Electromagnetic valve device and coil former

Patent metadata

Field	Value
Publication number	US-10001223-B2
Application number	US-201414902624-A
Country	US
Kind code	B2
Filing date	May 28, 2014
Priority date	Jul 19, 2013
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

An electromagnetic valve device with an armature unit ( 10 ) which is designed for carrying out an opening or closing operation of a fluid channel and, as a reaction to stationary coil means ( 18, 20, 22 ), which at least partially surround the armature unit, being energized, is driveable so as to be movable along an axial direction ( 12 ) relative thereto, wherein the coil means have a coil former ( 20 ) which forms a winding section ( 20 ) for a winding ( 22 ) to be energized, and the coil former forms an axially extending inner casing which is designed for guiding the armature unit and in the lateral surface of which slot- or groove-like channels ( 54 ) permitting drainage of an armature movement space are formed, wherein the coil former provides a channel outlet ( 56 ) for the channels ( 54 ) lying axially opposite an inlet- or respectively outlet section ( 24 ) of the fluid channel and on the end face, with which channel outlet blocking and/or deflection means against infiltrating intrusive media are associated.

First claim

The invention claimed is:

1. An electromagnetic valve device with
an armature unit ( 10 ) which is designed for carrying out an opening or closing operation of a fluid channel
and, as a reaction to stationary coil means ( 18 , 20 , 22 ), which at least partially surround the armature unit, being energized, is driveable so as to be movable along an axial direction ( 12 ) relative thereto,
wherein the coil means have a coil former ( 20 ) which forms a winding section ( 20 ) for a winding ( 22 ) to be energized, and
the coil former forms an axially extending inner casing which is designed for guiding the armature unit and in a lateral surface of which slot- or groove-like channels ( 54 ) permitting drainage of an armature movement space are formed, wherein
the coil former provides a channel outlet ( 56 ) for the channels ( 54 ) lying axially opposite an inlet- or respectively outlet section ( 24 ) of the fluid channel and on an end face, with which channel outlet blocking and/or deflection means against infiltrating intrusive media are associated, wherein fluid guide sections ( 74 ) are associated with the coil former for formation of a section of the fluid channel, which fluid guide sections are arranged radially outwards and have deflection and/or meander means ( 76 ) as plate-like projections to form an axially directed labyrinth flowpath, and wherein the fluid guide sections ( 74 ) are realized as an assembly connected on a casing side with the winding section, sitting laterally thereon.

2. The device according to claim 1 , wherein the coil former forms the axially extending inner casing in a region of the winding section.

3. The device according to claim 1 , wherein the coil former ( 18 ) forms at an axial end the inlet or respectively outlet section ( 24 ) of the fluid channel, which sits in one piece on the winding section ( 20 ) and is constructed so as to be able to be closed by a closure section ( 34 ) provided axially on the end face on or in the armature unit.

4. The device according to claim 1 , wherein the channels run at least in sections axially parallel to the axial direction ( 12 ) and continue in a stationary core unit ( 14 ) provided coaxially and for magnetic cooperation with the armature unit on or in the coil former.

5. The device according to claim 1 , wherein the assembly is a plastic injection part.

6. The device according to claim 1 , wherein the coil former is realized as a one-piece injection part of a plastic material.

7. An electromagnetic valve device with
an armature unit ( 10 ) which is designed for carrying out an opening or closing operation of a fluid channel
and, as a reaction to stationary coil means ( 18 , 20 , 22 ), which at least partially surround the armature unit, being energized, is driveable so as to be movable along an axial direction ( 12 ) relative thereto,
wherein the coil means have a coil former ( 20 ) which forms a winding section ( 20 ) for a winding ( 22 ) to be energized, and
the coil former forms an axially extending inner casing which is designed for guiding the armature unit and in a lateral surface of which slot- or groove-like channels ( 54 ) permitting drainage of an armature movement space are formed, wherein
an inlet or respectively outlet section ( 24 ) of the fluid channel is connected via web sections ( 58 , 60 ) in a cage-like manner with the winding section ( 20 ) so that a fluid flow can take place of fluid entering from axially outwards into the inlet or respectively outlet section, when a closure section ( 34 ) provided axially on an end face on or in the armature unit does not engage on the inlet or respectively outlet section, wherein fluid guide sections ( 74 ) are associated with the coil former for formation of a section of the fluid channel, which fluid guide sections are arranged radially outwards and have deflection and/or meander means ( 76 ) as plate-like projections to form an axially directed labyrinth flowpath, and wherein the fluid guide sections ( 74 ) are realized as an assembly connected on a casing side with the winding section, sitting laterally thereon.

8. The device according to claim 7 , wherein the coil former forms the axially extending inner casing in the region of the winding section.

9. The device according to claim 7 , wherein the inlet or respectively outlet section forms a channel ( 28 ) constructed in a nozzle-like manner and/or widening axially on the end face, which channel forms axially in the direction of the armature unit a closure seat ( 32 ) for cooperation with the closure section ( 34 ) of the armature unit.

10. The device according to claim 7 , wherein the channels run at least in sections axially parallel to the axial direction ( 12 ) and continue in a stationary core unit ( 14 ) provided coaxially and for magnetic cooperation with the armature unit on or in the coil former.

11. The device according to claim 7 , wherein the assembly is a plastic injection part.

12. The device according to claim 7 , wherein the coil former is realized as a one-piece injection part of a plastic material.

13. A coil former for an electromagnetic adjustment device with a winding section ( 20 ), constructed for provision of a winding ( 22 ), extending along an axial direction ( 12 ) which forms an interior space ( 16 ) designed for guiding an armature unit ( 10 ) along the axial direction, wherein
the coil former has axially at one end an inlet and/or outlet section ( 24 ) sitting in one piece, so that an armature unit ( 10 ) guided in the interior space
in a closure position can close an axially internally-lying closure seat ( 32 ) of the inlet or respectively outlet section
and in an opening position, fluid flowing into the inlet or respectively outlet section can pass through an opening ( 62 ) or an aperture of the coil former between the inlet or respectively outlet section and the winding section, wherein fluid guide sections ( 74 ) are associated with the coil former for the formation of a section of the fluid channel, which fluid guide sections are arranged radially outwards and have deflection and/or meander means ( 76 ) as plate-like projections to form an axially directed labyrinth flowpath, and wherein the fluid guide sections ( 74 ) are realized as an assembly connected on a casing side with the winding section, sitting laterally thereon.

Assignees

• Eto Magnetic Gmbh

Inventors

• Vincon Peter
• Bender Stefan

Classifications

• F16K31/0693

  Pressure equilibration of the armature · CPC title

• H01F7/1607

  Armatures entering the winding · CPC title

• F16K27/029 Primary

  Electromagnetically actuated valves · CPC title