US20110214664A1 - Extractor hood - Google Patents

Extractor hood Download PDF

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Publication number
US20110214664A1
US20110214664A1 US13/119,613 US200913119613A US2011214664A1 US 20110214664 A1 US20110214664 A1 US 20110214664A1 US 200913119613 A US200913119613 A US 200913119613A US 2011214664 A1 US2011214664 A1 US 2011214664A1
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US
United States
Prior art keywords
extractor hood
air duct
section
separator unit
impact element
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.)
Abandoned
Application number
US13/119,613
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English (en)
Inventor
Josef Wübker
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.)
Berbel Ablufttechnik GmbH
Original Assignee
Berbel Ablufttechnik GmbH
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 Berbel Ablufttechnik GmbH filed Critical Berbel Ablufttechnik GmbH
Assigned to BERBEL ABLUFTTECHNIK GMBH reassignment BERBEL ABLUFTTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WUBKER, JOSEF
Publication of US20110214664A1 publication Critical patent/US20110214664A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the present invention concerns an extractor hood for the removal on dirt particles and especially fat and oil droplets from the airflow.
  • Extractor hoods are especially deployed in kitchens to filter and remove cooking vapors above a stove or cooking area.
  • extractor hoods are differentiated in two groups according to the type of airflow.
  • exhaust air extraction hoods the exhaust air is channeled through ducting to the atmosphere outside the building, where the stove or cooking area is positioned to avoid smells and build-up of dirt within the kitchen and the building in general.
  • air circulation extractor hoods the air absorbed by the extractor hood is cleaned by a filter and returned to the kitchen.
  • Extractor hoods usually consist of a separator unit where the dirt particle separation occurs, and a fan or blower unit for removing the exhaust air. Separation can take place by means of separator elements and/or a suitable ducting of the airflow.
  • an extractor hood is described, in which by means of dual redirection of an airflow containing dirt particles the majority of the dirt particles is already deposited on the impact or separation surfaces.
  • lint filter consists of fine-woven fabric, which catches almost all remaining solid materials and dirt particles in the exhaust air before entering the fan unit. The higher the dirt particle concentration in the exhaust air, the faster the lint filter is saturated or blocked and can thus no longer fulfill its filter function. In this case the lint filter must be removed and cleaned or replaced with a new lint filter. It must also be considered that the lint filter presents a resistor within the flow system, which in comparison to an extractor hood without lint filter leads to a higher strain on the fan unit, meaning that the fan unit must produce a higher pressure difference. Higher strain on the fan unit inevitably leads to more operating noise, which can be annoying.
  • the task of this present invention is to create an extractor hood without aforementioned disadvantages.
  • the task is solved by an extractor hood according to claim 1 .
  • the extractor hood includes a fan unit to create exhaust airflow through the extractor hood and a separator unit for the separation of dirt particles from the exhaust airflow.
  • the separator unit defines at least one air duct, in which the exhaust airflow is several times redirected.
  • one impact element is arranged, which at least in certain areas has capillary holes, so that dirt particles can be separated from the airflow through the capillary holes along the at least one air duct.
  • These capillary holes are of a size to allow dirt particles deposited in the impact surface to be removed by the capillary effect from the impact surface.
  • the size of the capillary holes must be chosen in such way that the airflow cannot significantly pass through the impact surface.
  • the diameter of the capillary holes is preferably in the range of 0.5 to 5 mm, and further preferably in the range of 1 to 3 mm.
  • the separator unit is executed with two mirror-symmetric exhaust air ducts to a center line of the extractor hood, where the at least in certain areas arranged capillary holes in each of the exhaust air ducts have impact surfaces opposing and via a curved connecting area are joined sides of the impact element.
  • FIGS. 1 a and 1 b show the front view and a cross section along line A-A of an extractor hood according to the invention.
  • FIGS. 2 a and 2 b show FIGS. 1 a and 1 b partly in exploded view.
  • FIG. 3 shows a perspective view of the extractor hood according to the invention partly in exploded view.
  • FIG. 4 shows parts of the separator unit of the extractor hood according to the invention as cross section in detail.
  • FIGS. 5 a and 5 b show parts of the separator unit of the extractor hood according to the invention in perspective view.
  • Extractor hood 10 has a hollow cubic or shaft-like casing. Exemplary casing dimensions are: width 60 cm, depth 40 cm and height 80 cm.
  • the casing consists mainly of a frame covered with stainless steel plates.
  • On front 12 of this casing a detachable control knob 14 , connected to the control unit (not shown) is attached, which allows the control of extractor hood 10 and especially its fan unit or blower 18 .
  • FIG. 1 As can be seen in FIG.
  • extractor hood 10 shows, according the described design, also a suitable design of its top end 16 , which allows for the extractor hood 10 to be ceiling-mounted above a stove, and which is provided with a circular opening to connect to an exhaust air duct.
  • the extractor hood 10 described is designed as an exhaust hood, the expert can easily see that an extractor hood according to the invention can also be used in air circulation operation.
  • the extractor hood according to the invention 10 can also be wall-mounted instead of ceiling-mounted.
  • Separator unit 20 is designed in such way that within the respective airflows are redirected several times, so that dirt particles contained in the airflows, such as fat or oil droplets, are mainly deposited on the impact or separator surfaces of separator unit 20 .
  • the principle of at least dual airflow redirection in a separator unit is already known through aforementioned EP 1 502 057.
  • Aforementioned multiple redirection of the airflows in separator unit 20 of extractor hood 10 is mainly achieved by the shape and array of base element 30 , impact element 40 , central element 50 and ceiling element 60 , which are part of separator unit 20 .
  • the design of these elements 30 , 40 , 50 and 60 and thus also separator unit 20 assembled from these elements are mainly symmetric with regard to a center line of extractor hood 10 , which runs parallel to front 12 , and in the cross section of FIG. 4 is shown as dotted center line B.
  • the route through air duct 25 a defined by front section 20 a of separator unit 20 from front air inlet 22 a to fan unit 18 corresponds to the route of air duct 25 b defined by rear segment 20 b of separator unit 20 from rear air inlet 22 b to fan unit 18 .
  • the expert will detect that the invention can also be generally implemented in an extractor hood with only one air inlet with its separator unit only defining one air duct between this air inlet and a fan unit.
  • Separator unit 20 consists, as already mentioned, mainly of base element 30 , impact element 40 , and central element 50 and ceiling element 60 .
  • base element 30 has the shape of an oblong bowl with longitudinal reinforced front and rear outer rims 32 a, 32 b pointing upward, and a longitudinal central area 34 , also pointing upward.
  • Base element 30 is shaped in such way that between the outer rims 32 a, 32 b and central area 34 a front 36 a and rear bowl-like sections 36 b are formed.
  • the central area 34 has along center line B a V-shaped depression 38 , which is mainly complementary designed to lower end 42 of impact element 40 , as described following in detail.
  • Front section 50 a and rear section 50 b of central element 50 are each designed in such way and positioned in relation to base element 30 that front section 50 a of central element 50 and front section 30 a of base element 30 together define the first section of front air duct 25 a, and that rear section 50 b of central element 50 and rear section 30 b of base element 30 together define the first section of rear air duct 25 b.
  • this can be for both front 50 a and rear sections 50 b of central element 50 a suitably curved metal sheet.
  • Front section 50 a of central element 50 shows for instance an approx.
  • the rear section 50 b being symmetrical to front section 50 a of central element 50 shows the same first 52 b, second 54 b, third 55 b, fourth 56 b and fifth sections 58 b.
  • the shape of the respective first sections of air ducts 25 a, 25 b which are defined by the shape and relative array of base element 30 and central element 50 , can best be seen in the cross section drawing of FIG. 4 .
  • front air inlet 22 a which is mainly defined by, with respect to the horizontal, approx. 45 degree upward running first flat section 52 a of front section 50 a of central element 50 and reinforced upward-pointing outer rim 32 a of front section 30 a of base element 30 , in front area 20 a of separator unit 20 .
  • air inlet 22 a entering exhaust air is for the first time redirected between the reinforced upward-pointing outer rim 32 a of front section 30 a of base element 30 and the slightly downward running second flat section 54 a and the adjoining, mainly vertically down running third flat section 55 a of front section 50 a of central element 50 , since the airflow must follow the downwards curved air duct 25 a. Due to this first redirection of the airflow the majority of the dirt particles, such as fat and oil droplets, collect especially on the mainly vertically downward running third flat section 55 a of front section 50 a of central element 50 . Such first redirection is in principle known from EP 1 502 057.
  • the further downstream part of air duct 25 a is formed by the preferably in an approx. 70 degree angle against the horizontal upward running fifth flat section 58 a of front section 50 a of central element 50 and front section 40 a of impact element 40 .
  • Impact element 40 shows in the cross section drawing of FIG. 4 mainly a U-shaped design with a flat front section 40 a, a curved connecting section 42 , which forms the lower end of impact element 40 , and a flat rear section 40 b.
  • Impact element 40 can for instance be a suitably curved and mounted metal sheet.
  • the curved connecting section 42 is designed in such way, that its shape, as shown in FIG.
  • both front section 40 a and rear section 40 b of the impact element have a multitude of capillary holes 44 .
  • These capillary holes 44 are designed in such way that dirt particles, such as fat and oil droplets, which are still contained in the exhaust airflow, impact and adhere to front section 40 a and/or rear section 40 b of impact element 40 , are removed due to the capillary effect and the continuous impact of airflow on the respective inner sides of front 40 a and/or rear section 40 b of impact element 40 .
  • the dirt particles removed in such way are no longer exposed to the exhaust airflows through the respective air ducts 25 a, 25 b and can therefore not be carried off by them.
  • the capillary holes preferably have a diameter in the range of 0.5 to 5 mm, further preferably of 1 to 3 mm auf. Dirt particles, especially fat and oil droplets, removed on the respective inner sides of front 40 a and/or rear section 40 b of impact element 40 , drain, due to gravitational force, on the inner sides of front 40 a and/or rear section 40 b of impact element 40 down and collect in the area of connecting section 42 of impact element 40 .
  • This connecting section 42 of impact element 40 can be shaped as a solid bowl, again provided with a multitude of capillary holes, or feature a different structure, which allows dirt particles collecting on the inner side of connecting section 42 to drip or drain off through V-shaped depression 38 defined by central area 34 of base element 40 , such as a longitudinal slot.
  • Ceiling element 60 consists mainly of a flat central section 62 with two side sections joining the side rims, running downward in an approx. 70 degree angle with respect to the horizontal, which are front side section 64 a and rear side section 64 b of ceiling element 60 .
  • any residual deposits of dirt particles occur along the further route of air duct 25 a , where the greatest centrifugal forces occur, which is at the bottom of flat central section 62 and in an angle of approx. 70 degree with respect to the horizontal downwards running side section 64 a as well as along the part on top of air duct 25 a of, with respect to the horizontal, slightly downwards running second flat section 54 a of front section 50 a of central element 50 .
  • the air flows, in this way cleaned of dirt particles, to fan unit 18 , to be finally removed in circulation air or exhaust air operation.
  • the individual elements of separator unit 20 which are base element 30 , impact element 40 , central element 50 and ceiling element 60 are in such way installed inside extractor hood 10 , that these elements can be easily removed and reinstalled for cleaning in extractor hood 10 .
  • base element 30 , impact element 40 , central element 50 and ceiling element 60 are made from a dishwasher-safe material, such as stainless steel, to be easily washed in a dishwasher in case of soiling for restoring the separation efficiency of separator unit 20 .
  • base element 30 which will have to be cleaned most frequently, could be made of two telescopic metal sheets, so that the length of base element 30 can be adjusted to dishwasher dimensions.
  • Separator unit 20 and its elements could be made removable by means of frictionally engaged connectors and/or magnets in extractor hood 10 , as shown in FIGS. 5 a and 5 b.
  • separator unit 20 of extractor hood 10 defines according to the preferable design of the invention two mirror-symmetric air ducts 25 a and 25 b with respect to center line B of separator unit 20 . But as the expert will have detected, these two air ducts 25 a and 25 b are not running completely separate through separator unit 20 . Especially in the area of impact element 40 the airflows through air ducts 25 a and 25 b interact beneficially. On the one hand the mutual impact of impact element 40 contributes, if selecting the suitable size of capillary holes 44 , that the respective airflow cannot pass through impact element 40 .
  • a certain gap can be left between V-shaped depression 38 in the central area 34 of base element 30 and the complementary shaped or curved connecting section 42 of impact element 40 , since here the airflows from both sides meet and thus prevent continuous flow of further exhaust air in this area.
  • this gap between depression 38 in central area 34 of base element 30 and the complementary shaped connecting section 42 of impact element 40 to a certain degree virtually does not exist.
  • the distance between the V-shaped depression 38 in the central area 34 of base element 30 and the curved connecting section 42 of impact element 40 is preferably in the range of 2 to 10 mm. Further preferred the distance is 5 mm.
  • Control knob 14 is preferably detachable and, like the elements of separator unit 20 , made from a dishwasher-safe material.
  • Control knob 14 of the preferred design of the invention of extractor hood 10 allows in connection with a control unit the control of fan unit 18 , for instance the setting of different power levels, as well as the control of further electric components, such as lights.
  • the setting of different power levels is affected by turning control knob 14 and switching the lights on and off by pressing control knob 14 .
  • the preceding detailed description of the invention only serves as an explanation.
  • the invention by no means is limited to the described design example, but can be adapted by an expert in a suitable way to individual operating requirements, which may deviate from the described operating conditions.
  • the extractor hood according to the invention can for instance be favorably deployed in the industrial and commercial fields as well as in the non-commercial field.
  • the expert will further detect that instead of the described symmetry the separator unit with regard to a section running parallel to the extractor hood front, such symmetry of the separator unit alternatively or in addition with regard to a vertical section of the extractor hood front through its center line can be achieved.
  • the described separator unit shows a different geometry, for instance radial symmetric or elliptical. It is only essential that an air duct is formed by the separator unit, along which an impact element is arranged, which at least in certain areas has capillary holes to remove deposited dirt particles on the impact element.
  • Impact element 40 a Front section of impact element 40 b Rear section of impact element 42 Connecting section 44 Capillary holes 50 Central element 50 a Front section of central element 50 b Rear section of central element 52 a First section of front section of central element 52 b First section of rear section of central element 54 a Second section of front section of central element 54 b Second section of rear section of central element 55 a Third section of front section of central element 55 b Third section of rear section of central element 56 a Fourth section of front section of central element 56 b Fourth section of rear section of central element 58 a Fifth section of front section of central element 58 b Fifth section of rear section of central element 60
  • Ceiling element 60 a Front section of ceiling element 60 b Rear section of ceiling element 62
  • Central section 64 a Front side section of ceiling element 64 b Rear side section of ceiling element A Center line of section B Center line of separator unit

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Separating Particles In Gases By Inertia (AREA)
US13/119,613 2008-09-17 2009-09-16 Extractor hood Abandoned US20110214664A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1020080475955 2008-09-17
DE102008047595A DE102008047595A1 (de) 2008-09-17 2008-09-17 Dunstabzugshaube
PCT/EP2009/006703 WO2010031550A1 (fr) 2008-09-17 2009-09-16 Hotte aspirante

Publications (1)

Publication Number Publication Date
US20110214664A1 true US20110214664A1 (en) 2011-09-08

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ID=41258909

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/119,613 Abandoned US20110214664A1 (en) 2008-09-17 2009-09-16 Extractor hood

Country Status (7)

Country Link
US (1) US20110214664A1 (fr)
EP (1) EP2334988B1 (fr)
DE (1) DE102008047595A1 (fr)
DK (1) DK2334988T3 (fr)
ES (1) ES2587329T3 (fr)
PL (1) PL2334988T3 (fr)
WO (1) WO2010031550A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2868983A1 (fr) * 2013-10-16 2015-05-06 BSH Hausgeräte GmbH Hotte aspirante
US11060736B2 (en) 2019-08-07 2021-07-13 ANH Innovation, LLC Mobile recirculation grill with variable fan drive
CN114259856A (zh) * 2021-11-03 2022-04-01 苏州韩博环境科技有限公司 一种液封的过滤抽气装置及抽气方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012022571A1 (de) * 2012-11-20 2014-05-22 minEnergy GmbH Dunstabzugshaube
DE102015200641A1 (de) * 2015-01-16 2016-07-21 Berbel Ablufttechnik Gmbh Dunstabzugshaube
CN105526610A (zh) * 2015-12-28 2016-04-27 北京厨无忧科技有限公司 一种基于涡流原理的油烟净化方法及油烟净化结构

Citations (17)

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US3785124A (en) * 1971-08-02 1974-01-15 Gaylord Ind Pollution-free kitchen ventilator
US4022118A (en) * 1976-04-12 1977-05-10 Mcgraw-Edison Company Kitchen ventilator grease extractor construction
US4071019A (en) * 1976-04-08 1978-01-31 Industrial Industries, Inc. Grease extractor
US4854949A (en) * 1988-04-19 1989-08-08 Giles Enterprises, Inc. Apparatus for cooking food including a ventless exhaust system
US4902316A (en) * 1988-04-19 1990-02-20 Giles Enterprises, Inc. Oven including a ventless exhaust system
US5192349A (en) * 1989-05-10 1993-03-09 Metallgesellschaft Aktiengesellschaft Filter element for separating dusts from gases
US5718219A (en) * 1997-01-10 1998-02-17 Boudreault; Jean-Pierre Kitchen exhaust hood assembly
US5904751A (en) * 1995-11-20 1999-05-18 North Star Technologies Ltd. Separation apparatus
US6162286A (en) * 1996-06-01 2000-12-19 Kabushiki Kaisha Toteku Japan Exhaust cleaning system
US6349716B1 (en) * 2000-09-28 2002-02-26 Gaylord Industries, Inc. Kitchen ventilator with internal damper
US6443144B1 (en) * 1997-08-25 2002-09-03 Veritech Filtration Limited Air extraction apparatus
US20030051725A1 (en) * 2001-09-20 2003-03-20 Chan-Ying Man Extractor hood
US6817282B2 (en) * 2000-12-04 2004-11-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Cooker
US20060096257A1 (en) * 2002-05-08 2006-05-11 Berbel Ablufftechnik Gmbh Device for effectively removing suspended particles from an airflow
US7470043B2 (en) * 2006-09-07 2008-12-30 Hunter Fan Company Ventilation fan and light
US7767003B2 (en) * 2002-11-04 2010-08-03 Veritruff (Proprietary) Limited Removal of contaminants from a contaminated gas or vapour stream
US8061135B2 (en) * 2008-03-07 2011-11-22 GM Global Technology Operations LLC Condensate extractor for charge air cooler systems

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB461180A (en) * 1935-06-11 1937-02-11 Marta Zander Apparatus for the separation of solid or liquid particles from gases, vapours or smoke
EP0612962B1 (fr) * 1993-02-23 1995-01-18 MAIMER GmbH Hotte d'évacuation de fumées, en particulier pour cuisines collectives
FR2770417B1 (fr) * 1997-11-05 2001-01-26 Const Aero Navales Separateur de l'eau contenue dans un ecoulement de fluide
JP2008064347A (ja) * 2006-09-05 2008-03-21 Cleanup Corp レンジフード

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785124A (en) * 1971-08-02 1974-01-15 Gaylord Ind Pollution-free kitchen ventilator
US4071019A (en) * 1976-04-08 1978-01-31 Industrial Industries, Inc. Grease extractor
US4022118A (en) * 1976-04-12 1977-05-10 Mcgraw-Edison Company Kitchen ventilator grease extractor construction
US4854949A (en) * 1988-04-19 1989-08-08 Giles Enterprises, Inc. Apparatus for cooking food including a ventless exhaust system
US4902316A (en) * 1988-04-19 1990-02-20 Giles Enterprises, Inc. Oven including a ventless exhaust system
US5192349A (en) * 1989-05-10 1993-03-09 Metallgesellschaft Aktiengesellschaft Filter element for separating dusts from gases
US5904751A (en) * 1995-11-20 1999-05-18 North Star Technologies Ltd. Separation apparatus
US6162286A (en) * 1996-06-01 2000-12-19 Kabushiki Kaisha Toteku Japan Exhaust cleaning system
US5718219A (en) * 1997-01-10 1998-02-17 Boudreault; Jean-Pierre Kitchen exhaust hood assembly
US6443144B1 (en) * 1997-08-25 2002-09-03 Veritech Filtration Limited Air extraction apparatus
US6349716B1 (en) * 2000-09-28 2002-02-26 Gaylord Industries, Inc. Kitchen ventilator with internal damper
US6817282B2 (en) * 2000-12-04 2004-11-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Cooker
US20030051725A1 (en) * 2001-09-20 2003-03-20 Chan-Ying Man Extractor hood
US20060096257A1 (en) * 2002-05-08 2006-05-11 Berbel Ablufftechnik Gmbh Device for effectively removing suspended particles from an airflow
US7767003B2 (en) * 2002-11-04 2010-08-03 Veritruff (Proprietary) Limited Removal of contaminants from a contaminated gas or vapour stream
US7470043B2 (en) * 2006-09-07 2008-12-30 Hunter Fan Company Ventilation fan and light
US8061135B2 (en) * 2008-03-07 2011-11-22 GM Global Technology Operations LLC Condensate extractor for charge air cooler systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2868983A1 (fr) * 2013-10-16 2015-05-06 BSH Hausgeräte GmbH Hotte aspirante
US11060736B2 (en) 2019-08-07 2021-07-13 ANH Innovation, LLC Mobile recirculation grill with variable fan drive
US11193674B2 (en) 2019-08-07 2021-12-07 ANH Innovation, LLC Mobile recirculation grill with plenum and diffuser
CN114259856A (zh) * 2021-11-03 2022-04-01 苏州韩博环境科技有限公司 一种液封的过滤抽气装置及抽气方法

Also Published As

Publication number Publication date
EP2334988B1 (fr) 2016-06-08
PL2334988T3 (pl) 2016-12-30
DE102008047595A1 (de) 2010-03-25
WO2010031550A1 (fr) 2010-03-25
DK2334988T3 (en) 2016-09-12
EP2334988A1 (fr) 2011-06-22
ES2587329T3 (es) 2016-10-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BERBEL ABLUFTTECHNIK GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WUBKER, JOSEF;REEL/FRAME:026604/0982

Effective date: 20110502

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION