Control method and control device for beat vibration prevention of multi-noise source equipment

A control method and noise source technology, applied in noise suppression, mechanical equipment, lighting and heating equipment, etc., can solve the problems of complex devices, poor reliability, poor user experience, etc., and achieve a wide range of applications, easy promotion and use, and control The effect of simple method and device

Active Publication Date: 2019-11-15
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a control method and control device for multi-noise source equipment to prevent beating vibration. Solve

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  • Control method and control device for beat vibration prevention of multi-noise source equipment
  • Control method and control device for beat vibration prevention of multi-noise source equipment
  • Control method and control device for beat vibration prevention of multi-noise source equipment

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Embodiment Construction

[0062] In order to better understand the purpose, structure and function of the present invention, a control method and control device for anti-slap vibration of multi-noise source equipment according to the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] The beat vibration phenomenon refers to the phenomenon that when the excitation amplitude and frequency of two sound sources are close to each other, the overall external vibration amplitude of the two sound sources superimposed changes periodically at a low frequency. Because this phenomenon has an obvious beat attribute of "strong-weak-strong-weak", people can be sensitive to it, so it is called "beat vibration".

[0064] The anti-beat vibration control method and control device for multi-noise source equipment provided by the present invention are suitable for multi-noise source equipment with multiple compressors, blowers, fans or engines, such as blowers ...

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Abstract

The invention discloses a control method for beat vibration prevention of multi-noise source equipment, and the method is used for controlling a variable frequency air conditioner of multi-noise sources. The method comprises the steps of obtaining total noise value generated by the variable frequency air conditioner and a noise frequency spectrum curve corresponding to the total noise value; analyzing the noise frequency spectrum curve, and determining difference value between an average sound pressure level in a time domain conversion spectrum and peak value in a preset frequency range; determining whether beat vibration noise exists or not according to the difference value; and when the beat vibration noise exists, the beat vibration noise is eliminated by reducing the operating frequency of a compressor or a fan. The invention also discloses a control device for beat vibration prevention of the multi-noise source equipment. According to the control method, whether beat vibration noise exists in a unit or not is determined by difference of the average sound pressure level of the time domain Fourier conversion spectrum and the peak value of the middle frequency and the low frequency, and if the beat vibration noise exists, the beat vibration noise is eliminated by controlling the operating frequency of the compressor or the fan. The control method and the device are simple andreliable, and are easier to popularize and use.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method and a control device for anti-beat vibration of equipment with multiple noise sources. Background technique [0002] For inverter air conditioner outdoor units with multiple noise sources, such as single fan-compressor and double fan-compressor, beating noise is a common noise of the whole machine, and the excitation amplitude of this type of noise at the two sound sources When the frequency is close to the frequency, after the two are superimposed, the overall vibration amplitude changes periodically at a low frequency, because it has a rhythm attribute, which can be sensitively perceived by people, and will directly affect the user's perception of the sound quality of the air conditioner. There is a serious risk of after-sales complaints. [0003] Taking a unit with two fans and one compressor as an example, there are three noise sources in the outdoo...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/89F24F13/24F24F11/77F24F11/86
CPCF24F11/64F24F11/77F24F11/86F24F11/89F24F13/24F24F2013/247Y02B30/70
Inventor 陈成何阿龙胡佳伟何志超王晓妮
Owner GREE ELECTRIC APPLIANCES INC
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