FR2844580A1 - STATIC VACUUM DEVICE FOR EXTRACTING SMOKE - Google Patents

Abstract

The present invention relates to a static vacuum device allowing or improving the extraction of ambient air (FG) from all types of rooms and combustible gases of all types of fireplaces, stoves, boilers and this in a non-limiting manner, including septic tanks.The static vacuum cleaner device comprises at least one active element (1) composed of external lateral bands (2), at least one "internal means" (3) capable of creating a Venturi effect in cooperation with the active element (1) and a connecting piece (4) adaptable to all types of bushels new or renovated. The design of the device of the present invention allows a significant increase in height or depression column compared to the systems of the prior art.

Description

STATIC VACUUM DEVICE FOR EXTRACTING SMOKE

Technical sector of the invention:

  The present invention relates to the technical sector of devices enabling or improving the extraction of ambient air from all types of rooms and combustible gases of all types of fireplaces, stoves, boilers and this in a non-limiting manner including septic tanks.

Prior art:

  A chimney extractor described in document FR No. 556262 is known, comprising strips of bent and stepped sheets so as to constitute a concentric first inner stage and a second external stage, associated with a nestable support on the free end portion of a conduit. chimney. According to one of the many versions described without preference, each floor itself comprises at least two crossed strips at 90.

  Also known chimney extractor described in FR No. 2231279 comprising stepped strips and intersecting on a nestable support on the end portion of a chimney. The bands define openings for the passage of smoke. In the crossing zone, the bands are flat. The support is equipped with elastically deformable fixing means.

  Static vacuums known from the prior art generally have parts involving complex manufacture and implement a complex and heavy structure. It is necessary to facilitate the installation of devices, their implementation and facilitate their handling. The manufacture of these systems must also be simplified while respecting the desire to limit the mechanical stresses (forces, vibrations, movement).

  Most known systems are especially inefficient in terms of "height of depression" that is to say in terms of power or suction capacity.

  It should be noted that in this area, every millimeter of depression gained represents an important progress. Table 1 below shows the control ratio of a gas boiler dated 10/09/02 showing a depression of only 0.06HPa, which corresponds to a depression representing only 1 0- of the normal atmospheric pressure. 1030 HPa. The optimization of millions of possible geometries is thus a parameter that can create very small but qualitatively surprising quantitative effects, which can make the difference between a good and a bad draw.

Table 1

10. 09. 02 6: 5 5

  LPG gas Measured according to the Federal Emission Control Regulations 02: 6.0 Vol% Co 3 ppm T-gas: 165.2 CC T-amb .: 23.5 cC T-heat. C La.mbda: 1.40 C02 10.1 Vol% CO-O% 4 ppm LOSS: 7, i0%

Rendeme. 93.0%

  The present invention relates to a device of the aforementioned type, the design of which was carried out in order to obtain a significant gain in height, or

  depression column compared to known systems, including apparently similar geometry.

  This new design is based on a much improved Venturi effect compared to the Venturi effect used in known systems of the prior art, and this, regardless of the direction of the wind.

  The present invention relates to a static vacuum device adaptable to any type of conduit or plug and allowing or improving the extraction of ambient air from all types of rooms and combustible gases of all types of fireplaces, stoves, boilers and this so non-limiting, including septic tanks.

  The design of said static vacuum cleaner device according to the invention has many advantages such as the non-return by the wind of the evacuated gases, the improvement of the draft of the chimney as well as the stabilization of the draft allowing a more regular combustion and thus a saving energy. The design of said device also prevents the entry of the birds inside the chimneys and provides a seal rainwater.

  Said static suction device comprises at least one "active element" (1), comprising external lateral bands (2), at least one "internal means" (3), able to create an improved Venturi effect in cooperation with said element active (1) and a connecting piece (4), adaptable to all types of bushel new or renovated (BO) and intended to connect the assembly formed by said active element (1) and said internal means (3) to said bushel ( BO), and to bring the gas to extract or "gaseous fluid" (FG) into the interior of said internal means (3), and from there to the outside (E) <T) via the active element (1) .

  Said device and its operating principle will be better understood on reading the description which follows.

  Detailed description of the invention

  The present invention relates to a static vacuum device mounting on all types of chimneys and to ventilate all types of premises including premises called "at risk".

  Said static vacuum cleaner device comprises at least one "active element" (1) composed of 2, 4, or 6 (or more) external lateral bands (2), at least one "internal means" (3) capable of creating an effect of Venturi type improved in cooperation with said outer side strips (2) and a connecting piece (4) or support allowing the adaptation of said static vacuum device on any type of plug (of square or round geometry, sheathed or not, this for non-limiting) and intended to bring the gas to extract or "gaseous fluid" (FG) into the interior of said internal means (3), and from there to the outside

(EX) T) via the active element (1).

  The present invention allows the extraction of ambient air (FG) contained inside any type of room (as non-limiting examples, we can mention a workshop, a bathroom, a cellar, a boat cabin. ..) as well as the smoke or flue gas from the chimney, stove, boiler, this in a non-limiting way ("internal gaseous fluid (FG)") including septic tanks and allowing their effective discharge to the outside even in adverse weather conditions.

  Said "active element" (1) of said device is composed of 2, 4, or 6 (or more) external lateral bands (2), preferably 4, intersecting in a preferred option at a vertex (5) and thereby creating a internal volume (VI) and able to arrange between them substantially vertical openings 01 adapted to put in communication the outside air (AE) and the gaseous fluid (FG) from within, from the interior of said internal means (3) ), to ensure the extraction of this fluid and its discharge into the outside air using a Venturi type effect.

  Said side strips (2) connect the top (5) of said device to the periphery of the connecting piece or support (4), the top (5) of the device

  static being formed by the flat central intersection zone of the outer lateral strips (2).

  Said "internal means" (3) capable of creating a Venturi-type effect in cooperation with the outer lateral strips (2) comprises at least one element (6, 7) partially open by at least one opening O 2 in its upper part and prolonging vertically connecting piece (4) so as to bring the gaseous fluid (FG) in a zone called intermediate zone (ZI) of the internal volume (VI) delimited by the outer lateral strips (2).

  Whatever the direction of the wind, a vacuum is created at at least one of said openings 02 of said internal means (3) cooperating with said openings 01 of the active element (1) allowing the extraction of the gaseous fluid (FG ) and its rejection in the outside air according to an improved Venturi effect.

  Other features and advantages of the present invention will be better understood on reading the description which follows, and with reference to the appended drawings in which:

  FIG. 1 very schematically represents the means and characteristics of the device according to the invention.

  Figure 2 very schematically shows in side view the device according to the invention in the case where the inner means is in the form of crossed inner strips.

  FIG. 3 very schematically represents a view from above of the active element (1) and the internal means (3) in the case where the internal means is in the form of crossed inner strips (6).

  FIG. 4 very schematically represents in perspective the device according to the invention in the case where the internal means is in the form of a turret (7) of square geometry, with O-shaped apertures 02 pointing downwards.

  FIG. 5 schematically shows a side view of the device in the case where the internal means is in the form of a square turret (7) combined with a fluidification means (8) (upper inverted cone).

  FIG. 6 very schematically represents the device according to the invention in the case of a combination of the aerodynamic profile means, here, an inverted cone (8) and of the internal means in the option in the form of internal crossed strips ( 6).

  FIG. 1 very schematically represents the means and characteristics of the device according to the invention. FIG. 1 shows that said static suction device comprises an "active element" (1) composed of external lateral strips (2), an "internal means" (3) capable of creating a Venturi type effect in cooperation with said strips external side in an intermediate zone (ZI) and a connecting piece (4) or support for adapting said static vacuum device on any type of plug (square or round geometry, sheathed or not, this non-limiting.

  It can be seen that the outer lateral strips (2) are capable of creating openings 01 capable of cooperating, in the intermediate zone (ZI), with the openings O2 of the internal means (3), forming an improved Venturi system between said openings O1 and 02.

  According to a preferred and nonlimiting embodiment, the active element (1) is composed of four external lateral bands (2) arranged at 90 ° to each other.

  Preferably, said means capable of creating a Venturi effect in cooperation with said outer lateral strips (2), is a cross-web system (6), preferably 4 strips, preferably crossing one another. other 900, able to create substantially vertical openings 02 at the intermediate zone (ZI) and positioned to cooperate with the outer sidebands

  (2) of the active element (1). Said crossed inner lateral strips (6) are fixed on the periphery of the connecting piece (4) so as to extend the latter to bring the gaseous fluid (FG) from the inside into the intermediate zone (ZI) of the volume interior VI delimited by the external lateral strips (2).

  According to another preferred embodiment represented by FIGS. 2 and 3, said inner crossed strips (6) constituting the internal means form a system angularly offset with respect to the system formed by the external lateral strips (2).

  The best mode is a system of 4 external lateral bands (2) crossed at 90 from each other, and a system of 4 internal crossed bands (6), this second internal system being angularly offset from 450 with respect to the first one. external system (Figure 3).

  According to another preferred embodiment represented by FIGS. 4 and 5, the means capable of creating a Venturi type effect in cooperation with the external lateral bands (2), is a turret of internal square geometry

  (7) constituting the internal means and vertically extending the connecting piece (4), open at the top and comprising at least one substantially vertical lateral opening 02 at the intermediate zone (ZI) of geometry such as a surface increase of the opening exists between the base of the opening and the top of the opening. This opening 02 may have, by way of example, not limiting, a shape of triangle or trapezoid or the like, "tip down".

  According to another embodiment, not limiting, said opening of said turret of square geometry (7) may be of triangular geometry pierced with holes and "tip down" respecting an open surface capable of ensuring

  the Venturi effect. This last option has the advantage of being effective against the birds.

  Preferably, the square turret (7) has a lateral opening 02 in "V" cut in the upper part of each face of the turret.

  According to a preferred embodiment shown in FIG. 4, the support or connecting piece (4) is provided at its lower end with a square piece

  (10) adapted to the plug and having a hole (1 1) of variable diameter at its center for guiding and positioning a casing relative to the device according to the invention.

  Said openings 02 of said internal means in the form of a square turret

  (7) are adapted to cooperate with the openings 01 formed by the outer lateral strips (2) at the intermediate zone (ZI).

  According to a preferred embodiment, said "internal means" (3) optionally comprises a second internal means for fluidizing the extraction of the gaseous fluid.

  Said fluidizing means (8) may be an aerodynamic profile adapted to reduce the pressure losses of the gaseous fluid and increase the vacuum column. This second internal means (8) cooperates with said first internal means (3) capable of creating a Venturi effect in cooperation with the active element (1).

  According to another preferred embodiment, said fluidizing means may be, without limitation, an inverted cone, an inverted pyramid with a square base or polygonal base, "downward tip", and the like.

  According to another preferred embodiment and according to FIG. 5, the fluidification means (8) is combined with the turret of square geometry (7). Said aerodynamic thinning means (8) is fixed at its base to the planar or "top" central intersection zone (5) of the outer lateral strips, and its pointed lower part then penetrates into the upper part of the first internal means. (In this case preferably, said "square turret" (7)) substantially up to the level of the intermediate zone (ZI).

  According to another preferred embodiment represented in FIG. 6, the fluidification means (8) is combined with the Venturi creation means in the form of internal cross lateral bands (6). Said aerodynamic profile fluidizing means (8) is fixed at its base to the plane central intersection zone of the inner sidebands, and its sharpest portion is substantially at the intermediate zone (ZI).

  Those skilled in the art will have understood that the invention aims to create a contacting of the gaseous fluid (FG) to extract, with the outside air, in the intermediate zone (ZI) by Venturi type cooperation between a) a system outer strips (2) having apertures (01) substantially vertical in the intermediate zone (ZI), b) at least one first internal extraction means (3) having apertures (02) substantially vertical in the intermediate zone (ZI). ), and, c) optionally a second internal extraction means or means of

  fluidification (8) cooperating with said first extraction means (3).

  By "substantially vertical" is meant throughout the present application including the claims, that the openings 01 and 02 are mainly open at the intermediate zone (ZI) (even if their end (s) in the vertical direction is / are above and / or below the intermediate zone (Z1)), and that the general direction of these openings is vertical. For example, if 01 globally forms an oval, its major axis is vertical. For example again, if 02 is a triangle, its tip is at the bottom and the corresponding base is at the top. In both cases, the upper and lower extremities may be outside the intermediate zone (ZI).

  According to another embodiment, the connecting piece (4) of the static vacuum device can be adjustable in height by using any adjustment means such as, for example, without limitation, telescopic systems with sleeves fitting one another. in the others, sliding systems, ring and sleeve systems, and all the like having the same function.

  According to another embodiment, the fluidification means (8) for the flow of the gaseous fluid may also be adjustable by any means making it possible to adjust its vertical positioning relative to the top (5), for example, without limitation, a screw located at its base, or any similar means having the same function, and being adjustable from the top (5) of the device.

  According to another embodiment, the means (3) capable of creating a Venturi effect in cooperation with the external lateral strips (2) could be replaced by a molded plastic bulb, the softening point of which would be greater than 300.degree. , having at least one system of substantially vertical lateral slots having the function of the openings O2.

  According to another embodiment, the connecting piece (4) or also called support may be of round or square geometry, or of square geometry in its upper part and round geometry in its lower part, this non-limiting.

  According to another embodiment, the outer lateral strips (2) in the case of a connecting piece (4) or square geometry support can form at their fastenings at the periphery of said connecting piece or support, fins (9) providing a vertical translational movement stop for their attachment and adaptation of the device in any type of bushel.

Geometric characteristics

  In general, the external lateral strips (2) forming said "active element" (1) are of the same width along their entire length.

  According to a preferred embodiment o the inner means comprises crossed strips (6), the inner crossbands (6) are of the same width as the outer sidebands (2).

  According to another preferred embodiment where the internal means is in the form of a square turret (7), the width of the sidebands (2) is of the order of at least 29% and of the order of 33% at the maximum width of the square turret (7).

  According to another preferred embodiment, the active element of the present invention has a height of 2/5 of the total height of the complete device. The portion between the lower end of the active element (1) and the upper part of the plug is 1/5 of the total height and the recessed portion of the device between the lower end and the upper end of the bushel represents 2/5 of the height.

  In a preferred manner, the aerodynamically shaped fluidization means (8) has a diameter at its base or a base diagonal in the case of a square base which represents 2/3 of the diameter of the active element (1). ), and its height is of the order of twice the radius of curvature of the outer lateral strips (2).

  Preferably, the square turret (7) and its extension by the square piece of support in the bushel must have a minimum height of three times the side of the bushel by decomposing as follows: 2/5 to the inside the plug, 1/5 from the stop of the plug at the bottom of the active element (1) and 2/5 for the height of the active element (1).

  In a preferred manner also the connecting piece (4) has a burnishing allowing its nesting and its maintenance in all types of bushels.

  In general, all the components of the static vacuum device of the present invention are spot welded and are made of stainless material and generally all types of materials compatible with the intended application, in particular stainless steel, plastics sufficient softening point and the like and assembled by all types of assembly means.

  The shape of the bearing parts of the system of the present invention is of less complex manufacturing compared to the systems known to date, and avoids the addition of a spacer by a spot welding process.

  Despite the simplification according to the invention of the structure of the static vacuum device, any separation of the parts due to external forces (wind, vibration ...) is avoided and even ensures a higher performance compared to the prior art.

  The invention also covers all the embodiments and all the applications which will be directly accessible to the person skilled in the art upon reading the present application, of his own knowledge.

  Tests: After tests, it turns out that the combination of "the active element" (1) formed of 4 external lateral strips (2) crossed at 90 and "internal means" in the form of a square turret (7) having triangular openings (02)

  gives results 13 to 18% higher than previous functional devices. The combination of the "active element" (1) consisting of four external lateral strips (2) crossed at 900 and the "internal means" in the form of crossed inner strips (6) gives results that are greater by 13 to 14% ( has substantially the same improvement with a round or square adaptation) thus reflecting a better depression column compared to known systems of the prior art.

  Also after testing, it turns out that the combination of two of said internal means, including said airfoil means, preferably a cone, allows a surprising improvement of the vacuum column by more than 25% compared to the known systems of the prior art.

Claims (34)

  1 Static vacuum device that can be mounted on all types of ducts or bushings and that can be used to ventilate all types of premises, including so-called "at risk" premises, allowing or improving the extraction of ambient air from all types of rooms and gases fuels of all types of chimneys, stoves, boilers ("gaseous fluid from within") including septic tanks, characterized in that it comprises at least one "active element" (1) composed of 2, 4, or 6 external lateral strips (2), at least one "internal means" (3) capable of creating a Venturi type effect in cooperation with said external lateral strips and a connecting piece (4) or support allowing the adaptation of said device static vacuum cleaner on any type of bushel or duct, and intended to bring the gas to extract or gaseous fluid   (FG) within said inner means (3), and thence out (EXT) via the active element (1).   2 static suction device according to claim 1 characterized in that   that said "active element" (1) of said device is composed of 2, 4, or 6 external lateral bands (2) intersect in a "vertex" 5 and thus create an interior volume (VI) and are able to arrange between them substantially vertical openings 01 adapted to place the external air (AE) and said gaseous fluid (FG) from the inside, coming from the interior of said internal means (3), in order to ensure the extraction of this fluid and its release into the outside air using a Venturi effect.   Static vacuum device according to any one of   Claims 1 and 2 characterized in that said "active element" (1) of said device is composed of 4 external lateral strips (2) arranged at 90 ° to each other.   4 static vacuum device according to any one of   Claims 1 to 3, characterized in that said lateral strips (2) connect   the top (5) of said device at the periphery of the connecting piece or support (4), the top (5) of the static device being formed by the flat central intersection zone of the outer lateral strips (2).   Static vacuum device according to any one of   Claims 1 to 4 characterized in that said "inner means" (3) capable of creating a Venturi effect in cooperation with the outer sidebands (2) comprises at least one partially open element (6, 7) by at least one opening 02 and vertically extending the connecting piece   (4) so as to bring the gaseous fluid into a zone called intermediate zone ZI of the internal volume VI delimited by the outer lateral bands.   6 static vacuum device according to any one of   Claims 1 to 5 characterized in that whatever the direction of the wind, a depression is created at at least one of said openings 02 of said internal means (3) cooperating with said openings 01 of the active element (1) allowing the extraction of the gaseous fluid and its discharge into the outside air according to a Venturi type effect.   7 static vacuum device according to any one of   Claims 1 to 6 characterized in that said outer lateral strips (2) are able to create openings 01 capable of cooperating, in the intermediate zone (ZI), with the openings O2 of the internal means (3), forming a Venturi system improved between said openings 01 and 02.   8 static vacuum device according to any one of   Claims 1 to 7 characterized in that said means (3) adapted to create a Venturi effect in cooperation with said outer sidebands   (2), is a cross-web system (6), preferably 4 strips, preferably crossing one another at 90, able to create substantially vertical openings 02 at the intermediate zone (Z7 ) and positioned to cooperate with the outer sidebands (2) of the active element (1).   9 static suction device according to claim 8 characterized in that   said crossed inner lateral strips (6) are fixed on the connecting piece (4) so as to extend the latter in order to bring the gaseous fluid from the inside into the intermediate zone of the internal volume V delimited by the external lateral bands; (2).   1 0 static suction device according to any one of claims 8 to 9 characterized in that said inner crossbands (6) constituting the inner means form a system angularly offset from the system formed by the outer side strips (2).   11 static suction device according to any one of claims 8 to 1 0 characterized in that it is formed by a system of 4 external lateral bands crossed (2) to 900 from one another, and a system of 4 bands cross interior (6), the second internal system being angularly offset from 450 with respect to the first external system.   1 2 static suction device according to any one of claims 1 to 7 characterized in that the means (3) adapted to create a Venturi type effect in cooperation with the outer side strips (2), is a turret of internal square geometry (7) constituting the internal means and vertically extending the connecting piece (4), open at the top and comprising at least one substantially vertical lateral opening 02 at the intermediate zone (ZI) of geometry such that a surface increase of the opening exists between the base of the opening and the top of the opening.   1 3 static vacuum device according to claim 12 characterized in that said openings 02 have a triangle-shaped or trapezoid "tip down".   1 4 static vacuum device according to any one of claims 12 and 13 characterized in that the means for creating opening of said turret geometry (square (7) may be geometry 1 7   triangular pierced holes and "tip down" respecting an open surfaoe able to ensure the effect of Venturi.   Static vacuum device according to any one of claims 12 to 14 characterized in that said openings 02 of said internal means in the form of square turret (7) are adapted to cooperate with the openings 01 formed by the external lateral strips (2) at the of the intermediate zone (ZI).   1 6 static vacuum cleaner device according to any one of claims 12 to 15 characterized in that the outer side strips in the case of a connecting piece or support of square geometry can form at their fasteners at the periphery of said piece fitting or support, fins (9) providing a vertical translation movement stop, allowing their attachment and adaptation of the device in any type of plug.   17 static vacuum device according to any one of   claims 1 to 16 characterized in that the support or connecting piece (4) is provided at its lower end with a square piece (10) adapted to the plug and having a hole (11) of variable diameter at its center for guiding and the positioning of a casing with respect to the device according to the invention.   18 static suction device according to any one of claims 1 to 17 characterized in that said "internal means" (3) optionally comprises a second internal means for fluidizing the extraction of the gaseous fluid.   19 static suction device according to claim 18 characterized in that said fluidizing means is an aerodynamic profile adapted to reduce the pressure drop of the gaseous fluid and increase the vacuum column.   Static vacuum device according to any one of claims 18 to 19 characterized in that said second internal means   cooperates with said first internal means capable of creating a Venturi effect in cooperation with the active element.   21 static vacuum device according to any one of claims 18 to 20 characterized in that said fluidizing means (8) is an inverted cone, an inverted pyramid with a square base or polygonal base and "tip down".   22 static suction device according to any one of claims 18 to 20 characterized in that the fluidizing means is combined with the turret (7) of square geometry.   Static vacuum device according to any one of claims 18 to 21, characterized in that said airfoil fluidization means is fixed at its base to the plane central intersection zone or "top" of the outer lateral strips, and its portion the sharpest then enters the upper part of the first internal means (said "square turret") substantially to the level of the intermediate zone (ZI).   24 static suction device according to any one of claims 18 to 21 characterized in that the fluidizing means (8) is combined with the means for creating a Venturi type effect in the form of inner crossbars (6).   Static vacuum device according to claim 24, characterized in that said airfoil fluidization means is fixed at its base to the plane central intersection zone of the inner lateral bands, and its pointed lower part is substantially at the intermediate zone. (ZI).   26 static suction device according to any one of claims 1 to 25 characterized in that the connecting piece of the static vacuum device can be adjustable in height by using any adjustment means.   27 static suction device according to any one of claims 1 to 26 characterized in that said adjustment systems may be   telescopic sleeve systems interlocking with one of the sliding systems, ring systems   and all analogues having the same function.   28 static suction device according to one (claims 1 to 27 characterized in that the means c the flow of the gaseous fluid can also be adjusted to adjust its vertical positioning by ra (5).   29 static suction device according to one c claims 1 to 28 said adjustment means can at its base, or any similar means having the n   can be adjusted from the top of the device.   Static vacuum device according to one of claims 1 to 7, 17 to 21 and 26 to 29, characterized in that it can create a Venturi effect in cooperation with the   can be replaced by a molded bulb whose softening point would be greater than 300 minus a system of substantially the function of the openings 02.   31 static vacuum cleaner device according to one c claims 1 to 30 characterized in that the piece of r called support may be of geometry round or square geometry square in its upper part and geom lower part.   32 static suction device according to any one of 31 characterized in that the external side strips said "active element" (1) are of the same width over the entire 3 static vacuum device according to any one of 32 characterized in what when the internal means crossed strips (6), the inner crossed strips (i   width than the outer side strips (2).   in the others, and sleeves uelconque the e fluidification of it by any means pport the vertexque of all be a screw located eeme function, and uelconque what the means side bands natique plastic, 'C, possessing icales having any accord or else -e, or else itrie round in his   Claims 1 3ures (2) forming Gold length.   claims 1 e includes 3) are likewise   34 static suction device according to any one of claims 1 to 33 characterized in that when the inner means is in the form of a square turret (7), the Irgeur sidebands (2) is of the order of 29% at least 33% of the width of the square turret (7).   Static vacuum device according to any one of claims 1 to 34 characterized in that the active element of the present invention has a height of 2/5 of the total height of the complete device.   36 static suction device according to any one of claims 1 to 35 characterized in that the portion between the lower end of the active element (1) and the upper part of the bushel is 1/5 of the total height   37 static suction device according to any one of claims 1 to 36 characterized in that the recessed portion of the device between the lower end and the upper end of the plug is 2/5 of the height.   38 static suction device according to any one of claims 1 to 37 characterized in that the fluidization means (8) of aerodynamic shape has a diameter at its base or a diagonal base in the case of a square base which represents 2/3 of the diameter of the active element (1), and in that its height is of the order of twice the radius of curvature of the outer lateral bands (2).   39 static suction device according to any one of claims 1 to 38 characterized in that the square turret (7) and its extension by the square piece of support in the bushel must have a minimum height of three times the side of the bushel decomposing in the following manner: 2/5 inside the plug, 1/5 since the stop of the plug at the bottom of the active element (1) and 2/5 for the height of the active element ( 1).   Static vacuum device according to any one of claims 1 to 39 characterized in that the connecting piece (4) has a rollerball allowing its interlocking and its maintenance in all types of bushels.   41 static suction device according to any one of claims 1 to 40 characterized in that all the components of the static vacuum device of the present invention are assembled by spot welding.   42 Static vacuum device according to any one of   Claims 1 to 41, characterized in that all the elements making up the static vacuuming device of the present invention are manufactured in all types of materials compatible with the intended application, in particular stainless steel, plastics with sufficient softening point.