Solenoid Valve and Method for Operating a Solenoid Valve
First Claim
1. A solenoid valve comprising:
- a valve housing;
a magnetic core;
a metallic armature plate interacting with the magnetic core;
a valve body actuated by the armature plate;
wherein the solenoid valve comprises a first travel position defined by a first distance measured between the armature plate and the magnetic core and further comprises a second travel position defined by a second distance measured between the armature plate and the magnetic core, wherein the first distance is longer than the second distance;
wherein a flow communication through the solenoid valve in one of the first and second travel positions is open and in the other one of the first and second travel positions is blocked;
wherein the armature plate comprises a travel from the first travel position to the second travel position and wherein the armature plate comprises an intermediate position located between the first travel position and the second travel position;
a first spring element acting on the armature plate across the entire travel of the armature plate from the first travel position into the second travel position;
a second spring element acting on the armature plate in addition to the first spring element, wherein the second spring element begins to act on the armature plate from the intermediate position of the armature plate onward toward the second travel position.
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Accused Products
Abstract
A solenoid valve has a valve housing, a magnetic core, and an armature plate interacting with the magnetic core and actuating a valve body. The solenoid valve has first and second travel positions defined by first and second distances measured between armature plate and magnetic core, respectively. The first distance is longer than the second distance. Flow through the solenoid valve is possible in one of the first and second travel positions and blocked in the other. The armature plate has a travel from first to second travel position and has an intermediate position located between first and second travel positions. A first spring element acts on the armature plate across the entire travel from first to second travel position. A second spring element acts additionally on the armature plate and begins acting from the intermediate position of the armature plate onward toward the second travel position.
2 Citations
16 Claims
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1. A solenoid valve comprising:
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a valve housing; a magnetic core; a metallic armature plate interacting with the magnetic core; a valve body actuated by the armature plate; wherein the solenoid valve comprises a first travel position defined by a first distance measured between the armature plate and the magnetic core and further comprises a second travel position defined by a second distance measured between the armature plate and the magnetic core, wherein the first distance is longer than the second distance; wherein a flow communication through the solenoid valve in one of the first and second travel positions is open and in the other one of the first and second travel positions is blocked; wherein the armature plate comprises a travel from the first travel position to the second travel position and wherein the armature plate comprises an intermediate position located between the first travel position and the second travel position; a first spring element acting on the armature plate across the entire travel of the armature plate from the first travel position into the second travel position; a second spring element acting on the armature plate in addition to the first spring element, wherein the second spring element begins to act on the armature plate from the intermediate position of the armature plate onward toward the second travel position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification
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- Resources
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Current AssigneeAndreas STIHL AG & Company KG (Stihl Holding AG & Company KG)
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Original AssigneeAndreas STIHL AG & Company KG (Stihl Holding AG & Company KG)
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InventorsGeyer, Klaus, Ramler, Jens
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Application NumberUS16/662,079Publication NumberTime in Patent OfficeDaysField of SearchUS Class CurrentCPC Class CodesF16K 31/0651 the fluid passing through t...F16K 31/0655 Lift valvesF16K 31/0675 Electromagnet aspects, e.g....F16K 31/566 using a bistable spring dev...
