CN115397158B - Electric control box - Google Patents

Abstract

The present invention discloses an electric control box, comprising a box body, which is divided into a first chamber and a second chamber arranged vertically up and down by a partition, an opening communicating with the second chamber is provided on a box side plate of the box body, a dehumidification device is provided in the second chamber, a handle is provided on a side adjacent to the opening, the dehumidification device comprises a first side plate and a second side plate spaced up and down, the first side plate has a first air outlet, a first air inlet communicating with the first air outlet is provided on the partition, a second air inlet is provided on the second side plate, a third air inlet communicating with the second air inlet is provided on the bottom plate, a dehumidification assembly is provided between the second air inlet and the first air outlet, a second air outlet is provided on the top plate of the box body, a water retaining frame is provided at a position corresponding to the second air outlet on the top of the box body, and four legs are provided below the bottom plate. The electric control box of the present invention can be powered on to maintain the dehumidification device, and the maintenance difficulty is low.

Description

Electric control box

Technical Field

The invention relates to the field of manufacturing of electrical equipment, in particular to an electric cabinet.

Background

The electric cabinet comprises one or more low-voltage switch devices and related control, measurement, signal, protection, regulation and other devices, and is used for power supply systems in the occasions of industrial equipment control, market office and the like. Outdoor electric cabinet is in the environment that humidity is higher often, and humid air enters into the inside of electric cabinet, can make the electrical components in the electric cabinet corrode the damage, perhaps electrically conductive short circuit damages. At present, an outdoor electric cabinet is generally provided with a dehumidifying device, the dehumidifying device is used for dehumidifying air entering the electric cabinet, and the dehumidifying device is generally fixed in the electric cabinet. The prior art has the defects that when the dehumidifying device fixed in the electric cabinet fails, the electric cabinet needs to be shut down and powered off and then opened for processing, the processing process is very troublesome, and the normal work of the electric cabinet is influenced.

Disclosure of Invention

The invention aims to provide an electric cabinet which can be used for maintaining a dehumidifying device in an electrified mode and has low maintenance difficulty.

In order to achieve the above purpose, the invention adopts the following technical scheme:

The utility model provides an electric cabinet, the power distribution box comprises a box body, separate for first cavity and the second cavity that set up along vertical direction through the baffle in the box, the second cavity is located the below of first cavity, first cavity is used for arranging the components and parts of electric cabinet, offer on the case curb plate of box with the opening of second cavity intercommunication, be provided with dehydrating unit in the second cavity, dehydrating unit can by the opening removes to the outside of box, dehydrating unit be adjacent to one side of opening is provided with the handle, dehydrating unit includes orientation first curb plate and orientation the second curb plate of the bottom plate of box, first curb plate has first air outlet, offer on the baffle with first air intake of first air outlet intercommunication, offer on the second curb plate the second air intake, offer on the bottom plate with the third air intake of second air intake intercommunication, dehydrating unit in and be located second air intake and second air outlet and the outside of box are provided with the second landing leg, the second air intake is provided with the second air intake to the second air intake, the second landing leg sets up to the second air intake, the second air intake is provided with the top plate and the top plate is provided with the top plate, the top plate is provided with the air intake and the top plate is connected to the top plate, the top plate is provided with the air supply room.

As a preferred scheme of electric cabinet, dehydrating unit's bottom is sunken to be provided with the locking groove, the bottom plate inboard is provided with the locking lever, the locking lever is connected with the driving piece, the driving piece drive the locking lever moves along vertical direction, in order to selectively insert to in the locking groove, the driving piece is connected with the controller, be provided with the unblock piece on the case curb plate of box, the unblock piece with the controller is connected, so that the locking lever with the separation of locking groove realizes the unblock.

As a preferable scheme of the electric cabinet, a sensor is arranged on the inner side wall of the bottom plate, a reflecting sheet is arranged on the baffle plate facing to one side surface of the bottom plate and opposite to the sensor, the sensor is connected with the controller, when the dehumidifying device is inserted into the second cavity, a light path between the sensor and the reflecting sheet is shielded, the controller controls the driving piece to start, and the driving piece controls the locking rod to extend out and be inserted into the locking groove.

As a preferable scheme of the electric cabinet, a pushing mechanism is arranged on the cavity wall, opposite to the opening, of the second cavity, and the pushing mechanism can push the dehumidifying device out towards the opening.

As a preferable scheme of the electric cabinet, the pushing mechanism is a pushing cylinder, the pushing cylinder is connected with the controller, a starting switch is arranged on one side surface of the partition board, which is close to the bottom plate, a pedal is arranged at one end of the dehumidifying device, which is provided with a handle, the pedal is stepped on, the top of the dehumidifying device collides with the starting switch, and the pushing cylinder extends out and pushes out the dehumidifying device.

As a preferred scheme of electric cabinet, the inside wall of bottom plate has the guide way, the length of guide way is followed dehydrating unit's direction of movement extends, the guide way has along the relative first cell wall and the second cell wall that sets up of self length direction, first cell wall is adjacent to the opening, first cell wall is followed dehydrating unit's direction of movement orientation the opening slope, the vertical setting of second cell wall corresponds dehydrating unit's bottom sets up the wheel, the wheel sets up in the guide way.

As a preferable scheme of the electric cabinet, a plug is arranged on the end face of one end, far away from the handle, of the dehumidifying device, a socket is arranged on the cavity wall, opposite to the opening, of the second cavity, the plug is connected with the socket in an inserting mode, and a power supply module of the cabinet supplies power for the dehumidifying device.

As a preferred scheme of electric cabinet, dehydrating unit includes the casing, dehumidification subassembly includes the semiconductor refrigeration piece, pass through in the casing the semiconductor refrigeration piece separates into along the third cavity and the fourth cavity that the horizontal direction was arranged, the heating surface of semiconductor refrigeration piece is towards the third cavity, the refrigeration surface of semiconductor refrigeration piece is towards the fourth cavity, the fourth cavity still sets up circulation heat exchange tube and circulating pump, the second air intake with first air outlet all with the fourth cavity intercommunication, circulation heat exchange tube part with the refrigeration surface hugs closely, and part sets up between the second air intake with first air outlet, the second cavity is just to the opening runs through on the chamber wall and sets up first louvre, the casing just to the second louvre has been seted up to the first louvre, the second louvre with the third cavity intercommunication.

As a preferable scheme of the electric cabinet, the circulating heat exchange pipe comprises a first part and a second part which are communicated, the circulating pump is arranged between the first part and the second part, the first part is attached to the refrigerating surface, a first fan is arranged between the second part and the first air outlet, the first fan is used for sending cold air which is dried after heat exchange into the first cavity, a second fan is arranged in the third cavity, the second fan is used for discharging hot air in the third cavity to the outside of the cabinet through a first heat dissipation hole and a second heat dissipation hole, and/or,

The second air outlet is provided with an exhaust fan, and the exhaust fan is used for exhausting the air in the first cavity towards the outside of the box body.

As a preferable scheme of the electric cabinet, the top of the fourth chamber is detachably provided with a ventilated dehumidification layer.

The dehumidifying device has the advantages that the dehumidifying device can be inserted into the second cavity from the opening or removed from the second cavity, the dehumidifying device is assembled with the box body of the electric cabinet like a drawer, when the dehumidifying device breaks down, the electric cabinet is not required to be powered off integrally, the dehumidifying device can be separated from the box body only by pulling the handle, maintenance operation is very simple, the dehumidifying device dehumidifies air outside the box body and then forcibly conveys the dehumidified air into the first cavity of the box body, so that components in the first cavity cannot be affected with moisture, the humid air in the first cavity is forced to be discharged from the second air outlet at the top of the box body, the influence of the humidity of the first cavity of the box body on the service life of the components is effectively avoided, and external rainwater is prevented from flowing backwards into the box body through the second air outlet at the top of the box body through the water retaining frame arranged at the top of the box body.

Drawings

The invention is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of an electric cabinet according to an embodiment of the present invention (not shown, a water blocking frame and an exhaust fan).

Fig. 2 is a schematic cross-sectional view of an electric cabinet according to an embodiment of the invention.

Fig. 3 is an enlarged schematic view at a of fig. 2.

Fig. 4 is a schematic cross-sectional view of an electric cabinet according to another embodiment of the present invention.

In the figure:

1. The box body, 11, a first chamber, 12, a second chamber, 13, a box side plate, 14, an opening, 15, a bottom plate, 151, a third air inlet, 152, a guide groove, 1521, a first groove wall, 1522, a second groove wall, 16, a top plate, 161, a second air outlet, 17, a supporting leg, 18, a locking rod, 19 and a first heat dissipation hole;

2. 21, a first air inlet;

3. the dehumidification device comprises a dehumidification device, a handle, a pedal, a 33, a shell, a 331, a first side plate, a 3311, a first air outlet, a 332, a second side plate, a 3321, a second air inlet, a 333, a third chamber, a 334, a fourth chamber, a 335, a second heat dissipation hole, a 34, a dehumidification component, a 341, a semiconductor refrigerating sheet, a 342, a circulating heat exchange tube, a 3421, a first part, a 3422, a second part, a 343, a circulating pump, a 344, a first fan, a 345, a second fan, a 346, a dehumidification layer, a 35, a locking groove, a 36 and a wheel;

4. A water blocking frame;

5. The device comprises a sensor, a reflector plate, a push-out cylinder, a start switch, an exhaust fan, a coded lock and a control unit.

Detailed Description

Advantages and features of the present invention and methods of accomplishing the same may become apparent with reference to the following detailed description of embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, which are provided only for the purpose of completing the disclosure of the present invention and fully understanding the scope of the present invention by those skilled in the art, and the present invention is limited only by the scope of the claims. Like reference numerals denote like constituent elements throughout the specification.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the electric cabinet provided by the invention comprises a cabinet 1, wherein the interior of the cabinet 1 is divided into a first chamber 11 and a second chamber 12 which are arranged along the vertical direction by a partition plate 2, the second chamber 12 is positioned below the first chamber 11, the first chamber 11 is used for arranging components (not shown in the figure) of the electric cabinet, an opening 14 which is communicated with the second chamber 12 is formed on a cabinet side plate 13 of the cabinet 1, a dehumidifying device 3 is arranged in the second chamber 12, the dehumidifying device 3 can move to the outside of the cabinet 1 from the opening 14, a handle 31 is arranged on one side surface of the dehumidifying device 3 adjacent to the opening 14, the dehumidifying device 3 comprises a first side plate 331 facing the partition plate 2 and a second side plate 332 facing a bottom plate 15 of the cabinet 1, the first side plate 331 is provided with a first air outlet 3311, the first air inlet 21 communicated with the first air outlet 3311 is formed in the partition plate 2, the second air inlet 3321 is formed in the second side plate 332, the third air inlet 151 communicated with the second air inlet 3321 is formed in the bottom plate 15, the dehumidifying component 34 is arranged in the dehumidifying device 3 and between the second air inlet 3321 and the first air outlet 3311, after the outside air is dehumidified by the dehumidifying component 34 through the third air inlet 151 and the second air inlet 3321, the dry air enters the first chamber 11 through the first air outlet 3311 and the first air inlet 21, the top plate 16 of the box body 1 is provided with the second air outlet 161, the water retaining frame 4 is arranged at the position of the top of the box body 1 corresponding to the second air outlet 161, and four supporting legs 17 are arranged below the bottom plate 15 so that an air supply channel is formed between the bottom plate 15 and the ground and is communicated with the third air inlet 151.

According to the electric cabinet, the first chamber 11 and the second chamber 12 are arranged independently, the first chamber 11 is used as a space for arranging components of the electric cabinet, the second chamber 12 is used as a dehumidifying space, so that external air can enter the first chamber 11 only after being dehumidified by the second chamber 12, the components in the first chamber 11 are completely eradicated from contacting humid air, the opening 14 is arranged, the dehumidifying device 3 can be inserted into the second chamber 12 from the opening 14 or removed from the second chamber 12, the dehumidifying device 3 is assembled with the cabinet body 1 of the electric cabinet like a drawer, when the dehumidifying device 3 breaks down, the whole electric cabinet is not required to be powered off, the dehumidifying device 3 can be separated from the cabinet body 1 only by pulling a handle 31, maintenance operation is very simple and convenient, the dehumidifying device 3 can forcedly convey the air outside the cabinet body 1 into the first chamber 11 of the cabinet body 1, the components in the first chamber 11 cannot be affected by humidity, the forcedly air in the first chamber 11 can be prevented from being influenced by the humidity, the forced air in the first chamber 11 can be prevented from being further arranged from being influenced by the humidity of the second chamber body 1 to the top body 1 through the air outlet 161, and the top of the cabinet body 161 can be prevented from being exhausted from being influenced by the top of the top body 1 through the air outlet body 161 and the top body 1 through the air outlet body 1, and the top body 161 can be prevented from being exhausted from the top body 1 to the top body 1 through the top body 1.

In one embodiment, in order to prevent the dehumidifying device 3 from being damaged or lost by being pulled out at will, the electric cabinet of the present invention is further provided with a locking structure, specifically, a locking groove 35 is concavely provided at the bottom of the dehumidifying device 3, a locking lever 18 is provided at the inner side of the bottom plate 15, the locking lever 18 is connected with a driving member (not shown in the figure), the driving member drives the locking lever 18 to move in the vertical direction so as to be selectively inserted into the locking groove 35, the driving member is connected with a controller (not shown in the figure), an unlocking member is provided on the side plate 13 of the cabinet 1, and the unlocking member is connected with the controller so as to separate the locking lever 18 from the locking groove 35 for unlocking.

Preferably, the unlocking member is a coded lock 10, the coded lock 10 is arranged on a box side plate 13 at the side edge of the box body 1, a unlocking signal can be given to the controller by inputting a correct code, and after the controller receives the unlocking signal, the controller controls the driving member to work, and the driving member drives the locking rod 18 to move downwards so as to separate the locking rod 18 from the locking groove 35. In addition to the combination lock 10, a fingerprint lock, face recognition, or the like may be provided.

In this embodiment, the sensor 5 is disposed on the inner side wall of the bottom plate 15, the baffle plate 2 is provided with the reflecting sheet 6 facing the sensor 5 toward one side surface of the bottom plate 15, the sensor 5 is connected with the controller, when the dehumidifying device 3 is inserted into the second chamber 12, the light path between the sensor 5 and the reflecting sheet 6 is blocked, the controller controls the driving member to start, and the driving member controls the locking lever 18 to extend and be inserted into the locking groove 35. By arranging the sensor 5 and the reflecting sheet 6, the locking can be realized by automatic control after the dehumidifying device 3 is inserted in place, and the locking is not required to be performed manually by an operator.

In this embodiment, the driving member may be a cylinder or an electric cylinder, as long as the locking lever 18 can be controlled to move vertically.

In an embodiment, the second chamber 12 is provided with an ejector mechanism facing the chamber wall of the opening 14, which ejector mechanism is capable of ejecting the dehumidifying device 3 towards the opening 14. Because the second chamber 12 is disposed at the bottom of the case 1, it is relatively laborious for an operator to pull out the dehumidifier 3 completely inserted into the second chamber 12 during maintenance, and therefore, the ejector mechanism is provided, after the dehumidifier 3 is unlocked, the ejector mechanism can push out the dehumidifier 3 toward the opening 14, so that the portion of the dehumidifier 3 exposed outside the case 1 is more, and the operator can conveniently take out the dehumidifier 3.

Preferentially, the pushing mechanism is a pushing cylinder 7, the pushing cylinder 7 is connected with the controller, a starting switch 8 is arranged on one side surface of the partition board 2, which is close to the bottom plate 15, a pedal 32 is arranged at one end of the dehumidifier 3, which is provided with a handle 31, the pedal 32 is stepped on, the top of the dehumidifier 3 is tilted up, then the pushing cylinder collides with the starting switch 8, and after the starting switch 8 is started, the pushing cylinder 7 stretches out and pushes out the dehumidifier 3. By providing a structure in which the pedal 32 and the start switch 8 are engaged, the operator can start the push-out cylinder 7 behind the dehumidifier 3 without bending down, and then move the dehumidifier 3 toward the outside of the cabinet 1.

Further, the inner side wall of the bottom plate 15 has a guiding groove 152, the length of the guiding groove 152 extends along the moving direction of the dehumidifying device 3, the guiding groove 152 has a first groove wall 1521 and a second groove wall 1522 which are oppositely arranged along the length direction, the first groove wall 1521 is adjacent to the opening 14, the first groove wall 1521 is inclined towards the opening 14 along the moving direction of the dehumidifying device 3, the second groove wall 1522 is vertically arranged, a wheel 36 is correspondingly arranged at the bottom of the dehumidifying device 3, and the wheel 36 is arranged in the guiding groove 152. Through setting up wheel 36, can reduce the removal degree of difficulty of dehydrating unit 3, and set up guide way 152, and the first cell wall 1521 slope setting of guide way 152 can be after ejecting cylinder 7 releases dehydrating unit 3, and the removal to dehydrating unit 3 is buffered, prevents that dehydrating unit 3 from all popping out to box 1 outside and falling the damage, and the second cell wall 1522 of perpendicular setting can inject dehydrating unit 3 the removal position in second cavity 12, avoids dehydrating unit 3 directly to bump with the cavity wall of second cavity 12 and damage.

In an embodiment, the dehumidifying device 3 may supply power from a power supply or a power supply module using an electric cabinet, and the dehumidifying device 3 is described below as an example of supplying power using the power supply module of the electric cabinet.

The end surface of the dehumidifying device 3, which is far away from the handle 31, is provided with a plug (not shown in the figure), the cavity wall of the second cavity 12, which is opposite to the opening 14, is provided with a socket (not shown in the figure), the plug is connected with the socket in an inserting way, and the power supply module of the box body 1 supplies power for the dehumidifying device 3. The design can reduce the overall weight of the dehumidifying device 3 without setting a separate power supply module, and the power supply module (direct mains supply or preset battery) of the box body 1 is used for power supply.

Specifically, the dehumidifying device 3 includes a housing 33, the dehumidifying assembly 34 includes a semiconductor refrigeration sheet 341, the housing 33 is divided into a third chamber 333 and a fourth chamber 334 which are arranged along a horizontal direction by the semiconductor refrigeration sheet 341, a heating surface of the semiconductor refrigeration sheet 341 faces the third chamber 333, a cooling surface of the semiconductor refrigeration sheet 341 faces the fourth chamber 334, the fourth chamber 334 is further provided with a circulating heat exchange tube 342 and a circulating pump 343, both the second air inlet 3321 and the first air outlet 3311 are communicated with the fourth chamber 334, the circulating heat exchange tube 342 is partially clung to the cooling surface, and is partially arranged between the second air inlet 3321 and the first air outlet 3311, the second chamber 12 is provided with a first heat dissipation hole 19 in a penetrating manner on a cavity wall opposite to the opening 14, the housing 33 is provided with a second heat dissipation hole 335 opposite to the first heat dissipation hole 19, and the second heat dissipation hole 335 is communicated with the third chamber 333. The semiconductor refrigeration sheet 341, also called a thermoelectric refrigeration sheet, is a heat pump. Its advantages are no slide parts, limited space, high reliability and no pollution to refrigerant. By utilizing the Peltier effect of the semiconductor materials, when direct current passes through a couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the couple respectively, and the purpose of refrigeration can be realized. The refrigerating technology for producing negative thermal resistance features no moving parts and high reliability.

Through setting up semiconductor refrigeration piece 341, can cool down the dry gas that gets into first cavity 11 for the components and parts in the first cavity 11 can dispel the heat fast, guarantee the long service life of components and parts in the electric cabinet, semiconductor refrigeration piece 341 can also regard as the structure of isolation casing 33 moreover, reduced the use of panel, the cost is reduced, through setting up the louvre, can dispel the heat to the face that generates heat of semiconductor refrigeration piece 341, avoid the interior local high temperature of dehydrating unit 3, the heat directly gives off the outside of box 1 through the louvre, can not transmit to the first cavity 11 or in the fourth cavity 334 influence the normal work of components and parts or dehumidification subassembly 34.

The circulating heat exchange tube 342 includes a first portion 3421 and a second portion 3422 which are communicated, a circulating pump 343 is arranged between the first portion 3421 and the second portion 3422, the first portion 3421 is attached to the refrigerating surface, a first fan 344 is arranged between the second portion 3422 and the first air outlet 3311, the first fan 344 is used for sending cold air dried after heat exchange into the first chamber 11, a second fan 345 is arranged in the third chamber 333, and the second fan 345 is used for discharging hot air in the third chamber 333 to the outside of the box 1 through the first heat dissipation holes 19 and the second heat dissipation holes 335. The first fan 344 can forcibly discharge the hot air generated in the third chamber 333 to the outside of the case 1, thereby reducing the time for the hot air to stay in the third chamber 333 and further reducing heat transfer, and the second fan 345 can forcibly input the heat exchanged and condensed dry and cool air into the first chamber 11, and the second fan 345 is arranged between the second portion 3422 and the first air outlet 3311, so that condensed water generated after the heat exchange between the second portion 3422 and the hot and humid air does not fall on the second fan 345, thereby prolonging the service life.

The second air outlet 161 is provided with an exhaust fan 9, and the exhaust fan 9 is used for exhausting the air in the first chamber 11 toward the outside of the case 1. The exhaust fan 9 can improve the air circulation speed in the first chamber 11, and after the air cools the components, the hot air can be rapidly exhausted, so that the cooling effect of the components can be improved to a certain extent.

Preferably, as shown in fig. 4, the top of the fourth chamber 334 is detachably provided with a ventilated dehumidifying layer 346. Through setting up dehumidification layer 346, can further carry out the secondary dehumidification to the air after the cooling, further guarantee the dryness of getting into the air in the first cavity 11, and can dismantle and set up dehumidification layer 346, can change dehumidification layer 346 as required, reduce the change degree of difficulty.

The dehumidifying layer 346 may be connected to the inner sidewall of the case 33 (i.e., the inner sidewall of the first side plate 331) by screw fastening, or may be fastened to the inner sidewall of the first side plate 331 by providing a fastening groove in the inner sidewall of the first side plate 331.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but may be manufactured in various forms, and it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Accordingly, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive.

Claims (7)

1. The utility model provides an electric cabinet, includes the box, its characterized in that, separate into first cavity and the second cavity that set up along vertical direction through the baffle in the box, the second cavity is located the below of first cavity, first cavity is used for arranging the components and parts of electric cabinet, set up on the case curb plate of box with the opening of second cavity intercommunication, be provided with dehumidification device in the second cavity, dehumidification device can by the opening remove to the outside of box, dehumidification device is adjacent to one side of opening is provided with the handle, dehumidification device includes towards the first curb plate of baffle and towards the second curb plate of the bottom plate of box, first air intake of first air outlet intercommunication has been seted up on the baffle, set up on the second curb plate with the second air intake of second air intake intercommunication, and be located in the dehumidification device second air intake and the second landing leg are provided with the second air intake to the outside of box is provided with the second air intake, and the second air intake is provided with the second air intake of second landing leg to the top plate is provided with the air intake to the second air intake channel is passed through to the top of the box, the dehumidification device is provided with the top plate air intake to the top plate is connected to the top of the top plate;

the bottom of the dehumidifying device is concavely provided with a locking groove, the inner side of the bottom plate is provided with a locking rod, the locking rod is connected with a driving piece, the driving piece drives the locking rod to move along the vertical direction so as to be selectively inserted into the locking groove, the driving piece is connected with a controller, the side plate of the box body is provided with an unlocking piece, and the unlocking piece is connected with the controller so as to separate the locking rod from the locking groove to unlock;

The second chamber is provided with a pushing mechanism opposite to the chamber wall of the opening, and the pushing mechanism can push the dehumidifying device out towards the opening;

the pushing mechanism is a pushing cylinder, the pushing cylinder is connected with the controller, a starting switch is arranged on one side surface of the partition board, which is close to the bottom plate, a pedal is arranged at one end of the dehumidifier, which is provided with a handle, the pedal is stepped on, the top of the dehumidifier collides with the starting switch, and the pushing cylinder extends out and pushes out the dehumidifier.

2. The electric cabinet according to claim 1, wherein a sensor is disposed on an inner side wall of the bottom plate, a reflecting plate is disposed opposite to the sensor toward a side surface of the bottom plate, the sensor is connected with the controller, when the dehumidifying device is inserted into the second chamber, an optical path between the sensor and the reflecting plate is blocked, the controller controls the driving member to start, and the driving member controls the locking rod to extend out and be inserted into the locking groove.

3. The electric cabinet according to claim 1, wherein the inner side wall of the bottom plate has a guide groove, the length of the guide groove extends along the moving direction of the dehumidifying device, the guide groove has a first groove wall and a second groove wall which are oppositely arranged along the length direction of the guide groove, the first groove wall is adjacent to the opening, the first groove wall is inclined toward the opening along the moving direction of the dehumidifying device, the second groove wall is vertically arranged, wheels are correspondingly arranged at the bottom of the dehumidifying device, and the wheels are arranged in the guide groove.

4. An electric cabinet according to any one of claims 1 to 3, wherein a plug is arranged on the end face of the dehumidifying device, which is far away from the handle, and a socket is arranged on the cavity wall of the second cavity, which is opposite to the opening, and the plug is connected with the socket in an inserting way, and a power supply module of the cabinet supplies power for the dehumidifying device.

5. The electric cabinet according to claim 4, wherein the dehumidifying device comprises a housing, the dehumidifying component comprises a semiconductor refrigerating plate, the housing is divided into a third chamber and a fourth chamber which are arranged along a horizontal direction by the semiconductor refrigerating plate, a heating surface of the semiconductor refrigerating plate faces the third chamber, a refrigerating surface of the semiconductor refrigerating plate faces the fourth chamber, a circulating heat exchange tube and a circulating pump are further arranged in the fourth chamber, the second air inlet and the first air outlet are communicated with the fourth chamber, the circulating heat exchange tube is partially clung to the refrigerating surface, the second air inlet and the first air outlet are partially arranged between the second air inlet and the first air outlet, a first radiating hole is formed in the cavity wall of the second chamber, which is opposite to the opening, the housing is opposite to the first radiating hole, and the second radiating hole is communicated with the third chamber.

6. The electric cabinet of claim 5, wherein the circulating heat exchange tube comprises a first part and a second part which are communicated, the circulating pump is arranged between the first part and the second part, the first part is attached to the refrigerating surface, a first fan is arranged between the second part and the first air outlet, the first fan is used for sending cold air dried after heat exchange into the first chamber, a second fan is arranged in the third chamber, the second fan is used for discharging hot air in the third chamber to the outside of the cabinet through a first heat dissipation hole and a second heat dissipation hole, and/or,

The second air outlet is provided with an exhaust fan, and the exhaust fan is used for exhausting the air in the first cavity towards the outside of the box body.

7. The electric cabinet of claim 5, wherein a top of the fourth chamber is detachably provided with a ventilation dehumidifying layer.