The structure of the air duct for the driver's cab of the rail transit vehicle

Abstract

The invention relates to an induced draft channel structure of a rail traffic vehicle cab. The induced draft channel structure comprises a main air duct body, wherein an air inlet is formed in one end of the main air duct body, an air outlet is formed in the other end of the main air duct body, the air inlet is communicated with an air source treated by an air conditioning unit in a passenger carriage air duct, and the air outlet is connected with a cab ventilation unit through a pipeline; and the induced draft channel structure is characterized in that a guide plate is arranged in the main air duct, the guide plate allows a guide passage to be formed between the air inlet and the air outlet, the end of the guide passage, adjacent to the air outlet, is provided with a resistance plate perpendicular to the flowing direction of the wind, and one side of the resistance plate is provided with a static pressure cavity. The induced draft channel structure can effectively suppress the action of the dynamic pressure of the passenger carriage air conditioning unit and control the air volume sent into a cab.

Description

technical field [0001] The invention relates to a structure of an air-introducing duct for a driver's cab of a rail transit vehicle. Background technique [0002] At present, the driver's cab of subway vehicles mostly adopts the driver's cab ventilation unit, and an air induction duct is set between the ventilation unit and the passenger compartment air duct close to the driver's cab. When the ventilation unit is in operation, the air treated by the air conditioning unit in the passenger compartment air duct close to the driver's cab is introduced into the driver's cab through the induced air duct. The subway project has requirements for the maximum air supply volume of the driver's cab. If no ventilation unit is installed, only the air induction duct and air supply grille are installed, and the air is sent into the driver's cab through the air pressure in the air duct of the passenger compartment close to the driver's cab. The air volume usually does not meet the requireme...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages brought about by the above structure are: first, when the demand for air volume in the driver's cab is small, due to the pressure of the air conditioner in the passenger room, more wind will still be forced into the driver's cab, and the air volume in the driver's cab cannot be effectively adjusted

[0005] Second, the airflow is sent into the driver's cab with a relatively large dynamic pressure, and there is a loud airflow sound

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