Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1987-04-01
1988-11-08
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Including solenoid
251 88, F16K 3106
Patent
active
047830514
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a solenoid valve having a connection between the armature and valve member permitting relative axial and radial movement.
BACKGROUND OF THE INVENTION
In a known solenoid valve on this type disclosed in DE-GM No. 69 04 282, the valve member is configured as a disk so that it need not be aligned with the axis of the stationary valve seat for a tight fit. The closing spring is mounted in a borehole of the armature. This spring serves as the base of a support bolt engaging in the armature.
Another known solenoid valve, disclosed in DE-OS No. 27 40 646, has a valve member with spherical seat parts arranged at its ends, of which the heads are turned toward each other. The shaft connecting the spherical seat parts is guided in a borehole. A spring, exerting a closing force on the adjacent ball part resting on its valve seat, is provided at each end of the valve member.
A solenoid valve disclosed in DE-OS No. 22 08 183 has an adjustable connection between the armature and the valve member, and has a spherical bearing.
A solenoid valve disclosed in DE-AS No. 12 49 043 has an anti-adhesion disk between the armature and the pole shoe.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a solenoid valve wherein the valve closing involves a tight fit of the valve member with a conical seat.
The foregoing object is obtained by a solenoid valve, comprising a control magnet, an armature mounted within the magnet for reciprocating movement, a conical valve seat, and a valve member movable toward and away from the valve seat. The armature and valve member are connected such that the armature actuates movement of the valve member relative to the valve seat and permits limited relative axial and radial movement of the armature and the valve member. The armature-valve member coupling includes an annular groove in the valve member and a sliding disk fixed against the armature by a flanged, ring-like protection. The sliding disk is generally U-shaped and insertable in a radial direction into the annular groove in the valve member. The groove has axial ends defined by shoulders on the valve member. The shoulders are spaced apart by a distance greater than the thickness of the sliding disk to permit the limited relative axial movement between the armature and the valve member.
The sliding or adjustable connection provides a tight fit of the valve member to its valve, since the valve member can be adjusted axially and radially. The connection is of a simple nature, and can be manufactured without great cost. The armature can be fitted with relatively small clearance in the magnet housing.
To allow the movable valve member a good fit on the stationary valve seat, when the valve member has a spherical seat part, it is traditional to allow the valve member radial adjustability while it is also linked with the armature. With such an adjustability, however, the valve member cannot be tightly closed, see e.g., DE-GM No. 69 04 282.
The valve member can be mounted in a bore in the armature with a spherical bearing to prevent friction between the armature and the valve member during reciprocal radial movement.
Other objects, advantages and salient features of the present invention will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a preferred embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to the drawings which form a part of this disclosure:
FIG. 1 is a side elevational view in section of a solenoid valve according to the present invention; and
FIG. 2 is an enlarged, partial side elevational view in section of the solenoid valve of FIG. 1.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
The solenoid valve according to the present invention comprises a control magnet 1 with an exciter winding 2 wound on a coil 4. Casing rings 5 and 6 are provided on the axial ends of coil 4. The outside of exciter winding 2 and the periphery of each casing ring 5,
REFERENCES:
patent: 2114961 (1938-04-01), Gille
patent: 2223986 (1940-12-01), Eatop
patent: 2698159 (1954-12-01), Crum
patent: 3970282 (1976-07-01), Hansen
Flutec Fluidtechnische Gerate GmbH
Rosenthal Arnold
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