CN106015111A

CN106015111A - Mute fan

Info

Publication number: CN106015111A
Application number: CN201610378687.1A
Authority: CN
Inventors: 冯洁莹
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-31
Filing date: 2016-05-31
Publication date: 2016-10-12
Anticipated expiration: 2036-05-31
Also published as: CN106015111B

Abstract

The invention discloses a mute fan. The mute fan comprises a fan main body, wherein an air inlet is formed in one side of the fan main body; the fan main body is hollow; an air chamber is formed in the fan main body; the hollow part of the fan main body surrounds the outside of the air chamber; the air inlet is provided with a sound absorbing piece and a top cover; the top cover is arranged at one end, which is away from the fan main body, of the air inlet; a projection part is formed in the middle of the side, which is close to the fan main body, of the top cover; a conical surface is formed on the periphery of the projection part; a first extension part is formed at the edge, which is positioned on the outer side of the air inlet, of the top cover; one end, which is close to the fan main body, of the sound absorbing piece surrounds the inner side of the air inlet; the other end, which is away from the fan main body, of the sound absorbing piece surrounds the inner side of the top cover; the diameter of the conical surface is gradually increased from one end which is close to the fan main body to the other end which is away from the fan main body; and the first extension part is gradually inclined to the direction close to the sound absorbing piece from one end which is close to the fan main body to the other end which is away from the fan main body. The mute fan is good in noise reduction property.

Description

A kind of quiet blower fan

Technical field

The present invention relates to blower fan technical field, particularly relate to a kind of quiet blower fan.

Background technology

General centrifugal blower is during running, and the air inlet at fan main body installs one at a high speed The impeller of operating, carries out convulsion by this impeller, but due to impeller and air severe friction, meeting Produce the biggest noise, cause the most most existing blower fan operationally can produce and make an uproar more greatly Sound, it is impossible to be applied in the environment higher to peace and quiet degree requirement.For realizing muting function, existing General by directly arranging the structures such as Sound-proof material on existing blower housing in the industry, but sound insulation effect Fruit is the best.

Summary of the invention

In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of quiet wind Machine, it can improve the quiet performance of blower fan.

The purpose of the present invention realizes by the following technical solutions:

A kind of quiet blower fan, including fan main body, the side of fan main body offers air inlet； Fan main body is to be formed with an air compartment in hollow form, and fan main body, the hollow bulb of fan main body Divide and enclose the outside being located at air compartment；This air compartment connects with air inlet；Air inlet be provided with sound-absorbing part and Top cover, top cover is located at air inlet one end away from fan main body, and the end of top cover and fan main body Interval, face forms an air intake gap, and this air intake gap connects with air inlet；Top cover is near blower fan master The middle part of the side of body forms projection portion towards near the direction of fan main body protrusion, projection portion Periphery forms taper surface；Top cover is positioned at the edge outside air inlet and forms the first extension；Sound-absorbing Part encloses the inner side being located at air inlet near one end of fan main body, and sound-absorbing part is away from fan main body The inner side being located at top cover is enclosed in one end, and projection portion is positioned at the inner side of sound-absorbing part, the first extending part in The outside of sound-absorbing part；The diameter of described taper surface by the one end near fan main body to away from blower fan One end of main body is gradually increased；First extension by the one end near fan main body to away from blower fan One end of main body gradually tilts towards near the direction of sound-absorbing part.

Preferably, inwall and the sound-absorbing part of air inlet sets near the outer wall interval, end of fan main body Put and formed a sound-absorbing gap；And the inwall of air inlet is by the most close top cover in one end away from top cover One end gradually away from sound-absorbing part direction tilt.

Preferably, being installed with an air intake cylinder in air inlet, sound-absorbing part is near one end of fan main body It is attached on the inwall of air intake cylinder；Offer on the sidewall of air intake cylinder and multiple to connect with air inlet Fresh air inlet.

Preferably, the outer wall of air intake cylinder is provided with multiple connector, and this connector includes first even Contact pin and second connects sheet, and a connecting piece is fixing with described first extension to be connected, and second Connection sheet is fixing with the end wall of described air inlet to be connected.

Preferably, air intake cylinder is provided with the air intake grid connected with air inlet near one end of fan main body Lattice, the intake of the plurality of fresh air inlet is more than the intake of air intake grid.

Preferably, multiple fresh air inlets include all moving into central axis circumference array multiple of air duct First fresh air inlet and multiple second fresh air inlet, multiple first fresh air inlets are distributed in air intake cylinder away from wind One end of owner's body；Multiple second fresh air inlets are distributed in air intake cylinder one end near fan main body.

Preferably, fan main body is fastened formed by the first housing and second housing of hollow, and first Housing forms the first recess near the sunken end face of the second housing, close first shell of the second housing The sunken end face of body forms the second recess, and described air compartment is enclosed jointly by the first recess and the second recess Become.

Preferably, the second housing has to enclose on the end face of the first housing and is located at the second recess First protuberance in outside, this first protuberance offers on the end face of the first housing to be had 3rd recess of opening, described opening direction is towards the first housing；First housing is near the second shell Having sealing on the end face of body, this sealing is used for being covered on described opening so that sealing A seal clearance is jointly surrounded, between sealing near the end face of the first housing, the inwall of the 3rd recess Sound-absorbing material layer it is filled with in gap.

Preferably, the first protruding parts forms a first surface in the outside of the 3rd recess, seals Portion is positioned at the outside of described opening and has one first extension, and this first extension has one and is sticked The second curved surface outside first surface.

Preferably, the first housing is provided with near the end face of the second housing and is positioned at outside the first recess 4th recess, the second housing is provided with near the end face of the first housing and is positioned at outside the first protuberance Second protuberance, this second protuberance is used for being embedded in the 4th recess；And the 4th recess and In two protuberances, cross-under has for making the first housing and the second housing fixing connection the first connection post.

Compared to existing technology, the beneficial effects of the present invention is: its impeller producing noise is installed In air compartment, and fan main body is hollow form, and fan main body hollow space encloses and is located at outside air compartment Portion, through air compartment and Blower Housing outside the noise of such impeller generation and fan main body The most outwards spread out of after two cavitys of hollow space, and then obstructed noise the most significantly Outside propagation；It addition, be provided with sound-absorbing part and top cover in air inlet, make one end of sound-absorbing part Enclosing the inner side being located at air inlet, the other end of sound-absorbing part encloses and is located at outside the projection portion of top cover, and The taper surface diameter that the periphery of projection portion is formed by near one end of fan main body to away from blower fan One end of main body is gradually increased, so can be by anti-by the noise sound wave in air inlet incoming sound-absorbing part It is incident upon on sound-absorbing part inwall, improves the sound-absorbing efficiency of sound-absorbing part；Same, the first of top cover prolongs Extending portion is gradually inhaled towards close to the one end away from fan main body by near one end of fan main body The direction of sound part tilts, it is possible to reflexed to outside sound-absorbing part by the noise part spread out of through air inlet On wall, improve the sound-absorbing efficiency of sound-absorbing part further, thus improve the performance muffler of whole blower fan.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the decomposition texture schematic diagram of the present invention；

Fig. 3 is the decomposition texture schematic diagram of the fan main body of the present invention；

Fig. 4 is the cross section structure schematic diagram of the present invention；

Fig. 5 is structure enlarged diagram at the A in Fig. 4.

In figure: 100, fan main body；10, air intake gap；20, top cover；21, projection portion； 22, the first extension；30, sound-absorbing part；40, air intake cylinder；41, the first fresh air inlet；42、 Second fresh air inlet；43, a connecting piece；44, second connects sheet；45, air intake grid；50、 Sound-absorbing gap；60, the first housing；61, air inlet；62, the first recess；63, sealing； 14, the second curved surface；70, the second housing；71, the second recess；72, the 3rd recess；73、 First surface；74, the first protuberance；75, the second protuberance；80, seal clearance；90、 Sound-absorbing material layer；200, impeller.

Detailed description of the invention

Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:

The quiet blower fan of one as Figure 1-5, including fan main body 100, fan main body 100 Side offer air inlet 61, fan main body 100 is in hollow form, and fan main body 100 Inside being formed with an air compartment, this air compartment connects with air inlet 61；The hollow bulb of fan main body 100 Divide and enclose the outside being located at air compartment；The impeller 200 being used for convulsion be may be installed in this air compartment, as This whole blower fan can normally work, and the noise that in air compartment, the impeller 200 of operating produces can be by Spread out of again after two cavitys of the hollow space of this air compartment and the first housing 60, and then can be layer by layer Obstruct is made an uproar sonic propagation, has obstructed the outside propagation of noise the most significantly so that should The muting function of housing is good.

It addition, be provided with sound-absorbing part 30 and top cover 20 at air inlet 61, concrete top cover 20 sets In air inlet 61 away from one end of fan main body 100, and top cover 20 and fan main body 100 End surfaces forms an air intake gap 10, and this air intake gap 10 connects with air inlet 61, uses In fan main body 100 air intake.Top cover 20 near the side of fan main body 100 middle part towards Protrude near the direction of fan main body 100 and form projection portion 21, and the periphery shape of projection portion 21 Tapered, top cover 20 is positioned at the edge outside air inlet 61 and forms the first extension 22.

Additionally, above-mentioned sound-absorbing part 30 encloses near one end of fan main body 100 is located at air inlet 61 Inner side so that sound-absorbing part 30 encloses away from one end of fan main body 100 is located at above-mentioned top cover 20 Inner side, concrete projection portion 21 is positioned at the inner side of sound-absorbing part 30, and the most described taper surface is positioned at suction The inner side of sound part 30, and the first extension 22 is positioned at the outside of sound-absorbing part 30；Meanwhile, The diameter of described taper surface by the one end near fan main body 100 to away from fan main body 100 One end is gradually increased；And the first extension 22 by near fan main body 100 one end to away from One end of fan main body 100 gradually tilts towards near the direction of sound-absorbing part 30.

On the basis of said structure, due to the noise meeting produced that runs up at air inlet 61 By in air inlet 61 incoming sound-absorbing part 30, entering the noise sound wave in sound-absorbing part 30 can be through convex If the taper surface in portion 21 reflexes on the inwall of sound-absorbing part 30, so this noise sound wave can be inhaled Sound part 30 absorbs, and improves the sound-absorbing effect of sound-absorbing part 30；And by the incoming outside of air inlet 61 Noise sound wave can reach on the outer wall of sound-absorbing part 30 through the reflection of above-mentioned first extension 22, This noise sound wave can be absorbed by sound-absorbing part 30 equally, thus improves the erasure effect of whole blower fan.

Preferably, in the present embodiment, the inwall of air inlet 61 and sound-absorbing part 30 are near blower fan The outer wall interval, end of main body 100 arranges and forms a sound-absorbing gap 50；And air inlet 61 Inwall by away from fan main body 100 one end near fan main body 100 one end gradually towards Tilt near sound-absorbing part 30 direction, on this architecture basics, air inlet 61 noise spread out of Sound wave part can enter in above-mentioned sound-absorbing gap 50, and this partial noise waves can be at above-mentioned air intake Reflex to equally on sound-absorbing part 30 inwall under the effect of mouth 61 inwalls, thus by sound-absorbing part 30 Absorb, improve the erasure effect of whole blower fan further.

Preferably, can a fixed air intake cylinder 40 in above-mentioned air inlet 61 so that sound-absorbing part 30 It is attached on the inwall of air intake cylinder 40 near one end of fan main body 100；The side of air intake cylinder 40 Offer multiple fresh air inlet connected with air inlet 61 on wall, so spread out of by air inlet 61 Noise sound wave can be through directly being absorbed by sound-absorbing part 30 through fresh air inlet, and sound-absorbing effect is more preferable.When So, the installation of this air intake cylinder 40 also allows for the installation of above-mentioned sound-absorbing part 30.

The outer wall of concrete air intake cylinder 40 is provided with multiple connector, and this connector includes first even Contact pin 43 and second connects sheet 44, and a connecting piece 43 is solid with described first extension 22 Fixed connection, the second connection sheet 44 is fixing with the end wall of described air inlet 61 to be connected, on the one hand can Directly being fixed on fan main body 100 by air intake cylinder 40, another conveniently also makes above-mentioned sound-absorbing part 30 are preferably arranged in air inlet 61 so that sound-absorbing part 30 can as far as possible absorb more by The noise sound wave that air inlet 61 spreads out of.

Further, also can be provided with near one end of fan main body 100 at above-mentioned air intake cylinder 40 The air intake grid 45 connected with air inlet 6110 so that the noise sound wave spread out of from blower interior As much as possible spread out of from air intake cylinder 40, it is simple to it is absorbed by sound-absorbing part 30；It addition, it is above-mentioned The intake of the plurality of fresh air inlet, more than the intake of air intake grid 45, so facilitates more Sound-absorbing part 30 outer wall that is attached on air intake cylinder 40 inwall of noise sound wave directly absorb, carry High sound-absorbing efficiency.

Further, multiple fresh air inlets include multiple first fresh air inlet 41 and multiple second air intake Hole 42, multiple first fresh air inlets 41 and multiple second fresh air inlet 42 all move in air duct 40 Mandrel line circumference array, and multiple first fresh air inlet 41 is distributed in air intake cylinder 40 away from blower fan master One end of body 100；Multiple second fresh air inlets 42 are distributed in air intake cylinder 40 near fan main body One end of 100, the first fresh air inlet 41 that one of which is neighbouring and the second fresh air inlet 42 with Can be formed between the first fresh air inlet 41 and the second fresh air inlet 42 that another adjacent group is neighbouring " cross " reinforcement so that the structure of air intake cylinder 40 is more firm.

Preferably, in the present embodiment, above-mentioned fan main body 100 can be by the first housing 60 He Second housing 70 fastens and is formed, and concrete first housing 60 is hollow, and the first housing 60 Forming the first recess 62 near the sunken end face of the second housing 70, the second housing 70 is near the The sunken end face of one housing 60 forms the second recess 71, and above-mentioned air compartment is by the first recess 62 He Second recess 71 surrounds jointly, the noise that the impeller 200 that is so arranged in air compartment produces by Spread out of again after two cavitys of the hollow space of this air compartment and the first housing 60, and then can be layer by layer Obstruct is made an uproar sonic propagation, has obstructed the outside propagation of noise the most significantly so that should The muting function of housing is good.

It is located at it addition, have to enclose on the end face of the first housing 60 at the second housing 70 The first protuberance 74 outside two recess 71, this first protuberance 74 is near the first housing 60 End face on offer the 3rd recess 72 with opening, described opening direction is towards the first shell Body 60；Accordingly, on the end face of the second housing 70, there is sealing at the first housing 60 Portion 63, this sealing 63 is used for being covered in described opening, and such sealing 63 is near The end face of one housing 60, the inwall of the 3rd recess 72 surround a seal clearance 80 jointly, Sound-absorbing material layer 90 is filled in this seal clearance 80；On the basis of said structure, by air compartment The noise outwards spread out of can be through seal clearance 80, thus by the attraction material in seal clearance 80 The bed of material absorbs, and meanwhile also to intercept noise the most further outside for seal clearance 80 Propagate, reach the most quiet effect.

Preferably, in the present embodiment, the first protuberance 74 is positioned at the outside of the 3rd recess 72 Forming a first surface 73, same, sealing 63 is positioned at the outside of described opening and has one Second extension, this second extension has one second curved surface 14, is fastening the first housing 60 During with the second housing 70, it is outside that the second curved surface 14 can be attached at first surface 73, so on State sealing 63 and contact with the 3rd recess 72 more tight, the noise reduction effect in this position can be strengthened Really.

For the most firm attachment structure between first housing 60 and the second housing 70, Can be provided with near the end face of the second housing 70 at the first housing 60 and be positioned at outside the first recess 62 The 4th recess, same, be provided with position at the second housing 70 near the end face of the first housing 60 The second protuberance 75 outside the first protuberance 74, at the first housing 60 and the second housing During 70 fastening, this second protuberance 75 is used for being embedded in the 4th recess, convenient location；With In Shi tetra-recess and the second protuberance 75, cross-under one first connects post, is used for making the first shell Body 60 is fixing with the second housing 70 to be connected.Further, also can be at sealing 63 and the 3rd In recess 72, cross-under has the second connection post, is also used for equally making the first shell and the second housing 70 solid Fixed connection.Certainly, above-mentioned first connection post and the second connection post all can use bolt or screw Deng connector.

Certainly, in the present embodiment, above-mentioned sound-absorbing part 30 concretely suction in tubular structure Sound is cotton, and sound-absorbing material layer 90 also can be selected for acoustical cotton, concrete employing acoustical cotton on the one hand energy Enough absorb the internal noise produced of fan main body 100, on the other hand also can be in the process at air intake In, also can play the effect filtering dust, make the internal cleaning that keeps of fan main body 100, raising Electrical machinery life.

It will be apparent to those skilled in the art that can technical scheme as described above and structure Think, make other various corresponding changes and deformation, and all these changes and deformation Within all should belonging to the protection domain of the claims in the present invention.

Claims

1. a quiet blower fan, including fan main body, the side of fan main body offers air intake Mouthful；It is characterized in that, fan main body is to be formed with an air compartment in hollow form, and fan main body, The hollow space of fan main body encloses the outside being located at air compartment；This air compartment connects with air inlet；Air intake Mouth is provided with sound-absorbing part and top cover, and top cover is located at air inlet one end away from fan main body, and top Lid forms an air intake gap with the end surfaces of fan main body, and this air intake gap is with air inlet even Logical；Top cover protrudes shape near the middle part of the side of fan main body towards near the direction of fan main body Becoming projection portion, the periphery of projection portion forms taper surface；Top cover is positioned at the edge shape outside air inlet Become the first extension；Sound-absorbing part encloses the inner side being located at air inlet near one end of fan main body, inhales Sound part encloses the inner side being located at top cover away from one end of fan main body, and projection portion is positioned at sound-absorbing part Side, the first extending part is in the outside of sound-absorbing part；The diameter of described taper surface is by near blower fan master One end of body is gradually increased to the one end away from fan main body；First extension is by near blower fan master One end of body gradually tilts towards near the direction of sound-absorbing part to the one end away from fan main body.

Quiet blower fan the most as claimed in claim 1, it is characterised in that the inwall of air inlet And sound-absorbing part arranges near the outer wall interval, end of fan main body and forms a sound-absorbing gap；And enter The inwall in air port by away from top cover one end near one end of top cover gradually away from sound-absorbing Part direction tilts.

Quiet blower fan the most as claimed in claim 1, it is characterised in that fixed in air inlet Having an air intake cylinder, sound-absorbing part is attached on the inwall of air intake cylinder near one end of fan main body；Enter Multiple fresh air inlet connected with air inlet is offered on the sidewall of air duct.

Quiet blower fan the most as claimed in claim 3, it is characterised in that the outer wall of air intake cylinder Be provided with multiple connector, this connector include a connecting piece and second connect sheet, first Connection sheet is fixing with described first extension to be connected, and second connects the end wall of sheet and described air inlet Fixing connection.

Quiet blower fan the most as claimed in claim 3, it is characterised in that air intake cylinder is near wind One end of owner's body is provided with the air intake grid connected with air inlet, the air intake of the plurality of fresh air inlet Amount is more than the intake of air intake grid.

Quiet blower fan the most as claimed in claim 3, it is characterised in that multiple fresh air inlet bags Multiple first fresh air inlets and multiple second including the central axis circumference array all moving into air duct enter Air holes, multiple first fresh air inlets are distributed in air intake cylinder one end away from fan main body；Multiple second Fresh air inlet is distributed in air intake cylinder one end near fan main body.

Quiet blower fan the most as claimed in claim 1, it is characterised in that fan main body by The first empty housing and the second housing fasten and are formed, and the first housing is recessed near the end face of the second housing Falling into and form the first recess, it is recessed that the sunken end face near the first housing of the second housing forms second Position, described air compartment is surrounded jointly by the first recess and the second recess.

Quiet blower fan the most as claimed in claim 7, it is characterised in that the second housing is close Having on the end face of the first housing and enclose the first protuberance being located at outside the second recess, this is first years old Protuberance offers the 3rd recess with opening, described opening on the end face of the first housing Direction is towards the first housing；First housing has sealing on the end face of the second housing, should Sealing for be covered on described opening so that sealing near the first housing end face, the 3rd The inwall of recess surrounds a seal clearance jointly, is filled with sound-absorbing material layer in seal clearance.

Quiet blower fan the most as claimed in claim 7, it is characterised in that the first protruding parts Forming a first surface in the outside of the 3rd recess, sealing is positioned at the outside of described opening to be had One second extension, this second extension has second curved surface being attached at outside first surface.

Quiet blower fan the most as claimed in claim 7, it is characterised in that the first housing is close The end face of the second housing is provided with the 4th recess being positioned at outside the first recess, and the second housing is near The end face of one housing is provided with the second protuberance being positioned at outside the first protuberance, this second protuberance In being embedded at the 4th recess；And the 4th cross-under in recess and the second protuberance have for making One housing and the second housing fixing connection the first connection post.