4584 patents
Page 9 of 230
Utility
Decorative panel and indoor unit
7 Nov 23
Yoshie Nakaya, Tatsuo Furuta, Keisuke Tomomura
Filed: 28 Nov 18
Utility
Heat exchanger and air-conditioning apparatus
7 Nov 23
A heat exchanger includes plural heat transfer tubes disposed with a specified spacing from each other in the up and down direction, and a distributor configured to distribute refrigerant to the heat transfer tubes.
Kosuke Miyawaki, Yoji Onaka, Yohei Kato
Filed: 22 Aug 18
Utility
Semiconductor device reliability evaluation apparatus and semiconductor device reliability evaluation method
7 Nov 23
A direct-current power supply applies a DC voltage to test semiconductor devices.
Chihiro Kawahara, Yukihiko Wada
Filed: 19 Apr 19
Utility
Support device and storage medium
7 Nov 23
A design support device includes an operation reception unit that receives an operation from a user, a program creation unit that creates a ladder program in accordance with the operation received by the operation reception unit, and a circuit block extraction unit that extracts a circuit block from the ladder program when the circuit block is formed and a predetermined condition is satisfied.
Kenta Tomonaga, Tomo Horikawa
Filed: 9 Jan 20
Utility
Object recognition apparatus, object recognition method, and computer readable medium
31 Oct 23
An extraction unit (101) extracts as a stationary object-detection point, a detection point on a stationary object among a plurality of detection points around a vehicle (200), the plurality of detection points being detected by an outside-detection sensor (501) at a plurality of detection timings.
Ryota Sekiguchi, Koji Iida
Filed: 28 Nov 19
Utility
Semiconductor device comprising a lead electrode including a through hole
31 Oct 23
An object is to provide a semiconductor device in which heat generated in a lead electrode when conducting a large current can be reduced and the bonding quality between the lead electrode and a semiconductor element can be inspected easily.
Kazuhisa Osada, Yuki Yano, Satoru Ishikawa, Shohei Ogawa
Filed: 4 Jan 22
Utility
Semiconductor device and power conversion device
31 Oct 23
The present invention relates to a semiconductor device, wherein the semiconductor substrate includes: a semiconductor layer; and a well region, the semiconductor device includes: a surface electrode provided on a second main surface on a side opposite to a first main surface; a back surface electrode provided on the first main surface; and an upper surface film covering an end edge portion of the surface electrode and at least part of an outer side region outside an end surface of the surface electrode of the semiconductor substrate, the well region includes a portion extending to the outer side region and a portion extending to an inner side region inside the end surface of the surface electrode, and the upper surface film includes at least one outer peripheral opening part provided along an outer periphery of the surface electrode away from the surface electrode of the outer side region.
Kohei Ebihara, Shiro Hino, Kosuke Miyazaki, Yasushi Takaki
Filed: 29 Jan 19
Utility
Motor having stator and rotor configured to reduce eddy current loss, and compressor and air conditioner incorporating same
31 Oct 23
A rotor core has steel laminations stacked in the axial direction, and a permanent magnet is embedded in the rotor core.
Masahiro Nigo
Filed: 27 Jul 18
Utility
Power converting apparatus, motor driving apparatus, and air conditioner
31 Oct 23
A power converting apparatus includes: a bridge circuit that includes at least two legs each including switching elements connected in series, and converts an alternating-current voltage output from an alternating-current power supply into a direct-current voltage; a power-supply current detecting unit that detects a current from the alternating-current power supply; a zero crossing detecting unit that detects a voltage polarity of the alternating-current power supply; and a control unit that controls ON and OFF of the switching elements depending on outputs of the power-supply current detecting unit and the zero crossing detecting unit, in which a dead time that is set for switching and includes a change in the voltage polarity of the alternating-current power supply is longer than a dead time that is set for switching and does not include a change in the polarity.
Keisuke Uemura, Satoru Ichiki, Takuya Shimomugi, Koichi Arisawa, Kenji Iwazaki
Filed: 28 Sep 18
Utility
Power converting apparatus, motor driving apparatus, and air conditioner
31 Oct 23
A power converting apparatus includes: a reactor that includes a first terminal and a second terminal, the first terminal being connected to an alternating-current power supply; a bridge circuit that is connected to the second terminal of the reactor, includes at least one or more switching elements, and converts an alternating-current voltage output from the alternating-current power supply into a direct-current voltage; a power-supply current detecting unit that detects a current from the alternating-current power supply; and a control unit that controls ON and OFF of the switching elements depending on a current value detected by the power-supply current detecting unit, in which two or more current thresholds for controlling ON and OFF of the switching elements are included.
Keisuke Uemura, Satoru Ichiki, Takuya Shimomugi, Koichi Arisawa, Kenji Iwazaki
Filed: 28 Sep 18
Utility
Power converter
31 Oct 23
A power converter includes an inverter circuit connected between the positive and negative terminals of a DC power supply, three single-phase bridge circuits each connected in series between an AC terminal of one of different phases of the inverter circuit and a motor, and a power conversion controller that generates gate signals to control operations of the inverter circuit and the three single-phase bridge circuits based on phase voltage commands.
Tetsuya Kojima, Hisatoshi Fukumoto, Kenji Fujiwara, Akihiko Iwata
Filed: 25 Jun 19
Utility
Motor drive system and air conditioner
31 Oct 23
A motor drive system includes: an inverter that drives a motor; a current detector that detects and outputs the first signal that is a current value of a current flowing through the inverter; a first low-pass filter that removes a noise frequency component from the first signal and outputs a second signal that is a current value after the noise frequency component has been removed; a demagnetization current determiner that compares a demagnetization current threshold with the second signal, and outputs a demagnetization protection signal when the second signal takes a value larger than the demagnetization current threshold; and a short circuit determiner that compares a third signal with a short circuit and outputs an anomaly signal for stopping the inverter when the third signal takes a value larger than or equal to the short circuit threshold.
Tomohiro Kutsuki, Shinji Sakai
Filed: 24 Oct 19
Utility
Induction cooker
31 Oct 23
An induction cooker includes a first coil, a second coil, a third coil, and a controller.
Jun Bunya, Ikuro Suga, Miyuki Takeshita, Ryota Asakura, Kazuhiro Kameoka
Filed: 8 Nov 17
Utility
Screw compressor
31 Oct 23
A screw compressor has a slide valve movement mechanism that includes a cylinder provided in a casing body, a piston partitioning an interior of the cylinder into a first chamber and a second chamber, and a communication flow passage through which the second chamber communicates with a low-pressure space.
Masahiro Kanda, Shun Okada
Filed: 26 Nov 19
Utility
Outdoor unit of air-conditioning apparatus
31 Oct 23
An outdoor unit of an air-conditioning apparatus includes a housing, a heat exchanger, a bottom plate, a drainage structure, and a heater.
Misaki Shimazaki, Kei Furukubo, Kazuhisa Iwasaki
Filed: 18 Jan 19
Utility
Outdoor unit for air-conditioning apparatus and air-conditioning apparatus
31 Oct 23
An outdoor unit for an air-conditioning apparatus includes a housing; a compressor provided in the housing and configured to compress refrigerant; an outdoor heat exchanger provided in the housing and allowing refrigerant and air to exchange heat with each other; a partition plate provided in the housing and partitioning an inside of the housing into a fan chamber and a machine chamber in which the compressor is provided; an electronic component provided in the machine chamber; a refrigerant pipe provided in the machine chamber and connecting the compressor and the outdoor heat exchanger and disposed above the electronic component; a valve connected to the refrigerant pipe in the machine chamber and disposed above the electronic component; and a drip inhibiting portion that covers the refrigerant pipe and a lower part of the valve and inhibits water dripping from the refrigerant pipe from dripping onto the electronic component.
Hidetaka Yamauchi, Kentaro Yonehara, Hiroyuki Jinnai, Toshiyuki Kubono
Filed: 1 Aug 19
Utility
Air-conditioning apparatus
31 Oct 23
An air-conditioning apparatus includes: an outdoor unit including a compressor that compresses and discharges refrigerant to a refrigerant circuit; an indoor unit including a load-side heat exchanger that causes heat exchange to be performed between air in an air-conditioned space and a heat medium subjected to heat exchange with the refrigerant; a flow rate detection unit that detects a flow rate of the heat medium; and an alarm unit provided in the indoor unit.
Kimitaka Kadowaki
Filed: 21 Sep 18
Utility
Controller of air conditioning apparatus, outdoor unit, relay unit, heat source unit, and air conditioning apparatus
31 Oct 23
An air conditioning apparatus includes: a second heat exchanger; a plurality of third heat exchangers; and a plurality of flow rate control valves.
Naoki Kato, Yuji Motomura, Naofumi Takenaka, Kimitaka Kadowaki
Filed: 5 Feb 19
Utility
Outdoor unit, air conditioner, and operation control method for air conditioner
31 Oct 23
An outdoor unit includes a heat exchanger, a fan having a motor having coils to blow air to the heat exchanger, a connection switching unit to switch a connection state of the coils between a first connection state and a second connection state in which a line voltage is lower than a line voltage in the first connection state, and a temperature sensor to detect a temperature.
Atsushi Ishikawa
Filed: 20 May 19
Utility
Information processing device and air conditioning system
31 Oct 23
Each of plurality of personal terminals is configured to acquire first data indicating a result of inputting whether a possessor is comfortable, second data indicating a terminal location, and third data indicating a temperature at the terminal location.
Yasushi Sato, Takanori Kyoya
Filed: 28 Apr 20