CN207407410U - 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 the exhaust fume collecting hood, air passage is formed in the cabinet, the lampblack filter includes being arranged on the oil network of the air inlet, the oil network is integrally in taper that is up big and down small, being extended downwardly by air inlet, it is characterised in that：The lampblack filter further includes the rotary sieve for being arranged on interior, air passage the inlet of the 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, therefore both combine can effectively rectification with guiding air-flow, reduce the turbulent flow and sinuous flow in air-flow, smooth-going air-flow is formed, reduces the whirlpool that air-flow is formed before blower fan system is entered.

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, it is characterised in that：The lampblack filter further include be arranged in the cabinet, air passage Inlet rotary sieve.

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.

It is dripped for ease of undertaking along case side wall, the grease that wind turbine is thrown away, the oil drain pan includes disk body, the disk The cross-section adaptation of the shape of body, size and cabinet, and the edge of disk body is located at the lower section of cabinet and extends cabinet Bottom edge and be supported below the air inlet edge of exhaust fume collecting hood.

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.

In line, negative pressuren zone concentration is directly inhaled to realize, helps to reduce the resistance of ducting, smoke evacuation is more smooth, in the cabinet It is provided with blower fan system, the blower fan system is ternary wind turbine, and the air inlet of the blower fan system forward and is in and level side To being obliquely arranged in the cabinet.

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, therefore the two combination can be effectively whole Stream reduces turbulent flow and sinuous flow in air-flow, forms smooth-going air-flow, reduce air-flow and formed before blower fan system is entered with guiding air-flow Whirlpool；By setting double-deck oil network, since the ventilation hole of two layers of oil network shifts to install, the oil of intracavitary drippage can be blocked Drop so that oil droplet will not be dropped onto directly on hearth, by limiting the arrangement mode of internal layer mesh and the size of mesh, mesh Between spacing, ensure that the incoming air area of oil network, outer layer oil network plays guide functions for soot gas so that soot gas are more Swimmingly enter range hood；Rotary sieve is arranged at the tunnel inlet in cabinet, oil smoke can be caused with relatively low stream For speed 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, from And reach preferable 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 that the range hood of the utility model embodiment hides the schematic diagram of cabinet protecgulum；

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.

Specific embodiment

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

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.

In the present embodiment, blower fan system 4 is ternary wind turbine, and the prior art, such as Application No. can be used in ternary wind turbine 201310418009.X Chinese patent disclosed in.Blower fan system 4 can be single ternary wind turbine, two ternarys in parallel Wind turbine or the ternary wind turbines of two series connection, since ternary wind turbine has, compact-sized, size is relatively small, fan efficiency and wind pressure The characteristics of high, the suction gradient that can be generated is big, can be so that smoking efficiency is significantly promoted.

In the present embodiment, the air inlet 41 of ternary wind turbine 4 is obliquely placed in cabinet before, and in horizontal direction In 2.Ternary wind turbine 4 is so tilting, realizes and directly inhales in line, negative pressuren zone concentration, helps to reduce the resistance of ducting, smoke evacuation is more suitable Freely.2 top of cabinet is provided with the outlet housing 5 being connected with the air outlet of blower fan system 4, so as to by outlet housing 5, arrange oil smoke Enter to common flue.

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.

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, thus the two combine can effectively rectification and guiding air-flow, reduce turbulent flow in air-flow and Sinuous flow forms smooth-going air-flow, reduces the whirlpool that air-flow is formed before blower fan system 4 is entered.

Claims (10)

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, it is characterised in that：The lampblack filter further include be arranged in the cabinet (2), air passage (25) Inlet rotary sieve (6).

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).

8. range hood according to claim 7, it is characterised in that：The oil drain pan (7) includes disk body (71), described The cross-section adaptation of the shape of disk body (71), size and cabinet (2), and the edge of disk body (71) is located at cabinet (2) Simultaneously extend the bottom edge of cabinet (2) and be supported below air inlet (11) edge of exhaust fume collecting hood (1) in lower section.

9. range hood according to claim 8, 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).

10. range hood described in any one of claim 1 to 3, it is characterised in that：It is provided in the cabinet (2) Blower fan system (4), the blower fan system (4) are ternary wind turbine, and the air inlet (41) of the blower fan system (4) is facing forward and is in It is obliquely arranged in horizontal direction in the cabinet (2).