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81. 发明专利

GB2176243B ROTARY GAS COMPRESSOR 未知
公开(公告)号：GB2176243B
公开(公告)日：1988-11-02
申请号：GB8608506
申请日：1986-04-08
申请人： VILTER MANUFACTURING CORP
发明人： KOCHER ERICH J
IPC分类号： F04C18/52 , F04C18/16 , F04C18/20 , F04C18/30 , F04C18/54 , F04C28/12 , F04C29/08
摘要： A rotary screw gas compressor for a refrigeration system comprises a motor-driven single main rotor having helical grooves and mounted for rotation in a rotor bore in the compressor housing and a pair of star-shaped gate rotors rotatably mounted in the housing and engageable with the helical grooves to define a plurality of compression chambers. A suction slide valve member is slidably positionable (between full load and unload positions) to control where low pressure uncompressed refrigerant gas from a suction port is admitted to the compression chambers to thereby function as a suction bypass to control compressor capacity. A discharge slide valve member is slidably positionable (between minimum and adjusted volume ratio positions) to control where high pressure compressed refrigerant gas is expelled from the compression chambers to a discharge port to thereby control the volume ratio and thereby the input power to the compressor. Both slide valve members are disposed in side-by-side sliding relationship in a common recess in the compressor housing which extends alongside and communicates with the rotor bore and each has a face which is complementary to and confronts the main rotor surface in sliding sealed relationship. The slide valve members are independently movable by separate piston-cylinder type hydraulic actuators. A control system responsive to compressor capacity and volume ratio operates the actuators to position the slide valve members to cause the compressor to operate at a predetermined capacity and minimum power input. The control system includes sensing devices to detect the position of the slide valve members.

82. 发明专利

FR2582743A1 未知
公开(公告)号：FR2582743A1
公开(公告)日：1986-12-05
申请号：FR8606479
申请日：1986-05-05
申请人： VILTER MANUFACTURING CORP
发明人： KOCHER ERICH J
IPC分类号： F04C18/52 , F04C18/16 , F04C18/20 , F04C18/30 , F04C18/54 , F04C28/12 , F04C29/08
摘要： A rotary screw gas compressor for a refrigeration system comprises a motor-driven single main rotor having helical grooves and mounted for rotation in a rotor bore in the compressor housing and a pair of star-shaped gate rotors rotatably mounted in the housing and engageable with the helical grooves to define a plurality of compression chambers. A suction slide valve member is slidably positionable (between full load and unload positions) to control where low pressure uncompressed refrigerant gas from a suction port is admitted to the compression chambers to thereby function as a suction bypass to control compressor capacity. A discharge slide valve member is slidably positionable (between minimum and adjusted volume ratio positions) to control where high pressure compressed refrigerant gas is expelled from the compression chambers to a discharge port to thereby control the volume ratio and thereby the input power to the compressor. Both slide valve members are disposed in side-by-side sliding relationship in a common recess in the compressor housing which extends alongside and communicates with the rotor bore and each has a face which is complementary to and confronts the main rotor surface in sliding sealed relationship. The slide valve members are independently movable by separate piston-cylinder type hydraulic actuators. A control system responsive to compressor capacity and volume ratio operates the actuators to position the slide valve members to cause the compressor to operate at a predetermined capacity and minimum power input. The control system includes sensing devices to detect the position of the slide valve members.

83. 发明专利

GB2036874B ROTARY POSITIVE-DISPLACEMENT FLUID-MACHINES 未知
公开(公告)号：GB2036874B
公开(公告)日：1983-01-19
申请号：GB7937491
申请日：1979-10-30
申请人： UNISCREW LTD
IPC分类号： F04C18/52 , F01C1/08 , F01C1/16 , F01C3/02 , F01C3/08 , F04C18/54 , F01C3/00 , F01C21/08

84. 发明专利

DE2913608C2 未知
公开(公告)号：DE2913608C2
公开(公告)日：1982-10-14
申请号：DE2913608
申请日：1979-04-02
申请人： WILLIMCZIK, WOLFHART, DIPL.-PHYS., 8037 OLCHING, DE
发明人： WILLIMCZIK, WOLFHART, DIPL.-PHYS., 8037 OLCHING, DE
IPC分类号： F04C3/06 , F01C3/06 , F04C18/34 , F04C18/54

85. 发明专利

GB2036874A ROTARY POSITIVE-DISPLACEMENT FLUID-MACHINES 未知
公开(公告)号：GB2036874A
公开(公告)日：1980-07-02
申请号：GB7937491
申请日：1979-10-30
申请人： UNISCREW LTD
IPC分类号： F04C18/52 , F01C1/08 , F01C1/16 , F01C3/02 , F01C3/08 , F04C18/54 , F01C3/00 , F01C21/08

86. 发明专利

GB1532395A APEX SEALS FOR SLANT AXIS ROTARY FLUID-MACHINES 未知
公开(公告)号：GB1532395A
公开(公告)日：1978-11-15
申请号：GB852377
申请日：1977-03-01
申请人： CATERPILLAR TRACTOR CO
IPC分类号： F04C18/54 , F01C3/06 , F01C19/08 , F01C21/08 , F01C19/02
摘要： 1532395 Rotary positive-displacement fluidmachines CATERPILLAR TRACTOR CO 1 March 1977 [2 July 1976] 08523/77 Heading F1F An apex seal 52, Fig. 1, in a rotor 30 for a machine of the nutating piston, or "slant axis", type has a tapered cross-section, Fig. 4, so as to minimize leakage around the sides of the seal when the seal tilts towards either of the side walls of the groove 48 therefor. The portion of the seal adjacent its axially innermost edge may have parallel sides, Fig. 6 (not shown). The radially inner portion of the seal may comprise a leg 60 accommodated by a matching portion 50 of the groove 48, Fig. 5. Grooves 114 may be formed in the seal to give the working fluid access to the axially inner section of the groove, which may contain a biasing spring 116.

87. 发明专利

GB1501846A THRUST BEARINGS FOR SLANT AXIS ROTARY FLUID-MACHINES 未知
公开(公告)号：GB1501846A
公开(公告)日：1978-02-22
申请号：GB3020376
申请日：1976-07-20
申请人： CATERPILLAR TRACTOR CO
IPC分类号： F04C3/06 , F01C3/06 , F01C9/00 , F04C18/54 , F16C3/04
摘要： 1501846 Rotary positive displacement fluid machines CATERPILLAR TRACTOR CO 20 July 1976 [8 Dec 1975] 30203/76 Heading F1F In an inclined axis nutating disc machine, the disc-rotor is mounted on the shaft 14 by means of a pair of elements 16, 60 defining the inclined axis between which are clamped a plurality of thrust collar segments 54, for engagement in an annular groove 52 in the rotor, the elements 16, 60 being secured against axial and rotational movement relative to the shaft. The members 16, 60 have annular projections 34, 68 engaging in corresponding recesses 58, 70 for keying purposes, or alternatively, pins are located in aligned bores in 16, 60 and segments 54 Fig. 4 (not shown). Members 16, 60 have splines to prevent their rotation and a sleeve 72 holds the assembly against a shoulder 30 on shaft 14.

88. 发明专利

GB1499640A SLANT AXIS ROTARY FLUID-MACHINES 未知
公开(公告)号：GB1499640A
公开(公告)日：1978-02-01
申请号：GB2473076
申请日：1976-06-15
申请人： CATERPILLAR TRACTOR CO
IPC分类号： F04C3/06 , F01C3/06 , F01C9/00 , F03C2/30 , F04C18/54
摘要： 1499640 Rotary positive displacement device CATERPILLAR TRACTOR CO 15 June 1976 [23 Oct 1975] 24730/76 Heading F1F In a slant axis mechanism, such as a pump, engine or compressor, comprising a housing 10, Fig. 1 a shaft 22 supported by journal bearings 20 and a rotor 32 supported by journal bearings 30 and thrust bearings 28 on the shaft 22, the rotor comprises a hub having a part spherical surface upon which is formed raised bearing areas 60 Fig. 1 and 2 which slidingly contact a spherical surface 16 of the housing 10. The raised bearing areas 60 may be integral with the rotor hub or formed by securing an overlay of bearing material such as bronze on the hub. The bearing areas 60 are preferably disposed between and spaced apart from compression seals 52 and oil seals 56 and the load on the bearing areas may be varied by altering the position of the shaft 22 for which reason the bearings 20 may be eccentrically mounted in a bearing cage 76 Fig. 5 ecccentrically mounted in a further bearing cage 70. The rotor may be of steel or aluminium and in the latter case the housing may be of steel. An internal ring gear 42 meshes with a timing gear 44 and piston seals 48, peripheral seals 46 and apex seals 50 are provided. The end of the shaft 22 is supported by thrust bearings 36.

89. 发明专利

DE2716829A1 未知
公开(公告)号：DE2716829A1
公开(公告)日：1978-01-05
申请号：DE2716829
申请日：1977-04-15
申请人： CATERPILLAR TRACTOR CO
发明人： RITCHIE JAMES ALEXANDER
IPC分类号： F04C18/54 , F01C3/06 , F01C19/08

90. 发明专利

GB1491394A SEAL LUBRICATION IN A ROTARY FLUID-MACHINE 未知
公开(公告)号：GB1491394A
公开(公告)日：1977-11-09
申请号：GB1665776
申请日：1976-04-23
申请人： CATERPILLAR TRACTOR CO
IPC分类号： F02B53/00 , F01C3/06 , F01C21/04 , F04C3/06 , F04C18/54 , F16N1/00
摘要： 1491394 Rotary positive-displacement fluidmachines CATERPILLAR TRACTOR CO 23 April 1976 [12 Sept 1975] 16657/76 Heading F1F In a machine that may be adapted to operate as an I.C. engine, a compressor, or a pump, a nutating rotor 20 with an annular flange 30 is mounted rotatively on an oblique portion 40 of a rotary power-output, or input, shaft 36 and has an internal gear 50 meshing with a fixed gear 52, and annular seals 24, 26, 32 and apex seals 34 are lubricated by way of slots 54, 56, 60, which contain porous inserts made of e.g. a sintered metal, and acting as wicks.

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