EP3529538B1 - Élément arqué pour système de ventilation - Google Patents

Élément arqué pour système de ventilation Download PDF

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Publication number
EP3529538B1
EP3529538B1 EP17791327.4A EP17791327A EP3529538B1 EP 3529538 B1 EP3529538 B1 EP 3529538B1 EP 17791327 A EP17791327 A EP 17791327A EP 3529538 B1 EP3529538 B1 EP 3529538B1
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EP
European Patent Office
Prior art keywords
arch element
section
arc element
arch
wall
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EP17791327.4A
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German (de)
English (en)
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EP3529538A1 (fr
Inventor
Siegfried Gößler
Anja Immerz
Wilhelm Bruckbauer
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve

Definitions

  • the invention relates to an arch element for an extractor system.
  • the invention also relates to a method for producing such an arch element.
  • the invention also relates to an assembly set comprising the arch element and a corresponding assembly device.
  • the invention relates to a ventilation system with a corresponding arch element.
  • the minimum radius of curvature of the flow cross section of the interior is in particular at least 1/5, in particular at least 1/3 of the smallest diameter of the flow cross section.
  • the flow cross section of the interior has a corresponding minimum radius of curvature in particular at any point.
  • the pressure resistance of the arch element and thus the pressure loss that is caused by it can be reduced.
  • the side walls of the flat channel can be formed by circular arc-like sections, in particular by semicircular arcs.
  • the minimum radius of curvature of the same is in particular at least as large as a tenth of the root of the flow cross section, in particular at least as large as a fifth of the root of the flow cross section, in particular at least as large as a third of the root of the flow cross section, in particular at least as large like half the root of the flow cross-section.
  • the radius of curvature is in particular at least 2.5 cm, in particular 3 cm, in particular 4 cm. This applies in particular to an arch element with an end flow cross section of 100 cm 2 , in particular at least 125 cm 2 , in particular at least 150 cm 2 , in particular at least 175 cm 2 , in particular at least 200 cm 2 .
  • the specified values of the radius of curvature relate in particular to an arch element with an end-side flow cross-section of at most 250 cm 2 .
  • the arch element has openings at both ends with the same amount of flow cross-section.
  • the arch element it is possible for the arch element to have a flow cross-section that is different in terms of amount at one end than at the other end.
  • the flow cross-sections can in particular differ from one another by more than 10%, in particular more than 20%. They usually differ from each other by a factor of 2 at most.
  • the arch element has an oval flow cross section.
  • it has an oval flow cross-section over its entire length.
  • the oval can in particular be formed essentially by two straight line sections and two semicircles.
  • the arch element can have an elliptical flow cross-section.
  • the bend element is a pipe bend or a channel bend.
  • the arch element is used in particular to change the direction of a pipe or duct system. This allows the medium to be conveyed to be deflected. The deflection can take place in the horizontal or vertical direction. In principle, it can also take place in any direction.
  • the two end openings of the arch element enclose an angle of at least 15 °, in particular at least 30 °, in particular at least 45 °, in particular at least 60 °, in particular 90 ° with one another.
  • the arch element is used in particular to deflect an air flow by the corresponding angle.
  • the outer wall of the arch element is formed in one piece.
  • An additional joint connection can hereby be avoided. This leads to a cost saving in the manufacture of the arch element. In addition, this makes production less error-prone. Finally, this facilitates the handling of the arch element during manufacture. It is not necessary to glue individual parts of the outer wall. In particular, no additional material is required to complete the outer wall.
  • the arch element can in particular be designed in one piece overall. It can in particular be made of plastic. It can preferably be produced by means of an injection molding process. This also facilitates production.
  • the arch element is made of a dimensionally stable material.
  • the arch element can be designed to be flexible, at least in some areas.
  • it can comprise a flexible central area. This makes it possible to close the angle which the two openings at the ends enclose with one another adjust.
  • the outer wall can comprise an area which is designed to be elastic.
  • all surfaces of the arch element that come into contact with the medium to be conveyed have a high surface quality.
  • Rz mean surface roughness
  • Rz ⁇ 5 ⁇ m in particular Rz ⁇ 3 ⁇ m.
  • Such a small surface roughness Rz can be achieved by the manufacturing process of the arch element and / or by a surface treatment, in particular a surface refinement thereof.
  • the arch element has at least one guide element which is arranged in the interior and is formed in one piece with the outer wall.
  • the entire arch element is preferably designed in one piece.
  • the arch element can in particular have two, three, four, five or more corresponding guide elements.
  • the flow resistance of the arch element can be reduced by appropriate guide elements.
  • a one-piece design of the arch element leads to the advantages already described above.
  • the at least one guide element is designed to be doubly curved. It has a curvature in particular in the flow direction, in particular corresponding to the curvature of the arch element. It also has a curvature in a plane of a flow cross section.
  • the guide element can in particular have a shape which can be described by a section from a torus surface. In particular, it has two constant radii of curvature.
  • the radius of curvature of the at least one guide element can vary in particular in the direction of flow and / or perpendicular to the direction of flow, that is to say not be constant.
  • the smaller of the radii of curvature of the at least one guide element can be at least as large as the minimum radius of curvature of the flow cross-section of the interior.
  • the radii of curvature of the guide elements are in particular less than 10 m, in particular less than 5 m, in particular less than 3 m, in particular less than 2 m, in particular less than 1 m.
  • the arch element has a flow cross section that varies in the flow direction.
  • the arch element can in particular have a flow cross section that varies in amount in the flow direction.
  • the arch element can have a flow cross-section that decreases in areas in the flow direction and then increases again.
  • the arch element can, in particular in the direction of flow, initially form a confuser and then a diffuser. It can also exclusively form a confuser or a diffuser.
  • one of the end openings of the arch element is circular.
  • the arch element forms a transition piece from an oval flow cross section to a circular flow cross section.
  • it can serve as a transition piece from a flat duct to a round duct.
  • the cross section of the circular opening can be just as large as the cross section of the oval opening of the arch element.
  • the cross section of the circular opening can also be smaller than the cross section of the oval opening. In particular, it can be at least 5%, in particular at least 10% smaller than the flow cross section of the oval opening. It is preferably at most 30% smaller, in particular at most 20% smaller than the cross section of the oval opening.
  • the cross section of the circular opening can also be larger, in particular by at least 5%, in particular by at least 10%, in particular by at most 20%, in particular by at most 30% larger than the cross section of the oval opening.
  • the outer wall can be formed by free-form surfaces.
  • the interior of the arch element is in particular free of undercuts.
  • the outer wall of the arch element can in particular be designed in two parts.
  • the two parts can be connected to one another via a tongue and groove connection. This leads to a particularly simple and reliable positioning of the two molded parts.
  • the two parts can in particular be held together by means of a snapper.
  • a bead for glue for gluing the two parts of the outer wall of the arch element is provided along the parting line. This facilitates a liquid-tight, in particular a gas-tight, connection between the two parts of the arch element.
  • the separate guide element can in particular be pushed loosely into the interior of the arch element.
  • it can be fixed in the area of the oval opening of the arch element and / or in the area of the circular opening of the arch element by means of guide and / or fixing means in the arch element.
  • Guide rails and / or locking elements can serve as guide and / or fixing means. It can also be inserted into the outer wall of the arch element in a form-fitting manner, at least in some areas.
  • the guide elements can be arranged in the interior of the arch element in such a way that they divide the flow cross-section into equal parts in terms of amount.
  • the guide elements can also be made for the guide elements to be arranged in such a way that the flow cross-section is divided into subregions of different sizes.
  • the partial area on the inside of the curve of the arch element can be smaller than that on the outside of the curve of the arch element.
  • the position and arrangement of the guide elements in the interior of the arch element can in particular be selected such that when the arch element flows with a predetermined air stream on the outlet side, a particularly uniform velocity profile of the air stream results.
  • a corresponding arrangement of the guide elements can be determined, in particular optimized, with the aid of a simulation method.
  • the arch element has a ratio of flow cross-section, in particular on the outlet side of the flow cross-section, to hydraulic diameter of at most 15 cm, in particular at most 12 cm, in particular at most 10 cm. Another object is to improve a method of manufacturing an arch element as described above.
  • This object is achieved by a method in which the outer wall of the arch element and the at least one guide element are produced in a single method step.
  • the arch element can in particular be produced by means of an injection molding process.
  • Another object is to provide a mounting device for the arch element.
  • the assembly device enables a particularly simple assembly of the arch element.
  • elongated holes are arranged in the base plate.
  • the elongated holes are aligned in particular at an angle, in particular perpendicular to one another.
  • the elongated holes can each be arranged on the inside and / or on the outside of the guide elements. It is particularly possible to arrange the elongated holes in pairs in the area of the guide elements, with one of the elongated holes inside and one of the Elongated holes is arranged outside one of the guide elements.
  • the elongated holes in the area of one guide element can be aligned perpendicular to those in the area of the other guide element.
  • the base plate can be made stiffened. In particular, it can be designed with a profile.
  • the guide elements can have a length of at least 10 cm, in particular at least 12 cm, in particular at least 15 cm, in particular at least 18 cm.
  • the length of the guide elements is in particular at most 35 cm, in particular at most 30 cm, in particular at most 25 cm.
  • the length of the guide elements specifies a maximum adjustment path for the arrangement of the arch element.
  • the guide elements can have separating joints for variable shortening. They can have locking means which can interact with matching locking means of the fixing element.
  • the guide elements can in particular be provided with a sawtooth structure on their surface.
  • the guide elements and the fixing element each have mutually matching locking means, by means of which they can be locked to one another.
  • the fixing element can in particular be arranged on the guide elements in a variably adjustable manner.
  • the fixing element can in particular be detachably connected to the guide elements.
  • the fixing element can in particular be designed as a bracket which can be pushed onto the guide elements and locked to them.
  • the inside of the bracket can be adapted to the shape of the outside wall of the arch element.
  • it can have clamping elements that match the structures of the outer wall of the arch element.
  • the arch element can thus by means of the fixing element on the base plate clamped, in particular fixed, in particular fixed between the two guide elements.
  • the arch element can be arranged in particular at a variable distance from the base plate between the guide elements.
  • the arch element has structures on its outside, for example in the form of a sleeve, which, when the arch element is arranged in the assembly device, rest positively on areas of the guide elements and / or the fixing element provided for this purpose. This ensures a secure arrangement of the arch element in the assembly device.
  • the assembly set comprises one or more sealing elements, by means of which a tight, in particular a liquid-tight, preferably a gas-tight connection between a flat or round channel element and the arch element can be established.
  • Such a sealing element significantly simplifies the assembly of the arch element, in particular the connection of the same to an adjacent duct or pipe element.
  • Another object is to improve a ventilation system, in particular an extractor system for a kitchen stove.
  • the ventilation system is in particular an extractor system with a device for extracting cooking vapors from a hob level.
  • the device for extracting cooking vapors is connected in particular via a ventilation duct with an arch element according to the previous description with an air outlet opening.
  • the advantages result from those of the arch element.
  • the reduced flow resistance of the arch element leads to more efficient extraction of cooking vapors with a given extraction device.
  • the extractor system 1 generally forms a ventilation system. It comprises a fan 2 for generating an air flow.
  • the fan 2 is connected to an outlet unit 4, in particular to an air outlet opening, via a ventilation duct 3.
  • a wall box or a circulating air unit can in particular serve as the outlet unit 4.
  • the extractor system 1 also includes an extractor device 5.
  • the extractor device 5 can in particular be a so-called downdraft system, that is to say an extractor that draws off steam downwards from a hob level 6. In particular, it can be a cooktop extractor system.
  • the fume extractor device 5 comprises a vapor inlet device 7.
  • the vapor inlet device 7 can be arranged adjacent to a hob 8. It is arranged in particular between two hobs 8. It can also be integrated into a hob system 9 with at least one, in particular several, hob 8.
  • the hobs 8 and the vapor inlet device 7 can in particular be combined to form an assembly unit. This simplifies the installation of the hob system 9, among other things.
  • the extractor device 5 is fluidically connected to the fan 2 via a connecting duct 10.
  • the connecting channel 10 can comprise one or more tubes, channels or hoses. It can in particular comprise an arch element 11, which is described in more detail below.
  • the connecting channel 10 is arranged in particular on the back of a base cabinet element 12 with drawers 13 or compartments.
  • the fan 2 is arranged in particular in the base area 14 of the base cabinet elements 12.
  • An arch element 11 can also be provided in the ventilation duct 3, which fluidically connects the fan 2 to the outlet unit 4.
  • the representation and description of the ventilation system in the form of the extractor system 1 is to be understood purely as an example.
  • Alternative designs of the same, in particular alternative guides for the connecting duct 10 and / or the ventilation duct 3, are not only possible but to be expected.
  • the routing of the connecting duct 10 and / or the ventilation duct 3 in particular can be adapted very flexibly to the structural conditions.
  • the arch element 11 has an outer wall 16.
  • the outer wall 16 delimits an interior 17 of the arch element 11.
  • the outer wall 16 is formed in one piece. It is made of plastic, in particular a dimensionally stable plastic. In particular, it is made of a heat-resistant and fire-resistant material. In particular, it is heat-resistant at least up to a temperature of 60 ° C., in particular at least up to a temperature of 90 ° C., in particular at least up to a temperature of 120 ° C.
  • the outer wall 16 is in particular made of a normally flammable or hardly inflammable material (building material class DIN 4102-1 B2 or B1).
  • the arch element 11 has an opening 18, 19 at each end.
  • the openings 18, 19 are each surrounded by a border, in particular in the form of a sleeve 20, 21.
  • a contact surface 29 is arranged in each case on the outside of the arch element 11 in the area of the sleeves 20, 21.
  • the contact surface 29 has a straight outer edge 30.
  • the contact surfaces 29 facilitate an arrangement of the arch element 11 in which the straight sections 24, 25 of the inlet are aligned parallel to the vertical direction.
  • the first opening 18 is oriented perpendicular to a first direction 22.
  • the second opening 19 is oriented perpendicular to a second direction 23.
  • the directions 22, 23 form an angle of 90 ° with one another. In general, the directions 22, 23 enclose an angle of at least 15 °, in particular at least 30 °, in particular at least 45 °, in particular at least 60 °, with one another.
  • the first opening 18 is oval. It has a cross section which is delimited by two straight sections 24, 25 and two semicircular sections 26, 27.
  • the first opening 18 has an elliptical cross section.
  • the first opening 18 has a largest diameter d max and a smallest diameter d min .
  • the ratio d max : d min is at least 1.5: 1, in particular at least 2: 1, in particular at least 2.5: 1.
  • the arch element 11 is therefore also referred to as a flat channel arch.
  • the first opening 18 is also referred to below as the inlet. Accordingly, the second opening 19 is also referred to below as an outlet. This is not to be understood as restrictive.
  • the second opening 19 can in particular also serve as an inlet and the first opening 18 can also serve as an outlet.
  • the first opening 18 has a flow cross section in the range from 175 cm 2 to 200 cm 2 .
  • the flow cross section of the inlet of the arch element 11 is at least 100 cm 2 , in particular at least 125 cm 2 , in particular at least 150 cm 2 . It is in particular at most 500 cm 2 , in particular at most 300 cm 2 .
  • the same information also applies to the outlet of the arch element 11.
  • the inlet and outlet can in particular be designed identically. In particular, they can have the same flow cross section at least in terms of amount, in particular also with regard to their shape the same flow cross section. It is also possible to design the arch element 11 with an inlet and an outlet which have a different flow cross-section. Such an alternative is described in more detail below.
  • the flow cross-section of the interior 17, in particular in the area of the openings 18, 19, in particular at any point, has a minimum radius of curvature r min , which is at least as large as a tenth, in particular at least as large as a fifth, in particular at least so as large as a quarter, in particular at least as large as a third, of the smallest diameter d min of this flow cross-section, r min d min / 10, in particular r min dmin / 5, in particular r min dmin / 4, in particular r min dmin / 3.
  • the minimum radius of curvature r min of the flow cross section of the interior 17 in the area of the openings 18, 19, in particular at any point on the arch element 11, is at least 2 cm, in particular at least 3 cm, in particular at least 4 cm.
  • Three guide elements 28 1 , 28 2 , 28 3 are arranged in the interior 17 of the arch element 11. The guide elements 28 1 , 28 2 , 28 3 subdivide the interior space 17 into four separate flow channels.
  • At least one guide element 28 is arranged in the interior 17 of the arch element 11.
  • the number of guide elements 28i is preferably two, three or more.
  • the guide elements 28i are formed in one piece with the outer wall 16.
  • the entire arch element 11 is in particular formed in one piece.
  • the guide elements 28i can also be formed separately from the outer wall 16 and arranged in the interior 17 of the arch element 11. In particular, they are fixed in a stationary manner relative to the outer wall 16.
  • the guide elements 28i are designed to be doubly curved. In particular, they have a first direction of curvature corresponding to the curvature of the arch element 11. They also have a curvature in the plane of the flow cross section A.
  • the guide elements 28i can in particular each have a shape which corresponds to a section from the surface of a torus.
  • the guide elements 28i have an increasing radius of curvature with increasing distance from the inside of the curve of the arch element 11.
  • this shape can also be modified in such a way that the guide elements 28i have a changing radius of curvature, as seen in the direction of flow.
  • the flow properties in the arch element 11 can be further improved, in particular optimized.
  • other flow profiles can also be specified.
  • the guide elements 28i can also have a radius of curvature that changes over the corresponding extent of the guide element 28i in relation to a flow cross-sectional plane.
  • the guide elements 28i each have a curvature pointing outward from the center of curvature M of the arch element 11. In particular, they have a convex, in particular double convex, curvature as seen from the center of curvature M.
  • the guide elements 28i have a concave curvature in a vertical plane running in the radial direction, in particular in the area of the first opening 18 and / or the second opening 19. They can also be S-shaped, that is to say convex-concave.
  • the guide elements 28i can be designed to correspond to one another with regard to their curvature properties. They can also be designed differently. In particular, it is possible for one of the guide elements 28i to be convexly curved and another to be concavely curved. This can be particularly advantageous if different flow channels are to serve different purposes.
  • the guide elements 28 i can be arranged in particular in the interior 17 of the arch element 11 in such a way that the flow channels defined by the guide elements 28 i each have the same flow cross section A in terms of amount.
  • the guide elements 28i are arranged in particular in such a way that the individual flow channels each have an essentially identical hydraulic diameter.
  • the arch element 11 has a flow cross section A that varies in the direction of flow. It has been shown that this can also further reduce a pressure loss when flowing through the arch element 11.
  • the outer wall 16 of the arch element 11 and the guide elements 28i are produced in a single common process step.
  • the arch element 11 can in particular be produced by means of an injection molding process. This enables a particularly simple, reliable production of the arch element 11.
  • the assembly device 15 for assembling the arch element 11 is described in more detail below.
  • the assembly device 15 forms, together with the arch element 11 or 11a, an assembly set 40.
  • the assembly device 15 comprises a base plate 31.
  • Two rod-like guide elements 32 are arranged on the base plate 31.
  • the guide elements 32 are also referred to as guide rods.
  • the base plate 31 with the guide elements 32 arranged thereon is also referred to as a suspension 39.
  • Latching means in the form of a toothing 33 are formed on the guide rods.
  • the locking means on the guide rods interact with matching locking means of a fixing element in the form of a fixing bracket 34.
  • the latching means of the fixing bracket 34 are designed as leaf spring elements 35. They are integrated into a guide structure 36 for guiding the fixing element on the guide elements 32.
  • the guide structure 36 is essentially formed by two flat elements protruding outwardly at right angles from the fixing bracket 34.
  • the guide structure 36 is designed as a guide channel.
  • the guide channel has in particular an inner, free cross section which is adapted to the outer cross section of the guide rod.
  • a clamping projection 37 is provided on both sides of the inside of the fixing element.
  • the clamping projection 37 serves to clamp the sleeves 20, 21 and thus to fix the arch element 11 between the two guide elements 32.
  • the contact surfaces 29 can be provided with groove-like Recesses of the guide elements 32 interact. They can also rest on one side of the guide elements 32. With the aid of the contact surfaces 29, which interact with the guide elements 32, it is particularly possible to secure the arch element 11 against displacement along the first direction 22 on the assembly device 15.
  • the fixing bracket 34 is adjustable on the guide elements 32. As a result, in particular the distance between the fixing bracket 34 and the base plate 31 can be adjusted.
  • the guide elements 32 can be cut to length. In particular, it is possible to separate the part that is not required starting from the free end of the guide elements 32.
  • the fixing bracket 34 can in particular be pushed onto the guide elements 32. It is secured against displacement in the direction of the guide elements 32 away from the base plate 31 by the leaf spring elements 35, which interact with the toothing 33 on the guide elements 32.
  • the arch element 11 can be fixed relative to the assembly device 15 and thus relative to a building or furniture structure on which the assembly device 15 is attached.
  • the fixing bracket 34 With the help of the fixing bracket 34, on the one hand, a reliable fixation of the arch element 11 in the assembly device 15 is possible; on the other hand, the fixing bracket 34 also enables it to be removed from the guide elements 32 and thus the arch element 11 to be removed from the assembly device 15 .
  • the mounting device 15 can be flexibly fastened horizontally, in particular on a floor or on a ceiling, or vertically, in particular on a wall.
  • elongated holes 38 are provided in the base plate 31.
  • two elongated holes 38 are arranged in the area of one of the guide elements 32.
  • the two elongated holes 38 are in particular arranged on the opposite side of one of the guide elements 32.
  • the elongated holes 38 in the area of the one guide element 32 are aligned in particular parallel to the longitudinal direction of the base plate 31.
  • the other two elongated holes 38 are preferably arranged perpendicular to the longitudinal direction of the base plate 31. This enables a particularly simple, precise fastening of the base plate 31 to a substrate.
  • the base plate 31 is designed to be profiled.
  • the base plate 31 can be provided with separating joints 41.
  • the separation joints 41 are in particular arranged on the outside of the guide elements 32. They allow the base plate 31 to be shortened in a simple manner. In particular, this enables the assembly device 15 to be installed directly adjacent to a side wall.
  • the guide elements 32 can have a distance of less than 1 cm, in particular less than 0.5 cm, to a side wall.
  • the fixing bracket 34 When the fixing bracket 34 is arranged on the guide elements 32, a receiving area that is completely closed on the periphery is formed for receiving the arch element 11.
  • the receiving area is formed on the one hand by the fixing bracket 34, on the other hand by the base plate 31 and optionally by a section of the guide elements 32 adjoining the base plate 31.
  • the distance between the guide elements 32 is adapted to the dimensions of the arch element 11, in particular to the largest diameter of the inlet of the arch element 11. This is understood to mean that the distance between the two guide elements 32 on the base plate 31 exactly corresponds to the largest outer diameter of the arch element 11 in the area of the inlet and / or the outlet, in particular in the area directly adjacent to the sleeves 20, 21.
  • the arch element 11a forms a transition piece from a flat channel to a round channel. Like in the Fig. 7 is shown by way of example, the second opening 19 of the arch element 11a is circular. With regard to the first opening 18, reference is made to the description of the arch element 11.
  • the arch element 11a can also have an outer wall 16 that is embodied in one piece.
  • the outer wall 16 of the arch element 11a can also be designed in two parts. It can in particular be formed from two parts 42, 43 which are each formed by a free-form surface.
  • the two parts 42, 43 of the outer wall 16 of the arch element 11a are in particular free from undercuts.
  • the two parts 42, 43 of the outer wall 16 of the arch element 11a can be connected to one another via a tongue and groove connection, for example. This enables a particularly simple and reliable positioning of the two molded parts of the arch element 11a with respect to one another.
  • the two parts 42, 43 of the outer wall 16 of the arch element 11a can be fixed to one another by means of clamps 44. They can also be glued together. For this purpose and for sealing the connection between the two parts 42, 43, a bead can be provided in the area of the connection line.
  • the inner part 43 of the arch is connected to the sleeve 21, which is preferably formed in one piece, in particular formed in one piece with it.
  • a single guide element 28 is provided in the case of the arch element 11a shown in the alternatives shown.
  • a different number of guide elements 28i is also possible in the case of the arch element 11a.
  • the guide element 28 is in particular designed to be curved in a single manner. In particular, it has an essentially straight course parallel to the axis of curvature.
  • the guide element 28 can be advantageous to design the guide element 28 separately from the outer wall 16 of the arch element 11a.
  • the guide element 28 can then be introduced into the interior 17 of the arch element 11a and fixed there.
  • fixing webs 45 are arranged in pairs on the inside of the outer wall 16 of the arch element 11a.
  • a receiving groove 46 for receiving the guide element 28 is formed between the two fixing webs 45 of a pair.
  • the guide element 28 can in particular be glued in the receiving groove 46.
  • a locking of the guide element 28 with matching locking means, in particular in the area of the sleeve 21, is also possible.
  • the guide element 28 is preferably integrated positively into the outer wall 16 of the arch element 11a (see FIG Figure 9 ).
  • it has in each case a side section 47 which continues the inner contour of the outer wall 16 in an essentially smooth manner, in particular without edges.
  • the end of the side section can have a groove 48 for receiving the first part 42 of the outer wall 16.
  • the second part 43 of the outer wall 16 is multi-stepped in this area, in particular designed with double steps.
  • the guide element 28 is thus fixed between an end edge 49 of the first part 42 and a step 50 in the second part 43. It can also be fixed in the second part 43 by a second step 51.
  • the end edge 49 of the first part 42 engages, in particular, in the groove 48 in the side section 47 of the guide element 28.
  • connection of the arch element 11 according to the preceding description with a connection piece, in particular in the form of a flat channel element 56, is described.
  • the flat channel element 56 can also be connected to the arch element 11a.
  • the flat channel element 56 is pushed into the sleeve 21 at the end of the arch element 11. It overlaps with the sleeve 21 in the flow direction essentially over the entire length of the sleeve 21.
  • the inside of the flat channel element 56 forms an essentially smooth, in particular edge-free continuation of the inside of the arch element 11.
  • Sealing element 57 shown as an example is arranged.
  • the sealing element 57 is pulled onto the flat channel element 56. It is pushed together with the flat channel element 56 into the arch element 11, in particular its sleeve 21. It leads to a tight, in particular liquid-tight, preferably gas-tight connection between the flat channel element 56 and the arch element 11.
  • the sealing element 57 is made of a flexible material.
  • the sealing element 57 is preferably made of an elastic material. It can in particular be made of rubber. It completely surrounds a free end of the flat channel element 56 on the circumferential side. It has a slightly inwardly projecting edge 58 on one side. When the sealing element 57 is pulled onto the flat channel element 56, the edge 58 rests against a free edge of the flat channel element 56 at the end.
  • the edge 58 comes to lie between the free edge of the flat channel element 56 and a contact shoulder 59 formed by the sleeve 21.
  • the sealing element 57 has three circumferential sealing lips 60. In particular, it has at least one sealing lip 60. It can also have two or more than three sealing lips 60.
  • the sealing lips 60 can have different heights. They lead to a tight, in particular a liquid-tight, preferably a gas-tight connection between the flat channel element 56 and the sealing element 57, and thus between the channel or pipe element and the arch element 11.
  • the sealing element 57 can form a component of the arch element 11 or 11a or a component of the flat or round channel element. In particular, it can form a component of the assembly set 40 as a separate element.
  • the sealing element 57 can lead, in particular in the ventilation system 1, to a tight connection of a flat or round duct element with the arch element 11.
  • the radius of curvature of the guide elements 28i in a flow cross-sectional plane is in particular in the range from 50 mm to 500 mm.
  • the guide elements 32 have a length in the range from 5 cm to 20 cm.
  • the toothing 33 can provide an adjustment path in the range from 5 cm to 20 cm.
  • the base plate 31 in particular has a structural height in the range from 5 mm to 15 mm, in particular in the range from 8 mm to 12 mm. It thus simultaneously serves as a spacer between the arch element 11 and a building or furniture structure on which the arch element 11 is arranged.
  • the assembly device 15 considerably simplifies the assembly of the arch element 11 and thus of the entire ventilation duct 3 and / or connecting duct 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Duct Arrangements (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (14)

  1. Élément d'arc (11) pour un système de hotte de cuisine avec
    1.1. une paroi extérieure (16) confinant un espace intérieur (17) de l'élément d'arc (11),
    1.2. une première ouverture (18) perpendiculaire à une première direction (22),
    1.3. une deuxième ouverture (19) perpendiculaire à une deuxième direction (23), et
    1.4. au moins un élément de guidage (28) disposé à l'intérieur (17),
    1.5. selon lequel une des ouvertures (18, 19) est conçu ovale avec un rapport du plus grand diamètre (dmax) au plus petit diamètre (dmin) d'au moins 1,5 : 1 et
    1.6. selon lequel une section d'écoulement (A) de l'intérieur (17) a un rayon de courbure minimal (rmin) qui est au moins aussi grand qu'un dixième du plus petit diamètre (dmin) de cette section d'écoulement (A), rmin ≥ dmin/ 10,
    caractérisé en ce que
    1.7. l'au moins un élément de guidage (28) est conçu avec une double courbe,
    selon lequel l'au moins un élément de guidage (28) comprend une courbure dans une direction d'écoulement et une courbure dans un plan de la section d'écoulement (A)
  2. Élément d'arc (11) selon la revendication 1, caractérisé en ce que l'au moins un élément de guidage (28) est formé monobloc avec la paroi extérieure (16).
  3. Élément d'arc (11) selon la revendication 1, caractérisé en ce que l'au moins un élément de guidage (28) est formé séparément de la paroi extérieure (16) et est inséré au moins par zones de façon craboté dans la paroi extérieure (16) de l'élément d'arc (11).
  4. Élément d'arc (11) selon l'une des revendications précédentes, caractérisé en ce que toutes les surfaces de l'élément d'arc (11) entrant en contact avec le milieu à transporter comprenant une profondeur moyenne de rugosité (Rz) inférieure à 5 µm.
  5. Élément d'arc (11) selon l'une des revendications précédentes, caractérisé en ce que la paroi extérieure (16) comprend une zone élastique.
  6. Élément d'arc (11) selon l'une des revendications précédentes, caractérisé par une section d'écoulement (A) variant dans le sens de l'écoulement.
  7. Élément d'arc (11) selon l'une des revendications précédentes, caractérisé en ce que l'une des ouvertures (18, 19) est formée circulaire.
  8. Élément d'arc (11) selon l'une des revendications précédentes, caractérisé en ce qu'il a un rapport entre la section d'écoulement (A) et le diamètre hydraulique d'au plus de 15 cm.
  9. Procédé de fabrication d'un élément d'arc (11) selon l'une des revendications 1 à 8, caractérisé en ce que la paroi extérieure (16) de l'élément d'arc (11) et l'au moins un élément de guidage (28) sont fabriqués en une seule étape du procédé.
  10. Ensemble de montage (40) comprenant
    10.1. un élément d'arc (11) selon l'une des revendications 1 à 8, et
    10.2. un dispositif de montage (15) pour l'élément darc (11) avec
    10.2.1. une plaque de base (31),
    10.2.2. au moins deux éléments de guidage (32) disposés sur la plaque de base (31), et
    10.2.3. au moins un élément de fixation (34) pour fixer l'élément d'arc (11) par rapport à la plaque de base (31),
    10.3 selon lequel l'élément de fixation (34) peut être relier par adhérence ou par forme à au moins deux des éléments de guidage (32).
  11. Ensemble de montage (40) selon la revendication 10, caractérisé en ce que les éléments de guidage (32) et l'élément de fixation (34) chacun présentent des moyens d'encliquetage permettant de les verrouiller ensemble.
  12. Ensemble de montage (40) selon la revendication 10 ou 11, caractérisé en ce que les éléments de guidage (32) présentent des joints de séparation (41) pour un raccourcissement variable.
  13. Ensemble de montage (40) selon l'une des revendications 10 à 12, caractérisé en ce que l'élément d'arc (11) présente des structures sur sa face extérieure qui, lorsque la disposition de l'élément d'arc (11) dans le dispositif de montage (15), sont adjacentes par forme aux zones prévues des éléments de guidage (32) et/ou de l'élément de fixation (34) à cet effet.
  14. Système de ventilation (1) avec
    14.1. un ventilateur (2) pour générer un flux d'air,
    14.2. selon lequel le ventilateur (2) est relié par un conduit de ventilation (3) à au moins un élément d'arc (11) selon l'une des revendications 1 à 8 avec une ouverture de sortie d'air.
EP17791327.4A 2016-10-19 2017-10-19 Élément arqué pour système de ventilation Active EP3529538B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016220527.7A DE102016220527A1 (de) 2016-10-19 2016-10-19 Bogenelement für ein Lüftungssystem
PCT/EP2017/076727 WO2018073350A1 (fr) 2016-10-19 2017-10-19 Élément arqué pour système de ventilation

Publications (2)

Publication Number Publication Date
EP3529538A1 EP3529538A1 (fr) 2019-08-28
EP3529538B1 true EP3529538B1 (fr) 2020-12-02

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US (1) US20190316805A1 (fr)
EP (1) EP3529538B1 (fr)
CN (1) CN109937333A (fr)
DE (1) DE102016220527A1 (fr)
WO (1) WO2018073350A1 (fr)

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DE102018206642A1 (de) * 2018-04-27 2019-10-31 Wilhelm Bruckbauer Luftleitsystem
DE102020202599A1 (de) 2020-02-28 2021-09-02 Wilhelm Bruckbauer Kanaleinheit zum Leiten von Kochdünsten
DE102021113244A1 (de) * 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Downdraft-Element und Anordnung
DE102021113246A1 (de) * 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Rohrverbinder und Anordnung eines Rohrverbinders mit mindestens zwei Rohren
DE102021113249B4 (de) 2021-05-21 2023-04-27 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube
DE102021113247A1 (de) * 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Luftkanal und Anordnung für eine Dunstabzugshaube

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Also Published As

Publication number Publication date
CN109937333A (zh) 2019-06-25
WO2018073350A1 (fr) 2018-04-26
EP3529538A1 (fr) 2019-08-28
DE102016220527A1 (de) 2018-04-19
US20190316805A1 (en) 2019-10-17

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