EP4086463B1 - Integriertes diffusorgitter für axiallüfter - Google Patents

Integriertes diffusorgitter für axiallüfter Download PDF

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Publication number
EP4086463B1
EP4086463B1 EP22171642.6A EP22171642A EP4086463B1 EP 4086463 B1 EP4086463 B1 EP 4086463B1 EP 22171642 A EP22171642 A EP 22171642A EP 4086463 B1 EP4086463 B1 EP 4086463B1
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EP
European Patent Office
Prior art keywords
spokes
radial
grille
degrees
integrated diffuser
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP22171642.6A
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English (en)
French (fr)
Other versions
EP4086463A1 (de
Inventor
Mina Adel Zaki
Richie C. Stauter
Mark Patrick RAU
Ryan K. Dygert
Peter R. Bushnell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
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Publication date
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Publication of EP4086463A1 publication Critical patent/EP4086463A1/de
Application granted granted Critical
Publication of EP4086463B1 publication Critical patent/EP4086463B1/de
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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
    • 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
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • F04D29/40—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
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards

Definitions

  • the invention relates to an integrated diffuser grille suitable for use with coil unit, such as a grille for a fan of an air conditioning system.
  • Conventional air conditioning units usually include an indoor unit for evaporation and heat absorption and an outdoor unit for condensation and heat dissipation.
  • outdoor units or condensing units include grilles positioned over each fan to prevent foreign objects from being introduced into the flow path of the fan and serve as finger protection without impeding the fan performance.
  • the grilles present in existing outdoor units or condensing units are typically wire grilles (made of metal). While existing wire grilles are suitable for their intended purpose, it is desirable to provide an alternate composite grille or guard without impeding the operational efficiency of the system or the compliancy with the UL standards required for such part.
  • US 2005/238481 A1 discloses a fan guard composed of a plurality of extending ribs extending from a blocking plate to an outer frame, a plurality of inner ribs arranged between the extending ribs and extending from the blocking plate to the substantial center in the radial direction, and a plurality of outer ribs arranged between the extending ribs and extending from the substantial center in the radial direction to the outer frame.
  • the number of the inner ribs is set smaller than the number of the outer ribs.
  • the plurality of radial spokes and the plurality of partial spokes are configured to straighten an air flow as it flows across the plurality of radial spokes and the plurality of partial spokes.
  • Each of the plurality of radial spokes includes a radially inner portion adjacent to the hub, a radially outer portion adjacent to the stack diffuser wall, and a radially middle portion disposed between the radially inner portion and the radially outer portion.
  • the radially inner portion extends from 0% to about 20% of the radial length
  • the radially middle portion extends from about 20% to about 70% of the radial length
  • the radially outer portion extends from about 70% to 100% of the radial length.
  • the radially inner portion of at least one of the plurality of radial spokes has at least one of a spoke pitch angle that increases from about 45-55 degrees to about 60-65 degrees relative to a circumferential direction, a camber angle that decreases from about 15-25 degrees to about 0-5 degrees, and a chord that decreases from about 80%-85% to about 70%-75% relative to the chord at a tip section.
  • the radially outer portion of at least one of the plurality of radial spokes has at least one of a spoke pitch angle that decreases from about 70-80 degrees to about 30-50 degrees relative to a circumferential direction, a camber angle that increases from about 0-5 degrees to about 15-25 degrees, and a chord that increases from about 65%-70% to 100% relative to the chord at a tip section.
  • the radially middle portion of at least one of the plurality of radial spokes has at least one of a spoke pitch angle that increases from about 60-65 degrees to about 70-80 degrees relative to a circumferential direction, a camber angle that is constant between about 0-5 degrees, and a chord that decreases from about 70%-75% to about 65%-70% relative to the chord at a tip section.
  • Each of the plurality of partial spokes has an airfoil-shape and a configuration of the plurality of partial spokes is substantially identical to a configuration of the plurality of radial spokes at a same radial position.
  • the hub, the stack diffuser wall, the plurality of radial spokes, the plurality of partial spokes, and the plurality of circumferential elements are integrally formed as a single unitary structure, the single unitary structure being formed from a non-metal material.
  • the single unitary structure is formed from a plastic material.
  • the plurality of circumferential elements have an upstream side and a downstream side, and the upstream side of the at least one circumferential element has a non-uniform contour.
  • a depth increases in a direction toward the upstream side of the at least one circumferential element at a location adjacent to an interface with each of the plurality of radial spokes.
  • the radial length of the plurality of partial spokes is less than or equal to about 40% of the radial length of the plurality of radial spokes.
  • the grille comprises a plurality of features integrally formed with the stack diffuser wall.
  • the plurality of features are radially aligned with the plurality of radial spokes and the plurality of partial spokes.
  • the plurality of features are arranged in groups, the groups being spaced about a periphery of the outer wall.
  • the integrated diffuser grille is part of a top cover assembly of an air chiller unit of an air conditioning system.
  • the top cover assembly further comprises a fan assembly, the integrated diffuser grille being positioned in overlapping arrangement with the fan assembly to restrict access to the fan assembly.
  • the integrated diffuser grille is positioned downstream of the fan assembly relative to an airflow through the fan assembly.
  • each coil unit 20 has a housing including a base or base pan 22 having a generally rectangular planform.
  • the planform of the base pan 22 is another configuration, such as square, cylindrical, or another shape for example, are also envisaged.
  • the base pan 22 supports the remainder of the components of the coil unit 20.
  • a heat exchanger assembly 24 is arranged within the base pan 22.
  • the heat exchanger assembly 24 includes two heat exchanger coils oriented in a V or A-shape.
  • a heat exchanger assembly having another shape, such as a W-shape for example is also contemplated herein.
  • implementations where the heat exchanger assembly 24 wraps about one, two, three, or four sides and/or one or more corners of the footprint of the base pan 22 between two headers are also possible.
  • the planform of the heat exchanger assembly 24 need not match the planform of the base pan 22.
  • a compressor 26, fluidly coupled to the heat exchanger 24, is positioned within the interior of the heat exchanger 24 and is configured to pump refrigerant through a vapor compression cycle.
  • the base pan 22 forms a lower portion of the housing, and a top cover assembly 30 forms an upper portion of the housing.
  • the housing may include one or more louvered panels 28, corner posts (not shown), or another structural member to connect the base pan 22 and the top cover assembly 30.
  • the top cover assembly 30 includes at least one fan assembly 32 and a grille or fan guard 34 associated with each fan assembly 32. It will be appreciated that the grilles or fan guards 34 illustrated in FIGS. 1 , 2A, and 2B are of the configuration commonly used today (i.e., wire grilles made of metal). Although two fan assemblies 32 are shown in the drawings, it should be understood that a coil unit having a single fan assembly, or more than two fan assemblies are contemplated herein.
  • Each fan assembly 32 is configured to draw ambient air radially inward and across the heat exchanger assembly 24. The heated air downstream from the heat exchanger assembly 24 is then drawn axially across the one or more fan assemblies 32 and discharged upwardly through the openings in the fan guard 34, to be described in more detail below.
  • a coil unit 20 having a specific configuration is illustrated and described herein, it should be understood that a coil unit 20 having another configuration is also within the scope of the disclosure.
  • a fan assembly 32 of the top cover assembly 30 includes a housing 36 and a fan rotor or impeller 38 located within the housing 36.
  • the fan rotor 38 generally includes a plurality of fan blades 40 extending radially outward from a hub 42.
  • the distal ends 44 of the fan blades 40 may be connected to a shroud, or alternatively, the distal ends 44 of the fan blades 40 may define an orifice or throat (not shown) between the fan blades 40 and an adjacent surface of the housing 36.
  • a motor 48 operably coupled to the fan assembly 32 may be used to operate the fan assembly 32 by rotating the fan rotor 38 about a fan axis X (see FIG. 2A ).
  • the motor 48 may be oriented generally vertically, such that an axis of rotation (not shown) of the motor 48 is arranged parallel to or coaxial with the fan axis X.
  • a fan assembly 32 having another configuration, or another type of fans, such as a mixed flow fan for example are within the scope of the present disclosure.
  • the integrated diffuser grille 34 (i.e., to replace the traditional wire grille used today, shown in FIGS. 1 , 2A, and 2B ) is illustrated. It will be appreciated that the integrated diffuser grille 34 may be referred to herein as a grille 34. As shown in FIG. 3 , the grille 34 includes a hub 50, a stack diffuser wall or outer wall 52, and a plurality of spokes 54 extending radially between and connected to an exterior of the hub 50 and an interior of the stack diffuser wall 52.
  • the stack diffuser wall 52 may be able to be positioned in overlapping arrangement with the housing 36 of the fan assembly 32 (shown in FIG. 2A ), such as an exterior surface thereof for example.
  • the grille 34 includes sixteen radial spokes 54 spaced equidistantly about the periphery of the hub 50.
  • spokes 54 any number of spokes 54 and/or arrangements where the spokes 54 are non-uniformly spaced are also contemplated herein.
  • the plurality of spokes 54 may be substantially identical, or alternatively, a configuration of the spokes 54 may vary about the periphery of the hub 50.
  • a cross-section of each of the spokes 54 when taken in a plane oriented generally parallel to the fan axis X has an airfoil-shape.
  • airfoil shape refers to a shape having a generally curved leading edge, a curved or pointed trailing edge, and a curved upper and lower surface extending between and connecting the leading edge and the trailing edge.
  • the spokes 54 may have a leading edge facing the upstream fan assembly 32 and a downstream edge facing outwardly towards the ambient atmosphere surrounding the grille 34.
  • a mid-chord point is defined at a center of an imaginary straight line extending between the leading edge and the trailing edge (also known as a chord).
  • a stacking line of each spoke 54 is defined by the mid-chord point of the airfoil shaped cross-section taken over the radial span of the spoke 54. The stacking line of at least one of the plurality of spokes 54 is substantially straight.
  • the airflow A moving through the fan assembly 32 towards the grille 34 generally has both an axial component, a radial component, and a tangential component.
  • the plurality of spokes 54 are configured as outlet guide vanes. Accordingly, the configuration of the radial spokes 54 may be selected to straighten the flow exiting from the fan assembly 32, thereby transforming swirl kinetic energy in the airflow A into static pressure rises across the spokes 54.
  • the spokes 54 may include lean or sweep in the circumferential or axial directions. Parameters of the spokes 54 that may be controlled to diffuse or straighten the air flow A include, but are not limited to spoke pitch angle, chamber angle, and chord.
  • each spoke 54 may vary over the radial length or span of the spoke 54 to compensate for the conditions of the airflow A in that region.
  • each spoke 54 may include a radially inner portion extending from the hub (0%) to about 20% of the span, a radially middle portion extending between about 20% of the span and about 70% of the span, and a radially outer portion extending from about 70% to 100% of the span.
  • An example of a cross-section of a radially inner portion of a spoke 54 is shown in FIG. 8A .
  • the air flow A output from the fan rotor 38 may have a high spanwise swirl adjacent the hub 42, and therefore the radially inner portion of the spokes 54 aligned with the fan rotor 38 surrounding the hub 42.
  • the spoke pitch angle of the radially inner portion of at least one of the plurality of spokes 54 measured relative to the circumferential direction may gradually increase by about ten degrees or more, such as from about 45-55 degrees to about 60-65 degrees for example, relative to the circumferential direction.
  • the camber angle of the radially inner portion of at least one of the plurality of spokes 54 may gradually decrease by at least about 10 degrees, such as from about 15-25 degrees to about 0-5 degrees for example.
  • the chord of the radially inner portion may gradually decrease by about 10-15%, such as from about 80%-85% to about 70%-75% of the chord at a tip section of the spoke 54.
  • the tip section refers to the distal end of the spoke 54, at the interface between the spoke 54 and the outer wall 52.
  • the radially middle portion of at least one of the spokes 54 may have one or more of a spoke pitch angle that gradually increases by about ten degrees or more, such as from about 60-65 degrees to about 70-80 degrees relative to the circumferential direction, a constant camber angle between about 0-5 degrees, and a decrease in chord by about 5% or more, such as from about 70%-75% to about 65%-70% of the chord at the tip section.
  • a spoke pitch angle that gradually increases by about ten degrees or more, such as from about 60-65 degrees to about 70-80 degrees relative to the circumferential direction, a constant camber angle between about 0-5 degrees, and a decrease in chord by about 5% or more, such as from about 70%-75% to about 65%-70% of the chord at the tip section.
  • the air flow A output from the fan rotor 38 may have a high swirl adjacent to the distal ends 44 of the fan blades 40.
  • the radially outer portion of one or more of the spokes 54 see FIG. 8B , which is axially aligned with the distal ends 44 of the fan blades 40, may have a sharp decrease in spoke pitch angle, such as a decrease of about 20 degrees or more, such as from about 70-80 degrees to about 30-50 degrees for example, relative to the circumferential direction.
  • the camber angle of the radially outer portion of at least one of the spokes 54 may sharply increase, such as by at least about 10 degrees for example, from about 0-5 degrees to about 15-25 degrees and/or the chord of the radially outer portion of at least one of the spokes 54 may sharply increase by at least about 20%, such as from about 65%-70% to 100% of the chord at the tip section.
  • the grille 34 additionally includes a plurality of partial spokes 56 extending inwardly from the outer wall 52 and arranged between pairs of adjacent spokes 54.
  • the partial spokes 56 are shown equidistantly spaced between each pair of adj acent spokes 54, implementations where one or more of the partial spokes 56 is arranged at a non-central location between a pair of spokes 54 are also contemplated herein.
  • a radial length of the partial spokes 56 is less than a radial length of the spokes 54.
  • the radial length of the partial spokes 56 is less than 50% of the radial length of the spokes 54, and further may be less than 40%, less than 30%, or even less than 20% of the radial length of the spokes 54.
  • a configuration of the partial spokes 56 may be substantially identical to a configuration of the spokes at the same radial location (see FIG. 8B ).
  • the spoke pitch angle, chord, and camber angle of the partial spokes 56 may be the same as the spoke pitch angle, chord, and camber angle of the spoke 54 at the same spanwise location.
  • a plurality of structural features 60 may be arranged about the periphery of the exterior surface 61 of the outer wall 52.
  • the features 60 may be separate components attached to the outer wall 52 or may be integrally formed as a part of the outer wall 52.
  • the configuration of the structural features 60 may be selected based on the forces and/or stresses experienced at the outer wall 52.
  • the structural features 60 may be individual features, or alternatively, may be formed in groups as shown in the FIGS. Where the features 60 are clustered in groups, the features 60 within each group may be substantially identical or may vary.
  • the individual features 60 or groups of features 60 may extend about only a portion, or alternatively, the entire of periphery of the outer wall 52. Further, the features 60 or groups of features 60 may be continuously arranged or may be spaced at intervals about all or a portion of the periphery. Optionally, each feature 60 or group of features 60 is radially aligned with one of the plurality of spokes 54 or one of the plurality of partial spokes 56, respectively.
  • the grille 34 includes additionally one or more elements 62 extending circumferentially about the hub 50, between the hub 50 and the outer wall 52.
  • the grille 34 includes a plurality of concentrically mounted circumferential elements 62 spaced equidistantly from one another and between the hub 50 and the outer wall 52.
  • a plurality of openings 64 are defined between adjacent circumferential elements 62, radial spokes 54, and partial spokes 56.
  • the size of the plurality of openings 64 may be selected to prevent the introduction of foreign objects or a finger into the fan assembly 32 via the grille 34. However, it should be noted that the size of the openings 64 defined at least partially by the partial spokes 56 are smaller than the openings 64 defined between adjacent radial spokes 54 and circumferential elements 62.
  • each of the circumferential elements 62 may be connected to each of the plurality of radial spokes 54. Further, at least a portion of the circumferential elements 62 may be configured to overlap with the partial spokes 56 and may be similarly connected to each of the partial spokes 56.
  • the hub 50, stack diffuser outer wall 52, spokes 54, partial spokes 56, and circumferential elements 62 are integrally formed as a single unitary component.
  • the grille 34 may be manufactured via any suitable process, including but not limited to injection molding or additive manufacturing for example.
  • the grille 34 is formed from a non-metal material, such as plastic or composite for example. By using a plastic material, the potential for degradation, such as the formation of rust as a result of exposure to the elements (for example rain) is eliminated.
  • implementations where the grille 34 is formed from a metal material are also envisaged.
  • a configuration of one or more of the circumferential elements 62 varies or is non-uniform about its circumference.
  • a thickness of the circumferential elements 62 measured parallel to the fan axis X, may be non-uniform to reduce the aerodynamic losses as the airflow passes over the circumferential elements 62.
  • the depth of one or more of the circumferential elements 62 directly adjacent a radial spoke 54 or partial spoke 56 may be increased relative to a portion of a circumferential element 62 arranged centrally between two radial spokes 54 or centrally between a partial spoke 56 and a radial spoke 54.
  • the thickness may taper from a first depth at a central portion of the circumferential element 62 to a second depth adjacent the spokes 54 and partial spokes 56. Further, this tapered depth may be present at the upstream end of the circumferential elements 62, facing the fan assembly 32. Accordingly, the downstream end of each of the circumferential elements 62 may be substantially uniform about its periphery and arranged within a plane. However, other configurations of the circumferential elements 62 are contemplated herein.
  • the grille 34 may be suitable for use with a coil unit 20.
  • the grille 34 may be configured to satisfy all UL compliance requirements for outdoor fan grilles.
  • the grille may be formed from a UL approved material, satisfy UL finger protection requirements, and may support a structural load of 90 kg over a 152 mm ( 200 pounds over a 6 inches) diameter circle.
  • the performance of the grille 34 may be on par with (or better than) existing wire grilles and may provide a suitable replacement option for existing systems without negatively impacting the aerodynamic performance of the fan assembly or overall system efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (14)

  1. Integriertes Diffusorgitter (34) für eine Rohrschlangeneinheit (20), umfassend:
    eine Nabe (50);
    eine Stapeldiffusorwand (52);
    eine Vielzahl von radialen Speichen (54), die sich zwischen der Nabe (50) und der Stapeldiffusorwand (52) erstrecken;
    eine Vielzahl von Teilspeichen (56), die sich von der Stapeldiffusorwand (52) nach innen erstrecken, wobei eine radiale Länge der Vielzahl von Teilspeichen (56) kleiner als eine radiale Länge der Vielzahl von Speichen (54) ist; und
    eine Vielzahl von Umfangselementen (62), die zwischen der Nabe (50) und der Stapeldiffusorwand (52) angeordnet sind, wobei die Vielzahl von Umfangselementen (62) mit der Vielzahl von radialen Speichen (54) verbunden ist, wobei mindestens ein Umfangselement der Vielzahl von Umfangselementen (62) mit der Vielzahl von Teilspeichen (56) verbunden ist; wobei ein Querschnitt der Vielzahl von radialen Speichen (54) eine Tragflügelform aufweist und wobei mindestens eines von einem Speichensteigungswinkel, einem Wölbungswinkel und einer Sehne der Tragflügelform über eine radiale Länge der Vielzahl von Speichen (54) variiert;
    wobei das integrierte Diffusorgitter (34) dadurch gekennzeichnet ist, dass mindestens ein Umfangselement der Vielzahl von Umfangselementen (62) eine ungleichmäßige Konfiguration um einen Umfang der Vielzahl von Umfangselementen aufweist;
    und dass eine Stapellinie, die durch eine Mittelsehne der Tragflügelform über die radiale Länge mindestens einer der Vielzahl von radialen Speichen (54) definiert ist, eine Gerade ist.
  2. Integriertes Diffusorgitter (34) nach Anspruch 1, wobei die Vielzahl von radialen Speichen (54) und die Vielzahl von Teilspeichen (56) dazu konfiguriert sind, einen Luftstrom gerade auszurichten, wenn er über die Vielzahl von radialen Speichen (54) und die Vielzahl von Teilspeichen (56) strömt.
  3. Integriertes Diffusorgitter (34) nach Anspruch 1 oder 2, wobei jede der Vielzahl von radialen Speichen (54) einen radial inneren Abschnitt benachbart zu der Nabe (50), einen radial äußeren Abschnitt benachbart zu der Stapeldiffusorwand (52) und einen radial mittleren Abschnitt, der zwischen dem radial inneren Abschnitt und dem radial äußeren Abschnitt angeordnet ist, beinhaltet.
  4. Integriertes Diffusorgitter (34) nach Anspruch 3, wobei der radial innere Abschnitt sich von 0 % bis etwa 20 % der radialen Länge erstreckt, der radial mittlere Abschnitt sich von etwa 20 % bis etwa 70 % der radialen Länge erstreckt und der radial äußere Abschnitt sich von etwa 70 % bis 100 % der radialen Länge erstreckt und/oder
    wobei der radial innere Abschnitt von mindestens einer der Vielzahl von radialen Speichen (54) mindestens eines von einem Speichensteigungswinkel, der von etwa 45-55 Grad zu etwa 60-65 Grad relativ zu einer Umfangsrichtung zunimmt, einem Wölbungswinkel, der von etwa 15-25 Grad zu etwa 0-5 Grad abnimmt, und einer Sehne, die von etwa 80-85 % zu etwa 70-75 % relativ zu der Sehne an einem Spitzenabschnitt abnimmt, aufweist.
  5. Integriertes Diffusorgitter (34) nach Anspruch 3 oder 4, wobei der radial äußere Abschnitt von mindestens einer der Vielzahl von radialen Speichen (54) mindestens eines von einem Speichensteigungswinkel, der von etwa 70-80 Grad zu etwa 30-50 Grad relativ zu einer Umfangsrichtung abnimmt, einem Wölbungswinkel, der von etwa 0-5 Grad zu etwa 15-25 Grad zunimmt, und einer Sehne, die von etwa 65-70 % zu 100 % relativ zu der Sehne an einem Spitzenabschnitt zunimmt, aufweist.
  6. Integriertes Diffusorgitter (34) nach Anspruch 3, 4 oder 5, wobei der radial mittlere Abschnitt von mindestens einer der Vielzahl von radialen Speichen (54) mindestens eines von einem Speichensteigungswinkel, der von etwa 60-65 Grad zu etwa 70-80 Grad relativ zu einer Umfangsrichtung zunimmt, einem Wölbungswinkel, der konstant zwischen etwa 0-5 Grad liegt, und einer Sehne, die von etwa 70-75 % zu etwa 65-70 % relativ zu der Sehne an einem Spitzenabschnitt abnimmt, aufweist.
  7. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, wobei jede der Vielzahl von Teilspeichen (56) eine Tragflügelform aufweist und eine Konfiguration der Vielzahl von Teilspeichen (56) im Wesentlichen identisch ist mit einer Konfiguration der Vielzahl von Radialspeichen (54) an einer gleichen radialen Position.
  8. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, wobei die Nabe (50), die Stapeldiffusorwand (52), die Vielzahl von radialen Speichen (54), die Vielzahl von Teilspeichen (56) und die Vielzahl von Umfangselementen (62) einstückig als eine einzige einheitliche Struktur ausgebildet sind, wobei die einzige einheitliche Struktur aus einem nichtmetallischen Material ausgebildet ist, wobei optional die einzelne einheitliche Struktur aus einem Kunststoffmaterial ausgebildet ist.
  9. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, wobei die Vielzahl von Umfangselementen (62) eine stromaufwärtige Seite und eine stromabwärtige Seite aufweist, und die stromaufwärtige Seite des mindestens einen Umfangselements eine ungleichmäßige Kontur aufweist, wobei optional eine Tiefe in einer Richtung zu der stromaufwärtigen Seite des mindestens einen Umfangselements an einer Stelle benachbart zu einer Schnittstelle mit jeder der Vielzahl von radialen Speichen (54) zunimmt.
  10. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, wobei die radiale Länge der Vielzahl von Teilspeichen (56) kleiner oder gleich etwa 40 % der radialen Länge der Vielzahl von Radialspeichen (54) ist.
  11. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, umfassend eine Vielzahl von Merkmalen (60), die einstückig mit der Stapeldiffusorwand (52) ausgebildet ist.
  12. Integriertes Diffusorgitter (34) nach Anspruch 11, wobei die Vielzahl von Merkmalen (60) radial mit der Vielzahl von radialen Speichen (54) und der Vielzahl von Teilspeichen (56) ausgerichtet ist; und/oder
    wobei die Vielzahl von Merkmalen (60) in Gruppen angeordnet ist, wobei die Gruppen um einen Umfang der Außenwand beabstandet sind.
  13. Integriertes Diffusorgitter (34) nach einem der vorhergehenden Ansprüche, wobei das integrierte Diffusorgitter (34) Teil einer oberen Abdeckungsbaugruppe (30) einer Luftkühlereinheit (10) einer Klimaanlage ist.
  14. Integriertes Diffusorgitter (34) nach Anspruch 13, wobei die obere Abdeckungsbaugruppe (30) eine Lüfterbaugruppe (32) umfasst, wobei das integrierte Diffusorgitter (34) in überlappender Anordnung mit der Lüfterbaugruppe (32) positioniert ist, um den Zugang zu der Lüfterbaugruppe (32) zu beschränken; und/oder
    wobei das integrierte Diffusorgitter (34) stromabwärts der Lüfterbaugruppe (32) relativ zu einem Luftstrom durch die Lüfterbaugruppe (32) positioniert ist.
EP22171642.6A 2021-05-06 2022-05-04 Integriertes diffusorgitter für axiallüfter Active EP4086463B1 (de)

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USD911512S1 (en) * 2018-01-31 2021-02-23 Carrier Corporation Axial flow fan
US12129867B2 (en) * 2022-10-27 2024-10-29 Hanon Systems Efp Deutschland Gmbh Fan for a heat exchanger of a vehicle
CN119826254A (zh) * 2025-02-28 2025-04-15 青岛海信日立空调系统有限公司 一种空调室外机

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US3178099A (en) * 1963-10-09 1965-04-13 Lachlan W Child Under-body ventilating fan units
JP2004156884A (ja) * 2002-11-08 2004-06-03 Daikin Ind Ltd 送風ユニットのファンガード
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US20220357072A1 (en) 2022-11-10
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