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Method and device for detecting abnormal sound of air conditioner indoor unit

An air-conditioning indoor unit and detection method technology, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of high labor costs and inconsistent detection and evaluation standards of abnormal sound, and achieve the effect of reducing labor costs

Active Publication Date: 2019-03-08
HANDAN MIDEA REFRIGERATION EQUIP
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method and device for detecting abnormal sound of an air conditioner indoor unit, aiming at solving the technical problems that the evaluation criteria for abnormal sound detection cannot be unified and the labor cost is high

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  • Method and device for detecting abnormal sound of air conditioner indoor unit
  • Method and device for detecting abnormal sound of air conditioner indoor unit
  • Method and device for detecting abnormal sound of air conditioner indoor unit

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Embodiment Construction

[0055] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] The invention provides a method for detecting abnormal sound of an air conditioner indoor unit, referring to figure 1 , figure 1 It is a schematic flow chart of the method for detecting abnormal sound of an air-conditioning indoor unit of the present invention. The method for detecting abnormal sound of an air-conditioning indoor unit proposed by the present invention includes the following steps:

[0057] Step S10, collecting the first sound signal when the air conditioner indoor unit to be detected is running;

[0058] In this embodiment, the artificial head can be used to collect the first sound signal in the semi-anechoic chamber, so as to ensure the high-fidelity effect of simulating the on-site feeling of the human ear. When collecting the first sound signal, place the air-conditioning indoor unit to be...

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Abstract

The invention discloses a method for detecting the abnormal sound of an air-conditioning indoor set, and the method comprises the steps: collecting a first sound signal of a to-be-detected air-conditioning indoor set during operation; taking a to-be-detected frequency point as the central frequency, and calculating a first critical frequency band noise value and a first single-frequency noise value, which are corresponding to a first sound signal; determining a reference abnormal sound detection threshold value corresponding to the to-be-detected frequency point; determining that the abnormal detection result of the to-be-detected air-conditioning indoor set is qualified when the difference between the first critical frequency band noise value and the first single-frequency noise value is greater than the reference abnormal sound detection threshold value, or else, determining that the abnormal detection result of the to-be-detected air-conditioning indoor set is not qualified. The invention discloses a device for detecting the abnormal sound of the air-conditioning indoor set. During the detection of abnormal sound, an evaluator does not participate each time, and just needs to detect the abnormal sound according to the abnormal sound detection threshold value, thereby effectively unifying the evaluation standard of abnormal sound detection and reducing the manpower cost.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for detecting abnormal sound of an air conditioner indoor unit. Background technique [0002] At present, people's requirements for air conditioners are getting higher and higher. Air conditioners not only need to meet the basic functional requirements such as cooling and heating, but also need to meet the requirements for quiet and comfortable experience. Common abnormal noises of air-conditioning indoor units are divided into howling sound, refrigerant sound, compressor transmission sound, refrigerant transmission sound, motor abnormal sound and narrow-band noise, etc. Noise complaints have long existed in air-conditioning companies. In order to reduce noise complaints, factory All air conditioners meet the requirements of noise testing. Before leaving the factory, the air conditioners generally need to pass the abnormal sound test. After the abnorm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 冯锦平
Owner HANDAN MIDEA REFRIGERATION EQUIP
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