US 11,953,099 B2
Valve arrangement and switching valve for regulating a mass flow
Eike Willers, Stuttgart (DE); Andreas Auweder, Vaihingen (DE); and Markus Lang-Belz, Fellbach (DE)
Assigned to OTTO EGELHOF GmbH & Co. KG, Fellbach (DE)
Filed by OTTO EGELHOF GmbH & Co. KG, Fellbach (DE)
Filed on Sep. 29, 2021, as Appl. No. 17/488,475.
Application 17/488,475 is a continuation in part of application No. 17/180,066, filed on Feb. 19, 2021, granted, now 11,608,901.
Claims priority of application No. 102020108762.4 (DE), filed on Mar. 30, 2020; and application No. 102021107997.7 (DE), filed on Mar. 30, 2021.
Prior Publication US 2022/0018450 A1, Jan. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 1/44 (2006.01); F16K 1/36 (2006.01); F16K 31/40 (2006.01)
CPC F16K 1/443 (2013.01) [F16K 1/36 (2013.01); F16K 31/408 (2013.01)] 18 Claims
OG exemplary drawing
 
1. Valve arrangement for a switching valve for regulating a mass flow in a refrigerating circuit or a heating circuit, comprising a valve housing, which comprises a feed opening and a discharge opening, comprising a valve piston, which comprises a valve-closing member, which buts against a valve seat of a through-hole between the feed opening and the discharge opening in a closed position and closes the through-hole, wherein
the valve seat comprises a stop surface and a sealing surface which are oriented so as to be adjacent to one another,
the valve-closing member comprises a supporting surface and a gasket surface which are oriented so as to be adjacent to one another,
an elastic sealing element is provided on the valve seat or the valve-closing member, on which sealing element the sealing surface or gasket surface is formed,
a sealing projection is provided on the sealing surface or the gasket surface and is oriented towards the opposite gasket surface or sealing surface,
the supporting surface of the valve-closing member and the stop surface of the valve seat but against one another in the closed position and form a travel limitation between the valve-closing member and the valve seat, and the sealing projection is at least partially pressed into the sealing element,
the valve piston comprises a sealing sleeve and a valve body, which is at least partially surrounded by the sealing sleeve and the sealing element is housed between the sealing sleeve and the valve body,
the sealing element has a radially outwardly facing annular bead that does not extend completely along the height of the sealing element so that a free space is formed between the sealing element and the surrounding sealing sleeve in a receiving space, and
a beading is provided on the sealing sleeve for fixing the sealing element and the valve body in the sealing sleeve.