CN207438685U - A kind of range hood - Google Patents

Abstract

The utility model discloses a kind of range hoods, including exhaust fume collecting hood, the cabinet and lampblack filter that are arranged on above exhaust fume collecting hood, air inlet is formed on exhaust fume collecting hood, air passage is formed in cabinet, lampblack filter includes being arranged on the oil network of air inlet, oil network is integrally in taper that is up big and down small, being extended downwardly by air inlet, blower fan system is provided in cabinet, blower fan system includes the first ternary wind turbine and the second ternary wind turbine that are arranged in parallel, and lampblack filter further includes the rotary sieve for being arranged on interior, air passage the inlet of cabinet.By setting oil network and rotary sieve, oil network can be to air-flow rectification and guiding, rotary sieve is conducive to air-flow and is evenly distributed in air inlet, so that it can be respectively enterd in the corresponding air-inlet cavity of corresponding wind turbine into the oil smoke in air passage, gas individual flow in each air-inlet cavity, the phenomenon that tacking between the air inlet of two adjacent wind turbines is avoided the occurrence of, so that the air quantity of each air inlet of two fans is uniform.

Description

A kind of range hood

Technical field

The utility model is related to machine for kitchen use, especially a kind of range hood.

Background technology

Range hood has become one of machine for kitchen use equipment indispensable in Modern Family.Usual range hood includes top Suction and near-absorption type, the range hood of top suction type utilize the principle that hot gas rises, and suction is generated when cooking to be risen naturally Oil smoke, additionally due to it is clean and tidy light and handy, occupy little space the advantages that, it is and in an increasingly wide range of applications.

Lampblack filter is an important component of range hood, and the technological improvement on lampblack filter is always One hot technology in range hood field.Existing range hood, meeting be to collect the oil smoke generated in cooking, flue dust etc. Purpose and filter screen is installed, a kind of smoke exhaust ventilator as disclosed in the Chinese patent of Application No. 201310359754.1, including Oil cleaner screen, swab case and fan assembly are with swab case is arranged below oil cleaner screen, and oil smoke first passes around oil cleaner screen and carries out machinery Formula oil strain, the bulky grain grease filtered out can be fallen into swab case due to gravity；For another example application number 201610642513.1 Chinese patent disclosed in a kind of bionical filter screen on range hood, be arranged on the cage cigarette of the host lower end of range hood At cover, and positioned at the air inlet of lubricating cup upper end, bionical filter screen is up big and down small or up-small and down-big cone or rectangular vertebra Body or the metal thin shell of square centrum.

In recent years, oil network multiple stratification, oil smoke gas channel are meandering has become a kind of technological trend.Such as Application No. A kind of oil guide structure of new European type cooker hood disclosed in 201410013980.9 Chinese patent, including outer oil network and positioning The rack being arranged on the inside of the outer oil network, offer respectively in the outer oil network and rack several perforative first ventilation holes and Third venting hole, and Oil Guide groove is all formed on the periphery of several first ventilation holes, the opening of several Oil Guide grooves is all Towards inside range hood, and several Oil Guide grooves also connect to form the path that a fuel feeding drip moves, and in outer oil network and Also positioning is provided with the flat interior oil network of polylith between rack；For another example the Chinese patent of Application No. 201621013691.X is public The compound guard of a kind of kitchen ventilator opened, including guard body, guard body includes side and bottom, and side is integrally formed with a circle It is arranged at intervals and the boss of ecto-entad protrusion, boss is arranged on side upper end-face edge, the other end in strip structure and one end Side lower edge is arranged on, oil groove was formed between adjacent two boss of lateral interior surfaces, gather several mesh at the top of boss.

The oil network of these existing multilayers, the vent area of average each layer of oil network account for the ratio of this layer of oil network gross area Maximum does not exceed 50%.And vent area accounts for the ratio of the oil network gross area, can directly influence the smoke evacuation effect of range hood Rate and noise level.And only it can not play the role of enough filtering and rectification by multilayer oil network.Therefore, it need It is further improved.

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 raising Fume-exhausting efficiency, the range hood for reducing noise.

Technical solution is used by the utility model solves above-mentioned technical problem：A kind of range hood, including exhaust fume collecting hood, The cabinet and lampblack filter being arranged on above exhaust fume collecting hood are formed with air inlet on the exhaust fume collecting hood, are formed in the cabinet Have an air passage, the lampblack filter includes being arranged on the oil network of the air inlet, the oil network integrally in it is up big and down small, by The taper that air inlet extends downwardly is provided with blower fan system in the cabinet, it is characterised in that：The blower fan system is included simultaneously Join the first ternary wind turbine and the second ternary wind turbine set, the lampblack filter further include be arranged in the cabinet, wind The rotary sieve of the inlet in road.

For ease of carrying out water conservancy diversion to oil smoke so that soot gas smoothly into range hood, are utmostly strengthened The fume-exhausting ability of range hood, and ensure enough incoming air areas, and it is avoided that oil droplet is directly dropped onto on hearth, it is described Oil network includes internal layer oil network and the outer layer oil network for being arranged on internal layer oil network periphery, and the internal layer oil network includes inner layer net body and opens The first ventilation hole being located on inner layer net body, the outer layer oil network include outer layer net body and are opened on outer layer net body Second ventilation hole, first ventilation hole are less than the second ventilation hole, and first ventilation hole and the second ventilation hole interlaced arrangement make The orthographic projection obtained in same level is partly overlapped.

For reduce oil smoke by noise, ensure enough incoming air areas, and can ensure that preferable filter effect, described the One ventilation hole assumes diamond in shape, and the length of first ventilation hole is 1.0~2.0mm, width is 1.0mm~2.0mm, arbitrary neighborhood two Most short side between a first ventilation hole is away from for 0.3~0.6mm.

Preferably, for ease of the setting of rotary sieve, the rotary sieve includes being used for the Dropbox of filtering fume and be used for The motor of Dropbox rotation is driven, the output shaft of the motor is inserted into the center of Dropbox and connects fixation, and the motor passes through electricity Machine support is connected fixation with cabinet.

To promote the rigidity of Dropbox, filter effect is promoted as much as possible, is offered on the surface of the Dropbox along center pair The slot for the arc for claiming and being arranged in array, each slot are radially extended along Dropbox, and the slot at least divides along the radial direction of Dropbox It is furnished with two layers.

To cause oil smoke with minimum flow velocity by rotary sieve, the time to contact with each other between the two is longer, so as to reach To preferable filter effect, the air passage is in diminishing shape from the bottom to top.

Grease to avoid cabinet and wind turbine is dropped onto below range hood, in the cabinet, below rotary sieve It is provided with oil drain pan, the oil drain pan includes disk body, the cross-section adaptation of the shape of the disk body, size and cabinet, and And the edge of disk body is located at the lower section of cabinet and extends the bottom edge of cabinet and be supported on the air inlet edge of exhaust fume collecting hood Lower section.

For ease of guiding oil smoke air-flow, opening is formed among the disk body, the disk body prolongs upwards in opening It stretches certain distance and forms diversion division, the diversion division is opposite with rotary sieve, and the edge of the rotary sieve exceeds diversion division.

On the basis of Cabinet Size is not changed, to increase air quantity, the first ternary wind turbine includes the first 3 d impeller With the first air inlet, the second ternary wind turbine includes the second 3 d impeller and the second air inlet, on oil smoke flow path, institute It states 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 distinguish 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 wind turbine, the second 3 d impeller of the second ternary wind turbine respectively from the horizontal by 60 °~90 °, and And two 3 d impellers tilt in the opposite direction.

One side according to the present utility model, the first ternary wind turbine further include the first spiral case, first ternary Impeller is arranged in the first spiral case, and the second ternary wind turbine further 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 are arranged side by side, and first air inlet is formed in the first spiral case On, second air inlet is formed on the second spiral case, and the first oil smoke passage, first oil are formed in first spiral case The top of cigarette channel forms the first air outlet, and the second oil smoke passage, the second oil smoke passage are formed in second spiral case Top formed the second air outlet.

Between other side according to the present utility model, the first 3 d impeller and the second 3 d impeller are in same spiral case Every, be arranged side by side, the first air inlet corresponding with the first 3 d impeller, with the second 3 d impeller it is corresponding second air inlet Mouth is respectively formed at the opposite 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 simultaneously, the drive being arranged between the first 3 d impeller and the second 3 d impeller is further included Dynamic motor, the driving motor have the double output shaft for being respectively used to the first 3 d impeller of driving and the second 3 d impeller.

Gas accordingly to be exported to two ternary wind turbines plays guide functions, is conducive 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 at the air outlet of the blower fan system The cover body in hollow tube-shape is included, the cover body has the first end and second end of opposite opening, and the bore of the first end is big In being provided with the first deflector and the second deflector in the bore of second end, the cover body, each deflector is from the first of cover body It holds to second end and extends, the first diffusion runner, second water conservancy diversion are formed between first deflector and the madial wall of cover body The section integration of the second diffusion runner, the first diffusion runner and the second diffusion runner is formed between plate and the madial wall of cover body Be not gradually reduced by first end to the second end of cover body, the first diffusion runner at the first end of cover body with the first ternary wind First air outlet of machine corresponds to, the second diffusion runner at the first end of cover body with the second air outlet of the second ternary wind turbine It is corresponding.

Compared with prior art, the utility model has the advantage of：By setting oil network and rotary sieve, oil network can be right Air-flow rectification and guiding, rotary sieve is conducive to air-flow and is evenly distributed in air inlet, so that into the oil smoke in air passage It can respectively enter in the corresponding air-inlet cavity of corresponding wind turbine, gas individual flow in each air-inlet cavity avoids the occurrence of two The phenomenon that tacking between the air inlet of adjacent wind turbine, so that the air quantity of each air inlet of two fans is uniform；By setting Double-deck oil network is put, since the ventilation hole of two layers of oil network shifts to install, the oil droplet of intracavitary drippage can be blocked so that oil droplet will not It directly drops onto on hearth, by limiting the spacing between the arrangement mode of internal layer mesh and the size of mesh, mesh, ensure that The incoming air area of oil network, outer layer oil network play guide functions for soot gas so that soot gas more swimmingly enter oil suction Smoke machine；Rotary sieve is arranged at the tunnel inlet in cabinet, can cause oil smoke with relatively low flow velocity by rotary sieve, The time to contact with each other between the two is longer, and oil smoke can be caused fully to be collided with rotary sieve, so as to reach preferably mistake Filter effect.

Description of the drawings

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

Fig. 2 is the sectional view of the range hood of the utility model embodiment；

Fig. 3 is the partial schematic diagram of the range hood of the utility model embodiment；

Fig. 4 is the schematic diagram of the oil network of the range hood of the utility model embodiment；

Fig. 5 is the decomposition texture schematic diagram of the oil network of Fig. 4；

Fig. 6 is the schematic diagram of the rotary sieve of the range hood of the utility model embodiment；

Fig. 7 is the schematic diagram of the oil drain pan of the range hood of the utility model embodiment；

Fig. 8 is the blower fan system of range hood of the utility model and the sectional view of outlet housing one embodiment；

Fig. 9 is the schematic diagram of the outlet housing of the range hood of Fig. 1；

Figure 10 is the schematic diagram of second embodiment of blower fan system and outlet housing of the range hood of the utility model；

Figure 11 is the blower fan system of range hood of Figure 10 and the sectional view of outlet housing.

Specific embodiment

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

Embodiment one

Referring to Fig. 1~Fig. 3, a kind of range hood, including exhaust fume collecting hood 1, the cabinet 2 being arranged on above exhaust fume collecting hood 1, cabinet 2 Inside it is provided with blower fan system 4.Air inlet 11 is offered on exhaust fume collecting hood 1, the blower fan system 4 in cabinet 2 can aspirate oil smoke as a result, Common flue is discharged into after entering cabinet 2 by air inlet 11.

Air passage 25 is formed in cabinet, air passage 25 is preferably gradually reduced from the bottom to top.

Blower fan system 4 in cabinet 2 uses ternary wind turbine, the prior art can be used, such as the Application No. of the applicant Blower fan structure disclosed in 201620102790.9 patent, the air outlet of blower fan system 4 are provided with outlet housing 5, for inciting somebody to action The oil smoke discharge that blower fan system 4 is discharged is to wind pipe.The concrete structure of blower fan system 4 will be explained below.

Range hood further includes lampblack filter, in the present embodiment, is filtered using twice, the oil including being located at upstream Net 8 and the rotary sieve 6 positioned at downstream.Wherein, rotary sieve 6 is arranged in cabinet 2, positioned at the lower section of blower fan system 4, is located at Bottom in cabinet 2.That is, rotary sieve 6 is arranged on the inlet in above-mentioned air passage 25, and air passage 25 is gradual from the bottom to top It reduces, is then also accelerated by the oil smoke of rotary sieve 6 without air passage 25, at this point, oil smoke is filtered with minimum flow velocity by rotating Net 6, the time to contact with each other between the two is longer, and oil smoke can be caused fully to be collided with rotary sieve 6, preferable so as to reach Filter effect.

The needs of rotary sieve 6 are maintained a certain distance with blower fan system 4, to ensure that oil smoke passes through rotation with relatively low flow velocity Strainer 6, so as to fully be filtered, after rotary sieve 6 carries out brokenly whirlpool to oil smoke so that the flowing that oil smoke passes through certain distance Path side reaches blower fan system 4, to ensure that it is smooth that oil smoke sufficiently achieves；It between the two again cannot be apart from too far, otherwise rotation filter Net 6 will be beyond the greatest limit of the negative pressuren zone of blower fan system 4.Structure on rotary sieve 6 will be explained below.

Oil network 8 is then arranged at air inlet 11 and sets, and the bottom of oil network 8 is provided with lubricating cup 9.Oil network 8 is whole in up big and down small Taper, extended downwardly by air inlet 11.Referring to Fig. 2, Fig. 4 and Fig. 5, oil network 8 includes internal layer oil network 81 and is arranged on internal layer The outer layer oil network 82 of 81 periphery of oil network, internal layer oil network 81 and outer layer oil network 82 are in up big and down small taper.

Internal layer oil network 81 includes inner layer net body 811 and the first ventilation hole 812 being opened on inner layer net body 811, In the present embodiment, the first ventilation hole 812 assumes diamond in shape, the noise generated when reducing oil smoke through internal layer oil network 81, by size not Uniform grease molecules water conservancy diversion is into grease molecules of uniform size, in order to the preferably oil removing of rotary sieve 6 of rear end.Inner layer net The thickness of body 81 is preferably 0.3~1mm, the length of the first ventilation hole 812 is 1.0~2.0mm, width (in diagonal compared with The length of short one) for 1.0mm~2.0mm, most short side between two the first ventilation holes 812 of arbitrary neighborhood away from for 0.3~ Thus 0.6mm both ensure that the incoming air area of internal layer oil network 81, also ensure that preferable filter effect.

Outer layer oil network 82 includes outer layer net body 821 and the second ventilation hole 822 being opened on outer layer net body 821.Outside Layer net body 821 has there are four side wall, is to be in tilted layout, and the water conservancy diversion of four direction can be carried out to oil smoke so that cooking fume Body is smoothly into the fume-exhausting ability of range hood, utmostly reinforcement range hood.Second ventilation hole 822 for it is upper, The rectangle or ellipse of lower extension, width is 6mm~10mm, most short between two the second ventilation holes 822 of arbitrary neighborhood Back gauge is 2mm~5mm.

821 interlaced arrangement of first ventilation hole 811 and the second ventilation hole, i.e. the first ventilation hole 811 and the second ventilation hole 821 exist Orthographic projection in same level is partly overlapped, and forms overlapping portion, and of different sizes, the part increase of staggering of two kinds of ventilation holes Oil smoke trapping area, and lap can then block the oil droplet of drippage inside range hood so that oil droplet will not directly drip It falls on hearth.

The oil smoke in negative suction area first contacts before air intake passage is entered with oil network 8, is attached to bulky grain grease interior In layer oil network 81, prevent bulky grain grease from entering range hood.Oil network 8 is under high-speed flow, superposition and two layers of oil network staggeredly The separating for several times elaioleucites such as condensation, rectification, shock are formed, oil smoke absorbs cleaner.

Rotary sieve 6 includes being used for the Dropbox 61 of filtering fume and for driving the motor 62 that Dropbox 61 rotates.Referring to Fig. 2 And Fig. 6, the slot 611 of the arc along central symmetry and array arrangement is offered on the surface of Dropbox 61, slot 611 is perforation Dropbox 61 Straight slot, at least two layers of 611 array of slot can be radially set on the surface of Dropbox 61, since oil smoke is into draught fan impeller Flue gas is influenced in the concentration distribution of circumference be subject to the rotating speed of wind turbine, the species of impeller and inlet and outlet angular dimensions before, and layering is set After meter, the rigidity of Dropbox 61 is on the one hand improved, it on the other hand, can be dense according to actual flue gas after specific selected blower fan system Distribution character is spent, every layer of slot 611 can be more freely distributed to optimal width dimensions, without the shadow by other layer of slot 611 It rings, promotes filter effect as much as possible.

611 array of slot is arranged to centrosymmetric annular shape, and each slot 611 radially extends, bending direction and arc Degree is preferably consistent.By setting the slot 611 radially extended and with certain radian, after grease is contacted with Dropbox 61, It can compare and successfully flow from inside to outside, and realize that the grease of higher efficiency centrifuges after obtaining the centrifugal force of bigger.

Motor 62 is arranged on the top of Dropbox 61, and the output shaft 621 of motor 62 is inserted into the center of Dropbox 61 and company Fixation is connect, thus motor 62 can drive Dropbox 61 to rotate.The arranged on left and right sides of motor 62 passes through electric machine support 622 and cabinet 2 respectively Left side wall fixation is connected with right side wall, as a result, complete rotary sieve 6 installation.

The bottom of cabinet 2 is extended at the air inlet 11 of exhaust fume collecting hood 1, and is set in cabinet 2, positioned at 6 lower section of rotary sieve Oil drain pan 7 is equipped with, referring to Fig. 7, oil drain pan 7 includes disk body 71 and diversion division 72, shape, size and the cabinet 2 of disk body 71 Cross-section adaptation, be arranged in cabinet 2 to horizontal or almost horizontal, and the edge of disk body 71 be located at cabinet 2 lower section, And it is supported on beyond the bottom edge of cabinet 2 below 11 edge of air inlet of exhaust fume collecting hood 1.The oil dripped as a result, in cabinet 2 The grease that fat, blower fan system 4 are thrown away can be dropped on disk body 71.Each side in the air passage 25 of cabinet 2 is inclined, contributes to Oil under blower fan system 4 is got rid of is imported on disk body 71.

Opening 711 is formed among disk body 71, disk body 71 extends a distance up to form water conservancy diversion at opening 711 Portion 72, diversion division 72 is opposite with the Dropbox 61 of rotary sieve 6, cross section or the circle of opening 711 and diversion division 72, and And the edge of Dropbox 61 can exceed diversion division 72 so that the grease that rotary sieve 6 is thrown away can be also dropped on disk body 71, simultaneously Diversion division 72 also can play the role of water conservancy diversion to the oil smoke entered from exhaust fume collecting hood 1.

Referring to Fig. 2, Fig. 8 and Fig. 9, in the present embodiment, it is preferred that blower fan system 4 include two can independent operation the One ternary wind turbine 41 and the second ternary wind turbine 42, two ternary fan parallel-connections are set.By using 3 d impeller, compared to centrifugation Flow efficiency can be significantly increased in wind turbine, improve air quantity.

First ternary wind turbine 41 includes the first spiral case 411 and the first 3 d impeller 412 being arranged in the first spiral case 411, Second ternary wind turbine 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 second spiral case 421 side by side, compartment of terrain arrangement, be formed with the first air inlet 413, the second spiral case 421 on the first spiral case 411 On be formed with the second air inlet 423, away from each other, i.e. the air inlet 313 of the first spiral case 411 is formed in the air inlet of two spiral cases One side away from the second spiral case 421, two back-to-back settings of spiral case so that two ternary wind turbines are arranged side by side in left and right, and 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 enters from exhaust fume collecting hood 1 When, it is entered respectively from arranged on left and right sides in blower fan system 4.The first oil smoke passage 441, the first oil smoke are formed in first spiral case 411 The top of passage 441 forms the first air outlet 414, and the second oil smoke passage 442, the second oil smoke passage are formed in the second spiral case 421 442 tops form the second air outlet 424, the first air outlet 414 and the second air outlet 424 side by side, compartment of terrain arrangement.

The prior art can be used in first 3 d impeller 412 and the second 3 d impeller 422, 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 Driving motor 43, driving motor 43 are arranged between the first spiral case 411 and the second spiral case 421, and driving motor 43 has dual output Axis, the output shaft 431 thus extended to the left can be connected with the first 3 d impeller 412 and the first 3 d impeller 412 driven to operate, to The output shaft 431 of right extension can be connected with the second 3 d impeller 422 and the second 3 d impeller 422 is driven to operate.Thus may be such that Two ternary wind turbines have preferable synchronism, while again can be energy saving.

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 25 entrance of air passage 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 25 entrance of air passage maintains a certain distance, which is 1~2 times of the diameter of the second 3 d impeller 422, impeller center and air passage The distance of 25 entrances has to be larger than impeller diameter, and the rotary sieve 26 of such 25 inlet of air passage can just play a role, but also not 2 times of diameters can be more than, otherwise apart from negative pressure region apart from too far.

Same structure, and this arrangement, blower fan system overall volume may be employed in above-mentioned two ternary wind turbine It is smaller, 2 original size of cabinet can not changed in the case where keeping higher wind pressure and can so that air quantity is double, 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 A kitchen range achievees the effect that not run cigarette；Noise transmission path makes towards arranged on left and right sides rather than direction in the prior art User thus reduces 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 of the first ternary wind turbine 41 First air outlet 414 of spiral case 411, the second spiral case 421 of the second ternary wind turbine 42 the second air outlet 424 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 Opposite first end 511 (lower end) and second end 512 (upper end) opening, the bore of first end 511 are more than the mouth of second end 512 Footpath is open and is 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 is from first end 511 enter in cover body 51, and leave cover body 51 into the external pipe being connected with outlet housing 5 from second end 512.

Deflector includes the first deflector 521 and the second deflector 522, and the first deflector 521 is from the first end of cover body 51 511 extend to second end 512, and the first deflector 521 is at the first end 511 of cover body 51, with the first ternary wind turbine 41 First edge of the second air outlet 424 close to the second ternary wind turbine 42 at the first air outlet 414 be 415 (the first air outlet Right edge) corresponding, second air outlet of second deflector 522 at the first end 511 of cover body 51, with the second ternary wind turbine 42 Second edge 425 (left side edge of the second air outlet) of the first air outlet 414 close to the first ternary wind turbine 41 at 424 is right It should.Each deflector has the width extended in front and rear direction.First deflector 521 by first end 511 to second end 512, The second deflector 522 (to the right) is increasingly towards to tilt, the second deflector 522 by first end 511 to second end 512, be increasingly towards First deflector 521 tilts (to the left), i.e., each deflector deviates intermediate position into 51 top of cover body from 51 bottom of cover body Between position extension.First deflector 521 is mutually connected with the top of the second deflector 522 (close to the second end 512 of cover body 51) It connects, 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 always 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 always with cover body 51 of front and rear sides side of plate 522 is connected.Thus it is divided into cover body 51 in cover body 51 Between the first diffusion runner 531,51 madial wall of cover body 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 wind turbine 41 at the first end 511 of body 51, that is, the first air outlet 414 is completely covered, Second diffusion runner 532 is corresponding with the second air outlet 424 of the second ternary wind turbine 42 at the first end 511 of cover body 51, i.e., complete The second air outlet of all standing 424.The sectional area of first diffusion runner 531 is gradually reduced by first end 511 to second end 512, the The sectional area first end 511 of two diffusion runners 532 to second end 512 is gradually reduced, as a result, at the top of the first diffusion runner 531 Muzzle velocity is more than the muzzle velocity of 531 bottom of the first diffusion runner, and the muzzle velocity at the top of the second diffusion runner 532 is more than the The muzzle velocity of two diffusion runners, 532 bottom.

By setting above-mentioned deflector so that first connected with the first air outlet 414 of the first ternary wind turbine 41 is expanded Pressure runner 531, the air velocity of the second diffusion runner 42 connected with the second air outlet 424 of the second ternary wind turbine 42 connect each other Closely.This guide functions of outlet housing 5 are conducive to exit gas and form laminar flow, are formed after laminar flow into external pipe, avoided The defects of air-flow is directly entered external pipe after being come out from spiral case with turbulent condition also avoids the air outlet of two ternary wind turbines Strong friction and shock when air-flow mixes so as to which flow losses be greatly lowered, improves efficiency.

Sound-absorbing hole 54 is densely covered on 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 partition plate 55 so that Space between first deflector 521 and the second deflector 522 is divided at least two resonant cavities 551.Alternatively, can also be Space between first deflector 521 and the second deflector 522 sets acoustical cotton.Alternatively, partition plate can also be replaced with reinforcing rib 55, to enhance the intensity of deflector.

The form of above-mentioned this two fans vertical display in parallel, the most strong negative pressuren zone face that can cause blower fan system 4 are left The air-flow that right both sides enter, and double air intake passages on smoke-collecting plate 3 can cause the air-flow that lower section enters from left and right sides negative pressure Most strong region enters blower fan system 4, reduces the escapement ratio of oil smoke.

By setting oil network 8 and rotary sieve 6, oil network 8 can be conducive to gas to air-flow rectification and guiding, rotary sieve 6 Stream is evenly distributed in air inlet so that into the oil smoke in air passage 25 can respectively enter corresponding wind turbine it is corresponding into Wind intracavitary, gas individual flow in each air-inlet cavity avoid the occurrence of showing of tacking between the air inlet of two adjacent wind turbines As so that the air quantity of each air inlet of two fans is uniform.

Embodiment two

Referring to Figure 10 and Figure 11, in the present embodiment, with above-described embodiment one the difference is that, the first ternary wind turbine 41 and second ternary wind turbine 42 share same spiral case 44, i.e. the first 3 d impeller 412 and the 2nd 3 of the first ternary wind turbine 41 Second 3 d impeller 422 of first wind turbine 42 is co-located in same spiral case 44.

Installing plate 45 is provided between two 3 d impellers, so as to separate two 3 d impellers 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 441 Hes of the first oil smoke passage in spiral case 44 Second oil smoke passage 442.Driving motor 43 passes through from installing plate 45 and is connected fixation 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 longitudinal direction, position and 45 phase of installing plate of deflector 56 It is corresponding, so as to which cover body 51 be divided into and corresponding the first independent diffusion runner 531 of 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 (14)

1. a kind of range hood, including exhaust fume collecting hood (1), the cabinet (2) and lampblack filter that are arranged on above exhaust fume collecting hood (1), Air inlet (11) is formed on the exhaust fume collecting hood (1), air passage (25), the lampblack filter are formed in the cabinet (2) Including the oil network (8) being arranged at the air inlet (11), the oil network (8) is in integrally up big and down small, by air inlet (11) The taper extended downwardly, the cabinet (2) is interior to be provided with blower fan system (4), it is characterised in that：The blower fan system (4) includes The the first ternary wind turbine (41) and the second ternary wind turbine (42) being arranged in parallel, the lampblack filter further include be arranged on it is described Cabinet (2) is interior, the rotary sieve (6) of the inlet of air passage (25).

2. range hood according to claim 1, it is characterised in that：The oil network (8) includes internal layer oil network (81) and sets The outer layer oil network (82) in internal layer oil network (81) periphery is put, the internal layer oil network (81) includes inner layer net body (811) and opens up The first ventilation hole (812) on inner layer net body (811), the outer layer oil network (82) include outer layer net body (821) and open The second ventilation hole (822) being located on outer layer net body (821), first ventilation hole (812) are less than the second ventilation hole (822), first ventilation hole (812) and the second ventilation hole (822) interlaced arrangement cause the orthographic projection in same level Partly it is overlapped.

3. range hood according to claim 2, it is characterised in that：First ventilation hole (812) assumes diamond in shape, and described The length of one ventilation hole (812) is 1.0~2.0mm, width is 1.0mm~2.0mm, two the first ventilation holes of arbitrary neighborhood (812) most short side between is away from for 0.3~0.6mm.

4. range hood according to claim 1, it is characterised in that：The rotary sieve (6) includes being used for filtering fume Dropbox (61) and for driving the motor (62) that Dropbox (61) rotates, the output shaft (621) of the motor (62) is inserted into net The center of disk (61) and connect fixation, the motor (62) is connected fixation by electric machine support (622) with cabinet (2).

5. range hood according to claim 4, it is characterised in that：It is offered on the surface of the Dropbox (61) along center The slot (611) of arc that is symmetrical and being arranged in array, each slot (611) radially extending along Dropbox, and the slot (611) edge The radial direction of Dropbox (61) is at least distributed with two layers.

6. range hood according to claim 4, it is characterised in that：The air passage (25) is in diminishing from the bottom to top Shape.

7. range hood described in any one of claim 1 to 3, it is characterised in that：In the cabinet (2), positioned at rotation Turn to be provided with oil drain pan (7) below strainer (6), the oil drain pan (7) includes disk body (71), the shape of the disk body (71) The cross-section adaptation of shape, size and cabinet (2), and the edge of disk body (71) is located at the lower section of cabinet (2) and extends machine The bottom edge of case (2) and be supported below air inlet (11) edge of exhaust fume collecting hood (1).

8. range hood according to claim 7, it is characterised in that：Opening is formed among the disk body (71) (711), the disk body (71) extends a distance up to form diversion division (72), the diversion division at opening (711) (72) with rotary sieve (6) relatively, the edge of the rotary sieve (6) exceeds diversion division (72).

9. range hood described in any one of claim 1 to 3, it is characterised in that：The first ternary wind turbine (41) Including the first 3 d impeller (412) and the first air inlet (413), the second ternary wind turbine (42) includes the second 3 d impeller (422) and the second air inlet (423), on oil smoke flow path, second air inlet (423) and the first air inlet (413) Position is equal, and first air inlet (413) is set up in parallel with the second air inlet (423) and is respectively facing cabinet (2) Arranged on left and right sides.

10. range hood according to claim 9, it is characterised in that：First ternary of the first ternary wind turbine (41) Impeller (412), the second 3 d impeller (422) of the second ternary wind turbine (42) respectively from the horizontal by 60 °~90 °, and And two 3 d impellers tilt in the opposite direction.

11. range hood according to claim 9, it is characterised in that：The first ternary wind turbine (41) further includes first Spiral case (411), first 3 d impeller (412) are arranged in the first spiral case (411), and the second ternary wind turbine (42) is also wrapped The second spiral case (421) is included, second 3 d impeller (422) is arranged in the second spiral case (421), first spiral case (411) It is spaced, is arranged side by side with the second spiral case (421), first air inlet (413) is formed on the first spiral case (411), described Second air inlet (423) is formed on the second spiral case (421), and the first oil smoke passage is formed in first spiral case (411) (441), the top of the first oil smoke passage (441) forms the first air outlet (414), is formed in second spiral case (421) There is the second oil smoke passage (442), the top of the second oil smoke passage (442) forms the second air outlet (424).

12. range hood according to claim 9, it is characterised in that：First 3 d impeller (412) and the second 3 d impeller (422) it is spaced, is arranged side by side in same spiral case (44), with corresponding first air inlet of the first 3 d impeller (412) (413), the opposite both sides of spiral case (44) are respectively formed at corresponding second air inlet (423) of the second 3 d impeller (422), Installing plate (45) is provided between first 3 d impeller (412) and the second 3 d impeller (422), the installing plate (45) is prolonged The top of spiral case (44) is reached, so as to which two the first independent oil smoke passages (441) and the second oil will be separated into spiral case (44) Cigarette channel (442), the top of the first oil smoke passage (441) form the first air outlet (414), the second oil smoke passage (442) top forms the second air outlet (424).

13. the range hood according to claim 11 or 12, it is characterised in that：It further includes and is arranged on the first 3 d impeller (412) driving motor (43) between the second 3 d impeller (422), the driving motor (43), which has, is respectively used to driving the The double output shaft of one 3 d impeller (412) and the second 3 d impeller (422).

14. the range hood according to claim 11 or 12, it is characterised in that：At the air outlet of the blower fan system (4) Be provided with outlet housing (5), the outlet housing (5) includes the cover body (51) in hollow tube-shape, the cover body (51) have it is opposite, The first end (511) of opening and second end (512), the bore of the first end (511) are more than the bore of second end (512), institute It states and the first deflector (521) and the second deflector (522) is provided in cover body (51), each deflector is from the first of cover body (51) (511) is held to extend to second end (512), first is formed between first deflector (521) and the madial wall of cover body (51) and is expanded Runner (531) is pressed, the second diffusion runner (532), institute are formed between second deflector (522) and the madial wall of cover body (51) The sectional area of the first diffusion runner (531) and the second diffusion runner (532) is stated respectively by the first end (511) of cover body (51) to Two ends (512) are gradually reduced, the first diffusion runner (531) at the first end (511) of cover body (51) with the first ternary wind The first air outlet (414) of machine (41) is corresponding, the second diffusion runner (532) at the first end (511) of cover body (51) with The second air outlet (424) of second ternary wind turbine (42) is corresponding.