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公开(公告)号：US20230221050A1
公开(公告)日：2023-07-13
申请号：US18000320
申请日：2020-06-09
IPC分类号： F25B49/02
CPC分类号： F25B49/02 , F25B2700/21 , F25B2313/0315
摘要： A refrigeration cycle apparatus comprises a refrigerant circuit, a water circuit, and a control device. The refrigerant circuit includes a compressor, a four-way valve, a heat exchanger, a fan, a diaphragm mechanism, a water heat exchanger, and an accumulator. Based on a value of a low-pressure sensor or a high-pressure sensor and a water temperature on an outlet side of the water heat exchanger, the refrigeration cycle apparatus determines whether or not there is an abnormality due to dirtiness adhered to a plate inside the water heat exchanger.
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公开(公告)号：US20160146488A1
公开(公告)日：2016-05-26
申请号：US14900640
申请日：2013-07-10
CPC分类号： F24F11/30 , F24F11/32 , F24F11/36 , F24F11/89 , F24F2110/00 , F25B13/00 , F25B2313/006 , F25B2313/0233 , F25B2313/02741 , F25B2313/0314 , F25B2313/0315 , F25B2400/08 , F25B2500/19 , F25B2500/222 , F25B2600/05 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152
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.
摘要翻译： 一种制冷循环装置包括将制冷剂循环到压缩机，室内热交换器，膨胀阀和室外热交换器的制冷剂回路，所述压缩机通过气体延伸管与室内热交换器连接，所述膨胀阀为 通过液体延伸管连接到室外热交换器; 压力传感器和温度传感器，以检测制冷剂回路的运行状态量; 以及控制器，其基于由压力传感器和温度传感器检测出的运转状态量，通过计算制冷剂回路中的制冷剂量来执行检测制冷剂泄漏的制冷剂泄漏检测操作，并将所计算的制冷剂量与参考制冷剂量进行比较 。 在制冷剂泄漏检测动作中，控制器将液体延伸管的出口处的制冷剂的质量控制在0.1〜0.7的范围内。
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公开(公告)号：US20240044539A1
公开(公告)日：2024-02-08
申请号：US18258243
申请日：2021-02-15
CPC分类号： F24F11/63 , G05B23/0245
摘要： An operation data acquisition unit acquires from an air conditioning system, operation data of the air conditioning system. A model application determination unit determines whether or not the operation data satisfies an application condition for applying the operation data to an inference model for inferring status of the air conditioning system. Further, the model application determination unit stores the operation data into an operation data holding unit as pending operation data, when the operation data does not satisfy the application condition. A model updating unit determines whether or not the pending operation data is operation data suitable for an update of the inference model, and updates the inference model using the pending operation data, when it is determined that the pending operation data is the operation data suitable for the update of the inference model.
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4.发明申请公开(公告)号：US20180051922A1
公开(公告)日：2018-02-22
申请号：US15554253
申请日：2015-04-30
发明人： Yasutaka OCHIAI , Masaki TOYOSHIMA , Makoto SAITO
IPC分类号： F25B49/02
摘要： A refrigeration cycle apparatus is provided with a compressor, a condenser, a pressure-reducing device, and an evaporator. The refrigeration cycle apparatus comprises a refrigeration cycle configured to circulate refrigerant; and a control unit configured to control the refrigeration cycle. The control unit causes the refrigeration cycle to operate when an operation condition is satisfied, the operation condition including elapse of a preset time after the control unit stops the refrigeration cycle. The control unit detects abnormality of the refrigeration cycle based on state data indicating a state of the refrigeration cycle after the control unit causes the refrigeration cycle to operate.
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5.发明申请公开(公告)号：US20170268811A1
公开(公告)日：2017-09-21
申请号：US15510709
申请日：2014-11-04
CPC分类号： F25B49/02 , F24F11/36 , F24F11/38 , F25B13/00 , F25B41/062 , F25B49/005 , F25B2313/0233 , F25B2313/0314 , F25B2313/0315 , F25B2400/13 , F25B2500/04 , F25B2500/16 , F25B2500/222 , F25B2500/27 , F25B2600/2513 , F25B2700/1931 , F25B2700/1933 , F25B2700/2106 , F25B2700/21151 , F25B2700/21152
摘要： A refrigeration cycle apparatus includes a refrigeration cycle in which refrigerant circulates, the refrigeration cycle including a compressor, an outdoor heat exchanger, expansion valves, and indoor heat exchangers, which are connected to each other via a refrigerant pipe, a heat source unit accommodating the outdoor heat exchanger, use-side units accommodating the indoor heat exchangers, and a control unit that controls at least turning on and off of the refrigeration cycle. The control unit detects abnormality of the refrigeration cycle based on the pressure or temperature of the refrigeration cycle in an off time of the refrigeration cycle.
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公开(公告)号：US20240272034A1
公开(公告)日：2024-08-15
申请号：US18569639
申请日：2021-08-18
发明人： Yusei ONO , Yasutaka OCHIAI , Makoto SAITO , Yoshihiro DOHGAN , Naohiro ICHIKAWA , Katsuya TANIGUCHI
CPC分类号： G01M3/2815 , G01K13/02 , F25B2500/222
摘要： An airtightness testing apparatus includes a differential pressure gauge and a temperature measuring device. The differential pressure gauge measures a differential pressure between the pressure of a fluid in a refrigerant pipe in an air-conditioning apparatus and that in an airtight reference container. The temperature measuring device is connected with the refrigerant pipe to measure the temperature of the fluid therein, and includes a temperature measurement container and a temperature acquisition module. The temperature measurement container communicates with the refrigerant pipe, and can contain the fluid while being sealed. The temperature acquisition module is provided in the temperature measurement container and measures the temperature of the fluid. The temperature measurement container satisfies one or both of a condition that its thermal diffusivity is higher than or equal to that of the refrigerant pipe and a condition that its thermal conductivity is higher than or equal to that of the pipe.
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公开(公告)号：US20230089678A1
公开(公告)日：2023-03-23
申请号：US17909056
申请日：2020-05-20
发明人： Yasutaka OCHIAI
IPC分类号： F25B49/02
摘要： A refrigeration cycle apparatus includes: a refrigerant circuit in which a compressor, a condenser, an expansion device, and an evaporator are connected by pipes, and refrigerant circulates; a high-pressure sensor that detects a pressure of the refrigerant on a discharge side of the compressor; a first temperature sensor that detects a temperature of the refrigerant on an outlet side of the condenser; and a controller that determines that the high-pressure sensor is abnormal, when the compressor is in operation and the temperature detected by the first temperature sensor is higher than a saturated liquid temperature or a saturated gas temperature that is calculated from the pressure detected by the high-pressure sensor.
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公开(公告)号：US20220082313A1
公开(公告)日：2022-03-17
申请号：US17419834
申请日：2019-02-28
发明人： Yasutaka OCHIAI
摘要： During operation of a compressor, an indoor heat exchanger operates as a condenser, a first valve between a second junction portion and a refrigerant flow switching device is closed, and a second valve in a bypass pipe connecting a first junction portion and the second junction portion is opened, a refrigeration cycle apparatus detects an abnormality when a temperature obtained by subtracting a temperature of refrigerant at a gas portion of the indoor heat exchanger measured by a third temperature sensor from a saturation temperature obtained by converting a condensing pressure of the refrigerant is larger than a first threshold temperature, or when a temperature obtained by subtracting a temperature in a room measured by a first temperature sensor from a temperature of refrigerant at a liquid portion of the indoor heat exchanger measured by a second temperature sensor is smaller than a second threshold temperature.
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公开(公告)号：US20220065511A1
公开(公告)日：2022-03-03
申请号：US17418312
申请日：2019-08-01
摘要： A refrigeration cycle apparatus includes a refrigeration cycle circuit, a bypass flow path, a first valve provided in the refrigeration cycle circuit, a second valve provided at the bypass flow path, a first temperature sensor configured to detect a temperature of an indoor space, a second temperature sensor configured to detect a temperature of refrigerant on a liquid side of an indoor heat exchanger, and a notification part. The refrigeration cycle apparatus is able to operate in an operation state where the compressor operates, the indoor heat exchanger functions as an evaporator, and the first valve is open while the second valve is closed. In the operation state, the notification part issues notification of an abnormality of an electronic expansion valve or the first valve when a temperature detected by the second temperature sensor is higher than an evaporation temperature of refrigerant in the refrigeration cycle circuit.
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公开(公告)号：US20240183564A1
公开(公告)日：2024-06-06
申请号：US18550024
申请日：2021-05-10
摘要： When there exists in an outdoor unit a second refrigerant path which enables circulation of refrigerant in the outdoor unit even if circulation of the refrigerant through a first refrigerant path is blocked by closure of a first valve provided in the first refrigerant path which circulates the refrigerant between an indoor unit and the outdoor unit of an air conditioner, a signal transmission unit transmits to the outdoor unit, a command signal commanding the outdoor unit to close a second valve which is provided in the second refrigerant path and closure of which blocks the circulation of the refrigerant through the second refrigerant path. A determination unit determines whether the first valve is closed or not after the command signal is transmitted from the signal transmission unit to the outdoor unit.
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