Power distribution cabinet capable of reducing heat dissipation blind area

Abstract

The invention provides a power distribution cabinet capable of reducing heat dissipation blind areas, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a power distribution cabinet body, a plurality of layered heat dissipation assemblies and a heat dissipation air exhaust assembly, the power distribution cabinet body is internally provided with a cabinet body inner cavity, the layered heat dissipation assemblies are arranged on the inner wall of the cabinet body inner cavity, and the heat dissipation air exhaust assembly is arranged on the inner wall of the cabinet body inner cavity. A circuit board mounting slide rail is arranged between every two adjacent layered heat dissipation assemblies; according to the invention, the refrigeration pump machine in the heat dissipation host is started to cool the layered heat dissipation assemblies, then the fan in the heat dissipation host is started, and wind power is introduced into each layered heat dissipation assembly through the heat dissipation main air duct by the heat dissipation air exhaust assembly, so that low-temperature air can be blown to each electric appliance element, and the heat dissipation efficiency is improved. And finally, the air is blown out through the power distribution cabinet door plate heat dissipation net on the power distribution cabinet door plate, and compared with an existing single inlet and outlet air circulation cooling mode, electrical components in the power distribution cabinet are cooled more directly and averagely, and cooling blind areas are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a power distribution cabinet with reduced heat dissipation blind areas. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet, which is the final equipment of the distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in places where the load is relatively dispersed and there are fewer circuits; the motor control center is used in places where the load is concentrated and there are more circuits. They distribute the electric energy of a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load. However, there are many circuits connected to the distribution cabinet in daily work, and the operation of the load will generate a large amount of heat that cannot be discharged. The existing solution for the heat dissipation of the distribution cabinet can only have a fixed air path under a single air inlet and outlet mode, resulting in dead corners and blind spots in the heat dissipation space, affecting the heat dissipation effect and causing hidden dangers to the electrical components in the blind spots. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a power distribution cabinet with reduced heat dissipation blind areas, thereby solving the problems raised in the background technology.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a power distribution cabinet for reducing heat dissipation blind spots, comprising a power distribution cabinet body, a layered heat dissipation component and a heat dissipation exhaust component, wherein a cabinet inner cavity is provided in the power distribution cabinet body, the layered heat dissipation component is provided on the inner wall of the cabinet inner cavity, and a plurality of the layered heat dissipation components are provided, and a circuit board mounting slide rail is provided between each of the layered heat dissipation components;

[0005] The heat dissipation and exhaust assembly is arranged at the top of the power distribution cabinet body, and a heat dissipation host is fixedly installed at the rear end of the power distribution cabinet body, and a fan and a refrigeration pump are arranged in the heat dissipation host.

[0006] Preferably, heat dissipation side covers are fixedly installed at both ends of each layered heat dissipation component and located on the outside of the power distribution cabinet, and a heat dissipation main air duct is arranged at the rear end of the inner cavity of the cabinet.

[0007] Preferably, a distribution cabinet door panel is rotatably mounted on the front side of the distribution cabinet body, and a plurality of distribution cabinet door panel heat dissipation nets are arranged on the distribution cabinet door panel, wherein a distribution cabinet control panel is arranged on the middle distribution cabinet door panel heat dissipation net.

[0008] Preferably, the layered heat dissipation assembly comprises: a heat dissipation cavity plate, a ventilation heat dissipation plate, a ventilation heat dissipation hole, a cold air pipe connecting groove, a connecting groove inner cavity, a main pipe connecting pipe, a cooling direct connecting pipe, a cooling connecting pipe, an inner groove of a cavity plate, a main branch pipe, a branch pipe inlet hole, and a heat dissipation elbow;

[0009] The upper and lower surfaces of the heat dissipation cavity plate are both provided with ventilation heat dissipation plates, and the two ventilation heat dissipation plates are both provided with a plurality of ventilation heat dissipation holes, and the heat dissipation cavity plate is provided with a cavity plate inner groove, and both ends of the heat dissipation cavity plate are integrated with cold air pipe connecting grooves, and the two cold air pipe connecting grooves are both provided with connecting groove inner cavities;

[0010] Two diversion pipe inlet holes are provided at the rear end of the inner groove of the cavity plate, the rear end of the diversion pipe inlet holes is fixedly connected with a main diversion pipe, and the middle of the main diversion pipe is fixedly connected with a main pipe connecting pipe;

[0011] The cold air pipe connecting grooves at both ends are provided with cooling direct connection pipes, the rear ends of the cooling direct connection pipes are fixedly installed with cooling connecting pipes, and a heat dissipation elbow is provided between the front ends of the two cooling direct connection pipes.

[0012] Preferably, the main pipeline connecting pipe is connected to the heat dissipation main air duct.

[0013] Preferably, the cooling connecting pipe is connected to a refrigeration pump in the heat dissipation host.

[0014] Preferably, the heat dissipation elbow is arranged in the inner groove of the cavity plate.

[0015] Preferably, the heat dissipation exhaust assembly comprises: an exhaust assembly top plate, an air pump upper tube, a corner connection block, an air blowing connection pipe, an air inlet cavity shell, an air collecting cover, a guide dust shield, a one-way valve slot, a one-way valve mounting seat, an air one-way valve, a one-way valve sealing ring, and a main pipeline top pipe;

[0016] An upper tube of the air pump is fixedly installed on the upper end of the top plate of the air extraction component, a corner connecting block is fixedly installed on the upper end of the upper tube of the air pump, a blowing connecting pipe is fixedly connected to the front end of the corner connecting block, an air inlet chamber shell is fixedly connected to the front end of the blowing connecting pipe, an air collecting hood is integrated at the front end of the air inlet chamber shell, and a plurality of guide dust-shielding plates are provided on the air inlet chamber shell and the air collecting hood;

[0017] A one-way valve slot is provided in the air inlet chamber shell, a one-way valve mounting seat is fixedly installed on the inner wall surface of the one-way valve slot, an air one-way valve is fixedly installed at the lower end of the one-way valve mounting seat, and a main pipeline top pipe is provided at the lower end of the air one-way valve.

[0018] Preferably, the main pipeline top pipe is fixedly connected to the top of the heat dissipation main air duct.

[0019] Preferably, the lower end of the upper tube of the air pump is fixedly connected to a fan connecting tube, and the lower end of the fan connecting tube is fixedly connected to an air outlet of the fan.

[0020] The present invention provides a power distribution cabinet with reduced heat dissipation blind area. It has the following beneficial effects:

[0021] The present invention starts the refrigeration pump in the heat dissipation host to cool the layered heat dissipation components, then starts the fan in the heat dissipation host, and passes the wind through the heat dissipation main air duct to each layered heat dissipation component through the heat dissipation exhaust component, so that the low temperature control can be blown to each electrical component, and finally blown out through the power distribution cabinet door panel heat dissipation net on the power distribution cabinet door panel. Compared with the current single inlet and outlet air circulation cooling method, it cools the electrical components in the power distribution cabinet more directly and evenly, reducing the blind area of ​​cooling;

[0022] Among them, the cooling liquid in the refrigeration pump is continuously circulated in the cooling straight pipe, the heat dissipation elbow pipe and the cooling connecting pipe at the other end through the cooling connecting pipe in the layered heat dissipation component to cool the air in the groove of the cavity plate, and the wind in the heat dissipation main air duct is intercepted through the main pipe connecting pipe and blown out through the main branch pipe, so that the cold air in the groove of the cavity plate can be blown to the gap between the heat dissipation cavity plates through the ventilation and heat dissipation holes;

[0023] Among them, the wind is blown out through the fan at the fan connecting pipe, and all the wind is sent from the middle of the one-way valve sealing ring to the top pipe of the main pipe at the lower end through the air one-way valve, until it reaches the main heat dissipation air duct, and the negative pressure formed by the air one-way valve in the empty slot of the one-way valve on one side is neutralized from the wind gathering hood to the outside by the negative pressure, so as to prevent excessive wind from shaking the fixed structure of the electrical components installed inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the middle-layer heat dissipation assembly of the present invention;

[0027] Figure 4 It is a front view structural schematic diagram of the middle layer heat dissipation assembly of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-sectional structure along line aa;

[0029] Figure 6 It is a structural schematic diagram of the heat dissipation and air extraction component in the present invention;

[0030] Figure 7 It is a side view structural schematic diagram of the heat dissipation and exhaust assembly in the present invention;

[0031] Figure 8 For the present invention Figure 7Schematic diagram of the cross-sectional structure of the bb line.

[0032] Among them, 1. Power distribution cabinet; 2. Cabinet cavity; 3. Layered heat dissipation component; 301. Heat dissipation cavity plate; 302. Ventilation heat dissipation plate; 303. Ventilation heat dissipation hole; 304. Cold air pipe connecting groove; 305. Connecting groove cavity; 306. Main pipeline connecting pipe; 307. Cooling direct connection pipe; 308. Cooling connecting pipe; 309. Cavity plate inner groove; 310. Main branch pipe; 311. Branch pipe inlet hole; 312. Heat dissipation elbow; 4. Circuit board mounting slide rail; 5. Heat dissipation exhaust component; 501. Exhaust group Component top plate; 502, air pump upper pipe; 503, corner connection block; 504, blowing connection pipe; 505, air inlet chamber shell; 506, wind hood; 507, guide dust shield; 508, one-way valve slot; 509, one-way valve mounting seat; 510, air one-way valve; 511, one-way valve sealing ring; 512, main pipeline top pipe; 513, fan connection pipe; 6, heat dissipation host; 7, heat dissipation side cover; 8, distribution cabinet door panel; 9, distribution cabinet door panel heat dissipation net; 10, distribution cabinet control panel; 11, heat dissipation main air duct. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a power distribution cabinet for reducing heat dissipation blind spots, including a power distribution cabinet body 1, a layered heat dissipation component 3 and a heat dissipation exhaust component 5, wherein a cabinet inner cavity 2 is provided in the power distribution cabinet body 1, the layered heat dissipation component 3 is arranged on the inner wall of the cabinet inner cavity 2, and a plurality of the layered heat dissipation components 3 are provided, and a circuit board mounting slide rail 4 is provided between each of the layered heat dissipation components 3; the heat dissipation exhaust component 5 is provided at the top of the power distribution cabinet body 1, a heat dissipation host 6 is fixedly installed at the rear end of the power distribution cabinet body 1, a fan and a refrigeration pump are arranged in the heat dissipation host 6, a heat dissipation side cover 7 is fixedly installed at both ends of each layered heat dissipation component 3 and located on the outside of the power distribution cabinet body 1, a heat dissipation main air duct 11 is provided at the rear end of the cabinet inner cavity 2, a power distribution cabinet door panel 8 is rotatably installed on the side of the front end of the power distribution cabinet body 1, and a plurality of power distribution cabinet door panel heat dissipation nets 9 are provided on the power distribution cabinet door panel 8, wherein a power distribution cabinet control panel 10 is provided on the middle power distribution cabinet door panel heat dissipation net 9.

[0035] Through the above technical scheme, the layered heat dissipation component 3 is cooled by starting the refrigeration pump in the heat dissipation host 6, and then the fan in the heat dissipation host 6 is started, and the wind is passed to each layered heat dissipation component 3 through the heat dissipation main air duct 11 through the heat dissipation exhaust component 5, so that the low temperature control can be blown to each electrical component, and finally blown out through the distribution cabinet door panel heat dissipation net 9 on the distribution cabinet door panel 8. Compared with the current single inlet and outlet air circulation cooling method, it is more direct and even to cool the electrical components in the distribution cabinet, reducing the cooling blind area.

[0036] like Figure 1 , Figures 3 to 5 As shown, the layered heat dissipation component 3 includes: a heat dissipation cavity plate 301, a ventilation heat dissipation plate 302, ventilation heat dissipation holes 303, a cold air pipe connecting groove 304, a connecting groove inner cavity 305, a main pipeline connecting pipe 306, a cooling direct connection pipe 307, a cooling connecting pipe 308, a cavity plate inner groove 309, a main branch pipe 310, a branch pipe inlet hole 311, and a heat dissipation elbow 312; the upper and lower surfaces of the heat dissipation cavity plate 301 are both provided with ventilation heat dissipation plates 302, and a plurality of ventilation heat dissipation holes 303 are opened on the two ventilation heat dissipation plates 302. The heat dissipation cavity plate 301 is provided with a cavity plate inner groove 309, and both ends of the heat dissipation cavity plate 301 are integrally provided with cold air pipe connecting grooves 304, and the two cold air pipe connecting grooves 304 are A connecting groove inner cavity 305 is opened on the top; two shunt pipe inlet holes 311 are opened at the rear end of the cavity plate inner groove 309, and the rear end of the shunt pipe inlet hole 311 is fixedly connected with the main shunt pipe 310, and the middle of the main shunt pipe 310 is fixedly connected with the main pipe connecting pipe 306; cooling direct-connecting pipes 307 are arranged in the cold air pipe connecting grooves 304 at both ends, and cooling connecting pipes 308 are fixedly installed at the rear end of the cooling direct-connecting pipes 307, and a heat dissipation elbow 312 is arranged between the front ends of the two cooling direct-connecting pipes 307, the main pipe connecting pipe 306 is connected with the heat dissipation main air duct 11, the cooling connecting pipe 308 is connected to the refrigeration pump machine in the heat dissipation host 6, and the heat dissipation elbow 312 is arranged in the cavity plate inner groove 309.

[0037] Through the above technical scheme, the cooling liquid in the refrigeration pump is continuously circulated in the cooling straight pipe 307, the heat dissipation elbow 312 and the cooling connecting pipe 308 at the other end through the cooling connecting pipe 308 in the layered heat dissipation component 3, so as to cool the air in the groove 309 in the cavity plate, and intercept the wind in the heat dissipation main air duct 11 through the main pipe connecting pipe 306 and blow it out through the main branch pipe 310, so that the cold air in the groove 309 in the cavity plate can be blown to the gap between the heat dissipation cavity plates 301 through the ventilation and heat dissipation holes 303.

[0038] like Figure 1 , Figures 6 to 8As shown, the heat dissipation exhaust component 5 includes: an exhaust component top plate 501, an air pump upper tube 502, a corner connecting block 503, a blowing connecting pipe 504, an air inlet chamber shell 505, an air collecting cover 506, a guide dust shield plate 507, a one-way valve slot 508, a one-way valve mounting seat 509, an air one-way valve 510, a one-way valve sealing ring 511, and a main pipeline top pipe 512; the air pump upper tube 502 is fixedly installed on the upper end of the exhaust component top plate 501, and the corner connecting block 503 is fixedly installed on the upper end of the air pump upper tube 502, and the front end of the corner connecting block 503 is fixedly connected to the blowing connecting pipe 504, and the front end of the blowing connecting pipe 504 is fixedly connected to the air inlet chamber shell 505. An air collecting hood 506 is integrally provided at the front end of the air inlet chamber shell 505, and the air inlet chamber shell 505 and the air collecting hood 506 are provided with a plurality of guide dust shielding plates 507; a one-way valve slot 508 is opened in the air inlet chamber shell 505, and a one-way valve mounting seat 509 is fixedly installed on the inner wall surface of the one-way valve slot 508, and an air one-way valve 510 is fixedly installed at the lower end of the one-way valve mounting seat 509, and a main pipeline top pipe 512 is provided at the lower end of the air one-way valve 510, and the main pipeline top pipe 512 is fixedly connected to the top of the heat dissipation main air duct 11, and the lower end of the air pump upper tube 502 is fixedly connected to the fan connecting pipe 513, and the lower end of the fan connecting pipe 513 is fixedly connected to the fan outlet.

[0039] Through the above technical solution, the wind is blown out through the fan at the fan connecting pipe 513, and all the wind is sent from the middle of the one-way valve sealing ring 511 to the main pipe top pipe 512 at the lower end through the air one-way valve 510, until it reaches the heat dissipation main air duct 11, and the one-way valve slot 508 on one side is neutralized by the negative pressure formed by the air one-way valve 510 from the wind gathering hood 506 to the outside to prevent excessive wind from shaking the fixed structure of the electrical components installed inside.

[0040] Working principle:

[0041] The present invention starts the refrigeration pump in the heat dissipation main unit 6 to cool the layered heat dissipation component 3, and then starts the fan in the heat dissipation main unit 6, and passes the wind through the heat dissipation main air duct 11 to each layered heat dissipation component 3 through the heat dissipation exhaust component 5, so that the low-temperature control can be blown to each electrical component, and finally blown out through the distribution cabinet door panel heat dissipation net 9 on the distribution cabinet door panel 8. Compared with the current single inlet and outlet air circulation cooling method, it cools the electrical components in the distribution cabinet more directly and evenly, reducing the blind area of ​​cooling;

[0042] Among them, the cooling liquid in the refrigeration pump is continuously circulated in the cooling direct pipe 307, the heat dissipation elbow 312 and the cooling connecting pipe 308 at the other end through the cooling connecting pipe 308 in the layered heat dissipation component 3, so as to cool the air in the groove 309 in the cavity plate, and intercept the wind in the heat dissipation main air duct 11 through the main pipe connecting pipe 306, and blow it out through the main branch pipe 310, so that the cold air in the groove 309 in the cavity plate can be blown to the gap between the heat dissipation cavity plates 301 through the ventilation and heat dissipation holes 303;

[0043] Among them, the wind is blown out through the fan at the fan connecting pipe 513, and all the wind is sent from the middle of the one-way valve sealing ring 511 to the main pipe top pipe 512 at the lower end through the air one-way valve 510, until it reaches the heat dissipation main air duct 11, and the one-way valve slot 508 on one side is neutralized by the negative pressure formed by the air one-way valve 510 from the wind gathering hood 506 to the outside to prevent excessive wind from shaking the fixed structure of the electrical components installed inside.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A power distribution cabinet for reducing heat dissipation blind spots, comprising a power distribution cabinet body (1), a layered heat dissipation component (3) and a heat dissipation exhaust component (5), characterized in that: The power distribution cabinet body (1) is provided with a cabinet inner cavity (2), the layered heat dissipation component (3) is arranged on the inner wall of the cabinet inner cavity (2), and a plurality of the layered heat dissipation components (3) are provided, and a circuit board mounting slide rail (4) is provided between each of the layered heat dissipation components (3); The heat dissipation and exhaust assembly (5) is arranged at the top of the power distribution cabinet body (1), and a heat dissipation host (6) is fixedly installed at the rear end of the power distribution cabinet body (1), and a fan and a refrigeration pump are arranged in the heat dissipation host (6).

2. A power distribution cabinet for reducing heat dissipation blind areas according to claim 1, characterized in that: A heat dissipation side cover (7) is fixedly installed at both ends of each layered heat dissipation component (3) and located outside the power distribution cabinet body (1), and a heat dissipation main air duct (11) is provided at the rear end of the cabinet body cavity (2).

3. A power distribution cabinet for reducing heat dissipation blind areas according to claim 2, characterized in that: A distribution cabinet door panel (8) is rotatably mounted on the front side of the distribution cabinet body (1), and a plurality of distribution cabinet door panel heat dissipation nets (9) are arranged on the distribution cabinet door panel (8), wherein a distribution cabinet control panel (10) is arranged on the middle distribution cabinet door panel heat dissipation net (9).

4. A power distribution cabinet for reducing heat dissipation blind areas according to claim 3, characterized in that: The layered heat dissipation component (3) comprises: a heat dissipation cavity plate (301), a ventilation heat dissipation plate (302), a ventilation heat dissipation hole (303), a cold air pipe connecting groove (304), a connecting groove inner cavity (305), a main pipe connecting pipe (306), a cooling direct connection pipe (307), a cooling connecting pipe (308), a cavity plate inner groove (309), a main pipe shunt pipe (310), a shunt pipe inlet hole (311), and a heat dissipation elbow (312); The upper and lower surfaces of the heat dissipation cavity plate (301) are both provided with ventilation heat dissipation plates (302), the two ventilation heat dissipation plates (302) are both provided with a plurality of ventilation heat dissipation holes (303), the heat dissipation cavity plate (301) is provided with a cavity plate inner groove (309), both ends of the heat dissipation cavity plate (301) are both integrally provided with cold air pipe connecting grooves (304), and the two cold air pipe connecting grooves (304) are both provided with connecting groove inner cavities (305); Two diversion pipe inlet holes (311) are provided at the rear end of the inner groove (309) of the cavity plate, and the rear ends of the diversion pipe inlet holes (311) are fixedly connected to a main diversion pipe (310), and the middle of the main diversion pipe (310) is fixedly connected to a main pipe connecting pipe (306); A cooling direct connection pipe (307) is provided in the cold air pipe connecting grooves (304) at both ends, a cooling connecting pipe (308) is fixedly installed at the rear end of the cooling direct connection pipe (307), and a heat dissipation bent pipe (312) is provided between the front ends of the two cooling direct connection pipes (307).

5. A power distribution cabinet for reducing heat dissipation blind areas according to claim 4, characterized in that: The main pipeline connecting pipe (306) is in communication with the heat dissipation main air duct (11).

6. A power distribution cabinet for reducing heat dissipation blind areas according to claim 5, characterized in that: The cooling connecting pipe (308) is connected to a refrigeration pump in the heat dissipation main unit (6).

7. A power distribution cabinet for reducing heat dissipation blind areas according to claim 6, characterized in that: The heat dissipation bent pipe (312) is arranged in the inner groove (309) of the cavity plate.

8. A power distribution cabinet for reducing heat dissipation blind areas according to claim 7, characterized in that: The heat dissipation and exhaust assembly (5) comprises: an exhaust assembly top plate (501), an air pump upper tube (502), a corner connection block (503), an air blowing connection tube (504), an air inlet chamber shell (505), an air collecting cover (506), a guide dust shield plate (507), a one-way valve slot (508), a one-way valve mounting seat (509), an air one-way valve (510), a one-way valve sealing ring (511), and a main pipeline top pipe (512); An air pump upper tube (502) is fixedly mounted on the upper end of the air extraction component top plate (501), a corner connection block (503) is fixedly mounted on the upper end of the air pump upper tube (502), a blowing connection tube (504) is fixedly connected to the front end of the corner connection block (503), an air blowing connection tube (504) is fixedly connected to the front end of the air blowing connection tube (504), an air inlet chamber shell (505) is integrally provided with an air collecting hood (506) at the front end of the air inlet chamber shell (505), and a plurality of guide dust-shielding plates (507) are provided on the air inlet chamber shell (505) and the air collecting hood (506); A one-way valve slot (508) is provided in the air inlet chamber shell (505); a one-way valve mounting seat (509) is fixedly mounted on the upper inner wall surface of the one-way valve slot (508); an air one-way valve (510) is fixedly mounted on the lower end of the one-way valve mounting seat (509); and a main pipeline top pipe (512) is provided at the lower end of the air one-way valve (510).

9. A power distribution cabinet for reducing heat dissipation blind areas according to claim 8, characterized in that: The main pipeline top pipe (512) is fixedly connected to the top of the heat dissipation main air duct (11).

10. A power distribution cabinet for reducing heat dissipation blind areas according to claim 9, characterized in that: The lower end of the air pump upper tube (502) is fixedly connected to a fan connecting tube (513), and the lower end of the fan connecting tube (513) is fixedly connected to an air outlet of the fan.

Images