Heat insulation airtight fire exit door

Abstract

The utility model discloses a heat insulation closed fire exit door which comprises a door plate body, a limiting strip is installed on the outer side of the door plate body, the door plate body comprises a door shell, an air filling cavity is formed in the inner side of the door shell, the air filling cavity is filled with air, and when the air is heated, the air is expanded; a plurality of filling air pipes are arranged on the outer side of the door shell in a penetrating mode. An expansion sealing mechanism is installed on the inner side of the limiting strip in a clamped mode and has expansion performance, and the expansion sealing mechanism communicates with the air filling cavity through an air filling pipe. The fireproof door at least has the following beneficial effects that by arranging the air filling cavity and the expansion sealing mechanism, expansion air is automatically guided into the sealing mechanism in the fire disaster according to the thermal expansion principle, so that the sealing mechanism is tightly attached to the door frame, gaps are effectively compensated, and harmful gas leakage is prevented; external power is not needed, air expansion and sealing mechanism action are triggered only through temperature change, quick response is achieved, and the automation level and reliability of the fire exit door are improved.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment technology, specifically to a heat-insulated and airtight fire door. Background Technology

[0002] As an important component of fire-resistant partitions in buildings, the performance of fire doors is directly related to the safe evacuation of people and the control of fire during a fire.

[0003] While traditional fire doors offer some fire resistance and insulation, in high-temperature environments, the gaps between the door and frame can widen due to thermal deformation, leading to the leakage of harmful smoke and hot gases, thus compromising fire protection. Furthermore, the insulation layers of existing fire doors are mostly fixed structures, unable to dynamically adjust their sealing performance according to temperature changes, making them ill-suited to the complex environments during a fire. Therefore, there is an urgent need for a fire door that can dynamically respond to temperature changes, automatically compensate for gaps, and improve insulation performance to address the shortcomings of existing technology. Utility Model Content

[0004] Therefore, this application provides a heat-insulated and airtight fire door to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A heat-insulated and airtight fire door, comprising:

[0007] The door panel body has a limit strip installed on its outer side. The door panel body includes a door shell. An air filling cavity is provided on the inner side of the door shell. The air filling cavity is filled with air. When heated, the air expands. Several air filling pipes are provided through the outer side of the door shell.

[0008] An expansion sealing mechanism is installed on the inner side of the limiting strip, which has expansion properties. The expansion sealing mechanism is connected to the air filling chamber through a filling air pipe.

[0009] Optionally, the expansion sealing mechanism includes an expansion ring, the inner side of which has a cavity, a limit ring is installed on the outer side of which has a connecting hole.

[0010] Optionally, one end of the filling air tube engages with the connecting hole.

[0011] Optionally, a plurality of compensation rings are also provided on the outer side of the expansion ring.

[0012] Optionally, a reinforcing plate is also installed on the inner side of the door housing.

[0013] Optionally, a heat insulation plate is installed on the inner side of the reinforcing plate.

[0014] Optionally, a vacuum chamber is also provided on the inner side of the heat insulation plate.

[0015] Compared with the prior art, this application has at least the following beneficial effects:

[0016] 1. By setting up an air-filling chamber and an expansion sealing mechanism, the principle of thermal expansion is used to automatically introduce expanded air into the sealing mechanism during a fire, so that it fits tightly against the door frame, effectively compensating for gaps and preventing the leakage of harmful gases.

[0017] 2. No external power is required; the door responds quickly by triggering air expansion and sealing mechanism action solely through temperature changes, thus improving the automation level and reliability of the fire door. Attached Figure Description

[0018] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0019] Figure 1 This application provides an overall structural schematic diagram of an insulated and airtight fire door;

[0020] Figure 2 A schematic diagram of the overall structure of the expansion sealing mechanism and the filling air pipe connection of a heat-insulating and airtight fire door provided in this application;

[0021] Figure 3 This is a cross-sectional structural diagram of an insulated and airtight fire door provided in this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Door panel body; 101. Door shell; 102. Reinforcing plate; 103. Heat insulation plate; 104. Vacuum chamber; 105. Air filling chamber; 2. Limiting strip; 3. Expansion sealing mechanism; 301. Expansion ring; 302. Limiting ring; 303. Connecting hole; 304. Compensating ring; 4. Filling air pipe. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-3 The present application will be further described in detail through specific embodiments.

[0025] The present invention provides a heat-insulated and airtight fire door, including a door panel body 1, a limit strip 2 installed on the outer side of the door panel body 1, the door panel body 1 including a door shell 101, an air filling cavity 105 provided on the inner side of the door shell 101, the air filling cavity 105 being filled with air, which expands when heated, and several air filling pipes 4 penetrating the outer side of the door shell 101 to facilitate the outward discharge of the thermally expanded air.

[0026] An expansion sealing mechanism 3 is installed on the inner side of the limiting strip 2. It has expansion performance. The expansion sealing mechanism 3 is connected to the air filling chamber 105 through the filling air pipe 4, so that the air in the air filling chamber 105 after thermal expansion can be introduced into the expansion sealing mechanism 3, causing the expansion sealing mechanism 3 to expand. This allows the expansion sealing mechanism 3 to fit tightly against the door frame, compensating for the gap between the door frame and the door panel body 1, thereby preventing the leakage of harmful gases generated during a fire.

[0027] The expansion sealing mechanism 3 includes an expansion ring 301, an inner cavity is provided on the inner side of the expansion ring 301, a limiting ring 302 is installed on the outer side of the expansion ring 301, a connecting hole 303 is provided on the inner side of the limiting ring 302, and one end of the filling air tube 4 is engaged with the connecting hole 303.

[0028] In one specific embodiment, when a heat source appears on the outside of the door housing 101, such as when a fire occurs, the air inside the air filling cavity 105 is heated, and the thermally expanded air is led out from the air filling pipe 4 into the expansion ring 301, causing the expansion ring 301 to expand and fit the door frame.

[0029] Several compensation rings 304 are also provided on the outer side of the expansion ring 301. When the expansion ring 301 expands, it can lift up the compensation rings 304, so that the compensation rings 304 fit the expansion ring 301 more closely, thereby improving the sealing degree.

[0030] A reinforcing plate 102 is also installed on the inner side of the door housing 101 to increase the overall rigidity of the door housing 101;

[0031] A heat insulation plate 103 is installed on the inner side of the reinforcing plate 102 to reduce heat conduction efficiency;

[0032] A vacuum chamber 104 is also provided on the inner side of the heat insulation plate 103 to further reduce the heat conduction efficiency by utilizing the vacuum.

[0033] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A heat-insulated and airtight fire door, characterized in that, include: The door panel body (1) has a limit strip (2) installed on the outside of the door panel body (1). The door panel body (1) includes a door shell (101). An air filling cavity (105) is provided on the inside of the door shell (101). The air filling cavity (105) is filled with air. When heated, the air expands. Several air filling pipes (4) are provided through the outside of the door shell (101). An expansion sealing mechanism (3) is installed on the inner side of the limiting strip (2), which has expansion performance. The expansion sealing mechanism (3) is connected to the air filling chamber (105) through the filling air pipe (4).

2. The heat-insulating and airtight fire door according to claim 1, characterized in that, The expansion sealing mechanism (3) includes an expansion ring (301), the inner side of which has a cavity, and a limiting ring (302) is installed on the outer side of the expansion ring (301), and the inner side of the limiting ring (302) has a connecting hole (303).

3. The heat-insulating and airtight fire door according to claim 2, characterized in that, One end of the filling air tube (4) engages with the connecting hole (303).

4. The heat-insulated and airtight fire door according to claim 2, characterized in that, Several compensation rings (304) are also provided on the outer side of the expansion ring (301).

5. A heat-insulated and airtight fire door according to claim 1, characterized in that, A reinforcing plate (102) is also installed on the inner side of the door housing (101).

6. A heat-insulated and airtight fire door according to claim 5, characterized in that, A heat insulation plate (103) is installed on the inner side of the reinforcing plate (102).

7. A heat-insulated and airtight fire door according to claim 6, characterized in that, A vacuum chamber (104) is also provided on the inner side of the heat insulation plate (103).

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