Non-return valve for a solenoid valve and associated solenoid valve

Patent metadata

Field	Value
Publication number	US-10865897-B2
Application number	US-201715634562-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jul 11, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A non-return valve for a solenoid valve includes a non-return valve seat and a movable closure element. The valve seat is arranged at an edge of a fluid channel. The movable closure element is configured to carry out a direction-orientated throughflow and sealing function. The closure element includes a sealing cone, an abutment base, and a resilient sealing ring. The sealing ring is arranged between the abutment base and the sealing cone. The abutment base forms, in the event of sealing, a support face for the resilient sealing ring. At an edge of the non-return valve seat there is a first support face which in the event of sealing forms with a second support face which is formed at the outer edge of the abutment base in the direction of the non-return valve seat a mechanical axial stop for the movable closure element.

First claim

What is claimed is:

1. A non-return valve for a solenoid valve, the non-return valve comprising:
a non-return valve seat arranged at an edge of a fluid channel; and
a movable closure element configured to carry out a direction-orientated throughflow and sealing function, the movable closure element including a sealing cone, an abutment base, and a resilient sealing ring, the resilient sealing ring arranged between the abutment base and the sealing cone, wherein:
the abutment base forms, in the event of sealing, a ring support face portion for the resilient sealing ring,
a mechanical axial stop portion extends toward the abutment base from the non-return valve seat and includes a first support face facing the abutment base,
a second support face portion is formed at an outer edge of the abutment base facing the first support face and spaced apart from the ring support face portion,
in the event of sealing, the first support face forms with the second support face portion a mechanical axial stop for the movable closure element with the resilient sealing ring contacting the non-return valve seat and an axially extending side of the mechanical axial stop portion,
the mechanical axial stop portion is a protrusion of the lower valve portion in which the non-return valve seat is formed,
the protrusion defines a first outer diameter,
the abutment base defines a second outer diameter, and
the second outer diameter matches the first outer diameter.

2. The non-return valve according to claim 1 , wherein the abutment base has a circular base face.

3. The non-return valve according to claim 1 , wherein:
a groove is formed between the abutment base and the sealing cone, and
the groove partially receives the resilient sealing ring.

4. The non-return valve according to claim 1 , wherein the movable closure element includes a reinforcement at a transition between the abutment base and the sealing cone.

5. The non-return valve according to claim 1 , wherein the movable closure element is an injection-molded plastics component.

6. The non-return valve according to claim 1 , wherein the resilient sealing ring is an O-ring seal.

7. A solenoid valve, comprising:
a magnet subassembly;
a valve cartridge; and
a lower valve portion including a fluid inlet and a fluid outlet, wherein:
a first fluid channel is formed between the fluid inlet and the fluid outlet, the first fluid channel having a flow cross-section configured to be adjusted by a main valve,
a second fluid channel is formed between the fluid inlet and the fluid outlet, the second fluid channel having a flow cross-section configured to be adjusted by a direction-orientated non-return valve, and
the non-return valve includes:
a non-return valve seat arranged at an edge of the second fluid channel; and
a movable closure element configured to carry out a direction-orientated throughflow and sealing function, the movable closure element including a sealing cone, an abutment base, and a resilient sealing ring, the resilient sealing ring arranged between the abutment base and the sealing cone, wherein:
the abutment base forms, in the event of sealing, a ring support face portion for the resilient sealing ring,
a mechanical axial stop portion extends toward the abutment base from the non-return valve seat and includes a first support face facing the abutment base
a second support face portion is formed at an outer edge of the abutment base facing the first support face and spaced apart from the ring support face portion,
in the event of sealing, the first support face forms with the second support face portion a mechanical axial stop for the movable closure element with the resilient sealing ring contacting the non-return valve seat and an axially extending side of the mechanical axial stop portion,
the mechanical axial stop portion is a protrusion of the lower valve portion,
the protrusion defines a first outer diameter,
the abutment base defines a second outer diameter, and
the second outer diameter matches the first outer diameter.

8. The solenoid valve according to claim 7 , wherein the non-return valve seat is formed in the lower valve portion.

9. The solenoid valve according to claim 7 , wherein the abutment base, in an open state of the non-return valve, is in abutment with an abutment.

10. The solenoid valve according to claim 9 , wherein at least one of the lower valve portion and a flat filter which is introduced into the lower valve portion forms the abutment.

11. A solenoid valve, comprising:
a magnet subassembly;
a valve cartridge;
a lower valve portion including a fluid inlet and a fluid outlet;
a first fluid channel formed between the fluid inlet and the fluid outlet, the first fluid channel having a flow cross-section configured to be adjusted by a main valve;
a second fluid channel formed between the fluid inlet and the fluid outlet; and
a direction-orientated non-return valve configured to adjust a flow cross-section of the second fluid channel, the direction-orientated non-return valve comprising:
a closure element movable along an axis, the closure element including a sealing cone, an abutment base, and a resilient sealing ring, a ring support face portion of the abutment base supporting the resilient sealing ring at a location between the abutment base and the sealing cone;
a non-return valve seat having an inlet extending from the second fluid channel; and
a mechanical axial stop portion extending toward the abutment base from the non-return valve seat to and including a first support face extending directly radially outwardly from an outlet of the non-return valve seat, the first support face in opposition to and facing a second support face portion of the abutment base, which is coplanar with the ring support face portion, at a location radially outwardly of the resilient sealing ring, such that in the event of sealing, the first support face forms with the second support face portion a mechanical axial stop for the movable closure element with the resilient sealing ring contacting the non-return valve seat and the mechanical axial stop portion, wherein
the mechanical axial stop portion is a protrusion of the lower valve portion,
the protrusion defines a first outer diameter,
the abutment base defines a second outer diameter, and
the second outer diameter matches the first outer diameter.

Assignees

• Bosch Gmbh Robert

Inventors

• Belmonte Enrico
• Buchenau Ingo
• Winkler Martin
• Hilden Michael
• Schepp Rene
• Weitze Thomas
• Schelldorf Thorsten

Classifications

• F16K15/021

  the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence) · CPC title

• F16K15/18 Primary

  with actuating mechanism; Combined check valves and actuated valves · CPC title

• F16K31/0655

  Lift valves · CPC title