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公开(公告)号：US20190154151A1
公开(公告)日：2019-05-23
申请号：US16092186
申请日：2017-05-09
发明人： Tatsuhiro ARIKAWA
摘要： A seal structure is provided which enables a reduction in the number of components and an improvement of the stability in sliding of the seal portion or the backup ring portion. A sealing structure seals two members which move relative to each other, in which a seal portion or a backup ring portion placed between the two members and a bearing portion similarly placed between the two members are formed into an integral structure. The seal portion or the backup ring portion is integrally provided to one end portion in the axial direction or both end portions in the axial direction of the bearing portion having a cylindrical shape. The seal structure is used as a piston seal or a rod seal in hydraulic and pneumatic devices in which a piston is inserted into a shell or a cylinder tube.
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公开(公告)号：US20230097864A1
公开(公告)日：2023-03-30
申请号：US18074351
申请日：2022-12-02
摘要： A capacity control valve includes: a valve body having first communication passages, second communication passages, third communication passages, and a main valve seat; a valve element having an intermediate communication passage, a main valve portion and an auxiliary valve portion; a pressure-sensitive element disposed in the valve body; a solenoid that drives a rod; a first biasing member that biases in a valve closing direction of the main valve portion; and a second biasing member that biases in a valve opening direction of the main valve portion, wherein the rod moves relative to the valve element to press the pressure-sensitive element. The capacity control valve can efficiently discharge a liquid refrigerant and can decrease a driving force of a compressor during a liquid refrigerant discharge operation.
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公开(公告)号：US11543033B2
公开(公告)日：2023-01-03
申请号：US16468649
申请日：2017-12-27
发明人： Masatoshi Itadani , Yuki Sasaki , Keiichi Chiba , Kenji Kiryu , Tetsuzo Okada
IPC分类号： F16J15/36
摘要： In an exemplary embodiment, a mechanical seal for sealing a fluid flowing outwardly radially from sliding surfaces S where a stationary ring 221 and a rotating ring 211 slide against each other, includes: a bellows 222 interposed between the stationary ring 221 and a stationary wall 226; a case member 223 for holding an outer cylindrical part 222c of the bellows 222 to the stationary ring 221; and a holding member 224 fitted to an inner cylindrical part 222a of the bellows 222, and having an axial length substantially equal to a length fitted to the inner cylindrical part 222a, wherein the bellows 222 has a curved part 222b between the outer cylindrical part 222c and the inner cylindrical part 222a, and the case member 223 is provided with a wall part 223a covering the entire periphery of the radial outer side of the curved part 222b.
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公开(公告)号：US20220397213A1
公开(公告)日：2022-12-15
申请号：US17771436
申请日：2020-10-15
发明人： Noriyuki OGAWA
摘要： An expansion valve includes: a main body portion having a valve chamber and a valve seat; a valve body configured for moving forward and backward relative to the valve seat; a case fixed to the main body portion; an excitation portion; a rotor that is driven to rotate by the excitation portion; and a forward and backward moving mechanism that converts a rotational movement of the rotor into a linear movement to move the valve body forward and backward. The valve chamber has a bellows housed therein externally mounted on the valve body and configured for expanding and contracting in association with the forward and backward movement of the valve body, and a space between the bellows and the valve body is held in a vacuum state.
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公开(公告)号：US11512786B2
公开(公告)日：2022-11-29
申请号：US16766124
申请日：2018-11-28
发明人： Masahiro Hayama , Yoshihiro Ogawa , Keigo Shirafuji , Kohei Fukudome , Daichi Kurihara , Wataru Takahashi
摘要： A capacity control valve, which can efficiently discharge a liquid refrigerant and reduce the driving force of a compressor, includes: a valve main body (10) including a first communication passage (11), a second communication passage (12), a third communication passage (13) and a main valve seat (15a); a valve body (20) including an intermediate communication passage (29), a main valve part (21c) and an auxiliary valve part (23d); a solenoid (30) which drives a rod (36) having an auxiliary valve seat (26c); a first biasing member (43) which biases the main valve part (21c) in the valve closing direction thereof; and a second biasing member (37) which biases the main valve part (21c) in the valve opening direction thereof, and the rod (36) relatively moves to the valve body (20), and opens and closes the auxiliary valve part (23d).
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公开(公告)号：US11506288B2
公开(公告)日：2022-11-22
申请号：US16627965
申请日：2018-07-11
IPC分类号： F16J15/43 , F16J15/3276
摘要： The shaft seal device includes a seal cover formed in a tubular shaped and provided on an outer periphery of a rotation shaft which is inserted into an axial hole of a housing, a flexible member that connects the seal cover to the housing, an auxiliary seal portion provided on an interior side of the shaft seal device in an axial direction of the seal cover, a magnetic fluid seal portion provided on an exterior side of the shaft seal device from the auxiliary seal portion in the axial direction of the seal cover, and bearings that support a load of the magnetic fluid seal portion.
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公开(公告)号：US20220243710A1
公开(公告)日：2022-08-04
申请号：US17622667
申请日：2020-07-08
摘要： A capacity control valve includes a valve housing to which a suction fluid having a suction pressure and a control fluid having a control pressure are supplied; a solenoid; a CS valve body that partitions an inside of the valve housing into a first space, and a second space and moves according to the suction pressure of the suction fluid and the control pressure of the control fluid, and a CS valve seat with which the CS valve body is configured to come into contact; a biasing member biasing the CS valve body in a valve opening direction of the valve; and a pilot valve formed of a pilot valve body to be driven by the solenoid and a pilot valve seat with which the pilot valve body is configured to come into contact.
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公开(公告)号：US20220221059A1
公开(公告)日：2022-07-14
申请号：US17610370
申请日：2020-05-11
发明人： Iwao MATSUOKA
IPC分类号： F16J15/3232
摘要： A seal device 1 includes first seal part facing an external fluid and second seal part arranged in parallel to the first seal part and facing a sealed fluid in an interior of equipment to prevent entry of the external fluid and leakage of a sealed fluid. Intermediate seal part is arranged in parallel to the first seal part and the second seal part between the first seal part and the second seal part. A gas chamber is formed between the first seal part and the intermediate seal part, to which a gas having a higher pressure than the external fluid is supplied. An intermediate chamber is formed between the intermediate seal part and the second seal part, to which a gas having a lower pressure than the gas supplied to the gas chamber and having lower pressure than the sealed fluid is supplied.
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公开(公告)号：US20220213877A1
公开(公告)日：2022-07-07
申请号：US17600529
申请日：2020-04-02
摘要： A capacity control valve includes a valve housing provided with a suction port through which a suction fluid of suction pressure Ps passes, and a control port through which a control fluid of control pressure Pc passes, a valve element configured to be driven by a solenoid, a spring that biases the valve element in a direction opposite to a driving direction of the solenoid, and a CS valve formed by a CS valve seat and the valve element, the CS valve being configured for opening and closing a communication between the control port and the suction port in accordance with a movement of the valve element. The capacity control valve further includes communication controller that controls a communication between the control port and a space on a back surface side of the valve element.
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公开(公告)号：US11378194B2
公开(公告)日：2022-07-05
申请号：US17287086
申请日：2019-11-06
发明人： Kohei Fukudome , Masahiro Hayama , Keigo Shirafuji
摘要： A capacity control valve includes a valve housing provided with a discharge port, a suction port, and a control port a rod driven by a solenoid; and a main valve that includes a main valve seat and a main valve body between the discharge port and the control port in accordance with a movement of the rod. The capacity control valve V further includes a CS valve that includes a CS valve seat and a CS valve body communication between the control port and the suction port. The CS valve body is disposed so as to be movable relative to the main valve body. The main valve body and the CS valve body move together in accordance with the movement of the rod while a closed state of the main valve is maintained.
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