公开(公告)号：US20210108735A1

公开(公告)日：2021-04-15

申请号：US17064932

申请日：2020-10-07

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej BUJEWICZ ,  Marcin KORCZYNSKI

IPC: F16K11/07

Abstract: A servo valve assembly includes a housing defining a cylindrical cavity having a central axis, and a spool disposed in the cavity and co-axially aligned with the central axis. A pair of transition portions define opposing conical cavity surfaces each connect a respective one of first and second cylindrical cavity portions with a third cylindrical cavity portion. The spool comprises a pair of blocking members projecting radially, and each of the blocking members defines a conical blocking surface opposing a respective one of the conical cavity surfaces to define a fluid flow passage therebetween. A cone angle of each conical blocking surface relative to the central is equal to a cone angle of the opposing conical cavity surface relative to the central axis. The spool is moveable along the central axis to vary a flow area of the flow passages between the conical blocking surfaces and the conical cavity surfaces.

公开(公告)号：US20200166153A1

公开(公告)日：2020-05-28

申请号：US16679526

申请日：2019-11-11

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI ,  Wojciech JANIGA

IPC: F16K31/124 ,  F15B13/02

Abstract: A servo valve comprises a member disposed in a cavity and axially-moveable therein. The member includes first and second sections, a central section located between the first and second sections and first and second transition sections respectively between the first and second sections and the central section, forming respective first and second outer surfaces angled relative to the axis (X). At least one of the transition sections comprises a non-circular cross-section having a concave portion forming at least part of the respective first and second surfaces and being at least partially aligned with and facing the respective first or second nozzle opening such that rotating the member in said cavity varies the level of obstruction of the first or second nozzle openings by the first or second outer surfaces.

公开(公告)号：US20210299598A1

公开(公告)日：2021-09-30

申请号：US17210711

申请日：2021-03-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Marek JEDLINSKI ,  Marcin KORCZYNSKI

IPC: B01D35/147 ,  B01D35/157 ,  B01D35/30 ,  B01D29/35 ,  F02M37/48

Abstract: A fuel filter is provided which includes a manifold, a connector element, a filter bowl, a filter element, an inlet shutoff valve, an outlet shutoff valve, an inlet port, an inlet passage, an outlet port, an outlet passage and a relief valve in which the connector element is fixed to the manifold, and the filter bowl is reversibly fixed to the connector element. The filter bowl is adapted to reversibly receive the filter element and is so configured that when the filter element is located within the filter bowl and the filter bowl attached to the connection element, the filter element divides the space defined by the connector element and filter bowl into an inlet filter chamber and an outlet filter chamber and the inlet port is incorporated in the manifold, and the inlet port and inlet filter chamber are in fluid communication via the inlet passage.

公开(公告)号：US20200025220A1

公开(公告)日：2020-01-23

申请号：US16516447

申请日：2019-07-19

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI

IPC: F15B13/043 ,  F16K11/07 ,  F16K39/00

Abstract: A servo valve comprises a valve housing, a cavity formed in the valve housing and defining a longitudinal axis (X), and a member disposed in the cavity and axially-moveable therein, wherein the member comprises a portion with first and second cylindrical sections having a first diameter (R1, R2), a central section located between the first and second cylindrical sections and having a second diameter (R3), and first and second frusto-conical sections connecting the first and second sections to the central section and forming respective first and second frusto-conical surfaces. A plurality of ports, each form a fluid passage through the valve housing and have first and second nozzles with first and second nozzle openings.

公开(公告)号：US20200025219A1

公开(公告)日：2020-01-23

申请号：US16435882

申请日：2019-06-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI

IPC: F15B13/043 ,  F16K31/06

Abstract: A servo valve comprising a first fluid supply port, a fluid return port and a conduit therebetween, an elongated flapper having a portion arranged in the conduit, and an actuator configured to move the flapper in a direction orthogonal to a longitudinal axis of the flapper between a first blocking position in which it blocks the conduit such that fluid cannot flow from the first fluid supply port to the fluid return port and an first open position in which the conduit is open such that fluid can flow from the first fluid supply port to the fluid return port.

公开(公告)号：US20230366482A1

公开(公告)日：2023-11-16

申请号：US18315164

申请日：2023-05-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI ,  Adam MOSCICKI

IPC: F16K31/42 ,  F16K31/00 ,  F16K11/22

CPC classification number: F16K31/426 ,  F16K31/004 ,  F16K11/22

Abstract: A servo valve comprising: a fluid transfer valve assembly includes: a housing having channel therethrough fluidly connecting a supply port, a return port and a control port formed in the housing; a moveable valve spool located within the channel and arranged to regulate flow of fluid between the supply port, the return port and the control port in response to a control signal; and a drive assembly configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The valve spool comprises a first spool part and a second spool part and the drive assembly comprises a piezoelectric actuator positioned between the first and the second spool parts within the channel. Then when a control signal is applied to the piezoelectric actuator it causes extension or contraction of the first and second piezoelectric actuator elements.

公开(公告)号：US20200309163A1

公开(公告)日：2020-10-01

申请号：US16832197

申请日：2020-03-27

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej BUJEWICZ ,  Marcin KORCZYNSKI

IPC: F15B13/04 ,  F15B13/043

Abstract: A servo valve includes a valve housing, a cavity formed in the valve housing defining an axis (X) and an axially moveable member disposed in the cavity. The member comprises flat surfaces parallel to the axis (X). A channel is formed within the cavity and a plurality of ports each forming a fluid passage through the valve housing in fluid communication with a spool and with the channel. The plurality of ports include first and second nozzles with nozzle openings, wherein in a first axial position of the member the first nozzle opening is at least substantially obstructed by the first flat surface, and in a second axial position of the member the second nozzle opening is at least substantially obstructed by the second surface, the member controlling fluid between the spool and the channel.

公开(公告)号：US20200023385A1

公开(公告)日：2020-01-23

申请号：US16421713

申请日：2019-05-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI ,  Maciej BUJEWICZ

IPC: B05B1/10

Abstract: A nozzle for a servo valve comprises an annular body defining an outer circumferential surface and an inner circumferential surface of the nozzle. An annular groove is disposed around the circumference of the annular body in the outer circumferential surface. A nozzle assembly (N) for a servo valve comprises the nozzle and a nozzle housing having a nozzle cavity defined by an inner circumferential cavity surface. The nozzle housing has an annular groove disposed around the circumference of the nozzle cavity in the inner circumferential cavity surface. The nozzle is received within the nozzle cavity such that the annular grooves in the nozzle and the nozzle housing are in fluid communication with each other.

公开(公告)号：US20240353021A1

公开(公告)日：2024-10-24

申请号：US18641648

申请日：2024-04-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Marcin KORCZYNSKI ,  Adam MOSCICKI

IPC: F16K31/124

CPC classification number: F16K31/124

Abstract: A single stage servo valve assembly includes a drive assembly and a valve body assembly. The valve body assembly defines: a valve body extending along a valve body axis between a first valve body end and a second valve body axis: a supply port; a control port; and a return port formed through the valve body each defining a respective fluid flow channel, having a fluid flow axis, providing fluid communication between an interior of the valve body and an exterior of the valve body. The drive assembly operates to control the flow of fluid between the supply port, the control port and the return port, via the interior of the valve body, in response to an electric command signal. Each of the supply port, and the return port includes a tapered nozzle at an interface between the interior of the valve body and the respective port fluid flow channel.

公开(公告)号：US20210332779A1

公开(公告)日：2021-10-28

申请号：US17239843

申请日：2021-04-26

Applicant: Hamilton Sundstrand Corporation

Inventor： Marek JEDLINSKI ,  Marcin KORCZYNSKI

IPC: F02M37/34 ,  B01D35/147 ,  B01D36/00

Abstract: A fuel filter includes a manifold, a connector element, a filter bowl, a filter element, a shutoff valve, an inlet port, an inlet passage, an outlet port, an outlet passage and a relief valve in which the connector element is fixed to the manifold, and the filter bowl is reversibly fixed to the connector element, the filter bowl is adapted to reversibly receive the filter element and is so configured that when the filter element is located within the filter bowl and the filter bowl attached to the connection element the filter element divides the space defined by the connector element and filter bowl into an inlet filter chamber and an outlet filter chamber, the inlet port is incorporated in the manifold, and the inlet port and inlet filter chamber are in fluid communication via the inlet passage, the outlet port is incorporated in the manifold.