Roller shutter door with fireproof mechanism

Abstract

The utility model relates to the technical field of roller shutter doors, in particular to a roller shutter door with a fireproof mechanism, which comprises a door frame, a reel, a shutter plate and a driving mechanism, a mounting frame is arranged at the top of the door frame, the reel is rotatably mounted on the mounting frame, the driving mechanism is fixedly mounted on the mounting frame and is in transmission connection with the reel, and the shutter plate is formed by hinging a plurality of shutter pieces. A fireproof layer is arranged on the surface of the inner side of the curtain piece, fireproof sealing pieces are arranged at the joint of the curtain plate and the door frame and the hinge joint of the curtain piece, a protection plate is arranged on the inner side of the curtain piece, a pre-fracture groove is formed in the surface of the protection plate, and a fireproof curtain in a compressed state is clamped between the protection plate and the curtain piece. According to the utility model, the fireproof curtain, the solid powder layer and the powder layer are quickly decomposed to generate gas, so that the fireproof curtain is quickly unfolded from a compressed state to form a three-dimensional heat insulation layer, the high-temperature environment is actively coped with, and the problem that the response speed of a traditional passive fireproof structure is low is solved.

Description

A roller shutter door equipped with a fire-resistant mechanism Technical Field

[0001] This utility model relates to a roller shutter door, and more particularly to a roller shutter door with a fireproof mechanism, belonging to the technical field of roller shutter doors. Background Technology

[0002] Currently, fire-resistant roller shutters on the market are heavy and require high strength from walls and ceilings during installation. They also occupy a lot of space when rolled up, making them unsuitable for places with low ceilings or compact spaces, such as shops, small warehouses, and family garages. Ordinary roller shutters lack fire-resistant functions and cannot effectively block flames and heat in the event of a fire. Although there are existing technologies that can improve the fire resistance of ordinary roller shutters by adding a fire-resistant layer, passive fire-resistant structures have slow response speeds and limited heat insulation effects when facing high-temperature environments.

[0003] Therefore, it is urgent to improve the roller shutter doors equipped with fire-resistant mechanisms to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a roller shutter door with a fireproof mechanism. It uses a fireproof curtain and a solid powder layer, and is electrically triggered by a conductive network embedded in the middle of the solid powder layer. When the temperature sensor detects that the temperature exceeds the threshold, the control component triggers the conductive wire to discharge instantaneously. The electric arc heating causes the powder layer to decompose rapidly and generate gas, which pushes the protective plate to crack along the pre-fracture groove. This causes the fireproof curtain to quickly unfold from the compressed state to form a three-dimensional heat insulation layer, actively responding to high-temperature environments and solving the problem of slow response speed of traditional passive fireproof structures.

[0005] To achieve the above objectives, the main technical solution adopted by this utility model includes: a door frame, a roller, a curtain panel, and a driving mechanism. The top of the door frame is provided with a mounting bracket, the roller is rotatably mounted on the mounting bracket, the driving mechanism is fixedly mounted on the mounting bracket and is connected to the roller for transmission, the curtain panel is composed of multiple curtain slats hinged together, and one end of the curtain panel is fixedly connected to the roller. The inner surface of the curtain slats is provided with a fireproof layer, and fireproof seals are provided at the connection between the curtain panel and the door frame and at the hinge points of the curtain slats. A protective plate is provided on the inner side of the curtain slats, and a pre-fracture groove is opened on the surface of the protective plate. A compressed fireproof curtain is sandwiched between the protective plate and the curtain slats, and the folding gaps of the fireproof curtain are filled with a solid powder layer that generates gas when heated.

[0006] Preferably, a temperature sensor is fixedly installed on the inner side of the protective plate, a conductive wire network is embedded in the solid powder layer, and the temperature sensor and the conductive wire network are electrically connected to a control component.

[0007] Preferably, the fireproof sealant includes an L-shaped fireproof sealing strip on the door frame edge and fireproof sealant at the hinge of the curtain slats.

[0008] Preferably, the protective plate is a lightweight flame-retardant plate with a thickness of 1-2 mm, the depth of the pre-fracture groove is 1 / 3-1 / 2 of the plate thickness, and the pre-fracture groove is distributed in a grid pattern.

[0009] Preferably, the fireproof curtain is made of ceramic fiber cloth, with a thickness of 2cm in the compressed state and 8-10cm in the unfolded state, and the edge of the fireproof curtain is bonded to the edge of the curtain slat.

[0010] Preferably, the curtain slats protrude outwards, and the inner side of the curtain slats is provided with a groove, with the fireproof curtain located within the groove.

[0011] Preferably, the conductive wire network consists of multiple nickel-chromium alloy wires with a diameter of 0.1-0.5 mm, with a spacing of 2 cm-5 cm between adjacent wires, and the conductive wire network is embedded in the middle of the solid powder layer.

[0012] Preferably, the control component includes a backup power supply.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. Through the fireproof curtain and solid powder layer, and through the electric trigger heating by the conductive network embedded in the middle of the solid powder layer, when the temperature sensor detects that the temperature exceeds the threshold, the control component triggers the conductive wire to discharge instantaneously. The electric arc heating causes the powder layer to decompose rapidly and generate gas, which pushes the protective plate to crack along the pre-fracture groove, causing the fireproof curtain to quickly unfold from the compressed state to form a three-dimensional heat insulation layer, actively responding to the high temperature environment and solving the problem of slow response speed of traditional passive fire protection structures. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 is a schematic diagram of the exploded structure of the curtain slats provided by this utility model;

[0017] Figure 2 is a schematic diagram of the isometric structure provided by this utility model;

[0018] Figure 3 is a schematic diagram of the internal structure of the mounting bracket provided by this utility model;

[0019] Figure 4 is a schematic diagram of the lower half of the roller shutter door provided by this utility model;

[0020] Figure 5 is a schematic diagram of the isometric structure of the curtain slats provided by this utility model;

[0021] Figure 6 is a schematic diagram of the structure of the fireproof curtain provided by this utility model after it is blown open;

[0022] Figure 7 is a schematic diagram of the cross-sectional structure of the curtain slats provided by this utility model.

[0023] In the diagram, 1. Door frame; 2. Roller; 3. Curtain panel; 4. Drive mechanism; 5. Mounting bracket; 6. Curtain slats; 7. Fireproof layer; 8. Protective plate; 9. Pre-fractured groove; 10. Fireproof curtain; 11. Solid powder layer; 12. Temperature sensor; 13. Conductive wire network; 15. L-shaped fireproof sealing strip; 16. Fireproof sealant; 17. Backup power supply. Detailed Implementation

[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] As shown in Figures 1-5, the fire-resistant roller shutter door provided in this embodiment includes a door frame 1, a roller 2, a curtain panel 3, and a drive mechanism 4. A mounting bracket 5 is provided at the top of the door frame 1. The roller 2 is rotatably mounted on the mounting bracket 5. The drive mechanism 4 is fixedly mounted on the mounting bracket 5 and is connected to the roller 2 via a transmission mechanism. The drive mechanism 4 drives the roller 2 to rotate. The curtain panel 3 is composed of multiple slats 6 hinged together, and one end of the curtain panel 3 is fixedly connected to the roller 2. A fire-resistant layer 7 is provided on the inner surface of the slats 6. The fire-resistant layer 7 is 0.5-1mm thick glass wool felt, which can effectively block flames and heat, and lift the curtain slats. The fire resistance of the curtain panel 3 is enhanced by fire-resistant sealant at the connection between the curtain panel 3 and the door frame 1, as well as at the hinge joints of the curtain slats 6. The L-shaped fire-resistant sealing strip 15 on the door frame 1 prevents smoke from seeping through the gap between the curtain panel 3 and the door frame 1. The fire-resistant sealant 16 filling the hinge joints of adjacent curtain slats 6 forms a continuous sealing interface, further enhancing the fire-resistant sealing effect. A protective plate 8 is provided on the inner side of the curtain slats 6, with pre-fractured grooves 9 on its surface. These grooves are distributed in a grid pattern, with a depth of 1 / 3 to 1 / 2 of the plate thickness. The protective plate 8 is a lightweight flame-retardant board with a thickness of 1-2mm. This design makes the protective plate 8 easily torn by the fireproof curtain 10. A compressed fireproof curtain 10 is sandwiched between the protective plate 8 and the curtain slat 6. The fold gaps of the fireproof curtain 10 are filled with a solid powder layer 11 that generates gas when heated. The fireproof curtain 10 is made of ceramic fiber cloth, which has high temperature resistance. The thickness in the compressed state is 2cm. At this time, the fireproof curtain 10 can fill the groove on the inner side of the curtain slat 6. The curtain slat 6 protrudes outward, which serves to strengthen the structure on the one hand, and on the other hand... After the surface bulges outward, a groove is formed on the inner side. The protective plate 8 covers the outside of the groove and is flush with the four rings of the curtain 6. This does not increase the overall thickness of the curtain 3 and saves space. The fireproof curtain 10 is 8-10cm thick when unfolded. It is filled with gas to provide heat insulation. The edges of the fireproof curtain 10 are bonded to the edges of the curtain 6 to ensure a firm connection. The folding gaps of the fireproof curtain 10 are filled with a solid powder layer 11 that generates gas when heated. The solid powder layer 11 contains sodium bicarbonate, ammonium nitrate and cellulose. The cellulose fixes the solid powder. The sodium bicarbonate and ammonium nitrate decompose when heated to generate gas, which pushes the fireproof curtain 10 to unfold.

[0026] Furthermore, temperature sensors 12 are fixedly installed inside the protective plate 8. Three to five temperature sensors 12 are evenly arranged inside the protective plate 8 and connected to the control component through high-temperature resistant wires, enabling accurate detection of temperature changes inside the protective plate 8. A conductive wire network 13 is embedded in the solid powder layer 11. The conductive wire network 13 consists of multiple nickel-chromium alloy wires with a diameter of 0.1-0.5mm, with an adjacent wire spacing of 2cm-5cm, and is embedded in the middle of the solid powder layer 11. This design allows the nickel-chromium alloy wires to be completely wrapped by the solid powder layer 11, facilitating voltage breakdown between adjacent wires and rapidly activating the solid powder. The temperature sensors 12 and the conductive wire network 13 are electrically connected to the control component, which includes a microcontroller, a backup power supply 17, and a signal processing circuit. When the temperature sensor 12 detects ≥280℃, the control component triggers the conductive wires to discharge instantaneously. The electric arc heats the powder and rapidly generates gas, pushing the protective plate 8 to crack along the pre-fracture groove 9. The fire curtain 10 unfolds to form a three-dimensional heat insulation layer, achieving a rapid and active fire prevention response.

[0027] The curtain slat 6 protrudes outward, which serves to strengthen the structure and improve its strength and stability. On the other hand, the inner side of the curtain slat 6 forms a groove after it protrudes outward, and the fireproof curtain 10 is located in the groove. The protective plate 8 covers the outside of the groove and is flush with the four rings of the curtain slat 6. This design does not increase the overall thickness of the curtain plate 3, reduces the weight of the roller shutter door, and saves installation space. It is suitable for places with low ceilings or compact spaces.

[0028] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0029] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0030] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A roller shutter door with a fireproof mechanism, comprising a door frame (1), a roller (2), a curtain panel (3), and a drive mechanism (4), characterized in that: The top of the door frame (1) is provided with a mounting bracket (5), the roller (2) is rotatably mounted on the mounting bracket (5), the drive mechanism (4) is fixedly mounted on the mounting bracket (5) and is connected to the roller (2) for transmission. The curtain panel (3) is composed of multiple curtain slats (6) hinged together, and one end of the curtain panel (3) is fixedly connected to the roller (2). The inner surface of the curtain slats (6) is provided with a fireproof layer (7). Fireproof seals are provided at the connection between the curtain panel (3) and the door frame (1) and at the hinge of the curtain slats (6). The inner side of the curtain slats (6) is provided with a protective plate (8). The surface of the protective plate (8) is provided with a pre-fracture groove (9). A compressed fireproof curtain (10) is sandwiched between the protective plate (8) and the curtain slats (6). The folding gap of the fireproof curtain (10) is filled with a solid powder layer (11) that generates gas when heated.

2. A roller shutter door with a fireproof mechanism according to claim 1, characterized in that: A temperature sensor (12) is fixedly installed on the inner side of the protective plate (8), and a conductive wire network (13) is embedded in the solid powder layer (11). The temperature sensor (12) and the conductive wire network (13) are electrically connected to a control component.

3. A roller shutter door with a fireproof mechanism according to claim 1, characterized in that: The fireproof sealing component includes an L-shaped fireproof sealing strip (15) on the edge of the door frame (1) and a fireproof sealant (16) at the hinge of the curtain slat (6).

4. A roller shutter door with a fireproof mechanism according to claim 1, characterized in that: The protective plate (8) is a lightweight flame-retardant plate with a thickness of 1-2 mm. The depth of the pre-fracture groove (9) is 1 / 3-1 / 2 of the plate thickness, and the pre-fracture groove (9) is distributed in a grid pattern.

5. A roller shutter door with a fireproof mechanism according to claim 1, characterized in that: The fireproof curtain (10) is made of ceramic fiber cloth, with a thickness of 2cm in the compressed state and 8-10cm in the unfolded state. The edge of the fireproof curtain (10) is bonded to the edge of the curtain panel (6).

6. A roller shutter door with a fireproof mechanism according to claim 1, characterized in that: The curtain slat (6) protrudes outward, and the inner side of the curtain slat (6) is provided with a groove, and the fireproof curtain (10) is located in the groove.

7. A roller shutter door with a fireproof mechanism according to claim 2, characterized in that: The conductive wire network (13) consists of multiple nickel-chromium alloy wires with a diameter of 0.1-0.5 mm and a spacing of 2 cm-5 cm between adjacent wires. The conductive wire network (13) is embedded in the middle of the solid powder layer (11).

8. A roller shutter door with a fireproof mechanism according to claim 2, characterized in that: The control component includes a backup power supply (17).

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