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公开(公告)号：US20210063037A1
公开(公告)日：2021-03-04
申请号：US16956774
申请日：2018-12-07
发明人： Yusuke HAZUI , Koki TATEISHI , Satoshi NIKAIDO , Yutaka TAKENAKA
摘要： A control device for a refrigerator system for cooling a load by using a plurality of refrigerators, said control device comprising a unit to control the number of operating units that changes the number of operating refrigerators according to the load rate, and a cold water temperature acquisition unit that acquires, via a temperature sensor, the temperature of cold water affected by the refrigerators. After a prescribed standby time from when the number of operating refrigerators was changed has elapsed, the unit to control the number of operating units changes the number of operating units and reduces the prescribed standby time when at least one of the cold-water temperature and the rate of change in the cold-water temperature satisfies a prescribed condition.
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公开(公告)号：US20200018523A1
公开(公告)日：2020-01-16
申请号：US16497131
申请日：2018-03-20
发明人： Yutaka TAKENAKA , Satoshi NIKAIDO , Koki TATEISHI , Yusuke HAZUI
摘要： A refrigerating system of the present invention includes a plurality of parallel type refrigerators each of which has a plurality of compressors, and a host control device having a compressor start/stop permission output unit which is configured to output a compressor activation permission or a compressor stop permission to one of the plurality of parallel type refrigerators which is activated according to a predetermined permission condition. Each of the parallel-type refrigerators has a compressor activation control unit which is configured to a stopped compressor included in a certain refrigerator when a load factor of the certain refrigerator is equal to or greater than a first specified value and the compressor activation permission is received, and a compressor stop control unit which is configured to stop an activated compressor included in a certain refrigerator when the load factor of the certain refrigerator is less than a second specified value and the compressor stop permission is received.
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公开(公告)号：US20240125515A1
公开(公告)日：2024-04-18
申请号：US18276960
申请日：2021-11-25
IPC分类号： F24H15/212 , F24H15/238
CPC分类号： F24H15/212 , F24H15/238
摘要： The purpose of the present invention is to provide a control device, a heat source system, a control method, and a control program with which a heat medium at a required temperature can be more effectively sent out. This control device, which is applied to a heat source system 1 comprising a plurality of heat source machines (2a), (2b) connected in series, comprises a setting unit which sets the outlet setting temperatures of cool water in the respective heat source machines (2a), (2b) on the basis of: a measured value of a cool water flow rate, measured values of inlet temperatures of the cool water in the respective heat source machines (2a), (2b); and the required outlet temperature of the cool water in the heat source system (1).
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公开(公告)号：US20210310687A1
公开(公告)日：2021-10-07
申请号：US17269061
申请日：2019-06-28
摘要： The purpose of the invention is to provide a control device that can calculate the lower limit of cooling water inlet temperature according to the operation status of a chiller. A control device comprises: a lower limit calculation unit that calculates the lower limit of cooling water outlet temperature, where a prescribed required temperature difference is added to the cooling water outlet temperature of a chiller, and an inlet-outlet required temperature difference, which is the difference between the cooling water outlet temperature and the cooling water inlet temperature in the chiller and which is generated according to the operation status of the chiller, and that calculates a cooling water inlet temperature lower limit calculated value for the chiller by subtracting the inlet-outlet required temperature difference from the cooling water outlet temperature lower limit value; and a lower limit value determination unit that fixes the cooling water inlet temperature lower limit calculated value as the cooling water inlet temperature lower limit value.
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公开(公告)号：US20200041144A1
公开(公告)日：2020-02-06
申请号：US16339106
申请日：2017-09-20
申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. , TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED
发明人： Satoshi NIKAIDO , Koki TATEISHI , Yusuke HAZUI , Yutaka TAKENAKA , Hirotaka HANASAKI , Satoru TANAKA
摘要： A superordinate controlling device for a heat source system (1) including a plurality of heat sources, the superordinate controlling device being applied to the heat source system (1) and controlling heat-pump type chillers (2a) and (2b) and absorption-type chillers (2c) and (2d) in such a manner that a heat transfer medium leaving temperature that is the temperature of a heat transfer medium supplied to an external load (6) is equal to a setting temperature. The heat-pump type chillers (2a) and (2b) each have a higher Coefficient of Performance (COP) than that of each of the absorption-type chillers (2c) and (2d). The superordinate controlling device includes a heat transfer medium leaving temperature changing means for carrying out heat transfer medium leaving temperature control, by changing the heat transfer medium leaving temperatures of the heat-pump type chillers (2a) and (2b), when a post-change prediction value of each of the absorption-type chiller (2c) and (2d) predicted based on a supposition that the heat transfer medium leaving temperatures of the heat-pump type chillers (2a) and (2b) are changed exceeds a second underload stop threshold value at which the corresponding one of the absorption-type chiller (2c) and (2d) would have an underload stop.
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