Frequency converter with high stability

Abstract

The utility model discloses a frequency converter with high stability, which belongs to the field of frequency converters, and is characterized in that a magnetic suction type filter plate is connected to a ventilation port, and gas filtration at a heat dissipation port of the frequency converter is realized through the magnetic suction type filter plate; a heat conduction opening is formed in the upper end of the frequency converter shell, a grid net opening matched with the heat conduction opening is formed in the fast assembly cover, heat dissipation fins are installed on the grid net opening, and the heat dissipation efficiency of the frequency converter is improved through the heat dissipation fins. The design of the quick-assembly cover is convenient to maintain, a user can easily connect and disassemble the magnetic suction type filter plate, and the process of cleaning and replacing the filter screen is simplified. Sensitive elements in the frequency converter are protected, and dust and pollutant damage is prevented. The heat dissipation fins rapidly transfer heat through the heat conduction soft strips, the heat dissipation efficiency is improved, it is guaranteed that the temperature is well controlled after equipment operates for a long time, and the service life is prolonged. The magnetic suction type filter plate effectively filters impurities, keeps the internal cleanness and heat dissipation effect of the frequency converter, improves the performance, and reduces the maintenance frequency and cost.

Description

Technical Field

[0001] The utility model relates to the field of frequency converters, in particular to a frequency converter with high stability. Background Art

[0002] A frequency converter (VFD) is a power electronic device used to control the speed and torque of an AC motor. It precisely controls the motor by varying the frequency and voltage of the motor's power supply. VFDs are widely used in industrial automation, elevators, air conditioners, conveyor belts, fans, pumps, and other applications requiring variable speed control. They not only improve equipment efficiency but also reduce energy consumption, minimize mechanical wear, and extend equipment life. VFDs typically consist of a rectifier, filter, inverter, and control unit.

[0003] In current industrial applications, inverters are important power electronic devices, and their stability is crucial to the operation of the entire system. Although existing inverter designs incorporate heat dissipation into their designs, using cooling holes in the device casing and fans to achieve rapid heat dissipation, the grille filtration used in these vents often lacks optimal filtering efficiency. This inefficient filtration allows dust, particles, and other small impurities in the air to easily pass through the grille and enter the inverter. Over time, this accumulation of dust and other particles inside the inverter gradually increases, potentially leading to poor heat dissipation. Poor heat dissipation can cause the inverter's internal temperature to rise, leading to overheating. Overheating not only reduces the inverter's operational stability but can also seriously impact its normal operation and even shorten its lifespan. Utility Model Content

[0004] The main purpose of the utility model is to provide a frequency converter with high stability, which can effectively solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A frequency converter with high stability includes a frequency converter housing, a key, a display screen, and a cooling fan. The key and the display screen are located at the front end of the frequency converter housing. The cooling fan is installed at the lower end of the frequency converter housing. The side wall of the frequency converter housing is the cooling fan. The cooling fan realizes heat dissipation of the frequency converter.

[0007] A mounting hole is provided at the upper corner of the inverter housing, and a quick-release cover is connected to the mounting hole of the inverter housing. The quick-release cover is provided with a docking hole adapted to the mounting hole. A vent adapted to the heat dissipation port is provided on the side wall of the quick-release cover, and a magnetic filter plate is connected to the vent to filter the gas at the heat dissipation port of the inverter.

[0008] A heat conduction port is provided at the upper end of the inverter housing, and a grille mesh port adapted to the heat conduction port is provided on the quick-release cover. Heat dissipation fins are installed on the grille mesh port to accelerate the heat dissipation efficiency of the inverter.

[0009] In a preferred embodiment of the present application, a fixing hole is provided on the side wall of the quick-release cover, which is directly opposite to the waist hole on the side wall of the inverter housing. Bolts are inserted into the fixing holes to fix the quick-release cover to the inverter housing, preventing the magnetic filter plate from being stably placed.

[0010] In the preferred embodiment of the present application, the cross section of the quick-release cover is designed to be "L"-shaped, and the corners of the quick-release cover are concave and matched with the concave corners of the inverter housing. A sealing rubber strip is provided at the connection between the quick-release cover and the inverter housing, and anti-slip rubber gaskets are provided at the connection between the docking hole and the mounting hole.

[0011] In a preferred embodiment of the present application, a thermally conductive strip is provided at the heat conduction port, the thermally conductive strip extends to the heat-generating component in the inverter housing, and the heat dissipation fins are in contact with the thermally conductive strip, and the contact ends of the heat dissipation fins and the thermally conductive strip are coated with thermal grease;

[0012] In a preferred embodiment of the present application, the quick-release cover is a metal plate, and the magnetic filter plate is adsorbed on the quick-release cover. A sealing ring is provided at the connection between the magnetic filter plate and the quick-release cover, and the magnetic filter plate is divided into a frame and a filter screen, and the filter screen is fixed in the frame;

[0013] In a preferred embodiment of the present application, the plurality of heat dissipating fins are distributed at equal intervals, and the heat dissipating fins are fixed to the quick-release cover by bolts, and the notches at the lower ends of the heat dissipating fins are adapted to the grille openings and the heat conduction openings.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The quick-release cover design provides convenient and fast maintenance. Carefully positioned docking holes and ventilation ports allow users to easily attach and detach the magnetic filter plate. This design not only simplifies maintenance but also makes cleaning and replacing the filter incredibly convenient. This effectively protects the drive's sensitive components from potential damage caused by the accumulation of dust and other contaminants.

[0016] Furthermore, the heat sink fins, through close contact with the thermally conductive strips, quickly transfer heat from the heat-generating components in the inverter housing to the fins. This highly efficient heat conduction mechanism significantly accelerates heat dissipation, ensuring that the inverter maintains excellent temperature control during long-term operation, thereby extending the service life of the device.

[0017] The magnetic filter plate effectively removes impurities from the air discharged through the heat dissipation vents, ensuring the cleanliness of the inverter's internal components. This not only maintains a clean environment within the inverter but also ensures that heat dissipation is not affected by the accumulation of dust and impurities. This dual protection mechanism further enhances inverter performance while reducing maintenance frequency and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a front view of the overall structure of the utility model;

[0020] Figure 3 This is an exploded view of the inverter housing and quick-release cover of the utility model;

[0021] Figure 4 This is a diagram showing the quick-release cover, heat dissipation fins and magnetic filter plate of the utility model.

[0022] In the figure: 1. Inverter housing; 2. Button; 3. Display screen; 4. Cooling fan; 5. Heat dissipation vent; 6. Heat conduction vent; 7. Mounting holes; 8. Quick-release cover; 9. Docking holes; 10. Grille opening; 11. Heat dissipation fins; 12. Vent; 13. Magnetic filter plate; 14. Fixing holes. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1 - Figure 4 The figure shows a highly stable inverter with a sophisticated design and comprehensive functionality. The inverter primarily comprises a sturdy inverter housing 1, multiple operating buttons 2, a clear display 3, and an efficient cooling fan 4. These components are cleverly arranged in different locations within the inverter housing 1 to ensure stable operation and effective heat dissipation.

[0025] Specifically, the operating buttons 2 and display 3 are located at the front of the inverter housing 1, making it easy for the user to operate and view device status. A cooling fan 4 is installed at the lower end of the inverter housing 1 to ensure that heat generated during operation is promptly dissipated. The sidewalls of the inverter housing 1 provide ample space for the cooling fan 4, allowing it to operate effectively and thus achieve the inverter's heat dissipation function.

[0026] To further enhance heat dissipation, mounting holes 7 are designed at the upper corners of the inverter housing 1. These holes 7 allow for connection to a quick-release cover 8, which features docking holes 9 that mate with these holes. The sidewalls of the quick-release cover 8 also feature vents 12 that mate with the heat dissipation ports 5. A magnetic filter plate 13 is attached to these vents. This filter plate 13 filters impurities from the air exhausted through the heat dissipation ports 5, protecting the inverter's internal components from contamination while ensuring effective heat dissipation.

[0027] In order to further improve the heat dissipation efficiency, a heat conduction port 6 is also provided at the upper end of the inverter housing 1. A grille mesh port 10 adapted to the heat conduction port 6 is provided on the quick-release cover 8, and heat dissipation fins 11 are installed on the grille mesh port 10. The heat dissipation fins 11 are connected to the heat-generating components in the inverter housing 1 through a thermally conductive soft strip, and the thermally conductive soft strip extends to the heat-generating components in the inverter housing 1 to ensure that heat can be quickly transferred to the heat dissipation fins 11. The contact end of the heat dissipation fin 11 and the thermally conductive soft strip is coated with thermal grease, which further enhances the heat conduction effect. Multiple heat dissipation fins 11 are equidistantly distributed and fixed to the quick-release cover 8 by bolts. The notch at the lower end of the heat dissipation fin 11 is adapted to the grille mesh port 10 and the heat conduction port 6, thereby accelerating the heat dissipation efficiency of the inverter.

[0028] In order to ensure the tight connection between the quick-release cover 8 and the inverter housing 1, a fixing hole 14 is provided on the side wall of the quick-release cover 8. The fixing hole 14 is opposite to the waist hole on the side wall of the inverter housing 1. The quick-release cover 8 is fixed to the inverter housing 1 by inserting bolts to prevent the magnetic filter plate 13 from being displaced during use. The cross-section of the quick-release cover 8 is designed in an "L" shape, with a recessed design at the corners, which is adapted to the recessed corners of the inverter housing 1 to ensure the stability of the overall structure. A sealing rubber strip is provided at the connection between the quick-release cover 8 and the inverter housing 1, and an anti-slip rubber gasket is provided at the connection between the docking hole 9 and the installation hole 7. These designs not only enhance the sealing, but also improve the durability of the equipment.

[0029] The quick-release cover 8 is made of sheet metal, offering excellent mechanical strength and heat dissipation. A magnetic filter plate 13 is attached to the quick-release cover 8. A sealing ring is installed at the connection between the magnetic filter plate 13 and the quick-release cover 8, ensuring effective filtration while preventing dust from entering the inverter. The magnetic filter plate 13 consists of a frame and a filter screen. The filter screen is fixed to the frame for easy cleaning and replacement.

[0030] In summary, this inverter not only takes into account the needs of heat dissipation and filtration in its structural design, but also makes full optimization in details to ensure the stability and service life of the equipment.

[0031] Usage process: Make sure the inverter is connected to the power supply. Press the "Power On" button in the operation button 2, and the display 3 will show the device status. Use the operation button 2 to adjust the operating parameters of the inverter, such as frequency, voltage, etc. View the current settings and device status through the display 3. During the operation of the device, monitor the device status through the display 3. If necessary, use the operation button 2 to make real-time adjustments. If the display 3 shows a fault code or the device is abnormal, troubleshoot and handle the fault according to the user manual. Press the "Power Off" button in the operation button 2 to turn off the inverter. Confirm that the display 3 shows that the device has stopped running.

[0032] Disassembly and Cleaning Procedure: Ensure the inverter is completely shut down and disconnected from the power supply. Loosen the bolts at mounting holes 14 and remove the quick-release cover 8. Carefully remove the magnetic filter plate 13, taking care not to damage the filter. Clean the filter by gently removing dust with compressed air or a soft brush. If the filter is damaged, replace it with a new one. Use a soft cloth or compressed air to clean the fan blades and surrounding area, ensuring they are free of dust and debris. Use a soft cloth or compressed air to clean the heat sink fins 11, ensuring they are free of dust and debris. If there is thermal grease on the fins, inspect it for signs of aging or loss, and reapply it if necessary. Use a soft cloth to wipe the exterior of the inverter housing 1, ensuring it is free of dust and stains. Reattach the cleaned magnetic filter plate 13 to the quick-release cover 8. Ensure the sealing ring and non-slip rubber gasket are properly installed. Re-secure the quick-release cover 8 to the inverter housing 1 and tighten the bolts. Verify that the sealing rubber strip and non-slip rubber gasket at the connection between the quick-release cover 8 and the inverter housing 1 are intact to ensure a good seal. Reconnect the power supply, turn on the inverter, and check whether the equipment is operating normally. This can ensure that the inverter is clean and in good operation.

[0033] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the electric fusion connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0034] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A frequency converter with high stability, comprising a frequency converter housing (1), a key (2), a display screen (3) and a cooling fan (4), wherein the key (2) and the display screen (3) are located at the front end of the frequency converter housing (1), the cooling fan (4) is installed at the lower end of the frequency converter housing (1), and the side wall of the frequency converter housing (1) is the cooling fan (4), and the frequency converter heat is dissipated by the cooling fan (4), and the characteristics are: The inverter housing (1) is provided with a mounting hole (7) at an upper corner thereof, and a quick-install cover (8) is connected to the mounting hole (7) of the inverter housing (1), and a docking hole (9) adapted to the mounting hole (7) is provided on the quick-install cover (8), and a vent (12) adapted to the heat dissipation port (5) is provided on a side wall of the quick-install cover (8), and a magnetic filter plate (13) is connected to the vent (12), and gas filtration at the heat dissipation port (5) of the inverter is achieved through the magnetic filter plate (13); The upper end of the inverter housing (1) is provided with a heat conducting port (6), and the quick-install cover (8) is provided with a grille mesh opening (10) adapted to the heat conducting port (6). The grille mesh opening (10) is provided with a heat dissipation fin (11), and the heat dissipation efficiency of the inverter is accelerated by the heat dissipation fin (11).

2. The frequency converter with high stability according to claim 1, characterized in that: The side wall of the quick-release cover (8) is provided with a fixing hole (14), which is directly opposite to the waist hole of the side wall of the inverter housing (1). Bolts are inserted into the fixing hole (14) to fix the quick-release cover (8) to the inverter housing (1), thereby preventing the magnetic filter plate (13) from being stably placed.

3. The frequency converter with high stability according to claim 2, characterized in that: The cross section of the quick-release cover (8) is designed to be L-shaped, and the corners of the quick-release cover (8) are designed to be concave and to match the concave corners of the inverter housing (1). A sealing rubber strip is provided at the connection between the quick-release cover (8) and the inverter housing (1), and an anti-slip rubber gasket is provided at the connection between the docking hole (9) and the installation hole (7).

4. The frequency converter with high stability according to claim 3, characterized in that: A thermally conductive strip is provided at the heat-conducting port (6), and the thermally conductive strip extends to the heat-generating component in the inverter housing (1), and the heat dissipation fins (11) are in contact with the thermally conductive strip. The contact ends of the heat dissipation fins (11) and the thermally conductive strip are coated with thermal grease.

5. The frequency converter with high stability according to claim 4, characterized in that: The quick-install cover (8) is a metal plate, and the magnetic filter plate (13) is adsorbed on the quick-install cover (8). A sealing ring is provided at the connection between the magnetic filter plate (13) and the quick-install cover (8), and the magnetic filter plate (13) is divided into a frame and a filter screen, and the filter screen is fixed in the frame.

6. The frequency converter with high stability according to claim 5, characterized in that: The plurality of heat dissipation fins (11) are distributed at equal intervals, and the heat dissipation fins (11) are fixed to the quick-install cover (8) by means of bolts, and the notches at the lower ends of the heat dissipation fins (11) are adapted to the grille openings (10) and the heat conduction openings (6).

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