Elevator fire-fighting early warning device

Abstract

The invention relates to the technical field of elevator safety early-warning devices, in particular to an elevator fire-fighting early-warning device which comprises a smoke sensing alarm and further comprises a draft fan detachably installed at the top end of an elevator car through an installation plate, and a smoke exhaust pipe is installed on the draft fan; the protection unit comprises a gathering bin installed at the smoke outlet end of the smoke extraction pipe and a flame extinguishing bin installed in the gathering bin, and the flame extinguishing bin is filled with fire extinguishing filler used for extinguishing sparks; a vertical bin is connected to the position, corresponding to the flame extinguishing bin, of the gathering bin in a communicating mode, and a dust filtering cylinder is installed in the vertical bin. According to the fire-fighting early warning device for the elevator, smoke in the elevator car can be sucked away through the smoke suction pipe and the suction fan, so that the smoke obtains guidance quality; the flame extinguishing bin is matched with the fire extinguishing filler, so that sparks in smoke can be extinguished, and fire spreading is slowed down; solid particles in the flue gas are further filtered by the dust filtering cylinder, so that the harm in the flue gas diffusion process is reduced, and more buffer time is won for crowd evacuation and fire rescue.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator safety early warning devices, and in particular to an elevator fire early warning device. Background Art

[0002] High-rise buildings are equipped with a large number of basic elevators and corresponding elevator shafts. The existence of the elevator shaft causes a fire in the area to form a "chimney effect", which then causes high-temperature fireworks to spread rapidly along the elevator shaft, posing great difficulties for firefighting and rescue.

[0003] To this end, consideration is given to improving the fire warning and protection capabilities of elevators. Although existing fire sensors can capture smoke and issue early warnings, there is no effective means to curb the spread of fire. Traditional building interior sprinkler heads are not suitable for moving elevator cars. Sparks in fireworks can easily cause the fire to spread further, and smoke particles in fireworks are an important factor in fire deaths.

[0004] In summary, we consider designing an elevator fire-fighting device that can contain or slow down the spread of fire through smoke, and slow down the emission of smoke particles, so as to gain buffer time for firefighting and disaster relief, and improve the fire-fighting ability of the elevator car itself; in view of this, we propose an elevator fire-fighting early warning device. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies mentioned in the above background technology and provide an elevator fire warning device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An elevator fire warning device includes a smoke sensor alarm for triggering a warning when a fire occurs, and also includes:

[0008] An exhaust fan, used for extracting smoke, is detachably mounted on the top of the elevator car through a mounting plate, and a smoke extraction pipe is mounted on the exhaust fan;

[0009] A protection unit, used to reduce the spillage of sparks and reduce the content of smoke particles in the smoke, comprising a gathering bin installed at the smoke outlet end of the smoke extraction pipe, and a flame extinguishing bin installed in the gathering bin, wherein the flame extinguishing bin is filled with a fire extinguishing filler for extinguishing sparks;

[0010] A vertical bin is conductively connected on the convergence bin and located at a position corresponding to the flame extinguishing bin, and a dust filter cartridge for filtering smoke particles is installed inside the vertical bin.

[0011] Preferably, two of the exhaust fans and the smoke extraction pipes are symmetrically mounted on the mounting plate;

[0012] The smoke extraction pipe comprises a smoke hood arranged above the exhaust fan and a smoke guide pipe connected and installed on the smoke hood.

[0013] Preferably, two first guide orifice plates and a second guide orifice plates are provided at the walls at both ends of the converging bin, which are arranged symmetrically with respect to the center;

[0014] The two smoke guide pipes are connected and installed at the first guide hole plate and the second guide hole plate respectively.

[0015] Preferably, the convergence chamber is provided with a protective inner cavity, and the flame extinguishing chamber is installed in the protective inner cavity;

[0016] The flame extinguishing chamber adopts a cylindrical structure with holes arranged in the chamber wall.

[0017] Preferably, ventilation holes are respectively provided at an upper portion of the first guide hole plate and a lower portion of the second guide hole plate.

[0018] Preferably, wind wheels are detachably mounted at both ends of the flame extinguishing bin, and rotating shafts are threadedly mounted at the axes of the flame extinguishing bin and the wind wheel;

[0019] The flame extinguishing chamber and the wind wheel are rotatably installed in the protective inner cavity through the rotating shaft.

[0020] Preferably, the vertical bin is provided with a vertical installation cavity for inserting the dust filter cartridge;

[0021] The dust filter cartridge is provided with multiple layers of filter screens for filtering smoke and dust particles.

[0022] Preferably, a filling filter cavity for filling filter material is provided inside the dust filter cartridge and above the filter screen.

[0023] Preferably, the filter material is glass fiber flame retardant filter cotton.

[0024] Preferably, the flame extinguishing chamber is filled with sodium carbonate particles as a fire extinguishing filler.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The elevator fire warning device can extract the smoke inside the elevator car through two smoke extraction pipes symmetrically installed on the protection unit and an exhaust fan, so that the smoke can be guided;

[0027] 2. The protection unit is equipped with a flame extinguishing chamber and fire extinguishing filler to extinguish sparks in the smoke and slow down the spread of fire;

[0028] 3. The dust filter can further filter the solid particles in the smoke, reduce the harmfulness of the smoke during diffusion, and buy more buffer time for crowd evacuation and fire rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 This is one of the installation diagrams of the embodiment of the present invention;

[0031] Figure 2 This is the second installation diagram of the embodiment of the present invention;

[0032] Figure 3 This is one of the overall structural schematic diagrams of the present invention;

[0033] Figure 4 This is the second schematic diagram of the overall structure of the present invention;

[0034] Figure 5 It is a top view of the overall structure of the present invention;

[0035] Figure 6 It is one of the cutaway exploded views of the overall structure of the present invention;

[0036] Figure 7 This is the second cutaway exploded view of the overall structure of the present invention;

[0037] Figure 8 This is a cutaway exploded view of the protection unit of the present invention.

[0038] The meaning of each number in the figure is:

[0039] 1. Elevator car; 2. Mounting plate; 3. Exhaust fan; 4. Smoke sensor alarm; 5. Smoke pipe; 51. Smoke hood; 52. Smoke guide pipe;

[0040] 6. Protection unit; 61. Converging chamber; 611. Protection inner cavity; 62. Vertical chamber; 621. Installing vertical cavity; 63. First guide hole plate; 64. Second guide hole plate; 65. Flame extinguishing chamber; 66. Wind wheel; 67. Rotating shaft; 68. Dust filter cartridge; 681. Filter screen; 682. Filling filter cavity. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0042] See also Figure 1-8 The present invention describes the above technical solution in detail through the following embodiments:

[0043] An elevator fire warning device includes a smoke sensor alarm 4 for triggering a warning when a fire occurs, and also includes:

[0044] Two exhaust fans 3 are used to extract smoke, such as Figure 3-Figure 5 The installation position shown is detachably installed on the top of the elevator car 1 through the installation plate 2, and two smoke extraction pipes 5 are symmetrically installed on the exhaust fan 3. The smoke extraction pipe 5 includes a smoke hood 51 arranged above the exhaust fan 3 and a smoke guide pipe 52 installed on the smoke hood 51. The purpose of the exhaust fan 3 is to draw the fire smoke into the smoke extraction pipe 5 by exhausting and discharge it to the tail end of the pipe body.

[0045] The protection unit 6 is used to reduce the spillage of sparks and reduce the content of smoke particles in the smoke, such as Figure 6-Figure 8 The structure shown includes a gathering bin 61 installed at the smoke outlet end of the smoke extraction pipe 5, the gathering bin 61 is provided with a protective inner cavity 611, a flame extinguishing bin 65 is installed in the gathering bin 61, and the flame extinguishing bin 65 is filled with a fire extinguishing filler for extinguishing sparks. In order to obtain fluidity, the flame extinguishing bin 65 adopts a cylindrical structure with holes in the bin wall. In order to better annihilate sparks in the smoke and prevent sparks from spreading with the smoke and causing serious fire, the flame extinguishing bin 65 is filled with sodium carbonate particles as a fire extinguishing filler, wherein the sodium carbonate is a white solid state at room temperature and can be stored at room temperature, which can be suitable for the use environment of the elevator; in addition, under the action of high-temperature combustion gas, the sodium carbonate can be decomposed into sodium oxide and carbon dioxide. This process is an endothermic reaction, which can absorb a large amount of heat and reduce the temperature of the fire source, and the released carbon dioxide can dilute the oxygen concentration in the air, extinguish the sparks, and curb or delay the spread of the fire from the source.

[0046] In order to make the sodium carbonate inside the flame extinguishing chamber 65 contact the fireworks more evenly and improve the utilization rate, the present embodiment realizes the rotatable installation of the flame extinguishing chamber 65. Specifically, wind wheels 66 are detachably installed at both ends of the flame extinguishing chamber 65, and a rotating shaft 67 is threadedly installed at the axis of the flame extinguishing chamber 65 and the wind wheel 66. The flame extinguishing chamber 65 and the wind wheel 66 are rotatably installed in the protective inner cavity 611 through the rotating shaft 67.

[0047] It should be noted that the reference Figure 6 and Figure 7In the structure shown, two first guide orifice plates 63 and second guide orifice plates 64 are provided at the walls at both ends of the convergence bin 61, and two symmetrically arranged first and second guide orifice plates 63 and 64 are provided. In order to enable the wind wheel 66 to drive the flame extinguishing bin 65 to rotate, thereby achieving a more uniform contact of the internal filling material with the smoke, ventilation holes are provided at the upper part of the first guide orifice plate 63 and the lower part of the second guide orifice plate 64, respectively. The two smoke guide pipes 52 are respectively connected and installed at the first guide orifice plate 63 and the second guide orifice plate 64, and the two exhaust fans 3 provide blowing force to the wind wheel 66 to achieve rotation.

[0048] In summary, the setting of the flame extinguishing chamber 65 can reduce the temperature of the smoke and extinguish sparks, but in addition to this, the solid particles contained in the smoke are not processed. Therefore, in this embodiment, a vertical chamber 62 is connected to the convergence chamber 61 and located at the corresponding position of the flame extinguishing chamber 65. The vertical chamber 62 is provided with an installation vertical cavity 621 for inserting the dust filter cartridge 68; the dust filter cartridge 68 is provided with a filter screen 681 for filtering smoke particles, and a filling filter chamber 682 for filling glass fiber flame retardant filter cotton is provided inside the dust filter cartridge 68 and above the filter screen 681; that is, the smoke is blown into the dust filter cartridge 68 from bottom to top, and will flow with the released carbon dioxide. This process avoids igniting the glass fiber flame retardant filter cotton, and the glass fiber flame retardant filter cotton can cooperate with the filter screen 681 to filter the smoke particles, thereby reducing the solid content of the exhaust smoke and reducing its destructiveness, thereby improving the fire protection performance, buying time for subsequent fire rescue, and avoiding the problem of rapid spread of fire when a fire occurs in the elevator car.

[0049] It should be noted that in the embodiments of the present invention, there are descriptions involving "first", "second", etc., which are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. An elevator fire warning device, comprising a smoke sensor alarm (4) for triggering a warning when a fire occurs, characterized in that: Also includes: An exhaust fan (3) is used to extract smoke and is detachably mounted on the top of the elevator car (1) via a mounting plate (2); a smoke extraction pipe (5) is mounted on the exhaust fan (3); The protection unit (6) is used to reduce the spillage of sparks and reduce the content of smoke particles in the smoke, comprising a gathering bin (61) installed at the smoke outlet end of the smoke extraction pipe (5), and a flame extinguishing bin (65) installed in the gathering bin (61), wherein the flame extinguishing bin (65) is filled with a fire extinguishing filler for extinguishing sparks; A vertical bin (62) is conductively connected to the convergence bin (61) at a position corresponding to the flame extinguishing bin (65), and a dust filter cartridge (68) for filtering smoke particles is installed inside the vertical bin (62).

2. The elevator fire warning device according to claim 1, characterized in that: The two exhaust fans (3) and the smoke extraction pipe (5) are symmetrically mounted on the mounting plate (2); The smoke extraction pipe (5) comprises a smoke hood (51) arranged above the exhaust fan (3) and a smoke guide pipe (52) connected and mounted on the smoke hood (51).

3. The elevator fire warning device according to claim 2, characterized in that: Two first guide orifice plates (63) and a second guide orifice plate (64) are centrally symmetrically arranged at the walls of both ends of the converging bin (61); The two smoke guide pipes (52) are respectively connected and installed at the first guide hole plate (63) and the second guide hole plate (64).

4. The elevator fire warning device according to claim 3, characterized in that: The converging chamber (61) is provided with a protective inner cavity (611), and the flame extinguishing chamber (65) is installed in the protective inner cavity (611); The flame extinguishing chamber (65) is a cylindrical structure with holes provided in the chamber wall.

5. The elevator fire warning device according to claim 4, characterized in that: Ventilation holes are respectively provided at the upper portion of the first guide hole plate (63) and at the lower portion of the second guide hole plate (64).

6. The elevator fire warning device according to claim 5, characterized in that: Wind wheels (66) are detachably mounted on both ends of the flame extinguishing chamber (65), and rotating shafts (67) are threadedly mounted at the axes of the flame extinguishing chamber (65) and the wind wheel (66); The flame extinguishing chamber (65) and the wind wheel (66) are rotatably mounted in the protective inner cavity (611) via the rotating shaft (67).

7. The elevator fire warning device according to claim 1, characterized in that: The vertical bin (62) is provided with a mounting vertical cavity (621) for inserting the dust filter cartridge (68); The dust filter cartridge (68) is provided with multiple layers of filter screens (681) for filtering smoke particles.

8. The elevator fire warning device according to claim 7, characterized in that: A filling filter cavity (682) for filling filter material is provided inside the dust filter cartridge (68) and above the filter screen (681).

9. The elevator fire warning device according to claim 8, characterized in that: The filter material is glass fiber flame retardant filter cotton.

10. The elevator fire warning device according to claim 4, characterized in that: The flame extinguishing bin (65) is filled with sodium carbonate particles as a fire extinguishing filler.

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