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    Refrigeration cycle apparatus and liquid level detection sensor
    1.
    发明授权
    Refrigeration cycle apparatus and liquid level detection sensor 有权

    公开(公告)号：US10274357B2

    公开(公告)日：2019-04-30

    申请号：US15505977

    申请日：2014-10-16

    申请人： Mitsubishi Electric Corporation

    发明人： Yasutaka Ochiai ,  Makoto Saito ,  Masaki Toyoshima

    IPC分类号： G01F23/36 ,  F25B43/00 ,  F25B49/02 ,  G01F23/22 ,  F24F11/30 ,  F25B40/04 ,  F25D17/04 ,  H01H35/18 ,  F24F5/00 ,  F25B13/00 ,  F25B40/00

    摘要： Provided is a refrigeration cycle apparatus including: a refrigerant circuit formed by connecting, by a refrigerant pipe, a compressor, a condenser, an expansion device, an evaporator and a liquid reservoir; a liquid level detection sensor including a plurality of heat generating units and a plurality of temperature detection units, the heat generating units being paired with the temperature detection units, and provided in the liquid reservoir, the liquid level detection sensor being configured to detect a liquid level of a refrigerant accumulated in the liquid reservoir, based on a temperature of each of the heat generating units, in which the liquid reservoir includes a container for accumulating the refrigerant, an inlet pipe connected to the refrigerant circuit and configured to allow a portion of the refrigerant flowing out of the container to flow into the container, and in which in the container, a shielding portion is provided between an discharge outlet for the refrigerant of the inlet pipe and the liquid level detection sensor, to prevent the portion of the refrigerant flowing out of the discharge outlet from directly coming into contact with the liquid level detection sensor.

    Air-conditioning ventilation system
    2.
    发明授权
    Air-conditioning ventilation system 有权

    公开(公告)号：US11879658B2

    公开(公告)日：2024-01-23

    申请号：US17288217

    申请日：2019-01-10

    申请人： Mitsubishi Electric Corporation

    发明人： Makoto Saito ,  Yunqing Fan

    IPC分类号： F24F11/77 ,  F24F11/46 ,  F24F11/65 ,  F24F110/20 ,  F24F110/10

    CPC分类号： F24F11/77 ,  F24F11/46 ,  F24F11/65 ,  F24F2110/10 ,  F24F2110/20

    摘要： An air-conditioning ventilation system includes a ventilation device configured to ventilate an air-conditioned space while controlling a ventilation rate, an air-conditioning apparatus that includes a heat exchanger configured to exchange heat between refrigerant and air and that is configured to operate while controlling an air-conditioning capacity thereof to bring an indoor temperature in the air-conditioned space to a setting temperature, and a controller. The controller performs normal control that causes the ventilation device to operate to ventilate the air-conditioned space at a ventilation rate corresponding to the air-conditioning capacity of the air-conditioning apparatus, and recovery control that controls the ventilation rate of the ventilation device such that an integrated value of an amount of ventilation for a time duration from activation of the ventilation device under the normal control falls within a standard ventilation range including a standard integrated value of an amount of ventilation obtained by causing the ventilation device to operate to ventilate the air-conditioned space at a standard ventilation rate for a time duration having a same length as the time duration.

    LIQUID LEVEL DETECTION DEVICE AND REFRIGERATION CYCLE
    5.
    发明申请
    LIQUID LEVEL DETECTION DEVICE AND REFRIGERATION CYCLE 有权
    液位检测装置和制冷循环

    公开(公告)号：US20150292932A1

    公开(公告)日：2015-10-15

    申请号：US14432559

    申请日：2013-05-21

    申请人： Mitsubishi Electric Corporation

    发明人： Yasutaka Ochiai ,  Makoto Saito ,  Fumitake Unezaki

    IPC分类号： G01F23/24

    CPC分类号： G01F23/246 ,  G01F23/22

    摘要： A liquid level detection device at least includes a heating member that heats a container, a temperature measurement element disposed on a side of the heating member opposite to the container, a thermal conductor disposed between the heating member and the container, an elastic body that presses the heating member with a certain amount of force, a terminals for supplying power to the heating member, a fixture that covers the heating member, the temperature measurement element, the thermal conductor, the elastic body and the terminals and mount those on the container, wherein the heating member does not come into contact with the terminals when at least one of the thermal conductor and the fixture is inappropriately mounted on a container.

    摘要翻译： 液面检测装置至少包括加热容器的加热构件，设置在加热构件与容器相对的一侧的温度测量元件，设置在加热构件和容器之间的热导体，压入 具有一定力的加热构件，用于向加热构件供电的端子，覆盖加热构件的夹具，温度测量元件，导热体，弹性体和端子并将其安装在容器上， 其中当热导体和固定装置中的至少一个不适当地安装在容器上时，加热构件不与端子接触。

    Refrigeration apparatus and method for operating refrigeration apparatus
    6.
    发明授权
    Refrigeration apparatus and method for operating refrigeration apparatus 有权

    公开(公告)号：US10571159B2

    公开(公告)日：2020-02-25

    申请号：US15743309

    申请日：2015-08-04

    申请人： Mitsubishi Electric Corporation

    发明人： Makoto Saito

    IPC分类号： F25B13/00 ,  F25B47/02 ,  F25B49/02 ,  F25B31/00 ,  F25B41/04

    摘要： A refrigeration apparatus is equipped with a heat source unit, a cooling unit, a low-pressure gas tube, and a bypass circuit. In the heat source unit, a compressor, a condenser, and a tube are housed. The compressor has a variable operating capacity, and sucks, compresses, and discharges refrigerant. The condenser condenses the refrigerant compressed by the compressor. The tube connects the compressor with the condenser. In the cooling unit, an expansion valve and a cooler are housed. The expansion valve decompresses the refrigerant condensed by the condenser. The cooler evaporates the refrigerant decompressed by the expansion valve. The low-pressure gas tube connects the cooler with the compressor. The bypass circuit connects the tube located in the heat source unit with the low-pressure gas tube located in the cooling unit.

    Refrigeration cycle apparatus
    9.
    发明授权
    Refrigeration cycle apparatus 有权

    公开(公告)号：US10113763B2

    公开(公告)日：2018-10-30

    申请号：US14900640

    申请日：2013-07-10

    申请人： Mitsubishi Electric Corporation

    发明人： Yasutaka Ochiai ,  Fumitake Unezaki ,  Makoto Saito ,  Kazuhiro Komatsu ,  Junji Hori

    IPC分类号： F25B45/00 ,  F24F11/30 ,  F25B13/00 ,  F24F11/89 ,  F24F110/00 ,  F24F11/32 ,  F24F11/36

    摘要： A refrigeration cycle apparatus Including a refrigerant circuit configured to circulate refrigerant to a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger, the compressor being connected to the indoor heat exchanger by a gas extension pipe, the expansion valve being connected to the outdoor heat exchanger by a liquid extension pipe; pressure sensors and temperature sensors to detect an operating state amount of the refrigerant circuit; and a controller to execute refrigerant-leakage detection operation of detecting refrigerant leakage by calculating a refrigerant amount in the refrigerant circuit based on the operating state amount detected by the pressure sensors and the temperature sensors, and comparing the calculated refrigerant amount with a reference refrigerant amount. The controller controls a quality of the refrigerant at an outlet of the liquid extension pipe to be in a range from 0.1 to 0.7 in the refrigerant-leakage detection operation.

    Refrigerating apparatus
    10.
    发明授权
    Refrigerating apparatus 有权

    公开(公告)号：US10082325B2

    公开(公告)日：2018-09-25

    申请号：US14908686

    申请日：2013-09-10

    申请人： Mitsubishi Electric Corporation

    发明人： Makoto Saito ,  Fumitake Unezaki

    IPC分类号： F25B47/00 ,  F25B47/02 ,  F28D20/00

    CPC分类号： F25B47/022 ,  F25B2400/13 ,  F25B2400/24 ,  F28D20/00

    摘要： A refrigerating apparatus includes: a refrigerating circuit in which a refrigerant that is discharged from a compressor is conveyed under pressure sequentially to a first flow rate controlling apparatus, a heat storing tank, a condenser, a first decompressing apparatus, and an evaporator, and is recycled to the compressor; a defrosting circuit in which the refrigerant that is discharged from the compressor is conveyed under pressure sequentially to the first flow rate controlling apparatus, the heat storing tank, the first decompressing apparatus, and the evaporator, and is recycled to the compressor; and a flow channel switching apparatus that connects an outlet side of the heat storing tank to an inlet side of the condenser or to an inlet side of the first decompressing apparatus to form the refrigerating circuit or the defrosting circuit.