Ventilation fire door with baffle closing function

Abstract

The utility model relates to a kind of ventilation fire door with baffle closing function, including door leaf, door leaf is provided with the ventilation opening of the inner and outer side of through door leaf, the side wall of ventilation opening is connected with fixed louver, the inner side of door leaf is symmetrically set with guide slide seat in the both sides of ventilation opening, guide slide groove is set in guide slide seat along vertical direction, further including an activity baffle, the both sides of activity baffle are respectively embedded in corresponding side guide slide groove and with guide slide seat fixed connection, activity baffle is fixed in the upper end of guide slide seat by screw, fuse clamp and thermosensitive fuse, when air temperature rises to certain height, thermosensitive fuse fuses and makes activity baffle fall until activity baffle completely covers ventilation opening.The utility model is provided with ventilation opening on door leaf to realize indoor ventilation and heat dissipation, and after indoor temperature rises, activity baffle falls and can completely cover ventilation opening, ensure the fire resistance and smoke resistance of door leaf.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a ventilated fire door with a baffle closing function. Background Technology

[0002] Fire doors are an important component of fire protection equipment, possessing performance requirements such as fire resistance stability, integrity, and thermal insulation. They are typically installed in fire-resistant compartments, evacuation stairwells, vertical shafts, and other locations requiring a certain level of fire resistance. In addition to the functions of ordinary doors, fire doors also play a crucial role in preventing the spread of fire and smoke, thus halting the spread of fire for a certain period and ensuring the safe evacuation of personnel.

[0003] To ensure ventilation of the indoor environment, existing fire doors are equipped with louvers on the door leaf to allow heat generated indoors to escape to the outside. However, this method has certain drawbacks. For example, Chinese patent application number CN202422561241.5 discloses a door leaf with a louver structure. The door leaf includes a first door panel and a second door panel at both ends, as well as several side panels on the sides. The surfaces of the first door panel and the second door panel are provided with several bending slits along the height direction of the door leaf. The first door panel and the second door panel form a bending plate through the bending slits. The first door panel and the second door panel form louver windows through the bending plates. The louver windows of the first door panel and the second door panel are connected.

[0004] Louvers are installed on the door to allow air to circulate between the inside and outside. When the indoor temperature is too high, heat can be expelled to the outside through the louvers. However, in the event of a fire, smoke and dust from the inside can also drift out through the louvers, affecting the surrounding environment and reducing the door's smoke-proof performance. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a ventilated fire door with a baffle closing function. The fixed louvers realize indoor ventilation and heat dissipation, and the movable baffle can fall down to block the ventilation opening, thereby improving the smoke prevention performance of the door.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A fireproof ventilated door with a baffle closure function includes a door leaf with a ventilation opening extending through its inner and outer sides. Fixed louvers are connected to the sidewalls of the ventilation opening. Guide slide seats are symmetrically arranged on both sides of the ventilation opening on the inner side of the door leaf. Guide slide grooves are provided vertically within each guide slide seat. A movable baffle is also included, with its two sides respectively embedded in the corresponding guide slide grooves and fixedly connected to the guide slide seats. The movable baffle is fixed to the upper end of the guide slide seats by screws, a fuse clamp, and a thermistor. When the air temperature rises to a certain level, the thermistor melts, causing the movable baffle to fall until it completely closes the ventilation opening.

[0008] Furthermore, an upper fixing plate is provided between the upper rear sides of the guide slides on both sides, and the upper end of the movable baffle is fixedly connected to the upper fixing plate.

[0009] Furthermore, a lower fixing plate is provided between the bottoms of the guide slides on both sides, and the movable baffle descends until the lower fixing plate limits the movable baffle.

[0010] Furthermore, each guide slide seat has a fireproof and smoke-proof strip on the side near the movable baffle.

[0011] Furthermore, the interior of the movable baffle is filled with fireproof board.

[0012] Furthermore, the height of the movable baffle is greater than the height of the vent, and the width of the movable baffle is greater than the width of the vent.

[0013] Furthermore, the fixed louver includes multiple fixed louver blades arranged in a vertical direction, and each fixed louver blade has a fireproof expansion seal at its bottom.

[0014] Furthermore, it also includes an upper door frame and a lower door frame, wherein the upper door frame and the lower door frame are respectively provided with a first fireproof and smokeproof sealing strip that seals with the upper and lower ends of the door leaf.

[0015] Furthermore, it also includes two side door frames, each of which is provided with a second fireproof and smokeproof sealing strip that seals with the left and right sides of the door leaf.

[0016] Furthermore, the interior of the door leaf is filled with a fireproof door core board.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First, the door leaf of this utility model is provided with a ventilation opening, and fixed louvers are provided on the left and right side walls of the ventilation opening. While ensuring that the fire door has anti-theft performance, the door leaf also has the function of ventilation and heat dissipation, so that the heat generated indoors can be discharged outdoors through the fixed louvers.

[0019] Secondly, a movable baffle is installed on the inner side of the door leaf and is fixed to the upper end of the guide slide by screws, fuse clamps and thermal fuses. When the movable baffle falls, it can completely cover the gap of the fixed louvers, so that the door leaf has strong sealing performance and ensures the smoke prevention performance of the door leaf.

[0020] Finally, fireproof and smoke-proof strips are installed on the side of the guide slide seats on both sides near the side of the movable baffle. The two sides of the movable baffle are sealed with the guide slide seats on the same side. Fireproof expansion seals are installed at the bottom of each fixed louver blade. When the temperature rises, the fireproof expansion seals expand, further reducing the gap of the fixed louvers, thereby further improving their sealing performance and ensuring the smoke-proof performance of the door. Attached Figure Description

[0021] Figure 1 This is a front view of a ventilation and fireproof door with a baffle closing function according to this utility model.

[0022] Figure 2 This is a cross-sectional schematic diagram of a ventilation and fireproof door with a baffle closing function according to this utility model.

[0023] Figure 3 This is a cross-sectional view of the movable baffle of this utility model installed on the guide slide.

[0024] Figure 4 This is a vertical cross-sectional view of the movable baffle of this utility model installed on the guide slide.

[0025] Figure 5 This is a vertical cross-sectional view of the movable baffle of this utility model covering the ventilation opening.

[0026] Figure 6 This is a cross-sectional view of the side door frame of this utility model.

[0027] Figure 7 This is a cross-sectional view of the upper door frame of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0029] like Figures 1 to 7As shown, the present invention provides a ventilated fire door with a baffle closing function, including a door leaf 1. The door leaf 1 is provided with a ventilation opening 11 that runs through the inner and outer sides of the door leaf 1. The side wall of the ventilation opening 11 is connected to a fixed louver 2. The inner side of the door leaf 1 is symmetrically provided with guide slide seats 3 on both sides of the ventilation opening 11. The guide slide seats 3 are provided with guide slide grooves 31 in the vertical direction. It also includes a movable baffle 4. The two sides of the movable baffle 4 are respectively embedded in the guide slide grooves 31 on the corresponding sides and fixedly connected to the guide slide seats 3. The movable baffle 4 is fixed to the upper end of the guide slide seats 3 by screws 42, fuse clamps 43 and thermal fuses 44. When the air temperature rises to a certain height, the thermal fuses 44 melt and cause the movable baffle 4 to fall until the movable baffle 4 completely blocks the ventilation opening 11.

[0030] In this embodiment, an upper fixed plate 32 is provided between the upper rear sides of the guide slide seats 3 on both sides. The upper end of the movable baffle 4 is fixedly connected to the upper fixed plate 32. The lower end of the movable baffle 4 will not block the ventilation opening 11, ensuring air flow between the indoor and outdoor environments and realizing ventilation and heat dissipation functions.

[0031] In this embodiment, a lower fixing plate 33 is provided between the bottoms of the guide slide seats 3 on both sides. When a fire occurs and the air temperature exceeds 70°C, the thermal fuse 44 melts within 40 seconds, and the movable baffle 4 falls under the action of gravity. The lower fixing plate 33 limits the movable baffle 4, so that the movable baffle 4 will not fall to the ground.

[0032] In this embodiment, each guide slide 3 is provided with a fireproof and smokeproof strip 34 on the side near the movable baffle 4 to prevent smoke from leaking out from the gap between the movable baffle 4 and the guide slide 3, thereby improving the sealing performance of the door leaf 1.

[0033] In this embodiment, the interior of the movable baffle 4 is filled with a fireproof board 41 to improve the fire resistance of the fireproof board 41.

[0034] In this embodiment, the height of the movable baffle 4 is greater than the height of the vent 11, and the width of the movable baffle 4 is greater than the width of the vent 11. When the movable baffle 4 is lowered, it can completely block the vent 11, preventing smoke from entering the outside through the gap of the fixed louver 2 and the vent 11, thereby improving the smoke prevention performance of the door 1.

[0035] In this embodiment, the fixed louver 2 includes a plurality of fixed louver blades 21 arranged in a vertical direction. Each fixed louver blade 21 has a fireproof expansion seal 22 at its bottom. When the temperature rises to above 200°C, the fireproof expansion seal 22 begins to expand rapidly with the high temperature, completely filling the gaps between each fixed louver blade 21, ensuring that smoke will not escape from the room and affect the surrounding environment.

[0036] In this embodiment, an upper door frame 5 and a lower door frame 6 are also provided, and the upper door frame 5 and the lower door frame 6 are respectively provided with a first fireproof and smokeproof sealing strip 8 that seals with the upper and lower ends of the door leaf 1.

[0037] In this embodiment, it also includes two door frames 7, and each of the two door frames 7 is provided with a second fireproof and smokeproof sealing strip 9 that seals with the left and right sides of the door leaf 1.

[0038] The first fireproof and smokeproof sealing strip 8 and the second fireproof and smokeproof sealing strip 9 with good compression rebound are adopted to ensure the sealing performance between the upper and lower sides and the left and right sides of the door leaf 1 and each door frame when the door leaf 1 is closed.

[0039] In this embodiment, both the door frame and the door leaf 1 are made of steel. The interior of the door leaf 1 is filled with a fireproof door core board 12 with excellent fire resistance, which ensures the fire resistance of the door leaf 1 and has strong anti-theft performance.

[0040] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A fire door with a louvered closure function comprising a door leaf, characterized in that: The door leaf is provided with a ventilation opening that runs through the inner and outer sides of the door leaf. The side wall of the ventilation opening is connected to a fixed louver. The inner side of the door leaf is symmetrically provided with guide slide seats on both sides of the ventilation opening. The guide slide seats are provided with guide slide grooves along the vertical direction and also include a movable baffle. The two sides of the movable baffle are respectively embedded in the guide slide grooves on the corresponding sides and are fixedly connected to the guide slide seats. The movable baffle is fixed to the upper end of the guide slide seats by screws, fuse clamps and thermal fuses. When the air temperature rises to a certain height, the thermal fuse melts and causes the movable baffle to fall until the movable baffle completely blocks the ventilation opening.

2. The fire door with the baffle closing function according to claim 1, characterized in that: An upper fixing plate is provided between the upper rear sides of the guide slides on both sides, and the upper end of the movable baffle is fixedly connected to the upper fixing plate.

3. A ventilated fire door with a baffle closing function according to claim 2, characterized in that: A lower fixing plate is provided between the bottoms of the guide slides on both sides, and the movable baffle descends until the lower fixing plate limits the movable baffle.

4. The fire door with the baffle closing function according to claim 3, characterized in that: Each guide slide is provided with a fireproof and smoke-proof strip on the side near the movable baffle.

5. The fire door with the baffle closing function according to claim 4, characterized in that: The interior of the movable baffle is filled with fireproof board.

6. A fire door with a baffle closure according to claim 5, wherein: The height of the movable baffle is greater than the height of the vent, and the width of the movable baffle is greater than the width of the vent.

7. The fire door with the baffle closing function according to claim 6, characterized in that: The fixed louvers include multiple fixed louver blades arranged in a vertical direction, and each fixed louver blade has a fireproof expansion seal at its bottom.

8. The fire door with the baffle closing function according to claim 1, characterized in that: It also includes an upper door frame and a lower door frame, and the upper door frame and the lower door frame are respectively provided with a first fireproof and smokeproof sealing strip that seals with the upper and lower ends of the door leaf.

9. The fire door with a baffle closing function according to claim 8, characterized in that: It also includes two side door frames, each of which is provided with a second fireproof and smokeproof sealing strip that seals with the left and right sides of the door leaf.

10. The fire door with a baffle closing function according to claim 9, characterized in that: The interior of the door leaf is filled with fireproof door core board.

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