CN106765393A - A kind of range hood - Google Patents

A kind of range hood Download PDF

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Publication number
CN106765393A
CN106765393A CN201611207875.4A CN201611207875A CN106765393A CN 106765393 A CN106765393 A CN 106765393A CN 201611207875 A CN201611207875 A CN 201611207875A CN 106765393 A CN106765393 A CN 106765393A
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CN
China
Prior art keywords
air
exhaust apparatus
air outlet
servicing unit
range hood
Prior art date
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Granted
Application number
CN201611207875.4A
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Chinese (zh)
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CN106765393B (en
Inventor
陈浩辉
李斌
李志峰
边乐超
黄友根
茅忠群
诸永定
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Ningbo Fotile Kitchen Ware Co Ltd
Original Assignee
Ningbo Fotile Kitchen Ware Co Ltd
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Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201611207875.4A priority Critical patent/CN106765393B/en
Publication of CN106765393A publication Critical patent/CN106765393A/en
Application granted granted Critical
Publication of CN106765393B publication Critical patent/CN106765393B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2078Removing cooking fumes movable
    • F24C15/2085Removing cooking fumes movable adjustable in height

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

The invention discloses a kind of range hood, including exhaust fume collecting hood and the interior fan shroud for setting blower fan, air inlet is offered on the exhaust fume collecting hood, it is characterised in that:Along airflow direction, the upstream of the air inlet is provided with servicing unit, the servicing unit includes the exhaust apparatus extended around an axis, the exhaust apparatus include the air outlet that air storing cavity is connected with air storing cavity, and the air outlet is arranged so that the air-flow that exhaust apparatus spray forms the flow field of rotation or the air outlet is arranged so that the air-flow that exhaust apparatus spray is formed by upstream toward downstream, the Ejection flow field towards axis.By the servicing unit that eddy flow or injection are set in air inlet upstream, centrifugal blower in fan shroud is drawn up under the collective effect of power, the distance with range pot face is drawn in, improves cigarette Tobacco Control and antijamming capability, inherently solve the problems, such as that top-sucking kitchen ventilator fume-exhausting ability is not good.

Description

A kind of range hood
Technical field
The present invention relates to a kind of cooking apparatus, especially a kind of range hood.
Background technology
Range hood has turned into one of machine for kitchen use equipment indispensable in Modern Family, is cooked for discharging cooking stove Produced oil smoke in journey.Usual range hood includes top suction type and side-suction type, and the range hood of top suction type is due to clean and tidy light Ingeniously, the advantages of occupying little space, and it is in an increasingly wide range of applications.Top-sucking kitchen ventilator generally includes exhaust fume collecting hood, is located at Blower housing on exhaust fume collecting hood, is provided with centrifugal blower in blower housing.
The range hood of conventional top suction type, it is a kind of as disclosed in the Chinese patent of Application No. 201410704669.9 to inhale Lampblack absorber, including the exhaust fume collecting hood with inlet scoop, are arranged on the wind cabinet on exhaust fume collecting hood top, are arranged on the wind with spiral case in wind cabinet Machine, negative pressure is formed by the effect of blower fan, while the gas in wind cabinet is discharged so as to outside oil smoke is sucked in wind cabinet, Realize the purpose of fume-exhausting.
Above-mentioned this top-sucking kitchen ventilator have the advantages that it is classical attractive in appearance, but also because of the limitation of its installation dimension, away from From the requirement for height 650-750cm in kitchen range top face, and it is known with the increase for leaving inlet scoop distance, and flow velocity is decayed in quadratic power, Therefore very big influence is generated on smoke absorption effect, and anti-interference is poor, need further improvement.
The content of the invention
The technical problems to be solved by the invention are directed to the problem that above-mentioned prior art is present, there is provided one kind improves oil suction The range hood of cigarette efficiency.
The present invention solve the technical scheme that is used of above-mentioned technical problem for:A kind of range hood, including exhaust fume collecting hood and interior If the fan shroud of blower fan, air inlet is offered on the exhaust fume collecting hood, it is characterised in that:Along airflow direction, the air inlet it is upper Trip is provided with servicing unit, and the servicing unit includes the exhaust apparatus extended around an axis, and the exhaust apparatus include gas storage The air outlet that chamber connects with air storing cavity, the air outlet be arranged so that exhaust apparatus spray air-flow formed rotation flow field, Or the air outlet is arranged so that the air-flow that exhaust apparatus spray is formed by upstream toward downstream, the flow type pump with injection towards axis .
According to an aspect of the present invention, the servicing unit is eddy flow servicing unit, and the exhaust apparatus are in around described The ring-type that axis extends, the air outlet includes being arranged in inner side of the exhaust apparatus towards axis multiple, circumferentially-spacedly, described Air outlet extends along the direction of axis.
According to another aspect of the present invention, the servicing unit is eddy flow servicing unit, and the exhaust apparatus are in around institute State axis extension ring-type and from the tangential air intake of air storing cavity, the air outlet also in around axis extend ring-type, be arranged on institute State the upstream and/or downstream of air storing cavity so that the air-flow that air outlet sprays is formed towards upstream and/or the eddy flow in downstream.
According to another aspect of the present invention, the servicing unit is injection servicing unit, and the air outlet is formed in institute The end that exhaust apparatus are located relatively at upstream is stated, the air outlet has outlet, and the outlet is inclined towards downstream and to axis Tiltedly.
Preferably, the exhaust apparatus are in circular or oval ring-type or two spaced apart segmental arcs or two Spaced apart straightway, can form the injection air-flow for tilting upward.
Further, for ease of exhaust apparatus air-out, the servicing unit also includes guide duct and accessory fan, described to lead The two ends of airduct are respectively communicated with the air storing cavity of the exhaust apparatus and the air outlet of accessory fan.
To avoid influenceing the suction of oil smoke air-flow, the range hood also includes blower hood, and the blower hood is set Outside fan shroud, form interlayer between the blower hood and fan shroud, the accessory fan be arranged on the both sides of fan shroud and In the interlayer.
In order to neither influence the overall appearance of range hood, extension can downwards be expanded by negative pressuren zone again and lift fume-exhausting Effect, the range hood also includes the lowering or hoisting gear for driving servicing unit lifting.
Preferably, for ease of driving servicing unit lifting, the lowering or hoisting gear is electronic on the outside of fan shroud including being arranged on Push rod, the transmission bracket being connected between servicing unit and the end of electric pushrod, additionally, lowering or hoisting gear is not easy to be subject to grease Influence.
Preferably, for ease of the connection of lowering or hoisting gear and servicing unit, the transmission bracket is connected with guide duct.
Compared with prior art, the advantage of the invention is that:By in the upstream of air inlet, the auxiliary of eddy flow or injection is set Device is helped, the centrifugal blower in fan shroud is drawn up under the collective effect of power, draw in the distance with range pot face, raising is held together Cigarette Tobacco Control and antijamming capability, inherently solve the problems, such as that top-sucking kitchen ventilator fume-exhausting ability is not good.
Brief description of the drawings
Fig. 1 is the schematic diagram of range hood one embodiment of the invention;
Fig. 2 is the decomposition texture schematic diagram of the range hood of Fig. 1;
Fig. 3 is the servicing unit schematic diagram of the range hood of Fig. 1;
Fig. 4 is transverse direction (vertical with axis X) sectional view of the exhaust apparatus of the servicing unit in Fig. 3;
Fig. 5 is the close-up schematic view of the sectional view of Fig. 4;
Fig. 6 is longitudinal direction (parallel with axis X) schematic cross-section of the servicing unit in Fig. 3;
Fig. 7 is the cross-sectional view of the exhaust apparatus of the servicing unit in Fig. 3;
Fig. 8 is the schematic diagram of the exhaust apparatus of the servicing unit of second embodiment of the invention;
Fig. 9 is the schematic diagram (inversion) of the exhaust apparatus of the servicing unit of second embodiment of the invention;
Figure 10 is the longitudinal cross-section schematic diagram of the exhaust apparatus of Fig. 8;
Figure 11 hides the schematic diagram of madial wall for the section of Figure 10;
Figure 12 is the schematic diagram of the exhaust apparatus of the servicing unit of third embodiment of the invention;
Figure 13 is the schematic diagram of the exhaust apparatus of the servicing unit of four embodiment of the invention;
Figure 14 is 5th schematic diagram of embodiment of range hood of the invention;
Figure 15 is the servicing unit schematic diagram of Figure 14 range hoods;
Figure 16 is the partial sectional view of the range hood of Figure 14;
Figure 17 is partial cross section's enlarged diagram of the servicing unit in Figure 15;
6th schematic diagram of embodiment of Figure 18 range hoods of the invention;
Figure 19 is the servicing unit schematic diagram of the range hood of Figure 18;
Figure 20 is the sectional view of the servicing unit in Figure 19;
Figure 21 is 7th partial schematic diagram of the servicing unit of embodiment of range hood of the invention;
Figure 22 is the sectional view of the servicing unit in Figure 21.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one
Referring to Fig. 1~Fig. 6, a kind of range hood, including exhaust fume collecting hood 1, fan shroud 2 and blower hood 3, set in fan shroud 2 Blower fan is equipped with, preferred such as centrifugal blower, blower hood 3 is arranged on outside fan shroud 2, and between fan shroud 2 and blower hood 3 It is formed with interlayer.For purposes of illustration only, in this manual, " upstream " refers to the upstream of oil smoke flow path, " downstream " refers to oil smoke flow The downstream in dynamic path.
Air inlet 11 is offered on exhaust fume collecting hood 1, the lower section of air inlet 11, the i.e. upstream of air inlet 11 are provided with for improving suction The servicing unit 4 of oil smoke efficiency.Servicing unit 4 includes exhaust apparatus 41, guide duct 42 and the accessory fan for producing air-flow 43, guide duct 42 is used to for air-flow to be directed to exhaust apparatus 41 from accessory fan 43, and exhaust apparatus 41 guide guide duct 42 Air-flow sprays.
In the present embodiment, servicing unit 4 is eddy flow servicing unit, and exhaust apparatus 41 extend around axis X, so as to be formed Annular shape, oil smoke can pass through from the inner radial of annulus.Alternatively, exhaust apparatus 41 can also be oval ring-type.In this reality Apply in example, because range hood is top suction type, therefore axis X is to extend in vertical direction.Wherein, the first of exhaust apparatus 41 When end (lower end) is located at the upstream at second end (upper end) of exhaust apparatus 41, i.e. oil smoke flowing, exhaust apparatus 41 are first passed around First end, then leaves from the second end of exhaust apparatus 41.
Exhaust apparatus 41 include the lateral wall 411 and the madial wall 412 of ring-type of the ring-type extended around axis X, wherein interior The opposite exterior lateral sides wall 411 of side wall 412 is closer to axis X.With corresponding above, the first end position of lateral wall 411 and madial wall 412 In the upstream at lateral wall 411 and the end of madial wall 412 second.Pass through first end between the first end of lateral wall 411 and madial wall 412 Wall 415 is connected and closed, and is connected by the second end wall 416 between lateral wall 411 and the second end of madial wall 412 and closed, by This, lateral wall 411, madial wall 412, the first end wall 415 and the second end wall 416 form the air storing cavity 413 of ring-type, and oil smoke then may be used Pass through from the inner side of madial wall 412.Madial wall 412 from first end to the second end, be increasingly towards axis X inclination, madial wall 412 with The angle of axis X is α, 0 °≤α≤30 °, so that oil smoke is downstream inducted into the air inlet 11 of exhaust fume collecting hood 1.Exhaust apparatus 41 height (distance on the direction parallel with axis X) is h, 20mm≤h≤350mm, so as to both meet lifting fume-exhausting effect The requirement of rate, and the attractive in appearance of range hood is not influenceed.
Be formed with air outlet 414 on madial wall 412, air outlet 414 extends along axis X, and with above-mentioned air storing cavity 413 connections.In the present embodiment, air outlet 414 is formed by following modes:Madial wall 412 includes the dividing plate of multiple arcs 4121, above-mentioned multiple dividing plates 4121 are circumferentially arranged (around the direction of axis X), so as to constitute the madial wall 412 of ring-type.Often First end in the circumference of individual dividing plate 4121 radially-inwardly bends (towards axis X direction), so that each dividing plate 4121 is circumferential On the second end and the circumference of adjacent separator 4121 on first end between limit above-mentioned air outlet 414, i.e., two dividing plates Air outlet 414 is limited between the apparent surface of 4121 adjacent end portions.Thus, above-mentioned air outlet 414 and the circumference of madial wall 412 Shape has a certain degree, and each air outlet 414 is identical with the circumferential angle for being formed of madial wall 412.Thus, multiple air outlets 414 The air-flow of blowout forms the flow field (eddy flow) of rotation with circumferential component.Referring to Fig. 3, the air gas of the blowout of accessory fan 43 Stream is so that shown in filled arrows, oil smoke air-flow is with shown in hollow arrow.
Air outlet 414 can be with equidistantly distributed, it is also possible to not equidistantly distributed.Air outlet 414 has outlet 4143, outlet 4143 is the end of air outlet 414, and air-flow leaves the position before air outlet 414.The opening width d of air outlet 414, i.e., in outlet At 4143, the spacing (radially) between two apparent surfaces of the adjacent end portion of dividing plate 4121 is preferably, 1mm≤d≤10mm. If the opening width d of air outlet 414 is too small, windage is larger, is unfavorable for forming eddy flow, and if excessive, then flow velocity is smaller, together Sample also is unfavorable for forming eddy flow.
First end wall 415 is being formed with towards axis X inclination and to exhaust apparatus 41 second at madial wall 412 The guide face 4151 for extending is held, such that it is able to improve the flow regime of oil smoke, resistance is reduced.Guide face 4151 can for inclined-plane or Curved surface.
Guide duct 42 preferably two, compartment of terrain, is arranged symmetrically, and accessory fan 43 is located at outside fan shroud 2 respectively The left and right sides.Guide duct 42 can be spliced with multistage, it is also possible to be integrated.The first end and exhaust apparatus of each guide duct 42 Air storing cavity 413 in 41 is connected, and the position of connection is located between two air outlets 414.Second end of each guide duct 42 then from Exhaust fume collecting hood 1 is passed through, the interlayer being upwardly between fan shroud 2 and blower hood 3 and connected with the air outlet of accessory fan 43, this Planting set-up mode can also avoid influence of the oil smoke to accessory fan 43.Referring to Fig. 7, air storing cavity 413 is in the company with guide duct 42 When logical place extends to the direction away from guide duct 42, its sectional area gradually increases, so as to can ensure to spray air-flow from air outlet 414 Uniformity.By the setting of guide duct 42, the air-flow that accessory fan 43 blows out can be directed in air storing cavity 413, Jin Ertong Air outlet 414 is crossed to spray and form eddy flow.The eddy flow is provided the oil smoke air-flow that the passage from the middle of exhaust apparatus 41 enters and cut Xiang Li, the centrifugal blower (main air blower) in fan shroud 2 is drawn up producing spout effect under the collective effect of power, so as to draw in With the distance in range pot face, improve cigarette Tobacco Control and antijamming capability, inherently solve top-sucking kitchen ventilator fume-exhausting energy The not good problem of power.
Exhaust apparatus 41 lowered when both can be fixed suspension, or work, were received upwards when not working, from And the overall appearance of range hood is neither influenceed, the effect for extending and being lifted fume-exhausting can be downwards expanded by negative pressuren zone again.For It is easy to exhaust apparatus 41 to lift, is additionally provided with lowering or hoisting gear 5, lowering or hoisting gear 5 includes being arranged on the electricity of the outer left and right sides of fan shroud 2 Dynamic push rod 51 and the transmission bracket 52 being connected between the end of servicing unit 4 and electric pushrod 51, in the present embodiment, Electric pushrod 51 is extended downwardly, and transmission bracket 52 is connected to the top of guide duct 42.Thus, when electric pushrod 51 is released downwards When, one end that transmission bracket 52 is connected with guide duct 42 ramps up, so as to drive exhaust apparatus 41 to move upwards;Work as electric pushrod During 51 upward gathering, one end that transmission bracket 52 is connected with guide duct 42 is to decline, so as to drive exhaust apparatus 41 to move downward. Lowering or hoisting gear 5 can automatically control work according to the amount of oil smoke, and it is 100~300mm that it drives the scope that servicing unit 4 is lifted.
Embodiment two
Referring to Fig. 8~Figure 11, in the present embodiment, the difference with embodiment one is, the air-out of exhaust apparatus 41 Mouth extends around axis X, including is arranged in the first air outlet 4141 of upstream and second air outlet 4142 in downstream, so as to shape Into two eddy flows of different directions, smoke absorption effect is further improved.
Additionally, in the present embodiment, the first end wall 415 is not connected to the first end of madial wall 412, the first end wall 415 exists Upstream, away from axis X direction inclination extension a certain distance the first outer wall is formed at the first end of madial wall 412 4144, madial wall 412 in first end likewise, upstream, away from axis X direction inclination extension a certain distance form first Inwall 4145, the first outer wall 4144 is identical with angle with the incline direction of the first inwall 4145, in the first outer wall 4144 and first Above-mentioned first air outlet 4141 is limited between wall 4145, the first air outlet 4141 is annular in shape, from upstream toward downstream gradually to axle Line X shrinks.
Likewise, the second end wall 416 is also not connected to the second end of madial wall 412, the second end wall 416 is near madial wall The second outer wall 4146 downstream, towards axis X direction inclination extension a certain distance is formed at 412 second ends, madial wall 412 The second madial wall 4147 downstream, towards axis X direction inclination extension a certain distance is formed at the second end, the second outer wall 4146 is identical with angle with the incline direction of the second inwall 4147, is limited between the second outer wall 4146 and the second inwall 4147 The second air outlet 4142 is stated, the first air outlet 4142 is annular in shape, is gradually shunk to axis X from upstream toward downstream.
First air outlet 4141 and the second air outlet 4142 respectively with the air storing cavity between lateral wall 411 and madial wall 412 413 connections.First air outlet 4141 is (parallel with axis X away from the spacing in the middle of the end to exhaust apparatus 41 of the first end wall 415 Direction on distance) for the air outlet 4142 of h1,20mm≤h1≤350mm, second away from the second end wall 416 end to air-out Spacing (distance on the direction parallel with axis X) in the middle of device 41 for h2,20mm≤h2≤350mm, and h1+h2≤ 350mm。
The air-flow of the blowout of accessory fan 43 is tangentially entered air storing cavity 413 by guide duct 42, is obtained by air storing cavity 413 Accelerate to shrinking, enhance the rotatory power of internal gas flow, air-flow is again by the receipts between 413 to two air outlets of air storing cavity Contracting, flow velocity is further lifted, and is most sprayed through corresponding air outlet afterwards, and the air velocity of ejection is preferably in 1m/s~10m/ s。
The first distance piece 4171 is provided with first air outlet 4141, respectively with the inside and outside the first distance piece 4171 One inwall 4145 and the first outer wall 4144 are connected, so as to be oriented to the air-flow sprayed from the first air outlet 4141, while Ensure that the opening width of the first air outlet 4141 is consistent.First distance piece 4171 can in the circumferential be equally spaced from arrangement, also may be used Not think and be equally spaced from arrangement.First distance piece 4171 is in tilted layout in the circumferential, towards same direction, so that The air-flow sprayed from the first air outlet 4141 forms eddy flow upstream.The direction of the air-flow sprayed from the first air outlet 4141 is such as In Fig. 8 shown in arrow A.
The second distance piece 4172 is provided with second air outlet 4142, respectively with the inside and outside the second distance piece 4172 Two inwalls 4147 and the second outer wall 4146 are connected, so as to be oriented to the air-flow sprayed from the second air outlet 4142, while Ensure that the opening width of the second air outlet 4142 is consistent.Second distance piece 4172 can in the circumferential be equally spaced from arrangement, also may be used Not think and be equally spaced from arrangement.Second distance piece 4172 is in tilted layout in the circumferential, towards same direction, so that The air-flow sprayed from the second air outlet 4142 forms eddy flow downstream.First distance piece 4171 and the second distance piece 4172 incline Tilted direction is opposite.The direction of the air-flow sprayed from the second air outlet 4142 is in Fig. 8 shown in arrow B.
Angle between first air outlet 4141 and axis X is β, 0 °≤β≤90 °, to avoid towards axis X air-out, The air curtain of back taper is formed between the lower section of exhaust apparatus 41 and pan, so as to upset oil smoke air-flow;Second air outlet 4142 and axle Angle between line X is γ, 0 °≤γ≤30 °.
Embodiment three
Referring to Figure 12, in the present embodiment, the difference with embodiment two is, exhaust apparatus 41 only have formed to On eddy flow the first air outlet 4141, now the second end wall 416 will connect and close between lateral wall 411 and madial wall 412.
Example IV
Referring to Figure 13, in the present embodiment, the difference with embodiment two is, exhaust apparatus 41 only have formed to Under eddy flow the second air outlet 4142, now the first end wall 415 will connect and close between lateral wall 411 and madial wall 412.
Embodiment five
Referring to Figure 14~17, in the present embodiment, the difference with embodiment one is that servicing unit 4 is that injection is auxiliary Help device.Exhaust apparatus 41 are same to be formed around axis X extension, and its madial wall 412 is complete one piece.Air outlet 414 is formed In the first end of exhaust apparatus 41.
In the present embodiment, the first end wall 415 does not connect lateral wall 411 and madial wall 412, but including by lateral wall 411 first end bends the outer end wall 4152 of extension towards axis X, with certain radian, and by the first end of madial wall 412 The inner end wall 4153 of extension is bent away from axis X, with certain radian, outer end wall 4152 is located at the upstream of inner end wall 4153, And outer end wall 4152 and inner end wall 4153 are recessed towards upstream.Thus, outer end wall 4152 and the relative table of inner end wall 4153 Above-mentioned air outlet 414 is limited between face, air outlet 414 is in circumferential weld shape.The outlet 4143 of air outlet 414 is vertical with axis X Direction (being horizontal direction in the present embodiment) inclines and towards the second end of exhaust apparatus 41.The end of lateral wall 411 second position In the downstream at the end of madial wall 412 second, the second end wall 416 by madial wall 412 the second end laterally the second end of wall 411, by Gradually inclined towards axis X, such that it is able to play a part of water conservancy diversion.
For avoid the air outlet 414 from exhaust apparatus 41 from ejecting air-flow to the direction away from axis X outwardly, and The final air inlet 11 that cannot be introduced into exhaust fume collecting hood 1, the angle between outlet 4143 and the vertical direction of axis X is δ, 0 °≤δ≤ 90°;Madial wall 412 from first end to the second end, be increasingly towards axis X incline, inclined angle be ζ, 0 °≤ζ≤90 °;Second End wall 416 from the second end of madial wall 412 laterally the second end of wall 411, be increasingly towards axis X and incline, inclined angle is θ, 0 °≤θ≤ζ.The height of exhaust apparatus 41 is h, 20mm≤h≤350mm, and the height of madial wall 412 is h3,5mm≤h3≤ 200mm。
Likewise, distance piece can also be set in air outlet 414 to keep the opening width of air outlet 414 consistent, while Air-flow to spraying plays certain guiding and combing effect.
Air draught is blown out from air outlet 414 with high speed by accessory fan 43, is formed and is inclined towards axis X and court To the injection air-flow at the end of exhaust apparatus 41 second (downstream of oil smoke flow path), (preferred, the flow velocity of injection air-flow is preferred 1m/s~10m/s, more preferably 5m/s or so), entrainment surrounding oil smoke air-flow is upward together, simultaneously because cooking fume is flowed to On, the air pressure of the lower section of exhaust apparatus 41 can be reduced and produce barometric gradient, so as to guide oil smoke air-flow much below to add draw Emanate stream.Referring to Figure 16, the air draught of the blowout of accessory fan 43 is so that shown in filled arrows, oil smoke air-flow is with hollow arrow institute Show.
When actually used, servicing unit can be used alone, can also use in groups, and overall dimensions are no more than oil suction Cigarette machine shrouds profile.
Embodiment six
Referring to Figure 18~Figure 20, in the present embodiment, the difference with embodiment five is that exhaust apparatus 41 are not complete Annular shape, and it is two segmental arcs for being spaced, being arranged symmetrically, a guide duct 42 is connected with each segmental arc.
Embodiment seven
Referring to Figure 21 and Figure 22, in the present embodiment, the difference with embodiment six is that each section of exhaust apparatus 41 is not It is segmental arc, and is hollow straightway, a guide duct 42 is connected with each straightway.

Claims (10)

1. a kind of range hood, including exhaust fume collecting hood (1) and the interior fan shroud (2) for setting blower fan, offered on the exhaust fume collecting hood (1) into Air port (11), it is characterised in that:Along airflow direction, the upstream of the air inlet (11) is provided with servicing unit (4), the auxiliary Device (4) includes the exhaust apparatus (41) that extend around an axis (X), and the exhaust apparatus (41) include air storing cavity (413) and storage The air outlet (414) of air cavity (413) connection, the air outlet (414) is arranged so that the air-flow shape that exhaust apparatus (41) spray Into rotation flow field or the air outlet (414) be arranged so that exhaust apparatus (41) spray air-flow formed from upstream to Downstream, the Ejection flow field towards axis (X).
2. range hood as claimed in claim 1, it is characterised in that:The servicing unit (4) is eddy flow servicing unit, described Exhaust apparatus (41) in the ring-type extended around the axis (X), including multiple, circumferentially-spaced arrange by the air outlet (414) In exhaust apparatus (41) towards the inner side of axis (X), the air outlet (414) extends along the direction of axis (X).
3. range hood as claimed in claim 1, it is characterised in that:The servicing unit (4) is eddy flow servicing unit, described Exhaust apparatus (41) are in the ring-type extended around the axis (X) and from the tangential air intake of air storing cavity (413), the air outlet (414) also it is in around axis (X) ring-type for extending, the upstream and/or downstream that are arranged on the air storing cavity (413) so that air outlet (414) air-flow for spraying is formed towards upstream and/or the eddy flow in downstream.
4. range hood as claimed in claim 1, it is characterised in that:The servicing unit (4) is injection servicing unit, described Air outlet (414) is formed in the end that the exhaust apparatus (41) are located relatively at upstream, and the air outlet (414) is with outlet (4143), the outlet (4143) inclines towards downstream and to axis (X).
5. range hood as claimed in claim 4, it is characterised in that:The exhaust apparatus (41) are in circular or elliptical ring Shape or two spaced apart segmental arcs or two spaced apart straightways.
6. the range hood as any one of Claims 1 to 5, it is characterised in that:The servicing unit (4) also includes leading Airduct (42) and accessory fan (43), the two ends of the guide duct (42) are respectively communicated with the air storing cavity of the exhaust apparatus (41) (413) and accessory fan (43) air outlet.
7. range hood as claimed in claim 6, it is characterised in that:The range hood also includes blower hood (3), described Blower hood (3) is arranged on fan shroud (2) outward, and interlayer, the auxiliary are formed between the blower hood (3) and fan shroud (2) Blower fan (43) is arranged on the both sides of fan shroud (2) and in the interlayer.
8. range hood as claimed in claim 7, it is characterised in that:The range hood is also included for driving the auxiliary The lowering or hoisting gear (5) of device (4) lifting.
9. range hood as claimed in claim 8, it is characterised in that:The lowering or hoisting gear (5) is including being arranged on fan shroud (2) The electric pushrod (51) in outside, the transmission bracket (52) being connected between the end of servicing unit (4) and electric pushrod (51).
10. range hood as claimed in claim 9, it is characterised in that:The transmission bracket (52) is connected with guide duct (42).
CN201611207875.4A 2016-12-23 2016-12-23 Fume exhauster Active CN106765393B (en)

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Application Number Priority Date Filing Date Title
CN201611207875.4A CN106765393B (en) 2016-12-23 2016-12-23 Fume exhauster

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Application Number Priority Date Filing Date Title
CN201611207875.4A CN106765393B (en) 2016-12-23 2016-12-23 Fume exhauster

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CN106765393B CN106765393B (en) 2023-08-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109297060A (en) * 2018-10-25 2019-02-01 浙江欧琳生活健康科技有限公司 A kind of range hood with lift two fans
CN110360685A (en) * 2018-04-09 2019-10-22 宁波方太厨具有限公司 Air in kitchen regulating system
CN113915665A (en) * 2021-11-26 2022-01-11 杭州老板电器股份有限公司 Ejection smoke guide device and range hood

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CN109297060A (en) * 2018-10-25 2019-02-01 浙江欧琳生活健康科技有限公司 A kind of range hood with lift two fans
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