EP0559080A1 - Dispositif pour évacuer une composante de gaz - Google Patents

Dispositif pour évacuer une composante de gaz Download PDF

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Publication number
EP0559080A1
EP0559080A1 EP93102950A EP93102950A EP0559080A1 EP 0559080 A1 EP0559080 A1 EP 0559080A1 EP 93102950 A EP93102950 A EP 93102950A EP 93102950 A EP93102950 A EP 93102950A EP 0559080 A1 EP0559080 A1 EP 0559080A1
Authority
EP
European Patent Office
Prior art keywords
housing opening
radial fan
housing
flap
partition
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.)
Granted
Application number
EP93102950A
Other languages
German (de)
English (en)
Other versions
EP0559080B1 (fr
Inventor
Armin Klingler
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.)
Rational AG
Original Assignee
Rational AG
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 Rational AG filed Critical Rational AG
Priority to US08/025,999 priority Critical patent/US5370498A/en
Priority to JP04407393A priority patent/JP3437597B2/ja
Publication of EP0559080A1 publication Critical patent/EP0559080A1/fr
Application granted granted Critical
Publication of EP0559080B1 publication Critical patent/EP0559080B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the invention relates to a device for discharging a gas component, such as moisture or the like, from a cooking space of a commercial kitchen appliance or the like, in which a radial fan is arranged near an essentially vertical housing wall, the drive shaft of which penetrates the housing wall.
  • a gas component such as moisture or the like
  • an extractor hood for kitchens is known in which an essentially radially directed flow is generated in the gas volume present in the extractor hood.
  • the radial fan is included partially surrounded by a guide surface, a housing wall being provided, onto which the gas flow in the extractor hood is directed by means of a partition serving as a guide surface.
  • a single gas component, such as moisture or the like, which is present in excess, from the gas volume is not possible with this device.
  • the invention has for its object to develop the generic device in such a way that the content of a gas component, such as moisture, is made possible by simple means.
  • this object is achieved in that the housing wall has a housing opening near the circumference of the radial fan; and that a partition is provided near the circumference of the radial fan for deflecting a part of the flow generated by the fan onto the housing opening.
  • the radial fan is at least partially surrounded by a guide surface which includes a discharge area adjacent to the housing opening.
  • the guide surface is essentially circular is.
  • the guide surface has the shape of a hollow truncated cone which widens towards the housing wall.
  • the guide surface is arranged around the entire circumference of the blower, but at most partially overlapping the blower in the axial direction.
  • the housing opening can be at least partially opened and / or closed depending on the content of the gas in the excess component.
  • a further embodiment of the invention provides that at least one flap, a lamella closure, an iris-like closure or the like is provided for closing the housing opening.
  • the flap is guided in rails.
  • a stud is attached to the flap, which slides the flap in the shaft.
  • a further embodiment of the invention provides that it has a shaft with an outlet which is inclined relative to a housing wall in which the housing opening is provided and into which the housing opening opens.
  • the partition is arranged centrally with respect to the housing opening.
  • the dividing wall is designed as a partial ring surface projecting from the substantially circular housing opening on the side radially outward with respect to the axis of rotation of the radial fan in the direction of the radial fan.
  • Another embodiment is characterized in that the partition is essentially flat and extends in the radial direction of the radial fan.
  • the partition is ploughshare-like, the share edge lying in a plane containing the axis of the radial fan and the share surfaces diverging with respect to the axis of rotation of the radial fan to the outside.
  • the housing opening is at least partially swept by the radial fan.
  • the fan produces a gas flow, possibly on the inside of the guide surface provided, which is directed in the direction of rotation.
  • the direction of rotation of the fan can be changed at regular intervals, particularly when used in cooking appliances, so that the direction of the gas flow also changes accordingly.
  • Two gas flows circulating on the guide surface are thus generated alternately.
  • the gas is pressed onto a partition in the discharge area and can be discharged from the housing through a housing opening.
  • control it can be provided that the housing opening can be at least partially opened depending on the content of the gas in the excess component and / or is closable.
  • the control can be carried out, for example, using the method described in German patent application P 42 06 845.2-52.
  • the guide surface it is not necessary for the guide surface to be guided around the entire circumference of the fan, as long as it is only ensured that the flow develops with the desired properties.
  • At least one flap, a lamella closure, an iris-like closure or the like can be provided to close the housing opening.
  • the flap there is the possibility either to arrange it vertically or to provide that two flaps move towards or away from each other in the manner of a double-leaf sliding door.
  • the discharge of the gas with the gas component to be removed takes place effectively if the device has a shaft with an outlet which is inclined relative to the housing wall in which the housing opening is provided and into which the housing opening opens.
  • the flap In order to be able to close the opening essentially in a gastight manner, the flap can be guided in appropriately designed rails.
  • a cleat is also attached to the flap, which slides the flap in the shaft, it can also be achieved that, for example, by the cleat's own elasticity or one additionally on the cleat provided spring, a pressure of the flap is exerted on the opening area.
  • the partition is arranged centrally with respect to the housing opening.
  • an essential feature of the inventive concept is that even if no guide surface surrounding the radial fan is provided, a gas flow can be directed towards the housing opening to the desired extent by means of the partition serving as an aerodynamic guide surface, so that for example, moisture can be removed from the cooking space atmosphere or the like with the separated gas volume as required.
  • a motor 2 is attached to a housing wall 1, the shaft of which through the housing wall 1 into the interior of the housing, not shown here, with a fan wheel 3 attached to this shaft.
  • a fan surface 4 is provided concentrically surrounding the fan wheel 3, which partially closes with the housing wall 1 in the exemplary embodiment shown here.
  • a discharge area 40 is provided in the lower area of the guide surface 4, which is opposite a housing opening 10 in the housing wall 1.
  • the housing opening 10 can be closed by means of a flap 20 which can be moved via a lever mechanism, of which only one bracket 30 is shown here.
  • Communicated with the housing opening 10, a shaft 12 is arranged, which is inclined slightly inwards relative to the housing wall 1 in the direction of the housing.
  • the flap 20 runs on a shaft wall, sliding through a stud 28.
  • the shaft 12 opens into an outlet 14. This is arranged essentially perpendicular to the shaft 12, so that moisture which condenses in the shaft 12 can run off due to gravity.
  • Fig. 2 shows a second embodiment of a device according to the present invention in detail.
  • the guide surface 4 is designed here so that it only surrounds the fan wheel 3 in a lower region. Otherwise, the structure corresponds to that of FIG. 1.
  • a spring 29 provided on the stud 28 attached to the flap 20 ensures that the flap 20 is pressed onto the opening 10.
  • the guide surface 4 has on its side facing the center of the arrangement a folded fold 44, which further concentrates the gas flow on the inside of the guide surface 4 causes.
  • a partition 42 is arranged on the guide surface 4 in a substantially vertical direction.
  • the flow generated by the fan wheel, not shown in FIG. 3, which propagates along the guide surface 4 is diverted at the partition 42 and guided in the direction of the housing opening 10.
  • the guide surface 4 is fastened to the housing wall with flanges 46, 48, and fastening options can also be provided in the discharge area 40.
  • 4 heating coils 5, 6 are arranged outside the guide surface.
  • the flap 20 is connected to a bracket 30 of a lever mechanism, which is also connected to a linkage and additional required mechanism 36 via a pivot point 32.
  • the entire control system both mechanical and electronic, can thus be arranged outside the housing in which the gas volume is located.
  • a sliding aid 22 for the flap 20 is provided in the upper region of the shaft 12.
  • the flap 20 itself runs trapezoidal. By means of the mechanics, it can be placed more or less far into the shaft 12, guided in rails 24, 26, the housing opening 10 being opened more or less in accordance with the specified specifications. Since the shaft 12 is generally at a lower temperature than the heated interior of the housing, the moisture precipitates in the shaft and runs into the outlet 14, from where it can be drained through an opening 16.
  • the mechanism for lifting and lowering the flap 20 must be designed so that it ensures the trouble-free functioning of the device. However, there is no need for the limitation shown in FIG. 3.
  • This device is preferably used to control the moisture content of a cooking chamber atmosphere. As soon as an excessively high moisture content is determined, the flap 20 is opened, the pressure built up by the guide surface 4 ensuring that the cooking chamber atmosphere is forced away. Dry air flowing in lowers the moisture content inside the cooking space. If the moisture content should remain constant or even be increased, the flap 20 is closed. If necessary, measures can be provided which make it possible to supply moisture specifically to the interior of the cooking space.

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Ventilation (AREA)
  • Glass Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)
EP93102950A 1992-03-04 1993-02-25 Dispositif pour évacuer une composante de gaz Expired - Lifetime EP0559080B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/025,999 US5370498A (en) 1992-03-04 1993-03-04 Apparatus for elimination of gas constituents
JP04407393A JP3437597B2 (ja) 1992-03-04 1993-03-04 ガス成分除去装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4206847 1992-03-04
DE4206847 1992-03-04

Publications (2)

Publication Number Publication Date
EP0559080A1 true EP0559080A1 (fr) 1993-09-08
EP0559080B1 EP0559080B1 (fr) 1996-11-20

Family

ID=6453225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102950A Expired - Lifetime EP0559080B1 (fr) 1992-03-04 1993-02-25 Dispositif pour évacuer une composante de gaz

Country Status (6)

Country Link
EP (1) EP0559080B1 (fr)
AT (1) ATE145468T1 (fr)
DE (1) DE59304500D1 (fr)
DK (1) DK0559080T3 (fr)
ES (1) ES2094392T3 (fr)
GR (1) GR3021756T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926449A1 (fr) * 1997-12-23 1999-06-30 eloma GmbH Grossküchentechnik Procédé pour déshumidifier un espace à cuire d'un dispositif pour cuire à la vapeur et dispositif approprié

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2103593C2 (de) * 1970-01-30 1982-07-01 Nils Randolf Byske Bergmark Dunstabzugshaube für Küchen
EP0301640A1 (fr) * 1987-07-27 1989-02-01 ELICA S.p.A. Hotte aspirante de cuisine à grande surface de collection de fumées

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2103593C2 (de) * 1970-01-30 1982-07-01 Nils Randolf Byske Bergmark Dunstabzugshaube für Küchen
EP0301640A1 (fr) * 1987-07-27 1989-02-01 ELICA S.p.A. Hotte aspirante de cuisine à grande surface de collection de fumées

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926449A1 (fr) * 1997-12-23 1999-06-30 eloma GmbH Grossküchentechnik Procédé pour déshumidifier un espace à cuire d'un dispositif pour cuire à la vapeur et dispositif approprié
US6070517A (en) * 1997-12-23 2000-06-06 Eloma Gmbh Grobkuchentechnik Removing dampness from the cooking space of a pressure cooker and device herefor
AU739223B2 (en) * 1997-12-23 2001-10-04 Eloma Gmbh Grosskuchentechnik Method of removing dampness from the cooking space of a pressure cooker and device herefor

Also Published As

Publication number Publication date
GR3021756T3 (en) 1997-02-28
DE59304500D1 (de) 1997-01-02
DK0559080T3 (da) 1997-05-05
ES2094392T3 (es) 1997-01-16
EP0559080B1 (fr) 1996-11-20
ATE145468T1 (de) 1996-12-15

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