A fireproof grille

Abstract

A fireproof grille, comprising a grille body, the grille body includes a grille outer frame and louvers, the louvers are installed inside the grille outer frame, a grille back plate is installed on the back of the grille outer frame, a number of first through holes are formed on the grille back plate, a fireproof board is installed between the louvers and the grille back plate inside the grille body, a number of second through holes are provided on the fireproof board, and a number of fireproof expansion strips that expand when encountering fire and block the second through holes are provided between the second through holes on the fireproof board; air can circulate through the louvers, the second through holes and the first through holes. Fireproof expansion strips are installed between every two adjacent second through holes in each column on the fireproof board. When a fire occurs, the fireproof expansion strips expand when heated and will cover the second through holes on the fireproof board, which can prevent flames and smoke from passing through the grille body, prevent the fire from spreading further, and can protect the life and health of people as well as property safety.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection devices, and particularly to a fireproof grille. Background Art

[0002] The air circulation effect can be enhanced through the grille air outlet, thereby improving the indoor air quality, reducing the building energy consumption, and controlling the local thermal and humid environment in large spaces; when a fire occurs, the flame and smoke can spread to other areas through the grille air outlet, which will cause the fire to become larger and cause greater damage to people's lives, health and property. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a fireproof grille with good fireproof effect, rapid response to fire and convenient use.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A fireproof grille, comprising a grille body, the grille body includes a grille outer frame and louvers, the louvers are installed inside the grille outer frame, a grille back plate is installed on the back of the grille outer frame, a plurality of first through holes are formed on the grille back plate, a fireproof board is installed between the louvers and the grille back plate inside the grille body, a plurality of second through holes are provided on the fireproof board, and a plurality of fireproof expansion strips that expand when encountering fire and block the second through holes are provided between the plurality of second through holes on the fireproof board.

[0006] In this embodiment, a first gasket is installed between the fireproof board and the grille outer frame, and a second gasket is also installed between the fireproof board and the grille back plate.

[0007] In this embodiment, a fireproof fixing plate is installed between the fireproof board and the grille back plate, a plurality of third through holes are formed on the fireproof fixing plate, a fireproof hanging mechanism is installed on the grille outer frame, the fireproof board is hung on the fireproof hanging mechanism, and the fireproof hanging mechanism releases the fireproof board to fall when encountering fire. After the fireproof board falls, the second through holes on it are misaligned and blocked with the third through holes on the fireproof fixing plate.

[0008] In this embodiment, L-shaped holes for installing the fireproof hanging mechanism are opened on both the fireproof fixing plate and the fireproof board, a through groove for the fireproof hanging mechanism to pass through is also opened on the louver, and notches for easily installing the first gasket are opened at the top corners of the fireproof board.

[0009] In this embodiment, the fireproof mounting mechanism includes a housing installed on the grille outer frame. One side of the housing is provided with a mounting hole, and a first rotating shaft that supports the fireproof board through an L-shaped hole is inserted through the mounting hole. A pop bead is arranged on one side of the first rotating shaft inside the housing, and a first spring is installed on the other side of the first rotating shaft.

[0010] In this embodiment, a first pin shaft is inserted through the part of the first rotating shaft inside the housing.

[0011] In this embodiment, a fifth through hole is further formed in the housing to facilitate the pop bead to sense external heat.

[0012] In this embodiment, the fireproof mounting mechanism further includes a fuse piece for sensing heat and a second spring. Pull rings are formed at both ends of the fuse piece. Two hooks are formed on the grille outer frame. The fuse piece is sleeved on one of the hooks through the pull ring. The fuse piece is connected to a first pull rod through the other pull ring. The first pull rod is inserted through a second rotating shaft. A second pull rod is also inserted through the second rotating shaft and is opposite to the extending direction of the first pull rod. The other hook is connected to the second pull rod through the second spring.

[0013] In this embodiment, the second rotating shaft is inserted with a second pin shaft between the fireproof fixing plate and the grille back plate and extends into the grille outer frame.

[0014] In this embodiment, a first nut is installed at the end of the first pull rod away from the fuse piece, and a second nut is installed at the end of the second pull rod away from the second spring.

[0015] In this embodiment, fireproof expansion strips are installed around the grille outer frame.

[0016] Compared with the prior art, the advantages of the present invention are as follows: Air can flow through the louvers, the second through holes, and the first through holes. Fireproof expansion strips are installed between every two adjacent second through holes in each column on the fireproof board. When a fire occurs, the fireproof expansion strips expand when heated and will cover the second through holes on the fireproof board, which can prevent flames and smoke from flowing through the grille body, prevent the fire from spreading further, and ensure the life health and property safety of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of Embodiment 1 of a fireproof grille of the present invention;

[0018] Figure 2 is the internal structural schematic diagram of Embodiment 1 of a fireproof grille of the present invention;

[0019] Figure 3 is the three-dimensional diagram of the first gasket and the second gasket of Embodiment 1 of a fireproof grille of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of Embodiment 2 of a fireproof grille according to the present invention;

[0021] Figure 5 It is a three-dimensional view of a fireproof fixing plate of Embodiment 2 of a fireproof grille according to the present invention;

[0022] Figure 6 It is a three-dimensional view of a fireproof board of Embodiment 2 of a fireproof grille according to the present invention;

[0023] Figure 7 It is a three-dimensional view of a fireproof mounting mechanism of Embodiment 2 of a fireproof grille according to the present invention;

[0024] Figure 8 It is a three-dimensional view of a fireproof mounting mechanism of Embodiment 3 of a fireproof grille according to the present invention;

[0025] Figure 9 It is a three-dimensional view of a grille outer frame of Embodiment 3 of a fireproof grille according to the present invention.

[0026] Each label in the figure represents:

[0027] 1. Grille body; 11. Grille outer frame; 111. Hook; 12. Louver; 13. Grille back plate; 14. First through hole; 15. First gasket; 16. Second gasket; 2. Fireproof board; 21. Second through hole; 22. Fireproof expansion strip; 23. Fireproof fixing plate; 24. Third through hole; 27. L-shaped hole; 28. Through groove; 29. Notch; 3. Fireproof mounting mechanism; 31. Housing; 311. Mounting hole; 312. Fifth through hole; 32. First rotating shaft; 321. First pin shaft; 33. Explosion bead; 34. First spring; 35. Fuse piece; 351. Pull ring; 352. First nut; 36. First pull rod; 37. Second rotating shaft; 371. Second pin shaft; 38. Second pull rod; 381. Second nut; 39. Second spring. Detailed implementation manners

[0028] The following will further describe the present invention in detail with reference to the specification drawings and specific embodiments.

[0029] Embodiment 1:

[0030] Figures 1 to 3The first embodiment of a fireproof grille according to the present invention is shown, which includes a grille body 1. The grille body 1 includes a grille outer frame 11 and louvers 12. The louvers 12 are installed inside the grille outer frame 11. A grille back plate 13 is installed on the back of the grille outer frame 11. A number of first through holes 14 are formed on the grille back plate 13. A fireproof board 2 is installed between the louvers 12 and the grille back plate 13 inside the grille body 1. A number of second through holes 21 are provided on the fireproof board 2. A number of fireproof expansion strips 22 that expand when encountering fire and block the second through holes 21 are provided between the second through holes 21 on the fireproof board 2. Air can circulate through the louvers 12, the second through holes 21, and the first through holes 14. Fireproof expansion strips 22 are installed between every two adjacent second through holes 21 in each column on the fireproof board 2. When a fire occurs, the fireproof expansion strips 22 expand when heated and will cover the second through holes 21 on the fireproof board 2, preventing the flame and smoke from flowing through the grille body 1 and preventing the fire from spreading further, which can protect the life and health of people and the safety of property.

[0031] In this embodiment, a first gasket 15 is installed between the fireproof board 2 and the grille outer frame 11, and a second gasket 16 is also installed between the fireproof board 2 and the grille back plate 13. The first gasket 15 can prevent the fireproof board 2 from shaking inside the grille body 1, causing the fireproof expansion strips 22 to fall off and affecting the fireproof effect. The second gasket 16 can prevent the fireproof board 2 from closely adhering to the grille back plate 13, preventing the fireproof board 2 from fitting together with the grille back plate 13 and reducing the area of air entering the grille body 1 from the grille back plate 13, resulting in a decrease in ventilation efficiency and affecting the ventilation effect.

[0032] In this embodiment, fireproof expansion strips 22 are installed around the grille outer frame 11. The fireproof expansion strips 22 are arranged between the grille outer frame 11 and the wall. When a fire occurs, the fireproof expansion strips 22 expand when encountering fire and then fill the gap between the grille outer frame 11 and the wall, preventing the flame and smoke from spreading from the gap between the grille outer frame 11 and the wall.

[0033] Embodiment 2:

[0034] Figures 4 to 7The second embodiment of a fireproof grille according to the present invention is shown. This embodiment is basically the same as Embodiment 1, except that: in this embodiment, a fireproof fixing plate 23 is installed between the fireproof board 2 and the grille back plate 13. A number of third through holes 24 are formed on the fireproof fixing plate 23. A fireproof hanging mechanism 3 is installed on the grille outer frame 11. The fireproof board 2 is hung on the fireproof hanging mechanism 3. When the fireproof hanging mechanism 3 encounters fire, it releases the fireproof board 2 to fall. After the fireproof board 2 falls, the second through holes 21 thereon are misaligned and blocked with the third through holes 24 on the fireproof fixing plate 23. When a fire occurs, the fireproof expansion strips 22 on the fireproof board 2 expand when heated, covering the second through holes 21 to prevent the flame and smoke from spreading to other areas through the second through holes 21. The fireproof hanging mechanism 3 starts to act when heated, releasing the fixation of the fireproof board 2. The fireproof board 2 slides and falls on the surface of the fireproof fixing plate 23, causing the third through holes 24 to be misaligned with the second through holes 21, so that both the third through holes 24 and the second through holes 21 are covered, further improving the fireproof effect, further preventing the flame and smoke from spreading, and ensuring the life, health and property safety of people.

[0035] In this embodiment, L-shaped holes 27 for installing the fireproof hanging mechanism 3 are provided on both the fireproof fixing plate 23 and the fireproof board 2. A through groove 28 for the fireproof hanging mechanism 3 to pass through is also provided on the louver 12. Notches 29 for facilitating the installation of the first gasket 15 are provided at the top corners of the fireproof board 2. The fireproof hanging mechanism 3 supports the fireproof board 2 through the L-shaped holes 27. When a fire occurs, the fireproof hanging mechanism 3 shifts in the L-shaped holes 27 and no longer supports the fireproof board 2. The fireproof board 2 slides on the surface of the fireproof fixing plate 23. Providing the through groove 28 on the louver 12 for installing the fireproof hanging mechanism 3 does not affect the operation of the fireproof hanging mechanism 3 when a fire occurs.

[0036] In this embodiment, the fireproof mounting mechanism 3 includes a housing 31 installed on the grille outer frame 11. An installation hole 311 is formed on one side of the housing 31. A first rotating shaft 32 that supports the fireproof board 2 through the L-shaped hole 27 is inserted into the installation hole 311. A bursting bead 33 is arranged inside the housing 31 on one side of the first rotating shaft 32, and a first spring 34 is installed on the other side of the first rotating shaft 32. The part of the first rotating shaft 32 outside the housing 31 is inserted into the L-shaped hole 27. The L-shaped hole 27 is composed of two mutually perpendicular strip-shaped holes. The first rotating shaft 32 is located in the strip-shaped hole parallel to the horizontal plane at the bottom of the L-shaped hole 27 and supports the fireproof board 2, so that the second through holes 21 correspond to the third through holes 24 on the fireproof fixing plate 23 one by one. When a fire occurs, the bursting bead 33 is heated and ruptured, and the first spring 34 pushes the first rotating shaft 32 to rotate clockwise in the installation hole 311, so that the first rotating shaft 32 rotates into the strip-shaped hole perpendicular to the bottom strip-shaped hole in the L-shaped hole 27, and the first rotating shaft 32 no longer supports the fireproof board 2, causing the fireproof board 2 to fall. Furthermore, the second through holes 21 on the fireproof board 2 are displaced from the third through holes 24, preventing flames and smoke from spreading through the second through holes 21 and the third through holes 24.

[0037] In this embodiment, a first pin shaft 321 is inserted through the part of the first rotating shaft 32 inside the housing 31 and extends into the grille outer frame 11. The first rotating shaft 32 rotates around the first pin shaft 321 as the rotation center, improving the stability of the first pin shaft 321 during rotation and preventing the first pin shaft 321 from rotating to other positions, resulting in the inability of the fireproof board 2 to fall and affecting the fireproof effect.

[0038] In this embodiment, a fifth through hole 312 for facilitating the bursting bead 33 to sense external heat is also formed on the housing 31. Through the fifth through hole 312, heat transfer to the housing 31 can be prevented, so that the bursting bead 33 cannot quickly sense the heat and burst.

[0039] Embodiment 3:

[0040] Figures 8 to 9The third embodiment of a fireproof grille according to the present invention is shown. This embodiment is basically the same as Embodiment 1, and the only difference is that: in this embodiment, the fireproof mounting mechanism 3 further includes a fuse piece 35 for sensing heat and a second spring 39. Pull rings 351 are formed at both ends of the fuse piece 35. Two hooks 111 are formed on the grille outer frame 11. The fuse piece 35 is sleeved on one of the hooks 111 through the pull ring 351. The fuse piece 35 is connected to the first pull rod 36 through the other pull ring 351. The first pull rod 36 is inserted into the second rotating shaft 37. A second pull rod 38 is also inserted into the second rotating shaft 37 and is in the opposite direction to the extending direction of the first pull rod 36. The other hook 111 is connected to the second pull rod 38 through the second spring 39. The fuse piece 35 provides a horizontally leftward pulling force to the second rotating shaft 37 through the first pull rod 36. The second spring 39 provides a horizontally rightward pulling force to the second rotating shaft 37 through the second pull rod 38, so that the second rotating shaft 37 is in a force balance state. The second rotating shaft 37 is inserted into the strip-shaped hole at the bottom of the L-shaped hole 27 to support the fireproof board 2. When a fire occurs, the fireproof expansion strip 22 on the fireproof board 2 expands due to heat, covering the second through hole 21, preventing flames and smoke from spreading to other places through the second through hole 21 and the third through hole 24. The fuse piece 35 breaks due to heat, and the horizontally leftward pulling force disappears. The second spring 39 contracts, driving the second rotating shaft 37 to rotate counterclockwise, so that the second rotating shaft 37 rotates into the strip-shaped hole perpendicular to the bottom strip-shaped hole in the L-shaped hole 27, and the fireproof board 2 loses support and falls, causing the third through hole 24 and the second through hole 21 to be misaligned, which can further improve the fireproof effect and further protect the life, health and property safety of people.

[0041] In this embodiment, a second pin shaft 371 is inserted between the fireproof fixing plate 23 and the grille back plate 13 of the second rotating shaft 37 and extends into the grille outer frame 11. The second rotating shaft 37 rotates with the second pin shaft 371 as the rotation center during rotation, which can improve the stability of the second rotating shaft 37 during rotation and prevent the second rotating shaft 37 from being misaligned during rotation, so that the fireproof board 2 cannot fall normally.

[0042] In this embodiment, a first nut 352 is installed at the end of the first pull rod 36 away from the fuse piece 35, and a second nut 381 is installed at the end of the second pull rod 38 away from the second spring 39. The pulling force exerted on the second rotating shaft 37 by the first pull rod 36 and the second pull rod 38 can be adjusted through the first nut 352 and the second nut 381, so that the second rotating shaft 37 is in a force balance state.

[0043] Although the present invention has been disclosed above in its preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A fireproof grille, comprising a grille body (1), the grille body (1) including a grille outer frame (11) and louvers (12), the louvers (12) being installed within the grille outer frame (11), characterized in that: A grille back plate (13) is installed on the back of the grille outer frame (11). A number of first through holes (14) are formed on the grille back plate (13). A fireproof board (2) is installed between the louvers (12) and the grille back plate (13) inside the grille body (1). A number of second through holes (21) are provided on the fireproof board (2). A number of fireproof expansion strips (22) that expand when encountering fire and block the second through holes (21) are provided between the second through holes (21) on the fireproof board (2). A first gasket (15) is installed between the fireproof board (2) and the grille outer frame (11). A second gasket (16) is also installed between the fireproof board (2) and the grille back plate (13). A fireproof fixing plate (23) is installed between the fireproof board (2) and the grille back plate (13). A number of third through holes (24) are formed on the fireproof fixing plate (23). A fireproof hanging mechanism (3) is installed on the grille outer frame (11). The fireproof board (2) is hung on the fireproof hanging mechanism (3). When encountering fire, the fireproof hanging mechanism (3) releases the fireproof board (2) to fall. After the fireproof board (2) falls, the second through holes (21) on it are misaligned and blocked with the third through holes (24) on the fireproof fixing plate (23). L-shaped holes (27) for installing the fireproof hanging mechanism (3) are formed on both the fireproof fixing plate (23) and the fireproof board (2). A through groove (28) facilitating the passage of the fireproof hanging mechanism (3) is also formed on the louver (12). Notches (29) facilitating the installation of the first gasket (15) are formed at the top corners of the fireproof board (2). The fireproof hanging mechanism (3) includes a housing (31) installed on the grille outer frame (11). An installation hole (311) is formed on one side of the housing (31). A first rotating shaft (32) that supports the fireproof board (2) through the L-shaped hole (27) is inserted into the installation hole (311). A bursting bead (33) is arranged on one side of the first rotating shaft (32) inside the housing (31). A first spring (34) is installed on the other side of the first rotating shaft (32).

2. The fireproof grille according to claim 1, characterized in that: A first pin shaft (321) is inserted through the part of the first rotating shaft (32) that is inserted into the housing (31).

3. A fireproof grille according to claim 2, characterized in that: A fifth through hole (312) facilitating the bursting bead (33) to sense external heat is also formed on the housing (31).

4. A fireproof grille according to any one of claims 1 to 3, characterized in that: Fireproof expansion strips (22) are installed around the grille outer frame (11).

5. A fireproof grille, comprising a grille body (1), wherein the grille body (1) includes a grille outer frame (11) and louvers (12), and the louvers (12) are installed inside the grille outer frame (11), characterized in that: A grille backplate (13) is installed on the back of the grille outer frame (11). A number of first through holes (14) are formed on the grille backplate (13). A fireproof board (2) is installed between the louvers (12) and the grille backplate (13) inside the grille body (1). A number of second through holes (21) are provided on the fireproof board (2). A number of fireproof expansion strips (22) that expand when encountering fire and block the second through holes (21) are provided between the second through holes (21) on the fireproof board (2). A first gasket (15) is installed between the fireproof board (2) and the grille outer frame (11). A second gasket (16) is also installed between the fireproof board (2) and the grille backplate (13). A fireproof fixing plate (23) is installed between the fireproof board (2) and the grille backplate (13). A number of third through holes (24) are formed on the fireproof fixing plate (23). A fireproof hanging mechanism (3) is installed on the grille outer frame (11). The fireproof board (2) is hung on the fireproof hanging mechanism (3). When encountering fire, the fireproof hanging mechanism (3) releases the fireproof board (2) to fall. After the fireproof board (2) falls, the second through holes (21) on it are misaligned and blocked with the third through holes (24) on the fireproof fixing plate (23). L-shaped holes (27) for installing the fireproof hanging mechanism (3) are formed on both the fireproof fixing plate (23) and the fireproof board (2). A through slot (28) facilitating the passage of the fireproof hanging mechanism (3) is also formed on the louver (12). Notches (29) facilitating the installation of the first gasket (15) are formed at the top corners of the fireproof board (2). The fireproof hanging mechanism (3) further includes a fuse piece (35) for sensing heat and a second spring (39). Pulling rings (351) are formed at both ends of the fuse piece (35). Two hooks (111) are formed on the grille outer frame (11). The fuse piece (35) is sleeved on one of the hooks (111) through the pulling ring (351). The fuse piece (35) is connected to a first pull rod (36) through the other pulling ring (351). The first pull rod (36) passes through a second rotating shaft (37). A second pull rod (38) also passes through the second rotating shaft (37) and is opposite to the extending direction of the first pull rod (36). The other hook (111) is connected to the second pull rod (38) through the second spring (39).

6. A fireproof grille according to claim 5, characterized in that: A second pin shaft (371) passes through the second rotating shaft (37) between the fireproof fixing plate (23) and the grille backplate (13) and extends into the grille outer frame (11).

7. A fireproof grille according to claim 6, characterized in that: A first nut (352) is installed at the end of the first pull rod (36) away from the fuse piece (35). A second nut (381) is installed at the end of the second pull rod (38) away from the second spring (39).

8. A fireproof grille according to any one of claims 5 to 7, characterized in that: Fireproof expansion strips (22) are installed around the grille outer frame (11).

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