Rail transit air conditioner air supply assembly and refrigerating/heating method

Abstract

The invention discloses a rail transit air conditioner air supply assembly and a refrigerating / heating method, and belongs to the field of rail transit. The assembly comprises an air inlet, a fan, anair conditioner air supply pipeline, an air outlet, an air volume adjusting valve, an air pressure sensor and an air pressure buffer. Firstly, passenger feature information is acquired according to real-time image information in each compartment of a traffic vehicle; and then for different vehicle types and passenger distribution models, obtaining the air volume required below each air volume adjusting valve through CAE simulation, and calculating the rotating speed of the fan. And calculating the ventilation area of each air volume adjusting valve according to the heat required by the refrigeration / heating of the temperature field under each air volume adjusting valve, and finding out the opening angle corresponding to each air volume adjusting valve. The fan determines the rotating speedaccording to the total air volume required by all the different air outlets; Meanwhile, the air pressure sensor monitors air pressure fluctuation in the air duct in real time, buffering is conductedthrough the air pressure buffer, and large air pressure fluctuation is avoided. The air volume of each air outlet is different, the comfort level of passengers is improved, and unnecessary power consumption is avoided.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a rail transit air-conditioning air supply assembly and a cooling / heating method. Background technique [0002] The air-conditioning system is an indispensable part of the public rail transport. During the driving process, the compartment remains relatively airtight for a long time. Due to the heat emitted by the passengers, the exchange of gas and the combined effects of various factors, the air quality in the compartment is poor. In order to change the indoor temperature and make passengers feel comfortable and breathe normally, it is necessary to install an air conditioning system for adjustment. [0003] The current air-conditioning system is mainly composed of air-conditioning units, air supply channels and return air channels. The temperature is relatively constant. The principle is to start and stop the compressor according to the temperature change in the car, and install te...

AI Technical Summary

Problems solved by technology

Since the starting current of the compressor is several times of the working current when starting, and the huge moment of inertia of the rotor in the process of changing from static to rated speed must be overcome continuously, especially when starting with a load, the starting torque is many times higher than the operating torque. The result is not only extra electricity consumption, but also increased wear and tear on the moving parts of the compressor

[0004] On the other hand, this control method cannot locally adjust the temperature to meet different needs according to factors such as the number of people in the compartment, passenger distribution, passenger gender and age, and does not have satisfactory comfort.

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