CN219204273U

CN219204273U - Variable frequency motor with noise reduction structure

Info

Publication number: CN219204273U
Application number: CN202223432865.4U
Authority: CN
Inventors: 王林; 马东杰
Original assignee: Anshan Quansheng Power Electronic Co ltd
Current assignee: Anshan Quansheng Power Electronic Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-16
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses a variable frequency motor with a noise reduction structure, which belongs to the field of motor devices and comprises a shell, wherein a noise reduction layer is arranged in the shell, the noise reduction layer is made of a sound absorbing material, noise generated in the device during operation can be subjected to sound insulation treatment through the noise reduction layer, so that the noise is weakened and reduced, the influence of excessive conduction of the noise on people and working environment is avoided, noise pollution is reduced, a cooling fan capable of dissipating internal heat is arranged at one end in the shell, a fan cover is arranged at one end of the outer side of the cooling fan, a plurality of first noise reduction holes and a plurality of second noise reduction holes are formed in the fan cover, the noise generated by the fan can be subjected to multiple noise reduction treatment through the first noise reduction holes and the second noise reduction holes, the noise generated by the fan is gradually eliminated in the transmission process, and the noise reduction effect of the variable frequency motor is improved.

Description

Variable frequency motor with noise reduction structure

Technical Field

The utility model relates to the field of motor devices, in particular to a variable frequency motor with a noise reduction structure.

Background

The variable frequency motor is a motor which continuously operates within the rated speed range of 10% -100% with 100% rated load under the standard environment condition, the temperature rise can not exceed the motor calibration allowable value, but the current variable frequency motor can produce noise pollution during working operation, the noise source is partly due to noise generated by the operation of an internal rotor, a winding and a stator, and the noise generated by the operation of a cooling fan of the variable frequency motor is partly due to the noise which is easy to influence the working environment of a user.

Disclosure of Invention

The utility model mainly aims to provide a variable frequency motor with a noise reduction structure, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a from variable frequency motor who takes structure of making an uproar that falls, includes the shell, be equipped with the one deck layer of making an uproar that falls in the shell, the layer of making an uproar that falls adopts sound absorbing material to make, the inside one end of shell is equipped with the radiator fan that can dispel inside heat, radiator fan's outside one end is equipped with the fan cover, the inside first amortization hole of several and the several second amortization hole of having seted up of fan cover.

Preferably, the upper end in the outside of shell is connected with the terminal box, the outside bottom of shell is connected with the base that two symmetries set up, bolt fastening hole has been seted up to the bottom surface of base.

Preferably, the shell is provided with a rotating shaft in a penetrating manner, a cage rotor is connected to a part section of the rotating shaft in the shell, a circle of stator windings are arranged on the outer side of the cage rotor, a layer of stator iron core is wrapped on the outer side of the stator windings, a layer of inner shell is wrapped on the outer side of the stator iron core, the inner shell is located an inner cavity of the shell, a noise reduction layer made of a sound absorbing material is arranged on the inner wall of the inner shell, and a circle of cooling fins are wrapped on the outer side of the inner shell.

Preferably, the outside one end of shell is connected with the rear end cap through bolted connection mode, the outside other end of shell is connected with the front end housing through bolted connection mode, the inner wall of rear end cap and the inner wall of front end housing are equipped with the one deck amortization cotton, the inner wall intermediate position of rear end cap and the inner wall intermediate position of front end housing all are connected with the bearing frame, the bearing frame of rear end cap and the bearing frame of front end housing are passed in the pivot, the border position of front end housing has seted up the several heat extraction hole along circumference round, the clearance between heat extraction hole and shell and the inner shell communicates with each other.

Preferably, the pivot passes the front end housing and is connected with radiator fan, radiator fan's air outlet direction is equipped with the fan lid, the fan lid is connected with the front end housing through bolted connection mode, in the heat extraction hole is covered to the fan lid, the fan lid is equipped with the baffle towards radiator fan one side, the first amortization hole of several has been seted up on the baffle, radiator fan's one end was kept away from to the fan lid is equipped with the apron, the second amortization hole of several has been seted up on the apron, the puigging has been seted up between baffle and the apron, the puigging inner wall is equipped with sound insulation cotton, be equipped with the baffle in first amortization hole and the second amortization hole, the baffle is the type platform side of being in, the small one side of baffle cross section area is towards radiator fan side, the big one side of keeping away from radiator fan of baffle cross section area.

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

according to the utility model, the noise generated in the equipment during operation can be subjected to sound insulation treatment through the noise reduction layer, so that the noise is weakened and reduced, the influence on people and working environment caused by overlarge noise conduction is avoided, the noise pollution is reduced, the noise generated by the fan can be subjected to multiple noise reduction treatment through the first noise reduction holes and the second noise reduction holes, the noise generated by the fan is gradually eliminated in the conduction process, and the noise reduction effect of the variable frequency motor is improved.

Drawings

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

FIG. 2 is a schematic view of the rear end cap of the present utility model;

FIG. 3 is a schematic view of the front end cover of the present utility model;

FIG. 4 is a schematic structural view of the inner shell of the present utility model;

FIG. 5 is a schematic view showing the internal structure of the inner shell of the present utility model;

fig. 6 is a schematic structural view of the fan cover of the present utility model.

In the figure: 1. a housing; 2. a base; 3. a junction box; 4. a rotating shaft; 5. a front end cover; 6. a rear end cover; 7. a bearing seat; 8. a fan cover; 9. an inner case; 10. a heat sink; 11. a noise reduction layer; 12. a stator core; 13. a stator winding; 14. a cage rotor; 15. a heat radiation fan; 16. a heat discharging hole; 17. silencing cotton; 18. a first sound deadening hole; 19. a partition plate; 20. a sound insulation layer; 21. a second sound deadening hole; 22. a baffle; 23. and a cover plate.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-6, a variable frequency motor with a noise reduction structure comprises a housing 1, wherein a noise reduction layer 11 is arranged in the housing 1, the noise reduction layer 11 is made of a sound absorbing material, a cooling fan 15 capable of dissipating internal heat is arranged at one end inside the housing 1, a fan cover 8 is arranged at one end of the outer side of the cooling fan 15, and a plurality of first noise reduction holes 18 and a plurality of second noise reduction holes 21 are formed in the fan cover 8.

In the embodiment, the upper end of the outer side of the shell 1 is connected with a junction box 3, the junction box 3 is connected with an external circuit, the bottom of the outer side of the shell 1 is connected with two symmetrically arranged bases 2, and the bottom surface of the base 2 is provided with bolt fixing holes so as to be convenient for fixing the equipment;

in the embodiment, a rotating shaft 4 is arranged on the outer shell 1 in a penetrating manner, a cage-shaped rotor 14 is connected to a part of the rotating shaft 4, which is positioned in the outer shell 1, a circle of stator windings 13 is arranged on the outer side of the cage-shaped rotor 14, a layer of stator iron cores 12 is wrapped on the outer side of the stator windings 13, a layer of inner shell 9 is wrapped on the outer side of the stator iron cores 12, the inner shell 9 is positioned in an inner cavity of the outer shell 1, a noise reduction layer 11 made of a sound absorbing material is arranged on the inner wall of the inner shell 9, noise generated during operation of the cage-shaped rotor 14, the stator windings 13 and the stator iron cores 12 can be reduced through the noise reduction layer 11, noise transmission is reduced, a circle of radiating fins 10 are wrapped on the outer side of the inner shell 9, and internal heat can be conducted;

in the embodiment, one end of the outer side of the outer shell 1 is connected with a rear end cover 6 in a bolt connection mode, the other end of the outer side of the outer shell 1 is connected with a front end cover 5 in a bolt connection mode, a layer of noise reduction cotton 17 is arranged on the inner wall of the rear end cover 6 and the inner wall of the front end cover 5, noise pollution generated inside the inner shell 9 can be further weakened, the middle position of the inner wall of the rear end cover 6 and the middle position of the inner wall of the front end cover 5 are both connected with a bearing seat 7, the rotation of a rotating shaft 4 is facilitated, the rotating shaft 4 passes through the bearing seat 7 of the rear end cover 6 and the bearing seat 7 of the front end cover 5, a plurality of heat discharging holes 16 are formed in the edge position of the front end cover 5 along a circle, and the heat discharging holes 16 are communicated with gaps between the outer shell 1 and the inner shell 9, and heat between the outer shell 1 and the inner shell 9 can be discharged from the heat discharging holes 16;

in this embodiment, pivot 4 passes front end housing 5 and is connected with radiator fan 15, radiator fan 15's air outlet direction is equipped with fan cover 8, fan cover 8 is connected with front end housing 5 through bolted connection mode, heat release hole 16 is located fan cover 8 cover, be equipped with the soundproof layer 20 between shell 1 and the inner shell 9 like this, it can be blown by radiator fan 15 to disperse the heat from heat release hole 16, accelerate the radiating effect, fan cover 8 is equipped with baffle 22 towards radiator fan 15 one side, set up the first amortization hole 18 of several on the baffle 22, the noise that heat and radiator fan 15 produced passes first amortization hole 18, the one end that radiator fan 15 was kept away from to fan 8 is equipped with apron 23, set up the second amortization hole 21 on the apron 23, the noise that heat and radiator fan 15 produced passes the outside of second amortization hole 21 exhaust again, set up between baffle 22 and the apron 23, the soundproof layer 20 inner wall is equipped with the soundproof cotton, be equipped with the baffle 19 in the baffle 19, the one side that the baffle 19 cross section area is little is towards radiator fan 15 side, the baffle 19 is big towards the cross section area, the one side that the cross section area is big is kept away from radiator fan 15 like this, the noise that the cross section area is big is equipped with the second amortization hole is passed through again after the noise reduction hole is more through the first amortization hole 18, the noise reduction is further noise reduction, the noise reduction is carried out the noise reduction is more through the noise reduction between the first amortization hole and the noise reduction hole is more than the noise reduction hole is equipped with the first amortization hole, the noise reduction hole is more noise reduction, the noise reduction is passed through the noise reduction.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Variable frequency motor from structure of making an uproar falls in area, including shell (1), its characterized in that: be equipped with one deck layer of making an uproar layer (11) that falls in shell (1), layer of making an uproar (11) falls adopts sound absorbing material to make, the inside one end of shell (1) is equipped with radiator fan (15) that can dispel inside heat, radiator fan (15) are equipped with fan cover (8) towards outside one end, several first amortization hole (18) and several second amortization hole (21) have been seted up to fan cover (8) inside.

2. The variable frequency motor with the noise reduction structure according to claim 1, wherein: the novel electric power socket is characterized in that the junction box (3) is connected to the upper end of the outer side of the shell (1), two symmetrically arranged bases (2) are connected to the bottom of the outer side of the shell (1), and bolt fixing holes are formed in the bottom surface of the bases (2).

3. The variable frequency motor with the noise reduction structure according to claim 1, wherein: the motor is characterized in that the outer shell (1) is provided with a rotating shaft (4) in a penetrating manner, the rotating shaft (4) is connected with a cage-shaped rotor (14) on a part section positioned in the outer shell (1), a circle of stator winding (13) is arranged on the outer side of the cage-shaped rotor (14), a circle of stator iron core (12) is wrapped on the outer side of the stator winding (13), a circle of inner shell (9) is wrapped on the outer side of the stator iron core (12), the inner shell (9) is positioned in an inner cavity of the outer shell (1), a noise reduction layer (11) made of a sound absorbing material is arranged on the inner wall of the inner shell (9), and a circle of radiating fins (10) are wrapped on the outer side of the inner shell (9).

4. A variable frequency motor with noise reduction structure according to claim 3, characterized in that: the utility model discloses a novel heat-dissipating device for the solar heat collector is characterized in that a rear end cover (6) is connected to one end of the outer side of a shell (1) through a bolt connection mode, a front end cover (5) is connected to the other end of the outer side of the shell (1) through a bolt connection mode, one layer of noise reduction cotton (17) is arranged on the inner wall of the rear end cover (6) and the inner wall of the front end cover (5), bearing seats (7) are connected to the middle position of the inner wall of the rear end cover (6) and the middle position of the inner wall of the front end cover (5), a rotating shaft (4) penetrates through the bearing seats (7) of the rear end cover (6) and the bearing seats (7) of the front end cover (5), a plurality of heat-dissipating holes (16) are formed in the edge position of the front end cover (5) along a circle, and gaps between the heat dissipating holes (16) and the shell (1) and the inner shell (9) are communicated.

5. The variable frequency motor with the noise reduction structure according to claim 4, wherein: the fan cover is characterized in that the rotating shaft (4) penetrates through the front end cover (5) to be connected with the cooling fan (15), a fan cover (8) is arranged in the air outlet direction of the cooling fan (15), the fan cover (8) is connected with the front end cover (5) through a bolt connection mode, the heat exhausting holes (16) are formed in the fan cover (8) in a covering mode, the fan cover (8) is provided with a baffle plate (22) towards one side of the cooling fan (15), a plurality of first silencing holes (18) are formed in the baffle plate (22), one end, far away from the cooling fan (15), of the fan cover (8) is provided with a cover plate (23), a plurality of second silencing holes (21) are formed in the cover plate (23), an acoustic insulating layer (20) is formed between the baffle plate (22) and the cover plate (23), a baffle plate (19) is arranged in the first silencing holes (18) and the second silencing holes (21), the baffle plate (19) is of a truncated cone-like shape, one side, far away from the cooling fan (15) is small in cross section area, and one side, far away from the cooling fan (19) is large in cross section area, and faces one side, far away from the cooling fan (15).