Converter cabinet with efficient heat dissipation

Abstract

The utility model relates to the technical field of converter cabinets, and provides a high-efficiency heat dissipation converter cabinet, which comprises a cabinet body, a power module, a PCB control panel, a switch and an inductor, and is characterized in that the interior of the cabinet body is divided into a first heat dissipation channel and a second heat dissipation channel by a partition plate; the power module is arranged in the first heat dissipation channel, and the PCB control board, the switch and the inductor are arranged in the second heat dissipation channel; air inlets and air outlets of the first heat dissipation channel and the second heat dissipation channel are arranged on a front door plate of the cabinet body. According to the high-efficiency heat dissipation converter cabinet provided by the utility model, the design of the front air inlet and the front air outlet meets the requirements of being placed reliable to a wall and supporting back-to-back placement, and the space utilization rate is improved.

Description

Technical Field

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

[0002] Chinese patent application number CN202220659532 discloses a heat dissipation structure of a hydrogen production power supply, a hydrogen production power supply and a hydrogen production system, which adopts two heat dissipation channels for heat dissipation. The first heat dissipation channel takes in air through the upper front and upper rear, passes through the module 101 and the inductor 102 in sequence, and then discharges air from the lower rear; the second heat dissipation channel takes in air from the upper rear center, passes through the control box 11 and the switch 12 in sequence, and then discharges air from the lower rear center.

[0003] shortcoming:

[0004] 1. Due to the rear air outlet mode, the equipment needs to reserve space behind the cabinet for heat dissipation, and the space utilization rate is low;

[0005] 2. Because the hot air discharged through the rear lower / rear middle lower air outlet in the cabinet will float up due to the heat and will be sucked into the rear upper / rear middle upper air inlet, causing the temperature in the cabinet to become higher and higher. In order to avoid hot air circulation, it is necessary to add exhaust ducts behind the cabinet for exhaust, which increases the amount of work, installation difficulty and cost.

[0006] 3. The first heat dissipation channel passes through the module 101 and the inductor 102 in sequence, which will cause the heat of the module to pass through the inductor, making the inductor have higher temperature tolerance requirements, larger volume, and higher cost.

[0007] Chinese patent application number CN202320027066 discloses a hydrogen production power supply converter cabinet and a hydrogen production power supply device, which adopts two heat dissipation channels for heat dissipation. The first heat dissipation channel takes in air through the front center, passes through the module, and then discharges air from the upper rear; the second heat dissipation channel takes in air from the lower front, passes through the AC switch and inductor in sequence, and then discharges air from the lower rear.

[0008] shortcoming:

[0009] 1. Due to the rear air outlet method, the equipment needs to reserve space behind the cabinet to dissipate heat. It cannot be placed against the wall, and the space utilization rate is low.

[0010] 2. They cannot be placed back to back. As the power density of power supplies increases, the spacious placement in the past, which required reserved space inside and behind the cabinet, is becoming more and more challenging. Placing two devices back to back has an increasingly strong demand for increasing space utilization.

[0011] 3. One fan performs rough cooling for multiple modules, and the heat dissipation conditions will be different. There will be obvious temperature differences between modules, which will affect the service life of the modules.

[0012] The above converter cabinet heat dissipation structure cannot be well applied due to its existing defects. Utility Model Content

[0013] In order to solve the deficiencies existing in the above-mentioned prior art, the utility model provides a converter cabinet with high efficiency in heat dissipation, comprising a cabinet body, a power module, a PCB control board, a switch, and an inductor. The interior of the cabinet body is divided into a first heat dissipation channel and a second heat dissipation channel by a partition; the power module is arranged in the first heat dissipation channel, and the PCB control board, the switch and the inductor are arranged in the second heat dissipation channel; the air inlet and the air outlet of the first heat dissipation channel and the second heat dissipation channel are both arranged on the front door panel of the cabinet body.

[0014] In one embodiment, the first heat dissipation channel is further provided with a fan module and an air duct module; the power module is arranged at the bottom of the air duct module, and the fan module is arranged at the top of the air duct module.

[0015] In one embodiment, the fan module includes a centrifugal fan, a fan module box, a fan module guide rail and a fan module fixing member; each centrifugal fan is installed in the fan module box, the fan module guide rail is vertically arranged around the inner wall of the cabinet, and the fan module box can be removably installed on the fan module guide rail through the fan module fixing member.

[0016] In one embodiment, the number of centrifugal fans is two, namely a first centrifugal fan and a second centrifugal fan; a partition plate is used to separate the interior of the fan module box into a first installation area and a second installation area for installing the centrifugal fans; the first centrifugal fan is installed in the first installation area to form a first centrifugal fan area, and the second centrifugal fan is installed in the second installation area to form a second centrifugal fan area.

[0017] In one embodiment, the air duct module includes an air duct module box body, the air duct module box body includes a front partition, a rear partition, a left partition, a right partition and a middle partition, the middle partition is connected to the front partition and the rear partition, and is arranged parallel to the left partition and the right partition; a first partition ventilation area is formed between the left partition and the middle partition, and the first partition ventilation area is provided with a left middle partition; a second partition ventilation area is formed between the right partition and the middle partition, and the second partition ventilation area is provided with a right middle partition, the left middle partition and the right middle partition are arranged perpendicular to the middle partition, and are arranged at a preset angle to the front partition.

[0018] In one embodiment, the duct module also includes a duct module guide rail and a duct module fixing member. The duct module guide rail is vertically arranged around the inner wall of the cabinet, and the fan module fixing member is installed on the side wall of the duct module box body. The duct module box body can be removably installed on the duct module guide rail through the duct module fixing member.

[0019] In one embodiment, the first heat dissipation channel is installed with two power modules, namely the first power module and the second power module, and the first heat dissipation channel is divided into a first power module heat dissipation area and a second power module heat dissipation area; the first power module heat dissipation area is sequentially provided with a first power module, a first partition ventilation area and a first centrifugal fan area along the wind flow direction; the second power module heat dissipation area is sequentially provided with a second power module, a second partition ventilation area and a second centrifugal fan area along the wind flow direction.

[0020] In one embodiment, the second heat dissipation channel is further provided with an axial flow fan, and a PCB control board, a switch, an inductor, and an axial flow fan are sequentially arranged inside the second heat dissipation channel along the wind flow direction.

[0021] In one embodiment, the number of the axial flow fan is one.

[0022] In one embodiment, the number of the axial flow fans is two.

[0023] Based on the above, compared with the prior art, the utility model provides a converter cabinet with efficient heat dissipation, and the design of the front air inlet and the front air outlet meets the requirements of being placed against the wall and supporting back-to-back placement, thereby improving space utilization.

[0024] Other features and beneficial effects of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other beneficial effects of the utility model can be achieved and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions of the components shown in the diagrams unless otherwise specified.

[0026] Figure 1 This is a left view of the converter cabinet with high efficiency heat dissipation provided by the utility model;

[0027] Figure 2 A schematic diagram of the air inlet and outlet structure of the converter cabinet with high efficiency heat dissipation provided by the utility model;

[0028] Figure 3 A front view of a converter cabinet with high efficiency heat dissipation provided by the utility model;

[0029] Figure 4A front view of a converter cabinet with high efficiency heat dissipation provided by the utility model with its front door panel opened;

[0030] Figure 5 A front view of the converter cabinet with efficient heat dissipation provided by the utility model with the front door panel opened and the PCB control panel removed;

[0031] Figure 6 A rear view of the converter cabinet with high efficiency heat dissipation provided by the utility model with its rear door panel opened;

[0032] Figure 7 A schematic diagram of the structure of the first heat dissipation channel of the converter cabinet with high efficiency heat dissipation provided by the utility model;

[0033] Figure 8 A schematic diagram of the structure of the air duct module provided by the utility model;

[0034] Fig. 9 A schematic diagram of the structure of a fan module with high efficiency heat dissipation provided by the utility model;

[0035] Fig.10 A schematic diagram of the structure of the heat dissipation of the first power module with high efficiency heat dissipation provided by the utility model;

[0036] Fig.11 A schematic diagram of the structure of heat dissipation of the second power module of the converter cabinet with high efficiency heat dissipation provided by the utility model;

[0037] Fig.12 The left side view of the converter cabinet with high efficiency heat dissipation provided by the utility model has two rotating shaft fans;

[0038] Fig.13 This is a schematic structural diagram of the second heat dissipation channel of the converter cabinet with high-efficiency heat dissipation provided by the utility model.

[0039] Reference numerals:

[0040] DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; the technical features designed in different implementation modes of the utility model described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in 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.

[0042] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and cannot be understood as limitations on the present invention; it should be further understood that the terms used in the present invention should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this utility model.

[0043] The utility model provides a converter cabinet with high efficiency heat dissipation, such as Figure 1 As shown, the cabinet 10 includes a power module 50, a PCB control board 20, a switch 30, and an inductor 40. The interior of the cabinet 10 is divided into a first heat dissipation channel 11 and a second heat dissipation channel 12 by a partition 15. The power module 50 is arranged in the first heat dissipation channel 11, and the PCB control board 20, the switch 30 and the inductor 40 are arranged in the second heat dissipation channel 12; Figure 2 As shown, the air inlet 13 and the air outlet 14 of the first heat dissipation channel 11 and the second heat dissipation channel 12 are both arranged on the front door plate of the cabinet 10 .

[0044] When implementing it, Figure 3 , 7 As shown in Figures 1 and 13, the air inlet and outlet 14 of the converter cabinet is arranged on the front door panel of the cabinet body 10, and the front door panel is provided with a first air inlet 131, a second air inlet 132 and an air outlet 14, wherein the first air inlet 131 is the air inlet of the first heat dissipation channel 11, and the second air inlet 132 is the air inlet of the second heat dissipation channel 12, and the two are arranged separately. Preferably, the first heat dissipation channel 11 and the second heat dissipation channel 12 share one air outlet 14. The arrow in the figure shows the flow direction of the cooling air.

[0045] like Figures 3 to 6 As shown, the converter cabinet is composed of three groups of separate cabinets 10, each cabinet 10 includes 3 fan modules 60, 3 air duct modules 70, 3 first power modules 51, 3 second power modules 52, 3 PCB control boards 20, 2 switches 30, 2 inductors 40, and 12 or 6 axial flow fans 80. The cabinet 10 is divided into a first heat dissipation channel 11 and a second heat dissipation channel 12 by a partition 15, and the 3 first power modules 51 and the 3 second power modules 52, the 3 fan modules 60 and the 3 air duct modules 70 are installed in the first heat dissipation channel 11; wherein the power module 50 is arranged at the bottom of the air duct module 70 and fixed to the side wall of the cabinet 10; and the fan module 60 is arranged at the top of the air duct module 70. The 3 PCB control boards 20, 2 switches 30, 2 inductors 40, and 12 or 6 axial flow fans 80 are installed in the second heat dissipation channel 12.

[0046] In one embodiment, if Figure 4 and Figure 5 As shown, the fan module 60 includes a centrifugal fan 61, a fan module box 62, a fan module guide rail 63 and a fan module fixing member 64; each centrifugal fan 61 is installed in the fan module box 62, the fan module guide rail 63 is vertically arranged around the inner wall of the cabinet 10, and the fan module box 62 is detachably installed on the fan module guide rail 63 through the fan module fixing member 64. Through the cooperation of the duct module guide rail 72 and the duct module fixing member 73, the duct module box 71 is conveniently detachably installed in the first heat dissipation channel 11, which is convenient for later maintenance.

[0047] In one embodiment, if Figure 7 and Figure 8 As shown, the number of centrifugal fans 61 is two, namely the first centrifugal fan 611 and the second centrifugal fan 612; the interior of the fan module box body 62 is divided into a first installation area 621 and a second installation area 622 by a partition plate 623 to install the centrifugal fans 61; the first centrifugal fan 611 is installed in the first installation area 621 to form a first centrifugal fan area 611a, and the second centrifugal fan 612 is installed in the second installation area 622 to form a second centrifugal fan area 612a.

[0048] Specifically, each cabinet 10 has two power modules and two centrifugal fans 61. The three groups of cabinets 10 have a total of six power modules and six centrifugal fans 61. The six centrifugal fans 61 cool the six modules individually. Each power module will receive the same air volume and heat dissipation, so that the temperature uniformity between modules is good.

[0049] In one embodiment, if Fig. 9 As shown, the air duct module 70 includes an air duct module box body 71, and the air duct module box body 71 includes a front partition 711, a rear partition 712, a left partition 713, a right partition 714 and a middle partition 715. The middle partition 715 is connected to the front partition 711 and the rear partition 712, and is arranged parallel to the left partition 713 and the right partition 714; a first partition ventilation area 717 is formed between the left partition 713 and the middle partition 715, and the first partition ventilation area 717 is provided with a left middle partition 716; a second partition ventilation area 719 is formed between the right partition 714 and the middle partition 715, and the second partition ventilation area 719 is provided with a right middle partition 718, and the left middle partition 716 and the right middle partition 718 are arranged perpendicular to the middle partition 715, and are arranged at a preset angle to the front partition 711.

[0050] Specifically, the air duct module 70 divides the air duct into left and right sides through the middle partition 715; the front partition 711, the rear partition 712, and the left middle partition 716 divide the wind into front and rear parts. Considering the wind resistance of the air duct, the front and rear positions of the left middle partition 716 can be adjusted to achieve different adjustments of the air volume of the front and rear air ducts, thereby adjusting the internal temperature of the module and adjusting the internal temperature uniformity of the module. The front partition 711, the rear partition 712, and the right middle partition 718 divide the wind into front and rear parts. Considering the wind resistance of the air duct, the front and rear positions of the right middle partition 718 can be adjusted to achieve different adjustments of the air volume of the front and rear air ducts, thereby adjusting the internal temperature of the module and adjusting the internal temperature uniformity of the module.

[0051] In one embodiment, the air duct module 70 further includes an air duct module guide rail 72 and an air duct module fixing member 73. The air duct module guide rail 72 is vertically arranged around the inner wall of the cabinet 10. The fan module fixing member 64 is installed on the side wall of the air duct module box body 71. The air duct module box body 71 is detachably installed on the air duct module guide rail 72 through the air duct module fixing member 73. Through the cooperation of the air duct module guide rail 72 and the air duct module fixing member 73, the air duct module box body 71 can be detachably installed on the first heat dissipation channel 11, which is convenient for later maintenance.

[0052] In one embodiment, if Figure 7 , 10 As shown in Figures 11, the first heat dissipation channel 11 is installed with two power modules 50, namely the first power module 51 and the second power module 52, and the first heat dissipation channel 11 is divided into a first power module heat dissipation area 111 and a second power module heat dissipation area 121; the first power module heat dissipation area 111 is sequentially provided with the first power module 51, the first partition ventilation area 717 and the first centrifugal fan area 611a along the wind flow direction; the second power module heat dissipation area 121 is sequentially provided with the second power module 52, the second partition ventilation area 719 and the second centrifugal fan area 612a along the wind flow direction.

[0053] Specifically, the first power module heat dissipation area 111 dissipates heat in and out of the air, such as Fig.10 As shown, cold air enters from the front door panel, passes through the first power module 51, takes away the heat of the first power module 51, and then enters and passes through the first partition ventilation area 717, wherein the first partition ventilation area 717 is composed of the front partition 711, the rear partition 712 and the left middle partition 716, and then the heat is discharged through the first centrifugal fan 611 in the first centrifugal fan area 611a.

[0054] The second power module heat dissipation area 121 dissipates heat through the air inlet and outlet, such as Fig.11As shown, cold air enters from the front door panel, passes through the second power module 52, takes away the heat of the second power module 52, and then enters and passes through the second partition ventilation area 719, wherein the second partition ventilation area 719 is composed of the front partition 711, the rear partition 712, and the right middle partition 718, and then the heat is discharged through the second centrifugal fan 612 in the second centrifugal fan area 612a.

[0055] In one embodiment, if Figure 6 and Fig.12 As shown, the second heat dissipation channel 12 is also provided with an axial flow fan 80, and the PCB control board 20, the switch 30, the inductor 40, and the axial flow fan 80 are sequentially arranged inside the second heat dissipation channel along the wind direction.

[0056] Preferably, if Fig.12 and Fig.13 As shown, the number of axial flow fans 80 is one, or it can be two. The specific number is evaluated based on the risk control and comprehensive cost of the converter cabinet. If the number of axial flow fans 80 is one, the axial flow fan 80 is large in size, the installation space is large, and the comprehensive cost is high, but the axial flow fan 80 fan power supply feedback line will be reduced by half, which can greatly reduce the failure rate of the AC cabinet. If the number of axial flow fans 80 is two, a smaller axial flow fan 80 is required, so the required installation space is small and the comprehensive cost is low, but the axial flow fan 80 has more power supply feedback lines and the failure rate increases.

[0057] When implementing it, Figure 2 and Fig.13 As shown, the second heat dissipation channel 12 takes in air from the air inlet 13 at the lower part of the front door of the cabinet 10, passes through the low-heat components such as the PCB control board 20, the switch 30, and then passes through the high-heat components such as the inductor 40, and then passes through the axial fan 80, after one or two transfers, and then discharges air through the air outlet 14 at the upper part of the front door of the cabinet 10. Preferably, the airflow in the second heat dissipation channel 12 first passes through the low-heat components and then passes through the high-heat components, which ensures full utilization of the cooling air and meets the different heat dissipation requirements of the components in the cabinet.

[0058] In summary, compared with the prior art, the utility model provides a high-efficiency heat dissipation converter cabinet, which has the following technical advantages:

[0059] The design of the front air inlet 13 and the front air outlet 14 can meet the requirements of being placed against the wall and supporting back-to-back placement, thereby improving space utilization. To meet this requirement, the equipment needs to be designed to have air flow in the front and air out the front. The second heat dissipation channel 12 contains different high-heat and low-heat devices, and the low-heat devices are arranged in the front and the high-heat devices are arranged in the back to meet the different heat dissipation requirements of the devices in the cabinet. The functional module 50 is finely dissipated, and each functional module 50 is provided with an independent heat dissipation channel for uniform temperature control, so that the temperature is more uniform, that is, the six centrifugal fans 61 independently dissipate heat for the six functional modules 50 without interfering with each other. Considering the wind resistance of the air duct in the cabinet, the air duct module 70 is provided to further control the uniform temperature inside the functional module 50. 4. Both the fan module 60 and the air duct module 70 adopt a detachable modular design to facilitate installation and later maintenance.

[0060] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the utility model can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0061] Although this article uses more terms such as cabinet, first heat dissipation channel, first power module heat dissipation area, second heat dissipation channel, second power module heat dissipation area, air inlet, air outlet, PCB control board, switch, inductor, power module, first power module, second power module, fan module, centrifugal fan, first centrifugal fan, first centrifugal fan area, second centrifugal fan, second centrifugal fan area, fan module box, first installation area, second installation area, fan module guide rail, fan module fixing, duct module, duct module box, front partition, rear partition, left partition, right partition, middle partition, left middle partition, first partition ventilation area, right middle partition second partition ventilation area, duct module guide rail and duct module fixing, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A converter cabinet with high efficiency heat dissipation, characterized by: It includes a cabinet, a power module, a PCB control board, a switch, and an inductor, wherein the interior of the cabinet is divided into a first heat dissipation channel and a second heat dissipation channel by a partition; The power module is arranged in the first heat dissipation channel, and the PCB control board, the switch and the inductor are arranged in the second heat dissipation channel; the air inlet and the air outlet of the first heat dissipation channel and the second heat dissipation channel are both arranged on the front door panel of the cabinet.

2. The converter cabinet with high heat dissipation efficiency according to claim 1 is characterized in that: The first heat dissipation channel is further provided with a fan module and an air duct module; the power module is arranged at the bottom of the air duct module, and the fan module is arranged at the top of the air duct module.

3. The converter cabinet with high efficiency heat dissipation according to claim 2 is characterized in that: The fan module includes a centrifugal fan, a fan module box, a fan module guide rail and a fan module fixing piece; each centrifugal fan is installed in the fan module box, the fan module guide rail is vertically arranged around the inner wall of the cabinet, and the fan module box can be detachably installed on the fan module guide rail through the fan module fixing piece.

4. The converter cabinet with high heat dissipation efficiency according to claim 3 is characterized in that: There are two centrifugal fans, namely the first centrifugal fan and the second centrifugal fan; the interior of the fan module box is divided into a first installation area and a second installation area by a partition plate to install the centrifugal fans; the first centrifugal fan is installed in the first installation area to form a first centrifugal fan area, and the second centrifugal fan is installed in the second installation area to form a second centrifugal fan area.

5. The converter cabinet with high efficiency heat dissipation according to claim 4 is characterized in that: The air duct module comprises an air duct module box body, the air duct module box body comprises a front partition, a rear partition, a left partition, a right partition and a middle partition, the middle partition is connected to the front partition and the rear partition, and is arranged parallel to the left partition and the right partition; A first partition ventilation area is formed between the left partition and the middle partition, and a left middle partition is provided in the first partition ventilation area; a second partition ventilation area is formed between the right partition and the middle partition, and a right middle partition is provided in the second partition ventilation area, and the left middle partition and the right middle partition are perpendicular to the middle partition and are arranged at a preset angle to the front partition.

6. The converter cabinet with high efficiency heat dissipation according to claim 5 is characterized in that: The air duct module also includes an air duct module guide rail and an air duct module fixing piece. The air duct module guide rail is vertically arranged around the inner wall of the cabinet, and the fan module fixing piece is installed on the side wall of the air duct module box body. The air duct module box body can be detachably installed on the air duct module guide rail through the air duct module fixing piece.

7. The converter cabinet with high efficiency heat dissipation according to claim 4 is characterized in that: The first heat dissipation channel is installed with two power modules, namely a first power module and a second power module, and the first heat dissipation channel is divided into a first power module heat dissipation area and a second power module heat dissipation area; The first power module heat dissipation area is provided with a first power module, a first baffle ventilation area and a first centrifugal fan area in sequence along the wind direction; the second power module heat dissipation area is provided with a second power module, a second baffle ventilation area and a second centrifugal fan area in sequence along the wind direction.

8. The converter cabinet with high efficiency heat dissipation according to claim 1 is characterized in that: The second heat dissipation channel is also provided with an axial flow fan, and the PCB control board, the switch, the inductor, and the axial flow fan are arranged in sequence along the wind flow direction inside the second heat dissipation channel.

9. The converter cabinet with high heat dissipation efficiency according to claim 8, characterized in that: The number of the axial flow fan is one.

10. The converter cabinet with high efficiency heat dissipation according to claim 8, characterized in that: The number of the axial flow fans is two.

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