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公开(公告)号：EP4495426A1
公开(公告)日：2025-01-22
申请号：EP23770474.7
申请日：2023-03-03
Inventor： TSUCHIYA, Takeshi , CHIBA, Kotaro , YABE, Toshiaki , SAKAI, Kohei , TANIYAMA, Yuki , NIKAIDO, Sho , SANO, Shotaro
Abstract: A suction flow path of a screw compressor includes: a male-side flow path that opens in an axial direction with respect to working chambers in a suction process on the male rotor side and extends from a starting end positioned on one side of a virtual plane to a first termination end positioned on the other side; and a female-side flow path that opens in the axial direction with respect to working chambers in the suction process on the female rotor side and extends from the starting end to a second termination end positioned on the other side of the virtual plane. A flow path wall of the male-side flow path includes a male-side first flow path wall that faces a rotor lobe section side, and a flow path wall of the female-side flow path includes a female-side first flow path wall that faces a rotor lobe section side. The male-side first flow path wall or the female-side first flow path wall is configured such that at least a partial area in a range from the starting end to the first termination end or the second termination end is closer to a male-side rotor lobe section or a female-side rotor lobe section from the starting end side toward the first termination end side or the second termination end side.
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公开(公告)号：EP4491875A1
公开(公告)日：2025-01-15
申请号：EP23766751.4
申请日：2023-03-03
Inventor： MATSUZAKA, Takehiro , TAKANO, Masahiko
Abstract: A gas compressor includes: a low pressure gas path that introduces compressed gas delivered from a low pressure stage compressor body into a high pressure stage compressor body; a first low pressure gas release valve disposed on a first low pressure branch path branched from the low pressure gas path; a high pressure gas path that introduces the compressed gas delivered from the high pressure stage compressor body to a demand destination; a first high pressure gas release valve disposed on a first high pressure branch path branched from the high pressure gas path; and a control device. The first low pressure branch path is disposed on a downstream side of a heat exchanger for low pressure stage exhaust heat recovery. The first high pressure branch path is disposed on a downstream side of a heat exchanger for high pressure stage exhaust heat recovery. The control device opens the first low pressure gas release valve and the first high pressure gas release valve at a time of switching from load operation to no-load operation.
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公开(公告)号：EP4468570A1
公开(公告)日：2024-11-27
申请号：EP22922069.4
申请日：2022-11-24
Inventor： IKEDA Kenji , TOKOI Hirooki , ENOMOTO Yuji , MURAKI Takahito , HASEGAWA Yu , MIKAMI Hiroyuki , SAKAI Toru , SUZUKI Toshifumi , AMAIKE Masaru
Abstract: The present invention includes: a stator core (21) having a slot (21a); a bobbin (22) fitted in the slot (21a) and having a through hole (22c) penetrating in an axial direction of the stator core (21); a coil (23) inserted in the through hole (22c); a plurality of protrusions (22e) that protrude from at least one of an inner periphery of the through hole (22c) and an outer periphery of the coil (23), and guide the position of the coil (23) in the through hole (22c); and a resin filled on the periphery of the coil (23) in the through hole (22c).
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公开(公告)号：EP4366152A1
公开(公告)日：2024-05-08
申请号：EP21948484.7
申请日：2021-11-10
Inventor： TOBARI, Kazuaki , OHASHI, Hironori , WATANABE, Hiroshi , OHYA, Masato
Abstract: A power converter apparatus comprising: a power converter that outputs signal to the magnet motor to vary the output frequency, output voltage and output current of the magnet motor, a control unit controls the power converter, wherein the control unit calculating the gain of the magnetic flux component of the q-axis, which varies with the phase of the magnet motor, calculating the d-axis induced voltage command value based on a value of the induced voltage coefficient, frequency estimates or frequency command value, and the gain of the flux component of the q-axis.
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公开(公告)号：EP4343806A1
公开(公告)日：2024-03-27
申请号：EP21940709.5
申请日：2021-05-18
Inventor： TAMURA, Kozo , KOBAYASHI, Masato , SHIBAYAMA, Shinichi
IPC: H01H33/666
Abstract: The present invention provides an operation apparatus which needs no additional shock mitigating functional component to attain the labor reduction, and allows reduction in the number of components to prevent increase in the apparatus size. The operation apparatus is provided with a moveable iron core which drives a drive shaft for operating a moveable-side electrode opposingly disposed to a fixed-side electrode to bring the moveable-side electrode and the fixed-side electrode into an electrical contact state, and a coil disposed around the moveable iron core. The drive shaft and the moveable iron core are integrally operated in association with a switching operation into an open/close state between the moveable-side electrode and the fixed-side electrode. The operation apparatus has the drive shaft slidably supported by a first bearing at a side of the moveable-side electrode, the moveable iron core slidably supported by a second bearing at a side opposite the moveable-side electrode, and a stopper plate for stopping an axial movement of an end of the moveable iron core at a side opposite the moveable-side electrode. When the moveable-side electrode and the fixed-side electrode are in a connected (closed) state, a space is defined by the moveable iron core, the second bearing, and the stopper plate.
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Patent Agency Ranking
公开(公告)号：EP4340211A1
公开(公告)日：2024-03-20
申请号：EP22807014.0
申请日：2022-01-24
Inventor： TOBARI, Kazuaki , IWASE, Yuuta , TAGUCHI, Yoshiyuki
Abstract: A power conversion device comprising, a power converter that outputs signal to the motor to vary the motor's output frequency, output voltage and output current and control unit that controls the power converter, the control unit is, calculating the first power from the output voltage and output current, calculating the second power from the output current, electrical circuit parameters and frequency estimates, calculating the first phase error estimate so that the first power follows the second power in the first frequency domain, calculating the second phase error estimate different from the first frequency domain in a second frequency domain, controlling the frequency estimates so that the first phase error estimate or the second phase error estimate follows the command value of the phase error estimate.
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公开(公告)号：EP4332379A1
公开(公告)日：2024-03-06
申请号：EP22795175.3
申请日：2022-01-14
Inventor： YAMAMOTO, Akihiro , KANEMOTO, Yoshiyuki , REN, Zhijia
Abstract: Provided is a compressor including a compressor unit that includes a compressor body that compresses gas and a motor that drives the compressor body, and a controller that carries out the operation number control for a plurality of the compressor units. The plurality of compressor units are connected to the same pipe. The controller causes, while continuing the operation number control for the compressor units that are a target of the operation number control, the compressor unit excluded from the target of the operation number control to start.
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公开(公告)号：EP4328449A1
公开(公告)日：2024-02-28
申请号：EP22791502.2
申请日：2022-03-28
Inventor： TSUCHIYA, Takeshi , CHIBA, Kotaro , NAGATA, Shuhei , YORIKANE, Shigeyuki , MORITA, Kenji , KAJIE, Yuta
IPC: F04C18/16
Abstract: A screw compressor for compressing a working medium sucked through a suction opening and discharging the compressed working medium through a delivery opening, wherein the screw compressor includes: a male rotor and a female rotor that rotate while meshing with each other; a casing that houses the male rotor and the female rotor and is provided with a bore which forms a working chamber designed, together with the male rotor and the female rotor, to compress the working medium; a drive unit that rotationally drives at least one of the male rotor and the female rotor; a working chamber closing unit that forms a suction port for sucking the working medium into the working chamber and closes the working chamber when the working chamber reaches a specified capacity; and a suction space that connects the suction opening and the suction port to allow communication therebetween, wherein an open space that connects the suction opening and the suction port to allow communication therebetween is provided between a shaft of the male rotor and a shaft of the female rotor on an opposite side of the male rotor and the female rotor relative to the suction port.
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公开(公告)号：EP4317043A1
公开(公告)日：2024-02-07
申请号：EP21935165.7
申请日：2021-12-03
Inventor： MOMOI, Yasuyuki , WATANABE, Michiharu , IESHIGE, Koji , OIKAWA, Yugo , TAGAMI, Tatsuya
Abstract: A crane includes a horizontal transport device horizontally movable with a motor, a hoisting device mounted on the horizontal transport device, the hoisting device being capable of winding a rope with a hoist motor, a hook attached on the rope to hang a payload and a control unit including a processor and a memory, the control unit being configured to control the horizontal transport device and the hoisting device. The control unit includes a rope tension determination unit configured to determine whether the rope is in a taut state without a slack; a state measurement unit configured to measure at least one state value of the crane when the rope has been wound up into a taut state by the hoisting device being driven and a transport control unit configured to move the horizontal transport device.
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公开(公告)号：EP4289624A1
公开(公告)日：2023-12-13
申请号：EP21924806.9
申请日：2021-12-06
Inventor： KISANUKI, Shoichiro , KATO, Manabu , SATO, Koma , SUGII, Taisuke
IPC: B41J2/09
Abstract: A novel inkjet recording device that allows occurrence of scattering to be suppressed without limiting the size of a printed character (font size) is provided. The novel inkjet recording device is so configured that a deflection positive electrode 203, a deflection negative electrode 107, or both the deflection positive electrode 203 and the deflection negative electrode 107 constituting a print head can be moved along a direction of ejection of ink droplets in correspondence with the size of a printed character.
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