Vehicle air conditioning unit air duct system

Abstract

The invention discloses an air-conditioner unit air duct system for a vehicle. The air-conditioner unit air duct system comprises a main air supply duct, a first air return duct and a second air return duct. The first air return duct and the second air return duct are arranged on the two sides of the main air supply duct. The main air supply duct is communicated with a compartment. Air-conditioner unit air return inlets communicated with an air-conditioner unit are formed in the first air return duct and the second air return duct. An air-conditioner unit air supply inlet communicated with the air-conditioner unit is formed in the main air supply duct. The air-conditioner unit air duct system further comprises a plurality of air return branch pipes communicated with the first air return duct and the second air return duct. One end of each air return branch pipe is communicated with the first air return duct or the second air return duct, and the other end of each air return branch pipe is communicated with the compartment. It can be seen from the technical scheme that the air return branch pipes are arranged on the first air return duct and the second air return duct and used for dispersing air entering the first air return duct and the second air return duct, return air dispersion is achieved, the resistance of return air inside the first air return duct and the second air return duct is reduced, a pressure head is reduced, the energy consumption of the air-conditioner unit is reduced, and the aim of reducing energy waste is achieved.

Description

Technical field [0001] The present invention relates to the field of transportation technology, in particular to an air duct system of an air conditioning unit for a vehicle. Background technique [0002] Intercity trains generally refer to small and medium-sized short-distance passenger trains that run between two important cities that are not far apart and tend to be public transportation. They do not stop or stop at a few stations. Only hard and soft seats are configured. Sleeper carriages can meet the requirements of the rapid development of my country's regional economy and the rise of urban agglomerations, and have the characteristics of large passenger capacity and rapid start and stop. [0003] In the prior art intercity vehicles, a main air supply duct is set in the middle of the roof, a main return air duct is set on both sides of the main air supply duct, and a return air vent is provided at the end of the vehicle, and the air return vent is connected to the main return a...

AI Technical Summary

Problems solved by technology

[0003] The intercity vehicles in the prior art adopt the main air supply channel in the middle of the roof, the main air return channel on both sides of the main air supply channel, and the return air outlet at the end of the vehicle, and the return air outlet communicates with the main return air channel , all the air in the car enters the main return air duct through the return air outlets at both ends of the car, and the return air resistance is large, which leads to a large pressure head of the fan in the car, increases the energy consumption of the air conditioning unit, and causes a waste of energy

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