-
61.外观设计公开(公告)号：USD937311S1
公开(公告)日：2021-11-30
申请号：US29747952
申请日：2020-08-26
Designer： Yan Ding , Yuan Yuan , Chiayen Hsieh
-
公开(公告)号：US11041667B2
公开(公告)日：2021-06-22
申请号：US16360189
申请日：2019-03-21
Inventor： Atsuhiko Yokozeki , Koji Naito , Kazuhito Sekiba , Shoutaro Yamamoto , Hiroaki Kaneko , Kazuhiko Tani
Abstract: To achieve higher efficiency at a low-load region and to enable power saving throughout a year. The refrigeration cycle apparatus 1 includes a compressor 4 that has a flow in/out port 4d through which a refrigerant is capable of flowing out and flowing in, in fluid communication with a compression room 4c; pipes 21, 22 disposed at a suction side of the compressor 4; a pipe 25 connected to the flow in/out port 4d of the compressor 4; a pipe 27 that has one end connected to the pipe 25 and an opposite end connected to the pipe 21; and a second solenoid valve 13 for opening and closing a fluid passage of the pipe 27.
-
公开(公告)号：US10962251B2
公开(公告)日：2021-03-30
申请号：US16294433
申请日：2019-03-06
Inventor： Yasutaka Yoshida , Koji Naito , Hayato Mori , Robert D. Turney , Mohammad N. ElBsat , Michael J. Wenzel
IPC: F24F11/47 , F24F11/63 , F24F140/60
Abstract: An air conditioner controller for an air conditioner is configured to obtain a first value of a performance value from a predetermined component of the air conditioner, and estimate a total cost. The controller is configured to estimate the total cost including an operation cost and a renewal cost of the air conditioner based on the first value of the performance variable obtained from the predetermined component of the air conditioner and a second value of the performance variable estimated by an operational model of the air conditioner. The total cost is a total cost of operating and renewing the air conditioner for a time period after a time at which the first value of the performance variable is obtained. The controller is configured to output the total cost via a user interface.
-
公开(公告)号：US10804835B2
公开(公告)日：2020-10-13
申请号：US16099501
申请日：2018-04-27
Inventor： Shinya Fukuda , Takashi Oishi , Toru Nakai
IPC: H02M7/493 , H02P27/06 , H02P29/024 , F25B49/02
Abstract: A controller controls a first inverter drive circuit and a second inverter drive circuit. The first inverter drive circuit drives a load having a load current larger than the second inverter drive circuit. The first inverter drive circuit includes a control ground terminal and a drive ground terminal which are isolated from each other. The ground terminal of the second inverter drive circuit is connected to the ground of the controller. The control ground terminal of the first inverter drive circuit is connected to the ground of the controller. The drive ground terminal of the first inverter drive circuit is connected to the negative side of the first inverter circuit.
-
公开(公告)号：US10651774B2
公开(公告)日：2020-05-12
申请号：US15740152
申请日：2016-05-26
Inventor： Dongsheng Li , Yasuo Notohara , Yuuji Yamamoto
Abstract: An inverter, motor drive device and freezing device, with which it is possible to effectively suppress current beats in the event of over-modulation without requiring additional circuits. This motor driving device includes: a rectifier circuit that converts the AC voltage from an AC power supply into a DC voltage; a smoothing capacitor that smoothes the DC voltage output from the rectifier circuit; an inverter circuit that converts the DC voltage output from the smoothing capacitor into an AC voltage; and a controller that reduces the current beat component by estimating, using a phase locked loop process, the frequency, phase and amplitude of the current beat component in the output current of the inverter circuit, and corrects the voltage command to the inverter circuit on the basis of the estimated frequency, phase and amplitude.
-
Patent Agency Ranking
公开(公告)号：US10608570B2
公开(公告)日：2020-03-31
申请号：US15767200
申请日：2017-10-18
Inventor： Yoji Ogura , Kazuhiro Ueta , Kenji Tamura , Wataru Hatsuse
Abstract: A boosting operation of a converter and the intermittent energization operation of an inverter are optimally performed in accordant with input or output. The power converter includes the converter capable of boosting a DC voltage outputted by switching operation alternately performing shorting and rectification; the inverter; an inverter capable of performing intermittent energization in which switching around zero cross of a motor current is turned off upon converting the DC voltage outputted by the converter into three-phase AC power; and a controller that controls the converter to perform boosting operation and the inverter to perform the boosting operation of the converter and the intermittent energization operation of the inverter linkingly.
-
公开(公告)号：US10594239B2
公开(公告)日：2020-03-17
申请号：US16076732
申请日：2017-11-09
Inventor： Dongsheng Li , Ken Kishita
IPC: H02P21/05 , H02P21/18 , H02P21/22 , F25B31/02 , H02M7/5387 , H02P27/12 , H02M1/14 , H02M7/48 , H02M1/12 , H02M7/5395 , H02M1/00
Abstract: A motor drive that enables the elimination of distortion of a motor current caused by direct current voltage ripples with the use of a smoothing capacitor having a small capacity and refrigeration equipment. A motor drive includes a rectifier circuit, a smoothing capacitor, voltage detector, an inverter circuit, current sensor, and a controller configured to control the inverter circuit. The controller has a voltage controller configured to generate a voltage command value used for controlling the motor, a ripple frequency arithmetic unit configured to operate a ripple frequency included in the direct current voltage signal, and a harmonic suppressor configured to process a signal based on the direct current signal using an S controller having a gain near the ripple frequency and output a corrected amount. The inverter circuit is controlled based on a signal that the voltage command value is corrected using the corrected amount.
-
公开(公告)号：US20200063983A1
公开(公告)日：2020-02-27
申请号：US16424754
申请日：2019-05-29
Inventor： Taku IWASE , Tomohiko SATO , Yoko SATO , Kunihito KAWAMURA , Koutarou NOMURA , Naoyuki FUSHIMI , Shinji NAKAHATA
IPC: F24F1/0047 , F04D29/70 , F24F13/20 , F24F13/30
Abstract: Provided is an indoor unit of an air-conditioner including: an indoor unit body configured to be provided in a ceiling; a suction port attached to a lower surface of the indoor unit body; a panel including a blow port for blowing conditioned air into a room; and a louver provided at the blow port of the panel to change an air sending direction. The panel includes an outer frame provided outside the blow port and provided with a substantially horizontal flat portion, and a protruding portion provided on the flat portion of the outer frame and protruding vertically downward. A lower end of the protruding portion is positioned vertically above a lower end of the louver. A lower end of an inner flow path wall surface forming a flow path wall surface inside the blow port is positioned vertically below the lower end of the louver.
-
69.发明授权公开(公告)号：US10570323B2
公开(公告)日：2020-02-25
申请号：US16360173
申请日：2019-03-21
Inventor： Ryo Ota , Koji Naito , Yasutaka Yoshida
Abstract: Provided is a refrigerant composition as a mixed refrigerant containing refrigerant components of difluoromethane (HFC32), pentafluoroethane (HFC125), and hexafluoropropene (FO1216). The makeup of the refrigerant components in the mixed refrigerant is configured such that a global warming potential (GWP) is 750 or less, a vapor pressure at 25° C. is in a range of 1.4 to 1.8 MPa, and a flame retardant parameter Fmix represented by formula (1) below is 0.46 or more. Fmix=ΣiFixi (1) Here, Fmix indicates a flame retardant parameter of the refrigerant composition, Fi indicates a flame retardant parameter of each of the refrigerant components, and xi indicates a molar fraction of each of the refrigerant components.
-
公开(公告)号：US10557648B2
公开(公告)日：2020-02-11
申请号：US15618321
申请日：2017-06-09
Inventor： Koji Naito , Naoyuki Fushimi , Kazumoto Urata , Gen Yasuda , Kazunori Fukuda
Abstract: A cooling/heating switching unit includes first to third fittings, expansion valves and expansion-valve driving sections, a housing, a heat insulating material, and a refrigerant leak detection sensor. The first and second fittings respectively connect with a high/low-pressure-gas main pipe and a low-pressure-gas main pipe, which are linked to an outdoor unit. The third fitting connects with an indoor-unit connection pipe, which is linked to indoor units. The expansion valve for high/low-pressure-gas pipe, the expansion valve for low-pressure-gas pipe, and expansion-valve driving sections selectively connect the first or second fitting with the third fitting via a refrigerant pipe to control a flow direction of refrigerant. The housing houses the refrigerant pipe. The heat insulating material fills inside of the housing to insulate the refrigerant pipe arranged inside of the housing from heat. The refrigerant leak detection sensor is installed outside of the housing to detect leaked refrigerant.
-
-
-
-
-
-
-
-
-
Search Results
141
records
(took 0.026 seconds)
