Filter with silencing function and air conditioner using such filter

[0023] First embodiment

[0024] See figure 2 , A filter with silencing function, comprising a housing 1, which is a hollow cylindrical shape, with both ends contracting inwardly to form an interface 1.3. The ratio of the inner diameter L1 of the housing to the inner diameter L0 of the interface is greater than 1.5. A bump 1.1 is provided in the middle of the inner side of the housing 1. The wire mesh layer 4 for noise reduction is arranged between the two layers of filter meshes 3, and the filter mesh and the wire mesh layer 4 are fixed by a clamp 2.1 to form a filter and sound absorbing layer. The filter and sound-absorbing layer is then fixed in the middle of the housing 1 through the bump 1.1. The screen layer is made of SUS wire that has no chemical reaction with the refrigerant, and its thickness t is 0.5mm-20mm. The inner side of the interface 1.3 is provided with a positioning point 1.2, which is used to ensure the depth and consistency of the insertion tube into the filt

[0025] Second embodiment

[0026] See image 3 , A filter with a noise reduction function, a filter and noise reduction layer composed of a wire mesh layer 4 and a filter screen 3 is arranged near the interface 1.3 in the housing. The shoulder formed by the inward shrinkage of the housing 1 is used to limit one side of the filter and sound-absorbing layer; the other side of the filter and sound-absorbing layer is restricted by the convex point 1.1 provided on the inner side of the housing 1, thereby fixing it to the housing in vivo. Compared with the first embodiment, this design reduces the number of bumps by 1.1 and simplifies the production process. Other undescribed parts are the same as the first embodiment.

[0027] The third embodiment

[0028] See Figure 4 , A filter with silencing function, two layers of wire mesh 4 are arranged between the two layers of filter mesh 3, each layer of filter mesh 3 half-wraps the mesh layer 4 of its adjacent wire; A fixing member 2.2 is arranged in the middle, and each layer of silk mesh layer 4 is fixed to the fixing member 2.2 by the adjacent filter screen 3. The screen layer, the filter screen and the fixing member are fixed in the middle part of the shell through the bump 1.1. Other undescribed parts are the same as the first embodiment.