SU1221443A1 - Solenoid valve - Google Patents

Description

one

The invention relates to reinforcement and can be used in hydraulic and pneumatic systems for regulating the supply of working medium.

The purpose of the invention is to reduce the energy consumption of an electromagnetic drive due to partial compensation of the flux of a permanent magnet.

The drawing shows schematically the proposed valve, a general view.

The solenoid valve consists of a housing 1 with an inlet 2 and an outlet 3 channels, in which a locking member is spring-loaded 4. 5, which is rigidly connected with a bark 6 placed inside the sleeve 7, the sleep of which is located around the electromagnet winding 8, is covered with a casing 9 made of a soft material magnet. Anchor 6 is hollow. Inside the core 6, a permanent magnet 10 and a magnetic shunt 11 are installed, and between the permanent magnet 10 and the inner surface of the core there is an annular gap 12. The centering of the core 6 is carried out using a guide 13, made of a non-magnetic material.

The solenoid valve operates as follows.

In the open position, the bark 6 is held by the force of the permanent magnet 10, the magnetic flux

Editor Y. Sereda

Compiled by V. Korolyov Tekhred L. Oleinik

Order 1568/44

Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

214431

which closes along the contour indicated in the drawing by a continuous line. When current is applied to the electromagnet winding, magnetic flux 5 closes along the contour housing 1 — measles 6 — housing 1 — casing 9 — housing 1, is indicated on the drawing by a dash-dotted line.

10 If in the area indicated in the drawing by arrow A, the magnetic flux of the electromagnet is directed oppositely to the flux of a permanent magnet, then as a result of partial compensation of the magnetic flux of the permanent magnet in the annular gap 12, the force of attraction of the cortex 6 decreases and the joint with the locking organ 5 under the action of the spring 4

20 moves upwards along the guide 13 and closes channel 2.

In order to open the valve, an electric pulse is applied to the windings of the electromagnet 8, creating the same polarity of the magnetic flux with the same permanent magnet. Due to the addition of magnetic fluxes of the same polarity in the section of the magnetic circuit A, made with the gap 3, the measles 6 under the action of the total magnetic force of the attraction, overcoming the force of the spring 4, will move downwards, while the overhang body 5 reports the input 2. and output 3 channels.

Proofreader L. Patay

Claims (1)

ELECTROMAGNETIC VALVE, comprising a housing with inlet and outlet channels, in which a spring-loaded shut-off element is installed,. rigidly connected to the anchor located inside the sleeve, on the outside of which the winding of the electromagnet is located, and a permanent magnet, characterized in that, in order to reduce energy consumption, the armature is hollow, and the permanent magnet is installed inside the cavity of the armature with an annular gap.