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公开(公告)号：EP3839375A1
公开(公告)日：2021-06-23
申请号：EP18930462.9
申请日：2018-08-17
摘要： A free cooling outdoor unit includes: a refrigerant circuit where a compressor, a first heat exchanger, an expansion device, and a refrigerant flow passage of a first water heat exchanger are connected by pipes so as to cause refrigerant to circulate therein; a brine circuit where a brine pump, a second heat exchanger, and a brine flow passage of a second water heat exchanger are connected by pipes so as to cause brine to circulate therein; a water circuit where a water pump, a water flow passage of the second water heat exchanger, and a water flow passage of the first water heat exchanger are connected by pipes so as to cause water to circulate therein; a fan configured to send air to the second heat exchanger; a flow control valve configured to control a circulation amount of the brine in the brine circuit; a water temperature detection sensor configured to detect a water temperature in the water circuit; an outside air temperature sensor configured to detect an outside air temperature; and a controller configured to control, in a case where the outside air temperature is equal to or lower than a freezing temperature of the brine, the circulation amount of the brine based on the water temperature such that a brine temperature is prevented from reaching a temperature equal to or lower than the freezing temperature of the brine.
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公开(公告)号：EP3839373A1
公开(公告)日：2021-06-23
申请号：EP18930228.4
申请日：2018-08-17
发明人： MUKAITANI, Naoya , HIKONE, Takahito , YAMANO, Yoshio , KADOWAKI, Kimitaka , ITO, Takuya , OKOSHI, Yasushi
摘要： A free cooling system includes a plurality of free cooling outdoor units each including a heat medium circuit, a controller, and a communication unit, the heat medium circuit being configured by connecting a heat medium pump, a first heat exchanger, and a heat source side of a second heat exchanger by pipes, a heat medium circulating in the heat medium circuit, the controller configured to control the heat medium pump, and the communication units performing communication with each other, wherein the plurality of free cooling outdoor units are coupled with each other by a load pipe that allows a load heat medium to flow to or flow out from a load side of each second heat exchanger.
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公开(公告)号：EP3309475B1
公开(公告)日：2020-05-06
申请号：EP15894923.0
申请日：2015-06-10
发明人： NAGATA, Yuki , ITO, Takuya , OKOSHI, Yasushi
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公开(公告)号：EP3267130B1
公开(公告)日：2019-10-09
申请号：EP15883950.6
申请日：2015-03-04
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公开(公告)号：EP3477221A1
公开(公告)日：2019-05-01
申请号：EP16906300.5
申请日：2016-06-23
发明人： YAMANO, Yoshio , OKOSHI, Yasushi , ITO, Takuya , HIKONE, Takahito
摘要： Provided is a heat medium cycle system capable of being continuously operated while a heat medium is being prevented from freezing in a heat medium heat exchanger by using a pressure difference of the heat medium obtained from a measurement value of an inlet pressure sensor provided at an inlet of the heat medium heat exchanger and a measurement value of an outlet pressure sensor provided at an outlet of the heat medium heat exchanger. The heat medium cycle system includes a refrigeration cycle circuit, a heat medium cycle circuit, an inlet temperature sensor, the inlet pressure sensor, the outlet pressure sensor, an evaporating temperature sensor, and a controller. Under a first condition where the heat medium is to freeze in the heat medium heat exchanger, the controller is configured to obtain a minimum on-state flow rate at which the heat medium is kept from freezing in the heat medium heat exchanger, on the basis of a temperature of the heat medium at a heat medium inlet measured by the inlet temperature sensor and an evaporating temperature of refrigerant detected by the evaporating temperature sensor, and control a pump in such a manner that the minimum on-state flow rate is maintained to make the pressure difference of the heat medium obtained from a measurement value of the inlet pressure sensor and a measurement value of the outlet pressure sensor into a minimum on-state pressure difference.
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公开(公告)号：EP3315875A1
公开(公告)日：2018-05-02
申请号：EP15896330.6
申请日：2015-06-24
发明人： HIKONE, Takahito , OKOSHI, Yasushi , ITO, Takuya
CPC分类号： F25B49/02 , F25B13/00 , F25B41/04 , F25B43/00 , F25B47/025 , F25B49/005 , F25B2313/02741 , F25B2313/029 , F25B2400/0411 , F25B2400/16 , F25B2500/27 , F25B2600/2501 , F25B2600/2513
摘要： A heat source apparatus including: a compressor; an air-cooled heat exchanger; a load-side heat exchanger configured to exchange heat between a heat medium which flows through a load, and refrigerant; and a main expansion valve which is connected between the air-cooled heat exchanger and the load-side heat exchanger, and has a function of being fully closed when stoppage of power supply from a power supply source is detected, includes a refrigerant flow control circuit connected in parallel to the main expansion valve. The refrigerant flow control circuit includes a first sub-expansion valve configured to regulate a flow rate of the refrigerant, a refrigerant tank configured to store the refrigerant, and a second sub-expansion valve configured to regulate the flow rate of the refrigerant, which are connected in series with one another.
摘要翻译： 一种热源装置，包括：压缩机; 一个空气冷却换热器; 负载侧热交换器，其构造成在流过负载的热介质与制冷剂之间交换热量; 以及连接在空冷式热交换器和负载侧热交换器之间，具有在检测到来自电源的供电停止时全闭的功能的主膨胀阀，该制冷剂流量控制回路 与主膨胀阀并联连接。 制冷剂流量控制回路具有：调节制冷剂的流量的第一副膨胀阀;构成为储存制冷剂的制冷剂罐;以及构成为调节制冷剂的流量的第二副膨胀阀， 彼此串联连接。
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公开(公告)号：EP3267130A1
公开(公告)日：2018-01-10
申请号：EP15883950.6
申请日：2015-03-04
CPC分类号： F25B1/00 , F25B13/00 , F25B41/04 , F25B45/00 , F25B47/02 , F25B47/025 , F25B49/02 , F25B2341/0661 , F25B2345/003 , F25B2400/0411 , F25B2500/28 , F25B2600/2501 , F25B2600/2513 , F25B2600/2519 , F25B2700/1931
摘要： Provided is a refrigeration cycle apparatus configured to suppress a liquid backflow operation to a compressor during a hot-gas reverse type defrosting operation. A refrigeration cycle apparatus (1) according to the present invention includes a refrigerant circuit (2) including a compressor (21), a flow switching valve (29), a heat source-side heat exchanger (22), a main-expansion valve (24), and a use-side heat exchanger (25) that are connected by refrigerant pipes, and is configured to perform the hot-gas reverse type defrosting operation. The refrigeration cycle apparatus (1) includes a pressure sensor (3) configured to measure pressure on a high-pressure side of the refrigerant circuit, and a controller (4) configured to control the compressor (21), the flow switching valve (29), and the main-expansion valve (24). The main-expansion valve (24) connected between the heat source-side heat exchanger (22) and the use-side heat exchanger (25) is connected in parallel to a series circuit including a sub-expansion valve (26) having a variable opening degree, a refrigerant tank (27) configured to accumulate surplus refrigerant, and a solenoid valve (28) that are connected in series. The controller (4) is configured to control the opening degree of the sub-expansion valve (26) and opening and closing of the solenoid valve (28), based on the pressure measured by the pressure sensor (3).
摘要翻译： 本发明提供一种冷冻循环装置，其构成为在热气逆转式除霜运转时抑制向压缩机的液体回流运转。 本发明的冷冻循环装置（1）包括：具有压缩机（21），流路切换阀（29），热源侧热交换器（22），主膨胀阀 （24）以及利用制冷剂配管连接的利用侧热交换器（25），构成为执行热气逆转式除霜运转。 本发明的制冷循环装置（1）具备测定制冷剂回路的高压侧的压力的压力传感器（3）和控制压缩机（21）的控制器（4），流量切换阀 ）和主膨胀阀（24）。 连接在热源侧热交换器22与利用侧热交换器25之间的主膨胀阀24并联连接于包括副膨胀阀26的串联回路， 开度，积存剩余制冷剂的制冷剂罐（27）和串联连接的电磁阀（28）。 控制器（4）基于由压力传感器（3）测量的压力来控制副膨胀阀（26）的开度和电磁阀（28）的开闭。
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