CN212381146U - Frequency converter for AC speed regulation - Google Patents

Abstract

The utility model discloses a frequency converter for AC speed regulation, which comprises a fixed plate and a shell, wherein the shell is arranged at the left end surface side of the fixed plate, the fixed plate is fixed with the shell by spot welding, a wiring board is arranged at the upper end of the shell, and a mounting hole is arranged at the upper end of the wiring board, the utility model changes the traditional wiring hole which is arranged in advance into the existing wiring board arranged at the bottom end of the shell, and a plurality of wiring holes are arranged inside the wiring board and are of a knocking structure, thus the wiring hole is in a sealing state when not in use, only needs to be lightly knocked when in use, the utility model discloses a frequency converter for AC speed regulation by arranging a groove at the axis center of the connecting plate and arranging a cover plate inside the groove, and arranging a magnet at the bottom ends of the cover plate respectively, thus the cover plate can be connected with the connecting plate through the magnet when the wiring is not in use, it is possible to prevent external dust or foreign substances from entering the inside of the case.

Description

Frequency converter for AC speed regulation

Technical Field

The utility model belongs to the technical field of the converter subassembly is relevant, concretely relates to a converter for exchanging speed governing.

Background

The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, and mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit and a detecting unit microprocessing unit.

The existing frequency converter has the following problems: most of the existing frequency converters need to be connected with electric wires when in use, and the traditional box body is directly provided with wiring holes which can cause dust entering and the like when not in use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a converter for exchanging speed governing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a converter for exchanging speed governing, includes fixed plate and shell, fixed plate left end table side is provided with the shell, the fixed plate is fixed with shell spot welding, the shell upper end is provided with the wiring board, the wiring board upper end is provided with the mounting hole, shell left end table side is provided with the control box, the shell lower extreme left and right sides respectively is provided with a heat dissipation window, the constitution of wiring board is including draw-in groove, connecting plate, connecting hole, magnetite, apron and wiring hole, connecting plate upper end four corners department respectively is provided with a connecting hole, connecting plate upper end axle center department is provided with the wiring hole, both ends respectively are provided with a draw-in groove about the wiring hole, the upper end in wiring hole is provided with the apron, the apron bottom left and right sides respectively is provided with a magnetite, the wiring board passes through screw fixed connection.

Preferably, the control box comprises a unit indicator lamp, an operation indicator lamp, a display screen, an operation key, a control key and a frame, wherein the operation indicator lamp is arranged on the upper side of the front end of the frame, the display screen is arranged at the lower end of the operation indicator lamp, the unit indicator lamp is arranged at the right end of the display screen, the operation key is arranged at the lower end of the display screen, the control key is arranged on the right side of the operation key, and the control box is fixedly sleeved with the shell through the frame.

Preferably, the wiring hole is provided with a plurality of altogether, a plurality of the size and the specification of wiring hole are all the same, a plurality of wiring hole is the structure that can strike the form.

Preferably, the shell is of a hollow structure, and the interior of the shell consists of a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detecting unit and a microprocessing unit.

Preferably, an adjusting knob is arranged at the inner axis of the operating key, and the adjusting knob inside the operating key is in a clockwise turning-up state and in a counterclockwise turning-down state.

Preferably, the number of the heat dissipation windows is two, the sizes and the specifications of the two heat dissipation windows are the same, and the two heat dissipation windows are respectively fixedly connected with the shell through screws.

Compared with the prior art, the utility model provides a converter for exchanging speed governing possesses following beneficial effect:

(1) the utility model changes the traditional wiring holes which are arranged in advance into the existing wiring board which is arranged at the bottom end of the shell, and a plurality of wiring holes are arranged in the wiring board and are of a knocking structure, thus the wiring board is in a sealing state when not in use and only needs to be lightly knocked when in use;

(2) the utility model discloses in be provided with the recess through the axle center department at the connecting plate to be provided with the apron in the inside of recess, respectively be provided with a magnetite in the bottom at apron both ends, can be connected apron and connecting plate through the magnetite when not working a telephone switchboard like this, can avoid external dust or impurity to enter into the inside of shell.

Drawings

Fig. 1 is a schematic structural diagram of a frequency converter for ac speed regulation according to the present invention;

fig. 2 is a schematic view of the front structure of the control box of the present invention;

FIG. 3 is a schematic view of an exploded structure of the wiring board of the present invention;

in the figure: 1. a control box; 11. a unit indicator light; 12. an operation indicator light; 13. a display screen; 14. operating a key; 15. a control key; 16. a frame; 2. a wiring board; 21. a card slot; 22. a connecting plate; 23. Connecting holes; 24. a magnet; 25. a cover plate; 26. a wiring hole; 3. mounting holes; 4. a housing; 5. a fixing plate; 6. and a heat dissipation window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-3, the present invention provides a technical solution: a frequency converter for AC speed regulation comprises a fixed plate 5 and a shell 4, the shell 4 is arranged on the left end surface side of the fixed plate 5, the fixed plate 5 and the shell 4 are fixed by spot welding, a wiring board 2 is arranged on the upper end of the shell 4, a plurality of wiring holes 26 are arranged, a power line can be connected through the arrangement of the wiring holes 26, the sizes and the specifications of the wiring holes 26 are the same, the wiring holes 26 are all in a knock-shaped structure, a mounting hole 3 is arranged on the upper end of the wiring board 2, a control box 1 is arranged on the left end surface side of the shell 4, the control box 1 comprises a unit indicator lamp 11, an operation indicator lamp 12, a display screen 13, an operation key 14, a control key 15 and a frame 16, the operation indicator lamp 12 is arranged on the upper side of the front end of the frame 16, the display screen 13 is arranged at the lower end of the operation indicator lamp 12, the unit, the lower extreme of display screen 13 is provided with operation button 14, the right side of operation button 14 is provided with control button 15, the inside axle center department of operation button 14 is provided with adjust knob, through operation button 14's setting, so can be better reach filling of operation, adjust knob in operation button 14 inside is clockwise for the state of increaseing and anticlockwise for the state of reducing, control box 1 cup joints fixedly with shell 4 through frame 16, shell 4 lower extreme left and right sides respectively is provided with a heat dissipation window 6, heat dissipation window 6 is provided with two altogether, the size and the specification of two heat dissipation windows 6 are the same, through the setting of two heat dissipation windows 6, so can be with the heat of shell 4 inside distribute away, two heat dissipation windows 6 respectively through screw fixed connection with shell 4, the constitution of wiring board 2 includes draw-in groove 21, connecting plate 22, connecting hole 23, magnetite 24, Cover plate 25 and wiring hole 26, connecting plate 22 upper end four corners department respectively is provided with a connecting hole 23, connecting plate 22 upper end axle center department is provided with wiring hole 26, both ends respectively are provided with a draw-in groove 21 about wiring hole 26, the upper end of wiring hole 26 is provided with cover plate 25, the cover plate 25 bottom left and right sides respectively is provided with a magnetite 24, wiring board 2 passes through connecting hole 23 and shell 4 and passes through screw fixed connection, shell 4 is inside hollow structure, shell 4 is inside by the rectifier cell, the filter cell, the contravariant unit, the brake unit, the drive unit, detecting element and microprocessor unit constitute, thereby can make better work.

The utility model discloses a theory of operation and use flow: when the frequency converter is used, firstly, the frequency converter is fixed tightly through the fixing plate 5, then, the frequency converter is connected with a power line, when the power line is connected, a user opens the cover plate 25, so that the wiring hole 26 in the wiring board 2 leaks, so that the wiring hole 26 is knocked during wiring, the wiring hole 26 falls off, so that the connection of the power line can be rapidly and conveniently carried out, after the connection, a power switch is opened, then, the control key 15 and the operation key 14 in the control box 1 are operated through the control key 15 and the operation key 14, the program setting can be reached, then, the frequency converter is started, an adjusting knob is arranged at the inner axle center of the operation key 14, the speed can be adjusted through the adjusting knob, the voltage and the frequency of an output power supply are adjusted by the disconnection of an inner IGBT of the frequency converter, and the required power supply voltage is provided according to the actual requirement of a motor, thereby achieving the purposes of energy conservation and speed regulation, and completing the use of the device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A converter for exchanging speed governing, includes fixed plate (5) and shell (4), its characterized in that: the utility model discloses a solar energy collecting device, including fixed plate (5), fixed plate (5) left end table side is provided with shell (4), fixed plate (5) is fixed with shell (4) spot welding, shell (4) upper end is provided with wiring board (2), wiring board (2) upper end is provided with mounting hole (3), shell (4) left end table side is provided with control box (1), the shell (4) lower extreme left and right sides respectively is provided with a heat dissipation window (6), the constitution of wiring board (2) is including draw-in groove (21), connecting plate (22), connecting hole (23), magnetite (24), apron (25) and wiring hole (26), the four corners department of connecting plate (22) upper end respectively is provided with a connecting hole (23), connecting plate (22) upper end department is provided with wiring hole (26), the left and right sides both ends of wiring hole (26) respectively are provided with a draw-in groove (21), the upper end of wiring hole (26), the magnet (24) are respectively arranged on the left side and the right side of the bottom end of the cover plate (25), and the wiring board (2) is fixedly connected with the shell (4) through a connecting hole (23) and a screw.

2. The frequency converter for ac speed regulation according to claim 1, wherein: the control box (1) comprises a unit indicating lamp (11), an operation indicating lamp (12), a display screen (13), an operation key (14), a control key (15) and a frame (16), wherein the operation indicating lamp (12) is arranged on the upper side of the front end of the frame (16), the display screen (13) is arranged at the lower end of the operation indicating lamp (12), the unit indicating lamp (11) is arranged at the right end of the display screen (13), the operation key (14) is arranged at the lower end of the display screen (13), the control key (15) is arranged on the right side of the operation key (14), and the control box (1) is fixedly sleeved with the shell (4) through the frame (16).

3. The frequency converter for ac speed regulation according to claim 1, wherein: wiring hole (26) are provided with a plurality of altogether, a plurality of the size and the specification of wiring hole (26) are all the same, a plurality of wiring hole (26) are the structure that can strike the form.

4. The frequency converter for ac speed regulation according to claim 1, wherein: the shell (4) is of a hollow structure, and the interior of the shell (4) is composed of a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detecting unit and a micro-processing unit.

5. A frequency converter for ac speed regulation according to claim 2, wherein: an adjusting knob is arranged at the axis inside the operation key (14), and the adjusting knob inside the operation key (14) is in a state of being adjusted to be larger clockwise and is in a state of being adjusted to be smaller anticlockwise.

6. The frequency converter for ac speed regulation according to claim 1, wherein: the heat dissipation window (6) is provided with two, two the size and the specification of heat dissipation window (6) are all the same, two heat dissipation window (6) pass through screw fixed connection with shell (4) respectively.

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