Non-Return Valve for a Solenoid Valve and Associated Solenoid Valve

Patent metadata

Field	Value
Publication number	US-2018010703-A1
Application number	US-201715634562-A
Country	US
Kind code	A1
Filing date	Jun 27, 2017
Priority date	Jul 11, 2016
Publication date	Jan 11, 2018
Grant date	—

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 support face for the resilient sealing ring, a first support face is formed at an edge of the non-return valve seat, a second support face is formed at an outer edge of the abutment base in the direction of the non-return valve seat, and in the event of sealing, the first support face forms with the second support face a mechanical axial stop for the movable closure element.

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 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 support face for the resilient sealing ring,
a first support face is formed at an edge of the non-return valve seat,
a second support face is formed at an outer edge of the abutment base in the direction of the non-return valve seat, and
in the event of sealing, the first support face forms with the second support face a mechanical axial stop for the movable closure element.

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.

Assignees

• Bosch Gmbh Robert

Inventors

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

Classifications

• F16K31/0655

  Lift valves · CPC title

• 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