Efficient heat dissipation power cabinet

Abstract

The utility model relates to the technical field of power cabinets, in particular to a high-efficiency heat dissipation power cabinet, which comprises a cabinet body and a base, an installation cavity is arranged in the cabinet body, the cabinet body is arranged on the upper side of the base, an installation frame is arranged in the installation cavity, and exhaust holes communicated with the installation cavity are arranged on the side wall of the cabinet body. A heat dissipation cavity is formed in the base, a cold air pipe is installed in the heat dissipation cavity, the air outlet end of the cold air pipe penetrates into the installation cavity, the air inlet end of the cold air pipe is arranged on the surface of the base, and an air inlet fan is installed in the cold air pipe; a refrigeration mechanism is installed in the heat dissipation cavity, and the cold end of the refrigeration mechanism is arranged between the air inlet fan and the air outlet end in the cold air pipe. After passing through the cold air pipe, the air exchanges heat with the cold end of the refrigeration mechanism, so that the temperature of the air entering the mounting cavity is reduced, the heat exchange efficiency can be improved by means of the large temperature difference between the cold air and the high-temperature equipment, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cabinets, in particular to a high-efficiency heat dissipation power cabinet. Background Art

[0002] The power cabinet is a distribution cabinet, which is specially used to provide power and control for power equipment (generally referring to electric motors). It can provide power for the normal operation of the whole machine. It has contactors, frequency converters, high-voltage cabinets, transformers, etc. Its function is to supply power to electrical equipment, start and stop electrical equipment, detect the operation of equipment, and protect electrical equipment.

[0003] The devices installed in the power cabinet will generate a large amount of heat when working. This heat accumulates in the power cabinet, causing the temperature inside the power cabinet to continue to rise. When the temperature exceeds a certain limit, it will cause internal components such as contactors, inverters, high-voltage cabinets, transformers, etc. to malfunction and even cause a fire.

[0004] In the prior art, in order to prevent the internal temperature of the power cabinet from being too high, a heat dissipation mechanism is usually added to reduce the temperature inside the power cabinet. These conventional heat dissipation mechanisms include fans and heat dissipation holes, which remove the heat inside the power cabinet by accelerating the air exchange rate between the inside and the outside. This method works better for power cabinets installed indoors, because the main source of heat in indoor power cabinets comes from the internal period itself. However, for power cabinets installed outdoors, it sometimes does not have a good effect, especially when the weather outdoors is hot and the sun shines directly on the power cabinet, which will cause the temperature inside the power cabinet to rise rapidly, resulting in the inability of conventional fans to cool the power cabinet. Utility Model Content

[0005] The utility model aims to provide an efficient heat dissipation power cabinet, so as to solve the problem in the prior art that outdoor power cabinets are difficult to achieve a good cooling effect when exposed to the sun by relying solely on fans to dissipate heat.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A high-efficiency heat dissipation power cabinet comprises a cabinet body, an installation cavity is arranged in the cabinet body, and also comprises a base, the cabinet body is installed on the upper side of the base, a mounting frame is arranged in the installation cavity, a contactor, a frequency converter, a high-voltage cabinet and a transformer are installed on the mounting frame, and a side wall of the cabinet body is provided with an exhaust hole connected with the installation cavity; a heat dissipation cavity is arranged in the base, a cold air duct is installed in the heat dissipation cavity, the air outlet end of the cold air duct passes through the installation cavity, the air inlet end of the cold air duct is placed on the surface of the base, and an air intake fan is installed in the cold air duct; a refrigeration mechanism is installed in the heat dissipation cavity, and the cold end of the refrigeration mechanism is arranged between the air intake fan and the air outlet end in the cold air duct.

[0008] A further technical solution is that the refrigeration mechanism includes a semiconductor refrigeration sheet and a water tank, an installation groove is provided on the water tank, the middle part of the cold air duct is installed at the position of the installation groove on the upper side of the water tank, the semiconductor refrigeration sheet is installed in the installation groove, the heating end of the semiconductor refrigeration sheet is fitted with the bottom of the installation groove, and the cold end of the semiconductor refrigeration sheet is placed in the cold air duct through the first connecting hole.

[0009] A further technical solution is that heat dissipation holes are provided through-through on opposite sides of the water tank, and a heat dissipation fan is provided on the surface of the water tank at the position of the heat dissipation holes.

[0010] A further technical solution is that a stirring motor is installed in the water tank, and a stirring blade is installed on the output shaft of the stirring motor.

[0011] A further technical solution is that the mounting frame includes a side frame, a vertical frame and a horizontal frame, the side frame is horizontally mounted on the cavity wall of the mounting cavity, the vertical frame is vertically arranged in the mounting cavity and is detachably connected to the side frame, and the horizontal frame is horizontally arranged in the mounting cavity and is detachably connected to the vertical frame.

[0012] A further technical solution is that a plurality of first mounting holes are provided on the side frame, the vertical frame is detachably connected to the first mounting holes by first screws, a plurality of second mounting holes are provided on the vertical frame, the horizontal frame is detachably connected to the second mounting holes by second screws, and a plurality of third mounting holes are provided on the horizontal frame.

[0013] A further technical solution is that the air outlet end of the cold air duct passes through the mounting plate into the mounting cavity, the mounting cavity and the heat dissipation cavity are connected through a second connecting hole, the mounting plate is installed in the mounting hole to separate the heat dissipation cavity and the mounting cavity, a fourth mounting hole is provided on the mounting plate, and the air inlet end of the cold air duct is installed in the fourth mounting hole.

[0014] A further technical solution is that the inner diameter of the cold air duct gradually decreases from the air inlet end to the air outlet end.

[0015] A further technical solution is that a maintenance opening connected to the installation cavity is provided on one side of the base, and a maintenance plate for sealing the maintenance opening is detachably installed at the position of the maintenance opening; a first air hole running through both sides is provided on the maintenance plate, and a first dustproof net is installed in the first air hole; a second air hole connected to the heat dissipation cavity is provided on the side of the base away from the maintenance opening, and a second dustproof net is installed in the second air hole.

[0016] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By arranging the air intake fan and the exhaust hole in the cold air pipe, a good heat dissipation channel can be formed in the installation cavity, so that the cold outside air can circulate, heat exchange can be carried out, and the temperature in the installation cavity can be reduced; 2. By arranging a refrigeration mechanism in the installation cavity, and placing the cold end of the refrigeration mechanism in the cold air pipe, when the air passes through the cold air pipe, it will first exchange heat with the cold end of the refrigeration mechanism, so that the temperature of the air entering the installation cavity can be reduced. In this way, the large temperature difference between the cold air and the high-temperature equipment can be used to improve the heat exchange efficiency, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of a high-efficiency heat dissipation power cabinet of the utility model.

[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of the area marked A in the middle.

[0019] Figure 3 This is a schematic diagram of the connection between a water tank and a cold air duct of a high-efficiency heat dissipation power cabinet of the utility model.

[0020] Figure 4 The utility model is a schematic cross-sectional view of a water tank and a cold air duct of a high-efficiency heat dissipation power cabinet.

[0021] Icons: 1-cabinet, 2-installation cavity, 3-base, 4-installation frame, 5-exhaust hole, 7-cold air duct, 8-intake fan, 9-cold end, 10-semiconductor refrigeration plate, 11-water tank, 12-installation slot, 13-heating end, 14-heat dissipation strip hole, 15-cooling fan, 16-stirring motor, 17-stirring blade, 18-side frame, 19-vertical frame, 20-horizontal frame, 21-first installation hole, 22-second installation hole, 23-third installation hole, 24-installation plate, 25-second connecting hole, 26-fourth installation hole, 27-inspection panel, 28-first dustproof net, 29-first rain cover, 30-wiring module, 31-second rain cover. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] Figures 1 to 4 Shown is an embodiment of the utility model.

[0024] Embodiment 1:

[0025] A high-efficiency heat dissipation power cabinet includes a cabinet body 1, a mounting cavity 2 is arranged in the cabinet body 1, and a base 3 is also included. The cabinet body 1 is installed on the upper side of the base 3, a mounting frame 4 is arranged in the mounting cavity 2, and a contactor, a frequency converter, a high-voltage cabinet and a transformer are installed on the mounting frame 4. The side wall of the cabinet body 1 is provided with an exhaust hole 5 connected to the mounting cavity 2; a heat dissipation cavity is arranged in the base 3, and a cold air pipe 7 is installed in the heat dissipation cavity. The outlet end of the cold air pipe 7 passes through the mounting cavity 2, and the inlet end of the cold air pipe 7 is placed on the surface of the base 3. An intake fan 8 is installed in the cold air pipe 7; a refrigeration mechanism is installed in the heat dissipation cavity, and the cold end 9 of the refrigeration mechanism is arranged between the intake fan 8 and the outlet end in the cold air pipe 7. By arranging the intake fan 8 in the cold air pipe and cooperating with the exhaust hole 5, a good heat dissipation channel can be formed in the mounting cavity 2, so that the cold outside air can circulate, heat exchange is performed, and the temperature in the mounting cavity 2 is reduced. By arranging a refrigeration mechanism in the installation cavity 2, and placing the cold end 9 of the refrigeration mechanism in the cold air pipe, when the air passes through the cold air pipe, it will first exchange heat with the cold end 9 of the refrigeration mechanism, so that the temperature of the air entering the installation cavity 2 is reduced, so that the heat exchange efficiency can be improved by virtue of the large temperature difference between the cold air and the high-temperature equipment, thereby improving the heat dissipation effect. An exhaust fan is installed in the exhaust hole 5, which can better cooperate with the intake fan 8 to form an air duct, and can accelerate the discharge of hot air from the installation cavity 2 after heat exchange. A first rain cover 29 is installed on the side of the cabinet 1 at the position of the exhaust hole 5, and an opening is arranged below the first rain cover 29, so that rainwater can be prevented from entering the installation cavity 2 from the position of the exhaust hole 5. In order to improve the cooling and heat insulation effect, a heat insulation interlayer is arranged between the cavity wall of the installation cavity 2 and the outer surface of the cabinet 1, so that when the outdoor sunlight is directly exposed, the temperature in the installation cavity 2 will not rise too fast due to sunlight, but only because of the temperature in the installation cavity 2.

[0026] The refrigeration mechanism includes a semiconductor refrigeration sheet 10 and a water tank 11. The water tank 11 is provided with a mounting groove 12. The middle part of the cold air pipe 7 is mounted on the upper side of the water tank 11 at the position of the mounting groove 12. The semiconductor refrigeration sheet 10 is mounted in the mounting groove 12. The heating end 13 of the semiconductor refrigeration sheet 10 fits with the bottom of the mounting groove 12. The cold end 9 of the semiconductor refrigeration sheet 10 is placed in the cold air pipe 7 through the first connecting hole. By arranging the semiconductor refrigeration sheet 10 and the water tank 11 to cooperate, a miniaturized refrigeration mechanism can be made. When the semiconductor refrigeration sheet 10 is started, the temperature of the cold end 9 of the semiconductor refrigeration sheet 10 decreases, and the temperature of the heating end 13 increases. In this way, when the air of the cold air pipe 7 passes through the cold end 9, the heat will be transferred to the cold end 9. Since the heating end 13 fits with the bottom of the mounting groove 12, heat exchange can be performed through the bottom of the mounting groove 12 and the water in the water tank 11, and the temperature of the heating end 13 is reduced by the water in the water tank 11. The water tank 11 is made of metal material, such as copper or aluminum alloy, so that the heat exchange between the heating end 13 of the semiconductor cooling sheet 10 and the water in the water tank 11 can be performed through the metal. Heat can also be dissipated through the surface of the water tank 11 to reduce the water temperature. The heating end 13 of the semiconductor cooling sheet 10 can be connected to the bottom of the mounting groove 12 through thermal grease, so that the contact area can be more uniform, thereby improving the heat exchange efficiency.

[0027] The water tank 11 is provided with heat dissipation holes 14 on opposite sides thereof, and a heat dissipation fan 15 is provided on the surface of the water tank 11 at the position of the heat dissipation holes 14. The heat dissipation holes 14 can increase the surface area of ​​the water tank 11, so that the heat dissipation fan 15 can speed up the flow rate of air passing through the surface of the water tank 11 to remove the temperature in the water tank 11. A plurality of heat dissipation holes 14 can be provided to better cooperate with the heat dissipation fan 15 to dissipate heat.

[0028] A stirring motor 16 is installed in the water tank 11, and a stirring blade 17 is installed on the output shaft of the stirring motor 16. By arranging the stirring motor 16 and the stirring blade 17, the water in the water tank 11 can flow, the water temperature in the water tank 11 can be made more uniform, and excessive local temperature rise can be avoided.

[0029] The mounting frame 4 includes a side frame 18, a vertical frame 19 and a cross frame 20. The side frame 18 is horizontally mounted on the cavity wall of the mounting cavity 2. The vertical frame 19 is vertically arranged in the mounting cavity 2 and is detachably connected to the side frame 18. The cross frame 20 is horizontally arranged in the mounting cavity 2 and is detachably connected to the vertical frame 19. With such an arrangement, the cross frame 20 can be adjusted in position in the mounting cavity 2 with the help of the cooperation between the side frame 18 and the vertical frame 19. Compared with the traditional power cabinet, the electrical equipment can only be installed on the cavity wall of the mounting cavity 2. The utility model can install the electrical equipment at any position with the help of the cross frame 20, so that when the cold air in the cold air duct 7 is blown up from the bottom of the mounting cavity 2, it can be blown from all sides of the electrical equipment, which can improve the heat dissipation effect.

[0030] The side frame 18 is provided with a plurality of first mounting holes 21, the vertical frame 19 is detachably connected to the first mounting holes 21 by a first screw, the vertical frame 19 is provided with a plurality of second mounting holes 22, the horizontal frame 20 is detachably connected to the second mounting holes 22 by a second screw, and the horizontal frame 20 is provided with a plurality of third mounting holes 23. By providing the first mounting holes 21, the installation position of the vertical frame 19 can be adjusted, by providing the second mounting holes 22, the installation position of the horizontal frame 20 on the vertical frame 19 can be adjusted, and by providing the third mounting holes 23, the installation position of the electrical equipment on the horizontal frame 20 can be conveniently adjusted. The electrical equipment includes contactors, frequency converters, high-voltage cabinets, transformers, and the like. A wiring module 30 is provided on the side of the cabinet 1, and the inner side of the wiring module 30 is inserted into the mounting cavity 2 for connecting with the electrical equipment. The cabinet 1 is provided with a second rain cover 31 at the position of the wiring module 30 to prevent the wiring module 30 from being wetted by rain.

[0031] The air outlet of the cold air pipe 7 passes through the mounting plate 24 into the mounting cavity 2, the mounting cavity 2 and the heat dissipation cavity are connected through the second connecting hole 25, the mounting plate 24 is installed in the mounting hole, and is used to separate the heat dissipation cavity and the mounting cavity 2, and the mounting plate 24 is provided with a fourth mounting hole 26, and the air inlet of the cold air pipe 7 is installed in the fourth mounting hole 26. By providing the mounting plate 24, the mounting cavity 2 and the heat dissipation cavity can be separated, and the heat transfer between the two can be reduced, and the air outlet of the cold air pipe can be well fixed through the fourth mounting hole 26.

[0032] The inner diameter of the cold air duct 7 gradually decreases from the air inlet end to the air outlet end. Such a setting can gradually increase the air flow rate in the cold air duct 7 by virtue of the gradually decreasing inner diameter, so that the flow rate of cold air entering the installation cavity 2 can be increased, and the heat exchange rate can be accelerated by virtue of the high flow rate.

[0033] A maintenance port connected to the installation cavity 2 is provided on one side of the base 3, and a maintenance plate 27 for blocking the maintenance port is detachably installed at the position of the maintenance port; a first air hole penetrating through both sides is provided on the maintenance plate 27, and a first dustproof net 28 is installed in the first air hole; a second air hole connected to the heat dissipation cavity is provided on the side of the base 3 away from the maintenance port, and a second dustproof net is installed in the second air hole. By providing the maintenance port and the maintenance plate 27, it is possible to facilitate the maintenance of the heat dissipation cavity while protecting the heat dissipation cavity. By providing the first air hole and the second air hole, the external air and the air in the heat dissipation cavity can be exchanged when the heat dissipation fan 15 dissipates heat from the water tank 11.

[0034] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A high-efficiency heat dissipation power cabinet, comprising a cabinet body (1), wherein a mounting cavity (2) is provided in the cabinet body (1), It is characterized in that It also comprises a base (3), the cabinet (1) being mounted on the upper side of the base (3), a mounting frame (4) being arranged in the mounting cavity (2), a contactor, a frequency converter, a high-voltage cabinet and a transformer being mounted on the mounting frame (4), and a side wall of the cabinet (1) being provided with an exhaust hole (5) communicating with the mounting cavity (2); A heat dissipation cavity is provided in the base (3), a cold air pipe (7) is installed in the heat dissipation cavity, an air outlet end of the cold air pipe (7) passes through the installation cavity (2), an air inlet end of the cold air pipe (7) is placed on the surface of the base (3), and an air intake fan (8) is installed in the cold air pipe (7); A refrigeration mechanism is installed in the heat dissipation cavity, and a cold end (9) of the refrigeration mechanism is built into the cold air pipe (7) between the air inlet fan (8) and the air outlet end.

2. According to the high-efficiency heat dissipation power cabinet of claim 1, Features: The refrigeration mechanism comprises a semiconductor refrigeration sheet (10) and a water tank (11); a mounting groove (12) is provided on the water tank (11); the middle portion of the cold air duct (7) is mounted on the upper side of the water tank (11) at the position of the mounting groove (12); the semiconductor refrigeration sheet (10) is mounted in the mounting groove (12); the heating end (13) of the semiconductor refrigeration sheet (10) is in contact with the bottom of the mounting groove (12); and the cold end (9) of the semiconductor refrigeration sheet (10) is placed in the cold air duct (7) through a first connecting hole.

3. According to claim 2, a high-efficiency heat dissipation power cabinet, Features: Heat dissipation holes (14) are provided through-through on opposite sides of the water tank (11), and a heat dissipation fan (15) is provided on the surface of the water tank (11) at the position of the heat dissipation holes (14).

4. According to claim 3, a high-efficiency heat dissipation power cabinet, Features: A stirring motor (16) is installed in the water tank (11), and a stirring blade (17) is installed on the output shaft of the stirring motor (16).

5. According to the high-efficiency heat dissipation power cabinet of claim 1, Features: The mounting frame (4) comprises a side frame (18), a vertical frame (19) and a horizontal frame (20); the side frame (18) is horizontally mounted on a cavity wall of the mounting cavity (2); the vertical frame (19) is vertically arranged in the mounting cavity (2) and is detachably connected to the side frame (18); and the horizontal frame (20) is horizontally arranged in the mounting cavity (2) and is detachably connected to the vertical frame (19).

6. According to claim 5, a high-efficiency heat dissipation power cabinet, Features: The side frame (18) is provided with a plurality of first mounting holes (21), the vertical frame (19) is detachably connected to the first mounting holes (21) via first screws, the vertical frame (19) is provided with a plurality of second mounting holes (22), the horizontal frame (20) is detachably connected to the second mounting holes (22) via second screws, and the horizontal frame (20) is provided with a plurality of third mounting holes (23).

7. The high-efficiency heat dissipation power cabinet according to claim 1, Features: The air outlet end of the cold air duct (7) passes through the mounting plate (24) into the mounting cavity (2); the mounting cavity (2) and the heat dissipation cavity are connected via a second connecting hole (25); the mounting plate (24) is mounted in the second connecting hole (25) to separate the heat dissipation cavity and the mounting cavity (2); a fourth mounting hole (26) is provided on the mounting plate (24); the air inlet end of the cold air duct (7) is mounted in the fourth mounting hole (26).

8. The high-efficiency heat dissipation power cabinet according to claim 1, Features: The inner diameter of the cold air pipe (7) gradually decreases from the air inlet end to the air outlet end.

9. The high-efficiency heat dissipation power cabinet according to claim 1, Features: A maintenance opening in communication with the installation cavity (2) is provided on one side of the base (3); a maintenance plate (27) for sealing the maintenance opening is detachably mounted on the base (3) at the position of the maintenance opening; The inspection plate (27) is provided with a first air vent extending through both sides, and a first dustproof net (28) is installed in the first air vent; a second air vent connected to the heat dissipation cavity is provided on a side of the base (3) away from the inspection opening, and a second dustproof net is installed in the second air vent.

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