US 12,753,845 B2Granted

Valve

AssigneeVexve A/S

InventorDavid Nadji

Life of this patent

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Abstract

A valve comprises a valve housing with a valve chamber having an internal chamber wall. A plurality of ports are opening into the valve chamber and a valve body is movable to optionally seal one ports. An endless resilient sealing member situated in a sealing member groove is sealing between the valve body and the internal chamber wall. The sealing member groove has a cross-section defining a cavity and an opening. The sealing member is situated in the cavity, the opening is more narrow than a cross-sectional dimension of the sealing member, and at least one channel is provided connecting the cavity of the sealing member groove and surroundings of the valve body.

Claims11

Dependent claims

A three-way valve, comprising:

a valve housing with a valve chamber, said valve chamber having an internal chamber wall;
three ports opening into the valve chamber;
a rotatable valve body rotatable around an axis of rotation for optionally sealing one of the three ports relative to the valve chamber;
and
an endless resilient sealing member in the form of a torus-shaped O-ring situated in a sealing member groove for sealing between the rotatable valve body and the internal chamber wall;
wherein:
the internal chamber wall comprises a cylindrical section coaxial with the axis of rotation, at least one of the three ports opening into the valve chamber through said cylindrical section of the internal chamber wall;
wherein the valve body has a sealing surface, and the sealing surface of the valve body is part of a cylindrical surface coaxial with the axis of rotation;
wherein the sealing surface of the valve body is adapted to be positioned adjacent a portion of the internal chamber wall surrounding one of the three ports when the valve body is in a rotational position to seal said one of the three ports;
whereby the sealing member groove is encircling said one of the three ports for the sealing member to seal between the sealing surface of the valve body and the internal chamber wall;
wherein the sealing member groove is located in the valve body to open into the sealing surface of the valve body;
the sealing member groove has a cross-section defining a cavity and an opening, the sealing member being situated in the cavity, the opening being more narrow than a cross-sectional dimension of the sealing member;
wherein at least one channel is provided connecting the cavity of the sealing member groove and surroundings of the valve body;
and
wherein the sealing member groove comprises a bottom wall and two opposing side walls, said bottom wall and two side walls together provide a dovetail-like cross-section of the sealing member groove, the at least one channel opening into the sealing member groove through one of the opposing side walls;
whereby through the channel fluid may enter the groove from the surroundings of the valve body to urge the sealing member towards the opening of the groove by the pressure of said surroundings.

13 more elements

Dependencies are inferred from the claim text.

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Abstract

A three-way valve, comprising:

a valve housing with a valve chamber, said valve chamber having an internal chamber wall;
three ports opening into the valve chamber;
a rotatable valve body rotatable around an axis of rotation for optionally sealing one of the three ports relative to the valve chamber;
and
an endless resilient sealing member in the form of a torus-shaped O-ring situated in a sealing member groove for sealing between the rotatable valve body and the internal chamber wall;
wherein:
the internal chamber wall comprises a cylindrical section coaxial with the axis of rotation, at least one of the three ports opening into the valve chamber through said cylindrical section of the internal chamber wall;
wherein the valve body has a sealing surface, and the sealing surface of the valve body is part of a cylindrical surface coaxial with the axis of rotation;
wherein the sealing surface of the valve body is adapted to be positioned adjacent a portion of the internal chamber wall surrounding one of the three ports when the valve body is in a rotational position to seal said one of the three ports;
whereby the sealing member groove is encircling said one of the three ports for the sealing member to seal between the sealing surface of the valve body and the internal chamber wall;
wherein the sealing member groove is located in the valve body to open into the sealing surface of the valve body;
the sealing member groove has a cross-section defining a cavity and an opening, the sealing member being situated in the cavity, the opening being more narrow than a cross-sectional dimension of the sealing member;
wherein at least one channel is provided connecting the cavity of the sealing member groove and surroundings of the valve body;
and
wherein the sealing member groove comprises a bottom wall and two opposing side walls, said bottom wall and two side walls together provide a dovetail-like cross-section of the sealing member groove, the at least one channel opening into the sealing member groove through one of the opposing side walls;
whereby through the channel fluid may enter the groove from the surroundings of the valve body to urge the sealing member towards the opening of the groove by the pressure of said surroundings.

13 more elements