Emergency ventilation windows on the roof of high-speed EMUs

Abstract

The invention relates to a roof emergency ventilating window for a high-speed electric multiple units (EMU). The roof emergency ventilating window comprises a fixing seat, a draught fan, a movable cover plate, a support mechanism and at least one set of locking mechanisms. The fixing seat is fixed to a vehicle body, the draught fan is fixedly arranged on the fixing seat, and the movable cover plate covers the top of the fixing seat and the top of the draught fan. The movable cover plate is connected with the fixing seat in a sealed mode when in the close state, the two ends of the support mechanism are connected with the movable cover plate and the fixing seat respectively, and the movable cover plate is locked with the fixing seat through the locking mechanisms. The roof emergency ventilating window is simple in overall structure, integration of the vehicle window and the draught fan is achieved in the limited roof space, the roof space is utilized reasonably, operation is easy, when a vehicle power supply system breaks down, the ventilating window can be opened manually, ventilation of a guest room is guaranteed, good seal between the movable cover plate and the fixing seat is achieved through a double-seal-ring structure, and airtightness of the vehicle in the normal operation process is guaranteed.

Description

technical field [0001] The invention relates to a ventilation window, in particular to an emergency ventilation window on the roof of a high-speed EMU, and belongs to the technical field of high-speed rail vehicle manufacturing. Background technique [0002] At present, the speed of the high-speed EMU has reached more than 300 kilometers per hour. The passenger compartment of the high-speed EMU adopts an airtight fixed window structure to ensure the airtightness of the passenger compartment, thereby improving the comfort of the passenger compartment during high-speed operation. In order to ensure the freshness of the air in the passenger compartment, an air-conditioning unit and a fresh air ventilation device are installed in each carriage. After the fresh air is mixed with the indoor return air, it passes through the evaporator of the air-conditioning unit and exchanges heat with the refrigerant in the evaporator. The air is sent to the passenger room through the air duct. ...

AI Technical Summary

Problems solved by technology

[0003] However, when the power supply of the EMU fails or there is a power outage, the air-conditioning unit is powered off and forced ventilation cannot be performed. Due to the high airtight structure of the passenger compartment, the indoor ventilation is poor, which in turn leads to insufficient fresh air in the passenger compartment, which is likely to affect the health of passengers.

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