General low-voltage alternating-current frequency converter cabinet for mine
By designing an independent second air duct and deflector in the AC inverter cabinet, the cold air is directly directed to the inverter, which solves the problem of cooling performance degradation after the cold air passes through electronic components and circuits, and achieves more efficient cooling The effect is and the cleanliness is ensured through the filter, ensuring the normal use of the inverter.
Patent Information
- Application Number
- CN202420890240.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The cooling performance of existing AC inverter cabinets has the problem of degradation of cooling performance after cold air passes through electronic components and circuits, which affects the normal use of the inverter.
A general-purpose low-voltage AC inverter cabinet for mining is designed, and a separate second air duct is used to direct the cold air to the inverter to prevent the cold air from passing through electronic components and circuits, thereby improving the cooling effect, and passing through the deflector and The filter optimizes the path and cleanliness of cold air.
It effectively improves the cooling and cooling effect, ensures the normal use of the inverter, and prevents dust from entering and affects use through a filter.
Smart Images
Figure CN222234256U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of inverter heat dissipation, and in particular to a general low-voltage AC inverter cabinet for mining. Background Art
[0002] An AC inverter is a power control device that can convert a fixed-frequency AC power supply into a variable-frequency AC power supply, thereby achieving speed control of the motor;
[0003] The cabinet of an AC inverter usually refers to a metal cabinet used to install and protect the AC inverter. The cabinet design of an AC inverter usually takes into account factors such as heat dissipation, ventilation, dust prevention, and waterproofing to ensure that the inverter can operate normally in harsh working environments.
[0004] In the related art, the heat dissipation method of the AC inverter cabinet is usually to install a fan on the top of the cabinet, and at the same time, an air inlet is opened at the bottom of the cabinet. Specifically, when dissipating heat, the fan is turned on, and the fan draws cold air outside the cabinet from the air inlet into the cabinet to achieve cooling of the inverter inside the cabinet.
[0005] However, in actual operation, other electronic components and circuits are usually installed at the bottom of the cabinet. When the inverter is in use, these electronic components and circuits will generate heat. When the fan draws cold air from the outside into the cabinet, the cold air will first pass through the electronic components and circuits at the bottom of the cabinet, and then pass upward through the inverter.
[0006] After the cold air passes through the electronic components and circuits, the heat generated by the electronic components and circuits will affect the cooling performance of the cold air, thereby causing the cold air to reduce the cooling effect of the inverter when it subsequently passes through the inverter, which is not conducive to the daily use of the inverter. Utility Model Content
[0007] The present application provides a general low-voltage AC inverter cabinet for mining, the purpose of which is to effectively improve the daily cooling effect of the inverter, thereby effectively ensuring the daily use of the inverter.
[0008] This application provides a general low-voltage AC inverter cabinet for mining, which adopts the following technical solutions:
[0009] A general low-voltage AC inverter cabinet for mining includes a cabinet body, wherein a baffle is installed in the cabinet body, and the baffle is used to divide the cabinet body into a first air duct and a second air duct;
[0010] A first air inlet is provided on a side of the first air duct away from the second air duct, a first air outlet is provided on the top of the first air duct, and the first air inlet is connected to the first air outlet; a second air inlet is provided on a side of the second air duct away from the first air duct, a second air outlet is provided on the top of the second air duct, and the second air inlet is connected to the second air outlet;
[0011] A fan is installed on the top of the cabinet, and the fan is connected to the first air outlet and the second air outlet;
[0012] The first air duct and the second air duct are arranged independently of each other, and the second air duct is used to guide the cold air directly to the inverter.
[0013] By adopting the above technical solution, the first air duct cools the inverter in the following manner: after the cold air outside the cabinet enters the first air duct through the first air inlet, it first passes through the electronic components and circuits at the bottom of the first air duct, then passes upward through the inverter, and finally is discharged out of the cabinet from the first air outlet;
[0014] The second air duct cools the inverter in the following way: the cold air outside the cabinet enters the second air duct through the second air inlet, flows directly to the inverter, and is discharged out of the cabinet through the second air outlet after flowing out of the inverter.
[0015] This setting method, by adding an independent second air duct in the cabinet, allows the cold air outside the cabinet to directly act on the inverter without passing through other electronic components and circuits when the fan is turned on, thereby effectively avoiding the problem of cold air being affected by other electronic components and circuits and causing the cooling performance to decrease, thereby effectively improving the daily cooling effect of the cold air on the inverter and effectively ensuring the daily use of the inverter.
[0016] Preferably, a first guide plate and a second guide plate are respectively provided between the upper and lower ends of the frequency converter and the baffle plate, and the first guide plate is connected to the second guide plate;
[0017] Ventilation holes are provided on the baffle plate at the locations where the first guide plate and the second guide plate are installed, the two vents are connected, and the vents are connected to the first guide plate and the second guide plate, and the two vents are connected to the second air inlet and the second air outlet;
[0018] The second guide plate is used to guide the cold air at the second air inlet directly to the inverter.
[0019] By adopting the above technical solution, specifically, when the fan is turned on: the cold air outside the cabinet enters the second air duct through the second air inlet, then flows to the second guide plate, and directly flows into the inverter through the second guide plate, and then flows from the inverter to the first guide plate, and flows to the second air outlet through the first guide plate.
[0020] The second guide plate is used to guide the cold air flowing into the second air duct directly to the inverter. After the cold air cools the inverter, it is discharged to the second air outlet through the first guide plate. This allows the cold air outside the cabinet to directly act on the inverter without passing through other electronic components and circuits, thereby effectively improving the daily cooling effect of the cold air on the inverter.
[0021] Preferably, the first guide plate and the second guide plate are both fixed to the frequency converter by fastening bolts.
[0022] By adopting the above technical solution, the stability of the connection between the first guide plate and the second guide plate and the inverter is effectively guaranteed by fastening bolts. At the same time, when the first guide plate and the second guide plate need to be replaced, the first guide plate and the second guide plate can be easily removed from the inverter.
[0023] Preferably, a filter is installed at the second air inlet.
[0024] By adopting the above technical solution, when the fan draws external cold air into the second air duct, it will also suck in the dust in the outside air, and use the filter to filter the dust in the air, thereby effectively preventing dust from entering the second air duct and affecting the use of the inverter.
[0025] Preferably, a fixing frame for fixing the filter screen is installed at the second air inlet.
[0026] By adopting the above technical solution, the filter is installed and fixed using a fixing frame, which effectively ensures the stability of the filter installed at the second air inlet.
[0027] Preferably, the filter screen and the fixing frame are installed in a sliding manner.
[0028] By adopting the above technical solution, during the specific installation, the filter screen can be directly slid onto the fixed frame, thereby facilitating the installation and removal between the filter screen and the fixed frame, and making it convenient for the staff to replace and clean the filter screen.
[0029] Preferably, the fixing frame comprises two first plates and two second plates, and the two first plates are provided with sliding grooves along their length direction on the sides close to each other, and the upper and lower ends of the filter are respectively connected to the two sliding grooves by sliding.
[0030] By adopting the above technical solution, when installing the filter, the upper and lower ends of the filter can be directly slid into the slide grooves on the two first plates respectively, thereby realizing a sliding installation method between the filter and the fixed frame.
[0031] Preferably, the two second plates are installed with the two first plates respectively by plugging.
[0032] By adopting the above technical solution, the plug-in installation method makes it easier for workers to assemble the fixing frame, making it more convenient to use.
[0033] Preferably, slots are provided at both left and right ends of the two first plates, and the second plates are inserted into the slots on the same side of the two first plates along the vertical direction.
[0034] By adopting the above technical solution, the two first plates and the two second plates are plugged in by using the slots, thereby making it easier for workers to install and disassemble the fixing frame.
[0035] In summary, the present application includes at least one of the following beneficial technical effects:
[0036] 1. Cooling method of the inverter by the first air duct: After the cold air outside the cabinet enters the first air duct through the first air inlet, it first passes through the electronic components and circuits at the bottom of the first air duct, then passes upward through the inverter, and finally is discharged from the cabinet through the first air outlet;
[0037] The second air duct cools the inverter in the following way: the cold air outside the cabinet enters the second air duct through the second air inlet, flows directly to the inverter, and is discharged out of the cabinet through the second air outlet after flowing out of the inverter.
[0038] This setting method adds an independent second air duct in the cabinet, so that when the fan is turned on, the cold air outside the cabinet can directly act on the inverter without passing through other electronic components and circuits, thereby effectively avoiding the problem of cooling performance degradation caused by the cold air being affected by other electronic components and circuits, thereby effectively improving the daily cooling effect of the cold air on the inverter, and effectively ensuring the daily use of the inverter;
[0039] 2. Use the second guide plate to guide the cold air flowing into the second air duct directly to the inverter. After the cold air cools the inverter, it is discharged to the second air outlet through the first guide plate. This allows the cold air outside the cabinet to directly act on the inverter without passing through other electronic components and circuits, thereby effectively improving the daily cooling effect of the cold air on the inverter;
[0040] 3. The filter and the fixed frame are installed by sliding. During installation, the filter can be directly slid onto the fixed frame, which makes it easy to install and remove the filter and the fixed frame, and it is convenient for the staff to replace and clean the filter. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;
[0042] Figure 2 It is a structural schematic diagram of an embodiment of the present application specifically showing the positional relationship between the filter screen, the first plate body and the second plate body;
[0043] Figure 3 It is a structural schematic diagram of an embodiment of the present application that specifically shows the position relationship between the slide groove and the slot.
[0044] Figure numerals: 1. cabinet; 2. baffle plate; 3. first air duct; 4. second air duct; 5. first air inlet; 6. first air outlet; 7. second air inlet; 8. second air outlet; 9. fan; 10. first guide plate; 11. second guide plate; 12. vent; 13. filter; 14. fixing frame; 141. first plate; 142. second plate; 15. slide groove; 16. slot. DETAILED DESCRIPTION
[0045] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.
[0046] Example:
[0047] The embodiment of the present application discloses a general low-voltage AC inverter cabinet for mining, referring to Figure 1 , including a cabinet 1, which is in the shape of a rectangular parallelepiped and hollow inside. A baffle plate 2 is installed in the cabinet 1 along the vertical direction. The baffle plate 2 is in the shape of a rectangular parallelepiped plate. The baffle plate 2 is used to divide the inside of the cabinet 1 into two independent chambers, which are respectively a first air duct 3 and a second air duct 4. The inverter is installed in the middle of the first air duct 3, and the remaining electronic components and circuits are installed at the bottom of the first air duct 3. A first air inlet 5 is provided on the side of the bottom of the first air duct 3 away from the second air duct 4, and a first air outlet 6 is provided on the top of the first air duct 3, and the first air inlet 5 is connected to the first air outlet 6; a second air inlet 7 is provided on the side of the bottom of the second air duct 4 away from the first air duct 3, and a second air outlet 8 is provided on the top of the second air duct 4, and the second air inlet 7 is connected to the second air outlet 8.
[0048] At the same time, refer to Figure 1A fan 9 is installed on the top of the cabinet 1, and the fan 9 is installed at the first air outlet 6 and the second air outlet 8, and the fan 9 is connected with the first air outlet 6 and the second air outlet 8. When the fan 9 is turned on, the cold air outside the cabinet 1 enters the first air duct 3 and the second air duct 4 from the first air inlet 5 and the second air inlet 7 respectively, and is discharged from the first air outlet 6 and the second air outlet 8.
[0049] The first air duct 3 cools the inverter in the following way: after the cold air outside the cabinet 1 enters the first air duct 3 through the first air inlet 5, it first passes through the electronic components and circuits at the bottom of the first air duct 3, then passes upward through the inverter, and finally is discharged from the cabinet 1 through the first air outlet 6;
[0050] The cooling method of the inverter by the second air duct 4 is as follows: the cold air outside the cabinet 1 enters the second air duct 4 through the second air inlet 7, flows directly to the inverter, and is discharged outside the cabinet 1 through the second air outlet 8 after flowing out of the inverter.
[0051] This arrangement, by adding an independent second air duct 4 in the cabinet 1, allows the cold air outside the cabinet 1 to directly act on the inverter without passing through other electronic components and circuits when the fan 9 is turned on, thereby effectively preventing the cold air from being affected by other electronic components and circuits and causing the cooling performance to decrease, thereby effectively improving the daily cooling effect of the cold air on the inverter and effectively ensuring the daily use of the inverter.
[0052] Specifically, refer to Figure 1 The first guide plate 10 and the second guide plate 11 are respectively provided between the upper and lower ends of the inverter and the baffle plate 2. The first guide plate 10 and the second guide plate 11 extend into the upper and lower ends of the inverter respectively, and the first guide plate 10 and the second guide plate 11 are connected. The first guide plate 10 is installed on the top of the inverter, and the second guide plate 11 is installed at the bottom of the inverter, and the installation height of the second guide plate 11 is higher than other electronic components and circuits at the bottom of the first air duct 3;
[0053] At the same time, refer to Figure 1 Corresponding ventilation holes 12 are provided on the baffle plate 2 at the installation positions relative to the first guide plate 10 and the second guide plate 11, the two ventilation holes 12 are connected, and the ventilation holes 12 are connected to the first guide plate 10 and the second guide plate 11, and the two ventilation holes 12 are connected to the second air inlet 7 and the second air outlet 8.
[0054] Specifically, when the fan 9 is turned on: the cold air outside the cabinet 1 enters the second air duct 4 through the second air inlet 7, then flows to the second guide plate 11, and directly flows into the inverter through the second guide plate 11, and then flows from the inverter to the first guide plate 10, and flows to the second air outlet 8 through the first guide plate 10.
[0055] The cold air flowing into the second air duct 4 is directly guided to the inverter by the second air guide plate 11. After cooling the inverter, the cold air is discharged to the second air outlet 8 through the first air guide plate 10. This allows the cold air outside the cabinet 1 to directly act on the inverter without passing through other electronic components and circuits, thereby effectively improving the daily cooling effect of the cold air on the inverter.
[0056] In this embodiment, the first guide plate 10 and the second guide plate 11 are both fixed to the inverter by fastening bolts. The fastening bolts are used to effectively ensure the stability of the connection between the first guide plate 10 and the second guide plate 11 and the inverter. At the same time, when the first guide plate 10 and the second guide plate 11 need to be replaced, the first guide plate 10 and the second guide plate 11 are easy to remove from the inverter.
[0057] Further, refer to Figure 1 and Figure 2 A filter 13 is installed at the second air inlet 7 of the second air duct 4. When the fan 9 draws the external cold air into the second air duct 4, the dust in the external air is also sucked in. The filter 13 is used to filter the dust in the air, thereby effectively preventing the dust from entering the second air duct 4 and affecting the use of the inverter.
[0058] Specifically, refer to Figure 1 and Figure 2 A fixing frame 14 for fixing the filter 13 is installed at the second air inlet 7 . The fixing frame 14 is in a rectangular parallelepiped shape. The filter 13 is installed and fixed by the fixing frame 14 , which effectively ensures the stability of the filter 13 installed at the second air inlet 7 .
[0059] In this embodiment, the filter 13 and the fixed frame 14 are installed by sliding. During the specific installation, the filter 13 can be directly slid onto the fixed frame 14, which makes it easy to install and disassemble the filter 13 and the fixed frame 14, and it is convenient for the staff to replace and clean the filter 13.
[0060] Specifically, refer to Figure 1 and Figure 2 The fixing frame 14 includes two first plates 141 and two second plates 142. The two first plates 141 are distributed vertically, and the two second plates 142 are distributed horizontally. The two first plates 141 and the two second plates 142 form a square frame structure. Figure 2 and Figure 3The two first plates 141 are provided with long slots 15 along their lengths on the sides close to each other. Specifically, when installing the filter 13, the upper and lower ends of the filter 13 can be directly slid into the slots 15 on the two first plates 141, respectively, so as to realize the installation method of sliding between the filter 13 and the fixing frame 14. After the filter 13 is installed between the two first plates 141, the two second plates 142 are respectively installed at the left and right ends of the filter 13, and the left and right ends of the filter 13 are positioned by the two second plates 142.
[0061] Furthermore, the two second plates 142 are respectively connected to the two first plates 141 by plugging. The plugging installation method makes it easier for workers to assemble the fixing frame 14, and is more convenient to use.
[0062] Specifically, refer to Figure 2 and Figure 3 , slots 16 are provided at both ends of the two first plates 141. Specifically, when installing the two second plates 142, the second plates 142 are inserted into the slots 16 on the same side of the two first plates 141 along the vertical direction, and the two first plates 141 and the two second plates 142 are connected through the slots 16, which makes it convenient for the staff to install and disassemble the fixed frame 14.
[0063] The implementation principle of the general low-voltage AC inverter cabinet for mining in the embodiment of the present application is:
[0064] The first air duct 3 cools the inverter in the following way: after the cold air outside the cabinet 1 enters the first air duct 3 through the first air inlet 5, it first passes through the electronic components and circuits at the bottom of the first air duct 3, then passes upward through the inverter, and finally is discharged from the cabinet 1 through the first air outlet 6;
[0065] The cooling method of the inverter by the second air duct 4 is as follows: the cold air outside the cabinet 1 enters the second air duct 4 through the second air inlet 7, flows directly to the inverter, and is discharged outside the cabinet 1 through the second air outlet 8 after flowing out of the inverter.
[0066] This arrangement, by adding an independent second air duct 4 in the cabinet 1, allows the cold air outside the cabinet 1 to directly act on the inverter without passing through other electronic components and circuits when the fan 9 is turned on, thereby effectively preventing the cold air from being affected by other electronic components and circuits and causing the cooling performance to decrease, thereby effectively improving the daily cooling effect of the cold air on the inverter and effectively ensuring the daily use of the inverter.
[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. General low-voltage AC inverter cabinet for mining, characterized by: It comprises a cabinet (1), wherein a baffle plate (2) is installed in the cabinet (1), and the baffle plate (2) is used to divide the cabinet (1) into a first air duct (3) and a second air duct (4); A first air inlet (5) is provided on a side of the first air duct (3) away from the second air duct (4), a first air outlet (6) is provided on the top of the first air duct (3), and the first air inlet (5) is communicated with the first air outlet (6); a second air inlet (7) is provided on a side of the second air duct (4) away from the first air duct (3), a second air outlet (8) is provided on the top of the second air duct (4), and the second air inlet (7) is communicated with the second air outlet (8); A fan (9) is installed on the top of the cabinet (1), and the fan (9) is connected to the first air outlet (6) and the second air outlet (8); The first air duct (3) and the second air duct (4) are arranged independently of each other, and the second air duct (4) is used to guide the cold air directly to the frequency converter.
2. The general low-voltage AC inverter cabinet for mining according to claim 1 is characterized in that: A first guide plate (10) and a second guide plate (11) are respectively provided between the upper and lower ends of the frequency converter and the baffle plate (2), and the first guide plate (10) and the second guide plate (11) are connected; A vent (12) is provided through the baffle plate (2) at the installation position relative to the first guide plate (10) and the second guide plate (11), the two vents (12) are connected, and the vent (12) is connected to the first guide plate (10) and the second guide plate (11), and the two vents (12) are connected to the second air inlet (7) and the second air outlet (8); The second guide plate (11) is used to guide the cold air at the second air inlet (7) directly to the frequency converter.
3. The general low-voltage AC inverter cabinet for mining according to claim 2 is characterized in that: The first guide plate (10) and the second guide plate (11) are both fixed to the frequency converter by fastening bolts.
4. The general low-voltage AC inverter cabinet for mining according to claim 1 is characterized in that: A filter screen (13) is installed at the second air inlet (7).
5. The general low-voltage AC inverter cabinet for mining according to claim 4 is characterized in that: A fixing frame (14) for fixing the filter screen (13) is installed at the second air inlet (7).
6. The general low-voltage AC inverter cabinet for mining according to claim 5 is characterized in that: The filter screen (13) and the fixing frame (14) are installed in a sliding manner.
7. The general low-voltage AC inverter cabinet for mining according to claim 6 is characterized in that: The fixing frame (14) comprises two first plates (141) and two second plates (142); a slide groove (15) is provided along the length direction of the two first plates (141) on the sides close to each other; and the upper and lower ends of the filter screen (13) are respectively connected to the two slide grooves (15) by sliding insertion.
8. The general low-voltage AC inverter cabinet for mining according to claim 7 is characterized in that: The two second plates (142) are respectively installed with the two first plates (141) in a plug-in manner.
9. The general low-voltage AC inverter cabinet for mining according to claim 8 is characterized in that: Slots (16) are provided at both left and right ends of the two first plates (141), and the second plates (142) are inserted into the slots (16) on the same side of the two first plates (141) in a vertical direction.