• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    FAN / DIFFUSER WITH CIRCULAR INTAKE AND NON-ROTATIONAL SYMMETRY OUTPUT The present invention relates to a diffuser (3) for a fan (2) in the form of a radial or diagonal axial construction, with an inlet opening (10) and a outlet opening (20) for a gaseous product that flows from the inlet opening (10) in an axially directed main flow direction (S) of an internal diffuser compartment (I) closed by an external housing (30), up to the outlet opening (20), the cross section (21) of the outlet opening (20) being larger than the cross section (11) of the inlet opening (10) and the cross section of the internal diffuser compartment ( I), starting from the cut (11) of the inlet opening increases to the cut (21) of the outlet opening (20), the outer housing (30) forming an external diffuser component (AD) that limits the diffuser compartment externally (I), the outer housing (30) forming an external diffuser component o (AD) that limits the internal diffuser compartment (I) on the outside. In order to achieve, in a less complex constructive way, improvements in operational behavior regarding the degree of action and noise, it is proposed that the cross section of the external diffuser component (AD) along the main flow direction (...).
    公开号:BR112013013910B1
    申请号:R112013013910-2
    申请日:2011-12-16
    公开日:2020-07-28
    发明作者:Markus Engert；Erik Reichert；Oliver Haaf；Christian Pfaff；Marc Schneider；Jurgen Schöne；Katrin Bohl；Sven Beck；Dieter Best；Tobias Ehmann；Alexander Frank；Erhard Gruber；Matthias Maschke；Thomas Sauder
    申请人:Ebm-Papst Mulfingen Gmbh & Co. Kg；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a diffuser for a fan, in the form of axial, radial or diagonal construction, with an inlet opening and an outlet opening for the gaseous medium that flows from the inlet opening, in a axial main flow direction within an internal diffuser compartment, surrounded by an external housing, up to the outlet opening, the cross section of the outlet opening being greater than the cross section of the inlet opening and the cross section of the compartment inside the diffuser - starting from the cross section of the inlet opening - progressively increases in the direction of the cross section of the outlet opening, with the outer housing forming an external part of the diffuser that, externally, limits the internal compartment of the diffuser. The present invention also relates to an external part of the diffuser or an internal part of the diffuser, as well as a fan and a fan arrangement comprising such a diffuser.
    [0002] The principle of a diffuser and also its use in sequential coupling to a turbo motor has been known for several tens of years. Diffusers are technically protected to transform kinetic energy into pressure energy. For that, the flow will have to be delayed. This is usually achieved by a continuous or irregular enlargement of the flow cross section, which can be accomplished in several ways. In the construction of fans, diffusers can be used to slow down gas flows and to increase gas pressure. In this case, in principle, a diffuser presents the opposite case of a nozzle, the cross section of the outlet opening - opposite to the nozzle - is greater than the cross section of the inlet opening and the cross section of the internal diffuser compartment, starting from the cross section of the inlet opening, they increase to the cross section of the outlet opening. This is true for gas flows with subsonic velocity.
    [0003] The advantage of using a diffuser in sequential connection with an axial, diagonal or radial fan, is based on the fact that normally, in all forms of fan construction, the losses that arise due to the dissipation of the volumetric current in output, are dominant when compared to other sources of losses. A portion of the flow energy of the outgoing jet can be reconverted by the diffuser under static pressure, and the increase in static pressure produces an increase in the degree of action. In addition, speed can be reduced to the same air potential, which means noise reduction.
    [0004] A diffuser of the species initially cited has become known, for example, from the European patent EP 0 581 978 A1. This publication comprises a multi-zone diffuser for a turbocharger to be axially traversed, and at the angle of the diffuser inlet bending - both on a hub and on a turbocharger cylinder - are attached exclusively to standardize a pressure profile total, being stuck above the height of the channel, at the exit of the last row of shovels. In this case, within a delay zone of the diffuser, means are provided for removing the torsion from the flow with torsion, in the form of flow ribs and flow-conducting rings subdivide the diffuser into several channels. In order that in the predetermined conditions of the diffuser area - with what is understood the relationship of the flow cross section at the outlet to the diffuser intake - with the smallest possible diameter of the first diffuser zone, as well as with pressure recovery as possible physics and torsion-free flow, in order to keep the overall length of the diffuser to a minimum, special differentiated configurations of the first and second diffuser zones are required for the diffuser, which nevertheless require a relatively high effort from the technical point of view of production.
    [0005] In the version described as being preferred in the European patent EP 0 581 978 A1, the known diffuser is located in an exhaust gas housing of a gas turbine that is designed in such a way that it does not come into contact with the current exhaust gas. The effective conduction of the current is carried out by the diffuser, which, in its first zone, is formed as an insertion part for the exhaust gas housing. For this purpose, an external limiting wall and an internal diffuser limiting wall are maintained by means of flow ribs. The external limiting wall, which externally limits the cross section of the internal diffuser compartment, forms an external housing of the diffuser, while the internal limiting wall, which internally limits the cross section of the internal diffuser compartment, forms an internal housing . The diffuser can thus be understood as consisting of an external part of the diffuser, which limits the flow compartment externally, and an internal part of the diffuser, which limits the internal flow compartment.
    [0006] The purpose of the present invention is to form a diffuser, an external part of the diffuser and / or an internal part of the diffuser for a diffuser and a valve arrangement of known species, which in a constructive manner with reduced effort make it possible to achieve improvements in the operational behavior of a diagonal or radial axial fan, relative to the degree of action and noise.
    [0007] According to the invention, this task will be solved by the fact that the cross section of the outer part of the diffuser converges along the main flow direction of a circular cross section in the inlet opening to a non circular cross section. at the exit opening. Alternatively, the underlying task of the invention in a diffuser of this kind, in which additionally, in a known manner, in a concentric sense relative to the external part of the diffuser, an internal part of the diffuser is provided that has a housing, limiting, as housing internal, the internal compartment of the diffuser in the internal part, this task being solved by the fact that the internal part of the diffuser, in at least one cut perpendicular to the direction of the main flow, presents a non-circular cross section around the axis of fan rotation.
    [0008] In an important way for the invention, therefore, on the one hand, an external part of the diffuser may be provided for a fan of radial or diagonal axial construction that converges as far as possible along the main flow direction of a section circular cross section for a non-circular cross section, with an internal part of the diffuser, of random configuration. On the other hand, there may also be an internal part of the diffuser in the diffuser which, in a smaller cut, has a non-circular cross section around the axis of rotation of the fan, with an external part of the diffuser, of random configuration. In the case of the non-circular cross section, it may be a section in particular that, in its basic formation, is polygonal, in particular square. In this case, the invention comprises the corresponding conformation of the outer part of the diffuser and / or the inner part of the diffuser.
    [0009] As with known units, diffusers connected in sequence to a fan, a diffuser according to the present invention produces a conversion from dynamic pressure to static pressure. In this sense, the speed of the fluid will be reduced and standardized. Whereas a conventional diffuser, conformed in the direction of the fan's rotation axis, totally with rotational symmetry, transforms the velocity mainly in axial direction - therefore, the axial component of the velocity vector - promoting its transformation into static pressure and in the case of pre-established torsion constancy, the circumferential component of the velocity is only reduced to the extent that it increases the diameter, whereas a diffuser according to the present invention additionally inhibits a part of the circumferential velocity of the gas at static pressure, already that non-rotational symmetric geometry inhibits movement in a circumferential direction. In this way, the degree of diffusion efficiency is advantageously increased.
    [00010] The diffuser according to the invention, which, due to the shape of its diffuser outer section and / or the diffuser inner section, presents a flow cross-section not completely symmetrical in a rotational direction, has yet another advantage. The maximum built-in space that is available for a diffuser, in the final devices is usually square in shape, with a maximum width, a maximum height and a maximum length determined by the product. In these conditions, in the corners that are present, for example, in the case of a polygonal cross section, in particular square, in a diffuser according to the invention - in comparison with a diffuser with fully rotational symmetry - a larger face can normally be used towards the fan's rotation axis and, therefore, allowing a greater conversion of the axial speed. This also increases the degree of action of the diffuser.
    [00011] Also, in a diffuser according to the invention, without exceeding the limits of the built area already defined, the cross section of the outlet opening, based on a possible use of the corners, can achieve an equivalent radius greater than than that of a diffuser totally rotationally symmetrical, a higher pressure conversion can be achieved in this way from the circumferential speed. In this case, it must be understood under the expression of equivalent radius, the radius of a circle that has the same spatial content as the diffusing face of non-circular shape. The bivalent radius is also referred to as the hydraulic diameter.
    [00012] A diffuser according to the invention can advantageously be used in arrangement with a radial or diagonal axial fan, operated through an electric motor with external armature, without in this case having to provide a sequential driving wheel.
    [00013] The global constitution of an arrangement of fans with fan and a diffuser according to the invention can be realized in a single section or in two sections. The expression constitution in a section means that a fixed component of the fan, in particular a wall ring and the entire diffuser - that is, the internal and / or external part of the diffuser - are configured as a single constructed component. In this way, the ring on the fan wall becomes a component of the diffuser.
    [00014] With the expression of configuration of two sections, it is understood that the diffuser according to the invention is configured as a construction component separate from fixed construction components of the fan - thus constituting a separate construction component, being that can be attached or is secured by means of fasteners, such as screws, rivets, clamps etc. or by friction connections of form and / or cohesion as by a bayonet type closure, by a clip union by welding etc. fixed parts of the fan, in particular the wall ring or a protective grid. In this case, advantageously, it is also possible to form such a diffuser according to the present invention that it is suitable for later assembly on a fan already installed.
    [00015] In addition, in a configuration of two sections of this type of an arrangement, it is also possible that the diffuser itself can be built in several sections, with which it must be understood that it consists of several individual diffuser components, which, through of fixing means or connections, as mentioned above, can be or are already interconnected. The diffuser components that can be assembled on the spot in this way can therefore be advantageously logistically shaped in such a way that, for example, they can be stacked, thereby reducing the transport volume. In this way, it becomes possible to modify the diffuser geometry, in particular the diffuser extension, by not using or replacing different components of the diffuser, as needed.
    [00016] Other advantageous versions of the invention are contained in the embodiments and the subsequent description. Based on several examples of execution presented in the attached figures of the drawing, the invention will be explained in more detail. The figures show:
    [00017] Fig. 1 - longitudinal section of a principle presentation of a fan arrangement that consists of a fan and a diffuser, in which a diffuser according to the invention is being used or may be used,
    [00018] Fig. 2 - perspective view of a gas outlet side of a preferred version of a diffuser according to the invention,
    [00019] Fig. 3 -a perspective view to a gas inlet side of the preferred version, shown in Fig. 2, relating to a diffuser according to the invention,
    [00020] Fig. 4 - an arrangement of valves according to the invention in perspective view,
    [00021] Fig. 5 - perspective view similar to Fig. 2
    [00022] Fig. 6 - perspective view similar to Fig. 3,
    [00023] Fig. 7 - graphical representation of a preferred dependence of a container on the side of the diffuser on the side of the gas outlet towards the cross face of the diffuser on the side of the gas in a relation of the length of the diffuser to a outer diameter of the diffuser inlet inlet,
    [00024] Fig. 8 - graphical representation of a preferred dependence of a ratio of the hydraulic diameter to the length of the diffuser, relative to a relationship of the length of the diffuser to an outside diameter of the inlet opening of the diffuser,
    [00025] Fig. 9 - Perspective view of a preferred version of an external part of the diffuser or internal according to the invention,
    [00026] Fig. 1Oa / Fig. 10b and Fig. 11a / Fig. 11 b - an axial and radial half-cut for two preferred versions of an external part of the diffuser according to the invention, in a valve arrangement according to the invention,
    [00027] Fig. 12a / 12b to Fig. 15a / 15b - an axial and radial semi-cut of four preferred embodiments of an internal part of the diffuser according to the invention, in a valve arrangement according to the invention,
    [00028] Fig. 16a / 16b and Fig. 17a / 17b -in an axial and radial half-cut of two preferred versions of combinations of external and internal parts of the diffuser according to the invention, in a valve arrangement according to the invention, being that the outer part of the diffuser is reduced,
    [00029] Figs. 18a / 18b and Fig. 19a / 19b -a half axial and radial cut of two preferred versions of combinations of external and internal parts of the diffuser according to the invention, in a valve arrangement according to the invention,
    [00030] Figs. 20a / 20b and Figs. 21a / 21b -a half axial and radial cut by two preferred versions of combinations of external and internal parts of the diffuser according to the invention, in a valve arrangement according to the invention, the internal components of the diffuser being reduced,
    [00031] Fig. 22a - an axial semi-cut by a valve arrangement according to the invention, with a centrifugal fan,
    [00032] Fig. 22b -a half axial section of a valve arrangement according to the invention with a diagonal fan,
    [00033] Figs. 23a / 23b -a half axial and radial cut by a valve arrangement according to the invention, according to Figs. 12a / 12b, with an internal part of the diffuser, in particular the face of the outlet.
    [00034] In relation to the subsequent description, it will be expressly emphasized that the invention is not restricted to the execution examples and, therefore, it is also not restricted to all or several characteristics of combinations of characteristics described, but, on the contrary, each characteristic example of the execution example may also have an inventive meaning when it is separated from all other related characteristics that have been described in this sense.
    [00035] In the figures of the drawing, equal components also always have the same reference number, so that they will normally be described only once.
    [00036] As initially shown in Fig. 1, a fan arrangement 1 according to the invention comprises a fan 2, as shown for example in an axial construction, and a diffuser 3, which - but which is not clearly seen in the schematic presentation - it is conformed according to the invention, that is, it can be at least so conformed, as shown for a diffuser 3 according to the invention, for example, in Figs . 2 and 3 and for the arrangement 1 according to the invention, shown in detail in Fig. 4. The fan 2 which alternatively can also be a diagonal radial construction unit, is driven by a motor 4, and through a wall ring 5 is attached to a base 6, like a wall.
    [00037] Figs. 2 and 3 and also Figs. 5 and 6 show that a diffuser 3 according to the invention has an inlet opening 10 and an outlet opening 20 for the gaseous medium that crosses from the inlet opening 10 in a main flow direction S -which extends, therefore , essentially parallel to the longitudinal axis X-X of the diffuser 3, crossing an internal diffuser compartment 1, surrounded by the outer housing 30, until an outlet opening 20. The inlet opening 10 shown in Fig. 1 has a contour circular external, the reference mark D1 designating the diameter of the fan 2. The diffuser 3 has a length L.
    [00038] The cross-section 21 (shaded cross-face A2 in Fig. 5) of the outlet opening 20 is larger than the cross-section 11 (shaded cross-face A1 in Fig. 6) of the inlet opening 10, while the the cross section of the internal compartment of the diffuser I increases from the cross section 11 of the inlet opening 10 to the cross section 21 of the outlet opening 20, in particular continuously. The outer housing 30 forms an outer part of the diffuser AD that externally limits the inner compartment of diffuser I.
    [00039] According to the invention, it is provided that the cross section of the external part of the diffuser AD along the main flow direction S converges from a circular cross section 31 in the inlet opening 10 to a non-circular cross section 32 in the opening outlet 20. This last cross section is essential - as shown in Fig. 2 - preferably square.
    [00040] Concentrically towards the external part of the AD diffuser, an internal part of the ID diffuser is provided that limits the internal compartment of the diffuser I through the internal housing 40 of which it consists. According to the invention, it is provided that the internal part of the ID diffuser, in at least one section perpendicular to the main flow direction S, presents a non-circular cross section 42 around the common longitudinal axis X-X of the internal part of the ID diffuser and the outside of the AD diffuser. A cross-section 42 -not considered rounded sections in the corners to avoid ruptures in the flow -not essentially circular, that is, in its basic shape, in a square shape, is provided, for example, in the outlet opening 20. The cross-section 41 the internal part of the ID diffuser in the inlet opening 10 is instead of circular conformation.
    [00041] As a particularly advantageous conformation in a diffuser 3 with an internal part of the ID diffuser concentrically arranged in relation to the external part of the AD diffuser, which has approximately the same length L (less than a 10% difference relative to the length of the larger part), it should be considered a formation of the space path according to Formula (1).
    the value A2 / A1 can be diffuse + in terms of 20%. Formula (1) is shown in Fig. 7, as -as already explained above -A1 is the face crossed by the flow at the entrance of the diffuser 10, A2, the face crossed by the flow at the exit of the diffuser 20, Leo length diffuser and D1 is the fan diameter.
    [00042] It was found that a hydraulic Dhydr diameter (double value of the equivalent radius) referring to the length - in particular independent of an internal part of the ID diffuser - can be considered optimized when it is dimensioned according to Formula (2):
    , as shown in Fig. 8. Here, the permissible oscillation range is + 20% of the calculated Dhydr / L value.
    [00043] Diffusion walls constituting the internal housing 40, the external housing 30 and / or - in the case of a construction of several sections - parts of these units, may consist of plastic and are preferably produced by a basic molding process or normal molding, such as jet molding, extrusion, rotational transformation, foam molding, deep vacuum inlay, blow molding or similar procedures.
    [00044] In a hybrid construction form, mechanically and intensely requested areas of the diffuser can be reinforced by at least a part of metal applied during a primary or later applied molding process.
    [00045] Also, in the form of construction with stringers, a support structure of the diffuser 3 can be a structure that is covered by a thin material, in particular plastic or plate.
    [00046] In an advantageous embodiment of a diffuser 3 of several sections, thin plates (thickness less than 1 mm, preferably less than 0.5 mm), originally flat plates, in particular stamped plates, can be folded and interconnected in the Assembly. Additional attachments can be used to reinforce these constructions.
    [00047] Fig. 9 shows a version of a diffuser 3, according to the invention, which can also be used with the external part of the AD diffuser or with the internal part of the ID diffuser, that is, as an external housing 30 or can be used as internal housing 40. This version is particularly suitable as a construction solution for wall rings 5 with a D1 diameter greater than 500 mm. The wall of this version is produced from a laminate, that is, a component of canvas P preferably consisting of plastic and which, advantageously, can be folded for transport. Logistical work can thus be reduced. For the production of the diffuser 3, that is, the diffuser part AD, ID, for example, a flat cutout can be welded, being joined with the support and molding rings 9a that surround the inlet opening 10 and the opening outlet 20. The support and shaping rings 9a may, in this case, be interconnected by means of support rods 9b, with which they will form a structure with these particular units, as explained above. The support and shaping ring 9a at the inlet opening 10, in the case shown, has a circular shape, the support and shaping ring 9a at the outlet opening 20 is approximately square, but with rounded corners. Therefore, not only canvas P can be supported by the support and modeling rings 9a, but rings 9a can advantageously serve to accommodate a protective grid, in particular in outlet opening 20 in order to screw a wall ring into the opening inlet 10. By the support rods 9b, which - like the support and modeling rings 9a - can be produced, according to the necessary resistance, of steel or plastic, it can, possibly, using a fixing device additional, be fixed on the tarpaulin P. As the canvas P is a flexible construction component, due to an altered cutout of the canvas P (and an adaptation of support beams 9b) the length L of the diffuser 3 can be changed with reduced effort . It is also possible in a simple way to model the P planes with a su-perficial geometry (the so-called Riblets - small ribs) that produces, in turbulent surfaces crossed by the flow, a reduction of the frictional resistance. In this sense, microscopically small ribs with a reciprocating distance of less than 100 pm can be applied to the planes, which inhibit transversal movements of the flow and, thus, reduce the friction on the wall by up to about 8%.
    [00048] The diffuser 3 according to the invention can also be made with a contact protection that is shaped or solid with internal housing 40 and / or with external housing 30, or is formed as a separate construction component. If the diffuser 3 is conformed to a protection against contact, a protective fan grid that is generally used in fans can be abandoned or essentially simplified in its construction. As the protection against contact with the movable wheel - Fig. 4 shows a fan blade 7 (with the hub 8) - according to the invention, it normally has a greater distance from the movable wheel than a protective grid used from the conventional type. The distance between the rods should be chosen greater, which can be advantageous from a technical-flow and acoustic point of view. The contact protection can be designed in a very simple way, for example, in the form of rectangular stringers.
    [00049] Although a preferred use of the invention lies in employing a diffuser 3, conformed according to the invention, in particular, with a low-pressure or low-diagonal pressure fan, operated by an external induced electric motor, that can be used without a sequential driving wheel, a diffuser 3 according to the invention can also be formed with a sequential driving wheel. A sequential conductive wheel of this kind consists of fixed conductive elements and deflects circumferential and / or radial components from the flow velocity in the diffuser 3 to the axial direction X-X. In this way, the sequential conductive wheel increases the conversion of the static pressure of the diffuser 3. Similar to what has been described for contact protection, the sequential conductive wheel can be formed integrally - the sequential conductive wheel and the diffuser constitute a construction unit -or can be made as a separate component.
    [00050] Diffuser 3 can also be shaped in such a way that in addition to its specific function, it simultaneously performs both the sequential driving wheel function and the contact protection function. Here too, a one-piece conformation with the external / internal part of the 30/40 diffuser or a conformation as a separate component is possible, which can be mounted on the diffuser 3.
    [00051] Diffuser 3 may also be equipped with an acoustic insulation, in particular by acoustic insulation materials. For this purpose, for example, an insulating material, on the inner side of the diffuser 3, facing the main flow direction S, in the inner compartment of the diffuser I, can be positioned in such a way that the free surface of the sound attenuating material forms the wall fluidically effective diffuser, this wall of the internal housing 40 and / or the external housing 30. In addition, or exclusively, the acoustic insulation material can also be applied on the external face of the diffuser - removed from the main flow S - that is, on the outside of the diffuser component 30. To reduce the sound radiation from medium to low frequency, the diffuser can be configured with a system for active sound isolation - "Active Noise Control" (active control against noise ).
    [00052] Fig. 10a / Fig. 10b to Fig. 23a / Fig. 23b show preferred versions, in axial and radial half-cuts, of external parts of the AD diffuser according to the invention and / or internal parts of the ID diffuser and their combinations in fan groups 1. In addition to Figs. 22a and 22b are presented for three positions drawn (percentage 0 of length L, 50% length L and 100% length L) with the contours of the parts of the diffuser AD, ID in radial half-cut being represented.
    [00053] As the different versions show, regarding the lengths of the diffuser parts AD, ID, three variants can be differentiated: A) both AD, ID parts have the same length L (Fig. 18a, Fig. 19a, Fig. 22b) or there is only one part AD, ID, with a determined length I (Fig. 10a to Fig. 15a, Fig. 23a); B) the length (in this case referred to as the Lext reference number) on the outside of the AD diffuser is less than the length (in this case referred to as the Lint reference number) of the inside of the ID diffuser (Fig. 16a, Fig. 17a ); C) the length (in this case also referred to as the Lext reference number) of the outer part of the AD diffuser is greater than the length (in this case, also referred to as the Lint reference) of the inner part of the ID diffuser (Fig. 20a, Fig 21a, Fig. 22a).
    [00054] As shown in Fig. 22a, variant B) can preferably be used in a centrifugal fan and, as shown in Fig. 22b variant A) can be preferably used in a diagonal fan.
    [00055] In Fig. 10a / Fig. 10b an external part of the diffuser AD is shown with the following formation of its contour: with 0% of the length L -circular round (rotational symmetry), with 50% of the length L -essentially square (that is, with rounded corners, not being of rotational symmetry) with 100% also essentially square (that is, with edges stronger than 50%, of non-rotational symmetry). Fig. 12a / Fig. 12b shows an internal part of the ID diffuser of identical construction.
    [00056] In Fig.11a / Fig. 11b, an external part of the diffuser AD is presented with the following configuration of its contour: with 0 percent of the length L -circular round (rotational symmetry), with 50 percent of the length L -essentially square (that is, with rounded corners, of non-rotational symmetry), with 100 percent, circular and round (rotational symmetry, Fig. 14a / Fig. 14b represent an internal part of the ID diffuser of identical conformation.
    [00057] In Fig. 13a / Fig. 13b an internal part of the ID diffuser is presented with the following formation of its contour: with 0% of the length L - square (not of rotational symmetry), with 50% of the length L - essentially square (that is, with rounded corners of symmetry) non-rotational) with 100% circular and round (rotational symmetry).
    [00058] In Fig. 15a / Fig. 15b, an internal part of the ID diffuser is presented with the following conformation of its contour: with 0% of the L-square length (of non-rotational symmetry), with 50% of the L-length essentially square (that is, with rounded corners of non-symmetry) rotational), with 100% square (non-rotational symmetry).
    [00059] In Figs. 16a / 16b a valve arrangement 1 according to the invention is shown in which an external part of the diffuser AD is present with a conformation according to Fig. 10a / Fig. 10b - however without rounded corners with 100% Lext length - which is combined with an internal part of the ID diffuser with a conformation according to Figs. 15a / 15b. The Lext length on the outside of the AD diffuser is less than the Lint length on the inside of the ID diffuser.
    [00060] Figs. 17a / 17b show a fan arrangement 1 according to the invention, in which an external part of the AD diffuser with a conformation according to Fig. 11a / Fig. 11b, in which it is combined with an internal part of the ID diffuser with the conformation according to Fig. 14a / Fig. 14b -although with rounded corners with 50% of the Lint length, being thus combined. The Lext length of the outside of the AD diffuser here is also less than the Lint length of the inside of the ID diffuser.
    [00061] Figs. 18a / 18b show a valve arrangement 1 according to the invention, in which an external part of the diffuser AD is present with a conformation according to Fig. 10a / Fig. 10b, which is combined with an internal part of the ID diffuser, in which, throughout the length L, a circular cross section is present. The length L of the outer part of the diffuser AD is the same size as the length I of the inner part of the diffuser ID.
    [00062] Figs. 19a / 19b, show a fan arrangement according to invention 1, as shown in Fig. 18a / Fig. 18b, with the difference that the external part of the AD diffuser has a conformation according to Fig. 11 a / Fig. 11b.
    [00063] Figs. 20a / 20b have a fan arrangement 1 according to the invention, in which an internal part of the ID diffuser is present with a conformation according to Fig. 12a / Fig. 12b -but without rounded corners with 100% Lint length -which is combined with an external part of the diffuser AD, and in which a circular cross section is present throughout the length L. The Lext length on the outside of the AD diffuser is greater than the Lint length on the inside of the ID diffuser.
    [00064] Figs. 21a / 21b show a valve arrangement 1 according to the invention according to Fig. 10a / Fig. 10b, with the difference that the internal part of the ID diffuser has a finish according to Figs. 14a / 14b.
    [00065] The different forms of execution presented above of the invention each have specific advantages that are determined by the construction of the respective fan 2, in particular in the flow field of the fan 2 and / or available built space as well as other marginal conditions. This is demonstrated by way of example by Fig. 22 and Fig. 23 already mentioned above.
    [00066] In the presentation shown in Fig. 23a / Fig. 23b of the version according to Fig. 12a / Fig. 12b, there is not only an external part of the AD diffuser exclusively (without internal part of the ID diffuser), but also an internal part of the ID diffuser exclusively (without external part of the AD diffuser), which can perform the function of a diffuser 3 complete, which is indicated in the drawing by the reference sign 3 between clamps. A diffuser space 3, which in the versions mentioned last corresponds to the internal compartment I of the other versions, will therefore, in these versions also be designated with the reference letter I. As shown in Fig. 23a in particular, this space is limited on the one hand through the wall 5 and on the one hand through the internal part of the diffuser ID, and between these two parts 5, ID extends to the outlet opening 20, that is, the face of the flow cross section A2 of the diffuser 3. Therefore, an external housing need not be present 30.
    [00067] As can be seen from the previous versions, the present invention is not restricted to the examples of execution presented, but comprises all means and measures of identical action in the sense of the invention. Thus, it is also framed in the context of the invention when the inlet opening 10, due to a corresponding conformation of the external part of the AD diffuser and / or the internal part of the ID diffuser, does not have a cross-section 11 in circular ring shape and / or the outlet opening 20, due to a corresponding conformation of the external part of the AD diffuser and / or the internal part of the ID diffuser, does not have an annular cross-section 21, with a square external and internal contour, but which, anyway , it has from its basic formation an opening 20 in ring shape.
    [00068] The rotational symmetry according to the invention, in at least one cross-sectional area of the internal compartment of diffuser I, can, on the one hand, be produced through a corresponding conformation - exclusive - of the external part of the AD diffuser or of the internal diffuser ID or, otherwise, both by the shape of the external housing 30, as well as that of the internal housing 40. In this case, the cross section of the internal diffuser compartment I can change in the direction of the main flow S in the most varied form .
    [00069] In addition to the embodiments shown in the drawings, in the case with other embodiments not shown, for example, the following two are preferably viable: an external part of the AD diffuser with the following conformation: with 0% of length L - round (rotational symmetry), with 30% of the length L -square (non-rotational symmetry), with 60% -square (rotational symmetry), with 100% -square (of non-rotational symmetry) or an internal part of the ID diffuser which is conformed to any polygonal cross section with a number of corners other than quadrangular, in particular pentagonal.
    [00070] Contrary to diffusers that are used behind gas turbines, and whose flow, under the action of the last driving wheel provided for there, no longer presents torsion, the invention extends in particular to diffusers 3 that are used behind fans 2 without conductive wheel, the fans 2 producing a twist in the gas stream.
    [00071] Furthermore, the invention is not restricted to the combinations of characteristics defined in the embodiments, but it can also be defined by any other random combinations of certain characteristics of all the individual characteristics disclosed. This means that basically, each individual feature of the present invention can be abandoned, that is, it can be replaced at least elsewhere in the application with an individual feature revealed. In this sense, the claim version should be understood only as a first attempt at formulating an invention. Reference listing 1. Fan arrangement 2. Fan of 1 3. Diffuser of 1 4. Motor of 2 5. Wall ring of 1 6. Base for 1 7. Paddle of 2 8. Hub of 2 9a. Support and modeling ring of 3 (Fig. 9) 9b. Support rod of 3 (Fig. 9) 10. Inlet opening at 3 11. Cross section at 10 20. Outlet opening at 3 21. Cross section at 20 30. Outer housing at 3 31. Cut at 30 at 10 32 30 of 20 cut 40. Internal housing of 3 41. Cross section of 40 of 10 42. Cross section of 40 of 20 AD. Outside of diffuser A1. Transverse face of 10 A2. Transverse face of 20 D1. Outside diameter 10 I. Internal compartment of the ID diffuser. Internal part of the diffuser L. length 3, AD / ID Lext. Length of AD Lint. ID length P. section (Fig. 9) S. main direction of flow through 3 X -X. Longitudinal axis through 1, 2, 3.
    权利要求:
    Claims (11)
    [0001]
    1. Fan arrangement (1) comprising a diffuser (3) and a fan (2) of axial, radial or diagonal construction, the diffuser (3) being attached to at least a static part of the fan (2) by means fasteners or by means of friction or positive union closing connections, the diffuser (3) comprising an inlet opening (10) and an outlet opening (20) for a gaseous medium flowing through an internal diffuser compartment (I) which is surrounded by an external housing (30) in a main flow direction (S) axially oriented from the inlet opening (10) to the outlet opening (20), the cross section (21) of the opening being outlet (20) is larger than the cross section (11) of the inlet opening (10) and the cross section of the internal diffuser compartment (I) increases from the cross section (11) of the inlet opening (10) to the section cross section (21) of the outlet opening (20), the outer housing (30) forming an external part of the diff user (AD) that limits the internal compartment of the diffuser (I) on the outside, and concentric to the external part of the diffuser (AD) is an internal part of the diffuser (ID) which, with an internal housing (40) ), limits the internal diffuser compartment (I) internally, and the external part of the diffuser (AD) and / or the internal part of the diffuser (ID) is / are so designed that the cross section of the internal diffuser compartment (I) is symmetric non-rotationally at least at one point, and along the main flow direction (S), the cross section of the outer part of the diffuser (AD) changes from a circular cross section (31) at the opening of inlet (10) for a non-circular cross-section (32) in the outlet opening (20), characterized by the fact that the diffuser (3) consists of originally curved and interconnected planar plates or a canvas (P) that is / they are stiffened with the aid of support and modeling rings (9a) that comprise the opening inlet rupture (10) and the outlet opening (20).
    [0002]
    2. Fan arrangement (1) according to claim 1, characterized by the fact that the non-circular cross section (32) of the outer part of the diffuser (AD) and / or the inner part of the diffuser (ID) is polygonal, in particular square, in its basic form.
    [0003]
    Fan arrangement (1) according to claim 1 or 2, characterized in that the diffuser (3) is constructed of a plurality of individual parts of the diffuser, which are connected to each other by means of fixing means, such as such as screws, rivets, clamps for connections of the form by friction and / or connections of material, such as through a bayonet type lock, by a clip fixation, by a welded connection.
    [0004]
    4. Fan arrangement (1) according to any one of the preceding claims, characterized by the fact that the inner housing (40), the outer housing (30) and / or parts thereof are / are made of plastic and are / are produced by primary molding or molding processes, such as injection molding, extrusion, rotational molding, foam molding, deep vacuum inlay, blow molding.
    [0005]
    5. Fan arrangement (1) according to claim 4, characterized by the fact that highly mechanically requested areas of the internal housing (40), the external housing (30) and / or its parts are reinforced by at least one part of metal inserted during the primary modeling process or applied later.
    [0006]
    6. Fan arrangement (1) according to any of the preceding claims, characterized in that a diffuser support structure (3) is a structure assembled with a thin material, in particular plastic or sheet metal.
    [0007]
    7. Fan arrangement (1) according to any of the preceding claims, characterized by the fact that a protection against contact is arranged in the inner housing (40) and / or the outer housing (30), which is formed as a part attached to the internal housing (40) and / or the external housing (30).
    [0008]
    Fan arrangement (1) according to any one of the preceding claims, characterized by the fact that a driving wheel is arranged in the inner housing (40) and / or the outer housing (30), which wheel is formed as a separate part attached to the inner housing (40) and / or the outer housing (30) and consists of fixed conductive elements that are so formed that they deflect circumferential and / or radial components from the flow velocity in the axial direction (X-X ).
    [0009]
    Fan arrangement (1) according to any one of the preceding claims, characterized by an acoustic insulation, in particular the internal compartment of the diffuser (I) is covered with an acoustic insulation material in such a way that the free surface the sound insulation material on the side of the internal housing (40) facing the main flow (S) and / or the external housing (30) forms a fluidically effective diffuser wall.
    [0010]
    10. Fan arrangement (1) according to claim 9, characterized by the fact that an acoustic insulation material is applied to the outer face of the diffuser of the outer housing (30) away from the main flow (S).
    [0011]
    11. Fan arrangement (1) according to claim 9, characterized in that the outer part of the diffuser (AD) and / or the inner part of the diffuser (ID) consists partially or in particular completely of the sound insulation material
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013013910B1|2020-07-28|fan arrangement comprising a diffuser and a fan of axial, radial or diagonal construction
    ES2355822T3|2011-03-31|RADIAL FAN WHEEL, FAN UNIT AND RADIAL FAN PROVISION.
    US20160146222A1|2016-05-26|Air moving device
    ES2620304T3|2017-06-28|Centrifugal fan
    ES2555460T3|2016-01-04|Static mixer for the treatment of exhaust gases and its manufacturing method
    KR101176519B1|2012-08-23|Back draft damper
    ES2252076T3|2006-05-16|ROTOR OF SINGLE SHOVEL OR MULTIPLE SHOES.
    AU2008242166C1|2013-06-06|Radial blade wheel
    JP4663259B2|2011-04-06|Blower and vacuum cleaner
    US8578700B2|2013-11-12|Gas turbine engine with fluid mixing arrangement
    JP5230805B2|2013-07-10|Multi-blade blower
    WO2006106744A1|2006-10-12|Centrifugal blower
    ES2357754T3|2011-04-29|DRIVER FOR A CENTRIFUGAL COMPRESSOR.
    US20080253896A1|2008-10-16|High efficiency fan blades with airflow-directing baffle elements
    CN104302927B|2019-10-11|Diffuser, the ventilation blower with this diffuser and the equipment with this ventilation blower
    JP2011208637A|2011-10-20|System and method for exhaust diffuser
    ES2619808T3|2017-06-27|A structural element of an air intake of an air vehicle consisting of a set of passages with a hexagonal cross section
    BR112014007517B1|2021-06-15|TURBOMACHINE WITH NON-FAIRED FAN
    JP2008144667A|2008-06-26|Impeller for blower
    TWI625467B|2018-06-01|Propeller fan and fluid delivery device
    EP3043077B1|2019-11-27|Propeller fan, air-blowing device, and outdoor unit
    US20100172750A1|2010-07-08|Air conditioning apparatus equipped with a compressor and a vortex
    BR112020025518A2|2021-03-09|FAN AND GUIDE DEVICE FOR A FAN
    JPWO2017145275A1|2018-09-13|Blower and air conditioner using the same
    US20140023516A1|2014-01-23|Diagonal impeller for a diagonal fan, and diagonal fan
    同族专利:
    公开号 | 公开日
    DE202010016820U1|2012-03-26|
    ES2782361T3|2020-09-14|
    AU2011347657A1|2013-07-04|
    MX2013007001A|2013-07-29|
    MX349369B|2017-07-26|
    SG191231A1|2013-08-30|
    US10072671B2|2018-09-11|
    CL2013001830A1|2014-01-24|
    EP2655891B1|2020-02-05|
    CN103270315B|2016-12-07|
    BR112013013910A2|2016-09-13|
    CN103270315A|2013-08-28|
    WO2012084725A1|2012-06-28|
    KR20130143094A|2013-12-30|
    EP2655891A1|2013-10-30|
    US20140086728A1|2014-03-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1940790A|1930-10-18|1933-12-26|Walter S Diehl|Fluid conducting passage|
    US2144035A|1935-09-20|1939-01-17|Bendix Prod Corp|Fan blast transformer|
    US2376642A|1940-05-16|1945-05-22|James Mfg Co|Knockdown ventilator|
    US2750865A|1951-02-14|1956-06-19|Allied Thermal Corp|Diffuser|
    US2668523A|1952-12-11|1954-02-09|Chrysler Corp|Fan shroud|
    CA1109800A|1975-07-10|1981-09-29|Oliver C. Eckel|Wind turbine|
    US4077206A|1976-04-16|1978-03-07|The Boeing Company|Gas turbine mixer apparatus for suppressing engine core noise and engine fan noise|
    FR2683599B1|1991-11-07|1994-03-04|Ecia|IMPROVED FAIRING FOR FAN AND ITS APPLICATION TO A MOTOR FAN GROUP OF AUTOMOBILE.|
    EP0581978B1|1992-08-03|1996-01-03|Asea Brown Boveri Ag|Multi-zone diffuser for turbomachine|
    US5355417A|1992-10-21|1994-10-11|The Center For Innovative Technology|Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors|
    FR2697287B1|1992-10-26|1994-12-09|Europ Gas Turbines Sa|Gas turbine exhaust diffuser.|
    US5728979A|1993-04-05|1998-03-17|Air Handling Engineering Ltd.|Air handling structure for fan inlet and outlet|
    US6375416B1|1993-07-15|2002-04-23|Kevin J. Farrell|Technique for reducing acoustic radiation in turbomachinery|
    FR2711771B1|1993-10-27|1995-12-01|Snecma|Variable circumferential feed chamber diffuser.|
    JP4276363B2|2000-07-31|2009-06-10|株式会社小松製作所|Method for forming porous sound absorbing material used for noise reduction mechanism of fan device|
    FR2816361B1|2000-11-08|2003-03-14|Faurecia Ind|ASSEMBLY COMPRISING A HEAT EXCHANGER, A VENTILATOR AND MEANS OF PIPING AN AIR FLOW, AND CORRESPONDING MOTOR VEHICLE|
    US6705251B2|2001-02-09|2004-03-16|Ctb Ip, Inc.|Method for enhancing poultry production|
    US20030012649A1|2001-07-16|2003-01-16|Masaharu Sakai|Centrifugal blower|
    US7218011B2|2003-04-16|2007-05-15|Composite Support & Solutions, Inc.|Diffuser-augmented wind turbine|
    US7028542B2|2004-07-30|2006-04-18|Metni N Alan|Reduced drag cable for use in wind tunnels and other locations|
    US7611403B2|2004-11-15|2009-11-03|Ctb, Inc.|Method and apparatus for a ventilation system|
    DE102006012356A1|2006-03-17|2007-09-20|Gebhardt Ventilatoren Gmbh & Co. Kg|Fan assembly has a fan holding plate, at least twice the size of the air inlet, acting as a diffuser for the radial air outflow|
    FR2934009B1|2008-07-21|2010-09-03|Ge Energy Products France Snc|EXHAUST DIFFUSER FOR GAS TURBINE|
    GB0819608D0|2008-10-24|2008-12-03|Mosen Ltd|Improved tunnel ventilation device|
    RU2541609C2|2009-06-19|2015-02-20|Нью Волд Энерджи Энтерпрайзис Лимитед|Pressure-controlled device for improvement of wind turbine parameters|US9157453B2|2011-08-23|2015-10-13|Ctb, Inc.|Plastic fan shroud and cone assembly and method|
    DE102012003336A1|2012-02-17|2013-08-22|Ziehl-Abegg Ag|Diffuser, fan with such a diffuser and device with such fans|
    DE102012019795A1|2012-10-05|2014-04-10|Ziehl-Abegg Ag|fan unit|
    DE102012109545A1|2012-10-08|2014-04-10|Ebm-Papst Mulfingen Gmbh & Co. Kg|"Housing for a fan or fan"|
    HUE026127T2|2012-10-08|2016-05-30|Ebm-Papst Mulfingen Gmbh & Co Kg|Housing for an axial ventilator|
    JP6385752B2|2013-12-02|2018-09-05|三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ．|Outdoor unit for blower and air conditioner|
    DE102014111767A1|2014-08-18|2016-02-18|Ebm-Papst Mulfingen Gmbh & Co. Kg|Axial|
    DE102014114798A1|2014-10-13|2016-04-14|Thermofin Gmbh|Axial fan with external and internal diffuser|
    US10081250B2|2014-12-15|2018-09-25|Dayton-Phoenix Group, Inc.|Cooling fan vane assembly for a resistor grid|
    US9915267B2|2015-06-08|2018-03-13|Air Distribution Technologies Ip, Llc|Fan inlet recirculation guide vanes|
    JP6571422B2|2015-07-03|2019-09-04|株式会社神戸製鋼所|Packaged air-cooled screw compressor|
    WO2017008025A1|2015-07-09|2017-01-12|Xcelaero Corporation|Compact axial fan|
    DE202017101353U1|2017-03-07|2017-05-09|Ebm-Papst Mulfingen Gmbh & Co. Kg|An air guide|
    US10737797B2|2017-07-21|2020-08-11|General Electric Company|Vertical takeoff and landing aircraft|
    DE102018211809A1|2018-07-16|2020-01-16|Ziehl-Abegg Se|Housing for a fan and fan|
    DE102018128791A1|2018-11-16|2020-05-20|Ebm-Papst Mulfingen Gmbh & Co. Kg|Diagonal fan with guide device|
    DE102018128792A1|2018-11-16|2020-05-20|Ebm-Papst Mulfingen Gmbh & Co. Kg|Compact diagonal fan with guide device|
    DE102019101096A1|2019-01-16|2020-07-16|Ebm-Papst Mulfingen Gmbh & Co. Kg|Flow guiding device and blower arrangement with flow guiding device|
    CN111207114B|2020-03-13|2020-10-27|空气动力学国家重点实验室|Exhaust expander structure for reducing pneumatic noise of fan|
    US20210355959A1|2020-05-13|2021-11-18|Shenzhen Lanhe Technologies Co., Ltd.|Portable blowing device|
    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-06-02| B09A| Decision: intention to grant|
    2020-07-28| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202010016820.1|2010-12-21|
    DE202010016820U|DE202010016820U1|2010-12-21|2010-12-21|Diffuser for a fan and fan assembly with such a diffuser|
    PCT/EP2011/073090|WO2012084725A1|2010-12-21|2011-12-16|Fan diffuser having a circular inlet and a rotationally asymmetrical outlet|
    [返回顶部]