Filter with silencing function and air conditioner using such filter

Abstract

The invention discloses a filter with a silencing function. The filter comprises a shell, wherein the shell is hollow and cylindrical and the two ends of the shell shrink inwards to form ports; filter screens and a silencing silk screen layer are arranged in the shell; and the silk screen layer is fixedly arranged between two layers of filter screens, perforated plates or slit plates. The silk screen layer which is made by pressing SUS (Stainless Steel) wires is additionally arranged in the filter of the air conditioner. Since the silk screen layer consists of extremely fine wires, fine communicating gaps exist among the wires. When noise passes through the gaps of the silk screen, the noise is subjected to friction with the silk screen to be converted into heat energy to reduce a noise value. On the other hand, when two phases of refrigerants pass through the silk screen layer, the cavitation noise can be greatly reduced because of a cutting effect of the small gaps of the silk screen. Thus, the high frequency noise such as air flow impact noise and cavitation noise can also be greatly reduced apart from that the filtering capacity of the filter is further improved, so that the comfort of the air conditioner is greatly improved.

Description

technical field

[0001] The invention relates to a filter with sound-absorbing function and an air conditioner using the filter. Background technique

[0002] The functions of the traditional filter and the muffler are obviously different. The filter often has only one layer of filter screen. The main purpose is to filter impurities such as welding chips in the air conditioning system, and prevent impurities from entering the compressor, electronic expansion valve, capillary and other throttling components, causing system damage. Blockage or damaged compressor. Most of the existing mufflers are expansion-type resistant mufflers, and the noise reduction in some frequency bands can be realized by changing the pipe diameter, and the muffler frequency band is relatively narrow. The noise in the air-conditioning system is mainly refrigerant turbulence noise, cavitation noise and pressure pulsation noise, which belong to high-frequency noise in a wide frequency band. Using a conve...

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