Heat dissipation type electrical control cabinet

Abstract

The application discloses a heat dissipation type electrical control cabinet, wherein a condenser for heat dissipation is arranged on the back of the electrical control cabinet body, and an evaporator for heat absorption is arranged in the electrical control cabinet body; the evaporator comprises two heat exchange units, each heat exchange unit comprises an aluminum fin heat sink and an evaporation heat exchange pipe, and a fan is arranged at the upper end and the lower end of the heat exchange unit or at any end of the heat exchange unit; the aluminum fin heat sink comprises a plurality of heat exchange fins arranged in parallel and a condensation liquid drop reducing bin arranged at the back of the heat exchange fins, a condensation liquid drop guiding structure is arranged on the heat exchange fins, and the condensation liquid drop guiding structure is used for guiding and converging the liquid drops condensed on the surface of the heat exchange fins into the condensation liquid drop reducing bin. The fans at the two ends of the heat exchange fins can accelerate the internal air flow, the air cooling forms condensate water which is attached to the heat exchange fins, the condensate water is guided by the guide plate to avoid the danger of entering the electrical equipment, the guide plate guides the condensate water to the condensation liquid drop reducing bin and finally into the water collecting tank, and water can be conveniently discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical control cabinet, and particularly relates to a heat dissipation type electrical control cabinet. BACKGROUND

[0002] The electrical control cabinet is a cabinet made of steel for protecting components and devices to work normally. The manufacturing materials of the electrical cabinet are generally divided into hot-rolled steel plate and cold-rolled steel plate. The cold-rolled steel plate is softer than the hot-rolled steel plate, and is more suitable for the manufacturing of the electrical cabinet. The electrical cabinet is widely used in chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, and transportation industry.

[0003] The traditional electrical control cabinet adopts the air cooling windowing mode for heat dissipation. However, when the air entering the electrical control cabinet has poor heat dissipation efficiency in a high-temperature environment, the heat dissipation is insufficient, which easily causes the problem of overheating in the electrical control cabinet. The windowing heat dissipation also brings in dust, which causes dust collection in the electrical control cabinet, and the dust collection easily causes the problem of short circuit of the circuit board and the pins of the electronic components.

[0004] Therefore, the electrical control cabinet with a condenser and an evaporator is designed, and the external air is prevented from entering by using the internal circulation air. The condensate water is generated in the evaporator in the electrical control cabinet during the refrigeration process. If the water enters the electrical equipment, the equipment is damaged. Therefore, the condensation problem in the electrical control cabinet is very important. In view of this, it is necessary to improve the structure of the existing electrical control cabinet to improve the adverse effects of the condensate water on the electrical control cabinet and improve the service life of the cabinet. SUMMARY

[0005] The present application aims at solving the above technical problems, and provides a heat dissipation type electrical control cabinet.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: a heat dissipation type electrical control cabinet, comprising an electrical control cabinet body, and a cabinet door installed on the front side of the electrical control cabinet body, a condenser for heat dissipation is installed on the back of the electrical control cabinet body, and an evaporator for heat absorption is installed in the electrical control cabinet body.

[0007] The evaporator comprises two heat exchange units fixed in the electrical control cabinet body, the heat exchange unit comprises an aluminum fin heat sink and an evaporative heat exchange pipe, the two ends of the evaporative heat exchange pipe are connected with the liquid outlet end and the air inlet end of the condenser respectively, and the upper end and the lower end or any end of the heat exchange unit is provided with a fan.

[0008] The aluminum fin heat sink comprises a plurality of heat exchange fins arranged in parallel and a condensation liquid drop collection bin arranged at the back of the heat exchange fins, wherein the heat exchange fins are provided with condensation liquid drop guiding structures for guiding and converging the liquid drops condensed on the surface of the heat exchange fins into the condensation liquid drop collection bin.

[0009] Further, the condensation liquid drop guiding structures are arranged on the two side surfaces of the heat exchange fins, and the condensation liquid drop guiding structures comprise guiding plates which are arranged in a plurality of uniform distribution along the length direction of the heat exchange fins, and the guiding plates are arranged in an inclined manner to form a guiding angle with the length direction of the heat exchange fins, and the low end of the guiding plate is close to the condensation liquid drop collection bin, and the guiding plate protrudes from the surface of the heat exchange fin to form a wing surface for guiding the condensation liquid drop into the condensation liquid drop collection bin.

[0010] Further, the condensation liquid drop guiding structure further comprises a guiding rib, which is located on the upper side of the guiding plate, and the guiding rib is a bundle of ribs protruding from the surface of the heat exchange fin, and the bundle of ribs in the guiding rib is distributed in a diverging manner from bottom to top; and the lower end of the plurality of ribs in the guiding rib is located within the guiding range of the guiding plate, and the upper end of the plurality of ribs diverges to cover the width of the heat exchange fin.

[0011] Further, the condensation liquid drop collection bin is a hollow tube arranged in a longitudinal direction, and the side close to the plurality of heat exchange fins is a flat bottom surface, and a long strip-shaped through hole is arranged on the flat bottom surface corresponding to the position of the guiding plate, the lower end of the guiding plate is connected to the lower end of the through hole, and the width of the guiding plate is not less than the width of the through hole.

[0012] Further, the upper edge of the through hole is provided with an inward folding edge for guiding the condensation liquid drop, and the wing surfaces on both sides of the guiding plate are arranged in a V-shaped angle.

[0013] Further, the electrical control cabinet body comprises an outer shell and an inner shell, the inner shell is arranged inside the outer shell, the inner bottom of the electrical control cabinet body is provided with a water collecting tank, the bottom of the condensation liquid drop collection bin is communicated with the water collecting tank, and the bottom of the water collecting tank is provided with a drain hole.

[0014] Further, the outer shell and the inner shell are further provided with a heat insulation asbestos board for heat insulation, and the outer shell and the inner shell are further provided with a ceramic support strip for support, and the ceramic support strip is located between the adjacent two heat insulation asbestos boards.

[0015] Further, the side surface of the fan is provided with an air inlet window for air inlet; and the fan mounted at the end of the aluminum fin heat sink is provided with three.

[0016] Further, the upper end and the lower end of the condenser are close to the surface with the air inlet, and a filter rack is arranged on the surface, and a magnetic air filter is inserted into the filter rack.

[0017] A manufacturing method of an aluminum fin heat sink comprises the following steps:

[0018] (a) heat exchange fins, evenly spaced concave or welded on the long aluminum sheet to form a flow guide rib, and the flow guide plate is punched on the lower side of the flow guide rib, the angle of the flow guide plate is the flow guide angle, and the opening side of the flow guide plate is directed to the condensation liquid drop tank;

[0019] (b) condensation liquid drop tank, H-shaped die is punched on the aluminum plate base material to form a bending gap, the lower side of the punched gap forms a flow guide plate, and the upper side forms an inward folding edge, the flow guide plate is bent to one side according to the flow guide angle, and the inward folding edge is bent to the other side, and the aluminum plate base material is bent to one side along the inward folding edge and welded at the joint to form the condensation liquid drop tank;

[0020] (c) the flow guide plate is bent to be V-shaped along the length direction at the center line position;

[0021] (d) assembly, the opening of the heat exchange fin is directed to the flow guide plate, the bottom edge of the V-shaped flow guide plate is inserted into the opening along the direction of the opening, and the side surface of the heat exchange fin is attached to the flat bottom surface;

[0022] (e) a plurality of heat exchange fins are sequentially installed to form an aluminum fin heat sink.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] 1. The condenser installed in the main body of the electrical control cabinet can liquefy the gas in the evaporation heat exchange pipe through the compressor in the condenser, and the refrigerant is liquefied and releases heat. When the refrigerant liquid enters the evaporation heat exchange pipe, the pressure is reduced, so that the refrigerant liquid vaporizes and absorbs heat in the evaporation heat exchange pipe, thereby cooling the main body of the electrical control cabinet through the aluminum plate fins. One of the aluminum plate fins is installed with a fan at the lower end, and the other aluminum plate fin is installed with a fan at the upper end, so that the air in the main body of the electrical control cabinet circulates under the action of the fan, realizes the contact between the air and the aluminum plate fins, and achieves the purpose of heat dissipation of the main body of the electrical control cabinet, avoiding overheating of the main body of the electrical control cabinet.

[0025] 2. The aluminum fin heat sink is composed of heat exchange fins and condensation liquid drop tank. The fans at both ends of the heat exchange fins can accelerate the flow of internal air, thereby reducing the temperature inside the electrical control cabinet. The condensed water formed during air cooling is attached to the heat exchange fins, and is gathered on the flow guide plate through the flow guide rib. The flow guide plate guides the condensed water to the condensation liquid drop tank and finally into the water collecting tank, facilitating water discharge.

[0026] 3、 by the outer shell, inner shell, heat insulation asbestos board and ceramic support strip consisting of electrical control cabinet body, while the inner shell is located in the inner shell of the outer shell, and the heat insulation asbestos board is arranged between the outer shell and the inner shell for heat insulation, so that the electrical control cabinet body has the characteristics of heat insulation, and the ceramic support strip is arranged between the outer shell and the inner shell for supporting, improving the stability of the structure of the electrical control cabinet body.

[0027] 4、 by the filter cotton board, pull handle consisting of air filter screen, and the filter cotton board is clamped in the inner filter screen frame, which increases the stability of the air filter screen installed in the condenser air inlet, and achieves the convenience of disassembly of the air filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front view structural diagram of the heat dissipation type electrical control cabinet of the application;

[0029] Figure 2 It is a rear view structural diagram of the heat dissipation type electrical control cabinet of the application;

[0030] Figure 3 It is a schematic diagram of the internal structure of the heat dissipation type electrical control cabinet of the application;

[0031] Figure 4 It is a structural diagram of the evaporator in the application;

[0032] Figure 5 It is a longitudinal sectional view of the heat dissipation type electrical control cabinet of the application;

[0033] Figure 6 It is a perspective view of the aluminum fin heat sink in the application;

[0034] Figure 7 It is a longitudinal sectional view of the heat exchange fin and the guide plate;

[0035] Figure 8 It is an exploded view of the aluminum fin heat sink in the application;

[0036] In the figure: 1, electrical control cabinet body; 2, cabinet door; 3, condenser; 4, evaporator; 5, aluminum fin heat sink; 6, evaporative heat exchange pipe; 7, fan; 8, heat exchange fin; 9, condensate liquid drop bin; 10, guide plate; 11, guide angle; 12, side wing surface; 13, drainage rib; 14, flat bottom surface; 15, through hole; 16, inward folding edge; 17, outer shell; 18, inner shell; 19, water collecting tank; 20, drain hole; 21, heat insulation asbestos board; 22, ceramic support strip; 23, air inlet window; 24, filter screen frame; 25, air filter screen; 26, socket. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] A type of heat-dissipating electrical control cabinet, such as Figures 1-4 As shown, it includes an electrical control cabinet body 1 and a cabinet door 2 installed on the front side of the electrical control cabinet body 1. A condenser 3 for heat dissipation is installed on the back of the electrical control cabinet body 1, and an evaporator 4 for heat absorption is installed inside the electrical control cabinet body 1.

[0039] The evaporator 4 includes two heat exchange units fixed inside the electrical control cabinet body 1. Each heat exchange unit includes an aluminum finned heat sink 5 and an evaporative heat exchange tube 6. The two ends of the evaporative heat exchange tube 6 are connected to the liquid outlet and air inlet of the condenser 3, respectively. A fan 7 is installed at either the upper or lower end of the heat exchange unit. An air inlet window 23 is provided on the side surface of the fan 7 for air intake. Three fans 7 are installed at the ends of the aluminum finned heat sink 5. Specifically, the evaporator 4 includes two heat exchange units fixed inside the electrical control cabinet body 1. A fan 7 is installed at either the upper or lower end of each heat exchange unit, and an air inlet window 23 is provided on the side surface of the fan 7 for air intake. The fan 7 circulates the air inside the electrical control cabinet and exchanges heat with the heat exchange units, thereby lowering the temperature inside the control cabinet. During this process, no air exchange occurs with the outside environment, so external dust does not enter the interior.

[0040] The condenser 3 installed inside the main body 1 of the electrical control cabinet facilitates the liquefaction of the gas inside the evaporation heat exchange tube 6 by the compressor inside the condenser 3. The refrigerant releases heat after liquefaction. At the same time, the refrigerant liquid inside the condenser 3 enters the evaporation heat exchange tube 6. Due to the pressure reduction, the refrigerant liquid vaporizes and absorbs heat inside the evaporation heat exchange tube 6. This causes the aluminum fin heat sink 5 to cool the inside of the main body 1 of the electrical control cabinet. Each aluminum fin heat sink 5 is equipped with a fan 7, which causes the air inside the main body 1 of the electrical control cabinet to circulate under the action of the fan 7. This achieves the purpose of heat dissipation by contacting the air with the aluminum fins, thus preventing the inside of the main body 1 of the electrical control cabinet from overheating.

[0041] like Figure 5As shown, the aluminum fin heat sink 5 includes a plurality of heat exchange fins 8 arranged in parallel and a condensation liquid drop collection bin 9 arranged at the back of the heat exchange fins 8, the heat exchange fins 8 are provided with condensation liquid drop guiding structures for guiding and collecting the condensation liquid drops on the surface of the heat exchange fins 8 into the condensation liquid drop collection bin 9. The electrical control cabinet body 1 includes an outer shell 17 and an inner shell 18, the inner shell 18 is arranged inside the outer shell 17, the inner bottom of the electrical control cabinet body 1 is provided with a water collecting groove 19, the bottom of the condensation liquid drop collection bin 9 is communicated with the water collecting groove 19, and the bottom of the water collecting groove 19 is provided with a drain hole 20. In use, the condensation liquid drop guiding structures guide the condensation liquid drops into the condensation liquid drop collection bin 9, and then the condensation liquid drops can fall into the water collecting groove 19 under the action of gravity. Since the water collecting groove 19 is isolated from the electrical equipment installed in the inner shell 18, the condensation liquid drops cannot enter the electrical equipment to cause damage.

[0042] Specifically, the condensation liquid drop guiding structures are arranged on the surfaces of the two sides of the heat exchange fins 8, and the condensation liquid drop guiding structures include guiding plates 10, a plurality of the guiding plates 10 are arranged and distributed uniformly along the length direction of the heat exchange fins 8, and the guiding plates 10 are arranged in an inclined manner so as to form a guiding angle 11 with the length direction of the heat exchange fins 8. When the fan 7 blows air upward from the bottom, the air can be guided on the lower side of the guiding plate 10 with the guiding angle 11 when the air passes through the guiding plate 10, so that part of the air is guided to blow on the electrical equipment installed in the inner shell 18, so that the electrical equipment can be cooled more easily. Secondly, the guiding plates 10 protrude from the surface of the heat exchange fins 8 to form side surfaces 12 for guiding the condensation liquid drops into the condensation liquid drop collection bin 9, and as shown in Figure 7 As shown, the side surfaces 12 on the two sides of the guiding plate 10 are arranged in a V-shaped angle. In this way, part of the air blown upward from the lower side is guided by the side surfaces 12, so that the air forms an S-shaped curve of repeated flow folding between the two heat exchange fins 8, thereby avoiding the air blowing the condensation liquid drops collected on the upper side of the guiding plate 10 into the interior. Figure 6 As shown, the low end of the guiding plate 10 is close to the condensation liquid drop collection bin 9, but when the condensation liquid drops fall on the upper side of the guiding plate 10, the condensation liquid drops can enter the condensation liquid drop collection bin 9 on the other side through the guiding of the guiding plate 10.

[0043] As shown, in use, the fans 7 at both ends blow air into the air from the end of the heat exchange fins 8 to make the air flow. During the heat exchange process, the water vapor in the air condenses on the heat exchange fins 8 and continuously flows downward and collects. If the condensed liquid is not guided and collected, the condensed liquid (condensation) will eventually enter the fan 7 at the bottom, which is easy to damage. In the embodiment, a plurality of guiding plates 10 are arranged on the heat exchange fins 8,

[0044] Further, as shown in Figure 6As shown, the condensation drainage structure further comprises drainage ribs 13 located on the upper side of the flow guide plate 10, the drainage ribs 13 are a bundle of ribs protruding from the surface of the heat exchange fins 8 and arranged longitudinally, the rib bundle in the drainage ribs 13 is distributed in a diverging manner from bottom to top; and the lower ends of the plurality of ribs in the drainage ribs 13 are all located within the flow guiding range of the flow guide plate 10, and the upper ends of the plurality of ribs diverge and cover the width of the heat exchange fins 8. The drainage ribs 13 are used to guide the water droplets formed on the surface of the heat exchange fins 8, and the plurality of longitudinally arranged ribs form a drainage groove for the condensation to fall onto the flow guide plate 10, effectively avoiding the horizontal airflow from blowing the water droplets into the electrical equipment.

[0045] As shown in Figure 5 , 6 As shown, the condensation drainage structure further comprises drainage ribs 13 located on the upper side of the flow guide plate 10, the drainage ribs 13 are a bundle of ribs protruding from the surface of the heat exchange fins 8 and arranged longitudinally, the rib bundle in the drainage ribs 13 is distributed in a diverging manner from bottom to top; and the lower ends of the plurality of ribs in the drainage ribs 13 are all located within the flow guiding range of the flow guide plate 10, and the upper ends of the plurality of ribs diverge and cover the width of the heat exchange fins 8. The drainage ribs 13 are used to guide the water droplets formed on the surface of the heat exchange fins 8, and the plurality of longitudinally arranged ribs form a drainage groove for the condensation to fall onto the flow guide plate 10, effectively avoiding the horizontal airflow from blowing the water droplets into the electrical equipment.

[0046] The outer shell 17 and the inner shell 18 are further provided with a heat insulation asbestos board 21 for heat insulation, and a ceramic support strip for support is arranged between the outer shell 17 and the inner shell 18. Specifically, the ceramic support strip is a strip-shaped structure of a double-curved surface. The electrical control cabinet body 1 is composed of the outer shell 17, the inner shell 18, the heat insulation asbestos board 21 and the ceramic support strip, and the inner shell 18 is located inside the outer shell 17. The heat insulation asbestos board 21 is arranged between the outer shell 17 and the inner shell 18 for heat insulation, so that the electrical control cabinet body 1 has the characteristics of heat insulation and heat preservation. The ceramic support strip is arranged between the outer shell 17 and the inner shell 18 for support, thereby improving the stability of the structure of the electrical control cabinet body 1.

[0047] The upper end and the lower end of the condenser 3 are close to the surface of the air inlet, and the filter frame 24 is inserted with the magnetic air filter 25 for heat dissipation. Specifically, the air filter 25 includes a filter cotton plate, a magnetic plate bonded at the end of the filter cotton plate, a pull handle fixed on the surface of the magnetic plate, and the magnetic plate is attracted to the filter frame 24. The filter frame 24 is an L-shaped iron plate, and the filter cotton plate is clamped in the inside of the filter frame 24. Through the air filter 25 composed of the filter cotton plate, the magnetic plate and the pull handle, the filter cotton plate is clamped in the inside of the filter frame 24, the magnetic plate is attracted to the filter frame 24, and the stability of the air filter 25 installed in the air inlet of the condenser 3 is increased. The pull handle bonded on the surface of the magnetic plate facilitates the plugging of the air filter 25 through the pull handle, and the convenience of disassembly of the air filter 25 is achieved.

[0048] A manufacturing method of an aluminum fin heat sink 5, as shown in Figure 6 、 7 , 8, comprising the following steps:

[0049] (a) The heat exchange fin 8 is uniformly and interval pressed concave or welded to form the flow guide rib 13 on the long strip aluminum sheet. In actual use, the processing form of the flow guide rib 13 is not limited, only the flow guide groove protruding vertically on the surface is needed, and preferably the flow guide rib 13 is arranged in a diverging shape at the upper part. The flow guide plate 10 is punched to form the socket 26 at the lower side of the flow guide rib 13, and the angle of the socket 26 is the flow guide angle 11, so that the opening side of the socket 26 faces the condensation liquid drop warehouse 9. In the subsequent assembly, the flow guide plate 10 is inserted to complete the assembly;

[0050] (b) The condensation liquid drop warehouse 9 is punched out by using the H-shaped die to form the bending gap on the aluminum plate base material. The flow guide plate 10 is formed at the lower side of the punched gap, and the inner folding edge 16 is formed at the upper side. The flow guide plate 10 is bent to one side according to the flow guide angle 11, and the inner folding edge 16 is bent to the other side. The aluminum plate base material is folded inward along one side of the inner folding edge 16 and welded to form the condensation liquid drop warehouse 9. In this processing step, the flat aluminum plate is used as the base material. After the H-shaped gap is punched out in an array distribution, the flow guide plate 10 at the lower side and the inner folding edge 16 at the upper side are formed by the punched gap. After the two are bent, the structure as shown in Figure 8 is formed;

[0051] (c) The flow guide plate 10 is bent to be V-shaped along the center line of the length direction, as shown in Figure 7 . The lower side of the flow guide plate 10 can effectively guide the gas, and the upper side is used for guiding the liquid;

[0052] (d) assembly, the socket 26 of the heat exchange fin 8 is directed to the guide plate 10, the bottom edge of the V-shaped guide plate 10 is inserted into the socket 26 in the direction of the socket 26, so that the side of the heat exchange fin 8 is attached to the flat bottom surface 14;

[0053] (e) sequentially installing a plurality of heat exchange fins 8 to form the aluminum fin heat sink 5.

[0054] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A heat-dissipating electrical control cabinet, comprising an electrical control cabinet body (1), and a cabinet door (2) installed on the front side of the electrical control cabinet body (1), characterized in that: The back of the electrical control cabinet body (1) is provided with a condenser (3) for heat dissipation, and the inside of the electrical control cabinet body (1) is provided with an evaporator (4) for heat absorption; The evaporator (4) comprises two heat exchange units fixed inside the electrical control cabinet body (1), the heat exchange unit comprises an aluminum fin heat sink (5) and an evaporation heat exchange pipe (6), and the two ends of the evaporation heat exchange pipe (6) are connected with the liquid outlet end and the air inlet end of the condenser (3) respectively, and the upper and lower ends or any end of the heat exchange unit is provided with a fan (7); The aluminum fin heat sink (5) comprises a plurality of heat exchange fins (8) arranged in parallel and a condensation liquid drop falling bin (9) arranged on the back of the heat exchange fin (8), and the heat exchange fin (8) is provided with a condensation liquid drop guiding structure for guiding and converging the condensation liquid drops on the surface of the heat exchange fin (8) into the condensation liquid drop falling bin (9). The manufacturing method of the aluminum fin heat sink (5) comprises the following steps: (a) The heat exchange fin (8) is formed by uniformly and interval pressing concave or welding on the long aluminum sheet to form a drainage rib (13), and the drainage rib (13) is punched to form a socket (26) of the flow guide plate (10) on the lower side of the drainage rib (13), the angle of the socket (26) is the flow guide angle (11), and the opening side of the socket (26) faces the condensation liquid drop falling bin (9); (b) The condensation liquid drop falling bin (9) is punched by using an H-shaped die to form a bending gap on the aluminum plate base material, the lower side of the punched gap forms the flow guide plate (10), and the upper side forms an inward folding edge (16), the flow guide plate (10) is bent to one side according to the flow guide angle (11), and the inward folding edge (16) is bent to the other side, and the two sides of the aluminum plate base material are bent to the inward folding edge (16) on one side and welded to form the condensation liquid drop falling bin (9); (c) The flow guide plate (10) is bent to form a V shape along the center line of the length direction; (d) The socket (26) of the heat exchange fin (8) faces the flow guide plate (10), the bottom edge of the V-shaped flow guide plate (10) is inserted into the socket (26) along the direction of the socket (26), and the side surface of the heat exchange fin (8) is attached to the flat bottom surface (14); (e) A plurality of heat exchange fins (8) are sequentially installed to form the aluminum fin heat sink (5).

2. The heat dissipating electrical control cabinet according to claim 1, wherein, The condensation liquid drop guiding structure is arranged on the two side surfaces of the heat exchange fin (8), the condensation liquid drop guiding structure comprises a flow guide plate (10), a plurality of flow guide plates (10) are arranged and distributed along the length direction of the heat exchange fin (8), the flow guide plate (10) is arranged in an inclined manner to form a flow guide angle (11) with the length direction of the heat exchange fin (8), the low end of the flow guide plate (10) is close to the condensation liquid drop falling bin (9), and the flow guide plate (10) protrudes from the surface of the heat exchange fin (8) to form a wing surface (12) for guiding the condensation liquid drop into the condensation liquid drop falling bin (9).

3. The heat dissipating electrical control cabinet of claim 2, wherein, The condensation drainage structure further comprises drainage ribs (13) located on the upper side of the flow guide plate (10), the drainage ribs (13) are a bundle of ribs protruding from the surface of the heat exchange fins (8) and arranged longitudinally, the bundle of ribs in the drainage ribs (13) is distributed in a diverging manner from bottom to top, and the lower ends of the plurality of ribs in the drainage ribs (13) are located within the flow guiding range of the flow guide plate (10), and the upper ends of the plurality of ribs diverge and cover the width of the heat exchange fins (8).

4. The heat dissipating electrical control cabinet according to claim 2 or 3, characterized in that, The condensation liquid lowering bin (9) is a longitudinally arranged hollow pipe, the side close to the plurality of heat exchange fins (8) of the condensation liquid lowering bin (9) is a flat bottom surface (14), the flat bottom surface (14) is provided with a long strip-shaped through hole (15) at a position corresponding to the flow guide plate (10), the lower end of the flow guide plate (10) is connected to the lower end of the through hole (15), and the width of the flow guide plate (10) is not less than the width of the through hole (15).

5. The heat dissipating electrical control cabinet of claim 4, wherein, An inner turning edge (16) is arranged on the upper edge of the through hole (15), the inner turning edge (16) is used for guiding the condensation liquid, and the side wing surfaces (12) on both sides of the flow guide plate (10) are arranged in a V-shaped angle.

6. The heat dissipating electrical control cabinet of claim 1, wherein, The electrical control cabinet body (1) comprises an outer shell (17) and an inner shell (18), the inner shell (18) is arranged in the inner part of the outer shell (17), the inner bottom of the electrical control cabinet body (1) is provided with a water collecting groove (19), the bottom of the condensation liquid lowering bin (9) is connected to the water collecting groove (19), and the bottom of the water collecting groove (19) is provided with a drain hole (20).

7. The heat dissipating electrical control cabinet of claim 6, wherein, Heat insulation asbestos boards (21) are further arranged between the outer shell (17) and the inner shell (18) for heat insulation, and ceramic support strips (22) are arranged between adjacent two heat insulation asbestos boards (21) for support.

8. The heat dissipating electrical control cabinet of claim 1, wherein, An air inlet window (23) for air inlet is arranged on the side surface of the fan (7), and the fan (7) mounted at the end of the aluminum fin heat sink (5) is provided with three.

9. The heat dissipating electrical control cabinet of claim 1, wherein, The upper end and the lower end of the condenser (3) are close to the surface provided with the air inlet, and a filter screen rack (24) is arranged thereon, and a magnetic air filter screen (25) for heat dissipation is inserted into the filter screen rack (24).

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