EP0515839A1 - Rotor for a mixed flow fan - Google Patents
Rotor for a mixed flow fan Download PDFInfo
- Publication number
- EP0515839A1 EP0515839A1 EP92107015A EP92107015A EP0515839A1 EP 0515839 A1 EP0515839 A1 EP 0515839A1 EP 92107015 A EP92107015 A EP 92107015A EP 92107015 A EP92107015 A EP 92107015A EP 0515839 A1 EP0515839 A1 EP 0515839A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hub
- fan
- impeller according
- wall
- impeller
- 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.)
- Granted
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
Definitions
- the invention relates to an impeller for a semi-axial fan, in particular for a fan for a radiator of a motor vehicle engine, consisting of a plurality of fan blades, which are attached to a common hub, in particular are formed in one piece.
- an axial fan wheel for a cooling fan of a water-cooled internal combustion engine for a motor vehicle which acts semi-axially.
- the cooling fans of motor vehicles in particular commercial vehicles, are known to operate in a severely throttled state, which is due to the installation of the fan wheel behind the radiator and in front of the engine block.
- This type of installation results in an axially and radially obliquely backward outflow, which can be referred to as semi-axial and which leads to a dead water area with swirling being established behind the fan blades below a certain boundary line.
- a disk is attached to the hub, the diameter of which is at least 30% larger than the hub diameter.
- This disc can be conical and it can also be a carrier for the fan blades themselves. It has been shown that improvements can be achieved by the arrangement of such a conical hub disc, that such a configuration but it does not prove effective in all applications and, above all, such a design is also not transferable to impellers that are made in one piece from plastic.
- the invention has for its object to choose the design of an impeller of the type mentioned so that the harmful ventilation losses with semi-axial fan wheels can be reduced without the arrangement of a disc sitting behind the hub.
- a hub ramp which rises counter to the direction of rotation, which adjoins the hub and is delimited on the outside by an outer surface which forms at the interface of the pressure fan of each fan blade Dead water area runs.
- the outer surface of this hub ramp can be smooth and steadily increase. It can run from the leading edge of the fan blades to the trailing edge and have an axially running front edge and extend to the rear end face of the hub. As a result, a wedge-shaped ramp area is formed behind each fan blade and in the area of its blade root, which increases the flow but also increases the stability in the area of the blade root.
- the outer surface can advantageously be part of a slant rising wall, which is supported at least at its rear end in the flow direction via a connecting web on the hub.
- the hub ramp can be made hollow so that the weight of the impeller remains smaller without the function being impaired.
- the connecting web can have the same wall thicknesses as the wall and can run axially and with a constant wall thickness together with the wall.
- a very simple axial demolding is then possible.
- the hub itself can also be designed as a hollow profile and constructed from wall parts which run axially and, for reasons of injection technology, have approximately the same wall thickness as the connecting web and the wall.
- Such an impeller has high stability and can be easily produced in one piece without the weight being too high.
- FIG. 1 shows an impeller (1) made of plastic, which consists of a hub (2) and of fan blades (3) radially extending outward therefrom, which are curved in a known manner - see also FIG. 2.
- a hub ramp (4) is provided on the pressure side of each blade (3), which rises to the rear against the direction of rotation (5) of the impeller (1).
- This hub ramp (4) is immediate provided adjacent to the hub (2).
- all fan blades (3) are surrounded by a ring (6) which also contributes to increasing the stability of the fan wheel (1) molded in one piece from plastic.
- the hub ramp (4) is provided with an outwardly directed smooth outer side (7) which runs from the leading edge (8) of each fan blade (3) to its trailing edge (9).
- This outer surface (7) has an axially extending front edge (10) and extends from the rear (3a) of each fan blade (3) to the rear end surface (2b) of the hub (2). Due to the direction of rotation (5) of the impeller, there is an air flow in the direction of arrow (11), which would have a dead water area on the pressure side - adjacent to the rear (3a) - of each fan blade (3) due to the semi-axial flow without hub ramp.
- the outer surface (7) of the hub ramp (4) is now designed to rise so that it runs along the imaginary interface between the dead water area that forms on the pressure side and the semi-axial flow that arises.
- the outer surface (7) of the hub ramp (4) is one side of a wall (12) which rises obliquely from the outside of the hub (2) and which is at its rear end in the direction of rotation by an approximately flush with it Trailing edge (9) of the fan blade (3) arranged connecting web (13) is in turn supported on the outer circumference of the hub (2).
- a wall (12) which rises obliquely from the outside of the hub (2) and which is at its rear end in the direction of rotation by an approximately flush with it Trailing edge (9) of the fan blade (3) arranged connecting web (13) is in turn supported on the outer circumference of the hub (2).
- the hub (2) is also provided with cavities (15, 16) which are each formed by wall parts (17 and 18) which are arranged concentrically to the axis (19) of the impeller (1) and in turn radially extending web parts (20) are separated from each other, which are part of the hollow profile structure of the hub (2).
- All wall parts of the hub ramp (4) that is to say the wall (12), the connecting web (13), the web (14) and the wall parts (17 and 18) or the webs (20) of the hub (2) itself, are approximately in of the same wall thickness and extend axially with their outer surfaces, so that one-piece production of the impeller (1) from plastic is possible in a very simple manner.
- the entire impeller can be removed axially from this configuration.
- the material consumption is relatively low because of the hollow profile-like design of the hub (2) and the hub ramp (4). This also applies to the total weight of the impeller thus formed.
Abstract
Description
Die Erfindung betrifft ein Laufrad für einen halbaxial wirkenden Lüfter, insbesondere für einen Lüfter für einen Kühler eines Kraftfahrzeugmotors bestehend aus mehreren Lüfterschaufeln, die an einer gemeinsamen Nabe angebracht, insbesondere einstückig angeformt sind.The invention relates to an impeller for a semi-axial fan, in particular for a fan for a radiator of a motor vehicle engine, consisting of a plurality of fan blades, which are attached to a common hub, in particular are formed in one piece.
Aus der DE 33 04 296 A1 ist ein Axialgebläserad für ein Kühlgebläse eines wassergekühlten Verbrennungsmotors für ein Kraftfahrzeug bekannt, das halbaxial wirkt. Die Kühlgebläse von Kraftfahrzeugen, insbesondere von Nutzfahrzeugen arbeiten bekanntlich in einem stark gedrosselten Zustand, der bedingt ist durch den Einbau des Lüfterrades hinter dem Kühler und vor dem Motorblock. Diese Einbauweise bewirkt eine axial und radial schräg nach hinten verlaufende Abströmung, die als halbaxial bezeichnet werden kann und die dazu führt, daß sich hinter den Lüfterschaufeln unterhalb einer bestimmten Grenzlinie ein Totwassergebiet mit Verwirbelung einstellt. Um die durch diese Wirbel eintretenden Ventilationsverluste zu vermeiden, ist bei dem bekannten Laufrad im Bereich der Austrittskante der Lüfterschaufeln eine Scheibe an die Nabe angesetzt, deren Durchmesser mindestens 30 % größer ist als der Nabendurchmesser. Diese Scheibe kann konisch ausgebildet sein und sie kann auch Träger für die Lüfterschaufeln selbst sein. Es hat sich gezeigt, daß durch die Anordnung einer solchen konischen Nabenscheibe zwar Verbesserungen erzielbar sind, daß sich eine solche Ausgestaltung aber nicht in allen Einsatzfällen als wirksam erweist und vor allen Dingen eine solche Bauweise auch nicht auf Laufräder übertragbar ist, die aus Kunststoff einstückig hergestellt werden.From DE 33 04 296 A1 an axial fan wheel for a cooling fan of a water-cooled internal combustion engine for a motor vehicle is known, which acts semi-axially. The cooling fans of motor vehicles, in particular commercial vehicles, are known to operate in a severely throttled state, which is due to the installation of the fan wheel behind the radiator and in front of the engine block. This type of installation results in an axially and radially obliquely backward outflow, which can be referred to as semi-axial and which leads to a dead water area with swirling being established behind the fan blades below a certain boundary line. In order to avoid the ventilation losses caused by these vortices, in the known impeller in the area of the trailing edge of the fan blades, a disk is attached to the hub, the diameter of which is at least 30% larger than the hub diameter. This disc can be conical and it can also be a carrier for the fan blades themselves. It has been shown that improvements can be achieved by the arrangement of such a conical hub disc, that such a configuration but it does not prove effective in all applications and, above all, such a design is also not transferable to impellers that are made in one piece from plastic.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Laufrad der eingangs genannten Art die Ausgestaltung so zu wählen, daß die schädlichen Ventilationsverluste bei halbaxial wirkenden Lüfterrädern auch ohne die Anordnung einer hinter der Nabe sitzenden Scheibe vermindert werden können.The invention has for its object to choose the design of an impeller of the type mentioned so that the harmful ventilation losses with semi-axial fan wheels can be reduced without the arrangement of a disc sitting behind the hub.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgesehen, daß auf der Druckseite der Lüfterschaufeln jeweils eine entgegen der Drehrichtung ansteigende Nabenrampe vorgesehen ist, die an der Nabe anschließt und nach außen von einer Außenfläche begrenzt ist, die an der Grenzfläche des sich auf der Druckseite jeder Lüfterschaufel bildenden Totwassergebietes verläuft. Durch diese Ausgestaltung kann von vorneherein die Entstehung unerwünschter Ablösungen an jeder einzelnen Schaufel vermindert werden. Die Gesamtströmung wird halbaxial nach außen gelenkt. Der Lüfterwirkungsgrad kann vorteilhaft verbessert werden und es wird auch möglich, die Geräuschentwicklung von Lüfterrädern auf diese Weise einzudämmen. Vorteilhaft ist auch, daß diese Ausgestaltung in sehr einfacher Weise die Herstellung eines Lüfterrades aus Kunststoff ermöglicht.To solve this problem it is provided according to the invention that on the pressure side of the fan blades there is provided a hub ramp which rises counter to the direction of rotation, which adjoins the hub and is delimited on the outside by an outer surface which forms at the interface of the pressure fan of each fan blade Dead water area runs. With this configuration, the occurrence of undesired detachments on each individual blade can be reduced from the outset. The total flow is directed semi-axially outwards. The fan efficiency can advantageously be improved and it also becomes possible to contain the noise generated by fan wheels in this way. It is also advantageous that this configuration enables the production of a plastic fan wheel in a very simple manner.
Nach den Unteransprüchen kann die Außenfläche dieser Nabenrampe glatt ausgebildet sein und stetig ansteigen. Sie kann von der Anströmkante der Lüfterschaufeln bis zur Abströmkante verlaufen und eine axial verlaufende Vorderkante besitzen und sich bis zur hinteren Stirnfläche der Nabe erstrecken. Dadurch wird hinter jeder Lüfterschaufel und im Bereich ihres Schaufelfußes ein keilförmig ansteigender Rampenbereich gebildet, der zur Strömungsverbesserung, aber auch zu einer Erhöhung der Stabilität im Bereich des Schaufelfußes beiträgt. Nach weiteren Unteransprüchen kann die Außenfläche vorteilhaft Teil einer schräg ansteigenden Wand sein, die mindestens an ihrem in der Strömungsrichtung hinteren Ende über einen Verbindungssteg an der Nabe abgestützt ist. Die Nabenrampe kann dadurch hohl ausgestaltet werden, so daß das Gewicht des Laufrades kleiner bleibt, ohne daß die Funktion beeinträchtigt wird. Der Verbindungssteg kann dabei gleiche Wandstärken wie die Wand aufweisen und zusammen mit der Wand axial und mit gleichbleibender Wandstärke verlaufen. Bei der einteiligen Herstellung von Nabe und Lüfterschaufel ist dann eine sehr einfache axiale Entformung möglich. Schließlich kann auch die Nabe selbst als Hohlprofil ausgebildet und aus Wandteilen aufgebaut sein, die axial verlaufen und aus spritztechnischen Gründen in etwa die gleiche Wandstärke wie der Verbindungssteg und die Wand aufweisen. Ein solches Laufrad weist hohe Stabilität auf, läßt sich in einfacher Weise einteilig herstellen, ohne daß das Gewicht zu hoch ist.According to the subclaims, the outer surface of this hub ramp can be smooth and steadily increase. It can run from the leading edge of the fan blades to the trailing edge and have an axially running front edge and extend to the rear end face of the hub. As a result, a wedge-shaped ramp area is formed behind each fan blade and in the area of its blade root, which increases the flow but also increases the stability in the area of the blade root. According to further subclaims, the outer surface can advantageously be part of a slant rising wall, which is supported at least at its rear end in the flow direction via a connecting web on the hub. The hub ramp can be made hollow so that the weight of the impeller remains smaller without the function being impaired. The connecting web can have the same wall thicknesses as the wall and can run axially and with a constant wall thickness together with the wall. In the one-piece manufacture of the hub and fan blade, a very simple axial demolding is then possible. Finally, the hub itself can also be designed as a hollow profile and constructed from wall parts which run axially and, for reasons of injection technology, have approximately the same wall thickness as the connecting web and the wall. Such an impeller has high stability and can be easily produced in one piece without the weight being too high.
Die Erfindung ist anhand eines Ausführungsbeispieles in der Zeichnung dargestellt und wird im folgenden erläutert. Es zeigen:
- Fig. 1
- eine Ansicht eines erfindungsgemäß ausgestalteten Laufrades in Axialrichtung und von der Nabenhinterseite aus gesehen, und
- Fig. 2
- einen Teilschnitt durch das Laufrad der Fig. 1 in Richtung der Schnittlinie II-II gesehen.
- Fig. 1
- a view of an impeller designed according to the invention in the axial direction and seen from the rear of the hub, and
- Fig. 2
- seen a partial section through the impeller of FIG. 1 in the direction of section line II-II.
In der Fig. 1 ist ein Laufrad (1) aus Kunststoff gezeigt, das aus einer Nabe (2) und aus radial von dieser nach außen abgehenden Lüfterschaufeln (3) besteht, die in bekannter Weise - siehe auch Fig. 2 - gekrümmt sind. Im Bereich jedes Schaufelfußes ist auf der Druckseite jeder Schaufel (3) eine Nabenrampe (4) vorgesehen, die entgegen der Drehrichtung (5) des Laufrades (1) nach hinten ansteigt. Diese Nabenrampe (4) ist unmittelbar angrenzend an die Nabe (2) vorgesehen. Beim gezeigten Ausführungsbeispiel sind alle Lüfterschaufeln (3) von einem Ring (6) umgeben, der mit zur Stabilitätserhöhung des aus Kunststoff einstückig gespritzten Lüfterrades (1) beiträgt.1 shows an impeller (1) made of plastic, which consists of a hub (2) and of fan blades (3) radially extending outward therefrom, which are curved in a known manner - see also FIG. 2. In the area of each blade root, a hub ramp (4) is provided on the pressure side of each blade (3), which rises to the rear against the direction of rotation (5) of the impeller (1). This hub ramp (4) is immediate provided adjacent to the hub (2). In the exemplary embodiment shown, all fan blades (3) are surrounded by a ring (6) which also contributes to increasing the stability of the fan wheel (1) molded in one piece from plastic.
Die Nabenrampe (4) ist mit einer nach außen gerichteten glatten Außenseite (7) versehen, die von der Anströmkante (8) jeder Lüfterschaufel (3) bis zu deren Abströmkante (9) verläuft. Diese Außenfläche (7) besitzt eine axial verlaufende Vorderkante (10) und erstreckt sich von der Rückseite (3a) jeder Lüfterschaufel (3) aus bis zur hinteren Stirnfläche (2b) der Nabe (2). Bedingt durch die Drehrichtung (5) des Laufrades entsteht so eine Luftströmung im Sinne des Pfeiles (11), die auf der Druckseite - angrenzend an die Rückseite (3a) - jeder Lüfterschaufel (3) wegen der halbaxialen Strömung ohne Nabenrampe ein Totwassergebiet aufweisen würde. Die Außenfläche (7) der Nabenrampe (4) ist nun so ansteigend ausgebildet, daß sie längs der gedachten Grenzfläche zwischen dem sich auf der Druckseite ausbildenden Totwassergebiet und der entstehenden Halbaxialströmung verläuft. Strömungstechnisch wird auf diese Weise vermieden, daß die sogenannten Ventilationsverluste auftreten. Die Strömungsführung wird verbessert, und es können dadurch auch unerwünschte Geräuschentwicklungen reduziert werden. Die Neigung der Außenfläche (7) der Nabenrampe (4) ist von Fall zu Fall den Betriebsbedingungen anzupassen. Es wäre ggf. auch denkbar, auf die Nabe aufsteckbare und auswechselbare Nabenrampen (4) vorzusehen, die eine Umstellung auf andere Betriebsverhältnisse ermöglichen würden.The hub ramp (4) is provided with an outwardly directed smooth outer side (7) which runs from the leading edge (8) of each fan blade (3) to its trailing edge (9). This outer surface (7) has an axially extending front edge (10) and extends from the rear (3a) of each fan blade (3) to the rear end surface (2b) of the hub (2). Due to the direction of rotation (5) of the impeller, there is an air flow in the direction of arrow (11), which would have a dead water area on the pressure side - adjacent to the rear (3a) - of each fan blade (3) due to the semi-axial flow without hub ramp. The outer surface (7) of the hub ramp (4) is now designed to rise so that it runs along the imaginary interface between the dead water area that forms on the pressure side and the semi-axial flow that arises. In terms of flow technology, this avoids the so-called ventilation losses. The flow guidance is improved, and it can also reduce unwanted noise. The inclination of the outer surface (7) of the hub ramp (4) must be adapted to the operating conditions from case to case. It would also be conceivable, if necessary, to provide hub ramps (4) which can be plugged onto the hub and which can be replaced and which would make it possible to switch to other operating conditions.
Wie aus Fig. 1 hervorgeht, ist die Außenfläche (7) der Nabenrampe (4) die eine Seite einer von der Außenseite der Nabe (2) schräg ansteigenden Wand (12), die an ihrem in der Drehrichtung hinteren Ende durch einen etwa fluchtend zur Abströmkante (9) der Lüfterschaufel (3) angeordneten Verbindungssteg (13) wiederum am Außenumfang der Nabe (2) abgestützt wird. Zwischen dem Verbindungssteg (13) und dem Beginn der Wand (12) (in Drehrichtung vor dem Verbindungssteg (13)) ist noch ein weiterer Verbindungssteg (14) vorgesehen, der beim Ausführungsbeispiel in einen etwa radial verlaufenden Steg übergeht, der wiederum Teil der selbst als Hohlkörper ausgebildeten Nabe (2) ist. Wie zu erkennen ist, ist auch die Nabe (2) mit Hohlräumen (15, 16) versehen, die jeweils durch Wandteile (17 und 18) gebildet werden, die konzentrisch zur Achse (19) des Laufrades (1) angeordnet sind und durch wiederum radial verlaufende Stegteile (20) gegeneinander abgetrennt sind, die Teil der Hohlprofilstruktur der Nabe (2) sind. Alle Wandteile der Nabenrampe (4), also die Wand (12), der Verbindungssteg (13), der Steg (14) und die Wandteile (17 und 18) bzw. die Stege (20) der Nabe (2) selbst sind etwa in gleicher Wandstärke ausgebildet und verlaufen mit ihren Außenflächen axial, so daß eine einteilige Herstellung des Laufrades (1) aus Kunststoff in sehr einfacher Weise möglich ist. Das gesamte Laufrad läßt sich durch diese Ausgestaltung axial entformen. Der Materialverbrauch ist wegen der hohlprofilartigen Ausbildung der Nabe (2) und der Nabenrampe (4) verhältnismäßig gering. Das gilt auch für das Gesamtgewicht des so gebildeten Laufrades.As is apparent from Fig. 1, the outer surface (7) of the hub ramp (4) is one side of a wall (12) which rises obliquely from the outside of the hub (2) and which is at its rear end in the direction of rotation by an approximately flush with it Trailing edge (9) of the fan blade (3) arranged connecting web (13) is in turn supported on the outer circumference of the hub (2). Between the connecting web (13) and the beginning of the wall (12) (in the direction of rotation In front of the connecting web (13)) there is still another connecting web (14) which, in the exemplary embodiment, merges into an approximately radially extending web, which in turn is part of the hub (2) itself designed as a hollow body. As can be seen, the hub (2) is also provided with cavities (15, 16) which are each formed by wall parts (17 and 18) which are arranged concentrically to the axis (19) of the impeller (1) and in turn radially extending web parts (20) are separated from each other, which are part of the hollow profile structure of the hub (2). All wall parts of the hub ramp (4), that is to say the wall (12), the connecting web (13), the web (14) and the wall parts (17 and 18) or the webs (20) of the hub (2) itself, are approximately in of the same wall thickness and extend axially with their outer surfaces, so that one-piece production of the impeller (1) from plastic is possible in a very simple manner. The entire impeller can be removed axially from this configuration. The material consumption is relatively low because of the hollow profile-like design of the hub (2) and the hub ramp (4). This also applies to the total weight of the impeller thus formed.
Es kommt nicht darauf an, daß die einzelnen Lüfterschaufeln (3) von einem Ring (6) umgeben sind. Maßgebend ist die Anordnung der Nabenrampe (4) im Bereich jedes Schaufelfußes, die das auf der Druckseite der Schaufeln sonst entstehende Totwassergebiet abdeckt und für eine halbaxiale Strömungsführung sorgt.It does not matter that the individual fan blades (3) are surrounded by a ring (6). The decisive factor is the arrangement of the hub ramp (4) in the area of each blade root, which covers the dead water area that otherwise arises on the pressure side of the blades and ensures semi-axial flow guidance.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4117342A DE4117342C1 (en) | 1991-05-27 | 1991-05-27 | |
| DE4117342 | 1991-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0515839A1 true EP0515839A1 (en) | 1992-12-02 |
| EP0515839B1 EP0515839B1 (en) | 1996-01-17 |
Family
ID=6432562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92107015A Expired - Lifetime EP0515839B1 (en) | 1991-05-27 | 1992-04-24 | Rotor for a mixed flow fan |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0515839B1 (en) |
| DE (2) | DE4117342C1 (en) |
| ES (1) | ES2082264T3 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19929978A1 (en) * | 1999-06-30 | 2001-01-04 | Behr Gmbh & Co | Fan with axial blades, with air guide elements in entry-side region of hub and on induction side of blades |
| WO2001079704A2 (en) * | 2000-04-14 | 2001-10-25 | Borg Warner Inc. | Cooling fan |
| US6726454B2 (en) | 2001-01-02 | 2004-04-27 | Behr Gmbh & Co. | Fan having axial blades |
| DE102010062301A1 (en) | 2010-12-01 | 2012-06-06 | Behr Gmbh & Co. Kg | Axial |
| USD860427S1 (en) | 2017-09-18 | 2019-09-17 | Horton, Inc. | Ring fan |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19710608B4 (en) * | 1997-03-14 | 2007-10-31 | Behr Gmbh & Co. Kg | Axial fan for the radiator of an internal combustion engine |
| DE102005005977A1 (en) * | 2005-02-09 | 2006-08-10 | Behr Gmbh & Co. Kg | Axial |
| WO2008141253A1 (en) | 2007-05-10 | 2008-11-20 | Borgwarner Inc. | Synergistic blade and hub structure for cooling fans |
| CN102345645B (en) * | 2010-08-02 | 2014-12-31 | 建准电机工业股份有限公司 | Fan base with pressure relief holes |
| DE102014219046A1 (en) | 2014-09-22 | 2016-03-24 | Mahle International Gmbh | fan |
| AU2016246617B2 (en) | 2015-04-08 | 2020-03-19 | Horton, Inc. | Fan blade surface features |
| WO2020028010A1 (en) | 2018-08-02 | 2020-02-06 | Horton, Inc. | Low solidity vehicle cooling fan |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361676A (en) * | 1939-05-15 | 1944-10-31 | Lin E Baker | Device for impelling and propelling fluid or gas or the like |
| FR1518482A (en) * | 1967-04-12 | 1968-03-22 | Seeber Fa Willi | Fan wheel |
| DE3304296A1 (en) * | 1982-03-15 | 1983-09-15 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Axial fan impeller, especially for a cooling fan for water-cooled internal combustion engines |
-
1991
- 1991-05-27 DE DE4117342A patent/DE4117342C1/de not_active Expired - Lifetime
-
1992
- 1992-04-24 ES ES92107015T patent/ES2082264T3/en not_active Expired - Lifetime
- 1992-04-24 DE DE59205066T patent/DE59205066D1/en not_active Expired - Lifetime
- 1992-04-24 EP EP92107015A patent/EP0515839B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361676A (en) * | 1939-05-15 | 1944-10-31 | Lin E Baker | Device for impelling and propelling fluid or gas or the like |
| FR1518482A (en) * | 1967-04-12 | 1968-03-22 | Seeber Fa Willi | Fan wheel |
| DE3304296A1 (en) * | 1982-03-15 | 1983-09-15 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Axial fan impeller, especially for a cooling fan for water-cooled internal combustion engines |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 13, no. 334 (M-855)(3682) 27. Juli 1989 & JP-A-1 110 898 ( MITSUBISHI ) 27. April 1989 * |
| PATENT ABSTRACTS OF JAPAN vol. 7, no. 159 (M-228)(1304) 13. Juli 1983 & JP-A-58 066 000 ( NISSAN ) 19. April 1983 * |
| SOVIET INVENTIONS ILLUSTRATED Section PQ, Week B27, 15. August 1979 Derwent Publications Ltd., London, GB; Class Q56, AN F8488B/27 & SU-A-623 008 (NAMI CAR MOTOR WORK) 19. Juli 1978 * |
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|---|---|---|---|---|
| DE19929978A1 (en) * | 1999-06-30 | 2001-01-04 | Behr Gmbh & Co | Fan with axial blades, with air guide elements in entry-side region of hub and on induction side of blades |
| DE19929978B4 (en) * | 1999-06-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Fan with axial blades |
| US6382915B1 (en) | 1999-06-30 | 2002-05-07 | Behr Gmbh & Co. | Fan with axial blades |
| US6375427B1 (en) | 2000-04-14 | 2002-04-23 | Borgwarner Inc. | Engine cooling fan having supporting vanes |
| WO2001079704A3 (en) * | 2000-04-14 | 2002-04-04 | Borgwarner Inc | Cooling fan |
| WO2001079704A2 (en) * | 2000-04-14 | 2001-10-25 | Borg Warner Inc. | Cooling fan |
| EP1793125A1 (en) * | 2000-04-14 | 2007-06-06 | Borgwarner, Inc. | Cooling fan |
| EP1795761A1 (en) * | 2000-04-14 | 2007-06-13 | Borgwarner, Inc. | Cooling fan |
| KR100754336B1 (en) * | 2000-04-14 | 2007-08-31 | 보그워너 인코포레이티드 | Cooling fan |
| US6726454B2 (en) | 2001-01-02 | 2004-04-27 | Behr Gmbh & Co. | Fan having axial blades |
| DE102010062301A1 (en) | 2010-12-01 | 2012-06-06 | Behr Gmbh & Co. Kg | Axial |
| WO2012072779A1 (en) | 2010-12-01 | 2012-06-07 | Behr Gmbh & Co. Kg | Axial fan |
| CN103270311A (en) * | 2010-12-01 | 2013-08-28 | 贝洱两合公司 | Axial fan |
| CN103270311B (en) * | 2010-12-01 | 2017-05-31 | 马勒国际公司 | Tube-axial fan |
| USD860427S1 (en) | 2017-09-18 | 2019-09-17 | Horton, Inc. | Ring fan |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4117342C1 (en) | 1992-09-10 |
| EP0515839B1 (en) | 1996-01-17 |
| ES2082264T3 (en) | 1996-03-16 |
| DE59205066D1 (en) | 1996-02-29 |
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