CN218940934U - Frequency converter noise reduction device - Google Patents

Abstract

The utility model discloses a noise reduction device of a frequency converter, which comprises a box body and a noise reduction mechanism, wherein the noise reduction mechanism is arranged in the box body, springs and dampers in the noise reduction mechanism are arranged around the bottom of an inner cavity of the box body, the noise reduction device also comprises a connecting plate, a sound absorption sponge, holes and a sound insulation cover, the connecting plate is arranged at one end of the springs and the dampers, and the sound absorption sponge is arranged at the center of the bottom of the connecting plate; the utility model has the effects of bidirectional noise reduction by arranging the noise reduction mechanism, not only can improve the comprehensiveness of noise reduction, but also can improve the overall noise reduction effect, and can achieve the effects of vibration reduction and noise reduction when in work by utilizing the matching of the springs and the dampers, and the sound absorption sponge is beneficial to achieving the effect of auxiliary noise reduction on the bottom of the sound absorption sponge while exhausting the air, and is matched with the sound-proof cover to form wrapped noise reduction work, thereby achieving double-stage noise reduction and simultaneously being beneficial to improving the required noise reduction effect.

Description

Frequency converter noise reduction device

Technical Field

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

Background

The frequency converter is a power control device which controls the alternating current motor by changing the frequency of a working power supply of the motor by applying a frequency conversion technology and a microelectronic technology. But the noise and air flow transmitted by the ventilation openings on the two sides are relatively low in noise reduction and flow diversion efficiency, and the operation of cleaning dust generated in the noise and air flow transmission process is relatively laborious.

Aiming at the technical problems, for example, publication No. CN114245671A discloses a noise reduction flow guiding device, by starting a high-voltage frequency converter, noise and air flow transmitted by the high-voltage frequency converter are transmitted into a fixed plate, and a first air suction device is started, so that noise emitted by the high-voltage frequency converter can be reduced under the filtering action of a filter plate;

although the noise reduction effect can be achieved through the flow guide filtering mode, the noise reduction effect is poor in the actual use process, the noise generated by the whole device cannot be completely treated, and the bidirectional noise reduction effect cannot be achieved.

Disclosure of Invention

The utility model aims to provide a frequency converter noise reduction device which has the effect of bidirectional noise reduction, so that not only can the comprehensiveness of noise reduction be improved, but also the overall noise reduction effect can be improved, and the problems in the background technology can be solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the noise reduction device of the frequency converter comprises a box body and a noise reduction mechanism, wherein the noise reduction mechanism is arranged in the box body, and springs and dampers in the noise reduction mechanism are arranged around the bottom of an inner cavity of the box body;

still including the connecting plate, inhale sound sponge, hole and sound-proof housing, the connecting plate is installed in the one end of spring and attenuator, inhale sound sponge and install in the center department of connecting plate bottom, the hole distributes and sets up in inhaling the top of sound sponge, the sound-proof housing is installed in the top of connecting plate.

Preferably, the top of connecting plate has seted up first notch, the second notch has been seted up to the bottom of sound proof housing.

Preferably, the inner chamber of box is provided with heat dissipation mechanism, heat dissipation mechanism includes initiative radiator unit, passive radiator unit and exhaust subassembly, initiative radiator unit sets up in the top of sound proof housing, passive radiator unit sets up in the bottom of sound proof housing, exhaust subassembly sets up in the outside of box.

Preferably, the active heat dissipation assembly comprises a heat dissipation fan and air inlets, wherein the heat dissipation fan is respectively arranged at the front end and the rear end of the top of the inner cavity of the sound-proof housing, and the air inlets are respectively arranged at the two sides of the top of the sound-proof housing.

Preferably, the passive heat dissipation assembly comprises heat dissipation fins and air vents, wherein the heat dissipation fins are arranged in the first notch, and the air vents are distributed and arranged on the inner sides of the heat dissipation fins.

Preferably, the exhaust assembly comprises radiating holes and a separation net, the radiating holes are respectively formed in two sides of the box body, and the separation net is installed at the bottom of the box body in a penetrating mode.

Preferably, the bottom of sound-proof housing inner chamber is provided with supporting mechanism, supporting mechanism includes branch, places seat and converter body, branch is installed around the sound-proof housing inner chamber bottom respectively, place the seat and install in the one end of branch, the converter body is placed in the top of placing the seat.

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

1. the utility model has the effects of bidirectional noise reduction by arranging the noise reduction mechanism, not only can improve the comprehensiveness of noise reduction, but also can improve the overall noise reduction effect, and can achieve the effects of vibration reduction and noise reduction when in work by utilizing the matching of the springs and the dampers, and the sound absorption sponge is beneficial to achieving the effect of auxiliary noise reduction on the bottom of the sound absorption sponge while exhausting the air, and is matched with the sound-proof cover to form wrapped noise reduction work, thereby achieving double-stage noise reduction and simultaneously being beneficial to improving the required noise reduction effect.

2. The heat radiation mechanism is arranged, so that the heat radiation effect of the heat radiation mechanism can be improved, the heat radiation effect of the heat radiation mechanism can be ensured while the noise reduction effect is ensured, the stable operation of equipment is ensured, the heat radiation operation in an active mode can be achieved by utilizing the matching of the heat radiation fan and the air inlet hole, the heat radiation fins and the air outlet hole perform passive heat absorption operation, the heat radiation operation is improved, and finally, the air exhaust ventilation operation is finished from the bottom and two sides of the box body by the matching of the heat radiation hole and the partition net, so that the internal air flow operation is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the case of the present utility model;

FIG. 3 is a schematic diagram of a heat dissipating fan according to the present utility model;

fig. 4 is a schematic view of the sound absorbing sponge according to the present utility model.

In the figure: 1. a case; 2. a noise reduction mechanism; 21. a spring; 22. a damper; 23. a connecting plate; 24. a sound absorbing sponge; 25. a hole; 26. a soundproof cover; 3. a heat dissipation mechanism; 31. a heat radiation fan; 32. an air inlet hole; 33. a heat radiation fin; 34. an exhaust port; 35. a heat radiation hole; 36. a screen; 4. a support mechanism; 41. a support rod; 42. a placement seat; 43. a frequency converter body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the utility model provides a noise reduction device for a frequency converter, which comprises a box body 1 and a noise reduction mechanism 2, wherein the noise reduction mechanism 2 is arranged in the box body 1, a spring 21 and a damper 22 in the noise reduction mechanism 2 are both arranged around the bottom of an inner cavity of the box body 1, and the damping effect of the spring 21 and the damper 22 is utilized so as to achieve the damping and buffering effects, thereby assisting the noise reduction mechanism to perform the primary noise reduction effect;

the sound-absorbing device further comprises a connecting plate 23, sound-absorbing sponge 24, holes 25 and a sound-insulating cover 26, wherein the connecting plate 23 is arranged at one end of the spring 21 and one end of the damper 22, the sound-absorbing sponge 24 is arranged at the center of the bottom of the connecting plate 23, the holes 25 are distributed and arranged at the top of the sound-absorbing sponge 24, and the sound-insulating cover 26 is arranged at the top of the connecting plate 23;

the connection plate 23 is used for connecting and supporting the sound-proof cover 26, the sound-absorbing sponge 24 is favorable for sound-absorbing work, and the holes 25 ensure ventilation under the sound-absorbing effect.

When the frequency converter works, larger noise is generated when the frequency converter works, and meanwhile, the noise is generated along with vibration force when the frequency converter works, so that the force is transmitted to the spring 21 and the damper 22 when the frequency converter vibrates, and the spring 21 and the damper 22 are utilized for absorbing force and vibration, so that the effect of noise reduction is achieved, and the primary noise reduction work can be completed at the moment;

when the second grade falls the noise, adopt the mode of parcel formula to carry out noise isolation and absorb, the sound absorbing sponge 24 of current sound-proof housing 26 cooperation its bottom forms the work of making an uproar of falling parcel formula to can carry out isolated noise, the sound absorbing sponge 24 can also reach the effect of inhaling the sound simultaneously, through the doublestage after making an uproar alright improve its required noise reduction effect.

Wherein, the top of connecting plate 23 has seted up first notch, and the second notch has been seted up to the bottom of sound proof housing 26, utilizes the seting up of first notch to conveniently install and inhale sound sponge 24, and the seting up of second notch conveniently installs radiator fin 33, and radiator fin 33 and the inner wall installation of second notch.

Preferably, the inner cavity of the box body 1 is provided with the heat dissipation mechanism 3, the heat dissipation mechanism 3 comprises an active heat dissipation component, a passive heat dissipation component and an exhaust component, the active heat dissipation component is arranged at the top of the sound insulation cover 26, the passive heat dissipation component is arranged at the bottom of the sound insulation cover 26, the exhaust component is arranged at the outer side of the box body 1, and the required active heat dissipation, passive heat dissipation and exhaust work are achieved by utilizing the cooperation of the active heat dissipation component, the passive heat dissipation component and the exhaust component.

The active heat dissipation component comprises a heat dissipation fan 31 and air inlets 32, the heat dissipation fan 31 is respectively arranged at the front end and the rear end of the top of the inner cavity of the sound insulation cover 26, the air inlets 32 are respectively arranged at the two sides of the top of the sound insulation cover 26, active heat dissipation work is achieved by the aid of the heat dissipation fan 31, and the air inlets 32 can achieve air inlet work.

The passive heat dissipation assembly includes a heat dissipation fin 33 and an air outlet 34, the heat dissipation fin 33 is mounted in the first notch, the air outlet 34 is distributed on the inner side of the heat dissipation fin 33, the heat dissipation fin 33 is beneficial to heat absorption, and the air outlet 34 can discharge hot air and heat downwards.

Wherein, exhaust assembly includes louvre 35 and separates net 36, and louvre 35 opens respectively in the both sides of box 1, separates net 36 and runs through the bottom of installing in box 1, utilizes louvre 35 to play ventilation heat dissipation work, and separates net 36 and reaches the exhaust heat dissipation and still can play the effect that debris blockked simultaneously.

When radiating, two groups of radiating fans 31 can be started firstly, the radiating fans 31 are utilized to blow downwards, at the moment, air is blown downwards through the air inlet holes 32, then heat absorption can be carried out through the cooperation of the radiating fins 33, and then heat is discharged downwards through the air outlet 34, meanwhile, the radiating holes 35 formed in the two sides play a role in ventilation and air discharge auxiliary heat dissipation, and the heat discharged downwards from the upper side and the hot air are discharged through the isolating net 36.

Further, the bottom of the inner chamber of the sound-proof housing 26 is provided with the supporting mechanism 4, the supporting mechanism 4 includes the branch 41, place seat 42 and converter body 43, branch 41 installs around the inner chamber bottom of the sound-proof housing 26 respectively, place seat 42 and install in the one end of branch 41, the converter body 43 is placed in the top of placing seat 42, utilize branch 41 to do benefit to the installation support to placing seat 42, place seat 42 simultaneously and do benefit to the placing and the installation work to converter body 43, and converter body 43 mainly controls alternating current motor's power control equipment through changing motor operating power frequency mode.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 (7)

1. The utility model provides a device of making an uproar falls in converter which characterized in that: the noise reduction device comprises a box body (1) and a noise reduction mechanism (2), wherein the noise reduction mechanism (2) is arranged in the box body (1), and a spring (21) and a damper (22) in the noise reduction mechanism (2) are arranged around the bottom of an inner cavity of the box body (1);

still including connecting plate (23), inhale sound sponge (24), hole (25) and sound-proof housing (26), connecting plate (23) are installed in the one end of spring (21) and attenuator (22), inhale sound sponge (24) and install in the center department of connecting plate (23) bottom, hole (25) are distributed and are seted up in the top of inhaling sound sponge (24), sound-proof housing (26) are installed in the top of connecting plate (23).

2. The frequency converter noise reduction device according to claim 1, wherein: the top of connecting plate (23) has seted up first notch, the bottom of sound proof housing (26) has seted up the second notch.

3. A transducer noise reduction device according to claim 2, wherein: the inner cavity of the box body (1) is provided with a heat dissipation mechanism (3), the heat dissipation mechanism (3) comprises an active heat dissipation component, a passive heat dissipation component and an exhaust component, the active heat dissipation component is arranged at the top of the sound insulation cover (26), the passive heat dissipation component is arranged at the bottom of the sound insulation cover (26), and the exhaust component is arranged at the outer side of the box body (1).

4. A transducer noise reduction device according to claim 3, wherein: the active heat dissipation assembly comprises a heat dissipation fan (31) and air inlets (32), wherein the heat dissipation fan (31) is respectively arranged at the front end and the rear end of the top of the inner cavity of the sound insulation cover (26), and the air inlets (32) are respectively arranged at the two sides of the top of the sound insulation cover (26).

5. The frequency converter noise reduction device according to claim 4, wherein: the passive heat dissipation assembly comprises heat dissipation fins (33) and air vents (34), wherein the heat dissipation fins (33) are arranged in the first notch, and the air vents (34) are distributed and arranged on the inner sides of the heat dissipation fins (33).

6. The frequency converter noise reduction device according to claim 5, wherein: the exhaust assembly comprises radiating holes (35) and a separation net (36), the radiating holes (35) are respectively formed in two sides of the box body (1), and the separation net (36) is installed at the bottom of the box body (1) in a penetrating mode.

7. The frequency converter noise reduction device according to claim 1, wherein: the bottom of sound proof housing (26) inner chamber is provided with supporting mechanism (4), supporting mechanism (4) include branch (41), place seat (42) and converter body (43), branch (41) are installed around sound proof housing (26) inner chamber bottom respectively, place seat (42) and install in the one end of branch (41), the top of placing seat (42) is placed in converter body (43).

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