US 4,540,154 A · Solenoid valve

Abstract

A cartridge solenoid poppet valve (10) arranged to use a single size pilot valve (31) with any one of a set of a plurality of different size sets of valve seat members (14) and poppet valves (24). Pilot guides (175) are provided having different transverse extents to accommodate such different size valve members. The valve further includes a flatted pilot guide (32) defining flow passages communicated between a transfer chamber (35) and a pilot valve chamber (30) in which the pilot valve (31) is disposed. A T-slot (58) is provided in the solenoid plunger (38) extending fully diametrically thereacross and the pilot valve includes a T-shaped connecting head (71) received therein. The plunger (38) and plug (41) define cooperating stop surfaces (67,70) for maintaining a small spacing between the plunger and plug at all times. Solenoid structure (53) includes a parallelepiped frame (46) defining a space with the solenoid coil (44) received therein. The portion of the coil space not occupied by the coil is filled with a set synthetic resin. The structure includes a nut (52) threaded to a connecting portion (79) of a plug (41) to bear forcibly against a flange (51) on a washer (50) urging the washer axially outwardly against the solenoid frame (46) and thereby urging the frame outwardly against an adapter (11) arranged to be threaded to a port (73). The outer housing (49) is a configuration generally similar to the external configuration of the frame.

Claims8

Dependent claims

In a fluid flow control valve having a valve body and a movable valve member, solenoid structure for selectively positioning the valve member comprising:

an annular coil;
a tubular, rigid, one-piece frame having a sidewall and substantially planar parallel inner and outer end walls defining a coil space, the coil being centered therebetween to extend axially parallel to the sidewall;
a guide tube coaxially within said coil and having a portion spaced radially of and confronting said outer end wall;
a magnetic plunger slidable axially within said guide tube and being connected to said valve;
an adapter removably secured to the valve body and having an axially inwardly projecting annular boss abutting the frame outer end wall;
an annular washer abutting the frame inner end wall and having an annular axially inturned, radially inner flange;
a nut;
threaded plug means secured to the inner end of said guide tube and having an axially inner end projecting through said washer and defining an externally threaded connecting portion, said nut being threaded to said connecting portion to bear forcibly against an inner distal end of said flange and urge said washer axially outwardly against said inner end of the frame, and thereby urge said outer end of the frame axially outwardly against said adapter boss to lock the structure in coaxially assembled relationship;
and
an outer housing encapsulating the frame and retaining said washer in association with said frame inner end wall.

7 more elements

Dependencies are inferred from the claim text.

Solenoid valve

Life of this patent

Solenoid valve

Life of this patent

Abstract

Claims8