Rail train exhaust emission device

Abstract

The invention relates to a rail train exhaust emission device. A shell body is of a sandwich structure formed by a metal plate structure in an inner layer and a metal plate structure in an outer layer. Hoisting legs are arranged on the periphery of the shell body, two air returning ports are formed in the middle of a metal plate in the inner layer, an air returning port partition plate is arranged in the middle of each air returning port to divide the corresponding air returning port into a left air port and a right air port, and sum up, the four air ports are formed. Each air port is provided with two exhaust outlets in the edge of the shell body, and a protection grating is arranged at the port end of each exhaust outlet. A plurality of small holes are formed in the periphery of the metal plate in the inner layer to form a pore-plate-shaped sound attenuation structure, and sound absorption and heat preservation materials are adhered to a gap of the sandwich structure. An air door fixing plate is arranged on the metal plate structure in the outer layer of each exhaust outlet in a riveting mode and is connected with an exhaust door through a hinge, wherein the exhaust door can rotate around a shaft of the hinge to be opened or closed. The exhaust emission device mechanically rotating the air door is arranged on the top of a carriage of a rail train, the exhaust emission is automatically carried out according to the air pressure inside and outside the carriage to prevent the exterior air from flowing backwards, and comfort of taking the rail train is improved.

Description

technical field [0001] The invention relates to the technical field of design and manufacture of rail vehicle air conditioners, in particular to a waste (gas) exhaust (discharging) device for a rail train ventilation system. Background technique [0002] "rail train" that the present invention says mainly refers to the used vehicle of city subway train, light rail train and intercity train. With the development of urbanization worldwide, the construction of rail transit, including subway, light rail and intercity train, has become the development trend of public transportation in various countries. Rail trains not only need a good air-conditioning system, but also need a good ventilation environment to keep the rail cars comfortable. When there are more people on the rail train, the air in the rail car needs to be kept in a timely manner. At present, the exhaust devices of rail trains are generally divided into active exhaust (gas) exhaust (emission) devices (including ele...

AI Technical Summary

Problems solved by technology

However, when the rail train is running, sometimes negative pressure will be formed inside the car (positive pressure outside the car), and the air outside the car will be poured into the rail car, which will affect the comfort of the rail car (flow field and temperature field)

The existing active waste discharge device has a fan, so it can prevent the phenomenon of backflow of air outside the compartment, but the noise generated by it is larger than that of the passive waste discharge device, and the operating cost is high, and the equipment needs frequent maintenance

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