CN207214201U - 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, cabinet and blower fan system above housing, the housing includes the panel inclined with horizontal direction positioned at front end, it is characterised in that：The blower fan system includes the first ternary blower fan and the second ternary blower fan being arranged in parallel, the blower fan system is arranged in cabinet, at least two smoke deflectors are provided with front side of the panel, the smoke deflector in the lateral direction side by side, compartment of terrain arrangement, gap between gap, adjacent smoke deflector between the smoke deflector and panel forms air intake passage, the relative panel of at least one of which energy of the smoke deflector stretches, so as to close air intake passage close to panel or open air intake passage away from panel.By set on front side of panel at least two side by side, spaced apart smoke deflector, can reduce turbulent flow and sinuous flow in air-flow to carrying out effective Ground Split rectification and guiding by the air-flow of outer rectifier, form smooth-going air-flow.

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

A kind of side-suction type range hood of high-efficiency environment friendly as disclosed in the Chinese patent of Application No. 201320064301.1, bag Include the deflector provided with air inlet and the blower fan system positioned at deflector rear, air inlet are connected with blower fan system, deflector Top is provided with top plate, and the gap formation smoke collecting chamber of a smoke barrier, deflector and smoke barrier, the top are provided with front of air inlet Plate is provided with collection cigarette groove, and collection cigarette groove includes the upper wall being connected with deflector and the smoke guide wall being connected with top plate, oil smoke pass through The upper edge of smoke barrier enters smoke collecting chamber with collecting the gap of cigarette groove.

The scheme of prior art as described above, negative pressuren zone is smaller, the negative pressure skewness of air intake surface, and oil smoke enters collection Turbulent flow and sinuous flow are easily caused after smoke chamber, influences fume-exhausting efficiency, and deflector is difficult to clean；Blower fan system generally use For multi-wing centrifugal fan, and multi-wing centrifugal fan is placed in lower triangle, in order to ensure higher air intake efficiency, blower fan system body Product is larger.And this arrangement of blower fan, due to impeller, to gas, the effect of prewhirling and gas enter in impeller is flowed into Direction can be altered in steps in 90 ° of steering procedures of row, simple self-consistentency imports and exports actual acting ability of the angle for impeller It is unfavorable；In addition, blower fan is remote apart from wind pipe distance, it is difficult to overcomes the resistance of ducting, blower fan faces user directly, lacks noise reduction and arranges Apply, 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 oil smoke Air-flow smooth-going, improve smoking efficiency and be easy to the near-suction type oil smoke suction machine of cleaning.

Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of near-suction type oil smoke suction machine, including Housing, cabinet and blower fan system above housing, the housing are included positioned at the inclined with horizontal direction of front end Panel, it is characterised in that：The blower fan system includes the first ternary blower fan and the second ternary blower fan being arranged in parallel, the blower fan System is arranged in cabinet, is provided with least two smoke deflectors on front side of the panel, the smoke deflector in the lateral direction side by side, Compartment of terrain arranges that the gap between the gap, adjacent smoke deflector between the smoke deflector and panel forms air intake passage, described to lead The relative panel of at least one of which energy of cigarette plate stretches, so as to close air intake passage close to panel or be opened away from panel Air intake passage.

To ensure effective cleaning by edge suction steam and smog so that the cleaning and its manufacture of range hood become Easily, the panel includes wainscot, and is centered around wainscot periphery, forms the outer panels of framework, is opened on the wainscot Provided with the opening with being connected in housing, the wainscot relative to outer panels towards housing sunken inside, when the smoke deflector is closed It is in flat plane with outer panels.

The problem of to improve oil smoke diffusion, it is preferred that the smoke deflector includes two energy leads with respect to panel stretches first The second smoke deflector that cigarette plate and relative panel are fixed, second smoke deflector is between two the first smoke deflectors.

Due to the efficiency high of ternary blower fan, noise is big, is provided with the housing and is made an uproar for reducing caused by blower fan system The noise reduction module of sound, the noise reduction module include the multiple baffle plates 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 plate 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 central dividing plate and separated Into the first chamber and second chamber positioned at arranged on left and right sides, first chamber dividing plate is provided with the first chamber and by first Chamber is separated at least two first resonant cavities, is provided with second chamber dividing 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, acoustical cotton, the suction have been attached on the baffle plate at the top of the noise reduction module The 3rd sound-absorbing hole matched with the second sound-absorbing hole is offered on sound cotton.

On the basis of Cabinet Size is not changed, to increase air quantity, the first ternary blower fan includes the first 3 d impeller With the first air inlet, the second ternary blower fan includes the second 3 d impeller and the second air inlet, on oil smoke flow path, institute State the second air inlet with the first air inlet position to be equal, first air inlet and the second air inlet are set up in parallel and difference Towards the arranged on left and right sides of cabinet.

Preferably, to reduce windage on the premise of Cabinet Size is not increased, smoke absorption effect, first ternary are improved First 3 d impeller of blower fan, the second 3 d impeller of the second ternary blower fan respectively from the horizontal by 60 °~90 °, and And two 3 d impellers tilt in the opposite direction.

According to one side of the present utility model, the first ternary blower fan also includes the first spiral case, first ternary Impeller is arranged in the first spiral case, and the second ternary blower fan also includes the second spiral case, and second 3 d impeller is arranged on In two spiral cases, first spiral case and the second spiral case interval, it is arranged side by side, first air inlet is formed in the first spiral case On, second air inlet is formed on the second spiral case, formed with the first oil smoke passage, first oil in first spiral case The top of cigarette channel forms the first air outlet, and second spiral case is interior formed with the second oil smoke passage, the second oil smoke passage Top formed the second air outlet.

According to other side of the present utility model, between the first 3 d impeller and the second 3 d impeller are in same spiral case Every, be arranged side by side, first air inlet corresponding with the first 3 d impeller, with the second corresponding air intake of the second 3 d impeller Mouth is respectively formed at the relative both sides of spiral case, is provided with installing plate between first 3 d impeller and the second 3 d impeller, institute The top that installing plate extends to spiral case is stated, is led to so as to which two independent the first oil smoke passages and the second oil smoke will be separated into spiral case Road, the top of the first oil smoke passage form the first air outlet, and the top of the second oil smoke passage forms the second air outlet.

For ease of driving two impellers, in addition to the drive being arranged between the first 3 d impeller and the second 3 d impeller simultaneously Dynamic motor, the motor have the double output shaft for being respectively used to drive the first 3 d impeller and the second 3 d impeller.

Gas accordingly to be exported to two ternary blower fans plays guide functions, is advantageous to exit gas and forms laminar flow, from And flow losses are greatly lowered, efficiency is improved, outlet housing, the outlet housing bag are provided with the air outlet of the blower fan system The cover body in hollow tube-shape is included, the cover body has relative, opening first end and the second end, the bore of the first end big Bore in the second end, it is characterised in that：Be provided with the first deflector and the second deflector in the cover body, each deflector from The first end of cover body extends to the second end, and the first diffusion runner, institute are formed between the madial wall of first deflector and cover body State and the second diffusion runner is formed between the second deflector and the madial wall of cover body, the first diffusion runner and the second diffusion runner Sectional area be gradually reduced respectively by first end to the second end of cover body, the first diffusion runner at the first end of cover body with First air outlet of the first ternary blower fan is corresponding, the second diffusion runner at the first end of cover body with the second ternary blower fan Second air outlet is corresponding.

Compared with prior art, the utility model has the advantage of：When range hood does not work, smoke deflector is closed can be with Hide the filter screen and blower fan system compared with greasy dirt so that range hood keeps neat and tidy；When range hood works, smoke deflector is beaten Drainage can be played a part of to the air of casing peripheral by opening, can be to carrying out effective Ground Split rectification by the air-flow of outer rectifier With guiding, the turbulent flow and sinuous flow in air-flow are reduced, forms smooth-going air-flow, can be compared with that is, add the collection cigarette area of housing Improve the smoke discharging effect of range hood well；Smoke deflector can be when range hood be in running order, with panel in flat Plane, it can be ensured that pass through effective cleaning of edge suction steam and smog so that the cleaning and its manufacture of range hood become Easily；By using two ternary blower fans, blower fan structure is compact, and size is relatively small, and fan efficiency and blast are high, caused negative Press gradient big, smoking efficiency can significantly be lifted；The blower fan overall volume formed after parallel connection is smaller, it is not necessary to changes cabinet original Some sizes, in the case where keeping higher blast, and can make it that air quantity is double, improves fume-exhausting efficiency；Two air inlet difference Towards arranged on left and right sides so that the negative pressure region area increase of two side peripheries, suitable for two kitchen ranges, reach the effect for not running cigarette, Noise transmission path reduces noise not towards user.

Brief description of the drawings

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

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

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

Fig. 4 is the noise reduction module schematic diagram of range hood of the present utility model；

Fig. 5 is the decomposition texture schematic diagram of the noise reduction module of range hood of the present utility model；

Fig. 6 is the A-A of Fig. 4 noise reduction module to sectional view；

Fig. 7 is the B-B direction sectional view of Fig. 4 noise reduction module；

Fig. 8 is the cross section view of Fig. 4 noise reduction module；

Fig. 9 is Fig. 1 blower fan system of range hood and the sectional view of outlet housing；

Figure 10 is the schematic diagram of the outlet housing of Fig. 1 range hood；

Figure 11 is the schematic diagram of second embodiment of blower fan system of range hood of the present utility model；

Figure 12 is Figure 11 blower fan system of range hood and the sectional view of outlet housing.

Embodiment

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

Embodiment one

Referring to Fig. 1~Fig. 3, a kind of near-suction type oil smoke suction machine, including housing 1 and the cabinet 2 above housing 1, for just In description, hereinafter, "front", "rear", "left", "right", " on ", " under " each mean that user when using range hood, inhales Lampblack absorber and is not limited structure relative to the orientation of user.

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 Gradually tilt backwards and (tilted with horizontal direction) under up to, so as to be inclined plane towards the front side of user.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 front ends of the first side plate 11, opening 141 is offered on panel 14, with connecting in housing 1 Logical, the front side of panel 14 is provided with least two smoke deflectors 15.In the present embodiment, smoke deflector 15 is three, and laterally (left Right direction) on side by side, compartment of terrain arrangement.The gap structure between gap, adjacent smoke deflector 15 between smoke deflector 15 and panel 14 Into air intake passage 151.Panel 14, smoke deflector 15 are inclined with horizontal direction, and incline direction is consistent.By so setting Smoke deflector 15, can to carrying out effective Ground Split rectification and guiding by the air-flow of outer rectifier, reduce turbulent flow in air-flow and Sinuous flow, form smooth-going air-flow；Do not interfere with each other between the diverse location of air intake passage 151, effectively prevent produced inside housing 1 it is disorderly Stream and sinuous flow；Spaced apart smoke deflector 15 effective to oil smoke can be split, rectification and guiding, oil smoke enter air intake passage 151 It is preceding also to be contacted with smoke deflector 15, condensation can be played a part of so that bulky grain grease is attached on smoke deflector 15, prevents big Grain grease enters in range hood.Smoke deflector 15 can be put down when range hood is in running order with panel 14 in flat Face, it can be ensured that pass through effective cleaning of edge suction steam and smog so that the cleaning and its manufacture of range hood become to hold Easily.

Panel 14 includes wainscot 142, and is centered around the periphery of wainscot 142, forms the outer panels 143 of framework, above-mentioned Opening 141 be opened on wainscot 142, it is preferred that opening 141 is located at the center of wainscot 142.Wainscot 142 is relative to outer Panel 143 is closed, inner face towards the sunken inside of housing 1 among the inward flange of the outward flange of wainscot 142 and outer panels 143 Plate 142 and outer panels 143 are in plane.Above-mentioned smoke deflector 15 and panel 14 be in flat plane, refer to smoke deflector 15 with outside Panel 143 is in flat plane.When oil smoke rises, shell is entered from the opening 141 on wainscot 142 by air intake passage 151 In the cavity of body 1.

Filter screen 16 is provided with the inside of housing 1, with 141 corresponding position of opening.Above-mentioned smoke deflector 15 can include activity The first smoke deflector 152 and the second fixed smoke deflector 153, can also be activity the first smoke deflector 152.In the present embodiment In, it is preferred that smoke deflector 15 is three, wherein, the first smoke deflector 152 for activity of the left and right sides, and two first are led cigarette It is the second fixed smoke deflector 153 between plate 152, difference in height, shape is formed between the first smoke deflector 152 and the second smoke deflector 153 Into the effect of the diffusion drainage device described in the Chinese patent such as the Application No. 201310627395.3 of the applicant, greatly Ground improves the problem of oil smoke diffusion.

First smoke deflector 152 is connected by expansion link 154 with wainscot 142, and the second smoke deflector 153 passes through mounting bracket 155 are connected with wainscot 142 or filter screen 16.The telescopic moving mode of expansion link 154 can use prior art, can be in housing The drive mechanisms such as electric pushrod are set to drive the action of expansion link 154 in 1.

The state opened for smoke deflector 15 shown in Fig. 1, when range hood does not work, smoke deflector 15 can be into housing 1 Direction movement is closed, and air intake passage 151 is closed, and covers the lower space of housing 1, hides filter screen 16 and wind compared with greasy dirt Machine system so that range hood keeps neat and tidy；When range hood works, smoke deflector 15 is beaten to the movement of 1 outer direction of housing Open, open air intake passage 151, drainage can be played a part of to the air on the periphery of housing 1, that is, adding the collection of housing 1 Cigarette area, it can preferably improve the smoke discharging effect of range hood.

The bottom of housing 1, bottom plate 17 is connected between the bottom of back side panel 13 and the bottom of panel 14.Above-mentioned first side plate 11, Top plate 12, back side panel 13, panel 14, smoke deflector 15 and bottom plate 17 collectively define the cavity in housing 1.

Cabinet 2 includes four the second side plates 21, so as to surround the body structure that cross section is square or rectangular, cabinet 2 bottom opening, after entering so as to oil smoke in the cavity in housing 1, it can enter in cabinet 2.Enclosed between each second side plate 21 Into cavity constitute the air channel 25 that fuel feeding cigarette passes through.

The lower section of bottom plate 17 of housing 1 is provided with lubricating cup 3.

In the present embodiment, blower fan system 4 is provided with cabinet 2, it is preferred that blower fan system 4 is ternary blower fan, ternary wind Machine can use prior art, as disclosed in Application No. 201310418009.X Chinese patent.Blower fan system 4 can be single Individual ternary blower fan, two ternary blower fans in parallel or two series connection ternary blower fans, due to ternary blower fan have it is compact-sized, The characteristics of size is relatively small, fan efficiency and blast are high, can caused by suction gradient it is big, can so that smoking efficiency significantly Lifting.The concrete structure of blower fan system 4 will be described in detail later.The top of cabinet 2 is provided with to be connected with the air outlet of blower fan system 4 The outlet housing 5 connect, so that by outlet housing 5, oil smoke are drained into common flue.

Because the noise of ternary blower fan is larger, and noise frequency range is wide, in the cavity of housing 1, is preferably located at blower fan system 4 Lower section be provided with noise reduction module 7, referring to Fig. 4~8, noise reduction module 7 include 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, front Plate 713 from top to bottom gradually tilts backwards, and right baffle-plate 711 and right shell body 712 are in triangle substantially, and thus above-mentioned each plate is common The sound absorption back of the body chamber of composition is in triangulo column (up big and down small) substantially.

Noise reduction module 7 also includes central dividing plate 72, first chamber dividing plate 73 and second chamber dividing plate 74.Central dividing plate 72 is set Put and carry on the back intracavitary in sound absorption, 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, central dividing plate 72 can be parallel with right baffle-plate 711 or right shell body 712, the first chamber that central dividing plate 72 is separated into Room 751 and second chamber 752 are equal.

First chamber dividing plate 73 is arranged in first chamber 751, including at least two, each first chamber dividing plate 73 is on a left side Extend between baffle plate 711 and central dividing plate 72, and each first chamber dividing 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 dividing plate 73 is located at another first chamber dividing plate 73 lower section, thus, each baffle plate and first chamber dividing plate 73 will from top to bottom be separated at least three first in first chamber 751 Resonant cavity 761.

Second chamber dividing plate 74 is arranged in second chamber 752, including at least one, and second chamber dividing plate 74 is at middle interval Extend between plate 72 and right shell body 712.One of second chamber dividing plate 74 can bend and extend into downwards several from top baffle 716 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., second resonant cavity between the second chamber dividing plate 74, top baffle 716, central dividing plate 72, right shell body 712 762, remainder then forms another the second resonant cavity 762.Can also set in another resonant cavity 762 another the Two compartment spacers 74, in tabular, extend between central dividing plate 72 and right shell body 712, thus by another second resonance Chamber 762 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 The sound-absorbing hole 772 of acoustic aperture 771 and second 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 circular port, square opening, hex hole etc., and its aperture is 1mm~5mm, and this is due to noise reduction module 7 and first have certain spacing between ternary blower fan 41, and noise frequency range is extremely wide, and only the diameter of the first sound-absorbing hole 771 contracts It is small within the above range, could cause noise reduction module 7 reach sound absorption the frequency range limit.The aperture of second sound-absorbing hole 772 is more than first Sound-absorbing hole 771.

Top baffle 716 has attached acoustical cotton 781 above, and the matched with the second sound-absorbing hole 772 is offered on acoustical cotton 781 Three 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 to below ternary blower fan on noise transmission path, 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 dividing plate 73 and second chamber dividing 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, there is good inhibiting effect for ternary blower fan radiated noise, and it is compact-sized. And the structure of noise reduction module 7, sound absorption frequency range greatly improved, can effectively absorb the noise of each frequency range.

At least one first oil dripping hole 7151 is offered on bottom baffle 715, the second oil dripping is offered on the bottom plate 17 of housing 1 Hole 171 (can be corresponding with the first oil dripping hole 7151, can not also correspond to), and the position of above-mentioned oil dripping hole and the position of lubricating cup 3 Put correspondingly.Even if thus there is the grease after separation to enter noise reduction module 7, it can also pass through the first oil dripping hole 7151 and the second oil dripping hole 171 are discharged to lubricating cup 3, in order to avoid influence the noise reduction of noise reduction module 7.

Referring to Fig. 9 and Figure 10, in the present embodiment, blower fan system 4 include two can independent operation the first ternary blower fan The ternary blower fan system 42 of system 41 and second, two ternary fan parallel-connections are set.By using 3 d impeller, compared to centrifugation wind Machine, flow efficiency can be significantly increased, improve air quantity.

First ternary blower fan system 41 includes the first spiral case 411 and the first 3 d impeller being arranged in the first spiral case 411 412, the second ternary blower fan system 42 includes the second spiral case 421 and the second 3 d impeller 422 being arranged in the second spiral case 421. First spiral case 411 and the second spiral case 421 side by side, compartment of terrain arrangement, formed with the first air inlet 413 on the first spiral case 411, second Formed with the second air inlet 423 on spiral case 421, the air inlet of two spiral cases away from each other, i.e. the air inlet of the first spiral case 411 313 form in the side away from the second spiral case 421, two back-to-back settings of spiral case so that two ternary blower fans in it is left and right side by side Arrangement, and the first air inlet 413 is towards the left side of cabinet 2, the second air inlet 423 towards the right side of cabinet 2.Oil smoke from collection cigarette Cover 1 enters fashionable, is entered respectively from arranged on left and right sides in blower fan system 4.The first oil smoke passage 441 is formed in first spiral case 411, The first air outlet 414 of top formation of first oil smoke passage 441, the second oil smoke passage 442 of interior formation of the second spiral case 421, second The top of oil smoke passage 442 forms the second air outlet 424, the first air outlet 414 and the second air outlet 424 side by side, compartment of terrain arrangement.

First 3 d impeller 412 and the second 3 d impeller 422 can use prior art, such as the Application No. of the applicant 201620102790.9 patent disclosed in structure.First 3 d impeller 412 and the second 3 d impeller 422 share same Motor 43, motor 43 are arranged between the first spiral case 411 and the second spiral case 421, and motor 43 has dual output Axle, the output shaft 431 thus extended to the left can be connected with the first 3 d impeller 412 and drive the first 3 d impeller 412 to operate, to The output shaft 431 of right extension can be connected with the second 3 d impeller 422 and drive the second 3 d impeller 422 to operate.Thus may be such that Two ternary blower fans have preferable synchronism, while and can saves the energy.

First 3 d impeller 412 and the second 3 d impeller 422 can be respectively from the horizontal by 60 °~90 °, two impellers (the first 3 d impeller 412 is tilted to the left, and the second 3 d impeller 422 is tilted to the right) is tilted in the opposite direction, it is possible thereby to Reduce windage, improve smoke absorption effect.The center of first 3 d impeller 412 and the entrance of air channel 25 of range hood keep certain Distance, the distance are 1~2 times of diameter of the first 3 d impeller 412, the center of the second 3 d impeller 422 and range hood The entrance of air channel 25 maintains a certain distance, and the distance is 1~2 times of the diameter of the second 3 d impeller 422, impeller central and air channel The distance of 25 entrances have to be larger than impeller diameter, and the rotary sieve 6 of such porch of air channel 25 can just play a role, but can not More than 2 times diameters, otherwise apart from negative pressure region away from too far away.

Above-mentioned two ternary blower fan, same structure, and this arrangement, blower fan system overall volume can be used It is smaller, 2 original size of cabinet can not changed, and can make it that air quantity is double in the case where keeping higher blast, improves and inhales Oil smoke efficiency.Two air inlets are respectively facing arranged on left and right sides so that the negative pressure region area increase of two side peripheries, suitable for two Individual kitchen range, reach the effect for not running cigarette；Noise transmission path makes towards arranged on left and right sides rather than direction in the prior art User, thus reduce noise.

The top of blower fan system 4 is provided with outlet housing 5, and the cover body 51 of outlet housing 5 covers the first ternary blower fan system 41 First air outlet 414 of the first spiral case 411, the second air outlet 424 of the second spiral case 421 of the second ternary blower fan system 42, simultaneously And connect.In the present embodiment, outlet housing 5 includes cover body 51, the deflector being arranged in cover body 51.Cover body 51 is in hollow Tubular, and relative first end 511 (lower end) and the second end 512 (upper end) opening, the bore of first end 511 are more than the second end 512 bore, that is, be open and be gradually reduced from close to the position of blower fan system 4 to away from the position of blower fan system 4, oil smoke air-flow from First end 511 is entered in cover body 51, and leaves cover body 51 into the external pipe being connected with outlet housing 5 from the second end 512.

Deflector includes the first deflector 521 and the second deflector 522, first end of first deflector 521 from cover body 51 511 extend to the second end 512, and the first deflector 521 at the first end 511 of cover body 51, with the first ternary blower fan system First edge 415 (first of the second air outlet 424 close to the second ternary blower fan system 42 at 41 the first air outlet 414 The right edge of air outlet) it is corresponding, the second deflector 522 at the first end 511 of cover body 51, with the second ternary blower fan system 42 The second air outlet 424 at close to the second edge 425 of the first air outlet 414 of the first ternary blower fan system 41, (second goes out The left side edge in air port) it is corresponding.Each deflector has the width extended in front and rear direction.First deflector 521 is by first 511 to the second ends 512 of end, it is increasingly towards the second deflector 522 (to the right) and tilts, the second deflector 522 is by first end 511 to the Two ends 512, be increasingly towards the first deflector 521 and tilt (to the left), i.e., each deflector deviate from the bottom of cover body 51 among position Put the position extension to the crown center of cover body 51.The top of first deflector 521 and the second deflector 522 is (close to cover body 51 Second end 512) interconnect, it is preferred that the junction of two deflectors is in rounding off, so as to guide air-flow smooth transition.

5211,5212 madial wall all the time with cover body 51 of front and rear sides side of first deflector 521 is connected, the second water conservancy diversion 5221,5222 madial wall all the time with cover body 51 of front and rear sides side of plate 522 is connected.Thus cover body 51 is divided into cover body 51 Between the first diffusion runner 531, the madial wall of cover body 51 and the second deflector 522 between madial wall and the first deflector 521 Second diffusion runner 532, the first diffusion runner 531 and the second diffusion runner 532 are independent mutually.First diffusion runner 531 is in cover It is corresponding with the first air outlet 414 of the first ternary blower fan system 41 at the first end 511 of body 51, that is, the first air outlet is completely covered 414, the second diffusion runner 532 is right with the second air outlet 424 of the second ternary blower fan system 42 at the first end 511 of cover body 51 Should, that is, the second air outlet 424 is completely covered.The sectional area of first diffusion runner 531 is gradual by the end of first end 511 to the second 512 Reducing, the end 512 of sectional area first end 511 to the second of the second diffusion runner 532 is gradually reduced, thus, the first diffusion runner 531 The muzzle velocity at top is more than the muzzle velocity of the bottom of the first diffusion runner 531, the muzzle velocity at the top of the second diffusion runner 532 More than the muzzle velocity of the bottom of the second diffusion runner 532.

By setting above-mentioned deflector so that connected with the first air outlet 414 of the first ternary blower fan system 41 The gas velocity of one diffusion runner 531, the second diffusion runner 42 connected with the second air outlet 424 of the second ternary blower fan system 42 Spend closer to each other.This guide functions of outlet housing 5 are advantageous to exit gas and form laminar flow, enter extension tube attached after forming laminar flow Road, the defects of external pipe is directly entered with turbulent condition after air-flow comes out from spiral case is avoided, it also avoid two ternary wind Strong friction and shock during the air outlet air-flow mixing of machine, so as to which flow losses be greatly lowered, improves efficiency.

Sound-absorbing hole 54 is densely covered with first deflector 521 and/or the second deflector 522, advantageously reduces outlet noise.For Noise is further reduced, space that can also be between the first deflector 521 and the second deflector 522 sets dividing plate 55 so that Space between first deflector 521 and the second deflector 522 is divided at least two resonant cavities 551.Or can also be Space between first deflector 521 and the second deflector 522 sets acoustical cotton.Or dividing plate can also be replaced with reinforcement 55, to strengthen the intensity of deflector.

Embodiment two

Referring to Figure 11 and Figure 12, in the present embodiment, it is with the difference of above-described embodiment one, the first ternary blower fan The ternary blower fan system 42 of system 41 and second shares the first 3 d impeller of same spiral case 44, i.e. the first ternary blower fan system 41 412 and second second 3 d impeller 422 of ternary blower fan system 42 be co-located in same spiral case 44.

Installing plate 45 is provided between two 3 d impellers, so as to which two 3 d impellers be separated the two of installing plate 45 Side, installing plate 45 extend to the top of spiral case 44, so as to be separated into two independent Hes of the first oil smoke passage 441 in spiral case 44 Second oil smoke passage 442.Motor 43 is passed through from installing plate 45 and is connected with installing plate 45.

In the present embodiment, outlet housing 5 only includes cover body 51 and the deflector 56 being arranged in cover body 51, deflector 56 Extend on the flow direction of oil smoke, in the present embodiment, to extend in the vertical, position and the phase of installing plate 45 of deflector 56 It is corresponding, so as to which cover body 51 is divided into the independent first diffusion runner 531 corresponding with the oil smoke passage in spiral case 44 and the Two diffusion runners 532.

Alternatively, outlet housing 5 can also use the structure of embodiment one.

Claims (15)

1. a kind of near-suction type oil smoke suction machine, including housing (1), cabinet (2) and blower fan system (4) above housing (1), The housing (1) includes the panel (14) inclined with horizontal direction positioned at front end, it is characterised in that：The blower fan system bag The the first ternary blower fan (41) and the second ternary blower fan (42) being arranged in parallel are included, the blower fan system (4) is arranged in cabinet (2) It is interior, be provided with least two smoke deflectors (15) on front side of the panel (14), the smoke deflector (15) in the lateral direction side by side, Arranged every ground, the gap between the gap, adjacent smoke deflector (15) between the smoke deflector (15) and panel (14) forms air intake Passage (151), at least one of which of the smoke deflector (15) can stretch panel (14) relatively, so as to be closed close to panel (14) Close air intake passage (151) or open air intake passage (151) away from panel (14).

2. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：The panel (14) includes wainscot (142), and it is centered around wainscot (142) periphery, forms the outer panels (143) of framework, is offered on the wainscot (142) With the opening (141) that connects in housing (1), the wainscot (142) relative to outer panels (143) towards housing (1) sunken inside, The smoke deflector (15) and outer panels (143) are in flat plane.

3. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：The smoke deflector (15) includes two can phase The second smoke deflector (153) that flexible the first smoke deflector (152) of counter plate (14) and relative panel (14) are fixed, described second leads Cigarette plate (153) is between two the first smoke deflectors (152).

4. 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) of noise caused by low blower fan system (4), 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.

5. near-suction type oil smoke suction machine according to claim 4, it is characterised in that：The composition sound absorption of the noise reduction module (7) Carrying on the back the baffle plate of chamber includes right baffle-plate (711), right shell body (712), front apron (713), rear baffle (714), bottom baffle (715) and top Baffle plate (716), width of the top baffle (716) in front and rear direction are more than bottom baffle (715), the top baffle (716) by A-P is gradually inclined upwardly, and sound-absorbing hole is offered on the top baffle (716).

6. near-suction type oil smoke suction machine according to claim 5, 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 dividing plate (73) and first chamber (751) is separated at least two first resonant cavities (761), described second It is provided with second chamber dividing plate (74) in chamber (752) and second chamber (752) is separated at least two second resonant cavities (762)。

7. near-suction type oil smoke suction machine according to claim 6, it is characterised in that：The cavity of first resonant cavity (761) Volume is less than the second resonant cavity (762).

8. near-suction type oil smoke suction machine according to claim 4, 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)。

9. near-suction type oil smoke suction machine according to claim 8, it is characterised in that：Baffle plate at the top of the noise reduction module (7) On attached acoustical cotton (781), offer the 3rd sound-absorbing hole matched with the second sound-absorbing hole (772) on the acoustical cotton (781) (773)。

10. near-suction type oil smoke suction machine according to claim 1, it is characterised in that：The first ternary blower fan (41) includes First 3 d impeller (412) and the first air inlet (413), the second ternary blower fan (42) include the second 3 d impeller (422) With the second air inlet (423), on oil smoke flow path, second air inlet (413) and the first air inlet (413) position etc. Together, first air inlet (413) is set up in parallel with the second air inlet (413) and is respectively facing left and right the two of cabinet (2) Side.

11. near-suction type oil smoke suction machine according to claim 10, it is characterised in that：The of the first ternary blower fan (41) One 3 d impeller (412), the second ternary blower fan (42) the second 3 d impeller (422) respectively from the horizontal by 60 °~ 90 °, and two 3 d impellers tilt in the opposite direction.

12. near-suction type oil smoke suction machine according to claim 10, it is characterised in that：The first ternary blower fan (41) is also wrapped The first spiral case (411) is included, first 3 d impeller (412) is arranged in the first spiral case (411), the second ternary blower fan (42) the second spiral case (421) is also included, second 3 d impeller (422) is arranged in the second spiral case (421), first snail Shell (411) and the second spiral case (421) interval, it is arranged side by side, first air inlet (413) is formed in the first spiral case (411) On, second air inlet (423) is formed on the second spiral case (421), formed with the first oil smoke in first spiral case (411) Passage (441), the top of the first oil smoke passage (441) form the first air outlet (414), and second spiral case (421) is interior Formed with the second oil smoke passage (442), the top of the second oil smoke passage (442) forms the second air outlet (424).

13. near-suction type oil smoke suction machine according to claim 10, it is characterised in that：First 3 d impeller (412) and second 3 d impeller (422) in the same spiral case (44) interval, be arranged side by side, corresponding with the first 3 d impeller (412) the One air inlet (413), second air inlet (423) corresponding with the second 3 d impeller (422) are respectively formed at spiral case (44) phase To both sides, be provided with installing plate (45), the peace between first 3 d impeller (412) and the second 3 d impeller (422) Loading board (45) extends to the top of spiral case (44), so as to be separated into two the first independent oil smoke passages in spiral case (44) (441) and the second oil smoke passage (442), top the first air outlet of formation (414) of the first oil smoke passage (441) are described The top of second oil smoke passage (442) forms the second air outlet (424).

14. the near-suction type oil smoke suction machine according to claim 12 or 13, it is characterised in that：Also include being arranged on the first ternary Motor (43) between impeller (412) and the second 3 d impeller (422), the motor (43), which has, to be respectively used to drive The double output shaft of dynamic first 3 d impeller (412) and the second 3 d impeller (422).

15. the near-suction type oil smoke suction machine according to claim 12 or 13, it is characterised in that：Blower fan system (4) go out Outlet housing (5) is provided with air port, the outlet housing (5) includes having in the cover body (51) of hollow tube-shape, the cover body (51) Relative, opening first end (511) and the second end (512), the bore of the first end (511) are more than the second end (512) Bore, is provided with the first deflector (521) and the second deflector (522) in the cover body (51), and each deflector is from cover body (51) first end (511) extends to the second end (512), between first deflector (521) and the madial wall of cover body (51) The first diffusion runner (531) is formed, the second diffusion stream is formed between second deflector (522) and the madial wall of cover body (51) The sectional area of road (532), the first diffusion runner (531) and the second diffusion runner (532) is respectively by the first of cover body (51) End (511) to the second end (512) be gradually reduced, the first diffusion runner (531) first end (511) place of cover body (51) with The first air outlet (414) of first ternary blower fan (41) is corresponding, first end of the second diffusion runner (532) in cover body (51) (511) place is corresponding with the second air outlet (424) of the second ternary blower fan (42).