A fire protection window

Abstract

This invention discloses a fireproof window, including a fireproof window frame, a fireproof window sash within the frame, and fireproof glass within the sash. The fireproof glass has a hollow structure, and an installation cavity is provided within the sash. A bladder is housed within the installation cavity, communicating with the cavity of the fireproof glass. A driving component is also provided within the installation cavity, which can pump fire-retardant liquid from the bladder into the cavity of the fireproof glass. In the event of a fire, the driving component can compress the bladder, causing it to spray the fire-retardant liquid into the cavity of the fireproof glass, thereby achieving better fire resistance. Compared with existing technologies, this invention's fireproof window can actively compress the internal bladder during a fire, causing the fire-retardant liquid within the bladder to be sprayed into the fireproof glass, thus improving the overall fire resistance of the window.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, and in particular, to a fireproof window. Background Technology

[0002] Fire-resistant windows are windows that, together with their frames, can meet the requirements for fire resistance stability and fire resistance integrity for a certain period of time. Fire-resistant windows should be used on the exterior walls of two buildings where the fire separation distance is insufficient, or between spaces separated by firewalls, when lighting and ventilation are required.

[0003] However, fire-resistant windows generally achieve passive fire protection through fire-resistant materials. For example, a fire-resistant window may consist of a steel frame, a steel sash, and fire-resistant glass fixed to the steel sash. In other words, the fire-resistant performance of a fire-resistant window depends entirely on the fire-resistant properties of the materials themselves. During a fire, however, fire-resistant windows cannot actively prevent fire, and their actual fire-resistant performance is relatively poor. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fireproof window.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A fireproof window includes a fireproof window frame, a fireproof window sash within the fireproof window frame, fireproof glass within the fireproof window sash, the fireproof glass having a hollow structure, an installation cavity within the fireproof window sash, a bladder within the installation cavity, the bladder communicating with the cavity of the fireproof glass, and a driving assembly within the installation cavity, which can press the fireproof liquid within the bladder into the cavity of the fireproof glass.

[0007] The drive assembly includes an extrusion block slidably disposed within the mounting cavity, and a drive spring connected to the extrusion block. The drive spring is made of shape memory alloy and can drive the extrusion block to slide when heated.

[0008] The mounting cavity is provided with a slide rail, and the extrusion block is slidably connected to the slide rail.

[0009] The end face of the extrusion block facing the bladder is provided with an inclined surface.

[0010] Both the bladder and the drive assembly are located at the bottom of the fireproof window sash, and the bladder also has an openable and closable reflux hole.

[0011] The drive spring is arranged in an L-shape.

[0012] The drive spring is arranged vertically, and a cable connects the drive spring to the compression block.

[0013] A drainage plate is inclinedly installed at the bottom of the cavity of the fireproof glass.

[0014] A guide wheel is also rotatably disposed inside the mounting cavity, and the cable abuts against the outer periphery of the guide wheel.

[0015] The beneficial effects of this invention are: when a fire occurs, the airbag can be squeezed by the driving component, and then the airbag can spray the fire-retardant liquid inside into the cavity of the fire-resistant glass, thereby achieving better fire resistance performance of the fire-resistant glass. Compared with the prior art, the fire-resistant window of this invention can actively squeeze the internal airbag during a fire, causing the fire-retardant liquid inside the airbag to be sprayed into the fire-resistant glass, thereby improving the overall fire resistance performance of the fire-resistant window. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0017] Figure 2 This is a schematic diagram of the cable structure in Example 1;

[0018] Figure 3 This is a schematic diagram of the sealing plate in Example 1;

[0019] Figure 4 This is a schematic diagram of the sliding sheet in Example 1;

[0020] Figure 5 This is a schematic diagram of the structure of Example 2.

[0021] Reference numerals: 1. Fireproof window frame; 2. Fireproof window sash; 3. Fireproof glass; 4. Mounting cavity; 5. Enclosure; 6. Drive assembly; 7. Extrusion block; 8. Drive spring; 9. Slide rail; 10. Inclined surface; 11. Return hole; 12. Cable; 13. Drain plate; 14. Guide wheel; 15. Sealing plate; 16. Sliding plate; 17. Contact switch one; 18. Contact switch two; 19. Contact switch three; 20. Contact switch four; 21. Contact switch five; 22. Wire cutting mechanism. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1:

[0024] like Figure 1 , Figure 2As shown, a fireproof window includes a fireproof window frame 1, a fireproof window sash 2 disposed within the fireproof window frame 1, and fireproof glass 3 disposed within the fireproof window sash 2. For example, the fireproof window frame 1 can preferably be a steel window frame, and the fireproof window sash 2 can preferably be a steel window sash. Furthermore, the fireproof glass 3 can preferably be a hollow structure, for example, by sandwiching two pieces of fireproof glass 3 together to form the required internal cavity. The assembly relationship of the fireproof window frame 1, the fireproof window sash 2, and the fireproof glass 3 is prior art and will not be described in detail in this embodiment.

[0025] To achieve the active fire protection function of the fireproof window, this disclosure also includes an installation cavity 4 within the fireproof window sash 2, and a bladder 5 within the installation cavity 4. The outlet of the bladder 5 is connected to the cavity of the fireproof glass 3. Furthermore, a driving assembly 6 is installed within the installation cavity 4. This driving assembly 6 can compress the bladder 5, thereby forcing the fire-retardant liquid within the bladder 5 into the cavity of the fireproof glass 3. For example, the fire-retardant liquid can be water.

[0026] Therefore, when a fire occurs, the drive assembly 6 can compress the capsule 5, which then sprays the fire-retardant liquid inside into the cavity of the fire-resistant glass 3, thereby achieving better fire resistance of the fire-resistant glass 3. It is evident that... Figure 1 The arrow shown in the image indicates the path of the fire retardant liquid spray.

[0027] In some embodiments, the drive assembly 6 includes a compression block 7 slidably disposed within the mounting cavity 4, the end face of the compression block 7 facing the bladder 5 having a bevel 10. Furthermore, a drive spring 8, made of shape memory alloy, is connected to the compression block 7. Shape memory alloy, also known as memory metal, is a special metallic material that undergoes plastic deformation within a certain temperature range and then recovers its original macroscopic shape within another temperature range.

[0028] Therefore, when the drive spring 8 is heated, it will return to its original shape, thereby driving the compression block 7 to slide. The sliding compression block 7 can more stably and reliably compress the bladder 5 through the inclined plane 10, ultimately driving the fireproof liquid inside the bladder 5 to be sprayed into the cavity of the fireproof glass 3.

[0029] For example, when the drive spring 8 is in a stretched state under plastic deformation, the compression block 7 is located away from the bladder 5. When the drive spring 8 is heated, it will contract and return to its original shape. Then, the drive spring 8 will pull the compression block 7 to slide towards the bladder 5, thereby compressing the bladder 5.

[0030] In some embodiments, the aforementioned bladder 5 and drive assembly 6 are both located at the bottom of the fireproof window sash 2, and the bladder 5 also has an openable and closable return hole 11. For example, a slide rail 9 is provided at the bottom of the mounting cavity 4, and the compression block 7 is slidably adapted within the slide rail 9, so that the sliding direction of the compression block 7 can be stably guided by the slide rail 9.

[0031] Therefore, when the heat source disappears, the return hole 11 can be opened, and the fire retardant liquid inside the fireproof glass 3 can flow back into the chamber 5 through the return hole 11 for use in the next active fireproofing operation of the chamber 5. Preferably, a guide plate 13 is inclinedly provided at the bottom of the cavity of the fireproof glass 3, so that the fire retardant liquid can flow back into the chamber 5 more reliably under the guidance of the guide plate 13, and the situation where fire retardant liquid remains in the fireproof glass 3 and causes poor glass visibility is less likely to occur.

[0032] See Figure 3 For example, a sealing piece 15 can be slidably installed on the fireproof window sash 2, which can cover and open the return hole 11.

[0033] See Figure 1 To achieve better thermal driving performance, the drive spring 8 can preferably be arranged in an L-shape. This allows the drive spring 8 to have a larger contraction stroke, thereby applying a greater driving force to the extrusion block 7.

[0034] See Figure 2 In another preferred application, the drive spring 8 is arranged vertically within the fireproof window sash 2. For example, if the vertical length of the fireproof window sash 2 is greater than its width, arranging the drive spring 8 vertically maximizes the retraction stroke. In this case, to ensure a stable driving force on the compression block 7 when the drive spring 8 retracts, the drive spring 8 and the compression block 7 are connected by a cable 12, and a guide wheel 14 is rotatably mounted within the mounting cavity 4, with the cable 12 abutting against the outer periphery of the guide wheel 14. Therefore, when the drive spring 8 retracts due to heat, the cable 12, guided by the guide wheel 14, will more smoothly pull the compression block 7 to slide.

[0035] Understandable, see [link / reference] Figure 4 In a preferred embodiment, a reset elastic element (not shown) may also be connected to the compression block 7. When the heat source disappears, the reset elastic element can more quickly restore the compression block 7 to its initial position. For example, the compression block 7 may also be configured to have a sliding piece 16 protruding from the fireproof window sash 2, which allows the compression block 7 to be manually and quickly restored to its initial position.

[0036] Example 2:

[0037] like Figure 5As shown, the difference between Embodiment 2 and Embodiment 1 is that a solenoid valve (not shown) is installed inside the return hole 11. The opening and closing of the return hole 11 is controlled by an electrical signal. For example, a contact switch 17 is installed on the slide rail 9. When the extrusion block 7 completes the extrusion action and detaches from the bladder 5, the extrusion block 7 will come into contact with the contact switch 17. The contact switch 17 controls the solenoid valve (not shown) to open the return hole 11 through the controller (not shown). Subsequently, the fireproof liquid inside the fireproof glass 3 can re-enter the bladder 5 through the return hole 11.

[0038] In addition, a second contact switch 18 is also provided on the slide rail 9. As the extrusion block 7 continues to slide, the extrusion block 7 will come into contact with the second contact switch 18. Subsequently, the second contact switch 18 controls the solenoid valve through the controller to close the return hole 11 again. It should be understood that when the heat source disappears, although the extrusion block 7 will still come into contact with the second contact switch 18 and the first contact switch 17 in sequence, the solenoid valve will not respond to the electrical signals of the second contact switch 18 and the first contact switch 17 during the return process of the extrusion block 7 by encoding the controller.

[0039] On the slide rail 9, on the other side of the bladder 5, there are also contact switches 19 and 20. Contact switch 19 has the same function as contact switch 17, and contact switch 20 has the same function as contact switch 18. Similarly, during the stroke of the extrusion block 7 sliding out from the initial position, the electrical signals of contact switches 19 and 20 are not responded to by the solenoid valve.

[0040] Therefore, when a fireproof window is exposed to a heat source, it will undergo the following movement process:

[0041] The drive spring 8 is heated and pulls the extrusion block 7 to move to one side of the bladder 5. This can drive the extrusion block 7 to squeeze the fireproof liquid in the bladder 5 into the fireproof glass 3 to cool the fireproof window. During this period, the electrical signals of the contact switch 3 19 and the contact switch 4 20 are not responded to by the solenoid valve.

[0042] As the squeezing block 7 continues to slide, the squeezing block 7 sequentially triggers contact switch 17 and contact switch 2 18, causing the fireproof liquid inside the fireproof glass 3 to be refilled into the bladder 5.

[0043] As the heat source gradually disappears, the drive spring 8 expands again, and the compression block 7 begins to return under the action of the elastic reset element (not shown). During this process, the compression block 7 will compress the bladder 5 again, causing the fire-retardant liquid inside the bladder 5 to be sprayed back into the fireproof glass 3, thereby achieving a further cooling of the residual heat in the fireproof window. During this period, the solenoid valve does not respond to the electrical signals of contact switch 18 and contact switch 17.

[0044] As the extrusion block 7 continues its return journey, it will sequentially trigger contact switch 3 19 and contact switch 4 20, causing the fireproof liquid to refill the bladder 5, at which point the fireproof window is in its initial state.

[0045] In summary, the fireproof window disclosed in this embodiment can achieve automatic cooling of the fireproof window when a heat source is generated, and automatic cooling of the fireproof window a second time when the heat source disappears. The overall abnormal heating time of the fireproof window is greatly shortened, thereby improving the fireproof performance of the fireproof window and significantly extending its service life.

[0046] Preferably, the inclined surface 10 is symmetrically arranged on the extrusion block 7, and under the guidance of the inclined surface 10, it is less likely that the capsule 5 and the extrusion block 7 will interfere excessively.

[0047] In some implementation schemes, based on the scheme of pulling the compression block 7 by the cable 12 in Embodiment 1, the slide rail 9 is further configured to have an extreme position at the other end of the initial position. It can be understood that by calculating the thermal expansion coefficient of the drive spring 8, the temperature range that the fireproof window will experience when the compression block 7 slides to the extreme position can be obtained. Therefore, the extreme position can be selected as the position corresponding to the extreme temperature that the fireproof window can withstand.

[0048] For example, a contact switch 21 is provided at the extreme position, and a wire-cutting mechanism 22 is also provided in the mounting cavity 4. The wire-cutting mechanism 22 may include opposing blades and a drive member for driving the two blades to close, the drive member being electrically connected to the contact switch 21. It is understood that the cable will pass between the two blades and be connected to the springs and compression blocks at both ends respectively.

[0049] When the compression block 7 moves to its limit position, it will trigger the contact switch 21. Then, the wire cutting mechanism 22 will respond to the electrical signal and cut the cable 12. At this time, the compression block 7 will directly enter the return motion under the action of the elastic reset member, so as to more quickly re-spray the fireproof liquid in the bladder 5 into the fireproof glass 3, thereby achieving emergency cooling of the fireproof window.

[0050] Preferably, after contact switch 5 21 is triggered, contact switches 3 19 and 4 20 will not respond to the return trigger of the extrusion block 7. This allows the fire retardant liquid to fill the fireproof glass 3 instead of returning to be stored in the capsule 5, thereby maximizing the heat absorption effect of the fire retardant liquid and, in particular, buying more time for the effective fire resistance performance of the fireproof window.

[0051] The above description is merely a preferred embodiment of the present invention. 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 concept described herein through the above teachings or related technologies or knowledge. 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 fireproof window, comprising a fireproof window frame (1), wherein a fireproof window sash (2) is provided within the fireproof window frame (1), and fireproof glass (3) is provided within the fireproof window sash (2), characterized in that: The fireproof glass (3) has a hollow structure. The fireproof window sash (2) is provided with an installation cavity (4). The installation cavity (4) is provided with a bladder (5). The bladder (5) is connected to the cavity of the fireproof glass (3). The installation cavity (4) is also provided with a driving component (6). The driving component (6) can push the fireproof liquid in the bladder (5) into the cavity of the fireproof glass (3). The drive assembly (6) includes a pressing block (7) slidably disposed in the mounting cavity (4), and a drive spring (8) is connected to the pressing block (7). The drive spring (8) is made of shape memory alloy, and the drive spring (8) can drive the pressing block (7) to slide when heated. A slide rail (9) is provided inside the mounting cavity (4), and the pressing block (7) is slidably connected to the slide rail (9); The bladder (5) and the drive assembly (6) are both located at the bottom of the fireproof window sash (2), and the bladder (5) also has an openable and closable reflux hole (11). A solenoid valve is installed inside the reflux hole (11); The slide rail (9) is sequentially provided with contact switch four (20), contact switch three (19), contact switch one (17) and contact switch two (18), and the contact switch four (20), contact switch three (19), contact switch one (17) and contact switch two (18) are all electrically connected to the solenoid valve through the controller; When the squeezing block (7) continues to slide after squeezing the bladder, the squeezing block (7) triggers contact switch one (17) and contact switch two (18) in sequence. After the contact switch (17) is triggered, the controller controls the solenoid valve to open the return hole (11); After the second contact switch (18) is triggered, the controller controls the solenoid valve to close the return hole (11); When the extrusion block (7) slides back due to the disappearance of the heat source, the extrusion block (7) extrudes the re-expanded bladder again; and the extrusion block (7) triggers contact switch three (19) and contact switch four (20) in sequence. After the contact switch three (19) is triggered, the controller controls the solenoid valve to open the return hole (11); After the contact switch four (20) is triggered, the controller controls the solenoid valve to close the return hole (11).

2. The fireproof window according to claim 1, characterized in that: The end face of the extrusion block (7) facing the bladder (5) is provided with a bevel (10).

3. The fireproof window according to claim 1, characterized in that: The drive spring (8) is arranged in an L-shape.

4. The fireproof window according to claim 1, characterized in that: The drive spring (8) is arranged vertically, and a cable (12) is connected between the drive spring (8) and the compression block (7).

5. The fireproof window according to claim 1, characterized in that: A drainage plate (13) is inclinedly provided at the bottom of the cavity of the fireproof glass (3).

6. The fireproof window according to claim 4, characterized in that: A guide wheel (14) is rotatably disposed inside the mounting cavity (4), and the cable (12) abuts against the outer periphery of the guide wheel (14).

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