公开(公告)号：US11079028B2

公开(公告)日：2021-08-03

申请号：US16805982

申请日：2020-03-02

Applicant: DENSO CORPORATION

Inventor： Koji Hashimoto ,  Naohito Seko ,  Ryo Sano

IPC: F16K11/087 ,  F16K5/20 ,  F01P7/14 ,  F16K31/12 ,  F16K5/06

Abstract: A sleeve member of a movable unit has a first pressure receiving surface and a second pressure receiving surface. The first pressure receiving surface receives a first fluid pressure in an axial direction opposite to a biasing force of a spring, when a valve member closes a seat opening portion. The second pressure receiving surface receives a second fluid pressure in the same axial direction to a direction of the biasing force of the spring, when the valve member closes the seat opening portion. A first surface area and a second surface area are made to be equal to each other. Each of the first and the second surface areas is an area of a projected portion on a virtual plane perpendicular to the axial direction. Each of the projected portions is obtained when each of the first and the second pressure receiving surfaces is projected to the virtual plane.

公开(公告)号：US10066751B2

公开(公告)日：2018-09-04

申请号：US15121201

申请日：2015-06-23

Applicant: DENSO CORPORATION

Inventor： Naohito Seko ,  Yoshiaki Yamamoto ,  Shinichi Yokoyama ,  Yuuji Nakano ,  Ryo Sano

IPC: F16K31/04 ,  F16K11/087 ,  F16K5/06 ,  F16K5/20

Abstract: A valve device includes: a ball valve having a ball face shaped in a convex spherical surface; and a valve seat having a seat face shaped in a concave spherical surface. The seat face is pressed onto the ball face. The ball valve is rotated to open a valve by communicating a valve opening defined in the ball valve and a seat opening defined in the valve seat with each other, and to close the valve by stop the communication. A diameter of the seat opening Φ2 is smaller than a diameter of the valve opening Φ1. A curvature radius of the ball face R1 is smaller than or equal to a curvature radius of the seat face is R2.

公开(公告)号：US12209671B2

公开(公告)日：2025-01-28

申请号：US18295401

申请日：2023-04-04

Applicant: DENSO CORPORATION

Inventor： Naoki Asano ,  Ryo Sano ,  Atsushi Tanaka ,  Takehito Mizunuma ,  Takuya Hamada

IPC: F16K11/074 ,  F16K3/08 ,  F16K31/04

Abstract: A valve device includes a housing, a stationary valve and a drive valve. The stationary valve is placed in a fluid passage of the housing. The stationary valve forms a first passage, which conducts fluid, and a penetrating chamber which penetrates through the stationary valve in the axial direction. The drive valve is placed on one axial side of the stationary valve in the fluid passage and forms a second passage which conducts the fluid. The drive valve communicates the second passage to the first passage through rotation of the drive valve. The housing has a bottom portion that covers the penetrating chamber from another axial side. An upstream passage of the fluid passage, which is located on an upstream side of the drive valve and the stationary valve in a flow direction of the fluid, is communicated with the penetrating chamber through a communication passage.

公开(公告)号：US12196327B2

公开(公告)日：2025-01-14

申请号：US18194220

申请日：2023-03-31

Applicant: DENSO CORPORATION

Inventor： Takehito Mizunuma ,  Shota Kimura ,  Ryo Sano ,  Hiroki Shimada

IPC: F16K11/074 ,  F16K3/34 ,  F16K27/04 ,  F16K31/04 ,  F16K31/53 ,  F16K3/08

Abstract: A valve device includes a housing, a flow hole forming portion and a rotor. The housing has a passage for fluid. The flow hole forming portion is fixed at the passage and includes: a plurality of flow holes, each of which is configured to conduct the fluid; and at least one partition which is placed between corresponding adjacent two of the flow holes. The rotor includes a passage opening and a closing portion. The at least one partition of the flow hole forming portion has: a parallel portion which extends in parallel with a radial direction of an imaginary circle centered on a rotational axis; and a progressively varying portion which is placed on an outer side of the parallel portion in the radial direction. A width of the progressively varying portion measured in a circumferential direction is progressively increased toward the outer side in the radial direction.

公开(公告)号：US12135095B2

公开(公告)日：2024-11-05

申请号：US18190514

申请日：2023-03-27

Applicant: DENSO CORPORATION

Inventor： Ryo Sano

IPC: F16K3/34 ,  F16K3/08 ,  F16K31/44

Abstract: A valve device includes a housing, a stationary disk, a drive device, a shaft and a rotor. The stationary disk is fixed at an inside of the housing and has at least one flow passage hole. The shaft is rotated about a central axis by the drive device. The rotor increases or decreases an opening degree of the at least one flow passage hole. The rotor includes: a drive disk that slides relative to the stationary disk; and a lever that is fixed to the drive disk and couples between the drive disk and the shaft. A first torsion spring is placed between the housing and the shaft and urges the shaft relative to the housing in a circumferential direction around the central axis, and a second torsion spring is placed between the shaft and the lever and urges the lever relative to the shaft in the circumferential direction.

公开(公告)号：US12117089B2

公开(公告)日：2024-10-15

申请号：US18190565

申请日：2023-03-27

Applicant: DENSO CORPORATION

Inventor： Takuya Hamada ,  Ryo Sano ,  Atsushi Tanaka ,  Akira Higuchi

IPC: F16K11/074 ,  F16K3/02 ,  F16K3/34 ,  F16K31/04 ,  F16K3/08

CPC classification number: F16K3/0254 ,  F16K3/34 ,  F16K11/074 ,  F16K31/043 ,  F16K3/08

Abstract: A valve device includes a housing, a stationary disk, a drive device, a shaft and a rotor. The stationary disk is fixed at an inside of the housing and has at least one flow passage hole. The shaft is rotated about a central axis by the drive device. The rotor increases or decreases an opening degree of the at least one flow passage hole. The rotor includes: a drive disk that slides relative to the stationary disk; and a lever that is fixed to the drive disk and couples between the drive disk and the shaft. A torsion spring is placed between the shaft and the lever and urges the lever relative to the shaft in a circumferential direction around the central axis of the shaft. The shaft has a plurality of contact portions configured to contact the lever and respectively located at a plurality of locations.

公开(公告)号：US11149627B2

公开(公告)日：2021-10-19

申请号：US16779845

申请日：2020-02-03

Applicant: DENSO CORPORATION

Inventor： Ryo Sano

IPC: F01P7/14 ,  F16K25/00 ,  F16K3/26

Abstract: A cooling-water control valve device includes a valve member, a housing for accommodating the valve member, a pipe unit, a valve seat member, a spring and so on. The pipe unit has, at its axial end on a side facing to the valve member, an outside cylindrical portion and an inside cylindrical portion, which is coaxially arranged with the outside cylindrical portion at a radial-inside position of the outside cylindrical portion. An annular accommodation space is formed between the inside cylindrical portion and the outside cylindrical portion. The spring and the valve seat member are arranged in the annular accommodation space.

公开(公告)号：US09482160B2

公开(公告)日：2016-11-01

申请号：US13914998

申请日：2013-06-11

Applicant: DENSO CORPORATION

Inventor： Kazushi Sasaki ,  Hiroki Shimada ,  Ryo Sano

IPC: F02D13/02 ,  F02D41/00

CPC classification number: F02D13/0242 ,  F02D41/0072 ,  F02D41/0077 ,  F02M26/54 ,  F02M26/66

Abstract: A cam full close stopper defines a cam full close position that is a limit position of a rotatable range of a cam. A sensor element outputs a signal corresponding to a rotation angle of the cam. A signal processor changes the signal output from the sensor element into a sensor output. A storage part memorizes a data table representing a correspondence relationship between the rotation angle of the cam and the sensor output of the signal processor in a predetermined form, characteristics of the sensor output being adjustable at a plurality of points with respect to the rotation angle of the cam. The storage part memorizes the sensor output of the signal processor when the cam is fully closed at the cam full close position.

Abstract translation: 凸轮完全关闭止动器限定凸轮完全关闭位置，其是凸轮的可旋转范围的极限位置。 传感器元件输出与凸轮的旋转角相对应的信号。 信号处理器将从传感器元件输出的信号改变为传感器输出。 存储部件以预定形式存储表示凸轮的旋转角度和信号处理器的传感器输出之间的对应关系的数据表，该传感器输出的特性可在多个点处相对于旋转角度 凸轮。 当凸轮完全关闭时，存储部分存储信号处理器的传感器输出。

公开(公告)号：US11608903B2

公开(公告)日：2023-03-21

申请号：US17345082

申请日：2021-06-11

Applicant: DENSO CORPORATION

Inventor： Naohito Seko ,  Yoshiaki Yamamoto ,  Shinichi Yokoyama ,  Yuuji Nakano ,  Ryo Sano

IPC: F16K11/087 ,  F01P7/14 ,  F16K5/06 ,  F16K5/20 ,  F16K31/04

Abstract: A valve device includes: a ball valve having a ball face shaped in a convex spherical surface; and a valve seat having a seat face shaped in a concave spherical surface. The seat face is pressed onto the ball face. The ball valve is rotated to open a valve by communicating a valve opening defined in the ball valve and a seat opening defined in the valve seat with each other, and to close the valve by stop the communication. A diameter of the seat opening Φ2 is smaller than a diameter of the valve opening Φ1. A curvature radius of the ball face R1 is smaller than or equal to a curvature radius of the seat face is R2.

公开(公告)号：US11306645B2

公开(公告)日：2022-04-19

申请号：US16985698

申请日：2020-08-05

Applicant: DENSO CORPORATION

Inventor： Ryo Sano ,  Yosuke Tanaka

IPC: F01P7/14 ,  F16K3/26 ,  E21B33/038 ,  F16L25/12

Abstract: A housing unit includes a cylindrical passage member, through which cooling water flows. A valve unit includes a valve main body rotatable around its axis and a valve opened portion formed in an outer peripheral surface of the valve main body, through which the cooling water can pass. A valve seat unit includes a positioned member and a valve seat surface. An outer peripheral surface of the positioned member is positioned in a radial direction by an inner peripheral surface of the cylindrical passage member and the positioned member is movable in an axial direction in a reciprocal manner. The valve seat surface holds a fluid tight condition between the valve seat surface and the valve main body when it is in contact with the outer peripheral surface of the valve main body. A biasing member biases the valve seat unit in such a way that the valve seat surface is pushed to the outer peripheral surface of the valve main body. The cylindrical passage member includes a groove formed in an inner peripheral surface thereof at least in a part of an overlapping area, at which the cylindrical passage member and the positioned member overlap each other in the axial direction. The groove is recessed in a radial-outward direction from the inner peripheral surface.