Air-cooled frequency converter

Abstract

The utility model discloses an air-cooled frequency converter, which comprises a cylindrical shell, a frequency converter assembly is arranged in the shell, a plurality of vertical radiating fins are arranged on the outer wall of the shell and wrap the periphery of the shell, a control panel is arranged on the top of the shell, and a protective cover is arranged on the periphery of the top surface of the shell through screws. An opening for containing the control panel is formed in the protective cover, and the lower end of the shell is connected with a first flange and detachably connected with a cooling fan through the first flange. And the periphery of the shell is fully surrounded by the heat dissipation fins, so that the heat dissipation area is greatly increased, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to an air-cooled frequency converter. Background Art

[0002] The frequency converter is an electric power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.

[0003] Long-term operation of the inverter causes a significant increase in heat. If the inverter is not cooled in time, it is easy to cause damage to the electronic components. The existing inverters either use heat dissipation fins for heat dissipation, but the heat dissipation fins are either set at the rear of the shell or at the side of the shell, resulting in a small heat dissipation fin area and poor heat dissipation effect. Some inverters have a cooling fan installed in the inverter, but the fan is installed in the inverter at the factory, which makes it impossible to select it according to actual conditions and is not easy to disassemble and repair. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an air-cooled frequency converter to solve the problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A wind-cooled inverter comprises a cylindrical shell, an inverter assembly is installed in the shell, a plurality of vertical heat dissipation fins are provided on the outer wall of the shell, and the heat dissipation fins are covered on the outer periphery of the shell, a control panel is installed on the top of the shell, a protective cover is installed on the outer periphery of the top surface of the shell by screws, and an opening for accommodating the control panel is provided on the protective cover, a first flange is connected to the lower end of the shell, and a heat dissipation fan is detachably connected to the first flange.

[0007] Preferably, the heat dissipation fan includes a cylinder, a second flange connected to both ends of the cylinder, a fan body installed in the cylinder, and a dustproof net installed at the bottom of the cylinder, and the second flange at the upper end of the cylinder is connected to the first flange.

[0008] Preferably, a wiring port is provided on the top of the shell, an inner wall of the wiring port is provided with an internal thread, and the wiring port and the control panel are both electrically connected to the inverter assembly.

[0009] Preferably, a groove is provided on the top of the protective cover, an opening is opened in the groove, and a wiring hole matching the wiring port is provided in the groove below the opening. When the protective cover is installed on the shell, the wiring hole is aligned with the wiring port.

[0010] Preferably, a transparent cover plate is hinged in the groove of the protective cover, and a plurality of wire-clip grooves matching the wiring holes are provided at the lower part of the transparent cover plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The heat dissipation fins completely surround the shell, greatly increasing the heat dissipation area and thus improving the heat dissipation effect.

[0013] When the heat dissipation effect needs to be increased, the cooling fan can be installed on the first flange, and the cooling effect can be further improved through the dual effects of the cooling fan and the cooling fins. The cooling fan and the inverter are separated and can be installed optionally, which is easy to match and convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 It is an exploded view of the utility model;

[0016] In the figure: 1-housing, 2-heat sink, 3-control panel, 4-protective cover, 5-opening, 6-first flange, 7-cooling fan, 701-cylinder, 702-second flange, 703-fan body, 704-dustproof net, 8-wiring port, 9-wiring hole, 10-transparent cover, 11-wire slot. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1

[0019] See also Figure 1 and Figure 2 A wind-cooled inverter includes a cylindrical shell 1, in which an inverter component is installed. The outer wall of the shell 1 is provided with a plurality of vertical heat dissipation fins 2, and the heat dissipation fins 2 are wrapped around the outer periphery of the shell 1. The heat dissipation fins 2 fully surround the shell 1, greatly increasing the heat dissipation area. In order to further improve the heat dissipation effect, the heat dissipation fins can be made of metal material to facilitate the transfer of heat to the outside.

[0020] A control panel 3 is installed on the top of the shell 1, and a wiring port 8 is provided below the control panel 3. The inner wall of the wiring port is provided with an internal thread. The control panel 3 and the wiring port 8 are both electrically connected to the inverter assembly. A protective cover 4 is installed on the periphery of the top surface of the shell 1 by screws. A groove is provided on the top of the protective cover 4, and an opening 5 is provided in the groove. A wiring hole 9 matching the wiring port is provided below the opening in the groove. When the protective cover 4 is installed on the shell 1, the wiring hole 9 is aligned with the wiring port 8, and the control panel is located in the opening 5.

[0021] The lower end of the housing 1 is connected to a first flange 6, and a cooling fan 7 is detachably connected to the first flange 6. Specifically, the cooling fan 7 includes a cylinder 701, a second flange 702 connected to both ends of the cylinder, a fan body 703 installed in the cylinder, and a dust screen 704 installed at the bottom of the cylinder. The second flange 702 at the upper end of the cylinder 701 is connected to the first flange 6. When the cooling fan is not needed, the first flange 6 is connected to the outside to fix the inverter. When the heat dissipation effect is to be increased, the cooling fan can be installed on the first flange, and the heat dissipation effect can be further improved through the dual effects of the cooling fan and the cooling fins. The cooling fan and the inverter are separated and can be selected, which is easy to match and convenient for later maintenance.

[0022] Example 2

[0023] The difference between this embodiment and the first embodiment is that a transparent cover plate 10 is hinged in the groove of the protective cover 4, and a plurality of wire clamping grooves 11 matching the wiring holes 9 are provided at the bottom of the transparent cover plate 10. The transparent cover plate 10 is convenient for viewing the numbers displayed on the control panel and can protect the control panel. When connecting the wires, the wires pass through the wiring holes 9 and are inserted into the wiring ports 8, and then a screw is inserted into the wiring holes 9 and the screw is screwed so that the inner end of the screw enters the wiring ports 8 to fix the wires, and the rubber part of the wires is clamped in the wire clamping grooves 11, which further tightens the wires to prevent them from falling and prevents adjacent wires from getting tangled.

[0024] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0025] 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. An air-cooled frequency converter, characterized in that: The invention comprises a cylindrical shell (1), wherein a frequency converter assembly is installed in the shell (1), the outer wall of the shell (1) is provided with a plurality of vertical heat dissipation fins (2), and the heat dissipation fins (2) are wrapped around the outer periphery of the shell (1), a control panel (3) is installed on the top of the shell (1), a protective cover (4) is installed on the outer periphery of the top surface of the shell (1) by screws, and an opening (5) for accommodating the control panel is provided on the protective cover (4), and a first flange (6) is connected to the lower end of the shell (1), and a heat dissipation fan (7) is detachably connected to the first flange (6).

2. The air-cooled inverter according to claim 1, characterized in that: The heat dissipation fan (7) comprises a cylinder (701), a second flange (702) connected to both ends of the cylinder, a fan body (703) installed in the cylinder, and a dustproof net (704) installed at the bottom of the cylinder. The second flange (702) at the upper end of the cylinder (701) is connected to the first flange (6).

3. The air-cooled inverter according to claim 2, characterized in that: The top of the housing (1) is provided with a wiring port (8), the inner wall of the wiring port is provided with an internal thread, and the wiring port (8) and the control panel (3) are both electrically connected to the frequency converter assembly.

4. The air-cooled inverter according to claim 3, characterized in that: The top of the protective cover (4) is provided with a groove, the opening (5) is opened in the groove, and a wiring hole (9) matching the wiring port is provided below the opening in the groove. When the protective cover (4) is installed on the housing (1), the wiring hole (9) is aligned with the wiring port (8).

5. The air-cooled inverter according to claim 4, characterized in that: A transparent cover plate (10) is hinged in the groove of the protective cover (4), and a plurality of wire clamping grooves (11) matching the wiring holes (9) are arranged at the bottom of the transparent cover plate (10).

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