• 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:
    rotary motor rotor. a rotary motor rotor 10 comprises a body 12 comprising an outer surface 18, an inner surface 22, an insert 14 and a fastening element 16. the outer surface 18 comprises three rotor sides 20 arranged in an equilateral triangle shape. the inner surface 22 comprises the positioning portion 24 at the midpoint of each side of rotor 20, the positioning portions 24 together defining a positioning aperture 26. a positioning portion 24 is provided with a first attachment socket 28 extending radially from the inner surface 22 of the body 12, towards the outer surface 18 of the body 12. Cooling channels 30 are provided axially through the body 12 in the region of each apex 31. the insert 14 is provided in the positioning opening 26 and comprises a bearing portion 38 with a second clamping socket 40 extending radially through the insert 14 and in alignment with the first clamping socket 28. the clamping element 16 is provided through the second clamping socket 40 and received in the first clamping socket 28 for attaching insert 14 to body 12.
    公开号:BR112013022934B1
    申请号:R112013022934-9
    申请日:2012-03-05
    公开日:2021-06-22
    发明作者:Christopher John Biddulph；Jonathan Mark Bagnell
    申请人:Uav Engines Ltd.；
    IPC主号:
    专利说明:

    [001] The present invention relates to a rotary motor rotor.
    [002] Rotating internal combustion engines are well known and typically comprise a rotating piston or rotor rotatably mounted within a cavity in a housing or stator. The rotor and cavity walls are shaped so that combustion chambers are formed as the rotor rotates, the cavity walls further being provided with inlet and exhaust ports for air and exhaust gases, respectively. Wankel engines are a particular form of rotary internal combustion engine in which the stator is provided with a two-lobed epitrochoidal bore which forms the cavity and further comprises end plates which form axially spaced end walls enclosing the cavity. The rotor is provided with a body comprising an outer surface comprising three rotor sides of sectional shape generally of equilateral triangle with outwardly curved sides. The rotor is mounted on an eccentric trunnion of a main rod and is geared to rotate planetaryly within the cavity at one third of the rotation of the main rod. The rotor engagement is typically provided by means of an insert received within a positioning opening provided by an inner surface of the body. The insert comprises a bearing portion and an indexing gear, the indexing gear being arranged to engage with a fixed gear supported by one of the end plates of the motor. The engagement of the index gear with the fixed gear restricts the rotor's rotation to one third of that of the main shaft. The insert is required to be securely fastened to the rotor body in order to prevent rotation or axial movement of the insert relative to the rotor body. This can allow prolonged operation of the rotor at high speeds of rotation, such as when employed within rotary engines that can be used in ships, automobiles, aircraft, stationary engines or compressors, for example. The coupling of the insert to the body must also not adversely interfere with the working operation of the chambers formed by the rotating rotor and the cavity.
    [003] According to one aspect of the present invention there is provided a rotary motor rotor comprising: a body comprising: an outer surface comprising three rotor sides arranged in a generally equilateral triangle shape; and an inner surface comprising: a respective positioning portion provided generally at the midpoint of each rotor side, the positioning portions jointly defining at least in part a positioning aperture and a positioning portion being provided with a first attachment socket which extends generally radially from the inner surface of the body, partially toward the outer surface of the body; and a cooling channel provided axially through the body in the region of each apex; an insert provided in the positioning opening and comprising a bearing part and an indexing gear, the bearing part being provided with a second clamping socket extending generally radially across the insert and provided in alignment with the first clamping socket; and a rigid elongate fixture provided through the second fixture socket and at least partially received in the first fixture socket to thereby couple the insert to the body.
    [004] By arranging the fastening sockets and fastening element to extend outward from an external position, rupture of the outer surface of the rotor body can be prevented and thus the risk of forming a leak path of gas between the outer surface and the inner surface of the rotor body is reduced. Another advantage of this arrangement is that the creation of “hot spots” on the outer surface can be reduced. Welding heat cracking of the external surface can also be avoided, as no welding is required on said external surface. There are also no restrictions with respect to the shape or profile of the external surface, but the first fixing socket does not focus on it.
    [005] Preferably, each rotor side of the outer surface of the body is provided with a combustion chamber recess formed in the outer surface and extending partially towards the inner surface and the first attachment socket is arranged further to extend from the inner surface of the body partially towards the respective combustion chamber recess. The recess is arranged to form a combustion chamber between the rotor side and a cavity provided by an external stator into which the rotor is arranged to be housed, in use. Because the first clamping socket extends only partially towards the combustion chamber, the socket and clamping element do not engage the combustion chamber recess. This can provide flexibility in positioning the undercut on the rotor side.
    [006] Preferably, the first attachment socket extends from the inner surface of the body, partially towards the outer surface of the body generally within the region positioned between the respective combustion chamber recess and cooling channel. This can allow the length of the clamping element and thus the strength of the coupling to be maximized, while ensuring that the first and second clamping sockets and clamping element do not impinge on the combustion chamber recess.
    [007] Preferably, a said rigid elongated fixture and first and second fixture sockets are provided on each side of the rotor body, each fixture being received in a respective first and second fixture socket at corresponding positions along the positioning portions of the rotor body. This can improve the engagement between the body and the insert while maintaining rotor balance and allowing stable rotation at high rotation speeds.
    [008] Preferably, each positioning portion is partially circular in shape and the positioning portions together define a positioning opening of substantially circular section. This allows the positioning opening to receive a substantially circular shaped insert and can further improve rotor balance, allowing for stable rotation at high rotational speeds.
    [009] Preferably, each cooling channel is provided between a respective pair of positioning portions, the cooling channels and the insert together forming cooling ducts. Cooling ducts allow air flow to cool the rotor during operation.
    [0010] Preferably, each first and second clamping socket extends generally transversely to the geometric axis of rotation of the rotor at an angle of between 70° to 90° with respect to a tangent to the insert. This can allow for greater flexibility in the placement of each first and second clamping socket, and better manufacturing tolerance during the manufacturing process.
    [0011] Preferably, the rotary engine rotor is for a Wankel engine or compressor.
    [0012] Modalities of the invention will now be described in detail by way of example only, with reference to the accompanying drawings, in which:
    [0013] Figure 1 is a schematic representation in cross section of a rotary motor rotor according to a first embodiment of the invention; Figure 2 is a perspective view of the rotary motor rotor of Figure 1; Figure 3 is a schematic representation in cross section of a rotary motor rotor according to a second embodiment of the invention; Figure 4 is a perspective view of the rotary motor rotor of Figure 3; and Figure 5 is a schematic representation in cross section of a rotary motor rotor according to a third embodiment of the invention.
    [0014] With reference to Figures 1 and 2, a first embodiment of the invention provides a rotary motor rotor 10 comprising a body 12, an insert 14 and rigid elongated fasteners 16.
    [0015] The body 12 comprises an outer surface 18 comprising three rotor sides 20 arranged in a generally equilateral triangle shape. Each side of rotor 20 has outwardly curved shape. The body 12 further comprises an inner surface 22 comprising three positioning portions 24, each positioning portion being provided generally at the midpoint of a respective rotor side 20. The positioning portions 24 together partially define a positioning aperture 26. In this example , each positioning portion 24 is provided with a first attachment socket 28 which extends generally radially from the inner surface 22 partially towards the outer surface 18.
    [0016] The body 12 further comprises three cooling channels 30, a respective cooling channel 30 being provided axially through the body 12 in the region of each vertex 31 of the body 12. Each respective cooling channel 30 is partially cylindrical in shape and provided with cooling fins 32 which are arranged to increase the surface area of said cooling channel 30. Each cooling channel 30 is provided between a respective pair of positioning portions 24 so that the cooling channels and an outer surface 36 of the insert 14 together form cooling ducts 34. Cooling ducts 34 allow cooling air to flow through rotor 10.
    [0017] The insert 14 is provided in the positioning opening 26 and comprises a bearing portion 38 and an indexing gear 50. The indexing gear 50 comprises a machined annular gear and is disposed at an axially end of the rotor 10, as shown in Figure 2. The bearing portion 38 is provided with a second clamping socket 40 which extends generally radially across the insert 14. The insert 14 is arranged within the positioning opening 26 so that the second clamping socket 40 is provided. in alignment with the first clamping socket 28.
    [0018] Each rigid elongated fixture 16 is provided through a respective second fixture socket 40 and is received in a respective first fixture socket 28, to thereby couple insert 14 to body 12. In this example, each fixture 16 comprises a fixing pin. Each clamping pin 16 is a drive fit with respective second 40 and first 28 clamping sockets to provide secure engagement of insert 14 to rotor body 12. Each clamping pin 16 is received in a respective second 40 and first 28 clamping sockets at corresponding positions along the positioning portions 24 of the rotor body 12. This allows stable operation of the rotor at high rotational speeds by maintaining the balance of the rotor 10. In this example, each respective first clamping socket 28, second clamping socket 40 and clamping pin 16 is arranged to extend at an angle of substantially 90° with respect to a tangent to the insert 14. If desired, the respective first clamping socket 28, second clamping socket 40 and clamping pin 16 could extend at other angles, although preferably the clamping pins do not extend at an angle of less than 70° with respect to a tangent to insert 14. Of, each first clamping socket 28 can be positioned anywhere along the inner surface 22, between the cooling ducts 24. This can allow for greater flexibility in the placement of each first and second clamping socket and better manufacturing tolerance during the manufacturing process.
    [0019] The rotor body 12 can be made as a monolithic iron casting, while the insert 14 can be made as a forged part in a suitable bearing steel, or from a bearing steel bar. Locking pins 16 are preferably made of high-grade stainless steel and thus differential expansion between rotor body 12, insert 14 and pins 16 is minimized. To further secure insert 14 to rotor body 12, the head 44 of each locking pin 16 may be welded to insert 14 within a respective round shaped hole 42. It will be appreciated that any differently machined hole may alternatively be used. Excess weld material may subsequently be removed so that the remainder of each head 44 and weld material is flush with the inner surface 46 of insert 14, but it will be appreciated that the removal of excess weld material is not essential.
    [0020] In use, the rotor 10 is mounted within a cavity (not shown) in a stator (not shown) in an eccentric trunnion of a main shaft (not shown). The annular gear 50 is arranged to engage with an external fixed gear (not shown) in a planetary fashion and said engagement ensures that the rotor 10 rotates at one third of the rotation of the main shaft. The rotor 10 and cavity walls are shaped so that combustion chambers are formed as the rotor rotates, the cavity walls further being provided with inlet and exhaust ports (not shown) for air and exhaust gases, respectively. . By arranging each first clamping socket 28, second clamping socket 40 and clamping pin 16 to extend outwardly from an external position, rupture of the outer surface 18 of the body 12 of the rotor 10 is prevented. In this way, the risk of forming a gas leak path between the outer surface 18 and the inner surface 22 of the rotor body 12 is reduced. Another advantage of this arrangement is that the creation of “hot spots” on the outer surface can be reduced. Welding heat cracking of the external surface can also be avoided, as no welding is required on said external surface. There is also no restriction with respect to the shape or profile of the outer surface 18, as the first fastening socket 28 does not focus on it.
    [0021] A second embodiment of the invention provides a rotary motor rotor 60 for a Wankel motor, as shown in figures 3 and 4. The rotor 60 of this mode is similar to the rotor 10 of the first mode, with the following modifications. The same reference numbers are kept for the corresponding characteristics.
    [0022] In this embodiment, the body 12 of the rotor 60 is additionally provided with three combustion chamber recesses 62, one on each side of the rotor 20. Each combustion chamber recess 62 comprises a combustion pocket formed in the outer surface 18 of a respective rotor side 20. Each combustion bladder 62 extends generally around the midpoint of the respective rotor side and extends partially towards the inner surface 22 of said rotor side. In use, the combustion bag 62 is arranged to form a combustion chamber between the rotor side 20 and a cavity provided by an external stator (not shown), within which the rotor is arranged to be housed. In this embodiment, each first attachment socket 28 extends from the inner surface 22 of the body 12, partially towards the outer surface 18 of the body generally towards the region positioned between the respective combustion bag 62 and cooling channel 30 This allows the length of the clamping pin 16 and thus the coupling strength of the insert 14 to the body 12 to be maximized, while ensuring that the first 28 and second 40 clamping sockets and clamping pin 16 do not impact the combustion bag 62 .
    [0023] Each vertex 31 of body 12 is further provided with a sealing strip socket 64. Each sealing strip socket 14 is arranged to receive a sealing strip (not shown) which, in use, forms a seal between the rotor 10 and a wall of the motor cavity provided by the external stator.
    [0024] A third embodiment of the invention provides a rotary engine rotor 70 for a Wankel engine, as shown in Figure 5. The rotor 70 of this embodiment is similar to the rotor 60 of the second mode, with the following modifications. The same reference numbers are kept for corresponding characteristics.
    [0025] In this embodiment, the body 12 is provided with a first clamping socket 72, a second clamping socket 40 and a clamping pin 74 generally at the midpoint of each side of rotor 20. Each first clamping socket 72 is arranged to extend generally radially from the inner surface 22 of the body 12 partially towards the respective combustion bladder 62. Each attachment pin 74 is provided through a respective second attachment socket 40 and is received in a respective first attachment socket. attachment 72, to thereby couple insert 14 to body 12. Each first attachment socket 72 and respective attachment pin 74 do not fall on the combustion bag 62. In this mode, because each first attachment socket 72 extends only partially in the direction for the combustion bag 62, each fixing pin 74 and each first fixing socket 72 do not engage the combustion bag. An improvement in the flexibility of the positioning and size of the pocket 62 on the rotor side 20 can thus be obtained.
    权利要求:
    Claims (8)
    [0001]
    1. Rotary motor rotor, characterized in that it comprises: a one-piece body (12) comprising: an outer surface (18) comprising three rotor sides (20) arranged in an equilateral triangle shape; and an inner surface (22) comprising: a respective positioning portion (24) provided at the midpoint of each rotor side (20), the positioning portions jointly defining at least in part a positioning aperture (26) and a portion positioner being provided with a blind hole (28) which extends radially from the inner surface of the body, partially towards the outer surface (18) of the body; and the cooling channel (30) provided axially through the body in the region of each apex; an insert (14) provided in the positioning opening (26) and comprising a bearing part (38) and an indexing gear (50), the bearing part being provided with a clamping socket (40) extending radially therethrough. of the insert and provided in alignment with the blind hole; and a rigid elongated fixture (16) provided through the fixture socket (40) and at least partially received in the blind hole to thereby couple the insert to the body.
    [0002]
    2. Rotor according to claim 1, characterized in that each rotor side (20) of the outer surface of the body (12) is provided with a combustion chamber recess (62) formed on the outer surface and partially extending towards the inner surface and the blind hole (28) is further arranged to extend from the inner surface of the body partially towards the respective combustion chamber recess.
    [0003]
    3. Rotor according to claim 2, characterized in that the blind hole (28) extends from the inner surface of the body, partially towards the outer surface of the body within the region positioned between the respective recess of combustion chamber (62) and cooling channel.
    [0004]
    4. Rotor according to any one of claims 1 to 3, characterized in that a rigid elongated fastening element (16), blind hole and fastening socket are provided on each side of the rotor body, each fastening element being received in a respective blind hole and fixing socket at corresponding positions along the positioning portions of the rotor body.
    [0005]
    5. Rotor according to any one of claims 1 to 4, characterized in that each positioning portion is partially circular in shape and the positioning portions together define a positioning opening of circular section.
    [0006]
    6. Rotor according to any one of claims 1 to 5, characterized in that each cooling channel (30) is provided between a respective pair of positioning portions, the cooling channels and the insert jointly forming cooling ducts.
    [0007]
    7. Rotor according to any one of claims 1 to 6, characterized in that each blind hole and fastening socket extends transversely to the geometric axis of rotation of the rotor at an angle between 70° to 90° with respect to a tangent to the insert.
    [0008]
    8. Rotor according to any one of claims 1 to 7, characterized in that the rotary engine rotor is for a Wankel engine or compressor.
    类似技术:
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    同族专利:
    公开号 | 公开日
    HK1191077A1|2014-07-18|
    WO2012120285A2|2012-09-13|
    BR112013022934A2|2016-12-06|
    KR20140027144A|2014-03-06|
    IL228806A|2017-05-29|
    RU2013145372A|2015-04-20|
    ES2606170T3|2017-03-23|
    CN103518036B|2016-11-09|
    EP2497902A1|2012-09-12|
    IL228806D0|2013-12-31|
    RU2608848C2|2017-01-25|
    US9518658B2|2016-12-13|
    US20140069273A1|2014-03-13|
    PL2497902T3|2017-06-30|
    EP2497902B1|2016-09-07|
    CN103518036A|2014-01-15|
    WO2012120285A3|2013-02-21|
    KR101934131B1|2018-12-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2106280A1|1971-02-10|1972-08-17|Karl Schmidt Gmbh, 7107 Neckarsulm|Light metal pistons for rotary piston internal combustion engines|
    US3942918A|1974-11-21|1976-03-09|Curtiss-Wright Corporation|Rotor and gear assembly for rotary mechanisms|
    EP0068104B1|1981-06-20|1985-01-16|Norton Motors Limited|Air or charge cooled rotor for a rotary engine|
    GB8528575D0|1985-11-20|1985-12-24|Norton Motors Ltd|Rotor|
    US4898522A|1988-04-07|1990-02-06|Teledyne Industries, Inc.|System for cooling the rotary engine rotor|
    IL170165A|2005-08-08|2010-12-30|Haim Rom|Wankel and similar rotary engines|AT511636B1|2011-07-07|2015-07-15|Avl List Gmbh|ROTARY PISTON MACHINE WITH A PISTON ASSEMBLY, VEHICLE WITH THIS ROTATION PISTON MACHINE AND A MANUFACTURING PROCESS FOR THE PISTON ASSEMBLY|
    US9027345B2|2011-07-28|2015-05-12|Pratt & Whitney Canada Corp.|Compound engine system with rotary engine|
    US10557407B2|2011-07-28|2020-02-11|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with pilot subchamber|
    US8597006B2|2011-07-28|2013-12-03|Pratt & Whitney Canada Corp.|Apex seal for rotary internal combustion engine|
    US8656888B2|2011-07-28|2014-02-25|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with variable volumetric compression ratio|
    US10544732B2|2011-07-28|2020-01-28|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with removable subchamber insert|
    US10041402B2|2016-05-12|2018-08-07|Pratt & Whitney Canada Corp.|Internal combustion engine with split pilot injection|
    US8893684B2|2011-07-28|2014-11-25|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with exhaust purge|
    US10344870B2|2011-07-28|2019-07-09|Pratt & Whitney Canada Corp.|Apex seal arrangement for rotary internal combustion engine|
    US8985085B2|2011-07-28|2015-03-24|Pratt & Whitney Canada Corp.|Oil seal arrangement for rotary internal combustion engine|
    US8707929B2|2011-07-28|2014-04-29|Pratt & Whitney Canada Corp.|Multi-rotor rotary engine architecture|
    US9038594B2|2011-07-28|2015-05-26|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with pilot subchamber|
    US9366138B2|2011-07-28|2016-06-14|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with phasing gear|
    US8851870B2|2011-07-28|2014-10-07|Pratt & Whitney Canada Corp|Gas seal arrangement for rotary internal combustion engine|
    US8967988B2|2011-07-28|2015-03-03|Pratt & Whitney Canada Corp.|Apex and face seals with rotary internal combustion engine|
    US9528434B1|2011-07-28|2016-12-27|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with pilot subchamber|
    US9121277B2|2012-02-06|2015-09-01|Pratt & Whitney Canada Corp.|Rotary internal combustion engine with cooled insert|
    US8905736B2|2012-03-22|2014-12-09|Pratt & Whitney Canada Corp.|Port for rotary internal combustion engine|
    US9194232B2|2012-07-20|2015-11-24|Pratt & Whitney Canada Corp.|Compound cycle engine|
    US10107195B2|2012-07-20|2018-10-23|Pratt & Whitney Canada Corp.|Compound cycle engine|
    US9512721B2|2012-07-20|2016-12-06|Pratt & Whitney Canada Corp.|Compound cycle engine|
    US9926843B2|2012-07-20|2018-03-27|Pratt & Whitney Canada Corp.|Compound cycle engine|
    US9593580B2|2012-11-23|2017-03-14|Pratt & Whitney Canada Corp.|Wankel engine rotor|
    GB201313824D0|2013-08-01|2013-09-18|Orbital Power Ltd|A Rotary Engine|
    GB2524527A|2014-03-25|2015-09-30|Gilo Ind Res Ltd|Cooled rotary engine rotor|
    ES2657164T3|2015-02-11|2018-03-01|Uav Engines Ltd|Rotary motor rotor|
    US10082029B2|2016-07-08|2018-09-25|Pratt & Whitney Canada Corp.|Internal combustion engine with rotor having offset peripheral surface|
    US10145291B1|2017-10-10|2018-12-04|Pratt & Whitney Canada Corp.|Rotary engine and method of combusting fuel|
    US10801394B2|2017-11-29|2020-10-13|Pratt & Whitney Canada Corp.|Rotary engine with pilot subchambers|
    JP2020012411A|2018-07-17|2020-01-23|マツダ株式会社|Rotary piston engine|
    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-02| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-05-25| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11157738.3|2011-03-10|
    EP11157738.3A|EP2497902B1|2011-03-10|2011-03-10|Rotary Engine Rotor|
    PCT/GB2012/050480|WO2012120285A2|2011-03-10|2012-03-05|Rotary engine rotor|
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