Carbon fiber composite thermosetting fireproof door

Abstract

The invention provides a thermosetting fireproof door made of a carbon fiber composite material. The thermosetting fireproof door is composed of an outer layer plate, a door core and an inner layer plate. The outer layer plate is provided with a smoke sensing mechanism which can detect the smoke concentration and output an electric signal to the microcontroller, the microcontroller controls the motor to start when judging that the concentration reaches a set threshold value, and the motor drives the mounting pipe to rotate through the driving gear and the driven gear. A memory alloy hoop is embedded in the mounting pipe, is flexible at normal temperature, is rigid at high temperature and hoops the polygon prism, so that the polygon prism rotates along with the mounting pipe, and then the screw rod is driven to rotate. And the screw rod is in threaded fit with the door core to drive the door core to translate and extrude the inner layer plate to expand the elastic frame to block the door crack. According to the fireproof door, fire disasters are judged through dual conditions of smoke concentration and temperature, false triggering is avoided, door crack blocking is accurately controlled through the characteristics of a memory alloy hoop, the fireproof performance is improved through a carbon fiber composite thermosetting structure, smoke and hot air are effectively prevented from being diffused, and personnel and property safety is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of fire doors, and in particular to a carbon fiber composite thermosetting fire door, and more particularly to a unique door gap sealing mechanism of the fire door to achieve precise fire response and effective door gap sealing. Background Art

[0002] Fire doors are important fire safety facilities in all types of buildings. Their function is to prevent the spread of fire and smoke when a fire occurs, buying time for evacuation and firefighting and rescue. However, existing fire door technology has some shortcomings.

[0003] On the one hand, some fire doors are prone to false triggering of the sealing mechanism due to various non-fire factors. For example, electronic components within the fire door may generate abnormal heat due to aging or short circuits, or smoke may be generated by someone smoking at the door. These situations can cause the sealing mechanism to be mistakenly activated. These false triggerings not only affect the normal use of the fire door in non-fire situations but can also cause unnecessary waste of resources and panic.

[0004] On the other hand, existing fire doors struggle to accurately activate and seal the door gaps only when a fire breaks out, i.e., when there is a large amount of smoke and the ambient temperature rises rapidly. This results in an inability to effectively prevent the smoke and heat generated by the fire from spreading through the door gaps, posing a potential threat to the safety of people and property.

[0005] Therefore, it is of great practical significance to develop a fire door that can accurately identify fire conditions and reliably seal door gaps while avoiding false triggering by non-fire factors. Summary of the Invention

[0006] The purpose of the present invention is to provide a carbon fiber composite thermosetting fire door, which has a unique door gap sealing mechanism. When a large amount of smoke generated by a fire is detected and the ambient temperature reaches a certain value, the door gap sealing is automatically triggered, effectively preventing smoke and heat from diffusing through the door gap, while avoiding false triggering due to non-fire factors, thereby improving the stability and reliability of the fire door.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a carbon fiber composite material thermosetting fireproof door, comprising an outer layer panel and an inner layer panel both made of thermosetting carbon fiber composite materials, a door core is provided between the outer layer panel and the inner layer panel, the door core comprises a door frame and a skeleton arranged in the door frame, a plurality of hollow portions are provided on the skeleton, and each of the hollow portions is filled with PU filling.

[0008] Preferably, the outer plate is provided with a smoke sensor mechanism, a microcontroller and a motor electrically connected to each other, a driving gear is provided on the power output end of the motor, and a driven gear is rotatably provided on the outer plate, the driven gear is meshed with the driving gear, a mounting tube is coaxially provided on the driven gear, a memory alloy hoop is fixedly embedded in the mounting tube, the memory alloy hoop has a rigid polygonal tubular structure in the austenitic state, a polygonal column is further inserted into the mounting tube, the memory alloy hoop is sleeved on the polygonal column, and a screw is coaxially provided at one end of the polygonal column away from its plug-in end; The door core is connected to the outer plate in a movably socket-type manner, a screw hole is provided on the door core, the screw rod passes through the screw hole and the two are threadedly matched; The inner layer plate is connected to the door core via an elastic frame, and the inner layer plate is rotationally connected to the screw rod via a positioning tube.

[0009] Preferably, the outer layer plate and the door core are respectively provided with a socket frame and a plug-in frame for socket-spigot fitting.

[0010] Preferably, it further comprises an alarm mechanism and a motion sensing mechanism electrically connected to each other, wherein the motion sensing mechanism is used to sense the rotation of the driven gear.

[0011] Preferably, the thermosetting carbon fiber composite material constituting the outer layer plate and the inner layer plate is specifically a composite material with a thermosetting resin as a matrix and carbon fibers as a reinforcement.

[0012] Preferably, the gaps between the outer panel, the door core and the inner panel are all filled with inert gas.

[0013] Preferably, the material of the memory alloy hoop is nickel-titanium-based shape memory alloy.

[0014] Preferably, a heating unit is provided in the installation tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The fire door of this invention offers multiple advantages, including high structural strength, excellent thermal insulation and flame retardancy, and light weight. Specifically, both the outer and inner panels are made of carbon fiber composite materials, the internal core is filled with PU material, and the interlayer gaps are filled with inert gas. This overall enhances the fire door's resistance to high temperatures and impacts, effectively blocking the spread of heat and flames and enhancing fire isolation. Furthermore, the fire door exhibits excellent stability and toughness, maintaining structural integrity even in extreme environments, extending escape and rescue time and significantly improving the safety of people and property.

[0016] This invention achieves precise identification of fire conditions through the ingenious combination of a smoke sensor and a memory alloy hoop. The door gap sealing mechanism is triggered only when the smoke concentration reaches a set threshold and the ambient temperature rises to a level that causes the memory alloy hoop to transition from a martensite state to an austenite state. Under this dual-conditional judgment, the fire door can accurately detect the occurrence of a fire and promptly activate the door gap sealing function. After the elastic frame expands outward, it fits tightly against the door frame, effectively preventing smoke and heat generated by the fire from spreading through the door gap. This buys valuable time for personnel evacuation and firefighting, significantly improving the fire door's fire protection performance.

[0017] The characteristics of the memory alloy hoop are the key to reducing the risk of false triggering in the present invention. At room temperature, the memory alloy hoop is in a flexible martensitic state and cannot grab the polygonal prism and drive it to rotate. Even if the smoke sensor detects smoke and outputs an electrical signal due to non-fire factors (such as someone smoking at the door), the microcontroller controls the motor to start. However, because the memory alloy hoop is in a flexible state, the rotation of the mounting tube cannot drive the polygonal prism and the screw to rotate, and the elastic frame will not bulge. Similarly, when the temperature rises due to a failure of the electronic components inside the fire door, but the smoke concentration does not reach the set threshold, the memory alloy hoop will not be transformed into a rigid state, and the door gap sealing mechanism will not be triggered. This control method based on dual conditions effectively avoids false triggering due to non-fire factors and improves the stability and reliability of the use of fire doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the fire door in Example 1 of the present invention; Figure 2 This is a schematic diagram of the overall structure of the fire door in Example 2 of the present invention; Figure 3 This is a schematic diagram of the inner structure of the outer panel of the fire door in Example 2 of the present invention; Figure 4 Detailed diagram of the internal structure of the installation pipe of the fire door in Example 2 of the present invention; Figure 5 Detailed structural diagram of the door core of the fire door in Example 2 of the present invention; Figure 6 Detailed structural diagram of the inner panel of the fire door in Example 2 of the present invention; Figure 7 Detailed structural diagram of the elastic frame of the fire door in Example 2 of the present invention; Figure 8 This is a schematic overall cross-sectional view of the fire door in Example 2 of the present invention.

[0019] In the figure: 1. Outer plate; 101. Socket frame; 102. Smoke sensor mechanism; 103. Alarm mechanism; 104. Microcontroller; 105. Motor; 106. Driving gear; 107. Driven gear; 108. Mounting tube; 1081. Memory alloy hoop; 1082. Polygonal prism; 1083. Screw; 109. Movable sensing mechanism; 2. Door core; 201. Door frame; 202. Skeleton; 203. PU filling; 204. Connecting frame; 205. Screw hole; 3. Inner plate; 301. Positioning tube; 4. Elastic frame. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] Example 1 See also Figure 1This embodiment provides a carbon fiber composite thermoset fire door. Both the outer and inner panels are made of high-strength carbon fiber composite material. This material possesses excellent mechanical properties and heat resistance, maintaining overall structural stability in extreme environments such as high temperatures and flame impacts, preventing the door from softening, deforming, or breaking. The core of the fire door consists of a skeleton with multiple hollow structures, each filled with PU material. This structural design reduces overall weight while improving thermal insulation and cushioning properties, effectively preventing fire and heat from transmitting to the other side of the door.

[0025] This fire door achieves strong overall impact resistance through the strategic coordination of its components. In the event of a sudden fire, even when subjected to external forces such as structural deformation and pressure wave shock, the fire door maintains its deformed seal, continuing to isolate smoke, insulate heat, and prevent fire. This provides more time for evacuation and a safer environment for subsequent firefighting and rescue efforts. Therefore, this embodiment, through the use of high-performance carbon fiber composite materials and the rational design of the door core structure and interlayer layout, effectively enhances the safety and reliability of the fire door in fire conditions.

[0026] Preferably, the thermosetting carbon fiber composite material that constitutes the outer panel 1 and inner panel 3 is specifically a composite material with a thermosetting resin as the matrix and carbon fibers as the reinforcement, wherein the thermosetting resin is selected from phenolic resin and the carbon fibers are selected from T700-grade high-strength carbon fibers, with the volume fraction of the carbon fibers in the composite material being 60%-65%. T700-grade high-strength carbon fibers have extremely high tensile strength and modulus. When used as reinforcement in the composite material, when its volume fraction is controlled at 60%-65%, it can fully utilize the high-strength properties of carbon fibers. This high-strength carbon fiber composite material enables the outer panel 1 and inner panel 3 of the fire door to withstand large external forces. In the event of a fire, the surrounding environment may generate huge impact forces due to factors such as high temperature and explosion. Fire doors made of this composite material can withstand these external forces, maintain structural integrity, and prevent the door body from deformation or damage in a fire, thereby continuously playing its role in fire protection and heat insulation, providing reliable protection for personnel evacuation and fire rescue. In addition, the thermosetting phenolic resin matrix and the carbon fiber reinforcement have good interfacial bonding properties, which enables the composite material to effectively transfer stress when subjected to external forces. In extreme environments such as fires, fire doors may be subject to a variety of complex external forces, such as squeezing pressure caused by structural deformation. The excellent toughness of fire doors prevents them from easily fracturing under these external forces. Instead, they absorb and dissipate energy through their own deformation, further improving their safety and reliability.

[0027] Preferably, the gaps between the outer panels 1, the door core 2, and the inner panels 3 are all filled with an inert gas. Inert gases (such as argon and xenon) have low thermal conductivity and are less effective at transferring heat than air. When a fire door is exposed to a fire, high temperatures will attempt to conduct through the door to the other side. The inert gas filled between the panels effectively hinders heat transfer, reducing heat conduction efficiency and significantly improving the thermal insulation performance of the fire door. This helps maintain a relatively low temperature inside the fire door, providing a safer refuge for occupants and minimizing damage to objects and personnel caused by high temperatures. Furthermore, filling the gaps between the panels with inert gas reduces the amount of air trapped between them, thereby lowering the oxygen concentration. When a fire spreads near the fire door, the oxygen concentration is diluted, slowing the flames or even extinguishing them. This effectively prevents the fire from spreading further through the door, enhancing the fireproofing performance of the fire door and increasing time for evacuation and firefighting efforts.

[0028] Example 2 See also Figure 2-8 This embodiment provides a carbon fiber composite thermosetting fireproof door. Unlike the embodiment 1, the outer plate 1 of this embodiment is provided with: The smoke sensor 102 is used to detect the smoke concentration in the environment and output a corresponding electrical signal; The microcontroller 104 is electrically connected to the smoke sensor mechanism 102 and is used to receive the electrical signal and determine whether the smoke concentration reaches a set threshold according to the electrical signal; The motor 105 is electrically connected to the microcontroller 104 and is used to start the motor 105 according to the control signal of the microcontroller 104 when the smoke concentration reaches a set threshold. A driving gear 106 is provided on the power output end of the motor 105; The driven gear 107 is rotatably mounted on the outer plate 1 and meshes with the driving gear 106. A mounting tube 108 is coaxially mounted on the driven gear 107. A memory alloy hoop 1081 is fixedly embedded in the mounting tube 108. The memory alloy hoop 1081 is a polygonal tubular structure in the austenitic state. A polygonal column 1082 is further inserted into the mounting tube 108. The memory alloy hoop 1081 is sleeved on the polygonal column 1082. The polygonal column 1082 is seamlessly and rigidly adapted to the memory alloy hoop 1081 in the austenitic state. A screw 1083 is coaxially mounted on the end of the polygonal column 1082 away from its plug-in end. The outer panel 1 serves as the basic supporting structure of the fire door, providing a stable installation platform for other components, ensuring the firmness and stability of the entire fire door structure, and providing protection for the normal operation of each component.

[0029] The door core 2 is connected to the outer plate 1 by a movably socket-type connection. A screw hole 205 is provided on the door core 2. The screw 1083 passes through the screw hole 205 and the two are threadedly matched. When the screw 1083 rotates, the door core 2 will move in a direction away from or close to the outer plate 1. The inner panel 3 and the door core 2 are connected through an elastic frame 4. The elastic frame 4 is distributed in a U-shaped shape at the edge between the inner panel 3 and the door core 2. The inner panel 3 is rotatably connected to the screw 1083 through the positioning tube 301. When the door core 2 is squeezed toward the inner panel 3, the elastic frame 4 between the two will expand to the surrounding areas, thereby activating the door gap sealing mechanism.

[0030] Among the aforementioned components, the smoke sensor 102 accurately and in real time detects ambient smoke concentration, providing critical data for the microcontroller 104's decision-making. It serves as one of the key triggering conditions for activating the door gap sealing mechanism. Its high-precision detection capability helps improve the fire door's speed and accuracy in responding to fires. The microcontroller 104 receives the electrical signal from the smoke sensor 102 and makes a precise judgment based on the result. This intelligently controls the activation of the motor 105, achieving intelligent control of the fire door's gap sealing mechanism, improving control accuracy and reliability and avoiding false triggering due to misjudgments. As the power source, the motor 105 activates promptly based on the control signal from the microcontroller 104, providing stable power for subsequent gear transmission and component movement, ensuring the smooth operation of the entire door gap sealing process. The driving gear 106 is tightly connected to the power output of the motor 105, efficiently transmitting the motor's rotational power to the driven gear 107. It is a key component in power transmission, and its excellent transmission performance ensures stable and accurate power transmission. The driven gear 107 precisely meshes with the driving gear 106 and rotates stably under the drive of the driving gear 106, thereby driving the mounting tube 108 to rotate, achieving further power transmission. Its good coordination with the driving gear 106 ensures smooth power transmission. The mounting tube 108 is coaxially arranged on the driven gear 107 and rotates with the driven gear 107, providing a reliable installation space for the memory alloy hoop 1081 and the polygonal prism 1082, and driving them to rotate. Its stable rotation performance ensures the accuracy of the movement of subsequent components. The memory alloy hoop 1081 is in a flexible martensitic state at room temperature. When the ambient temperature rises to a certain value, it transforms into a rigid austenitic state. This unique property enables the memory alloy hoop 1081 to decide whether to grasp the polygonal prism 1082 and drive its rotation based on changes in ambient temperature. It is the core component for achieving precise control of the door gap sealing mechanism, effectively avoiding false triggering caused by non-fire factors. The polygonal column 1082 seamlessly fits with the memory alloy hoop 1081 in its austenitic state. When the memory alloy hoop 1081 is in its rigid state, it can be tightly clamped by the memory alloy hoop 1081 and rotate synchronously, thereby driving the screw 1083 to rotate. It is a key link in power transmission and component linkage. Its good cooperation with the memory alloy hoop 1081 ensures the effectiveness of power transmission. The screw 1083 is coaxially arranged with the polygonal column 1082 and rotates as the polygonal column 1082 rotates. By threading with the screw hole 205 on the door core 2, the door core 2 produces smooth translational motion, providing precise power for the expansion of the elastic frame 4. The threaded cooperation method ensures the stability and controllability of the translation of the door core 2. The door core 2 is movably connected to the outer panel 1 by socket connection, and can be translated in a direction away from or close to the outer panel 1 by the rotation of the screw 1083. During the translation process, the elastic frame 4 is evenly squeezed to expand and block the door gap. Its reasonable movable connection method ensures the expansion effect of the elastic frame 4.The inner panel 3 and the door core 2 are connected via an elastic frame 4, which is rotatably connected to the screw 1083 via a positioning tube 301. This provides a stable mounting base for the elastic frame 4 and ensures its stability during expansion. Its rational connection to the door core 2 helps improve the reliability of sealing the door gap. The elastic frame 4 is distributed in a square shape at the edge between the inner panel 3 and the door core 2. Under the pressure of the door core 2, it expands evenly in all directions, tightly fitting the door frame, effectively sealing the door gap and preventing the spread of smoke and heat. It is a key component for fire doors to achieve their fireproofing functions, and its rational shape and distribution ensure the sealing effect.

[0031] During use, the smoke sensor 102, mounted on the outer panel 1 of the fire door, monitors the smoke concentration in real time and converts it into a corresponding electrical signal. A microcontroller 104, electrically connected to the smoke sensor 102, receives the signal and makes a decision based on a preset algorithm and threshold. Only when the smoke concentration reaches the threshold does the microcontroller 104 proceed with the subsequent control process. This effectively eliminates the possibility of false triggering caused by small amounts of smoke (e.g., someone smoking at the door).

[0032] When the microcontroller 104 determines that the smoke concentration has reached a set threshold, it sends a control command to the motor 105. The motor 105 is electrically connected to the microcontroller 104 and starts immediately after receiving the command. A driving gear 106 is provided on the power output end of the motor 105, and the driving gear 106 is engaged with a driven gear 107 that is rotatably arranged on the outer plate 1. After the motor 105 is started, the driving gear 106 begins to rotate, driving the driven gear 107 to rotate through gear meshing. The mounting tube 108 coaxially arranged on the driven gear 107 also rotates with it. This transmission process effectively transfers the rotational power of the motor 105 to the mounting tube 108, providing a power basis for subsequent component movement.

[0033] A memory alloy hoop 1081 is fixedly embedded in the mounting tube 108. At room temperature, the memory alloy hoop 1081 is in a martensite state and is flexible. At this time, it cannot effectively grasp the polygonal prism 1082. At the same time, a polygonal prism 1082 is inserted into the mounting tube 108, and the memory alloy hoop 1081 is sleeved on the polygonal prism 1082. The polygonal prism 1082 seamlessly fits the memory alloy hoop 1081 in the austenite state. Since the smoke temperature is high when a fire occurs, the temperature of the environment where the fire door is located will increase. When the ambient temperature rises to a certain value, the memory alloy hoop 1081 changes from the martensite state to the austenite state, and from the flexible state to the rigid state. At this time, the memory alloy hoop 1081 can tightly clamp the polygonal prism 1082, so that when the mounting tube 108 rotates, the polygonal prism 1082 will also rotate synchronously. This process cleverly utilizes the characteristics of the memory alloy hoop 1081. Only when the ambient temperature reaches a certain value can the memory alloy hoop 1081 grab the polygonal column 1082 and drive it to rotate, achieving precise control of the door gap sealing mechanism and avoiding false triggering due to the temperature not reaching the fire level.

[0034] A screw 1083 is coaxially disposed at the end of the polygonal column 1082, distal from its insertion end. Screw 1083 engages with a screw hole 205 in the door core 2. As the polygonal column 1082 rotates with the mounting tube 108, screw 1083 also rotates with it. Due to the threaded fit between screw 1083 and screw hole 205, as screw 1083 rotates, the door core 2 translates away from or toward the outer panel 1. This process converts rotational motion into linear motion, providing the motive force for the expansion of the elastic frame 4. Furthermore, the threaded fit ensures the smooth and accurate translation of the door core 2.

[0035] The inner panel 3 and the door core 2 are connected by an elastic frame 4, which is arranged in a square shape at the edge between the inner panel 3 and the door core 2. The inner panel 3 is rotatably connected to the screw 1083 via a positioning tube 301. When the door core 2 is pressed against the inner panel 3 by the screw 1083, the elastic frame 4 between the two is squeezed and expands outward. The expanded elastic frame 4 fits tightly against the door frame, effectively sealing the door gap and preventing smoke and heat from spreading through the gap, thereby improving the fire resistance of the fire door.

[0036] In summary, the present invention achieves accurate identification of fire conditions through the ingenious cooperation of the smoke sensing mechanism 102 and the memory alloy hoop 1081. The door gap sealing mechanism is triggered only when the smoke concentration reaches the set threshold and the ambient temperature rises to the point where the memory alloy hoop 1081 transforms from the martensite state to the austenite state. Under this dual condition judgment, the fire door can accurately judge the occurrence of a fire and activate the door gap sealing function in a timely manner. After the elastic frame 4 expands to the four sides, it fits tightly to the door frame, effectively preventing the smoke and heat generated by the fire from diffusing through the door gap, buying valuable time for personnel evacuation and fire fighting and rescue, and greatly improving the fire door's protective performance in fires.

[0037] The properties of the memory alloy hoop 1081 are key to reducing the risk of false triggering in this invention. At room temperature, the memory alloy hoop 1081 is in a flexible martensitic state, unable to grasp the polygonal prism 1082 and drive its rotation. Even if the smoke sensor 102 detects smoke due to non-fire factors (such as someone smoking at the door) and outputs an electrical signal, the microcontroller 104 controls the motor 105 to start. However, due to the flexible state of the memory alloy hoop 1081, the rotation of the mounting tube 108 cannot drive the polygonal prism 1082 and screw 1083, and the elastic frame 4 will not expand. Similarly, if the temperature rises due to a malfunction of the electronic components inside the fire door, but the smoke concentration does not reach the set threshold, the memory alloy hoop 1081 will not transform into a rigid state, and the door gap sealing mechanism will not be triggered. This dual-condition control method effectively avoids false triggering due to non-fire factors and improves the stability and reliability of the fire door.

[0038] Preferably, Figure 3 and Figure 5 As shown, the outer panel 1 and the door core 2 are respectively provided with a socket frame 101 and an insertion frame 204 that fit together. In the door gap sealing mechanism, the door core 2 needs to translate in the direction away from or close to the outer panel 1. The matching structure of the socket frame 101 and the insertion frame 204 provides a good guiding effect for the translation movement of the door core 2. It can limit the movement direction of the door core 2 during the translation process, ensuring that the door core 2 can only move linearly along the predetermined direction, so that the screw 1083 and the screw hole 205 on the door core 2 can cooperate more smoothly, ensuring the stability and accuracy of the translation of the door core 2. This smooth and accurate translation movement can provide precise power for the expansion of the elastic frame 4, so that the elastic frame 4 can expand evenly and tightly, thereby achieving effective sealing of the door gap. And because the socket-fit structure enhances the connection stability between the outer panel 1 and the door core 2, during the door gap sealing process, the door core 2 can more stably squeeze the elastic frame 4, so that the elastic frame 4 can better maintain its shape and position after expansion and fit closely to the door frame, which helps to improve the reliability of door gap sealing.

[0039] Preferably, Figure 2-3As shown, the system also includes an electrically connected alarm mechanism 103 and a motion sensing mechanism 109. The motion sensing mechanism 109 is used to sense the rotation of the driven gear 107. When the smoke sensor 102 is triggered but the temperature has not yet reached the point where the memory alloy hoop 1081 transforms into an austenitic state (for example, when someone is smoking outside the fire door or there is a minor fire), the motor 105 starts and drives the driven gear 107 to rotate. Once the motion sensing mechanism 109 senses the movement of the driven gear 107, it triggers the alarm mechanism 103, issuing a timely alarm signal. This allows personnel to be alerted to fire hazards before they reach the point where the door gap is sealed, facilitating early detection and increasing response time.

[0040] Preferably, the material of the memory alloy hoop 1081 is nickel-titanium-based shape memory alloy. Nickel-titanium-based shape memory alloy has a unique temperature memory effect, and its phase transition temperature can be precisely adjusted according to specific needs. In carbon fiber composite thermosetting fire doors, by reasonably selecting the component ratio and heat treatment process of nickel-titanium-based shape memory alloy, the critical temperature at which the memory alloy hoop 1081 transforms from a martensite flexible state to an austenite rigid state can be accurately set. When the ambient temperature reaches the high temperature threshold during a fire, the memory alloy hoop 1081 can quickly and accurately complete the phase change, thereby promptly grabbing the polygonal prism 1082 and driving it to rotate, activating the door gap sealing mechanism. This precise temperature response characteristic ensures that the fire door can respond in a timely manner when a fire occurs, effectively preventing the spread of smoke and heat, and buying valuable time for personnel evacuation and fire fighting and rescue.

[0041] Preferably, a heating unit is provided within the mounting tube 108 to artificially raise the temperature of the environment surrounding the memory alloy hoop 1081, thereby artificially transforming the memory alloy hoop 1081 from a flexible martensite state to a rigid austenite state. In some special scenarios, such as functional testing of fire doors, it is necessary to simulate the process of the memory alloy hoop 1081 transforming from a martensite state to an austenite state during a fire to verify the proper operation of the door gap sealing mechanism. In this case, the heating unit is precisely controlled by an external control circuit to artificially raise the temperature of the environment surrounding the memory alloy hoop 1081, transforming it into an austenite rigid state, thereby triggering the door gap sealing mechanism. This eliminates the need to actually create a fire environment, greatly improving the convenience and safety of the test. Furthermore, when fire doors are installed in locations with extremely high fire protection requirements and requiring regular proactive maintenance and inspection, maintenance personnel can activate the heating unit at any time through an external control circuit to check the linkage of components such as the memory alloy hoop 1081, the polygonal prism 1082, the screw 1083, the door core 2, and the elastic frame 4. This ensures that the entire door gap sealing system is in good working condition, promptly identifies and resolves potential problems, and enhances the controllability and reliability of the system. Furthermore, while the present invention reduces the risk of false triggering through dual conditional judgment of the smoke sensor mechanism 102 and the memory alloy hoop 1081, in certain extreme cases, the automatic triggering mechanism may fail. For example, the smoke sensor mechanism 102 may malfunction due to long-term use, resulting in an inability to accurately detect smoke concentration; or the memory alloy hoop 1081 may experience a phase transition temperature shift due to material aging, environmental factors, and other factors, making it unable to complete the state transition at normal fire temperatures. In these cases, the presence of the heating unit becomes an effective remedial measure. Maintenance personnel can start the heating unit through an external control circuit, forcing the memory alloy hoop 1081 to transform into an austenitic rigid state and start the door gap sealing mechanism, thereby compensating for the shortcomings of the automatic triggering mechanism to a certain extent and improving the safety and reliability of the fire door in various complex situations.

[0042] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A carbon fiber composite thermosetting fire door, characterized by: The invention comprises an outer plate (1) and an inner plate (3) both made of thermosetting carbon fiber composite materials, a door core (2) is provided between the outer plate (1) and the inner plate (3), the door core (2) comprises a door frame (201) and a skeleton (202) provided in the door frame (201), a plurality of hollow portions are provided on the skeleton (202), and each of the hollow portions is filled with PU filler.

2. The carbon fiber composite thermosetting fireproof door according to claim 1, characterized in that: The outer plate (1) is provided with a smoke sensor mechanism (102), a microcontroller (104) and a motor (105) which are electrically connected to each other. A driving gear (106) is provided on the power output end of the motor (105). A driven gear (107) is also rotatably provided on the outer plate (1). The driven gear (107) is meshed with the driving gear (106). A mounting tube (108) is coaxially provided on the driven gear (107). A memory alloy hoop (1081) is fixedly embedded in the mounting tube (108). The memory alloy hoop (1081) is a rigid polyhedral tubular structure in an austenitic state. A polyhedral column (1082) is also inserted into the mounting tube (108). The memory alloy hoop (1081) is sleeved on the polyhedral column (1082). A screw (1083) is coaxially provided at one end of the polyhedral column (1082) away from its plug-in end. The door core (2) is movably connected to the outer plate (1) by means of a socket; a screw hole (205) is provided on the door core (2); the screw rod (1083) passes through the screw hole (205) and the two are threadedly matched; The inner plate (3) is connected to the door core (2) via an elastic frame (4), and the inner plate (3) is rotationally connected to the screw (1083) via a positioning tube (301).

3. The carbon fiber composite thermosetting fireproof door according to claim 2, characterized in that: The outer layer plate (1) and the door core (2) are respectively provided with a socket frame (101) and a plug frame (204) for socket-spigot fitting.

4. The carbon fiber composite thermosetting fireproof door according to claim 2, characterized in that: It also includes an alarm mechanism (103) and a motion sensing mechanism (109) electrically connected to each other, wherein the motion sensing mechanism (109) is used to sense the rotation of the driven gear (107).

5. The carbon fiber composite thermosetting fireproof door according to claim 1, characterized in that: The thermosetting carbon fiber composite material constituting the outer layer plate (1) and the inner layer plate (3) is specifically a composite material with a thermosetting resin as a matrix and carbon fibers as a reinforcement.

6. The carbon fiber composite thermosetting fireproof door according to claim 1, characterized in that: The gaps between the outer plate (1), the door core (2) and the inner plate (3) are all filled with inert gas.

7. The carbon fiber composite thermosetting fireproof door according to claim 2, characterized in that: The material of the memory alloy hoop (1081) is nickel-titanium-based shape memory alloy.

8. The carbon fiber composite thermosetting fireproof door according to claim 2, characterized in that: A heating unit is provided in the installation tube (108).

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