WO2020128123A1 - Double-inlet air extractor - Google Patents

Double-inlet air extractor Download PDF

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Publication number
WO2020128123A1
WO2020128123A1 PCT/ES2019/070793 ES2019070793W WO2020128123A1 WO 2020128123 A1 WO2020128123 A1 WO 2020128123A1 ES 2019070793 W ES2019070793 W ES 2019070793W WO 2020128123 A1 WO2020128123 A1 WO 2020128123A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
opening
main body
central
air
Prior art date
Application number
PCT/ES2019/070793
Other languages
Spanish (es)
French (fr)
Inventor
Albert Bach-Esteve Burch
Original Assignee
Soler & Palau Research, S.L.
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 Soler & Palau Research, S.L. filed Critical Soler & Palau Research, S.L.
Priority to EP19899590.4A priority Critical patent/EP3901467A4/en
Priority to UAA202104241A priority patent/UA127463C2/en
Priority to AU2019410914A priority patent/AU2019410914A1/en
Publication of WO2020128123A1 publication Critical patent/WO2020128123A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/424—Double entry casings
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/524—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps shiftable members for obturating part of the flow path
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • 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
    • F24F7/10—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 with air supply, or exhaust, through perforated wall, floor or ceiling

Definitions

  • the present invention refers to an air extractor designed with a double air intake to achieve efficient and comfortable ventilation conditions in bathrooms, kitchens and similar rooms in residential or commercial premises.
  • the air extractors comprise a main body in which a propeller-motor assembly is arranged for absorption of the air to be extracted and a cover that is arranged on the upper end of the main body, closing it at said end. See for example document EP1816728B1, or document EP2012412B1.
  • the main body of the air extractor has at its upper end an opening for air intake, the propeller of the propeller-motor assembly being arranged approximately in said opening of the main body, and the main body having a lower end for connection with the air duct. air evacuation.
  • the cover that closes the upper end of the main body has a central opening provided with a grid, said central opening of the cover being aligned with the opening of the main body where the propeller is arranged, such that air is sucked in by the propeller from the central opening of the lid towards the opening of the main body to lead it towards the evacuation duct.
  • the extractor During use of the extractor, it is common for dust, and other types of dirt dispersed in the air, to tend to stick to the grille, and since the grille is exposed to view, it results in an inadequate aesthetic appearance of the extractor.
  • the extractors are generally located in elevated positions in the enclosures, such as on the ceiling, or in a upper part of a wall, so that access to them for cleaning is especially difficult, which causes them not to be cleaned as often as necessary to improve their appearance. This problem is aggravated given the dirty conditions of the rooms in which the extractor is arranged, so the grill tends to get dirty after a short time of use.
  • air extractors that have a blind cover without a central opening, and without a grid, so that dust does not accumulate in a visible area of the extractor, thus improving its aesthetic appearance.
  • This type of air extractors have the same configuration as the previously described grille extractors, except that the cover does not have the central opening with the grille, and that the cover is arranged on the main body but spaced a certain distance from the main body. In this way, the air is sucked in laterally through the established gap between the cover and the main body, to direct it towards the opening of the main body where the propeller is arranged, which in turn directs the air towards the evacuation duct.
  • this type of exhaust fan has less efficient ventilation conditions than the exhaust fans that take air in through the grille of the central opening of the lid.
  • an air extractor with a double air intake is proposed, which allows efficient ventilation conditions to be achieved for the rooms to be ventilated, in addition to presenting an improved aesthetic appearance since dirt does not accumulate in a visible area. of the extractor.
  • the double air inlet extractor proposed by the invention comprises:
  • a main body having an upper end with an opening for aspiration of air, a cover arranged on the upper end of the main body, and • a propeller-motor assembly housed in the main body, the propeller of the propeller-motor assembly being arranged in the opening for the aspiration of air from the main body.
  • the cover is spaced a first distance from the opening at the upper end of the main body, such that between the cover and the opening at the upper end of the main body there is defined a side air intake for air conduction from the side entrance to the opening at the upper end of the main body.
  • the lid has a central opening that is partially covered by a central shutter, the central shutter being separated a second distance from the central opening of the lid, such that between the central shutter and the central opening of the lid is defined a front air intake for air conduction from the front inlet to the main body opening.
  • the extractor allows to establish a double air intake, the lateral entrance defined between the cover and the main body, and the front entrance defined between the cover and the central shutter, which improve the ventilation conditions of the extractor of air.
  • the arrangement of the air intake side inlet with respect to the main body opening causes the air flow to have to make a turn to go towards the opening, which can generate shocks and turbulences that affect the extraction performance
  • the front air intake intake helps direct that air flow that enters through the side inlet facilitating rotation, so that such shocks and turbulence are reduced.
  • the central shutter is arranged partially covering the central opening of the cover through which the extractor sucks the air frontally, so that the aesthetic appearance of the extractor is improved as there are no visible parts of it in which dirt accumulates, since they are hidden by the central shutter.
  • the air extractor object of the invention results from some very advantageous characteristics for the function for which it is intended, acquiring its own life and preferential character compared to other conventional air extractors that are used for that function.
  • FIG. 1 shows a perspective view of an embodiment of the air extractor according to the invention.
  • Figure 2 shows a side view of the air extractor of figure 1.
  • Figure 3 shows a cross-sectional view of the extractor according to the section lll-lll indicated in figure 2.
  • Figure 4 shows a top view of the air extractor of figure 1.
  • Figure 5 shows another cross-sectional view of the extractor according to the V-V section indicated in Figure 4.
  • Figure 6 shows a sectional perspective view of the upper end of the main body, the cover and the central shutter.
  • Figure 7 shows a perspective view of the cover seen from its underside.
  • Figure 8A shows a schematic view of an extractor according to the state of the prior art with a front air intake.
  • Figure 8B shows a schematic view of an extractor according to the state of the prior art with a side air intake (S).
  • Figure 8C is a schematic view of an extractor according to the invention with a lateral air intake and a front air intake.
  • Figure 1 shows an embodiment of the exhaust fan for ventilation of bathrooms, kitchens, or similar rooms in residential or commercial premises.
  • the air extractor comprises a main body (10), a cover (20) that is arranged on the main body (10) and a propeller-motor assembly (30) that is housed inside the main body (10).
  • the main body (10) has an upper end (1 1) in which there is an opening (12) through which the propeller-motor assembly (30) sucks air, and a lower end (13), opposite the upper end (1 1), for the connection of the main body (10) with an air evacuation duct (not shown).
  • the propeller of the propeller-motor assembly (30) is arranged in the opening (12) of the upper end (1 1) of the main body (10) to cause the aspiration of air through the opening (12).
  • the opening (12) of the upper end (11) of the main body (10) has a grid (14) to protect against possible contact of a user with the propeller-motor assembly (30) in case of removing the cover (20) with the extractor running.
  • the extractor operating electronics are housed.
  • the lid (20) has a central opening (21), the central opening (21) of the lid (20) being partially covered by a central shutter (40).
  • the cover (20) is separated a first distance (D) from the opening (12) of the upper end (1 1) of the main body (10), so that a lateral air intake entrance is defined ( S), while on the other hand, the central shutter (40) is separated a second distance (d) from the central opening (21) of the cover (20), so that a front air intake entrance is defined ( F).
  • the propeller of the propeller-motor assembly (30) located in the opening (12) of the main body (10) sucks the air to conduct it from the lateral air intake intake (S) towards the opening ( 12) of the main body (10), and on the other hand, the propeller also sucks air to guide it from the front air intake (F) to the front opening (21) of the cover (20), and from there towards the opening (12) of the main body (10), finally evacuating all the air sucked through the air evacuation duct that connects to the lower end (13) of the main body (10).
  • the opening (12) of the main body (10) and the central opening (21) of the cover (20) are aligned, the central shutter (40) being arranged aligned with both openings (12,21) of the main body (10) and the cover (20). In this way, the central shutter (40) is arranged preventing the front view of the grid (14) that covers the opening (12) of the main body, where dirt can accumulate.
  • the imaginary axis passing through the center of the opening (12) of the main body (10) and the imaginary axis passing through the center of the central opening (21) of the cover (20) are coaxial, the axis being imaginary that passes through the center of the central shutter (40) also aligned with the axes of both openings (12,21) of the main body (10) and of the cover (20).
  • the central plug (40) has an external dimension that is equal to, or less than, the internal dimension of the central opening (21) of the cover (20). That is, the vertical projection of the central shutter (40) is equal to or less than the vertical projection of the central opening (21). This allows the flow entering through the front air intake (F) to follow a direction as rectilinear as possible makes the opening (12) of the main body (10), as can be seen in the sectional view of figure 5.
  • the extractor additionally comprises connecting means (15, 16,22,23) to establish a removable connection between the cover (20) and the upper end (11) of the main body (10). In this way, the cover (20) can be removed from the main body (10) to facilitate cleaning tasks when necessary.
  • one (16,23) of the connecting means (15, 16,22,23) has a different shape from the other connecting means (15,22) to establish an unequivocal mounting of the cover (20) on the main body (10).
  • the different connecting means (16,23) are additionally used to house an indicator light of an operating state of the extractor.
  • the central shutter (40) is attached to the cover (20) through supports (24).
  • the supports (24) have a laminar configuration with a thinner section that is arranged facing the front air intake (F). In this way, the supports (24) offer a minimum resistance to the passage of air, thus reducing possible noise that can be generated.
  • the supports (24) are arranged in diametrically opposite and equidistant positions, each of the supports (24) being arranged in the center of one of the sides of the cover (20).
  • the lid (20) and the central plug (40) are made in a single piece that is preferably obtained by means of an injection molding of plastic material.
  • the cover (20) has a bulged area (25) on the periphery of the central opening (21) that allows directing the air flow that enters through the front air intake (F).
  • the shape and arrangement of the supports (24) are specially designed to optimize injection molding and allow a good flow of the plastic material during molding.
  • the air extraction conditions are improved for preferred dimensions of the first and second distances (D, d) that allow double air entry.
  • the first distance (D) of separation between the cover (20) and the opening (12) of the upper end (11) of the main body (10) is preferably comprised between 10 mm and 20 mm
  • the second distance (d ) of separation between the central shutter (40) and the central opening (21) of the cover (20) is preferably comprised between 5 mm and 10 mm.
  • the preferred dimensions of the first and second distances (D, d) indicated above are dimensions measured vertically from one of the sides of the central plug (40) and the cover (20) respectively.
  • the gap between the lid (20) and the opening (12), and the gap between the center shutter (40) and the center opening (21), may be a gap in the vertical direction, as shown in example of embodiment of the figures, or it can be a separation in the horizontal direction, or a separation in an oblique direction, without altering the concept of the invention of generating the double air inlet with the central shutter (40) preventing that there are visible parts of the extractor where dirt accumulates.
  • the cover (20) has a concave shape such that the first distance (D) in which the cover (20) is separated from the opening (12) of the main body (10) is variable along the cover (20), the first distance (D) presenting a central zone with a maximum separation (Dmax) between the cover (20) and the opening (12) of the main body (10) and some extreme zones with a minimum separation (Dmin) between the cover (20) and the opening (12) of the main body (10).
  • Dmax maximum separation
  • Dmin minimum separation
  • the central shutter (40) also has a concave shape, so that the second distance (d) in which the central shutter (40) is separated from the central opening (21) of the cover (20) is also variable along the central shutter (40).
  • the second distance (d) also has a central zone with a maximum separation between the central shutter (40) and the central opening (21) of the cover (20) and extreme zones with a minimum separation between the central shutter ( 40) and the central opening (21) of the cover (20).
  • the main body (10) has a preferably cylindrical configuration, while the upper end (1 1) of the main body (10), the cover (20) and its central opening (21), as well as the central shutter (40), have a preferably square configuration.
  • the square configuration is not limiting, the central shutter (40) and / or the cover (20) being able to present other types of shapes without altering the concept of the invention, such as, for example, another polygonal shape of minus three sides, or a circular shape.
  • the upper end (11) of the main body (10), the cover (20), its central opening (21), and the central shutter (40) respectively have four sides, the sides being of each of said parts (1 1, 20,21, 40) of the extractor approximately parallel to each other.
  • the supports (24) that connect the central shutter (40) to the cover (20) are four, each of the supports (24) being arranged in the center of one of the sides of the cover (20), and the thinnest section of the laminar configuration of the support (24) is left facing the front air intake (F).
  • the joining means (15,16,22,23) between the cover (20) and the main body (10) comprise projections (15, 16) arranged in the upper end (11) of the main body (10) and some housings (22,23) arranged on the inside of the cover (20).
  • a stepped area is established to establish a stop for inserting the projections (15,16) in the housings (22,23 ).
  • the removable connecting means comprise three projections (15) and three one-way housings (22), and one projection (16) and one another different way to allow unambiguous mounting.
  • the projection (16) and the housing (23) of the other different shape are open on the inside to allow the passage of the light guide of the indicator light.
  • each of the four sides of the lid (20) has a concave radius of curvature, such that the first distance (D) at which each side of the lid is separated (20) of the main body (10) is variable along the side of the cover (20).
  • Each side of the cover (20) presents the maximum separation (Dmax) in the center of said side and presents the minimum separation (Dmin) at the ends of said side.
  • the radius of curvature of the sides of the cover (20) allows the maximum separation to originate in a position close to the opening (12) of the main body (10) through which the air is sucked, while the minimum separation is originates in the positions furthest from the opening (12).
  • each side of the cover (20) is between 300mm and 450mm.
  • each of the four sides of the central plug (40) has a concave radius of curvature, such that the second distance (d) at which each side of the plug is separated center (40) of the lid (20) is variable along the side of the central shutter (40).
  • Each side of the central plug (40) has the maximum separation in the center of said side and has the minimum separation at the ends of said side.
  • the radius of curvature of the sides of the central plug (40) allows the maximum separation to originate in a position close to the opening (12) of the main body (10) through which the air while the minimum separation originates from the positions furthest from the opening (12).
  • the references regarding the maximum and minimum separation between the central shutter (40) and the cover (20) are not shown in the figures.
  • each side of the central shutter (40) is between 300mm and 450mm.
  • the radius of curvature on each side of the cap (20) and the central plug (40) is the same, so that a continuous curvature is maintained between the cap (20) and the central plug (40) which improves the aesthetics of the extractor.
  • Figures 8A, 8B and 8C show a comparison of the direction followed by the flow of the exhaust air in three exhaust fans.
  • Figure 8A shows a prior art extractor with a front air intake (F)
  • Figure 8B shows a prior art extractor with a lateral air intake (S)
  • Figure 8C shows an extractor according to the invention with a side air intake (S) and a front air intake (F).
  • the extractor of figure 8A has a front cover is orified and the air is sucked in a coaxial direction with the propeller axis, passing through a protective grille, while the extractor of figure 8B has a front cover smooth that does not have any holes, and in this case the air is sucked in laterally, from the four sides of the extractor.
  • the extractor of figure 8A has the drawback that it is not very aesthetic since it leaves the grille and the propeller visible, in addition, the dirt that tends to adhere to them is difficult to remove due to the irregular shapes of both.
  • it has the advantage that the air flow is continuous, without changes in direction, which results in high aerodynamic efficiency.
  • the extractor of figure 8B has the advantage that it does not get dirty and in case that happens, since the front cover is smooth, it is very easy to clean.
  • it has the disadvantage of lower performance than the extractor of figure 8A.
  • the four air flows enter from the four sides in a direction perpendicular to the exit direction, which forces the air to make a 90 ° turn, also when the four flows enter in opposite directions two to two, they collide with each other inside the extractor just below the lid producing turbulence, greater noise and a decrease in the flow and pressure performance of the extractor due to this shock and those turbulences.
  • the extractor of the invention (see figure 8C) combines the advantages of the extractors of figures 8A and 8B, without presenting any of its drawbacks.
  • the cover (20) has the central opening (21) partially closed by the central shutter (40) so that between them two air passages are created (in the case of rectangular figures) of dimensions calculated to cause the frontal flow air (F) (dashed lines) with a sufficient air speed to help make the 90 ° turn to the four lateral air flows (S) (continuous line), thus avoiding the collision between them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Ventilation (AREA)

Abstract

The invention relates to a double-inlet air extractor comprising a main body (10) having an upper end (11) with an opening (12) for the intake of air, a cover (20) disposed over the upper end (11) of the main body (10), and a fan-motor assembly (30) accommodated in the main body (10), wherein the cover (20) is separated from the opening (12) in the main body (10) by a first distance (D), such that a lateral inlet (S) for the intake of air is defined between the cover (20) and the opening (12) in the main body (10), and wherein the cover (20) has a central opening (21) that is partially covered by a central cap (40), with said central cap (40) being separated from the central opening (21) in the cover (20) by a second distance (d), such that a front inlet (F) for the intake of air is defined between the central cap (40) and the central opening (21) in the cover (20).

Description

DESCRIPCIÓN DESCRIPTION
EXTRACTOR DE DOBLE ENTRADA DE AIRE DOUBLE AIR INLET EXTRACTOR
Sector de la técnica Technical sector
La presente invención se refiere a un extractor de aire diseñado con una doble entrada de aspiración de aire para conseguir unas condiciones de ventilación eficientes y confortables en cuartos de baño, cocinas y estancias similares de locales residenciales o comerciales. The present invention refers to an air extractor designed with a double air intake to achieve efficient and comfortable ventilation conditions in bathrooms, kitchens and similar rooms in residential or commercial premises.
Estado de la técnica State of the art
Para la renovación del aire viciado, o contaminado, de recintos cerrados, tal como por ejemplo cuartos de baño o cocinas, es conocido el empleo de extractores que absorben el aire del interior del recinto y lo expulsan al exterior a través de un conducto de evacuación al que están conectados los extractores. For the renovation of stale, or polluted air, in closed rooms, such as bathrooms or kitchens, it is known to use exhaust fans that absorb the air inside the room and expel it to the outside through an exhaust duct. to which the extractors are connected.
Los extractores de aire comprenden un cuerpo principal en el que está dispuesto un conjunto hélice-motor para absorción del aire a extraer y una tapa que está dispuesta sobre el extremo superior del cuerpo principal, cerrándolo por dicho extremo. Véase por ejemplo el documento EP1816728B1 , o el documento EP2012412B1. The air extractors comprise a main body in which a propeller-motor assembly is arranged for absorption of the air to be extracted and a cover that is arranged on the upper end of the main body, closing it at said end. See for example document EP1816728B1, or document EP2012412B1.
El cuerpo principal del extractor de aire tiene en su extremo superior una abertura para aspiración del aire, estando la hélice del conjunto hélice-motor dispuesta aproximadamente en dicha abertura del cuerpo principal, y teniendo el cuerpo principal un extremo inferior para conexión con el conducto de evacuación del aire. La tapa que cierra el extremo superior del cuerpo principal tiene una abertura central provista de una rejilla, estando dicha abertura central de la tapa alineada con la abertura del cuerpo principal en donde se dispone la hélice, tal que el aire es aspirado por la hélice desde la abertura central de la tapa hacia la abertura del cuerpo principal para conducirlo hacia el conducto de evacuación. The main body of the air extractor has at its upper end an opening for air intake, the propeller of the propeller-motor assembly being arranged approximately in said opening of the main body, and the main body having a lower end for connection with the air duct. air evacuation. The cover that closes the upper end of the main body has a central opening provided with a grid, said central opening of the cover being aligned with the opening of the main body where the propeller is arranged, such that air is sucked in by the propeller from the central opening of the lid towards the opening of the main body to lead it towards the evacuation duct.
Durante el uso del extractor, es habitual que el polvo, y otro tipo de suciedad dispersa en el aire, tienda a quedarse adherido a la rejilla, y dado que la rejilla queda expuesta a la vista, resulta en un aspecto estético inadecuado del extractor. Además, los extractores se ubican generalmente en posiciones elevadas de los recintos, como por ejemplo en el techo, o en una parte superior de una pared, de manera que el acceso a los mismos para su limpieza resulta especialmente complicado, lo cual provoca que no se limpien con la frecuencia necesaria para mejorar su apariencia. Este problema se agrava dadas las condiciones de suciedad de los recintos en los que se dispone el extractor, por lo que la rejilla tiende a ensuciarse al poco tiempo de uso. During use of the extractor, it is common for dust, and other types of dirt dispersed in the air, to tend to stick to the grille, and since the grille is exposed to view, it results in an inadequate aesthetic appearance of the extractor. In addition, the extractors are generally located in elevated positions in the enclosures, such as on the ceiling, or in a upper part of a wall, so that access to them for cleaning is especially difficult, which causes them not to be cleaned as often as necessary to improve their appearance. This problem is aggravated given the dirty conditions of the rooms in which the extractor is arranged, so the grill tends to get dirty after a short time of use.
Para resolver está problemática, por ejemplo, son conocidos los extractores de aire que tienen una tapa ciega sin abertura central, y sin rejilla, de manera que no se acumula polvo en una zona visible del extractor, mejorándose así la apariencia estética del mismo. To solve this problem, for example, air extractors are known that have a blind cover without a central opening, and without a grid, so that dust does not accumulate in a visible area of the extractor, thus improving its aesthetic appearance.
Este tipo de extractores de aire tienen la misma configuración que los extractores con rejilla anteriormente descritos, salvo porque la tapa no tiene la abertura central con la rejilla, y porque la tapa queda dispuesta sobre el cuerpo principal pero separada una cierta distancia del cuerpo principal. De esta manera, el aire es aspirado lateralmente por la separación establecida entre la tapa y el cuerpo principal, para dirigirlo hacia la abertura del cuerpo principal en donde se dispone la hélice, la cual a su vez dirige el aire hacia el conducto de evacuación. Aunque con esta solución se mejora la apariencia estética exterior, lo cierto es que este tipo de extractores de aire presentan unas condiciones de ventilación menos eficientes que los extractores que toman el aire frontalmente a través de la rejilla de la abertura central de la tapa. This type of air extractors have the same configuration as the previously described grille extractors, except that the cover does not have the central opening with the grille, and that the cover is arranged on the main body but spaced a certain distance from the main body. In this way, the air is sucked in laterally through the established gap between the cover and the main body, to direct it towards the opening of the main body where the propeller is arranged, which in turn directs the air towards the evacuation duct. Although the exterior aesthetic appearance is improved with this solution, the truth is that this type of exhaust fan has less efficient ventilation conditions than the exhaust fans that take air in through the grille of the central opening of the lid.
Objeto de la invención Object of the invention
De acuerdo con la presente invención se propone un extractor de aire con una doble entrada de aspiración de aire que permite conseguir unas condiciones de ventilación eficientes de los recintos a ventilar además de presentar un aspecto estético mejorado ya que no se acumula suciedad en una zona visible del extractor. In accordance with the present invention, an air extractor with a double air intake is proposed, which allows efficient ventilation conditions to be achieved for the rooms to be ventilated, in addition to presenting an improved aesthetic appearance since dirt does not accumulate in a visible area. of the extractor.
El extractor de doble entrada de aire propuesto por la invención comprende: The double air inlet extractor proposed by the invention comprises:
• un cuerpo principal que tiene un extremo superior con una abertura para aspiración del aire, una tapa dispuesta sobre el extremo superior del cuerpo principal, y • un conjunto hélice-motor alojado en el cuerpo principal, estando la hélice del conjunto hélice-motor dispuesta en la abertura para la aspiración del aire del cuerpo principal. • a main body having an upper end with an opening for aspiration of air, a cover arranged on the upper end of the main body, and • a propeller-motor assembly housed in the main body, the propeller of the propeller-motor assembly being arranged in the opening for the aspiration of air from the main body.
Por un lado, la tapa está separada una primera distancia de la abertura del extremo superior del cuerpo principal, tal que entre la tapa y la abertura del extremo superior del cuerpo principal se define una entrada lateral de aspiración de aire para la conducción del aire desde la entrada lateral hacia la abertura del extremo superior del cuerpo principal. On the one hand, the cover is spaced a first distance from the opening at the upper end of the main body, such that between the cover and the opening at the upper end of the main body there is defined a side air intake for air conduction from the side entrance to the opening at the upper end of the main body.
Por otro lado, la tapa tiene una abertura central que está parcialmente cubierta por un obturador central, estando el obturador central separado una segunda distancia de la abertura central de la tapa, tal que entre el obturador central y la abertura central de la tapa se define una entrada frontal de aspiración de aire para la conducción del aire desde la entrada frontal hacia la abertura del cuerpo principal. On the other hand, the lid has a central opening that is partially covered by a central shutter, the central shutter being separated a second distance from the central opening of the lid, such that between the central shutter and the central opening of the lid is defined a front air intake for air conduction from the front inlet to the main body opening.
De esta manera el extractor permite establecer una doble entrada de aspiración de aire, la entrada lateral definida entre la tapa y el cuerpo principal, y la entrada frontal definida entre la tapa y el obturador central, las cuales mejoran las condiciones de ventilación del extractor de aire. In this way the extractor allows to establish a double air intake, the lateral entrance defined between the cover and the main body, and the front entrance defined between the cover and the central shutter, which improve the ventilation conditions of the extractor of air.
La disposición de la entrada lateral de aspiración de aire con respecto a la abertura del cuerpo principal provoca que el flujo de aire tenga que realizar un giro para dirigirse hacia la abertura, con lo que se pueden generar choques y turbulencias que afectan al rendimiento de extracción del aire, sin embargo, la entrada frontal de aspiración de aire ayuda a dirigir ese flujo de aire que entra por la entrada lateral facilitando el giro, de forma que se reducen dichos choques y turbulencias. The arrangement of the air intake side inlet with respect to the main body opening causes the air flow to have to make a turn to go towards the opening, which can generate shocks and turbulences that affect the extraction performance However, the front air intake intake helps direct that air flow that enters through the side inlet facilitating rotation, so that such shocks and turbulence are reduced.
Además, el obturador central queda dispuesto cubriendo parcialmente la abertura central de la tapa por la que el extractor aspira frontalmente el aire, de manera que se que mejora la apariencia estética del extractor al no haber partes visibles del mismo en las que se acumule suciedad, ya que están quedan ocultas por el obturador central. In addition, the central shutter is arranged partially covering the central opening of the cover through which the extractor sucks the air frontally, so that the aesthetic appearance of the extractor is improved as there are no visible parts of it in which dirt accumulates, since they are hidden by the central shutter.
De acuerdo con ello, el extractor de aire objeto de la invención resulta de unas características muy ventajosas para la función a la que está destinado, adquiriendo vida propia y carácter preferente respecto de otros extractores de aire convencionales que se utilizan para esa función. Descripción de las figuras Accordingly, the air extractor object of the invention results from some very advantageous characteristics for the function for which it is intended, acquiring its own life and preferential character compared to other conventional air extractors that are used for that function. Description of the figures
La figura 1 muestra una vista en perspectiva de un ejemplo de realización del extractor de aire según la invención. FIG. 1 shows a perspective view of an embodiment of the air extractor according to the invention.
La figura 2 muestra una vista lateral del extractor de aire de la figura 1. Figure 2 shows a side view of the air extractor of figure 1.
La figura 3 muestra una vista en sección transversal del extractor según la sección lll-lll indicada en la figura 2. Figure 3 shows a cross-sectional view of the extractor according to the section lll-lll indicated in figure 2.
La figura 4 muestra una vista superior del extractor de aire de la figura 1. Figure 4 shows a top view of the air extractor of figure 1.
La figura 5 muestra otra vista en sección transversal del extractor según la sección V-V indicada en la figura 4. Figure 5 shows another cross-sectional view of the extractor according to the V-V section indicated in Figure 4.
La figura 6 muestra una vista en perspectiva seccionada del extremo superior del cuerpo principal, la tapa y el obturador central. Figure 6 shows a sectional perspective view of the upper end of the main body, the cover and the central shutter.
La figura 7 muestra una vista en perspectiva de la tapa vista desde su cara inferior. Figure 7 shows a perspective view of the cover seen from its underside.
La figura 8A muestra una vista esquemática de un extractor según el estado de la técnica anterior con una entrada frontal de aspiración de aire. Figure 8A shows a schematic view of an extractor according to the state of the prior art with a front air intake.
La figura 8B muestra una vista esquemática de un extractor según el estado de la técnica anterior con una entrada lateral de aspiración de aire (S). Figure 8B shows a schematic view of an extractor according to the state of the prior art with a side air intake (S).
La figura 8C una vista esquemática de un extractor según la invención con una entrada lateral de aspiración de aire y una entrada frontal de aspiración de aire. Figure 8C is a schematic view of an extractor according to the invention with a lateral air intake and a front air intake.
Descripción detallada de la invención Detailed description of the invention
En la figura 1 se muestra una realización del extractor de aire para la ventilación de cuartos de baño, cocinas, o estancias similares de recintos residenciales o comerciales Figure 1 shows an embodiment of the exhaust fan for ventilation of bathrooms, kitchens, or similar rooms in residential or commercial premises.
El extractor de aire comprende un cuerpo principal (10), una tapa (20) que está dispuesta sobre el cuerpo principal (10) y un conjunto hélice-motor (30) que está alojado en el interior del cuerpo principal (10). The air extractor comprises a main body (10), a cover (20) that is arranged on the main body (10) and a propeller-motor assembly (30) that is housed inside the main body (10).
El cuerpo principal (10) tiene un extremo superior (1 1) en el que hay una abertura (12) por la que el conjunto hélice-motor (30) aspira el aire, y un extremo inferior (13), opuesto al extremo superior (1 1), para la conexión del cuerpo principal (10) con un conducto de evacuación del aire (no representado). The main body (10) has an upper end (1 1) in which there is an opening (12) through which the propeller-motor assembly (30) sucks air, and a lower end (13), opposite the upper end (1 1), for the connection of the main body (10) with an air evacuation duct (not shown).
La hélice del conjunto hélice-motor (30) está dispuesta en la abertura (12) del extremo superior (1 1) del cuerpo principal (10) para provocar la aspiración del aire a través de la abertura (12). The propeller of the propeller-motor assembly (30) is arranged in the opening (12) of the upper end (1 1) of the main body (10) to cause the aspiration of air through the opening (12).
La abertura (12) del extremo superior (11) del cuerpo principal (10) tiene una rejilla (14) para protección ante posibles contactos de un usuario con el conjunto hélice-motor (30) en caso de retirar la tapa (20) con el extractor en marcha. The opening (12) of the upper end (11) of the main body (10) has a grid (14) to protect against possible contact of a user with the propeller-motor assembly (30) in case of removing the cover (20) with the extractor running.
En el extremo superior (11) del cuerpo principal (10) se aloja la electrónica de funcionamiento del extractor. At the upper end (11) of the main body (10) the extractor operating electronics are housed.
La tapa (20) tiene una abertura central (21), estando la abertura central (21) de la tapa (20) parcialmente cubierta por un obturador central (40). The lid (20) has a central opening (21), the central opening (21) of the lid (20) being partially covered by a central shutter (40).
Por un lado, la tapa (20) está separada una primera distancia (D) de la abertura (12) del extremo superior (1 1) del cuerpo principal (10), de forma que se define una entrada lateral de aspiración de aire (S), mientras que por otro lado, el obturador central (40) está separado una segunda distancia (d) de la abertura central (21) de la tapa (20), de forma que se define una entrada frontal de aspiración de aire (F). On the one hand, the cover (20) is separated a first distance (D) from the opening (12) of the upper end (1 1) of the main body (10), so that a lateral air intake entrance is defined ( S), while on the other hand, the central shutter (40) is separated a second distance (d) from the central opening (21) of the cover (20), so that a front air intake entrance is defined ( F).
Con esta configuración se establece una doble entrada de aspiración de aire en el extractor. Así, la hélice del conjunto hélice-motor (30) ubicada en la abertura (12) del cuerpo principal (10), por un lado, succiona el aire para conducirlo desde la entrada lateral de aspiración de aire (S) hacia la abertura (12) del cuerpo principal (10), y por otro lado, la hélice también succiona el aire para conducirlo desde la entrada frontal de aspiración de aire (F) hacia la abertura frontal (21) de la tapa (20), y desde ahí hacia la abertura (12) del cuerpo principal (10), evacuándose finalmente todo el aire succionado por el conducto de evacuación del aire que se conecta al extremo inferior (13) del cuerpo principal (10). La abertura (12) del cuerpo principal (10) y la abertura central (21) de la tapa (20) están alineadas, estando el obturador central (40) dispuesto alineado con ambas aberturas (12,21) del cuerpo principal (10) y de la tapa (20). De esta manera, el obturador central (40) queda dispuesto impidiendo la visión frontal de la rejilla (14) que cubre la abertura (12) del cuerpo principal, en donde se puede acumular suciedad. With this configuration a double air intake is established in the extractor. Thus, the propeller of the propeller-motor assembly (30) located in the opening (12) of the main body (10), on the one hand, sucks the air to conduct it from the lateral air intake intake (S) towards the opening ( 12) of the main body (10), and on the other hand, the propeller also sucks air to guide it from the front air intake (F) to the front opening (21) of the cover (20), and from there towards the opening (12) of the main body (10), finally evacuating all the air sucked through the air evacuation duct that connects to the lower end (13) of the main body (10). The opening (12) of the main body (10) and the central opening (21) of the cover (20) are aligned, the central shutter (40) being arranged aligned with both openings (12,21) of the main body (10) and the cover (20). In this way, the central shutter (40) is arranged preventing the front view of the grid (14) that covers the opening (12) of the main body, where dirt can accumulate.
Así, el eje imaginario que pasa por el centro de la abertura (12) del cuerpo principal (10) y el eje imaginario que pasa por el centro de la abertura central (21) de la tapa (20) son coaxiales, estando el eje imaginario que pasa por el centro del obturador central (40) igualmente alineado con los ejes de ambas aberturas (12,21) del cuerpo principal (10) y de la tapa (20). Thus, the imaginary axis passing through the center of the opening (12) of the main body (10) and the imaginary axis passing through the center of the central opening (21) of the cover (20) are coaxial, the axis being imaginary that passes through the center of the central shutter (40) also aligned with the axes of both openings (12,21) of the main body (10) and of the cover (20).
El obturador central (40) tiene una dimensión exterior que es igual, o inferior, a la dimensión interior de la abertura central (21) de la tapa (20). Es decir, la proyección vertical del obturador central (40) es igual o inferior a la proyección vertical de la abertura central (21). Esto permite que el flujo que entra por la entrada frontal de aspiración de aire (F) pueda seguir una dirección lo más rectilínea posible hace la abertura (12) del cuerpo principal (10), tal y como se puede observar en la vista en sección de la figura 5. The central plug (40) has an external dimension that is equal to, or less than, the internal dimension of the central opening (21) of the cover (20). That is, the vertical projection of the central shutter (40) is equal to or less than the vertical projection of the central opening (21). This allows the flow entering through the front air intake (F) to follow a direction as rectilinear as possible makes the opening (12) of the main body (10), as can be seen in the sectional view of figure 5.
El extractor adicionalmente comprende unos medios de unión (15, 16,22,23) para establecer una unión removible entre la tapa (20) y el extremo superior (11) del cuerpo principal (10). De esta manera se puede desmontar la tapa (20) del cuerpo principal (10) para facilitar las labores de limpieza cuando sea necesario. The extractor additionally comprises connecting means (15, 16,22,23) to establish a removable connection between the cover (20) and the upper end (11) of the main body (10). In this way, the cover (20) can be removed from the main body (10) to facilitate cleaning tasks when necessary.
Preferentemente, uno (16,23) de los medios de unión (15, 16,22,23) tiene una forma diferente a los otros medios de unión (15,22) para establecer un montaje inequívoco de la tapa (20) en el cuerpo principal (10). Preferably, one (16,23) of the connecting means (15, 16,22,23) has a different shape from the other connecting means (15,22) to establish an unequivocal mounting of the cover (20) on the main body (10).
Los medios de unión (16,23) diferentes adicionalmente se emplean para alojar un indicador luminoso de un estado de funcionamiento del extractor. The different connecting means (16,23) are additionally used to house an indicator light of an operating state of the extractor.
El obturador central (40) está unido a la tapa (20) a través de unos soportes (24). The central shutter (40) is attached to the cover (20) through supports (24).
Los soportes (24) tienen una configuración laminar con una sección de menor espesor que queda dispuesta enfrentada a la entrada frontal de aspiración de aire (F). De esta manera, los soportes (24) ofrecen una resistencia al paso de aire mínima, reduciéndose así el posible ruido que se pueda generar. The supports (24) have a laminar configuration with a thinner section that is arranged facing the front air intake (F). In this way, the supports (24) offer a minimum resistance to the passage of air, thus reducing possible noise that can be generated.
Los soportes (24) están dispuestos en posiciones diametralmente opuestas y equidistantes entre sí, estando cada uno de los soportes (24) dispuesto en el centro de uno de los lados de la tapa (20). The supports (24) are arranged in diametrically opposite and equidistant positions, each of the supports (24) being arranged in the center of one of the sides of the cover (20).
La tapa (20) y el obturador central (40) están fabricados en una única pieza que se obtiene preferentemente mediante un moldeo por inyección de material plástico. The lid (20) and the central plug (40) are made in a single piece that is preferably obtained by means of an injection molding of plastic material.
La tapa (20) tiene una zona abombada (25) en la periferia de la abertura central (21) que permite dirigir el flujo de aire que entra por la entrada frontal de aspiración de aire (F). The cover (20) has a bulged area (25) on the periphery of the central opening (21) that allows directing the air flow that enters through the front air intake (F).
La forma y disposición de los soportes (24) están especialmente diseñados para optimizar el moldeo por inyección y permitir un buen flujo del material plástico durante el moldeo. The shape and arrangement of the supports (24) are specially designed to optimize injection molding and allow a good flow of the plastic material during molding.
Experimentalmente se ha comprobado que las condiciones de extracción de aire se ven mejoradas para unas dimensiones preferentes de la primera y segunda distancias (D,d) que permiten la doble entrada de aire. Así, la primera distancia (D) de separación entre la tapa (20) y la abertura (12) del extremo superior (11) del cuerpo principal (10) está preferentemente comprendida entre 10 mm y 20 mm, y la segunda distancia (d) de separación entre el obturador central (40) y la abertura central (21) de la tapa (20) está preferentemente comprendida entre 5 mm y 10 mm. Experimentally, it has been verified that the air extraction conditions are improved for preferred dimensions of the first and second distances (D, d) that allow double air entry. Thus, the first distance (D) of separation between the cover (20) and the opening (12) of the upper end (11) of the main body (10) is preferably comprised between 10 mm and 20 mm, and the second distance (d ) of separation between the central shutter (40) and the central opening (21) of the cover (20) is preferably comprised between 5 mm and 10 mm.
Como queda representado mediante las flechas en las figuras, las dimensiones preferentes de la primera y segunda distancias (D,d) indicadas anteriormente son dimensiones medidas verticalmente desde uno de los lados del obturador central (40) y de la tapa (20) respectivamente. As represented by the arrows in the figures, the preferred dimensions of the first and second distances (D, d) indicated above are dimensions measured vertically from one of the sides of the central plug (40) and the cover (20) respectively.
En cualquier caso, la separación entre la tapa (20) y la abertura (12), y la separación entre el obturador central (40) y la abertura central (21), puede ser una separación en dirección vertical, como se muestra en el ejemplo de realización de las figuras, o puede ser una separación en dirección horizontal, o una separación en una dirección oblicua, sin que ello altere el concepto de la invención de generación de la doble de entrada de aire con el obturador central (40) impidiendo que haya partes visibles del extractor en donde se acumule suciedad. Preferentemente, la tapa (20) tiene una forma cóncava de manera que la primera distancia (D) en la que está separada la tapa (20) de la abertura (12) del cuerpo principal (10) es variable a lo largo de la tapa (20), presentado la primera distancia (D) una zona central con una separación máxima (Dmax) entre la tapa (20) y la abertura (12) del cuerpo principal (10) y unas zonas extremas con una separación mínima (Dmin) entre la tapa (20) y la abertura (12) del cuerpo principal (10). In either case, the gap between the lid (20) and the opening (12), and the gap between the center shutter (40) and the center opening (21), may be a gap in the vertical direction, as shown in example of embodiment of the figures, or it can be a separation in the horizontal direction, or a separation in an oblique direction, without altering the concept of the invention of generating the double air inlet with the central shutter (40) preventing that there are visible parts of the extractor where dirt accumulates. Preferably, the cover (20) has a concave shape such that the first distance (D) in which the cover (20) is separated from the opening (12) of the main body (10) is variable along the cover (20), the first distance (D) presenting a central zone with a maximum separation (Dmax) between the cover (20) and the opening (12) of the main body (10) and some extreme zones with a minimum separation (Dmin) between the cover (20) and the opening (12) of the main body (10).
Preferentemente, el obturador central (40) también tiene una forma cóncava, de manera que la segunda distancia (d) en la que está separada el obturador central (40) de la abertura central (21) de la tapa (20) también es variable a lo largo del obturador central (40). Así, la segunda distancia (d) también presenta una zona central con una separación máxima entre el obturador central (40) y la abertura central (21) de la tapa (20) y unas zonas extremas con una separación mínima entre el obturador central (40) y la abertura central (21) de la tapa (20). Preferably, the central shutter (40) also has a concave shape, so that the second distance (d) in which the central shutter (40) is separated from the central opening (21) of the cover (20) is also variable along the central shutter (40). Thus, the second distance (d) also has a central zone with a maximum separation between the central shutter (40) and the central opening (21) of the cover (20) and extreme zones with a minimum separation between the central shutter ( 40) and the central opening (21) of the cover (20).
Como se observa en el ejemplo de realización mostrado en las figuras 1 a 7, el cuerpo principal (10) tiene una configuración preferentemente cilindrica, mientras que el extremo superior (1 1) del cuerpo principal (10), la tapa (20) y su abertura central (21), así como el obturador central (40), tienen una configuración preferentemente cuadrada. En cualquier caso, la configuración cuadrada no es limitativa, pudiendo presentar el obturador central (40) y/o la tapa (20) otro tipo de formas sin que ello altere el concepto de la invención, tal como por ejemplo otra forma poligonal de al menos tres lados, o una forma circular. As seen in the exemplary embodiment shown in Figures 1 to 7, the main body (10) has a preferably cylindrical configuration, while the upper end (1 1) of the main body (10), the cover (20) and its central opening (21), as well as the central shutter (40), have a preferably square configuration. In any case, the square configuration is not limiting, the central shutter (40) and / or the cover (20) being able to present other types of shapes without altering the concept of the invention, such as, for example, another polygonal shape of minus three sides, or a circular shape.
De acuerdo con dicho ejemplo de realización preferente, el extremo superior (11) del cuerpo principal (10), la tapa (20), su abertura central (21), y el obturador central (40) tienen respectivamente cuatro lados, siendo los lados de cada una de dichas partes (1 1 ,20,21 ,40) del extractor aproximadamente paralelos entre sí. According to said preferred embodiment, the upper end (11) of the main body (10), the cover (20), its central opening (21), and the central shutter (40) respectively have four sides, the sides being of each of said parts (1 1, 20,21, 40) of the extractor approximately parallel to each other.
Como se observa en detalle en las figuras 3, 5 y 7, los soportes (24) que unen el obturador central (40) a la tapa (20) son cuatro, estando cada uno de los soportes (24) dispuesto en el centro de uno de los lados de la tapa (20), y quedando la sección de menor espesor de la configuración laminar del soporte (24) dispuesta enfrentada a la entrada frontal de aspiración de aire (F). As observed in detail in Figures 3, 5 and 7, the supports (24) that connect the central shutter (40) to the cover (20) are four, each of the supports (24) being arranged in the center of one of the sides of the cover (20), and the thinnest section of the laminar configuration of the support (24) is left facing the front air intake (F).
Como se muestra en detalle en las figuras 3 y 5, los medios de unión (15,16,22,23) entre la tapa (20) y el cuerpo principal (10) comprenden unos salientes (15, 16) dispuestos en el extremo superior (11) del cuerpo principal (10) y unos alojamientos (22,23) dispuestos en la cara interior de la tapa (20). As shown in detail in Figures 3 and 5, the joining means (15,16,22,23) between the cover (20) and the main body (10) comprise projections (15, 16) arranged in the upper end (11) of the main body (10) and some housings (22,23) arranged on the inside of the cover (20).
Como se muestra en la figura 5, entre los salientes (15, 16) y los alojamientos (22,23) se establece una zona escalonada para establecer un tope de inserción de los salientes (15,16) en los alojamientos (22,23). As shown in figure 5, between the projections (15, 16) and the housings (22,23) a stepped area is established to establish a stop for inserting the projections (15,16) in the housings (22,23 ).
Concretamente, y como se muestra en el ejemplo de realización mostrado en las figuras, los medios de unión removibles comprenden tres salientes (15) y tres alojamientos (22) de una forma, y un saliente (16) y un alojamiento (23) de otra forma diferente para permitir el montaje inequívoco. Specifically, and as shown in the exemplary embodiment shown in the figures, the removable connecting means comprise three projections (15) and three one-way housings (22), and one projection (16) and one another different way to allow unambiguous mounting.
Como se muestra en la figura 5, el saliente (16) y el alojamiento (23) de la otra forma diferente están abiertos por su interior para permitir el paso de la guía luz del indicador luminoso. As shown in figure 5, the projection (16) and the housing (23) of the other different shape are open on the inside to allow the passage of the light guide of the indicator light.
Como se muestra en las figuras 1 y 2, cada uno de los cuatro lados de la tapa (20) tiene un radio de curvatura de forma cóncava, de manera que la primera distancia (D) en la que está separada cada lado de la tapa (20) del cuerpo principal (10) es variable a lo largo del lado de la tapa (20). Cada lado de la tapa (20) presenta la separación máxima (Dmax) en el centro de dicho lado y presenta la separación mínima (Dmin) en los extremos de dicho lado. El radio de curvatura de los lados de la tapa (20) permite que la separación máxima se origine en una posición cercana a la abertura (12) del cuerpo principal (10) por la que se aspira el aire, mientras que la separación mínima se origina en las posiciones más alejadas a la abertura (12). As shown in Figures 1 and 2, each of the four sides of the lid (20) has a concave radius of curvature, such that the first distance (D) at which each side of the lid is separated (20) of the main body (10) is variable along the side of the cover (20). Each side of the cover (20) presents the maximum separation (Dmax) in the center of said side and presents the minimum separation (Dmin) at the ends of said side. The radius of curvature of the sides of the cover (20) allows the maximum separation to originate in a position close to the opening (12) of the main body (10) through which the air is sucked, while the minimum separation is originates in the positions furthest from the opening (12).
Preferente el radio de curvatura de cada lado de la tapa (20) es de entre 300mm y 450mm. Preferably the radius of curvature of each side of the cover (20) is between 300mm and 450mm.
También como se muestra en las figuras 1 y 2, cada uno de los cuatro lados del obturador central (40) tiene un radio de curvatura de forma cóncava, de manera que la segunda distancia (d) en la que está separada cada lado del obturador central (40) de la tapa (20) es variable a lo largo del lado del obturador central (40). Cada lado del obturador central (40) presenta la separación máxima en el centro de dicho lado y presenta la separación mínima en los extremos de dicho lado. Al igual que se ha descrito anteriormente, el radio de curvatura de los lados del obturador central (40) permite que la separación máxima se origine en una posición cercana a la abertura (12) del cuerpo principal (10) por la que se aspira el aire, mientras que la separación mínima se origina en las posiciones más alejadas a la abertura (12). Por motivos de claridad en las figuras, las referencias con respecto a la separación máxima y mínima entre el obturador central (40) y la tapa (20) no se muestran en las figuras. Also as shown in Figures 1 and 2, each of the four sides of the central plug (40) has a concave radius of curvature, such that the second distance (d) at which each side of the plug is separated center (40) of the lid (20) is variable along the side of the central shutter (40). Each side of the central plug (40) has the maximum separation in the center of said side and has the minimum separation at the ends of said side. As previously described, the radius of curvature of the sides of the central plug (40) allows the maximum separation to originate in a position close to the opening (12) of the main body (10) through which the air while the minimum separation originates from the positions furthest from the opening (12). For reasons of clarity in the figures, the references regarding the maximum and minimum separation between the central shutter (40) and the cover (20) are not shown in the figures.
Preferente el radio de curvatura de cada lado del obturador central (40) es de entre 300mm y 450mm. Preferably the radius of curvature of each side of the central shutter (40) is between 300mm and 450mm.
Aún más preferentemente el radio de curvatura de cada lado de la tapa (20) y del obturador central (40) es el mismo, de manera que se mantiene una curvatura continua entre la tapa (20) y el obturador central (40) que mejora la estética del extractor. Even more preferably the radius of curvature on each side of the cap (20) and the central plug (40) is the same, so that a continuous curvature is maintained between the cap (20) and the central plug (40) which improves the aesthetics of the extractor.
En las figuras 8A,8B y 8C se muestra una comparativa de la dirección que sigue el flujo del aire extraído en tres extractores de aire. La figura 8A muestra un extractor según el estado de la técnica anterior con una entrada frontal de aspiración de aire (F), la figura 8B muestra un extractor según el estado de la técnica anterior con una entrada lateral de aspiración de aire (S), y la figura 8C muestra un extractor según la invención con una entrada lateral de aspiración de aire (S) y una entrada frontal de aspiración de aire (F). Figures 8A, 8B and 8C show a comparison of the direction followed by the flow of the exhaust air in three exhaust fans. Figure 8A shows a prior art extractor with a front air intake (F), Figure 8B shows a prior art extractor with a lateral air intake (S), and Figure 8C shows an extractor according to the invention with a side air intake (S) and a front air intake (F).
El extractor de la figura 8A tiene una tapa frontal está orificada y el aire es aspirado según una dirección coaxial con el eje de la hélice, pasando a través de una rejilla de protección, mientras que el extractor de a la figura 8B tiene una tapa frontal lisa que no presenta ningún orificio, y en este caso el aire es aspirado lateralmente, por los cuatro costados del extractor. The extractor of figure 8A has a front cover is orified and the air is sucked in a coaxial direction with the propeller axis, passing through a protective grille, while the extractor of figure 8B has a front cover smooth that does not have any holes, and in this case the air is sucked in laterally, from the four sides of the extractor.
El extractor de la figura 8A tiene el inconveniente de que no es muy estético ya que deja a la vista la rejilla y la hélice, además, la suciedad que tiende a adherirse en ellas es difícil de eliminar por las formas irregulares de ambas. Sin embargo, presenta la ventaja de que el flujo del aire es continuo, sin cambios de dirección, lo que redunda en una alta eficiencia aerodinámica. The extractor of figure 8A has the drawback that it is not very aesthetic since it leaves the grille and the propeller visible, in addition, the dirt that tends to adhere to them is difficult to remove due to the irregular shapes of both. However, it has the advantage that the air flow is continuous, without changes in direction, which results in high aerodynamic efficiency.
El extractor de la figura 8B tiene la ventaja de que no se ensucia y en caso de que eso ocurra, al ser la tapa frontal lisa, es muy fácil de limpiar. Sin embargo, tiene el inconveniente de unas menores prestaciones que el extractor de la figura 8A. En efecto, los cuatro flujos de aire entran por los cuatro lados en dirección perpendicular a la dirección de salida lo que obliga al aire a efectuar un giro de 90°, además al entrar los cuatro flujos en sentidos opuestos dos a dos, chocan entre sí en el interior del extractor justo debajo de la tapa produciéndose turbulencias, mayor ruido y un descenso de las prestaciones de caudal y presión del extractor debido a ese choque y a esas turbulencias. The extractor of figure 8B has the advantage that it does not get dirty and in case that happens, since the front cover is smooth, it is very easy to clean. However, it has the disadvantage of lower performance than the extractor of figure 8A. In effect, the four air flows enter from the four sides in a direction perpendicular to the exit direction, which forces the air to make a 90 ° turn, also when the four flows enter in opposite directions two to two, they collide with each other inside the extractor just below the lid producing turbulence, greater noise and a decrease in the flow and pressure performance of the extractor due to this shock and those turbulences.
El extractor de la invención (ver figura 8C) combina las ventajas de los extractores de las figuras 8A y 8B, sin presentar ninguno de sus inconvenientes. La tapa (20) presenta la abertura central (21) parcialmente obturada por el obturador central (40) de manera que entre ambas se crean unos pasos de aire (en el caso de las figuras rectangulares) de unas dimensiones calculadas para originar el flujo frontal de aire (F) (líneas a trazos) con una velocidad de aire suficiente como para ayudar a efectuar el giro de 90° a los cuatro flujos laterales de aire (S) (línea continua), evitando de esta forma el choque entre ellos. La consecuencia de disponer de este flujo frontal (F)“orientador” de los flujos laterales (S) es que las prestaciones aerodinámicas del extractor propuesto por la invención son similares a las prestaciones del extractor de la figura 8A, a la vez que la tendencia al no ensuciamiento y la facilidad de limpieza son similares a las del extractor de la figura 8B. The extractor of the invention (see figure 8C) combines the advantages of the extractors of figures 8A and 8B, without presenting any of its drawbacks. The cover (20) has the central opening (21) partially closed by the central shutter (40) so that between them two air passages are created (in the case of rectangular figures) of dimensions calculated to cause the frontal flow air (F) (dashed lines) with a sufficient air speed to help make the 90 ° turn to the four lateral air flows (S) (continuous line), thus avoiding the collision between them. The consequence of having this frontal flow (F) "guide" of the lateral flows (S) is that the aerodynamic performance of the extractor proposed by the invention are similar to the performance of the extractor of figure 8A, as well as the tendency the non-soiling and the ease of cleaning are similar to those of the extractor of figure 8B.

Claims

REIVINDICACIONES
1 Extractor de doble entrada de aire caracterizado por que comprende: 1 Double air inlet extractor characterized by comprising:
• un cuerpo principal (10) que tiene un extremo superior (11) con una abertura (12) para aspiración del aire, • a main body (10) having an upper end (11) with an opening (12) for air aspiration,
• una tapa (20) dispuesta sobre el extremo superior (11) del cuerpo principal (10), y • a cover (20) arranged on the upper end (11) of the main body (10), and
• un conjunto hélice-motor (30) alojado en el cuerpo principal (10), estando la hélice del conjunto hélice-motor (30) dispuesta en la abertura (12) para la aspiración del aire del cuerpo principal (10), y en donde: • a propeller-motor assembly (30) housed in the main body (10), the propeller of the propeller-motor assembly (30) being arranged in the opening (12) for the aspiration of air from the main body (10), and in where:
o la tapa (20) está separada una primera distancia (D) de la abertura (12) del extremo superior (11) del cuerpo principal (10), tal que entre la tapa (20) y la abertura (12) del extremo superior (11) del cuerpo principal (10) se define una entrada lateral de aspiración de aire (S) para la conducción del aire desde la entrada lateral (S) hacia la abertura (12) del extremo superior (11) del cuerpo principal (10), y en donde or the cover (20) is separated a first distance (D) from the opening (12) of the upper end (11) of the main body (10), such that between the cover (20) and the opening (12) of the upper end (11) of the main body (10), a lateral air intake intake (S) is defined for the conduction of air from the lateral intake (S) to the opening (12) of the upper end (11) of the main body (10). ), and where
o la tapa (20) tiene una abertura central (21) que está parcialmente cubierta por un obturador central (40), estando el obturador central (40) separado una segunda distancia (d) de la abertura central (21) de la tapa (20), tal que entre el obturador central (40) y la abertura central (21) de la tapa (20) se define una entrada frontal de aspiración de aire (F) para la conducción del aire desde la entrada frontal (F) hacia la abertura (12) del cuerpo principal (10). or the lid (20) has a central opening (21) that is partially covered by a central shutter (40), the central shutter (40) being separated a second distance (d) from the central opening (21) of the lid ( 20), such that between the central shutter (40) and the central opening (21) of the cover (20) a front air intake intake (F) is defined for the conduction of air from the front intake (F) to the opening (12) of the main body (10).
2.- Extractor según la reivindicación anterior caracterizado por que el obturador central (40) tiene una dimensión exterior que es igual, o inferior, a la dimensión interior de la abertura central (21) de la tapa (20). 2. Extractor according to the preceding claim, characterized in that the central shutter (40) has an external dimension that is equal to or less than the internal dimension of the central opening (21) of the cover (20).
3.- Extractor según la reivindicación anterior caracterizado por que adicionalmente comprende unos medios de unión (15, 16,22,23) para establecer una unión removible entre la tapa (20) y el extremo superior (11) del cuerpo principal (10). 3. Extractor according to the preceding claim, characterized in that it additionally comprises connecting means (15, 16, 22, 23) to establish a removable connection between the cover (20) and the upper end (11) of the main body (10). .
4 Extractor según la reivindicación anterior caracterizado por que uno (16,23) de los medios de unión (15, 16,22,23) tiene una forma diferente a los otros medios de unión (15,22) para establecer un montaje inequívoco de la tapa (20) en el cuerpo principal (10). Extractor according to the preceding claim, characterized in that one (16,23) of the connecting means (15, 16,22,23) has a different shape from the other connecting means (15,22) to establish an unambiguous assembly of the cover (20) on the main body (10).
5.- Extractor según la reivindicación anterior caracterizado por que los medios de unión (16,23) que tiene la forma diferente alojan un indicador luminoso de un estado de funcionamiento del extractor. 5.- Extractor according to the previous claim, characterized in that the connection means (16,23) having the different shape house a light indicator of a state of operation of the extractor.
6.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que el obturador central (40) está unido a la tapa (20) a través de unos soportes (24). 6. Extractor according to any one of the preceding claims, characterized in that the central shutter (40) is connected to the cover (20) through supports (24).
7.- Extractor según la reivindicación anterior, caracterizado por que los soportes (24) tienen una configuración laminar con una sección de menor espesor que queda dispuesta enfrentada a la entrada frontal de aspiración de aire (F). 7. Extractor according to the preceding claim, characterized in that the supports (24) have a laminar configuration with a section of less thickness that is arranged facing the front air intake (F).
8.- Extractor según la reivindicación 6, o 7, caracterizado por que los soportes (24) están dispuestos en posiciones diametralmente opuestas y equidistantes entre sí, estando cada uno de los soportes (24) dispuesto en el centro de uno de los lados de la tapa (20). 8. Extractor according to claim 6, or 7, characterized in that the supports (24) are arranged in diametrically opposite positions and equidistant from each other, each of the supports (24) being arranged in the center of one of the sides of the cover (20).
9.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que la abertura (12) del cuerpo principal (10) y la abertura central (21) de la tapa (20) están alineadas, estando el obturador central (40) dispuesto alineado con ambas aberturas (12,21). 9. Extractor according to any one of the preceding claims, characterized in that the opening (12) of the main body (10) and the central opening (21) of the cover (20) are aligned, the central plug (40) being arranged aligned with both openings (12,21).
10.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que la tapa (20) tiene una zona abombada (25) en la periferia de la abertura central (21). 10. Extractor according to any one of the preceding claims, characterized in that the cover (20) has a domed area (25) on the periphery of the central opening (21).
1 1.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que la primera distancia (D) de separación entre la tapa (20) y la abertura (12) del extremo superior1 1. Extractor according to any one of the preceding claims, characterized in that the first separation distance (D) between the cover (20) and the opening (12) of the upper end
(1 1) del cuerpo principal (10) está comprendida entre 10 mm y 20 mm. (1 1) of the main body (10) is comprised between 10 mm and 20 mm.
12.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que la segunda distancia (d) de separación entre el obturador central (40) y la abertura central (21) de la tapa (20) está comprendida entre 5 mm y 10 mm. 12. Extractor according to any one of the preceding claims, characterized in that the second distance (d) of separation between the central plug (40) and the central opening (21) of the cover (20) is comprised between 5 mm and 10 mm .
13.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que la tapa (20) tiene una forma cóncava, tal que la primera distancia (D) presenta una zona central con una separación máxima (Dmax) entre la tapa (20) y la abertura (12) del cuerpo principal (10) y unas zonas extremas con una separación mínima (Dmin) entre la tapa (20) y la abertura13. Extractor according to any one of the preceding claims, characterized in that the cover (20) has a concave shape, such that the first distance (D) has a central area with a maximum separation (Dmax) between the cover (20) and the opening (12) of the main body (10) and end areas with a minimum separation (Dmin) between the cover (20) and the opening
(12) del cuerpo principal (10). (12) of the main body (10).
14.- Extractor según una cualquiera de las reivindicaciones anteriores caracterizado por que el obturado central (40) tiene una forma cóncava, tal que la segunda distancia (d) presenta una zona central con una separación máxima entre el obturador central (40) y la abertura central (21) de la tapa (20) y unas zonas extremas con una separación mínima entre el obturador central (40) y la abertura central (21) de la tapa (20). 14. Extractor according to any one of the preceding claims, characterized in that the central seal (40) has a concave shape, such that the second distance (d) has a central area with a maximum separation between the central shutter (40) and the central opening (21) of the cover (20) and some areas ends with a minimum separation between the central shutter (40) and the central opening (21) of the cover (20).
PCT/ES2019/070793 2018-12-21 2019-11-20 Double-inlet air extractor WO2020128123A1 (en)

Priority Applications (3)

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EP19899590.4A EP3901467A4 (en) 2018-12-21 2019-11-20 Double-inlet air extractor
UAA202104241A UA127463C2 (en) 2018-12-21 2019-11-20 Double-inlet air extractor
AU2019410914A AU2019410914A1 (en) 2018-12-21 2019-11-20 Double-inlet air extractor

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ESP201831268 2018-12-21
ES201831268A ES2769475B2 (en) 2018-12-21 2018-12-21 DOUBLE AIR INLET EXTRACTOR

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CN114001038B (en) * 2021-12-22 2023-11-10 浙江上清风机有限公司 Fan with double air inlets

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EP1793126A2 (en) * 2005-11-30 2007-06-06 Greenwood Air Management Limited Vibration damped electric fan
EP2012412B1 (en) 2006-04-19 2015-08-19 Soler & Palau Ventilation Group, S.L. Damping casing for the motor of a lavatory and bath extractor
ES2385592A1 (en) * 2010-12-30 2012-07-27 Soler & Palau Research, S.L. Centrifugal exhaust fan for bathrooms
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EP3901467A4 (en) 2022-09-14
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UA127463C2 (en) 2023-08-30
ES2769475B2 (en) 2021-10-21

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