CN207230676U - A kind of near-suction type oil smoke suction machine - Google Patents

Abstract

The utility model discloses a kind of near-suction type oil smoke suction machine, including housing and blower fan system, the housing includes the panel inclined with horizontal direction positioned at front end, and opening is offered on the panel and becomes the air inlet of range hood, it is characterised in that：The blower fan system is ternary wind turbine, and the opening in the air inlet and/or panel of the ternary wind turbine is provided with strainer, and circular mesh is offered on the strainer.Mesh is designed as round hole, oil smoke is reduced and passes through noise caused by filter screen；By limiting the spacing between the arrangement mode of mesh and the size of mesh, mesh, the incoming air area of filter screen ensure that.

Description

A kind of near-suction type oil smoke suction machine

Technical field

Machine for kitchen use is the utility model is related to, especially a kind of near-suction type oil smoke suction machine.

Background technology

Range hood becomes one of machine for kitchen use equipment indispensable in Modern Family.Usual range hood includes top Suction and near-absorption type, wind pressure is remote using being vortexed for the range hood of near-absorption type, by the major part oil smoke nearer apart from hearth with arc Line form absorbs, and can reduce the harmful effect to health, and power source is nearer from hearth, will not substantially reduce power The suction effect in source.

A kind of draft range hood as disclosed in the Chinese patent of Application No. 201120392664.9, including it is provided with suction of leaning forward The housing of mouth, the tilted exhausting component for being provided with face oil suction mouth of its housing, was also tiltedly installed with oil suction mouth Component is filtered, filter assemblies include being detachably arranged at the filter screen on the outside of smoking port；And for example Application No. 201210410639.8 Chinese patent disclosed in a kind of negative pressure type kitchen ventilator adopt technical solution：Including scroll casing type assembling in smoke evacuation negative pressure wind On the outside of road, the positive pressure air outlet of the androgynous connection of scroll casing type wind turbine is connected into a fixed inclination with smoke evacuation negative pressure air passage upper end upwards, is made It forms the oil smoke outlet conduits that positive pressure air outlet is connected with negative pressure smoke duct, and smoke evacuation negative pressure air passage lower end is with collecting on cigarette housing Face connects, and smoke evacuation negative pressure air passage upper end forms oil smoke outlet conduits with positive pressure air outlet, and oil smoke strainer is installed on collection cigarette housing Outside.

The scheme of the prior art as described above, the mesh of strainer is strip, and oil smoke passes through noise caused by strainer It is larger；Further, since only one of strainer, filter effect is poor, can not filter grease completely before blower fan system is entered；And And since generally use is multi-wing centrifugal fan, and multi-wing centrifugal fan is placed in lower triangle, in order to ensure it is higher into Wind efficiency, blower fan system volume are larger.This arrangement of wind turbine, since impeller prewhirls gas effect and gas exists Flow into impeller and carry out that direction can be altered in steps in 90 ° of steering procedures, simple self-consistentency imports and exports angle for impeller Actual acting ability is unfavorable；In addition, wind turbine is remote apart from wind pipe distance, it is difficult to overcomes the resistance of ducting, wind turbine faces use directly Family, lacks noise reduction measure, and noise is higher.

Utility model content

Technical problem to be solved in the utility model is in view of the above-mentioned problems of the prior art, providing a kind of improve Smoke filtration efficiency, the near-suction type oil smoke suction machine for reducing noise.

Technical solution is used by the utility model solves above-mentioned technical problem：A kind of near-suction type oil smoke suction machine, including Housing and blower fan system, the housing include the panel inclined with horizontal direction positioned at front end, are offered on the panel It is open and becomes the air inlet of range hood, it is characterised in that：The blower fan system is ternary wind turbine, the ternary wind turbine into Opening at air port and/or on panel is provided with strainer, and circular mesh is offered on the strainer.

To strengthen filter effect, it is preferred that the strainer includes the first strainer of the opening being arranged on panel, and The second strainer of the air inlet of ternary wind turbine is arranged on, first strainer includes the first strainer body and gathers in the first filter The first mesh on net body, second strainer include the second strainer body and the second net to gather on the second strainer body Hole.

For ease of the dismounting of the first strainer, the bottom of the first strainer body is provided with the inserted sheet extended downwardly, and The top of one strainer body sets extension in oriented housing, hollow connecting pole, the panel positioned at opening lower edge Position offers the jack coordinated with inserted sheet, and the panel sets what is protruded outside oriented housing positioned at the position of open upper edge The positioning convex column coordinated with connecting pole, so that the first strainer and panel are detachably connected.

To ensure larger incoming air area, avoid greasy dirt from blocking mesh, while can guarantee that preferable filter effect again, each net The aperture in hole is identical, is 3mm~8mm, and the spacing between two neighboring mesh is 2~3 times of the aperture of mesh.

Efficient due to ternary wind turbine, noise is big, is provided with the housing for reducing making an uproar for ternary wind turbine generation The noise reduction module of sound, the noise reduction module include the multiple baffles for forming sound absorption back of the body chamber and the suction for being opened in sound absorption back of the body top of chamber Acoustic aperture.

Preferably, for ease of being arranged in housing, the cavity geometry of housing, the composition sound absorption back of the body of the noise reduction module are adapted to The baffle of chamber includes right baffle-plate, right shell body, front apron, rear baffle, bottom baffle and top baffle, and the top baffle is in front and rear direction On width be more than bottom baffle, the top baffle is gradually inclined upwardly from front to back, and sound-absorbing hole is offered on the top baffle.

In order to be played a role to the noise in wider frequency section, the sound absorption back of the body intracavitary is provided with intermediate bulkhead and separates Into the first chamber and second chamber positioned at arranged on left and right sides, first chamber partition plate is provided with the first chamber and by first Chamber is separated at least two first resonant cavities, is provided with second chamber partition plate in the second chamber and separates second chamber Into at least two second resonant cavities.

To increase the acoustic absorptivity of high-frequency noise, the cavity volume of first resonant cavity is less than the second resonant cavity.

To cause noise reduction module to reach the sound absorption frequency range limit, the sound-absorbing hole is including at least two first sound-absorbing hole and at least Two the second sound-absorbing hole, the aperture of second sound-absorbing hole are more than the first sound-absorbing hole.

To increase the acoustic absorptivity of low-frequency noise, the first acoustical cotton, institute have been attached on the baffle at the top of the noise reduction module State and offered on the first acoustical cotton and matched 3rd sound-absorbing hole of the second sound-absorbing hole.

One side according to the present utility model, the ternary wind turbine are in that the housing is obliquely arranged in horizontal direction In the cavity collectively formed with cabinet, the air inlet of the ternary wind turbine is corresponding with the opening on panel, the noise reduction module The lower section of ternary wind turbine and close or be close to ternary wind turbine is arranged on, the aperture of first sound-absorbing hole is 0.5mm~1mm.

Other side according to the present utility model, is provided with cabinet above the housing, and the ternary wind turbine is in and water Square to being obliquely arranged in cabinet, the aperture of first sound-absorbing hole is 0.8mm~3mm；Or the ternary wind turbine erects Directly it is arranged in the cabinet, the aperture of first sound-absorbing hole is 1mm~5mm；The noise reduction module is arranged on ternary wind The lower section of machine, positioned at the bottom of housing.

In order to which oil smoke is preferably inducted into ternary wind turbine, increase the centrifugation supercharging effect on front side of ternary wind wind turbine, drop Low pressure loss, wind deflector is provided with front side of the ternary wind turbine, and the wind deflector includes what is be adapted to the cavity in housing Main body, the periphery of the main body at least partly bend to the front side of housing and are formed and hold together smoke chamber, offered in the main body and three The air guide hole of the air inlet adaptation of first wind turbine.

To increase the effect of water conservancy diversion noise reduction, the bottom angled of the main body has extended to form forward downwards cover board, the lid Plate is close or is close to the top of noise reduction module.

Further to reduce noise on the noise transmission path of ternary wind turbine, the rear side of the main body of the wind deflector is located at Position below ternary wind turbine has attached the second acoustical cotton.

For cause in noise spectrum for human ear sensitivity part reduce, the ternary wind turbine be in horizontal direction obliquely Arrangement, the air inlet of the ternary wind turbine are provided with afflux circle, and the afflux circle includes outer ring and is arranged on outer ring towards three The inner ring of inner side in first wind turbine, the inner ring includes isolation face and the inner ring stationary plane positioned at isolation face outer circumferential, described Sound-absorption hole is densely covered with isolation face.

Compared with prior art, the utility model has the advantage of：Mesh is designed as round hole, oil smoke is reduced and passes through Noise caused by filter screen；By limiting the spacing between the arrangement mode of mesh and the size of mesh, mesh, ensure that The incoming air area of strainer；By using ternary wind turbine, blower fan structure is compact, and size is relatively small, and fan efficiency and wind pressure are high, production Raw suction gradient is big, can be so that smoking efficiency is significantly lifted；And the arrangement of ternary wind turbine can reduce the resistance of ducting, row Cigarette is more smooth；By setting noise reduction module, the full frequency band noise of high frequency, intermediate frequency and low frequency can be absorbed, avoids influencing fume-exhausting The normal use of machine.

Brief description of the drawings

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

Fig. 2 is the sectional view of the range hood of Fig. 1；

Fig. 3 is the decomposition texture schematic diagram of the range hood of Fig. 1；

Fig. 4 is the first strainer schematic diagram of the range hood of Fig. 1；

Fig. 5 is the second strainer schematic diagram of the range hood of Fig. 1；

Fig. 6 is the noise reduction module schematic diagram of the range hood of the utility model；

Fig. 7 is the decomposition texture schematic diagram of the noise reduction module of the range hood of the utility model；

Fig. 8 is the sectional view along A-A of the noise reduction module of Fig. 6；

Fig. 9 is the B-B direction sectional view of the noise reduction module of Fig. 6；

Figure 10 is the cross section view of the noise reduction module of Fig. 6

Figure 11 is the schematic diagram of second embodiment of the range hood of the utility model；

Figure 12 is the sectional view of the range hood of Figure 11；

Figure 13 is the decomposition texture schematic diagram of the range hood of Figure 11；

Figure 14 is the schematic diagram of the afflux circle of the ternary wind turbine of the range hood of embodiment two；

Figure 15 is the decomposition texture schematic diagram of the afflux circle of Figure 14；

Figure 16 is the sectional view of the 3rd embodiment of the range hood of the utility model；

Figure 17 is the sectional view of the range hood of Figure 16.

Embodiment

The utility model is described in further detail below in conjunction with attached drawing embodiment.

Referring to Fig. 1~Fig. 6, a kind of near-suction type oil smoke suction machine, including housing 1, for ease of describing, hereinafter, " preceding ", " rear ", "left", "right", " on ", " under " each mean user when using range hood, range hood relative to user side Position, and structure is not limited.

In the present embodiment, housing 1 includes the first side plate 11 positioned at arranged on left and right sides, the front end face of the first side plate 11 by Up to it is lower gradually tilt backwards (with horizontal direction tilt) so that towards the front side of user be inclined plane.Two the first side plates Top between 11 is provided with top plate 12, and the rear end between two the first side plates 11 is provided with back side panel 13.

Panel 14 is provided between two 11 front ends of the first side plate, panel 14 includes being located at inner panel 142, and is centered around 142 periphery of inner panel, the outer panels 143 for forming frame, opening 141 is offered on inner panel 142 with formed range hood into Air port, it is preferred that air inlet is located at 142 center of inner panel.Inner panel 142 relative to outer panels 143 towards 1 sunken inside of housing, And closing among the outer edge of inner panel 142 and the inward flange of outer panels 143, inner panel 142 and outer panels 143 are in flat Face.

14 front side top of panel is provided with gear smoke background 15, lower section and is provided with baffle 18, keeps off smoke background 15 and baffle 18 formed Overall and outer panels 143 shapes, size fit, and when range hood works, keep off between smoke background 15 and inner panel 142 Shape has a certain degree, and oil smoke from air inlet enters housing 1 after passing through from the interval between gear smoke background 15 and inner panel 142 It is interior.The inclination of panel 14 and gear smoke background 15 at an angle to the horizontal direction, baffle 18 can be flushed with outer panels 143, and And gear smoke background 15 is at least corresponding with part air inlet.Preferably, gear smoke background 15 is rotatablely connected with panel 14, can be with respect to panel 14 rotations, and baffle 18 is then connected fixation with panel 14.

When range hood works, gear smoke background 15 gradually leaves panel 14, rotation opens up, until keeping certain angle Thus open mode, oil smoke can enter in housing 1.When range hood is stopped, smoke background 15 moves down gear, rotate backward drawing It is back to close to inner panel 142, air inlet is closed by gear smoke background 15 at this time, and preferably, keeps off smoke background 15 and outer panels 143 are neat Heisei is integrated.

The gear smoke background 15 set by doing so, during opening, gear smoke background 15 can be flexible according to the size of 1 front angle of housing Translation and rotation recline, and it is more convenient more convenient that gear smoke background 15 is opened, and sealing effect is more preferable, holds together cigarette area bigger, oil smoke focusing energy Power is strong；During closing, strainer and wind turbine compared with greasy dirt can be hidden so that range hood seems neat and tidy, convenient cleaning, at the same time The taint of odour of oil smoke can be prevented again, improved significantly to air in kitchen environment.

It is provided with strainer in housing 1, strainer can set corresponding with the opening of housing 1 141, can also be arranged on wind turbine system The air inlet of system.The bottom of housing 1,13 bottom of back side panel and panel are connected with bottom plate 17 between 14 bottom.Above-mentioned first side Plate 11, top plate 12, back side panel 13, panel 14, gear smoke background 15 and bottom plate 17 collectively define the cavity in housing 1.

Blower fan system is arranged in housing 1, and in the present embodiment, blower fan system is ternary wind turbine 4, and ternary wind turbine 4 can be adopted With the prior art, such as the blower fan structure disclosed in the patent of the Application No. 201620102790.9 of the applicant, ternary wind The air outlet of machine 4 is provided with outlet housing 5, for by the oil smoke discharge that ternary wind turbine 4 is discharged to wind pipe.Ternary wind turbine 4 Air inlet 41 is corresponding with the opening 141 on inner panel 142 before, and in the chamber that housing 1 is obliquely placed in horizontal direction In vivo.

In the present embodiment, it is preferred that strainer includes being arranged on the first strainer 161 at the opening 141 of inner panel 142 With the second strainer 162 being arranged at the air inlet 41 of ternary wind turbine 4.

Wherein, the first strainer 161 and opening 141 can squarely, the first strainer 161 includes the first strainer body 1611 The first mesh 1612 with being opened on the first strainer body 1611, gathers on the first strainer body 1611, it is preferred that in battle array Column distribution.The bottom of first strainer body 1611 is provided with the inserted sheet 1613 extended downwardly, and the top of the first strainer body 1611 End sets extension in oriented housing 1, hollow connecting pole 1614, inner panel 142 positioned at the position of 141 lower edge of opening The jack 1422 coordinated with inserted sheet 1613 is offered, inner panel 142 sets oriented housing positioned at the position of 141 top edge of opening The positioning convex column 1423 coordinated with connecting pole 1614 of protrusion outside 1.Preferable above-mentioned inserted sheet 1613, jack 1422, connecting pole 1614 and positioning convex column 1423 respectively have spaced apart two.The part of the setting positioning convex column 1423 of inner panel 142 can 142 remainder of opposed inner faces plate therefore ensures that the first strainer 161 is installed in opening 141, and open to 1 sunken inside of housing 141 edges of mouth flush, i.e., are substantially flush with inner panel 142 into plane.

When needing to install the first strainer 161, first inserted sheet 1613 can be inserted into jack 1422, then, by connecting pole 1614 are fastened with positioning convex column 1423 backward, and (positioning convex column 1423 is snapped into connecting pole 1614, passes through both designs Size causes both to be fitted close and fix after fastening), thus complete the installation of the first strainer 161.Filtered when needing dismounting first First strainer, 161 top, when such as being cleaned, can first be pulled along so that connecting pole 1614 and positioning convex column by net 161 1423 depart from, and then, by inserted sheet 1613, the extraction out of jack 1422, thus completes the dismounting of the first strainer 161.

Second strainer 162 is rounded, and shape, size fit with the air inlet 41 of ternary wind turbine 4, the second strainer 162 wrap The second strainer body 1621 and the second mesh 1622 being opened on the second strainer body 1621 are included, is gathered in the second strainer body On 1621, it is preferred that in array distribution.Second strainer body 1621 can be connected with ternary wind turbine 4 by fasteners such as nuts.

In above-mentioned filter structure, the first mesh 1612 and the second mesh 1622 are round hole, this is because circular Hole is maximum for the operatic tunes trap volume of low-frequency noise, and oil smoke can be greatly reduced and pass through noise caused by strainer.Preferably, often The aperture of a mesh (the first mesh 1612 or the second mesh 1622) is identical, is 3mm~8mm, between two neighboring mesh between 2~3 times away from the distance between (two mesh center) for the aperture of mesh.The mesh being arranged so as to, can both ensure strainer Incoming air area, and can prevent greasy dirt block mesh.In addition, strainer can coordinate with following noise reduction modules, due to noise reduction mould Block can increase wide band sound absorption, therefore mesh can select above-mentioned aperture, and can take into account preferable filter effect and noise reduction. When ternary wind turbine 4 is run, oil smoke is contacted with strainer first before entering the negative pressuren zone formed in housing 1, thus the oil of bulky grain Fat is attracted on strainer, prevents bulky grain grease from entering ternary wind turbine 4.

Since the noise of ternary wind turbine 4 is larger, and noise frequency range is wide, in the cavity of housing 1, is preferably located at ternary wind turbine 4 lower section is provided with noise reduction module 7, and referring to Fig. 8~12, noise reduction module 7 includes right baffle-plate 711, right shell body 712, front apron 713rd, rear baffle 714, bottom baffle 715 and top baffle 716, width of the top baffle 716 in front and rear direction are more than bottom baffle 715, Front apron 713 from top to bottom gradually tilts backwards, and right baffle-plate 711 and right shell body 712 are in triangle substantially, thus above-mentioned each plate The sound absorption back of the body chamber collectively formed is in triangulo column (up big and down small) substantially.Top baffle 716 is gradually inclined upwardly from front to back, It is consistent with the incline direction of 4 bottom of ternary wind turbine, and preferably, top baffle 716 is close or is close to the bottom of ternary wind turbine 4.

Noise reduction module 7 further includes intermediate bulkhead 72, first chamber partition plate 73 and second chamber partition plate 74.Intermediate bulkhead 72 Sound absorption back of the body intracavitary is arranged on, and sound absorption back of the body chamber is divided into the first chamber 751 positioned at left side and the second chamber positioned at right side 752.Preferably, intermediate bulkhead 72 can be parallel with right baffle-plate 711 or right shell body 712, the first chamber that intermediate bulkhead 72 is separated into Room 751 and second chamber 752 are equal.

First chamber partition plate 73 is arranged in first chamber 751, including at least two, each first chamber partition plate 73 is on a left side Extend between baffle 711 and intermediate bulkhead 72, and each first chamber partition plate 73 from top baffle 716 from front to back diagonally downward Bent after extending certain distance towards rear baffle 714.One of first chamber partition plate 73 is located at another first chamber partition plate 73 lower section, thus, each baffle and first chamber partition plate 73 will from top to bottom be separated at least three first in first chamber 751 Resonant cavity 761.

Second chamber partition plate 74 is arranged in second chamber 752, including at least one, and second chamber partition plate 74 is at middle interval Extend between plate 72 and right shell body 712.One of second chamber partition plate 74 can be bent downward from top baffle 716 extend into it is several Section is parallel with front apron 713, rear baffle 714 and bottom baffle 715 respectively, and second chamber 752 thus is separated into two second and is total to Shake chamber 762, i.e., one second resonance between the second chamber partition plate 74, top baffle 716, intermediate bulkhead 72, right shell body 712 Chamber 762, remainder then form another the second resonant cavity 762.Another can also be set in another resonant cavity 762 Second chamber partition plate 74, in tabular, extends between intermediate bulkhead 72 and right shell body 712, thus second is total to this another The chamber 762 that shakes is divided into two.

At least two first sound-absorbing hole 771 and at least two second sound-absorbing hole 772 are offered on top baffle 716, first inhales 771 and second sound-absorbing hole 772 of acoustic aperture is distributed in the top of first chamber 751 and second chamber 752, it is preferred that the first sound absorption Hole 771 can be in array-like, be covered with the surface of top baffle 716, and 772 surface straggly for being arranged in top baffle 716 of the second sound-absorbing hole. First sound-absorbing hole 771 can be round hole, square hole, hex hole etc., its aperture is 0.5mm~1mm, this is because noise reduction Module 7 is close or is close to ternary wind turbine 4, causes the spacing between noise reduction module 7 and ternary wind turbine 4 minimum, noise frequency range pole Width, only reduces the diameter of the first sound-absorbing hole 771 within the above range, and noise reduction module 7 could be caused to reach sound absorption frequency range pole Limit.The aperture of second sound-absorbing hole 772 is more than the first sound-absorbing hole 771.

Top baffle 716 has attached the first acoustical cotton 781 above, is offered on the first acoustical cotton 781 and the second sound-absorbing hole 772 Matched 3rd sound-absorbing hole 773, so as to coordinate the acoustic absorptivity of increase low-frequency noise with sound absorption back of the body chamber.

Due on 4 lower section noise transmission path of ternary wind turbine, leftward position is mainly high-frequency noise, therefore above-mentioned first The cavity volume of resonant cavity 761 is less than the second resonant cavity 762, i.e. the first resonant cavity 761 can increase the sound absorption system to high-frequency noise Number, the second resonant cavity 762 is then semi-open space, increases the acoustic absorptivity to mid-frequency noise.This mazy resonant cavity Add the wide band sound absorption of acoustical cotton 78.

Alternatively, first chamber partition plate 73 and second chamber partition plate 74 can also be other shapes, as long as can separate Space in one chamber 751 and second chamber 752, each resonant cavity after segmentation can be cuboid, cylinder, cone, Irregular body etc..In addition, sound absorption back of the body intracavitary, the surface of each resonant cavity can also attach acoustical cotton.

In order to reduce absorbed noise frequency, micro-pore diameter is reduced, increases the spacing between adjacent cells, increase resonance The height of chamber, the largest interval between each sound-absorbing hole preferably should be 1/5th of corresponding wave length of sound, preferably 8~ 50mm, largest interval 70mm, the highly preferred of each resonant cavity should be 1/3rd of corresponding wave length of sound.

By above-mentioned arrangement, ternary wind turbine 4 has very well close to noise reduction module 7 for 4 radiated noise of ternary wind turbine Inhibitory action, it is and compact-sized.And the structure of noise reduction module 7, sound absorption frequency range greatly improved, can effectively absorb each frequency range Noise.

Embodiment two

Referring to Figure 13~Figure 15, in the present embodiment, it is with the difference of above-described embodiment one, cabinet 2 includes four A second side plate 21, so as to surround the body structure that cross section is square or rectangular, the bottom opening of cabinet 2, so that oily After cigarette enters in the cavity in housing 1, it can enter in cabinet 2.

The air inlet 41 of ternary wind turbine 4 is in obliquely to be placed in cabinet 2 with horizontal direction before.Ternary wind turbine 4 Air inlet 41 at be provided with afflux circle 42.Ternary wind turbine 4 so above puies forward arrangement, realize directly inhale it is in line, negative pressuren zone concentrate, have Help reduce the resistance of ducting, smoke evacuation is more smooth.

Since ternary wind turbine 4 is obliquely arranged in cabinet 2, do not block, therefore, the low frequency that ternary wind turbine 4 produces is made an uproar Sound is easier outwards to propagate.For this reason, afflux circle 42 is preferable, using the Application No. 201210230512.8 such as the application Form disclosed in patent, referring to Figure 16 and Figure 17, including outer ring 421 and inner ring 422, inner ring 422 is located at 421 direction of outer ring Inner side in ternary wind turbine 4, outer ring 421 include the wind-guiding face 4211 to be extended internally by air inlet 41 and positioned at wind-guiding faces 4211 outer circumferentials are used for fixed outer ring stationary plane 4212, and inner ring 422 includes being used to block with what wind-guiding face 4211 coordinated The isolation face 4221 of turbulent area and the inner ring stationary plane 4222 for being used for fixation positioned at isolation 4221 outer circumferential of face.Inner ring 422 Densely covered sound-absorption hole 4223 on isolation face 4221.When the noise air-flow that ternary wind turbine 4 produces passes through sound-absorption hole 4223, pneumatic noise Can be to high-frequency mobile so that reduce the part in noise spectrum for human ear sensitivity.Can be between outer ring 421 and inner ring 422 Acoustical cotton is set.

In order to enable oil smoke can preferably be directed into ternary wind turbine, wind-guiding is provided between ternary wind turbine 4 and panel 14 Plate 6, wind deflector 6 include main body 61 and the top wind deflector 63 positioned at the top of main body 61.Wherein, main body 61 is plate-like, incline direction Consistent with ternary wind turbine 4, main body 61 is placed in housing 1 and cabinet 2, and air guide hole 611 is offered in main body 61, air guide hole 611 Shape, size are adapted to the air inlet of ternary wind turbine 4；Push up second side of the wind deflector 62 by the top of main body 61 towards the front side of cabinet 2 21 direction of plate bends and is formed, and is connected fixation with the second side plate 21.Wind deflector 6 further include bottom angled from main body 61 to Under the cover board 64 that extends forward, cover board 64 extends close to panel 14.Thus, structure as wind deflector 6, forms cigarette Chamber, the oil smoke that diffusion in housing 1 is entered from panel 14 can be guided to ternary wind turbine 4, improve smoking efficiency.Wind deflector 6 increases The centrifugation supercharging effect of the front side of ternary wind turbine 4, reduces the pressure loss.

The top baffle 716 of noise reduction module 7 is gradually inclined upwardly from front to back, the inclination with ternary wind turbine 4 bottom, cover board 64 Direction is consistent, and preferably, top baffle 716 is close or is close to the cover board 64 of wind deflector 6, thus increases the work of water conservancy diversion noise reduction With.

In addition, this arrangement of ternary wind turbine 4, rotating speed is small, and negative pressuren zone is concentrated, and low-frequency noise is big, it is desirable to the sound absorption back of the body Chamber it is highly preferred, be 8mm~20mm.

A diameter of 0.8mm~3mm of the first sound-absorbing hole 771 offered on top baffle 716, this is because noise reduction module 7 Close or be close to have certain spacing between cover board 64, with ternary wind turbine 4, noise frequency range is wider, only by the first sound-absorbing hole 771 diameter reduces within the above range, and noise reduction module 7 could be caused to reach band limit.

Top baffle 716, the first acoustical cotton 781 and cover board 64 can be close to mutually.The rear side of the main body 61 of wind deflector 6 is located at three The position of first lower section of wind turbine 4 can attach the second acoustical cotton 782, further be reduced on the noise transmission path of ternary wind turbine 4 Noise.

Embodiment three

Referring to Figure 16 and Figure 17, in the present embodiment, it is with the difference of above-described embodiment two, ternary wind turbine 4 Air inlet 41 is vertically placed in cabinet 2 before.The arrangement of this wind turbine, low-frequency noise are blocked, therefore nothing Sound-absorption hole 4223 need to be opened up on afflux circle 42 and carrys out conversion noise frequency.In addition, the ternary wind turbine 4 arranged vertically, its diameter are big Tilting ternary wind turbine 4 in embodiment two, to make up the flow losses of air-flow steering, it is preferred that ternary wind turbine 4 at this time A diameter of 220mm~300mm.

Main body 61 bends certain distance rear-inclined in 1 inside points of housing and bends downward to form bending part 612 backward, above-mentioned master The bending part 612 of body 61 is located at the lower section of ternary wind turbine 4；Wind deflector 6 is further included by the bottom angled of the bending part 612 of main body 61 The cover board 64 extended forward downwards, cover board 64 extend close to panel 14.

In addition, this arrangement of ternary wind turbine 4, rotating speed is high, and high-frequency noise is big, it is desirable to which the height of sound absorption back of the body chamber is more Greatly, it is preferred that be 15mm~28mm.

Since noise reduction module 7 is more away from ternary wind turbine, the first sound-absorbing hole 771 offered on top baffle 716 A diameter of 0.8mm~3mm, only the diameter of the first sound-absorbing hole 771 is reduced within the above range, could cause noise reduction module 7 reach band limit.

The position that the rear side of the bending part 612 of the main body 61 of wind deflector 6 is located at the lower section of ternary wind turbine 4 can attach the second suction Sound cotton 782, further reduces noise on the noise transmission path of ternary wind turbine 4.Above-mentioned wind deflector 6 can be used for implementing In example one.

Claims (16)

1. a kind of near-suction type oil smoke suction machine, including housing (1) and blower fan system, the housing (1) includes positioned at front end and water Square to inclined panel (14), offer opening (141) on the panel (14) and as the air inlet of range hood, its It is characterized in that：The blower fan system is ternary wind turbine (4), air inlet (41) place of the ternary wind turbine (4) and/or panel (14) On opening (141) place be provided with strainer, circular mesh is offered on the strainer.

2. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：The strainer includes being arranged on panel (14) On opening (141) place the first strainer (161), and be arranged on second strainer at air inlet (41) place of ternary wind turbine (4) (162), first strainer (161) include the first strainer body (1611) and gather on the first strainer body (1611) the One mesh (1612), second strainer (162) include the second strainer body (1621) and gather in the second strainer body (1621) the second mesh (1622) on.

3. near-suction type oil smoke suction machine according to claim 2, it is characterised in that：The bottom of the first strainer body (1611) End is provided with the inserted sheet (1613) extended downwardly, and the top of the first strainer body (1611) sets extension in oriented housing (1) , hollow connecting pole (1614), the panel (14) offered positioned at the position of opening (141) lower edge and inserted sheet (1613) jack (1422) coordinated, the panel (14) set oriented housing (1) positioned at the position of opening (141) top edge The positioning convex column (1423) coordinated with connecting pole (1614) of outer protrusion, so that the first strainer (161) and panel (14) can Dismantling connection.

4. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：The aperture of each mesh is identical, for 3mm~ 8mm, spacing between two neighboring mesh are 2~3 times of the aperture of mesh.

5. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：It is provided with the housing (1) for dropping The noise reduction module (7) for the noise that low ternary wind turbine (4) produces, the noise reduction module (7) include forming multiple gears of sound absorption back of the body chamber Plate and the sound-absorbing hole for being opened in sound absorption back of the body top of chamber.

6. near-suction type oil smoke suction machine according to claim 5, it is characterised in that：The composition sound absorption of the noise reduction module (7) Carrying on the back the baffle of chamber includes right baffle-plate (711), right shell body (712), front apron (713), rear baffle (714), bottom baffle (715) and top Baffle (716), width of the top baffle (716) in front and rear direction are more than bottom baffle (715), the top baffle (716) by Front to back is gradually inclined upwardly, and sound-absorbing hole is offered on the top baffle (716).

7. near-suction type oil smoke suction machine according to claim 6, it is characterised in that：The sound absorption back of the body intracavitary is provided with middle interval Plate (72) and be separated into the first chamber (751) and second chamber (752) positioned at arranged on left and right sides, in the first chamber (751) It is provided with first chamber partition plate (73) and first chamber (751) is separated at least two first resonant cavities (761), described second It is provided with second chamber partition plate (74) in chamber (752) and second chamber (752) is separated at least two second resonant cavities (762)。

8. near-suction type oil smoke suction machine according to claim 7, it is characterised in that：The cavity of first resonant cavity (761) Volume is less than the second resonant cavity (762).

9. near-suction type oil smoke suction machine according to claim 5, it is characterised in that：The sound-absorbing hole includes at least two first Sound-absorbing hole (771) and at least two second sound-absorbing hole (772), the aperture of second sound-absorbing hole (772) are more than the first sound-absorbing hole (771)。

10. near-suction type oil smoke suction machine according to claim 9, it is characterised in that：Baffle at the top of the noise reduction module (7) On attached the first acoustical cotton (781), offered on first acoustical cotton (781) and the second sound-absorbing hole (772) matched Three sound-absorbing hole (773).

11. near-suction type oil smoke suction machine according to claim 9, it is characterised in that：The ternary wind turbine (4) be in and level side To being obliquely arranged in the housing (1), air inlet (41) and the opening on panel (14) of the ternary wind turbine (4) (141) corresponding, the noise reduction module (7) is arranged on the lower section of ternary wind turbine (4) and close or be close to ternary wind turbine (4), institute The aperture for stating the first sound-absorbing hole (771) is 0.5mm~1mm.

12. near-suction type oil smoke suction machine according to claim 9, it is characterised in that：Cabinet is provided with above the housing (1) (2), the ternary wind turbine (4) is in obliquely to be arranged in horizontal direction in cabinet (2), the hole of first sound-absorbing hole (771) Footpath is 0.8mm~3mm；Or the ternary wind turbine (4) is vertically disposed in the cabinet (2), first sound-absorbing hole (771) aperture is 1mm~5mm；The noise reduction module (7) is arranged on the lower section of ternary wind turbine (4), positioned at the bottom of housing (1) Portion.

13. near-suction type oil smoke suction machine according to claim 12, it is characterised in that：Set on front side of the ternary wind turbine (4) Wind deflector (6) is equipped with, the wind deflector (6) includes the main body (61) being adapted to the cavity in housing (1), the main body (61) At least partly lateral bending is rolled over and is formed and hold together smoke chamber forward on periphery, and the air inlet with ternary wind turbine (4) is offered on the main body (61) (41) air guide hole (611) of adaptation.

14. near-suction type oil smoke suction machine according to claim 13, it is characterised in that：The bottom angled of the main body (61) to Under extended to form cover board (64) forward, the cover board (64) is close or is close to the top of noise reduction module (7).

15. near-suction type oil smoke suction machine according to claim 13, it is characterised in that：The main body (61) of the wind deflector (6) The position that is located at below ternary wind turbine (4) of rear side attached the second acoustical cotton (782).

16. near-suction type oil smoke suction machine according to claim 12, it is characterised in that：The ternary wind turbine (4) be in and level Direction obliquely arranges that air inlet (41) place of the ternary wind turbine (4) is provided with afflux circle (42), afflux circle (42) bag Include outer ring (421) and be arranged on inner ring (422) of the outer ring (421) towards the inner side in ternary wind turbine (4), the inner ring (422) Including isolation face (4221) and the inner ring stationary plane (4222) positioned at isolation face (4221) outer circumferential, the isolation face (4221) On be densely covered with sound-absorption hole (4223).