Heat insulation type fireproof door and window sealing structure
By integrating sealing, cooling, and smoke extraction units, fire-resistant doors and windows can actively respond during a fire, solving the problems of sealing failure and insufficient heat insulation, and improving the heat insulation performance and safety of fire-resistant doors and windows.
Patent Information
- Application Number
- CN202512037603.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-10
AI Technical Summary
Existing fireproof doors and windows fail to seal properly during a fire, have insufficient thermal insulation performance, and are ineffective in controlling the spread of smoke, thus affecting personnel safety and building structure.
The first barrier frame in the sealing unit is engaged with the sealing groove, and active sealing is achieved through the inflation and deflation operation of the control unit; combined with the cold air injection and exhaust of the cooling unit, a multi-stage heat dissipation mechanism is formed; the smoke sensor monitors in real time and triggers the sealing action; the smoke exhaust unit reduces smoke diffusion through an independent smoke exhaust chamber and a filter plate.
Maintaining a tight seal at high temperatures effectively prevents the spread of smoke and fire, enhances thermal insulation performance, improves the response speed and safety of fire-resistant doors and windows, and provides a clean evacuation environment.
Smart Images
Figure CN121497192A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of door and window sealing structure technology, and more specifically, to a heat-insulating and fireproof door and window sealing structure. Background Technology
[0002] With the acceleration of urbanization and the prevalence of high-rise buildings, fire safety in buildings has received increasing attention. Fire-resistant doors and windows, as a crucial component of building fire safety, effectively prevent the spread of fire during an outbreak, buying valuable time for evacuation and fire rescue. However, existing fire-resistant doors and windows often have relatively simple sealing structures, such as relying solely on rubber sealing strips or inflatable fire-resistant sealing strips to achieve a basic sealing effect. Under normal temperature conditions, these sealing strips can provide a certain degree of sound insulation, heat insulation, and airtightness.
[0003] However, during a fire, the high temperatures rapidly cause rubber sealing strips to age, melt, or fail, significantly reducing or even completely eliminating their sealing performance. Once the seal fails, toxic fumes and high-temperature flames from the fire can quickly seep into unaffected areas through gaps in doors and windows, posing a serious threat to lives and property. Simultaneously, the large-scale leakage of smoke can impair breathing, reduce visibility, and severely hinder evacuation. Furthermore, the structure or materials of doors and windows alone are insufficient to effectively block heat transfer under prolonged high temperatures, causing the temperature on the unexposed side of the doors and windows to rise rapidly, affecting building structural safety and potentially igniting flammable materials nearby, leading to a secondary fire. Summary of the Invention
[0004] This invention provides a heat-insulating fireproof door and window sealing structure, which solves the technical problems of existing fireproof doors and windows failing to seal during a fire, having insufficient heat insulation performance, and being ineffective in controlling the spread of smoke.
[0005] This invention provides a heat-insulating and fire-resistant door and window sealing structure, comprising: The main body of the door and window includes a support plate, a door opening is provided on the support plate, and an inner door frame and an outer door frame are provided inside the door opening. A door panel is rotatably connected inside the outer door frame through a pivot, and a rubber gasket is provided on the side of the outer door frame that contacts the door panel. The sealing unit includes a rectangular annular groove formed on the side of the door panel near the inner door frame, a first barrier frame slidably connected inside the rectangular annular groove, and a second barrier frame installed on the inner door frame. The second barrier frame has a sealing groove inside, and the first barrier frame is engaged with the sealing groove. The control unit inflates and deflates the air chamber and controls the first barrier frame to extend and retract within the rectangular annular groove, thereby engaging the first barrier frame with the sealing groove.
[0006] As a further optimization of the present invention, multiple air chambers are formed in the rectangular annular groove, and a sliding shaft is slidably connected inside the air chamber. The sliding shaft is fixedly connected to the first barrier frame, and a spring is provided outside the sliding shaft.
[0007] As a further optimization of the present invention, the control unit includes a control component disposed inside the door panel and a pipeline system connected to the control component. The control component inflates and deflates the pipeline system, thereby controlling the inflation and deflation of the air chamber.
[0008] As a further optimization of the present invention, the control component includes an inflatable sleeve installed inside the door panel. Both ends of the inflatable sleeve are equipped with sealing blocks, and a piston is slidably connected inside the sealing blocks. A connecting sleeve is installed at the end of the sealing blocks away from the inflatable sleeve, and a heat-conducting block is installed at the end of the connecting sleeve away from the sealing blocks. A shape memory metal is disposed between the piston and the heat-conducting block.
[0009] As a further optimization of the present invention, openings are provided on both sides of the outside of the door panel, and heat-conducting plates are provided in the openings. The two ends of the two sets of heat-conducting plates are respectively fixedly connected to heat-conducting blocks.
[0010] As a further optimization of the present invention, a smoke exhaust unit is provided on the top of the support plate. The smoke exhaust unit includes a smoke exhaust chamber opened on the top of the support plate. A partition is installed inside the smoke exhaust chamber, which divides the smoke exhaust chamber into two independent smoke exhaust chambers. A smoking channel is opened on the side of the two smoke exhaust chambers away from the partition. A guide hood is installed on the top of the two smoke exhaust chambers, and a smoke exhaust pipe is installed on the guide hood.
[0011] As a further optimization of the present invention, a cooling unit is provided between the inner door frame and the outer door frame and the door opening. The cooling unit includes two sets of connecting air ducts installed on the support plate, a cooling chamber disposed between the inner door frame and the outer door frame and the door opening, and a columnar chamber opened inside the support plate. The connecting air ducts and the cooling chamber are connected through the columnar chamber. One set of the two sets of connecting air ducts is used to inject cold air into the interior of the cooling chamber, and the other set is used to exhaust the air inside the cooling chamber.
[0012] As a further optimization of the present invention, a set of columnar chambers are provided with cooling pipes, and the cooling pipes are equipped with a first air outlet and a second air outlet. The cooling pipes pass through the columnar chambers and are fixedly connected to a corresponding set of connecting air ducts. The connecting air ducts are equipped with connecting fins, and the connecting fins are equipped with cooling fans.
[0013] As a further optimization of the present invention, a cooling fin is installed on the side of the connecting fin away from the cooling fan.
[0014] As a further optimization of the present invention, one side of the door panel faces the stairwell or public corridor, and the other side faces the entrance. Smoke sensors are installed on both sides of the door panel for detecting smoke at the entrance, stairwell, or public corridor. A controller is also installed on the door panel. When the smoke sensor detects that the smoke concentration exceeds a set threshold, it sends a signal to the controller, which then processes the smoke concentration alarm signal.
[0015] The beneficial effects of this invention are as follows: 1. This invention, through the engaging connection between the first barrier frame and the sealing groove in the sealing unit, upon receiving a fire signal, can extend and retract the first barrier frame and tightly engage it through the inflation and deflation operations of the control unit, forming an active and tight sealing structure. This structure can maintain sealing performance at high temperatures, effectively blocking the spread of smoke and fire. Furthermore, the cooling unit inside the door frame can actively inject cold air and exhaust hot air, maintaining the low temperature of the door frame and the supporting plate through a multi-stage heat dissipation mechanism, significantly improving the overall heat insulation performance, delaying the spread of fire, and protecting the safety of the unexposed surface.
[0016] 2. The smoke sensor can monitor the smoke concentration on both sides of the door and window in real time. Once the threshold is exceeded, the controller will immediately receive and process the alarm signal and link with the control unit to automatically trigger the activation of the sealing unit, so as to achieve timely and fast sealing action without manual intervention, which greatly improves the response speed and safety of fireproof doors and windows.
[0017] 3. The smoke exhaust unit uses partitions to divide the smoke exhaust chamber into independent smoke exhaust rooms, which are connected to external fans through guide hoods and smoke exhaust pipes, effectively expelling smoke from the corridors during a fire. More importantly, the filter plates and filter outlets installed in the smoke exhaust passage can perform preliminary filtration of smoke while it is being exhausted, reducing the spread of harmful substances and providing a fresher environment for evacuation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional exploded structure diagram of the present invention; Figure 4 This is a partial three-dimensional exploded structure schematic diagram of the present invention; Figure 5 This is the invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a partial three-dimensional structural diagram of the control components and piping system of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the present invention; Figure 8 This is the invention Figure 7 Enlarged view of the structure at point B in the middle; Figure 9 This is a partial three-dimensional structural diagram of the smoke exhaust unit of the present invention; Figure 10 This is a partial cross-sectional view of the cooling unit of the present invention; Figure 11 This is a partial cross-sectional perspective view of the cooling unit of the present invention. Figure 12 This is an exploded three-dimensional structural diagram of the connecting fins, connector, cooling fan, and cooling chip of the present invention.
[0019] In the diagram: 100, Door / window body; 110, Support plate; 120, Inner door frame; 130, Outer door frame; 140, Door panel; 150, Door closer; 160, Rubber gasket; 200, Sealing unit; 210, First barrier frame; 220, Second barrier frame; 230, Air chamber; 240, Sliding shaft; 250, Spring; 260, Sealing groove; 270, Sealing ring; 300, Control unit; 310, Control component; 311, Inflatable sleeve; 312, Sealing block; 313, Piston; 314, Connecting sleeve; 315, Heat-conducting block; 3 16. Shape memory metal; 317. Heat-conducting plate; 320. Piping system; 400. Smoke exhaust unit; 410. Smoke exhaust chamber; 420. Partition; 430. Filter plate; 440. Filter port; 450. Draft hood; 460. Smoke exhaust pipe; 500. Cooling unit; 510. Connecting duct; 520. Cooling chamber; 530. Cooling pipe; 540. First air outlet; 550. Second air outlet; 560. Connecting fins; 570. Connecting ring; 580. Cooling fan; 590. Cooling element; 600. Smoke sensor; 700. Controller. Detailed Implementation
[0020] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.
[0021] According to the appendix Figure 1 To be continued Figure 3 and attached Figure 8 As shown, this invention provides a heat-insulating fireproof door and window sealing structure, which solves the problems of existing fireproof doors and windows such as sealing failure, insufficient heat insulation performance, and ineffective control of smoke spread during a fire. By integrating multiple functional units, it achieves active response, efficient heat insulation, effective smoke exhaust, and good sealing and heat insulation effects for fireproof doors and windows in fire scenarios.
[0022] The fireproof door and window sealing structure of the present invention includes a door and window body 100, the door and window body 100 includes a support plate 110, the support plate 110 is provided with a door opening for installing a door frame and a door leaf, the door opening is provided with an inner door frame 120 and an outer door frame 130, both of which are fixedly connected to the support plate 110 to jointly form the installation frame of the door leaf 140.
[0023] A door panel 140 is rotatably connected to the interior of the outer door frame 130 via a pivot. The door panel 140 serves to block fire and smoke in the event of a fire. To ensure the automatic closing function of the door panel 140, a door closer 150 is also installed between the door panel 140 and the outer door frame 130. The main body of the door closer 150 is mounted on the door panel 140, while its movable end is mounted on the outer door frame 130, ensuring that the door panel 140 automatically returns to the closed position from any open state.
[0024] In order to provide basic sound insulation, heat insulation and air tightness in daily use, a rubber gasket 160 is provided on the side of the outer door frame 130 that contacts the door panel 140. The rubber gasket 160 is fixedly installed around the outer door frame 130. When the door panel 140 is closed, the rubber gasket 160 is compressed to form the first physical seal.
[0025] According to the appendix Figure 4 Appendix Figure 5 and attached Figure 8As shown, the core sealing function of this invention is achieved by the sealing unit 200. The sealing unit 200 includes a rectangular annular groove formed on the side of the door panel 140 near the inner door frame 120. The rectangular annular groove extends along the four edges of the door panel. A first barrier frame 210 is slidably connected inside the rectangular annular groove. The first barrier frame 210 is a key component for achieving active sealing. A second barrier frame 220 is installed on the inner door frame 120 at a position corresponding to the first barrier frame 210. The second barrier frame 220 has a sealing groove 260 inside. The shape of the sealing groove 260 is the same as that of the first barrier frame 210, ensuring that the two can fit tightly. When the first barrier frame 210 extends, it can engage with the sealing groove 260 to form a tight secondary seal, effectively preventing smoke and fire from spreading through the gap between the door panel 140 and the door frame.
[0026] In order to realize the telescopic movement of the first barrier frame 210 in the rectangular annular groove, multiple air chambers 230 are provided in the rectangular annular groove. A sliding shaft 240 is slidably connected inside the air chamber 230. The sliding shaft 240 is fixedly connected to the first barrier frame 210. A spring 250 is provided outside the sliding shaft 240. One end of the spring 250 is fixedly connected to the first barrier frame 210, and the other end is fixedly connected to the rectangular annular groove.
[0027] In the inactive state, the spring 250 may keep the first barrier frame 210 in the retracted position; when the air chamber 230 is filled with air, the air pressure pushes the sliding shaft 240 and the first barrier frame 210 outward to engage with the sealing groove 260.
[0028] When air is released from the air chamber 230, the spring 250 causes the first barrier frame 210 to contract. To further enhance the sealing effect, in a preferred embodiment, a sealing ring 270 is installed inside the sealing groove 260. The sealing ring 270 may be made of high-temperature resistant, intumescent fire-retardant material or elastic material, and provides a tighter seal when engaged with the first barrier frame 210.
[0029] According to the appendix Figure 4 Appendix Figure 6 and attached Figure 8 As shown, the control unit 300 is the core of the sealing unit 200 to actively operate. The control unit 300 controls the first barrier frame 210 to extend and retract within the rectangular annular groove by inflating and deflating the air chamber 230, thereby achieving the engaging connection between the first barrier frame 210 and the sealing groove 260. The control unit 300 includes a control component 310 disposed inside the door panel 140 and a pipeline system 320 connected to the control component 310. The control component 310 inflates and deflates the pipeline system 320, thereby controlling the inflation and deflation of the air chamber 230.
[0030] In a preferred embodiment, according to the appendixFigure 6 As shown, the control component 310 includes an inflation sleeve 311 installed inside the door panel 140, with sealing blocks 312 installed at both ends of the inflation sleeve 311. A piston 313 is slidably connected inside the sealing blocks 312. A connecting sleeve 314 is installed at the end of the sealing blocks 312 away from the inflation sleeve 311, and a heat-conducting block 315 is installed at the end of the connecting sleeve 314 away from the sealing blocks 312. A shape memory metal 316 is disposed between the piston 313 and the heat-conducting block 315. The shape memory metal 316 has the characteristic that it undergoes a phase change and deforms when a certain temperature is reached, thereby pushing the piston 313.
[0031] Specifically, the piston component 313 includes a piston rod slidably connected inside the sealing block 312 and piston blocks installed at both ends of the piston rod. The two ends of the shape memory metal 316 are connected to the piston blocks and the heat-conducting block 315, respectively. When a fire occurs and the temperature rises, the shape memory metal 316 deforms due to heat, pushing the piston component 313 to move. The movement of the piston component 313 can change the pressure inside the inflation sleeve 311, thereby controlling the inflation and deflation of the gas chamber 230.
[0032] To more effectively sense external temperature, openings are provided on both sides of the door panel 140, and heat-conducting plates 317 are installed inside the openings. The two ends of the two sets of heat-conducting plates 317 are fixedly connected to heat-conducting blocks 315 respectively. The heat-conducting plates 317 quickly transfer external heat to the heat-conducting blocks 315, and then the heat-conducting blocks 315 transfer it to the shape memory metal 316, ensuring that the shape memory metal 316 can respond to changes in external temperature in a timely manner.
[0033] The piping system 320 is used to transmit gas between the control component 310 and the air chamber 230. Multiple sets of air outlet pipes are installed on both sides of the inflation sleeve 311. The piping system 320 includes multiple main pipes and multiple branch pipes. Each set of air pipes has a main pipe, and multiple branch pipes are connected to the main pipes, which are then connected to the air chambers 230. One set of main pipes is individually connected to one set of air chambers 230. The piping system 320 facilitates the supply and exhaust of gas to and from multiple air chambers 230, enabling precise control of the first barrier frame 210.
[0034] According to the appendix Figure 7 Appendix Figure 8 and attached Figure 9 As shown, in order to prevent smoke from lingering in corridors or public areas, the present invention provides a smoke exhaust unit 400 on the top of the support plate 110. The smoke exhaust unit 400 includes a smoke exhaust chamber 410 opened on the top of the support plate 110. A partition 420 is installed inside the smoke exhaust chamber 410, which divides the smoke exhaust chamber 410 into two independent smoke exhaust chambers, thereby improving smoke exhaust efficiency and safety.
[0035] Smoking ducts are provided on the side of the two smoke exhaust chambers away from the partition 420 for sucking up smoke generated by the fire. The top of each smoke exhaust chamber is equipped with a deflector 450, which can effectively gather and guide the smoke. The deflector 450 is equipped with a smoke exhaust pipe 460, which is connected to an external fan to force the exhaust of smoke in the corridor.
[0036] In order to reduce harmful substances in the smoke, in a preferred embodiment, a filter plate 430 is installed in the smoking passage, and the filter plate 430 has multiple sets of filter ports 440, which can perform preliminary filtration of the inhaled smoke and reduce the harm of the smoke to the environment and personnel.
[0037] According to the appendix Figure 10 Appendix Figure 11 and attached Figure 12 As shown, to further improve the heat insulation performance of fireproof doors and windows, the present invention provides a cooling unit 500 between the inner door frame 120 and the outer door frame 130 and the door opening. The cooling unit 500 includes two sets of connecting air ducts 510 installed on the support plate 110, a cooling chamber 520 disposed between the inner door frame 120 and the outer door frame 130 and the door opening, and a columnar chamber opened inside the support plate 110. The connecting air ducts 510 and the cooling chamber 520 are connected through the columnar chamber. One set of connecting air ducts 510 is used to inject cold air into the interior of the cooling chamber 520, and the other set of connecting air ducts 510 is used to exhaust the air inside the cooling chamber 520, forming an air circulation cooling system.
[0038] In a preferred embodiment, according to the appendix Figure 11 As shown, a set of columnar chambers are equipped with cooling pipes 530, and the cooling pipes 530 are equipped with a first air outlet 540 and a second air outlet 550, which are used to evenly deliver cold air into different areas of the cooling chamber 520. The cooling pipes 530 pass through the columnar chambers and are fixedly connected to a corresponding set of connecting air ducts 510. The connecting air ducts 510 are equipped with connecting fins 560, and a cooling fan 580 is installed on the connecting fins 560. The cooling fan 580 forces air to flow through the connecting fins 560 to improve heat exchange efficiency. A cooling chip 590 is installed on the side of the connecting fins 560 away from the cooling fan 580. The cooling chip 590 can generate cold energy through semiconductor cooling, further reducing the temperature of the air entering the cooling chamber 520 and reducing the temperature of the connecting fins 560, so that when the cooling fan 580 is working, the cold air entering the cooling chamber 520 can be quickly cooled.
[0039] To optimize the heat dissipation of the connecting fin 560, in a preferred embodiment, the connecting fin 560 is cylindrical and has several fin gaps, increasing the heat dissipation area. A connecting ring 570 is also installed on the connecting fin 560. The connecting ring 570 provides support for the fin gaps, improving structural strength and also helping to guide airflow.
[0040] According to the appendix Figure 4 As shown, to achieve intelligent response of fireproof doors and windows, this invention installs smoke sensors 600 on both sides of the door panel 140. One side of the door panel 140 faces the stairwell or public corridor, and the other side faces the entrance. The smoke sensors 600 are used to detect smoke at the entrance, stairwell, or public corridor and monitor the smoke concentration in real time. A controller 700 is also installed on the door panel 140, and the controller 700 is electrically connected to the smoke sensor 600. The controller 700 is electrically connected to the heat-conducting block 315. When the smoke sensor 600 sends a signal to the controller 700, the controller 700 can electrically heat the heat-conducting block 315, causing the shape memory metal 316 to deform.
[0041] When the smoke sensor 600 detects that the smoke concentration exceeds a set threshold, it sends a signal to the controller 700. The controller 700 processes the smoke concentration alarm signal and, according to preset logic, links the control unit 300 to trigger the sealing unit 200, thereby engaging the first barrier frame 210 with the sealing groove 260. Simultaneously, it can also link the smoke exhaust unit 400 and the cooling unit 500, achieving a multi-functional integrated fire response. The controller 700 can also be connected to the building fire control center via wired or wireless means for remote monitoring and control.
[0042] Working principle: Under normal conditions, the door panel 140 forms a basic seal with the outer door frame 130 through the rubber gasket 160, providing sound insulation and heat preservation effects.
[0043] When a fire occurs, the smoke sensors 600 on both sides of the door panel 140 detect that the smoke concentration exceeds the standard and send an alarm signal to the controller 700. The controller 700 receives and processes the signal and then issues a command to the control unit 300. The control component 310 in the control unit 300 inflates the air chamber 230 of the sealing unit 200 through the pipeline system 320, so that the first barrier frame 210 extends outward under the action of air pressure, overcoming the elastic force of the spring 250, and tightly engages with the sealing groove 260 of the second barrier frame 220 and its internal sealing ring 270 to form a tight fireproof seal.
[0044] Meanwhile, the control unit 300 can also start the smoke exhaust unit 400 and the cooling unit 500 according to the instructions of the controller 700. The smoke exhaust unit 400 draws the smoke from the smoke exhaust channel through the smoke exhaust fan, filters it through the filter plate 430, and then discharges it outdoors through the smoke exhaust pipe 460.
[0045] The cooling unit 500 activates the cooling chip 590 and the cooling fan 580 to generate cold air. The cold air is injected into the cooling chamber 520 through the connecting duct 510 and the columnar chamber to cool the door frame and the load-bearing plate 110, and to exhaust the hot air, thereby keeping the temperature of the fireproof door and window's unexposed surface within a safe range.
[0046] Furthermore, when a fire breaks out on either side of the fire door, if the smoke does not reach the required concentration, the heat-conducting plate 317 in the control component 310 will quickly transfer external heat to the heat-conducting block 315, thereby causing the shape memory metal 316 to deform due to heat, directly or indirectly pushing the piston 313 to work, further ensuring the reliable operation of the sealing unit 200 at high temperatures, forming a multiple triggering mechanism, and improving the reliability and safety of the system.
[0047] The embodiments of this specific implementation have been described above, but this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this embodiment, all of which are within the protection scope of this embodiment.
Claims
1. A heat-insulating and fire-resistant door and window sealing structure, characterized in that, include: The main body of the door and window includes a support plate, a door opening is provided on the support plate, and an inner door frame and an outer door frame are provided inside the door opening. A door panel is rotatably connected inside the outer door frame through a pivot, and a rubber gasket is provided on the side of the outer door frame that contacts the door panel. The sealing unit includes a rectangular annular groove formed on the side of the door panel near the inner door frame, a first barrier frame slidably connected inside the rectangular annular groove, and a second barrier frame installed on the inner door frame. The second barrier frame has a sealing groove inside, and the first barrier frame is engaged with the sealing groove. The control unit inflates and deflates the air chamber and controls the first barrier frame to extend and retract within the rectangular annular groove, thereby engaging the first barrier frame with the sealing groove.
2. The heat-insulating and fireproof door and window sealing structure according to claim 1, characterized in that, Multiple air chambers are formed inside the rectangular annular groove, and a sliding shaft is slidably connected inside the air chamber. The sliding shaft is fixedly connected to the first barrier frame, and a spring is provided on the outside of the sliding shaft.
3. The heat-insulating and fireproof door and window sealing structure according to claim 1, characterized in that, The control unit includes a control component disposed inside the door panel and a piping system connected to the control component. The control component inflates and deflates the piping system, thereby controlling the inflation and deflation of the air chamber.
4. The heat-insulating and fireproof door and window sealing structure according to claim 3, characterized in that, The control component includes an inflatable sleeve installed inside the door panel. Both ends of the inflatable sleeve are equipped with sealing blocks, and a piston is slidably connected inside the sealing blocks. A connecting sleeve is installed at the end of the sealing blocks away from the inflatable sleeve, and a heat-conducting block is installed at the end of the connecting sleeve away from the sealing blocks. A shape memory metal is disposed between the piston and the heat-conducting block.
5. The heat-insulating and fireproof door and window sealing structure according to claim 4, characterized in that, Both sides of the door panel have openings, and heat-conducting plates are installed inside the openings. The two ends of the two sets of heat-conducting plates are fixedly connected to heat-conducting blocks.
6. The heat-insulating and fireproof door and window sealing structure according to claim 1, characterized in that, The top of the support plate is provided with a smoke exhaust unit, which includes a smoke exhaust chamber opened on the top of the support plate. The smoke exhaust chamber is equipped with a partition, which divides the smoke exhaust chamber into two independent smoke exhaust chambers. Smoking passages are opened on the side of the two smoke exhaust chambers away from the partition. The top of the two smoke exhaust chambers is equipped with a flow guide hood, and a smoke exhaust pipe is installed on the flow guide hood.
7. The heat-insulating and fireproof door and window sealing structure according to claim 1, characterized in that, A cooling unit is provided between the inner and outer door frames and the door opening. The cooling unit includes two sets of connecting air ducts installed on the support plate, a cooling chamber located between the inner and outer door frames and the door opening, and a columnar chamber opened inside the support plate. The connecting air ducts and the cooling chamber are connected through the columnar chamber. One set of connecting air ducts is used to inject cold air into the cooling chamber, and the other set is used to exhaust the air inside the cooling chamber.
8. The heat-insulating and fireproof door and window sealing structure according to claim 7, characterized in that, One set of columnar chambers is equipped with cooling pipes, and the cooling pipes are equipped with a first air outlet and a second air outlet. The cooling pipes pass through the columnar chambers and are fixedly connected to a corresponding set of connecting air ducts. The connecting air ducts are equipped with connecting fins, and the connecting fins are equipped with cooling fans.
9. The heat-insulating and fireproof door and window sealing structure according to claim 8, characterized in that, A cooling fin is installed on the side of the connecting fin away from the cooling fan.
10. The heat-insulating and fireproof door and window sealing structure according to claim 1, characterized in that, One side of the door panel faces the stairwell or public corridor, and the other side faces the entrance. Smoke sensors are installed on both sides of the door panel to detect smoke at the entrance, stairwell, or public corridor. A controller is also installed on the door panel. When the smoke sensor detects that the smoke concentration exceeds a set threshold, it sends a signal to the controller, which then processes the smoke concentration alarm signal.