US 12,560,242 B2Granted

Non-return valve for a flow channel through which a flow of air flows

AssigneeSkoberne GmbH

InventorThomas Schuck

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Abstract

A non-return valve for a flow channel has a housing and an outflow opening that can be closed by a pivoting blocking flap. The blocking flap has a dome-shaped bulge. An opening edge of the outflow opening has a hinge region for the blocking flap that transitions into a blocking flap stop region circumferentially opposite the hinge region. The blocking flap stop region is offset so that the opening edge has a progression that is curved in the circumferential direction and in the outflow direction. The housing has an indentation in the circumferential direction, which is not closed by the blocking flap such that the indentation forms a condensate chamber when the housing is inserted into the surrounding flow channel. The indentation is equipped with a flow opening, through which a condensate accumulating in the condensate chamber delimited by the indentation can flow in the interior of the housing.

A non-return valve (1) for a hollow cylindrical flow channel (14) for air, comprising

a housing (2), through which air can flow in an outflow direction, having an outflow opening (8) that can be closed by a blocking flap (3) pivotably mounted on the housing (2),
wherein the housing (2) is sleeve-shaped and comprises an inflow opening (5) opposite the outflow opening (8),
wherein the housing (2) can be arranged in the hollow cylindrical flow channel (14) with a sealing flange (10) extending in a circumferential direction around an outer wall (9) of the housing (2) such that air flowing through the flow channel (14) flows into the housing (2) in the outflow direction (6) through the inflow opening (5) and out of the housing (2) through the outflow opening (8),
wherein the blocking flap (3) rests against an opening edge (16) in a blocking position, thereby closing the outflow opening (8) and preventing undesired return flow against the outflow direction (6) into the outflow opening (8),
wherein the blocking flap (3) is pivoted away from the opening edge (16) in an opening position and releases the outflow opening (8) while air is flowing through the housing (2) in the outflow direction (6),
wherein the opening edge (16) of the outflow opening (8) comprises a hinge region (17),
wherein the blocking flap (3) is pivotably mounted on the housing (2) in the hinge region (17),
wherein the opening edge (16) transitions into a blocking flap stop region (18) arranged opposite the hinge region in the circumferential direction,
wherein the blocking flap stop region (18) is offset in the outflow direction (6) from the hinge region (17), and
wherein the housing (2) comprises an indentation (26) in form of a longitudinal recess not closed by the blocking flap (3),
wherein the indentation (26) forms a condensate chamber (27) between the housing (2) and the hollow cylindrical flow channel (14) when the housing (2) is inserted into the hollow cylindrical flow channel (14).

8 more elements

Facts

Application

18/580,903Filed 21 Jul 2022

Priority

DE 10 2021 118 897.021 Jul 2021

Published

US 2024/0376986 A114 Nov 2024

Granted

24 Feb 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

F16K 1/20
With pivoted discs or flaps: with axis of rotation arranged externally of valve member
F23J 13/00
Fittings for chimneys or flues
F16K 15/03
With guided rigid valve members: with a hinged closure member or with a pivoted closure member
F23L 11/005
Arrangements of valves or dampers after the fire: for closing the flue during interruption of burner function

Abstract

Claims15