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公开(公告)号：US20190041085A1
公开(公告)日：2019-02-07
申请号：US16075700
申请日：2016-04-27
Applicant: Mitsubishi Electric Corporation
Inventor： Atsushi KONO , Takashi IKEDA , Masahiko TAKAGI
Abstract: An air conditioner has a casing and a wind direction changing device. The casing has an air inlet, an air outlet, an outer air path wall, and an inner air path wall. The wind direction changing device has an up-down rotation shaft and a deflector. The deflector extends from the up-down rotation shaft toward the outer air path wall. The deflector has an outer air path wall-side end which faces the outer air path wall and has a first arc shape.
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公开(公告)号：US20180313591A1
公开(公告)日：2018-11-01
申请号：US15768264
申请日：2016-12-21
Applicant: Mitsubishi Electric Corporation
Inventor： Koichi OBARA , Masahiko TAKAGI , Yasuhiro SUZUKI , Kenyu TANAKA
IPC: F25B49/02
Abstract: An indoor unit of an air-conditioning apparatus includes: a casing; a drain pan, which is provided inside the casing, and is configured to receive condensate water generated in the load-side heat exchanger; and a refrigerant detection unit provided below the drain pan inside the casing. The refrigerant detection unit includes: a sensor configured to detect leakage of the refrigerant; and a sensor cover configured to cover the sensor from a front surface side of the sensor. The sensor cover includes: a roof portion arranged above the sensor; and a side surface portion arranged on the front surface side or a side surface side of the sensor below the roof portion. The roof portion has an eaves portion projecting outward with respect to the side surface portion, and the side surface portion has at least one first opening port configured to introduce air to an inside of the sensor cover therethrough.
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公开(公告)号：US20180299169A1
公开(公告)日：2018-10-18
申请号：US15768122
申请日：2015-12-21
Applicant: Mitsubishi Electric Corporation
Inventor： Yasuhiro SUZUKI , Masahiko TAKAGI , Kenyu TANAKA , Kazuki WATANABE
Abstract: A refrigeration cycle apparatus includes a refrigerant circuit through which refrigerant is circulated, a heat exchanger unit that accommodates a heat exchanger of the refrigerant circuit and a fan, a temperature sensor disposed in an area of the refrigerant circuit adjacent to a brazed connection or in an area of the refrigerant circuit adjacent to a joint between refrigerant pipes, and a controller configured to determine the presence of refrigerant leakage based on a temperature detected by the temperature sensor. The temperature sensor is covered by a heat insulation material together with the brazed connection or the joint. The controller activates the fan upon determining that refrigerant leakage is present, and is triggered to deactivate the fan in response to the time variation of the temperature detected by the temperature sensor becoming positive.
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公开(公告)号：US20150201519A1
公开(公告)日：2015-07-16
申请号：US14512543
申请日：2014-10-13
Applicant: Mitsubishi Electric Corporation
Inventor： Shinya KANEOYA , Masahiko TAKAGI
CPC classification number: H05K7/1427 , F24F1/0007 , F24F13/20 , F24F2013/207 , H05K5/0247
Abstract: An electric component box that accommodates therein an electric component, which includes: a control board that controls an air conditioner indoor unit; a power supply and indoor-outdoor wiring terminal block that is provided on the control board and is connected to a communication wire wired from the air conditioner indoor unit to an air conditioner outdoor unit and is connected to a power wire that supplies power; and a communication-wire terminal block that is provided on the control board and is connected to a communication wire for an external input.
Abstract translation: 一种容纳电气部件的电气部件箱，包括：控制空调室内机的控制基板; 电源和室内 - 室外接线端子块，设置在控制板上并连接到从空调室内单元连接到空调室外单元的通信线路，并连接到供电的电源线; 以及设置在控制板上并连接到用于外部输入的通信线的通信线端子块。
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公开(公告)号：US20150071781A1
公开(公告)日：2015-03-12
申请号：US14471046
申请日：2014-08-28
Applicant: Mitsubishi Electric Corporation
Inventor： Makoto KURIHARA , Kohei TSUNETOMO , Masahiko TAKAGI
CPC classification number: F01D25/06 , F01D5/225 , F04D17/10 , F04D29/282 , F04D29/30 , F04D29/666 , F05D2260/96
Abstract: A centrifugal fan includes a main plate fixed to a rotating shaft of a drive unit, a shroud having an air suction port, and a plurality of blades disposed between the main plate and the shroud. A rib for reinforcement is formed in each of the blades. Deformation due to an external pressure can be suppressed, the main plate, the shroud, and the blades are firmly fixed to each other, and a decrease in reliability, generation of noise, and the like due to deformation are suppressed.
Abstract translation: 离心式风扇包括固定到驱动单元的旋转轴的主板，具有空气吸入口的护罩和设置在主板和护罩之间的多个叶片。 在每个叶片中形成用于加强的肋条。 可以抑制由外部压力引起的变形，主板，护罩和叶片彼此牢固地固定，并且抑制了由于变形引起的可靠性降低，噪音产生等。
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Patent Agency Ranking
公开(公告)号：US20230375194A1
公开(公告)日：2023-11-23
申请号：US18248475
申请日：2020-11-27
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroyasu HAYASHI , Takuya TERAMOTO , Hidetoshi SEKI , Masahiko TAKAGI , Kazuki WATANABE
CPC classification number: F04D29/441 , F04D29/4226 , F04D29/422
Abstract: An air-conditioning apparatus includes: a centrifugal air-sending device including a fan and a scroll casing having a tongue portion and a discharge portion, and a housing having a housing suction port and a discharge portion. A trailing edge of a blade located closest to a wall portion of the housing is a first trailing edge portion, and a leading edge of a blade located closest to the tongue portion is a first leading edge portion. In a first region, a boundary portion located closest to the tongue portion is located between first and second straight lines. The first straight line passes through a rotation axis of the fan and the first trailing edge portion, the second straight line is parallel to the first straight line and passes through the first leading edge portion, and the first region forms part of the housing suction port close to the tongue portion.
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公开(公告)号：US20230039252A1
公开(公告)日：2023-02-09
申请号：US17790334
申请日：2021-02-10
Applicant: Mitsubishi Electric Corporation
Inventor： Kazuki WATANABE , Masahiko TAKAGI
Abstract: An air-conditioning apparatus having a refrigerant circuit, in which a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger are connected by a pipe and refrigerant circulates in the pipe, includes an indoor fan configured to supply an indoor air to the indoor heat exchanger, and a controller configured to control the compressor and the indoor fan. The controller is configured to run the compressor at a start of a cooling operation, start running the indoor fan at less than a set minimum wind velocity after a first set time has elapsed since the compressor started operating, run the indoor fan at the set minimum wind velocity after a second set time has elapsed since the indoor fan started operating at less than the set minimum wind velocity, and run the indoor fan at a set wind velocity after a third set time has elapsed since the indoor fan started operating at the set minimum wind velocity.
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公开(公告)号：US20210199360A1
公开(公告)日：2021-07-01
申请号：US17273418
申请日：2018-11-28
Applicant: Mitsubishi Electric Corporation
Inventor： Kazuki WATANABE , Masahiko TAKAGI
Abstract: An air-conditioning apparatus is provided with an indoor unit and an outdoor unit connected to each other via a refrigerant pipe through which refrigerant flows. The air-conditioning apparatus includes a refrigerant detection unit configured to detect leakage of the refrigerant in the indoor unit, a notification unit configured to provide a notification of occurrence of leakage of the refrigerant, a communication unit capable of communicating with an external terminal device via a network, and a controller configured to control at least the notification unit and the communication unit. The notification unit includes at least one of a display unit and a speaker disposed on a surface of a casing of the indoor unit, and the external terminal device, in addition to a display unit disposed on a remote controller for operating the indoor unit. When leakage of the refrigerant is detected by the refrigerant detection unit, the controller controls the notification unit and the communication unit to provide a notification of occurrence of leakage of the refrigerant. Accordingly, a warning notification of refrigerant leakage is provided not only from the notification unit disposed on the indoor unit, but also from the external terminal device to attract more attention to the notification even from a user not in the vicinity of the indoor unit such that the user easily notices the notification and becomes fully aware of the refrigerant leakage.
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公开(公告)号：US20200072495A1
公开(公告)日：2020-03-05
申请号：US16333806
申请日：2016-12-19
Applicant: Mitsubishi Electric Corporation
Inventor： Susumu FUJIWARA , Kazuki ISOMURA , Masahiko TAKAGI , Makoto KURIHARA
IPC: F24F13/24 , F24F1/0029 , F04D29/66
Abstract: An air-conditioning apparatus includes a housing having an air inlet and an air outlet, a fan disposed in the housing, and a bell mouth through which a fluid flowing from the air inlet to the air outlet passes in association with rotation of the fan. The bell mouth includes curved part having a curved sectional shape in a fluid flow direction and a vibration-damping element disposed on at least one of a front surface and a rear surface of the curved part. The vibration-damping element is disposed at a position corresponding to a node of vibration of the bell mouth.
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公开(公告)号：US20190017718A1
公开(公告)日：2019-01-17
申请号：US16068958
申请日：2016-03-23
Applicant: Mitsubishi Electric Corporation
Inventor： Yasuhiro SUZUKI , Masahiko TAKAGI , Kenyu TANAKA , Kazuki WATANABE , Naoya MATSUNAGA , Teppei HIGUCHI
Abstract: A refrigeration cycle apparatus includes a refrigeration cycle circuit which includes a plurality of load-side heat exchangers; a plurality of indoor units which accommodate the plurality of load-side heat exchangers, respectively; and a controller which controls the plurality of indoor units. Each of the plurality of indoor units includes an air-sending fan. At least one of the plurality of indoor units includes a refrigerant detection unit. The controller divides the plurality of indoor units into one or more groups. The controller is set such that when refrigerant is detected by the refrigerant detection unit included in any of the plurality of indoor units, the controller causes the air-sending fans included in all the indoor units which belong to a same group as the indoor unit which includes the refrigerant detection unit which detects the refrigerant to be operated.
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