CN208237953U - Range hood - Google Patents

Abstract

The utility model discloses a kind of range hood, the range hood includes: fan assembly, the fan assembly includes air box and the blower that is set in the air box, and the air box has air inlet and air outlet, and the air outlet is located on the side wall of the air box；The blower includes spiral case and wind wheel, and the wind wheel is installed on the air inlet 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；Muffler, the both ends of the muffler are respectively provided with air inlet and air 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 solutions of the utility model reduce the noise of range hood.

Description

Range hood

Technical field

The utility model relates to kitchen ventilator technical field, in particular to a kind of range hood.

Background technique

Flue gas collected by exhaust fume collecting hood is discharged to outside room by existing range hood under the action of blower.Due to blower 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.

Utility model content

The main purpose of the utility model is to provide a kind of range hood, it is intended to improve the muting function of range hood.

To achieve the above object, the utility model proposes range hood, comprising:

Fan assembly, the fan assembly include air box and the blower 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 blower includes spiral case and wind wheel, and the wind wheel is installed on the air inlet 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；

Muffler, the both ends of the muffler are respectively provided with air inlet and air 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 connected in laterally setting, the air outlet of the spiral case with air outlet, the air draught of the spiral case Mouth is connected to the air inlet.

Preferably, the air box includes the sealing plate of wall of computer case and 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 fixed bracket, described support bracket fastened one end and the fixed company of the spiral case It connects, the other end is fixedly connected with the inner wall of air box.

Preferably, the side wall of the blower upper box part forms installation base to its inner recess, and the fixed 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 blower upper box part outwardly protrudes, and offers suspension mouth in the lower part of protrusion part, with For installing air box.

Preferably, die mould is provided 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 blower adapter and noise reduction components, institute Stating blower adapter has the wind passage being connected to the air inlet, and noise reduction components are set in the wind passage, with resistance Every the noise generated transmitting of the blower.

In technical solutions of the utility model, under the fan action in air box, the exhaust fume collecting hood of range hood will be cooked The oil smoke generated in journey is bunched, and the air inlet through muffler enters in silencers channel and/or silencing cavity, then via gas outlet Enter cabinet with air inlet to be then discharged out；In the process, blower is working always, generate noise from air inlet, through go out It is entered after port in silencers channel and/or silencing cavity, is all finally two no matter being introduced into silencers channel or silencing cavity Silencers channel and silencing cavity are weakened and are consumed to noise simultaneously, by the setting of silencing cavity, so that noise is in muffler Consumption further strengthen so that the noise reduction effect of muffler is more obvious, effective, be conducive to significantly reduce range hood The noise discharged during the work time；Meanwhile by being arranged the air outlet of range hood in side, then smoke exhaust pipe is laterally set It sets, 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 Setting, and also do not need to extend upward, therefore do not need reserved space between the top and ceiling of air box and come for smoke exhaust pipe It is extended upward, therefore the whole height of air box can be oppositely arranged higher, so that noise source (fan assembly) is far from use Family, meanwhile, by the way that air outlet to be arranged in the side wall of air box, so that blower is prevented in horizontal, that is, allow spiral case to the greatest extent can Can close air box top so that noise source is further away from user, while the available increasing of length of muffler Add, so that the erasure effect of muffler is more preferably.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of one embodiment of the utility model range hood；

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

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

Fig. 4 is the structural schematic diagram of the air box of the utility model range hood；

Fig. 5 is the schematic diagram of internal structure of the fan assembly of the utility model range hood；

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

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

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

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

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

Figure 11 is the schematic diagram of internal structure 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 in Figure 13 at C；

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

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

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

Drawing reference numeral explanation:

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as When the fruit 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 cannot understand For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ", The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model Protection scope within.

Referring to figs. 1 to Fig. 3, the range hood that the application proposes mainly includes 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 blower 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, which 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；By the setting of adapter assembly 900, so that range hood is adapted to more complicated operating condition (wall of user), to improve the adaptability of range hood；It can make noise source (blower) by the improvement to fan assembly Farther away from user.

Below by the connection relationship between the specific structure and each component of each component of main description range hood, successively it is situated between 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 also may be mounted at 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 air inlet 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 provided with the bottom of air box 300, Air outlet 320 can be provided on side wall or top, for being provided with 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 arranged in hexahedron, one block of side plate of sealing plate 380 including air box 300 and Bottom plate；Wall of computer case 370 then includes 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 pass 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 is opened up on wall of computer case 370, so that the processing of air inlet 310 and air outlet 320 is independent of each other, 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 When vibration, the phenomenon that air box resonates with spiral case appearance is avoided the occurrence of, to avoid the generation of big noise.

Fan assembly further includes the fixation bracket 390 for being fixed on spiral case 340 inside air box 300, the fixation One end of bracket 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 blower The side wall on 300 top of case forms installation base 35 to its inner recess, and the fixed bracket 390 is far from described 340 one end of spiral case Plate face be bonded fixation with the installation base 35.The fixed L-shaped setting of bracket 390, one section of plate face and the top of spiral case 340 Fitting is fixed, by welding or being connected by screw to；Another section of plate face is bonded fixation with the protrusion part of installation base 35, By welding or being connected by screw to.Certainly, in some embodiments, fixed 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 provided with left side or right side as an example) Top side wall, for being mounted on the middle 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 air box is outwardly protruded, and convex The lower part of part offers suspension mouth 330 out, for installing air box 300 (smoke machine is fixed in installation).Suspension mouth 330 is opened Mouth is downward, so that supporting element (the fixed bracket 390 of body) is inserted, to support entire air box 300.Hang the number of mouth 330 Amount can for two, three, four or more, for six.Six suspension mouths 330 are separately positioned on to remove and offer 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 selected suitably to hang the use of mouth 330 according to the specific room body layout scenarios of user.

Spiral case 340 is arranged in cabinet, and spiral case 340 is in figure six setting, with air inlet 341 and air outlet 342, The air inlet 310 of air inlet 341 towards air box 300 is arranged, and the air outlet 320 of air outlet 342 towards air box 300 is arranged. Wind wheel rotates in spiral case 340, by wind be discharged spiral case 340, form negative pressure in spiral case 340, under the action of negative pressure, air-flow from Air inlet 341 enters spiral case 340.By by spiral case 340 so set, making the shared thickness in the vertical direction of spiral case 340 It reduces, so that blower (noise source) advantageously reduces noise farther away from user.It certainly, in some embodiments, can be with The blower type used can have very much, for example, centrifugal blower, flow-mixing blower fan, axial flow blower etc..In the present embodiment, blower 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 lower, therefore can be avoided range hood 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 be with 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 blower.When 340 single admission of spiral case, snail The top of shell 340 can the top of past air box 300 as far as possible 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 to install noise reduction part, such as blimp 600, by the extended length etc. of muffler 500, in a limited space, noise is reduced as far as possible.

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

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

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

The spiral case 340 on 341 periphery of air inlet 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 air inlet 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.

It is leaked in air box 300 in the oil smoke in spiral case 340 in order to prevent, along air inlet 341 on the spiral case 340 It circumferentially is formed with oil trap 344, the cell wall of the oil trap 344 extends to form the sealing flanging 343 to air inlet 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 blower 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, blower 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 blower adapter 700, certainly, can also 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 blower adapter 700 720 are installed in seal groove 311, to form the sealed connection of blower adapter 700 Yu air box 300.

Muffler 500, the both ends of 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 connection, noise can be to be passed in silencing cavity 534 from silencers channel 533 and consume, and be also possible to be passed to from silencing cavity 534 It consumes, is needed according to practical situation into silencers channel 533, depending on the incoming mode and orientation of noise source.

By taking noise is passed in silencing cavity 534 from silencers channel 533 as an example, muffler 500 belongs to resonant muffler 500, when noise is passed in silencing cavity 534 from silencers channel 533 by tiny channel, due in air viscosity and hole The effect of wall friction power, can convert thermal energy for part sound and dissipate；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 and silencing cavity 534 are constituted in tiny channel Resonance sound-absorbing structure, each hole on chamber side wall forms corresponding Helmholtz resonator with space thereafter, in acoustic wave excitation Under reflection case, sound wave vibrates back and forth in silencing cavity 534, due to friction and windage in itself, can convert sound 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 positional relationship of silencers channel 533 can have very much, and silencing cavity 534 can be in silencers channel 533 Side, can also around 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 Port 520 and air inlet 310 are then discharged out into cabinet；In the process, blower 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 The setting of silencing cavity 534 is crossed, 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 effect 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, forms the noise reduction 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 forming silencing cavity 534 between the side wall of hush pipe 530 and the side wall of shell 540.This When silencing cavity 534 around silencers channel 533 be arranged, allow the sound wave in silencers channel 533 to 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, 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 in silencing cavity 534 from silencers channel 533.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 extend to the outside of silencers channel 533, 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 effect of muffler 500, the lateral wall of the hush pipe 530 and the shell 540 The distance between inner sidewall 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 hush pipe.Disappear Thickness (lateral wall of hush pipe 530 and the distance between the inner sidewall of shell 540), (wall thickness of hush pipe 530) of sound chamber 534 And the total area ratio of micropore 532, the noise reduction effect of equal influencer's muffler 500.Noise is certain caused by blower Band limits and it is interior, to the noise of these frequency ranges, eliminated using corresponding parameter (structure feature), noise reduction effect can achieve 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 too large or too small, it is unfavorable for muffler 500 all to eliminate the noise of sound wave frequency range caused by blower.

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, be 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 effect 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 effect of muffler 500.

In order to further increase the noise reduction effect 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 effect for improving muffler 500.

The lower section of the muffler 500 is arranged in the exhaust fume collecting hood of the range hood, 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 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 cooperated 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 The available effective compensation of actual deviation 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 flexibly be adjusted, 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 blower adapter 700 below Connection is realized with adapter assembly 900.

Specifically, the fan assembly includes blower adapter 700, and the blower adapter 700 is set to the air inlet At mouth 310；The adapter assembly 900 includes fixed part 920 and the adapter 910 connecting 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 blower 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.I.e. the position that is arranged of connection smoke pipe 930 can there are many, can be set and turn in adapter 910 and blower Between connector 700；Also it can be set between fixed part 920 and adapter 910, at this point, adapter 910 can directly and blower Adapter 700 connects, and can also connect that (i.e. two connection smoke pipes 930 are separately positioned on blower turn by another connection smoke pipe 930 Between connector 700 and adapter 910 and between fixed part 920 and adapter 910).By with blower 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 connection smoke pipe 930 is easier for installation and quick.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 be connect smoke pipe 930 and consolidated It is fastenedly connected on fixed component.

Wherein, blower 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 setting, installation side 710 are 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 in air port 310, which is bonded, to be 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 blower adapter 700 and air box 300, the bottom of the air box 300 is along institute The circumferential direction for stating air inlet 310 is 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 blower adapter 700 and air box 300.

In order to improve the leakproofness and connective stability between blower adapter 700 and adapter 910, the adapter 910 have the mounting groove opened up to the interconnecting piece, and the interconnecting piece is mounted in the mounting groove.Pass through installation The setting of slot so that protection of the connection by mounting groove between interconnecting piece and adapter 910 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 screw thread on the inner sidewall 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 inner sidewall of interconnecting piece, in some embodiments, it might even be possible to be formed simultaneously on the lateral wall and inner sidewall of interconnecting piece.

In order to further improve the leakproofness between blower 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 sealed groove.

The flanging 915 of its oriented internal stretch is formed on the inner sidewall of interconnecting piece, flanging 915 is enclosed with inner sidewall 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 sealing bar, less than or equal to the groove depth of sealed groove 917, to guarantee between seal bead 915 and sealed groove 917 Tight fit connection, to effectively guarantee 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 It 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 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 inner sidewall 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 inner sidewall of outer ring plate 912, or Person is arranged simultaneously.The quantity of snap fastener 913 be it is multiple, 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 inner sidewall of 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 the setting of snap fastener 913, can also be arranged along the circumferential direction 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 and fixed part 920 cooperate 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 to be bonded, so that connection smoke pipe Connection between 930 and fixed plate is face connection, is conducive to the stability for improving sealing performance and connection.

In order to improve the stability and leakproofness that cooperate between connection smoke pipe 930 and adapter 910 and muffler 500, institute The top for stating muffler 500 has connection flange 531, and the fixed plate is fixedly connected with the connection flange 531, 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 are conducive to improve sealing performance and connection so that the connection between connection smoke pipe 930 and inner ring plate 911 is face connection Stability.

Blimp 600, the blimp 600 include blower adapter 700 and noise reduction components 610, the blower adapter 700 have the wind passage 730 being connected to the air inlet 310, and noise reduction components 610 are set in the wind passage 730, with Obstruct the noise generated transmitting of the blower.

It is worth noting that the blower adapter mentioned in blower adapter 700 in the present embodiment and preceding embodiment 700 structure may be the same or different, i.e., the blower 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 blower adapter 700 in above example, to form blimp 600.It is arranged such When, the connection of blimp 600 and cabinet and adapter assembly 900 is identical as above embodiment, and details are not described herein.

Under the 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 through blimp 600 and air inlet 310 into cabinet；In the process, blower is working always, and what is generated makes an uproar Sound from the wind passage 730 that air inlet 310 is passed to blower 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, so that 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 blower adapter 700.Support frame 611 and the fixed company of the inner sidewall of wind passage 730 It connects, the quantity of noise reduction piece 612 is multiple, radial direction arrangement of multiple noise reduction pieces 612 along 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 muti-piece 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.So set, making 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 Piece 612 effectively stops and rebound.

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 greater than the diameter of following noise reduction piece 612.So set, increasing noise reduction piece 612 While the gross area, it can be repelled and assemble when in noise transmission to slot in the slot that leeward side forms a recess, thus It is consumed faster, is conducive to improve noise reduction effect.In order to simplify the manufacturing process step of noise reduction components 610 and improve drop 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 effect, the support frame 611 has cancave cambered surface towards the side of the air inlet 310.Its In, the support frame 611 includes the more arc support plates being arranged radially 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 generating interaction between sound wave and being 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 blower Component includes air box 300, and the air box 300 has 310 He of air inlet, air outlet 320, and the air outlet 320 is 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 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 above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (10)

1. a kind of range hood characterized by comprising

Fan assembly, the fan assembly include air box and the blower 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 blower includes spiral case and wind wheel, the wind wheel be installed on the air inlet 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；

Muffler, the both ends of the muffler are respectively provided with air inlet and air 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 air inlet 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 fixed 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 blower upper box part is to its inner recess shape At installation base, the fixed bracket is bonded fixation with the installation base far from the plate face of described spiral case one end.

6. range hood as claimed in claim 4, which is characterized in that the side wall of the blower 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 blower adapter and noise reduction components, and the blower 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 transmitting of the blower.