JP2004509716A5

JP2004509716A5 -

Info

Publication number: JP2004509716A5
Application number: JP2002530214A
Authority: JP
Filing date: 2000-09-27
Publication date: 2005-04-07
Anticipated expiration: 2020-09-27

Claims

Select automatic fire extinguishing nozzle,
A body portion of the nozzle defining a fire extinguishing fluid conduit terminating in an adjustable discharge orifice;
The adjustable discharge orifice is at least partially defined by an element that automatically performs relative adjustment over the resulting range;
A selective automatic fire extinguishing nozzle with a stop connected to the nozzle body, adjustable to further limit the range of automatic relative adjustment between the elements defining the orifice within the resulting range.

A flow window is defined by an effective range of adjustment of the adjustable discharge orifice, the stop is adjustably provided in the nozzle body, and the nozzle has a variable flow rate relative to the first portion of the flow window. 2. The apparatus of claim 1, wherein the flow window is divided to flow at a substantially constant pressure and to flow at a variable pressure and a relatively constant flow rate relative to the second portion of the flow window.

15. An apparatus according to claim 1 or 14, wherein the stop limits forward movement of the floating baffle.

Select automatic fire extinguishing nozzle,
A body portion of the nozzle defining a fire extinguishing fluid conduit terminating in an adjustable discharge orifice;
The adjustable discharge orifice can be automatically adjusted within the resulting range;
A selective automatic fire-extinguishing nozzle with adjustable means for further limiting the range of automatic adjustment of the orifice within the resulting range.

The apparatus according to claim 1, 4, 14 or 16, wherein the nozzle is a self-exhaust foam spray nozzle.

17. An apparatus according to claim 1, 4, 14, or 16, wherein the nozzle is a self-measuring self-exhaust foam spray nozzle.

A method of operating an automatic fire extinguishing nozzle having an automatically changing discharge orifice, the nozzle receiving a changing supply pressure,
Targeting a flow rate less than the maximum possible flow rate of the nozzle operating at a standard supply pressure, the maximum possible flow rate corresponding to a maximum opening of the discharge orifice provided by a nozzle structure;
Substantially maintaining a selected fire fighting fluid discharge pressure for the fire fighting fluid flowing through the nozzle for a fluid flow rate up to about the target flow rate;
Upon reaching the target flow rate, the method includes increasing fluid discharge pressure above the selected discharge pressure while maintaining (approximately) fluid flow rate.

18. A method according to claim 7 or 17, comprising raising the pressure by limiting the adjustment of the automatically adjustable discharge orifice within the effective range of adjustment of the orifice.

9. The method of claim 8, comprising venting the foam concentrate to the nozzle.

The method of claim 9, comprising adjustably metering foam concentrate relative to the nozzle as the discharge orifice is adjusted.

Select automatic fire extinguishing nozzle,
A body portion of the nozzle defining a fire extinguishing fluid conduit terminating in an adjustable discharge orifice;
The adjustable discharge orifice is at least partially defined by an element that automatically performs relative adjustment over the resulting range;
A stop connected to the nozzle body, adjustable to further limit the range of automatic relative adjustment between the elements defining the orifice within the resulting range;
A flow window is defined by the effective range of adjustment of the adjustable discharge orifice, the stop is adjustably provided in the nozzle body, and the nozzle is in a first relatively low flow portion of the flow window. A selective automatic fire extinguishing nozzle that divides the flow window to flow at a variable flow rate and a substantially constant pressure, and to flow at a variable pressure and a relatively constant flow rate relative to a second relatively high flow rate portion of the flow window.

Select automatic fire extinguishing nozzle,
A body portion of the nozzle defining a fire extinguishing fluid conduit terminating in an adjustable discharge orifice;
The adjustable discharge orifice is at least partially defined by an element that automatically performs relative adjustment over the resulting range;
A stop connected to the nozzle body, adjustable to further limit the range of automatic relative adjustment between the elements defining the orifice within the resulting range;
The stop is a selected automatic fire-extinguishing nozzle that limits the forward movement of the floating baffle.

A method of operating an automatic fire-extinguishing nozzle that receives a varying supply pressure,
Substantially maintaining the selected extinguishing fluid discharge pressure for the extinguishing fluid flowing through the nozzle for fluid flow up to a target flow rate;
When the target flow rate is reached, the fluid discharge pressure is increased above the selected discharge pressure while maintaining (almost) fluid flow, and an automatically adjustable discharge orifice adjustment is obtained for the orifice. Increasing the pressure by limiting within an adjustment range.

Select automatic fire extinguishing nozzle,
A nozzle body defining a fire extinguishing fluid conduit terminating at a variable discharge orifice, the orifice changing between a minimum opening and a maximum opening at least partially in response to a change in the fire extinguishing fluid pressure;
Selective automatic fire-extinguishing nozzle with an at least partially adjustable nozzle element that provides a variable selection range for the maximum orifice opening.

The maximum of the selected variable range for the maximum orifice opening defines a flow window, and the nozzle element is adjustably provided in the nozzle body and includes a stop defining a maximum orifice opening, the nozzle being the first of the flow window. The flow window is divided so that a flow rate is variable and a substantially constant pressure is applied to one portion, and a variable flow rate and a relatively constant flow is applied to a second portion of the flow window. The apparatus according to 1.

Select automatic fire extinguishing nozzle,
A nozzle body defining a fire extinguishing fluid conduit terminating at a variable discharge orifice, said orifice automatically changing between a minimum opening and a maximum opening in response to a change in the fire extinguishing fluid pressure at least partially;
A selection automatic fire extinguishing nozzle comprising a selection variable means for changing a range of automatic adjustment of the orifice.

A method of operating an automatic fire-extinguishing nozzle that receives a varying supply pressure,
Targeting a flow rate below the maximum possible flow rate for the nozzle when operating at standard supply pressures;
Maintaining a substantially constant extinguishing fluid discharge pressure for the extinguishing fluid flow rate substantially below and up to the target flow rate;
Increasing the fluid discharge pressure beyond the constant discharge pressure at or above the target flow rate for a fire extinguishing fluid flow rate, thereby maintaining the fluid flow rate substantially constant.

18. The method of claim 17, comprising raising the pressure by selectively changing the range of the self-adjustable discharge orifice.

19. A method according to claim 17 or 18, comprising venting a foam concentrate to the nozzle.

The method of claim 9, comprising: adjustably metering foam concentrate into the nozzle when the discharge orifice is adjusted.

Select automatic fire extinguishing nozzle,
A nozzle body defining a fire extinguishing fluid conduit terminating in a variable discharge orifice, wherein the adjustable orifice automatically changes between a minimum and a maximum at least partially in response to a change in the fire extinguishing fluid pressure;
Comprising a nozzle element adjustable to selectively change the range of automatic adjustment of the discharge orifice;
The flow window is defined by the maximum range of adjustment of the discharge orifice, and at least one nozzle element causes the nozzle to flow at a variable flow rate and a substantially constant pressure for lower flow rates and for higher flow rates. A selective automatic fire-extinguishing nozzle that can be adjustably arranged in the nozzle body so as to divide the flow window to flow at a variable pressure and a relatively constant flow rate.

Select automatic fire extinguishing nozzle,
A nozzle body defining a fire extinguishing fluid conduit terminating at a variable discharge orifice;
The discharge orifice automatically changes at least partially in response to the fire-extinguishing fluid pressure over a range of openings defined by the nozzle element;
The range is a selected automatic fire-extinguishing nozzle having the largest selection variable position.

The nozzle of claim 12, wherein at least one nozzle element limits forward movement of the floating baffle.

A method of operating an automatic fire-extinguishing nozzle that receives a varying supply pressure,
Selecting a target flow rate for the nozzle, the target being less than the maximum flow rate of the nozzle, wherein the maximum is defined, at least in part, by a maximum selection variable opening of the discharge orifice of the nozzle;
Maintaining (almost) selected extinguishing fluid discharge pressure for the extinguishing fluid flowing through the nozzle for fluid flow rates below and up to the target flow rate;
Increasing the fluid discharge pressure above the selected discharge pressure while maintaining (almost) constant fluid flow when the target flow is reached and exceeded,
The method includes increasing the pressure by limiting the adjustment of the discharge orifice that is automatically adjustable within a selected variable range of adjustment of the orifice.

Select automatic fire extinguishing nozzle,
A nozzle body defining a fire extinguishing fluid conduit terminating at the discharge orifice;
The discharge orifice is defined by an element that is at least partially relatively self-adjusting over a range;
A selective automatic fire extinguishing nozzle with a stop connected to the nozzle body, selectively adjustable to limit the range of automatic relative adjustment between the elements defining the orifice.

A flow window is defined by the adjustable discharge orifice, and the stop causes the nozzle to flow at a variable flow rate and a substantially constant pressure relative to the first portion of the flow window, wherein the second of the flow window. The apparatus of claim 14, wherein the flow window can be selectively adjusted and disposed on the nozzle body so as to divide the flow window so as to flow at a variable pressure and a relatively constant flow.

A selective automatic fire-extinguishing nozzle comprising a nozzle body defining a fire-extinguishing fluid conduit terminating at the discharge orifice;
The discharge orifice is automatically adjustable within a range;
A selective automatic fire extinguishing nozzle with selectively adjustable means for limiting the range of automatic adjustment of the orifice.