Breakable pressure-relief escape window suitable for pressurized building and using method of breakable pressure-relief escape window

Abstract

The invention relates to the technical field of safety evacuation equipment, in particular to a breakable pressure relief escape window suitable for a pressurized building and a using method of the breakable pressure relief escape window. The pressure relief opening is formed in the escape window, and the scheme that pressure relief is conducted firstly and then escape is conducted is adopted, so that the safe escape requirement of people in the pressurized building under the emergency situation can be met; the multi-channel pressure relief opening is formed in the upper area of the escape window, the pressure relief area is large, operation is convenient and fast, pressure relief can be conducted on the supercharged building in time under the emergency condition, and the situation that people break the escape window under the pressure condition and are sucked out of the window to be injured is effectively avoided; the pressure relief plate and the decorative plate are installed on the two sides of the pressure relief opening through screws correspondingly, and replacement is convenient; the pressure relief plate adopts an organic glass plate, a plurality of square-frame-shaped grooves are formed in the pressure relief plate, and steel bars are used for supporting, so that the strength requirement under normal use pressure can be met, and quick window breaking in an emergency can be realized; and multiple positions of the escape window are designed to be of a sealing structure, so that the sealing requirement of a supercharged building can be met.

Description

Technical Field

[0001] The invention relates to the technical field of safe evacuation equipment, and in particular to a breakable pressure relief escape window suitable for pressurized buildings and a use method thereof. Background Art

[0002] Existing escape windows are mainly used in public transportation such as high-speed rail and buses. When an accident occurs and people cannot evacuate through doors, they can quickly open or break the escape windows to escape. Breakable escape windows can be broken by a safety hammer to open an escape passage in an emergency. They are easy to operate and are gaining more and more attention from the public. At the same time, relevant applicants in the field of pressurized buildings have also conducted continuous research and development and exploration.

[0003] The prior art emergency escape window in a pressurized building that breaks quickly discloses: a pre-breaking band is provided around the laminated tempered glass, a breaking hole is provided on the pre-breaking band, and the insert is embedded in the breaking hole to form a closed whole with the laminated tempered glass; by knocking the insert, the pre-breaking band is quickly broken, thereby opening the escape window to achieve the purpose of escape; in addition, the patent document Emergency Escape Window (CN 218716242 U) also discloses a related technical solution. By breaking the escape window of the pressurized building, the purpose of pressure relief and escape is achieved.

[0004] Rapid pressure relief for pressurized buildings is an urgent problem to be faced and solved in emergency situations such as smoke and fire. There is a pressure difference between indoors and outdoors in the use of pressurized buildings, which can theoretically reach 50Kpa. When the existing breakable escape windows are used in pressurized buildings, there are the following disadvantages:

[0005] 1) High strength requirements are placed on building glass in high pressure difference environments. Ordinary escape window glass is difficult to withstand pressurized building pressure, and high-strength glass is difficult to break and takes a long time to break.

[0006] 2) Since the indoor pressure is much higher than the outdoor pressure, the huge pressure difference between indoor and outdoor when the escape window is broken can easily cause the broken objects to splash and cause secondary injuries;

[0007] 3) Pressurized buildings have high requirements for the airtightness of doors and windows. After using existing technology to break and release pressure in an emergency, they cannot be used again, and the cost of repair and restoration is very high;

[0008] The existing window-breaking pressure relief method has poor safety, the remaining glass debris on the window frame can easily cause personal injury, and the broken escape window cannot be reused, so the cost of use is high. Summary of the invention

[0009] The technical problem to be solved by the present invention is: to provide a breakable pressure relief escape window suitable for pressurized buildings and a method of using the same, which is easy to operate, has high reliability, low cost for replacing parts, and is convenient for repeated use. Under normal working conditions, it can adapt to the strength and airtightness requirements of a high pressure difference environment, and in an emergency, through an easily breakable pressure relief plate structure in combination with a multi-channel pressure relief port, the pressurized building can be relieved of pressure in a timely manner, ensuring that people in the building can smoothly open the escape window and evacuate safely.

[0010] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0011] 1. A breakable pressure relief escape window suitable for pressurized buildings

[0012] The present invention provides a breakable pressure relief escape window suitable for a pressurized building, comprising an outer window frame 5 welded and fixed to the steel structure of the pressurized building, an inner window frame 4 is provided in the middle of the outer window frame 5, and the inner window frame 4 is hinged to the outer window frame 5 through a hinge 6; a lock 3 for opening and locking the inner window frame 4 is provided on the side of the outer window frame 5, a multi-channel pressure relief port 1 is provided on the upper part of the inner window frame 4, a pressure relief plate 11 is provided on the indoor side of the multi-channel pressure relief port 1, a plurality of square frame-shaped grooves 14 are arranged on the pressure relief plate 11 at equal intervals in the horizontal direction, and a sealing rubber 12 is provided between the pressure relief plate 11 and the multi-channel pressure relief port 1; in a pressurized state, the air pressure compresses the pressure relief plate 11 to achieve a tight seal through the sealing rubber 12; in an emergency state, an external force acts on the pressure relief plate 11 to break it with the groove 14 as a weak surface, thereby forming a channel for rapid pressure relief of the pressurized gas.

[0013] Preferably, a laminated glass 2 is provided in the middle of the inner window frame 4, and the laminated glass 2 is installed in the middle of the inner window frame 4 by means of a pressing frame and a sealing strip.

[0014] Preferably, the pressure relief plate 11 is made of organic glass, the square frame groove 14 is evenly provided with screw holes along the four edges, and the pressure relief plate 11 and the sealing rubber 12 are fixedly installed on the upper part of the indoor side of the inner window frame 4 through multiple sets of screws 13 cooperating with the screw holes.

[0015] Preferably, a decorative plate 15 of matching size is provided on the outdoor side of the multi-channel pressure relief port 1, and the decorative plate 15 is fixedly connected to the upper outdoor side of the inner window frame 4 by multiple sets of screws 16, and a fracture zone is provided on the outer circle of each set of screws 16 on the decorative plate 15.

[0016] Preferably, the multi-channel pressure relief port 1 has a square-shaped integral pressure relief channel 17 on one side close to the decorative panel 15, and has a plurality of rectangular separated pressure relief channels 18 on one side close to the pressure relief plate 11. The plurality of rectangular separated pressure relief channels 18 are all connected to the integral pressure relief channel 17, and the positions of the rectangular separated pressure relief channels 18 correspond to the positions of the frame-shaped grooves 14 on the pressure relief plate 11.

[0017] Preferably, the plurality of rectangular separated pressure relief channels 18 are separated by vertical steel bars 19 , and the vertical steel bars 19 are supported on a surface of the pressure relief plate 11 close to the outdoor side.

[0018] Preferably, the thickness of the pressure relief plate 11 is adapted to the preset pressure in the pressurized building, and the thickness of the decorative plate 15 is less than one tenth of the thickness of the pressure relief plate 11 .

[0019] Preferably, a sealing strip 41 and a sealing ring 42 are provided between the inner window frame 4 and the outer window frame 5 .

[0020] 2. A method for using a breakable pressure relief escape window suitable for pressurized buildings

[0021] Based on the same inventive concept, the present invention also provides a method for using the above-mentioned breakable pressure relief escape window, which specifically comprises the following steps:

[0022] S1, under normal working conditions, the inner window frame is closed by the lock, and the pressure in the pressurized building compresses the sealing strip and the sealing ring between the inner window frame and the outer window frame, and compresses the sealing rubber between the pressure relief plate and the pressure relief port;

[0023] S2: In case of emergency, a window-breaking hammer is used to sequentially strike the multiple square-shaped grooves on the indoor pressure relief plate, so that the pressure relief plate breaks along the square-shaped grooves and flies out to the outdoor side under the action of pressure;

[0024] S3, the broken pressure relief plate impacts the decorative plate. Since there is a fracture zone preset at the screw fixing position of the decorative plate, the decorative plate flies out to the outdoor side together with the pressure relief plate under the pressure and the impact of the pressure relief plate, forming a pressure relief channel;

[0025] S4, the pressure in the pressurized building is released through the pressure relief channel to make the indoor and outdoor pressures consistent;

[0026] S5, open the inner window frame by locking, so that people in the pressurized building can evacuate to the outdoor safe area through the escape window;

[0027] S6. When using again, install new pressure relief plates and decorative plates on both sides of the pressure relief port with screws, and close the lock to reset the escape window.

[0028] Furthermore, under normal working conditions, the vertical steel bar disposed on the side of the pressure relief port close to the pressure relief plate is evenly supported on the side of the pressure relief plate close to the outdoor side.

[0029] Compared with the prior art, the present invention has the following main advantages:

[0030] 1. The present invention provides a breakable pressure relief escape window suitable for pressurized buildings and a method for using the same. By arranging a pressure relief port on the escape window and adopting a scheme of pressure relief first and then escape, the escape window can be opened smoothly, which can meet the safety escape needs of people inside the pressurized building in an emergency.

[0031] 2. The multi-channel pressure relief port of the present invention is arranged in the upper area of ​​the escape window, with a large pressure relief area and convenient operation. It can timely relieve pressure on the pressurized building in an emergency, effectively preventing people from being sucked out of the window and causing injuries when the escape window is broken under pressure; and the pressure relief plate and the decorative plate of the present invention are respectively installed on both sides of the pressure relief port by screws, which is convenient to replace, so that the escape window of the present invention can be used repeatedly;

[0032] 3. The pressure relief plate of the present invention adopts an organic glass plate, on which multiple prescription frame-shaped grooves are arranged, and supported by steel bars, which can not only meet the strength requirements under normal use pressure, but also achieve rapid window breaking in emergency situations; and the escape window of the present invention adopts a sealing structure design in many places, which can meet the airtightness requirements of pressurized buildings;

[0033] 4. The groove cross-section of the pressure relief plate of the present invention is arc-shaped, and the size of the groove is adapted to the size of the separate pressure relief channel. The grooves are evenly arranged along the edge of each separate pressure relief channel, respectively, to ensure that the pressure relief plate can be completely broken along the edge of the separate pressure relief channel, and the cross-section of the remaining part is relatively flat, which is not easy to hurt people. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an overall schematic diagram of a breakable pressure relief escape window in an embodiment of the present invention;

[0035] Figure 2 is a cross-sectional view of a pressure relief port portion in an embodiment of the present invention;

[0036] Figure 3 Schematic diagram of a separate pressure relief channel in an embodiment of the present invention;

[0037] Figure 4 The figure is a flow chart of the method used in the embodiment of the present invention.

[0038] In the figure: 1. multi-channel pressure relief port, 2. laminated glass, 3. lock, 4. inner window frame, 5. outer window frame, 6. hinge, 11. pressure relief plate, 12. sealing rubber, 13. screw one, 14. square frame groove, 15. decorative plate, 16. screw two, 17. integral pressure relief channel, 18. rectangular separated pressure relief channel, 19. vertical steel bar, 41. sealing rubber strip, 42. sealing ring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0041] Embodiment 1: This embodiment provides a breakable pressure relief escape window suitable for pressurized buildings, such as Figure 1 As shown, it mainly includes: an outer window frame 5, an inner window frame 4 and a multi-channel pressure relief port 1;

[0042] The outer window frame 5 is welded and fixedly connected to the pressurized building steel structure, an inner window frame 4 is provided in the middle of the outer window frame 5, and the inner window frame 4 is hinged to the outer window frame 5 through a hinge 6; a lock 3 for opening and locking the inner window frame 4 is provided on the side of the outer window frame 5; a laminated glass 2 is provided in the middle of the inner window frame 4, and the laminated glass 2 is installed in the middle of the inner window frame 4 by pressing the frame and the sealing strip;

[0043] Among them, a multi-channel pressure relief port 1 is provided on the top of the inner window frame 4. In an emergency, the present application releases pressure on the pressurized building by breaking the pressure relief plate 11 installed on the multi-channel pressure relief port 1. When the indoor and outdoor pressures are consistent, the inner window frame 4 is opened by the lock 3 to achieve safe escape; there is no need to break the laminated glass 2 in the middle of the inner window frame 4.

[0044] Furthermore, a pressure relief plate 11 is provided inside the multi-channel pressure relief port 1, and a plurality of square frame-shaped grooves 14 are arranged horizontally and evenly at intervals on the pressure relief plate 11, and a sealing rubber 12 is provided between the pressure relief plate 11 and the multi-channel pressure relief port 1;

[0045] Furthermore, the pressure relief plate 11 is specifically made of organic glass, and the square frame-shaped groove 14 is evenly provided with screw holes along the edges thereof. The pressure relief plate 11 and the sealing rubber 12 are fixedly mounted on the upper part of the indoor side of the inner window frame 4 by means of a plurality of sets of screws 13 cooperating with the screw holes;

[0046] Furthermore, a decorative plate 15 of matching size is provided on the outdoor side of the multi-channel pressure relief port 1, and the decorative plate 15 is fixedly connected to the upper outdoor side of the inner window frame 4 by multiple sets of screws 16, and a fracture zone is provided on the outer circle of each set of screws 16 on the decorative plate 15.

[0047] Specifically, the square frame-shaped groove 14 provided on the pressure relief plate 11 can be conveniently and quickly broken open, so that the pressure relief plate 11 flies out to the outdoor side under the high indoor pressure and hits the decorative plate 15; since the decorative plate 15 is provided with a fracture zone, the decorative plate will fly out together with the pressure relief plate under the impact of the high indoor pressure and the broken pressure relief plate, thereby realizing the rapid pressure relief of the pressurized building;

[0048] Moreover, this structure enables the pressure relief plate 11 and the decorative plate 15 to fly outward, thereby effectively preventing indoor personnel from being injured.

[0049] Furthermore, the multi-channel pressure relief port 1 has a square frame-shaped integral pressure relief channel 17 on one side close to the decorative plate 15, and has a plurality of rectangular separated pressure relief channels 18 on one side close to the pressure relief plate 11. The plurality of rectangular separated pressure relief channels 18 are all connected to the integral pressure relief channel 17, and the positions of the rectangular separated pressure relief channels 18 correspond to the positions of the frame-shaped grooves 14 on the pressure relief plate 11;

[0050] Furthermore, the plurality of rectangular separated pressure relief channels 18 are separated by vertical steel bars 19 , and the vertical steel bars 19 are supported on a surface of the pressure relief plate 11 close to the outdoor side.

[0051] Optionally, the cross-section of the square-shaped groove 14 is arc-shaped, and the size of the square-shaped groove 14 is adapted to the rectangular separated pressure relief channel 18. Each square-shaped groove 14 is respectively arranged along the edge of each rectangular separated pressure relief channel 18 to ensure that the pressure relief plate can be completely broken along the edge of the rectangular separated pressure relief channel, and the cross-section of the remaining part is relatively flat and not easy to hurt people.

[0052] Under normal working conditions, the pressure relief plate is supported by vertical steel bars, which can adapt to the strength requirements of the high pressure difference environment. In an emergency, the combined structure formed by connecting multiple separate pressure relief channels with the integral pressure relief channel can make the broken pressure relief plate fly out to the outside in a more concentrated manner in the correct direction, and then successfully break through the decorative panel, ensuring the smooth formation of the pressure relief channel.

[0053] Furthermore, the thickness of the pressure relief plate 11 is adapted to the preset pressure in the pressurized building to meet the environmental requirements of the pressurized building; and the thickness of the decorative plate 15 is less than one tenth of the thickness of the pressure relief plate 11 to further ensure that the decorative plate can be broken open smoothly in an emergency.

[0054] Furthermore, a sealing strip 41 and a sealing ring 42 are provided between the inner window frame 4 and the outer window frame 5 to meet the sealing requirements of the pressurized building.

[0055] Embodiment 2: This embodiment provides a breakable pressure relief escape window suitable for pressurized buildings, such as Figure 1 As shown, the outer window frame 5 is welded to the building steel structure, the inner window frame 4 is connected to the outer window frame 5 by a high-strength hinge 6; the lower laminated glass 2 is fixed to the inner window frame 4 by a pressure plate, a sealing strip and screws to ensure air tightness. The lock buckle 3 adopts a high-pressure tightening force structural design to ensure good airtightness after the window is locked.

[0056] like Figure 2 As shown, the upper pressure relief port 1 is located directly above the laminated glass 2, and adopts a multi-channel design. A square pressure relief plate 11 is set on the indoor side, which is made of organic glass. Three square frame grooves 14 are evenly arranged on the pressure relief plate, and screw holes are opened around the square frame grooves; a sealing rubber 12 is set between the pressure relief plate 11 and the inner window frame 4; the pressure relief plate 11 and the sealing rubber 12 are fixed to the inner window frame 4 through screws 13 and the screw holes. A decorative plate 15 is set on the outdoor side, which is fixed to the inner window frame 4 through screws 16; a fracture zone is preset near screws 16 on the decorative plate 15.

[0057] Furthermore, the upper pressure relief port 1 has an integral pressure relief channel 17 on the side close to the decorative panel 15; and a separate pressure relief channel 18 on the side close to the pressure relief plate 11. The separate pressure relief channel 18 corresponds to the position of the frame-shaped groove 14 above the pressure relief plate 11, and is connected to the integral pressure relief channel 17. The separate pressure relief channels 18 are separated by vertical steel bars 19; and a sealing strip 41 and a sealing ring 42 are provided between the inner window frame 4 and the outer window frame 5 to ensure the integral airtightness.

[0058] Here’s how it works:

[0059] Under normal working conditions, the escape window is in a locked state. Since the indoor pressure of the pressurized building is higher than the outdoor pressure, the sealing strip 41, the sealing ring 42 and the sealing rubber 12 between the inner and outer window frames are compressed, which increases the sealing effect and makes the pressurized building have good airtightness; the lower part of the escape window adopts multi-layer laminated glass 2 to ensure that it has high strength and will not break under normal working pressure; the pressure relief plate 11 adopts a thicker organic glass plate, and a vertical steel bar 19 is used on the back for support, so that it will not break under normal working pressure.

[0060] In case of emergency, the three square frame-shaped grooves 14 on the indoor pressure relief plate 11 can be hit in sequence with a window breaker hammer. Because the grooves are weak points, the pressure relief plate 11 will instantly break along the grooves and fly out under the combined effect of the impact force and the high indoor pressure. The outdoor decorative plate 15 is thinner and has a fracture zone preset at the screw fixing point. Under the impact of the indoor high pressure and the broken pressure relief plate, it will fly out with the pressure relief plate, eventually forming a pressure relief channel. After the rapid pressure relief is completed, the indoor and outdoor pressures are the same, and the escape window can be easily opened to escape to the outdoor safe area.

[0061] Optionally, the pressure relief plate of the pressure relief port adopts an integral square structure or a separated circular structure, and the number of pressure relief ports is adjusted according to the volume of the pressurized building.

[0062] Optionally, the pressure relief plate is made of organic glass with good toughness and easy processing, or hard PVC and other materials.

[0063] Optionally, the three prescription frame-shaped grooves used on the pressure relief plate are evenly distributed horizontally.

[0064] Embodiment 3, based on the same inventive concept, this embodiment also provides a method for using the above-mentioned breakable pressure relief escape window, such as Figure 4 As shown, the specific steps include:

[0065] Step 1: Under normal working conditions, the inner window frame is closed by the lock, and the pressure in the pressurized building compresses the sealing strip and the sealing ring between the inner window frame and the outer window frame, and compresses the sealing rubber between the pressure relief plate and the pressure relief port, and cooperates with the vertical steel bar support on the outer side of the pressure relief plate to meet the strength and airtightness requirements of the high pressure difference environment;

[0066] Step 2: When an emergency occurs, a window-breaking hammer is used to sequentially strike the multiple square-shaped grooves on the indoor pressure relief plate, so that the pressure relief plate breaks along the square-shaped grooves and flies out to the outdoor side along the multiple-channel pressure relief ports under the action of pressure;

[0067] Step 3: The broken pressure relief plates respectively impact corresponding positions on the decorative plate along the multi-channel pressure relief ports. Since fracture zones are preset at corresponding positions on the decorative plate, the decorative plate flies out to the outdoor side together with the pressure relief plate under the pressure and the impact of the pressure relief plate, forming a pressure relief channel.

[0068] Step 4: The pressure in the pressurized building is released through the pressure relief channel to make the indoor and outdoor pressures consistent;

[0069] Step 5: Open the inner window frame by locking it, so that people in the pressurized building can evacuate to a safe area outdoors through the escape window;

[0070] Step six, when using it again, install new pressure relief plates and decorative plates on both sides of the pressure relief port with screws, and close the lock to reset the escape window. During the use of this application, there is no need to break the laminated glass in the middle of the inner window frame, and the pressure relief plates and decorative plates are easy to replace, so that the escape window as a whole can be reused repeatedly, reducing the cost of use.

[0071] Furthermore, under normal working conditions, the vertical steel bar arranged on the side of the pressure relief port close to the pressure relief plate is evenly supported on the side of the pressure relief plate close to the outdoor side, and the pressure relief plate adopts a thicker plexiglass plate, which can ensure that it has high strength under normal working pressure and will not break.

[0072] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0073] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A breakable pressure relief escape window suitable for a pressurized building, comprising an outer window frame (5) welded and fixed to the steel structure of the pressurized building, an inner window frame (4) being provided in the middle of the outer window frame (5), and the inner window frame (4) being hinged to the outer window frame (5) through a hinge (6); a lock buckle (3) for opening and locking the inner window frame (4) being provided on the side of the outer window frame (5), characterized in that: A multi-channel pressure relief port (1) is provided on the upper part of the inner window frame (4), a pressure relief plate (11) is provided on the indoor side of the multi-channel pressure relief port (1), a plurality of square frame-shaped grooves (14) are arranged at equal intervals in the horizontal direction on the pressure relief plate (11), and a sealing rubber (12) is provided between the pressure relief plate (11) and the multi-channel pressure relief port (1); in a pressurized state, the air pressure compresses the pressure relief plate (11) to achieve a tight seal through the sealing rubber (12); in an emergency state, an external force acts on the pressure relief plate (11) to break it with the groove (14) as a weak surface, thereby forming a channel for rapid pressure relief of the pressurized gas.

2. A breakable pressure relief escape window suitable for pressurized buildings according to claim 1, characterized in that: A laminated glass (2) is provided in the middle of the inner window frame (4), and the laminated glass (2) is installed in the middle of the inner window frame (4) by means of a pressing frame and a sealing strip.

3. A breakable pressure relief escape window suitable for pressurized buildings according to claim 2, characterized in that: The pressure relief plate (11) is specifically made of organic glass, and the square frame-shaped groove (14) is evenly provided with screw holes along the edges thereof. The pressure relief plate (11) and the sealing rubber (12) are fixedly mounted on the upper part of the indoor side of the inner window frame (4) by means of a plurality of sets of screws (13) which cooperate with the screw holes.

4. A breakable pressure relief escape window suitable for pressurized buildings according to claim 2, characterized in that: A decorative plate (15) of matching size is provided on the outdoor side of the multi-channel pressure relief port (1); the decorative plate (15) is fixedly connected to the upper outdoor side of the inner window frame (4) by means of a plurality of sets of screws (16); and a fracture band is provided on the decorative plate (15) along the outer ring of each set of screws (16).

5. A breakable pressure relief escape window suitable for pressurized buildings according to claim 4, characterized in that: The multi-channel pressure relief port (1) has a square frame-shaped integral pressure relief channel (17) on the side close to the decorative plate (15), and has a plurality of rectangular separated pressure relief channels (18) on the side close to the pressure relief plate (11). The plurality of rectangular separated pressure relief channels (18) are all connected to the integral pressure relief channel (17), and the positions of the rectangular separated pressure relief channels (18) correspond to the positions of the frame-shaped grooves (14) above the pressure relief plate (11).

6. A breakable pressure relief escape window suitable for pressurized buildings according to claim 5, characterized in that: The plurality of rectangular separated pressure relief channels (18) are separated by vertical steel bars (19), and the vertical steel bars (19) are supported on a surface of the pressure relief plate (11) close to the outdoor side.

7. A breakable pressure relief escape window suitable for pressurized buildings according to claim 5, characterized in that: The thickness of the pressure relief plate (11) is adapted to the preset pressure in the pressurized building, and the thickness of the decorative plate (15) is less than one tenth of the thickness of the pressure relief plate (11).

8. The breakable pressure relief escape window suitable for pressurized buildings according to claim 1, characterized in that: A sealing strip (41) and a sealing ring (42) are provided between the inner window frame (4) and the outer window frame (5).

9. A method for using the breakable pressure relief escape window as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1, under normal working conditions, the inner window frame is closed by the lock, and the pressure in the pressurized building compresses the sealing strip and the sealing ring between the inner window frame and the outer window frame, and compresses the sealing rubber between the pressure relief plate and the pressure relief port; S2: In case of emergency, a window-breaking hammer is used to sequentially strike the multiple square-shaped grooves on the indoor pressure relief plate, so that the pressure relief plate breaks along the square-shaped grooves and flies out to the outdoor side under the action of pressure; S3, the broken pressure relief plate impacts the decorative plate. Since there is a fracture zone preset at the screw fixing position of the decorative plate, the decorative plate flies out to the outdoor side together with the pressure relief plate under the pressure and the impact of the pressure relief plate, forming a pressure relief channel; S4, the pressure in the pressurized building is released through the pressure relief channel to make the indoor and outdoor pressures consistent; S5, open the inner window frame by locking, so that people in the pressurized building can evacuate to the outdoor safe area through the escape window; S6. When using again, install new pressure relief plates and decorative plates on both sides of the pressure relief port with screws, and close the lock to reset the escape window.

10. The method of use according to claim 9, characterized in that: Under normal working conditions, the vertical steel bars arranged on the side of the pressure relief port close to the pressure relief plate are evenly supported on the side of the pressure relief plate close to the outdoor side.

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