The invention discloses a subway air conditioner low-temperature refrigeration mode operation control method, which belongs to the technical field of rail vehicle air conditioner control, and comprises the following steps of: A, detecting an external temperature in real time, and executing a step B if the external temperature is detected to be lower than 10 DEG C and the air conditioner is in therefrigeration mode, otherwise, controlling the air conditioner unit to operate according to a normal control mode; and step B, shutting down one of two constant-speed condensate fans or making a double-speed condensate fan operate at a low speed, and shutting down one of two constant-frequency compressors or making an inverter compressor operate at a low frequency. By the adoption of the method, on the basis that components and auxiliary equipment are not added, on-off control and allocation are conducted on operation of the compressor and the condensate fan in time according to changes of system pressure; safe and reliable operation of the system is guaranteed, a refrigerating system and components are not damaged, and the comfortable refrigerating requirement can be met.
本发明公开了一种地铁空调低温下制冷模式的运行控制方法,属于轨道车辆空调控制技术领域,包括以下步骤:步骤A、实时检测外部温度,如果检测到外部温度低于10℃并且处于制冷模式时执行步骤B,否则按照正常的控制模式控制空调机组运行;步骤B、关闭两个定速冷凝风机中的一个定速冷凝风机或者双速冷凝风机运行在低速、关闭两个定频压缩机中的一个定频压缩机或者变频压缩机在低频下运行。采用本发明的方法在不增加部件和辅助设备的基础上,及时根据系统压力的变化,对压缩机和冷凝风机的运行进行开关性的控制调配;既保证了系统的安全可靠运行,不损害制冷系统和部件,又能满足舒适性的制冷需求。
Subway air conditioner low-temperature refrigeration mode operation control method
地铁空调低温下制冷模式的运行控制方法
22.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES |
Subway train air conditioner temperature adjusting system and method
Europäisches Patentamt | 2020
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