Low-noise air conditioner air duct of railway passenger car

Abstract

The invention discloses a low-noise air conditioner air duct of a railway passenger car. The low-noise air conditioner air duct comprises an air conditioner return air inlet (3), an air conditioner air supply outlet (2), an air supply channel and an air return channel (11), the air conditioner air supply outlet is connected with the air supply channel, a silencer (7) is arranged in the air supply channel below the air conditioner air supply outlet, and the silencer comprises a left arc plate (701) and a right arc plate (702); the adjacent sides of the left arc plate and the right arc plate are connected into a whole, and the opposite sides of the left arc plate and the right arc plate extend towards one end of the air supply channel in an arc shape. The two ends of the left arc plate and the two ends of the right arc plate are sealed through reinforcing rib plates (704) correspondingly, so that a sound absorption cavity is defined by the left arc plate, the right arc plate, the air supply channel bottom plate and the reinforcing rib plates at the two ends. Sound absorption micropores (03) are evenly distributed in the left arc plate and the right arc plate respectively, and the sound absorption cavity is filled with sound absorption cotton used for absorbing noise of the air conditioning unit. The low-noise air conditioner air duct is convenient to process, and the riding comfort of passengers in the passenger compartment is greatly improved.

Description

Technical field [0001] The present invention relates to a rail passenger vehicle ventilation device, in particular a rail passenger car low noise air conditioning airway. Background technique [0002] Air conditioning ventilation system as an indispensable part of the Rail Transport Vehicle Department, and its performance is inadvertently affects the comfort of passengers. Reduce air conditioning ventilation system noise, enhance air-conditioned air-conditioned air-blowing uniformity, has always been the focus of HVAC. [0003] At present, due to limited internal space interior, the distance between the air-conditioning airway and the passenger's wind-top plate is very close, the noise of the air conditioner is easy to pass into the guest room. For problems in the air-conditioned flap, there is a problem, and the general use of the universal use of sound absorbing cotton inside the air conditioner. However, the sound absorbing cotton inside the air conditioner is better than that...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a low-noise air-conditioning air duct for rail passenger cars that is easy to process and can effectively absorb the low-frequency noise of the air-conditioning unit in view of the problem that the noise of the existing top-mounted air-conditioning unit is easily transmitted into the passenger compartment.

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