A one-way dry filter

Abstract

The invention discloses a one-way dry filter, which comprises an inlet end cover and a filter core, and the inlet end cover and the filter core are in surface contact to locate the end of the filter core close to the inlet end cover. The one-way dry filter provided by the present invention saves the inlet buffer sheet, inlet retaining net and other components at the inlet, so that the assembly process can be greatly simplified; there is no crushing of the inlet buffer sheet during long-term use, resulting in failure of filter element positioning, The problem of blocking the filter channel is beneficial to prolong the service life of the one-way dry filter, and can improve the anti-vibration performance and filtration performance of the filter element; the inlet end cover and the filter element are positioned in surface contact, and the flow resistance of the middle and circumferential parts of the filter element Roughly the same, so that the utilization efficiency of the filter element is greatly improved, and the flow rate is greatly increased; there is no large cavity in the background technology between the inlet end cover and the filter element, and under the same condition of the filter element, the manufacturing materials can be greatly saved to reduce manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a one-way dry filter. Background technique [0002] The one-way dry filter is usually installed between the condenser and the expansion valve of the air-conditioning system. Its interior adopts a combination of drying and filtering design, which can effectively prevent the filtered matter and soluble matter from entering the key components of the air-conditioning system, so that the air-conditioning system can be used in the air-conditioning system. Operate in optimal working condition. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a specific embodiment of a commonly used one-way drying filter. [0004] Such as figure 1 As shown, the commonly used one-way dry filter includes the inlet end formed by the combination of the inlet pipe 01 and the inlet end cover 02, the cylindrical body 05 and the outlet end formed by the combination of the ...

AI Technical Summary

Problems solved by technology

[0007] 1) Due to the setting of the inlet retaining net 03 and the inlet buffer sheet 04, the flow resistance in the middle of the inlet end of the filter element 06 is relatively large, such as figure 1 As shown, when the cold medium flows to the middle of the inlet baffle 03, it is easy to turn back and tend to pass along the outer periphery of the inlet baffle 03 in a direction with less resistance, which leads to a low utilization rate of the filter element 06;

[0008] 2) There is a large cavity between the inlet baffle 03 and the inlet end cover 02. In this cavity, due to the blocking of the cold medium in the middle of the inlet baffle 03, turning back occurs, and the flow direction of the cold medium in the cavity is relatively chaotic. , will produce a turbulent flow zone, making the overall flow resistance of the one-way dry filter larger, the flow rate smaller, and the filtration efficiency lower;

[0009] 3) During long-term use, due to the vibration of the air-conditioning system, the inlet buffer sheet 04 between the inlet baffle 03 and the filter element 06 is easily crushed, resulting in the failure of the positioning between the inlet baffle 03 and the filter element 06, affecting the one-way service life of filter drier;

[0010] 4) The imported buffer sheet 04 is a soft material, which is prone to displacement or even falling off during the press-fitting process, and the assembly process is complicated

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