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1.发明公开公开(公告)号：US20240295353A1
公开(公告)日：2024-09-05
申请号：US18572073
申请日：2021-06-22
发明人： Shinya KOMURE , Morio HIRAHARA , Yukio KIGUCHI , Noriomi OKAZAKI
CPC分类号： F25B49/02 , G06N20/00 , F25B2500/19 , F25B2500/222 , F25B2700/171 , F25B2700/195 , F25B2700/197 , F25B2700/21151 , F25B2700/21152
摘要： A refrigeration cycle apparatus includes an air conditioner, sensors, and processing circuitry. The processing circuitry determines a predicted opening of the electronic expansion valve of the air conditioner based on outputs of the sensors and an operation frequency of the compressor, assuming normal operation of the air conditioner. The processing circuitry calculates a prediction error by subtracting a measured opening of the electronic expansion valve from the predicted opening. The processing circuitry calculates multiple prediction errors in advance, calculates an offset value as an average of the multiple prediction error, and outputs a corrected prediction error by subtracting the offset value from the current prediction error. The processing circuitry detects a refrigerant leak of the air conditioner based on the corrected prediction error.
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公开(公告)号：US20240271637A1
公开(公告)日：2024-08-15
申请号：US18493093
申请日：2023-10-24
发明人： Yuki FURUTANI
CPC分类号： F04D29/526 , F04D19/002 , F04D29/541
摘要： An axial fan includes: an impeller including a rotating part, and a blade part connected to the rotating part; a bellmouth including a flat part orthogonal to an extension direction of a rotation axis of the rotating part; a rising part rising from the flat part; and an opening along which the rising part extends, the impeller being located in the opening, the rising part surrounding the impeller, the bellmouth including a plurality of grooves located at a surface of the bellmouth, the surface of the bellmouth being connected to an inner surface of the rising part, the inner surface of the rising part facing the blade part of the impeller, the plurality of grooves being located in at least a corner portion connecting the flat part and the rising part, the plurality of grooves extending in a direction crossing the flat part.
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公开(公告)号：US12025130B2
公开(公告)日：2024-07-02
申请号：US17205243
申请日：2021-03-18
发明人： Takuya Hirayama , Shigeki Kimura
IPC分类号： F04C18/356 , F04C23/00
CPC分类号： F04C18/3564 , F04C23/001 , F04C2240/40 , F04C2240/50 , F04C2240/60
摘要： According to one embodiment, a rotary compressor includes a compression mechanism unit. When H is the length of a middle shaft part, Hp is the length of a bearing hole, Dp is the inner diameter of the bearing hole, Dc is the outer diameter of a crank part, Dm is the outer diameter of the middle journal part, C1 is the axial length of a first chamfered part provided to a middle shaft part-side end edge of the crank part, C2 is the axial length of a second chamfered part, C3 is the axial length of a third chamfered part, and C4 is the axial length of a fourth chamfered part, Dp is larger than Dc and Dm, and the relationships of [Equation 1] H≤Hp, [Equation 2] H>Hp−C1−C2−√{square root over ((Dp2−Dc2))}, and [Equation 3] H>Hp−C3−C4−√{square root over ((Dp2−Dm2))} are all satisfied.
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公开(公告)号：US20240200556A1
公开(公告)日：2024-06-20
申请号：US18591117
申请日：2024-02-29
发明人： Norihisa WATANABE , Shohei ATOBE
CPC分类号： F04C2/344 , F25B31/026
摘要： A compressor of an embodiment includes a compression mechanism part that compresses a refrigerant in a sealed container. The compression mechanism part includes Cr and includes a first member and a second member which slidingly move relative to each other. The first member has a chromium layer and a nitride layer formed on a base member surface in this order. The nitride layer includes CrN and TiN. Carbide is deposited on a surface of the second member.
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公开(公告)号：US11892186B2
公开(公告)日：2024-02-06
申请号：US17269436
申请日：2019-09-04
发明人： Takashi Nakajo , Masato Abe , Nariya Komazaki
IPC分类号： F24F11/65 , F24F11/54 , F24F11/58 , F24F11/61 , F24F1/0007 , F24F1/26 , G05B19/045 , G08C19/22
CPC分类号： F24F11/65 , F24F1/0007 , F24F1/26 , F24F11/54 , F24F11/58 , F24F11/61 , G05B19/045 , G08C19/22 , G05B2219/25268 , G05B2219/2614
摘要： A detection device is connected to a plurality of communication devices by a communication line. The detection device has a reception unit, a measurement unit, and a detection unit. The reception unit receives signals with prescribed pulse widths transmitted from the plurality of communication devices, respectively. The measurement unit measures the pulse widths of the signals received by the reception unit. The detection unit is configured to detect the communication device disposed near a terminal end of the communication line as a terminal-end communication device on the basis of the plurality of pulse widths measured by the measurement unit.
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公开(公告)号：US20240011689A1
公开(公告)日：2024-01-11
申请号：US18472461
申请日：2023-09-22
发明人： Kohei Maruko , Shohei Arita , Masaaki Sato , Hiroichi Yamaguchi , Atsushi Baba , Yukio Kiguchi
CPC分类号： F25B49/02 , F25B1/00 , F25B2600/2513
摘要： According to one embodiment, a refrigeration cycle apparatus includes a main flow channel of a refrigerant, a compressor, a condenser, an evaporator, a branch channel, an expansion valve, a supercooling heat exchanger, an injection flow channel, and a control unit. The control unit determines, based on whether the determination condition is satisfied or not, a determination condition for adjusting an opening degree of the expansion valve and adjusts the opening degree of the expansion valve according to a first target value for a discharge temperature of the refrigerant from the compressor, or a second target value for a superheat degree of the refrigerant flowing through the injection flow channel.
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公开(公告)号：US11821664B2
公开(公告)日：2023-11-21
申请号：US17061135
申请日：2020-10-01
CPC分类号： F25B31/026 , F25B37/00 , F25B41/31 , F25B2400/07
摘要： According to one embodiment, a rotary compressor includes a compression mechanism unit and an electric motor. The compression mechanism unit includes a first bearing, a second bearing, first to third refrigerant compression units, a second intermediate partitioning panel, and a rotation shaft. The compression mechanism unit is fixed to the sealed container by a pair of fixing units which are provided at two locations spaced apart from each other in the axial direction of the rotation shaft, and the center of gravity of a structure comprising the compression mechanism unit and the rotor of the electric motor is positioned between the pair of fixing units.
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公开(公告)号：US20230324054A1
公开(公告)日：2023-10-12
申请号：US18043424
申请日：2020-09-11
发明人： Yuichi HANDA
CPC分类号： F24F1/24 , H05K7/20218 , H05K7/2039
摘要： An outdoor unit of an air conditioner includes: an electrical component box formed into a box shape; a waterproof cover that covers the electrical component box; and a refrigerant cooling heat sink that comes into contact with a back surface of the electrical component box. The refrigerant cooling heat sink is attached to an inner surface of the waterproof cover, and a relative position of the electrical component box with respect to the refrigerant cooling heat sink is set by the electrical component box being attached to a predetermined position of the waterproof cover.
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公开(公告)号：US11740762B2
公开(公告)日：2023-08-29
申请号：US17893497
申请日：2022-08-23
IPC分类号： G06F3/04817 , G06F3/0482 , G06F3/04847 , G06T3/40 , G06T11/00
CPC分类号： G06F3/04817 , G06F3/0482 , G06F3/04847 , G06T3/40 , G06T11/00 , G06T2200/24
摘要： A display displays an equipment management screen in which icons indicating equipment devices and having a first display size are superimposed on a floor configuration diagram of a building at positions corresponding to installation sites of the equipment devices. A display information generator, upon detection of an operation of specifying display of a group to which the equipment device corresponding to the operated icon belongs, identifies all equipment devices belonging to the specified group, changes display sizes of icons corresponding to the identified equipment devices to a second display size larger than the first display size, displays operation buttons for implementing settings of the identified equipment devices at prescribed positions on the equipment management screen in a superimposed manner, and changes display sizes of icons corresponding to equipment devices not belonging to the specified group to a third display size smaller than the first display size.
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公开(公告)号：US20230213234A1
公开(公告)日：2023-07-06
申请号：US18184308
申请日：2023-03-15
发明人： Hiroyuki NAGAI , Ken MIURA
CPC分类号： F24F11/84 , F24F1/16 , F25B6/04 , F25B2600/25
摘要： According to one embodiment, in a low speed drive of outdoor fans, a first flow rate adjusting valve in a main outdoor heat exchanger side is narrowed to a closing degree or a close range thereof, and an opening degree of a second flow rate adjusting valve is controlled such that a supercooling degree of refrigerant in auxiliary outdoor heat exchangers becomes constantly a target value.
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