A power cabinet

Abstract

This utility model discloses a power cabinet, including a sealed main power cabinet and a heat dissipation duct. The main power cabinet contains a first evaporator, a power module attached to the first evaporator, an inductor, a second evaporator positioned above the inductor, a capacitor, switching devices, and an internal fan. The heat dissipation duct contains an external circulation fan and a first condenser and a second condenser arranged in series. The main power cabinet and the heat dissipation duct are sealed and separated by structural components, with an angle between the second condenser and the vertical plane of the structural components. This power cabinet employs thermosiphon heat exchange technology and, through its structural layout, transfers heat from the main power cabinet to the heat dissipation duct, effectively reducing the heat inside the main power cabinet. Power modules and components with high protection requirements, such as capacitors and inductors, are placed inside the main power cabinet, completely isolated from the heat dissipation duct, achieving an IP65 protection rating and meeting the application requirements of high humidity and high salt spray scenarios. Simultaneously, the cabinet's footprint is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of power electronics heat dissipation technology, and in particular to a power cabinet. Background Technology

[0002] Currently, in the field of heat dissipation, thermosiphon radiators can utilize the latent heat of the working fluid to efficiently transfer heat from inside the cabinet to the external circulation duct, and are widely used in heat dissipation equipment. However, the commonly used cooling method for high-power electrical equipment is air cooling, which does not separate internal and external heat dissipation. This type of heat dissipation method allows external dust, salt spray, and other possible corrosive gases and other impurities to enter the cabinet, which cannot meet the application requirements of high humidity, high salt spray and other scenarios, and the space occupied by related power equipment is also too large. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a power cabinet that solves the problems that the air-cooled heat dissipation method of power equipment cannot meet the application requirements of high humidity, high salt spray and other scenarios, and that the power equipment occupies too much space.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] On one hand, this utility model provides a power cabinet, including a sealed power main cabinet and a heat dissipation duct. The power main cabinet is provided with a first evaporator, a power module attached to the first evaporator, an inductor, a second evaporator placed above the inductor, a capacitor, a switching device and an internal fan. The heat dissipation duct is provided with an external circulation fan and a first condenser and a second condenser arranged in series. The external circulation fan is located between the first condenser and the second condenser. The power main cabinet and the heat dissipation duct are sealed and separated by structural components.

[0006] Furthermore, the first evaporator and the first condenser are connected by pipes, and the second evaporator and the second condenser are connected by pipes, which are sealed by structural components.

[0007] Furthermore, the internal fan is located above the second evaporator, and the capacitor is located above the internal fan.

[0008] Furthermore, the heat dissipation duct is provided with a first air inlet, a second air inlet, and an air outlet. The air outlet is located at one end near the first condenser, and the second air inlet is located below the second condenser. The first air inlet is adjacent to the second air inlet and is located on the side of the second air inlet.

[0009] Furthermore, the first and second air inlets and outlets are equipped with dustproof cotton and louvers.

[0010] Furthermore, the power module is mounted on one or both sides of the first evaporator, the power module and the first evaporator are located at the top of the main power cabinet, the second evaporator is located above the inductor, and the capacitor is located on one side of the first evaporator.

[0011] Furthermore, the switching device includes a DC switch and an AC switch, with the DC switch positioned above the AC switch and below the power module, and the AC switch located on one side of the inductor.

[0012] Furthermore, the second condenser has an angle with the vertical plane of the structural member, the angle being less than 30 degrees.

[0013] Furthermore, an adjustable-size air vent is provided above the second condenser.

[0014] Furthermore, the first condenser and the second condenser are treated with salt spray resistant electrophoresis.

[0015] The advantages of this utility model compared with the prior art are:

[0016] A power cabinet includes a sealed main power cabinet and a heat dissipation duct. The main power cabinet contains a first evaporator, a power module attached to the first evaporator, an inductor, a second evaporator placed above the inductor, a capacitor, switching devices, and an internal fan. The heat dissipation duct contains an external circulation fan and a first condenser and a second condenser arranged in series. The main power cabinet and the heat dissipation duct are sealed and separated by a structural component. The second condenser and the vertical plane of the structural component form an angle.

[0017] This power cabinet uses thermosiphon heat exchange technology and relies on its structural layout to transfer heat from the main power cabinet to the heat dissipation duct, effectively reducing the heat inside the main power cabinet. Power modules and components with high protection requirements, such as capacitors and inductors, are placed inside the main power cabinet and completely isolated from the heat dissipation duct, achieving an IP65 protection level and meeting the application requirements of high humidity and high salt spray scenarios. At the same time, the cabinet's volume is also reduced.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A side cross-sectional schematic diagram of a power cabinet provided for a specific embodiment of this utility model;

[0021] Figure 2 A perspective axonometric schematic diagram of a power cabinet provided for a specific embodiment of this utility model;

[0022] Figure 3 This is a front cross-sectional view of a power cabinet provided for a specific embodiment of the present utility model.

[0023] Figure Labels

[0024] 100. Power main cabinet; 200. Heat dissipation duct; 201. First air inlet; 202. Second air inlet; 203. Air outlet; 301. Inductor; 302. Second evaporator; 303. Second condenser; 304. Air baffle; 401. AC switch; 402. DC switch; 500. Power module; 501. First evaporator; 502. First condenser; 601. Internal fan; 602. External circulation fan; 701. Capacitor; 801. Structural component. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] like Figure 1 - Figure 3As shown, this utility model discloses a power cabinet 100, including a sealed main power cabinet and a heat dissipation duct 200. The main power cabinet is provided with a first evaporator 501, a power module 500 attached to the first evaporator 501, an inductor 301, a second evaporator 302 placed above the inductor 301, a capacitor 701, a switching device and an internal fan 601. The heat dissipation duct 200 is provided with an external circulation fan 602 and a first condenser 502 and a second condenser 303 arranged in series. The main power cabinet and the heat dissipation duct 200 are sealed and separated by a structural member 801. The second condenser 303 and the vertical plane of the structural member 801 have an included angle.

[0032] The power cabinet 100 adopts thermosiphon heat exchange technology and relies on structural layout to transfer the heat inside the main power cabinet to the heat dissipation duct 200, effectively reducing the heat inside the main power cabinet. The power modules 500 and components such as capacitors 701 and inductors 301 with high protection requirements are placed inside the main power cabinet and completely isolated from the heat dissipation duct 200, which can achieve the IP65 protection level and meet the application requirements of high humidity and high salt spray scenarios. At the same time, the cabinet volume is also reduced.

[0033] In one embodiment, such as Figure 1 As shown, the first evaporator 501 and the first condenser 502, as well as the second evaporator 302 and the second condenser 303, are connected by pipes, and the pipes are sealed through structural component 801.

[0034] An external circulation fan 602 is located between the first condenser 502 and the second condenser 303, and an internal fan 601 is located above the second evaporator 302.

[0035] Specifically, the pipes are filled with phase change material to ensure that heat is transferred smoothly from the evaporator to the condenser.

[0036] Specifically, the heat dissipation duct 200 is L-shaped, and the external circulation fan 602 is located at the corner of the heat dissipation duct 200. The external circulation fan can drive the air to enter from the first and second air inlets and finally exhaust it from the air outlet 203.

[0037] In one embodiment, such as Figure 1 As shown, the heat dissipation duct 200 is provided with a first air inlet 201, a second air inlet 202 and an air outlet 203. The air outlet 203 is located at one end close to the first condenser 502, and the second air inlet 202 is located below the second condenser 303. The first air inlet 201 is adjacent to the second air inlet 202 and is located on the side of the second air inlet 202.

[0038] Furthermore, the first air inlet 201 is oriented vertically upward, the second air inlet 202 is oriented perpendicular to the plane where the structural component 801 is located, and the air outlet 203 is oriented vertically downward.

[0039] It should be noted that dustproof cotton and louvers are installed at the first air inlet 201, the second air inlet 202 and the air outlet 203 to effectively prevent dust and other debris from the external environment from entering the heat dissipation air duct 200.

[0040] In one embodiment, such as Figure 2 As shown, the power module 500 is mounted on the first evaporator 501 on one or both sides. The power module 500 and the first evaporator 501 are located at the top of the main power cabinet. The second evaporator 302 is located above the inductor 301. The capacitor 701 is located on one side of the first evaporator 501.

[0041] The switching device includes a DC switch 402 and an AC switch 401. The DC switch 402 is located above the AC switch 401 and below the power module 500. The AC switch 401 is located on one side of the inductor 301.

[0042] In one embodiment, such as Figure 1 As shown, the angle between the second condenser 303 and the vertical plane of the structural component 801 is less than 30 degrees. The inclined arrangement of the second condenser 303 can increase the air blowing area of ​​the second condenser 303, accelerate the heat dissipation speed, and improve the heat dissipation efficiency.

[0043] Specifically, an adjustable baffle 304 is provided above the second condenser 303 to regulate the airflow through the second condenser 303. When the airflow is too large, the baffle 304 is narrowed, and vice versa.

[0044] It should be noted that the first condenser 502 and the second condenser 303 are treated with salt spray resistant electrophoresis.

[0045] In one embodiment, the air inlet side and air outlet side of the first condenser 502 are interconnected and not separated by a partition, and the number of external circulation fans 602 can be adjusted according to actual conditions.

[0046] like Figure 3 As shown, the heat dissipation duct 200 is equipped with three first condensers 502 arranged side by side, and the power main cabinet is equipped with three first evaporators 501 arranged side by side, as well as two AC switches 401 and two DC switches 402 arranged side by side.

[0047] The heat dissipation principle and process of power cabinet 100 are as follows:

[0048] like Figure 1As shown, when the power cabinet 100 is working, heat is generated inside the main power cabinet. With the internal fan 601 working, part of the generated air is blown towards the DC switch 402 on the side, and then through the AC switch 401, inductor 301, and second evaporator 302 before reaching the internal fan 601 again; another part of the air is blown upward towards the capacitor 701, and after passing through the first evaporator 501 and power module 500, it flows into the air duct that blows towards the AC switch 401. The heat on the first evaporator 501 and the second evaporator 302 is transferred to the first condenser 502 and the second condenser 303 respectively through pipes. Within the heat dissipation duct 200, under the operation of the external circulation fan 602, the air blown in from the first air inlet 201 and the second air inlet 202 passes sequentially through the inclined second condenser 303, the wind deflector 304, the external circulation fan 602, and the first condenser 502 before being discharged from the air outlet 203, carrying away the heat inside the power cabinet 100, thereby achieving heat dissipation of the power cabinet 100.

[0049] This utility model discloses a power cabinet 100, including a sealed main power cabinet and a heat dissipation duct 200. The main power cabinet is provided with a first evaporator 501, a power module 500 attached to the first evaporator 501, an inductor 301, a second evaporator 302 placed above the inductor 301, a capacitor 701, a switching device, and an internal fan 601. The heat dissipation duct 200 is provided with an external circulation fan 602 and a first condenser 502 and a second condenser 303 arranged in series. The main power cabinet and the heat dissipation duct 200 are sealed and separated by a structural member 801. The second condenser 303 and the vertical plane of the structural member 801 have an included angle.

[0050] This power cabinet 100 adopts thermosiphon heat exchange technology and relies on structural layout to transfer heat from the main power cabinet to the heat dissipation duct 200, effectively reducing the heat inside the main power cabinet. The power modules 500, capacitors 701, inductors 301 and other devices with high protection requirements are placed inside the main power cabinet and completely isolated from the heat dissipation duct 200, which can achieve the IP65 protection level and meet the application requirements of high humidity and high salt spray scenarios. At the same time, the cabinet volume is also reduced.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A power cabinet characterized by, The device includes a sealed power cabinet and a heat dissipation duct. The power cabinet contains a first evaporator, a power module attached to the first evaporator, an inductor, a second evaporator placed above the inductor, a capacitor, switching devices, and an internal fan. The heat dissipation duct contains an external circulation fan and a first condenser and a second condenser arranged in series. The external circulation fan is located between the first condenser and the second condenser. The power cabinet and the heat dissipation duct are sealed and separated by structural components.

2. A power cabinet according to claim 1, characterized in that The first evaporator and the first condenser are connected by pipes, and the second evaporator and the second condenser are connected by pipes, which are sealed by structural components.

3. A power cabinet according to claim 1, characterized in that The internal fan is located above the second evaporator, and the capacitor is located above the internal fan.

4. The power cabinet of claim 1, wherein, The heat dissipation duct is provided with a first air inlet, a second air inlet and an air outlet. The air outlet is located at one end near the first condenser, and the second air inlet is located below the second condenser. The first air inlet is adjacent to the second air inlet and is located on the side of the second air inlet.

5. A power cabinet according to claim 4, characterised in that, The first and second air inlets and air outlets are equipped with dustproof cotton and louvers.

6. A power cabinet according to claim 1, wherein, The power module is mounted on one or both sides of the first evaporator. The power module and the first evaporator are located at the top of the main power cabinet. The second evaporator is located above the inductor. The capacitor is located on one side of the first evaporator.

7. A power cabinet according to claim 1, characterized in that, The switching device includes a DC switch and an AC switch. The DC switch is located above the AC switch and below the power module, and the AC switch is located on one side of the inductor.

8. A power cabinet according to claim 1, characterized in that, The second condenser has an angle with the vertical plane of the structure, and the angle is less than 30 degrees.

9. A power cabinet according to any one of claims 1-8, characterized in that, An adjustable-size air vent is provided above the second condenser.

10. A power cabinet according to claim 1, characterized in that, The first condenser and the second condenser are treated with salt spray resistant electrophoresis.

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