Installation structure of frequency converter cooling fan

Abstract

The invention discloses an installation structure of a frequency converter cooling fan. The installation structure comprises a cooling fan assembly installed on a radiator shell. The cooling fan assembly comprises a cooling fan body, a fan support and a protective net which are fixedly installed into a whole. Wherein the fan support and the radiator shell are connected in a clamped mode through a plurality of buckles, the cooling fan body is located in the radiator shell, and the protective net is located outside the radiator shell. When the cooling fan body needs to be maintained, the cooling fan assembly can be rapidly detached from the radiator shell, a locking piece does not need to be detached, replacement operation can be rapidly completed, and the maintenance time of the frequency converter cooling fan is obviously shortened.

Description

Technical Field

[0001] The invention belongs to the field of wind power generating sets, and in particular relates to a mounting structure of a frequency converter cooling fan. Background Art

[0002] During the normal operation of industrial inverters, the internal electronic equipment will release a lot of heat. The general solution is to use one (or more) axial flow fans on the inverter heat sink, and use the axial flow fans as cooling fans to transfer heat to the external environment. The use environment of industrial inverter products often has factors that will reduce the life of the cooling fan, such as: particulate matter or harmful gases suspended in the air in the factory, oil leaked from the moving machinery, high temperature in the factory, high frequency vibration in the generator set or train, etc. These harsh use conditions will cause the service life of the inverter cooling fan exposed to these environments to be greatly reduced; once the fan fails and stops working, it will cause the inverter to shut down due to overheating, so that the entire production line or unit is forced to stop running. The efficiency of replacing the faulty fan will greatly affect the downtime of the production line or unit. Reducing the maintenance time will greatly reduce the downtime and reduce the economic losses caused by the failure of the inverter cooling fan.

[0003] In order to reduce the maintenance time of the inverter cooling fan, there is currently a proposal to add a filter device to the air inlet of the inverter cooling fan. The universal filter device can filter pollutants in the environment to reduce the damage of pollutants to the inverter cooling fan. The filter device can be a filter cotton or a metal filter. However, in order to achieve a better filtering effect, the air volume at the fan air inlet will be reduced, thereby affecting the heat dissipation efficiency. In addition, the filter device cannot solve the reduction in the life of the cooling fan caused by vibration. The filter cotton will become brittle and fall off in a long-term high temperature environment, thereby affecting the normal operation of other equipment.

[0004] Therefore, the applicant hopes to seek technical solutions to solve the above technical problems. Summary of the invention

[0005] In view of this, an object of the present invention is to propose an installation structure for an inverter cooling fan. When the cooling fan body needs to be repaired, the cooling fan assembly can be quickly removed from the radiator housing without removing the locking parts. The replacement operation can be completed quickly, which significantly reduces the maintenance time of the inverter cooling fan.

[0006] To this end, the technical solution adopted in the present invention is as follows: A mounting structure for a frequency converter cooling fan comprises a cooling fan assembly mounted on a radiator shell; the cooling fan assembly comprises a cooling fan body, a fan bracket and a protective net fixedly mounted as one body; wherein the fan bracket is snap-connected to the radiator shell by a plurality of snaps, the cooling fan body is located inside the radiator shell, and the protective net is located outside the radiator shell.

[0007] Preferably, the fan bracket is provided with a plurality of buckles, and the radiator shell is provided with a bayonet corresponding to each buckle, wherein each buckle is respectively engaged with the corresponding bayonet on the radiator shell in a limit-positioned manner.

[0008] Preferably, the fan bracket and the radiator housing are respectively provided with bracket connector openings and housing connector openings which are distributed in a corresponding manner, the second connector is inserted into the bracket connector opening, and the first connector is inserted into the housing connector opening, and the second connector and the first connector are tightly connected. The second connector and the first connector involved in the present application are both power connectors, and the plug-in structure can realize quick installation and disassembly.

[0009] Preferably, the bracket connector opening and the shell connector opening both adopt a panel-mounted structure; wherein the fan bracket includes a plug-in opening panel block bent upward along the plate surface of the fan bracket, and the bracket connector opening is located on the plug-in opening panel block.

[0010] Preferably, the left side and the right side of the fan bracket are respectively provided with one or more buckles distributed at intervals; and the bracket connector opening is arranged on the front side or the rear side.

[0011] Preferably, a mounting hole for a locking screw is provided on the front side or the rear side of the fan bracket, and is locked and matched with the radiator housing through the locking screw.

[0012] Preferably, the anti-loosening screw installation hole adopts a non-enclosed opening shape. Preferably, the outer diameter of the opening of the anti-loosening screw installation hole is larger than the inner diameter thereof, which is conducive to quick disassembly and assembly.

[0013] Preferably, the outer periphery of the plate surface of the fan bracket is bent, and the plate surface in the middle is convex relative to the plate surface in the outer periphery, so that the plate surface in the middle is in corresponding contact and fit with the heat dissipation fan body.

[0014] Preferably, the periphery of the plate surface located in the middle, the periphery of the cooling fan body and the periphery of the protective net are respectively provided with a number of corresponding mounting holes, and fastening and locking mounting cooperation is achieved with the mounting holes through fasteners.

[0015] Preferably, the panel surface in the middle is in a quadrilateral shape, and a circular opening is provided on its inner circumference; wherein the cooling fan body is located on the front side of the panel surface in the middle, the protective net is located on the back side of the panel surface in the middle, and the circular opening is arranged corresponding to the protective net.

[0016] The present invention proposes an installation structure that can realize efficient and rapid disassembly and assembly of the inverter cooling fan. The cooling fan body, the fan bracket and the protective net are fixedly installed as a whole to form a cooling fan assembly in advance, and then the cooling fan assembly and the radiator shell are simply and efficiently installed. When the cooling fan body needs to be repaired, the cooling fan assembly can be quickly disassembled from the radiator shell without removing the locking piece. The replacement operation can be completed quickly, significantly reducing the maintenance time of the inverter cooling fan; The present invention also preferably proposes a power connection solution of a plug-in structure, which does not require additional manual work to plug and unplug the power supply of the inverter cooling fan, and the power plug-in and positioning work can be completed in one step. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation structure of the inverter cooling fan according to a specific implementation method of the present application; Figure 2 It is a schematic diagram of the installation structure of the heat dissipation fan assembly 20 in a specific implementation manner of the present application; Figure 3 It is a schematic diagram of the installation structure of the fan bracket 22 according to a specific embodiment of the present application; Figure 4 It is a schematic diagram of the installation structure of the radiator housing 10 according to a specific implementation method of the present application. DETAILED DESCRIPTION

[0018] An embodiment of the present invention discloses an installation structure of an inverter cooling fan, including a cooling fan assembly installed on a radiator shell; the cooling fan assembly includes a cooling fan body, a fan bracket and a protective net that are fixedly installed as an integral whole; wherein the fan bracket and the radiator shell are snap-connected through a plurality of clips, the cooling fan body is located inside the radiator shell, and the protective net is located outside the radiator shell.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Please refer to Figure 1 , Figure 2 Combined with Figure 3 and Figure 4 As shown, a mounting structure of a frequency converter cooling fan comprises a cooling fan assembly 20 mounted on a radiator housing 10; the cooling fan assembly 20 comprises a cooling fan body 21, a fan bracket 22 and a protective net 23 fixedly mounted as one; wherein the fan bracket 22 and the radiator housing 10 are snap-fitted by a plurality of buckles, the cooling fan body 21 is located inside the radiator housing 10, and the protective net 23 is located outside the radiator housing 10; preferably, in this embodiment, a plurality of buckles 30 are provided on the fan bracket 22, and a bayonet 11 corresponding to each buckle is provided on the radiator housing 10, wherein each buckle 30 is respectively limitedly snap-fitted with a corresponding bayonet 11 on the radiator housing 10; the mounting position of the cooling fan assembly 20 is auxiliaryly fixed by the buckle structure on the fan bracket 22, and the mounting direction of the cooling fan assembly 20 can be guided and positioned at the same time; Preferably, in the present embodiment, the fan bracket 22 and the radiator housing 10 are respectively provided with a bracket connector opening 22a and a housing connector opening 10a which are distributed in a corresponding manner, the second connector b is inserted into the bracket connector opening 22a, and the first connector a is inserted into the housing connector opening 10a, and the second connector b and the first connector a are tightly connected to realize power connection; when disassembling and assembling the heat dissipation fan assembly 20, there is no need to manually plug the two connectors (i.e., the second connector b and the first connector a), as long as the fan bracket 22 is installed in place, the two connectors can be installed in place; further preferably, in the present embodiment, the bracket connector opening 22a and the housing connector opening 10a both adopt a panel mounting structure; wherein, the fan bracket 22 includes a connector opening panel block 24 which is bent upward along the plate surface of the fan bracket, and the bracket connector opening 22a is located on the connector opening panel block 24.

[0021] Preferably, in this embodiment, the left side and right side of the fan bracket 22 are respectively provided with one or more spaced-apart buckles 30. Specifically preferably, in this embodiment, the left side and right side of the fan bracket 22 are respectively provided with two spaced-apart buckles 30; and the bracket connector opening 22a is set on the front side.

[0022] Preferably, in the present embodiment, a locking screw mounting hole 25 is provided on the front side or the rear side of the fan bracket 22, and is locked with the radiator housing 10 through a locking screw 26; further preferably, in the present embodiment, the locking screw mounting hole 25 is in a non-enclosed opening shape, and more preferably, in the present embodiment, the opening outer diameter of the locking screw mounting hole 25 is larger than its inner diameter, which is conducive to rapid disassembly and assembly. Specifically preferably, in the present embodiment, the locking screw mounting hole 25 is in a waist-shaped hole shape; when disassembling and assembling the cooling fan assembly 20, it is not necessary to completely remove the locking screw 26, and the disassembly and assembly operation can be carried out by loosening the locking screw 26, and the locking screw 26 left on the radiator housing 10 can also play a role in installation positioning and guidance; Preferably, in this embodiment, the outer periphery of the plate surface of the fan bracket 22 is bent (specifically, two bending structures 22e are provided), and the plate surface 22b located in the middle is convex relative to the plate surface 22c located at the periphery. The distance between the radiator housing 10 and the cooling fan assembly 20 can be flexibly adjusted, so that the plate surface 22b located in the middle is in corresponding contact and cooperation with the cooling fan body 21, thereby ensuring the installation effect while facilitating the heat dissipation effect.

[0023] Preferably, in order to achieve a quick installation effect for the cooling fan assembly 20, in the present embodiment, the outer periphery of the middle plate surface, the outer periphery of the cooling fan body 21 and the outer periphery of the protective net 23 are respectively provided with a number of corresponding mounting holes, and fasteners (specifically screws 27 and nuts 28) are used to fasten and lock the mounting holes; further preferably, in the present embodiment, the middle plate surface 22b is in a quadrilateral shape, and a circular opening 22d is provided on its inner periphery; wherein the cooling fan body 21 is located on the front side of the middle plate surface 22b, the protective net 23 is located on the back side of the middle plate surface 22b, and the circular opening 22d is corresponding to the protective net 23, which is conducive to achieving good heat dissipation and installation effects at the same time.

[0024] The installation and disassembly process of this embodiment is further described in combination with the above installation structure provided in this embodiment: See also Figure 2 As shown, during the initial installation, the cooling fan body 21 and the protective net 23 are respectively fixed to the fan bracket 22 by means of fasteners such as screws 27 and nuts 28, and then the second connector b is inserted into the bracket connector opening 22a on the fan bracket 22 to form the cooling fan assembly 20; then, according to Figure 1Assemble the cooling fan assembly 20 to the radiator housing 10 in the assembly direction shown, and insert the cooling fan assembly 20 to the bottom along the buckle 30 to achieve a limited snap connection with the radiator housing 10; at this time, the first plug-in a and the second plug-in b have been tightly connected; finally, tighten a locking screw 26 according to the torque required by the production process to complete the installation of the inverter cooling fan.

[0025] When the cooling fan assembly 20 needs to be replaced on site, first loosen the anti-loosening screw 26 by about 3 to 5 mm. At this time, the cooling fan assembly 20 has the freedom to slide toward the side of the radiator housing 10. Then, pull out the cooling fan assembly 20 in the direction of the buckle 30 and lift it up. At this time, the failed cooling fan assembly 20 has been removed. Replace the spare cooling fan assembly 20 according to the Figure 1 Assemble it to the radiator housing 10 in the assembly direction shown, insert the cooling fan assembly 20 to the bottom along the buckle direction, and finally tighten the loosened anti-loosening screws 26 according to the torque required by the production process to quickly complete the replacement of the cooling fan assembly 20.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mounting structure for a frequency converter cooling fan, characterized in that: It includes a cooling fan assembly installed on a radiator shell; the cooling fan assembly includes a cooling fan body, a fan bracket and a protective net that are fixedly installed as an integral whole; wherein the fan bracket and the radiator shell are snap-connected through a plurality of buckles, the cooling fan body is located inside the radiator shell, and the protective net is located outside the radiator shell.

2. The installation structure of the inverter cooling fan according to claim 1 is characterized in that: The fan bracket is provided with a plurality of buckles, and the radiator shell is provided with a bayonet corresponding to each buckle, wherein each buckle is respectively limitedly engaged with the corresponding bayonet on the radiator shell.

3. The installation structure of the inverter cooling fan according to claim 1, characterized in that: The fan bracket and the radiator shell are respectively provided with a bracket connector opening and a shell connector opening which are distributed correspondingly. The second plug-in is inserted into the bracket connector opening, and the first plug-in is inserted into the shell connector opening. The second plug-in is tightly connected to the first plug-in.

4. The installation structure of the inverter cooling fan according to claim 3, characterized in that: The bracket connector opening and the shell connector opening both adopt a panel mounting structure; wherein the fan bracket includes a plug-in opening panel block bent upward along the plate surface of the fan bracket, and the bracket connector opening is located on the plug-in opening panel block.

5. The installation structure of the inverter cooling fan according to claim 3, characterized in that: The left side and the right side of the fan bracket are respectively provided with one or more buckles distributed at intervals; and the bracket connector opening is arranged on the front side or the rear side.

6. The installation structure of the inverter cooling fan according to claim 5, characterized in that: The front side or rear side of the fan bracket is provided with a mounting hole for anti-loosening screws, and is locked and matched with the radiator shell through the anti-loosening screws.

7. The installation structure of the inverter cooling fan according to claim 6, characterized in that: The anti-loosening screw installation hole adopts a non-enclosed opening shape. Preferably, the outer diameter of the opening of the anti-loosening screw installation hole is larger than the inner diameter thereof, which is conducive to quick disassembly and assembly.

8. The installation structure of the inverter cooling fan according to claim 1, characterized in that: The outer periphery of the plate surface of the fan bracket is bent, and the plate surface in the middle is convex relative to the plate surface in the outer periphery, so that the plate surface in the middle is in contact with and matched with the heat dissipation fan body.

9. The installation structure of the inverter cooling fan according to claim 8, characterized in that: The outer periphery of the plate surface in the middle, the outer periphery of the heat dissipation fan body and the outer periphery of the protective net are respectively provided with a plurality of corresponding mounting holes, and fastening and locking mounting cooperation is achieved with the mounting holes through fasteners.

10. The installation structure of the inverter cooling fan according to claim 8 or 9, characterized in that: The panel surface in the middle is in a quadrilateral shape, and a circular opening is provided on its inner circumference; wherein the cooling fan body is located on the front side of the panel surface in the middle, the protective net is located on the back side of the panel surface in the middle, and the circular opening is arranged corresponding to the protective net.

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