate 41, and the magnet 43 is used to make the second positioning frame plate 42 and the first positioning frame plate 41 attracted to each other, thereby clamping the dehumidification plate 4.

[0074] The magnet 43 can be specifically configured as a bar magnet, a circular magnet, etc.; the magnet 43 can be only provided on the upper and lower edges of the first positioning frame plate 41 or the second positioning frame plate 42, such as Figure 5 As shown, magnets 43 may also be provided around the first positioning frame plate 41 or the second positioning frame plate 42 .

[0075] In order to facilitate the positioning and installation of the magnet 43, preferably, the upper and lower ends of the first positioning frame plate 41 and the second positioning frame plate 42 can be provided with bar magnets with regular shapes to facilitate the processing of the magnet installation grooves on the first and second positioning frame plates.

[0076] It should be noted that the first and second positioning frame plates 41 and 42 mentioned in this application document are only used to distinguish the difference in position and do not contain any limitation on the order.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] The electrical control device provided by the present invention has been introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that, for those skilled in the art, various improvements and modifications may be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An electrical control device, characterized in that: An electrical control box is provided with heat dissipation holes at both ends, and protective frames are provided at both ends of the electrical control box. A dust filter plate for filtering dust in the air and a dehumidification plate for absorbing moisture in the air are provided in the protective frames to prevent dust or moisture in the air from entering the heat dissipation holes; The protective frame includes a bottom plate, two side plates, and a mounting plate for mounting the dust removal filter plate, the mounting plate is parallel to the plane where the heat dissipation holes are located, and the bottom plate and the side plates are vertically connected to the outer edge of the mounting plate; The mounting plate and the side plates on both sides jointly form a placement hole for installing the dehumidification plate, the dehumidification plate is detachably mounted in the placement hole through the top plate, and the dust removal filter plate is detachably mounted in the mounting hole of the mounting plate; A connecting rod is provided between the dust removal filter plate and the dehumidification plate, and both ends of the connecting rod are hingedly connected to the dust removal filter plate and the dehumidification plate respectively, and the angle between the connecting rod and the mounting plate is an acute angle; A pressing plate is provided at the lower end of the dehumidification plate, and a return spring is provided between the pressing plate and the bottom plate. One end of the return spring is connected to the pressing plate or the bottom plate. When the dust removal filter plate and the dehumidification plate are installed in place, the return spring is compressed. When the dust filter plate is subjected to pressure directed toward the dehumidification plate, the dust filter plate is released from the mounting plate, and the dehumidification plate is rebounded under the action of the return spring; The return springs are evenly distributed along the length direction of the pressure plate; A pressing frame plate is detachably provided in the mounting plate, the dust removal filter plate is installed in the fixing frame of the pressing frame plate, and the connecting rod is hingedly connected to a side of the pressing frame plate relatively close to the dehumidification plate.

2. The electrical control device according to claim 1, characterized in that: A vertically arranged guide rod is provided on one side of the dehumidification plate relatively close to the dust removal filter plate, support plates are provided at both ends of the guide rod, a hinge block at one end of the connecting rod is sleeved outside the guide rod, and a spring is provided between the support plate and the hinge block.

3. The electrical control device according to claim 2, characterized in that: The guide rods are provided on both sides of the dehumidification plate. The outer sleeve of the guide rods is provided with two connecting rods. The spring is provided between the hinge blocks of the two connecting rods, and the two connecting rods are symmetrically arranged about the midpoint of the guide rods.

4. The electrical control device according to any one of claims 1 to 3, characterized in that: The dehumidification plate is clamped between the first positioning frame plate and the second positioning frame plate, and the first positioning frame plate and the second positioning frame plate are attracted by magnets.

5. The electrical control device according to claim 4, characterized in that: Bar magnets are provided at the upper and lower ends of the first positioning frame plate and the second positioning frame plate.

6. The electrical control device according to any one of claims 1 to 3, characterized in that: The shape and size of the mounting plate are the same as those of the end surface of the electrical control box.

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