Electric control box

Abstract

The present invention discloses an electric control box, which includes a box body. The box body is divided into a first chamber and a second chamber arranged vertically up and down by a partition board. An opening communicating with the second chamber is provided on the box side plate of the box body. A dehumidification device is arranged in the second chamber, and a handle is arranged on one side surface adjacent to the opening. The dehumidification device includes a first side plate and a second side plate spaced up and down. The first side plate has a first air outlet, and a first air inlet communicating with the first air outlet is provided on the partition board. A second air inlet is provided on the second side plate, and a third air inlet communicating with the second air inlet is provided on the bottom plate. A dehumidification component is arranged 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 rack is arranged at the position corresponding to the second air outlet on the top of the box body, and four legs are arranged below the bottom plate. The electric control box of the present invention can perform maintenance on the dehumidification device while being powered on, and the maintenance difficulty is low.

Description

Technical Field

[0001] The present invention relates to the field of electrical equipment manufacturing, and particularly to an electric control box. Background Art

[0002] An electric control box includes one or more low-voltage switchgears and related control, measurement, signal, protection, regulation and other devices, and is used for the power supply system in industrial equipment control, shopping malls, offices and other occasions. The outdoor electric control box is often in an environment with relatively high humidity. After the humid air enters the interior of the electric control box, it will cause corrosion and damage to the electrical components in the electric control box, or conductive short-circuit damage. At present, the outdoor electric control box is generally provided with a dehumidification device to dehumidify the air entering the electric control box, and the dehumidification device is generally fixed inside the electric control box. The prior art has the following defects: when the dehumidification device fixed inside the electric control box fails, it is necessary to stop the machine and cut off the power of the electric control box and then open the box for treatment. The treatment process is very troublesome and also affects the normal operation of the electric control box. Summary of the Invention

[0003] The purpose of the present invention is to provide an electric control box that can be repaired while being energized, and the repair difficulty is low.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Provide an electric control box, including a box body. The interior of the box body is divided into a first chamber and a second chamber arranged vertically by a partition. The second chamber is located below the first chamber. The first chamber is used to arrange the components of the electric control box. An opening communicating with the second chamber is provided on the box side plate of the box body. A dehumidification device is arranged in the second chamber. The dehumidification device can move from the opening to the outside of the box body. A handle is provided on one side surface of the dehumidification device adjacent to the opening. The dehumidification device includes a first side plate facing the partition and a second side plate facing the bottom plate of the box body. 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 component is arranged in the dehumidification device between the second air inlet and the first air outlet. The external air enters the first chamber after being dehumidified by the dehumidification component through the third air inlet and the second air inlet. A second air outlet is provided on the top plate of the box body. A water blocking frame is provided at the position corresponding to the second air outlet on the top of the box body. Four legs are provided below the bottom plate so that a ventilation channel is formed at an interval between the bottom plate and the ground. The ventilation channel is communicated with the third air inlet.

[0006] As a preferred solution of the electric control box, a locking groove is recessed at the bottom of the dehumidifying device, a locking rod is arranged inside the bottom plate, the locking rod is connected to a driving member, the driving member drives the locking rod to move in the vertical direction so as to selectively insert into the locking groove, the driving member is connected to a controller, and an unlocking member is arranged on the box side plate of the box body, and the unlocking member is connected to the controller so as to separate the locking rod from the locking groove to realize unlocking.

[0007] As a preferred solution of the electric control box, a sensor is arranged on the inner side wall of the bottom plate, a reflecting sheet is arranged on the side surface of the partition plate facing the bottom plate opposite to the sensor, the sensor is connected to the controller, and after the dehumidifying device is inserted into the second chamber, the optical path between the sensor and the reflecting sheet is blocked, and the controller controls the driving member to start, and the driving member controls the locking rod to extend and insert into the locking groove.

[0008] As a preferred solution of the electric control box, a pushing mechanism is arranged on the chamber wall of the second chamber facing the opening, and the pushing mechanism can push the dehumidifying device towards the opening.

[0009] As a preferred solution of the electric control box, the pushing mechanism is a pushing cylinder, the pushing cylinder is connected to the controller, a starting switch is arranged on the side surface of the partition plate close to the bottom plate, a pedal is arranged at one end of the dehumidifying device provided with a handle, and when the pedal is stepped on, the top of the dehumidifying device collides with the starting switch, and the pushing cylinder extends and pushes the dehumidifying device out.

[0010] As a preferred solution of the electric control box, a guiding groove is arranged on the inner side wall of the bottom plate, the length of the guiding groove extends along the moving direction of the dehumidifying device, the guiding groove has a first groove wall and a second groove wall oppositely arranged along its own length direction, the first groove wall is adjacent to the opening, the first groove wall is inclined towards the opening along the moving direction of the dehumidifying device, the second groove wall is vertically arranged, and correspondingly, wheels are arranged at the bottom of the dehumidifying device, and the wheels are arranged in the guiding groove.

[0011] As a preferred solution of the electric control box, a plug is arranged on the end face of the dehumidifying device away from the handle, a socket is arranged on the chamber wall of the second chamber facing the opening, the plug is inserted into the socket, and the power supply module of the box body supplies power to the dehumidifying device.

[0012] As a preferred embodiment of the electric control box, the dehumidifying device includes a housing. The dehumidifying component includes a semiconductor refrigeration sheet. The housing is divided into a third chamber and a fourth chamber arranged horizontally by the semiconductor refrigeration sheet. The heating surface of the semiconductor refrigeration sheet faces the third chamber, and the cooling surface of the semiconductor refrigeration sheet faces the fourth chamber. The fourth chamber is also provided with a circulating heat exchange tube and a circulating pump. The second air inlet and the first air outlet are both communicated with the fourth chamber. Part of the circulating heat exchange tube is closely attached to the cooling surface, and part is arranged between the second air inlet and the first air outlet. A first heat dissipation hole is penetrated through the chamber wall of the second chamber facing the opening, and a second heat dissipation hole is opened on the housing facing the first heat dissipation hole. The second heat dissipation hole is communicated with the third chamber.

[0013] As a preferred embodiment of the electric control box, the circulating heat exchange tube includes a first part and a second part that are communicated. A circulating pump is arranged between the first part and the second part. The first part is attached to the cooling surface, and a first fan is arranged between the second part and the first air outlet. The first fan is used to send the dried cold air after heat exchange into the first chamber. A second fan is arranged in the third chamber. The second fan is used to discharge the hot air in the third chamber to the outside of the box body through the first heat dissipation hole and the second heat dissipation hole; and / or,

[0014] An exhaust fan is arranged at the second air outlet. The exhaust fan is used to discharge the air in the first chamber towards the outside of the box body.

[0015] As a preferred embodiment of the electric control box, a ventilated dehumidifying layer is detachably arranged at the top of the fourth chamber.

[0016] The beneficial effects of the present invention are as follows: By providing the second chamber and the opening, the dehumidifying device can be inserted into the second chamber from the opening or removed from the second chamber. The dehumidifying device is assembled with the box body of the electric control box like a drawer. When the dehumidifying device fails, there is no need to cut off the power supply of the entire electric control box. Just pull the handle, and the dehumidifying device can be separated from the box body, and the maintenance operation is very simple; the dehumidifying device dehumidifies the air outside the box body and forcibly conveys it into the first chamber of the box body, so that the components in the first chamber will not get damp, and the original damp air in the first chamber will also be forcibly discharged from the second air outlet at the top of the box body, effectively avoiding the dampness of the first chamber of the box body from affecting the service life of the components; by arranging a water blocking rack at the top of the box body, it is possible to prevent the rainwater outside from flowing back into the box body through the second air outlet at the top of the box body. Description of the Drawings

[0017] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0018] Figure 1 A perspective view of the electric control box according to an embodiment of the present invention (the water baffle and the exhaust fan are not shown).

[0019] Figure 2 A cross-sectional view of the electric control box according to an embodiment of the present invention.

[0020] Figure 3 Is Figure 2 An enlarged view of part A of

[0021] Figure 4 A cross-sectional view of the electric control box according to another embodiment of the present invention.

[0022] In the figure:

[0023] 1. Cabinet; 11. First chamber; 12. Second chamber; 13. Cabinet side plate; 14. Opening; 15. Bottom plate; 151. Third air inlet; 152. Guide groove; 1521. First groove wall; 1522. Second groove wall; 16. Top plate; 161. Second air outlet; 17. Leg; 18. Locking rod; 19. First heat dissipation hole;

[0024] 2. Partition; 21. First air inlet;

[0025] 3. Dehumidification device; 31. Handle; 32. Pedal; 33. Housing; 331. First side plate; 3311. First air outlet; 332. Second side plate; 3321. Second air inlet; 333. Third chamber; 334. Fourth chamber; 335. Second heat dissipation hole; 34. Dehumidification component; 341. Semiconductor refrigeration sheet; 342. Circulating heat exchange pipe; 3421. First part; 3422. Second part; 343. Circulation pump; 344. First fan; 345. Second fan; 346. Dehumidification layer; 35. Locking groove; 36. Wheel;

[0026] 4. Water baffle;

[0027] 5. Sensor; 6. Reflective sheet; 7. Pushing cylinder; 8. Start switch; 9. Exhaust fan; 10. Password lock. Detailed implementation manners

[0028] Referring to the embodiments described in detail below in conjunction with the drawings, the advantages and features of the present invention and the methods for realizing them will become obvious. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. The provision of this embodiment is only to complete the disclosure of the present invention and enable those skilled in the art to fully understand the scope of the present invention, and the present invention is only defined by the scope of the claims. The same reference numerals represent the same components throughout the specification.

[0029] Hereinafter, the present invention will be described in detail with reference to the drawings.

[0030] As Figures 1 to 3 shown, an electric control box provided by the present invention includes a box body 1. The box body 1 is divided into a first chamber 11 and a second chamber 12 arranged vertically by a partition 2. The second chamber 12 is located below the first chamber 11. The first chamber 11 is used to arrange the components of the electric control box (not shown in the figure). An opening 14 communicating with the second chamber 12 is formed on the box side plate 13 of the box body 1. A dehumidifying device 3 is arranged in the second chamber 12. The dehumidifying device 3 can move from the opening 14 to the outside of the box body 1. A handle 31 is arranged on a side surface of the dehumidifying device 3 adjacent to the opening 14. The dehumidifying device 3 includes a first side plate 331 facing the partition 2 and a second side plate 332 facing the bottom plate 15 of the box body 1. The first side plate 331 has a first air outlet 3311. A first air inlet 21 communicating with the first air outlet 3311 is formed on the partition 2. A second air inlet 3321 is formed on the second side plate 332. A third air inlet 151 communicating with the second air inlet 3321 is formed on the bottom plate 15. A dehumidifying component 34 is arranged in the dehumidifying device 3 between the second air inlet 3321 and the first air outlet 3311. After the external air passes through the third air inlet 151 and the second air inlet 3321 and is dehumidified by the dehumidifying component 34, the dry air enters the first chamber 11 through the first air outlet 3311 and the first air inlet 21. A second air outlet 161 is formed on the top plate 16 of the box body 1. A water blocking frame 4 is arranged at the position of the box body 1 corresponding to the second air outlet 161. Four legs 17 are arranged below the bottom plate 15 so that an air supply channel is formed at an interval between the bottom plate 15 and the ground, and the air supply channel is communicated with the third air inlet 151.

[0031] The electric control box of the present invention is provided with an independent first chamber 11 and a second chamber 12. The first chamber 11 serves as the space for arranging components in the electric control box, and the second chamber 12 serves as a dehumidification space. They are separated, so that external air can only enter the first chamber 11 after being dehumidified through the second chamber 12, completely preventing the components in the first chamber 11 from coming into contact with humid air. The setting of the opening 14 enables the dehumidification device 3 to be inserted into the second chamber 12 through the opening 14 or removed from the second chamber 12. The dehumidification device 3 is assembled with the box body 1 of the electric control box like a drawer. When the dehumidification device 3 fails, it is not necessary to cut off the power supply of the entire electric control box. Only by pulling the exposed handle 31 of the dehumidification device 3, the dehumidification device 3 can be separated from the box body 1, and the maintenance operation is very simple. The dehumidification device 3 dehumidifies the air outside the box body 1 and forcibly conveys it into the first chamber 11 of the box body 1, so that the components in the first chamber 11 will not be affected by moisture. Moreover, the originally humid air in the first chamber 11 will also be forcibly discharged from the second air outlet 161 at the top of the box body 1, effectively preventing the humidity in the first chamber 11 of the box body 1 from affecting the service life of the components. By providing a water blocking rack 4 at the top of the box body 1, it is possible to prevent external rainwater from flowing back into the box body 1 through the second air outlet 161 at the top of the box body 1.

[0032] In one embodiment, in order to prevent the dehumidification device 3 from being randomly pulled out and damaged or lost, the electric control box of the present invention is further provided with a locking structure. Specifically, a locking groove 35 is recessed at the bottom of the dehumidification device 3, and a locking rod 18 is arranged inside the bottom plate 15. The locking rod 18 is connected to a driving member (not shown in the figure). The driving member drives the locking rod 18 to move in the vertical direction to selectively insert into the locking groove 35. The driving member is connected to a controller (not shown in the figure). An unlocking member is arranged on the box side plate 13 of the box body 1, and the unlocking member is connected to the controller to separate the locking rod 18 from the locking groove 35 to achieve unlocking.

[0033] Preferably, the unlocking member is a password lock 10. The password lock 10 is arranged on the box side plate 13 on the side of the box body 1. By inputting the correct password, a unlocking signal can be given to the controller. After receiving the unlocking signal, the controller controls the driving member to work, and the driving member drives the locking rod 18 to move downward so that the locking rod 18 is separated from the locking groove 35. In addition to the password lock 10, it can also be set as a fingerprint lock or face recognition, etc.

[0034] In this embodiment, a sensor 5 is provided on the inner side wall of the bottom plate 15. A reflecting sheet 6 is provided on the side of the partition plate 2 facing the bottom plate 15 opposite to the sensor 5. The sensor 5 is connected to the controller. After the dehumidification device 3 is inserted into the second chamber 12, the optical path between the sensor 5 and the reflecting sheet 6 is blocked, and the controller controls the driving member to start. The driving member controls the locking rod 18 to extend and insert into the locking groove 35. By providing the sensor 5 and the reflecting sheet 6, automatic control for locking can be achieved after the dehumidification device 3 is inserted in place, without the need for the operator to manually lock it.

[0035] In this embodiment, the driving member can be a cylinder or an electric cylinder or other driving members, as long as it can control the vertical movement of the locking rod 18.

[0036] In one embodiment, a pushing mechanism is provided on the chamber wall of the second chamber 12 facing the opening 14. The pushing mechanism can push the dehumidification device 3 towards the opening 14. Since the second chamber 12 is provided at the bottom of the box body 1, it will be relatively laborious for the operator to drag out the dehumidification device 3 that is fully inserted into the second chamber 12 during maintenance. Therefore, by providing the pushing mechanism, after the dehumidification device 3 is unlocked, the pushing mechanism will push the dehumidification device 3 towards the opening 14, making a larger part of the dehumidification device 3 exposed outside the box body 1, which is convenient for the operator to take out the dehumidification device 3.

[0037] Preferably, the pushing mechanism is a pushing cylinder 7. The pushing cylinder 7 is connected to the controller. A start switch 8 is provided on the side of the partition plate 2 close to the bottom plate 15. One end of the dehumidification device 3 provided with a handle 31 is provided with a pedal 32. When the pedal 32 is stepped on, the top of the dehumidification device 3 tilts up and then collides with the start switch 8. After the start switch 8 is turned on, the pushing cylinder 7 extends and pushes out the dehumidification device 3. By providing the structure of the pedal 32 and the start switch 8 in cooperation, the operator can start the pushing cylinder 7 behind the dehumidification device 3 without bending down, and then make the dehumidification device 3 move towards the outside of the box body 1.

[0038] Further, the inner sidewall of the bottom plate 15 has a guide groove 152. The length of the guide groove 152 extends along the moving direction of the dehumidifying device 3. The guide groove 152 has a first groove wall 1521 and a second groove wall 1522 that are oppositely arranged along its own length direction. The first groove wall 1521 is adjacent to the opening 14, and the first groove wall 1521 is inclined toward the opening 14 along the moving direction of the dehumidifying device 3. The second groove wall 1522 is vertically arranged. Correspondingly, wheels 36 are arranged at the bottom of the dehumidifying device 3, and the wheels 36 are arranged in the guide groove 152. By arranging the wheels 36, the moving difficulty of the dehumidifying device 3 can be reduced. By arranging the guide groove 152 and inclining the first groove wall 1521 of the guide groove 152, after the pushing cylinder 7 pushes out the dehumidifying device 3, the movement of the dehumidifying device 3 can be buffered to prevent the dehumidifying device 3 from being completely ejected outside the box body 1 and falling and being damaged. The vertically arranged second groove wall 1522 can limit the moving position of the dehumidifying device 3 in the second chamber 12 to avoid the dehumidifying device 3 directly colliding with the chamber wall of the second chamber 12 and being damaged.

[0039] In one embodiment, the dehumidifying device 3 can be self-powered or powered by the power supply module of the electric control box. Hereinafter, an example will be given in which the dehumidifying device 3 is powered by the power supply module of the electric control box.

[0040] A plug (not shown in the figure) is arranged on the end face of the dehumidifying device 3 away from the handle 31, and a socket (not shown in the figure) is arranged on the chamber wall of the second chamber 12 facing the opening 14. The plug is inserted into the socket, and the power supply module of the box body 1 powers the dehumidifying device 3. This design can reduce the overall weight of the dehumidifying device 3 without the need to set up a separate power supply module, and the power supply module of the box body 1 (direct mains power or a preset battery) is used for power supply.

[0041] Specifically, the dehumidifying device 3 includes a housing 33. The dehumidifying component 34 includes a thermoelectric cooler 341. The housing 33 is divided into a third chamber 333 and a fourth chamber 334 arranged horizontally by the thermoelectric cooler 341. The heating surface of the thermoelectric cooler 341 faces the third chamber 333, and the cooling surface of the thermoelectric cooler 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. The second air inlet 3321 and the first air outlet 3311 are both communicated with the fourth chamber 334. Part of the circulating heat exchange tube 342 is in close contact with the cooling surface, and part is arranged between the second air inlet 3321 and the first air outlet 3311. A first heat dissipation hole 19 is penetrated through the chamber wall of the second chamber 12 facing the opening 14. The housing 33 is provided with a second heat dissipation hole 335 facing the first heat dissipation hole 19. The second heat dissipation hole 335 is communicated with the third chamber 333. The thermoelectric cooler 341, also called a thermoelectric refrigeration sheet, is a kind of heat pump. Its advantage is that there are no moving parts, and it is applied to some occasions where space is limited, reliability requirements are high, and there is no refrigerant pollution. Utilizing the Peltier effect of semiconductor materials, when direct current passes through an electric couple formed by two different semiconductor materials connected in series, heat can be absorbed and released at both ends of the electric couple respectively, and the purpose of refrigeration can be achieved. It is a refrigeration technology that generates negative thermal resistance, characterized by no moving parts and relatively high reliability.

[0042] By setting the thermoelectric cooler 341, the dry gas entering the first chamber 11 can be cooled, enabling the components in the first chamber 11 to dissipate heat quickly, ensuring a long service life of the components in the electric control box. Moreover, the thermoelectric cooler 341 can also serve as a structure for isolating the housing 33, reducing the use of plates and lowering the cost. By setting the heat dissipation holes, the heating surface of the thermoelectric cooler 341 can be dissipated, avoiding local high temperature inside the dehumidifying device 3. The heat is directly dissipated to the outside of the box body 1 through the heat dissipation holes and will not be transferred to the first chamber 11 or the fourth chamber 334 to affect the normal operation of the components or the dehumidifying component 34.

[0043] The circulating heat exchange tube 342 includes a first part 3421 and a second part 3422 that are connected and communicate with each other. A circulating pump 343 is provided between the first part 3421 and the second part 3422. The first part 3421 is attached to the refrigerating surface. A first fan 344 is provided between the second part 3422 and the first air outlet 3311. The first fan 344 is used to send the dried cold air after heat exchange into the first chamber 11. A second fan 345 is provided in the third chamber 333. The second fan 345 is used to discharge the hot air in the third chamber 333 to the outside of the box body 1 through the first heat dissipation hole 19 and the second heat dissipation hole 335. By providing the first fan 344, the hot air generated in the third chamber 333 can be forcibly discharged to the outside of the box body 1, reducing the time for the hot air to stay in the third chamber 333, and thus reducing heat transfer. By providing the second fan 345, the dried cold air after heat exchange and condensation can be forcibly input into the first chamber 11. Moreover, since the second fan 345 is provided between the second part 3422 and the first air outlet 3311, the condensed water generated after the second part 3422 exchanges heat with the humid hot air will not drop on the second fan 345, extending the service life.

[0044] A exhaust fan 9 is provided at the second air outlet 161. The exhaust fan 9 is used to discharge the air in the first chamber 11 towards the outside of the box body 1. The provision of the exhaust fan 9 can increase the speed of air circulation in the first chamber 11. After the air cools the components, the hot air can be quickly discharged, which can also improve the cooling effect of the components to a certain extent.

[0045] Preferably, as Figure 4 shown, a ventilated dehumidification layer 346 is detachably provided at the top of the fourth chamber 334. By providing the dehumidification layer 346, the cooled air can be further dehumidified secondarily, further ensuring the dryness of the air entering the first chamber 11. And the detachable setting of the dehumidification layer 346 allows the dehumidification layer 346 to be replaced according to needs, reducing the replacement difficulty.

[0046] The dehumidification layer 346 can be connected to the inner side wall of the housing 33 (i.e., the inner side wall of the first side plate 331) by means of screw fixation, or a card slot can be provided on the inner side wall of the first side plate 331, and the dehumidification layer 346 can be fixed to the inner side wall of the first side plate 331 through the card slot.

[0047] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above embodiments, but can be manufactured in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or basic characteristics of the present invention. Therefore, it should be understood that the above embodiments are exemplary in all aspects and not restrictive.

Claims

1. An electric control box, comprising a box body, characterized in that, Inside the box body, it is divided into a first chamber and a second chamber arranged vertically by a partition board. The second chamber is located below the first chamber. The first chamber is used to arrange the components of the electric control box. An opening communicating with the second chamber is formed on the box side plate of the box body. A dehumidifying device is arranged in the second chamber. The dehumidifying device can move from the opening to the outside of the box body. A handle is arranged on one side surface of the dehumidifying device adjacent to the opening. The dehumidifying device includes a first side plate facing the partition board and a second side plate facing the bottom plate of the box body. The first side plate has a first air outlet. A first air inlet communicating with the first air outlet is formed on the partition board. A second air inlet is formed on the second side plate. A third air inlet communicating with the second air inlet is formed on the bottom plate. A dehumidifying component is arranged in the dehumidifying device and located between the second air inlet and the first air outlet. External air enters the first chamber after being dehumidified by the dehumidifying component through the third air inlet and the second air inlet. A second air outlet is arranged on the top plate of the box body. A water blocking rack is arranged at the position corresponding to the second air outlet at the top of the box body. Four legs are arranged below the bottom plate so that a ventilation channel is formed at an interval between the bottom plate and the ground. The ventilation channel is communicated with the third air inlet; A locking groove is recessed at the bottom of the dehumidifying device. A locking rod is arranged on the inner side of the bottom plate. The locking rod is connected with a driving member. The driving member drives the locking rod to move in the vertical direction to selectively insert into the locking groove. The driving member is connected with a controller. An unlocking member is arranged on the box side plate of the box body. The unlocking member is connected with the controller so that the locking rod is separated from the locking groove to realize unlocking; A pushing mechanism is arranged on the chamber wall of the second chamber facing the opening. The pushing mechanism can push the dehumidifying device 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 close to the bottom plate. A pedal is arranged at one end of the dehumidifying device where the handle is arranged. Stepping on the pedal, the top of the dehumidifying device collides with the starting switch, and the pushing cylinder extends to push the dehumidifying device out.

2. The electric control box according to claim 1, characterized in that, A sensor is arranged on the inner side wall of the bottom plate. A reflecting sheet is arranged on one side surface of the partition board facing the bottom plate opposite to the sensor. The sensor is connected with the controller. When the dehumidifying device is inserted into the second chamber, the optical path between the sensor and the reflecting sheet is blocked, and the controller controls the driving member to start. The driving member controls the locking rod to extend and insert into the locking groove.

3. The electric control box according to claim 1, characterized in that, The inner sidewall of the bottom plate has a guiding groove, the length of the guiding groove extends along the moving direction of the dehumidifying device, the guiding groove has a first groove wall and a second groove wall oppositely arranged along its own length direction, the first groove wall is adjacent to the opening, the first groove wall inclines towards the opening along the moving direction of the dehumidifying device, the second groove wall is arranged vertically, and wheels are correspondingly arranged at the bottom of the dehumidifying device, and the wheels are arranged in the guiding groove.

4. The electric control box according to any one of claims 1 to 3, characterized in that, A plug is arranged on the end face of the end of the dehumidifying device away from the handle, a socket is arranged on the chamber wall of the second chamber facing the opening, the plug is inserted into the socket, and the power supply module of the box body supplies power to the dehumidifying device.

5. The electric control box according to claim 4, characterized in that, The dehumidifying device includes a housing, the dehumidifying component includes a semiconductor refrigeration sheet, the housing is separated into a third chamber and a fourth chamber arranged horizontally by the semiconductor refrigeration sheet, the heating surface of the semiconductor refrigeration sheet faces the third chamber, the refrigerating surface of the semiconductor refrigeration sheet 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 both communicated with the fourth chamber, a part of the circulating heat exchange tube is in close contact with the refrigerating surface, and a part is arranged between the second air inlet and the first air outlet, a first heat dissipation hole is penetrated and opened on the chamber wall of the second chamber facing the opening, a second heat dissipation hole is opened on the housing facing the first heat dissipation hole, and the second heat dissipation hole is communicated with the third chamber.

6. The electric control box according to claim 5, characterized in that, The circulating heat exchange tube includes a first part and a second part which are communicated with each other, a 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, and the first fan is used for sending the dried cold air after heat exchange into the first chamber, a second fan is arranged in the third chamber, and the second fan is used for discharging the hot air in the third chamber to the outside of the box body through the first heat dissipation hole and the second heat dissipation hole; and / or A exhaust fan is arranged at the second air outlet, and the exhaust fan is used for discharging the air in the first chamber towards the outside of the box body.

7. The electric control box according to claim 5, characterized in that, A ventilated dehumidifying layer is detachably arranged at the top of the fourth chamber.

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