Frequency conversion cabinet body and frequency conversion equipment

Abstract

The utility model is suitable for the technical field of power equipment, and provides a frequency conversion cabinet body and frequency conversion equipment, and the frequency conversion cabinet body comprises a cabinet, a separation structure and a cooling structure. The cabinet has an inner cavity. The separation structure is installed in the inner cavity and divides the inner cavity into a first cavity and a second cavity, the first cavity is used for installing a frequency converter, and the second cavity is used for installing a heating device. The cooling structure is mounted in the first chamber. When the frequency converter is installed in the first cavity and the heating device is installed in the second cavity, the separation structure can prevent at least part of heat generated by the heating device in the second cavity from entering the first cavity, so that the temperature of the first cavity is reduced to a certain extent, and the heat dissipation effect of the frequency converter is improved. The frequency conversion cabinet body is also provided with a cooling structure in the first cavity, so that the heat dissipation effect of the frequency converter can be further improved, the operation stability of the frequency converter is improved, and the service life of the frequency converter is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and more specifically, to a frequency conversion cabinet and a frequency conversion device. Background Art

[0002] The inverter is a power control device that controls the AC motor by changing the frequency of the motor's working power supply. The inverter is usually installed in a frequency converter cabinet, and usually multiple power devices are installed in the inverter cabinet in the area around the inverter. During the operation of the inverter cabinet, in addition to the heat generated by the inverter itself, multiple power devices will also generate a lot of heat, making the temperature around the inverter too high, thereby affecting the normal operation of the inverter, and even causing the inverter to burn out, shortening the service life of the inverter. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a frequency conversion cabinet and a frequency conversion device, aiming to solve the technical problem in the prior art that during the operation of the frequency conversion cabinet, the temperature around the frequency converter is too high, thereby shortening the service life of the frequency converter.

[0004] In order to achieve the above purpose, the technical solution adopted in this application is: to provide a frequency conversion cabinet, including:

[0005] A cabinet having an interior cavity;

[0006] A partition structure is installed in the inner cavity, and the partition structure divides the inner cavity into a first chamber and a second chamber, wherein the first chamber is used to install a frequency converter, and the second chamber is used to install a heating device;

[0007] A cooling structure is installed in the first chamber.

[0008] In a possible design, the frequency conversion cabinet also includes a box body, the box body has a accommodating cavity, and the accommodating cavity is used to accommodate the frequency converter; the box body also has a first side wall; the cabinet is provided with an installation port, and the installation port is connected to the first chamber, and the side of the box body provided with the accommodating cavity is located in the first chamber, the first side wall covers the installation port, the area of ​​the first side wall is larger than the area of ​​the installation port, and the first side wall is detachably connected to the cabinet.

[0009] In a possible design, at least one side wall of the box body is provided with the cooling structure.

[0010] In a possible design, a liquid inlet interface and a liquid outlet interface are provided on a side of the first side wall facing away from the first chamber; the cooling structure includes a liquid cooling pipe, and both ends of the liquid cooling pipe are respectively connected to the liquid inlet interface and the liquid outlet interface.

[0011] In a possible design, the second chamber surrounds at least a portion of the outer side of the first chamber.

[0012] In a possible design, the partition structure includes a first partition and a second partition that are connected to each other, the first partition and the second partition are arranged at an angle, and the first partition and the second partition are respectively connected to the cabinet.

[0013] In a possible design, the cabinet is provided with a first ventilation opening and a second ventilation opening, and the first ventilation opening and the second ventilation opening are respectively connected to the second chamber.

[0014] In a possible design, the cabinet is provided with an opening, a cabinet door is installed at the opening, and the opening is communicated with the first chamber and the second chamber respectively.

[0015] In a possible design, the cabinet has a line inlet and a line outlet, and the line outlet is arranged on a side of the cabinet opposite to the opening.

[0016] The present application also provides a frequency conversion device, comprising a frequency converter and a frequency conversion cabinet provided by any of the above technical solutions, wherein the frequency converter is installed in a first chamber of the frequency conversion cabinet.

[0017] The beneficial effect of the frequency conversion cabinet provided by the present application is that: compared with the prior art, the frequency conversion cabinet provided by the present application is provided with a partition structure to separate the inner cavity of the cabinet into a first chamber and a second chamber. When a frequency converter is installed in the first chamber and a heating device is installed in the second chamber, the partition structure can block at least part of the heat generated by the heating device in the second chamber from entering the first chamber, so as to reduce the temperature of the first chamber to a certain extent, thereby improving the heat dissipation effect of the frequency converter. In addition, the frequency conversion cabinet provided by the present application is also provided with a cooling structure in the first chamber, so that the heat dissipation effect of the frequency converter can be further improved, thereby improving the stability of the operation of the frequency converter and increasing the service life of the frequency converter.

[0018] The beneficial effect of the frequency conversion device provided in the present application is that, compared with the prior art, since the frequency conversion device provided in the present application includes the frequency conversion cabinet provided by any of the above technical solutions, the frequency conversion device provided in the present application has at least all of the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a frequency conversion device provided by an embodiment of the present application from one perspective;

[0021] Figure 2 This is a partial structural diagram of a frequency conversion device provided by an embodiment of the present application. Figure 1 ;

[0022] Figure 3 is a schematic structural diagram of a frequency conversion device provided by an embodiment of the present application from another perspective;

[0023] Figure 4 is a structural schematic diagram of a frequency conversion device provided by an embodiment of the present application when a cabinet door is in an open state;

[0024] Figure 5 This is a partial structural diagram of a frequency conversion device provided by an embodiment of the present application. Figure 2 .

[0025] The reference numerals in the above drawings are as follows:

[0026] 100, cabinet; 110, inner cavity; 111, first chamber; 112, second chamber; 120, cabinet door; 130, opening; 140, first vent; 150, second vent; 151, first zone; 152, second zone; 160, line inlet; 170, line outlet; 180, via;

[0027] 200, partition structure; 210, first partition; 220, second partition;

[0028] 300, box body; 310, first side wall; 311, liquid inlet interface; 312, liquid outlet interface;

[0029] 410, frequency converter; 420, input unit; 430, output unit; 440, control unit; 450, input end; 460, output end. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Finally, it is worth mentioning that in the drawings of the embodiments of the present application, the leads with solid arrows point to the structure itself, and the leads with dots point to a cavity (such as a cavity, a mouth, a hole or a groove, etc.).

[0035] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0036] like Figures 1 to 5 As shown, an embodiment of the present application provides a frequency conversion cabinet, including a cabinet 100, a partition structure 200 and a cooling structure. The cabinet 100 has an inner cavity 110. The partition structure 200 is installed in the inner cavity 110, and the partition structure 200 divides the inner cavity 110 into a first chamber 111 and a second chamber 112. The first chamber 111 is used to install the frequency converter 410, and the second chamber 112 is used to install the heating device. The cooling structure is installed in the first chamber 111.

[0037] The cabinet 100 is a cabinet structure having an inner cavity 110. The cabinet 100 may be cylindrical, prism-shaped, or other irregular structural shapes. In some embodiments, the cabinet 100 may be a prism-shaped structure. For example, Figure 1 As shown, the cabinet 100 is a rectangular parallelepiped structure. The shape and size of the cabinet 100 can be set according to the actual shape and size of the installation space. For ease of description, the following description is based on the cabinet 100 being a rectangular parallelepiped structure.

[0038] The cooling structure may be a liquid cooling structure, an air cooling structure or other structures that can be used for cooling and heat dissipation.

[0039] The partition structure 200 is installed in the inner cavity 110. Specifically, the partition structure 200 is located in the inner cavity 110, and the partition structure 200 is connected to the inner wall of the cabinet 100, so that the partition structure 200 divides the inner cavity 110 into a first chamber 111 and a second chamber 112. The first chamber 111 and the second chamber 112 are two independent chambers. The partition structure 200 can be a plate-like structure. In some examples, the partition structure 200 can include a plurality of partitions, and two adjacent partitions are connected to each other. The two adjacent partitions can be connected by snap-on, screw-on, welding or one-piece molding. In the embodiment of the present application, the one-piece molding method includes but is not limited to stamping molding, extrusion molding or casting molding.

[0040] The second chamber 112 can be equipped with multiple heating devices, such as Figure 2 As shown, the multiple heating devices include but are not limited to an input unit 420, an output unit 430, and a control unit 440. The input unit 420, the output unit 430, and the control unit 440 are respectively connected to the frequency converter 410, and the input unit 420 and the output unit 430 are generally provided with protection structures such as fuses, thermal relays, and current relays to protect the frequency converter 410. The frequency converter 410 is connected to the control unit 440, and the control unit 440 is used to connect to the user end signal to send relevant information of the frequency converter 410 to the user end.

[0041] Compared with the related art, the frequency conversion cabinet provided in the embodiment of the present application, such as Figure 2As shown, by providing a partition structure 200, the inner cavity 110 of the cabinet 100 is divided into a first chamber 111 and a second chamber 112. The frequency conversion cabinet provided in the embodiment of the present application can be applied to frequency conversion equipment. When the frequency conversion cabinet provided in the embodiment of the present application is applied to the frequency conversion equipment, the first chamber 111 is installed with a frequency converter 410, and the second chamber 112 is installed with a heating device. The partition structure 200 can block at least part of the heat generated by the heating device in the second chamber 112 from entering the first chamber 111, so as to reduce the temperature of the first chamber 111 to a certain extent, thereby improving the heat dissipation effect of the frequency converter 410. In addition, the frequency conversion cabinet provided in the embodiment of the present application is also provided with a cooling structure in the first chamber 111, so that the heat dissipation effect of the frequency converter 410 can be further improved, thereby improving the stability of the operation of the frequency converter 410 and improving the service life of the frequency converter 410. In addition, due to the setting of the first chamber 111 and the second chamber 112, when the frequency conversion cabinet is applied to the frequency conversion equipment, the frequency converter 410 and the heating components can be divided into different modules for installation. For example, the frequency converter 410 is installed as a module in the first chamber 111, and multiple heating components are installed as a module in the second chamber 112. Such a setting is beneficial to the maintenance and management of each module on the one hand, and on the other hand, the distance between each module can be relatively increased within a limited space, which is beneficial to improving the heat dissipation effect of the frequency conversion equipment. The better the heat dissipation effect of the frequency conversion equipment, the higher the power density of the frequency conversion equipment.

[0042] In some optional embodiments, a wire hole may be provided on the partition structure 200, and the first chamber 111 and the second chamber 112 are connected through the wire hole, so that the frequency converter 410 in the first chamber 111 is connected to the heating device in the second chamber 112. The size of the wire hole can be set according to the size of the cable to be passed through. Since the cable is usually a slender structure, that is, the outer diameter of the cable is relatively small, the size of the wire hole is also small. Therefore, even if a wire hole is provided on the partition structure 200, the partition structure 200 can still block most of the heat generated by the heating device from entering the first chamber 111. Optionally, a sealing structure may be provided in the wire hole, for example, a sealing ring is provided in the wire hole, and the cable can be passed through the inner hole of the sealing ring and connected to the frequency converter 410 in the first chamber 111 and the heating device in the second chamber 112 respectively.

[0043] In one possible design, Figures 2 to 5As shown, the frequency conversion cabinet also includes a box body 300, and the box body 300 has a accommodating cavity, and the accommodating cavity is used to accommodate the frequency converter 410. The box body 300 also has a first side wall 310. The cabinet 100 is provided with an installation port, and the installation port is connected to the first chamber 111. The side of the box body 300 provided with the accommodating cavity is located in the first chamber 111, and the first side wall 310 covers the installation port. The area of ​​the first side wall 310 is larger than the area of ​​the installation port, and the first side wall 310 is detachably connected to the cabinet 100. It is worth mentioning that the area of ​​the first side wall 310 refers to the area of ​​the side of the first side wall 310 facing the installation port. The area of ​​the installation port refers to the area of ​​the area surrounded by the side walls of the installation port, or in other words, in the cross section perpendicular to the opening direction of the installation port, the area of ​​the installation port is specifically the area of ​​the cross-sectional shape surrounded by the side walls of the installation port. In some examples, in any direction perpendicular to the opening direction of the mounting opening, the length of the first side wall 310 is greater than the length of the mounting opening to ensure that the area of ​​the first side wall 310 is greater than the area of ​​the mounting opening, so that the first side wall 310 can completely cover the mounting opening.

[0044] The mounting opening can be provided on any side wall of the cabinet 100, and the side wall of the cabinet 100 provided with the mounting opening is hereinafter referred to as the second side wall. The first side wall 310 is specifically detachably connected to the side wall of the cabinet 100 provided with the mounting opening, that is, the first side wall 310 is detachably connected to the second side wall. Optionally, the first side wall 310 and the second side wall can be detachably connected by means of a snap connection or a screw connection.

[0045] Since the area of ​​the first side wall 310 is larger than the area of ​​the installation opening, at least a portion of the projection of the first side wall 310 overlaps with the projection of the second side wall on the projection plane perpendicular to the opening 130 of the installation opening. In this way, the middle area of ​​the first side wall 310 is opposite to the installation opening and covers the installation opening, and the outer area of ​​the first side wall 310 located at the periphery of the middle area abuts against the outer side of the second side wall, so that the first side wall 310 and the second side wall can be easily disassembled outside the cabinet 100.

[0046] When the frequency conversion cabinet is applied to the frequency conversion equipment, during the assembly process, the frequency converter 410 can be first installed in the accommodating cavity of the box body 300, and then the side of the box body 300 provided with the accommodating cavity is extended into the first chamber 111 through the installation opening until the first side wall 310 abuts against the second side wall, and then the first side wall 310 and the second side wall are connected by screws, thereby achieving the installation of the frequency converter 410. Optionally, the side wall of the box body 300 can also be provided with a wire hole, and the accommodating cavity and the first chamber 111 are connected through the wire hole on the side wall of the box body 300, and the cable can enter the accommodating cavity through the wire hole on the side wall of the box body 300 and be connected to the frequency converter 410.

[0047] According to the above technical solution, the heat generated by the heating device in the second chamber 112 can be further blocked by the side wall of the box body 300. In addition, the first side wall 310 is arranged so that when the inverter 410 needs to be repaired and maintained, it is not necessary to disassemble the entire cabinet 100, but only the first side wall 310 and the second side wall need to be separated from the outside of the cabinet 100, and the box body 300 and the inverter 410 located in the accommodating cavity can be taken out, thereby realizing the overall disassembly of the inverter 410, so as to facilitate the repair or replacement of the inverter 410. Therefore, such an arrangement can improve the convenience of repairing and maintaining the inverter 410. In one example, the outer area of ​​the first side wall 310 is connected to the second side wall by screws so that the box body 300 can be detachably installed in the first chamber 111.

[0048] In a possible design, at least one side wall of the box 300 is provided with the above cooling structure. Optionally, one of the side walls of the box 300 is provided with the above cooling structure. For example, the first side wall 310 is provided with the above cooling structure. Since the first side wall 310 is located outside the second side wall, the cooling structure is provided on the first side wall 310, which is conducive to the cooling structure to transfer heat to the outside in time, thereby improving the heat dissipation effect of the inverter 410. Alternatively, cooling structures can be installed on different side walls of the box 300, and the number of cooling structures can be one or more, that is, different side walls of the box 300 can be installed with cooling structures, and the cooling structures installed on different side walls of the box 300 can be the same cooling structure or different cooling structures. In some examples, each side wall of the box 300 is installed with a cooling structure, so that the heat dissipation effect of the inverter 410 can be further improved.

[0049] In a possible design, a liquid inlet interface 311 and a liquid outlet interface 312 are provided on a side of the first side wall 310 away from the first chamber 111. The cooling structure includes a liquid cooling pipe, such as Figure 3 or Figure 5 As shown, both ends of the liquid cooling pipe are connected to the liquid inlet interface 311 and the liquid outlet interface 312 respectively.

[0050] The liquid inlet interface 311 is used to connect with the liquid delivery structure, and the liquid delivery structure can be the structure of the frequency conversion cabinet provided in the embodiment of the present application, or it can be an external structure, which is not limited here. In some examples, the liquid delivery structure can be a water pump or a faucet, etc. The liquid outlet interface 312 is used to connect with the liquid recovery structure, and the liquid recovery structure can be the structure of the frequency conversion cabinet provided in the embodiment of the present application, or it can be an external structure. In some examples, the liquid recovery structure can be a water tank or a pool, etc. The coolant enters the liquid cooling pipeline through the liquid inlet interface 311 through the liquid delivery structure, and the coolant flows along the liquid cooling pipeline. The coolant absorbs and takes away part of the heat in the box 300 during the flow of the liquid cooling pipeline, and the coolant finally flows to the liquid recovery structure through the liquid outlet interface 312. The liquid recovery structure and the liquid delivery structure can be connected by a connecting pipeline, so that the liquid delivery structure can re-deliver the coolant in the liquid recovery structure to the liquid cooling pipeline to realize the recycling of the coolant, which is conducive to saving resources. Since the first side wall 310 is located outside the second side wall, a liquid inlet interface 311 and a liquid outlet interface 312 are provided on the side of the first side wall 310 away from the first chamber 111, that is, the liquid inlet interface 311 and the liquid outlet interface 312 are both located outside the second side wall. This facilitates the connection between the liquid inlet interface 311 and the liquid delivery structure, and also facilitates the connection between the liquid outlet interface 312 and the liquid recovery structure. And since the liquid inlet interface 311 and the liquid outlet interface 312 are both provided on the first side wall 310, when the first side wall 310 of the box body 300 is installed at the installation port, the liquid inlet interface 311 and the liquid outlet interface 312 are both located on the same side of the cabinet 100. Such an arrangement can make the positions of the liquid delivery structure and the liquid recovery structure relatively close, and can relatively reduce the amount of the connecting pipe between the liquid output structure and the liquid recovery structure, thereby reducing the installation cost to a certain extent.

[0051] According to the above technical solution, by providing a liquid cooling pipe, the inverter 410 installed in the first chamber 111 is cooled by liquid cooling. The heat dissipation effect of the coolant in the liquid cooling pipe is not affected by the external humidity and dust density. Therefore, the liquid cooling heat dissipation method can not only reduce noise, but also have a better heat dissipation effect, which is conducive to improving the stability of the operation of the inverter 410. In addition, the liquid cooling pipe occupies a small space, which is conducive to the volume of the box body 300, thereby reducing the volume of the cabinet 100.

[0052] In one example, the liquid delivery structure is a water pump, and the liquid recovery structure is a water tank, and the coolant stored in the water tank. The water tank is connected to the water pump, and the water pump is used to deliver the coolant in the water tank to the liquid inlet interface 311, and allow the coolant to enter the liquid cooling pipeline through the liquid inlet interface 311, and the coolant flows along the liquid cooling pipeline, and finally flows back to the water tank through the liquid outlet interface 312. In the embodiment of the present application, the liquid inlet interface 311 and the water pump can be connected by a water pipe, and the liquid outlet interface 312 and the water tank can also be connected by a water pipe.

[0053] In some examples, the cooling structure may be a liquid cooling plate structure, that is, the cooling structure includes a plate body and a liquid cooling pipe, and the liquid cooling pipe is installed in the plate body. The plate body may be installed on the first side wall 310 or on other side walls of the box body 300.

[0054] In other embodiments, the cooling structure only includes a liquid cooling pipe. The liquid cooling pipe can be directly installed on the first side wall 310, or directly installed on other side walls of the box body 300. Exemplarily, the liquid cooling pipe is installed on the first side wall 310. In some examples, the liquid cooling pipe is installed on the side of the first side wall 310 facing the accommodating cavity, that is, the liquid cooling pipe can be located in the accommodating cavity, so that the coolant in the liquid cooling pipe can more fully absorb the heat in the accommodating cavity, and further improve the heat dissipation effect. In other examples, the liquid cooling pipe is installed inside the first side wall 310, that is, the first side wall 310 is a liquid cooling plate structure. Such a setting not only saves the space occupied by the liquid cooling pipe, but also can play a better protective role on the liquid cooling pipe, thereby improving the service life of the liquid cooling pipe, especially in a highly corrosive environment, the service life of the liquid cooling pipe is relatively stronger, thereby effectively reducing the maintenance cost of the liquid cooling pipe. Exemplarily, the first side wall 310 has an installation cavity, the liquid cooling pipe is located in the installation cavity, and the liquid cooling pipe is connected to the first side wall 310. In some optional embodiments, the liquid cooling pipe may be installed in the installation cavity in a serpentine shape.

[0055] In some optional embodiments, such as Figure 5 As shown, the liquid inlet interface 311 is located below the liquid outlet interface 312. The coolant enters the liquid cooling pipe through the liquid inlet interface 311 and flows along the liquid cooling pipe to the liquid outlet interface 312 above. The coolant finally flows out through the liquid outlet interface 312. Figure 5 In the figure, the direction indicated by the dotted arrow is the flow direction of the coolant.

[0056] In some optional examples, the first side wall 310 may be a square plate structure, a circular plate structure, or a plate structure of other shapes. Figure 3As shown, the first side wall 310 is a square plate structure, the liquid inlet interface 311 and the liquid outlet interface 312 are respectively located at two diagonal positions of the first side wall 310, and the liquid outlet is located above the liquid inlet.

[0057] In a possible design, the second chamber 112 surrounds at least a portion of the outer side of the first chamber 111. That is, the second chamber 112 may surround the periphery of the first chamber 111, or the second chamber 112 may be located only in a portion of the periphery of the first chamber 111. According to the above technical solution, it is beneficial for the various heating devices to be distributed on the periphery of the inverter 410, so that the various heating devices in the second chamber 112 are respectively connected to the inverter 410, and the structural compactness between the inverter 410 and the various heating devices can be improved to a certain extent, which is beneficial for reducing the volume of the cabinet 100, thereby reducing the space occupied by the inverter cabinet.

[0058] In some examples, the second chamber 112 surrounds the outer periphery of the first chamber 111. Exemplarily, the second chamber 112 may be a closed annular chamber, for example, the second chamber 112 is a "U"-shaped annular chamber. Alternatively, the second chamber 112 surrounds a partial area of ​​the outer periphery of the first chamber 111. The second chamber 112 may be an annular chamber with a notch, for example, the second chamber 112 is a "C"-shaped or "L"-shaped chamber.

[0059] In one possible design, Figure 2 As shown, the partition structure 200 includes a first partition plate 210 and a second partition plate 220 connected to each other, the first partition plate 210 and the second partition plate 220 are arranged at an angle, and the first partition plate 210 and the second partition plate 220 are respectively connected to the cabinet 100. The first partition plate 210 and the second partition plate 220 can be connected by welding, clamping, screwing or integral molding. According to the above technical solution, a plurality of heating devices can be divided into two groups, and a plurality of heating devices in one group are arranged at intervals along the length direction of the first partition plate 210, and a plurality of heating devices in the other group are arranged at intervals along the length direction of the second partition plate 220. In this arrangement, it is not necessary to arrange a plurality of heating devices at intervals along the same direction, thereby avoiding the cabinet 100 from being too long in a single direction, and reducing the space occupied by the cabinet 100 to a certain extent.

[0060] The first partition 210 and the second partition 220 can be arranged at various angles such as 80 degrees, 90 degrees, 97 degrees or 121 degrees. In some examples, the first partition 210 and the second partition 220 are arranged at a 90-degree angle. When the first partition 210 and the second partition are arranged at a 90-degree angle, the second chamber 112 is specifically an "L"-shaped chamber. In some examples, such as Figure 2As shown, the first partition 210 is arranged in the horizontal direction, the second partition 220 is arranged in the vertical direction, and the second partition 220 is connected to the right end of the first partition 210. The first partition 210 and the second partition 220 are respectively connected to the inner wall of the cabinet 100, thereby dividing the inner cavity 110 of the cabinet 100 into a first chamber 111 and a second chamber 112. Figure 2 In the direction shown, the first chamber 111 is located at the upper left of the cabinet 100, specifically above the first partition 210 and to the left of the second partition 220; part of the second chamber 112 is located below the first partition 210, and the other part is located to the right of the second partition 220.

[0061] In one possible design, Figure 2 As shown, the cabinet 100 is provided with a first vent 140 and a second vent 150, and the first vent 140 and the second vent 150 are respectively connected to the second chamber 112. According to the above technical solution, the first vent 140 and the second vent 150 are provided so that the second chamber 112 is connected to the outside of the cabinet 100. When the heating device in the second chamber 112 generates heat, the air in the second chamber 112 is heated and heated, so that the temperature of the air in the second chamber 112 forms a temperature difference with the temperature of the air outside the cabinet 100, so that the air in the second chamber 112 and the air outside the cabinet 100 form convection, and the outside cold air can enter the second chamber 112 through the first vent 140 or the second vent 150, and the original hot air in the second chamber 112 is discharged from the second vent 150 or the first vent 140, so that it is beneficial to dissipate the heat of the heating device in the second chamber 112, thereby further improving the heat dissipation effect of the frequency conversion cabinet. In the following description, it is assumed that the outside air enters the second chamber 112 through the first ventilation port 140 , and the air in the second chamber 112 is discharged to the outside through the second ventilation port 150 .

[0062] In some optional embodiments, at least one of the first vent 140 and the second vent 150 may be provided with an air supply structure, which may be a fan or other structure that can drive air flow. In some embodiments, fans are provided at the first vent 140 and the second vent 150, respectively. Exemplarily, the fan of the first vent 140 is used to blow cold air from the outside into the second chamber 112, and the fan of the second vent 150 is used to blow hot air from the second chamber 112 out to the outside of the cabinet 100. In this way, when the frequency conversion cabinet is applied to the frequency conversion equipment, it is beneficial to improve the heat dissipation effect of the heating device, so as to improve the stability of the operation of the frequency conversion equipment, and make the performance reliability of the entire frequency conversion equipment higher.

[0063] In some embodiments, the first vent 140 is composed of a plurality of small holes, and the second vent 150 is also composed of a plurality of small holes. Since the inner diameter of the small holes is small, dust or impurities can be reduced from entering the second chamber 112 to a certain extent while the second chamber 112 is connected to the outside.

[0064] In some examples, the top sidewall of the first vent 140 is located at a lower height than the top sidewall of the second vent 150. Since the air density decreases and floats after being heated, the top sidewall of the second vent 150 is located at a higher height than the top sidewall of the first vent 140, which is conducive to the discharge of hot air from the second vent 150, thereby facilitating air convection between the second chamber 112 and the outside world. In a specific example, Figure 2 As shown, the second chamber 112 is an "L"-shaped chamber, and the second chamber 112 includes a horizontal chamber and a vertical chamber, the horizontal chamber and the vertical chamber are arranged at an angle, and the horizontal chamber and the vertical chamber are connected to each other. Figure 2 In the direction shown, the horizontal chamber is located at the lower side of the first chamber 111, and the vertical chamber is at the right side of the first chamber 111. The second vent 150 includes a first area 151 and a second area 152. The first vent 140 is located at the left side of the horizontal chamber, the first area 151 is opposite to the first vent 140 and is located at the right side of the horizontal chamber, the second area 152 is located at the right side of the vertical chamber, and the second area 152 is located above the first vent 140 and the first area 151. In this way, the maximum distance between the first vent 140 and the second vent 150 can be increased, thereby increasing the flow path of the airflow, which is conducive to more sufficient heat dissipation and better heat dissipation effect. Moreover, it is beneficial for the hot air in the second chamber 112 to float up and then flow out from the second area 152, so that the air pressure in the second chamber 112 is reduced, and then the cold air from the outside is sucked in through the first vent 140 to form an airflow in the second chamber 112. The airflow flows from the first vent 140 toward the direction close to the first area 151 and the second area 152, so that the hot air in the second chamber 112 can flow out not only from the second area 152, but also from the first area 151. Figure 2 As shown, Figure 2 The direction indicated by the dashed arrow is the flow direction of the airflow in the second chamber 112. The provision of the first area 151 increases the air outlet area of ​​the second vent 150, which is beneficial to heat dissipation of the heat generating device.

[0065] In one possible design, Figure 4As shown, the cabinet 100 is provided with an opening 130, and a cabinet door 120 is installed at the opening 130, and the opening 130 is respectively connected to the first chamber 111 and the second chamber 112. The cabinet door 120 is used to open or close the opening 130 of the cabinet 100. According to the above technical scheme, by opening the cabinet door 120, the inverter 410 in the first chamber 111 and the heating device in the second chamber 112 can be inspected and maintained, and the maintenance operation is more convenient. In an embodiment of the present application, the opening 130 is specifically arranged on one side of the cabinet 100 in the horizontal direction. In some optional embodiments, the cabinet door 120 is provided with a plurality of vias 180, and each via 180 on the cabinet door 120 is respectively connected to the outside world and the second chamber 112. Such an arrangement can further improve the heat dissipation effect for the heating device.

[0066] In one possible design, Figure 3 As shown, the cabinet 100 has an inlet 160 and an outlet 170, and the outlet 170 is provided on the side of the cabinet 100 opposite to the opening 130. The inlet 160 is used for external cables to enter the cabinet 100 and connect with the inverter 410 and the heating device, and the outlet 170 is used to lead the cables in the cabinet 100 out and connect with external devices. According to the above technical solution, the outlet 170 is set on the side opposite to the opening 130. Since the opening 130 is set on one side of the cabinet 100 in the horizontal direction, the outlet 170 is set on the other side of the cabinet 100 in the horizontal direction. In this way, the operable space outside the outlet 170 is larger, which is conducive to the connection of the inverter 410 with external devices.

[0067] In the embodiment of the present application, the side of the cabinet 100 provided with the opening 130 is the front side, and the side of the cabinet 100 opposite to the opening 130 is the rear side. The outlet 170 is provided at the rear side of the cabinet 100, and the inlet 160 can be provided at the rear side of the cabinet 100, or the inlet 160 can also be provided at the top of the cabinet 100. The top operating space of the cabinet 100 is also large, which is conducive to introducing external cables into the first chamber 111 and the second chamber 112 of the cabinet 100 through the inlet 160. Optionally, the installation port can be provided at the rear side of the cabinet 100, that is, the first side wall 310 of the box body 300 and the liquid inlet interface 311 and the liquid outlet interface 312 on the first side wall 310 are all located at the rear side of the cabinet 100, so that it is conducive to the liquid inlet interface 311 to be connected with the liquid delivery structure, and the liquid outlet interface 312 to be connected with the liquid recovery structure.

[0068] In some embodiments, the frequency conversion cabinet further includes an input terminal 450 and an output terminal 460, wherein the input terminal 450 is provided with the above-mentioned line inlet 160, and the output terminal 460 is provided with the above-mentioned line outlet 170. The input terminal 450 is mounted on the top wall of the cabinet 100, and the output terminal 460 is mounted on the second chamber 112. A through hole is provided on the side wall of the rear side of the cabinet 100, and the line outlet 170 on the output terminal 460 is exposed by the through hole, so as to facilitate the connection of the output terminal 460 with an external device. When the frequency conversion cabinet is applied to a frequency conversion device, some external devices are connected to the frequency converter 410 through the line inlet 160 on the input terminal 450, and the frequency converter 410 is connected to other external devices through the line outlet 170 on the output terminal 460.

[0069] Another embodiment of the present application provides a frequency conversion device, including a frequency converter 410 and a frequency conversion cabinet provided by any of the above embodiments, wherein the frequency converter 410 is installed in the first chamber 111 of the frequency conversion cabinet. Since the frequency conversion device provided by the embodiment of the present application includes the frequency conversion cabinet provided by any of the above technical solutions, the frequency conversion device provided by the embodiment of the present application has at least all of the above beneficial effects, which will not be described in detail here.

[0070] In some optional embodiments, the frequency conversion device further includes a plurality of heating devices, the plurality of heating devices including an input unit 420, an output unit 420 and a control unit 440, the input unit 420, the output unit 430 and the control unit 440 are all installed in the second chamber 112. The input unit 420 includes at least one circuit protection structure, and the output unit 430 also includes at least one circuit protection structure, and the circuit protection structure can be a fuse, a thermal relay or a current relay. The circuit protection structure of the input unit 420 is respectively connected to the frequency converter 410 and the line inlet 160 of the input end 450, and the circuit protection structure of the output unit 430 is respectively connected to the frequency converter 410 and the line outlet 170 of the output end 460, so as to provide a better protection for the frequency converter 410. The frequency converter 410 is connected to the control unit 440, and the control unit 440 is used to connect with the user end signal to send the relevant information of the frequency converter 410 to the user end, so as to facilitate the user to query or monitor the operating status of the frequency converter 410.

[0071] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A frequency conversion cabinet, characterized in that: include: A cabinet having an inner cavity; A partition structure is installed in the inner cavity, and the partition structure divides the inner cavity into a first chamber and a second chamber, wherein the first chamber is used to install a frequency converter, and the second chamber is used to install a heating device; A cooling structure is installed in the first chamber.

2. The frequency conversion cabinet according to claim 1, characterized in that: The frequency conversion cabinet also includes a box body, which has a accommodating cavity, and the accommodating cavity is used to accommodate the frequency converter; the box body also has a first side wall; the cabinet is provided with an installation port, and the installation port is connected to the first chamber, and the side of the box body provided with the accommodating cavity is located in the first chamber, the first side wall covers the installation port, the area of ​​the first side wall is larger than the area of ​​the installation port, and the first side wall is detachably connected to the cabinet.

3. The frequency conversion cabinet according to claim 2, characterized in that: At least one side wall of the box body is provided with the cooling structure.

4. The frequency conversion cabinet according to claim 3, characterized in that: A liquid inlet interface and a liquid outlet interface are provided on a side of the first side wall away from the first chamber; the cooling structure includes a liquid cooling pipe, and both ends of the liquid cooling pipe are respectively connected to the liquid inlet interface and the liquid outlet interface.

5. The frequency conversion cabinet according to claim 1, characterized in that: The second chamber surrounds at least a portion of the outer area of ​​the first chamber.

6. The frequency conversion cabinet according to claim 5, characterized in that: The partition structure includes a first partition plate and a second partition plate that are connected to each other. The first partition plate and the second partition plate are arranged at an angle, and the first partition plate and the second partition plate are respectively connected to the cabinet.

7. The frequency conversion cabinet according to any one of claims 1 to 6, characterized in that: The cabinet is provided with a first vent and a second vent, and the first vent and the second vent are communicated with the second chamber respectively.

8. The frequency conversion cabinet according to any one of claims 1 to 6, characterized in that: The cabinet is provided with an opening, a cabinet door is installed at the opening, and the opening is communicated with the first chamber and the second chamber respectively.

9. The frequency conversion cabinet according to claim 8, characterized in that: The cabinet has a line inlet and a line outlet, and the line outlet is arranged on a side of the cabinet opposite to the opening.

10. A frequency conversion device, characterized in that: It comprises a frequency converter and a frequency converter cabinet as claimed in any one of claims 1 to 9, wherein the frequency converter is installed in a first chamber of the frequency converter cabinet.

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