Water-cooled cabinet heat dissipation structure

Abstract

This application discloses a water-cooled cabinet heat dissipation structure, including: a cabinet assembly, which includes a cabinet body, in which a gas cooling circulation unit is fixedly installed; and a water cooling component, which is fixedly connected to the cabinet body. To address the technical problem in existing technologies where heat accumulates inside ordinary sealed high-protection cabinets and is difficult to dissipate effectively, this application designs a cabinet integrating water cooling and passive heat dissipation functions. Through the overall technical solution formed by the combination of the gas cooling circulation unit and the water cooling component, the cabinet can effectively dissipate the heat generated by the components inside the cabinet while ensuring a high protection level, thereby effectively reducing the operating temperature inside the cabinet, improving component reliability and lifespan, and resolving the contradiction between sealing and heat dissipation. It is particularly suitable for electrical equipment cabinets such as locomotive traction converters that have high dustproof and waterproof requirements and generate a large amount of internal heat.

Description

Technical Field

[0001] This application relates to the field of electrical equipment heat dissipation technology, and in particular to water-cooled cabinet heat dissipation structures. Background Technology

[0002] In applications such as power electronics and traction converters, the cabinet often houses a variety of high-power heat-generating components, including IGBTs, resistors, capacitors, and busbars. These devices generate a lot of heat during operation. If the heat cannot be dissipated in time, the temperature inside the cabinet will continue to rise, seriously affecting the electrical performance, operational stability, and service life of the internal components.

[0003] Traditionally, to address heat dissipation issues, common solutions include using open or semi-open cabinet structures. This involves creating ventilation holes or louvers in the cabinet to allow for natural temperature differences between the inside and outside of the cabinet, or installing fans for forced ventilation.

[0004] However, in industrial environments such as locomotives, mines, and steel plants, where there is a lot of dust, high humidity, and corrosive gases, the open structure makes it easy for dust, moisture, and corrosive particles to enter the cabinet and adhere to the components and circuits. This not only reduces the insulation performance but may also cause faults such as discharge and short circuits. At the same time, dust accumulation will also seriously affect heat dissipation efficiency and increase the burden and cost of daily maintenance and cleaning.

[0005] In other words, existing technologies suffer from the following technical problems: ordinary open-type server racks experience internal contamination due to heat dissipation and air exchange with the outside environment. Therefore, a water-cooled server rack heat dissipation structure is proposed to address these issues. Utility Model Content

[0006] This application provides a water-cooled cabinet heat dissipation structure to solve the problem of internal pollution caused by heat dissipation and external gas exchange in ordinary open cabinets in the prior art.

[0007] According to one aspect of this application, a water-cooled cabinet heat dissipation structure is provided, comprising:

[0008] The cabinet assembly includes a cabinet body, and a gas cooling circulation unit is fixedly installed in the inner cavity of the cabinet body.

[0009] Several gas cooling circulation units are provided, and these gas cooling circulation units are connected in series and fixed to the inner wall of the cabinet.

[0010] The water-cooled cooling component is fixedly connected to the cabinet. The water-cooled cooling component includes a fixed shell and a heat-conducting base, which is connected to the gas cooling circulation unit.

[0011] Furthermore, the cabinet assembly also includes a cabinet door, which is hinged to the open side of the cabinet.

[0012] Furthermore, the gas cooling circulation unit includes a mounting base, a heat exchange plate, and a circulating fan;

[0013] A fixed frame is fixedly connected to the side of the mounting base, a heat exchange plate is fixedly connected to the inner wall of the fixed frame, and a circulating fan is fixedly installed on one side of the fixed frame.

[0014] Furthermore, the heat exchange plate is in the shape of an aluminum bent plate, and the interior of the heat exchange plate is provided with a flow channel for the coolant to flow. An input end and an output end are fixedly connected to one side of the mounting base, and the input end and the output end are respectively connected to the two ends of the flow channel of the heat exchange plate.

[0015] Furthermore, several gas cooling circulation units are connected in series from end to end via connecting pipes.

[0016] Furthermore, a heat-conducting seat is fixedly connected to one side of the fixed shell, forming a shell structure with an internal cavity. A water-cooled inner cavity is provided inside the cavity formed by the fixed shell and the heat-conducting seat.

[0017] Furthermore, the back side wall of the cabinet has an opening, the fixing shell is fitted into the opening of the cabinet, and the heat conduction seat is fixedly connected to the inside of the cabinet on the inner wall of the cabinet, while the fixing shell is fixedly connected to the outer wall of the cabinet on the outer wall of the cabinet.

[0018] Furthermore, the water-cooled inner cavity is filled with cooling water, and a delivery pump is fixedly installed on the side wall of the fixed shell. The input end of the delivery pump is connected to the bottom of the water-cooled inner cavity, and the output end of the delivery pump is fixedly connected to one end of an output pipe. The other end of the output pipe is connected to the input end of a gas cooling circulation unit. The output end of another gas cooling circulation unit is connected to one end of a return pipe, and the other end of the return pipe extends to the upper wall of the fixed shell and is connected to the water-cooled inner cavity.

[0019] Furthermore, a number of heat-conducting fins are fixedly installed in the inner cavity of the fixed shell. One end of each heat-conducting fin penetrates the outer cavity wall of the fixed shell and extends to the outside of the wall. A cooling fan is fixedly installed at the bottom of the heat-conducting fins.

[0020] Furthermore, an auxiliary cooling component is fixedly connected to the water-cooled cooling component. The auxiliary cooling component includes a horizontal pipe and an atomizing nozzle. Several atomizing nozzles are installed on the horizontal pipe. One end of a diversion pipe is fixedly connected to the horizontal pipe, and the other end of the diversion pipe is connected to the return pipe.

[0021] In order to solve the technical problem of heat accumulation inside ordinary sealed high-protection cabinets in the prior art, this application designs a cabinet that integrates water cooling and passive heat dissipation functions. Through the overall technical solution formed by the combination of the internal gas cooling circulation unit and the water cooling component, the cabinet can effectively dissipate the heat generated by the components inside the cabinet while ensuring the high protection level of the cabinet. This effectively reduces the internal operating temperature of the cabinet, improves the reliability and life of the components, and thus solves the contradiction between airtightness and heat dissipation. It is particularly suitable for electrical equipment cabinets such as locomotive traction converters that have high requirements for dust and water resistance and high internal heat generation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0024] Figure 2 This is a three-dimensional structural diagram of the back of an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the internal structure of a cabinet according to one embodiment of this application;

[0026] Figure 4 This is a schematic diagram showing the distribution of a gas cooling circulation unit according to an embodiment of this application;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of a gas cooling circulation unit according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the internal structure of a water-cooled cooling component according to an embodiment of this application;

[0029] Figure 7 This is one embodiment of the present application. Figure 2 A magnified structural diagram of point A.

[0030] In the picture:

[0031] 1. Rack components; 101. Rack body; 102. Rack door; 103. Hinges; 104. Door lock; 105. Support legs;

[0032] 2. Gas cooling circulation unit; 201. Mounting base; 202. Fixing frame; 203. Heat exchange plate; 204. Circulating fan; 205. Input end; 206. Output end; 207. Connecting pipe;

[0033] 3. Water-cooled cooling components; 301. Mounting shell; 302. Heat-conducting base; 303. Water-cooled inner cavity; 304. Heat-conducting fin plate; 305. Sealing ring; 306. Cooling fan; 307. Transfer pump; 308. Output pipe; 309. Return pipe;

[0034] 4. Auxiliary cooling components; 401. Horizontal pipe; 402. Connecting bracket; 403. Atomizing nozzle; 404. Diversion pipe; 405. Connecting pipe; 406. Electromagnetic control valve. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0036] Please see Figure 1 and Figure 2 As shown, the water-cooled cabinet heat dissipation structure includes:

[0037] The cabinet assembly 1 includes a cabinet 101, and a gas cooling circulation unit 2 is fixedly installed in the inner cavity of the cabinet 101.

[0038] Several gas cooling circulation units 2 are provided, and the gas cooling circulation units 2 are arranged in an array and connected in series to be fixed on the inner wall of the cabinet 101 to generate circulating airflow and play a role in cooling.

[0039] The water-cooled cooling component 3 is fixedly connected to the cabinet 101. The water-cooled cooling component 3 includes a fixed shell 301 and a heat-conducting base 302. The heat-conducting base 302 is connected to the gas cooling circulation unit 2 and is used to transfer the heat absorbed in the gas cooling circulation unit 2 to the water-cooled cooling component 3 for dissipation.

[0040] This application presents an integrated technical solution combining the internal gas cooling circulation unit 2 and the water cooling component 3. This solution enables the cabinet to effectively dissipate the heat generated by the components inside the cabinet while ensuring a high level of protection. This effectively reduces the operating temperature inside the cabinet, improves the reliability and lifespan of the components, and resolves the contradiction between airtightness and heat dissipation. It is particularly suitable for electrical equipment cabinets such as locomotive traction converters that have high requirements for dust and water resistance and generate a lot of internal heat.

[0041] In a preferred embodiment of this application, see [reference] Figure 1 and Figure 2 As shown, the cabinet assembly 1 also includes a cabinet door 102. The cabinet door 102 is hinged to the open side of the cabinet body 101 via a hinge 103, forming an openable and closable sealed cabinet structure for the installation, inspection and maintenance of equipment.

[0042] A door lock 104 is also installed between the cabinet door 102 and the cabinet body 101 to lock the cabinet door 102 and ensure the airtightness and security of the cabinet.

[0043] The bottom of the cabinet 101 is fixedly connected to a support bracket 105, which is used to support the entire cabinet and keep it at a certain distance from the ground, so as to facilitate cabling and prevent moisture.

[0044] To achieve a high level of protection and prevent the intrusion of dust, moisture, etc., the cabinet 101 adopts a sealed structure. Specifically, the side walls, top walls, and bottom walls of the cabinet 101 are all continuous sheet metal structures without holes, ventilation louvers, or heat dissipation openings, which serves to isolate the exchange of gases inside and outside the cabinet and prevent external pollutants from entering. In addition, a rubber sealing strip is installed between the cabinet 101 and the cabinet door 102 to achieve a sealing, dustproof, and waterproof effect.

[0045] In a preferred embodiment of this application, see [reference] Figure 3 and Figure 5 As shown, the gas cooling circulation unit 2 includes a mounting base 201, a heat exchange plate 203, and a circulating fan 204.

[0046] A fixed frame 202 is fixedly connected to the side of the mounting base 201, a heat exchange plate 203 is fixedly connected to the inner side wall of the fixed frame 202, and a circulating fan 204 is fixedly installed on one side of the fixed frame 202, forming an independent forced air cooling heat exchange structure that can force air to pass through the heat exchange plate 203.

[0047] Further, see Figure 4 As shown, in a specific implementation, four gas cooling circulation units 2 are provided, for example, distributed on the upper and lower sides of the inner wall and the left and right side walls of the cabinet 101.

[0048] Meanwhile, the four circulating fans 204 are arranged diagonally, symmetrically, or centrally symmetrically to form an effective air circulation inside the cabinet. This avoids airflow short-circuiting and ensures that hot air in each area of ​​the cabinet can be effectively driven to the heat exchange plate 203, so that the gas in the inner cavity of the cabinet 101 can exchange heat. When the gas flows through the heat exchange plate 203, it exchanges heat with the coolant flowing inside the heat exchange plate 203, thereby transferring the heat of the gas to the coolant and cooling the gas.

[0049] Furthermore, in order to improve heat exchange efficiency, the heat exchange plate 203 is made of aluminum bent plate to increase the contact area between the coolant and the air within a limited volume, thereby enhancing the heat exchange effect. The heat exchange plate 203 has a flow channel for coolant flow inside. An input end 205 and an output end 206 are fixedly connected to one side of the mounting base 201. The input end 205 and the output end 206 are respectively connected to the two ends of the flow channel of the heat exchange plate 203 to form the inlet and outlet interfaces of the coolant.

[0050] Several gas cooling circulation units 2 are connected in series via connecting pipes 207 to form a series coolant circulation path. With this technical solution, when the coolant flows through this path under the drive of the pump, it can flow through the internal flow channels of all heat exchange plates 203 in sequence, thereby carrying away the heat absorbed by each heat exchange plate 203 from the air and playing the role of collecting heat in the cabinet.

[0051] In a preferred embodiment of this application, see [reference] Figure 3 and Figure 6 As shown, a heat-conducting seat 302 is fixedly connected to one side of the fixed shell 301, forming a shell structure with an internal cavity. A water-cooled inner cavity 303 is provided inside the cavity formed by the fixed shell 301 and the heat-conducting seat 302.

[0052] As a preferred technical solution, in order to achieve integrated integration with the cabinet, reduce external space occupation and utilize the cabinet shell for heat dissipation, an opening is provided on the back side wall of the cabinet 101, the fixing shell 301 is fitted into the opening of the cabinet 101, and the heat conduction seat 302 is fixedly connected to the inner wall of the cabinet 101 inside the cabinet 101.

[0053] The fixed shell 301 is located on the outer wall of the cabinet 101 and is fixedly connected to the outer wall of the cabinet 101. The fixed shell 301 is also provided with a sealing ring 305 to ensure the seal between the fixed shell 301 and the opening of the cabinet 101 and maintain the overall protection level of the cabinet 101.

[0054] Through this technical solution, on the one hand, the water-cooled cooling component 3 serves as a functional side panel of the cabinet with a compact structure; on the other hand, the heat-conducting base 302 is located inside the cabinet and can serve as a mounting base for some high-heat-generating components, playing an auxiliary role in heat conduction and cooling. The exposed fixed shell 301 facilitates heat dissipation to the outside air.

[0055] Furthermore, such as Figure 2 As shown, the water-cooled inner cavity 303 is filled with cooling water. A delivery pump 307 is fixedly installed on the side wall of the fixed shell 301. The input end of the delivery pump 307 is connected to the bottom of the water-cooled inner cavity 303. The output end of the delivery pump 307 is fixedly connected to one end of the output pipe 308. The other end of the output pipe 308 is connected to the input end 205 of the first gas cooling circulation unit 2 in the series circuit. The output end 206 of the other gas cooling circulation unit 2 is connected to one end of the return pipe 309. The other end of the return pipe 309 extends to the upper wall of the fixed shell 301 and is connected to the water-cooled inner cavity 303, forming a return path for the high-temperature cooling medium.

[0056] When the device is running, the high-temperature cooling medium heated by the heat inside the cabinet can flow from the top of the water-cooled inner cavity 303 through the return pipe 309, so that the heated cooling medium flows from top to bottom through the water-cooled inner cavity 303, which is conducive to heat exchange with the lower part of the cavity with a lower temperature and sedimentation.

[0057] A plurality of heat-conducting fin plates 304 are fixedly disposed in the inner cavity of the fixed shell 301. One end of the plurality of heat-conducting fin plates 304 penetrates through the outer cavity wall of the fixed shell 301 and extends to the outside of the wall, forming a heat dissipation fin array exposed to the outside air.

[0058] A cooling fan 306 is fixedly installed at the bottom of the heat-conducting fin plate 304. It is used to start when the ambient temperature is high or the heat load is large, to force the cooling fins to blow and enhance the heat dissipation capacity.

[0059] With this technical solution, when the high-temperature cooling medium flows through the water-cooled inner cavity 303, the heat is conducted to the heat-conducting fin plate 304 through the metal walls of the fixed shell 301 and the heat-conducting seat 302. The large outer surface area of ​​the heat-conducting fin plate 304 is used to dissipate the heat into the surrounding air, thereby achieving the cooling of the cooling medium. On the one hand, it utilizes natural convection and radiation heat dissipation, which is energy-saving and environmentally friendly; on the other hand, it can be forced to dissipate heat through the cooling fan 306 when needed.

[0060] In a preferred embodiment of this application, in order to further improve heat dissipation capacity under extreme high-temperature environments and provide emergency heat dissipation measures, see [reference needed]. Figure 2 and Figure 7 As shown, an auxiliary cooling component 4 is also fixedly connected to the water-cooled cooling component 3. The auxiliary cooling component 4 includes a horizontal pipe 401 and an atomizing nozzle 403.

[0061] Several horizontal tubes 401 are provided, and each end of several horizontal tubes 401 is fixedly connected to a connecting bracket 402. The connecting bracket 402 is fixedly located on the side of the heat-conducting fin plate 304.

[0062] Several atomizing nozzles 403 are installed on the horizontal tube 401 to atomize the cooling water into tiny droplets and spray them onto the surface of the heat dissipation fins of the heat-conducting fin plate 304 below.

[0063] Several horizontal pipes 401 are connected by a connecting pipe 405 to form a common spray distribution network. One end of a diversion pipe 404 is fixedly connected to one of the horizontal pipes 401. The other end of the diversion pipe 404 is connected to the return pipe 309, forming a branch that diverts a portion of the medium from the high-temperature cooling medium circuit for spraying. An electromagnetic control valve 406 is also fixedly installed on the diversion pipe 404 to control the on / off state of the spray branch.

[0064] With this technical solution, when the ambient temperature rises abnormally and air cooling alone is insufficient, the electromagnetic control valve 406 can be opened. First, a portion of the high-temperature cooling medium is controlled to enter the horizontal pipe 401 through the diversion pipe 404, so that the atomizing nozzle 403 sprays water mist onto the surface of the heated heat dissipation fins. Then, by utilizing the principle that water absorbs a large amount of latent heat of vaporization when it evaporates on the fin surface, the heat dissipation effect is rapidly enhanced. This emergency enhanced heat dissipation, combined with the active and passive heat dissipation methods, further improves the reliability of the device under high-temperature conditions.

[0065] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water-cooled server rack heat dissipation structure, characterized in that: include: The cabinet assembly (1) includes a cabinet (101) and a gas cooling circulation unit (2) is fixedly installed in the inner cavity of the cabinet (101). The gas cooling circulation unit (2) is provided in several units, and the gas cooling circulation units (2) are connected in series and fixed to the inner wall of the cabinet (101). Water-cooled cooling component (3) is fixedly connected to cabinet (101). The water-cooled cooling component (3) includes a fixed shell (301) and a heat-conducting seat (302). The heat-conducting seat (302) is connected to the gas cooling circulation unit (2).

2. The water-cooled cabinet heat dissipation structure according to claim 1, characterized in that: The cabinet assembly (1) also includes a cabinet door (102), which is hinged to the opening side of the cabinet body (101).

3. The water-cooled cabinet heat dissipation structure according to claim 1, characterized in that: The gas cooling circulation unit (2) includes a mounting base (201), a heat exchange plate (203), and a circulating fan (204). A fixed frame (202) is fixedly connected to the side of the mounting base (201), a heat exchange plate (203) is fixedly connected to the inner wall of the fixed frame (202), and a circulating fan (204) is fixedly installed on one side of the fixed frame (202).

4. The water-cooled cabinet heat dissipation structure according to claim 3, characterized in that: The heat exchange plate (203) is in the shape of an aluminum bent plate. The heat exchange plate (203) has a flow channel for coolant to flow inside. An input end (205) and an output end (206) are fixedly connected to one side of the mounting base (201). The input end (205) and the output end (206) are respectively connected to the two ends of the flow channel of the heat exchange plate (203).

5. The water-cooled cabinet heat dissipation structure according to claim 4, characterized in that: Several gas cooling circulation units (2) are connected in series from end to end via connecting pipes (207).

6. The water-cooled cabinet heat dissipation structure according to claim 1, characterized in that: A heat-conducting seat (302) is fixedly connected to one side of the fixed shell (301), forming a shell structure with an internal cavity. A water-cooled inner cavity (303) is provided inside the cavity formed by the fixed shell (301) and the heat-conducting seat (302).

7. The water-cooled cabinet heat dissipation structure according to claim 6, characterized in that: The back side wall of the cabinet (101) has an opening, the fixed shell (301) is fitted into the opening of the cabinet (101), and the heat conduction seat (302) is fixedly connected to the inner wall of the cabinet (101). The fixed shell (301) is located on the outer wall of the cabinet (101) and is fixedly connected to the outer wall of the cabinet (101).

8. The water-cooled cabinet heat dissipation structure according to claim 7, characterized in that: The water-cooled inner cavity (303) is filled with cooling water. A delivery pump (307) is fixedly installed on the side wall of the fixed shell (301). The input end of the delivery pump (307) is connected to the bottom of the water-cooled inner cavity (303). The output end of the delivery pump (307) is fixedly connected to one end of the output pipe (308). The other end of the output pipe (308) is connected to the input end (205) of the gas cooling circulation unit (2). The output end (206) of another gas cooling circulation unit (2) is connected to one end of a return pipe (309), the other end of which extends to the upper wall of the fixed shell (301) and communicates with the water-cooled inner cavity (303).

9. The water-cooled cabinet heat dissipation structure according to claim 8, characterized in that: A plurality of heat-conducting fins (304) are fixedly disposed in the inner cavity of the fixed shell (301), and one end of the plurality of heat-conducting fins (304) penetrates through the outer cavity wall of the fixed shell (301) and extends to the outside of the wall. A cooling fan (306) is fixedly installed at the bottom of the heat-conducting fin plate (304).

10. The water-cooled cabinet heat dissipation structure according to claim 1, characterized in that: An auxiliary cooling component (4) is also fixedly connected to the water-cooled cooling component (3). The auxiliary cooling component (4) includes a horizontal tube (401) and an atomizing nozzle (403). Several atomizing nozzles (403) are installed on the horizontal tube (401). A diversion pipe (404) is fixedly connected to the horizontal pipe (401).

Images