NL2031430B1 - Kitchen Air Extraction Canopy and Extraction Element and Extraction Duct therefor - Google Patents

Kitchen Air Extraction Canopy and Extraction Element and Extraction Duct therefor Download PDF

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Publication number
NL2031430B1
NL2031430B1 NL2031430A NL2031430A NL2031430B1 NL 2031430 B1 NL2031430 B1 NL 2031430B1 NL 2031430 A NL2031430 A NL 2031430A NL 2031430 A NL2031430 A NL 2031430A NL 2031430 B1 NL2031430 B1 NL 2031430B1
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Netherlands
Prior art keywords
extraction
gas
air
kitchen space
surface area
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NL2031430A
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Dutch (nl)
Inventor
Joseph Vianen Hendrikus
Original Assignee
Randolph Beleggingen B V
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Priority to NL2031430A priority Critical patent/NL2031430B1/en
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Publication of NL2031430B1 publication Critical patent/NL2031430B1/en

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    • 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
    • F24C15/2078—Removing cooking fumes movable

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)

Abstract

A kitchen air extraction canopy for air extraction from above a cooking facility in a kitchen space comprises an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; and an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area. The canopy has an extraction connection with the underpressure enclosure for connection to a first end of a duct that has a second end for positioning in the kitchen space to locally draw of a gas and/or vapour from a gas and/or vapour source in the kitchen space, such as a steam oven.

Description

Kitchen Air Extraction Canopy and Extraction Element and Extraction Duct therefor
FIELD OF THE INVENTION
[01] The invention relates to a kitchen air extraction canopy, and corresponding method, for air extraction from above a cooking facility in a kitchen space, wherein the canopy comprises an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; and an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area.
BACKGROUND OF THE INVENTION
[02] Kitchen air extraction canopies are well known and are widely used in private and professional kitchens. The air extraction canopy extracts air from the kitchen space through the extraction surface area of the canopy into an exhaust system. The extraction surface area contains filters through which the air is guided for filtering out grease and possibly other contaminants in the extracted air, and is a delimiting wall of the underpressure enclosure of the extraction canopy. The underpressure enclosure is in fluid communication with an exhaust system that generally has one or more exhaust ventilators for drawing air from the underpressure enclosure of the canopy to keep it at an underpressure with respect to the kitchen space so that air is extracted from the kitchen space to the underpressure enclosure of the canopy.
[03] The kitchen air extraction canopy is mostly at arranged above a cooking stove for drawing of any gases, vapours and fumes from the cooking pots, etcetera on the cooking stove. Other cooking apparatuses may arranged under or near the kitchen air extraction canopy for drawing of any gases, vapours and fumes from such apparatuses as well. Such cooking apparatuses can be ovens, combi ovens, steamers, steam ovens, etcetera. Some of such apparatuses, like the steam ovens and combi steamers, work on the basis of steam, that may be discharged from the respective apparatus through a vapour outlet. The vapour outlet is generally provide at the top side of the respective apparatus.
[04] Vapour discharged from the vapour outlet will be drawn towards the kitchen air extraction canopy when in operation. However, the amount of vapour or steam discharged from the vapour or steam outlet of the respective apparatus can be quite high, and some fraction may escape from air extraction by the kitchen canopy and even condense at relatively cool surface of the canopy and elsewhere. Condensed vapour can subsequently drop down, which can cause unwanted and even dangerous situations, that are better prevented.
SUMMARY OF THE INVENTION
[05] It is an objective of the invention to provide a kitchen air extraction canopy and method that allows for locally drawing of a gas or vapour.
[06] It is another or alternative objective of the invention to provide a kitchen extraction canopy and method that efficiently draws of gas or vapour discharged from an apparatus outlet.
[07] It is yet another or alternative objective of the invention to provide a kitchen air extraction canopy and method that prevents condensation of steam or vapour discharged from an outlet of, for instance, a steam oven or combi steamer.
[08] It is yet another or alternative objective of the invention to provide …
[09] In an aspect the invention provides a kitchen air extraction canopy for air extraction from above a cooking facility in a kitchen space, wherein the canopy comprises - an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; - an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area; and - an extraction connection with the underpressure enclosure for connection to a first end of a duct that has a second end for positioning in the kitchen space to locally draw of a gas and/or vapour from a gas and/or vapour source in the kitchen space, such as a steam oven.
[10] in an embodiment of the canopy, the canopy comprises an extraction connection element having the extraction connection and arranged in the extraction surface area.
[11] In an embodiment of the canopy, the extraction connection element is removably arranged in the extraction surface area.
[12] In an aspect the invention provides an extraction connection element for a kitchen air extraction canopy for air extraction from above a cooking facility in a kitchen space, wherein the canopy comprises - an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; and - an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area, wherein the extraction connection element is configured for arrangement in the extraction surface area, and comprises an extraction connection with the underpressure enclosure, when arranged in the extraction surface area, for connection to a first end of a duct that has a second end for positioning in the kitchen space to locally draw of a gas and/or vapour from a gas and/or vapour source in the kitchen space, such as a steam oven.
[13] In an embodiment of the extraction connection element, the extraction connection element is configured for removable arrangement in the extraction surface area.
[14] In an embodiment of the canopy or the extraction connection element, the canopy or the extraction connection element comprises an extraction duct having a first end connected to the extraction connection and a second end for positioning in the kitchen space to locally draw of a gas and/or steam from a gas and/or steam source in the kitchen space, such as a steam oven.
[15] In an aspect the invention provides an extraction duct for a kitchen air extraction canopy for air extraction from above a cooking facility in a kitchen space, wherein the canopy comprises - an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; - an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area; and - an extraction connection with the underpressure enclosure for connection to a first end of the extraction duct that has a second end for positioning in the kitchen space to locally draw of a gas and/or vapour from a gas and/or vapour source in the kitchen space, such as a steam oven.
[16] In an embodiment of the canopy, the extraction connection element or the extraction duct, the second end of the extraction duct comprises a funnel shape having an increasing cross-section in a direction away from the first end.
[17] In an embodiment of the canopy, the extraction connection element or the extraction duct, the extraction duct comprises a flexible tube.
[18] In an embodiment of the canopy, the extraction connection element or the extraction duct, the extraction duct comprises a stainless steel tube or duct.
[19] In an embodiment of the canopy, the extraction connection element or the extraction duct, the canopy or the extraction connection element comprises a gas or vapour detector arranged at the extraction connection for detecting a gas and/or vapour discharged from the extraction connection into the underpressure enclosure.
[20] In an embodiment of the canopy, the extraction connection element or the extraction duct, the gas or vapour detector is a hygrostat.
[21] In an aspect the invention provides a extraction method for locally drawing of a gas and/or vapour from a gas and/or vapour source in the kitchen space, such as a steam oven, wherein the method comprises
- providing a kitchen air extraction canopy for air extraction from above a cooking facility in the kitchen space, wherein the canopy comprises -- an underpressure enclosure, in which, in use, an underpressure with respect to the kitchen space is maintained through fluid communication with an exhaust system drawing air from the underpressure enclosure; and -- an extraction surface area through which, in use, air is extracted from the kitchen space to the underpressure enclosure, especially wherein the extraction area comprises or is configured to comprise one or more filter elements for filtering air extracted through the filter element(s) in the extraction surface area; - providing a cooking apparatus having a gas and/or vapour outlet near the canopy; - connecting a first end of an extraction duct in fluid connection to the underpressure enclosure; - providing a second end of the extraction duct near the gas and/or vapour outlet for locally drawing of gas and/or steam from the gas and/or steam outlet in the kitchen space; - operating the canopy; and - operating the cooking apparatus having the gas and/or vapour outlet.
[22] In an embodiment of the method, the canopy is provided with an extraction connection with the underpressure enclosure for connection to the first end of the extraction duct, and connecting the first end of the extraction duct to the extraction connection.
[23] In an embodiment of the method, the cooking apparatus having the gas and/or vapour outlet is arranged below the canopy.
[24] In an embodiment of the method, the second end of the extraction duct is provided over the gas and/or vapour outlet of the cooking apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
[25] Further features and advantages of the invention will become apparent from the description of the invention by way of non-limiting and non-exclusive embodiments. These embodiments are not to be construed as limiting the scope of protection. The person skilled in the art will realize that other alternatives and equivalent embodiments of the invention can be conceived and reduced to practice without departing from the scope of the present invention. Embodiments of the invention will be described with reference to the accompanying drawings, in which like or same reference symbols denote like, same or corresponding parts, and in which
Figure 1 shows a cross-section of a kitchen air extraction canopy according to the invention in a kitchen space above a cooking facility;
Figure 2 shows a front view on the kitchen air extraction canopy of figure 1;
Figures 3, 4 and 5 shows various perspective views of an extraction element having an extraction duct according to the invention.
DETAILED DESCRIPTION OF EMBODIMENTS
[26] Figures 1 and 2 show a kitchen air extraction canopy 1 of the invention. The canopy 1 has a housing 2 and is mounted against a wall W of the kitchen space K and suspended by a suspension 4 from a ceiling of the kitchen space. The canopy 1 is mounted above a steamer or steam oven O that has a steam outlet S as a vapour source in the kitchen space K. In operation, the canopy 1 extracts air from the kitchen space K. The extracted air first enters from the kitchen space K into cavity 3 of the canopy within its housing 2. Various design options are available to trap air inside the cavity 3 for enhanced extraction. Subsequently, the air is extracted from the cavity 3 through filters 21 mounted in extraction surface area 20 of the canopy into underpressure enclosure 10 within the housing 2 of the kitchen air extraction canopy 1. The underpressure enclosure 10 is in fluid connection with an exhaust system 15, in operation, drawing air from the underpressure enclosure 10. The exhaust system 15 can take various forms, and generally comprises a ducting system of sufficient cross-section and one or more exhaust ventilators (not shown) mounted in the ducting system.
[27] The exhaust system 15, in operation, draws air from the underpressure enclosure 10 to provide an underpressure in the underpressure enclosure 10 with respect to a pressure in the cavity 3 and the kitchen space K. As a result, air is extracted through the filters 21 mounted in the extraction surface area 20 from the cavity 3 into the underpressure enclosure 10, and from the kitchen space k into the cavity 3.
[28] Figures 1 and 2 show a steam oven O positioned below the air extraction canopy 1 for drawing of steam discharged from steam outlet S as a vapour source in the kitchen space K. The kitchen air extraction canopy 1 is provided with an extraction connection element 30 with an extraction duct 32 to efficiently draw of steam discharged from the steam outlet S through the extraction duct 32. The extraction connection element 30 is mounted in between two filters 21 of the embodiment of the canopy 1 shown in figures 1 and 2. Other arrangements can be envisioned as well. Figures 3, 4 and 5 shows various perspective views on the extraction connection element 30 as such.
[29] The extraction connection element 30 in the embodiment shown has a mounting part 34 for mounting in the extraction surface area 20 adjacent filter(s) 21 to have the extraction surface area 20 fully provided with filters 21 and the mounting part 34 of the extraction connection element 30 adjacent to one another. The extraction connection element 30 has an extraction connection 31 with the underpressure enclosure 10 on the mounting part 34. A first end 32.1 of the extraction duct 32 is connected to the extraction connection 31. A second end 32.1 of the extraction duct 32 is positioned over the steam outlet S of the steam oven O. The second end 32.2 comprises a funnel shape 33 with an increasing cross-section in a direction away from the first end 32.1. The cross-section at the second end 32.2 should be sufficiently large to fit over the steam outlet S, while the cross-section of the extraction duct between the first and second ends should be chosen for efficient and sufficient extraction of gas and/or vapour from the gas and/or vapour source where the second end 32.2 of the extraction duct 32 is provided.
[30] The extraction connection element 30 is removably provided in the extraction surface area 20 to be mounted in there as required. To allow mounting of the extraction connection element 30 when required, the extraction surface area 20 of the kitchen air extraction canopy 1 can normally be provided with a blind plate of equal external dimensions as the extraction connection element 30. Another option would be to provide filter elements 21 of various widths to allow for mounting of the extraction connection element 30 by replacing a filter element for one with a smaller width at the same time. In the embodiment shown, the extraction duct 32 is a flexible tube, especially made from stainless steel, to allow positioning of the second end 32.2 of the extraction duct as required over the respective gas and/or vapour source. The length of the extraction duct 32 can be selected as required. One may provide for various lengths of extraction duct or tube to select a length as required and connect the selected length of extraction duct 32 to the extraction connection 31.
[31] Alternatively, the extraction duct 32 can be provided as a single unit with the mounting part 34. In another alternative embodiment, the extraction duet can be provided as a rigid duct of a required length and shape. In yet another alternative embodiment, the funnel shape 33 at the second end can be provided as a separate element to be mounted on a flexible or rigid extraction tube of a desired length and shape, as required.
[32] The kitchen air extraction canopy 1 is further provided with a gas or vapour detector 40 in the form of hygrostat at the extraction connection 31 for detecting a gas and/or vapour discharged from the extraction connection 31 into the underpressure enclosure 10.
The operation of the exhaust system 15 connected to the underpressure enclosure 10 can be operated in dependence of the reading of the detector 40. A ventilator speed of the exhaust system 15 can be operated in dependence of the detector reading. The exhaust system 15 could be switched on as well when some gas and/or vapour having passed the extraction duct 32 would be detected by the gas and/or vapour detector 40. In the embodiment shown, the gas and/or vapour detector 40 is mounted inside underpressure enclosure 10 on the housing 2 of the canopy 1. In an alternative embodiment, the detector 40 may be mounted on the extraction connection element 30.
[33] In an alternative embodiment, the extraction connection 31 for connecting the extraction duct 32 could be provided on the housing 2 of the canopy as well. The invention relates to a kitchen air extraction canopy 1, to an extraction connection element 30 that may be provided to an existing kitchen air extraction canopy, to an extraction duct 32 that may be mounted on any air extraction canopy provided with an extraction connection 31 as described, and any method of adapting any air extraction canopy as defined by the scope of the claims.
[34] The figures show that the canopy is mounted above a steamer or steam oven O.
Generally, the canopy may also be mounted above a cooking stove together with the steamer or steam oven O or other apparatus, which is not shown in the figures. The canopy may just be provided over the steamer or steam oven O, or any other cooking apparatus having a gas and/or vapour outlet, as well.
Alternatively, the steamer or steam oven O (or any other apparatus having the steam and/or vapour outlet S) may be positioned near the canopy 1 while the second end 32.2 of the extraction duct 32 of the extraction connection element 30 is provided above and over the steam and/or vapour outlet S.

Claims (14)

CONCLUSIESCONCLUSIONS 1. Een keukenluchtafzuigkap (1) voor luchtafzuiging van boven een kookvoorziening in een keukenruimte (K), waarbij de kap omvat: - een onderdrukomhulling (10), waarin, in gebruik, een onderdruk ten opzichte van de keukenruimte wordt gehandhaafd door fluidumverbinding met een uitlaatsysteem (15) dat lucht aanzuigt uit de onderdrukomhulling; - een afzuigoppervlaktegebied (20) waardoorheen in gebruik lucht uit de keukenruimte wordt afgezogen naar de onderdrukomhulling, in het bijzonder waarbij het afzuigoppervlaktegebied omvat of is ingericht voor het omvatten van een of meer fiterelementen (21) voor het filteren van lucht afgezogen doorheen de filterelement(en) in het afzuigoppervlaktegebied; en - een afzuigaansluitelement (30) aangebracht in het afzuigoppervlaktegebied (20), waarbij het afzuigaansluitelement (30) heeft een afzuigaansluiting (31) met de onderdrukomhulling (10) voor aansluiting op een eerste uiteinde (32.1) van een kanaal (32) dat een tweede uiteinde (32.2) heeft voor positionering in de keukenruimte (K) voor het plaatselijk afzuigen van een gas en/of damp uit een gas- en/of dampbron (S) in de keukenruimte, zoals een stoomoven.1. A kitchen air extractor hood (1) for extracting air from above a cooking facility in a kitchen space (K), wherein the hood comprises: - a negative pressure enclosure (10), in which, in use, a negative pressure with respect to the kitchen space is maintained by fluid connection with a exhaust system (15) that draws air from the negative pressure enclosure; - an extraction surface area (20) through which, in use, air from the kitchen space is extracted to the under-pressure enclosure, in particular wherein the extraction surface area comprises or is designed to comprise one or more filter elements (21) for filtering air extracted through the filter element ( and) in the extraction surface area; and - an extraction connection element (30) arranged in the extraction surface area (20), wherein the extraction connection element (30) has an extraction connection (31) with the negative pressure casing (10) for connection to a first end (32.1) of a duct (32) that has a second end (32.2) for positioning in the kitchen space (K) for local extraction of a gas and/or vapor from a gas and/or vapor source (S) in the kitchen space, such as a steam oven. 2. De kap volgens de voorgaande conclusie, waarbij het afzuigaansluitelement verwijderbaar in het afzuigoppervlaktegebied is aangebracht.The hood according to the preceding claim, wherein the extraction connection element is removably arranged in the extraction surface area. 3. Een afzuigaansluitelement (30) voor een keukenluchtafzuigkap (1) volgens willekeurig welke van de voorgaande conclusies voor luchtafzuiging van boven een kookvoorziening in een keukenruimte (K), waarbij de kap omvat - een onderdrukomhulling (10), waarin, in gebruik, een onderdruk ten opzichte van de keukenruimte wordt gehandhaafd door fluidumverbinding met een uitlaatsysteem (15) dat lucht aanzuigt uit de onderdrukomhulling; en - een afzuigoppervlaktegebied (20) waardoorheen in gebruik lucht uit de keukenruimte wordt afgezogen naar de onderdrukomhulling, waarbij het afzuigoppervlaktegebied omvat of is ingericht voor het omvatten van een of meer fiterelementen (21) voor het filteren van lucht afgezogen doorheen de filterelement(en) in het afzuigoppervlaktegebied, waarbij het afzuigaansluitelement (30) voor plaatsing in het afzuigoppervlaktegebied (20) is ingericht en een afzuigaansluiting (31) omvat met de onderdrukomhulling (10), indien geplaatst in het afzuigoppervlaktegebied, voor aansluiting op een eerste uiteindeAn extraction connection element (30) for a kitchen air extractor hood (1) according to any of the preceding claims for air extraction from above a cooking facility in a kitchen space (K), wherein the hood comprises - a negative pressure enclosure (10), in which, in use, a negative pressure relative to the kitchen space is maintained by fluid connection with an exhaust system (15) that draws air from the negative pressure enclosure; and - an extraction surface area (20) through which, in use, air is extracted from the kitchen space to the under-pressure enclosure, wherein the extraction surface area comprises or is designed to comprise one or more filter elements (21) for filtering air extracted through the filter element(s) in the extraction surface area, wherein the extraction connection element (30) is designed for placement in the extraction surface area (20) and comprises an extraction connection (31) with the negative pressure casing (10), if placed in the extraction surface area, for connection to a first end (32.1) van een kanaal (32) dat een tweede uiteinde (32.2) heeft voor positionering in de keukenruimte (K) voor het plaatselijk afzuigen van een gas en/of damp uit een gas- en/of dampbron (S) in de keukenruimte, zoals een stoomoven.(32.1) of a duct (32) that has a second end (32.2) for positioning in the kitchen space (K) for the local extraction of a gas and/or vapor from a gas and/or vapor source (S) in the kitchen space , such as a steam oven. 4. Een afzuigaansluitelement volgens de voorgaande conclusie, met het kenmerk, dat het afzuigaansluitelement (30) is ingericht voor verwijderbaar plaatsen in het afzuigoppervlaktegebied (20).An extraction connection element according to the preceding claim, characterized in that the extraction connection element (30) is designed for removable placement in the extraction surface area (20). 5. De kap of het afzuigaansluitelement volgens een der voorgaande conclusies, waarbij de kap of het afzuigaansluitelement een afzuigkanaal (32) omvat met een eerste uiteinde (32.1) aangesloten op de afzuigaansluiting (31) en een tweede uiteinde (32.2) voor positionering in de keukenruimte (K) voor het plaatselijk afzuigen van een gas en/of stoom uit een gas- en/of stoombron (S) in de keukenruimte, zoals een stoomoven.5. The hood or the extraction connection element according to any one of the preceding claims, wherein the hood or the extraction connection element comprises an extraction duct (32) with a first end (32.1) connected to the extraction connection (31) and a second end (32.2) for positioning in the kitchen space (K) for local extraction of gas and/or steam from a gas and/or steam source (S) in the kitchen space, such as a steam oven. 6. Een afzuigkanaal (32) voor een keukenluchtafzuigkap (1) voor gebruik met een keukenafzuigkap (1) volgens willekeurig welke van de voorgaande conclusies en/of een afzuigaansluitelement (30) volgens willekeurig welke van de voorgaande conclusies voor luchtafzuiging van boven een kookvoorziening in een keukenruimte (K), waarbij de kap omvat - een onderdrukomhulling (10), waarin, in gebruik, een onderdruk ten opzichte van de keukenruimte wordt gehandhaafd door fluidumverbinding met een uitlaatsysteem (15) dat lucht aanzuigt uit de onderdrukomhulling; - een afzuigoppervlaktegebied (20) waardoorheen in gebruik lucht uit de keukenruimte wordt afgezogen naar de onderdrukomhulling, waarbij het afzuiggebied omvat of is ingericht voor het omvatten van een of meer fiterelementen (21) voor het filteren van lucht afgezogen doorheen de filterelement(en) in het afzuigoppervlaktegebied; en - een afzuigaansluitelement (30) aangebracht in het afzuigoppervlaktegebied (20), waarbij het afzuigaansluitelement (30) heeft een afzuigaansluiting (31) met de onderdrukomhulling (10) voor aansluiting op een eerste uiteinde (32.1) van het afzuigkanaal (32) dat een tweede uiteinde (32.2) heeft voor positionering in de keukenruimte voor het plaatselijk afzuigen van een gas en /of damp uit een gas- en/of dampbron (8) in de keukenruimte, zoals een stoomoven.6. An extraction duct (32) for a kitchen extractor hood (1) for use with a kitchen extractor hood (1) according to any of the preceding claims and/or an extraction connection element (30) according to any of the preceding claims for air extraction from above a cooking facility in a kitchen space (K), wherein the hood comprises - a negative pressure enclosure (10), in which, in use, a negative pressure with respect to the kitchen space is maintained by fluid connection with an exhaust system (15) that draws air from the negative pressure enclosure; - an extraction surface area (20) through which, in use, air is extracted from the kitchen space to the under-pressure enclosure, wherein the extraction area comprises or is designed to comprise one or more filter elements (21) for filtering air extracted through the filter element(s) in the extraction surface area; and - an extraction connection element (30) arranged in the extraction surface area (20), wherein the extraction connection element (30) has an extraction connection (31) with the negative pressure casing (10) for connection to a first end (32.1) of the extraction duct (32) that has a second end (32.2) for positioning in the kitchen space for local extraction of a gas and/or vapor from a gas and/or vapor source (8) in the kitchen space, such as a steam oven. 7. De kap, het afzuigaansluitelement of de afzuigleiding volgens een van de voorgaande conclusies, waarbij het tweede uiteinde (32.2) van de afzuigleiding (32) een trechtervorm (33) omvat met een toenemende dwarsdoorsnede in een richting weg van het eerste uiteinde (32.1).The hood, the extraction connection element or the extraction duct according to any one of the preceding claims, wherein the second end (32.2) of the extraction duct (32) comprises a funnel shape (33) with an increasing cross-section in a direction away from the first end (32.1 ). 8. De kap, het afzuigaansluitelement of de afzuigleiding volgens een der voorgaande conclusies, waarbij de afzuigleiding (32) een flexibele buis omvat.The hood, the extraction connection element or the extraction line according to any one of the preceding claims, wherein the extraction line (32) comprises a flexible tube. 9. De kap, het afzuigaansluitelement of de afzuigleiding volgens een der voorgaande conclusies, waarbij de afzuigleiding (32) een RVS buis of leiding omvat.9. The hood, the extraction connection element or the extraction line according to any one of the preceding claims, wherein the extraction line (32) comprises a stainless steel pipe or line. 10. De kap, het afzuigaansluitelement of de afzuigleiding volgens een van de voorgaande conclusies, waarbij de kap of het afzuigaansluitelement een bij de afzuigaansluiting (31) aangebrachte gas- of dampdetector (40) omvat voor het detecteren van een gas en/of damp afgevoerd uit de afzuigaansluiting in de onderdrukbehuizing (10).10. The hood, the extraction connection element or the extraction line according to any one of the preceding claims, wherein the hood or the extraction connection element comprises a gas or vapor detector (40) arranged at the extraction connection (31) for detecting a gas and/or vapor discharged. from the extraction connection in the vacuum housing (10). 11. De kap, het afzuigaansluitelement of de afzuigleiding volgens de voorgaande conclusie, waarbij de gas- of dampdetector (40) een hygrostaat is.The hood, the extraction connection element or the extraction line according to the preceding claim, wherein the gas or vapor detector (40) is a humidistat. 12. Een afzuigwerkwijze voor het plaatselijk afzuigen van een gas en/of damp uit een gas- en/of dampbron (S) in de keukenruimte (K), zoals een stoomoven, waarbij de werkwijze omvat - het verschaffen van een keukenluchtafzuigkap (1) voor luchtafzuiging van boven een kookvoorziening in de keukenruimte, waarbij de kap omvat: -- een onderdrukomhuilling (10), waarin, in gebruik, een onderdruk ten opzichte van de keukenruimte wordt gehandhaafd door fluidumverbinding met een uitlaatsysteem (15) dat lucht aanzuigt uit de onderdrukomhulling; en -- een afzuigoppervlaktegebied (20) waardoorheen in gebruik lucht uit de keukenruimte wordt afgezogen naar de onderdrukomhulling, in het bijzonder waarbij het afzuiggebied omvat of is ingericht voor het omvatten van een of meer filterelementen (21) voor het filteren van lucht afgezogen doorheen de filterelement(en) in het afzuigoppervlaktegebied; - het aanbrengen van een afzuigaansluitelement (30) in het afzuigoppervlakte- gebied (20), waarbij het afzuigaansluitelement (30) heeft een afzuigaansluiting (31) met de onderdrukomhulling (10); - het verschaffen van een kookapparaat (O) met een gas- en/of dampuitlaat (S) nabij de kap; - het verbinden van een eerste uiteinde (32.1) van een afzuigleiding (32) in fluidumverbinding met het afzuigaansluitelement (30); - het nabij de gas- en/of dampuitlaat (8) voorzien van een tweede uiteinde (32.2) van de afzuigleiding voor het plaatselijk afzuigen van gas en/of stoom uit de gas- en/of stoomuitlaat in de keukenruimte; - het bedrijven van de kap; en - het bedrijven van het kookapparaat met de gas- en/of dampuitlaat.12. An extraction method for locally extracting a gas and/or vapor from a gas and/or vapor source (S) in the kitchen space (K), such as a steam oven, wherein the method comprises - providing a kitchen air extractor hood (1) for air extraction from above a cooking facility in the kitchen space, wherein the hood comprises: -- a negative pressure enclosure (10), in which, in use, a negative pressure with respect to the kitchen space is maintained by fluid connection with an exhaust system (15) that sucks air from the negative pressure enclosure; and -- an extraction surface area (20) through which, in use, air is extracted from the kitchen space to the negative pressure enclosure, in particular wherein the extraction area comprises or is designed to comprise one or more filter elements (21) for filtering air extracted through the filter element(s) in the extraction surface area; - arranging an extraction connection element (30) in the extraction surface area (20), wherein the extraction connection element (30) has an extraction connection (31) with the negative pressure envelope (10); - providing a cooking appliance (O) with a gas and/or vapor outlet (S) near the hood; - connecting a first end (32.1) of an extraction line (32) in fluid communication with the extraction connection element (30); - providing a second end (32.2) of the extraction pipe near the gas and/or vapor outlet (8) for locally extracting gas and/or steam from the gas and/or steam outlet in the kitchen area; - operating the hood; and - operating the cooking appliance with the gas and/or vapor outlet. 13. De werkwijze volgens een van de voorgaande conclusies, waarbij het kookapparaat (O) met de gas- en/of dampuitlaat (8) onder de kap (1) wordt opgesteld.The method according to any of the preceding claims, wherein the cooking appliance (O) with the gas and/or vapor outlet (8) is arranged under the hood (1). 14. De werkwijze volgens een der voorgaande conclusies, waarbij het tweede uiteinde (32.2) van de afzuigleiding (32) wordt aangebracht over de gas- en/of dampuitlaat (S) van de kookinrichting (O).The method according to any one of the preceding claims, wherein the second end (32.2) of the extraction line (32) is placed over the gas and/or vapor outlet (S) of the cooking device (O).
NL2031430A 2022-03-29 2022-03-29 Kitchen Air Extraction Canopy and Extraction Element and Extraction Duct therefor NL2031430B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10041687B1 (en) * 2005-05-17 2018-08-07 Mary Ann Caneba Vent extender method having intake air option for conveying ventilation to close proximity of a fume and odor source
DE102019000693A1 (en) * 2019-01-31 2020-08-06 Leonhard Brader Intelligent extractor system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10041687B1 (en) * 2005-05-17 2018-08-07 Mary Ann Caneba Vent extender method having intake air option for conveying ventilation to close proximity of a fume and odor source
DE102019000693A1 (en) * 2019-01-31 2020-08-06 Leonhard Brader Intelligent extractor system

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