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1. 发明公开

EP4400786A1 A REFRIGERATION SYSTEM AND A METHOD OF OPERATING A REFRIGERATION SYSTEM 审中-公开
公开(公告)号：EP4400786A1
公开(公告)日：2024-07-17
申请号：EP23158026.7
申请日：2023-02-22
申请人： Thermo King LLC
发明人： DONNELLAN, Wayne , GREENE, Michael , NAYAK HEBRI, Gurudath
IPC分类号： F25B49/02 , F25B40/00 , F25B5/04 , F25B6/04
CPC分类号： F25B49/02 , F25B40/00 , F25B2400/05420130101 , F25B5/04 , F25B6/04 , F25B2700/2117420130101 , F25B2700/2117520130101
摘要： There is described a refrigeration system 100, 500 comprising a controller 190. The controller 190 is configured to: determine 220 one or more parameters of the refrigeration system 100, 500; determine 230 whether a first mode selection condition has been met and/or whether a second mode selection condition has been met based on the determined one or more parameters; select 240 a first mode 242 upon 334, 332' the first mode selection condition having been determined to have been met and/or upon 332, 334' the second mode selection condition having been determined to have not been met; select 240 a second mode 244 upon 332, 334' the second mode selection condition having been determined to have been met and/or upon 334, 332' the first mode selection condition having been determined to have not been met; and operate 260 the refrigeration system 100, 500 in the selected mode. Operating 260 the refrigeration system 100, 500 in the first mode comprises controlling the expansion valve 106 to bring a superheat of the refrigerant in the suction line 18 upstream of the liquid-suction heat exchanger 110 towards a first target superheat value or towards or within a first target range of superheat values, wherein the superheat of the refrigerant in the suction line 18 upstream of the liquid-suction heat exchanger 110 is determined based on the sensed temperature and pressure of the refrigerant in the suction line 18 upstream of the liquid-suction heat exchanger 110. Operating 260 the refrigeration system 100, 500 in the second mode comprises controlling the expansion valve 106 to bring a superheat of the refrigerant in the suction line 18 downstream of the liquid-suction heat exchanger 110 towards a second target superheat value or towards or within a second target range of superheat values, wherein the superheat of the refrigerant in the suction line 18 downstream of the liquid-suction heat exchanger 110 is determined based on the sensed temperature and pressure of the refrigerant in the suction line 18 downstream of the liquid-suction heat exchanger 110. There is also described a method 200, 200A-E' of operating a refrigeration system 100, 500.

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