CN2354593Y

CN2354593Y - Automatic extinguisher for kitchen

Info

Publication number: CN2354593Y
Application number: CN 99200720
Authority: CN
Inventors: 李涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-22
Filing date: 1999-01-22
Publication date: 1999-12-22
Anticipated expiration: 2009-01-22

Abstract

The utility model discloses an automatic extinguisher for hearths, which comprises a fire extinguishment bottle filled with aqueous film-forming foam extinguishing agent, a bottle head valve which is opened by an electric burst cylinder, a plurality of sprinkling heads in a smoke discharging hood installed at the upper part of the hearth, and a temperature sensitive switch. The sprinkling heads are connected with the bottle head valve on the fire extinguishment bottle by conduct pipes. The utility model also comprises a control circuit supplying 350-500 MA instantaneous current; the control circuit is triggered by the temperature sensitive switch to detonate an electric fuse. The fire extinguisher can be used for automatic fire extinguishment under high temperature and high humid environments, such as kitchens and dining rooms.

Description

Kitchen range top automatic fire extinguisher

The utility model relates to a kind of small-sized automatic fire extinguisher, refers in particular to a kind of kitchen range top automatic fire extinguisher.The automatic fire extinguisher that uses at present all is pipe network to be arranged or do not have the pipe network automatic fire extinguisher as the large-scale of Architectural Equipment design and installation, and unspecial in the small-sized automatic fire extinguisher under high temperature such as kitchen, the kitchen range top, the high humid and warm environment.

The purpose of this utility model is for plugging a gap, a kind of automatic fire extinguisher that is suitable for the pollution-free easy cleaning of kitchen range top fire extinguishing use being provided.

For achieving the above object, kitchen range top automatic fire extinguisher of the present utility model, comprise a fire-suppression bottle that extinguishing chemical is housed and stores, also comprise many sprinkler head, at least one temperature sensitive switch K that are installed in above the kitchen range top that are installed in kitchen range top top and link to each other with bottle valve on the fire-suppression bottle by conduit by a bottle valve sealing with valve body and sealing tappet ₁With a control circuit that 350～500MA transient current can be provided, be equipped with one and drive the electric detonation cylinder that bottle valve is opened on described bottle valve, described electric detonation cylinder comprises that its lower end is installed in the cylinder body of the valve body upper end of bottle valve, has retaining and collude electrode and the electric detonator R that the piston of groove, pressured mother are fixed on the cylinder body upper end ₅, the upper end of valve body is equipped with two relatively and is positioned at the retaining that cylinder body matches with retaining groove shape on the piston and colludes, and the output of described control circuit is connected with electrode, and described extinguishing chemical is an AFFF AFFF extinguishing chemical.

As further improvement of the utility model, wherein said sprinkler head is to be made of a nozzle and a screen pack that has the sprinkler head main body of circle hole shape passage, is installed in the passage two ends respectively, in the passage of sprinkler head main body, be provided with a plug near the nozzle inboard, have two along the through hole of channel axis to symmetry near the vias inner walls place on the plug, it is that 60 conical bores of spending are that the 60 taper elongated slots of spending cut formed hole mutually with a tapering that is positioned at the nozzle outside by the tapering that is positioned at the nozzle inboard that described nozzle has one.

As another further improvement of the present utility model, wherein said temperature sensitive switch K ₁Comprise travel switch that is installed in the temperature-sensitive seat and the fusible alloy temperature-sensitive seat that is by fusing point be the cover top of concealing shade that welding connects and concealing shade inboard be to compress with the contact of travel switch contact, make travel switch be in off-state.

Further improve as of the present utility model, wherein said control circuit comprises that has a normally-closed contact J again ₁With normally opened contact J ₂Relay J, two capacitor C ₂, C ₃With a protective resistance R ₃, by capacitor C ₂With C ₃After the parallel connection again with protective resistance R ₃The circuit that series connection constitutes is by the normally-closed contact J of relay J ₁With relay J and described temperature sensitive switch K ₁Receive again on the 6V dc source after the circuit parallel connection that series connection constitutes, and pass through the normally opened contact J of relay J ₂With described electric detonator R ₅Electrode be in series.

In the utility model, owing to adopted by the temperature sensitive switch K that is installed in kitchen range top top ₁Trigger control circuit is ignited electric detonator R ₅Bottle valve is opened automatically,, thereby reached the purpose of self-extinguishing again because the effect that retaining colludes makes bottle valve once open and will keep the state of unlatching always.Simultaneously because what adopt is aqueous film-forming foam extinguishing agent, not only environmental pollution is little but also be easy to clean after the fire extinguishing.

Below in conjunction with accompanying drawing kitchen range top automatic fire extinguisher of the present utility model is described in further detail.

Fig. 1 is the scheme of installation of the utility model kitchen range top automatic fire extinguisher.

Fig. 2 is the structure chart of the fire-suppression bottle in the utility model kitchen range top automatic fire extinguisher when being in opening.

Fig. 3 is the structure chart of the sprinkler head that adopted in the utility model kitchen range top automatic fire extinguisher.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the structure chart of the temperature sensitive switch K1 that adopted in the utility model kitchen range top automatic fire extinguisher.

Fig. 6 is the circuit diagram of the control circuit that adopted in the utility model kitchen range top automatic fire extinguisher.

As shown in Figure 1, uniform respectively arranging is equipped with ten sprinkler heads 6 and three temperature sensitive switch K in the enclosure above the protected kitchen range top ₁(seeing the mark among Fig. 5) 7 links to each other with a control circuit after these three temperature sensitive switch parallel connections, and sprinkler head 6 links to each other with fire-suppression bottle 4 by conduit 5.Aqueous film-forming foam extinguishing agent (AFFF) and power gas are housed in the fire-suppression bottle 4, preserve with bottle valve 3 sealings.In the lower end of bottle valve 3, sealing tappet 2, Packing spring, siphon pipe assembly are arranged as shown in Figure 2.On the valve body 1 of bottle valve 3, the Pressure gauge of demonstration fire-suppression bottle 4 internal work pressure and the piston retaining of two positioned opposite are housed collude 14.The upper end of bottle valve 3 is connected by the lower end of screw thread with electric detonation cylinder 8 cylinder bodies 9.Be equipped with respectively in the cylinder body 9 of electric detonation cylinder 8 and press mother 11, electrode 12, electric detonator R ₅13 and have with retaining and collude the piston 10 that 14 retainings that are meshed collude groove.Electrode 12 links to each other with control circuit.Control circuit and fire-suppression bottle 4 are installed in one and hang in the case, and this hangs case and can be installed in the kitchen, also can be installed in the position of the close kitchen range top outside the kitchen.

As shown in Figure 3, sprinkler head 6 is combined by sprinkler head main body 16, nozzle 17 and screen pack 18, it is in conjunction with the design of the characteristics of aqueous film-forming foam extinguishing agent AFFF, nozzle 17 and screen pack 18 are installed in the two ends of shower nozzle 16 respectively, end near nozzle 17 inboards in the circle hole shape passage 15 of sprinkler head main body 16 has a plug 19, has two along the axially symmetrical through hole 20 of passage 15 near passage 15 inwall places on the plug 19.It is that 60 conical bores 21 of spending are that the 60 taper elongated slots 27 of spending cut formed hole 22 mutually with a tapering that is positioned at its outside by being positioned at its inboard tapering that nozzle 17 has one.When the jet of foam solution during by through hole 20 ejections, to break up by the damping area of nozzle 17, two strands of jets intersect mixed and bring air into, cause foaming, and increase and spray the protection area.

As shown in Figure 4, temperature sensitive switch K ₁(seeing the mark among Fig. 5) 7 comprises the travel switch 24 that is installed in the temperature-sensitive seat 23 and is that 105 ℃ fusible alloy 28 is welded on the concealing shade 26 on the temperature-sensitive seat 23 with fusing point that the inboard, cover top of concealing shade 26 compresses to contact with the contact 25 of travel switch 24 and makes travel switch 24 be in off-state.The fusing point of fusible alloy 28 promptly is the temperature-sensitive value of this temperature sensitive switch K1.

Used control circuit comprises that has a normally-closed contact J in the utility model as shown in Figure 5 ₁With normally opened contact J ₂Relay J, two capacitor C ₂, C ₃With a protective resistance R ₃, by capacitor C ₂With C ₃After the parallel connection again with protective resistance R ₃The circuit that series connection constitutes is by the normally-closed contact J of relay J ₁With relay J and described temperature sensitive switch K ₁Receive again on the 6V dc source after the circuit parallel connection that series connection constitutes, and pass through the normally opened contact J of relay J ₂With described electric detonator R ₅13 electrode 12 is in series.

The principle that control circuit of the present utility model adopts alternating current-direct current to supply power with double circuit, at ordinary times directly by the power supply of 220V electric main, by transformer, rectification is given and is opened quick-fried capacitor C ₂, C ₃Charging, D ₇Be the alternate current operation indicator lamp.When civil power had a power failure for a long time or do not have the area of civil power to use, the utility model adopted DC power supply, and this controller still can operate as normal.D ₈Be temperature sense probe indicator lamp, during the follow-up work state, indicator lamp is not worked, once temperature sense switch K ₁Closure, K ₈Indicator lamp sends the light indication and reports to the police.D ₉Be electric detonator R ₅Open quick-fried and the detection indicator lamp.D ₁₀The Homeway.com Chinese percussion instrument is after control circuit triggers, and sends fire sound and light alarm signal to the field personnel.

When the protected object breaking out of fire, environment temperature improves, and makes temperature sensitive switch K ₁ Interior fusible alloy 28 fusings, travel switch 24 is opened, and connects control circuit and opens quick-fried electric detonator R ₅13, electric detonator R ₅13 open quick-fried after, the detonation gas of generation promotes piston 10 and move from the top down, moves downward thereby promote to seal tappet 2, open bottle valve 3, make extinguishing chemical AFFF foam solution under the effect of bottle internally-powered gas, be transported to sprinkler head 6 from pipeline, be sprayed onto on the kitchen range top by nozzle 17 again by siphon pipe.When piston 10 moves to lower dead center, retaining collude 14 with piston 10 on retaining collude groove engagement, make bottle valve 3 be in the state of unlatching always, thereby reach the purpose of fire extinguishing.In addition can also be in the wet K switch of sense ₁Last hand switch K in parallel ₂, hand switch K ₂Be installed near the kitchen range top, like this,, just can directly start the hand push button fire extinguishing if there is the people at the scene when catching fire.

Claims

1, a kind of kitchen range top automatic fire extinguisher, comprise a fire-suppression bottle (4) that extinguishing chemical is housed and stores, it is characterized in that also comprising many sprinkler head (6), at least one temperature sensitive switch K that are installed in above the kitchen range top that are installed in kitchen range top top and link to each other with bottle valve (3) on the fire-suppression bottle (4) by conduit (5) by bottle valve (a 3) sealing with valve body (1) and sealing tappet (2) ₁(7) and the control circuit that 350～500MA transient current can be provided, an electric detonation cylinder (8) is installed on described bottle valve (3), and described electric detonation cylinder (8) comprises that its lower end is installed in the cylinder body (9) of the valve body of bottle valve (3) (1) upper end, has retaining and collude electrode (12) and the electric detonator R that the piston (10) of groove, pressured mother (11) are fixed on cylinder body (9) upper end ₅(13), the upper end of valve body (1) is equipped with two relatively and is positioned at the retaining that cylinder body (9) matches with retaining groove shape on the piston (10) and colludes (14), the output of described control circuit is connected with electrode (12), and described extinguishing chemical is an AFFF AFFF extinguishing chemical.

2, kitchen range top automatic fire extinguisher according to claim 1, it is characterized in that: described sprinkler head (6) is the sprinkler head main body (16) that has circle hole shape passage (15) by, the nozzle (1 7) and the screen pack (18) that are installed in respectively in passage (15) two ends constitute, in the passage of sprinkler head main body (16), be provided with a plug (19) near nozzle (17) inboard, plug (19) is gone up near passage (15) inwall place has two through holes (20) along the axial symmetry of passage (15), and it is that 60 conical bores (21) of spending are that the 60 taper elongated slots (27) of spending cut formed hole (22) mutually with a tapering that is positioned at nozzle (17) outside by being positioned at the inboard tapering of nozzle (17) that described nozzle (17) has one.

3, according to the kitchen range top automatic fire extinguisher of claim 1 or 2, it is characterized in that: described temperature sensitive switch K ₁(7) comprise that inboard, cover top that the travel switch (24) that is installed in the temperature-sensitive seat (23) and the fusible alloy (28) and the temperature-sensitive seat (23) that by fusing point are 105-120 ℃ are concealing shade (26) that welding connects and concealing shade (26) is to compress with the contact (25) of travel switch (24) and contact, make travel switch (24) be in off-state.

4, according to the kitchen range top automatic fire extinguisher of claim 1 or 2, it is characterized in that: described control circuit comprises-individually have a normally-closed contact J ₁With normally opened contact J ₂Relay J, two capacitor C ₂, C ₃With a protective resistance R ₃, by capacitor C ₂With C ₃After the parallel connection again with protective resistance R ₃The circuit that series connection constitutes is by the normally-closed contact J of relay J ₁With relay J and described temperature sensitive switch K ₁Receive again on the 6V dc source after the circuit parallel connection that series connection constitutes, and pass through the normally opened contact J of relay J ₂With described electric detonator R ₅(13) electrode (12) is in series.

5, according to the kitchen range top automatic fire extinguisher of claim 3, described control circuit comprises that has a normally-closed contact J ₁With normally opened contact J ₂Relay J, two capacitor C ₂, C ₃With a protective resistance R ₃, by capacitor C ₂With C ₃After the parallel connection again with protective resistance R ₃The circuit that series connection constitutes is by the normally-closed contact J of relay J ₁With relay J and described temperature sensitive switch K ₁Receive again on the 6V dc source after the circuit parallel connection that series connection constitutes, and pass through the normally opened contact J of relay J ₂With described electric detonator R ₅(13) electrode (12) is in series.