CN109780595A - A kind of range hood - Google Patents

Abstract

The invention discloses a kind of range hoods, including exhaust fume collecting hood, the cabinet and lampblack filter that are arranged in above exhaust fume collecting hood, air inlet is formed on exhaust fume collecting hood, air duct is formed in cabinet, lampblack filter includes the oil network that air inlet is arranged in, 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 blower and the second ternary blower being arranged in parallel, lampblack filter further include be arranged in cabinet, the rotary sieve of the inlet in air duct.Pass through setting oil network and rotary sieve, oil network can be rectified and be guided to air-flow, rotary sieve is conducive to air-flow and is evenly distributed in air inlet, so that can be respectively enterd in the corresponding air-inlet cavity of corresponding blower into the oil smoke in air duct, gas individual flow in each air-inlet cavity, the phenomenon that tacking between the air inlet of two adjacent blowers 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 present invention relates to machine for kitchen use, especially a kind of range hood.

Background technique

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 principle that the range hood of top suction type utilizes hot gas to rise, 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, and it is in an increasingly wide range of applications.

Lampblack filter is an important component of range hood, and the technological improvement about 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 application No. is 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, the cage cigarette of the host lower end of range hood is set At cover, and it is located 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 airflow channel are meandering has become a kind of technological trend.Such as application No. is A kind of oil guide structure of novel European type cooker hood disclosed in 201410013980.9 Chinese patent, including outer oil network and positioning The rack being set on the inside of the outer oil network, offered in the outer oil network and rack respectively several perforative first ventilation holes and Third venting hole, and it is all formed with Oil Guide groove 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 dynamic path of a fuel feeding drip, and in outer oil network and Also positioning is provided with the flat interior oil network of muti-piece between rack；For another example application No. is the Chinese patent of 201621013691.X public affairs The compound mesh enclosure of a kind of kitchen ventilator opened, including mesh enclosure ontology, mesh enclosure ontology include side and bottom, and side is integrally formed with a circle The boss of interval setting and ecto-entad protrusion, boss structure in long strip and one end are arranged in side upper end-face edge, the other end Setting constituted oil groove between side lower edge, adjacent two boss of lateral interior surfaces, and gather several mesh at the top of boss.

The vent area of the oil network of these existing multilayers, average each layer of oil network accounts 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, will have a direct impact on the smoke evacuation effect of range hood Rate and noise level.And multilayer oil network is only leaned on, enough filterings and rectification can not be played the role of.Therefore, it need It is further improved.

Summary of the invention

The technical problem to be solved by the present invention is in view of the above-mentioned problems of the prior art, providing a kind of raising oil suction Cigarette efficiency, the range hood for reducing noise.

The technical scheme of the invention to solve the technical problem is: a kind of range hood, including exhaust fume collecting hood, setting Cabinet and lampblack filter above exhaust fume collecting hood are formed with air inlet on the exhaust fume collecting hood, are formed with wind in the cabinet Road, the lampblack filter include the oil network that the air inlet is arranged in, the oil network be integrally in it is up big and down small, by entering the wind The taper that extends downwardly at mouthful is provided with blower fan system in the cabinet, it is characterised in that: the blower fan system is set including parallel connection The the first ternary blower and the second ternary blower set, the lampblack filter further include be arranged in the cabinet, air duct The rotary sieve of inlet.

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

To reduce the noise that passes through of oil smoke, guarantee 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.

It preferably, is the setting convenient for rotary sieve, the rotary sieve includes for the Dropbox of filtering fume excessively and being used for The motor of Dropbox rotation is driven, the output shaft of the motor is inserted into the center of Dropbox and is connected and fixed, and the motor passes through electricity Machine support is connected and fixed with cabinet.

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

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

To avoid the grease of cabinet and blower from dropping onto below range hood, in the cabinet, it is located at below rotary sieve It is provided with oil drain pan, the oil drain pan includes disk ontology, the cross-section adaptation of the shape of the disk ontology, size and cabinet, and And the edge of disk ontology 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 convenient for guiding oil smoke air-flow, the intermediate of the disk ontology forms opening, and the disk ontology 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 not changing Cabinet Size, to increase air quantity, the first ternary blower includes the first 3 d impeller With the first air inlet, the second ternary blower includes the second 3 d impeller and the second air inlet, on oil smoke flow path, institute It states the second air inlet to be equal with the first air inlet position, first air inlet and the second air inlet are set side by side and distinguish Towards the arranged on left and right sides of cabinet.

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

According to an aspect of the present invention, the first ternary blower further includes the first spiral case, first 3 d impeller It is arranged in the first spiral case, the second ternary blower further includes the second spiral case, and second 3 d impeller is arranged in the second snail In shell, first spiral case and the second spiral case interval are arranged side by side, and first air inlet is formed on the first spiral case, institute It states the second air inlet to be formed on the second spiral case, the first oil smoke channel is formed in first spiral case, first oil smoke is logical The top in road forms the first air outlet, is formed with the second oil smoke channel, the top in second oil smoke channel in second spiral case End forms the second air outlet.

According to another aspect of the present invention, the first 3 d impeller and the second 3 d impeller be spaced in the same spiral case, It is arranged side by side, the first air inlet corresponding with the first 3 d impeller, the second air inlet corresponding with the second 3 d impeller The opposite two sides of spiral case are respectively formed at, are provided with mounting plate between first 3 d impeller and the second 3 d impeller, it is described Mounting plate extends to the top of spiral case, so that two independent first oil smoke channels will be separated into and the second oil smoke leads in spiral case Road, the top in first oil smoke channel form the first air outlet, and the top in second oil smoke channel forms the second air outlet.

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

Gas accordingly to export to two ternary blowers plays guide functions, is conducive to exit gas and forms laminar flow, from And flow losses are greatly lowered, it improves efficiency, outlet housing, the outlet housing packet is provided at the air outlet of the blower fan system The cover in hollow tube-shape is included, the cover 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, each deflector from cover first It holds to second end and extends, form the first diffusion runner, second water conservancy diversion between first deflector and the inner sidewall of cover The second diffusion runner, the section integral of the first diffusion runner and the second diffusion runner are formed between plate and the inner sidewall of cover Be not gradually reduced by the first end of cover to second end, the first diffusion runner at the first end of cover with the first ternary wind First air outlet of machine is corresponding, the second diffusion runner at the first end of cover with the second air outlet of the second ternary blower It is corresponding.

Compared with the prior art, the advantages of the present invention are as follows: it can be to air-flow by setting oil network and rotary sieve, oil network Rectification and guidance, rotary sieve is conducive to air-flow and is evenly distributed in air inlet, so that can be with into the oil smoke in air duct Respectively enter in the corresponding air-inlet cavity of corresponding blower, gas individual flow in each air-inlet cavity, avoid the occurrence of two it is adjacent Blower air inlet between the phenomenon that tacking so that the air quantity of each air inlet of two fans is uniform；It is double by being arranged The oil network of layer can block the oil droplet of intracavitary drippage since the ventilation hole of two layers of oil network shifts to install, so that oil droplet will not be direct It drops on hearth, by limiting the spacing between the arrangement mode of internal layer mesh and the size of mesh, mesh, ensure that oil network Incoming air area, outer layer oil network plays guide functions for soot gas, so that soot gas more swimmingly enters range hood； Rotary sieve is arranged at the tunnel inlet in cabinet, oil smoke can be made to pass through rotary sieve, the two with lower flow velocity Between time for contacting with each other it is longer, oil smoke can be made fully to collide with rotary sieve, to reach preferable filtering effect Fruit.

Detailed description of the invention

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

Fig. 2 is the cross-sectional view of the range hood of the embodiment of the present invention；

Fig. 3 is the partial schematic diagram of the range hood of the embodiment of the present invention；

Fig. 4 is the schematic diagram of the oil network of the range hood of the embodiment of the present invention；

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 embodiment of the present invention；

Fig. 7 is the schematic diagram of the oil drain pan of the range hood of the embodiment of the present invention；

Fig. 8 is the blower fan system of range hood of the invention and the cross-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 range hood of the invention；

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

Specific embodiment

The present invention will be described in further detail below with reference to the embodiments of the drawings.

Embodiment one

Referring to FIG. 1 to FIG. 3, a kind of range hood, including exhaust fume collecting hood 1, the cabinet 2 being arranged in 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 duct 25 is formed in cabinet, air duct 25 is preferably gradually reduced from the bottom to top.

Blower fan system 4 in cabinet 2 uses ternary blower, the prior art can be used, as the applicant application No. is Blower fan structure disclosed in 201620102790.9 patent, the air outlet of blower fan system 4 are provided with outlet housing 5, and being used for will The oil smoke discharge that blower fan system 4 is discharged is to wind pipe.The specific 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 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 in the inlet in above-mentioned air duct 25, and air duct 25 is from the bottom to top gradually It reduces, is then also accelerated without air duct 25 by the oil smoke of rotary sieve 6, at this point, oil smoke passes through rotation filter with the smallest flow velocity Net 6, the time to contact with each other between the two is longer, and oil smoke can be made fully to collide with rotary sieve 6, to reach preferable 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 lower flow velocity Strainer 6, 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 exceed the greatest limit of the negative pressuren zone of blower fan system 4.Structure about rotary sieve 6 will be explained below.

Oil network 8 is then arranged to be set at air inlet 11, 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 include internal layer oil network 81 and are arranged in 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 ontology 811 and the first ventilation hole 812 being provided on inner layer net ontology 811, In the present embodiment, the first ventilation hole 812 assumes diamond in shape, the noise generated when reducing oil smoke across internal layer oil network 81, not by size Uniform grease molecules water conservancy diversion is at 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 ontology 81 is preferably 0.3~1mm, the length of the first ventilation hole 812 is 1.0~2.0mm, width (in diagonal line compared with Short one length) be 1.0mm~2.0mm, the 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 ontology 821 and the second ventilation hole 822 being provided on outer layer net ontology 821.Outside Layer net ontology 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 smoothly enters range hood, utmostly reinforces the fume-exhausting ability of range hood.Second ventilation hole 822 be 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 two kinds of ventilation holes is of different sizes, and be staggered part increase Oil smoke traps area, and lap can then block the oil droplet dripped inside range hood, so that oil droplet will not directly drip It falls on hearth.

The oil smoke in negative suction area is first contacted with oil network 8 before entering air intake passage, 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 staggered two layers of oil network The separating for several times elaioleucites such as condensation, rectification, shock are formed, oil smoke absorbs cleaner.

Rotary sieve 6 includes the Dropbox 61 for crossing filtering fume and the motor 62 for driving Dropbox 61 to rotate.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 Through slot, at least two layers of 611 array of slot radially can be set on the surface of Dropbox 61, since oil smoke is entering draught fan impeller Flue gas is influenced in the concentration distribution of circumference by the revolving speed of blower, the type 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 practical flue gas after specific selected blower fan system Distribution character is spent, can more freely be distributed every layer of slot 611 to optimal width dimensions, without the shadow by other layer of slot 611 It rings, as much as possible promotion filter effect.

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

The top of Dropbox 61 is arranged in motor 62, 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 and right side wall be connected and fixed, as a result, complete rotary sieve 6 installation.

The bottom end of cabinet 2 extends at the air inlet 11 of exhaust fume collecting hood 1, and sets in cabinet 2, below rotary sieve 6 It is equipped with oil drain pan 7, referring to Fig. 7, oil drain pan 7 includes disk ontology 71 and diversion division 72, shape, size and the cabinet 2 of disk ontology 71 Cross-section adaptation, be arranged in cabinet 2 to horizontal or almost horizontal, and the edge of disk ontology 71 be located at cabinet 2 lower section, And exceeds the bottom edge of cabinet 2 and be supported below 11 edge of air inlet of exhaust fume collecting hood 1.The oil dripped in cabinet 2 as a result, The grease that rouge, blower fan system 4 are thrown away can drop on disk ontology 71.Each side in the air duct 25 of cabinet 2 is inclined, facilitates Oil under blower fan system 4 is got rid of is imported on disk ontology 71.

The intermediate of disk ontology 71 forms opening 711, and disk ontology 71 extends a distance up to form water conservancy diversion at opening 711 The Dropbox 61 of portion 72, diversion division 72 and rotary sieve 6 is opposite, and the cross section of opening 711 and diversion division 72 may be circle, and And the edge of Dropbox 61 can exceed diversion division 72, so that the grease that rotary sieve 6 is thrown away can also drop on disk ontology 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 blower 41 and the second ternary blower 42, two ternary fan parallel-connection settings.By using 3 d impeller, compared to centrifugation Flow efficiency can be significantly increased in blower, improve air quantity.

The first 3 d impeller 412 that first ternary blower 41 spiral case 411 and be arranged in the first spiral case 411 including first, The second 3 d impeller 422 that second ternary blower 42 spiral case 421 and be arranged in the second spiral case 421 including second.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 Side far from the second spiral case 421, two back-to-back settings of spiral case, so that two ternary blowers 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 in blower fan system 4 from arranged on left and right sides respectively.The first oil smoke channel 441, the first oil smoke are formed in first spiral case 411 The top in channel 441 forms the first air outlet 414, forms the second oil smoke channel 442, the second oil smoke channel 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, as the applicant application No. is 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 connect 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 connect with the second 3 d impeller 422 and the second 3 d impeller 422 is driven to operate.Thus it may make Two ternary blowers 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, improves smoke absorption effect.The center of first 3 d impeller 412 and 25 entrance of air duct 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 duct maintains a certain distance, which is 1~2 times of the diameter of the second 3 d impeller 422, impeller center and air duct The distance of 25 entrances has to be larger than impeller diameter, and the rotary sieve 26 of such 25 inlet of air duct can just play a role, but also not 2 times of diameters can be greater than, otherwise apart from negative pressure region apart from too far.

Above-mentioned two ternary blower can use same structure, and this arrangement, blower fan system overall volume It is smaller, the original size of cabinet 2 can not changed, air quantity can made double again in the case where keeping higher wind pressure, improved and inhale Oil smoke efficiency.Two air inlets are respectively facing arranged on left and right sides, so that the negative pressure region area of two side peripheries increases, are 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 51 of outlet housing 5 covers the first of the first ternary blower 41 It first air outlet 414 of spiral case 411, the second air outlet 424 of the second spiral case 421 of the second ternary blower 42 and is connected to. In the present embodiment, outlet housing 5 includes cover 51, the deflector being arranged in cover 51.Cover 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 greater than the mouth of second end 512 Diameter is open and is gradually reduced from the position close to blower fan system 4 to far from the position of blower fan system 4, oil smoke air-flow is from first end 511 enter in cover 51, and leave cover 51 from second end 512 and enter the external pipe connecting with outlet housing 5.

Deflector includes the first deflector 521 and the second deflector 522, first end of first deflector 521 from cover 51 511 extend to second end 512, and the first deflector 521 is at the first end 511 of cover 51, with the first ternary blower 41 First edge of the second air outlet 424 close to the second ternary blower 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 51, with the second ternary blower 42 Second edge 425 (left side edge of the second air outlet) of the first air outlet 414 close to the first ternary blower 41 at 424 is right It answers.Each deflector has the width extended in front and rear direction.First deflector 521 by first end 511 to second end 512, Be increasingly towards the second deflector 522 (to the right) inclination, 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 from 51 bottom of cover Between position extend.First deflector 521 is mutually connected with the top (close to the second end 512 of cover 51) of the second deflector 522 It connects, it is preferred that the junction of two deflectors is in rounding off, to guide air-flow smooth transition.

The front and rear sides side 5211,5212 of first deflector 521 is connect with the inner sidewall of cover 51 always, the second water conservancy diversion The front and rear sides side 5221,5222 of plate 522 is connect with the inner sidewall of cover 51 always.Thus cover 51 is divided into cover 51 The first diffusion runner 531,51 inner sidewall of cover between inner sidewall and the first deflector 521 and between the second deflector 522 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 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 blower 42 at the first end 511 of cover 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 greater 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 greater than the The muzzle velocity of two diffusion runners, 532 bottom.

By the way that above-mentioned deflector is arranged, so that be connected to the first air outlet 414 of the first ternary blower 41 first expands The air velocity of runner 531, the second diffusion runner 42 being connected to the second air outlet 424 of the second ternary blower 42 is pressed to connect each other Closely.This guide functions of outlet housing 5 are conducive to exit gas and form laminar flow, enter external pipe after forming laminar flow, avoid Air-flow is directly entered with turbulent condition the defect of external pipe after coming out from spiral case, also avoid the air outlet of two ternary blowers Strong friction and shock when air-flow mixes improves efficiency so that flow losses be greatly lowered.

It is densely covered with sound-absorbing hole 54 on first deflector 521 and/or the second deflector 522, advantageously reduces outlet noise.For Further decrease noise, can also space between the first deflector 521 and the second deflector 522 partition 55 is set so that Space between first deflector 521 and the second deflector 522 is divided at least two resonant cavities 551.Alternatively, can also be Acoustical cotton is arranged in space between first deflector 521 and the second deflector 522.Alternatively, partition 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, can make the most strong negative pressuren zone face of blower fan system 4 left The air-flow that right two sides enter, and double air intake passages on smoke-collecting plate 3 can make the air-flow of lower section entrance from left and right sides negative pressure Strongest 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 rectified and be guided to air-flow, and rotary sieve 6 is conducive to gas Stream is evenly distributed in air inlet so that into the oil smoke in air duct 25 can respectively enter corresponding blower it is corresponding into Wind is intracavitary, gas individual flow in each air-inlet cavity, avoids the occurrence of showing of tacking between the air inlet of two adjacent blowers 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 blower 41 and second ternary blower 42 share the same spiral case 44, i.e. the first 3 d impeller 412 and the two or three of the first ternary blower 41 Second 3 d impeller 422 of first blower 42 is co-located in the same spiral case 44.

It is provided with mounting plate 45 between two 3 d impellers, to separating two 3 d impellers the two of mounting plate 45 Side, mounting plate 45 extend to the top of spiral case 44, so that two 441 Hes of independent first oil smoke channel will be separated into spiral case 44 Second oil smoke channel 442.Driving motor 43 is passed through from mounting plate 45 and is connected and fixed with mounting plate 45.

In the present embodiment, outlet housing 5 is only including cover 51 and the deflector 56 being arranged in cover 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 mounting plate of deflector 56 It is corresponding, so that cover 51 is divided into independent first diffusion runner 531 corresponding with the oil smoke channel 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, cabinet (2) and lampblack filter including exhaust fume collecting hood (1), setting above exhaust fume collecting hood (1), It is formed with air inlet (11) on the exhaust fume collecting hood (1), is formed with air duct (25), the lampblack filter in the cabinet (2) Including being arranged oil network (8) at the air inlet (11), the oil network (8) integrally in it is up big and down small, by air inlet (11) The taper extended downwardly is provided with blower fan system (4) in the cabinet (2), it is characterised in that: the blower fan system (4) includes The the first ternary blower (41) and the second ternary blower (42) being arranged in parallel, the lampblack filter further include being arranged described The rotary sieve (6) of interior, air duct (25) the inlet of cabinet (2).

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 set, the internal layer oil network (81) includes inner layer net ontology (811) and opens up The first ventilation hole (812) on inner layer net ontology (811), the outer layer oil network (82) include outer layer net ontology (821) and open The second ventilation hole (822) being located on outer layer net ontology (821), first ventilation hole (811) is less than the second ventilation hole (821), first ventilation hole (811) and the second ventilation hole (821) interlaced arrangement make 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 described in any one of claim 1 to 3, it is characterised in that: the rotary sieve (6) includes using In the Dropbox (61) of filtering fume excessively and the motor (62) for driving Dropbox (61) to rotate, the output shaft of the motor (62) (621) it is inserted into the center of Dropbox (61) and is connected and fixed, the motor (62) is connected by electric machine support (622) and cabinet (2) Connect fixation.

5. range hood according to claim 4, it is characterised in that: offer 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 duct (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), be located at rotation Turn to be provided with oil drain pan (7) below strainer (6), the oil drain pan (7) includes disk ontology (71), the shape of the disk ontology (71) The cross-section adaptation of shape, size and cabinet (2), and the edge of disk ontology (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: the intermediate of the disk ontology (71) forms opening (711), the disk ontology (71) extends a distance up to form diversion division (72), the diversion division at opening (711) (72) relatively with rotary sieve (6), 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 blower (41) Including the first 3 d impeller (412) and the first air inlet (413), the second ternary blower (42) includes the second 3 d impeller (422) and the second air inlet (423), on oil smoke flow path, second air inlet (413) and the first air inlet (413) Position is equivalent, and first air inlet (413) and the second air inlet (413) are set side by side and are respectively facing cabinet (2) Arranged on left and right sides.

10. range hood according to claim 9, it is characterised in that: the first ternary of the first ternary blower (41) Impeller (412), the second ternary blower (42) the second 3 d impeller (422) 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 blower (41) further includes first Spiral case (411), in the first spiral case (411), the second ternary blower (42) is also wrapped for the first 3 d impeller (412) setting It includes the second spiral case (421), the second 3 d impeller (422) setting is 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), is formed with the first oil smoke channel in first spiral case (411) (441), the top of first oil smoke channel (441) forms the first air outlet (414), is formed in second spiral case (421) There is the second oil smoke channel (442), the top in second oil smoke channel (442) forms the second air outlet (424).

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

13. range hood according to claim 11 or 12, it is characterised in that: further include being arranged in 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. 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 (51) in hollow tube-shape, the cover (51) have it is opposite, The first end (511) and second end (512) of opening, the bore of the first end (511) are greater than the bore of second end (512), institute State and be provided with the first deflector (521) and the second deflector (522) in cover (51), each deflector from cover (51) first It holds (511) to extend to second end (512), forms first between first deflector (521) and the inner sidewall of cover (51) and expand It presses runner (531), forms the second diffusion runner (532), institute between second deflector (522) and the inner sidewall of cover (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 (51) to Two ends (512) are gradually reduced, the first diffusion runner (531) at the first end (511) of cover (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 (51) with The second air outlet (424) of second ternary blower (42) is corresponding.