Multi-source input composite frequency converter
By designing a composite frequency converter with multiple input sources, the flexibility problem of a single power input in frequency converters is solved, enabling flexible switching and adaptation of power inputs, expanding the application range, and improving the applicability and stability of the equipment.
Patent Information
- Application Number
- CN202520498931.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Most existing frequency converters use a single power input, which cannot flexibly switch power according to actual needs, resulting in limited functionality and application range, making it difficult to meet the needs of various complex working conditions.
Design a multi-source input composite frequency converter. By setting up a photovoltaic input interface, a 220V AC input interface, a 380V AC input interface, a DC switch, and a 380V AC switch, it can realize flexible switching of power input and adapt to different types of load equipment. Combined with the controller, it can regulate voltage and frequency.
This enables the frequency converter to have flexible power input according to actual working conditions and needs, expands its functions and application range, improves the applicability and flexibility of the equipment, and ensures stability and reliability.
Smart Images
Figure CN223928222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of frequency converter technology, specifically to a multi-source input composite frequency converter. Background Technology
[0002] A frequency converter (VFD) is a power control device that controls the speed and torque of an AC motor by changing the frequency and voltage of the motor's power supply. Its core modules include a rectifier (AC to DC), a filter circuit, an inverter (DC to AC), and a control unit. VFDs are widely used in various fields, such as industrial automation, machinery manufacturing, wind power, and water treatment. VFDs not only enable stepless speed regulation of motors, improving equipment operating efficiency, but also effectively reduce energy consumption and waste. Furthermore, VFDs possess multiple protection functions, including overload protection and short-circuit protection, ensuring the stability and safety of motor operation. However, in current technology, VFDs mostly use a single power input, unable to flexibly switch between different power supplies according to actual needs, thus limiting their functionality and application range and making it difficult to meet the requirements of various complex operating conditions. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides a multi-source input composite frequency converter, which solves the problem that existing frequency converters mostly use a single power input, making it impossible to flexibly switch between different power sources according to actual needs, thus limiting their functions and application range and making it difficult to meet the needs of various complex working conditions.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-source input composite frequency converter, comprising a sheet metal housing, a sheet metal cover plate fixedly connected to the front of the sheet metal housing, a photovoltaic input interface provided on one side of the bottom of the sheet metal housing, a 220V AC input interface provided on one side of the bottom of the sheet metal housing adjacent to the photovoltaic input interface, a 380V AC input interface provided on one side of the bottom of the sheet metal housing adjacent to the 220V AC input interface, a DC switch provided on the bottom of the sheet metal housing, and a... The device is equipped with a 380V AC switch. A 380V AC output interface is located on the bottom of the sheet metal housing, away from the photovoltaic input interface. A 220V AC output interface is located on the bottom of the sheet metal housing, next to the 380V AC output interface. A control panel is located on the front of the sheet metal cover. A controller is located inside the sheet metal housing. The photovoltaic input interface, 220V AC input interface, 380V AC input interface, DC switch, 380V AC switch, 380V AC output interface, 220V AC output interface, and control panel are all electrically connected to the controller.
[0005] Preferably, exhaust vents are provided on both sides of the sheet metal housing, an exhaust hood is fixedly connected to the outside of the exhaust vents on the sheet metal housing, an exhaust fan is installed on the inside of one of the exhaust vents on the sheet metal housing, the exhaust fan is electrically connected to the controller, and a filter screen is provided on the side of the exhaust vent and the exhaust hood that are close to each other.
[0006] Preferably, the front of the sheet metal cover plate is provided with a fixing groove, the control panel is installed inside the fixing groove, a transparent cover plate is rotatably connected to the top of the inner wall of the fixing groove, and a fixing clip is provided at the bottom of the transparent cover plate, the fixing clip being connected to the fixing groove.
[0007] Preferably, the back of the sheet metal housing is provided with inner grooves on both the top and bottom, and fixing holes are provided on both sides of the inner grooves.
[0008] Preferably, gripping grooves are provided on both sides of the back of the sheet metal housing.
[0009] This utility model provides a multi-source input composite frequency converter. It offers the following advantages: This multi-source input composite frequency converter, through the cooperation of a sheet metal housing, sheet metal cover, photovoltaic input interface, 220V AC input interface, 380V AC input interface, DC switch, 380V AC switch, 380V AC output interface, 220V AC output interface, control panel, and controller, employs a multi-source interface setup with photovoltaic, 220V AC, and 380V AC input interfaces. It can quickly switch between different power inputs according to actual needs, allowing the frequency converter to flexibly select and switch different power input methods based on actual operating conditions and requirements. It can adapt to different types of load equipment, greatly expanding the frequency converter's functionality and application range, thereby meeting power requirements under different operating conditions. This helps improve the applicability and flexibility of the equipment.
[0010] The heat dissipation structure of the frequency converter is formed by the cooperation between the sheet metal housing, exhaust vent, exhaust cover and exhaust fan. Effective air convection is formed inside the frequency converter, thereby accelerating the heat exchange inside the frequency converter. It can effectively dissipate the heat generated by the internal components of the frequency converter, thereby ensuring its stability and reliability during long-term operation. This helps to improve the service life and performance of the frequency converter. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a rear view of the structure of this utility model;
[0013] Figure 3 This is a schematic diagram of the appearance of the present utility model;
[0014] Figure 4 This is an exploded view of the present invention;
[0015] Figure 5 for Figure 4 A magnified view of a portion of region A in the middle;
[0016] Figure 6 for Figure 4 A magnified view of a portion of region B in the middle.
[0017] In the diagram: 1. Sheet metal casing; 2. Sheet metal cover; 3. Photovoltaic input interface; 4. 220V AC input interface; 5. 380V AC input interface; 6. DC switch; 7. 380V AC switch; 8. 380V AC output interface; 9. 220V AC output interface; 10. Control panel; 11. Controller; 12. Exhaust vent; 13. Exhaust hood; 14. Exhaust fan; 15. Filter screen; 16. Fixing groove; 17. Transparent cover; 18. Fixing clip; 19. Inner groove; 20. Fixing hole; 21. Grip groove. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] In existing technologies, frequency converters mostly use a single power input, which cannot flexibly switch to different power supplies according to actual needs. This limits their functions and application range, making it difficult to meet the needs of various complex working conditions.
[0020] In view of this, the present invention provides a multi-source input composite frequency converter. Through the cooperation of a sheet metal housing, sheet metal cover, photovoltaic input interface, 220V AC input interface, 380V AC input interface, DC switch, 380V AC switch, 380V AC output interface, 220V AC output interface, control panel, and controller, it adopts a multi-source interface setting of photovoltaic input interface, 220V AC input interface, and 380V AC input interface. Through the DC switch and 380V AC switch, different power inputs can be quickly switched according to actual needs. This allows the frequency converter to flexibly select and switch different power input methods according to actual operating conditions and needs, and can adapt to different types of load equipment, greatly expanding the function and application range of the frequency converter, thereby meeting the power requirements under different operating conditions.
[0021] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.
[0022] Depend on Figure 1-6 As can be seen, a multi-source input composite frequency converter includes a sheet metal housing 1. A sheet metal cover plate 2 is fixedly connected to the front of the sheet metal housing 1. A photovoltaic input interface 3 is provided on one side of the bottom of the sheet metal housing 1. A 220V AC input interface 4 is provided on the side of the bottom of the sheet metal housing 1 next to the photovoltaic input interface 3. A 380V AC input interface 5 is provided on the side of the bottom of the sheet metal housing 1 next to the 220V AC input interface 4. A DC switch 6 is provided on the bottom of the sheet metal housing 1. A 380V AC switch 7 is provided on the side of the bottom of the sheet metal housing 1 next to the DC switch 6. A 380V AC output interface 8 is provided on the side of the bottom of the sheet metal housing 1 away from the photovoltaic input interface 3. A 220V AC output interface 9 is provided on the side of the bottom of the sheet metal housing 1 next to the 380V AC output interface 8. The front of the sheet metal cover plate 2 is provided with... A control panel 10 is provided, which receives user input commands and information and transmits them to the controller 11 for processing. Users can set and adjust the inverter's operating parameters, such as selecting the input power voltage and setting the output frequency, using interactive elements like buttons, knobs, or a touchscreen on the control panel 10. The controller 11 is located inside the sheet metal housing 1. The controller 11 regulates the input DC, 220V AC, and 380V AC power to voltages and frequencies suitable for the load equipment. The photovoltaic input interface 3, 220V AC input interface 4, 380V AC input interface 5, DC switch 6, 380V AC switch 7, 380V AC output interface 8, 220V AC output interface 9, and control panel 10 are all electrically connected to the controller 11.
[0023] In the specific implementation process, it is worth noting that the shell structure of the composite frequency converter is formed by the cooperation between the sheet metal housing 1 and the sheet metal cover plate 2. The control panel 10 is used to receive user input instructions and information and transmit them to the controller 11 for processing. Users can set and adjust the operating parameters of the frequency converter, such as the selection of input power supply voltage and the setting of output frequency, through interactive elements such as buttons, knobs or touch screens on the control panel 10. The controller 11 is used to adjust the input DC, 220V AC and 380V AC to the voltage and frequency suitable for the operation of the load equipment through the sheet metal housing 1, sheet metal cover plate 2, and photovoltaic input. The coordination between interface 3, 220V AC input interface 4, 380V AC input interface 5, and controller 11 utilizes a multi-source interface setup, allowing the inverter to flexibly adapt to various power input requirements, thus improving the applicability and flexibility of the equipment. The coordination between the sheet metal housing 1, sheet metal cover 2, DC switch 6, 380V AC switch 7, and controller 11 facilitates user switching of the inverter's input source while ensuring safe circuit operation. The sheet metal housing 1, sheet metal cover 2, 380V AC output interface 8, and 220V AC output interface 9 further enhance the inverter's performance. The interaction between interface 9 and controller 11 utilizes a dual-output interface design with 380V AC output interface 8 and 220V AC output interface 9, enabling the inverter to adapt to different types of load equipment and further expanding its application range. Through the interaction between the sheet metal housing 1, sheet metal cover 2, photovoltaic input interface 3, 220V AC input interface 4, 380V AC input interface 5, DC switch 6, 380V AC switch 7, 380V AC output interface 8, 220V AC output interface 9, control panel 10, and controller 11, a multi-source interface setup using photovoltaic input interface 3, 220V AC input interface 4, and 380V AC input interface 5 is employed. Furthermore, the DC switch 6 and the 380V AC switch 7 allow for rapid switching between different power inputs according to actual needs. This enables the frequency converter to flexibly select and switch between different power input methods based on actual operating conditions and requirements, and to adapt to different types of load equipment. This greatly expands the functionality and application range of the frequency converter, thereby meeting the power requirements under different operating conditions. The specific models of the photovoltaic input interface 3, 220V AC input interface 4, 380V AC input interface 5, DC switch 6, 380V AC switch 7, 380V AC output interface 8, 220V AC output interface 9, control panel 10, and controller 11 are not limited, as long as they meet the usage requirements.
[0024] Furthermore, both sides of the sheet metal housing 1 are provided with exhaust vents 12. An exhaust hood 13 is fixedly connected to the outside of the exhaust vent 12 on the sheet metal housing 1. An exhaust fan 14 is installed inside one of the exhaust vents 12 on the sheet metal housing 1. Under the control of the controller 11, the exhaust fan 14 can automatically adjust its speed according to the working status of the frequency converter, thereby achieving precise control of the internal temperature of the frequency converter. The exhaust fan 14 is electrically connected to the controller 11. A filter screen 15 is provided on the side of the exhaust vent 12 and the exhaust hood 13 that are close to each other. The filter screen 15 can effectively prevent dust and other impurities from entering the inside of the frequency converter, ensuring the cleanliness of its internal environment and further extending the service life of the equipment.
[0025] In the specific implementation process, it is worth noting that, under the control of the controller 11, the exhaust fan 14 can automatically adjust its speed according to the working status of the frequency converter, thereby achieving precise control of the internal temperature of the frequency converter. The filter screen 15 can effectively prevent dust and other impurities from entering the frequency converter, ensuring the cleanliness of its internal environment and further extending the service life of the equipment. The cooperation between the sheet metal housing 1, the exhaust port 12, the exhaust hood 13, and the exhaust fan 14 constitutes the heat dissipation structure of the frequency converter. The exhaust fan 14 allows the air inside the frequency converter to be discharged through the exhaust hood 13 on one side and fresh air to be drawn in through the exhaust hood 13 on the other side with the filter screen 15, forming effective air convection, thereby accelerating the heat exchange inside the frequency converter and effectively dissipating the heat generated by the internal components of the frequency converter, ensuring its stability and reliability during long-term operation. At the same time, the specific model of the exhaust fan 14 is not limited, as long as it meets the usage requirements.
[0026] Furthermore, a fixing groove 16 is provided on the front of the sheet metal cover plate 2, the control panel 10 is installed inside the fixing groove 16, a transparent cover plate 17 is rotatably connected to the top of the inner wall of the fixing groove 16, and a fixing clip 18 is provided at the bottom of the transparent cover plate 17, which is connected to the fixing groove 16.
[0027] In the specific implementation process, it is worth noting that through the cooperation between the sheet metal cover plate 2, the control panel 10, the fixing groove 16, the transparent cover plate 17 and the fixing clip 18, the control panel 10 is installed inside the fixing groove 16 and covered by the transparent cover plate 17. The transparent cover plate 17 can protect the control panel 10 from interference and damage from the external environment, while keeping its operation interface clearly visible, making it convenient for users to operate and observe.
[0028] Furthermore, the back of the sheet metal housing 1 is provided with inner grooves 19 on both the top and bottom, and fixing holes 20 are provided on both sides of the inner grooves 19.
[0029] In the specific implementation process, it is worth noting that the cooperation between the sheet metal housing 1, the inner groove 19 and the fixing hole 20 makes it easy to fix the frequency converter in a suitable position, increasing the flexibility and stability of the installation, and ensuring the stable operation of the frequency converter in different environments.
[0030] Furthermore, gripping grooves 21 are provided on both sides of the back of the sheet metal housing 1. The gripping grooves 21 facilitate stable gripping by workers when handling and moving the inverter, making the handling process more comfortable and safe.
[0031] In the specific implementation process, it is worth noting that the gripping groove 21 makes it easy for staff to grip the inverter stably when handling and moving it, making the handling process more comfortable and safe.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-source input composite frequency converter comprising a sheet metal shell (1), characterized in that: A sheet metal cover plate (2) is fixedly connected to the front of the sheet metal housing (1). A photovoltaic input interface (3) is provided on one side of the bottom of the sheet metal housing (1). A 220V AC input interface (4) is provided on one side of the bottom of the sheet metal housing (1) next to the photovoltaic input interface (3). A 380V AC input interface (5) is provided on one side of the bottom of the sheet metal housing (1) next to the 220V AC input interface (4). A DC switch (6) is provided on the bottom of the sheet metal housing (1). A 380V AC switch (7) is provided on one side of the bottom of the sheet metal housing (1) next to the DC switch (6). The bottom of the sheet metal housing (1) is far away from the photovoltaic input interface. 3) is provided with a 380V AC output interface (8) on one side. The bottom of the sheet metal shell (1) is provided with a 220V AC output interface (9) on one side of the 380V AC output interface (8). The front of the sheet metal cover (2) is provided with a control panel (10). The inside of the sheet metal shell (1) is provided with a controller (11). The photovoltaic input interface (3), 220V AC input interface (4), 380V AC input interface (5), DC switch (6), 380V AC switch (7), 380V AC output interface (8), 220V AC output interface (9) and control panel (10) are all electrically connected to the controller (11).
2. The composite multi-source input frequency converter according to claim 1, characterized in that: The sheet metal housing (1) has exhaust vents (12) on both sides. An exhaust hood (13) is fixedly connected to the outside of the exhaust vent (12) of the sheet metal housing (1). An exhaust fan (14) is installed inside one of the exhaust vents (12) of the sheet metal housing (1). The exhaust fan (14) is electrically connected to the controller (11). A filter screen (15) is provided on the side of the exhaust vent (12) and the exhaust hood (13) that are close to each other.
3. The multi-source input composite frequency converter according to claim 1, characterized in that: The front of the sheet metal cover plate (2) is provided with a fixing groove (16), the control panel (10) is installed inside the fixing groove (16), the top of the inner wall of the fixing groove (16) is rotatably connected with a transparent cover plate (17), the bottom of the transparent cover plate (17) is provided with a fixing clip (18), and the fixing clip (18) is connected to the fixing groove (16).
4. The composite multi-source input frequency converter of claim 1, wherein: The sheet metal shell (1) has an inner groove (19) on both the top and bottom of its back surface, and a fixing hole (20) is provided on both sides of the inner groove (19).
5. A multi-source input composite frequency converter according to claim 1, characterized in that: The sheet metal shell (1) has gripping grooves (21) on both sides of its back.