Three-sectional expansion-resistance composite muffler applied at air outlet of heat pump

Abstract

The invention discloses a three-sectional expansion-resistance composite muffler applied at an air outlet of a heat pump. The composite muffler is characterized in that a plurality of sections, namely a first expansion chamber section, a second expansion chamber section, a third expansion chamber section and a resistant muffler section are sequentially arranged in series in the air outlet direction in an air duct from an air outlet of a self-heating pump to an air outlet of a muffler; the air outlet of the self-heating pump is connected with the air inlet end port of the first expansion chamber; the air outlet of the muffler is the air outlet end port of the resistant muffler section; in all expansion chamber sections, the air inlet and the air outlet of each of the expansion chamber sections are in staggered positions; adjacent expansion chamber sections take the air outlet of the previous expansion chamber section as the air inlet of the next expansion chamber section, so as to form a Z-shaped air outlet direction. The three-sectional expansion-resistance composite muffler applied at the air outlet of the heat pump has better soundproofing properties against low-frequency, middle-frequency and high-frequency noises in a limited available space on the premise of ensuring the ventilation quantity requirement.

Description

technical field [0001] The invention belongs to the noise control technology, and more specifically relates to a three-section expansion-resistance composite muffler applied at the air outlet of a heat pump. Background technique [0002] Heat pump units are widely used in hotels, restaurants, shopping malls, hospitals and other places due to their characteristics of energy saving, environmental protection and combined cooling and heating. These places are often close to residential areas, and the heat pump unit generates strong noise when it is running, with high decibel value and wide frequency band, which is easy to have a certain impact on the surrounding environment. For the noise reduction treatment of this kind of noise, the single-section expansion chamber-resistive composite noise reduction technology is basically used in the existing technology, but this technology occupies a large area and the low-frequency processing effect is not good. Contents of the invention...

AI Technical Summary

Problems solved by technology

These places are often close to residential areas, and the heat pump unit generates strong noise when it is running, with high decibel value and wide frequency band, which is easy to have a certain impact on the surrounding environment

For the noise reduction treatment of this kind of noise, the single-section expansion chamber-resistive composite noise reduction technology is basically used in the existing technology, but this technology occupies a large area and the low-frequency processing effect is not good

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