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
  • F24C15/2035—Arrangement or mounting of filters
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S55/00—Gas separation
  • Y10S55/36—Kitchen hoods

Definitions

• the invention is directed to a device for dispensing an odor-destroying substance into an air stream, particularly in kitchen extractor hoods.
• Extractor hoods especially kitchen extractor hoods, are today usually equipped with an activated carbon filter to remove odors, which is attached in front of the suction grille of the suction fan.
• activated carbon filters A disadvantage of the use of activated carbon filters is that, on the one hand, they greatly increase the flow resistance of the entire extractor hood, which leads to oversizing of the suction fan, and, on the other hand, the mode of operation of such filters is controversial.
• the oversizing of the suction blower also leads to an additional noise pollution of the environment, on the other hand, a degree of saturation or a controlled monitoring of the filter effect with activated carbon filters is not possible.
• the object of the invention is to provide a solution with which an odor-destroying substance can be introduced into an air flow, in particular into the suction flow in kitchen extractor hoods. Refillability should also be ensured, as well as reducing the flow resistance to a minimum in order to be able to use smaller fans.
• This task is the beginning of a device Specified type according to the invention by an open to the air flow generated by a fan downstream for the odor-destroying substance and guide elements for forced guidance of at least part of the air flow past the open area of the reservoir.
• a reservoir within the air flow has the advantage that its design can be made such that simply by sweeping the sucked-in air with the undesirable odorous substances, an odor-reducing or reducing substance can be introduced into the air flow without the high, necessary in the prior art, lines of the suction fan would be necessary.
• odor-killing substances can e.g. are solid particles, gases, but especially liquids.
• the invention provides that the reservoir is designed as a vessel that is open to one side with a filling that holds a liquid, and that the guide elements are designed as a wall that covers the vessel at a distance and has through-flow openings, which has proven to be particularly expedient , if the vessel is designed as an open circular channel with a felt filling, which is concentrically spaced from the hood-shaped wall is covered, on the one hand providing a comparatively large reservoir, and on the other hand the channel shape gives the possibility of providing by-pass through-openings which greatly reduce the flow resistance of the entire device.
• the hood-shaped wall forms the guide element for the air flow and, depending on the requirements, can be designed like a nozzle or the like in order to achieve the necessary flow velocities past the reservoir.
• the invention provides that the hood-shaped wall is designed as a flat plate with upstream edges and with openings arranged in segments, which can optionally be opened and closed by a concentric cover plate.
• the air flow through the device can be increased or decreased by correspondingly opening or closing the openings through the cover plate, which leads to an economical use of the liquid, odor-killing substance.
• a structurally simple solution consists in that the vessel and the hood-shaped wall can be fastened concentrically to a common fastening element within an air flow channel, whereby before It can also be partially provided that a suction gap that tapers downstream is formed between the vessel and the hood-shaped wall.
• the device elements i.e. In particular, automatically regulate and control the setting of the suction openings and thus the amount of the air flow flowing past the reservoir.
• the invention provides in a very simple embodiment that the attachment is arranged concentrically on the intake grille of the fan of a kitchen extractor hood, the cover disk controlling the segment-by-segment openings in the hood-shaped wall being able to selectively adjust the flow cross-section. tes partially penetrates the housing wall of the hood.
• the cover plate has a filling opening for refilling liquid odor-eliminating substance into the film filling of the vessel, which corresponds in at least one position to an opening in the hood-shaped wall for refilling.
• the container for the odor-destroying substance is equipped with a device for indicating the fill level. This regulation or display can be caused, for example, by moisture sensor or due to weight differences between filled and empty reservoirs.
• the reservoir e.g. is suspended via a spring in such a way that when the fill level is insufficient, electrical contacts close via the spring, which are held in the open position by the weight of the odor-eliminating substance when filled.
• the device is fastened to the suction grille 3 of a suction fan (not shown in more detail) within an extractor hood 2 which is only indicated.
• the attachment is made such that an adjustable gap 5 remains free for the passage of untreated air between a cover plate 4 of the device 1 and the intake grille 3 described in more detail below.
• the device 1 essentially consists of a hood-shaped wall 7, which is arranged concentrically around a central axis 6 and is designed as a flat plate, with an upstream edge 8 which covers a reservoir 9 arranged concentrically on the inside.
• the reservoir 9 is designed as a downstream circular groove with a felt filling 10 and is axially displaceably fastened centrally to the central axis 6.
• the outer wall of the reservoir 9, designated 11, with the edge 8 of the hood-shaped, plate-like cover wall 7 forms an annular flow channel 12 that tapers downstream.
• the covering wall 7 is provided with segments, as can be seen in FIG 2 results, preferably 60 ° segments, equipped with openings 13 which can be partially or completely closed in the cover 4 by corresponding segments, designated 14 in FIG. 2.
• the hood-shaped wall 7 is equipped with a filling opening 15 for refilling a liquid odor-killing substance, the cover plate 4 being equipped with at least one corresponding opening. E.g. in the form of an uncovered segment section, which is designated by 16 in FIG. 2.
• a level indicator that is difficult 1 two electrical contacts 17 and 18 are shown, which are kept apart by the weight of the reservoir 9 filled with the odor-killing liquid.
• a hinted spring 19 acts against gravity and tries to lift the reservoir in the direction of the contact 17. If the smell-killing liquid is gradually used up, the weight of the reservoir 9 becomes lower, ie the spring 19 is able to lift the reservoir. If the fill level falls below a certain level, the contact 18 comes into contact with the contact 17 and closes a circuit which, for example via an optical or acoustic display, shows the user of the device that the required fill level has been undershot, so that refilling is necessary.
• the cover plate 7 To adjust the flow openings or for optional covering by the cover plate 7, it can be provided that this is larger in diameter than the largest diameter of the device 1 and with a partial area 20, the housing, designated in Fig. 2 with 21, the extractor hood 2 enforced. Corresponding markings on the edge area of the cover plate 4 can be used to make the user recognizable from the outside in which setting state the device 1 is located.
• the described embodiment can be modified in many ways without departing from the basic idea of the invention.
• the invention is not restricted to a special shape of the reservoir and an arrangement within the device.
• a larger-area, impregnable felt disc or the like can be provided.
• Individual vessels arranged in a star shape can also be arranged below a common hood, the assignment of which to the air flow can be changed in each case.
• the invention is also not limited to a special level indicator.
• sensor elements can be provided that react to moisture, to organic substances or e.g. to the evaporation cold or the like caused by evaporation.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
• Prevention Of Fouling (AREA)
• Ventilation (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6122302

Family Applications (1)

Country Status (4)

Families Citing this family (12)

Family Cites Families (15)

• 1981
  • 1981-01-08 DE DE3100320A patent/DE3100320C2/de not_active Expired
  • 1981-12-19 AT AT81110624T patent/ATE12051T1/de active
  • 1981-12-19 DE DE8181110624T patent/DE3169214D1/de not_active Expired
  • 1981-12-19 EP EP81110624A patent/EP0072377B1/fr not_active Expired
  • 1981-12-30 US US06/335,842 patent/US4444720A/en not_active Expired - Fee Related

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