CA1161805A - Automatic and manual chimney fire extinguisher - Google Patents
Automatic and manual chimney fire extinguisherInfo
- Publication number
- CA1161805A CA1161805A CA000410515A CA410515A CA1161805A CA 1161805 A CA1161805 A CA 1161805A CA 000410515 A CA000410515 A CA 000410515A CA 410515 A CA410515 A CA 410515A CA 1161805 A CA1161805 A CA 1161805A
- Authority
- CA
- Canada
- Prior art keywords
- chimney
- housing
- fire extinguisher
- manual
- fusible link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
-
- 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
- A62C3/04—Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The disclosure is of a method or system for controlling fires originating in the chimney or chimney connector of internal combusion space heating appliances. The method or system provides for detecting excessive heat, the presence of which automatically releases a flow of extinguishant into the chimney or chimney connector, thereby rapidly eliminating flame in the chimney or chimney connector, as well as providing a fire retardant coating to any combustible materials present there. The advantages of the method or system of the invention resides in it's ability to effectively control chimney fires, it's simplicity of operation, and it's reliability of operation, and it's ease of installation.
The disclosure is of a method or system for controlling fires originating in the chimney or chimney connector of internal combusion space heating appliances. The method or system provides for detecting excessive heat, the presence of which automatically releases a flow of extinguishant into the chimney or chimney connector, thereby rapidly eliminating flame in the chimney or chimney connector, as well as providing a fire retardant coating to any combustible materials present there. The advantages of the method or system of the invention resides in it's ability to effectively control chimney fires, it's simplicity of operation, and it's reliability of operation, and it's ease of installation.
Description
~CKGROUND OF THE INVENTION
1) Field of the Invention This invention relates to a method or system for controlling chimney fires, in particular, chimney fires that commonly occur in the chimneys of solid fuel heating appliances.
~) Brief Description of the Prior_Art A search of patents issued to date has failed to produce record of any inventions specifically related to the invention herein described, Other automatic fire extinguishing devices have been invented and built. However, typical devices of this type will not provide protection from dangerous chimney fires associated with solid fuel heating appliances.
The prior methods of controlling chimney fires included such practices as throwing water into the heating appliance, or discharging extinguishant into the heating appliance. Both of these methods have serious drawbacks.
Firstly~ these methods cannot be employed without opening the fuel feed door or doors on the appliance concerned~ This produces a serious disadvantage in controlling a chimney fire by permitting almost unlimited combustion air into the appliance and the chimney system.
Second, there is danger to the person engaging in either of these methods, as flame, sparks, or extreme heat might be released from the appliance when the fuel feed door or doors are opened, Thirdly, ~ater thro~m into a heater might warp the appliance by causing uneven coolin~.
O~
Finally9 such methods are not automatic. They can occur only w])en there is someone present, who is aware that a chimney fire is in progress. The occurance of a t~himney fire is not always evident to an observer near the appliance~ expecially if the observer is not aware of the symptoms associated with a chimney fire.
SU~ARY OF THE INVENTION
The fire extinguishing system of my invention is adapted to provide for easy installations in most common chimney connector sections, and provides a high degree of reliability of oparation~ Such operation can occur automatically, or manually, through a simple action taken by an operator, Another ob~ect of the present invention is to provide such apparatus which requires a minimum amount of hardware ~hich is easily arranged and instAlled.
Upon an understanding of the embodiment described hereunder, further ob~ects of the invention will become obvious~ and advantages not herein described will occur to those skilLed in the art upon employment of the invention.
BRIEF DESCRIPTION OF THE DRAI~INGS
_ Figure 1 is an isometric vie~ of the invention.
Figure 2 is a view of the back of a portion of the housing and trigger mechanism of the inYention.
Figure 3 is a cross sectional vie~ of the housing and trigger mechanism o~ the invention.
Figure 4 is an enlar~ed detail of a side vie~ of the heat-sensing and discharge mechanism oE the invention~
,2~ ~
o~
DET~ILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVE~TION
__ _ _ The invention comprises a metal housing 1, housing a common rechargable pressurized fire extinguisher 2. Threaded shaft 39 is scre~ed into nut 6, Nut 6 is attached, commonly by ~?elding, to pivoting piece 11. Pivoting piece 11, is secured loosely to cross member 10, by rivet 25. ~ spring 4, is tensioned bet~7eeen pivoting piece 11, and a hold in housing 1.
A release cable 8, is inside a flexible tubing 7. Release pin 5, is loosely fitted in hole in nut 6. Release cable 8, i5 bent into a loop at one end to encirle release pin 5, and bent at the other end to hook into hole in fusible link 16. FIexible discharge tube 9, is fitted at one end to pressurized fire extinguisher 2, and at the other end is fitted to a flue discharge nozel 29, ~7hich discharges into the heating appliance chimney connector 24, ~7hich is not part of the invention, Threaded alignment and ad~ustment screws 18 and 19, are scre~7ed through threaded holes in mounting bracked 17. A
tension device is formed by scre~7ing threaded shaft 20, through nut 21, and threaded shaft 20 is attached to fusible link 16f Flexible tubing 7, is butted tightly at it's ends to mounting bracket 17~ and support bracket 15. Holding strap 12, encircles pressuriæed extinguisher 2, and is secured to metal housing 1, by screws 13 and 14, Screws 22 and 23 permit mounting bracket 17 to be secured to chimney connector 24, Holes 27 and 28, as well as other similar holes permit housing 1, to be scre~ed to a ~all behind the heating appliance.
In operation, should a chimney fire occur in connector 24, the intense heat generated therein will radiate through the walls of said chimney connector, heatin~ fusible link 16. Fusible lin~ 16 is under tension from force transferred through release cable 8, such force being generated by spring 4. I~hen fusible link 169 has heated sufficiently, it will separate, releasing holding force on release cable 8. As release cable 8 is no longer restraining pivoting piece 11, it is free to swing in a movement towards it's source of tension, spring 4. As nut 6, and threaded shaft 3 are attached to pivoting piece 11, they are both also pulled with pivoting piece 11. This causes head of threaded shaft to press against pressurized release button 26, which releases pressuriæed extinguishant into flexible discharge tube, where it is then carried to flue discharge nozel 29~ and then released into chimney connector 24.
~ heat sensitive device differing from the fusible link 16, may be used instead of s~id Pusible link. Such devices may have various operating temperatures and chara&teristics, Those skilled in the art will recognize that various modifications may be made to this invention, without departing from the scope or spirit of the invention. For instance, provision ma~ be made so that the end of the flue discharge noæel 29 may be readily cleaned, and that more that one fusible link or other heat sensitive device may be used in tandem. Cable 8, and flexible tubing 7, and flexible discharge tube 9 may be o considerable length, to permit mounting houslng 1, and contentslat a sufficient distance from the heating appliance to preclude the excesslve heating of the pressurized fire extinguisher,
1) Field of the Invention This invention relates to a method or system for controlling chimney fires, in particular, chimney fires that commonly occur in the chimneys of solid fuel heating appliances.
~) Brief Description of the Prior_Art A search of patents issued to date has failed to produce record of any inventions specifically related to the invention herein described, Other automatic fire extinguishing devices have been invented and built. However, typical devices of this type will not provide protection from dangerous chimney fires associated with solid fuel heating appliances.
The prior methods of controlling chimney fires included such practices as throwing water into the heating appliance, or discharging extinguishant into the heating appliance. Both of these methods have serious drawbacks.
Firstly~ these methods cannot be employed without opening the fuel feed door or doors on the appliance concerned~ This produces a serious disadvantage in controlling a chimney fire by permitting almost unlimited combustion air into the appliance and the chimney system.
Second, there is danger to the person engaging in either of these methods, as flame, sparks, or extreme heat might be released from the appliance when the fuel feed door or doors are opened, Thirdly, ~ater thro~m into a heater might warp the appliance by causing uneven coolin~.
O~
Finally9 such methods are not automatic. They can occur only w])en there is someone present, who is aware that a chimney fire is in progress. The occurance of a t~himney fire is not always evident to an observer near the appliance~ expecially if the observer is not aware of the symptoms associated with a chimney fire.
SU~ARY OF THE INVENTION
The fire extinguishing system of my invention is adapted to provide for easy installations in most common chimney connector sections, and provides a high degree of reliability of oparation~ Such operation can occur automatically, or manually, through a simple action taken by an operator, Another ob~ect of the present invention is to provide such apparatus which requires a minimum amount of hardware ~hich is easily arranged and instAlled.
Upon an understanding of the embodiment described hereunder, further ob~ects of the invention will become obvious~ and advantages not herein described will occur to those skilLed in the art upon employment of the invention.
BRIEF DESCRIPTION OF THE DRAI~INGS
_ Figure 1 is an isometric vie~ of the invention.
Figure 2 is a view of the back of a portion of the housing and trigger mechanism of the inYention.
Figure 3 is a cross sectional vie~ of the housing and trigger mechanism o~ the invention.
Figure 4 is an enlar~ed detail of a side vie~ of the heat-sensing and discharge mechanism oE the invention~
,2~ ~
o~
DET~ILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVE~TION
__ _ _ The invention comprises a metal housing 1, housing a common rechargable pressurized fire extinguisher 2. Threaded shaft 39 is scre~ed into nut 6, Nut 6 is attached, commonly by ~?elding, to pivoting piece 11. Pivoting piece 11, is secured loosely to cross member 10, by rivet 25. ~ spring 4, is tensioned bet~7eeen pivoting piece 11, and a hold in housing 1.
A release cable 8, is inside a flexible tubing 7. Release pin 5, is loosely fitted in hole in nut 6. Release cable 8, i5 bent into a loop at one end to encirle release pin 5, and bent at the other end to hook into hole in fusible link 16. FIexible discharge tube 9, is fitted at one end to pressurized fire extinguisher 2, and at the other end is fitted to a flue discharge nozel 29, ~7hich discharges into the heating appliance chimney connector 24, ~7hich is not part of the invention, Threaded alignment and ad~ustment screws 18 and 19, are scre~7ed through threaded holes in mounting bracked 17. A
tension device is formed by scre~7ing threaded shaft 20, through nut 21, and threaded shaft 20 is attached to fusible link 16f Flexible tubing 7, is butted tightly at it's ends to mounting bracket 17~ and support bracket 15. Holding strap 12, encircles pressuriæed extinguisher 2, and is secured to metal housing 1, by screws 13 and 14, Screws 22 and 23 permit mounting bracket 17 to be secured to chimney connector 24, Holes 27 and 28, as well as other similar holes permit housing 1, to be scre~ed to a ~all behind the heating appliance.
In operation, should a chimney fire occur in connector 24, the intense heat generated therein will radiate through the walls of said chimney connector, heatin~ fusible link 16. Fusible lin~ 16 is under tension from force transferred through release cable 8, such force being generated by spring 4. I~hen fusible link 169 has heated sufficiently, it will separate, releasing holding force on release cable 8. As release cable 8 is no longer restraining pivoting piece 11, it is free to swing in a movement towards it's source of tension, spring 4. As nut 6, and threaded shaft 3 are attached to pivoting piece 11, they are both also pulled with pivoting piece 11. This causes head of threaded shaft to press against pressurized release button 26, which releases pressuriæed extinguishant into flexible discharge tube, where it is then carried to flue discharge nozel 29~ and then released into chimney connector 24.
~ heat sensitive device differing from the fusible link 16, may be used instead of s~id Pusible link. Such devices may have various operating temperatures and chara&teristics, Those skilled in the art will recognize that various modifications may be made to this invention, without departing from the scope or spirit of the invention. For instance, provision ma~ be made so that the end of the flue discharge noæel 29 may be readily cleaned, and that more that one fusible link or other heat sensitive device may be used in tandem. Cable 8, and flexible tubing 7, and flexible discharge tube 9 may be o considerable length, to permit mounting houslng 1, and contentslat a sufficient distance from the heating appliance to preclude the excesslve heating of the pressurized fire extinguisher,
Claims
WHAT IS CLAIMED IS:
An automatic or manual flue fire extinguisher comprised of a housing containing a bracket installed for the purpose of securing a common pressurized fire extinguisher to said housing, and an adjustable spring actuated trigger mechanism with a manual release pin, which is connected to a release cable which is further connected to a fusible link located in a mounting bracket which has provision for attachment to a chimney connector pipe; said mounting bracket containg a tension device provided to cooperate with the fusible link for the purpose of restraining the release cable and spring actuated trigger mechanism located in the above described housing, a set of alignment and adjustment screws, provided to cooperate with the holes in the mounting bracket for the purpose of aligning and adjusting the fusible link, and a flue discharge nozel, provided to deliver extinguishant into a chimney connector pipe, said flue discharge nozel being connected to a flexible tubing which is provided to deliver extinguishant from a common pressurized extinguisher contained in the housing, to the flue discharge nozel.
An automatic or manual flue fire extinguisher comprised of a housing containing a bracket installed for the purpose of securing a common pressurized fire extinguisher to said housing, and an adjustable spring actuated trigger mechanism with a manual release pin, which is connected to a release cable which is further connected to a fusible link located in a mounting bracket which has provision for attachment to a chimney connector pipe; said mounting bracket containg a tension device provided to cooperate with the fusible link for the purpose of restraining the release cable and spring actuated trigger mechanism located in the above described housing, a set of alignment and adjustment screws, provided to cooperate with the holes in the mounting bracket for the purpose of aligning and adjusting the fusible link, and a flue discharge nozel, provided to deliver extinguishant into a chimney connector pipe, said flue discharge nozel being connected to a flexible tubing which is provided to deliver extinguishant from a common pressurized extinguisher contained in the housing, to the flue discharge nozel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000410515A CA1161805A (en) | 1982-08-31 | 1982-08-31 | Automatic and manual chimney fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000410515A CA1161805A (en) | 1982-08-31 | 1982-08-31 | Automatic and manual chimney fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1161805A true CA1161805A (en) | 1984-02-07 |
Family
ID=4123506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000410515A Expired CA1161805A (en) | 1982-08-31 | 1982-08-31 | Automatic and manual chimney fire extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1161805A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664197A (en) * | 1986-01-14 | 1987-05-12 | Chimney Guard Ltd. | Fire extinguishing system |
| US4872513A (en) * | 1986-02-19 | 1989-10-10 | Wilfred J. Finnigan | Chimney fire extinguisher |
| US4997046A (en) * | 1989-09-20 | 1991-03-05 | Evans Iii Harry A | Flue fire extinguisher |
-
1982
- 1982-08-31 CA CA000410515A patent/CA1161805A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664197A (en) * | 1986-01-14 | 1987-05-12 | Chimney Guard Ltd. | Fire extinguishing system |
| US4872513A (en) * | 1986-02-19 | 1989-10-10 | Wilfred J. Finnigan | Chimney fire extinguisher |
| US4997046A (en) * | 1989-09-20 | 1991-03-05 | Evans Iii Harry A | Flue fire extinguisher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |