Noise testing device and noise testing method for a duct type air conditioner

Abstract

The invention discloses a noise testing device and a noise testing method for a duct type air conditioner. The device comprises a housing which is internally provided with an assembly cavity for the assembly of a duct type air conditioner, a first air return part arranged on one side wall of the housing and communicated with an external space and the assembly cavity, a second air return part arranged at the bottom of the housing and communicated with the external space and the assembly cavity, an air outlet part communicated with the assembly cavity and arranged on the side wall, opposite to the first air return part, of the housing, a hoisting part arranged on the outer side of the housing and used for hoisting the testing device, a noise pickup device for picking up a noise value, and amain controller in communication connection with the noise pickup device and at least capable of receiving noise signals sent by the noise pickup device. Therefore, problems of large noise value deviation and low measurement accuracy of a wind pipe machine noise test in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of noise reduction, in particular to a device for testing the noise of an air duct machine and a noise testing method using the noise testing device. Background technique [0002] Existing air duct machines need to be tested for noise before leaving the factory to make them meet the noise value requirements stipulated in national standards. The existing detection method is: hoist the air duct machine on the roof at a certain height, and then A sound level meter microphone is installed at a position 1 meter away from the air outlet horizontally and vertically to obtain the noise value at the air outlet and realize the measurement of the noise value. However, the noise value measured by this measurement method is different from the actual value of the air duct machine. The environment of the installed ceiling is not suitable. When the air duct machine is installed in the ceiling, its corresponding wind field a...

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Problems solved by technology

[0003] In order to solve the problems of large noise value deviation and low measurement accuracy in the noise test of the air duct machine in the prior art, the present invention provides a noise test device for the air duct machine. When performing a noise test on the air duct machine, the air duct can be The machine is assembled in the test device, and the test device simulates the ceiling environment of the actual installation of the air duct machine, reducing the deviation of noise measurement and improving the accuracy of measurement

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