CN218154670U

CN218154670U - Sound insulation cover for outdoor exhaust fan

Info

Publication number: CN218154670U
Application number: CN202222133164.4U
Authority: CN
Inventors: 王阳军
Original assignee: Changsha Lizhi Environmental Engineering Equipment Co ltd
Current assignee: Changsha Lizhi Environmental Engineering Equipment Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-12-27
Anticipated expiration: 2032-08-15

Abstract

The utility model discloses an outdoor exhaust fan sound-proof cover relates to exhaust fan technical field, including the housing, the fixed base that is provided with in inner wall bottom of housing, the fixed surface of base installs the fan, the top of fan is stayed and is equipped with the air intake, the inboard of air intake is fixed and has been installed the air inlet subassembly, the lateral wall of fan is stayed and is equipped with the air exit, the fixed cover that is equipped with of end department of the subassembly of airing exhaust. The utility model provides an outdoor exhaust fan sound insulation cover, the air current of exhaust pipe of flowing through is under the combined action of multiunit spoiler and toper exhaust pipe, the velocity of flow reduces to minimumly gradually, noise is showing and is reducing when making the air current flow, the sound insulation effect of sound insulation cover has been guaranteed, user's daily user demand has been satisfied, simultaneously through setting up the buffer block at the spoiler back, can cushion when spoiler and exhaust pipe inner wall contact, avoid the spoiler to bump with the exhaust pipe and produce the noise under the air current strikes.

Description

Sound insulation cover for outdoor exhaust fan

Technical Field

The utility model relates to an exhaust fan technical field specifically is an outdoor exhaust fan sound-proof cover.

Background

The exhaust fan achieves the ventilation effect by exhausting air indoors or outdoors, and the exhaust fan has higher noise in daily use, so the exhaust fan is generally assembled and matched with the sound insulation cover for use.

The common sound insulation cover of the outdoor exhaust fan generally adopts a single sound insulation structure to reduce the noise of the exhaust fan, namely, the sound insulation treatment is only carried out on one side of the air inlet end or the air outlet end of the exhaust fan, the single structure has limited treatment and absorption capacity of the noise generated when the exhaust fan operates, the sound insulation and noise reduction capacity of the exhaust fan is poor, and the use requirement of a user is difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outdoor exhaust fan sound-proof cover to solve the problem of outdoor exhaust fan sound-proof cover in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an outdoor exhaust fan sound-proof cover, includes the housing, the fixed base that is provided with in inner wall bottom of housing, the fixed surface of base installs the fan, the top of fan is stayed and is equipped with the air intake, the inboard fixed air inlet subassembly of having installed of air intake, the lateral wall of fan is stayed and is equipped with the air exit, the fixed subassembly of airing exhaust of having installed in the outside of air exit, the fixed cover that is equipped with in end department of the subassembly of airing exhaust, the fixed amortization wall of having installed of inner wall of housing.

Optionally, the air inlet subassembly includes the air-supply line, it has the sound of inhaling cotton to fill in the inner chamber of air-supply line, the through-hole has been seted up to the inner wall of air-supply line.

Optionally, the subassembly of airing exhaust includes the exhaust pipe, the spoiler has been installed in the inner wall activity of exhaust pipe, the fixed buffer block that is provided with of front end outer wall of spoiler, the round pin pole has been run through to the junction of spoiler and exhaust pipe, the outside cover of round pin pole is equipped with the torsional spring.

Optionally, the silencing wall is riveted to the housing, and is made of composite peak cotton material.

Optionally, the through holes are distributed on the inner wall of the air inlet pipe in an annular array, and the through holes are communicated with sound absorbing cotton filled in the inner cavity of the air inlet pipe.

Optionally, the exhaust pipe is arranged in a conical shape.

Optionally, the spoiler and the exhaust pipe form an elastic rotating structure through a torsion spring, the spoilers are distributed on the inner wall of the exhaust pipe in a horizontal array manner, and the length of the spoiler is sequentially prolonged.

The utility model discloses a technological effect and advantage:

1. outdoor exhaust fan sound-proof cover, when the air current flows through the spoiler, strike the spoiler, make the spoiler extrusion torsional spring rotate outwards, the air current velocity of flow slows down simultaneously, then the spoiler resets under the torsional spring action, continue to do the vortex to follow-up air current and slow down the processing, the air current is under the combined action of multiunit spoiler and toper exhaust pipe, the velocity of flow reduces to minimum gradually, noise is showing and is reducing when making the air current flow, the sound insulation effect of sound-proof cover has been guaranteed, user's daily use demand has been satisfied, simultaneously through set up the buffer block at the spoiler back, can cushion when the spoiler contacts with the exhaust pipe inner wall, avoid the spoiler to collide with the exhaust pipe and produce the noise under the air current strikes.

2. When the outdoor exhaust fan is used, external air flow enters from the air inlet pipe, the purpose of increasing the contact area between noise sound waves and the inner wall of the air inlet pipe is achieved through the through holes formed in the inner wall of the air inlet pipe, the energy of noise is weakened, the noise is reduced, the outdoor exhaust fan is matched with sound-absorbing cotton, the noise generated by the air flow in the air inlet pipe stage is processed, and the noise generated at the air inlet end of the outdoor exhaust fan when the outdoor exhaust fan is used is reduced.

Drawings

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

FIG. 2 is a schematic structural view of the air intake assembly of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a housing; 2. a base; 3. a fan; 4. an air inlet; 5. an air intake assembly; 51. an air inlet pipe; 52. sound-absorbing cotton; 53. a through hole; 6. an air outlet; 7. an air exhaust assembly; 71. an exhaust duct; 72. a spoiler; 73. a buffer block; 74. a pin rod; 75. a torsion spring; 8. a mesh enclosure; 9. a sound deadening wall.

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.

The utility model provides an acoustic shield of an outdoor exhaust fan as shown in figures 1-3, which comprises a shield shell 1; 2. a base; 3. a fan; 4. an air inlet; 5. an air intake assembly; 51. an air inlet pipe; 52. sound-absorbing cotton; 53. a through hole; 6. an air outlet; 7. an air exhaust assembly; 71. an exhaust duct; 72. a spoiler; 73. a buffer block; 74. a pin rod; 75. a torsion spring; 8. a mesh enclosure; 9. the noise reduction wall, the fixed base 2 that is provided with in inner wall bottom of housing 1, the fixed surface of base 2 installs fan 3, and air intake 4 is stayed at the top of fan 3, and the inboard of air intake 4 is fixed to be installed and is gone into air intake subassembly 5, and the lateral wall of fan 3 is stayed and is equipped with air exit 6, and the outside of air exit 6 is fixed to be installed and is aired exhaust subassembly 7, and the fixed cover in end department of the subassembly 7 of airing exhaust is equipped with screen panel 8, and the fixed noise reduction wall 9 of having installed of inner wall of housing 1.

The air inlet assembly 5 comprises an air inlet pipe 51, the inner cavity of the air inlet pipe 51 is filled with sound absorption cotton 52, and the inner wall of the air inlet pipe 51 is provided with a through hole 53.

The exhaust assembly 7 comprises an exhaust pipe 71, a spoiler 72 is movably arranged on the inner wall of the exhaust pipe 71, a buffer block 73 is fixedly arranged on the outer wall of the front end of the spoiler 72, a pin rod 74 penetrates through the joint of the spoiler 72 and the exhaust pipe 71, and a torsion spring 75 is sleeved outside the pin rod 74.

For riveting connection between amortization wall 9 and housing 1, and amortization wall 9 adopts the cotton material of compound crest to make, through set up the cotton amortization wall 9 of compound crest at housing 1 inner wall to guarantee the syllable-dividing effect of housing 1 self, further optimized the whole sound-proofing ability of sound-proof cover.

The through holes 53 are distributed on the inner wall of the air inlet pipe 51 in an annular array, and the through holes 53 are communicated with the sound absorbing cotton 52 filled in the inner cavity of the air inlet pipe 51, when the fan 3 is used, when external air flow enters from the air inlet pipe 51, the purpose of increasing the contact area between the noise sound wave and the inner wall of the air inlet pipe 51 is achieved through the through holes 53 arranged on the inner wall of the air inlet pipe 51, the energy of noise is weakened, the noise is further reduced, the noise is matched with the sound absorbing cotton 52, the noise generated by the air flow at the air inlet pipe 51 stage is treated, and the noise generated at the air inlet end of the fan 3 when the fan is used is reduced.

Exhaust pipe 71 adopts the toper setting, and through exhaust pipe 71's toper setting, its pipe diameter is along air inlet end to the continuous increase of air-out end direction, and then makes the air current velocity of flow reduce gradually along with the increase of exhaust pipe 71 pipe diameter to reach the purpose of making an uproar.

The spoilers 72 and the exhaust pipe 71 form an elastic rotating structure through the torsion springs 75, the spoilers 72 are horizontally distributed on the inner wall of the exhaust pipe 71 in an array manner, the length of the spoilers 72 is sequentially prolonged, when airflow flows through the spoilers 72, the spoilers 72 are impacted, the spoilers 72 extrude the torsion springs 75 to rotate outwards, meanwhile, the airflow speed is reduced, the spoilers 72 are reset under the elastic action of the torsion springs 75, the subsequent airflow is subjected to turbulence deceleration treatment continuously, the airflow is subjected to combined action of a plurality of groups of spoilers 72 and the conical exhaust pipe 71, the flow speed is gradually reduced to the lowest flow speed, noise is remarkably reduced when the airflow flows, the sound insulation effect of the sound insulation cover is ensured, the daily use requirements of users are met, meanwhile, the buffer blocks 73 are arranged on the back of the spoilers 72, the baffles 72 can be buffered when the spoilers are in contact with the inner wall of the exhaust pipe 71, and the noise generated due to collision of the spoilers 72 with the exhaust pipe 71 under the impact of the airflow is avoided.

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

1. The utility model provides an outdoor exhaust fan sound-proof cover, includes housing (1), its characterized in that: the fixed base (2) that is provided with in inner wall bottom of housing (1), the fixed surface of base (2) installs fan (3), the top of fan (3) is stayed and is equipped with air intake (4), air intake subassembly (5) have been installed to the inboard of air intake (4) is fixed, the lateral wall of fan (3) is stayed and is equipped with air exit (6), the outside of air exit (6) is fixed and has been installed exhaust subassembly (7), the fixed cover of end department of exhaust subassembly (7) is equipped with screen panel (8), the fixed amortization wall (9) of having installed of inner wall of housing (1).

2. The outdoor exhaust fan sound insulation cover according to claim 1, characterized in that: the air inlet subassembly (5) includes air-supply line (51), it inhales sound cotton (52) to fill in the inner chamber of air-supply line (51), through-hole (53) have been seted up to the inner wall of air-supply line (51).

3. The outdoor exhaust fan sound insulation cover according to claim 1, characterized in that: exhaust subassembly (7) include exhaust pipe (71), spoiler (72) have been installed in the inner wall activity of exhaust pipe (71), the fixed buffer block (73) that is provided with of front end outer wall of spoiler (72), pin rod (74) have been run through in spoiler (72) and the junction of exhaust pipe (71), the outside cover of pin rod (74) is equipped with torsional spring (75).

4. The outdoor exhaust fan sound insulation cover according to claim 1, characterized in that: the silencing wall (9) is riveted with the housing (1), and the silencing wall (9) is made of composite wave crest cotton material.

5. The outdoor exhaust fan sound insulation cover according to claim 2, characterized in that: the through holes (53) are distributed on the inner wall of the air inlet pipe (51) in an annular array, and the through holes (53) are communicated with sound-absorbing cotton (52) filled in the inner cavity of the air inlet pipe (51).

6. The outdoor exhaust fan sound-proof cover according to claim 3, characterized in that: the exhaust pipe (71) is arranged in a conical mode.

7. The outdoor exhaust fan sound-proof cover according to claim 3, characterized in that: the spoilers (72) and the exhaust pipe (71) form an elastic rotating structure through torsion springs (75), the spoilers (72) are distributed on the inner wall of the exhaust pipe (71) in a horizontal array mode, and the lengths of the spoilers (72) are sequentially prolonged.