Noise reduction control method, air conditioning unit, railway vehicle and noise reduction device

Abstract

The invention provides a noise reduction control method, an air conditioning unit comprises a noise reduction device and a control system arranged in the noise reduction device, the noise reduction device comprises one or more sound collection devices capable of collecting noise data, and the control system is internally provided with a standard value of operation noise. The control system compares the real-time noise data acquired by the acquisition device with the standard value of the noise to obtain the over-limit noise, and eliminates the over-limit noise according to a preset program. The invention further provides the air conditioning unit using the noise reduction control method, a railway vehicle and a noise reduction device . According to the noise reduction control method, the air conditioning unit, the railway vehicle and the noise reduction device, the running noise of an air conditioning system can be effectively reduced, and intelligent noise reduction is conducted on the railway vehicle.

Description

technical field [0001] The invention relates to the technical field of air-conditioning products, in particular to a noise reduction control method, an air-conditioning unit, a rail vehicle and a noise reduction device. Background technique [0002] Inverter air conditioners adjust the output cooling capacity by automatically adjusting the operating frequency of the compressor and the speed of the fan according to the load changes such as the indoor set temperature target and the passenger capacity, so as to keep the temperature in the passenger room within the set temperature range. After the indoor temperature reaches the expected value, the air conditioner compressor maintains a certain speed, and the fan adjusts the speed to adjust the air volume and wind speed (that is, the speed of the rotor parts such as the fan and compressor changes), so the noise value and the sound spectrum emitted by the air conditioner itself are Changes; affected by the complex environment of t...

AI Technical Summary

Problems solved by technology

[0003] The current active noise reduction measures for rail vehicle systems are generally integrated inside the vehicle air duct or inside the compartment. The acoustic sensors and noise generators of the active noise reduction system are limited by the installation location and quantity, so it is impossible to monitor the inverter air conditioner and the interior of the unit in real time. The noise state of each rotor component cannot simultaneously reduce the impact of the air conditioner’s own operating noise and environmental noise on the interior of the car, which affects the ride comfort of the vehicle

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