Rainproof power distribution cabinet

Abstract

The utility model discloses a rainproof power distribution cabinet, and relates to the technical field of power distribution cabinets. The rainproof power distribution cabinet comprises a box shell, a top cabinet, a box door, a sealing strip, an exhaust pipe and an exhaust fan. The box shell is provided with a doorway. The sealing strip is annularly attached to the inner side face of the box door. The box door is locked on the box shell, and the sealing strip is tightly attached to the periphery of the doorway. An outer vent hole and an inner vent hole are formed in the bottom face of the top cabinet. And the top surface and all side surfaces of the top cabinet are closed. The bottom face of the top cabinet is connected with the top of the box shell, the outer vent holes are located outside the box shell, and the inner vent holes are located in the box shell and communicated with the interior of the box shell. The exhaust pipe is communicated with the interior of the box shell. And the exhaust fan is arranged in the exhaust pipe. The exhaust fan is started to exhaust hot air outwards, external cold air enters from the outer vent holes and enters the box shell through the inner vent holes, and cold and hot air exchange is completed. As the top surface and all side surfaces of the top cabinet are closed, general rainwater cannot enter the top cabinet, and the box door is connected with the box shell through the sealing strip, so that the power distribution cabinet has a rainproof function while having better heat dissipation.

Description

Technical Field

[0001] This application relates to the technical field of distribution cabinets, and specifically relates to a rainproof distribution cabinet. Background Art

[0002] Distribution cabinets are common electrical devices for power distribution and control. Due to limitations in on-site conditions, many distribution cabinets are placed in outdoor environments. Since the internal components of the distribution cabinet generate heat during operation, it is necessary to dissipate the heat generated inside the distribution cabinet. At the same time, rain leakage needs to be prevented during heat dissipation. Common solutions are to use distribution cabinets with a high protection level or to build a rainproof shed outside the distribution cabinet. However, distribution cabinets with a high protection level often do not have good heat dissipation performance, and the rainproof shed will occupy a large space, affecting personnel passage. Utility Model Content

[0003] In view of the problem that in the solutions for heat dissipation and rain protection of distribution cabinets, distribution cabinets with a high protection level often do not have good heat dissipation performance, and the rainproof shed will occupy a large space, affecting personnel passage, the following technical solutions are proposed in this application to solve this problem.

[0004] A rainproof distribution cabinet includes a cabinet shell, a top cabinet, a cabinet door, a sealing strip, an exhaust pipe, and an exhaust fan.

[0005] The cabinet shell is provided with a doorway. The sealing strip is circumferentially attached to the inner side of the cabinet door.

[0006] The cabinet door is hinged to the cabinet shell. Locking the cabinet door to the cabinet shell can make the sealing strip closely fit around the outer periphery of the doorway of the cabinet shell.

[0007] The bottom surface of the top cabinet is provided with an outer ventilation hole and an inner ventilation hole. The top surface and all side surfaces of the top cabinet are closed.

[0008] The top of the cabinet shell is open, and the top cabinet is connected to the top of the cabinet shell with its bottom surface, so that the outer ventilation hole is outside the cabinet shell, and the inner ventilation hole is inside the cabinet shell and communicates with the opening.

[0009] The exhaust pipe is connected to the inside of the cabinet shell, and the outlet end of the exhaust pipe is outside the cabinet shell and faces downward. The exhaust fan is installed in the exhaust pipe.

[0010] By adopting the above technical solution, the exhaust fan is started to exhaust air outwards. The relatively cold outside air enters through the outer ventilation holes at the bottom surface of the top cabinet and enters the cabinet shell through the inner ventilation holes, which can exchange the relatively hot air in the cabinet shell. The relatively hot air is attracted by the negative pressure generated by the exhaust fan and discharged out of the cabinet shell through the exhaust duct. During this heat dissipation process, since the top surface and all sides of the top cabinet are closed, general rainwater cannot enter the top cabinet, and thus cannot enter the cabinet shell either. Moreover, the cabinet door forms a sealed connection with the cabinet shell through the sealing strip, and rainwater generally cannot pass through the connection seam between the cabinet door and the cabinet shell. Therefore, this power distribution cabinet has a rainproof function while dissipating heat well, and there is no need to set up a rainproof shed, occupying a small space.

[0011] A preferred solution of this rainproof power distribution cabinet is that the rainproof power distribution cabinet includes four of the cabinet doors and four of the sealing strips. Two of the door openings are provided on the front surface of the cabinet shell, and two of the door openings are provided on the back surface of the cabinet shell. The two door openings on the front and the two door openings on the back are separated by partition strips respectively. The four sealing strips are respectively attached around the inner sides of the four cabinet doors in a ring shape. The four cabinet doors are all hinged to the cabinet shell. Each cabinet door is used to close one of the door openings, and each cabinet door is locked on the partition strip of the cabinet shell, and each sealing strip closely fits around the outer periphery of the door opening.

[0012] By adopting the above technical solution, both the front and back sides of the cabinet shell can be opened, which is convenient for checking the condition of the internal components and is also beneficial for heat dissipation in case of emergency.

[0013] A preferred solution of this rainproof power distribution cabinet is that a filter screen is installed at the inlet end of the exhaust duct located in the cabinet shell.

[0014] By adopting the above technical solution, it is prevented that the exhaust fan sucks in wires, components, etc., which has a protective effect on the wires, components and the exhaust fan.

[0015] A preferred solution of this rainproof power distribution cabinet is that the rainproof power distribution cabinet has three of the exhaust ducts, and a filter screen is installed at the inlet end of each exhaust duct located in the cabinet shell. The outlet ends of the three exhaust ducts are all located outside the cabinet shell and face downwards. One of the exhaust ducts is arranged at the upper part of the side surface of the cabinet shell, and the other two exhaust ducts are arranged at the lower part of the side surface of the cabinet shell.

[0016] By adopting the above technical solution, it is possible to directly extract heat from the upper and lower components in the cabinet shell as appropriate, with high heat dissipation efficiency.

[0017] A preferred solution of this rainproof power distribution cabinet is that a filter screen is installed at the outlet end of the exhaust duct.

[0018] By adopting the above technical solution, the filter screen at the outlet end can prevent paper, plastic bags, etc. from entering the discharge pipe and damaging the exhaust fan.

[0019] A preferred solution of the rainproof power distribution cabinet is that a plurality of waist-shaped outer ventilation holes and a plurality of circular inner ventilation holes are formed in the bottom surface of the top cabinet. The length of the outer ventilation hole is 15-25 cm, and the width is 3-5 cm. The diameter of the inner ventilation hole is 15-25 cm.

[0020] By adopting the above technical solution, the relatively narrow outer ventilation holes prevent large objects from entering the top cabinet, and the relatively large inner ventilation holes are beneficial to ventilate the inside of the cabinet shell.

[0021] A preferred solution of the rainproof power distribution cabinet is that the four sides of the top cabinet all extend beyond the cabinet shell, and the four sides of the top cabinet are all provided with the outer ventilation holes, and the outer ventilation holes inside each side are parallel to each other.

[0022] By adopting the above technical solution, the top cabinet can shield the box door and other sides from rain. Each side having an outer ventilation hole can improve the ventilation efficiency. The outer ventilation holes inside each side are parallel to each other, so the total ventilation area is large and the ventilation efficiency is high. The absence of an integrated large ventilation hole can prevent large objects from entering the top cabinet.

[0023] A preferred solution of the rainproof power distribution cabinet is that on the surface where the box door is located, the width by which the top cabinet extends beyond the cabinet shell is a, the thickness of the box door is b, and the thickness of the sealing strip is c, and a - b - c = 20-30 cm. The distance from the bottom surface of the top cabinet to the top surface of the box door is 1-5 cm.

[0024] By adopting the above technical solution, the top cabinet has a good rain shielding effect on the connection between the box door and the cabinet shell.

[0025] In summary, the rainproof power distribution cabinet of the present application has the following beneficial effects: When the power distribution cabinet starts the exhaust fan to exhaust air outward, the relatively cold outside air enters through the outer ventilation holes on the bottom surface of the top cabinet and enters the cabinet shell through the inner ventilation holes, so as to exchange the relatively hot air in the cabinet shell. The relatively hot air is attracted by the negative pressure generated by the exhaust fan and discharged out of the cabinet shell through the exhaust pipe. During this heat dissipation process, since the top surface and all sides of the top cabinet are closed, ordinary rainwater cannot enter the top cabinet, and thus cannot enter the cabinet shell from the top cabinet. Moreover, the box door forms a sealed connection with the cabinet shell through the sealing strip, and rainwater generally cannot pass through the connection seam between the box door and the cabinet shell. Therefore, the power distribution cabinet has a rainproof function while having good heat dissipation, and the power distribution cabinet does not need to build a rain shelter and occupies a small space. Description of the Drawings

[0026] Figure 1 It is a diagram of the open state of the rainproof power distribution cabinet.

[0027] Figure 2 It is Figure 1 Another perspective view of the rainproof power distribution cabinet.

[0028] Figure 3 For Figure 1 Structural diagram of a rainproof power distribution cabinet in a closed state.

[0029] Figure 4 For Figure 1 Bottom view of the rainproof power distribution cabinet.

[0030] Figure 5 For Figure 1 Structural diagram of the rainproof power distribution cabinet with a filter installed.

[0031] Reference numerals: 1, cabinet shell; 2, top cabinet; 3, cabinet door; 4, sealing strip; 5, exhaust duct; 6, exhaust fan; 101, doorway; 201, external ventilation hole; 202, internal ventilation hole; 102, partition strip; 7, filter. Detailed implementation manners

[0032] The present application will be further described below with reference to the accompanying drawings.

[0033] A rainproof power distribution cabinet can prevent rainwater from entering the power distribution cabinet while achieving good heat dissipation. As Figure 1 shown, the power distribution cabinet includes a cabinet shell 1, a top cabinet 2, a cabinet door 3, a sealing strip 4, and an exhaust duct 5. As Figure 2 shown, the power distribution cabinet further includes an exhaust fan 6, and the exhaust fan 6 is installed inside the inner end of the exhaust duct 5.

[0034] The cabinet shell 1 is provided with a doorway 101. The sealing strip 4 is attached around the inner side surface of the cabinet door 3. The cabinet door 3 is hinged to the cabinet shell 1. As Figure 3 shown, locking the cabinet door 3 to the cabinet shell 1 can make the sealing strip 4 closely fit around the outer periphery of the doorway 101 of the cabinet shell 1, thereby forming a sealed connection to prevent rainwater from entering the connection gap.

[0035] As Figure 4 shown, the top cabinet 2 is an empty box body, and the bottom surface of the top cabinet 2 is provided with an external ventilation hole 201 and an internal ventilation hole 202. The top surface and all side surfaces of the top cabinet 2 are closed, so that the top cabinet 2 has a rain shielding function.

[0036] The top of the cabinet shell 1 is open, and the top cabinet 2 is connected to the top of the cabinet shell 1 by its bottom surface, which can be fixed by welding. The external ventilation hole 201 is located outside the cabinet shell 1, and the internal ventilation hole 202 is located inside the cabinet shell 1 and communicates with the opening, that is, communicates with the internal cavity of the cabinet shell 1 to exchange air with the electrical appliances inside the cabinet shell 1 and take away the heat generated by the electrical appliances.

[0037] The exhaust duct 5 is connected to the interior of the cabinet housing 1. The outlet end of the exhaust duct 5 is located outside the cabinet housing 1 and faces downward to prevent rainwater from entering the exhaust duct 5. The exhaust fan 6 is installed in the exhaust duct 5 and is used to draw the hot air inside the cabinet housing 1 out of the cabinet housing 1.

[0038] The working mode of the above power distribution cabinet is as follows: when the exhaust fan 6 is started to exhaust outward, the relatively cold outside air enters through the outer ventilation holes 201 at the bottom surface of the top cabinet 2 and enters the cabinet housing 1 through the inner ventilation holes 202, so that the relatively hot air in the cabinet housing 1 can be exchanged. The relatively hot air is attracted by the negative pressure generated by the exhaust fan 6 and is discharged out of the cabinet housing 1 through the exhaust duct 5. During this heat dissipation process, since the top surface and all side surfaces of the top cabinet 2 are closed, general rainwater cannot enter the top cabinet 2, and thus cannot enter the cabinet housing 1 from the top cabinet 2. Moreover, the cabinet door 3 forms a sealed connection with the cabinet housing 1 through the sealing strip 4, and rainwater generally cannot pass through the connection seam between the cabinet door 3 and the cabinet housing 1. Therefore, the power distribution cabinet has a rain-proof function while having good heat dissipation. The power distribution cabinet does not need to set up a rain-proof shed and occupies a small space.

[0039] For the convenience of maintenance and heat dissipation, the rain-proof type power distribution cabinet is provided with four cabinet doors 3 and four sealing strips 4. Two door openings 101 are provided on the front surface of the cabinet housing 1, and two door openings 101 are provided on the back surface of the cabinet housing 1. The two door openings 101 on the front surface and the two door openings 101 on the back surface are respectively separated by vertical partition strips 102. The vertical partition strips 102 and the main body of the cabinet housing 1 are integrally formed and arranged in the same plane. The four sealing strips 4 are respectively attached to the inner sides of the four cabinet doors 3 in a ring shape. The four cabinet doors 3 are all hinged to the cabinet housing 1. Each cabinet door 3 is used to close one of the door openings 101. When each cabinet door 3 is locked to the partition strip 102 of the cabinet housing 1, each sealing strip 4 is closely attached to the outer periphery of the door opening 101. This locking method can be that the lock on the cabinet door 3 is rotated and stuck on the back surface of the partition strip 102, so as to lock the cabinet door 3 to the cabinet housing 1.

[0040] Both the front and back sides of the above cabinet housing 1 can be opened, which is convenient for checking the condition of the internal components and is also beneficial for heat dissipation in case of emergency.

[0041] Such as Figure 5 , it can be selected that a filter screen 7 is installed at the inlet end of the exhaust duct 5 located in the cabinet housing 1. This can prevent the exhaust fan 6 from sucking in wires, components, etc., and has a protective effect on the wires, components and the exhaust fan 6.

[0042] Optionally, the rainproof power distribution cabinet has three exhaust ducts 5, and a filter screen 7 is installed at the inlet end of each exhaust duct 5 located in the cabinet housing 1. The outlet ends of the three exhaust ducts 5 are all located outside the cabinet housing 1 and face downward. One of the exhaust ducts 5 is arranged at the upper part of the side surface of the cabinet housing 1, and the other two exhaust ducts 5 are arranged at the lower part of the side surface of the cabinet housing 1. The three exhaust ducts 5 can directly extract air for heat dissipation from the upper and middle components and the lower components in the cabinet housing 1, with high heat dissipation efficiency.

[0043] As Figure 4 , a filter screen 7 can also be installed at the outlet end of the exhaust duct 5, and this filter screen 7 can prevent paper, plastic bags, etc. from entering the discharge pipe and damaging the exhaust fan 6.

[0044] In order to enable the top cabinet 2 to have a better ventilation effect, it is designed that the bottom surface of the top cabinet 2 is provided with a plurality of waist-shaped outer ventilation holes 201 and a plurality of circular inner ventilation holes 202. The length of the outer ventilation holes 201 is 15 - 25 cm, and the width is 3 - 5 cm. The diameter of the inner ventilation holes 202 is 15 - 25 cm. The relatively narrower outer ventilation holes 201 can prevent large objects from entering the top cabinet 2, and the larger inner ventilation holes 202 are conducive to the top cabinet 2 introducing external air into the interior of the cabinet housing 1.

[0045] In order to enable the top cabinet 2 to have a good rain shielding effect, it is designed that the four sides of the top cabinet 2 all extend beyond the cabinet housing 1, and the four sides of the top cabinet 2 are all provided with the outer ventilation holes 201, and the outer ventilation holes 201 inside each side are parallel to each other. The top cabinet 2 can shield rain from the cabinet door 3 and other side surfaces of the cabinet housing 1. Each side having the outer ventilation holes 201 can improve the ventilation efficiency. Since the outer ventilation holes 201 inside each side are parallel to each other, the total ventilation area is relatively large and the ventilation efficiency is high. Each side not being provided with an integral large ventilation hole can prevent large objects, etc. from entering the top cabinet 2.

[0046] In order to enable the top cabinet 2 to have a good rain shielding effect, it is necessary to strengthen the rain protection of the surface where the cabinet door 3 is located. Therefore, it is designed that on the surface where the cabinet door 3 is located, the width by which the top cabinet 2 extends beyond the cabinet housing 1 is a, the thickness of the cabinet door 3 is b, and the thickness of the sealing strip 4 is c, and a - b - c = 20 - 30 cm. The distance from the bottom surface of the top cabinet 2 to the top surface of the cabinet door 3 is 1 - 5 cm. After the above design, the top cabinet 2 has a good rain shielding effect on the connection between the cabinet door 3 and the cabinet housing 1.

[0047] The heat dissipation and rain protection process of the power distribution cabinet is as follows: Start the exhaust fan 6. The exhaust fan 6 extracts the hot air in the cabinet shell 1 and discharges it into the atmosphere through the exhaust pipe. On the other hand, due to the exhaust effect of the exhaust fan 6, a negative pressure is generated inside the cabinet shell 1. Under the action of the atmospheric pressure, the relatively cold air outside the cabinet shell 1 is inhaled into the top cabinet 2 through the outer ventilation holes 201. This relatively cold air continues to enter the cabinet shell 1 through the inner ventilation holes 202, completing the exchange of hot and cold air. In the above heat dissipation process, the top surface and all side surfaces of the top cabinet 2 are closed to block the entry of rainwater. There is only an opening at the bottom surface, and it is not easy for rainwater to enter the cabinet shell 1 from the opening at the bottom surface. Therefore, while effectively dissipating heat, the power distribution cabinet can also prevent rain, occupies a small area, and is convenient to use.

[0048] The above is only the preferred embodiment of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, various equivalent replacements and modifications can be made according to the above description, and these replacements and modifications should be covered within the protection scope of the present application.

Claims

1. A rainproof distribution cabinet, characterized in that: It comprises a box shell (1), a top cabinet (2), a box door (3), a sealing strip (4), an exhaust duct (5) and an exhaust fan (6); The box shell (1) is provided with a door (101); the sealing strip (4) is attached to the inner side of the box door (3); The box door (3) is hinged on the box shell (1); the box door (3) is locked on the box shell (1) so that the sealing strip (4) is tightly fitted on the outer periphery of the door opening (101) of the box shell (1); The bottom surface of the top cabinet (2) is provided with an external ventilation hole (201) and an internal ventilation hole (202); the top surface and all side surfaces of the top cabinet (2) are closed; The top of the box shell (1) is open, and the top cabinet (2) is connected to the top of the box shell (1) with its bottom surface, so that the outer vent hole (201) is located outside the box shell (1), and the inner vent hole (202) is located inside the box shell (1) and connected to the opening; The exhaust duct (5) is connected to the interior of the box shell (1), and the outlet end of the exhaust duct (5) is located outside the box shell (1) and faces downward; the exhaust fan (6) is installed in the exhaust duct (5).

2. The rainproof distribution cabinet according to claim 1, characterized in that: The rainproof power distribution cabinet comprises four cabinet doors (3) and four sealing strips (4); two doorways (101) are provided on the front of the cabinet shell (1), and two doorways (101) are provided on the back of the cabinet shell (1); the two doorways (101) on the front and the two doorways (101) on the back are separated by partition strips (102) respectively; The four sealing strips (4) are attached to the inner side surfaces of the four cabinet doors (3) in a ring-like manner; The four box doors (3) are hinged to the box shell (1); each box door (3) is used to close one of the door openings (101), and each box door (3) is locked on a partition strip (102) of the box shell (1), and each sealing strip (4) is tightly fitted to the outer periphery of the door opening (101).

3. The rainproof distribution cabinet according to claim 1, characterized in that: A filter screen (7) is installed at the inlet end of the exhaust pipe (5) located in the box shell (1).

4. The rainproof distribution cabinet according to claim 3, characterized in that: The rainproof power distribution cabinet has three exhaust ducts (5), and a filter (7) is installed at the inlet end of each exhaust duct (5) located in the box shell (1); the outlet ends of the three exhaust ducts (5) are located outside the box shell (1) and face downward; one of the exhaust ducts (5) is arranged at the upper part of the side of the box shell (1), and the other two exhaust ducts (5) are arranged at the lower part of the side of the box shell (1).

5. The rainproof distribution cabinet according to claim 1, characterized in that: A filter screen (7) is installed at the outlet end of the exhaust pipe (5).

6. The rainproof distribution cabinet according to claim 1, characterized in that: The bottom surface of the top cabinet (2) is provided with a plurality of waist-shaped outer ventilation holes (201) and a plurality of circular inner ventilation holes (202); the outer ventilation holes (201) are 15 to 25 cm in length and 3 to 5 cm in width; and the inner ventilation holes (202) are 15 to 25 cm in diameter.

7. The rainproof distribution cabinet according to claim 6, characterized in that: The four sides of the top cabinet (2) all extend beyond the box shell (1); the four sides of the top cabinet (2) are all provided with external ventilation holes (201); and the external ventilation holes (201) in each side are parallel to each other.

8. The rainproof power distribution cabinet according to claim 1, characterized in that: On the surface where the box door (3) is located, the width of the top cabinet (2) extending beyond the box shell (1) is a, the thickness of the box door (3) is b, the thickness of the sealing strip (4) is c, and abc=20-30 cm; the distance from the bottom surface of the top cabinet (2) to the top surface of the box door (3) is 1-5 cm.

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