Weather-tight airtight single-open electromagnetic shielding fireproof door
By employing a double-sealable strip structure, a composite layer of non-combustible panel and inner core, and stainless steel material, the design solves the sealing and electromagnetic shielding problems of traditional fire doors, achieving highly efficient weather tightness, air tightness, and electromagnetic shielding performance, while improving fire resistance and installation stability.
Patent Information
- Application Number
- CN202521048692.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-05-26
AI Technical Summary
Traditional fire doors lack a systematic sealing design, making it difficult to simultaneously meet the requirements for weather tightness and air tightness. Furthermore, their electromagnetic shielding measures are rudimentary and unable to cope with high-frequency electromagnetic interference. Their fire-resistant structural design is also unreasonable, resulting in insufficient fire resistance or easy deformation at high temperatures.
It adopts a double sealing strip structure, a composite layer of non-combustible panel and non-combustible inner core, stainless steel door panel and fixing components to form a two-way sealing, electromagnetic shielding and fire-resistant structure, to ensure weather tightness, air tightness and electromagnetic shielding performance, while improving fire resistance.
It effectively blocks wind, rain, and gas penetration, resists electromagnetic interference, meets the stringent requirements of data centers and other locations, and has excellent fire resistance and heat insulation properties, ensuring stable installation.
Smart Images

Figure CN223975069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, specifically to a windproof, rainproof, and airproof single-opening electromagnetically shielded fire door. Background Technology
[0002] In the fields of building safety and industrial facilities, fire doors are crucial components for ensuring personnel safety and equipment operation. Especially in scenarios with stringent requirements for fire resistance, waterproofing, airtightness, and electromagnetic environment control, such as data centers, power distribution rooms, laboratories, industrial control rooms, and classified locations, a door system is needed that simultaneously meets the requirements of weatherproofing, airtightness, electromagnetic shielding, and fire resistance. These locations not only require doors to possess reliable fire and heat insulation performance during a fire, but also to resist weathering and prevent gas leaks during daily use, and effectively shield against electromagnetic interference to protect the operation of precision equipment and data security.
[0003] However, traditional fire doors often focus on a single fire protection function and lack a systematic sealing design, making it difficult to simultaneously meet the requirements for weather tightness and air tightness. In the long term, they are prone to problems such as rainwater leakage and air infiltration, which affect indoor environmental control. Regarding electromagnetic shielding requirements, existing doors usually do not have professional shielding structures or have simple shielding measures that cannot cope with high-frequency electromagnetic interference, resulting in equipment signal distortion or data leakage. In addition, the fire-resistant structure design of some doors is unreasonable, such as using a single material for the panel and core, which has insufficient fire resistance or is prone to deformation at high temperatures. Utility Model Content
[0004] This utility model provides a weatherproof and airtight single-opening electromagnetically shielded fire door to address the issues raised in the background art, where traditional fire doors often focus on a single fireproof function and lack a systematic sealing design, making it difficult to simultaneously meet the requirements of weatherproofness and airtightness. This leads to problems such as rainwater leakage and air infiltration during long-term use, affecting indoor environmental control. Regarding electromagnetic shielding, existing doors typically lack a professional shielding structure or employ rudimentary shielding measures, failing to cope with high-frequency electromagnetic interference, resulting in signal distortion or data leakage. Furthermore, some doors have unreasonable fire-resistant structural designs, such as using panels and cores made of a single material, leading to insufficient fire resistance or easy deformation under high temperatures.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A weatherproof and airtight single-opening electromagnetically shielded fire door includes a door frame, a hinge on the surface of the door frame, a door panel fixedly connected to the side of the hinge away from the door frame, a door lock inside the door panel, and a first sealing strip on the inner wall of the door frame.
[0007] A further improvement of this utility model is that: the surface of the first sealing strip overlaps with the surface of the door panel, a second sealing strip overlaps on the side of the door panel surface away from the first sealing strip, and one side of the second sealing strip is fixedly connected to the surface of the door frame.
[0008] A further improvement of this utility model is that: the door panel is provided with a non-combustible panel and a non-combustible inner core, and the two sides of the non-combustible inner core are fixedly connected to the surface of the non-combustible panel.
[0009] A further improvement of this utility model is that the non-combustible panel is made of inorganic fireproof core board, and the non-combustible inner core is made of rock wool.
[0010] A further improvement of this utility model is that a fixing component is provided inside the door frame, the fixing component including a cross-groove pan head screw, a washer, a nut and a spring washer.
[0011] A further improvement of this utility model is that the surface of the cross-groove pan head screw is inserted into the interior of the door frame, and one end of the cross-groove pan head screw is threadedly connected to the surface of the nut.
[0012] A further improvement of this utility model is that the surface of the cross-groove pan head screw is inserted into the interior of the washer, and the surface of the cross-groove pan head screw is inserted into the interior of the spring washer.
[0013] A further improvement of this utility model is that: the surface of the door panel is provided with an observation window, and the door panel is made of stainless steel plate.
[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0015] This utility model provides a windproof, rainproof, and airproof single-opening electromagnetic shielded fire door. The door frame and door panel form a double-sealing structure through first and second sealing strips, effectively blocking wind, rain, and gas penetration. Combined with the metal shielding properties of the stainless steel door panel, it can resist strong electromagnetic interference, meeting the stringent requirements of data centers and confidential locations for airtightness and electromagnetic environment. Furthermore, the door panel uses an inorganic fireproof core board and a rock wool composite layer, resulting in stronger fire resistance, lower thermal conductivity, and excellent resistance to deformation and heat insulation at high temperatures, thus solving the problem of insufficient fire resistance in traditional doors. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a side view of the present invention.
[0018] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0019] In the diagram: 1. Door frame; 2. Door panel; 3. Hinge; 4. Door lock; 5. First sealing strip; 6. Second sealing strip; 7. Non-combustible panel; 8. Non-combustible inner core; 9. Phillips head pan head screw; 10. Washer; 11. Nut; 12. Spring washer; 13. Observation window. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to embodiments:
[0021] Example 1
[0022] like Figure 1-3 As shown, this utility model provides a weatherproof and airtight single-opening electromagnetic shielded fire door, including a door frame 1. A hinge 3 is provided on the surface of the door frame 1. A door panel 2 is fixedly connected to the side of the hinge 3 away from the door frame 1. A door lock 4 is provided inside the door panel 2. A first sealing strip 5 is provided on the inner wall of the door frame 1. The surface of the first sealing strip 5 overlaps with the surface of the door panel 2. A second sealing strip 6 overlaps on the side of the door panel 2 away from the first sealing strip 5. One side of the second sealing strip 6 is fixedly connected to the surface of the door frame 1.
[0023] In this embodiment, the door frame 1 is connected to the door panel 2 via hinge 3. After closing, the door lock 4 locks the door. The first sealing strip 5 and the second sealing strip 6 on the inner wall of the door frame 1 overlap with the surface of the door panel 2 to form a two-way sealing structure, which blocks rainwater, sand, and gas penetration, achieving both wind and rain tightness and air tightness. The door panel 2 adopts a composite structure of non-combustible panel 7 and non-combustible inner core 8. The combination of the two can block the heat transfer in the fire and delay the spread of fire. The stainless steel door panel 2 and the door frame 1 form a continuous metal conductive body. With the help of the sealing strip, electromagnetic interference is attenuated, achieving electromagnetic shielding. The door frame 1 is connected to the wall by a fixing assembly consisting of cross-slot pan head screws 9, washers 10, nuts 11, and spring washers 12. The spring washers counteract loosening caused by vibration, ensuring stable installation. The observation window 13 on the surface of the door panel is made of fireproof glass, which takes into account both visibility and fireproof integrity, making it more suitable for places with high requirements for fire prevention, sealing, electromagnetic shielding, and installation stability.
[0024] Example 2
[0025] like Figure 1-3As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a hinge 3 is provided on the surface of the door frame 1, and a door panel 2 is fixedly connected to the side of the hinge 3 away from the door frame 1. A door lock 4 is provided inside the door panel 2. A first sealing strip 5 is provided on the inner wall of the door frame 1. The surface of the first sealing strip 5 overlaps with the surface of the door panel 2. A second sealing strip 6 overlaps on the side of the surface of the door panel 2 away from the first sealing strip 5. One side of the second sealing strip 6 is fixedly connected to the surface of the door frame 1. A non-combustible panel 7 and a non-combustible inner core 8 are provided inside the door panel 2. Both sides of the non-combustible inner core 8 are fixedly connected to the surface of the non-combustible panel 7. The non-combustible panel 7 is made of inorganic fireproof core board, and the non-combustible inner core 8 is made of rock wool. A fixing component is provided inside the door frame 1. The fixing component includes a cross-slot pan head screw 9, a washer 10, a nut 11, and a spring washer 12. The surface of the cross-slot pan head screw 9 is inserted into the interior of the door frame 1, and one end of the cross-slot pan head screw 9 is threadedly connected to the surface of the nut 31.
[0026] In this embodiment, the door frame 1 is connected to the door panel 2 via hinge 3. After closing, the door lock 4 locks the door. The first sealing strip 5 and the second sealing strip 6 on the inner wall of the door frame 1 overlap with the surface of the door panel 2 to form a two-way sealing structure, which blocks rainwater, sand and gas penetration, and achieves both wind and rain tightness and air tightness. The door panel 2 adopts a composite structure of non-combustible panel 7 and non-combustible inner core 8. The combination of the two can block the heat transfer in the fire and delay the spread of the fire. The stainless steel door panel 2 and the door frame 1 form a metal conductive continuum. With the help of the sealing strip, electromagnetic interference is attenuated, and electromagnetic shielding is achieved.
[0027] Example 3
[0028] like Figure 1-3 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a hinge 3 is provided on the surface of the door frame 1, and a door panel 2 is fixedly connected to the side of the hinge 3 away from the door frame 1. A door lock 4 is provided inside the door panel 2. A first sealing strip 5 is provided on the inner wall of the door frame 1. The surface of the first sealing strip 5 overlaps with the surface of the door panel 2. A second sealing strip 6 overlaps on the side of the surface of the door panel 2 away from the first sealing strip 5. One side of the second sealing strip 6 is fixedly connected to the surface of the door frame 1. The surface of the cross-slot pan head screw 9 is inserted into the inside of the washer 10. The surface of the cross-slot pan head screw 9 is inserted into the inside of the spring washer 12. An observation window 13 is provided on the surface of the door panel 2. The material of the door panel 2 is stainless steel plate.
[0029] In this embodiment, the door frame 1 is connected to the wall by a fixing assembly consisting of a cross-groove pan head screw 9, a washer 10, a nut 11, and a spring washer 12. The spring washer counteracts loosening caused by vibration and other factors, ensuring a stable installation. The observation window 13 on the door panel surface is made of fireproof glass, which balances visibility and fire resistance, making it more suitable for places with high requirements for fire resistance, sealing, electromagnetic shielding, and installation stability.
[0030] The working principle of this windproof, airtight, single-opening electromagnetic shielded fire door will be explained in detail below.
[0031] like Figure 1-3 As shown, during use, the door frame 1 is connected to the door panel 2 via hinges 3. After closing, the door lock 4 locks the door. The first sealing strip 5 and the second sealing strip 6 on the inner wall of the door frame 1 overlap with the surface of the door panel 2 to form a two-way sealing structure, blocking rainwater, sand, and gas penetration, achieving both wind and rain tightness and air tightness. The door panel 2 adopts a composite structure of a non-combustible panel 7 and a non-combustible inner core 8. The combination of the two can block the heat transfer in the fire and delay the spread of the fire. The stainless steel door panel 2 and the door frame 1 form a continuous metal conductive body. With the help of the sealing strips, electromagnetic interference is attenuated, achieving electromagnetic shielding. The door frame 1 is connected to the wall by a fixing assembly consisting of cross-slot pan head screws 9, washers 10, nuts 11, and spring washers 12. The spring washers counteract loosening caused by vibration, ensuring stable installation. The observation window 13 on the surface of the door panel is made of fireproof glass, which takes into account both visibility and fireproof integrity, making it more suitable for places with high requirements for fire prevention, sealing, electromagnetic shielding, and installation stability.
[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A weather-stripped, air-tight, single-leaf, electromagnetic shielded, fire door, characterized by: Including door frame (1), the surface of door frame (1) is provided with hinge (3), the side away from door frame (1) of hinge (3) is fixedly connected with door plate (2), the inside of door plate (2) is provided with door lock (4), the inner wall of door frame (1) is provided with first sealing rubber strip (5).
2. The weatherproof and airtight single leaf electromagnetic shielded fire door according to claim 1, characterized in that: The surface of first sealing rubber strip (5) is overlapped with the surface of door plate (2), the side away from first sealing rubber strip (5) of door plate (2) surface is overlapped with second sealing rubber strip (6), one side of second sealing rubber strip (6) is fixedly connected with the surface of door frame (1).
3. The weatherproof and airtight single leaf electromagnetic shielded fire door according to claim 1, wherein: The inside of door plate (2) is provided with non-combustible panel (7) and non-combustible inner core (8), both sides of non-combustible inner core (8) are fixedly connected with the surface of non-combustible panel (7).
4. The weatherproof and airtight single leaf electromagnetic shielded fire door according to claim 3, wherein: The material of non-combustible panel (7) adopts inorganic fireproof core board, the material of non-combustible inner core (8) adopts rock wool.
5. The weatherproof, air-tight, single leaf, electromagnetic shielded, fire door of claim 1, wherein: The inside of door frame (1) is provided with fixing assembly, the fixing assembly includes cross groove disc head screw (9), gasket (10), nut (11) and spring washer (12).
6. A weatherseal, airseal, single leaf, electromagnetic shielded, fire door according to claim 5, wherein: The surface of cross groove disc head screw (9) is inserted with the inside of door frame (1), one end of cross groove disc head screw (9) is screw connected with the surface of nut (31).
7. A weatherseal, airseal, single leaf, electromagnetic shielded, fire door according to claim 6, wherein: The surface of cross groove disc head screw (9) is inserted with the inside of gasket (10), the surface of cross groove disc head screw (9) is inserted with the inside of spring washer (12).
8. The weatherproof, air-tight, single leaf electromagnetic shielded fire door of claim 1, wherein: The surface of door plate (2) is provided with observation window (13), the material of door plate (2) adopts stainless steel plate.