With Plural Working Fluid Inlet Or Outlet Passages Patents (Class 418/15)
  • Patent number: 10696280
    Abstract: A mechanical automotive vacuum pump includes a housing with a housing cylindrical bearing surface. A pumping chamber is arranged in the housing. A pump rotor which includes a rotor body having a rotor body bearing section and a chamber section is rotatably supported by the housing. A radial vane slit is arranged at the chamber section. A rotor body cylindrical bearing surface is arranged at the rotor body bearing section. The rotor body bearing section includes a circular lubrication ring groove. A radially shiftable pump vane is supported in the radial vane slit. A friction bearing is defined by the rotor body cylindrical bearing surface and the housing cylindrical bearing surface. The housing cylindrical bearing surface includes a lubrication inlet opening which lies in a same transversal plane as and opposite to the circular lubrication ring groove. The lubrication inlet opening is directly connected to a lubricant pump connector.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: June 30, 2020
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Giorgio Peroni, Raffaele Squarcini, Giacomo Armenio
  • Patent number: 10662945
    Abstract: A scroll type compressor includes a fixed scroll including a base plate and a scroll wall. The base plate has a main discharge port, a sub-discharge port, an injection port and a valve. The valve includes first and second arms and a valve base including an attaching portion. Each of the first and the second arms includes proximal and distal ends. The first and the second arms extend from the proximal ends on the valve base to the main discharge port and the sub-discharge port, respectively. The first and the second arms extend so as to come closer to each other at the distal ends thereof than at the proximal ends thereof. The injection port is disposed in an injection arrangement area that is an area located between the first and the second arms and expands larger on the proximal ends side than on the distal ends side.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: May 26, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinji Tsubai, Yoshikazu Fukutani, Yoshihiro Fukaya
  • Patent number: 10655625
    Abstract: A scroll compressor includes a pillar-shaped member that is inserted into a scroll-side engagement section formed on a stationary scroll. A lower end-face of an engagement section between the pillar-shaped member and the scroll-side engagement section is located above a lap end-face of a stationary spiral lap.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: May 19, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Sadayuki Yamada, Takeshi Ogata, Yusuke Imai, Atsushi Sakuda, Takashi Morimoto, Akihiro Hayashi
  • Patent number: 10578103
    Abstract: A scroll compressor includes a shell, a fixed scroll and an orbiting scroll disposed in the shell, a first scroll wrap and a second scroll wrap that are provided in the fixed scroll and the orbiting scroll, respectively, and that are engaged with each other to form a plurality of compression chambers, a crankshaft that causes the orbiting scroll to perform eccentric revolving motion, a tip seal member that is inserted in the tip of the second scroll wrap along the spiral direction and that is in sliding contact with the first baseplate of the fixed scroll, and injection ports that are provided through the first baseplate of the fixed scroll and that introduce refrigerant at an intermediate pressure between suction pressure and discharge pressure into the compression chambers from the outside of the shell.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: March 3, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuhei Koyama, Masahiro Nakatani
  • Patent number: 10480513
    Abstract: An intermediate discharge port in a scroll compressor and a method for controlling part-load efficiency of a scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scroll member forming a compression chamber; a discharge port for receiving a compressed fluid; and an intermediate discharge port fluidly connected between the compression chamber and the discharge port, the intermediate discharge port including a sealing member, fluid flow being prevented between the compression chamber and the discharge port through the intermediate discharge port when in a flow-blocked state, and fluid flow being enabled between the compression chamber and the discharge port through the intermediate discharge port when in a flow-permitted state.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: November 19, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventor: Eric S. Mlsna
  • Patent number: 10451067
    Abstract: A compression device includes an air cylinder (31); an upper bearing (4) and a lower bearing (5); a piston (71) which defines a working space; a first slide vane (81) and a second slide vane (82) which separate the working space into a first and a second working chamber; a first air suction port (101) and a second air suction port (102) both of which are in communication with the working space; and a first air discharge port (91) and a second air discharge port (92) both of which are in communication with the working space. The first and the second air suction port satisfy the following condition: 0.25?(V1/S1)*(S2/V2)?4, where VI and V2 are respectively the maximum volume of the first and the second working chamber, and S1 and S2 are respectively the opening area of the first and the second air suction port.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: October 22, 2019
    Assignee: GUANGDONG MEIZHI COMPRESSOR CO., LTD.
    Inventors: Xingbiao Zhou, Yongjun Fu, Liyu Zheng, Cheng Zhang, Hong Guo
  • Patent number: 10436196
    Abstract: A compressor (22) comprises a housing (50) having a first port (26) and a second port (28). A male rotor (52) has a working portion (64) having a plurality of lobes (110) of a count (NM) and at least a first shaft portion (62) protruding beyond a first end (68) of the male rotor working portion and mounted for rotation about a first axis (500). A female rotor (54) has a working portion (66) having a plurality of lobes (112) of a count (NF) and mounted for rotation about a second axis (502) so as to be enmeshed with the male rotor working portion. An electric motor (56) is within the housing and has a stator (58) and a rotor (60) mounted to the first shaft portion. The compressor has no additional compressor rotors. The lobe count of the male rotor is less than the lobe count of the female rotor. A combined lobe count (NM+NF) is at least fifteen.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: October 8, 2019
    Assignee: Carrier Corporation
    Inventor: Amit Vaidya
  • Patent number: 10364813
    Abstract: The present invention comprises: a stator 2 that is cylindrical and has a through hole 10, the through hole 10 in the shape of a female screw and being formed at a certain pitch in the flow direction from an inlet to an outlet; and a rotor 3 that is formed in the shape of a male screw, is inserted into the through hole 10 of the stator 2 to form a transport space 11 with the inner circumferential surface of the through hole, and rotates to move a fluid from the inlet to the outlet through the transport space 11 while being inscribed on the inner circumferential surface. The volume of the transport space 11 is reduced toward the flow direction. This prevents, reliably, the occurrence of bubbles from a fluid at a downstream-side when the fluid is transported through the transport space 11 formed between the stator 2 and the rotor 3.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 30, 2019
    Assignee: HEISHIN Ltd.
    Inventors: Noriaki Sakakihara, Eiji Uetsuji
  • Patent number: 10323639
    Abstract: A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 18, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 10302085
    Abstract: The present invention relates to compression based engine boosting systems, and, more particularly, to a supercharger configuration for higher pressure applications.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: May 28, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Daniel R. Ouwenga, Paul J. McWilliams
  • Patent number: 10302152
    Abstract: A driving power transmission device includes a fluid pressure type clutch device that transmits driving power between two shaft members, and a pump that supplies a fluid to the clutch device. The pump includes a pump that makes a pressure of sucked fluid high; a first flow passage through which the fluid according to a pressure discharged from the pump is supplied to the clutch device during a driving of the pump; a second flow passage through which the fluid discharged from the pump is held during a stop of the pump and a pressing force is applied to the clutch device by the fluid to be held; and a switching valve that is switchable between a normal mode where a discharge port of the pump communicates with the first flow passage and a locking mode where the discharge port of the pump communicates with the second flow passage.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 28, 2019
    Assignee: JTEKT Corporation
    Inventor: Motoyasu Yamamori
  • Patent number: 10227984
    Abstract: A scroll compressor in which a winding angle of a first lap is larger than a winding angle of a second lap, a plurality of compression chambers are formed between the first lap and the second lap, the compression chambers include at least a first compression chamber and a second compression chamber that has a volume smaller than the first compression chamber, a first base plate is provided with a first injection port 16a for injection of refrigerant into the first compression chamber and a second injection port for injection of refrigerant into the second compression chamber, and an injection flow rate of the second injection port is higher than an injection flow rate of the first injection port.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: March 12, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuhei Koyama, Takashi Ishigaki
  • Patent number: 9951775
    Abstract: On a plane orthogonal to the rotation shaft, an upper muffler chamber has a plurality of flared portions that are flared from a center of a rotation shaft toward between penetrating bolts and a plurality of small-diameter portions that connect between the flared portions, are apart from penetrating bolts, and are formed on a center side of the rotation shaft from the penetrating bolts. A muffler outlet is provided in each flared portion. A second outlet and a refrigerant path hole of an upper end plate are positioned on an inside of one of a plurality of flared portions, and an opening area of the muffler outlet of one flared portion is greater than an opening area of the muffler outlet of each of the other flared portions.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: April 24, 2018
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Hiroki Katayama, Taku Morishita, Motonobu Furukawa, Naoya Morozumi
  • Patent number: 9897088
    Abstract: A scroll compressor (100) comprises an orbiting scroll component (160); a fixed scroll component (150); sealing components (PS1, PS2, PS3, PS4, PS5, PS6), wherein the sealing components match a concave part (158) on the orbiting scroll component (50) so as to form a back pressure chamber (BC) together, and the sealing components are constructed to separate the back pressure chamber from a high-pressure side and a low-pressure side in the scroll compressor (100); and a leakage path (L), wherein the leakage path (L) is constructed to allow fluid in the back pressure chamber (BC) to leak.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: February 20, 2018
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Xiaogeng Su, Yinbo Zhu
  • Patent number: 9841018
    Abstract: A suction groove is formed in an inside wall surface of a pump cover and is communicated with a suction passage of the pump cover. The suction groove extends along a rotational path of external teeth of an inner rotor and a rotational path of internal teeth of an outer rotor. An edge of a portion of the pump cover, which forms the suction groove, includes chamfered edge parts, which are chamfered, and unchamfered edge parts, which are not chamfered and are not rounded. Each of the unchamfered edge parts is located in a direct-inflow region of the suction groove, which overlaps with the suction passage in a view taken in a direction of a rotational axis, and each of the chamfered edge parts is located in a corresponding one of peripheral regions, which are other than the direct-inflow region.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: December 12, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiromi Sakai, Daiji Furuhashi
  • Patent number: 9791191
    Abstract: A temperature control apparatus (70) includes a heat exchanger (71) configured to exchange heat with the surroundings using a phase change of a refrigerant, a rotary pump (73) configured to receive the refrigerant from the heat exchanger (71) and fuse the refrigerant with oil contained inside the rotary pump, and an oil water separator (74) configured to receive the refrigerant fused with the oil from the rotary pump (73) and separate the refrigerant from the oil. The temperature control apparatus further includes a refrigeration cycle that implements a cooling function by circulating the refrigerant separated from the oil back to the heat exchanger (71).
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: October 17, 2017
    Assignee: Tokyo Electron Limited
    Inventors: Yasuharu Sasaki, Kazuyoshi Matsuzaki
  • Patent number: 9790940
    Abstract: A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: October 17, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 9790943
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 17, 2017
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Yoshio Kobayashi, Natsuki Kawabata, Toshikazu Harashima, Shumpei Yamazaki
  • Patent number: 9751384
    Abstract: A gas compressor includes a cylinder member, a rotor, and a plurality of vanes, wherein a proximal section is provided between the cylinder member and the rotor, so that a single cylinder room which performs a refrigerant gas compression cycle one-time per one rotation of the rotor is defined, and at least one sub-discharge section which maintains pressure of the refrigerant gas in a compression room in discharge pressure by releasing pressure of the compression room when the pressure of the refrigerant gas in the compression room reaches the discharge pressure.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: September 5, 2017
    Assignee: CALSONIC KANSEI CORPORATION
    Inventors: Hirotada Shimaguchi, Kouji Hirono, Masahiro Tsuda, Tatsuya Osaki, Shizuma Kaneko
  • Patent number: 9624925
    Abstract: The invention relates to a two-spindle screw pump of single-flow construction, comprising a pump housing, which has a pump portion, a bearing portion and a gear portion with a gear chamber, wherein the bearing portion and the pump portion are realized separately from each other characterized in that the gearwheel and the fastening element (and thus the shaft) are mutually rotatable, so that a spacing of the flanks of the feed screws (the flank clearance of the feed screws) is adjustable, that an opening is provided on the gear portion of the pump housing, that the opening is provided with a detachable cover, that the opening is arranged such that the cover is detachable in the mounted state of the screw pump, and that the gear chamber, for the adjustment of the flank clearance of the feed screws, can be reached with the tool necessary for this purpose.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 18, 2017
    Assignee: Jung and Co. Geratebau, GMBH
    Inventors: Weshen Christov, Hans Jung
  • Patent number: 9618234
    Abstract: A refrigeration cycle apparatus (50) includes: a main refrigerant circuit (21) having a compressor (1), a radiator (2), a first expansion mechanism (5), a second expansion mechanism (6), and an evaporator (4); an injection passage (22) for supplying an intermediate-pressure refrigerant to an injection port 1c of the compressor 1; and a water circuit (30) through which water to be heated in the radiator (2) flows. The refrigeration cycle apparatus (50) includes a sub heat exchanger (3) for cooling the water in the water circuit (30) by exchanging heat between the refrigerant in the injection passage (22) and the water to be heated in the radiator (2).
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: April 11, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kou Komori, Yuichi Yakumaru, Tomoichiro Tamura, Masaya Honma, Hiroki Hayashi
  • Patent number: 9617996
    Abstract: A compressor includes a casing, a motor fixed to the casing, a vertically extending drive shaft coupled to the motor, and a compression mechanism driven by the drive shaft to compress a fluid. A shaft-inside oil supply path is provided in the drive shaft. Oil at a bottom of the casing is supplied through the shaft-inside oil supply path to a sliding portion of the drive shaft above the motor. The compressor includes a shaft-inside oil discharge path provided in the drive shaft, and an oil discharge coupled to a lower end of the drive shaft. The shaft-inside oil discharge path extends from an upper portion to a lower portion of the motor. The oil discharge pump discharges the oil that has been supplied to the sliding portion of the drive shaft to the bottom of the casing through the shaft-inside oil discharge path.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: April 11, 2017
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiyuki Toyama, Tsuyoshi Fukunaga
  • Patent number: 9617998
    Abstract: The disclosure concerns a Roots-type blower comprising a housing defining first and second transversely overlapping cylindrical chambers and at least one inlet port and an outlet port; first and second meshed, lobed rotors, each lobe having a top land sealingly cooperating with the cylindrical chambers; a plurality of control volumes for transfer of fluid, each control volume being defined by a pair of adjacent lobes on one of the rotors, and at least one of the cylindrical chambers; and blowholes formed within the cylindrical chambers in connection with meshing of the lobes of the first and second rotors. The blower further comprises at least one backflow slot extending through the housing wall of each cylindrical chamber for effecting a leakage of fluid from downstream the at least one outlet port into a control volume.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: April 11, 2017
    Assignee: VOLVO CAR CORPORATION
    Inventors: Magnus Knutsson, Anders Ohlson, Ragnar Burenius, Johan Brunberg, Amir Toma
  • Patent number: 9546659
    Abstract: A rotary compressor (100) includes a compression mechanism (3), a motor (2), a suction path (14), a back-pressure chamber (18), a return path (16), an inverter (42), and a controller (44). A check valve (73) of a reed valve type for opening and closing a return port (3c) of the compression mechanism (3) is disposed in the back-pressure chamber (18). The return path (16) functions to return a working fluid to the suction path (14) from the back-pressure chamber (18). A volume-varying valve (17) is provided in the return path (16). The volume-varying valve (17) allows the working fluid to flow through the return path (16) when the suction volume of the compression mechanism (3) should be set relatively small, and precludes the working fluid from flowing through the return path (16) to increase the pressure in the back-pressure chamber (18) when the suction volume of the compression mechanism (3) should be set relatively large.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: January 17, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Ogata, Yu Shiotani, Akira Hiwata, Hiroshi Hasegawa
  • Patent number: 9399976
    Abstract: A fuel delivery system including a high pressure fuel pump assembly. The assembly includes first and second output fuel paths each in communication with a fuel pump chamber. A main pressure relief fuel path is in communication with the fuel pump chamber and includes a pressure relief valve. A first relief fuel path is in communication with both the first output fuel path and the main pressure relief fuel path. A second relief fuel path is in communication with both the second output fuel path and the main pressure relief fuel path. The first and the second relief fuel paths are configured to restrict fuel flow therethrough between the first and the second output fuel paths.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: July 26, 2016
    Assignees: Denso International America, Inc., DENSO CORPORATION
    Inventors: Dhyana Ramamurthy, Steve Roseborsky
  • Patent number: 9243633
    Abstract: A device for branching a fluidic partial flow off a main flow by a hydraulic pump (10) includes individual main chambers (12, 14, 16, 18, 20) sealed from each other and divided into functional groups, and operates according to the displacement principle. The chambers enable fluid from at least one main flow inlet (22) to be transported from an inlet or suction side to an outlet or pressure side of the hydraulic pump (10) and then via at least one main flow outlet. At least one independent partial chamber (26) is provided for the transport of the partial flow in addition to the main chambers (12, 14, 16, 18, 20). The partial chamber forms part of the pressure side of the hydraulic pump (10) and is connected to an independent partial current outlet (42) separate from the main flow inlet (22) and the main flow outlet (24).
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: January 26, 2016
    Assignee: HYDAC FILTERTECHNIK GMBH
    Inventors: Andreas Schunk, Frank Hiery, Helmut Mertens
  • Patent number: 9163627
    Abstract: A rotating pump includes an outer rotor and an inner rotor. The inner and outer rotors are rotated by a drive shaft between a first side plate and a second side plate to pump put fluid. The first side plate faces the inner and outer rotors and has a first surface and a second surface. The first surface is inclined to an axial direction of the drive shaft to create a wedge-shaped gap between itself and one of the inner and outer rotor. The second surface extends more parallel to a direction perpendicular to the axis direction of the drive shaft than the first surface does. The geometric configurations of the first and second surfaces serve to minimize the leakage of the brake fluid without sacrificing a reduction in resistance to sliding motion of the inner rotor and the outer rotor on the second side plate.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: October 20, 2015
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC., ADVICS CO., LTD.
    Inventors: Yasuhiro Kawase, Kazunori Uchiyama, Naoki Hakamada, Kazuhide Uchida, Takahiro Yamaguchi, Tomoaki Kawabata
  • Patent number: 9115583
    Abstract: A compressor includes a housing including a case and a front head attached to the case, a compressor body contained in the housing, and an intake chamber provided in the front head between the compressor body and the front head. A lower part of the front head forming the intake chamber is positioned further away from the case than an upper part of the front head to increase a capacity of the intake chamber.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: August 25, 2015
    Assignee: CALSONIC KANSEI CORPORATION
    Inventors: Keigo Usui, Kiyotaka Tanaka
  • Patent number: 9046101
    Abstract: A mounting adapter is disclosed for use with a gear pump. The mounting adapter may have a generally plate-like base member, and inlet and outlet ports both formed in the base member. The mounting adapter may also have a first bearing bore formed in the base member between the inlet port and the outlet port and configured to receive a first gear shaft, and a first bleed groove formed in the base member adjacent the outlet port. The first bleed groove may be generally concentric with the first bearing bore. The mounting adapter may further have a second bearing bore formed in the base member between the inlet port and the outlet port and configured to receive a second gear shaft, and a second bleed groove formed in the base member adjacent the outlet port. The second bleed groove may be generally concentric with the second bearing bore.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: June 2, 2015
    Assignee: Caterpillar Inc.
    Inventor: Randall Edward Furrer
  • Publication number: 20150147212
    Abstract: A reversible pneumatic vane motor includes a stator housing with a pressure air inlet passage and an exhaust air outlet passage, a cylinder supported in the stator housing, a vane carrying rotor rotatable in the cylinder and forming a clearance seal portion with the cylinder, air communication ports located at opposite sides of the seal portion for supplying motive pressure air or scavenging exhaust air from the cylinder, a primary outlet diametrically opposite the clearance seal portion, and a directional valve for connecting alternatively the air communication ports to the pressure air inlet passage and the exhaust air outlet passage. The motor also includes auxiliary outlet ports which are located between the primary outlet and each one of the air communication ports, and the directional valve includes control parts for opening up and closing, respectively, communication between the auxiliary outlet ports and the atmosphere via the exhaust air outlet passage.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 28, 2015
    Applicant: ATLAS COPCO INDUSTRIAL TECHNIQUE AB
    Inventor: Anders Urban Nelson
  • Publication number: 20150147213
    Abstract: A gas compressor includes at least two first and second discharge ports (45a, 45b) which are provided at an upstream side in a rotation direction of a rotor (50) along a peripheral direction of an inner peripheral surface 40a of a cylinder (40) with respect to a closest area (proximity part (48)) where the inner peripheral surface (40a) of the cylinder (40) and an outer peripheral surface (50a) of the rotor (50) are closest in a range of one revolution of a rotation shaft (51) and configured to discharge the refrigerant gas compressed in compression chambers (43). Of the first and second discharge ports (45a, 45b), on only the first discharge port (45a) closest to the proximity part (48), a cutout groove portion (47) is provided at a downstream-side edge portion of the first discharge port (45a) in the rotation direction of the rotor (50).
    Type: Application
    Filed: May 30, 2013
    Publication date: May 28, 2015
    Applicant: CALSONIC KANSEL CORPORATION
    Inventors: Kouji Hirono, Hirotada Shimaguchi, Masahiro Tsuda, Shizuma Kaneko, Tatsuya Osaki
  • Publication number: 20150135764
    Abstract: A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a casing, a fixed scroll, an orbiting scroll, and an injection passage. The fixed scroll may further include a first injection hole and a second injection hole formed on a spiral flow passage, and a third injection hole and a fourth injection hole formed on the spiral flow passage at a position inwardly rotated by about 360 degrees from the first injection hole and the second injection hole along the spiral flow passage. The first injection hole and the third injection hole may be formed on an outer lane of the spiral flow passage, and the second injection hole and the fourth injection hole may be formed on an inner lane of the spiral flow passage.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 21, 2015
    Inventors: Byeongsu KIM, Byoungjin RYU, Beomchan KIM
  • Patent number: 9033690
    Abstract: A scavenge gear pump and its method of operation is described. The scavenge gear pump includes a pump housing defining a pump chamber, an inlet passage, an outlet passage, and a fluid injection passage in fluid communication with the pump chamber. The inlet passage receives an admixed fluid at low pressure and the outlet passage the admixed fluid at high pressure from a downstream region of said pump chamber. The fluid injection passage receives a third fluid at an injection pressure for input into the pump chamber. A pair of driveable gears is disposed in the pump chamber. The third fluid is injected directly into the gear meshing area of the pump chamber through the fluid injection passage so that the third fluid fills voids at least between said intermeshing teeth of the driveable gears and so that the second fluid does not occupy the gear meshing area.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 19, 2015
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Daniel Alecu, Pierre Gauvin, Ritchie Domingo
  • Patent number: 9033689
    Abstract: The scroll refrigeration compressor includes a sealed casing, stationary and moving volutes including spiral wraps engaged in one another and defining the variable-volume compression chambers, a delivery chamber defined by the plate of the stationary volute and the sealed casing, a heat shield disposed in the delivery chamber and dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing, and at least one flow passage arranged to communicate the first and second volumes. The compressor further includes at least one bypass passage arranged to communicate the first volume with an intermediate compression chamber, and at least one bypass valve disposed in the first volume and movable between closing and opening positions for closing and opening the corresponding bypass passage.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 19, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Christophe Ancel
  • Publication number: 20150132168
    Abstract: A compressor (100) comprises: a compressor main body (60) being formed so that one cycle of stroke is performed by a compression room (43) which is partitioned by a rotor (50), cylinder (40), both side blocks (20, 30), and vanes (58) during one revolution of the rotor (50); a cyclone block (70) which separates a refrigerant oil (R) from refrigerant gas (G), wherein a second discharge section (46) which discharge the refrigerant gas (G) when the pressure inside the compression room (43) reaches the discharge pressure before the compression room (43) faces a first discharge section (45) is formed, and a communicating path (39) which connects a discharge chamber (45a) in the first discharge section (45) and a discharge chamber (46a) in the second discharge section (46) is formed on the upper stream side of than the cyclone block (70).
    Type: Application
    Filed: May 20, 2013
    Publication date: May 14, 2015
    Applicant: Calsonic Kansei Corporation
    Inventors: Masahiro Tsuda, Hirotada Shimaguchi, Tatsuya Osaki, Kouji Hirono, Shizuma Kaneko
  • Patent number: 9028231
    Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation; and holes fluidly connected to the lobed chamber and configured to allow fluid discharge from the lobed chamber through the holes and to prevent fluid flow into the lobed chamber through the holes.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: May 12, 2015
    Inventor: Yaode Yang
  • Publication number: 20150118088
    Abstract: A valve for regulating the fluid pressure and/or the fluid flow in a fluid distribution network. The valve comprises a stator (10, 110) defining an interior space (14, 114); at least one inlet port (15, 131a, 132a) and at least one outlet port (15, 133a, 134a). The inlet port and outlet port are arranged for being connected to a fluid duct. A rotor (20, 120) is arranged rotatable about a rotational axis in the interior space and is provided with a rotor core (21, 121) and a number of vanes (23, 123), which are movable in relation to the core. The rotor continuously divides, in sealing relation with the stator, upon rotation of the rotor the interior space into at least two mutually separated chambers (14a, 14b, 114a-d). Each chamber comprises an inlet opening (17a, 17b, 112a) and an outlet opening (18a, 18b, 112b).
    Type: Application
    Filed: May 15, 2013
    Publication date: April 30, 2015
    Inventors: Trond Melhus, Per Hassel Sörensen
  • Patent number: 9017050
    Abstract: The scroll refrigeration compressor includes a stationary volute and a moving volute provided with spiral wraps defining variable-volume compression chambers, a separating member sealably mounted on a plate of the stationary volute so as to allow a relative movement between the separating member and the stationary volute, a delivery chamber at least partially defined by the separating member and the sealed casing. The compressor further includes a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber, and a anti-return device comprising a closing member movable between closing and opening positions for closing and opening the bypass passage, and an enclosure, positioned between the separating member and the plate of the stationary volute, including a first portion sealably mounted in a housing defined by the separating member and oriented substantially parallel to the longitudinal axis of the compressor.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: April 28, 2015
    Assignee: Danfoss Commercial Compressors
    Inventors: Pierre Ginies, Mickael Bron, Dominique Gross, Stephane Watts, Franck Meynand
  • Publication number: 20150110658
    Abstract: An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Inventor: JACOB J. BERRY
  • Patent number: 9011124
    Abstract: An enclosed positive displacement mechanism including a body with an inlet and an outlet; a rotor mounted in the body and rotatable about a main axis; an orbiting piston located in the cavity, rotatable about an eccentric secondary axis and arranged to orbit around the main axis to roll on the internal side surface of the cavity; and a vane located in the cavity, slidable in the piston and mounted in the body between one inlet and one outlet so as to oscillate. The orbiting piston and the vane divide in cyclic manner the cavity into a first and a second chamber with variable volume, which are mutually complementary and communicate with the inlet and the outlet. During a portion of its oscillation, the vane passes through the piston and is in contact with the side surface of the cavity, thereby separating the chambers in a fluid-tight manner.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: April 21, 2015
    Assignee: VHIT S.p.A.
    Inventor: Leonardo Cadeddu
  • Patent number: 9011123
    Abstract: A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports and a swinging abutment mounted therein, and a rotor eccentrically mounted on an axial drive shaft for rotation within the chamber. The rotor keeps continuous wiping contact with the chamber wall while the swinging abutment maintains contact with the rotor to partition the intake and outlet ports. In a single abutment configuration, a full intake/exhaust cycle occurs every 360° of rotor travel.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 21, 2015
    Inventor: John McIntyre
  • Patent number: 8998596
    Abstract: A scroll compressor includes a pressing mechanism and a back-flow prevention mechanism. The pressing mechanism includes a back-pressure chamber facing a back surface of a movable-scroll end plate, and a back-pressure supply path arranged to allow the back-pressure chamber to communicate with a compression chamber which is in a state right before the compression chamber communicates with an outlet port or a state in which the compression chamber communicates with the outlet port. The back-flow prevention mechanism allows refrigerant of the back-pressure supply path to flow from the compression chamber to the back-pressure chamber, and prevents fluid of the back-pressure supply path from returning from the back-pressure chamber to the compression chamber.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: April 7, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Kenji Nagahara, Youhei Nishide, Nobuhiro Nojima, Yoshinobu Yosuke, Takashi Uekawa, Masanori Masuda
  • Patent number: 8998597
    Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation and forming a fluid-tight seal between some portions of the outer surface of the piston and the inner surface of the chamber wall such that enclosed spaces are formed between the piston and the chamber wall.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: April 7, 2015
    Inventor: Yaode Yang
  • Publication number: 20150086403
    Abstract: An internal-gear pump has a housing which has a first fluid port and a second fluid port. An inner rotor is mounted in the housing so as to be rotatable about an inner rotor axis and has an external toothing. An outer rotor is rotatable in the housing about an outer rotor axis and has an internal toothing which, to generate a pump action, engages with the external toothing of the inner rotor. The internal-gear pump furthermore has a ring element which is mounted movably in the housing so as to be pivotable between a first position and a second position. At least a third fluid port is formed on the housing. The third fluid port is arranged relative to the ring element such that, in the first position of the ring element, the third fluid port is connected to the second fluid port. In the second position, said third fluid port is separated from the second fluid port.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 26, 2015
    Inventors: Mark Schweiher, Thomas Hoffmeister, Sven Schuster, Holger Berg
  • Patent number: 8985982
    Abstract: A pump housing has a cylindrical interior surface having outlets and a pair of side surfaces defining, in combination with the interior surface, a substantially cylindrical chamber. The surfaces have inlets. A rotor has a void, lobes and, for each lobe, a throughpassage. The rotor is positioned in the chamber such that the void communicates with the inlet to receive fluid and the throughpassage for each lobe provides communication between the void and chamber. The rotor is rotatably mounted in the chamber such that the lobes traverse the cylindrical surface. Provided for each outlet is a vane. As the rotor turns, the rotor outer surface is traversed by the vane to create, as the vane traverses a throughpassage, a chamber ahead of the vane which increases in volume and communicates with the throughpassage, and a chamber behind the vane which decreases in volume and communicates with the outlet port.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: March 24, 2015
    Assignee: 1564330 Ontario Inc.
    Inventor: Albert W. Patterson
  • Patent number: 8979515
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 17, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Yoshio Kobayashi, Natsuki Kawabata, Toshikazu Harashima, Shumpei Yamazaki
  • Patent number: 8967987
    Abstract: A scroll compressor is provided, in which at least one bypass hole that bypass a portion of a refrigerant before the refrigerant is discharged through a discharge hole is formed at a position where a bypass section that bypasses the refrigerant through the at least one bypass hole overlaps a discharge section that discharges the refrigerant through the discharge hole. The at least one bypass hole is formed at a position where a wrap volume ratio (Vs/Vd), which is a ratio of a suction volume (Vs) with respect to a discharge volume (Vd) in a compression chamber, is within the range of about 1.8˜2.2. With this configuration, over-compression of refrigerant may be prevented in a low speed driving mode, and efficiency of the compressor may be enhanced in the low speed driving mode and under a low load condition.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: March 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Junghoon Park, Sungsoon Jang, Jeonghun Kim, Nara Han
  • Publication number: 20150027686
    Abstract: A crude oil lifting system and a method utilizing a vane pump for conveying a fluid. The crude oil lifting system comprises: an oil pipe and an oil pump connected to the oil pipe. The oil pump is the vane pump. The vane pump is provided with a cylindrical stator. The stator has arranged therein a drive shaft and a rator sleeved onto the drive shaft. The drive shaft is arranged within the stator along the direction parallel to the length of the stator. An intake plate is arranged at the lower end of the stator. A discharge plate is arranged at the upper end of the stator. The intake plate, the discharge plate, and the stator form a cylindrical cavity. The rotor is arranged between the intake plate and the discharge plate. An intake opening for taking in the crude oil is arranged on the intake plate. A discharge opening for discharging the crude oil is arranged on the discharge plate.
    Type: Application
    Filed: October 22, 2012
    Publication date: January 29, 2015
    Inventors: Zhongxian Hao, Zejun Shen, Lixin Zhang, Xiaohan Pei, Quanbin Wang, Zheng Tong, Tongbin Wang, Jingwei Jin
  • Publication number: 20150017042
    Abstract: The present invention relates to a rotary motor, comprising a plurality of vanes, an inner rotary member housing the plurality of vanes projecting from a central rotation axis of the inner rotor, a multi lobe member encompassing the inner rotary member and the plurality of vanes, where the multi lobe member comprises at least two lobes wherein each of the lobes comprises an inlet and an outlet for a working medium, and a plurality of chambers wherein each of the chambers is encompassed by an inner surface of the multi lobe member and an outer surface of the inner rotary member. Such devices in accordance with some embodiments of the invention provide that a plurality of inlets and outlets amplify the output torque of the motor, that any side load is absent or minimized, and that a faster and stronger rotational force is achieved compared to a conventional hydraulic motor having a single pair of inlet and outlet.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 15, 2015
    Inventor: Michael T. Landrum
  • Publication number: 20140369878
    Abstract: A gas compressor includes a cylinder member (40), a rotor (50), and a plurality of vanes (58), wherein a proximal section (48) is provided between the cylinder member (40) and the rotor (50), so that a single cylinder room (42) which performs a refrigerant gas (G) compression cycle one-time per one rotation of the rotor (50) is formed, and at least one sub-discharge section (46) which maintains pressure of the refrigerant gas (G) in a compression room (43) in discharge pressure (P) by releasing the pressure of the compression room (43) when the pressure of the refrigerant gas (G) in the compression room (43) reaches the discharge pressure (P).
    Type: Application
    Filed: November 22, 2012
    Publication date: December 18, 2014
    Inventors: Hirotada Shimaguchi, Kouji Hirono, Masahiro Tsuda, Tatsuya Osaki, Shizuma Kaneko