Shell assembly of frequency converter and frequency converter

Abstract

The utility model provides a shell assembly of a frequency converter and the frequency converter. The shell assembly of the frequency converter comprises a body, a lifting cover and a radiator mounting rack, a wiring cavity is formed in the body, an opening is formed in one side of the wiring cavity, and a plurality of terminals and a plurality of identification parts are arranged in the wiring cavity; the lifting cover is movably or detachably connected with the body; the radiator installation frame is arranged in the body, an installation plate located in the wiring cavity is arranged on the radiator installation frame, and the terminal and the identification part are both arranged on the side, facing the opening, of the installation plate. According to the shell assembly of the frequency converter, when the wire is connected to the terminal, the identification part and the terminal can be directly observed from the opening, so that a user can conveniently correspond the terminal to the identification part, the condition of wiring error of the user is avoided, and the safety is improved; in addition, in cooperation with the structural design of the radiator mounting frame, the interior of the body is simple and reliable, and the welding process is reduced.

Description

Technical Field

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

[0002] The variable-frequency drive (VFD) is a 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. The variable-frequency drive is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, and microprocessor unit. The variable-frequency drive adjusts the voltage and frequency of the output power supply by the opening and closing of the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the variable-frequency drive has many protection functions, such as over-current, over-voltage, overload protection, etc.

[0003] When wiring the terminals of current inverters, the terminals are usually set inside the casing, while the labels used to identify the terminals are usually located on the outer surface of the casing. This makes it difficult for users to observe the correspondence between the labels and the terminals, which can easily lead to wrong wiring, possibly causing equipment damage and personal injury. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a housing component of a frequency converter and a frequency converter.

[0005] An embodiment of the utility model provides a housing assembly of a frequency converter, comprising: a body, a flip cover and a radiator mounting frame;

[0006] A wiring cavity is provided in the body, an opening is provided on one side of the wiring cavity, and a plurality of terminals and a plurality of identification parts are provided in the wiring cavity;

[0007] The flip cover is movably or detachably connected to the body and closes the opening;

[0008] The radiator mounting frame is arranged in the body and divides the interior of the body into a containing cavity and the wiring cavity. The radiator mounting frame is provided with a mounting plate located in the wiring cavity.

[0009] The terminal and the identification portion are both arranged on a side of the mounting plate facing the opening, and the identification portion is correspondingly arranged on one side of the terminal.

[0010] In some optional embodiments, the angle between the surface of the mounting plate facing the opening and the direction of the opening is 85°-95°.

[0011] In some optional embodiments, the mounting plate is formed by stamping a portion of the structure of the radiator mounting frame through sheet metal.

[0012] In some optional embodiments, the identification portion is formed on the mounting plate by silk screen printing or laser engraving.

[0013] In some optional embodiments, at least two mounting plates are disposed on the heat sink mounting frame, and at least two terminals are disposed on each mounting plate.

[0014] In some optional embodiments, a heat dissipation mesh and a dust cover are provided on both sides of the body, the heat dissipation mesh is connected to the accommodating cavity, the dust cover is located on the side of the heat dissipation mesh away from the accommodating cavity and covers the heat dissipation mesh, and ventilation holes are provided on the dust cover, and the ventilation holes are connected to the heat dissipation mesh.

[0015] In some optional embodiments, a plurality of wiring inlets are provided on the main body, and the wiring inlets are communicated with the wiring cavity.

[0016] In some optional embodiments, a protective gasket is provided in the wiring entry.

[0017] In some optional embodiments, the protective gasket includes an annular gasket and a plurality of elastic parts, the annular gasket is inserted into the wiring inlet, and the plurality of elastic parts are disposed in the annular gasket and are evenly arranged along the circumference of the annular gasket.

[0018] Another embodiment of the utility model provides a frequency converter, comprising: a power board group and a housing assembly of the frequency converter as described above, wherein the power board group is disposed in the housing and electrically connected to the terminal.

[0019] Compared with the prior art, when the shell assembly of the inverter of the utility model connects the wires to the terminals, the identification part and the terminal can be directly observed from the opening, which is convenient for users to match the terminals and the identification parts, avoids the user from making wiring errors, and improves safety; in addition, with the structural design of the radiator mounting frame, the interior of the main body is simple and reliable, reducing the welding process and reducing costs.

[0020] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded view of the frequency converter of one embodiment of the utility model when the cover is hidden;

[0022] Figure 2This is a schematic structural diagram of a housing assembly of a frequency converter according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the housing assembly of the frequency converter according to one embodiment of the utility model when the cover is hidden;

[0024] Figure 4 for Figure 3 An enlarged view of point A is shown;

[0025] Figure 5 An exploded diagram of a frequency converter according to an embodiment of the utility model;

[0026] Figure 6 The present invention is a schematic diagram of the structure of one side of a housing assembly of a frequency converter according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 10. Power board assembly; 11. Wire assembly; 20. Main body; 21. Wiring cavity; 211. Opening; 212. Communication board; 22. Terminal; 23. Identification portion; 24. Accommodation cavity; 241. Upper cover; 242. Display panel; 25. Heat dissipation mesh; 26. Dust cover; 27. Wiring entry; 28. Protective gasket; 281. Ring gasket; 282. Elastic portion; 30. Flip cover; 40. Radiator mounting bracket; 41. Mounting plate; 50. Radiator. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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 making creative work are within the scope of protection of the utility model. In the description of the utility model, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of the utility model, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0033] When wiring the terminals of the existing inverter, the terminals are usually arranged inside the housing, while the labels used to identify the terminals are usually located on the outer surface of the housing, which is not conducive to the user observing the corresponding relationship between the labels and the terminals, resulting in easy misconnection. However, the utility model adds a mounting plate facing the opening on the radiator mounting frame, and arranges the terminals and the identification part on the mounting plate accordingly. Once the user opens the opening, the terminal and the identification part can be clearly and intuitively identified, which is convenient for the user to connect the corresponding wiring and improves the accuracy of the wiring.

[0034] Please also see Figure 1 and Figure 2 An embodiment of the utility model provides an inverter, including: a power board group 10 and an inverter housing assembly, the inverter housing assembly includes a body 20, a flip cover 30 and a radiator mounting frame 40.

[0035] Please also see Figure 3 and Figure 4The body 20 is provided with a wiring cavity 21, one side of the wiring cavity 21 is provided with an opening 211, and the wiring cavity 21 is provided with a plurality of terminals 22 and a plurality of identification parts 23

[0036] The radiator mounting frame 40 is arranged in the body 20, and the interior of the body 20 is divided into a receiving cavity 24 and a wiring cavity 21. The radiator mounting frame 40 is provided with a mounting plate 41 located in the wiring cavity 21. The terminal 22 and the identification portion 23 are both arranged on the side of the mounting plate 41 facing the opening 211, so that the user can observe the terminal 22 and the identification portion 23 conveniently. The identification portion (23) is arranged correspondingly on one side of the terminal (22), so that the user can match the terminal 22 with the identification portion 23 conveniently. By arranging the mounting plate 41 on the radiator mounting frame 40, the position on the radiator mounting frame 40 is effectively utilized, and the terminal 22 and the identification portion 23 can be arranged on the mounting plate 41 of the radiator mounting frame 40, which is conducive to simplifying the internal structure of the body 20, making the product structure more compact, and helping to reduce costs.

[0037] When the user connects the wire to the terminal 22 , the user can directly observe the identification portion 23 and the terminal 22 from the opening 211 , so that the terminal 22 and the identification portion 23 can be quickly matched, thereby avoiding the user from making wiring errors and improving safety.

[0038] In this embodiment, the opening 211 is located at the front side of the body 20. When the body 20 is installed, the body 20 is hung on the wall with the rear side of the body 20 facing the wall, so that the user can more conveniently observe into the opening 211 during use. Of course, the position of the opening 211 can also be changed according to different usage scenarios, so as to facilitate the user to observe the wiring.

[0039] See also Figure 5 The power board group 10 is arranged in the body 20 and is electrically connected to the terminal 22 through the wire group 11. In this embodiment, the power board group 10 is fixed to the body 20 by screws. Of course, the power board group 10 can also be fixed in other ways, such as being fixed to the body 20 by buckles. The power board group 10 is mainly composed of components such as circuit boards, capacitors, windings, and transformers. These components work together to achieve frequency conversion adjustment and output of electric energy, thereby controlling the speed and torque of the motor. The specific principles are well known to those skilled in the art and will not be described in detail here.

[0040] The flip cover 30 is movably or detachably connected to the body 20 and closes the opening 211 . The flip cover 30 can open the opening 211 after being moved relative to the body 20 or removed from the body 20 .

[0041] The connection method between the flip cover 30 and the body 20 can be designed according to actual needs. For example, the flip cover 30 is detachably connected to the body 20 through a buckle structure. When the terminal 22 needs to be wired, the flip cover 30 only needs to be removed from the housing. The buckle structure may include a buckle provided on the flip cover 30 and a buckle groove provided on the body 20, and the buckle and the buckle groove are engaged with each other. Of course, the connection method between the flip cover 30 and the body 20 is not limited to this. Those skilled in the art can also choose other connection methods according to the teachings of the utility model. For example, when the flip cover 30 is movably connected to the body 20, the flip cover 30 can be rotated with the body 20 through a rotating shaft structure, and the opening 211 can be closed and opened by flipping the front cover. Alternatively, slide grooves are provided on both sides of the opening 211, and the side edges of the flip cover 30 slide with the slide grooves, and the opening 211 can be closed and opened by sliding the flip cover 30.

[0042] In this embodiment, a mounting opening is formed on one side of the accommodating cavity 24, and the mounting opening is covered by the upper cover 241, and the mounting opening facilitates the installation of the power board group 10. In addition, in this embodiment, a display panel 242 is also provided on the upper cover 241, and the display panel 242 is electrically connected to the power board group 10, and a label corresponding to the button on the display panel 242 is provided on the outer side of the upper cover 241, which is used to remind the user of the function of the corresponding button.

[0043] The radiator mounting frame 40 is used to mount the radiator 50, and the radiator 50 is used to dissipate heat for the power board group 10 disposed in the accommodating cavity 24. The specific structure of the radiator 50 can be designed according to actual needs. For example, the radiator 50 can be a fan assembly, a semiconductor heat dissipation assembly, etc. In this embodiment, the radiator 50 is a fan assembly, and the radiator mounting frame 40 is provided with a through groove for installing the fan assembly.

[0044] In some optional embodiments, the angle between the surface of the mounting plate 41 on the side facing the opening 211 and the direction of the opening 211 is 85°-95°. In this embodiment, the angle between the surface of the mounting plate 41 on the side facing the opening 211 and the direction of the opening 211 is 90°. At this time, the side of the mounting plate 41 facing the opening 211 and the direction of the opening 211 are perpendicular to each other, so that the side of the mounting plate 41 facing the opening 211 directly faces the opening 211. When the user observes the opening 211, the user's line of sight is roughly parallel to the direction of the opening 211, and the user's line of sight is roughly perpendicular to the surface angle of the mounting plate 41 on the side facing the opening 211. The terminals 22 and the identification portion 23 at various positions on the mounting plate 41 can be observed by the user, which is beneficial to improving the recognition of the terminals 22 and the identification portion 23.

[0045] In some optional embodiments, the mounting plate 41 is formed by partial structure of the radiator mounting frame 40 through sheet metal stamping. By directly forming the mounting plate 41 through sheet metal stamping of partial structure of the radiator mounting frame 40, material utilization is improved, welding process is reduced or adding connecting structures such as screws is avoided, which is beneficial to reducing costs and simplifying the production process, making the internal structure of the main body 20 more concise.

[0046] The identification portion 23 may be a pattern silk-screened at a suitable position in the wiring cavity 21. For example, in some optional embodiments, the identification portion 23 is formed on the mounting plate 41 by silk-screening or laser engraving, so that the identification portion 23 is easy to form and suitable for mass production. In this embodiment, the identification portion 23 is a letter pattern silk-screened on the mounting plate 41. Of course, the design of the identification portion 23 is not limited to this. Those skilled in the art may also choose other suitable designs according to the teachings of the utility model. For example, the identification portion 23 may be a label plate installed in the wiring cavity 21 by an adhesive structure, a snap-on structure or a threaded structure. Since the inverter has different input and output terminals 22, in some optional embodiments, at least two mounting plates 41 are provided on the radiator mounting frame 40, and at least two terminals 22 are provided on each mounting plate 41, so that different types of input and output terminals 22 are placed on different mounting plates 41, so that users can more intuitively identify, improve the recognition of the terminals 22, and avoid user errors. For example, in this embodiment, the plurality of terminals 22 include 7 AC input and output terminals 22 and two PV input terminals 22, the 7 AC input and output terminals 22 are arranged on one of the mounting plates 41, and the two PV input terminals 22 are arranged on the other mounting plate 41. Of course, the number and arrangement of the mounting plates 41 and the terminals 22 are not limited thereto, and those skilled in the art may also select other suitable arrangements according to the teachings of the present invention in combination with the input and output types of the inverter, so as to place different input and output terminals 22 on different mounting plates 41.

[0047] In some optional embodiments, both sides of the body 20 are provided with heat dissipation meshes 25 and dust covers 26, the heat dissipation meshes 25 are connected to the accommodating cavity 24, the dust covers 26 are located on the side of the heat dissipation meshes 25 away from the accommodating cavity 24, and shield the heat dissipation meshes 25, and the dust covers 26 are provided with ventilation holes, which are connected to the heat dissipation meshes 25, and the heat generated by the power board group 10 in the accommodating cavity 24 can be dissipated from the heat dissipation meshes 25 and the through holes. The dust covers 26 are used to prevent dust from entering the accommodating cavity 24 from the heat dissipation meshes 25. In this embodiment, the dust covers 26 are detachably mounted on the body 20 by screws.

[0048] See also Figure 6In some optional embodiments, a plurality of wiring entrances 27 are provided on the main body 20, and the wiring entrances 27 are connected to the wiring cavity 21. The wires pass through the wiring entrances 27 into the wiring cavity 21 and are then electrically connected to the terminals 22, wherein the same wiring entrance 27 can pass through a plurality of wires at the same time.

[0049] In order to prevent the wires from being scratched, in some optional embodiments, a protective gasket 28 is provided in the wiring entrance 27 to prevent the wires from being scratched by the edge of the wiring entrance 27. Preferably, the position of the wiring entrance 27 can correspond to the position of the wiring entrance 27, thereby reducing the bending of the wires and preventing the wires from being entangled in the wiring cavity 21.

[0050] In some optional embodiments, the protective gasket 28 includes an annular gasket 281 and a plurality of elastic parts 282. The annular gasket 281 is inserted into the wiring inlet 27. The plurality of elastic parts 282 are disposed in the annular gasket 281 and are evenly arranged along the circumference of the annular gasket 281. When the wire passes through the annular gasket 281, the elastic part 282 is pressed on the wire, thereby facilitating the closing of the gap between the wire and the annular gasket 281, thereby achieving an insect-proof effect.

[0051] In addition, in this embodiment, a communication board 212 is also provided in the wiring cavity 21. The communication board 212 is signal-connected to the power board group 10 for receiving and transmitting signals, thereby facilitating other control devices to establish a communication connection with the power filter board through the communication board 212.

[0052] 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 housing assembly of a frequency converter, characterized in that: include: body, flip cover and radiator mounting bracket; A wiring cavity is provided in the body, an opening is provided on one side of the wiring cavity, and a plurality of terminals and a plurality of identification parts are provided in the wiring cavity; The flip cover is movably or detachably connected to the body and closes the opening; The radiator mounting frame is arranged in the body and divides the interior of the body into a accommodating cavity and the wiring cavity. The radiator mounting frame is provided with a mounting plate located in the wiring cavity. The terminal and the identification portion are both arranged on a side of the mounting plate facing the opening, and the identification portion is correspondingly arranged on one side of the terminal.

2. The housing assembly of a frequency converter according to claim 1, characterized in that: The angle between the surface of the mounting plate on the side facing the opening and the direction of the opening is 85-95°.

3. The housing assembly of a frequency converter according to claim 1, characterized in that: The mounting plate is formed by stamping a portion of the structure of the radiator mounting frame through sheet metal.

4. The housing assembly of a frequency converter according to claim 1, characterized in that: The identification portion is formed on the mounting plate by silk screen printing or laser engraving.

5. The housing assembly of a frequency converter according to claim 1, characterized in that: At least two mounting plates are arranged on the radiator mounting frame, and at least two terminals are arranged on each mounting plate.

6. The housing assembly of a frequency converter according to claim 1, characterized in that: Both sides of the body are provided with heat dissipation mesh holes and dust covers, the heat dissipation mesh holes are connected with the accommodating cavity, the dust cover is located on the side of the heat dissipation mesh holes away from the accommodating cavity and shields the heat dissipation mesh holes, and the dust cover is provided with ventilation holes, which are connected with the heat dissipation mesh holes.

7. A housing assembly for a frequency converter according to any one of claims 1 to 6, characterized in that: The main body is provided with a plurality of wiring inlets, and the wiring inlets are communicated with the wiring cavity.

8. The housing assembly of a frequency converter according to claim 7, characterized in that: A protective gasket is arranged in the wiring entrance.

9. The housing assembly of a frequency converter according to claim 8, characterized in that: The protective gasket comprises an annular gasket and a plurality of elastic parts. The annular gasket is inserted into the wiring inlet. The plurality of elastic parts are arranged in the annular gasket and are evenly arranged along the circumference of the annular gasket.

10. A frequency converter, characterized in that: include: A power board group and a housing assembly of a frequency converter as claimed in any one of claims 1 to 9, wherein the power board group is arranged in the body and is electrically connected to the terminal.

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