EP0121809B1 - Hotte aspiratrice de buée - Google Patents

Hotte aspiratrice de buée Download PDF

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Publication number
EP0121809B1
EP0121809B1 EP84102732A EP84102732A EP0121809B1 EP 0121809 B1 EP0121809 B1 EP 0121809B1 EP 84102732 A EP84102732 A EP 84102732A EP 84102732 A EP84102732 A EP 84102732A EP 0121809 B1 EP0121809 B1 EP 0121809B1
Authority
EP
European Patent Office
Prior art keywords
hood
fresh air
heat exchange
chamber
supply air
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.)
Expired
Application number
EP84102732A
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German (de)
English (en)
Other versions
EP0121809A1 (fr
Inventor
Markus Schmalhofer
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84102732T priority Critical patent/ATE21448T1/de
Publication of EP0121809A1 publication Critical patent/EP0121809A1/fr
Application granted granted Critical
Publication of EP0121809B1 publication Critical patent/EP0121809B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to an extractor hood according to the preamble of claim 1.
  • An extractor hood corresponding to the preamble of claim 1 is known for example from DE-A-30 11 101 and is particularly suitable for use in commercial kitchens.
  • the generic extractor hood has a housing in which an elongated suction chamber is arranged. Above the suction chamber, which is arranged above the cooker or the like producing cooker or the like, the warm exhaust air for removal from the kitchen is fed, for example by means of a fan, to an exhaust air connection from which the exhaust air is discharged into the environment.
  • the known extractor hood also has a supply air storage space and a supply air collection space, between which heat exchange elements of a recuperator arranged in the suction space of the hood are arranged.
  • the heat exchange elements are flowed through by the supply air supplied via the supply air storage space and by the warm exhaust air conveyed into the suction space, whereby a large part of the heat content of the exhaust air can be transferred to the supply air, which after heating is conveyed into the kitchen via exhaust openings of the extractor hood .
  • Another advantage is that the arrangement of the heat exchange elements transversely to the longitudinal direction of the hood enables a larger heat exchange surface per meter of hood length, which results in a very high utilization of the heat content of the exhaust air and thus a very good efficiency of the hood.
  • the extractor hood according to the invention has the particular advantage that the arrangement of the heat exchange elements transversely to the longitudinal direction of the hood offers greater possibilities for adaptation to those caused by different hood lengths Changes in the flow conditions on the supply air and exhaust air side result, which in turn also allows the heat transfer variables, which are also dependent in part on the hood length and the associated changes in the supply air quantities and exhaust air quantities, to be set to values which enable the extractor hood to be optimally efficient.
  • the single figure of the drawing shows a schematically greatly simplified perspective illustration of a central region of an extractor hood according to the invention.
  • the extractor hood 1 according to the invention, of which a central region is shown in the figure, is suspended from the ceiling of a kitchen in a manner not shown in the present example.
  • the hood has a housing 2, in which an elongated suction space 3 is arranged, which can be covered, for example with a grid, not shown in the figure, for example made of expanded material.
  • a collecting space 4 is arranged above the suction space 3 and has a supply air storage space 5, a supply air collecting space 6 and an exhaust air collecting space 7.
  • the supply air storage space 5 and the supply air collection space 6 are each divided into two subspaces 8 and 9 or 10 and 11.
  • the subspaces 8 and 9 of the supply air storage space 5 and the subspaces 10 and 11 of the supply air collection space 6 extend at least approximately over the entire length of the hood and are arranged on both sides of the exhaust air collection space 7 along the two edges of the hood.
  • the two subspaces 8 and 9 of the supply air storage space 5 directly adjoin the exhaust air collecting space 7 and are separated from the exhaust air collecting space 7 by means of upright side walls 12 and 13.
  • the subspaces 8 and 9 of the supply air storage space 5 adjoin the subspaces 10 and 11 of the supply air plenum 6, which are also separated from the subspaces 8 and 9 by upright walls 14 and 15.
  • the subspaces 10 and 11 of the supply air collecting space 6 are connected to the interior of the kitchen, in which the extractor hood 1 according to the invention is arranged, via outlet openings 16 and 17 in side walls 18 and 19.
  • the collecting space 4 is covered with a ceiling wall 20 which extends over the supply air storage space 5, the supply air collecting space 6 and the exhaust air collecting space 7.
  • the subspaces 8 and 9 of the supply air supply space 5 are connected to two distributor ducts 21 and 22 which open into a central supply air duct 23.
  • the supply air duct 23 is connected to the environment in a manner not shown in detail and conveys supply air into the supply air supply space 5.
  • the exhaust air collecting space 7 is connected via an exhaust air connection 24 to an exhaust air duct 25 which discharges the exhaust air extracted from the kitchen into the environment.
  • heat exchange elements 26 are arranged transversely to the longitudinal direction of the hood.
  • the heat exchange elements 26, which in the example are essentially trapezoidal plates made of a material such as copper or aluminum, which is particularly suitable for good heat transfer are arranged at a distance of a few millimeters from one another, where a particularly preferred distance is approximately 5 mm.
  • the distances between the heat exchange elements 26 designed as plates are determined by means of a spacer 27, flow channels 28 and 29 being formed between two heat exchange elements 26, which are used to guide the exhaust air or supply air.
  • the two plates 26 in the front limit a flow channel 28 for exhaust air, the surface 30 adjacent to the underside of the collecting space 4 between the heat exchange elements 26 by means of the spacer 27 being formed in part, as shown a passage opening 31 for exhaust air is covered.
  • a flow channel 29 directly adjoins the flow channel 28, which in turn is delimited by two heat exchange elements 26 designed as plates and is provided for guiding supply air.
  • the horizontal surface 32 bordering on the underside of the collecting space 4, delimited by the plates 26 of the flow channel 29, is partially covered by the spacer 27 to form an inlet and outlet opening 33 and 34 for supply air, respectively, while that according to the selected representation downward-facing surfaces 35, 36 and 37 delimited by the plates 26 of the flow channel 29 are completely covered by the spacer 27.
  • All flow channels 28 and 29 for exhaust air or supply air of the heat exchanger elements 26, which are combined as plates by means of the spacer 27 to form a heat exchange module, are designed in the manner described above, so that along the longitudinal direction of the housing 2 of the hood, a flow channel 28 for exhaust air alternately side by side and a flow channel 29 for supply air are arranged in the immediate vicinity of one another, the heat exchange elements 26 being arranged transversely to the longitudinal direction of the hood.
  • the through openings 31 for exhaust air which are formed by the partial covering of the surfaces 30 adjoining the underside of the collecting space 4 are connected to the exhaust air collecting space 7, while the inlet openings 33 of the flow channels 29 for supply air are connected to the subspaces 8 and 9 of the supply air storage space 5 and the outlet openings 34 the subspaces 10 and 11 of the supply air plenum 6 are connected.
  • filters 38 and 39 which extend over the entire length of the hood and are suspended in the hood in an oblique arrangement, and whose lower ends are arranged in a catch surface 40 arranged horizontally in the hood.
  • the filters 38 and 39 are permeable to air, so that the exhaust air sucked in from the stove upwards can penetrate the filters 38 and 39.
  • the filters 38 and 39 catch condensation water and liquid fat particles which precipitate out as a result of the condensation effect during the heat transfer from the exhaust air to the supply air and discharge them into the collecting surface 40.
  • warm exhaust air is sucked in from the stove upwards into the housing 2, for example by means of a blower, not shown, and is conveyed through the filters 38 and 39 into the flow channels 38 for exhaust air.
  • supply air is conveyed via the supply air duct 23 into the distribution ducts 21 and 22, which convey the supply air into the subspaces 8 and 9 of the supply air supply space 5.
  • the supply air is conveyed via the inlet openings 33 into the flow channels 29 for supply air, with the inlet openings 33 in the illustrated embodiment alternatingly along the longitudinal direction of the housing 2, supply air via the inlet openings 33 arranged in the partial space 8 and in the partial space 9 lead into the flow channels 29.
  • the supply air heated by the heat transfer between the exhaust air and the supply air alternately exits through the outlet openings 34 in the subspaces 10 and 11, after which the heated supply air via the exhaust openings 16 and 17 into the interior of the kitchen at least approximately parallel to the ceiling Generation of a room air roller to be blown out.
  • the alternate arrangement of the inlet openings 33 and the outlet openings 34 selected in the illustrated embodiment is necessary in order to obtain a hood that can blow heated supply air into the interior on its two longitudinal sides, for which purpose an arrangement of the subspaces 10 and 11 in the immediate vicinity of the Longitudinal edges of the hood is required.
  • a subdivision into two subspaces 8 and 9 or 10 and 11 of the supply air supply space 5 or the supply air collection space 6 is not necessary, so that for such a hood, for example, the subspace 8 and the Partial space 10 of the supply air storage space 5 or the supply air collection space 6 could be combined to form a supply air storage space, in which case the outlet openings 34 would form inlet openings 33 which could promote the supply air to be heated into the supply air storage space 5, which would then be formed by the part spaces 9 and 11 , in which case each inlet opening 33 would form an outlet opening 34 for supply air in this supply air storage space.
  • the supply air is alternately introduced into the flow channels 29 via the inlet openings 33 in the subspaces 8 and 9 of the supply air supply space 5 and after heating by the warm one Exhaust air is introduced via the outlet openings 34 into the subspaces 10 and 11 of the supply air collecting space 6, so that it is possible to blow out heated supply air in both directions via the outlet openings 16 and 17.
  • the exhaust air is introduced via the flow channels 28 and the passage openings 31 into the exhaust air collecting space 7, from which the exhaust air is discharged via the exhaust air connection 24 into the exhaust air channel 25 and from there into the environment.
  • the arrangement of the heat exchange elements 26 transversely to the longitudinal direction of the hood gives the advantage that, depending on the length of the hood and the resulting supply air and exhaust air quantities, a corresponding number of heat exchange elements 26 and a resulting number of flow channels 28 and 29 for exhaust and supply air can be selected that enables optimal flow and heat transfer conditions.
  • the cross-sectional areas of the flow channels 28 that are particularly suitable for optimal flow and heat transfer conditions and 29 to be determined and determined in the manufacture of the heat exchange modules.
  • Such a base unit can then be used to produce hoods of different lengths for different purposes, with a suitable number of heat exchange modules being able to be provided in accordance with the amounts of exhaust air and supply air to be expected, in order to achieve the optimum flow and heat transfer conditions which achieve optimum efficiency of the extractor hood 1 enables.
  • the extractor hood 1 according to the invention is also possible.
  • the side walls 18 and 19 with the blow-out openings 16 and 17 are arranged inclined downward in a hewing state, so that roof-like connecting areas in when a plurality of extractor hoods 1 are joined together along their longitudinal edges to form a suspended ceiling Let form the joined side walls 18 and 19 of the respective extractor hoods 1.
  • the heat exchange surface which is particularly important for a high degree of efficiency in the heat exchange between exhaust air and supply air, can be significantly increased compared to known hoods by the arrangement of the heat exchange elements transversely to the longitudinal direction of the hood, which means with the extractor hood according to the invention 1 a particularly high degree of efficiency can be achieved.
  • Efficiencies of between 70 and 80% were determined in the case of hoods of the design according to the invention, with plate thicknesses of approximately 0.3 mm and plate spacing of 5 mm having proven particularly advantageous when designing the heat exchange elements 26.
  • the blower performance for conveying exhaust air and supply air may be lower than with known hoods.
  • the high efficiency there is a very high formation of condensate and thus a very high fat separation from the extracted exhaust air, it being determined with a hood of the design according to the invention that the degree of fat separation can be so high that additional measures to avoid fires and explosions can be taken can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Soy Sauces And Products Related Thereto (AREA)
  • Prevention Of Fouling (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Cyclones (AREA)

Claims (12)

1. Hotte d'extraction des fumées comportant une chambre d'aspiration qui s'étend en longueur, avec un raccord pour l'évacuation de l'air d'évacuation aspiré, et comportant une Cnombre d'arrivée de l'air d'admission et une chambre de collecte de l'air d'admission, entre lesquelles sont disposés des éléments échangeurs de chaleur, que peut parcourir, en les traversant, l'air d'admission, d'un récupérateur disposé dans la chambre d'aspiration de la hotte et autour duquel s'écoule l'air d'évacuation, caractérisée en ce que la chambre d'arrivée de l'air d'admission (5) et la chambre de collecte de l'air d'admission (6) sont disposées dans la zone de la face supérieure de la chambre d'aspiration (3), le long respectivement d'un bord da la hotte, et s'étendent sur au moins approximativement toute la longueur de la hotte; et en ce que les éléments échangeurs de chaleur (26) sont disposés transversalement par rapport à la direction longitudinale de la hotte.
2. Hotte d'extraction des fumées selon la revendication 1, caractérisée en ce que les éléments échangeurs de chaleur (26) sont conçus sous forme de plaques qui sont regroupées pour donner des modules échangeurs de chaleur.
3. Hotte d'extraction des fumées selon la revendication 2, caractérisée en ce que les distances entre les plaques du module pourformer les canaux d'écoulement (28, 29) sont déterminées au moyen d'au moins un écarteur (27), étant précisé qu'alternativement, chaque fois, un canal d'écoulement (28) pour l'air d'évacuation est disposé au voisinage immédiat d'un canal d'écoulement (29) pour l'air d'admission.
4. Hotte d'extraction des fumées selon la revendication 3, caractérisée en ce que la surface (30) disposée, à l'état monté de la hotte, horizontalement au voisinage de la face supérieure de la chambre d'aspiration (3) et limitée par deux plaques pour former un canal d'écoulement (28) pour l'air d'évacuation, est partiellement recouverte au moyen de l'écarteur (27) pour former une ouverture de passage (31).
5. Hotte d'extraction des fumées selon la revendication 3 ou la revendication 4, caractérisée en ce que la surface (32) disposée, à l'état monté de la hotte, au voisinage de la face supérieure de la chambre d'aspiration (3) et limitée par deux plaques pour former un canal d'écoulement (29) pour l'air d'admission, est partiellement recouverte au moyen de l'écarteur (27), pour former au moins une ouverture d'entrée (33) et au moins une ouverture de sortie (34) pour l'air d'admission, tandis que la surface (35, 36, 37), dirigée vers le ba" en l'état monte de la hotte, est entièrement recouverte, au moyen de l'écarteur (27), entre deux plaques pour former un canal d'écoulement (29) pour l'air d'admission.
6. Hotte d'extraction des fumées selon l'une des revendications 1 à 5, caractérisée en ce qu'en l'etat monté de la hotte, au-dessus des éléments échangeurs de chaleur (26), est disposée au moins une chambre de collecte (4) dans laquelle sont disposées la chambre d'arrivée de l'air d'admission (5), la chambre de collecte de l'air d'admission (6) et une chambre de collecte de l'air d'évacuation (7).
7. Hotte d'extraction des fumées selon la revendication 6, caractérisée en ce que les ouvertures de passage (31) pour l'air d'évacuation débouchent dans la chambre de collecte de l'air d'évacuation (7) qui est reliée au raccord pour l'air d'évacuation (24).
8. Hotte d'extraction des fumées selon l'une des revendications 1 à 7, caractérisée en ce que la chambre d'arrivée de l'air d'admission (5) et la chambre de collecte de l'air d'admission (6) sont respectivement divisées en deux chambres partielles (8, 9) et (10,11) qui sont disposées des deux côtés de la chambre de collecte de l'air d'évacuation (7), étant précisé que les chambres partielles (10, 11) de la chambre de collecte de l'air d'admission (6) sont disposées le long des bords longitudinaux de la hotte et à leur voisinage immédiat.
9. Hotte d'extraction des fumées selon la revendication 8, caractérisée en ce que les ouvertures d'entrée (33) et les ouvertures de sortie (34) pour l'air d'admission débouchent respectivement, alternativement, dans l'une des deux chambres partielles (8, 9 et 10. 11) de la chambre d'arrivée de l'air d'admission (5) et de la chambre de collecte de l'air d'admission (6).
10. Hotte d'extraction des fumées selon l'une des revendications 1 à 9, caractérisée en ce qu'il est prévu un nombre de modules échangeurs de chaleur qui dépend de la longueur de la hotte.
11. Hotte d'extraction des fumeés selon l'une des revendications 2 à 10, caractérisée en ce que les plaques des modules échangeurs de chaleur présentent une épaisseur de 0,3 mm.
12. Hotte d'extraction des fumées selon l'une des revendications 1 à 11, caractérisée en ce que la distance entre les éléments échangeurs de chaleur (26) est de quelques millimètres, de préférence 5 mm.
EP84102732A 1983-03-15 1984-03-13 Hotte aspiratrice de buée Expired EP0121809B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102732T ATE21448T1 (de) 1983-03-15 1984-03-13 Dunstabzugshaube.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833309208 DE3309208A1 (de) 1983-03-15 1983-03-15 Dunstabzugshaube
DE3309208 1983-03-15

Publications (2)

Publication Number Publication Date
EP0121809A1 EP0121809A1 (fr) 1984-10-17
EP0121809B1 true EP0121809B1 (fr) 1986-08-13

Family

ID=6193511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102732A Expired EP0121809B1 (fr) 1983-03-15 1984-03-13 Hotte aspiratrice de buée

Country Status (6)

Country Link
EP (1) EP0121809B1 (fr)
AT (1) ATE21448T1 (fr)
DE (2) DE3309208A1 (fr)
DK (1) DK153436C (fr)
IE (1) IE55587B1 (fr)
NO (1) NO161774C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6543526B2 (en) 2001-06-01 2003-04-08 Sidney Jacobs Combination cook stove heat exchanger, filter, and recirculation assembly
CN103574721B (zh) * 2013-10-29 2016-07-06 九阳股份有限公司 一种侧吸式油烟机
AT514933B1 (de) * 2013-11-22 2015-05-15 Scheuch Gmbh Absaugvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362677A1 (fr) * 1976-08-27 1978-03-24 Electricite De France Hotte filtrante autonettoyante avec recuperation de chaleur, notamment pour cuisines
US4175614A (en) * 1978-06-01 1979-11-27 Modine Manufacturing Company Heat exchanger device
DE8307495U1 (de) * 1983-03-15 1983-07-14 Schmalhofer, Markus, 8350 Plattling Dunstabzugshaube

Also Published As

Publication number Publication date
IE840607L (en) 1984-09-15
DK153436B (da) 1988-07-18
DK153436C (da) 1988-12-12
DE3460458D1 (en) 1986-09-18
NO840946L (no) 1984-09-17
IE55587B1 (en) 1990-11-07
DK136484D0 (da) 1984-02-29
EP0121809A1 (fr) 1984-10-17
NO161774C (no) 1989-09-27
DK136484A (da) 1984-09-16
DE3309208A1 (de) 1984-09-20
ATE21448T1 (de) 1986-08-15
NO161774B (no) 1989-06-19

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