High-power servo drive cabinet

Abstract

The invention relates to the field of improvement of cooling / ventilation of electric equipment, in particular to a high-power servo drive cabinet. The high-power servo drive cabinet is used for solving the problems that an existing distribution box is complex in structure and high in cost in order to achieve the dustproof purpose when a driver is cooled. The high-power servo drive cabinet comprises a cabinet body, a servo driver is arranged in the cabinet body, an installation cavity and a heat dissipation cavity are formed in a shell of the servo driver, a power element is installed in the installation cavity, a heat dissipation piece used for conducting heat dissipation on the power element is arranged in the heat dissipation cavity, and the heat dissipation cavity is provided with an air inlet and an air outlet. The air outlet of the heat dissipation cavity is provided with an air guide channel, and the air guide channel is communicated with the outside of the cabinet. Thus, the air guide channel only conducts the outside of the cabinet and the heat dissipation cavity of the servo driver, even if dust and impurities exist, the dust and the impurities cannot enter the installation cavity for installing the power element, heat dissipation and dust prevention of the power element are achieved, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The invention relates to the field of improvement of cooling / ventilation of electric equipment, and in particular to a high-power servo drive cabinet. Background Art

[0002] The servo drive cabinet is the control center that directs the reasonable distribution of electric energy among various components in the power supply line. It is the key to reliably accept the upper power supply and correctly feedback the load electric energy. The servo drive is an important part of the servo drive cabinet. During use, the operating conditions of the servo drive are complex and prone to heat. Therefore, a heat dissipation structure is required to dissipate the heat of the servo drive to ensure the working efficiency and service life of the servo drive.

[0003] The Chinese utility model patent with the authorization announcement number CN219554366U discloses an air duct in an electric box, wherein the air duct in the electric box includes a distribution box, a motor driver is installed in the distribution box, and an air duct cylinder is arranged at the air outlet of the motor driver, and the air duct cylinder extends to the outside of the distribution box. When the motor driver is working and generates high temperature, the high-temperature air can be discharged to the outside of the distribution box through the air duct cylinder to avoid causing high temperature inside the distribution box, thereby improving the heat dissipation capacity of the distribution box. However, power components such as IGBT or rectifier bridge are arranged inside the motor driver, and the motor driver is connected to the outside through the air duct cylinder. In this way, impurities such as external dust may enter the power components in the motor driver through the air duct cylinder. The power components have a complex structure, and dust falls on them and is difficult to clean. Therefore, in order to avoid the entry of dust, a dustproof mechanism is arranged on the side of the air duct cylinder located outside the box, so that the air duct cylinder must extend a certain height from the top wall of the distribution box, thereby increasing the height of the entire distribution box. Furthermore, the dust-proof mechanism includes a flip plate. When the motor driver is working, the control system in the distribution box controls the flip plate to guide the air duct tube and the outside air; when the motor driver is not working, the flip plate is closed to prevent impurities from entering the power components of the motor driver from the air duct tube. Such a structure is relatively complex, and a control element needs to be installed to control the closing of the dust-proof mechanism, which increases the manufacturing cost. Summary of the invention

[0004] The object of the present invention is to provide a high-power servo drive cabinet to solve the problem that the existing distribution box has a complex structure and high cost in order to achieve the purpose of dust prevention when dissipating heat for the driver.

[0005] In order to solve the above technical problems, the high-power servo drive cabinet of the present invention adopts the following technical solutions:

[0006] A high-power servo drive cabinet comprises a cabinet body, a servo driver is arranged in the cabinet body, the servo driver comprises a shell, the shell has an installation cavity and a heat dissipation cavity, a power element is installed in the installation cavity, a heat dissipation member for dissipating heat from the power element is arranged in the heat dissipation cavity, the heat dissipation cavity has a heat dissipation cavity air inlet and a heat dissipation cavity air outlet, an air guide channel is arranged at the heat dissipation cavity air outlet, and the air guide channel is communicated with the outside of the cabinet.

[0007] The present invention proposes a brand-new technical solution, in which a heat sink capable of conducting heat to the power element is installed in the servo drive, the power element and the heat sink of the servo drive are separated in different compartments by a partition, and an air guide channel connected to the outside of the cabinet is provided at the air outlet of the compartment on one side of the heat sink. In this way, the air guide channel only connects the heat dissipation cavity outside the cabinet with the servo drive, and even if there are dust impurities, they cannot enter the installation cavity where the power element is installed. While achieving heat dissipation and dust prevention for the power element, the structure is simple and the cost is low.

[0008] Furthermore, the heat dissipation cavity extends up and down, the heat dissipation cavity air outlet is located at the upper end, and the air guide channel extends to the top wall of the cabinet, and the top wall of the cabinet is provided with air holes that cooperate with the air guide channel.

[0009] Furthermore, a dustproof net is provided at the air hole.

[0010] Furthermore, a folded edge is provided at the end of the air guide channel and is connected to the lower side surface of the top wall via the folded edge, and the dustproof net is connected to the upper side surface of the top wall.

[0011] Furthermore, an air intake fan is provided at the air inlet of the heat dissipation cavity.

[0012] Furthermore, the installation cavity has an installation cavity air inlet and an installation cavity air outlet, and a heat dissipation fan is provided at the installation cavity air inlet.

[0013] Furthermore, the installation cavity extends up and down, and the air outlet of the installation cavity is located at the upper end.

[0014] Furthermore, the servo driver is fixedly connected to the rear side wall of the cabinet through a shell, the installation cavity and the heat dissipation cavity are arranged one after the other, and the air guide channel is inclined forward from bottom to top.

[0015] Furthermore, the shell is cylindrical, and a fin-type heat sink is installed in the cylindrical shell. The fin-type heat sink includes a heat transfer base plate and heat dissipation fins on a side surface of the heat transfer base plate. The heat transfer base plate is fixed in the shell along the axial direction of the cylindrical shell to divide the inner cavity of the shell into the installation cavity and the heat dissipation cavity. The heat dissipation fins constitute the heat dissipation element, and the power element is installed on the other side surface of the heat transfer base plate.

[0016] Furthermore, a heat pipe is provided in the heat transfer bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a high-power drive cabinet of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0019] Figure 3 for Figure 1 A top view of

[0020] Figure 4 A schematic diagram of a structure in which an air guide channel is provided at the air outlet of the heat dissipation cavity of a servo drive;

[0021] Figure 5 It is a structural schematic diagram of the air guide channel;

[0022] Figure 6 It is a structural diagram of the servo drive;

[0023] Figure 7 It is a schematic diagram of the internal structure of the servo drive;

[0024] Figure 8 for Figure 7 Bottom view of

[0025] Fig. 9 It is a schematic diagram of the structure in which the heat pipe is arranged in the heat transfer bottom plate.

[0026] In the figure: 1. air guide channel; 2. folded edge; 3. servo drive; 4. cabinet; 5. air intake fan; 6. IGBT; 7. rectifier bridge; 8. heat sink fin; 9. heat pipe; 10. dust screen; 11. installation cavity; 12. heat sink cavity; 13. heat transfer bottom plate; 14. heat sink fan; DETAILED DESCRIPTION

[0027] The present invention proposes a new technical solution to the problems existing in the above technical solutions. The core concept of the present invention is: an installation cavity and a heat dissipation cavity are set in the servo drive housing, the installation cavity is used to install the power element, the heat dissipation cavity is used to install the heat dissipation member for dissipating the power element, and an air guide channel connected to the outside of the cabinet is set at the air outlet of the heat dissipation cavity. In this way, the air guide channel only connects the outside of the cabinet with the heat dissipation cavity of the servo drive, and even if there are dust and impurities, they cannot enter the installation cavity for installing the power element. While achieving heat dissipation and dust prevention for the power element, the structure is simple and the cost is low.

[0028] Based on the above invention concept, the basic scheme of a high-power servo drive cabinet of the present invention is as follows:

[0029] High power servo drive cabinet includes: Figure 1 The cabinet 4 shown in the figure has a structure as follows: Figure 2The servo drive 3 shown in the figure comprises a housing having a Figure 6 The installation cavity 11 and the heat dissipation cavity 12 are shown, and the installation cavity 11 is equipped with a power component, and the power component is as follows Figure 7 The IGBT6 (insulated gate bipolar transistor) and the rectifier bridge 7 shown in the figure are provided with a heat sink for dissipating heat from the power components in the heat dissipation cavity. The heat dissipation cavity 12 has a heat dissipation cavity air inlet and a heat dissipation cavity air outlet. Figure 1 The air guide channel 1 shown is connected to the outside of the cabinet. In this way, the heat sink can dissipate heat for the power components, and the heat can be transferred to the outside of the cabinet through the air guide channel 1, meeting the heat dissipation requirements of the servo drive cabinet. At the same time, in this way, the air guide channel only connects the outside of the cabinet with the heat dissipation cavity 12 of the servo drive, and even if there are dust impurities, they cannot enter the installation cavity 11 where the power components are installed. While achieving heat dissipation and dust prevention for the power components, the structure is simple and the cost is low.

[0030] In this embodiment, the heat dissipation cavity 12 extends up and down, the air outlet of the heat dissipation cavity 12 is at the upper end, and the air guide channel 1 extends to the top wall of the cabinet 4, and the top wall of the cabinet 4 is provided with an air hole that cooperates with the air guide channel 1. Hot air has a lower density than cold air due to its high temperature, so hot air has a tendency to rise. The heat dissipation cavity 12 extending up and down and the air guide channel 1 extending to the top wall effectively utilize this natural law. This arrangement allows heat to be discharged outside the cabinet in the shortest path, thereby improving the heat dissipation efficiency. In addition, in other embodiments, the heat dissipation cavity can also be arranged left and right or tilted, as long as it is ensured that the heat can be discharged outside the cabinet through the air guide channel 1. At the same time, the air guide channel 1 extending to the top wall of the cabinet 4 does not occupy the space outside the cabinet, which reduces the volume of the servo drive cabinet and saves manufacturing costs. In addition, in other embodiments, to meet the needs, the air guide channel can also extend to the side wall of the cabinet, and of course, it can also extend to the outside of the cabinet, as long as it is ensured that the heat in the heat dissipation cavity can be transferred to the outside of the cabinet along the air guide channel.

[0031] In this embodiment, the air holes are provided with Figure 3 The dustproof net 10 shown in the figure can block external debris and prevent external debris from entering the servo drive.

[0032] In this embodiment, the end of the air guide channel 1 is provided with Figure 5The folded edge 2 shown is connected to the lower side of the top wall through the folded edge 2. The folded edge 2 allows the air guide channel 1 to be fitted and connected to the top wall, ensuring the reliability of the connection between the two. Connection holes are provided on the folded edge 2 and the top wall, and the detachable connection between the two is achieved by bolts. In this way, it is convenient to repair and replace the air guide channel 1, saving the cost of installation and maintenance. In addition, in other embodiments, the air guide channel may not be provided with a folded edge, and its end may be connected to the top wall of the servo drive by a non-detachable method such as welding or bonding. The dustproof net 10 is connected to the upper side of the top wall, and the dustproof net 1 in this embodiment is rotatably assembled with the cabinet 4, so that the dustproof net 10 can be opened or closed relative to the cabinet 4 to meet the needs of different working conditions. In addition, in other embodiments, the dustproof net can also be screwed to the top wall, and the specific position can also be connected to the lower side of the top wall.

[0033] In this embodiment, an air intake fan 5 is provided at the air inlet of the heat dissipation cavity 12. Figure 8 As shown, three air intake fans 5 are arranged at the bottom of the heat dissipation cavity. Without the air intake fans 5, the heat dissipation efficiency of the heat dissipation element is low. Therefore, in this embodiment, the air intake fans 5 are arranged at the air inlet of the heat dissipation cavity 12, so that when the air intake fans 5 are working, the heat of the heat dissipation element is blown out of the cabinet along the air guide channel 1 through the airflow, which greatly improves the heat dissipation efficiency of the heat dissipation cavity 12.

[0034] In this embodiment, the installation cavity 11 has an installation cavity air inlet and an installation cavity air outlet, and a cooling fan 14 is provided at the installation cavity air inlet. Figure 7 , Figure 8 As shown, two cooling fans 51 are disposed at the bottom of the installation cavity 11 , so that the cooling fan 14 can blow the heat of the power components out of the installation cavity 11 , thereby improving the cooling efficiency of the power components in the installation cavity 11 .

[0035] In this embodiment, the installation cavity 11 extends up and down, and the air outlet of the installation cavity 11 is at the upper end. In this way, the principle of hot air ascending is also utilized, so that the hot air in the installation cavity 11 will not gather in the installation cavity 11, and will be discharged to the outside of the cabinet in the shortest path. At the same time, under the action of the cooling fan 14, the airflow can also quickly discharge the heat of the power component out of the housing, thereby improving the heat dissipation efficiency. In addition, in other embodiments, to meet the needs, the installation cavity 11 can also extend left and right or extend obliquely.

[0036] In this embodiment, if Figure 2 As shown, the servo driver 3 is fixedly connected to the rear wall of the cabinet 4 through a housing, and the installation cavity 11 and the heat dissipation cavity 12 are arranged one after the other. Of course, in other embodiments, the servo driver 3 can also be fixedly connected to the front wall or both side walls of the cabinet through a housing. It is easy to imagine that the servo driver can also be fixed to the middle of the cabinet through a connector. Figure 4As shown, the air guide channel 1 is tilted forward from bottom to top. In actual engineering, a hinge or other components are provided on the top of the cabinet 4 and on one side of the servo drive 3. The vertical air guide channel 1 will interfere with the components in the cabinet. Therefore, the tilted air guide channel 1 in this embodiment can meet the actual needs of engineering. Of course, in other embodiments, when the servo drive 3 is installed at other positions in the cabinet and the vertical or horizontal air guide channel does not interfere with the components in the cabinet, the air guide channel can also be arranged vertically.

[0037] In this embodiment, the shell is cylindrical, and a finned heat sink is installed in the cylindrical shell. The finned heat sink includes a heat transfer base plate 13 and heat dissipation fins 8 on one side of the heat transfer base plate 13. The heat transfer base plate 13 is fixed in the shell along the axial direction of the cylindrical shell to divide the inner cavity of the shell into the installation cavity 11 and the heat dissipation cavity 12. The heat dissipation fins 8 constitute the heat dissipation element, and the power element is installed on the other side of the heat transfer base plate 13. The heat dissipation fins 8 of this embodiment are arranged along the direction from the air inlet to the air outlet of the servo driver 3. In this way, when the fan is working, the heat dissipation fins can divide the heat dissipation cavity 12 into different channels, and the heat of the heat dissipation fins 8 along the way can be blown out when the air flow blows through, which can more efficiently improve the heat dissipation effect of the servo driver. In addition, the power element of this embodiment can directly transfer the heat generated by it to the heat dissipation fins 8 through the heat transfer base plate 13, further improving the heat dissipation effect of the power element. In addition, in other implementations, a metal partition may be used to separate the installation cavity and the heat dissipation cavity, with the power component installed on one side of the metal partition and a heat sink or a heat pipe connected to the other side.

[0038] In this embodiment, the heat transfer bottom plate 13 is provided with Fig. 9 The heat pipe 9 shown. The heat pipe 9 can be used as a heat conducting element to further transfer the heat of the power device to the heat dissipation fins, thereby improving the heat dissipation effect on the power device.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A high-power servo drive cabinet, characterized in that: It includes a cabinet body, in which a servo driver is arranged, and the servo driver includes a shell, in which a mounting cavity and a heat dissipation cavity are provided, a power element is installed in the mounting cavity, a heat dissipation member for dissipating heat from the power element is provided in the heat dissipation cavity, the heat dissipation cavity has a heat dissipation cavity air inlet and a heat dissipation cavity air outlet, an air guide channel is provided at the heat dissipation cavity air outlet, and the air guide channel is communicated with the outside of the cabinet.

2. The high-power servo drive cabinet according to claim 1, characterized in that: The heat dissipation cavity extends up and down, the heat dissipation cavity air outlet is located at the upper end, and the air guide channel extends to the top wall of the cabinet, and the top wall of the cabinet is provided with air holes that cooperate with the air guide channel.

3. The high-power servo drive cabinet according to claim 2, characterized in that: A dustproof net is arranged at the air hole.

4. The high-power servo drive cabinet according to any one of claims 1 to 3, characterized in that: The end of the air guide channel is provided with a folded edge, and is connected to the lower side of the top wall through the folded edge, and the dustproof net is connected to the upper side of the top wall.

5. The high-power servo drive cabinet according to any one of claims 1 to 3, characterized in that: An air intake fan is arranged at the air inlet of the heat dissipation cavity.

6. The high-power servo drive cabinet according to any one of claims 1 to 3, characterized in that: The installation cavity has an installation cavity air inlet and an installation cavity air outlet, and a heat dissipation fan is arranged at the installation cavity air inlet.

7. The high-power servo drive cabinet according to claim 6, characterized in that: The installation cavity extends up and down, and the air outlet of the installation cavity is located at the upper end.

8. The high-power servo drive cabinet according to any one of claims 1 to 3, characterized in that: The servo driver is fixedly connected to the rear side wall of the cabinet through a shell, the installation cavity and the heat dissipation cavity are arranged one after the other, and the air guide channel is inclined forward from bottom to top.

9. The high-power servo drive cabinet according to any one of claims 1 to 3, characterized in that: The shell is cylindrical, and a fin-type radiator is installed in the cylindrical shell. The fin-type radiator includes a heat transfer base plate and heat dissipation fins on a side surface of the heat transfer base plate. The heat transfer base plate is fixed in the shell along the axial direction of the cylindrical shell to divide the inner cavity of the shell into the installation cavity and the heat dissipation cavity. The heat dissipation fins constitute the heat dissipation element, and the power component is installed on the other side surface of the heat transfer base plate.

10. The high-power servo drive cabinet according to claim 9, characterized in that: A heat pipe is arranged in the heat transfer bottom plate.

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