CN108731057A - Range hood - Google Patents

Abstract

The present invention discloses a kind of range hood, and the range hood includes：Fan assembly, the fan assembly include air box and the wind turbine that is set in the air box, and there is the air box air inlet and air outlet, the air outlet to be located on the side wall of the air box；The wind turbine includes spiral case and wind wheel, and the wind wheel is installed on the inlet scoop of the spiral case in the spiral case towards the air inlet, and the air outlet of the spiral case is towards the air outlet；The both ends of muffler, the muffler are respectively provided with air inlet and gas outlet, and the gas outlet is connected to the air inlet；The silencing cavity that the muffler has silencers channel and is connected to the silencers channel；The gas outlet is connected to the silencers channel and/or silencing cavity.Technical solution of the present invention reduces the noise of range hood.

Description

Range hood

Technical field

The present invention relates to kitchen ventilator technical field, more particularly to a kind of range hood.

Background technology

Flue gas collected by exhaust fume collecting hood is discharged to outside room by existing range hood under the action of wind turbine.Due to wind turbine Strong drawing and air-supply, a large amount of noise will be generated during the work time.In order to reduce noise, people are in fan assembly sum aggregate Muffling device is increased between petticoat pipe, still, since existing muffling device is ineffective so that user nevertheless suffers from powerful make an uproar The interference of sound is unfavorable for use of the user to range hood.

Invention content

The main object of the present invention is to provide a kind of range hood, it is intended to improve the muting function of range hood.

To achieve the above object, range hood proposed by the present invention, including：

Fan assembly, the fan assembly include air box and the wind turbine that is set in the air box, the air box With air inlet and air outlet, the air outlet is located on the side wall of the air box；

The wind turbine includes spiral case and wind wheel, and the wind wheel is installed on the inlet scoop of the spiral case in the spiral case towards institute State air inlet, the air outlet of the spiral case is towards the air outlet；

The both ends of muffler, the muffler are respectively provided with air inlet and gas outlet, the gas outlet and the air inlet Connection；The silencing cavity that the muffler has silencers channel and is connected to the silencers channel；The gas outlet and the noise reduction Channel and/or silencing cavity connection.

Preferably, the spiral case is in being laterally arranged, and the air outlet of the spiral case is connected to air outlet, the air draught of the spiral case Mouth is connected to the air inlet.

Preferably, the air box includes wall of computer case and the sealing plate of L-shaped setting, the wall of computer case and the sealing plate It is spliced to form the air box, the air inlet is opened on the sealing plate.

Preferably, the fan assembly further includes fixing bracket, and described support bracket fastened one end is fixed with the spiral case to be connected It connects, the other end is fixedly connected with the inner wall of air box.

Preferably, the side wall of the wind turbine upper box part forms installation base to its inner recess, and the fixing bracket is separate The plate face of described spiral case one end is bonded fixation with the installation base.

Preferably, the side wall of the wind turbine upper box part outwardly protrudes, and offers suspension mouth in the lower part of protrusion part, with For installing air box.

Preferably, it is provided with die mould on the side wall of the air box.

Preferably, the muffler includes shell and the hush pipe that is set in the shell, and the hush pipe is described in The length direction of shell is arranged；

The hush pipe has silencers channel, and the silencing cavity is formed between the hush pipe and the shell.

Preferably, the both ends of the shell are formed with connection flanging, and the both ends of the hush pipe are formed with connection flange, institute Connection flanging and connection flange connection are stated, to be enclosed silencing cavity closed at both ends；Distinguish at the both ends of the hush pipe It is connected to the air inlet and the gas outlet.

Preferably, the range hood further includes blimp, and the blimp includes wind turbine adapter and noise reduction components, institute Stating wind turbine adapter, there is the wind passage being connected to the air inlet, noise reduction components to be set in the wind passage, with resistance Every the noise generated transmission of the wind turbine.

In technical solution of the present invention, under the fan action in air box, the exhaust fume collecting hood of range hood will be in cooking process The oil smoke of generation is bunched, and the air inlet through muffler enters in silencers channel and/or silencing cavity, then via gas outlet and into Air port enters cabinet and is then discharged out；In the process, wind turbine is working always, generate noise from air inlet, through gas outlet After enter in silencers channel and/or silencing cavity, be all finally two noise reductions no matter being introduced into silencers channel or silencing cavity Channel and silencing cavity are weakened and are consumed to noise simultaneously, pass through the setting of silencing cavity so that noise disappearing in muffler Consumption further strengthens so that the noise reduction of muffler is more obvious, effective, is conducive to significantly reduce range hood in work The noise discharged during work；Meanwhile by the way that by the air outlet setting of range hood, in side, then laterally setting is smoke exhaust pipe Can, smoke exhaust pipe one end is directly connect with air outlet, and the other end is connected to the smoke outlet on wall, and smoke exhaust pipe does not need bending and sets It sets, and need not also extend upward, therefore do not need reserved space between the top and ceiling of air box and come for smoke exhaust pipe court It is upper to be extended, therefore the whole height of air box can be oppositely arranged higher so that the separate user of noise source (fan assembly), Meanwhile by the way that air outlet to be arranged to the side wall in air box so that wind turbine is prevented in horizontal, that is, allow spiral case as far as possible Close to the top of air box, so that noise source is further away from user, while the length of muffler can be increased, and make Obtain the erasure effect of muffler more preferably.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of one embodiment of range hood of the present invention；

Fig. 2 is the configuration schematic diagram of mono- embodiments of Fig. 1；

Fig. 3 is the internal structure schematic diagram of mono- embodiments of Fig. 1；

Fig. 4 is the structural schematic diagram of the air box of range hood of the present invention；

Fig. 5 is the internal structure schematic diagram of the fan assembly of range hood of the present invention；

Fig. 6 is the partial enlarged view at A in Fig. 5；

Fig. 7 is the partial enlarged view at B in Fig. 5；

Fig. 8 is the structural schematic diagram of one embodiment of blimp in Fig. 2；

Fig. 9 is the internal structure schematic diagram of Fig. 8；

Figure 10 is the structural schematic diagram of one embodiment of adapter assembly in Fig. 2；

Figure 11 is the internal structure schematic diagram of Figure 10；

Figure 12 is the configuration schematic diagram of Figure 10；

Figure 13 is fan assembly in Fig. 2 and the structural schematic diagram after adapter assembly cooperation；

Figure 14 is the partial enlarged view at C in Figure 13；

Figure 15 is the partial enlarged view at D in Figure 13；

Figure 16 is the structural schematic diagram of muffler in Fig. 2；

Figure 17 is the internal structure schematic diagram of Figure 16.

Drawing reference numeral explanation：

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should When particular pose changes, then directionality instruction also correspondingly changes correspondingly.

In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result, Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model Within enclosing.

Referring to figs. 1 to Fig. 3, the range hood that the application proposes includes mainly the exhaust fume collecting hood close to user, is set far from user The fan assembly set, the muffler 500 being set between fan assembly and exhaust fume collecting hood, and it is set to muffler 500 and wind turbine Adapter assembly 900 between component；Under the fan action of fan assembly, oil smoke collection that exhaust fume collecting hood will generate in cooking process Hold together, and entered in silencers channel 533 through the air inlet of muffler 500 510, then enters air box 300 via adapter assembly 900 It is then discharged out.In above component, muffler 500 and adapter assembly 900 can not have in some embodiments, each component Setting and improvement have brings better effect to range hood.It, can be with such as by the way that silencing cavity 534 is arranged in muffler 500 Significantly reduce the propagation of noise；Pass through the setting of adapter assembly 900 so that range hood is adapted to more complicated operating mode (wall of user), to improve the adaptability of range hood；It can make noise source (wind turbine) by the improvement to fan assembly Farther away from user.

Below by the connection relation between the concrete structure and each component of each component of main description range hood, it is situated between successively Continue fan assembly, muffler 500, adapter assembly 900 and blimp 600.

Fan assembly, fan assembly include air box 300, spiral case 340, wind wheel and the connect cover 800 being set in cabinet Deng.Wherein, air box 300 has air inlet 310 and air outlet 320, and the position of air outlet 320 is provided with check-valves 360, when So in some embodiments, check-valves 360 can also be mounted on the smoke outlet on wall, and check-valves 360 leads to smoke exhaust pipe and outlet air Mouth 320 is connected to.Wind wheel is installed in spiral case 340, and spiral case 340 is mounted in air box 300, and spiral case 340 is arranged in connect cover 800 Between inlet scoop 341 and the air inlet 310 of air box 300.

The shape of air box 300, air box 300 is arranged in case shape, and air inlet 310 is opened in the bottom of air box 300, Air outlet 320 can be opened on side wall or top, for being opened in side wall.It is connected with smoke exhaust pipe at air outlet 320, Smoke exhaust pipe is laterally arranged, and the other end of smoke exhaust pipe is connected to the smoke outlet on wall, and the oil smoke that culinary art generates is discharged to It is outdoor.About the concrete composition of air box 300, air box 300 described in air box 300 includes wall of computer case 370 and L-shaped setting Plate 380 is sealed, the wall of computer case 370 and the sealing plate 380 are spliced to form the air box 300, and the air inlet 310 opens up In on the sealing plate 380.Air box 300 to be in hexahedron setting, one block of side plate of sealing plate 380 including air box 300 and Bottom plate；Wall of computer case 370 includes then three blocks of side plates and top plate.In two notches (plate 380 to be sealed is closed) side of wall of computer case 370 (bottom and side) has flange, and sealing plate 380 is covered on flange, and is fastenedly connected by screw, or passes through welding Mode connects.

By the way that air box 300 to be set as being spliced by wall of computer case 370 and sealing plate 380, compared to air box 300 by one Entire plate folding is formed and is spliced by six blocks of plates, all greatly reduces the difficulty of production and manufacture；In addition, due to sealing Plate 380 includes bottom plate, and bottom plate is provided separately with the side plate for opening up air outlet 320, i.e., air inlet 310 is opened on sealing plate 380, Air outlet 320 open up on wall of computer case 370 so that the processing of air inlet 310 and air outlet 320 is independent of each other, and the two can be same Shi Jiagong is conducive to the manufacture for improving air box 300 to effectively improve the shaping efficiency of air inlet 310 and air outlet 320 Efficiency.

It is provided with die mould on the side wall of air box so that there is convex rib structure on wall of computer case and sealing plate, effective While increasing the intensity of air box, the intrinsic frequency of air box is also effectively had adjusted.When air box is under the vibration of spiral case It when vibration, avoids the occurrence of the phenomenon that air box resonates with spiral case and occurs, to avoid the generation of big noise.

Fan assembly further includes the fixing bracket 390 for being fixed on spiral case 340 inside air box 300, the fixation One end of holder 390 is fixedly connected with the spiral case 340, and the other end is fixedly connected with the inner wall of air box 300.In the wind turbine The side wall on 300 top of case forms installation base 35 to its inner recess, and the fixing bracket 390 is far from 340 one end of the spiral case Plate face be bonded fixation with the installation base 35.390 L-shaped setting of fixing bracket, the top of one section of plate face and spiral case 340 Fitting is fixed, by welding or being connected by screw；Another section of plate face is bonded fixation with the protrusion part of installation base 35, By welding or being connected by screw.Certainly, in some embodiments, fixing bracket 390 U-shaped can also be arranged.Installation The quantity of boss 35 is two, is separately positioned on cabinet front and rear sides (by taking air outlet 320 is opened in left side or right side as an example) Top side wall, for mounted on the centre position of front and back side plate.

In order to improve the mounting stability of air box 300, the side wall on 300 top of the air box outwardly protrudes, and convex The lower part for going out part offers suspension mouth 330, for installation air box 300 (smoke machine is fixed in installation).Suspension mouth 330 is opened Mouth is downward, so that support element (body fixing bracket 390) is inserted, to support entire air box 300.Hang the number of mouth 330 Amount can be two, three, four or more, for six.Six suspension mouths 330, which are separately positioned on to remove, to be offered out On three side walls in air port 320, opened up on each side wall there are two, be positioned adjacent respectively to side plate junction setting.By setting Multiple suspension mouths 330 are set, can be used according to the specific room body layout scenarios of user to select suitably to hang mouth 330.

Spiral case 340 is arranged in cabinet, and spiral case 340 is in figure six setting, with inlet scoop 341 and air outlet 342, The air inlet 310 of inlet scoop 341 towards air box 300 is arranged, and the air outlet 320 of air outlet 342 towards air box 300 is arranged. Wind is discharged spiral case 340, forms negative pressure in spiral case 340 by wind wheel rotation in the spiral case 340, under the action of negative pressure, air-flow from Inlet scoop 341 enters spiral case 340.By the way that spiral case 340 is arranged such so that the shared thickness in the vertical direction of spiral case 340 It reduces, so that wind turbine (noise source) advantageously reduces noise farther away from user.It certainly, in some embodiments, can be with The wind turbine type used can have very much, for example, centrifugal blower, flow-mixing blower fan, axial flow blower etc..In the present embodiment, wind turbine is Centrifugal blower, wind wheel are centrifugal wind wheel, and oil smoke farther out, can be sent out farther position by the air supplying distance of centrifugal wind wheel, and be subtracted Small oil vapor backstreaming；Meanwhile the noise of centrifugal wind wheel is relatively low, therefore range hood can be avoided noise is excessive at work.Preferably, The axis of centrifugal wind wheel is longitudinally disposed, and the inlet side of such centrifugal wind wheel is downward.In order to make flue gas more smoothly from Silencers channel 533 enters spiral case 340, and the pivot center of the wind wheel extends along the length direction of the muffler 500.

It is worth noting that spiral case 340 can be with single admission, it can also both sides air inlet.When the both sides air inlet of spiral case 340 When, it can significantly increase the intake of spiral case 340, to improve the smoke exhaust efficiency of wind turbine.When 340 single admission of spiral case, snail The top of shell 340 can be as possible the top of past air box 300 lean on, it might even be possible to abutted with the top of air box 300, at this point, Spiral case 340 (noise source) can be as far as possible far from user so that noise is as far as possible far from user, to reach the mesh of noise reduction 's.When spiral case 340 up moves in air box 300, the space vacateed can be used for installing noise reduction part, such as blimp 600, the extended length etc. of muffler 500 is reduced into noise as far as possible in a limited space.

Connect cover 800, one end of the connect cover 800 are connect with the air inlet 310, the other end and the inlet scoop 341 connections.Pass through the setting of connect cover 800 so that the silencers channel 533 of muffler 500 directly connects with the air duct of spiral case 340 It is logical, avoid gap leakage of the flue gas between air inlet 310 and inlet scoop 341.By the setting to connect cover 800, ensure While the discharge that gaseous state oil smoke is not revealed, liquid oil smoke is avoided to be leaked out from air box 300.

In order to further prevent flue gas from revealing, the junction in connect cover 800 Yu inlet scoop 341 and connect cover 800 With the junction of air box 300, it is both provided with sealing structure.The connect cover 800 is in horn-like setting, the connect cover 800 Big opening end 820 be provided with the position seals of air inlet 310 with the bottom of the air box 300 and connect, the connect cover 800 The position seals that osculum end 810 offers inlet scoop 341 with the spiral case 340 are connect.

The sealed connection at connect cover 800 (osculum end 810) and spiral case 340：

The spiral case 340 on 341 periphery of the inlet scoop forms sealing flanging 343, the connect cover to 340 internal stretch of spiral case The lateral wall at 800 osculum end 810 is bonded fixation with the sealing flanging 343.The spiral case 340 for surrounding inlet scoop 341 prolongs upwards The sealing flanging 343 to form annular is stretched, sealing flanging 343 extends along the arc-shaped setting in direction.The osculum end of connect cover 800 810 lateral wall is adapted to the arc of sealing flanging 343, and the two fitting is fixed.

The oil smoke in spiral case 340 leaks in air box 300 in order to prevent, 340 upper edge inlet scoop 341 of the spiral case It circumferentially is formed with oil trap 344, the cell wall of the oil trap 344 extends to form the sealing flanging 343 to inlet scoop 341.Collection The U-shaped profile of oil groove 344 is arranged, opening upwards, is arranged towards wind wheel.

The sealed connection of 800 big opening end 820 of connect cover：

The big opening end 820 of connect cover 800 can be tightly connected with air box 300, can also be sealed with wind turbine adapter 700 Connection, or be tightly connected simultaneously with the two.Specifically, the bottom of the air box 300 is set along the circumferential direction of the air inlet 310 It is equipped with sealing flange, and/or, wind turbine adapter 700 is provided with the installation side radially extended close to one end of air inlet 310 710, sealing flange is formed on the installation side 710；The big opening end 820 of the connect cover 800, which is provided with, radially to be extended Installation folding 821, be bent to form seal groove 822 on the installation folding 821, the seal groove 822 is buckled in described close It seals on flange.Sealing flange can be formed on air box 300, can also be formed on wind turbine adapter 700, certainly, also may be used To be formed simultaneously in the two.

Certainly, in some embodiments, in the case where not considering connect cover 800, the bottom of air box 300 is folded upward at While forming sealing flange, the face towards muffler 500 then forms seal groove 311, the sealing flange of wind turbine adapter 700 720 are installed in seal groove 311, to form the sealed connection of wind turbine adapter 700 and air box 300.

The both ends of muffler 500, the muffler 500 are respectively provided with air inlet 510 and gas outlet 520, the gas outlet 520 are connected to the air inlet 310；The muffler 500 has silencers channel 533 and is connected to the silencers channel 533 Silencing cavity 534；The gas outlet 520 is connected to the silencers channel 533 and/or silencing cavity 534.

In the present embodiment, what silencers channel 533 and silencing cavity 534 were mutually isolated, only by one or more tiny Channel is connected to, and noise can be passed in silencing cavity 534 to consume from silencers channel 533, can also be to be passed to from silencing cavity 534 It to being consumed in silencers channel 533, needs according to practical situation, depending on the incoming mode and orientation of noise source.

By noise for silencers channel 533 is passed in silencing cavity 534, muffler 500 belongs to resonant muffler 500, when noise is passed to by tiny channel in silencing cavity 534 from silencers channel 533, due in air viscosity and hole Wall friction force effect converts part acoustic energy to thermal energy and dissipates；Noise transmits in silencing cavity 534, in transmittance process, sound The siding of wave effect silencing cavity 534 causes to vibrate；By taking micropore 532 as an example, micropore 532 is constituted with silencing cavity 534 in tiny channel Resonance sound-absorbing structure, each hole on chamber side wall forms corresponding Helmholtz resonator with space thereafter, in acoustic wave excitation With under reflection case, sound wave vibrates back and forth in silencing cavity 534, due to friction and windage in itself, converts acoustic energy to Mechanical energy is converted into thermal energy and consumes in turn, this structure reduces noise by mode of vibration.

Silencing cavity 534 and the position relationship of silencers channel 533 can have very much, and silencing cavity 534 can be in silencers channel 533 Side, can also surround silencers channel 533 be arranged.The cross-sectional shape of silencers channel 533 can have very much, such as round, side Shape, triangle etc..

In the present embodiment, under the fan action in air box 300, the exhaust fume collecting hood of range hood will generate in cooking process Oil smoke it is bunched, and entered in silencers channel 533 and/or silencing cavity 534 through the air inlet of muffler 500 510, then via going out Gas port 520 and air inlet 310 are then discharged out into cabinet；In the process, wind turbine is working always, generate noise from into Air port 310 is entered behind gas outlet 520 in silencers channel 533 and/or silencing cavity 534, no matter being introduced into silencers channel 533 Or in silencing cavity 534, all it is finally that two silencers channels 533 and silencing cavity 534 are weakened and consumed to noise simultaneously, leads to Cross the setting of silencing cavity 534 so that consumption of the noise in muffler 500 further strengthens so that the noise reduction of muffler 500 is imitated Fruit is more obvious, effective, is conducive to significantly reduce the noise that range hood is discharged during the work time.

In some embodiments, in order to further improve the noise reduction of muffler 500, the muffler 500 includes Shell 540 and the hush pipe 530 being set in the shell 540, length direction of the hush pipe 530 along the shell 540 Setting；The hush pipe 530 has silencers channel 533, and the noise reduction is formed between the hush pipe 530 and the shell 540 Chamber 534.Hush pipe 530 is cylindrical in shape setting, has the silencers channel 533 being arranged along its length.530 cross section of hush pipe Shape can have very much, such as round, rectangular etc..Shell 540 is cylindrical in shape setting, is provided with accommodating cavity along its length, disappears Sound cylinder 530 is mounted in accommodating cavity so that silencing cavity 534 is formed between the side wall and the side wall of shell 540 of hush pipe 530.This When silencing cavity 534 around silencers channel 533 be arranged so that the sound wave in silencers channel 533 can enter noise reduction from surrounding Chamber 534, so that the noise in silencers channel 533 can be significantly reduced.The sound wave of noise is entered from micropore 532 After silencing cavity 534, the ejection in silencing cavity 534 repeatedly, until energy is finally completely converted into thermal energy consumption.

Silencers channel 533 and the mode of communicating of silencing cavity 534 have very much, for being connected to by micropore 532, micropore 532 Shape can have very much, such as it is rectangular, oval, by taking circle as an example.Specifically, it is opened up on the side wall of the hush pipe 530 There are multiple micropores 532, to be connected to silencers channel 533 and silencing cavity 534.The both ends of hush pipe 530 respectively with the air inlet 510 It is connected to the gas outlet 520, noise at this time is passed to from silencers channel 533 in silencing cavity 534.The two of the shell 540 End is formed with connection flanging, and the both ends of the hush pipe 530 are formed with connection flange 531, the connection flanging and the connection Flange 531 connects, to be enclosed silencing cavity 534 closed at both ends.Connection flanging can to the internal stretch of accommodating cavity chamber, It can extend to the outside of silencing cavity 534, in order to reduce the volume of muffler 500, connection flanging is to accommodating cavity internal stretch.Even It connects flange 531 to the outside of silencers channel 533 to extend, overlaps and fix with connection flanging, thus by two end seals of silencing cavity 534 It closes.Connection flange 531 can be fastened with connection flanging by screw, can also be connected by welding.It is turned over by connection The setting on side 531 and connection flanging so that the both ends of silencing cavity 534 are sealed, to prevent noise from the both ends of silencing cavity 534 It overflows.

In order to further increase the noise reduction of muffler 500, the lateral wall of the hush pipe 530 and the shell 540 The distance between madial wall be 10~30mm.The aperture of the micropore 532 is 0.6~1mm；And/or the hush pipe 530 Wall thickness be 0.5~1mm.The gross area of multiple micropores 532 is equal to the 1%~5% of 530 lateral area of the hush pipe.Disappear Thickness (lateral wall of hush pipe 530 and the distance between the madial wall of shell 540), (wall thickness of hush pipe 530) of sound chamber 534 And the total area ratio of micropore 532, the noise reduction of equal influencer's muffler 500.Noise is certain caused by wind turbine Band limits and it is interior, to the noise of these frequency ranges, eliminated using corresponding parameter (structure feature), noise reduction can reach Most preferably, if area ratio shared by the thickness of silencing cavity 534, the aperture of micropore 532, the hole depth of micropore 532 and micropore 532, It is excessive or too small, all it is unfavorable for muffler 500 to eliminate the noise of sound wave frequency range caused by wind turbine.

Sound wave enters and springs into silencers channel 533 after silencing cavity 534 again in order to prevent, and the hole of the micropore 532 is without leave The silencers channel 533 is gradually reduced to the direction of the silencing cavity 534.Simultaneously as aperture is tapered so that micropore 532 has There are direct sound waves and enters silencing cavity 534.By by the hole of micropore 532 without leave silencers channel 533 to the side of silencing cavity 534 To being gradually reduced so that the sound wave of noise is easily accessible silencing cavity 534, is but difficult to propagate out from silencing cavity 534, more added with Conducive to the consumption of noise sound wave.

In order to further increase the noise reduction of muffler 500, silencing cotton is provided in the silencing cavity 534.By disappearing The setting of sound cotton, the sound wave entered in silencing cavity 534 will more quickly be converted thermal energy, to be conducive to subsequent sound wave It more smoothly enters in silencing cavity 534 and is converted, to be conducive to improve the noise reduction of muffler 500.

In order to further increase the noise reduction of muffler 500, the side wall of the hush pipe 530 includes inner panel and outside plate, The inner panel and the setting of outside plate interval, to form noise reduction gap between the inner panel and the outside plate.Inner panel and outside plate are fixed Connection so that the sound wave of partial noise consumes in noise reduction gap.On inner panel and outside plate, micropore 532 is offered so that sound When by noise reduction gap, acoustic wave segment is consumed wave, to improve muffler 500 to the consumption ability of sound wave and consumption speed Degree is conducive to the noise reduction for improving muffler 500.

The exhaust fume collecting hood of the range hood is arranged in the lower section of the muffler 500, and the silencers channel 533 disappears along described The length direction of sound cylinder 530 extends, and the exhaust fume collecting hood outlet flue 120 is connected to the silencers channel 533.

Adapter assembly 900, the adapter assembly 900 include connection smoke pipe 930, one end of the connection smoke pipe 930 and institute The connection of air inlet 310 is stated, the other end is connected to the silencers channel 533.The form of connection smoke pipe 930 can have very much, such as Plastic tube, metal tube for hard, or soft plastic tube and rubber tube etc., it is only necessary to which device can be connected to air box 300 and muffler 500.By taking the connection smoke pipe 930 includes the plastic tube of fold and/or the rubber tube of fold as an example.

In the installation process of fan assembly and muffler 500, fan assembly and muffler 500 are required for according to user room The actual conditions of body are installed, for example, air box 300 is installed preferably adjacent to the position of smoke outlet, and air box 300 needs to pacify On wall, and muffler 500 not only needs to be mounted on wall, while also needing to be coordinated with the exhaust fume collecting hood of lower section, So that the gas outlet 520 of muffler 500 is not conllinear with the axis of the air inlet 310 of air box 300；By the way that smoke pipe will be connected 930 one end is connected to silencers channel 533, and the other end is connected to air inlet 310 so that fan assembly and muffler 500 are being pacified Actual deviation can be compensated effectively caused by during dress, so that range hood is adapted to various working Installation in (room body situation), to be conducive to improve the adaptability of range hood.

In order to preferably be connected to the air inlet 310 of silencers channel 533 and air box 300, the connection smoke pipe 930 is soft Pipe, and/or, the connection smoke pipe 930 is scalable.It is set as hose and telescopic tube by the way that smoke pipe 930 will be connected so that inhaling In the installation process of kitchen ventilator, the relative position between air box 300 and muffler 500 can be adjusted flexibly, so that oil suction Smoke machine can preferably adapt to different installation environments, greatly improve the adaptability of range hood.

The connection type of air box 300 and muffler 500 has very much, specifically introduces pass through wind turbine adapter 700 below Connection is realized with adapter assembly 900.

Specifically, the fan assembly includes wind turbine adapter 700, and the wind turbine adapter 700 is set to the air inlet At mouth 310；The adapter assembly 900 includes fixed part 920 and the adapter 910 being connect with the fixed part 920, the fixation Portion 920 is connect with the muffler 500；One end of the connection smoke pipe 930 is connect with the adapter 910, the other end and institute The connection of wind turbine adapter 700 is stated, and/or, one end of the connection smoke pipe 930 is connect with the fixed part 920, the other end and institute State the connection of adapter 910.The position that i.e. connection smoke pipe 930 is arranged can there are many, can be arranged and turn in adapter 910 and wind turbine Between connector 700；It can also be arranged between fixed part 920 and adapter 910, at this point, adapter 910 can directly and wind turbine Adapter 700 connects, and can also connect that (i.e. two connect smoke pipes 930 and are separately positioned on wind turbine turn by another connection smoke pipe 930 Between connector 700 and adapter 910 and between fixed part 920 and adapter 910).By with wind turbine adapter 700 and turn The setting of fitting 910 so that the installation enhanced convenience of connection smoke pipe 930, quick；Similarly, pass through adapter 910 and fixed part 920 setting so that connect the easier for installation and quick of smoke pipe 930.About the fixation of connection smoke pipe 930, can pass through Screw is fastenedly connected, and can be connected by glue, and can also be arranged by the fastener of annular and connect smoke pipe 930 and consolidated It is fastenedly connected on fixed component.

Wherein, wind turbine adapter 700 includes installation in 710 and 710 interconnecting pieces connecting when with the installation；The connection Portion is detachably connected with the adapter 910, and the installation side 710 is fixedly connected with the bottom of the cabinet.Interconnecting piece is in cylinder Shape is arranged, and installation side 710 is located at one end of interconnecting piece, circumferentially extending of the installation side 710 along interconnecting piece.Installing side 710 can be with Interconnecting piece is detachably connected, and can also be integrally formed and is arranged with interconnecting piece.Install side 710 and air box 300 bottom, correspondence into The position fitting in air port 310 is fixed, so that the axis collinear of the axis of interconnecting piece and air inlet 310.Wherein, side 710 is installed It can be bonded fixation with the inner wall of air box 300, fixation can also be bonded with the outer wall of air box 300.

In order to improve the leakproofness between wind turbine adapter 700 and air box 300, the bottom of the air box 300 is along institute That states air inlet 310 is circumferentially provided with seal groove 311；Installation side 710 the radially extending along the air inlet 310, it is described Installation is formed with sealing flange 720 on side 710, and the sealing flange 720 is installed in the seal groove 311.Wherein, seal groove 311 are formed from the bottom of air box 300 to 300 sunken inside of air box, and mounting groove forms ring along the circumferentially extending of air inlet 310 Shape, circumferentially extending of the sealing flange 720 along installation side 710 form annular.When in the installation to seal groove 311 of sealing flange 720, Increase the sealing performance between wind turbine adapter 700 and air box 300.

In order to improve the leakproofness and connective stability between wind turbine adapter 700 and adapter 910, the adapter 910 there is the mounting groove opened up to the interconnecting piece, the interconnecting piece to be mounted in the mounting groove.Pass through installation The setting of slot so that the connection between interconnecting piece and adapter 910 is protected by mounting groove so that external environment because Element is difficult to influence the connection of the two, to be conducive to improve the stability of the two connection.

Connection type of the interconnecting piece in mounting groove has very much, is such as connected by a snap, and screw is fastenedly connected etc., with logical It crosses for threaded connection (while being conducive to improve sealing performance, easy for removal and installation), the mounting groove is arranged in a ring, There is internal thread on the madial wall of the interconnecting piece, and/or, there is external screw thread on the lateral wall of the interconnecting piece；The connection Portion and the side wall of the mounting groove are connected through a screw thread.That is, screw thread can be formed on the lateral wall of interconnecting piece, can also be formed In on the madial wall of interconnecting piece, in some embodiments, it might even be possible to be formed simultaneously on the lateral wall and madial wall of interconnecting piece.

In order to further improve the leakproofness between wind turbine adapter 700 and adapter 910, the inside of the interconnecting piece The sealed groove 917 that Open Side Down is formed on wall；The mounting groove, which is connected by internal ring wall with external annulus, to be enclosed, described interior Seal bead 915 is provided at the top of ring wall, the sealed groove 917 is buckled in the seal bead 915.The sealing is convex Muscle 915 and 917 tight fit of the sealed groove.

Oriented its is formed on the madial wall of interconnecting piece and extends internally flanging 915, and flanging 915 is enclosed with madial wall below Conjunction forms sealed groove 917, and the shape of sealed groove 917 can have very much, such as rectangle, trapezoidal.The inner ring of mounting groove It is provided with the seal bead 915 upwardly extended at the top of wall, the shape adaptation of the shape of seal bead 915 and close recessed sealing groove, and The height of sealed muscle is less than or equal to the groove depth of sealed groove 917, to ensure between seal bead 915 and sealed groove 917 Tight fit connection, to effectively ensureing leakproofness between the two.

The generation type of mounting groove has very much, and formation can be processed on one piece of thicker annular slab, can also be by two pieces Mutually independent annular slab socket cooperation and formed, certainly, in some embodiments, in addition to being spliced to form installation inside and outside above-mentioned Can also be left and right splicing and upper and lower splicing except slot.For the ease of the processing of mounting groove internal structure, mounting groove is with by interior Ring flat-plate 911 and outer ring plate 912 are arranged for being formed.

The adapter 910 includes inner ring plate 911 and outer ring plate 912, the madial wall of the outer ring plate 912 and/or described Snap fastener 913 is provided on the lateral wall of inner ring plate 911, the inner ring plate 911 and outer ring plate 912 pass through the snap fastener 913 Tight fit.The position that snap fastener 913 is formed can have very much, such as the lateral wall of inner ring plate 911, the madial wall of outer ring plate 912, or Person is arranged simultaneously.The quantity of snap fastener 913 is multiple, and the circumferential direction along inner ring plate 911 or outer ring plate 912 is uniformly distributed.

In order to improve the stability of the cooperation of snap fastener 913, when the snap fastener 913 is set to the outer of the inner ring plate 911 When sidewall bottom, the bottom of 912 madial wall of the outer ring plate is provided with backstop muscle 914, and the backstop muscle 914 is set to the card Link closely 913 underface.Backstop muscle 914 can only correspond to snap fastener 913 setting, can also along the circumferentially disposed of outer ring plate 912, To adapt to the cooperation position between a variety of inner ring plates 911 and outer ring plate 912, to be conducive to improve inner ring plate 911 and outer ring plate 912 installation effectiveness.

About the specific connection of connection smoke pipe 930, in order to improve the stability that connection smoke pipe 930 coordinates with fixed part 920 And leakproofness, the bottom of the connection smoke pipe 930 are radially formed with lateral flap 932, the fixed part 920 includes fixing Plate, the lateral flap 932 are bonded fixation with the fixed plate.There are many connection types of fixed plate and lateral flap 932, such as Screw connection snaps connection, by taking gluing connects as an example.By the way that fixed plate and lateral flap 932 are bonded so that connection smoke pipe Connection between 930 and fixed plate connects for face, is conducive to the stability for improving sealing performance and connection.

In order to improve the stability and leakproofness that coordinate between connection smoke pipe 930 and adapter 910 and muffler 500, institute There is connection flange 531, the fixed plate to be fixedly connected with the connection flange 531 at the top for stating muffler 500, the transverse direction Flanging 932 is between the connection flange 531 and the fixed plate.By the way that lateral flap 932 is located in connection flange 531 Between fixed plate so that the mounting stability of lateral flap 932 is increased dramatically.

In order to improve the leakproofness and connective stability between connection smoke pipe 930 and adapter 910, the connection smoke pipe 930 top has been axially formed vertical flanging 931, the inner ring plate 911 of the vertical flanging 931 and the adapter 910 along it Bottom connection.Vertical flanging 931 is bonded fixation with the side wall of 911 bottom of inner ring plate, inner ring plate 911 and vertical flanging 931 There are many connection types, such as screw connection, snaps connection, by taking gluing connects as an example.By by inner ring plate 911 and vertical flanging 931 fittings so that the connection between connection smoke pipe 930 and inner ring plate 911 connects for face, is conducive to improve sealing performance and connection Stability.

Blimp 600, the blimp 600 include wind turbine adapter 700 and noise reduction components 610, the wind turbine adapter 700 there is the wind passage 730 being connected to the air inlet 310, noise reduction components 610 to be set in the wind passage 730, with Obstruct the noise generated transmission of the wind turbine.

It is worth noting that the wind turbine adapter mentioned in wind turbine adapter 700 in the present embodiment and preceding embodiment 700 structure may be the same or different, i.e., the wind turbine adapter 700 in the present embodiment can not have signaling transfer point, only Noise reduction components 610 provide installation site.

Certainly, in some embodiments, in order to simplify the design of range hood, and it is more reasonably utilized space, it can To be installed on noise reduction components 610 in the wind turbine adapter 700 in above example, to form blimp 600.It is arranged such When, blimp 600 and the connection of cabinet and adapter assembly 900 are identical as above embodiment, and details are not described herein.

Under fan action in air box 300, the exhaust fume collecting hood of range hood is bunched by the oil smoke generated in cooking process, And it is then discharged out into cabinet through blimp 600 and air inlet 310；In the process, wind turbine is working always, and what is generated makes an uproar Sound is passed to from air inlet 310 in the wind passage 730 of wind turbine adapter 700, be just passed to after noise reduction components 610 every The component of the range hood of 600 lower section of sound cover；Pass through the setting of blimp 600, when noise passes through wind passage 730, noise It is largely consumed under the action of noise reduction components 610, being conducive to significantly reduces range hood is released during the work time The noise put；In addition, since blimp 600 is directly connect with air box 300 so that blimp 600 is unusual apart from noise source Closely, to which noise is weakened and be consumed in source, the diffusion and propagation of noise is effectively prevented, is further reduced The noise that range hood is discharged during the work time.

Lower mask body receives the structure of noise reduction components 610

The noise reduction components 610 include support frame 611 and the noise reduction piece 612 being set on the support frame 611, institute Support frame 611 is stated to connect with the wind turbine adapter 700.Support frame 611 and the madial wall of wind passage 730 are fixed and are connected It connects, the quantity of noise reduction piece 612 is multiple, and multiple noise reduction pieces 612 are arranged along the radial direction of support frame 611.Pass through noise reduction piece 612 setting, when spreading out of cabinet, noise is stopped noise by noise reduction piece 612, to reduce the noise propagated to user.

While in order to further increase soundproof effect, reduce the loss of wind energy, the blimp 600 have windward side with The opposite leeward side of the windward side, the leeward side are arranged towards the air box 300；The noise reduction piece 612 is along leeward side To the direction of windward side, extend from the middle part of wind passage 730 to side wall.It, can about the shape and arrangement mode of noise reduction piece 612 With by noise reduction thin slice being circumferentially arranged along wind passage 730 of polylith arc, between can having between adjacent arc noise reduction thin slice Gap, can also be very close to each other；Noise reduction piece 612 can also be arranged in a ring, and specifically, in a ring horn-like of noise reduction piece 612 is set It sets, the noise reduction piece 612 is arranged along the direction of leeward lateral windward side in flaring.It is arranged such so that upward from muffler 500 The air-flow of flowing can be smoothly directed into air box 300, and the noise spread out of out of air box 300, then by noise reduction Effectively blocking and the rebound of piece 612.

In order to increase the quantity and the gross area of setting noise reduction piece 612 in certain space, the noise reduction piece 612 is along described The length direction of wind passage 730 is in step arrangement.From windward side to the direction of leeward side, the radial dimension of noise reduction piece 612 by Cumulative to add, i.e. the diameter of top noise reduction piece 612 is more than the diameter of following noise reduction piece 612.So set, increasing noise reduction piece 612 While the gross area, the slot of a recess is formed in leeward side can be repelled and assemble when in noise transmission to slot, to It is consumed faster, is conducive to improve noise reduction.It is dropped to simplify the manufacturing process step of noise reduction components 610 and improve It makes an uproar the integral strength of part, the noise reduction piece 612 is integrally formed with the support frame 611 to be arranged.

In order to improve noise reduction, side of the support frame 611 towards the air inlet 310 has cancave cambered surface.Its In, the support frame 611 includes the more arc support plates being radially arranged along the wind passage 730, the more branch Axis of the interface point of blade close to the wind passage 730.When the sound wave of noise is transferred to cancave cambered surface, cancave cambered surface is by noise It rebounds and assembles so that generate interaction between sound wave and be rapidly converted into thermal energy, to reach noise reduction rapidly and efficiently Purpose.

In some embodiments, in order to further obstruct the noise discharged from muffler 500, while fume-exhausting is improved The aesthetics of machine entirety；The range hood further includes Decorative Cover 200, and the Decorative Cover 200 covers at the muffler 500 Outside, one end are connect with the bottom of the air box 300, and the other end is connect with the top of the exhaust fume collecting hood.

It is worth noting that the relationship between each air port of exhaust fume collecting hood, fan assembly and denoiser is as follows：The collection cigarette Cover 100 has smoke inlet 110 and outlet flue 120；The fan assembly is set to the top of the exhaust fume collecting hood 100, the wind turbine Component includes air box 300, and there is the air box 300 310 He of air inlet, air outlet 320, the air outlet 320 to be located at institute On the side wall for stating air box 300；The denoiser has the silencers channel 533 for being cylindrical in shape setting, the both ends tool of the denoiser There are the air inlet 510 being connected to the silencers channel 533 and gas outlet 520；The denoiser is set to 100 He of the exhaust fume collecting hood Between the air box 300, the air inlet 510 is connected to the outlet flue 120, the gas outlet 520 and the air inlet 310 connections

The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly In the scope of patent protection that other related technical areas are included in the present invention.

Claims (10)

1. a kind of range hood, which is characterized in that including：

Fan assembly, the fan assembly include air box and the wind turbine that is set in the air box, and the air box has Air inlet and air outlet, the air outlet are located on the side wall of the air box；

The wind turbine includes spiral case and wind wheel, the wind wheel be installed on the inlet scoop of the spiral case in the spiral case towards it is described into Air port, the air outlet of the spiral case is towards the air outlet；

The both ends of muffler, the muffler are respectively provided with air inlet and gas outlet, and the gas outlet is connected to the air inlet； The silencing cavity that the muffler has silencers channel and is connected to the silencers channel；The gas outlet and the silencers channel And/or silencing cavity connection.

2. range hood as described in claim 1, which is characterized in that the spiral case is in laterally setting, the air-supply of the spiral case Mouth is connected to air outlet, and the inlet scoop of the spiral case is connected to the air inlet.

3. range hood as described in claim 1, which is characterized in that the air box includes wall of computer case and L-shaped setting Plate is sealed, the wall of computer case and the sealing plate are spliced to form the air box, and the air inlet is opened on the sealing plate.

4. range hood as described in claim 1, which is characterized in that the fan assembly further includes fixing bracket, described solid One end of fixed rack is fixedly connected with the spiral case, and the other end is fixedly connected with the inner wall of air box.

5. range hood as claimed in claim 4, which is characterized in that the side wall of the wind turbine upper box part is to its inner recess shape At installation base, plate face of the fixing bracket far from described spiral case one end is bonded fixation with the installation base.

6. range hood as claimed in claim 4, which is characterized in that the side wall of the wind turbine upper box part outwardly protrudes, and The lower part of protrusion part offers suspension mouth, for installing air box.

7. range hood as described in claim 1, which is characterized in that be provided with die mould on the side wall of the air box.

8. range hood as claimed in any of claims 1 to 7 in one of claims, which is characterized in that the muffler include shell and The hush pipe being set in the shell, the hush pipe are arranged along the length direction of the shell；

The hush pipe has silencers channel, and the silencing cavity is formed between the hush pipe and the shell.

9. range hood as claimed in claim 8, which is characterized in that the both ends of the shell are formed with connection flanging, described The both ends of hush pipe are formed with connection flange, the connection flanging and connection flange connection, closed at both ends to be enclosed Silencing cavity；The both ends of the hush pipe are connected to the air inlet and the gas outlet respectively.

10. range hood as claimed in any of claims 1 to 7 in one of claims, which is characterized in that the range hood further include every Sound cover, the blimp include wind turbine adapter and noise reduction components, and the wind turbine adapter has to be connected to the air inlet Wind passage, noise reduction components are set in the wind passage, to obstruct the noise generated transmission of the wind turbine.