Magnetic Valve and Driver Assistance Device Comprising said type of Magnetic Valve

• US 20120267554A1
• Filed: 10/28/2010
• Published: 10/25/2012
• Est. Priority Date: 12/23/2009
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Heyer, Klaus, Kurz, Edgar, Stokmaier, Gerhard, Kratzer, Dietmar
• Granted Patent: US 9,139,179 B2
• Time in Patent Office: Days
• US Class Current: 251/118
• CPC Class Codes: B60T 8/363 in hydraulic systems B60T8/3655, B60T8/3675 and B60T8/369 take precedence
• CPC Class Codes: F16K 31/0665 with valve member being at least partially ball-shaped F16K31/0662 takes precedence
• CPC Class Codes: F16K 31/0693 Pressure equilibration of the armature
• CPC Class Codes: F16K 31/0696 Shock absorbing, e.g. using a dash-pot

Abstract

A magnetic valve includes a valve body having a valve seat which can be closed by a sealing element, at least one outlet channel which leads into a fluid chamber of the magnetic valve, receiving the sealing element at least in parts, and a flow guiding element which surrounds the sealing element at least in parts. The sealing element is operatively connected to a magnet armature arranged in a magnet armature chamber embodied on one side of the flow guiding element facing away from the fluid chamber. The valve body and the flow guiding element together form at least one connection channel producing a fluidic connection between the fluid chamber and the magnet armature chamber.

Claims

1. A solenoid valve comprising:

a valve body including a valve seat closable by means of a sealing element, at least one outlet duct issuing into a fluid space, receiving the sealing element at least in regions, of the solenoid valve; and

a flow guide element surrounding the sealing element at least in regions,

wherein the sealing element is operatively connected to a magnet armature arranged in a magnet armature space formed on a side of the flow guide element which faces away from the fluid space, and

wherein the valve body and the flow guide element jointly form at least one connecting duct making a fluid connection between the fluid space and the magnet armature space.

2. The solenoid valve as claimed in claim 1, wherein the connecting duct is present between an inner wall of the valve body and an outer wall of the flow guide element.

3. The solenoid valve as claimed in claim 1, wherein:

at least one radial duct is formed in the valve body, and

the at least one radial duct makes a fluid connection between the outlet duct and the connecting duct.

4. The solenoid valve as claimed in claim 1, wherein:

the flow guide element lies on a bottom of the fluid space, and

the radial duct passes through the bearing surface of the flow guide element.

5. The solenoid valve as claimed in claim 1, wherein the valve body has in its inner wall and/or the flow guide element has in its outer wall a recess which conforms the connecting duct.

6. The solenoid valve as claimed in claim 1, wherein the connecting duct and/or the radial duct are at least in regions round in cross section.

7. The solenoid valve as claimed in claim 1, wherein the flow guide element is composed of metal or of plastic.

8. The solenoid valve as claimed in claim 1, wherein the flow guide element is made as a stamped and bent part or as an injection molding.

9. The solenoid valve as claimed in claim 1, further comprising:

an alignment means for aligning the flow guide element in the fluid space in the circumferential direction.

10. A driver assistance device, comprising:

at least one solenoid valve, including (i) a valve body having a valve seat closable by means of a sealing element, at least one outlet duct issuing into a fluid space, receiving the sealing element at least in regions, of the solenoid valve, and (ii) a flow guide element surrounding the sealing element at least in regions,

wherein the sealing element is operatively connected to a magnet armature arranged in a magnet armature space formed on a side of the flow guide element which faces away from the fluid space, and

wherein the valve body and the flow guide element jointly form at least one connecting duct making a fluid connection between the fluid space and the magnet armature space.