CN220470321U

CN220470321U - Silencing structure of EC fan

Info

Publication number: CN220470321U
Application number: CN202321889006.XU
Authority: CN
Inventors: 李树胜; 王天刚; 訾春波
Original assignee: Chongqing Honghao Animal Husbandry Technology Co ltd
Current assignee: Chongqing Honghao Animal Husbandry Technology Co ltd
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2024-02-09
Anticipated expiration: 2033-07-18

Abstract

The utility model discloses a silencing structure of an EC fan, which comprises a shell, wherein a silencing pipe is arranged on the front surface of the shell, when an EC fan is used by a worker, generated noise is transmitted to the inner side of the silencing pipe through the shell, the noise passes through a through hole and is transmitted to the inner side of a sound insulation cavity, then the noise moves towards the front surface along the spiral direction under the guiding action of a spiral plate, the noise can meet the noise transmitted in other through holes in the moving process, under the collision of the two types of noise, part of the noise can be counteracted, then the noise passes through a gap of the spiral plate and enters the inner side of the elbow through one end connected with a baffle plate, the noise entering the other end of the elbow is counteracted again by the collision of the other end of the elbow and the former, and the rest part of the noise passes through the inner side of a vent hole and is absorbed by the sound insulation cotton, so that the EC fan can be silenced to a greater extent, and the silencing effect is improved.

Description

Silencing structure of EC fan

Technical Field

The utility model relates to the technical field of silencing structures, in particular to an EC fan silencing structure.

Background

The noise reduction structure is a device for reducing the noise of the EC fan, which can enable the air flow to smoothly pass through the equipment and reduce the volume of the noise, and can be divided into four types of resistance, compound type and exhaust emptying.

Patent document: CN218030711U is a novel fan silencer, "including fan silencer main part, one side swing joint of fan silencer main part has the baffle, the equal fixedly connected with butt joint board in the left and right sides of baffle, the butt joint groove has all been seted up to the one side that the butt joint board is close to fan silencer main part, the equal fixedly connected with mouth of pipe in one side that the fan silencer main part is close to the butt joint groove, first chamfer has all been seted up to the upper and lower both sides of butt joint groove. The utility model has the advantages that: through setting up first chamfer and picture peg, convenient operation has reached the purpose that can be convenient for supplementary fan muffler main part quick installation and dismantlement to the convenience when promoting fan muffler main part maintenance, through setting up baffle, butt joint board and connecting pipe, simple structure has reached when installing can be earlier through installing baffle, butt joint board and connecting pipe and pipeline, and because whole weight is lighter, thereby the staff of being convenient for moves. The above publications mainly disclose technical problems how to facilitate the handling of the staff.

The existing silencing structure is usually a silencing pipe or a silencer installed in an EC fan, the silencing effect generated by the existing silencing structure is limited, the silencing effect on the EC fan is inconvenient to improve, the silencing effect is low, and the requirements of staff are not met.

Disclosure of Invention

The utility model aims to provide an EC fan silencing structure which can solve the technical problems that in the prior art, the silencing effect on an EC fan is inconvenient to improve and the silencing effect is low.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the silencing structure of the EC fan comprises a shell, wherein a silencing pipe is arranged on the front surface of the shell;

the inside of muffler has seted up the sound insulation chamber, the sound insulation chamber has been seted up to the inside of muffler, install the baffle between sound insulation chamber and the sound insulation chamber, the screw plate is installed to the inboard in sound insulation chamber, the muffler corresponds the inside of screw plate interval and runs through and set up a plurality of through-holes, and the through-hole communicates with each other with the sound insulation chamber, a plurality of return bends are installed in the inside run through of baffle, and the return bend is located the inboard in sound insulation chamber, a plurality of ventilation holes have been seted up in the inside run through of return bend.

Preferably, the motor is installed to a plurality of solid poles of inboard installation of casing, and the ring is installed to the one end of solid pole that is close to positive solid pole, and the outside at the motor output is installed through the bearing to the ring, and the fan is installed in the outside of motor output, and the fan is located the front of ring.

Preferably, one end of the elbow pipe is installed inside the silencing pipe in a penetrating way.

Preferably, the inner side of the silencing cavity is provided with silencing cotton, and the silencing cotton is positioned at the outer side of the bent pipe.

Preferably, the top and the bottom of the shell are provided with cylinders, one side of the cylinder far away from the shell is provided with a screw rod, and the outer side of the screw rod is provided with a nut in a threaded manner.

Preferably, the back of the silencing pipe is provided with a fixing ring, and an L hole is formed in the fixing ring in a penetrating mode. Preferably, the inner side of the L hole is provided with a jogged block, the jogged block is positioned at the inner side of the L hole, the bottom of the jogged block is provided with a column groove, and the column groove is positioned at the outer side of the column.

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

1. according to the utility model, through the installation of the through holes, the direction of the through holes faces the fan, the noise generated by a worker when using the EC fan can be better absorbed, the noise is transmitted to the inner side of the silencing pipe through the shell, the noise passes through the through holes and is transmitted to the inner side of the sound insulation cavity, then the noise moves towards the front side along the spiral direction under the guiding action of the spiral plate, the noise can meet the noise transmitted in other through holes in the moving process, and under the collision of the two types of noise, part of the noise can be counteracted, then the noise passes through the gap of the spiral plate and enters the inner side of the elbow through one end connected with the baffle, the noise entering the other end of the elbow collides with the former again, and the rest part of the noise passes through the vent hole and enters the inner side of the silencing cotton to be absorbed by the silencing cotton.

2. According to the utility model, the cylinder groove and the embedded block are arranged to be matched, so that the silencer pipe is fixed more firmly, when a worker needs to disassemble the device, the worker grabs the nut to rotate, the nut rotates by taking the screw as the center of a circle under the action of external force, the nut rotates and moves in the direction away from the shell under the action of the screw thread, the nut is disassembled, then the worker grabs the embedded block to move in the direction away from the shell, the embedded block moves out of the inner side of the L hole under the action of the external force, the fixation of the cylinder is released, the worker grabs the silencer pipe to rotate, the silencer pipe rotates clockwise by taking the shell as the center of a circle under the action of the external force, the worker grabs the shell and the silencer pipe to move in the direction away from each other, the cylinder moves out of the inner side of the L hole, the silencer pipe is disassembled, and the silencer pipe is conveniently disassembled by the worker.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic diagram of a housing structure according to the present utility model;

FIG. 3 is a schematic view of the muffler pipe according to the present utility model;

FIG. 4 is a schematic view of the L-pore structure of the present utility model;

fig. 5 is a schematic block structure of the present utility model.

In the figure: 1. a housing; 2. a fixed rod; 3. a motor; 4. a circular ring; 5. a fan; 6. a muffler pipe; 7. a sound-insulating cavity; 8. a sound deadening chamber; 9. a partition plate; 10. a spiral plate; 11. a through hole; 12. bending the pipe; 13. silencing cotton; 14. a cylinder; 15. a screw; 16. a fixing ring; 17. l holes; 18. a fitting block; 19. a column groove; 20. a nut; 21. and (3) a vent hole.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only one embodiment of the present utility model, 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.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It will be apparent to those skilled in the art that the specific meaning of the terms described above in the present utility model may be practiced in specific cases.

Referring to fig. 1, 2 and 3, an EC fan silencing structure;

including casing 1, a plurality of solid poles 2 are installed to the inboard of casing 1, motor 3 is installed to the one end of solid pole 2, ring 4 is installed to the one end that is close to positive solid pole 2, and ring 4 passes through the bearing and install in the outside of motor 3 output, fan 5 is installed in the outside of motor 3 output, and fan 5 is located the front of ring 4, silencer 6 is installed in the front of casing 1, casing 1 can provide firm support for solid pole 2, solid pole 2 can provide firm support for motor 3 and ring 4, work starts motor 3 and drives fan 5 rotation, produce air current and noise, the air current passes silencer 6 and continues to move, the noise passes silencer 6 and carries out the amortization.

Referring to fig. 1, 2 and 3, an EC fan silencing structure;

comprises a sound insulation cavity 7, a sound insulation cavity 7 is arranged in the sound insulation pipe 6, a sound insulation cavity 8 is arranged in the sound insulation pipe 6, a partition plate 9 is arranged between the sound insulation cavity 8 and the sound insulation cavity 7, a spiral plate 10 is arranged at the inner side of the sound insulation cavity 7, a plurality of through holes 11 are formed in the sound insulation pipe 6 corresponding to the inner parts of the spiral plate 10 in a penetrating mode, the through holes 11 are communicated with the sound insulation cavity 7, a plurality of bent pipes 12 are arranged in the partition plate 9 in a penetrating mode, the bent pipes 12 are located at the inner side of the sound insulation cavity 8, a plurality of ventilation holes 21 are formed in the bent pipes 12 in the penetrating mode, one end of each bent pipe 12 is arranged in the sound insulation pipe in a penetrating mode, sound insulation cotton 13 is arranged at the inner side of the sound insulation cavity 8, the sound insulation cotton 13 is located at the outer side of the bent pipes 12, the sound insulation pipe 6 can provide penetrating space for the sound insulation cavity 7, the sound insulation pipe 6 can provide placing space for the baffle, when an EC fan is used by a worker, generated noise is transmitted to the inner side of the silencing pipe 6 through the shell 1, the noise is transmitted to the inner side of the sound insulation cavity 7 through the through hole 11, then the noise moves towards the front side along the spiral direction under the guiding action of the spiral plate 10, the noise can meet the noise transmitted by other through holes 11 in the moving process, part of the noise can be counteracted under the collision of the two types of noise, then the noise enters the inner side of the elbow 12 through the gap of the spiral plate 10 and one end connected with the baffle plate, the noise entering the other end of the elbow 12 collides with the former again, the rest part of the noise enters the inner side of the silencing cotton 13 through the vent hole 21 and is absorbed by the silencing cotton 13, the EC fan can be silenced to a large extent, and the silencing effect is improved.

Referring to fig. 1, 4 and 5, an EC fan silencing structure;

the device comprises a cylinder 14, wherein the cylinder 14 is arranged at the top and the bottom of a shell 1, a screw 15 is arranged at one side of the cylinder 14 far away from the shell 1, a nut 20 is arranged at the outer side thread of the screw 15, a fixed ring 16 is arranged at the back of a silencer pipe 6, an L hole 17 is formed in the inner side of the fixed ring 16 in a penetrating manner, a jogged block 18 is arranged at the inner side of the L hole 17, a column groove 19 is formed at the bottom of the jogged block 18, the column groove 19 is arranged at the outer side of the cylinder 14, when a worker needs to disassemble the device, the nut 20 is rotated by taking the screw 15 as a center of a circle under the action of an external force, the nut 20 is rotated in a direction far away from the shell 1 under the action of the screw thread of the screw 15, the nut 20 is disassembled, then the jogged block 18 is moved away from the inner side of the L hole 17 under the action of the external force, the fixation of the cylinder 14 is relieved, the silencer pipe 6 is rotated by the worker, the silencer pipe 1 is rotated clockwise by taking the shell 1 as the center of the external force, the opening of the back of the L hole 17 of the cylinder 14, the silencer pipe 1 is removed by the worker, the worker is moved away from the silencer pipe 6, and the silencer pipe 6 is disassembled by the worker in the direction far away from the direction from the L hole 6.

Working principle: before the device is used, whether the device has a problem of influencing the use or not is checked, when a worker needs to use the device, the noise generated by the worker passes through the through holes 11 and enters into the gaps of the spiral plate 10, the noise moves in the gaps and collides with and counteracts the noise entering at other through holes 11, then the noise collides and counteracts again at the bent pipe 12, and the rest of the noise enters into the inner side of the noise-reducing cotton 13 through the ventilation holes 21 and is absorbed by the noise-reducing cotton 13, so that the noise is reduced to a large extent.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a EC fan amortization structure, includes casing (1), its characterized in that: the front surface of the shell (1) is provided with a silencing pipe (6);

the inside of muffler pipe (6) has been seted up sound insulation chamber (7), the inside of muffler pipe (6) has been seted up amortization chamber (8), install baffle (9) between amortization chamber (8) and sound insulation chamber (7), screw plate (10) are installed to the inboard of sound insulation chamber (7), a plurality of through-holes (11) have been seted up in the inside of muffler pipe (6) corresponding screw plate (10) spaced, and through-hole (11) communicate with each other with sound insulation chamber (7), a plurality of return bends (12) are installed in the inside run-through of baffle (9), and return bend (12) are located the inboard of amortization chamber (8), a plurality of ventilation holes (21) have been seted up in the inside run-through of return bend (12).

2. The EC fan silencing structure of claim 1, wherein: the motor is characterized in that a plurality of fixed rods (2) are arranged on the inner side of the shell (1), a motor (3) is arranged at one end of each fixed rod (2), a circular ring (4) is arranged at one end, close to the front, of each fixed rod (2), the circular ring (4) is arranged on the outer side of the output end of the motor (3) through a bearing, a fan (5) is arranged on the outer side of the output end of the motor (3), and the fan (5) is located on the front face of the circular ring (4).

3. The EC fan silencing structure of claim 1, wherein: one end of the bent pipe (12) is installed inside the silencing pipe (6) in a penetrating way.

4. An EC fan noise attenuation structure according to claim 3, wherein: the inner side of the silencing cavity (8) is provided with silencing cotton (13), and the silencing cotton (13) is positioned at the outer side of the bent pipe (12).

5. The EC fan silencing structure of claim 2, wherein: the top and the bottom of casing (1) are installed cylinder (14), and screw rod (15) is installed to one side that cylinder (14) kept away from casing (1), and nut (20) is installed to the outside screw thread of screw rod (15).

6. The EC fan silencing structure of claim 5, wherein: the back of the silencing pipe (6) is provided with a fixed ring (16), and an L hole (17) is formed in the fixed ring (16) in a penetrating mode.

7. The EC fan silencing structure of claim 6, wherein: the inner side of the L hole (17) is provided with a jogged block (18), the jogged block (18) is positioned at the inner side of the L hole (17), the bottom of the jogged block (18) is provided with a column groove (19), and the column groove (19) is positioned at the outer side of the column (14).