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公开(公告)号：US20150135750A1
公开(公告)日：2015-05-21
申请号：US14516617
申请日：2014-10-17
Applicant: Mitsubishi Electric Corporation
Inventor： Takahiro USHIJIMA
CPC classification number: F25B49/02 , F24D3/18 , F24D19/1039 , F24D2200/123 , F24F5/0003 , F24F2140/20 , F24H4/02 , F24H9/2007 , F25B13/00 , F25B29/003 , F25B40/00 , F25B2313/003 , F25B2313/004 , F25B2339/047 , F25B2600/00 , F25B2600/021 , F25B2600/0252 , Y02B30/12 , Y02B30/741
Abstract: The hot and cold water air conditioning system includes a water temperature sensor configured to detect a temperature of water flowing out of the heat pump heat source apparatus by an operation of the water circulation pump, and a controller configured to perform, in a heating operation, on/off normal control that turns on a compressor when the water temperature detected by the water temperature sensor becomes lower than a target water temperature and turns off the compressor when the water temperature becomes higher than a first temperature value higher than the target water temperature, and to switch from the on/off normal control, upon repeating the on/off operation of the compressor at a minimum frequency necessary for an operation of the compressor in the on/off normal control, to on/off restriction control that turns on the compressor when the water temperature becomes lower than a second temperature value lower than the target water temperature and turns off the compressor when the water temperature becomes equal to or higher than a third temperature value higher than the target water temperature.
Abstract translation: 冷热水空调系统包括：水温传感器，被配置为通过水循环泵的操作来检测从热泵热源装置流出的水的温度;以及控制器，被配置为在加热操作中， 开启/关闭正常控制，当水温传感器检测到的水温低于目标水温时，打开压缩机，当水温高于高于目标水温度的第一温度值时关闭压缩机， 并且从开/关正常控制切换到在开/关正常控制中以压缩机的操作所需的最小频率重复压缩机的开/关操作时，打开/关闭限制控制 压缩机，当水温低于低于目标水温的第二温度值时，压缩机关闭 水温度等于或高于高于目标水温度的第三温度值。
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公开(公告)号：US20160161165A1
公开(公告)日：2016-06-09
申请号：US14879282
申请日：2015-10-09
Applicant: Mitsubishi Electric Corporation
Inventor： Takahiro USHIJIMA
CPC classification number: F25B49/022 , F24F1/08 , F24F11/30 , F24F11/62 , F24F2140/50 , F24F2140/60 , F25B13/00 , F25B30/02 , F25B31/00 , F25B47/025 , F25B2313/0253 , F25B2600/01 , F25B2600/0253 , F25D21/006 , Y02B30/741
Abstract: A low-cost and highly-efficient air-conditioning system including an AHU using refrigerant of a heat pump cycle as a heat source, and capable of reducing an on/off cycle operation of compressors at a time of a low load, the system including: a plurality of outdoor units; an air handling unit; a plurality of independent heat pump cycles formed by connecting the plurality of outdoor units and the air handling unit by refrigerant pipes, each of the plurality of independent heat pump cycles including a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger; and a number control unit controlling, to satisfy a capacity demand corresponding to an air-conditioning load, based on a particular frequency range associated with the compressor, in which a certain compressor efficiency or more is obtained, a number of the compressors in operation and operating frequencies of the respective compressors in operation.
Abstract translation: 一种低成本且高效率的空调系统，其包括使用热泵循环的制冷剂作为热源的AHU，并且能够在低负载时减少压缩机的开/关循环操作，该系统包括 多个室外机组; 空气处理单元; 多个独立的热泵循环，其通过制冷剂管连接多个室外单元和空气处理单元而形成，所述多个独立的热泵循环中的每一个包括压缩机，室内热交换器，膨胀阀和室外热 交换器 以及数字控制单元，其基于与获得了某种压缩机效率或更高的压缩机相关联的特定频率范围来控制满足与空调负载相对应的容量需求的压缩机的数量;以及 各压缩机运行中的工作频率。
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公开(公告)号：US20190072284A1
公开(公告)日：2019-03-07
申请号：US16084423
申请日：2016-05-26
Applicant: Mitsubishi Electric Corporation
Inventor： Takahiro USHIJIMA
CPC classification number: F24D19/1054 , F24D17/02 , F24D19/1087 , F24D2220/046 , F25B13/00 , F25B41/04 , F25B49/02 , F25B49/022 , F25B2313/003 , F25B2313/009 , F25B2313/021 , F25B2313/0231 , F25B2313/0314 , F25B2313/0315 , F25B2341/0662 , F25B2500/19 , F25B2600/021 , F25B2600/0253 , F25B2600/2507 , F25B2600/2513 , F25B2600/2519 , F25B2700/1931 , F25B2700/2106 , F25B2700/2115 , F25B2700/21152 , F25B2700/21162 , Y02B30/741
Abstract: A heat-pump air-conditioning hot-water supply device includes a first refrigerant passage connecting a compressor and a decompressor, a second refrigerant passage branching from between the compressor and a first solenoid valve and connecting a second solenoid valve, a hot-water supply heat exchanger, and the decompressor, a pressure sensor configured to measure discharge pressure of the compressor, and a control device configured to adjust an operational frequency of the compressor and adjust an opening degree of a valve of the decompressor. The control device is configured to calculate a condensing temperature from the discharge pressure, and perform operation in one of an air conditioning prioritized mode in which a preset operational frequency of the compressor is changed, and an energy saving prioritized mode in which the opening degree of the valve of the decompressor is changed, when the condensing temperature is not lower than a set condensing temperature.
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