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US 2021/0260419 A1Published application
Dry drop for a fire extinction vacuum network
AssigneeExec
InventorMaurice Kadoche
Life of this patent
Estimating the term…
Abstract
A dry drop to be mounted in a fire protection installation of the type having a network of vacuum sprinklers. The dry drop includes a tubular body, a shutter and a one-way valve. The tubular body defines an inner chamber and has: a first end; a second end; and an orifice located between the first end and the second end. The shutter is movable between: a shutoff position in which it shuts off the first nozzle; and a passage position in which it is cleared from the first nozzle. The one-way valve is intended to be mounted in the orifice to enable the pressurization of the inner chamber by injection of a gas into the inner chamber, the inner pressure holding the shutter in its shutoff position.
Claims9
A dry drop configured to be mounted in a fire protection vacuum installation, the dry drop comprising:
- a sprinkler;
- a tubular body defining an inner chamber, and having:
- a first end having:
- a first connector for connection to a piping of the fire protection installation,
- a first nozzle adapted to ensure a link between the dry drop and the piping;
- a second end having:
- a second nozzle adapted to ensure a link between the dry drop and the sprinkler and having:
- a fastening connector, allowing linking the sprinkler to a second connector and having a complementary nozzle;
- a fuse;
- a cap for shutting off the complementary nozzle, held in the shutoff position by the fuse;
- the second connector to the sprinkler;
- an orifice located between the first end and the second end;
- a shutter movable between:
- a shutoff position in which the shutter shuts off the first nozzle;
- a passage position in which the shutter is cleared from the first nozzle;
- a biasing element which biases the shutter in the passage position and is interposed between the tubular body and the shutter;
- and
- a one-way valve to be mounted in the orifice, and
- the inner chamber configured to comprise a pressurized gas, the shutter being configured to be held in the shutoff position by pressurized gas and the sprinkler.
16 more elements
A method comprising:
- mounting a dry drop on a fire extinction vacuum network, wherein the dry drop comprises:
- a tubular body defining an inner chamber and having:
- a first end having:
- a first connector for connection to a piping of the fire protection installation,
- a first nozzle adapted to ensure a link between the dry drop and the piping;
- a second end having:
- a second nozzle adapted to ensure a link between the dry drop and a sprinkler and having:
- a fastening connector, allowing linking the sprinkler to a second connector and having a complementary nozzle;
- a fuse;
- a cap for shutting off the complementary nozzle, held in the shutoff position by the fuse;
- the second connector;
- an orifice located between the first end and the second end;
- a shutter movable between:
- a shutoff position in which the shutter shuts off the first nozzle;
- a passage position in which the shutter is cleared from the first nozzle;
- a biasing element which biases the shutter in the passage position and is interposed between the tubular body and the shutter;
- and
- a one-way valve to be mounted in the orifice, and
- the inner chamber configured to comprise a pressurized gas, the shutter being configured to be held in the shutoff position by pressurized gas and the sprinkler;
- wherein the mounting comprises:
- mounting the sprinkler at the second end the tubular body so that the second nozzle is shut off by the shutoff cap;
- positioning the shutter the shutoff position using a tool and/or by gravity;
- injecting the gas into the inner chamber by the one-way valve to pressurize the inner chamber and hold the shutter in the shutoff position;
- mounting the dry drop on a pipe of the fire extinction vacuum network.
21 more elements
A fire protection installation, comprising:
- a piping;
- at least one dry drop connected to the piping, wherein the dry drop comprises:
- a tubular body defining an inner chamber and having:
- a first end having:
- a first connector for connection to a piping of the fire protection installation,
- a first nozzle adapted to ensure a link between the dry drop and the piping;
- a second end having:
- a second nozzle adapted to ensure a link between the dry drop and at least one vacuum sprinkler and having:
- a fastening connector, allowing linking the at least one vacuum sprinkler to a second connector and having a complementary nozzle;
- a fuse;
- a cap for shutting off the complementary nozzle, held in the shutoff position by the fuse;
- the second connector;
- an orifice located between the first end and the second end;
- a shutter movable between:
- a shutoff position in which the shutter shuts off the first nozzle;
- a passage position in which the shutter is cleared from the first nozzle;
- a biasing element which biases the shutter in the passage position and is interposed between the tubular body and the shutter;
- and
- a one-way valve to be mounted in the orifice, and
- the inner chamber configured to comprise a pressurized gas, the shutter being held in the shutoff position by pressurized gas and the at least one vacuum sprinkler;
- and
- the at least one vacuum sprinkler mounted on the second end of the dry drop.
19 more elements
Dependencies are inferred from the claim text.