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公开(公告)号：EP3404344A1
公开(公告)日：2018-11-21
申请号：EP17738440.1
申请日：2017-01-11
发明人： OHURA, Ryuuta , MINAMI, Junya
CPC分类号： F25B47/02 , F24F11/89 , F25B31/004 , F25B47/025 , F25B49/02 , F25B2313/0253 , F25B2347/021
摘要： Provided is a refrigeration apparatus in which a decrease in a temperature of an indoor heat exchanger can be suppressed as much as possible while depletion of refrigerator oil in a compressor is also suppressed. An air-conditioning apparatus (100) configured from a parallel connection of a plurality of outdoor units (10, 20) to an indoor unit (61, 65), wherein when a predetermined defrosting condition has been fulfilled, a control unit (7) selectively executes a reverse-cycle defrost mode when a predetermined outflow condition pertaining to an outflow integrated quantity of refrigerator oil has also been fulfilled, and selectively executes an alternating defrost mode, in which the outdoor unit (10, 20) that is to be defrosted is changed in sequence, when the predetermined outflow condition has not been fulfilled.
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公开(公告)号：EP3396275A1
公开(公告)日：2018-10-31
申请号：EP16878234.0
申请日：2016-11-21
发明人： OHURA, Ryuuta , MINAMI, Junya
摘要： In a case where the total volume of plural indoor heat exchangers (52a, 52b) is smaller than the volume of an outdoor heat exchanger (24), a control component (8) performs a heating refrigerant charging operation until a heating refrigerant charging completion condition is met, and thereafter performs a cooling refrigerant charging operation until a refrigerant charging completion condition where a refrigerant circuit (10) is charged with a prescribed quantity of refrigerant is met.
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公开(公告)号：EP3396275B1
公开(公告)日：2020-03-18
申请号：EP16878234.0
申请日：2016-11-21
发明人： OHURA, Ryuuta , MINAMI, Junya
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公开(公告)号：EP3252395A1
公开(公告)日：2017-12-06
申请号：EP15879835.5
申请日：2015-12-17
发明人： OHURA, Ryuuta , OKA, Yuusuke , MINAMI, Junya
CPC分类号： F24F11/89 , F25B13/00 , F25B43/02 , F25B49/02 , F25B2313/0314 , F25B2313/0315 , F25B2400/19 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152
摘要： In an air conditioning device (10) to which an outdoor unit (20) and indoor units (40) are connected, when a flow rate of a gaseous refrigerant in a gas main pipe (72a) is lower than a lower limit flow rate in main pipe, an amount of refrigerating machine oil accumulated in the gas main pipe (72a) is calculated. When gas branch pipes (72b) include a gas branch pipe (72b) having a flow rate lower than a lower limit flow rate in branch pipe even though the flow rate of the gaseous refrigerant in the gas main pipe (72a) is higher than the lower limit flow rate in main pipe, an amount of the machine oil accumulated in the gas branch pipe (72b) is calculated. When the amounts are integrated and the integrated value exceeds a set amount, oil collecting operation is performed.
摘要翻译： 在连接有室外机组（20）和室内机组（40）的空调装置（10）中，在气体主管（72a）内的气体制冷剂的流量低于下限流量 计算积聚在气体主管72a中的冷冻机油的量。 即使气体主管72a内的气体制冷剂的流量大于气体主管72a内的气体制冷剂的流量，在气体分支管72b中也包括流量比分支管内的下限流量少的气体分支管72b。 计算主管道中的下限流量，积聚在气体分支管道72b中的机油量。 当量被积分并且积分值超过设定量时，执行集油操作。
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公开(公告)号：EP3998436A1
公开(公告)日：2022-05-18
申请号：EP20837122.9
申请日：2020-07-02
发明人： OHURA, Ryuuta , KOTANI, Takuya
摘要： A circulation pump for circulating cooling water for use in heat exchange has been procured locally in installing a refrigeration cycle apparatus including a heat exchanger to be cooled with water. Consequently, the refrigeration cycle apparatus is incapable of directly controlling the circulation pump. A water regulator (10) includes a water regulation valve (11), a first temperature sensor (12), a second temperature sensor (13), and a controller (40). The water regulation valve (11) regulates a quantity of water flowing through water pipes (5). The first temperature sensor (12) measures a temperature of one of the water pipes (5) which is connected to an inlet of a heat exchanger (23). The second temperature sensor (13) measures a temperature of one of the water pipes (5) which is connected to an outlet of the heat exchanger (23). The controller (40) controls an opening degree of the water regulation valve (11), based on a difference between the temperature measured by the first temperature sensor (12) and the temperature measured by the second temperature sensor (13).
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公开(公告)号：EP3936789A1
公开(公告)日：2022-01-12
申请号：EP20766726.2
申请日：2020-03-04
发明人： OHURA, Ryuuta , KOTANI, Takuya
IPC分类号： F25B13/00 , F25B41/04 , F25B49/02 , F25B1/00 , F24F11/36 , F24F1/32 , G06F30/12 , G06F30/10 , G06F30/18
摘要： A design support system (300) includes an information acquisition unit (312) and a useful information presentation unit (318). The information acquisition unit (312) acquires information on arrangement of a relay unit serving as a refrigerant shut-off unit, information on utilization-side units in a first utilization-side unit group, and information on, for example, a length of a first connection pipe group. The useful information presentation unit (318) presents useful information based on at least the information acquired by the information acquisition unit (312). For example, the useful information presentation unit (318) makes a determination as to appropriateness of the acquired information, in view of allowable leakage of a refrigerant in a space where a corresponding one or more utilization-side units in the first utilization-side unit group is installed, and presents a result of the determination as the useful information.
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公开(公告)号：EP3252396B1
公开(公告)日：2020-03-25
申请号：EP15879836.3
申请日：2015-12-17
发明人： OHURA, Ryuuta , OKA, Yuusuke , MINAMI, Junya
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公开(公告)号：EP3936788A1
公开(公告)日：2022-01-12
申请号：EP20765508.5
申请日：2020-03-04
发明人： OHURA, Ryuuta , KOTANI, Takuya
摘要： An air conditioning apparatus includes a plurality of utilization-side units (3a, 3b, 3c, 3d) each including a first refrigerant circuit, a heat source-side unit (2) including a second refrigerant circuit, a connection pipe group (5, 6), and a relay unit (4A, 4B). The relay unit (4A, 4B) is disposed between the first refrigerant circuit and the second refrigerant circuit, and is configured to block a flammable refrigerant flowing through the connection pipe group. The utilization-side units include a first utilization-side unit group (81) that is a group of two or more utilization-side units. The relay unit (4A) blocks a flow of the refrigerant between the first refrigerant circuit in the first utilization-side unit group (81) and the second refrigerant circuit. The connection pipe group includes a first connection pipe group (5ab, 5a, 5b, 6ab, 6a, 6b) connecting the first refrigerant circuit in the first utilization-side unit group and the first refrigerant shut-off unit. The first connection pipe group has one of or both a length and an internal volume fixed based on information on capabilities of the two utilization-side units in the first utilization-side unit group.
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公开(公告)号：EP3396276A1
公开(公告)日：2018-10-31
申请号：EP16878705.9
申请日：2016-12-20
发明人： OHURA, Ryuuta , MINAMI, Junya
摘要： When charging a refrigerant circuit (10) with refrigerant, a control component (8) starts a heating refrigerant charging operation that is performed by switching the refrigerant circuit (10) to a heating cycle state and performs the heating refrigerant charging operation until a predetermined heating refrigerant charging completion condition is met. Thereafter, the control component (8) switches to a cooling refrigerant charging operation that is performed by switching the refrigerant circuit (10) to a cooling cycle state and performs the cooling refrigerant charging operation until a refrigerant charging completion condition where the refrigerant circuit (10) is charged with a prescribed quantity of the refrigerant is met.
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公开(公告)号：EP3153796A8
公开(公告)日：2017-06-07
申请号：EP15800124.8
申请日：2015-05-20
发明人： SUSAKI, Mari , OKA, Masahiro , OHURA, Ryuuta
CPC分类号： F25B13/00 , F24F11/89 , F25B29/00 , F25B40/02 , F25B49/02 , F25B2313/0231 , F25B2313/0233 , F25B2313/0253 , F25B2313/0315
摘要： In a first operation mode, a comparison is made between a first liquid pipe temperature, which is a temperature of a refrigerant on a side of a liquid pipe heat exchanger (45) that is near usage-side heat exchangers (52a, 52b, 52c, 52d), and a second liquid pipe temperature, which is a temperature of the refrigerant on a side of the liquid pipe heat exchanger (45) that is near a plurality of heat-source-side heat exchangers (24, 25), the liquid pipe heat exchanger performing heat exchange with the refrigerant flowing through liquid sides of the heat-source-side heat exchangers (24, 25). When an evaporation-switch liquid pipe temperature condition is satisfied, the heat-source-side heat exchanger (24) functioning as a radiator of the refrigerant is switched to an evaporator of the refrigerant, and the first operation mode is switched to a second operation mode in which the plurality of heat-source-side heat exchangers (24, 25) are caused to function as evaporators of the refrigerant.
摘要翻译： 在第一运转模式中，比较作为液体管热交换器（45）的利用侧热交换器（52a，52b，52c）附近的制冷剂温度即第一液体配管温度 ，第2液管温度是多个热源侧热交换器（24,25）附近的液管热交换器（45）侧的制冷剂的温度， 液管热交换器与在热源侧热交换器（24,25）的液体侧流动的制冷剂进行热交换。 当满足蒸发开关液体管道温度条件时，用作制冷剂的散热器的热源侧热交换器（24）切换到制冷剂的蒸发器，并且第一操作模式切换到第二操作 使多个热源侧热交换器（24,25）作为制冷剂的蒸发器发挥功能。
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