Frequency converter with protection structure

Abstract

The utility model discloses a frequency converter with a protection structure, which relates to the technical field of frequency converter installation and comprises an assembly box, a first air grid and a second air grid are respectively arranged on the left side wall and the right side wall of the assembly box, and dust removal mechanisms are arranged on the outer sides of the first air grid and the second air grid. A ventilation block is fixedly mounted in the left side of the first air grid, a mounting box is fixedly mounted at the upper end of the ventilation block, and a frequency converter is fixedly mounted in the mounting box through four sets of fastening bolts. According to the utility model, by starting the first fan and the second fan, air at the left side forms circulation through the dust removal plate, the second air grid and the main installation chamber to dissipate heat of components on the installation plate, air at the right side forms circulation through the dust removal plate, the first air grid, the ventilation slot and the frequency converter installation chamber to dissipate heat of the frequency converter independently, so that the heat dissipation efficiency is high; and the ventilation holes are communicated with the main mounting chamber, so that the main mounting chamber and the frequency converter mounting chamber can perform air circulation mutually, and the heat dissipation efficiency is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter installation, in particular to a frequency converter with a protection structure. Background Art

[0002] The frequency converter is an electric power control device that applies frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification, filtering, inversion, braking unit, drive unit +, detection unit, microprocessor unit, etc.

[0003] Environmental requirements for inverter installation:

[0004] 1. The working temperature is 0-55℃, but in order to ensure the safety and reliability of the work, the temperature is generally controlled below 40℃.

[0005] 2. In the control box, the inverter is installed on the upper part of the control box, and the installation requirements in the product manual must be strictly followed. Components that are prone to heat should not be installed around the inverter as much as possible.

[0006] 3. The ambient temperature of the inverter installation should not change too much to prevent condensation inside the inverter and affect the use of the inverter.

[0007] The inverter of the prior art has poor heat dissipation. If heat is dissipated through a heat dissipation mechanism, power consumption is required, and the heat dissipation mechanism itself generates heat, which will cause heat transfer, and the heat dissipation range is limited. Utility Model Content

[0008] In order to overcome the above-mentioned defects in the prior art, the utility model provides a frequency converter with a protection structure.

[0009] The technical solution adopted by the utility model to solve its technical problems is: a frequency converter with a protective structure, including an assembly box, a first air grille and a second air grille are respectively arranged on the left and right side walls of the assembly box, a dust removal mechanism is arranged on the outer sides of the first air grille and the second air grille, a ventilation block is fixedly installed inside the left side of the first air grille, an installation box is fixedly installed on the upper end of the ventilation block, and the frequency converter is fixedly installed inside the installation box by four groups of fastening bolts.

[0010] Furthermore, the dust removal mechanism includes a mounting frame, and the mounting frame is fixedly installed on the left and right outer side walls of the assembly box in a group, and the dust removal plate is detachably installed in the upper and lower parts of the mounting frame.

[0011] Furthermore, a ventilation slot is arranged inside the ventilation block, and a frequency converter installation room is arranged inside the installation box, and the frequency converter installation room is connected and communicated with the ventilation slot.

[0012] Furthermore, a main installation chamber is arranged inside the assembly box, a plurality of ventilation holes are arranged on the side wall of the installation box, and the inverter installation chamber is connected to the main installation chamber through the ventilation holes.

[0013] Furthermore, a first switch door is movably installed at the front end of the general installation room, a first door handle is arranged on the right side of the first switch door, a first fan is arranged on the first switch door, and the first fan is connected to the general installation room.

[0014] Furthermore, a second switch door is movably installed on the front side of the installation box, a second door handle is provided on the right side of the second switch door, a second fan is provided on the second switch door, and the second fan is connected to the inverter installation room.

[0015] Furthermore, several groups of mounting plates are fixedly installed in the assembly box, and the mounting plates are used to install other components.

[0016] The beneficial effect of the utility model is that by starting the first fan and the second fan, the wind on the left side forms a circulation through the dust removal plate, the second wind grille and the main installation chamber to dissipate the heat of the components on the installation plate, and the wind on the right side forms a circulation through the dust removal plate, the first wind grille, the ventilation slots and the inverter installation chamber to dissipate the heat of the inverter alone, with high heat dissipation efficiency, and is connected with the main installation chamber through the ventilation holes, so that the main installation chamber and the inverter installation chamber can circulate air with each other, further enhancing the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a front cross-sectional view of the utility model;

[0019] Figure 2 It is an enlarged view of point A of the utility model;

[0020] Figure 3 It is the front view of the utility model.

[0021] In the figure: 1. assembly box, 101. main installation room, 2. first air grille, 3. second air grille, 4. mounting frame, 5. dust removal plate, 6. ventilation block, 601. ventilation slot, 7. mounting box, 701. ventilation hole, 702. inverter installation room, 8. inverter, 9. fastening bolts, 10. mounting plate, 11. first switch door, 12. first door handle, 13. first fan, 14. second switch door, 15. second door handle, 16. second fan. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0023] like Figure 1 and Figure 2 As shown, the utility model includes an assembly box 1, and a first air grille 2 and a second air grille 3 are respectively arranged on the left and right side walls of the assembly box 1, and a dust removal mechanism is arranged on the outer sides of the first air grille 2 and the second air grille 3, and the dust removal mechanism includes a mounting frame 4, and the mounting frame 4 is fixedly installed on the left and right outer side walls of the assembly box 1 by bolts. A dust removal plate 5 can be detachably installed on the upper and lower insides of the mounting frame 4, and the air entering the first air grille 2 and the second air grille 3 is dusted by the dust removal plate 5.

[0024] like Figure 1 and Figure 2 As shown, a ventilation block 6 is fixedly installed inside the left side of the first air grille 2, and an installation box 7 is fixedly installed on the upper end of the ventilation block 6. A ventilation slot 601 is arranged inside the ventilation block 6, and an inverter installation room 702 is arranged inside the installation box 7. The inverter installation room 702 is connected and communicated with the ventilation slot 601, and the right side of the ventilation slot 601 is connected and communicated with the first air grille 2.

[0025] like Figure 1 and Figure 2 As shown, a main installation chamber 101 is provided inside the assembly box 1, and several groups of ventilation holes 701 are provided on the side wall of the installation box 7. The inverter installation chamber 702 is connected to the main installation chamber 101 through the ventilation holes 701, and the inverter 8 is fixedly installed inside the inverter installation chamber 702 by four groups of fastening bolts 9.

[0026] like Figures 1 to 3 As shown, a first switch door 11 is movably installed at the front end of the general installation room 101, a first door handle 12 is arranged on the right side of the first switch door 11, a first fan 13 is arranged on the first switch door 11, and the first fan 13 is connected and communicated with the general installation room 101, a second switch door 14 is movably installed on the front side of the installation box 7, a second door handle 15 is arranged on the right side of the second switch door 14, a second fan 16 is arranged on the second switch door 14, and the second fan 16 is connected and communicated with the inverter installation room 702.

[0027] Several groups of mounting plates 10 are fixedly installed in the assembly box 1 , and other components are installed on the mounting plates 10 .

[0028] When the utility model is in use, the inverter 8 is installed in the inverter installation chamber 702 by opening the second switch door 14, and then the second switch door 14 is closed. The first switch door 11 is opened to install other components on the installation plate 10, and then the first switch door 11 is closed, and the wiring harness is extended out of the sealing opening along the sealing setting, and then the first fan 13 and the second fan 16 are started. The wind on the left side forms a circulation through the dust removal plate 5, the second wind grid 3 and the main installation chamber 101 to dissipate the heat of the components on the installation plate 10, and the wind on the right side forms a circulation through the dust removal plate 5, the first wind grid 2, the ventilation slot 601 and the inverter installation chamber 702 to dissipate the heat of the inverter 8 alone, with high heat dissipation efficiency. Moreover, the ventilation hole 701 is connected with the main installation chamber 101, so that the main installation chamber 101 and the inverter installation chamber 702 can circulate air with each other, thereby further enhancing the heat dissipation efficiency.

[0029] Assembly box 1, main installation room 101, first air grille 2, second air grille 3, mounting frame 4, dust removal plate 5, ventilation block 6, ventilation slot 601, installation box 7, ventilation hole 701, inverter installation room 702, inverter 8, fastening bolt 9, mounting plate 10, first switch door 11, first door handle 12, first fan 13, second switch door 14, second door handle 15, second fan 16

[0030] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A frequency converter with a protective structure, comprising an assembly box (1), characterized in that: A first air grille (2) and a second air grille (3) are respectively arranged on the left and right side walls of the assembly box (1); dust removal mechanisms are arranged on the outer sides of the first air grille (2) and the second air grille (3); a ventilation block (6) is fixedly installed inside the left side of the first air grille (2); an installation box (7) is fixedly installed on the upper end of the ventilation block (6); and a frequency converter (8) is fixedly installed inside the installation box (7) by four sets of fastening bolts (9).

2. The frequency converter with a protection structure according to claim 1, characterized in that: The dust removal mechanism comprises a mounting frame (4), wherein one set of the mounting frame (4) is fixedly mounted on the left and right outer side walls of the assembly box (1), and a dust removal plate (5) is detachably mounted on the upper and lower sides of the mounting frame (4).

3. The frequency converter with a protection structure according to claim 1, characterized in that: The ventilation block (6) is provided with a ventilation slot (601) inside, and the installation box (7) is provided with a frequency converter installation chamber (702) inside, and the frequency converter installation chamber (702) is connected to and communicates with the ventilation slot (601).

4. The frequency converter with a protection structure according to claim 3, characterized in that: The assembly box (1) is provided with a general installation chamber (101) inside, a plurality of groups of ventilation holes (701) are provided on the side wall of the installation box (7), and the frequency converter installation chamber (702) is connected to the general installation chamber (101) through the ventilation holes (701).

5. The frequency converter with a protection structure according to claim 4, characterized in that: A first switch door (11) is movably installed at the front end of the main installation room (101); a first door handle (12) is arranged on the right side of the first switch door (11); a first fan (13) is arranged on the first switch door (11); and the first fan (13) is connected to and communicates with the main installation room (101).

6. The frequency converter with a protection structure according to claim 5, characterized in that: A second switch door (14) is movably installed on the front side of the installation box (7), a second door handle (15) is arranged on the right side of the second switch door (14), a second fan (16) is arranged on the second switch door (14), and the second fan (16) is connected to the inverter installation room (702).

7. The frequency converter with a protection structure according to claim 6, characterized in that: A plurality of groups of mounting plates (10) are fixedly mounted in the assembly box (1), and other components are mounted on the mounting plates (10).

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