Noise reduction structure of indoor unit of air conditioner, indoor unit of air conditioner and air conditioner

A technology for indoor cabinets and air-conditioning rooms, which is used in noise suppression and other directions to achieve the effects of high sound absorption coefficient, improved user experience comfort, and wide applicability

Active Publication Date: 2013-11-06
MIDEA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the noise reduction of the above-mentioned existing air-conditioning cabinet has reached a limit after measures such as sound-absorbing volute, inclined volute tongue, and changing the air inlet and outlet, and provides a simple structure, easy processing, Air-conditioning indoor cabinet machine noise reduction structure with low cost and capable of effectively reducing noise of air-conditioning indoor cabinet machine, and air-conditioning indoor cabinet machine and air conditioner adopting the noise reduction structure

Method used

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  • Noise reduction structure of indoor unit of air conditioner, indoor unit of air conditioner and air conditioner
  • Noise reduction structure of indoor unit of air conditioner, indoor unit of air conditioner and air conditioner
  • Noise reduction structure of indoor unit of air conditioner, indoor unit of air conditioner and air conditioner

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Embodiment 1

[0053] see Figure 2 to Figure 8 The noise-reducing structure of the air-conditioning indoor cabinet machine provided by the present invention includes an indoor cabinet machine shell 1 and an air outlet 10 opened on the indoor cabinet machine shell 1. The air outlet plate 2 connected to the inner wall of the air outlet plate 2 is formed with an air outlet channel 110 communicating with the air outlet 10 on the side of the air outlet plate 2 close to the air outlet 10; The casing 1 encloses and forms a cavity 120 , and the air outlet plate 2 is provided with a plurality of micro-perforated plate sound-absorbing structures.

[0054] In this embodiment, the sound-absorbing structure of the micro-perforated plate is the micro-hole 20 penetrating the air outlet plate 2 . The outlet part of the air supply is usually made of plastic parts, and holes are punched on the outlet plastic air outlet plate 2. The diameter of the microholes 20 is 1 mm to 2 mm. In theory, the smaller the di...

Embodiment 2

[0063] see Figure 9 to Figure 12 , The difference between this embodiment and Embodiment 1 is that the sound-absorbing structure of the micro-perforated plate is the micro-slit 21 that runs through the air outlet plate 2, the width of the micro-slit 21 is 1 mm to 2 mm, and the perforation rate of the micro-slit 21 is that all the micro-slits 21 The proportion of the total area of ​​the air outlet plate 2 to the total area of ​​the air outlet plate 2 ranges from 1% to 5%. The micro slits 21 can be opened horizontally, vertically, obliquely or crosswise on the air outlet plate 2, but considering the convenience of processing, generally do into the same direction as the drawing die. Compared with the micro-orifice plate in Example 1, the sound absorption effect of the micro-slit 21-orifice plate is slightly worse (about 0.3dBA), but the opening of the slit in the orifice plate is convenient for engineering implementation due to the simple manufacturing process. Other structures...

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Abstract

A control apparatus for reducing noise of an air conditioner indoor cabinet comprises an air outlet arranged on the indoor cabinet and an air-out plate attached to the air outlet. Pressurized air flow passes through the air-out plate and is then delivered out of the indoor cabinet from the air outlet. The air-out plate is provided with micro pores and / or micro slits. The porosity of the micro pores and / or micro slits is 3% to 5%. The micro pores are arranged in a square or a regular triangle shape. The diameter of the micro pores is 1 mm to 2 mm, and / or the width of the micro slits is 1 mm to 2 mm. The micro slits are transversely, longitudinally, obliquely, or crosswise arranged. A cavity is arranged at the back of the air-out plate. The thickness of the cavity is 5 to 20 cm. The outward side of the cavity is provided with a sound absorption layer. The apparatus of the invention has the characteristics of simple and reasonable structure, easy processing, low noise, wide scope of application, high sound absorption coefficient, and wide sound absorption frequency, and can effectively reduce the noise of the air conditioner indoor cabinet.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning equipment manufacturing, and more specifically relates to a noise-reducing structure for an indoor air-conditioning cabinet, an indoor cabinet for air-conditioning and an air conditioner using the noise-reducing structure. Background technique [0002] Air-conditioning indoor cabinets have been widely used in people's daily life and modern office environments. Although the noise index of air-conditioning products has been lower than the national standard, the noise generated by the air-conditioner is still too loud, which greatly affects the user experience and cannot meet the requirements of users. The noise generated by the indoor cabinet machine includes mechanical noise and airflow noise, but the airflow noise is much greater than the mechanical noise. The airflow noise mainly includes air intake noise, fan noise (rotating noise and vortex noise), heat exchange evaporator noise and ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F13/24
Inventor 薛玮飞周拨冯锦平沈展良
Owner MIDEA GRP CO LTD
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