Car with fire extinguishing function and elevator

Abstract

This utility model discloses a car and elevator with fire extinguishing function, including: a car top frame and a decorative ceiling; at least two flat cavities located on the upper side of the decorative ceiling and arranged around the center of the decorative ceiling, with a spray port on the side of the flat cavity adjacent to the car side wall; a non-pressurized fire extinguishing assembly, including a flexible membrane bladder containing a fire extinguishing agent and a driving gas membrane bladder containing a solid gas generator; and a guide channel, with its inlet end connected to the spray port and its outlet end extending to the bottom of the decorative ceiling. This utility model utilizes the often wasted space between the car top frame and the decorative ceiling, highly integrating the fire extinguishing function with the car body, without occupying the effective space inside the car, without affecting the passenger experience and the car's aesthetics. By guiding the direction of the fire extinguishing agent spray through the guide channel, the fire extinguishing agent can be prevented from being sprayed directly at passengers, reducing the possibility of secondary injuries.

Description

Technical Field

[0001] This utility model relates to the field of elevator car technology, and in particular to a car and elevator with fire extinguishing function. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the safe operation of elevators is of paramount importance. An elevator car is a small, enclosed space with high passenger traffic. Once a fire breaks out inside, the fire and smoke can spread rapidly, and trapped passengers are difficult to evacuate, easily leading to serious injuries and fatalities. A common existing solution is to place portable fire extinguishers directly inside the car. While this solution is inexpensive, it relies heavily on passengers' calm judgment and operational skills in emergencies, making it impractical for ordinary passengers. Furthermore, its placement may obstruct passenger passage and affect the car's aesthetics. Some solutions involve automatic fire suppression systems based on pressure vessels, typically placing a cylindrical pressure tank on the car top or bottom, with the release of extinguishing agent controlled by a solenoid valve. However, the pressure vessels in this system are bulky and have a fixed shape, making installation difficult in the extremely limited space of the car top or bottom. They often interfere with existing critical components such as safety brakes, guide shoes, and buffers, and forced installation can negatively impact the safe operation and maintenance of the elevator. At the same time, the fire extinguishing agent is sprayed directly at passengers at high speed from the nozzle, which poses a risk of secondary injury such as frostbite, suffocation, and shock to the personnel. Utility Model Content

[0003] The purpose of this utility model is to provide a car and elevator with fire extinguishing function to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a car with fire extinguishing function, including:

[0006] A car roof frame and a decorative ceiling, wherein the decorative ceiling is installed below the car roof frame;

[0007] At least two flat cavities are provided, located on the upper side of the decorative ceiling and arranged around the center of the decorative ceiling, and the side of the flat cavity adjacent to the side wall of the car is provided with a spray port;

[0008] A non-pressurized fire extinguishing assembly is disposed in the flat cavity, comprising a flexible membrane bladder containing a fire extinguishing agent and a driving gas membrane bladder containing a solid gas generator. The flexible membrane bladder is disposed adjacent to the nozzle, and the driving gas membrane bladder is located on the side of the flexible membrane bladder away from the nozzle. The driving gas membrane bladder is provided with an electric igniter for triggering the solid gas generator to produce high-pressure gas.

[0009] The guide channel has an inlet end that connects to the spray nozzle and an outlet end that extends to the bottom of the decorative ceiling.

[0010] This technical solution utilizes the often-wasted space between the car roof frame and the decorative ceiling by placing a flat cavity on the upper side of the decorative ceiling. This highly integrates the fire extinguishing function with the car body, without occupying effective space inside the car, and without affecting passenger experience or car aesthetics. It solves the problem of traditional cylindrical pressure vessels being difficult to install in narrow car roofs. Furthermore, this embodiment uses a non-pressurized fire extinguishing component, whose internal pressure is generated only at the moment of activation. Long-term storage poses no risk of leakage or explosion, ensuring safety and reliability. The non-pressurized design relies on a solid gas generator to produce the driving gas, resulting in rapid activation, unaffected by changes in ambient temperature, and higher reliability than traditional methods that rely on long-term high-pressure gas storage. The extinguishing agent is stored in a flexible membrane bladder, physically isolated from the driving gas membrane bladder of the driving source, ensuring the purity and long-term stability of the extinguishing agent. A guide channel directs the extinguishing agent's spray direction, preventing the extinguishing agent (especially low-temperature, high-speed agents) from directly spraying onto passengers, reducing the possibility of secondary injuries.

[0011] As an extension of the above solution, the extinguishing agent is liquid perfluorohexanone (FEA). FEA is a safe extinguishing agent with extremely low toxicity, suitable for use in occupied areas, avoiding the asphyxiation risk associated with traditional extinguishing agents or the harm to personnel from chemical extinguishing agents. Its non-conductive properties make it ideal for extinguishing common electrical fires in elevator cars, such as short circuits and control panel fires.

[0012] As an extension of the above scheme: the outlet end of the guide channel is a gradually widening nozzle in the shape of multiple arc hooks. The multiple arc hooks include a middle section of the channel located between the decorative ceiling and the car side wall, an outward bend section extending downward from the middle section of the channel and turning towards the center of the decorative ceiling at the bottom of the decorative ceiling, and a hook section that hooks back towards the car side wall from the end of the outward bend section. The end of the hook section is the nozzle.

[0013] This extended design increases the cross-sectional area of ​​the fluid through a gradually widening nozzle, effectively converting the kinetic energy (velocity) of the extinguishing agent into pressure energy, significantly reducing the outlet flow velocity and preventing high-speed fluid from directly impacting passengers. Furthermore, the multi-segment arc-shaped hook design, especially the reverse hook section, precisely guides the extinguishing agent to the side walls of the car or the corner where the car top meets the side walls. After being reflected off the wall, the extinguishing agent settles and diffuses more effectively, creating a uniform extinguishing concentration covering the entire car space. This prevents the extinguishing agent (especially low-temperature, high-speed agents) from directly spraying onto passengers, reducing the possibility of secondary injuries.

[0014] As an extension of the above scheme: the spray direction of the gradually widening nozzle is set at an angle upward relative to the horizontal direction. The upward spray direction allows the extinguishing agent to first impact the top plate or upper side wall of the car. After being reflected by the wall surface, the extinguishing agent can better settle and diffuse downward, forming a uniform extinguishing concentration covering the entire car space.

[0015] As an extension of the above solution: a rigid baffle or diffuser is provided on the side wall of the car, and the rigid baffle or diffuser is arranged corresponding to the spray direction of the widening nozzle. The rigid baffle or diffuser ensures that the extinguishing agent ejected from the widening nozzle impacts the predetermined surface, forcing it to diffuse and atomize, and preventing high-speed fluid (even after buffering) from directly washing over and potentially damaging the decorative materials of the car's inner wall.

[0016] As an extension of the above solution: the side wall of the car is provided with a magazine for storing a folded emergency breathing mask. The magazine is located near the button panel inside the car. The door panel of the magazine is flush with the side wall of the car and the top of the door panel is hinged to the side wall of the car by a torsion spring. The bottom of the door panel is provided with a latch, and the side wall of the car is provided with an electromagnetic lock corresponding to the latch position.

[0017] This extended design automatically opens the emergency breathing mask door in the event of a fire, allowing it to drop out in front of passengers, significantly improving the reliability and speed of retrieval in panicked and dimly lit environments. The adjacent button panel is ergonomically positioned, serving as a visual and behavioral focal point for passengers within the elevator, making it easily noticeable. The door panel is flush with the car's side walls, ensuring the aesthetics and integrity of the car's interior.

[0018] As an extension of the above scheme, the injection port is a long, narrow slot. The slot increases the initial injection area. Compared with a circular nozzle, the slot provides a larger initial opening area under the same conditions, which helps to reduce the initial flow velocity and pressure of the fluid. Moreover, its shape matches the form of the flat cavity, making the design more reasonable.

[0019] As an extension of the above solution: four flat cavities are provided, arranged in a cross-shaped symmetrical layout around the center of the decorative ceiling. This symmetrical layout allows for simultaneous release of extinguishing agent from four directions within the car, achieving the most uniform extinguishing agent concentration distribution in the shortest time and providing full coverage.

[0020] As an extension of the above solution: the flexible membrane bladder and / or the propellant gas membrane bladder is a sealed bladder made of a composite film material including an aluminum foil barrier layer. The aluminum foil barrier layer provides barrier properties against gases and liquids, ensuring that the extinguishing agent and propellant gas will not permeate, evaporate, or deteriorate during a storage period of up to several years, thus guaranteeing the long-term reliability of the system.

[0021] On the other hand, this utility model also provides an elevator, including a car with a fire extinguishing function as described above. This utility model highly integrates the fire extinguishing function within the car, without occupying effective space inside the car, and without affecting passenger experience or the car's aesthetics. It solves the problem of traditional cylindrical pressure vessels being difficult to install in the narrow car ceiling. Furthermore, this embodiment uses a non-pressurized fire extinguishing component, relying on a solid gas generator to produce the driving gas. It has a fast start-up speed, is unaffected by changes in ambient temperature, and has higher reliability than traditional methods that rely on long-term pressurization of high-pressure gas. By guiding the direction of the fire extinguishing agent spray through a guide channel, it can prevent the fire extinguishing agent (especially low-temperature, high-speed) from being directly sprayed onto passengers, reducing the possibility of secondary injuries. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a schematic diagram of the car structure in an embodiment;

[0024] Figure 2 yes Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0025] Figure 3 This is a schematic diagram of the structure of the flat cavity in the embodiment;

[0026] Figure 4 This is a schematic diagram of the cross-symmetrical layout of the flat cavity in the embodiment on the decorative ceiling.

[0027] In the attached diagram: 100: car roof frame, 110: rigid baffle, 200: decorative ceiling, 300: flat cavity, 310: nozzle, 400: non-pressurized fire extinguishing assembly, 410: flexible membrane bladder, 420: propellant gas membrane bladder, 430: electric ignition head, 500: guide channel, 510: widening nozzle, 520: middle section of the channel, 530: outer bend, 540: hook section, 600: ammunition magazine. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figures 1 to 4 The following are several embodiments of a car and elevator with fire extinguishing function according to this utility model.

[0033] In some embodiments, such as Figures 1 to 2 As shown, this utility model provides a car with a fire extinguishing function, comprising:

[0034] The car roof frame 100 and the decorative ceiling 200 are installed below the car roof frame 100;

[0035] At least two flat cavities 300 are provided, located on the upper side of the decorative ceiling 200 and surrounding the center of the decorative ceiling 200. The side of the flat cavity 300 adjacent to the side wall of the car is provided with a spray nozzle 310. The flat cavity 300 is relative to the traditional cylindrical tank, and its cross-sectional shape can be elliptical, rounded rectangle, racetrack shape, etc. The material of the flat cavity has a certain strength, such as 1.0-2.0mm thick aluminum alloy plate, stainless steel plate or engineering plastic (such as PP) stamped or vacuum formed by mold. The interior is designed with ribs for fixing the membrane bladder.

[0036] A non-pressurized fire extinguishing assembly 400, disposed within the flat cavity 300, includes a flexible membrane bladder 410 containing the extinguishing agent and a driving gas membrane bladder 420 containing a solid gas generator. The flexible membrane bladder 410 is used to seal and store the extinguishing agent. Its material is a composite material compatible with perfluorohexanone and with good barrier properties, such as an aluminum-plastic composite film (PET / AL / PE). The aluminum foil layer thickness is typically 7-9 μm, ensuring that the extinguishing agent does not leak or volatilize over a long period. The membrane bladder is designed to tear easily under pressure, such as by having pre-fabricated weak lines. The driving gas membrane bladder... 420 is used to encapsulate a solid gas generator. Its material can have higher burst resistance than the flexible membrane bladder, such as using metal foil composite material or high-strength engineering plastic. The flexible membrane bladder 410 is located adjacent to the injection port 310. The driving gas membrane bladder 420 is located on the side of the flexible membrane bladder 410 away from the injection port 310. The driving gas membrane bladder 420 is provided with an electric igniter 430 for triggering the solid gas generator to produce high-pressure gas. The electric igniter is a mature military / civilian component that heats up and ignites the igniter after receiving a specific current.

[0037] The guide channel 500 has an inlet end that connects to the spray nozzle 310 and an outlet end that extends to the bottom of the decorative ceiling 200. The function of the guide channel is to convert the high-speed, concentrated fluid kinetic energy ejected from the spray nozzle into pressure energy and guide it to diffuse and release in a predetermined direction (such as the top corner of the car) through its shape.

[0038] In this embodiment, the flat cavity can be fixedly connected from below the decorative ceiling with screws, or connected to the keel frame of the decorative ceiling through a snap-fit ​​structure. The trigger signal of the electric igniter is linked to the fire detection and control system, which includes fire detectors (such as smoke detectors and heat detectors) and controllers installed in the car. The controller receives the signals from the detectors and issues a start command to the electric igniter after confirming the fire. This embodiment does not limit the means by which the fire detection and control system realizes fire detection and outputs control current signals through fire detectors. Technicians can set it themselves according to actual usage needs. For example, the controller can control all the electric igniters of the flat cavities to operate simultaneously, or, based on the position signal of the fire detector, prioritize the activation of the electric igniter of the flat cavity closest to the fire source. This embodiment only needs to realize fire detection and trigger signal output of the electric igniter through the existing fire detection and control system when a fire occurs. The inlet end of the guide channel is provided with a sealing ring to form a sealed connection with the spray port of the flat cavity. The decorative ceiling is provided with a through hole for the guide channel to pass through. The diameter of the through hole is slightly larger than the outer diameter of the guide channel, and it can be sealed with sealant after installation.

[0039] The working principle of this embodiment is as follows: In standby mode, the flexible membrane bladder is filled with a predetermined dose of liquid perfluorohexanone fire extinguishing agent, while the driving gas membrane bladder is filled with a solid gas generator. The entire device is under normal pressure, and the electric igniter is on standby. When the fire detection and control system inside the car detects and confirms a fire, the control system sends a starting current signal to the electric igniter. The electric igniter ignites the solid gas generator, which reacts rapidly within milliseconds, generating a large amount of non-toxic, harmless high-pressure gas (such as nitrogen), filling the driving gas membrane bladder. The rapidly expanding high-pressure gas compresses adjacent flexible membrane bladders, causing them to rupture instantaneously. Driven by the high-pressure gas, the liquid perfluorohexanone is ejected from the nozzle. The ejected gas-liquid mixture enters the guide channel, whose shape converts its kinetic energy and guides its flow direction, ultimately releasing it into the car from the outlet. Perfluorohexanone is atomized and vaporized, rapidly absorbing heat and inhibiting the combustion chain reaction through chemical action, achieving highly efficient fire extinguishing.

[0040] This embodiment utilizes the often-wasted space between the car roof frame and the decorative ceiling by placing the flat cavity on the upper side of the decorative ceiling. This highly integrates the fire extinguishing function with the car body, without occupying effective space inside the car, and without affecting passenger experience or car aesthetics. It solves the problem of traditional cylindrical pressure vessels being difficult to install in narrow car roofs. Furthermore, this embodiment uses a non-pressurized fire extinguishing assembly, whose internal pressure is generated only at the moment of activation. Long-term storage poses no risk of leakage or explosion, ensuring safety and reliability. The non-pressurized design relies on a solid gas generator to produce the driving gas, resulting in rapid activation, unaffected by changes in ambient temperature, and higher reliability than traditional methods that rely on long-term high-pressure gas storage. The extinguishing agent is stored in a flexible membrane bladder, physically isolated from the driving gas membrane bladder of the driving source, ensuring the purity and long-term stability of the extinguishing agent. A guide channel directs the extinguishing agent spray direction, preventing the extinguishing agent (especially low-temperature, high-speed) from directly spraying onto passengers, reducing the possibility of secondary injuries.

[0041] In an optional embodiment, the extinguishing agent is liquid perfluorohexanone (FEA). FEA is a safe extinguishing agent with extremely low toxicity, suitable for use in occupied areas, avoiding the asphyxiation risks associated with traditional extinguishing agents or the harm to personnel from chemical extinguishing agents. Its non-conductive properties make it ideal for extinguishing common electrical fires in elevator cars, such as short circuits and control panel fires.

[0042] In an optional embodiment, such as Figure 2 and Figure 3As shown, the outlet end of the guide channel 500 is a gradually widening nozzle 510 in the shape of multiple arc-shaped hooks. The multiple arc-shaped hooks include a middle section 520 of the channel located between the decorative ceiling 200 and the car side wall, an outward bend section 530 extending downward from the middle section 520 and turning towards the center of the decorative ceiling 200 at the bottom position of the decorative ceiling 200, and a hook section 540 hooking back towards the car side wall from the end of the outward bend section 530. The end of the hook section 540 is the nozzle.

[0043] This embodiment increases the cross-sectional area of ​​the fluid through a gradually widening nozzle, effectively converting the kinetic energy (velocity) of the extinguishing agent into pressure energy, significantly reducing the outlet flow velocity and preventing high-speed fluid from directly impacting passengers. Furthermore, the multi-segment arc-shaped hook design, especially the reverse hook section, guides the extinguishing agent to the side walls of the car or the corner where the car top meets the side walls. After being reflected off the wall surface, the extinguishing agent can better settle and diffuse downwards, forming a uniform extinguishing concentration covering the entire car space, preventing the extinguishing agent (especially low-temperature, high-speed) from directly spraying onto passengers and reducing the possibility of secondary injuries.

[0044] In an optional embodiment, such as Figure 2 As shown, the spray direction of the gradually widening nozzle 510 is inclined upward relative to the horizontal direction. The inclined upward spray direction in this embodiment allows the extinguishing agent to first impact the top plate or upper side wall of the car. After being reflected by the wall surface, the extinguishing agent can better settle and diffuse downward, forming a uniform extinguishing concentration covering the entire car space, avoiding the extinguishing agent (especially low temperature and high speed) from being sprayed directly at the passengers, and reducing the possibility of secondary injuries.

[0045] In an optional embodiment, such as Figure 1 and Figure 2 As shown, a rigid baffle 110 or a diffuser plate is provided on the side wall of the car, and the rigid baffle 110 or diffuser plate is arranged corresponding to the spray direction of the gradually widening nozzle 510. The rigid baffle can be a simple plate with certain strength and corrosion resistance, such as 304 stainless steel plate or anodized aluminum plate; the diffuser plate can be a plate with a textured surface to better promote atomization.

[0046] In this embodiment, a rigid baffle or diffuser ensures that the extinguishing agent ejected from the widening nozzle impacts the predetermined surface, forcing it to diffuse and atomize, thus preventing high-speed fluid (even after buffering) from directly washing over and potentially damaging the interior decorative materials of the car.

[0047] In an optional embodiment, such as Figure 1As shown, the side wall of the car is provided with a magazine 600 for storing a folded emergency breathing mask. The magazine 600 is located near the button panel inside the car. The door panel of the magazine 600 is flush with the side wall of the car, and the top of the door panel is hinged to the side wall of the car by a torsion spring. The bottom of the door panel is provided with a latch, and the side wall of the car is provided with an electromagnetic lock corresponding to the latch position.

[0048] Those skilled in the art will understand that the magazine is an integrated mechanism assembly of an electromagnetic lock, a torsion spring, and a door panel. The torsion spring ensures reliable opening of the door panel (overcoming friction and gravity), and its torque is kept from being excessive to prevent injury to passengers. The electromagnetic lock is normally closed and releases when triggered by power failure or power supply. Its attraction force must match the torque of the torsion spring to ensure that it is locked under normal conditions and reliably released when triggered.

[0049] In the event of a fire, the emergency breathing mask door automatically pops open, allowing it to fall in front of the passengers, greatly improving the reliability and speed of retrieval in panicked and dimly lit environments. The adjacent button panel is ergonomically positioned, serving as a visual and behavioral focal point for passengers within the elevator, making it easily noticeable. The door panel is flush with the side wall of the car, ensuring the aesthetics and integrity of the car's interior.

[0050] In an optional embodiment, such as Figure 3 As shown, the injection port 310 is a long strip-shaped slot. The strip-shaped slot increases the initial injection area. Compared with a circular nozzle, the strip-shaped slot provides a larger initial opening area under the same conditions, which is beneficial to reduce the initial injection velocity and pressure of the fluid. Moreover, its shape matches the shape of the flat cavity, making the design more reasonable.

[0051] In an optional embodiment, such as Figure 4 As shown, four flat cavities 300 are arranged in a cross-shaped symmetrical layout around the center of the decorative ceiling 200. This four-point symmetrical layout allows for simultaneous release of extinguishing agent from four directions of the elevator car, achieving the most uniform extinguishing agent concentration distribution in the shortest time and full coverage. The symmetrical layout around the center of the decorative ceiling helps maintain the overall weight balance of the elevator car, minimizing the impact on the smoothness of elevator operation. The multiple flat cavities and extinguishing components provide system redundancy; even if one extinguishing component fails unexpectedly, the others can still function, improving system reliability.

[0052] In an optional embodiment, the flexible membrane and / or the driving gas membrane is a sealed capsule made of a composite film material including an aluminum foil barrier layer.

[0053] In this embodiment, the aluminum foil barrier layer provides barrier properties against gases and liquids, ensuring that the extinguishing agent and propellant gas will not permeate, evaporate, or deteriorate during a storage period of up to several years, thus guaranteeing the long-term reliability of the system. For example, a typical composite structure consists of three layers: an outer layer of PET providing mechanical strength, a middle layer of AL providing barrier properties, and an inner layer of PE providing heat-sealing performance. This composite material can be easily manufactured into various shapes of sealing capsules using a mature hot-pressing process. Such composite materials (e.g., PET / AL / PE) have good chemical compatibility with perfluorohexanone and solid gas generators and will not react.

[0054] On the other hand, embodiments of the present invention also provide an elevator, including a car with fire extinguishing function as in one or more of the above-described alternative embodiments.

[0055] This embodiment integrates fire extinguishing functionality within the car, without occupying valuable interior space, and without affecting passenger experience or the car's aesthetics. It solves the problem of installing traditional cylindrical pressure vessels in the confined space of the car roof. Furthermore, this embodiment employs a non-pressurized fire extinguishing assembly, relying on a solid gas generator to produce the driving gas. This results in rapid activation, is unaffected by changes in ambient temperature, and offers higher reliability than traditional methods that rely on long-term pressurization of high-pressure gas. By guiding the extinguishing agent's spray direction through a guide channel, it prevents the extinguishing agent (especially low-temperature, high-speed agents) from directly spraying onto passengers, reducing the possibility of secondary injuries.

[0056] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A car with fire extinguishing function, characterized in that, include: A car roof frame (100) and a decorative ceiling (200), the decorative ceiling (200) being installed below the car roof frame (100); At least two flat cavities (300) are provided, located on the upper side of the decorative ceiling (200) and surrounding the center of the decorative ceiling (200). The side of the flat cavity (300) adjacent to the car side wall is provided with a spray port (310). A non-pressurized fire extinguishing assembly (400) is disposed within the flat cavity (300). It includes a flexible membrane bladder (410) containing a fire extinguishing agent and a driving gas membrane bladder (420) containing a solid gas generator. The flexible membrane bladder (410) is disposed adjacent to the nozzle (310), and the driving gas membrane bladder (420) is located on the side of the flexible membrane bladder (410) away from the nozzle (310). The driving gas membrane bladder (420) is provided with an electric igniter (430) for triggering the solid gas generator to produce high-pressure gas. The guide channel (500) has an inlet end that connects to the spray nozzle (310) and an outlet end that extends to the bottom of the decorative ceiling (200).

2. A fire-extinguishing car according to claim 1, characterized in that: The extinguishing agent is liquid perfluorohexanone.

3. A fire-extinguishing car according to claim 1, characterized in that: The outlet end of the guide channel (500) is a gradually widening nozzle (510) in the shape of multiple arc hooks. The multiple arc hooks include a middle section (520) of the channel located between the decorative ceiling (200) and the car side wall, an outer bend section (530) extending downward from the middle section (520) and turning towards the center of the decorative ceiling (200) at the bottom position of the decorative ceiling (200), and a hook section (540) hooking back towards the car side wall from the end of the outer bend section (530). The end of the hook section (540) is the nozzle.

4. A fire-extinguishing car according to claim 3, characterized in that: The jetting direction of the gradually widening nozzle (510) is set at an angle upward relative to the horizontal direction.

5. A fire-extinguishing car according to claim 3, characterized in that: The car side wall is provided with a rigid baffle (110) or a diffuser plate, which is set in accordance with the spray direction of the gradually widening nozzle (510).

6. A fire-extinguishing car according to claim 3, characterized in that: The side wall of the car is provided with a magazine (600) for storing a folded emergency breathing mask. The magazine (600) is located near the button panel inside the car. The door panel of the magazine (600) is flush with the side wall of the car and the top of the door panel is hinged to the side wall of the car by a torsion spring. The bottom of the door panel is provided with a latch, and the side wall of the car is provided with an electromagnetic lock corresponding to the latch position.

7. A fire-extinguishing car according to claim 1, characterized in that: The injection port (310) is a long strip-shaped slot.

8. A fire-extinguishing car according to claim 1, characterized in that: Four flat cavities (300) are provided and arranged in a cross-shaped symmetrical layout around the center of the decorative ceiling (200).

9. A fire-extinguishing car according to claim 1, characterized in that: The flexible membrane bladder (410) and / or the driving gas membrane bladder (420) are sealed bladders made of a composite film material including an aluminum foil barrier layer.

10. An elevator, characterized in that: Includes a car with fire extinguishing function as described in any one of claims 1-9.

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