• 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:
    The invention relates essentially to a device 20 for filtering and supplying oil for supplying a first oil pump 23 and a second oil pump 24 of an aircraft engine, the pumps sucking oil from a common oil pan, characterized in that the device comprises: a housing 51 with a lower portion 30 and an upper portion 22 - a first port 49 for the supply of the first pump 23 - a second port 50 for the supply of the second pump 24, wherein the housing 51 comprises: - a first chamber 52, the oil through a first sieve 21 is supplied and which supplies the first pump 23 via the first port 49 with oil - a second chamber 53, the oil is supplied through a second sieve 31, and the second pump 24 via the second port 50 with oil supplied - a means for isolation 43 of the first chamber 52 of the second chamber 53rd
    公开号:AT510460A1
    申请号:T1480/2011
    申请日:2011-10-12
    公开日:2012-04-15
    发明作者:
    申请人:Motorisations Aeronautiques；
    IPC主号:
    专利说明:

    1
    Societe de Motorizations A ronautiques
    DESCRIPTION
    Device for filtering and supplying oil for supplying two oil pumps of a Fiugmotors
    TECHNICAL FIELD OF THE INVENTION
    The present invention relates to a device for filtering and supplying oil for the supply of two oil pumps of an aircraft engine. The technical field of the invention is that of the aircraft engines, and in particular that of the oil pumps, which are used for example for the lubrication and cooling of certain engine parts.
    The present invention has a device for filtering and supplying oil for a connection of two oil pumps to the object that suck the oil from the same oil pan. This device is particularly suitable for a connection of two pumps with different flow rates. The invention also relates to a motor with such a device.
    TECHNICAL BACKGROUND OF THE INVENTION
    Typically, an oil pump of an engine sucks the oil contained in the oil pan through a suction head and sends it into a circuit, eg. B. the lubrication circuit of an engine. The oil sump also cooperates with recirculation means, which allow the recirculation of the excess oil and the re-supply to the sump, so that the oil can be sucked in again by the pump. The suction head plays the role of the oil filter; It filters the impurities of the oil so that they can not penetrate into the oil pump. He is immersed in the oil pan.
    Societe de Motorizations Aeronautiques * * · 2 "* .........
    Some engines, such as the SMA SR305-230 engine, are equipped with a combination of two pumps for drawing oil from one and the same sump. Each pump is in communication with a circuit; it is z. B. in the engine SMA SR305-230 to a lubrication circuit and a cooling circuit. Typically, the oil enters through a sieve in the suction head in the oil pan, where it is sucked by the two pumps.
    Figure 1 shows an exploded view of a device 1 for filtering and supplying oil for a connection of two pumps according to the prior art. The device 1 comprises a housing 12 which consists of a lower portion 10 and an upper portion 11. The lower portion 10 has an opening in which a circular screen 13 is arranged. The upper portion 11 has a first opening 14 and a second opening 15 into which a first nozzle 16 and a second nozzle 17 are inserted. The first port 16 and the second port 17 are connected to the two pumps. The oil enters the housing 12 through the screen 13. It is sucked in there by the two pumps.
    Such a device proves to be satisfactory when the two pumps operate with the same flow rates. Otherwise, the higher-capacity pump will interfere with the lower-capacity pump, resulting in a change in the capacity of the lower-capacity pump. This results in a dry running of the pump with the lower flow rate and possibly the destruction of the engine. Such a problem occurs today in certain engines in which the delivery rate of the pump associated with the lubrication circuit and the pump associated with the refrigeration cycle are different.
    GENERAL DESCRIPTION OF THE INVENTION
    The object of the invention provides a solution to the problem described above by a device is presented, thanks to the pump with the larger capacity does not interfere with the pump with the lower flow rate.
    Societe de Motorizations Aeronautiques
    In order to achieve this, the present invention proposes to modify the structure of the suction head by dividing it by a dense wall into two chambers. Each chamber has a sieve through which the oil enters. Each pump is then connected to a chamber from which it sucks the oil necessary for its function. Advantageously, the size of each sieve is calculated so that it is adapted to the flow rate with which its associated pump works. Thus the intake flows of the two pumps do not influence each other.
    The invention therefore relates essentially to a device for filtering and supplying oil for supplying a first oil pump and a second oil pump of an aircraft engine, the pumps sucking oil from a common oil pan, characterized in that the device comprises: - a housing with a lower portion and an upper portion - a first port for the supply of the first pump - a second port for the supply of the second pump, the housing comprising - a first chamber, the oil is supplied through a first sieve, and the first pump is supplied with oil via the first port - a second chamber supplied with oil through a second screen and providing oil to the second pump via the second port - means for isolating the first chamber from the second chamber.
    In addition to the main features mentioned in the preceding paragraph, a device according to the invention may have one or more of the following additional features, individually or in any technically feasible combination: the first pump cooperates with a cooling circuit of the engine and the second pump a lubrication circuit of the engine together
    Societe de Motorisations Aeronautiques ** · * ································································································································································································································ arranged and the second sieve is arranged at the lower portion of the housing - the means for isolation is a dense partition, in particular a partition made of Inox - the first sieve and the second sieve have a common central axis which is perpendicular to the planes which the first sieve and the second sieve comprise - the first sieve is connected to the cooling circuit and the second sieve to the lubricating circuit - the capacity of the first pump is between 60 L / min and 80 L / min, and the capacity of the second pump is between 40 L / min and 60 L / min - the diameter of the first sieve is between 69.5 mm and 70.5 mm, and the diameter of the second sieve is between 64.5 and 65.5 mm - the upper portion of the housing carries a lid on which the first sieve is mounted - the lid covers an opening in the upper portion of the housing in the region of the first chamber.
    Moreover, the invention relates to a motor comprising an inventive device for filtering and supplying oil.
    The invention and its various applications will be better understood upon review of the following description and the study of the accompanying drawings.
    Societe de Motorizations Aeronautiques 5
    BRIEF DESCRIPTION OF THE FIGURES
    [0013] The figures are to be understood only as transducers and are not intended to limit the invention in any way. 1 shows, as already described above, an exploded view of a device for filtering and supplying oil according to the prior art, in FIG. 2 a perspective view of a device according to an embodiment of the invention with regard to a connection of two oil pumps, in Figure 3 is another perspective view of the elements aüs figure 2 - in Figure 4 is an exploded view of the device of Figure 2
    DETAILED DESCRIPTION OF AT LEAST ONE EMBODIMENT OF THE INVENTION
    Unless otherwise stated, the same elements in the different figures are designated by the same reference numerals.
    Figures 2 and 3 show a first and a second perspective view of a device 20 according to an embodiment of the invention with respect to a connection of a first oil pump 23 with a second oil pump 24. Figure 2 shows the device 20 in top view , It can be seen that at the level of an upper portion 22 of the device, a first sieve 21 is installed. FIG. 3 shows the device 20 in a view from below. It can be seen that a second screen 31 is installed on a lower portion 30 of the device.
    Societe de Motorisations Aeronautiques • # * ··· * *· «• ···· *« «« ······ · • · · 4 «t * • · · · * · · · 6" ... .......
    FIG. 4 shows the device 20 in an exploded view. The device comprises a housing 51 consisting of a lower portion 30 and an upper portion 22. The upper portion 22 has a first opening 47 and a second opening 48. In the first opening 47, a first nozzle 49 is inserted, and in the second opening 48, a second nozzle 50 is inserted. The first port 49 is connected to the first pump 23 and the second port 50 to the second pump 24. The lower portion 30 of the housing 51 has an opening in which a screen 31 is installed.
    A partition wall 43 in L-shape separates the housing 51 into a first chamber 52 and a second chamber 53. The partition 43 is sealed and is advantageously made of Inox. It is preferably welded simultaneously with the upper portion 22 and the lower portion 30. The partition wall 43 is installed so that the oil flowing through the strainer 31 is completely discharged into the chamber 53. The upper portion 22 of the housing 51 is provided with an opening 46. The opening 46 is located on the side of the chamber 52. Above the upper portion 22 of the housing 51, a lid 44 is attached. The lid 44 has an opening in which a first sieve 21 is arranged. Advantageously, the first sieve 21 and the second sieve 31 have one and the same central axis 41 which is perpendicular to the planes containing the first sieve 21 and the second sieve 31, allowing the occurrence of the flow rate change phenomenon of the housing 51 to be maximized to delay. The cover 44 covers the opening 46. Thanks to this provision, the oil flowing through the first sieve 21 discharges completely into the first chamber 52.
    In a second embodiment of the invention, the screen 21 is placed directly on the upper portion 22 of the housing 51, above the first chamber 52. In a third embodiment of the invention, the screen 21 on the lower portion 30 of the housing 51 on the Side of the first chamber 52 installed. Nevertheless, the advantage of the described embodiment is as follows: the arrangement of the second screen 31 under the first screen 21 will make flow change in the second chamber 53 less likely than in the first chamber 53.
    Societe de Motorisations Aeronautiques The device 20 is located in an oil pan, immersed in the Öt. Thus, oil enters the first chamber 52 through the first screen 21, and into the second chamber 53 through the second screen 31. In the first chamber 52, the oil is drawn in via the first port 49 through the first oil pump 23. In the second chamber 53, the oil is sucked in via the second port 50 through the second oil pump 24. Thus, the intake flows of the first oil pump 23 and the second oil pump 24 are independent; the pumps are not affected.
    In the case of a flow change, it is more important to protect the lubrication circuit of an aircraft engine as the cooling circuit. In fact, overheating of the engine may be manually corrected by the pilot of an aircraft, while poor lubrication may result in destruction of the engine. Thus, the first oil pump 23 is advantageously connected to a cooling circuit of an engine, and the second oil pump 24 to a lubrication circuit of the engine. In fact, by this division, in case of a flow change, oil still enters the second chamber 53 and is sucked in by the second oil pump 24 because the second screen 31, allowing oil to enter the second chamber 53, in the lower portion 30 of the housing 51 is arranged.
    Advantageously, the diameters of the first sieve 21 and the second sieve 31 are adapted to the supply of the first oil pump 23 and the second oil pump 24. In fact, the diameters of the screens affect the possible tilt angles of the engine: the smaller the diameters of the screens are, the greater the possible tilt angle. Thus, the device of the present invention described above by way of example may present a dual suction suction head which permits lubrication of the engine with a reduced oil volume by half compared to the actual volume of the oil pan, while allowing tilt angles between -18 ° and + 22 °.
    权利要求:
    Claims (11)
    [1]
    1. Apparatus (20) for filtering and supplying oil for supplying a first oil pump (23) and a second oil pump (24) of an aircraft engine, wherein the pumps suck the oil from a common oil pan characterized in that the device comprises: - a housing (51) having a lower portion (30) and an upper portion (22) - a first port (49) for supplying the first pump (23) - a second port ( 50) for supplying the second pump (24), and wherein the housing comprises: - a first chamber (52) supplied with oil through a first screen (21) and the first pump (23) via the first port (49) supplied with oil - a second chamber (53), which is supplied with oil through a second sieve (31) and which supplies the second pump (24) with oil via the second port (50) - a means for isolation ( 43) of the first chamber (52) of the second chamber - (53).
    [2]
    2, Vorichtung (20) according to claim 1, characterized in that the first pump (23) with a cooling circuit of the engine and the second pump (24) cooperates with a lubrication circuit of the engine.
    [3]
    3. Device (20) according to one of the preceding claims, characterized in that the first sieve (21) in the region of the upper portion (22) of the housing (51) is arranged *, and the second sieve (31) at the lower portion ( 30) of the housing (51) is arranged.


    [4]
    4. Device (20) according to any one of the preceding claims, characterized in that the means for isolation (43) is a dense partition, in particular a partition made of Inox
    [5]
    5. Device (20) according to one of the preceding claims, characterized in that the first sieve (21) and the second sieve (31) have a common central axis which is perpendicular to the planes which the first sieve (21) and the second sieve (31).
    [6]
    6. Device (20) according to any one of the preceding claims and according to claim 2, characterized in that the first sieve (21) is connected to the cooling circuit and the second sieve (31) is connected to the lubrication circuit.
    [7]
    7. Device (20) according to one of the preceding claims, characterized in that the delivery rate of the first pump (23) is between 60 L / min and 80 L / mrn, and that the delivery rate of the second pump (24) is between 40 L / min and 60 L / min.
    [8]
    8. Device (20) according to one of the preceding claims, characterized in that the diameter of the first sieve (21) is between 69.5 mm and 70.5 mm, and the diameter of the second sieve (31) between 64.5 and 65.5 mm.
    [9]
    9. Device (20) according to one of the preceding claims, characterized in that the upper portion (22) of the housing (51) carries a cover (44) on which the first sieve (21) is mounted.
    [10]
    10. Device (20) according to one of the preceding claims, characterized in that the cover (44) covers an opening (46) in the upper portion (22) of the housing (51) in the region of the first chamber (52).
    [11]
    11. An engine of an aircraft, characterized in that it comprises a device (20) according to one of the preceding claims.

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    同族专利:
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    US20120085689A1|2012-04-12|
    US8734642B2|2014-05-27|
    AT510460B1|2013-04-15|
    FR2965865B1|2016-12-30|
    CN102444644A|2012-05-09|
    CN102444644B|2015-11-25|
    DE102011115026A1|2012-04-26|
    FR2965865A1|2012-04-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2415198B1|1978-01-19|1982-11-19|Honda Motor Co Ltd|
    DE2824415C2|1978-06-03|1987-05-14|Volkswagen Ag|
    JPH0670367B2|1985-10-22|1994-09-07|スズキ株式会社|Lubricating oil suction device for four-cycle engine|
    JPH0658302A|1992-08-12|1994-03-01|Yamashin Kogyo Kk|Filter with accumulator function|
    US5535588A|1994-05-06|1996-07-16|Dana Corporation|Filter arrangement for single-acting telescopic hydraulic cylinders|
    CN2316497Y|1998-01-09|1999-04-28|彭宝珠|Oil filter base|
    GB2351322A|1999-06-23|2000-12-27|Concentric Pumps Ltd|Pump housing for a coolant pump and a lubricant pump|
    US7985283B2|2008-04-09|2011-07-26|GM Global Technology Operations LLC|System for de-aerating a hydraulic fluid in a transmission|
    DE102008027662A1|2008-06-10|2009-12-17|Ibs Filtran Kunststoff- / Metallerzeugnisse Gmbh|Oil pan with oil filter|US11078958B1|2020-08-24|2021-08-03|Apq Development, Llc|Compression limiter|
    US11028741B1|2020-08-24|2021-06-08|Apq Development, Llc|Oil pick-up assembly|
    USD916152S1|2020-08-24|2021-04-13|Apq Development, Llc|Compression limiter|
    USD921045S1|2020-08-24|2021-06-01|Apq Development, Llc|Oil pick-up assembly|
    法律状态:
    2017-06-15| MM01| Lapse because of not paying annual fees|Effective date: 20161012 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1058297A|FR2965865B1|2010-10-12|2010-10-12|OIL FILTERING AND DISPENSING DEVICE FOR SUPPLYING TWO OIL PUMPS TO AN AIRCRAFT ENGINE|
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