CN216119543U

CN216119543U - Noise reduction device for frequency converter

Info

Publication number: CN216119543U
Application number: CN202122655949.3U
Authority: CN
Inventors: 章进强; 王丽梅; 汪敬敏
Original assignee: Nanjing Speed Sea Automation Equipment Co ltd
Current assignee: Nanjing Speed Sea Automation Equipment Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-22
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a noise reduction device for a frequency converter, which comprises a frequency converter body, a base, a radiator and a support frame, wherein the frequency converter body is fixedly arranged on the upper surface of the base, the radiator is arranged on both sides of the frequency converter body, the support frame is arranged at the top of the frequency converter body through fixing bolts, a first noise reduction mechanism is arranged on the upper surface of the support frame, a noise reduction connecting pipe is arranged on the lower surface of the first noise reduction mechanism, and the bottom of the noise reduction connecting pipe is connected with a second noise reduction mechanism. This a device of making an uproar falls for converter, the vibrations that can effectual buffering operation produced, the cost is lower, fine be applicable to the demand of making an uproar of falling under the ordinary condition, the effect of making an uproar falls in the realization high efficiency to reduced the noise of converter body, great improvement the device's shock-absorbing capacity, reduced mechanical vibration, fine improvement the device's the effect of making an uproar falls, thereby improved the practicality of this converter.

Description

Noise reduction device for frequency converter

Technical Field

The utility model relates to the technical field of frequency converters, in particular to a noise reduction device for a frequency converter.

Background

A Variable-frequency drive (VFD) is a power control device that applies frequency conversion technology and microelectronic technology to control an ac motor by changing the frequency of a working power supply of the motor.

The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detection unit micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation. Along with the continuous improvement of industrial automation degree, the frequency converter has also obtained very extensive application, and the frequency converter can cause noise pollution because of vibrations and work production great noise in the use, therefore the amortization falls the device of making an uproar and obtains continuous innovation and development, satisfies people's user demand basically, still has certain problem. The traditional silencing and noise-reducing device for the frequency converter is generally additionally provided with a layer of sound insulation or silencing cover, but the mode has a simple structure, the silencing effect is not good, only partial noise can be absorbed, partial noise can be transmitted out, the noise-reducing effect is poor, and the design of the noise-reducing device for the frequency converter is necessary aiming at the defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction device for a frequency converter, which can effectively buffer vibration generated by operation, has lower cost, is well suitable for noise reduction requirements under common conditions, and realizes a high-efficiency noise reduction effect, so that the noise of a frequency converter body is reduced, the buffer performance of the device is greatly improved, mechanical vibration is reduced, the noise reduction effect of the device is well improved, the practical performance of the frequency converter is improved, and the problems in the prior art can be solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a device of making an uproar falls for converter, includes converter body, base, radiator and support frame, converter body fixed mounting is at the upper surface of base, and the radiator is all installed to the both sides of converter body, and the support frame is installed through fixing bolt in the top of converter body, and the upper surface of support frame is equipped with the first mechanism of making an uproar that falls, and the lower surface of the first mechanism of making an uproar that falls is equipped with the connecting pipe of making an uproar, and the bottom of the connecting pipe of making an uproar that falls is connected the second and is fallen the mechanism of making an uproar.

Preferably, the top of the first noise reduction mechanism is provided with a heat dissipation hole, a mounting groove is arranged below the top of the frequency converter body and located under the support frame, the second noise reduction mechanism is mounted in the mounting groove, and a first silencing hole is formed in the noise reduction connecting pipe.

Preferably, the inside cavity of base forms the shock attenuation chamber, and the evenly distributed has a plurality of rubber shock absorbers in the shock attenuation chamber.

Preferably, the first mechanism of making an uproar of falling includes first box, dustproof pad, the damping plate of making an uproar, the cotton layer of amortization, shock attenuation buffer rod and second bloop of making an uproar, and the top of first box is equipped with dustproof pad, and the bottom of first box is equipped with the damping plate of making an uproar of falling, and the upper surface of the damping plate of making an uproar of falling is equipped with the second bloop, is located dustproof pad in the middle of the inside of first box and falls and be equipped with the cotton layer of amortization between the damping plate of making an uproar, and the upper surface on the cotton layer of amortization is equipped with shock attenuation buffer rod.

Preferably, one end of the second silencing hole is embedded into the noise reduction damping plate, the other end of the second silencing hole is embedded into the silencing cotton layer, and the top of the damping buffer rod is connected to the lower surface of the dustproof pad.

Preferably, the mechanism of making an uproar falls in second includes the second box, damping spring, the attenuator that gives sound insulation, the buffer layer, the muffler, installation card post and cork mounting hole, the bottom of second box is equipped with damping spring, damping spring keeps away from the one end of second box and fixes on the converter body, all be equipped with cork mounting hole on the inside both sides wall of second box, the inside of second box is equipped with the buffer layer, the inside of buffer layer is equipped with the muffler, be equipped with the attenuator that gives sound insulation between muffler and the buffer layer, the both ends of muffler all are equipped with the installation card post, the installation card post passes the buffer layer and installs in the cork mounting hole.

Compared with the prior art, the utility model has the following beneficial effects:

1. this a device of making an uproar falls for converter, the inside rubber shock absorber who sets up of base has the absorbing effect, be used for rocking that buffering converter body during operation produced, reduce certain noise, buffer layer and the vibrations that damping spring can effectual buffering operation produce that second box top set up, the mode through reducing vibrations reaches the effect of making an uproar of falling passively, the cost is lower, fine be applicable to the demand of making an uproar of falling under the ordinary condition, the inside both sides of buffer layer set up syllable-dividing attenuator and muffler and have certain syllable-dividing effect, reach the offsetting noise, realize the effect of making an uproar of falling high-efficiently.

2. This a device of making an uproar falls for converter, the cotton layer of amortization that sets up in the first mechanism of making an uproar of falling can absorb the noise that sends in the mechanism of making an uproar falls from the second, reach the dual effect of making an uproar of falling, thereby the noise of converter body has been reduced, the noise of making an uproar falls in the mechanism of making an uproar in the second and absorbs through the second bloop, reach the effect of making an uproar of falling of amortization, damping plate and shock attenuation buffer pole fall in the joining, great improvement the device's shock-absorbing capacity, mechanical vibration reduces, and the effect through the damping plate that falls makes an uproar, fine improvement the device's the effect of making an uproar, thereby the practicality of this converter has been improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the base of the present invention;

FIG. 3 is a partial schematic structural view of the present invention;

FIG. 4 is a schematic structural diagram of a first noise reduction mechanism according to the present invention;

FIG. 5 is a schematic cross-sectional view of a portion of the structure of the present invention;

fig. 6 is a schematic structural diagram of a second noise reduction mechanism according to the present invention.

In the figure: 1. a frequency converter body; 2. a base; 21. a damping chamber; 22. a rubber damper; 3. a heat sink; 4. a support frame; 5. a first noise reduction mechanism; 51. a first case; 52. a dust-proof pad; 53. a noise reduction damping plate; 54. a sound-deadening cotton layer; 55. a shock absorbing bumper bar; 56. a second muffling hole; 6. a second noise reduction mechanism; 61. a second case; 62. a damping spring; 63. a sound-insulating damper; 64. a buffer layer; 65. a muffler; 66. installing a clamping column; 67. a soft plug mounting hole; 7. heat dissipation holes; 8. mounting grooves; 9. a noise reduction connecting pipe; 10. a first muffling hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a noise reduction device for a frequency converter comprises a frequency converter body 1, a base 2, a radiator 3 and a support frame 4, wherein the frequency converter body 1 is fixedly installed on the upper surface of the base 2, a shock absorption cavity 21 is formed in the base 2 in a hollow manner, a plurality of rubber shock absorbers 22 are uniformly distributed in the shock absorption cavity 21, the radiator 3 is installed on both sides of the frequency converter body 1, the support frame 4 is installed on the top of the frequency converter body 1 through fixing bolts, a first noise reduction mechanism 5 is arranged on the upper surface of the support frame 4, the first noise reduction mechanism 5 comprises a first box body 51, a dustproof pad 52, a noise reduction damping plate 53, a noise reduction cotton layer 54, a shock absorption buffer rod 55 and a second noise reduction hole 56, the dustproof pad 52 is arranged on the top of the first box body 51, the noise reduction damping plate 53 is arranged on the bottom of the first box body 51, the second noise reduction hole 56 is arranged on the upper surface of the noise reduction damping plate 53, the noise reduction cotton layer 54 is arranged between the dustproof pad 52 and the noise reduction plate 53 in the middle of the inside of the first box body 51, the upper surface of the silencing cotton layer 54 is provided with a shock absorption buffer rod 55, one end of a second silencing hole 56 is embedded into a noise reduction damping plate 53, the other end of the second silencing hole is embedded into the silencing cotton layer 54, the top of the shock absorption buffer rod 55 is connected to the lower surface of the dustproof pad 52, the lower surface of the first noise reduction mechanism 5 is provided with a noise reduction connecting pipe 9, the bottom of the noise reduction connecting pipe 9 is connected with a second noise reduction mechanism 6, the second noise reduction mechanism 6 comprises a second box body 61, a shock absorption spring 62, a sound insulation damper 63, a buffer layer 64, a silencer 65, an installation clamping column 66 and a soft plug installation hole 67, the bottom of the second box body 61 is provided with the shock absorption spring 62, one end of the shock absorption spring 62 far away from the second box body 61 is fixed on the frequency converter body 1, both side walls in the second box body 61 are provided with the soft plug installation hole 67, the buffer layer 64 is arranged in the second box body 61, the silencer 65 is arranged in the buffer layer 64, the sound insulation damper 63 is arranged between the silencer 65 and the buffer layer 64, the both ends of muffler 65 all are equipped with installation card post 66, and installation card post 66 passes buffer layer 64 and installs in cork mounting hole 67, and the top of the first mechanism of making an uproar 5 of making an uproar is equipped with louvre 7, and the top of converter body 1 is located support frame 4 and is equipped with mounting groove 8 under, and the second is made an uproar 6 of making an uproar and is installed in mounting groove 8, and the inside of connecting pipe 9 of making an uproar is equipped with first bloop 10 of making an uproar.

In summary, in the noise reduction device for the frequency converter, the rubber shock absorber 22 arranged inside the base 2 has a shock absorption function for buffering the shake generated during the operation of the frequency converter body 1 and reducing certain noise, the buffer layer 64 and the shock absorption spring 62 arranged at the top of the second box body 61 can effectively buffer the shock generated during the operation, the passive noise reduction effect is achieved by reducing the shock, the cost is low, and the noise reduction requirement under the common condition is well met, the sound insulation dampers 63 and the silencer 65 arranged on the two sides inside the buffer layer 64 have a certain sound insulation function to offset the noise, and the high-efficiency noise reduction effect is achieved, the silencing cotton layer 54 arranged in the first noise reduction mechanism 5 can absorb the noise emitted from the second noise reduction mechanism 6, so that the noise of the frequency converter body 1 is reduced, and the silencing and noise reduction effects are effectively achieved through the second silencing hole 56, the damping plate 53 and the shock attenuation buffer pole 55 of making an uproar fall in the joining, great improvement the device's shock-absorbing performance, reduce mechanical vibration to through the effect of the damping plate 53 of making an uproar falls, fine improvement the device's the noise reduction effect, thereby improved the practicality of this converter.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls for converter, includes converter body (1), base (2), radiator (3) and support frame (4), its characterized in that: the frequency converter comprises a frequency converter body (1), wherein the frequency converter body (1) is fixedly installed on the upper surface of a base (2), radiators (3) are installed on two sides of the frequency converter body (1), a support frame (4) is installed at the top of the frequency converter body (1) through a fixing bolt, a first noise reduction mechanism (5) is arranged on the upper surface of the support frame (4), a noise reduction connecting pipe (9) is arranged on the lower surface of the first noise reduction mechanism (5), and a second noise reduction mechanism (6) is connected to the bottom of the noise reduction connecting pipe (9).

2. A noise reduction apparatus for a frequency converter according to claim 1, characterized in that: the top of the first noise reduction mechanism (5) is provided with a heat dissipation hole (7), the top of the frequency converter body (1) is located under the support frame (4) and is provided with a mounting groove (8), the second noise reduction mechanism (6) is mounted in the mounting groove (8), and a first noise reduction hole (10) is formed in the noise reduction connecting pipe (9).

3. A noise reduction apparatus for a frequency converter according to claim 1, characterized in that: the inside cavity of base (2) forms shock attenuation chamber (21), and evenly distributed has a plurality of rubber shock absorbers (22) in shock attenuation chamber (21).

4. A noise reduction apparatus for a frequency converter according to claim 1, characterized in that: first noise reduction mechanism (5) are including first box (51), dustproof pad (52), fall the damping plate (53) of making an uproar, amortization cotton layer (54), shock attenuation buffer rod (55) and second bloop (56), the top of first box (51) is equipped with dustproof pad (52), the bottom of first box (51) is equipped with the damping plate (53) of making an uproar, the upper surface of the damping plate (53) of making an uproar is equipped with second bloop (56), be located dustproof pad (52) and fall and be equipped with amortization cotton layer (54) between damping plate (53) of making an uproar in the middle of the inside of first box (51), the upper surface of amortization cotton layer (54) is equipped with shock attenuation buffer rod (55).

5. A noise reduction device for a frequency converter according to claim 4, characterized in that: one end of the second silencing hole (56) is embedded into the noise reduction damping plate (53), the other end of the second silencing hole is embedded into the silencing cotton layer (54), and the top of the damping buffer rod (55) is connected to the lower surface of the dustproof pad (52).

6. A noise reduction apparatus for a frequency converter according to claim 1, characterized in that: the second noise reduction mechanism (6) comprises a second box body (61), a damping spring (62), a sound insulation damper (63), a buffer layer (64), a silencer (65), an installation clamping column (66) and a soft plug installation hole (67), the bottom of second box (61) is equipped with damping spring (62), the one end that second box (61) was kept away from in damping spring (62) is fixed on converter body (1), all be equipped with soft stopper mounting hole (67) on the inside both sides wall of second box (61), the inside of second box (61) is equipped with buffer layer (64), the inside of buffer layer (64) is equipped with muffler (65), be equipped with between muffler (65) and buffer layer (64) syllable-dividing attenuator (63), the both ends of muffler (65) all are equipped with installation card post (66), installation card post (66) pass buffer layer (64) and install in soft stopper mounting hole (67).