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1. (WO2018082216) FILTER ELEMENT OF AIR FILTER USED FOR INTERNAL COMBUSTION ENGINE OF AUTOMOBILE AND MANUFACTURING METHOD THEREFOR

Pub. No.:    WO/2018/082216    International Application No.:    PCT/CN2017/073288
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Mon Feb 13 00:59:59 CET 2017
IPC: F02M 35/024
Applicants: PINGYUAN FILTER CO., LTD
平原滤清器有限公司
Inventors: ZHANG, Hui
张惠
WANG, Pengfei
王鹏飞
WANG, Yingjun
王营军
GUO, Limin
郭黎民
Title: FILTER ELEMENT OF AIR FILTER USED FOR INTERNAL COMBUSTION ENGINE OF AUTOMOBILE AND MANUFACTURING METHOD THEREFOR
Abstract:
Disclosed is a filter element of an air filter used for an internal combustion engine of an automobile. The filter element comprises a transitional flat cylinder (1), wherein a sealing ring (3) is connected to a bottom end of the transitional flat cylinder (1); a filtering structure (4) adheres to an inner surface of the transitional flat cylinder (1); the filtering structure (4) extends downward out of the transitional flat cylinder (1); the filtering structure (4) comprises strip-shaped filter paper (5); the strip-shaped filter paper (5) is repeatedly folded into a corrugated form; cusps are formed at the folds of the strip-shaped filter paper (5); strip-shaped filter paper between two adjacent cusps forms a filtering surface; a plurality of rows of foamed structures are pressed on the strip-shaped filter paper along the length direction thereof; and upstream foamed structures (9) and downstream foamed structures (10) are alternately distributed. By using the device, more filter paper can be arranged in a small space, and the adhesion mode of foaming regions serves to prop open adjacent filtering surfaces. Also disclosed is a method for manufacturing the device, wherein the steps of the manufacturing process are simple and convenient, and the manufacturing efficiency is high.