Electrical cabinet electrical component heat dissipation cooling structure

Abstract

The utility model relates to an electrical cabinet electrical component heat dissipation cooling structure belongs to electrical cabinet heat dissipation technical field. This electrical cabinet electrical component heat dissipation cooling structure, include: setting electrical cabinet top end's shell, the shell is detachable, cooling mechanism, the cooling mechanism includes setting in the air pipe of electrical cabinet top end, the surface of air pipe is wound with spiral cooling water pipe, the bottom fixedly connected with collection shell of air pipe, through setting up the circulating cooling system that the cooling liquid circulation box formed with the air pipe of cooperation its surface winding setting cooling water pipe of '' L '' shape, significantly increased the contact area and heat exchange time of airflow and cooling pipe, compared with laminated cooling pipe structure, increased the heat exchange surface area, promoted the heat dissipation efficiency to can effectively reduce the temperature in the electrical cabinet.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for electrical cabinets, and in particular to a heat dissipation and cooling structure for electrical components in an electrical cabinet. Background Technology

[0002] An electrical cabinet is a enclosure used for centralized management and protection of electrical equipment. It typically contains various electrical components such as circuit breakers, contactors, relays, and transformers. These components generate heat during operation; if heat is not effectively dissipated, it can lead to overheating, affecting the stability and lifespan of the equipment. To ensure the normal operation of the equipment within the electrical cabinet and to prevent malfunctions caused by overheating, a heat dissipation and cooling structure must be installed inside the cabinet.

[0003] As shown in the reference case "A heat dissipation and cooling structure for electrical components of an electrical cabinet" (publication number "CN222261915U"), this utility model solves the problem of excessive external air heat and uneven heat dissipation distribution, which leads to poor heat dissipation effect of some structures and reduced equipment performance. It achieves efficient and uniform heat dissipation and cooling, thereby maintaining the electrical equipment at a suitable temperature, improving its working efficiency and stability, and extending the service life of the equipment. Although the above application can achieve the effect of cooling the cabinet by using a fan to blow air into the duct and installing a cooling water pipe at the other end of the duct so that the airflow enters the cabinet after being cooled by the cooling water pipe, the cooling water pipes of the device are stacked, which may result in insufficient contact time between the airflow and the cooling water pipes, resulting in poor heat dissipation efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a heat dissipation and cooling structure for electrical components in an electrical cabinet to address the problem of poor heat dissipation efficiency.

[0005] A heat dissipation and cooling structure for electrical components of an electrical cabinet includes: a shell disposed at the top of the electrical cabinet, the shell being detachable; The cooling mechanism includes an air duct located at the top of the electrical cabinet, with a spiral cooling water pipe wound around the surface of the air duct, and a collection shell fixedly connected to the bottom end of the air duct.

[0006] In one embodiment, the duct is in the shape of an inverted "L", with the top end of the duct extending through the outer casing and the bottom end extending through the inner wall of the electrical cabinet.

[0007] In one embodiment, the surface of the air duct located inside the housing is provided with a spiral groove, and the cooling water pipe is wound around the spiral groove.

[0008] In one embodiment, an outer cylinder is fitted onto the surface of the air duct, the cooling water pipe is disposed between the air duct and the outer cylinder, the bottom of the outer cylinder is fixedly connected to the air duct, and the outer cylinder is fixedly connected to the inner top wall of the electrical cabinet.

[0009] In one embodiment, a coolant circulation tank is installed on one side of the electrical cabinet, and both ends of the cooling water pipe are connected to the inlet and outlet of the coolant circulation tank, respectively.

[0010] In one embodiment, the collecting shell is funnel-shaped, with a collecting port at the bottom and a water outlet pipe connected to the bottom end of the collecting port.

[0011] In one embodiment, the inner wall of the collecting shell is provided with a plurality of flow guide grooves, the flow guide grooves extend from the top of the collecting shell to the collecting port, and the surface of the collecting shell is provided with a plurality of ventilation grooves, the plurality of ventilation grooves and flow guide grooves being arranged in a circumferentially staggered manner.

[0012] In one embodiment, a filter screen is provided at the inlet of the duct, and a fan is embedded in the inner wall of the duct. Beneficial effects

[0013] 1. By setting up an "L"-shaped air duct, combined with cooling water pipes wrapped around its surface, and a circulating cooling system formed by a coolant circulation tank, the contact area between the airflow and the cooling pipes and the heat exchange time are significantly increased. Compared with the stacked cooling pipe structure, the heat exchange surface area is increased, the heat dissipation efficiency is improved, and the temperature inside the electrical cabinet can be effectively reduced. 2. By setting up a funnel-shaped collection shell and its internal guide channel structure, condensate generated during the cooling process can be effectively collected and discharged, preventing the electrical cabinet from becoming damp due to the cooling mechanism. The staggered arrangement of the ventilation slots and guide channels ensures smooth drainage without affecting airflow. Combined with the filter design at the duct inlet, it not only improves heat dissipation efficiency but also provides dual functions of dust and moisture prevention. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation of the collection shell of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is an exploded view of the cooling mechanism of this utility model; Figure 5 This is a schematic diagram of the overall structure of the collection shell of this utility model.

[0016] Figure label: 100. Outer shell; 200. Cooling mechanism; 210. Air duct; 211. Fan; 212. Filter screen; 220. Cooling water pipe; 221. Spiral groove; 230. Outer cylinder; 240. Coolant circulation tank; 250. Collection shell; 251. Guide groove; 252. Ventilation groove; 253. Collection port; 254. Water outlet pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is combined with Figure 1 - Figure 5 This invention describes the heat dissipation and cooling structure of the electrical components in the electrical cabinet.

[0019] In one embodiment, an electrical component heat dissipation and cooling structure for an electrical cabinet includes: a housing 100 disposed at the top of the electrical cabinet, the housing 100 being detachable; Cooling mechanism 200 includes an air duct 210 disposed at the top of the electrical cabinet, a spiral cooling water pipe 220 wound around the surface of the air duct 210, and a collection shell 250 fixedly connected to the bottom end of the air duct 210.

[0020] In this device, the bottom of the electrical cabinet is provided with an installation interface for disassembling and assembling the outer casing 100 for convenient subsequent maintenance. One side of the electrical cabinet is provided with a dedicated mounting position for installing the coolant circulation tank 240. The air duct 210 is located at the center of the electrical cabinet. Since the electrical components are usually installed on the inner walls of the electrical cabinet and on the cabinet door, the cooled gas will come into contact with all electrical components after flowing out through the air duct 210, and cool and dissipate heat from the electrical components through heat conversion.

[0021] like Figure 1 , Figure 3 and Figure 4As shown, the air duct 210 is inverted "L" shape, with its top end penetrating through the outer casing 100 and its bottom end penetrating into the inner wall of the electrical cabinet. A spiral groove 221 is provided on the surface of the air duct 210 inside the outer casing 100, and the cooling water pipe 220 is wound within the spiral groove 221. An outer cylinder 230 is fitted onto the surface of the air duct 210, and the cooling water pipe 220 is positioned between the air duct 210 and the outer cylinder 230. The bottom of the outer cylinder 230 is fixedly connected to the air duct 210, and the outer cylinder 230 is fixedly connected to the inner top wall of the electrical cabinet. A coolant circulation tank 240 is installed on one side of the electrical cabinet, and both ends of the cooling water pipe 220 are connected to the inlet and outlet of the coolant circulation tank 240, respectively.

[0022] In this embodiment, the coolant circulation tank adopts an integrated design, internally comprising a storage chamber, a circulation pump unit, a refrigeration module, and an intelligent temperature control system. The storage chamber is made of corrosion-resistant metal and filled with antifreeze coolant. The circulation pump unit drives the coolant to circulate within the system. The refrigeration module is installed at the bottom of the storage chamber and precisely regulates the coolant temperature through the temperature control system. During operation, the circulation pump delivers the low-temperature coolant through the outlet to the cooling water pipe 220 spirally wound around the outer wall of the air duct 210. As the coolant flows through the water pipe, it absorbs heat from the airflow within the air duct 210. The heated coolant returns to the circulation tank and is recooled by the refrigeration module, forming a closed-loop circulation. The copper cooling water pipe 220 is spirally wound with the outer cylinder 230 to ensure a tight fit between the cooling water pipe 220 and the outer wall of the air duct 210, which greatly increases the heat exchange area. In this device, the fan 211 and the coolant circulation tank 240 are controlled by a PLC controller. When the outside air temperature is much lower than the air temperature inside the electrical cabinet, the cooling fan can be started directly to blow the outside air into the electrical cabinet. The filter screen 212 filters the impurities from the outside to prevent them from entering the cabinet. When the outside temperature is not much different from the temperature inside the cabinet, the electrical cabinet needs to be cooled by the coolant. It should be noted that this device achieves active cooling and heat dissipation of the electrical components inside the electrical cabinet by setting a cooling mechanism 200 at the top of the electrical cabinet. At the same time, most of the cooling mechanism 200 is located outside the electrical cabinet, with the collection shell 250 located at the center of the inner top wall of the electrical cabinet. No electrical components are installed at this location. Since the water outlet pipe 254 is a flexible hose, it can pass through the cabinet between the electrical components and extend to the outside of the cabinet for drainage. Therefore, the cooling mechanism 200 of this device will not affect the normal installation of electrical components. In addition, this device only works when the electrical components inside the electrical cabinet need cooling and heat dissipation, and only through physical cooling. Therefore, this device will not interfere with the normal operation and function of the electrical cabinet.

[0023] like Figure 1 , Figure 2 and Figure 5As shown, the collection shell 250 is funnel-shaped, with a collection port 253 at its bottom, and a water outlet pipe 254 connected to the bottom end of the collection port 253. Multiple guide channels 251 are formed on the inner wall of the collection shell 250, extending from the top of the collection shell 250 to the collection port 253. Multiple ventilation slots 252 are formed on the surface of the collection shell 250, arranged in a staggered circular pattern with the guide channels 251. A filter screen 212 is installed at the inlet of the air duct 210, and a fan 211 is embedded in the inner wall of the air duct 210.

[0024] In this embodiment, since the condensate is condensed on the inner wall of the pipe, it will slide down the inner wall of the air duct 210 under the action of gravity. When the condensate slides into the collection shell 250, it will continue to flow along the guide groove 251 to the collection port 253 at the bottom of the collection shell 250, and then be discharged from the electrical cabinet under the action of gravity through the water outlet pipe 254. During this process, the airflow flows out from the air duct 210 and directly enters the cabinet through the ventilation groove 252, while spreading to the sides of the cabinet, increasing the cooling and heat dissipation effect on the electrical components.

[0025] Working principle: When the electrical cabinet needs to be cooled, the fan 211 and the coolant circulation tank 240 are manually started. The fan 211 blows air into the air duct 210, bringing outside air into the electrical cabinet. At this time, the coolant, under the action of the water pump, flows from the coolant circulation tank 240 into the top of the cooling water pipe 220, then flows along the cooling water pipe 220 wrapped around the surface of the air duct 210, and flows back into the coolant circulation tank 240 from the bottom of the cooling water pipe 220. During this process, the coolant cools the gas flowing into the air duct 210 through heat transfer. The cooled gas enters the electrical cabinet from the top, while the relatively hot gas inside the electrical cabinet is discharged from the exhaust port at the bottom of the electrical cabinet, thereby achieving the cooling effect on the electrical components. When the gas is cooled by passing through the duct 210, condensation may occur due to the rapid temperature drop and flow downward along the duct 210. At this time, the condensation will flow into the collection shell 250 along the duct 210 and flow along the guide groove 251 opened on the surface of the collection shell 250, while the airflow enters the electrical cabinet through the ventilation groove 252.

[0026] It should be noted that the coolant circulation tank 240, fan 211 and filter 212 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the coolant circulation tank 240 and fan 211 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat dissipation and cooling structure for electrical components of an electrical cabinet, characterized in that, include: An outer casing (100) is provided on the top of the electrical cabinet, and the outer casing (100) is detachable; Cooling mechanism (200) includes an air duct (210) disposed at the top of the electrical cabinet, the surface of the air duct (210) is wound with a spiral cooling water pipe (220), and a collection shell (250) is fixedly connected to the bottom end of the air duct (210). The air duct (210) has a spiral groove (221) on its surface inside the outer shell (100), and the cooling water pipe (220) is wound around the spiral groove (221); The surface of the air duct (210) is fitted with an outer cylinder (230), the cooling water pipe (220) is located between the air duct (210) and the outer cylinder (230), the bottom of the outer cylinder (230) is fixedly connected to the air duct (210), and the outer cylinder (230) is fixedly connected to the inner top wall of the electrical cabinet.

2. The heat dissipation and cooling structure for electrical components of the electrical cabinet according to claim 1, characterized in that, The air duct (210) is in the shape of an inverted "L". The top end of the air duct (210) extends through the outer shell (100) and the bottom end extends through the inner wall of the electrical cabinet.

3. The heat dissipation and cooling structure for electrical components of the electrical cabinet according to claim 1, characterized in that, A coolant circulation tank (240) is installed on one side of the electrical cabinet, and both ends of the cooling water pipe (220) are connected to the inlet and outlet of the coolant circulation tank (240), respectively.

4. The heat dissipation and cooling structure for electrical components of the electrical cabinet according to claim 1, characterized in that, The collecting shell (250) is funnel-shaped, and a collecting port (253) is provided at the bottom of the collecting shell (250). The bottom end of the collecting port (253) is connected to a water outlet pipe (254).

5. The heat dissipation and cooling structure for electrical components of the electrical cabinet according to claim 1, characterized in that, The inner wall of the collection shell (250) is provided with a plurality of flow guide grooves (251), the flow guide grooves (251) extend from the top of the collection shell (250) to the collection port (253), and the surface of the collection shell (250) is provided with a plurality of ventilation grooves (252), the plurality of ventilation grooves (252) and the flow guide grooves (251) are arranged in a circumferentially staggered manner.

6. The heat dissipation and cooling structure for electrical components of the electrical cabinet according to claim 1, characterized in that, A filter screen (212) is provided at the inlet of the air duct (210), and a fan (211) is embedded in the inner wall of the air duct (210).

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