Cabinet electrical element heat dissipation structure and electrical cabinet with water and electricity separated

Abstract

The utility model discloses a cabinet electrical element heat radiation structure and a water and electricity separated electrical cabinet, a cabinet body of the cabinet is provided with a first area and a second area which are separated by a first separator plate, and the first area is in a closed state; the first area is provided with a heat conduction piece, and the electrical element needing heat dissipation is attached to the heat conduction piece. The second area is provided with a radiator for radiating heat through circular flow of a cooling medium; the heat conduction piece extends towards the second area and penetrates through the first partition plate, and the part, extending to the second area, of the heat conduction piece extends into the cooling medium of the radiator. The heat dissipation structure can solve the problem that normal use of electrical elements in the cabinet is affected by liquid leakage when a liquid cooling radiator is adopted.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage prevention of cabinets, and particularly relates to a heat dissipation structure for electrical components in a cabinet and an electrical cabinet with separation of water and electricity. Background Art

[0002] Conventional electrical cabinets generally have multiple fans installed inside the cabinet for forced air cooling. Air cooling has problems such as high energy consumption, high noise, and low cooling efficiency. With the development of technology, it has become possible to set up a liquid cooling system in an electrical cabinet. The liquid cooling technology uses a liquid heat transfer medium with higher cooling efficiency, such as water, oil, or ethylene glycol, etc. for heat exchange. Specifically, according to the type of electrical components that need to be cooled, a corresponding liquid cooling component will be designed. This liquid cooling component can include a radiator that exchanges heat with the electrical components, a heat exchanger for exchanging heat with the external environment, and a liquid cooling pipeline connecting the heat exchanger and the radiator. The radiator is internally provided with a cooling medium flow channel. The liquid cooling pipeline transports the cooling medium with a lower temperature from the heat exchanger to the flow channel inside the radiator, and then transports the cooling medium with a higher temperature inside the radiator to the heat exchanger. However, in actual applications, in order to facilitate the installation of the radiator and the liquid cooling pipeline, generally, the radiator is first installed inside the electrical cabinet, and then the liquid cooling pipeline is connected to the radiator through a quick connector. After the quick connector is used for a period of time, it is prone to leakage, affecting the normal use of the electrical components inside the cabinet. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background art, and provide a heat dissipation structure for electrical components in a cabinet and an electrical cabinet with separation of water and electricity. This heat dissipation structure can improve the problem that the normal use of electrical components in the cabinet is affected by liquid leakage when using a liquid cooling radiator.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Technical Solution 1: A heat dissipation structure for electrical components in a cabinet. The cabinet body of the cabinet is provided with a first area and a second area separated by a first partition. The first area is in a closed state. The first area is provided with a heat conducting member, and the electrical components that need to be cooled are attached to the heat conducting member. The second area is provided with a radiator that dissipates heat through the circulating flow of a cooling medium. The heat conducting member extends towards the second area and penetrates through the first partition, and the part extending into the second area extends into the cooling medium of the radiator.

[0006] Based on Technical Solution 1, Technical Solution 2: The first area is provided with a mounting base, and the heat conducting member and the electrical components are fixedly installed on the mounting base.

[0007] Technical solution three based on technical solution two: A plurality of the heat conducting members and the electrical components are provided in a mutually separated manner, and each heat conducting member corresponds to each electrical component one by one.

[0008] Technical solution four based on technical solution three: The electrical components are installed on the installation surface of the installation base; the heat conducting members are embedded in the installation surface of the installation base and are flush with the installation surface.

[0009] Technical solution five based on any one of technical solutions one to four: The connection between the heat conducting member and the radiator is sealed; the cooling medium in the radiator dissipates heat through gas-liquid phase change, the liquid phase of the cooling medium is located below the gas phase, and the heat conducting member extends into the liquid phase.

[0010] Technical solution six based on technical solution five: The heat conducting member is a heat pipe with a phase change heat transfer medium inside and is airtight.

[0011] Technical solution seven based on technical solution six: The connection between the heat conducting member and the radiator is sealed by means of low-temperature welding, screw fastening or rubber ring fitting.

[0012] Technical solution eight based on technical solution six: The heat conducting member extends into the radiator from the top.

[0013] Technical solution nine based on technical solution eight: The cabinet body is provided with a third area separated from the second area by a second partition board, and the first area and the second area are in a closed state; the third area is provided with a heat exchanger, which is communicated with the radiator through a conveying pipe for conveying a cooling medium, and the conveying pipe penetrates through the second partition board.

[0014] In addition, the present invention also provides technical solution ten: A water and electricity separated electrical cabinet, which adopts the cabinet electrical component heat dissipation structure as described in any one of technical solutions one to nine to prevent external liquid from leaking into the first area of the cabinet body.

[0015] As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects:

[0016] Technical solution one provides a heat dissipation structure for electrical components in a cabinet. The cabinet body of the cabinet is partitioned into a first area and a second area by a first partition. The first area is in a closed state and can accommodate electrical components that need to be cooled. In practical applications, the first area can be designed as a chamber with a higher protection level, such as an IP65 protection chamber. Due to the existence of the first partition, rainwater from the outside is difficult to enter the first area. A heat conducting member is arranged in the first area, and the electrical components that need to be cooled are attached to the heat conducting member. The heat generated when the electrical components work will be transferred to the heat conducting member. The second area can be a sealed chamber or an exposed part of the cabinet body, and it can place devices with lower protection level requirements. A radiator is arranged in the second area, and the radiator dissipates heat through the circulating flow of a cooling medium. Therefore, the radiator needs to receive external cooling medium and send out the heated cooling medium. In the conventional way of connecting water circuits using quick connectors, it is very easy to cause liquid leakage in the radiator due to problems such as aging of the quick connectors after long-term use. In this technical solution, after the radiator is arranged in the second area, even if liquid leakage occurs in the radiator, since there is a first partition between the first area and the second area, the liquid leakage will not affect the electrical components in the first area. However, if the radiator is arranged in the second area while the electrical components are arranged in the first area, then the heat dissipation of the electrical components will become a difficult problem to solve. For this reason, in this technical solution, the heat conducting member in the first area extends towards the second area and penetrates through the first partition, and the heat conducting member extending out to the second area extends into the cooling medium of the radiator. Since the temperature of the cooling medium is lower and the temperature of the electrical components is higher, heat will be transferred from the position of the electrical components to the position of the radiator through the heat conducting member, ensuring that a temperature difference can be generated between the heat conducting member and the electrical components, and the heat dissipation problem of the electrical components is thus solved. At the same time, by extending the heat conducting member into the cooling medium, the heat conducting member can be in full contact with the cooling medium, thereby effectively improving the heat exchange efficiency of the heat conducting member. Therefore, the heat dissipation structure for electrical components provided by this technical solution, by arranging the radiator and the electrical components in two mutually partitioned areas respectively, and then forming a heat exchange loop between the electrical components and the radiator through the heat conducting member, not only solves the problem of liquid leakage that easily occurs in the radiator using liquid cooling for heat dissipation, but also solves the heat dissipation problem of the electrical components, ensuring the normal use of the electrical components. And it will not damage the different protection effects of different areas of the cabinet, and devices with higher protection level requirements can be ensured to be protected from foreign matters such as rainwater and dust.

[0017] In technical solution two, an installation base is set up to provide a basis for installing electrical components. At the same time, the heat conducting member is also arranged on the installation base, which is convenient for the electrical components and the heat conducting member to be attached to each other, improving the overall heat dissipation efficiency.

[0018] In technical solution three, multiple heat conductive parts and electrical components are provided, each heat conductive part is separated from each other, each electrical component is also separated from each other, and each heat conductive part corresponds to an electrical component. The mutually separated layout can avoid mutual influence between electrical components and heat conductive parts. Each heat conductive part corresponds to an electrical component, so that each heat conductive part can independently dissipate heat for an electrical component, thereby improving the heat dissipation efficiency of the electrical component, and less material of the heat conductive part is required, effectively reducing the manufacturing cost.

[0019] In technical solution four, the electrical components are mounted on the mounting surface of the mounting base, which facilitates the installation of the electrical components; at the same time, the heat conductor is embedded in the mounting surface of the mounting base and is flush with the mounting surface, so that the back of the electrical component can be tightly attached to the heat conductor, the position of the heat conductor is firmly fixed, and at the same time, the mutual influence between the heat conductors is isolated by the mounting base.

[0020] In technical solution five, the heat conductor extends into the liquid phase of the cooling medium of the radiator. Since the cooling medium dissipates heat through gas-liquid phase change, the liquid phase turns into gas phase after the temperature rises and takes away heat. Therefore, the temperature of the liquid phase is lower than that of the gas phase. The heat conductor extends into the liquid phase, which can further improve the heat exchange efficiency of the heat conductor. At the same time, the connection between the heat conductor and the radiator is sealed, and the liquid phase of the cooling medium in the radiator is located on the lower side, and the gas phase is located on the upper side. The connection between the heat conductor and the radiator is surrounded by the gas phase. Even if the seal of the connection between the heat conductor and the radiator fails, it can prevent the liquid phase from overflowing.

[0021] In technical solution six, the heat conductor is a sealed heat pipe with a phase change heat medium inside. The heat exchange efficiency of the heat pipe is higher than that of a simple metal component. The use of a heat pipe can effectively improve the heat exchange efficiency between the electrical component and the radiator. In addition, when the radiator is completely filled with liquid cooling medium, the fluid pressure inside the radiator is relatively high. Since the heat conductor needs to be inserted into the radiator, the connection between the heat conductor and the radiator needs to be effectively sealed. Conventional threaded sealing, sealing ring sealing and other means are prone to failure under high fluid pressure. If welding is used for sealing, high-temperature welding such as brazing must be used to provide pressure resistance. However, when the heat conductor is a heat pipe, high-temperature welding is likely to cause damage to the heat pipe. For this reason, the cooling medium in the radiator in this solution uses a material that dissipates heat through a gas-liquid phase change. At this time, the liquid phase basically has no flow and the gas phase fluid pressure is also relatively small. Therefore, the connection between the heat conductor and the radiator can use conventional sealing methods without worrying about sealing failure. Even if a heat pipe is used as a heat conductor, it can be sealed by soldering or other methods.

[0022] In Technical Solution VII, the heat conducting member can be hermetically fitted with the radiator in various ways to prevent the leakage of the cooling medium in the radiator. Low-temperature welding can be used to avoid damage in the case where the heat conducting member is a heat pipe.

[0023] In Technical Solution VIII, the heat conducting member extends from the top of the radiator into the interior of the radiator, with the adiabatic section of the heat conducting member located above the radiator, which facilitates the insertion of the heat conducting member into the interior of the radiator. In addition, when the heat conducting member extends from the top of the radiator into the interior of the radiator, the connection part between the two is also located at the top of the radiator. The upper part of the radiator mainly contains the gaseous cooling medium, and the possibility of leakage of the liquid cooling medium is lower.

[0024] In Technical Solution IX, a third area is also provided in the cabinet body, and a heat exchanger is arranged in the third area. The third area can be completely exposed to ensure the normal use of the heat exchanger, and the cooling medium is cooled by the heat exchanger. At the same time, a multi-level liquid leakage protection area of the first area, the second area and the third area is formed on the cabinet body. In the actual application scenario, if the second area is directly exposed, it will cause the radiator, related liquid cooling pipe fittings, etc. to be directly exposed to the external environment. After long-term use, problems such as aging and damage are likely to occur. By setting three levels of liquid leakage protection and taking advantage of the relatively independent characteristics of the second area, the normal use of the radiator and liquid cooling pipe fittings can be ensured and their service life can be extended.

[0025] Technical Solution X provides an electrical cabinet with water and electricity separation. Since the above-mentioned heat dissipation structure of the electrical cabinet components is adopted, this electrical cabinet can prevent external liquid leakage from affecting the electrical components in the first area, and realizes a cabinet layout that separates the parts that may leak liquid from the electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the electrical cabinet provided by the embodiment of the present invention;

[0028] Figure 2 For Figure 1 the schematic diagram of the heat dissipation structure of the electrical components adopted by the electrical cabinet in

[0029] Figure 3 For Figure 2 the partial structural schematic diagram of the heat dissipation structure of the electrical components in Figure 1 ;

[0030] Figure 4 ForFigure 2 Schematic diagram of some structures of heat dissipation structure of electrical components Figure 2 .

[0031] Description of main reference numerals:

[0032] Cabinet 1; cabinet body 2; first partition 3; first area 4; second area 5; heat conductor 6; electrical component 7; radiator 8; medium cavity 9; mounting base 10; mounting surface 11; condensation part 12; evaporation part 13; second partition 14; third area 15; heat exchanger 16; conveying pipe 17; sealing part 18; quick connector 19; conveying port 20; gas phase 21; liquid phase 22. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0035] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0036] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0037] In the claims, the description and the above-mentioned drawings of the present utility model, when using terms such as "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0038] Referring to Figure 1 , an embodiment of the present utility model provides an electrical cabinet with water and electricity separation. Figure 1 It shows the main layout structure of the electrical cabinet 1. The electrical cabinet 1 mainly includes a cabinet body 2, a heat conducting member 6, electrical components 7, a radiator 8 and a heat exchanger 16. The electrical components 7 are located inside the cabinet body 2 and are cooled by the cooperation of the heat conducting member 6, the radiator 8 and the heat exchanger 16. In this embodiment, the electrical cabinet 1 is an inverter, and the above-mentioned electrical components 7 are power modules, and the power modules are generally IGBT switching tubes. Of course, this does not mean that the electrical cabinet 1 only includes the above-mentioned devices. Other devices such as reactors and transformers can also be installed in the cabinet body 2 and can be set according to actual needs. In addition, in other embodiments, the electrical cabinet 1 can be other types of electrical cabinets 1, such as energy storage cabinets 1, high-voltage cabinets 1, etc. In different types of electrical cabinets 1, the types of electrical components 7 can be adjusted according to actual needs.

[0039] Referring to Figure 1 , in the electrical cabinet with water and electricity separation provided in this embodiment, the electrical components 7 generate a large amount of heat during operation, so it is necessary to dissipate heat from them. Generally speaking, the heat dissipation method in the electrical cabinet 1 is air-cooled heat dissipation. However, when the cold air is difficult to reach the position of the electrical components 7, or the heat dissipation capacity provided by the cold air is not sufficient to meet the requirements, other methods are needed for heat dissipation. In this embodiment, the electrical cabinet 1 adopts a new heat dissipation structure for electrical cabinet components. This heat dissipation structure can dissipate heat from specific electrical components 7 that generate heat and can prevent external liquids from affecting the electrical components 7.

[0040] Referring to Figure 1 , in the above-mentioned heat dissipation structure for electrical cabinet components, the cabinet body 2 of the cabinet 1 is provided with a first area 4 and a second area 5 separated by a first partition 3. Among them, the first area 4 is in a closed state, and the first area 4 is provided with a heat conducting member 6. The electrical components 7 that need to be cooled are attached to the heat conducting member 6; the second area 5 is provided with a radiator 8 that dissipates heat through the circulating flow of a cooling medium. The heat conducting member 6 extends towards the second area 5 and penetrates through the first partition 3, and the part extending into the second area 5 extends into the cooling medium of the radiator 8.

[0041] In addition, the cabinet body 2 is provided with a third area 15 separated from the second area 5 by a second partition 14. The first area 4 and the second area 5 are in a closed state; the third area 15 is provided with a heat exchanger 16, which is communicated with the radiator 8 through a conveying pipe fitting 17 for conveying a cooling medium, and the liquid cooling pipe fitting penetrates through the second partition 14.

[0042] Specifically, referring to Figure 1 , the cabinet body 2 of the cabinet 1 includes a frame and side plates fixed to the frame. The frame is used to define the scope of the cabinet body 2 and support the cabinet body 2, and the side plates are used to separate the cabinet body 2 from the outside world, making the cabinet body 2 an independent component. Among them, in the cabinet body 2 provided in this embodiment, a first area 4, a second area 5, and a third area 15 are partitioned. Among them, the first area 4 and the second area 5 are in a closed state, and the third area 15 is in an open state. Here, the closed state means that the corresponding area is not directly connected to the outside of the cabinet body 2, or a closed treatment is performed at the part separated from the outside of the cabinet body 2; the open state means that the corresponding area is directly connected to the outside of the cabinet body 2, and rainwater, dust, etc. in the external environment of the cabinet body 2 can directly reach the third area 15. In this embodiment, both the first area 4 and the second area 5 have their own protection level requirements, but the protection level requirement of the second area 5 is lower than that of the first area 4. For example, the protection level of the first area 4 is IP66, and the protection level requirement of the second area 5 is IP65.

[0043] Referring to Figure 1 , the outermost side plate on the cabinet body 2 defines the outer boundary of the cabinet body 2, and at the same time defines a chamber inside the cabinet body 2. In this chamber, the first area 4 and the second area 5 are also defined by a partition. Referring to Figure 1 , the partition used to define the first area 4 and the second area 5 here is the first partition 3, and the partition used to define the first area 4, the second area 5, and the third area 15 is the second partition 14. Both the first partition 3 and the second partition 14 can be fixed to the frame by bolts. The first area 4 is located at the front side of the cabinet body 2, the second area 5 is located at the rear side of the cabinet body 2, and the third area 15 is located at the top of the cabinet body 2. The electrical component 7 is arranged in the first area 4, the radiator 8 is arranged in the second area 5, and the heat exchanger 16 is arranged in the third area 15. A part of the heat conducting member 6 is located in the first area 4, a part is located in the second area 5, and the heat conducting member 6 penetrates through the first partition 3.

[0044] Among them, referring to Figure 2, the radiator 8 dissipates heat through the circulating flow of the cooling medium. Inside the radiator 8, there is a medium cavity 9 for accommodating the cooling medium, and at the same time, a delivery port 20 is provided on the radiator 8. The delivery port 20 is communicated with the heat exchanger 16 through a delivery pipe fitting 17. The heat exchanger 16 can drive the cooling medium to circulate between the heat exchanger 16 and the radiator 8, and deliver the cooler cooling medium to the radiator 8, and recover the hotter cooling medium. In this embodiment, the cooling medium in the radiator 8 can dissipate heat through gas-liquid phase change. The cooling medium delivered by the heat exchanger 16 to the radiator 8 is the cooler liquid phase 22, and the cooling medium recovered from the radiator 8 is the hotter gas phase 21. Gas-liquid phase change can take away a large amount of heat in a short time and has a high heat dissipation efficiency. Refer to Figure 1 , the liquid phase 22 of the cooling medium in the medium cavity 9 is located below, and the gas phase 21 is located above.

[0045] Refer to Figure 1 , the liquid cooling pipe fitting includes two pipelines. One pipeline delivers the low-temperature cooling medium, and the other pipeline delivers the high-temperature cooling medium. A quick connector 19 is provided on the second partition 14. The upper and lower ends of the quick connector 19 can both achieve quick connection of the pipelines. The pipeline of the delivery pipe fitting 17 in the second area 5 is connected to the part below the quick connector 19, and the pipeline in the third area 15 is connected to the part above the quick connector 19. By assembling and connecting the delivery pipe fitting 17 through the quick connector 19, the assembly and maintenance of the delivery pipe fitting 17 can be facilitated. The heat exchanger 16 can exchange heat with the outside through air cooling to quickly cool down the recovered high-temperature liquid cooling medium.

[0046] The heat conducting member 6 can be made of a metal material with a high thermal conductivity coefficient to quickly transfer heat from the position of the electrical component 7 to the position of the radiator 8. At the same time, the heat conducting member 6 extends into the medium cavity 9 inside the radiator 8 and is in direct contact with the cooling medium, which can effectively improve the heat dissipation efficiency of the cooling medium to the heat conducting member 6. A seal 18, such as a rubber sealing ring, can be provided at the position where the heat conducting member 6 penetrates through the first partition 3, or the heat conducting member 6 can be directly welded to the first partition 3 to achieve better sealing. The connection between the heat conducting member 6 and the first partition 3 is sealed to prevent external liquid from entering the first area 4 through the connection between the heat conducting member 6 and the first partition 3. It should be noted that for the heat conducting member referred to in this specification and the claims, the following understanding should be made: The heat conducting member is a complete component independent of the electrical component to be cooled and the radiator. It can transfer heat through the characteristics of its own material or through the state change of the internal material, but it does not transfer heat to the radiator through the medium delivery method.

[0047] In the heat dissipation structure described above, a part of the heat conducting member 6 is in contact with the electrical component 7 that needs to dissipate heat, and a part extends into the medium cavity 9 of the radiator 8 through the first partition 3 and is in direct contact with the cooling medium. The heat generated by the operation of the electrical component 7 is transferred to the radiator 8 through the heat conducting member 6. Since the radiator 8 always dissipates heat from the heat conducting member 6, a temperature difference is generated between the two parts of the heat conducting member 6, enabling the heat of the electrical component 7 to be continuously transferred to the radiator 8, thus achieving heat dissipation for the electrical component 7. At the same time, since the radiator 8 is arranged in the second area 5, and the second area 5 is separated from the first area 4 by the first partition 3, even if the radiator 8 leaks liquid, it will not affect the electrical component 7 in the first area 4. Therefore, in the above-mentioned heat dissipation structure for the electrical component 7, by arranging the radiator 8 and the electrical component 7 in two mutually separated areas respectively, and then forming a heat exchange loop between the electrical component 7 and the radiator 8 through the heat conducting member 6, it not only solves the problem of liquid leakage that easily occurs in the radiator 8 using the liquid cooling method, but also solves the heat dissipation problem of the electrical component 7, ensuring the normal use of the electrical component 7; moreover, it does not damage the different protection effects of different areas of the cabinet 2, and devices with higher protection level requirements can be ensured to be protected from foreign matters such as rain and dust. In addition, multi-level liquid leakage protection areas of the first area 4, the second area 5 and the third area 15 are formed on the cabinet 2; in the actual application scenario, if the second area 5 is directly exposed, it will cause the radiator 8, related liquid cooling pipe fittings, etc. to be directly exposed to the external environment. After long-term use, problems such as aging and damage are likely to occur. By setting three levels of liquid leakage protection and utilizing the relatively independent characteristics of the second area 5, the normal use of the radiator 8 and the liquid cooling pipe fittings can be ensured and their service life can be extended.

[0048] Referring to Figure 1 , the first area 4 is provided with an installation base 10, and the heat conducting member 6 and the electrical component 7 are fixedly installed on the installation base 10. In addition, referring to Figure 2 , a plurality of heat conducting members 6 and electrical components 7 are provided in a mutually separated manner, and each heat conducting member 6 corresponds to each electrical component 7 one by one. The electrical component 7 is installed on the installation surface 11 of the installation base 10; the heat conducting member 6 is embedded in the installation surface 11 of the installation base 10 and is flush with the installation surface 11.

[0049] Specifically, referring to Figures 2 to 4, an installation base 10 is provided in the first area 4. An installation surface 11 is formed on the upper side surface of the installation base 10. The electrical component 7 can be fixedly installed on the installation surface 11 through fasteners such as bolts, and the installation base 10 can be fixed on the cabinet 2 through bolts. At the same time, an embedding groove adapted to the size of the heat conducting member 6 is provided on the installation surface 11 of the installation base 10. The heat conducting member 6 is embedded into the embedding groove, and the upper side surface of the heat conducting member 6 is flush with the installation surface 11, so that the electrical component 7 can be closely attached to the heat conducting member 6 while being stably fixed on the installation base 10. Moreover, the heat conducting member 6 is installed by an embedding method, which can avoid the situation of displacement of the heat conducting member 6 and the like.

[0050] In this embodiment, a plurality of heat conducting members 6 are provided, and a plurality of electrical components 7 are also provided. The number of heat conducting members 6 is the same as the number of electrical components 7, and one heat conducting member 6 is correspondingly used for dissipating heat from one electrical component 7. Among them, the heat conducting members 6 are spatially separated from each other, and the electrical components 7 are also spatially separated from each other. Specifically, referring to Figure 4 , the heat conducting members 6 are arranged in the left-right direction on the installation base 10 and extend in the front-back direction. Each heat conducting member 6 is separated by the installation base 10, and the installation base 10 can be made of a material with a low thermal conductivity coefficient, so as to reduce the mutual influence between the heat conducting members 6. Referring to Figure 3 , the electrical components 7 are installed above the corresponding heat conducting members 6, and each electrical component 7 is also separated from each other to avoid mutual influence between the electrical components 7.

[0051] Among them, the heat conducting member 6 of this embodiment is a heat pipe with a phase change heat transfer medium inside. The heat pipe is a conventional heat conducting element. Compared with conventional metal components, using a heat pipe can greatly improve the heat transfer efficiency of the heat conducting member 6. It should be noted that each heat conducting member 6 can include only one heat pipe or multiple heat pipes. For example, one electrical component 7 can be cooled by two heat pipes arranged side by side at the same time. Referring to Figure 1 , the part of the heat conducting member 6 extending into the radiator 8 is the condensation section, and the part in contact with the electrical component 7 is the evaporation section. In the evaporation section of the heat pipe, the working liquid in the wick is heated and evaporated, and takes away heat, which is the latent heat of vaporization of the phase change heat transfer medium. The steam flows from the central channel to the condensation section of the heat pipe, condenses into a liquid, and releases latent heat at the same time. Under the action of capillary force, the liquid flows back to the evaporation section. In this way, a closed cycle is completed, and a large amount of heat can be transferred from the evaporation section to the condensation section. In addition, the condensation section of the heat conducting member 6 extends into the liquid phase 22 of the cooling medium, and can quickly cool and re-cool the phase change heat transfer medium to the liquid phase 22.

[0052] Referring to Figure 1, the connection between the heat conducting member 6 and the radiator 8 is sealed. At the same time, since the liquid phase 22 of the cooling medium is located below the gas phase 21, the gas phase 21 is around the connection between the heat conducting member 6 and the radiator 8. Even if the seal at the connection between the heat conducting member 6 and the radiator 8 fails, it can prevent the liquid phase 22 from overflowing. At the same time, the connection between the heat conducting member 6 and the radiator 8 can be sealed by means of low-temperature welding, screw fastening or rubber ring fitting. In this embodiment, a rubber ring is selected as the seal 18 to seal the connection between the heat conducting member 6 and the radiator 8. In addition, the part of the heat conducting member 6 on the mounting base 10 is flattened, while the part in the radiator 8 is not flattened, so as to improve the heat exchange efficiency.

[0053] In this embodiment, a heat pipe is used as the heat conducting member 6, and it is combined with a cooling medium that dissipates heat through gas-liquid phase change to achieve heat dissipation. It is easy to understand that when the cooling medium in the radiator 8 is completely in the liquid phase, the fluid inside the radiator 8 will have a relatively large pressure. Since the heat conducting member 6 needs to be inserted into the radiator 8, an effective seal needs to be made at the connection part between the heat conducting member 6 and the radiator 8. Conventional means such as screw seal and sealing ring seal are likely to fail under high fluid pressure. If welding is used for sealing, high-temperature welding such as brazing must be used to provide pressure resistance. However, when the heat conducting member 6 is a heat pipe, high-temperature welding is likely to damage the heat pipe. Therefore, in this embodiment, the cooling medium in the radiator 8 uses a material that dissipates heat through gas-liquid phase change. At this time, the liquid phase basically has no flow and the gas-phase fluid pressure is also small. Therefore, the connection part between the heat conducting member 6 and the radiator 8 can use conventional sealing methods without worrying about seal failure. Even if a heat pipe is used as the heat conducting member 6, soldering and other methods can be used for sealing.

[0054] The cabinet electrical component heat dissipation structure and the electrical cabinet with water and electricity separation provided by the present utility model not only solve the problem of liquid leakage that easily occurs in the radiator 8 using the liquid cooling method, but also solve the heat dissipation problem of the electrical component 7, ensuring the normal use of the electrical component 7; and it will not damage the different protection effects of different areas of the cabinet body 2, and devices with higher protection level requirements can be guaranteed to be free from the influence of foreign matters such as rain and dust.

[0055] The above description of the specification and embodiments is used to explain the protection scope of the present utility model, but does not constitute a limitation on the protection scope of the present utility model. Through the inspiration of the present utility model or the above embodiments, those of ordinary skill in the art, combined with common general knowledge, ordinary technical knowledge in the art and / or the prior art, through logical analysis, reasoning or limited experiments, can obtain modifications, equivalent replacements or other improvements to the embodiments of the present utility model or some of its technical features, which should all be included within the protection scope of the present utility model.

Claims

1. A heat dissipation structure for electrical components in a cabinet, characterized in that: The cabinet body (2) of the cabinet (1) is provided with a first area (4) and a second area (5) separated by a first partition (3), and the first area (4) is in a closed state; The first area (4) is provided with a heat conducting member (6), and the electrical component (7) to be cooled is attached to the heat conducting member (6); The second area (5) is provided with a radiator (8) that dissipates heat through the circulating flow of a cooling medium; The heat conducting member (6) extends towards the second area (5) and penetrates through the first partition (3), and the part extending into the second area (5) extends into the cooling medium of the radiator (8).

2. The heat dissipation structure of the electrical components in a cabinet according to claim 1, characterized in that, The first area (4) is provided with a mounting base (10), and the heat conducting member (6) and the electrical component (7) are fixedly mounted on the mounting base (10).

3. The heat dissipation structure of the electrical components of a cabinet according to claim 2, characterized in that, A plurality of the heat conducting members (6) and the electrical components (7) are provided in a mutually separated manner, and each heat conducting member (6) corresponds to each electrical component (7) one by one.

4. The heat dissipation structure of the electrical components of a cabinet according to claim 3, characterized in that, The electrical component (7) is mounted on the mounting surface (11) of the mounting base (10); the heat conducting member (6) is embedded in the mounting surface (11) of the mounting base (10) and is flush with the mounting surface (11).

5. A heat dissipation structure for electrical components of a cabinet according to any one of claims 1-4, characterized in that, The connection between the heat conducting member (6) and the radiator (8) is sealed; the cooling medium in the radiator (8) dissipates heat through gas-liquid phase change, the liquid phase (22) of the cooling medium is located below the gas phase (21), and the heat conducting member (6) extends into the liquid phase (22).

6. The heat dissipation structure of an electrical component in a cabinet according to claim 5, characterized in that, The heat conducting member (6) is a heat pipe with a phase change heat transfer medium inside and is airtight.

7. The heat dissipation structure of the electrical components of a cabinet according to claim 6, characterized in that, The connection between the heat conducting member (6) and the radiator (8) is sealed by means of low-temperature welding, screw fastening or rubber ring fitting.

8. The heat dissipation structure of the electrical components in a cabinet according to claim 6, characterized in that, The heat conducting member (6) extends into the radiator (8) from the top.

9. The heat dissipation structure of the electrical components of a cabinet according to claim 7 or 8, characterized in that, The cabinet body (2) is provided with a third area (15) separated from the second area (5) by a second partition (14), and the first area (4) and the second area (5) are in a closed state; the third area (15) is provided with a heat exchanger (16), which is communicated with the radiator (8) through a conveying pipe fitting (17) for conveying a cooling medium, and the conveying pipe fitting (17) penetrates through the second partition (14).

10. An electrical cabinet with water and electricity separation, characterized in that, Adopt the heat dissipation structure for electrical components in a cabinet according to any one of claims 1-9 to prevent external liquid from leaking into the first area (4) of the cabinet body (2).

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