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Connecting with the improved process of the wall mounted air-conditioner manufacturing,the article analyzes the blade passing frequency noise and the vortex noise of the cross-flow fan.

结合挂壁式空调制造工艺改进实践,分析了贯流风机旋转噪声和涡流噪声产生原因,并通过噪声品质分析、参数优化设计等试验研究,提出了选择合理的技术参数、进行蒸发器风道、叶轮等工艺结构改进等降低噪声的技术措施,实现了较为理想的降噪效果。

Taking the FFC-23Adisk mill as a specimen model, the rotation noisegenerated from the interaction between fixed claws distributed on the outer and innercircle of the fixed claw plate and the corresponding moving claws has been separated in an experimental study by the modern analytic method of acoustic.

本文以FFC— 2 3A型爪式粉碎机为样机 ,利用现代声学测试分析手段对其工作时定齿盘内、外圈齿与相应动齿相掠过所产生的旋转噪声进行了试验分离研究 ,从而得出了爪式粉碎机旋转噪声的主要成分源自工作中外圈定齿与其相互作用的动齿所产生的噪声。

The tubular cross flow fan is the main component of rotation noise and worm flow noise.

矿用贯流风机噪声的主要成分是旋转噪声和涡流噪声。

Numerical prediction for the acoustic noise of helicopter rotor in forward flight

前飞状态下直升机旋翼旋转噪声预测

Separation of Rotation Noise in Disk Mill and the Modified Design for Reduction Noise;

爪式粉碎机旋转噪声的提取与降噪改进设计

STUDY ON SEPARATION AND ACQUISITION OF ROTATION NOISE IN DISK MILL

爪式粉碎机旋转噪声分离与提取的研究

Effect of Interaction between Centrifugal Impeller and Volute Tongue on the Performance and BPF Noise

叶片与蜗舌耦合对离心风机性能和旋转噪声影响的数值研究

Measurement of airborne noise emitted by rotating electrical machinery and the noise limits--Noise limits

GB10069.3-1988旋转电机噪声测定方法及限值噪声限值

Indentifying and suppression of low frequency noise from the rotary compressor

旋转压缩机低频噪声源识别及噪声抑制

Measurement of airborne noise emitted by rotating electrical machinery and the noise limits--Engineering method for the measurement of airborne noise

GB/T10069.1-1988旋转电机噪声测定方法及限值噪声工程测定方法

Measurement of airborne noise emitted by rotating electrical machinery and the noise limits--Survey method for the measurement of airborne noise

GB/T10069.2-1988旋转电机噪声测定方法及限值噪声简易测定方法

noise produced by the friction of the stylus of a record player moving over the rotating record.

电唱机唱针与旋转的唱片表面摩擦发生的噪声。

Research on Structure Radiant Noise of Rotary Machines and the Mechanism to Control It

旋转机械结构噪声及其控制机理的研究

The Study of the Structure Noise Encouraging by Rotatory Machinery;

旋转机械激励下柔性基础结构噪声研究

"Turning the squelch control CCW until it clicks enables the auto squelch, eliminating the need to manually adjust the squelch."

逆时针旋转静噪旋钮直到发出"嘀"的一声就启用了自动静噪,使你不必手动静噪。

On Improving HSI Noise Prediction for Helicopter Rotor in Forward Flight When Flowfield is Partially near Sonic Speed

旋翼前飞气动噪声高效数值算法研究

Identifying Research on Noise Sources of Rotary Vane Compressor

旋叶式汽车空调压缩机的噪声源识别

Investigation on the Blade-Vortex Interaction Aerodynamic Noise of Helicopter Rotors;

直升机旋翼桨—涡干扰气动噪声的研究

Identification and Analysis of Noise Source in Counter-rotating Axia-flow Fan

对旋轴流通风机噪声源的识别与分析

Research on Propeller Cavitation Characteristics and Low Noise Propeller Design;

螺旋桨空泡性能及低噪声螺旋桨设计研究

This paper focused on such problems as mixing models of sources of rotation machines (including vibratory and acoustical sources) and their waveform restoral.

重点讨论了旋转机械源（包括振动激励源与噪声源）混合模式及源波形恢复问题。