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    POSITIVE DISPLACEMENT EXPANDER
    21.
    发明专利
    POSITIVE DISPLACEMENT EXPANDER 未知

    公开(公告)号：CA2859772A1

    公开(公告)日：2013-06-27

    申请号：CA2859772

    申请日：2012-12-19

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： PATTERSON CURTIS ,  JUAN ALEJANDRO ,  GOTTFRIED KRISTJAN ,  FARRELL ERIK

    IPC: F01C19/00 ,  F01C3/08 ,  F01C13/00 ,  F01C21/08

    Abstract: Provided herein are multiple variations, applications, and variations for producing electrical power from a flowing fluid such as a gas or liquid under pressure, for example natural gas flowing through a pipeline, by means of one or more positive displacement devices that drive one or more electrical generators. The electrical generators may be immersed in the flow stream together with the positive displacement devices as disclosed, or alternately may be isolated from the flow stream, such as by magnetic coupling, in order to promote longevity and to decrease the risk of accidental discharge or explosion of the fluid in the flow stream. To further decrease such risks, the positive displacement devices may isolate the drive fluid from the environment without the use of dynamic seals.

    APPARATUS AND METHOD FOR CONTROLLING A PRESSURE GAIN COMBUSTOR
    22.
    发明专利
    APPARATUS AND METHOD FOR CONTROLLING A PRESSURE GAIN COMBUSTOR 未知

    公开(公告)号：CA2834285A1

    公开(公告)日：2012-11-01

    申请号：CA2834285

    申请日：2012-04-27

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： FARSHCHIAN SOHEIL

    IPC: F02C7/22 ,  F02C5/00 ,  F02K7/02 ,  F23N5/00 ,  F23R3/28 ,  F23R7/00

    Abstract: A method of controlling operation of a pressure gain combustor comprises: determining a fuel injector duty cycle and a combustion frequency that meets a target load set point and a target fill fraction of the combustor; determining a fuel supply pressure setting, a fuel injector timing setting and an ignition timing setting that achieves the determined fuel injector duty cycle and combustion frequency; and sending a fuel supply pressure control signal with the fuel supply pressure setting to a fuel pressurizing means of the combustor, a fuel injector control signal with the fuel injector timing setting to a fuel injector of the combustor, and an ignition timing control signal with the ignition timing setting to an ignition assembly of the combustor.

    HYDRODYNAMIC BORE SEAL
    25.
    发明专利
    HYDRODYNAMIC BORE SEAL 未知

    公开(公告)号：CA2764228A1

    公开(公告)日：2010-12-09

    申请号：CA2764228

    申请日：2010-06-03

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： JUAN ALEJANDRO ,  PATTERSON CURTIS ,  FARSHCHIAN SOHEIL

    IPC: F16J15/54 ,  F01D11/02 ,  F02C7/28 ,  F16J15/44

    Abstract: The disclosed finger seals are designed to be operational under rotational velocity or a stationary condition. The contact surface of the finger seals is inclined in an axial direction. This incline causes a convergent leakage path between the finger foot surface and the bore. Therefore, the leakage flow passing through this gap exerts hydrodynamic lift on the finger and lifts the finger from the bore surface at design pressure. Since the slope is in the axial direction, the rotational velocity of the bore does not affect the hydrodynamic lift and the finger seals can operate at any rotational speed, unlike prior finger seal where the hydrodynamic lift is generated by rotational velocity. Each finger seal is pressure balanced. The pressure chambers on the two sides of each finger seal are connected through the finger cutouts. The finger seal design is such that the fingers lift and move away from the bore surface in radial direction. Therefore, the angle between the finger seal foot and the bore is constant at any lifted distance. In each seal stack up, in one form, each finger seal is designed with the specific required length to allow sufficient surface area for the hydrodynamic force such that the finger seals would be lifted from the bore surface at the design pressure.

    DUAL AXIS ROTOR
    26.
    发明专利
    DUAL AXIS ROTOR 未知

    公开(公告)号：CA2903906A1

    公开(公告)日：2014-09-18

    申请号：CA2903906

    申请日：2014-03-17

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： JUAN ALEJANDRO ,  PATTERSON CURTIS ,  FARRELL ERIK ,  SCOTT STEPHEN ,  FIOLKA KYLE

    IPC: F01C3/06 ,  F01C3/08 ,  F04C18/54

    Abstract: This disclosure concerns an advanced nutating positive displacement device having a high power to mass ratio and low production cost. This device in one example forms an exemplary pump as will be discussed in detail. The examples disclosed herein are of the rotary positive displacement type, but in a class by themselves. The devices are formed by a nutating rotor having a face comprising lobes and valleys, and a fixed stator also having a face with lobes and valleys. The face of the rotor opposes and cooperates with the face of the stator. The opposing faces define chambers that change volume with rotation of the rotor.

    INDEXED POSITIVE DISPLACEMENT ROTARY MOTION DEVICE
    27.
    发明专利
    INDEXED POSITIVE DISPLACEMENT ROTARY MOTION DEVICE 未知

    公开(公告)号：AU2014202553A1

    公开(公告)日：2014-06-05

    申请号：AU2014202553

    申请日：2014-05-12

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： JUAN ALEJANDRO ,  PATTERSON CURTIS ,  GOTTFRIED KRISTJAN ,  FARSHCHIAN SOHEIL

    IPC: F01C3/08 ,  F01C3/06

    Abstract: A pulse detonation device comprising: a) a mixing chamber in fluid communication with an oxidant inlet, the mixing chamber further in 5 communication with a fuel line, b) a diffuser configured to receive a fuel/oxidant mixture from the mixing chamber, c) a detonation region downstream of the diffuser, where the detonation region is configured with an ignition location that provides sufficient activation energy to ignite the fuel/oxidant mixture, d) whereby the expanding, combusted gas of the fuel/oxidant mixture travels down the 10 detonation region to an exit location.

    PRESSURE-GAIN COMBUSTION APPARATUS AND METHOD
    28.
    发明专利
    PRESSURE-GAIN COMBUSTION APPARATUS AND METHOD 未知

    公开(公告)号：CA2890151A1

    公开(公告)日：2014-05-15

    申请号：CA2890151

    申请日：2013-11-07

    Applicant: EXPONENTIAL TECHNOLOGIES INC

    Inventor： JUAN ALEJANDRO

    IPC: F23N5/00

    Abstract: A pressure gain combustor comprises a detonation chamber, a pre-combustion chamber, an oxidant swirl generator, an expansion-deflection (E-D) nozzle, and an ignition source. The detonation chamber has an upstream intake end and a downstream discharge end, and is configured to allow a supersonic combustion event to propagate therethrough. The pre-combustion chamber has a downstream end in fluid communication with the detonation chamber intake end, an upstream end in communication with a fuel delivery pathway, and a circumferential perimeter between the upstream and downstream ends with an annular opening in communication with an annular oxidant delivery pathway. The oxidant swirl generator is located in the oxidant delivery pathway and comprises vanes configured to cause oxidant flowing past the vanes to flow tangentially into the pre-combustion chamber thereby creating a high swirl velocity zone around the annular opening and a low swirl velocity zone in a central portion of the pre-combustion chamber. The E-D nozzle is positioned in between the pre-combustion chamber and detonation chamber and provides a diffusive fluid pathway therebetween. The ignition source is in communication with the low swirl velocity zone of the pre-combustion chamber. This configuration is expected to provide a combustor with a relatively low total run- up DDT distance and time, thereby enabling high operating frequencies and corresponding high combustor performance.

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