US20020139056A1 - Fire protection system - Google Patents

Fire protection system Download PDF

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Publication number
US20020139056A1
US20020139056A1 US09/798,385 US79838501A US2002139056A1 US 20020139056 A1 US20020139056 A1 US 20020139056A1 US 79838501 A US79838501 A US 79838501A US 2002139056 A1 US2002139056 A1 US 2002139056A1
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Prior art keywords
building
protection system
radio frequency
fire protection
control circuitry
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Abandoned
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US09/798,385
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Lee Finnell
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
    • A62C3/0214—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires for buildings or installations in fire storms
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
    • A62C3/0292—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires by spraying extinguishants directly into the fire
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator

Definitions

  • This invention relates generally to fire protection systems and, more particularly, to such a system for use in protecting rural residential building located in high fire risk areas.
  • the present invention is therefore directed to a fire protection system that is inexpensive to install and maintain and that is simple yet effective in protecting a building from approaching fire.
  • the present invention employs, in accordance with the illustrated preferred embodiment, a plurality of radio frequency temperature sensors remotely located around a building to be protected, one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and/or a perimeter area surrounding the building, and control circuitry responsive to a radio frequency signal transmitted by one or more of the remotely located temperature sensors when a temperature exceeding a threshold temperature of the sensors is sensed thereby to initiate the flow of water to the one or more sprinkler heads for a predetermined period.
  • FIG. 1 is a front elevation pictorial diagram of an exterior of the fire protection system of the present invention, illustrating the spiral relationship between a building to be protected by an approaching fire, heat sensors positioned to detect the approaching fire at a distance from the building, and the sprinkler pattern required to adequetely protect the building.
  • FIG. 2 is atop plan pictorial diagram of the exterior portion of the fire protection system of FIG. 1 illustrating the areas of water coverage provided by a combination of a gun sprinkler and/or two, supplemental smaller sprinklers.
  • FIG. 3 is a top plan pictorial diagram illustrating the areas of water coverage for for multiple houses on smaller city lots.
  • FIG. 4 is a block diagram of the interior control portion of the fire protection system of the fire protection system of the present invention.
  • FIGS. 1,2 and 3 there shown pictorial diagrams of the exterior Portion of the fire protection system of the present invention that is designed to protect a building 100 from an approaching fire.
  • a plurality of heat sensors 10 is typically placed 300-500 feet from building 100 , depending on topography and foliage. Up tp 16 heat sensors 10 may be employed in the system described herein.
  • Heat sensors 10 preferable comprise commercially available radio frequency transmitter temperature sensors of the type having a treshold temperature of 135 degrees F. and that transmit a 900 MHz radio signal when the sensed temperature exceeds the threshold temperature.
  • One or more water sprinklers are preferably positioned at the highest point on the roof of building 100 to provide a water spray pattern that extends approximately 112 feet around the building 100 .
  • the sprinklers may comprise a single gun sprinkler 20 that is centrally mounted on the roof, such as the Rainbird SR103 EM sprinkler that sprinkler that dispenses 57 gallons/minute over a full circle 222 feet in diameter. This type of sprinkler facilities the wetting of foliage at the highest point possible.
  • a pair of supplimental sprinklers 22 may be positioned at each end of the roos, if desired.
  • Sprinklers may comprise, for example a pair of Rainbird 35A-TNT sprinklers, which operate with 30-60PSI water pressure and provide circular coverage extending approximately 42 feet.
  • the water lines which feed sprinklers 20 , 22 may be conventionally fabricated using copper or PVC materials. All water lines are slpoped to provide drainage after the fire protection systems is used or tested. Damage to the water lines caused by freezing in cold climates is thereby prevented.
  • FIG. 4 there is shown a water line 40 that conveys water from the existing main water line in the building to the roof-mounted sprinklers 20 , 22 of FIGS. 1 and 2.
  • the existing building water line is divided, with one branch supplying the storage tank as a fill line. It is controlled by a float in the tank which maintains a desired water level in the tank at all times.
  • a conventinal amnual valve 42 serves as a system shut off valve when it is desired to repair of drain the fire prtection system.
  • a conventional drain valve 44 is similarily conventionally employed to drain water from the fire protection system.
  • a manual bypass valve 46 is provided in a bypass water line section 48 around an electric water valve 50 to permit manual operation of the fire protection system.
  • Electric water valve may comprise a commercially available RainBird 075—DV valve, whose operation is controled by controll circuitry 52 that is mounted inside the building, preferably adjacent water line 40 .
  • Control circuitry 52 comprises a power switch 54 , a conventional 24-volt transformer 56 , a timing relay 58 , a pair of general purpose relays 60 and 62 a 12-volt AC adapter and a reciever 66 .
  • Timing relay 58 may comprise, for example, a commercially available solid relay having and adjustable time delay of 1.2 to 120 minutes.
  • Relay 60 may comprise a KP 12 V 14 general purpose relay, and relay 62 may comprise a Zetler individual relay.
  • Reciever 66 may comprise a commercially available Inevonics FA 416 R reciever.
  • one ore more of the remotely located heat sensors 10 transmits a radio frequency signal whenever a temperature exceding the threshold temperature of the sensor is sensed.
  • the transmitted signal is recieved by reciever 66 , which in turn supplies a control signal that is applied, through relay 62 , to timing relay 58 .
  • Timing relay 58 then signals relay 60 to actuate electric water valve 50 for a predetermined period of time to which timing relay 58 is set. The result is that water is permitted to flow from the building water supply line through water line 40 to the roof sprinklers 20 , 22 thereby wet the building and a perimeter area defined by the coverage of sprinklers 20 , 22 .

Abstract

A fire protection system employs a plurality of radio frequency transmitter temperature sensors remotely located around a building to be protected, one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and a perimeter area surrounding the building, and control circuitry responsive to a radio frequency signal transmited by one or more of the remotely located temperature sensors when a temperature exceeding a threshold temperature of the sensors is sensed thereby to initiate the flow of water to the one or more sprinkler heads for a predetermined period of time.
Therefore, the foregoing is considered as illustrative only of the principles of the fire protection system. Further, since many modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to falling within the scope of the invention.

Description

  • This invention relates generally to fire protection systems and, more particularly, to such a system for use in protecting rural residential building located in high fire risk areas. [0001]
  • in the western third of the United States, arid conditions create extreme fire danger during certain periods every year. Residential building have become more vulnerable in recent years due to the fact that many homes are left unattended for long periods of time because they are occupied as vacation homes or by families in which both parents work. Compounding this problem is the proliferication of homes in scenic forested or mountainous areas where the quality of life is superb, but the fire danger is high. [0002]
  • While some of these areas are served by rural fire protection districts, the response times of these entities are generally very long. Moreover, many mountain homes are simply without public fire protection of any kind. Home owners in these high risks areas face significantly higher insurance premiums than city homeowners, and some are not able to obtain fire coverage at any cost. [0003]
  • Several systems are known for protecting buildings from the risk of fire. Such systems are described in U.S. Pat. No. 4428434 to GELAUDE, U.S. Pat. No. 5165482 to SMAGAC et. al, U.S. Pat. No. 5263543 to NIGRO, U.S. Pat. No. 5692571 to JACKSON and U.S. Pat. No. 5732511 to SCOTT. [0004]
  • While these devices fulfill their objectives, they do not describe a fire protection system with a single large gun nozzle that is comparatively inexpensive to install and maintain and that is effective in protecting single rural properties and multiple homes on smaller city lots. [0005]
  • The present invention is therefore directed to a fire protection system that is inexpensive to install and maintain and that is simple yet effective in protecting a building from approaching fire. [0006]
  • The present invention employs, in accordance with the illustrated preferred embodiment, a plurality of radio frequency temperature sensors remotely located around a building to be protected, one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and/or a perimeter area surrounding the building, and control circuitry responsive to a radio frequency signal transmitted by one or more of the remotely located temperature sensors when a temperature exceeding a threshold temperature of the sensors is sensed thereby to initiate the flow of water to the one or more sprinkler heads for a predetermined period.[0007]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a front elevation pictorial diagram of an exterior of the fire protection system of the present invention, illustrating the spiral relationship between a building to be protected by an approaching fire, heat sensors positioned to detect the approaching fire at a distance from the building, and the sprinkler pattern required to adequetely protect the building. [0008]
  • FIG. 2 is atop plan pictorial diagram of the exterior portion of the fire protection system of FIG. 1 illustrating the areas of water coverage provided by a combination of a gun sprinkler and/or two, supplemental smaller sprinklers. [0009]
  • FIG. 3 is a top plan pictorial diagram illustrating the areas of water coverage for for multiple houses on smaller city lots. [0010]
  • FIG. 4 is a block diagram of the interior control portion of the fire protection system of the fire protection system of the present invention.[0011]
    • DETAILED DESCRIPTION OF THE INVENTION
  • Referring now to FIGS. 1,2 and [0012] 3 there shown pictorial diagrams of the exterior Portion of the fire protection system of the present invention that is designed to protect a building 100 from an approaching fire. A plurality of heat sensors 10 is typically placed 300-500 feet from building 100, depending on topography and foliage. Up tp 16 heat sensors 10 may be employed in the system described herein. Heat sensors 10 preferable comprise commercially available radio frequency transmitter temperature sensors of the type having a treshold temperature of 135 degrees F. and that transmit a 900 MHz radio signal when the sensed temperature exceeds the threshold temperature. One or more water sprinklers are preferably positioned at the highest point on the roof of building 100 to provide a water spray pattern that extends approximately 112 feet around the building 100. The sprinklers may comprise a single gun sprinkler 20 that is centrally mounted on the roof, such as the Rainbird SR103 EM sprinkler that sprinkler that dispenses 57 gallons/minute over a full circle 222 feet in diameter. This type of sprinkler facilities the wetting of foliage at the highest point possible. A pair of supplimental sprinklers 22 may be positioned at each end of the roos, if desired. Sprinklers may comprise, for example a pair of Rainbird 35A-TNT sprinklers, which operate with 30-60PSI water pressure and provide circular coverage extending approximately 42 feet. The water lines which feed sprinklers 20, 22 may be conventionally fabricated using copper or PVC materials. All water lines are slpoped to provide drainage after the fire protection systems is used or tested. Damage to the water lines caused by freezing in cold climates is thereby prevented.
  • Referring now to FIG. 4, there is shown a [0013] water line 40 that conveys water from the existing main water line in the building to the roof-mounted sprinklers 20, 22 of FIGS. 1 and 2. IN situations in which storage tank is needed to increase the volume of water available to the fire protection system, the existing building water line is divided, with one branch supplying the storage tank as a fill line. It is controlled by a float in the tank which maintains a desired water level in the tank at all times. A conventinal amnual valve 42 serves as a system shut off valve when it is desired to repair of drain the fire prtection system. A conventional drain valve 44 is similarily conventionally employed to drain water from the fire protection system. A manual bypass valve 46 is provided in a bypass water line section 48 around an electric water valve 50 to permit manual operation of the fire protection system. Electric water valve may comprise a commercially available RainBird 075—DV valve, whose operation is controled by controll circuitry 52 that is mounted inside the building, preferably adjacent water line 40. Control circuitry 52 comprises a power switch 54, a conventional 24-volt transformer 56, a timing relay 58, a pair of general purpose relays 60 and 62 a 12-volt AC adapter and a reciever 66. Timing relay 58 , may comprise, for example, a commercially available solid relay having and adjustable time delay of 1.2 to 120 minutes.
  • Relay [0014] 60 may comprise a KP12V14 general purpose relay, and relay 62 may comprise a Zetler individual relay. Reciever 66 may comprise a commercially available Inevonics FA416R reciever.
  • In operation, one ore more of the remotely located [0015] heat sensors 10 transmits a radio frequency signal whenever a temperature exceding the threshold temperature of the sensor is sensed. The transmitted signal is recieved by reciever 66, which in turn supplies a control signal that is applied, through relay 62, to timing relay 58. Timing relay 58 then signals relay 60 to actuate electric water valve 50 for a predetermined period of time to which timing relay 58 is set. The result is that water is permitted to flow from the building water supply line through water line 40 to the roof sprinklers 20, 22 thereby wet the building and a perimeter area defined by the coverage of sprinklers 20, 22.

Claims (8)

1. A fire protection system for preenting a building to be protected and a desired perimeter area surrounding the building in advance of an approaching fire, the system comprising.
a plurality of radio frequency transmitter temperature sensors positioned at selected locations surrounding the building, each of the temperature sensors having an associated threshold temperature and being operative for transmitting a radio frequency signal whenever an ambient temperature exceeding the threshold temperature is sensed thereby;
one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and a perimeter area surrounding the building;
an electric water alve coupled in the water supply line; and control circuitry coupled to the electric water valve, said control circuitry including radio frequency receiver means for receiving said radio frequency signal, said control circuitry being responsive to said radio frequency signal transmitted by one ore more of the plurality of temperature sensors for actuating the electric water valve to thereby permit the flow of water to the one or more sprinkler heads for a predetermined period of time.
2. A fire protecteion system as in claim 1 wherein the threshold temperature associated with each of the temperature sensors is 135 degrees F.
3. A fires protection system as in claim 1 wherein said control circuitry includes adjustable timing relay means for setting said predetermined period of time.
4. A fire protection system as in claim 1, further comprising a manually actuated system shutoff valve coupled in series with said electric water valve for enabling the user to manually shut off the fire protection system.
5. A fire protection system as in claim 4, further comprising a manually actuated drain valve coupled in series with said system shutoff valve for enabling the user to drain water from the fire protection system.
6. A fire protection system as in claim 1 further comprising a manual bypass valve coupled around said electric water valve for permitting the user to manually operate the fire protection system.
7. A fire protection system as in claim 1 wherein each of said one or more sprinklers is operative for wetting a circular area of predetermined diameter.
8. A method for prewetting a building to be protected and a desired perimeter area surrounding the building in advance of an approaching fire, the method comprising:
providing a plurality of ratio frequency transmitter temperature sensors positioned at selected locations surrounding the building, each of the temperature sensors having an associated threshold temperature and being operative for transmitting a radio frequency signal whenever an ambient temperature exceeding the threshold temperature is sensed thereby;
providing one or more sprinkler heads couple to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the bulding and a perimeter area surrounding the building;
providing an electric water supply valve coupled in the water supply line;
providing control circuitry coupled to the electric water valve, said control circuitry including radio frequency reciever means for recieving said radio frequency siganl, said control circuitry being responsive to said radio frequency signal transmitted by one or more of the plurality of temperature sensors for actuating the electric water valve to thereby permit the flow of water to the one or more sprinkler heads for a predetermined period of time.
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US20040244310A1 (en) * 2003-03-28 2004-12-09 Blumberg Marvin R. Data center
US7845425B2 (en) 2009-01-26 2010-12-07 Matt Flynn Fire sprinkler with cutoff valve, tamper-resistant features and status indicator
US20110120737A1 (en) * 2009-01-26 2011-05-26 Matt Flynn Fire Sprinkler with Ball-Type Cutoff Valve and Tamper-Resistant Features
US20110192616A1 (en) * 2010-02-10 2011-08-11 Gonzalez Benigno M Sprinkler Apparatus and Method of Placement
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US20150178850A1 (en) * 2013-12-24 2015-06-25 The Travelers Indemnity Company Insurance applications utilizing virtual engineering data
US9078749B2 (en) 2007-09-13 2015-07-14 Georg Lutter Truncated cone heart valve stent
US9480559B2 (en) 2011-08-11 2016-11-01 Tendyne Holdings, Inc. Prosthetic valves and related inventions
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US9827092B2 (en) 2011-12-16 2017-11-28 Tendyne Holdings, Inc. Tethers for prosthetic mitral valve
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US10311444B1 (en) 2017-12-02 2019-06-04 M-Fire Suppression, Inc. Method of providing class-A fire-protection to wood-framed buildings using on-site spraying of clean fire inhibiting chemical liquid on exposed interior wood surfaces of the wood-framed buildings, and mobile computing systems for uploading fire-protection certifications and status information to a central database and remote access thereof by firefighters on job site locations during fire outbreaks on construction sites
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US7690157B2 (en) * 2003-03-28 2010-04-06 Blumberg Marvin R Secure data center having redundant cooling and blast protection for protecting computer servers by the positioning of air handling units, fiber optic cable and a fire suppression system
US20100154687A1 (en) * 2003-03-28 2010-06-24 Blumberg Marvin R Data center
US8109043B2 (en) * 2003-03-28 2012-02-07 Blumberg Marvin R Secure data center having redundant cooling and blast protection for protecting computer servers by the positioning of air handling units, fiber optic cable and a fire suppressiion system
US20040244310A1 (en) * 2003-03-28 2004-12-09 Blumberg Marvin R. Data center
US9078749B2 (en) 2007-09-13 2015-07-14 Georg Lutter Truncated cone heart valve stent
US11213387B2 (en) 2007-09-13 2022-01-04 Georg Lutter Truncated cone heart valve stent
US9730792B2 (en) 2007-09-13 2017-08-15 Georg Lutter Truncated cone heart valve stent
US9254192B2 (en) 2007-09-13 2016-02-09 Georg Lutter Truncated cone heart valve stent
US9095433B2 (en) 2007-09-13 2015-08-04 Georg Lutter Truncated cone heart valve stent
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