JPH0414116U

JPH0414116U -

Info

Publication number: JPH0414116U
Application number: JP5348290U
Authority: JP
Priority date: 1990-05-22
Filing date: 1990-05-22
Publication date: 1992-02-05

Description

[Brief explanation of the drawing]

第１図は本考案を具体化した一実施例を示す断
面図、第２図ａ〜ｃは磁気センサの出力とピスト
ンの位置関係及び発光表示部の点灯状態等を示す
図である。ハウジング……１、フイルタエレメント……２
、収納筒……３、キヤツプ……５、圧縮流体入口
……７、圧縮流体出口……８、通路……９，１０
、室……１１、ピストン……１２、付勢手段とし
てのコイルばね……１４、磁気センサ……１７ａ
，１７ｂ、制御回路……１８、発光表示部を構成
する発光ダイオード……Ｌ１，Ｌ２，Ｌ３、空間
……Ｓ１，Ｓ２。 FIG. 1 is a sectional view showing an embodiment embodying the present invention, and FIGS. 2 a to 2 c are diagrams showing the positional relationship between the output of the magnetic sensor and the piston, the lighting state of the light emitting display section, etc. Housing...1, Filter element...2
, Storage tube...3, Cap...5, Compressed fluid inlet...7, Compressed fluid outlet...8, Passage...9,10
, chamber...11, piston...12, coil spring as biasing means...14, magnetic sensor...17a
, 17b, control circuit...18, light emitting diodes constituting the light emitting display section...L1, L2, L3, space...S1, S2.

Claims

[Claims for Utility Model Registration] A filter element 2 is disposed between a compressed fluid inlet 7 and a compressed fluid outlet 8 formed in the housing 1, and passages 9 and 10 are provided on the inlet 7 side and the outlet 8 side. A piston 12 that partitions the chamber 11 into a space S1 that communicates with the inlet side passage 9 and a space S2 that communicates with the outlet side passage 10 is slidably housed in the chamber 11 that communicates with the chamber 11 through the chamber 11. A biasing means 14 is provided within the piston 12 to apply a biasing force to the piston 12 to bias the piston 12 toward a predetermined position when the pressure balance in both the spaces S1 and S2 deviates from a predetermined state. At least a part of the piston 12 is formed of a magnetic material, and a plurality of magnetic sensors 17a, 17b are provided along the moving direction of the piston 12 to detect the magnetism of the magnetic material, and the plurality of magnetic sensors 17a, 17b are provided. A filter with a clogging detection device, characterized in that it is provided with light-emitting display sections L1, L2, and L3 that display the condition of the filter element 2 in at least three stages: good, ready for replacement, and required replacement based on the detection signal.