EP2276932A2 - Dispositif d'extraction d'air - Google Patents

Dispositif d'extraction d'air

Info

Publication number
EP2276932A2
EP2276932A2 EP08844189A EP08844189A EP2276932A2 EP 2276932 A2 EP2276932 A2 EP 2276932A2 EP 08844189 A EP08844189 A EP 08844189A EP 08844189 A EP08844189 A EP 08844189A EP 2276932 A2 EP2276932 A2 EP 2276932A2
Authority
EP
European Patent Office
Prior art keywords
air
fan
flow
air flow
guide vanes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08844189A
Other languages
German (de)
English (en)
Inventor
Hans-Herrman Boiting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BERLING GmbH
Original Assignee
BOITING RUTH
BOITING RUTH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOITING RUTH, BOITING RUTH filed Critical BOITING RUTH
Publication of EP2276932A2 publication Critical patent/EP2276932A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps

Definitions

  • the present invention relates to an air exhaust device having a suction port, an air duct and an exhaust port.
  • the object is achieved for a generic Beerabsaugvorraum by the lying between the suction port and the exhaust port air duct is designed so that the air flow is guided from the intake to a rotating driven fan, the air flow between the air blades passes through and downstream behind the fan several Guide vanes in the air duct Channel are arranged, which cause by their shape design a directional deflection of the exiting the fan air flow.
  • the design of the air duct according to the invention makes it possible to deposit the suspended particles, in particular, where the air moving in the air stream has its highest flow velocity and therefore the centrifugal forces which are used to separate the suspended particles are greatest.
  • axial or radial fans are suitable as a fan wheel, wherein any type of impeller shape, for example with backward or forward curved or radial end blades, is possible.
  • the guide vanes may be arranged so that the air flow exiting the fan wheel flows around them on their front and rear sides. According to a preferred embodiment, they have a flat cross-sectional profile which has a curved shape pointing in the direction of deflection.
  • the guide vanes may be shaped such that the air flow exiting from the guide vanes has a flow direction at least approximately radial to the fan wheel, in the transverse direction to the direction of rotation of the fan wheel
  • the air duct is designed so that the air flow flows through the fan in the radial direction from the inside out and the vanes are arranged in particular circular around the outer periphery of the fan around.
  • This design is advantageous because in this solution, the air flow of the sucked air is accelerated from the inside to the outside and on the outer circumference of the fan more vanes can be placed with a larger Monabscheide Scheme than in the inner region of the fan.
  • the airflow flowing into the fan wheel can be well focused.
  • the sucked by the fan air flow has comparatively high flow velocities, which makes this is particularly suitable to specifically suck cooking fumes, without that cooking fumes can flow past the Lucasabsaugvorraum.
  • the guide vanes are arranged stationary.
  • the fixed arrangement results in defined flow conditions and a simple basic structure of the air suction device. The noise is still acceptable.
  • the stationary vanes convert the velocity of air flowing from the impeller into pressure. By means of the additional deflection of the air flow through the guide vanes, suspended particles contained in the air stream are deposited on the surface of the guide vanes in this area.
  • the vanes can also be mounted on an actively or passively driven rotatable wheel, whereby the pressure and speed ratios of the air flow change accordingly.
  • the air duct leads the air flow after the passage of the guide vanes of the exhaust opening. After the suspended particles have been separated from the air stream, the extracted air can be fed directly to the exhaust port to minimize pressure and / or velocity losses of the air flow and manufacturing costs of the air suction through unnecessarily long and tortuous air supply channels.
  • the fan and / or the vanes are removable and removable from the air extraction device. After dismantling and removal of these components from the air extraction, they can be easily cleaned, especially by setting in a dishwasher. Furthermore, on the underside of the air suction device, a collecting device which is detachably connected to the Heilabsaufvorraum. From the air blades of the fan wheel and / or from the guide vanes - A - these suspended particles can drop or fall by gravity into the catcher, where they can then be easily removed after loosening the catcher of the Heilabscheidevortechnisch in a cleaning process.
  • the fan impeller elements are preceded by the sucked by the fan air flow can be deflected.
  • air guide elements come, for example, beads around which the incoming air flow is guided around, and / or air guide elements, which have baffles on which suspended particles can precipitate, into consideration.
  • the suction opening is covered by an engagement protection, which leaves at its edge and / or distributed over its surface flow openings through which the air flow can flow through to the fan.
  • the anti-tamper protection prevents a person from reaching the area of the rotating fan wheel with his or her fingers in order to exclude possible injuries when using the air suction device. If the protection is designed as a collecting tray for condensate and / or separated suspended particles, it fulfills a dual function. It should be detachably connected to the rest of the air extraction device in order to be able to carry out cleaning work easily and quickly.
  • FIG. 1 shows a longitudinal sectional view of an air suction device only with
  • FIG. 2 shows a cross-sectional view of the air suction device shown in Fig. 1 from a top view with drawn therein direction vectors of the air flow
  • FIG. 3 shows a longitudinal sectional view of an air suction device in which the fan impeller elements and an engagement protection are arranged upstream and the flow direction of the air flow is indicated by arrows,
  • FIG. 5 shows a three-dimensional view of an air suction device obliquely from below with a partial insight into the components therein
  • Fig. 6 a three-dimensional view of an air extraction device obliquely from above with a partial insight into the components therein.
  • Fig. 1 is a longitudinal sectional view of a Lucasabsaugvorraum 2 is shown.
  • the intake opening 4 located in the exemplary embodiment on the underside and the exhaust opening 6 located on the upper side can be seen.
  • the air suction device 2 is a fan 8, which is provided with air blades 10.
  • the fan 8 is driven by a motor 12.
  • an air flow is generated with the air blades 10, which passes through the suction port 4 in the Vietnameseabsaugvorraum 2, the fan 8 passes between the air blades 10, then guided between the guide vanes 14 and through the exhaust port 6, the Heilabsaugvorraum second leaves again.
  • the thus defined, between suction port 4 and exhaust port 6 lying air duct is indicated in the cross-sectional view in Fig. 1 in its course through the dotted line of the air flow.
  • the guide vanes 14 are fixedly mounted in the Lucasabsaugvorraum 2, but they can also be arranged to be movable.
  • the air flow which is passed through the fan 8, as seen in the flow direction at the end of the air blades 10 its highest speed. With this speed, the air flow enters the effective range of the guide vanes 14.
  • the speed of the air flow in the area of the guide vanes 14 decreases, but the pressure increases.
  • the guide vanes 14 are closed upwards and downwards by a corresponding cover. Between two adjacent guide vanes 14 results in this way, a flow channel closed on the other side, through which the air flow generated by the air blades 10 must flow.
  • an air guide space 16 is provided through which the air flow of the exhaust opening 6 can be fed.
  • the air guiding space 16 is arranged above the fan wheel 8.
  • annular gap 18 which surrounds the guide vanes 14 annular and in which the emerging from the space between the vanes 14 air flow in the direction of the air guide space 16 is deflected.
  • the air flow flows through the fan 8 in the radial direction from the inside to the outside.
  • the vanes 14 are arranged in a circle around the outer circumference of the fan 8 around.
  • the air blades 10 of the impeller 8 and the guide vanes 14 are arranged in the embodiment in a plane, so that there is no deflection of the air flow into another plane in the transition of the air flow from the air blades 10 in the region of the vanes 14 into it. Due to the even transition of the air flow from the fan 8 with its air blades 10 in the region of the guide vanes 14 in energy and speed losses are avoided.
  • This also results in a comparatively flat design of the air suction device 2, since the air duct has an overall flat channel cross-section and thus an overall very flat shape.
  • the deflection of the air flow behind the guide vanes 14 acts pressure- increasing the space between the guide vanes 14, whereby the speed of the air flow in the region of the guide vanes 14 additionally braked and the segregation of the suspended particles is additionally promoted from the air flow.
  • FIG. 2 shows a cross-sectional view of the air suction device depicted in FIG. 1 along the line A-A indicated there.
  • the course of the air flow L through the fan 8 and the guide vanes 14 is clearly visible.
  • the air flow reaches the effective range of the air blades 10 that are capable of rotating with the fan wheel 8, by means of which the air flow is accelerated.
  • the guide vanes 14 Directly adjacent to the effective region of the air blades 10 are the guide vanes 14, which receive the air flow emerging from the fan wheel 8 and deflect it in an arc. Due to the shape of the guide vanes 14 shown in FIG. 2, the air flow emerging from the fan 8 at the discharge end of the guide vanes 14 receives an approximately radial flow direction relative to the axis of rotation of the fan wheel 8.
  • the front edges of the vanes 14 seen in the flow direction are directed at least approximately in the direction of the exiting the fan 8 air flow, while the ends of the vanes 14 in relation to the axis of rotation of the fan 8 in pointing radially outward.
  • the airflow discharged by the fan 8 is rectified at least approximately in the radial direction, so that it only needs to be deflected in the annular gap 18 upwards.
  • Fig. 3 is a longitudinal sectional view of an air suction device 2 is shown, in which in the region of the intake opening 4, an additional air guide element 20 and an engagement guard 22 are arranged.
  • the air guide element 20 serves the purpose of redirecting the intake air drawn in through the intake opening 4 in the direction of the air blades 10 of the fan wheel 8.
  • the air guide 20 may also be used to more evenly distribute the incoming air into the fan 8 over the height of the impeller 8, as would be the case without an air guide 20.
  • the surfaces of the air guide element 20 can already be used to collect suspended particles that separate due to the directional deflection of the air flow which inevitably results in the region of the air guide element 20. Since the suspended particles accumulating on the surface of the air guiding element 20 can form droplets which drip off from the air guiding element 20, it makes sense to form the engaging protection 22 as a kind of collecting device in which the droplets can be collected.
  • Fig. 4 is a three-dimensional view of an air guide element 20 is shown, as it could look like an embodiment of the invention.
  • the air guide 20 has a support structure 24, are secured to the rings 26 spaced from each other, which delimit between them feed channels to the air blades 10 of the fan 8.
  • the rings 26 each have a free flow cross-section 28, which is smaller in the flow direction. By reducing the flow cross-section in the flow direction, an approximately uniform flow of the air blades 10 over the height is achieved.
  • Fig. 4 indicate the course of the air flow arrows, the air flow in the region of the rings 26 is sharply deflected. As a result, 26 suspended particles can accumulate on the surfaces of the rings and adhere there.
  • a bead 30 is shown, which can be embodied peripherally around the intake opening 4 and reinforces the deflection of the air flow in the region of the intake opening 4.
  • the shape, size and configuration of the air guiding elements 20 it should be noted that, as far as possible, an acceptable compromise is achieved between the desired separating effect of suspended particles and the power loss caused by the multiple deflection. Because of the particular speeds in the transition region of the air flow from the impeller 8 to the guide vanes 14, it can be assumed that there the more significant proportion of suspended particles is separated from the air stream flowing through. Because of the high separation efficiency in this area, it is advantageous to provide in the conveying section of the air duct, which is upstream of the effective range of the impeller 8, only one type of pre-separation of suspended particles, which are comparatively easily removable from the air stream, by the downstream separation elements, however, recognizable be relieved of a part of the otherwise accruing pollution load.
  • the air guiding elements 20 arranged upstream of the fan wheel 8 in such a way that particularly heavy or long-chain molecules of suspended particles are deposited there.
  • the spoilers 20 may be configured to collect fats carried in the airflow while the airfoils 14 downstream of the fan 8 are configured to collect lighter oil particles from the airflow.
  • a grading of the separation efficiency by the fan upstream and downstream separation members can be particularly advantageous in terms of the cleaning ability of the respective components. If a pre-separation of Suspended particles is provided in front of the fan 8, a part of the suspended particles is already removed there from the air flow and accumulated. For the cleaning of the air suction 2 of trapped suspended particles, it may then be sufficient to clean at shorter intervals, only the air guide 20 and the engaging contactor 22, while the more difficult to disassemble components such as the fan 8 with the air blades 10 or the vanes 14 because of by the pre-separation lower amount of dirt must then be cleaned less frequently. In order to simplify the cleaning of the relevant components, it is advantageous if they are detachably connected to the Lucasabsaugvorraum 2, in particular with snap, snap, bayonet or clamp closures or the like.
  • the engagement protector 22 is designed so that it is not possible to reach with the fingers through the suction port 4 in the rotation range of the air blades 10. This design of the engagement protection 22 avoids injury to persons during operation of the air extraction device 2.
  • the engagement contactor 22 is designed and mounted so that at its edge still flow openings 32 result, through which the air flow can flow from the outside to the fan.
  • Fig. 5 is a three-dimensional view of a Lucasabsaugvorraum 2 seen obliquely from below.
  • the air suction device 2 has an outer housing 34, which is shown partially broken away to illustrate the device according to the invention in Fig. 5.
  • the region of the intake opening 4 is clearly visible, in which an air-conducting element 20 is inserted in the exemplary embodiment shown.
  • the step-shaped graduation of the flow cross-sections 28 is clearly visible from the bottom view. Downstream of the spoiler 20 is the fan 8, the direction of rotation is indicated in Fig. 5 by an arrow.
  • FIG. 6 shows the air suction device 2 from a view obliquely from above with a partially broken housing 34.
  • the air flow passes through the annular gap 18 in the air guide space 16.
  • the partition between the fan 8 and the air guide 20 is not shown.
  • a partition between the fan 8, the guide vanes 14 and the air duct 16 is advantageous, however, to ensure an undisturbed flow of air from the fan 8 in the area between the vanes 14 into it. From the air duct 16 from the air flow can then enter the exhaust port 6.
  • the functional organs which guide the air flow from the suction opening 4 to the discharge opening 6 in the air suction device 2, together form the air duct, through which the air flow is passed through the air suction device 2.
  • the inventive design of the air duct a high efficiency can be achieved with a relatively low energy consumption.
  • the shape of the air blades provided with the blower type, and the location and shape of the vanes that are used the respective designs of the components must be optimized and adjusted to each other.
  • the air suction device 2 according to the invention may be provided with noise-reducing internals, such as sound insulation mats, sound-absorbing cavities and the like.
  • the components provided for the air suction device 2 may be made of suitable materials, such as, for example, inexpensive plastic injection molding, but also metals, such as aluminum or the like.
  • the air extraction device according to the invention can be used as a cooker hood in private or commercial kitchens use, but also in other applications, such as air purification in industrial manufacturing plants or in air conditioning systems for air purification or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif d'extraction d'air (2) comprenant une ouverture d'aspiration (4), un canal de guidage d'air et une ouverture d'évacuation (6). Selon l'invention, afin d'accroître la capacité de dépôt du dispositif d'extraction d'air, le canal de guidage d'air s'étendant entre l'ouverture d'aspiration (4) et l'ouverture d'évacuation (6) est conçu de sorte que le flux d'air provenant de l'ouverture d'aspiration (4) est guidé jusqu'à la roue de ventilation (8) pouvant être entraînée rotative, le flux d'air passant entre les ailettes (10) de la roue de ventilation, et plusieurs ailettes de guidage (14) étant situées dans le canal de guidage d'air en aval de la roue de ventilation (8), la forme de ces ailettes étant conçue pour provoquer une déviation du flux d'air sortant de la roue de ventilation (8).
EP08844189A 2007-10-29 2008-10-04 Dispositif d'extraction d'air Withdrawn EP2276932A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710051942 DE102007051942A1 (de) 2007-10-29 2007-10-29 Luftabsaugvorrichtung
PCT/EP2008/008401 WO2009056207A2 (fr) 2007-10-29 2008-10-04 Dispositif d'extraction d'air

Publications (1)

Publication Number Publication Date
EP2276932A2 true EP2276932A2 (fr) 2011-01-26

Family

ID=40490341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08844189A Withdrawn EP2276932A2 (fr) 2007-10-29 2008-10-04 Dispositif d'extraction d'air

Country Status (4)

Country Link
EP (1) EP2276932A2 (fr)
CN (1) CN101889144A (fr)
DE (1) DE102007051942A1 (fr)
WO (1) WO2009056207A2 (fr)

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DE102009003957B4 (de) 2008-09-18 2020-12-17 Berling Aero IP UG (haftungsbeschränkt) Dunstabzugshaube
DE102009054787B4 (de) * 2009-12-16 2022-02-10 BSH Hausgeräte GmbH Abscheidungseinheit zur Abscheidung von Partikeln für eine Dunstabzugshaube und Dunstabzugshaube
DE102010053215A1 (de) 2010-12-03 2012-06-06 Berling Gmbh Luftabsaugvorrichtung und Verfahren zur Abscheidung von in einem Luftstrom bewegten Partikeln
DE102010010307A1 (de) 2010-03-04 2011-09-08 Berling Gmbh Luftabsaugvorrichtung und Verfahren zur Abscheidung von in einem Luftstrom bewegten Partikeln
ES2639584T3 (es) * 2010-03-04 2017-10-27 Inter Ablufttechnik Gmbh Dispositivo de aspiración de aire y procedimiento para la separación de partículas movidas en una corriente de aire
CN101846087B (zh) * 2010-05-11 2011-09-14 东元总合科技（杭州）有限公司 离心风扇及设有该离心风扇的密闭式电机
DE102011015361A1 (de) 2011-03-28 2012-10-04 Berling Gmbh Dunstabzugshaube
DE102011015359B4 (de) 2011-03-28 2021-01-07 Berling Aero IP UG (haftungsbeschränkt) Dunstabzugshaube mit Abziehgriff
DE102011015357A1 (de) 2011-03-28 2012-10-04 Berling Gmbh Dunstabzugshaube mit Verschlussdeckel
DE102011015360A1 (de) 2011-03-28 2012-10-04 Berling Gmbh Dunstabzugshaube
DE102012022571A1 (de) * 2012-11-20 2014-05-22 minEnergy GmbH Dunstabzugshaube
DE102013218419A1 (de) * 2013-09-13 2015-03-19 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugsvorrichtung
WO2015089752A1 (fr) * 2013-12-18 2015-06-25 赵兵 Purificateur d'air et ventilateur pour celui-ci
CN103644143A (zh) * 2013-12-18 2014-03-19 深圳奇滨电子有限公司 空气净化机及其风机
DE102016117537A1 (de) * 2016-09-16 2018-04-12 Berling Aero IP UG (haftungsbeschränkt) Dunstabzugsvorrichtung mit Ansaugstutzen
DE102018122452B4 (de) * 2018-09-13 2021-02-11 Berling Aero IP UG (haftungsbeschränkt) Luftabsaugvorrichtung mit Deflektorvorrichtung, Verfahren zur Abscheidung von Kondensat in einer Luftabsaugvorrichtung und Verwendung einer Deflektorvorrichtung
RU2718638C1 (ru) * 2019-11-27 2020-04-10 Федеральное государственное бюджетное образовательное учреждение высшего образования Северо-Кавказский горно-металлургический институт (государственный технологический университет) Капельно-жидкостный уловитель
CN111853982A (zh) * 2020-07-03 2020-10-30 珠海格力电器股份有限公司 一种净化部件及空气消毒机
CN113146453B (zh) * 2021-04-23 2022-12-30 江苏意可航空科技股份有限公司 一种曲面金属薄板的抛光支撑设备
DE102021129238A1 (de) * 2021-11-10 2023-05-11 Berbel Ablufttechnik Gmbh Dunstabzugshaube
CN118088469B (zh) * 2024-04-18 2024-06-21 宁波瑞能智慧科技股份有限公司 一种自适应空气循环扇

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DE20207549U1 (de) 2002-05-08 2002-08-29 Berbel Ablufttechnik GmbH, 48496 Hopsten Vorrichtung zum wirkungsvollen Abscheiden von Schwebteilchen aus einem Luftstrom
CA2406502A1 (fr) * 2002-10-03 2004-04-03 Peter Yeung Boitier de moteur electrique ameliore pour hotte de cuisine

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Also Published As

Publication number Publication date
WO2009056207A3 (fr) 2009-12-17
DE102007051942A1 (de) 2009-04-30
WO2009056207A2 (fr) 2009-05-07
CN101889144A (zh) 2010-11-17

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