The invention discloses an online diagnosis method for filth blockage of an air filter of a railway vehicle air-conditioning system. The method comprises the steps of A after a ventilator in the air-conditioning system is started, if the following conditions are simultaneously met, entering a step B: (1) the ventilator is in a constant-speed running state and an air return valve is in a full-openstate; and (2) the running speed of a vehicle is 0 to 100 km/h; B comparing the pressure difference between the two sides of the air filter, if the pressure difference is larger than or equal to deltaP or the preset value of a pressure difference controller and lasts for T1, recording early warning once, and otherwise executing the step A again; and C if the number of early warning times continuously recorded within a certain time exceeds N, sending out an air filter filth blockage early warning signal. The state of the air filter in the air conditioner can be monitored when the vehicle runs,the early warning information is sent out when the filth blockage of a filter screen reaches the preset state, the filter screen is cleaned or replaced in time, normal running of the air conditioneris effectively guaranteed, and the maintenance cost of the air filter is reduced.
本发明公开了一种轨道车辆空调系统空气过滤器脏堵在线诊断的方法,包括以下步骤:步骤A、在空调系统中的通风机启动后,如果同时满足以下条件则进入步骤B:(1)、通风机处于定速运行状态并且回风阀处于全开状态;(2)、车辆运行速度在0~100km/h;步骤B、比较空气过滤器两侧压力差,如果压力差大于等于△P或者压差控制器预设的值并且持续时间T1,则记录预警1次,否则返回步骤A;步骤C、如果在一定时间内连续记录的预警次数超过N次,则发出空气过滤器脏堵预警信号。本发明可实现车辆运行时对空调内空气过滤器进行状态监控,当滤网脏堵到预设状态时发出预警信息,及时对滤网进行清洁或更换,有效保证空调正常运行,降低空气过滤器维护成本。
Online diagnosis method for filth blockage of air filter of railway vehicle air-conditioning system
一种轨道车辆空调系统空气过滤器脏堵在线诊断的方法
2021-03-02
Patent
Elektronische Ressource
Chinesisch
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