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公开(公告)号：US11143177B2
公开(公告)日：2021-10-12
申请号：US16077503
申请日：2016-12-07
发明人： Akito Ohata
IPC分类号： F04B49/02 , F04B35/04 , F04B49/06 , F04B49/10 , F04B41/02 , F04B39/00 , F04B39/06 , F04B27/053
摘要： The purpose of the present invention is to provide a reciprocating compressor which is a compact, light-weight, portable air compressor such that deterioration of performance due to problems such as wear on the surface finish of the cylinder when the compressor is used for a long period of time outside the operating temperature range thereof is prevented. To achieve this, the cylinder temperature is detected, and control is carried out so that the compressor is restarted at a lower restart pressure when the temperature is lower than a prescribed value and stopped (and also restarted, preferably) at a low pressure when the temperature is higher than a prescribed value.
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公开(公告)号：US20210310479A1
公开(公告)日：2021-10-07
申请号：US17269101
申请日：2019-11-28
发明人： Akihiro YAMAMOTO , Yoshiyuki KANEMOTO , Daichi OKA
摘要： Even when abnormal heat generation occurs during operation in a state where the temperature of a compressor is not increased, abnormality cannot be detected. A fluid machine includes a fluid machine body; a motor that drives the fluid machine body; a temperature sensor that measures a temperature of the fluid machine body; and a control unit that controls the fluid machine body. The control unit changes a temperature threshold value based on at least one of a pressure of a fluid discharged by the fluid machine body and a frequency of a voltage input into the motor, and issues a notification when the temperature of the compressor body measured by the temperature sensor exceeds the temperature threshold value.
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公开(公告)号：US11118583B2
公开(公告)日：2021-09-14
申请号：US15578093
申请日：2015-06-03
IPC分类号： F04C18/02
摘要： The present invention makes a lap clearance between a fixed scroll and an turning scroll as small as possible to suppress leakage of compressed fluid from a compression chamber in a compression operation, thereby improving a compression efficiency. Provided is a scroll-type fluid machine characterized by comprising: a fixed scroll having a scroll lap portion; and an orbiting scroll that is provided to face the fixed scroll and that has a scroll lap portion turning so as to form a plurality of compression chambers in a clearance relative to the lap portion of the fixed scroll, wherein the lap portion of at least one of the fixed scroll and the turning scroll is provided with, in a predetermined region, a recessed portion on one lateral surface thereof and a protruding portion on the other lateral surface thereof.
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公开(公告)号：US20210270911A1
公开(公告)日：2021-09-02
申请号：US17260028
申请日：2019-07-11
发明人： Hiroshi KAGEYAMA
摘要： It is an object to provide a power conversion device and a ground fault location diagnosis method for determining ground fault locations on a motor and a cable and notifying a user or an external device or system of a determination result even when ground faults of a plurality of phases occur at locations close to each other. In order to achieve the above object, the power conversion device includes a ground fault current measurement unit, an interphase short-circuit current measurement unit, and a ground fault location determination unit. The ground fault current measurement unit turns on all the switches of either upper arms or lower arms of three half- bridge circuits, and measures output current values of a plurality of phases generated during the ON period. The interphase short-circuit current measurement unit turns on a switch of an upper arm of one phase of the three half-bridge circuits and a switch of a lower arm of a phase different from the one phase, and measures output current values of a plurality of phases generated during a period of time for which both the switches are ON. The ground fault location determination unit determines a ground fault location based on the output current values measured by the ground fault current measurement unit and the output current values measured by the interphase short-circuit current measurement unit.
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公开(公告)号：US11104165B2
公开(公告)日：2021-08-31
申请号：US16089086
申请日：2016-03-29
发明人： Hiroko Kurihara , Takashi Kawano , Nobuhiro Harada , Kenjiro Fujii , Tomohisa Kohiyama , Makiko Naemura
IPC分类号： B41J29/393 , G06F3/12
摘要： Previously, a customer may not have known which information was acquired and may have felt anxiety. In addition, only internal data of the apparatus was previously acquired. However, in order to determine a trouble in the inkjet printer with high precision, visual information such as a state of a printer mechanism or a conveyance line and a print result is also necessary to determine the apparatus state. Therefore, it is necessary to establish a maintenance system capable of acquiring such information. Disclosed is a support service system for an inkjet printing apparatus, including: a first network terminal that can communicate information regarding a state of a first inkjet printing apparatus through communication from a first external communication device installed in the first inkjet printing apparatus; and a second network terminal that performs determination on the basis of the information regarding the state obtained through communication of the first network terminal and transmits a result of the determination to the first network terminal, wherein the first network terminal transmits a maintenance request for the first inkjet printing apparatus to the second network terminal, and the second network terminal transmits whether or not responding to the maintenance request to the first network terminal.
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公开(公告)号：US20210215147A1
公开(公告)日：2021-07-15
申请号：US17267972
申请日：2018-09-13
发明人： Kosuke SADAKATA , Hiroaki SAITO , Daichi OKA
摘要： A package type fluid machine includes a plurality of compressor bodies; a machine compartment in which the plurality of compressor bodies are disposed; an exhaust duct that exhausts a cooling gas from the machine compartment; a plurality of aftercoolers that are disposed inside the exhaust duct to cool a compressed fluid from the compressor bodies; and a shield that is disposed between the aftercoolers to shield a flow of the cooling gas.
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公开(公告)号：US20210146687A1
公开(公告)日：2021-05-20
申请号：US17161284
申请日：2021-01-28
发明人： Takahiro ARIMA , Sho MIZOGUCHI , Mamoru OKANO
摘要： An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.
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公开(公告)号：US10992203B2
公开(公告)日：2021-04-27
申请号：US16097738
申请日：2016-05-18
发明人： Hirooki Tokoi , Shuuichi Takahashi , Yasuei Yoneoka , Toshifumi Suzuki , Kenji Uzawa , Katsuyuki Yamazaki , Toru Sakai , Ryousou Masaki
摘要： The purpose of the present invention is to ensure reliability and installation space reduction of crossover wires of an axial gap type rotary electric machine. An axial gap type rotary electric machine having: a stator which is constructed by annularly arranging multiple core units about an axis of rotation, each of the core units having at least a core, windings disposed around the outer periphery of the core, and crossover wires leading out from the windings; at least one rotor which faces an axial end surface of the cores with a gap therebetween; and a rotary shaft which rotates along with the rotor. The axial end surface side and the outer diameter side of the stator, is provided with multiple wiring support sections, each having an arc-shaped base part extending in a rotational direction along the annular shape of the outer diameter side of the stator, wherein the base part has a length extending over the outer diameter-side end surfaces of two or more adjoining core units and a predetermined axial width, and is equipped with multiple axial grooves for guiding the crossover wires in the rotational direction which are disposed on the opposite surface of the base from the rotary shaft. The rotary electric machine has a molding resin for integrally molding the wiring support sections with the stator.
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公开(公告)号：US20210117344A1
公开(公告)日：2021-04-22
申请号：US16635081
申请日：2018-08-23
摘要： A control apparatus that accesses at least one I/O port of one or more I/O ports coupled to one or more control object apparatuses to control operation of a control object apparatus coupled to the I/O port includes a processor unit that executes a plurality of programs, and a storage unit that stores information on the one or more I/O ports and serves as a base of one or more shared areas each of the plurality of programs can access. The plurality of programs include one or more information programs in addition to one or more control programs. Each of the one or more control programs is a program that performs a scan process to output control information on the control object apparatus coupled to the I/O port. Each of the one or more information programs is a program that performs information processing different from scan operation.
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公开(公告)号：US20210108632A1
公开(公告)日：2021-04-15
申请号：US16959910
申请日：2019-01-16
发明人： Yaping LIU , Minoru KOIZUMI
摘要： There is provided an air pressure system for controlling an air compressor in real time in accordance with the actual usage of compressed air by a plurality of terminals. Furthermore, in case pressure losses change abruptly, unwanted electric power is prevented from being consumed by a stable operation free of response delays on the basis of a predicted model that assesses time lags of volume responses. There is provided an air pressure system for supplying compressed air discharged from an air compressor through an air tank and a piping system to a plurality of terminals that consume the compressed air, including a compressor pressure sensor for measuring the pressure of compressed air discharged from the air compressor, a plurality of terminal pressure sensors for measuring the pressures of compressed air supplied respectively to the terminals, a flow rate difference calculating device for calculating deviation information on the basis of a capacity of the air tank, information on the piping system, the pressure of compressed air discharged from the air compressor, and the pressures of compressed air supplied respectively to the terminals, and a control device for controlling operation of the air compressor on the basis of the deviation information.
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