A frequency converter housing

Abstract

The utility model discloses a frequency converter housing in the technical field of frequency converters, comprising a frequency converter housing, an air inlet, an air outlet and a cooling fan, wherein the upper and lower inner walls of the air inlet are both provided with mounting grooves, a fixing frame is provided in the mounting groove, a woven bag is provided in the middle of the fixing frame, metal shrapnel is provided on the upper and lower sides of the fixing frame, a dustproof net is provided on the right side of the inner wall of the air inlet, a pressing plate is provided on the fixing frame, a through hole is provided on the pressing plate, a threaded hole is provided in the middle of the fixing frame, a screw is provided in the through hole, an arc groove is provided on the right side of the bottom of the pressing plate, and an arc pressure rod is provided on the right side of the top of the fixing frame. After the screws are removed, the edge of the woven bag pressed on the bottom of the pressing plate can be disassembled, the water-absorbing resin in the woven bag can be taken out, new water-absorbing resin is filled, and the pressing plate is fixed to complete the rapid replacement of the water-absorbing resin in the woven bag.

Description

Technical Field

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

[0002] The inverter is an electric power control device used to control the AC motor. The inverter generates heat during operation, and a cooling fan is required to dissipate the heat of the inverter. The cooling fan will also blow water vapor and dust in the air into the inverter during the cooling process of the inverter. For example, in a plastic shell structure of an inverter disclosed in Chinese patent literature (patent number: CN202020352529.0), the dustproof guide plate and the moisture-proof silicone plate are not arranged in the same vent, and the cooling fan is arranged at one of the vents. If the cooling fan supplies air into the inverter, the vent where the moisture-proof silicone plate is located becomes an outlet, and the moisture-proof silicone plate cannot absorb water vapor in the air entering the inverter. If the cooling fan supplies air outside the inverter, the dustproof net will not be able to play a dust-proof effect, and the dustproof net needs to be cleaned frequently. The moisture-proof silicone plate ages over time and needs to be replaced, and the above patent cannot replace the dustproof net and the moisture-proof silicone plate.

[0003] To this end, we propose a frequency converter housing. Utility Model Content

[0004] The purpose of the utility model is to provide a frequency converter housing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a frequency converter housing, comprising a frequency converter housing, an air inlet, an air outlet and a cooling fan, the upper and lower inner walls of the air inlet are provided with installation grooves, a fixing frame is provided in the installation groove, a woven bag is provided in the middle of the fixing frame, metal springs are provided on the upper and lower sides of the fixing frame, a dustproof net is provided on the right side of the inner wall of the air inlet, a pressure plate is provided on the fixing frame, a through hole is provided on the pressure plate, a threaded hole is provided in the middle of the fixing frame, a screw is provided in the through hole, an arc groove is provided on the right side of the bottom of the pressure plate, and an arc pressure rod is provided on the right side of the top of the fixing frame.

[0006] Preferably, the heat dissipation fan is arranged in the inverter housing, and the heat dissipation fan is installed at one end of the air outlet and the air inlet.

[0007] Preferably, the air inlet is arranged at the lower left part of the inverter housing, and the air outlet is arranged at the upper right part of the inverter housing.

[0008] Preferably, two groups of pressing plates are provided, and bumps are provided on the tops of the two groups of pressing plates.

[0009] Preferably, the woven bag is filled with water-absorbing resin.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the protrusion drives the fixing frame to move upward and disengage from the mounting slot. After the fixing frame is disengaged from the mounting slot, the dust screen can be directly cleaned and the screws can be removed. After the screws are removed, the pressure plate is moved upward to remove the edge of the woven bag pressed on the bottom of the pressure plate. The woven bag can be disassembled, the water-absorbent resin in the woven bag is taken out, and new water-absorbent resin is filled. The screws are installed into the threaded holes through the through holes, the screws are tightened, and the pressure plate is tightened to quickly fix the woven bag, thereby completing the rapid replacement of the water-absorbent resin in the woven bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the installation structure of the fixed frame of the utility model;

[0013] Figure 3 This is a schematic diagram of the fixed frame structure of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the pressing plate of the utility model.

[0015] In the figure: 1. Inverter housing; 2. Air inlet; 3. Air outlet; 4. Cooling fan; 5. Mounting slot; 6. Fixing frame; 7. Woven bag; 8. Dust net; 9. Metal spring; 10. Bump; 11. Pressure plate; 12. Through hole; 13. Threaded hole; 14. Screw; 15. Arc groove; 16. Arc pressure rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4The utility model provides a technical solution: a frequency converter housing, including a frequency converter housing 1, an air inlet 2, an air outlet 3 and a cooling fan 4, the upper and lower inner walls of the air inlet 2 are both provided with mounting grooves 5, a fixing frame 6 is provided in the mounting groove 5, a woven bag 7 is provided in the middle of the fixing frame 6, metal springs 9 are provided on the upper and lower sides of the fixing frame 6, a dustproof net 8 is provided on the right side of the inner wall of the air inlet 2, a pressing plate 11 is provided on the fixing frame 6, a through hole 12 is provided on the pressing plate 11, a threaded hole 13 is provided in the middle of the fixing frame 6, a screw 14 is provided in the through hole 12, an arc groove 15 is provided on the right side of the bottom of the pressing plate 11, and an arc pressure rod 16 is provided on the right side of the top of the fixing frame 6. If the fixing frame 6 needs to be disassembled, the protrusion 10 is pushed upward through the protrusion 10, and the protrusion 10 drives the fixing frame 6 to move upward and disengage from the mounting groove 5. After the fixing frame 6 is disengaged from the mounting groove 5, it can be directly The dust net 8 is cleaned, and the screw 14 is turned with a screwdriver. The screw 14 is disengaged from the threaded hole 13 and the screw 14 is removed. After the screw 14 is removed, the pressing plate 11 is moved upward to remove the edge of the woven bag 7 pressed on the bottom of the pressing plate 11, and the woven bag 7 can be removed. The water-absorbing resin in the woven bag 7 is taken out and filled with new water-absorbing resin. The two ends of the woven bag 7 are placed on the fixed frame 6 so that the pressing plate 11 presses the edge of the woven bag 7. The arc-shaped pressing rod 15 cooperates with the arc-shaped groove 15 set at the bottom of the pressing plate 11 to fix the woven bag 7 well without loosening. The screw 14 is installed into the threaded hole 13 through the through hole 12, and the screw 14 is tightened. The pressing plate 7 is tightened to quickly fix the woven bag 7, thereby completing the rapid replacement of the water-absorbing resin in the woven bag 7, and the fixed frame 6 is installed into the mounting groove 5. The inner wall of the mounting groove 5 squeezes the metal spring sheets 9 set on both sides of the fixed frame 6 to fix the fixed frame 6.

[0018] Wherein, the cooling fan 4 is arranged in the inverter housing 1, and the cooling fan 4 is installed at one end of the air outlet 3 and the air inlet 2. The air inlet 2 is arranged at the lower left part of the inverter housing 1, and the air outlet 3 is arranged at the upper right part of the inverter housing 1. When the cooling fan 4 works, air is drawn into the inverter housing 1, and the air passes through the woven bag 7. The water-absorbing resin in the woven bag 7 absorbs water vapor in the air. In order to maintain air permeability, the woven bag 7 and the water-absorbing resin filled therein simply block dust and cannot be filtered. Therefore, when the air passes through the dustproof net 8, the dustproof net 8 filters the dust in the air and enters the bottom of the inverter. The air moves upward and is discharged through the air outlet 3 at the upper part of the inverter housing 1, so that the air completes the circulation in the inverter, and the inverter is better cooled;

[0019] The pressing plates 11 are provided with two groups, and the two groups of pressing plates 11 fix the two ends of the woven bag 7. The tops of the two groups of pressing plates 11 are provided with protrusions 10. By pushing the protrusions 10, the protrusions 10 drive the fixing frame 6 to move out of the mounting groove 5, and the fixing frame 6 is disassembled;

[0020] The woven bag 7 is filled with water-absorbing resin, which is a highly water-absorbing resin. The water-absorbing resin absorbs water vapor from the air holes to keep the inverter dry.

[0021] Working principle: The fixed frame 6 needs to be disassembled. Push the convex block 10 upward through the convex block 10. The convex block 10 drives the fixed frame 6 to move upward and disengage from the mounting slot 5. After the fixed frame 6 is disengaged from the mounting slot 5, the dust screen 8 can be directly cleaned. Use a screwdriver to turn the screw 14. The screw 14 is disengaged from the threaded hole 13. The screw 14 is disassembled. After the screw 14 is removed, move the pressing plate 11 upward and disassemble the edge of the woven bag 7 pressed on the bottom of the pressing plate 11. The woven bag 7 can be disassembled, the water-absorbing resin in the woven bag 7 is taken out, and new water-absorbing resin is filled. The two ends of the bag 7 are placed on the fixing frame 6 so that the pressure plate 11 presses the edge of the woven bag 7. The arc pressure rod 15 cooperates with the arc groove 15 set at the bottom of the pressure plate 11 to fix the woven bag 7 well without loosening. The screw 14 is passed through the through hole 12 and installed into the threaded hole 13. The screw 14 is tightened and the pressure plate 7 is tightened to quickly fix the woven bag 7, thereby completing the rapid replacement of the water-absorbing resin in the woven bag 7. The fixing frame 6 is installed into the installation groove 5. The inner wall of the installation groove 5 squeezes the metal spring sheets 9 set on both sides of the fixing frame 6 to fix the fixing frame 6.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frequency converter housing, comprising a frequency converter housing (1), an air inlet (2), an air outlet (3) and a cooling fan (4), characterized in that: The upper and lower inner walls of the air inlet (2) are both provided with mounting grooves (5), a fixing frame (6) is provided in the mounting groove (5), a woven bag (7) is provided in the middle of the fixing frame (6), metal springs (9) are provided on the upper and lower sides of the fixing frame (6), a dust screen (8) is provided on the right side of the inner wall of the air inlet (2), a pressure plate (11) is provided on the fixing frame (6), a through hole (12) is provided on the pressure plate (11), a threaded hole (13) is provided in the middle of the fixing frame (6), a screw (14) is provided in the through hole (12), an arc groove (15) is provided on the right side of the bottom of the pressure plate (11), and an arc pressure rod (16) is provided on the right side of the top of the fixing frame (6).

2. The inverter housing according to claim 1, characterized in that: The heat dissipation fan (4) is arranged in the inverter housing (1), and the heat dissipation fan (4) is installed at one end of the air outlet (3) and the air inlet (2).

3. The inverter housing according to claim 1, characterized in that: The air inlet (2) is arranged at the lower left part of the inverter housing (1), and the air outlet (3) is arranged at the upper right part of the inverter housing (1).

4. The inverter housing according to claim 1, characterized in that: Two groups of the pressing plates (11) are provided, and bumps (10) are provided on the tops of the two groups of pressing plates (11).

5. The inverter housing according to claim 1, characterized in that: The woven bag (7) is filled with water-absorbing resin.

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