Three-phase digital variable-frequency power supply air-cooling cooling assembly

Abstract

The utility model discloses a three-phase digital variable-frequency power supply air-cooled cooling assembly, which belongs to the technical field of heat dissipation, and structurally comprises an outer shell and a plurality of groups of mounting racks, a left side plate and a right side plate are respectively fixed on two side surfaces of the outer shell, a group of heat dissipation channels are respectively embedded and fixed on two sides of the left side plate and the right side plate, and each heat dissipation channel comprises two air inlet cylinders. The sides, located in the outer shell, of the air inlet barrels are fixedly provided with air suction covers, the other sides of the two air inlet barrels are fixedly communicated with an air guide barrel, one side of the air guide barrel is fixedly communicated with an air outlet barrel, a set of fans are fixedly installed on the inner side of the air outlet barrel, the two sides of the outer shell are each provided with a plurality of sets of air inlets, and a plurality of built-in air barrels are transversely fixed in the outer shell in a penetrating mode. According to the three-phase digital variable-frequency power supply air-cooling cooling assembly, the air inflow of cold air is improved, the surface flow velocity of each power module is basically kept consistent, the cold air flow can be blown to different side surfaces of the power modules from multiple angles, and the cooling and heat dissipation effects in the power supply are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, in particular to an air-cooling cooling component for a three-phase digital variable-frequency power supply. Background Art

[0002] The three-phase variable-frequency power supply is made in the MPWM mode, and the active element IGBT module is designed to make the capacity of this machine reach 200KVA. The input and output are isolated by a transformer to increase the stability of the whole machine. It is especially suitable for inductive, capacitive and special loads. The load test and life test have high reliability. The three-phase variable-frequency power supply is mainly composed of a rectification module, a drive module, an inversion module and a filtering module. During the operation of the variable-frequency power supply, various power modules need to dissipate heat in time to maintain stable operation. At present, the heat dissipation method of the variable-frequency power supply is basically to install an air bin in the power supply box for centralized cooling. The external cold air enters the air bin through different air inlets and is extracted by a fan after being aggregated. Although the overall heat dissipation effect is good, due to the different distances of each power module from the fan, the air flow on the surface of each power module is inconsistent, thus affecting the cooling of the whole battery. In addition, the air outlet position of the existing battery outer shell is single, and the cold air flow can only enter from one side of the power module and flow out from the other side, which limits the amount of cold air flow entering and the angle of cold air flow entering. Also, since the cold air is gradually heated during the horizontal flow process, the single-direction cold air flow and the insufficient intake of cold air will lead to the problem of poor air-cooling heat dissipation effect. Summary of the Utility Model

[0003] In order to solve the above deficiencies in the prior art, the purpose of the utility model is to provide an air-cooling cooling component for a three-phase digital variable-frequency power supply. The air-cooling cooling component for a three-phase digital variable-frequency power supply can increase the intake of cold air, make the surface flow velocity of each power module basically consistent, and enable the cold air flow to blow to different sides of the power module from multiple angles, improving the cooling and heat dissipation effect inside the power supply.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] An air-cooling cooling component for a three-phase digital variable-frequency power supply is provided, which includes a housing and several mounting brackets for installing and fixing power modules. Left and right side plates are respectively fixed on two side surfaces of the housing. A set of heat dissipation channels are embedded and fixed on both sides of the left and right side plates. The heat dissipation channels include two air inlet cylinders. An air suction hood is fixed on one side of the air inlet cylinder located inside the housing. The other sides of the two air inlet cylinders are fixedly communicated with a wind guide cylinder. One side of the wind guide cylinder is fixedly communicated with an air outlet cylinder. A set of fans are fixedly installed inside the air outlet cylinder.

[0006] A plurality of groups of air inlets are provided on both sides of the outer housing. A first filter net is fixedly installed at the port of the air inlet. A plurality of built-in air ducts are horizontally and fixedly penetrated in the outer housing. A plurality of ventilation slots are provided on both side surfaces of the built-in air duct, and second filter nets are fixedly installed at both inner ends of the built-in air duct.

[0007] Furthermore, each group of air inlets is located on both sides of a built-in air duct.

[0008] Furthermore, the mounting frame is fixed to the inner side of the outer housing, and each group of mounting frames is located at both bottom sides of a built-in air duct.

[0009] Furthermore, the ventilation slots are located between the two second filter nets, and the air suction hood is located on one side of the built-in air duct.

[0010] Furthermore, a partition plate is fixedly installed inside the air guide duct, and the partition plate is located on the horizontal axis of symmetry of the air outlet duct.

[0011] Furthermore, one end of the air inlet duct is fixedly penetrated through the left side plate and the right side plate, and the left side plate and the right side plate are both fixed to both sides of the outer housing by screws.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: For the air-cooling and temperature-reducing component of the three-phase digital variable-frequency power supply exemplified by the present utility model, through the setting of the heat dissipation channels, the air pressure on the inner sides of the two air inlet ducts can be made equal, and each air suction hood corresponds to a power module, so that the surface flow velocity of each power module is basically kept consistent, ensuring the stable temperature reduction of the entire battery. Through the position matching of the mounting frame and the built-in air duct, different power modules can be respectively installed and fixed on both sides of the built-in air duct. When the fans on the heat dissipation channels are started, the outside cold air can enter the inside of the outer housing through the ventilation slots and the two air inlets, so that the cold air flow can blow on different sides of the power module from multiple angles, and the cold air intake volume is large, improving the temperature reduction and heat dissipation effect inside the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more obvious:

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the heat dissipation channel of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the heat dissipation channel after being sectioned of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the outer housing of the present utility model;

[0018] Figure 5 It is a cross-sectional view of the built-in air duct of the present utility model.

[0019] In the figure, 1. outer housing, 2. left side plate, 3. right side plate, 4. screw, 5. heat dissipation channel, 51. air inlet duct, 52. air suction hood, 53. air guiding duct, 54. air outlet duct, 55. fan, 56. partition plate, 6. air inlet, 7. first filter screen, 8. built-in air duct, 9. mounting rack, 10. second filter screen, 11. ventilation slot. Specific embodiments

[0020] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0021] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0022] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Additionally, it should be noted that for ease of description, only the parts related to the utility model are shown in the drawings.

[0026] Embodiment: Refer to Figures 1-5 A three-phase digital variable-frequency power supply air-cooling component as shown, which includes a housing 1 and several groups of mounting brackets 9 for installing and fixing power modules. On both sides of the housing 1, a left side plate 2 and a right side plate 3 are respectively fixed. On both sides of the left side plate 2 and the right side plate 3, a set of heat dissipation channels 5 are embedded and fixed. The heat dissipation channels 5 include two air inlet tubes 51. On one side of the air inlet tube 51 located inside the housing 1, an air suction hood 52 is fixed. On the other side of the two air inlet tubes 51, they are fixedly connected to a wind guide tube 53. On one side of the wind guide tube 53, it is fixedly connected to an air outlet tube 54. Inside the air outlet tube 54, a set of fans 55 are fixedly installed.

[0027] On both sides of the housing 1, several groups of air inlets 6 are opened. At the port of the air inlet 6, a first filter screen 7 is fixedly installed. Horizontally and fixedly penetrating the inside of the housing 1 are several built-in air tubes 8. On both sides of the built-in air tube 8, several ventilation slots 11 are opened. And at both ends inside the built-in air tube 8, second filter screens 10 are fixed. Each group of air inlets 6 is located on both sides of a built-in air tube 8. The mounting brackets 9 are fixed inside the housing 1, and each group of mounting brackets 9 is located at both sides of the bottom of a built-in air tube 8. The ventilation slots 11 are located between the two second filter screens 10. The air suction hood 52 is located on one side of the built-in air tube 8.

[0028] On the mounting bracket 9, a mounting groove is opened. Through the mounting groove, each power module of the power supply is fixedly installed on the mounting bracket 9. Each power module of the variable-frequency power supply is respectively installed and fixed on both sides of the built-in air tube 8 through the mounting bracket 9. At this time, the back surface of the power module is located on one side of the ventilation slot 11. The two ends of the power module respectively correspond to the two air inlets 6. The front surface of the power module is located on one side of the air suction hood 52. When the power supply operates, the fans 55 on the heat dissipation channels 5 are started. The fans 55 can extract the hot air inside the housing 1. Since the two air inlet tubes 51 are connected in parallel through the wind guide tube 53, the same negative pressure will be formed inside the two air inlet tubes 51, so that the air suction amounts of the two air suction hoods 52 are the same. Since each air suction hood 52 corresponds to a power module, this can make the surface flow velocity of each power module basically consistent, ensuring the stable cooling of the entire battery.

[0029] During the entire heat dissipation process, the outside cold air enters the interior of the outer housing 1 from both sides through the air inlet 6 and blows towards the two side surfaces of the power module. At the same time, the outside cold air flow enters the interior of the built-in air duct 8 from both ends. When the cold air flows to the middle position of the built-in air duct 8, the cold air will be divided into two parts and blow towards the back surface of the power module through the ventilation slots 11. This can enable the cold air flow to blow towards different side surfaces of the power module at multiple angles, and increase the intake volume of the cold air, promoting the cooling and heat dissipation of the power supply. The first filter screen 7 and the second filter screen 10 play a role in filtering dust.

[0030] In order to form a stable and equal negative pressure inside the two air inlet ducts 51, in this embodiment, a partition plate 56 is fixed inside the air guide duct 53. The partition plate 56 is located on the horizontal symmetry axis of the air outlet duct 54. The partition plate 56 can divide the inner cavity of the air guide duct 53 into upper and lower parts. Through the blockage of the partition plate 56, the negative pressure formed inside the air outlet duct 54 is evenly distributed in the upper and lower chambers of the air guide duct 53.

[0031] Furthermore, in this embodiment, one end of the air inlet duct 51 is fixedly penetrated and fixed on the left side plate 2 and the right side plate 3. The left side plate 2 and the right side plate 3 are both fixed on both sides of the outer housing 1 by screws 4, which is convenient for disassembling and installing the left side plate 2 and the right side plate 3.

[0032] The above description is only the preferred embodiment of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

[0033] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art. To highlight the innovative features of the present utility model, the remaining technical features are not described herein again.

Claims

1. A three-phase digital variable-frequency power supply air-cooling and temperature-reducing component, comprising an outer housing (1) and several groups of mounting brackets (9) for mounting and fixing power modules, characterized in that, On both sides of the outer housing (1), a left side plate (2) and a right side plate (3) are respectively fixed. On both sides of the left side plate (2) and the right side plate (3), a set of heat dissipation channels (5) are embedded and fixed. The heat dissipation channel (5) includes two air inlet cylinders (51). On one side of the air inlet cylinder (51) located inside the outer housing (1), an air suction hood (52) is fixed. On the other side of the two air inlet cylinders (51), a wind guide cylinder (53) is fixedly connected. On one side of the wind guide cylinder (53), an air outlet cylinder (54) is fixedly connected. Inside the air outlet cylinder (54), a set of fans (55) are fixedly installed. On both sides of the outer housing (1), a number of air inlets (6) are provided. At the port of the air inlet (6), a first filter net (7) is fixedly installed. Inside the outer housing (1), a number of built-in air cylinders (8) are horizontally and fixedly penetrated. On both side surfaces of the built-in air cylinder (8), a number of ventilation slots (11) are provided, and at both ends of the inner side of the built-in air cylinder (8), second filter nets (10) are fixed.

2. The air-cooling component for the three-phase digital variable-frequency power supply according to claim 1, wherein Each air inlet (6) is located on both sides of a built-in air cylinder (8).

3. The air-cooling component for the three-phase digital variable-frequency power supply according to claim 2, wherein The mounting frame (9) is fixed inside the outer housing (1), and each mounting frame (9) is located at both bottom sides of a built-in air cylinder (8).

4. The air-cooling component for the three-phase digital variable-frequency power supply according to claim 3, characterized in that The ventilation slot (11) is located between the two second filter nets (10), and the air suction hood (52) is located on one side of the built-in air cylinder (8).

5. The air-cooling component for the three-phase digital variable-frequency power supply according to claim 4, characterized in that Inside the wind guide cylinder (53), a partition plate (56) is fixed. The partition plate (56) is located on the horizontal symmetry axis of the air outlet cylinder (54).

6. The air-cooling component of the three-phase digital variable-frequency power supply according to claim 5, characterized in that One end of the air inlet cylinder (51) is fixedly penetrated on the left side plate (2) and the right side plate (3), and the left side plate (2) and the right side plate (3) are both fixed on both sides of the outer housing (1) by screws (4).

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