Fireproof heat-insulating grid

Abstract

The utility model relates to the field of fire prevention grating, especially a fire prevention and heat insulation grating, which comprises a shell, a ventilation panel, a first grating frame, a second grating frame, a plurality of grating strips and a plurality of connecting pieces. The first grating frame, the ventilation panel and the shell jointly enclose a first heat insulation space. The second grating frame, the first grating frame and the shell jointly enclose a second heat insulation space. The first grating frame is connected and fixed with the second grating frame through the connecting pieces. All the grating strips are horizontally arranged between the first grating frame and the second grating frame. Ventilation gaps are formed between the upper and lower adjacent grating strips. Each grating strip comprises a heat-expandable material layer, which is used to expand and close the ventilation gaps when heated. The two air layers of the first heat insulation space and the second heat insulation space form a double heat insulation barrier, which insulates the heat transfer and reduces the heat diffusion. The heat-expandable material layer expands when heated, cutting off the heat transfer channel and enhancing the fire prevention and heat insulation effect.

Description

Technical Field

[0001] This utility model relates to the field of fireproof grilles, and in particular to a fireproof and heat-insulating grille. Background Technology

[0002] Ventilation systems are crucial for air circulation and equipment cooling. However, traditional vents or louvers can become channels for the spread of flames and hot smoke during a fire, accelerating the fire's spread and threatening life and property.

[0003] Existing fire dampers, fireproof roller shutters and other facilities are complex in structure and expensive. They are mostly electrically controlled or controlled by fusible metal temperature sensors, which means they rely on external power sources and have high maintenance costs. When dealing with prolonged high temperatures, the high temperature may be quickly transferred to the unexposed side through heat conduction and heat radiation, igniting combustibles or damaging equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0005] The solution to the technical problem of this utility model is: a fireproof and heat-insulating grille, comprising a shell, a ventilation panel, a first grille frame, a second grille frame, multiple grille strips, and multiple connectors. The shell has an installation space, the ventilation panel is disposed on one side of the shell, and the ventilation panel has a ventilation opening communicating with the installation space. The first grille frame is disposed in the installation space and parallel to the ventilation panel. The first grille frame, the ventilation panel, and the shell together enclose a first heat-insulating space. The second grille frame is disposed on the side of the shell away from the ventilation panel, and the second grille frame is parallel to the first grille frame. The second grille frame, the first grille frame, and... The outer shells together form a second heat-insulating space. The first grille frame is connected and fixed to the second grille frame through the connector. All the grille strips are horizontally arranged between the first and second grille frames. The two ends of the grille strips are detachably installed on the first and second grille frames. All the grille strips are evenly arranged in the vertical direction. A ventilation gap is formed between two adjacent grille strips. Each grille strip includes a heat-expanding material layer. The heat-expanding material layer is used to expand when the ambient temperature reaches the trigger temperature, so that the size of the grille strip in the vertical direction increases, thereby causing the adjacent grille strips to move closer to each other and fit tightly to seal the ventilation gap.

[0006] As a further improvement to the above technical solution, the ventilation panel includes a panel body and a plurality of ventilation components. The panel body is disposed on one side of the housing, and all the ventilation components are evenly arranged vertically on the side of the panel body near the installation space, with the ventilation openings formed between adjacent ventilation components.

[0007] As a further improvement to the above technical solution, the panel body is provided with a plurality of mounting holes, all of which are evenly distributed circumferentially along the edge of the panel body. The outer shell is provided with threaded holes that mate with the mounting holes, and the panel body is detachably connected to the outer shell by screws.

[0008] As a further improvement to the above technical solution, the ventilation component includes a mounting plate, a bending plate, and a baffle. The mounting plate is fixed on the panel body. One end of the bending plate is connected to the bottom end of the mounting plate, and the other end of the bending plate extends downward at an angle away from the panel body. One end of the baffle is connected to the bottom end of the bending plate, and the other end of the baffle extends vertically downward. The baffle is arranged parallel to the panel body.

[0009] As a further improvement to the above technical solution, the plurality of ventilation components are divided into at least two groups, and the ventilation panel further includes at least one support beam, which is vertically arranged on the ventilation panel, and the two ends of all the ventilation components are respectively fixed to the panel body and the support beam.

[0010] As a further improvement to the above technical solution, the first grid frame is provided with a plurality of first mounting slots on the side facing the grid strip, and all the first mounting slots are evenly arranged in the vertical direction. The second grid frame is provided with a plurality of second mounting slots on the side facing the grid strip, and all the second mounting slots are evenly arranged in the vertical direction. The first mounting slots and the second mounting slots are arranged in a one-to-one correspondence. The two ends of the grid strip are respectively engaged in the corresponding first mounting slots and second mounting slots.

[0011] As a further improvement to the above technical solution, each of the grid strips further includes two snap-fit ​​members, which are arranged opposite to each other. The heat-expanding material layer is sandwiched between the two snap-fit ​​members, and a guide portion is provided at one end of the two snap-fit ​​members that is far apart from each other. The guide portion is used to insert into the corresponding first mounting groove or second mounting groove.

[0012] As a further improvement to the above technical solution, the connector includes a bolt and a nut. Both the first grid frame and the second grid frame are provided with through holes for installing the bolt. The bolt passes through the through holes and cooperates with the nut to fasten the first grid frame and the second grid frame.

[0013] The beneficial effects of this utility model are as follows: the outer shell provides basic support and protection; the ventilation panel constitutes the fire-facing surface of the grille, and the ventilation openings on it ensure daily ventilation needs; the first and second grille frames are jointly fixed to the grille strips by the connection and fixation of the connecting frame, ensuring that the entire grille can maintain its proper structural state during normal use and high-temperature response; the first and second heat-insulating spaces, which are air layers formed by the outer shell and the first and second grille frames, can effectively attenuate and delay heat conduction; under normal circumstances, the grille strips ensure the existence of ventilation gaps to achieve ventilation function; when heated to the trigger temperature, the heat-expanding material layer of the grille strips plays a role, causing its own size to change, closing the ventilation gaps, and achieving fireproof and heat-insulating functions. By setting the first and second heat-insulating spaces, two air layers are formed, forming a double heat-insulating barrier, which can effectively isolate heat transfer and reduce the diffusion of heat to the other side through the grille during a fire; when the ambient temperature reaches the trigger temperature, the heat-expanding material layer in the grille strips increases in size, and adjacent grille strips move closer together, closing the ventilation gaps, preventing air circulation, cutting off the heat transfer channel, and enhancing the fireproof and heat-insulating effect. Attached Figure Description

[0014] Figure 1 This is an exploded view of one embodiment of this utility model.

[0015] Figure 2 This is a cross-sectional view of one embodiment of the present invention.

[0016] Reference numerals in the attached drawings: 100-outer shell, 101-threaded hole, 200-ventilation panel, 210-panel body, 211-mounting hole, 220-ventilation component, 221-mounting plate, 222-bent plate, 223-baffle, 230-support beam, 300-first grille frame, 310-first mounting groove, 320-first thermal insulation space, 400-second grille frame, 410-second mounting groove, 420-second thermal insulation space, 500-grille strip, 510-heat-expanding material layer, 520-clamping component, 521-guide part, 600-connector, 610-bolt, 620-nut. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Ventilation systems are crucial for air circulation and equipment cooling. However, traditional vents or louvers can become channels for the spread of flames and hot smoke during a fire, accelerating the fire's spread and threatening life and property.

[0020] Existing fire dampers, fireproof roller shutters and other facilities are complex in structure and expensive. They are mostly electrically controlled or controlled by fusible metal temperature sensors, which means they rely on external power sources and have high maintenance costs. When dealing with prolonged high temperatures, the high temperature may be quickly transferred to the unexposed side through heat conduction and heat radiation, igniting combustibles or damaging equipment.

[0021] Therefore, this utility model proposes a fireproof and heat-insulating grille, referring to... Figure 1 and Figure 2It includes a housing 100, a ventilation panel 200, a first grille frame 300, a second grille frame 400, multiple grille strips 500, and multiple connectors 600. The housing 100 has an installation space. The ventilation panel 200 is disposed on one side of the housing 100 and has a ventilation opening communicating with the installation space. The first grille frame 300 is disposed in the installation space and parallel to the ventilation panel 200. The first grille frame 300, the ventilation panel 200, and the housing 100 together enclose a first heat-insulating space 320. The second grille frame 400 is disposed on the side of the housing 100 away from the ventilation panel 200 and is parallel to the first grille frame 300. The second grille frame 400, the first grille frame 300, and the housing 100 together enclose a first heat-insulating space 320. The first grid frame 300 is connected and fixed to the second grid frame 400 through the connector 600. All the grid strips 500 are horizontally arranged between the first grid frame 300 and the second grid frame 400. The two ends of the grid strips 500 are detachably installed on the first grid frame 300 and the second grid frame 400. All the grid strips 500 are evenly arranged in the vertical direction. A ventilation gap is formed between two adjacent grid strips 500. Each grid strip 500 includes a heat-expanding material layer 510. The heat-expanding material layer 510 is used to expand when the ambient temperature reaches the trigger temperature, so that the size of the grid strip 500 in the vertical direction increases, so that the adjacent grid strips 500 move closer to each other and fit tightly to close the ventilation gap.

[0022] The outer shell 100 provides basic support and protection; the ventilation panel 200 forms the fire-facing surface of the grille, and the ventilation openings on it ensure daily ventilation needs; the first grille frame 300 and the second grille frame 400 are connected and fixed together by the connecting frame to fix the grille strip 500, ensuring that the entire grille can maintain the proper structural state during normal use and high-temperature response; the first heat insulation space 320 and the second heat insulation space 420, which are air layers formed by the outer shell 100 and the first grille frame 300 and the second grille frame 400, can effectively attenuate and delay heat conduction; the grille strip 500 ensures the existence of ventilation gaps under normal conditions to achieve ventilation function, and when it is heated to the trigger temperature, its heat-expanding material layer 510 plays a role, causing its own size to change, sealing the ventilation gaps, and achieving fireproof and heat insulation function. By setting up two air layers, the first heat insulation space 320 and the second heat insulation space 420, a double heat insulation barrier is formed, which can effectively isolate the transfer of heat and reduce the spread of heat to the other side through the grille when a fire occurs. When the ambient temperature reaches the trigger temperature, the thermal expansion material layer 510 in the grille bar 500 increases in size, and the adjacent grille bars 500 come together and fit together, sealing the ventilation gap, preventing air circulation, cutting off the heat transfer channel, and enhancing the fireproof and heat insulation effect.

[0023] During installation, the outer shell 100 of the grille is embedded or fixed into an opening in the building wall. The ventilation panel 200 faces the hazardous area where a fire may occur, and the second grille frame 400 faces the safe area that needs protection. The heat-expanding material can be a high-performance fire-retardant expanding coating, graphite-based expanding material, etc., integrated into the interior or surface of the grille strip 500 in the form of a coating, core material, or wrapping layer. During normal daily use, the ventilation openings of the ventilation panel 200 ensure normal airflow, the heat-expanding material layer 510 within the grille strips 500 remains stable, and all horizontally arranged grille strips 500 maintain uniform ventilation gaps. External air can smoothly pass through the ventilation openings of the ventilation panel 200, through the ventilation gaps between the grille strips 500, and enter the building interior, achieving the ventilation function. In the event of a fire, the ambient temperature rises to the trigger temperature of the heat-expanding material layer 510, causing the heat-expanding material layer 510 to expand. The vertical dimension of each grille strip 500 increases significantly, causing adjacent grille strips 500 to press against each other and move closer together. Ultimately, all ventilation gaps are completely sealed, forming a dense heat insulation barrier that blocks airflow and flame penetration. At the same time, the first and second heat insulation spaces 420 interrupt the continuous heat conduction path of the solid material between the ventilation panel 200, the first grille frame 300, and the second grille frame 400, playing a role in attenuating and delaying heat conduction, and jointly achieving the fireproof and heat insulation function.

[0024] A haphazard distribution of ventilation openings can lead to disordered airflow, causing turbulence and stagnation as air passes through, preventing the formation of a smooth and orderly ventilation path. Therefore, in one embodiment, the ventilation panel 200 includes a panel body 210 and multiple ventilation components 220. The panel body 210 is disposed on one side of the outer casing 100, and all the ventilation components 220 are evenly arranged vertically on the side of the panel body 210 closest to the installation space, with ventilation openings formed between adjacent ventilation components. This vertical arrangement of the ventilation components 220 on the panel body 210, with ventilation openings between adjacent components, helps to form an orderly airflow channel, more effectively guiding air circulation, improving ventilation efficiency, and ensuring a good air environment within the building.

[0025] In one embodiment, the panel body 210 is provided with a plurality of mounting holes 211, all of which are evenly distributed circumferentially along the edge of the panel body 210. The outer shell 100 is provided with threaded holes 101 that mate with the mounting holes 211. The panel body 210 is detachably connected to the outer shell 100 by screws. The plurality of mounting holes 211 are evenly distributed circumferentially along the edge of the panel body 210 and mate with the threaded holes 101 of the outer shell 100, connected by screws. This prevents loosening or displacement due to vibration, airflow impact, or other factors during daily use, ensuring the stability of the entire fireproof and heat-insulating grille structure. In subsequent use, if the ventilation panel 200 is damaged and needs replacement, or requires regular inspection or maintenance, it can be easily disassembled simply by unscrewing the screws, making the operation simple and convenient, reducing maintenance costs and difficulty.

[0026] Dust and other particulate matter in the outside air may enter the grille through the vents, potentially damaging indoor electrical equipment and precision instruments. Therefore, in one embodiment, the ventilation component 220 includes a mounting plate 221, a bent plate 222, and a baffle 223. The mounting plate 221 is fixed to the panel body 210. One end of the bent plate 222 is connected to the bottom end of the mounting plate 221, and the other end of the bent plate 222 extends downwards at an angle away from the panel body 210. One end of the baffle 223 is connected to the bottom end of the bent plate 222, and the other end of the baffle 223 extends vertically downwards. The baffle 223 is arranged parallel to the panel body 210. The ventilation component 220 forms an air guiding channel through the mounting plate 221, bending plate 222, and baffle 223, which can guide the incoming air in an orderly manner, allowing the air to flow along the designed path and ensuring ventilation effect. When it rains, rainwater slides down the surface of the bending plate 222 and baffle 223, making it difficult for rainwater to directly enter the ventilation opening, effectively blocking rainwater from entering the grille. Due to the obstruction of the bending plate 222 and baffle 223, dust and other particles in the outside air are not easy to directly enter the grille through the ventilation opening when they are carried by the wind, reducing the amount of dust entering.

[0027] Long ventilation components 220 may sag and deform under long-term exposure to their own weight and external forces such as wind pressure, affecting ventilation efficiency. Therefore, in one embodiment, multiple ventilation components 220 are divided into at least two groups. The ventilation panel 200 also includes at least one support beam 230, which is vertically mounted on the ventilation panel 200. Both ends of all ventilation components 220 are fixed to the panel body 210 and the support beam 230, respectively. The support beam 230 adds an extra support point to the ventilation components 220. For long grilles, this can distribute the external forces such as gravity and wind pressure they bear, making the stress on the entire grille assembly more uniform and significantly improving structural rigidity. Through the intermediate support provided by the support beam 230, the vertical stability of the ventilation components 220 is enhanced, effectively preventing natural sagging caused by long-term gravity and deformation under wind pressure during strong winds.

[0028] Under the influence of external forces such as airflow impact during normal ventilation and the force generated by material expansion during a fire, the grille strip 500 may loosen, shift, or even fall off. Therefore, in one embodiment, the first grille frame 300 has a plurality of first mounting grooves 310 on the side facing the grille strip 500, and all the first mounting grooves 310 are evenly arranged in the vertical direction. The second grille frame 400 has a plurality of second mounting grooves 410 on the side facing the grille strip 500, and all the second mounting grooves 410 are evenly arranged in the vertical direction. The first mounting grooves 310 and the second mounting grooves 410 are arranged one-to-one, and the two ends of the grille strip 500 are respectively engaged in the corresponding first mounting groove 310 and second mounting groove 410. By corresponding the first mounting slot 310 and the second mounting slot 410, the two ends of the grid strip 500 are respectively locked in them, forming a stable slot-type connection. This effectively fixes the position of the grid strip 500 and ensures the stability of the entire grid structure. The slot-type installation only requires the two ends of the grid strip 500 to be locked into the mounting slots, which is simple and convenient to operate and can effectively improve production assembly efficiency. In subsequent use, if the grid strip 500 is damaged and needs to be replaced, no complicated tools or a lot of disassembly work are required, which reduces maintenance difficulty and cost.

[0029] The thermally expandable material layer is directly exposed and is easily damaged by collisions and friction during daily handling, installation, disassembly, and use. Therefore, in one embodiment, each of the grid strips 500 further includes two snap-fit ​​members 520, which are arranged opposite to each other. The thermally expandable material layer 510 is sandwiched between the two snap-fit ​​members 520. The ends of the two snap-fit ​​members 520 that are far apart from each other are provided with guide portions 521, which are used to insert into the corresponding first mounting groove 310 or second mounting groove 410. By setting opposing snap-fit ​​pieces 520 at both ends of the grid strip 500 and sandwiching the heat-expanding material layer 510 between them, the structure of the grid strip 500 is made more stable. The snap-fit ​​pieces 520 cooperate with the corresponding first mounting groove 310 or second mounting groove 410 to effectively resist various external forces and prevent the grid strip 500 from loosening or shifting. The guide part 521 set on the snap-fit ​​piece 520 has a shape and size that matches the first mounting groove 310 or second mounting groove 410. When installing the grid strip 500, the guide part 521 can play a guiding role, making it convenient for operators to accurately and smoothly insert the grid strip 500 into the corresponding mounting groove, reducing the installation difficulty and improving the installation efficiency. The snap-fit ​​pieces 520 provide physical protection for the heat-expanding material layer 510, avoiding damage to the heat-expanding material layer 510 from external collisions, friction, etc. during daily use, installation, or disassembly.

[0030] During daily use, the first and second grille frames 400 may loosen or shift due to external forces, resulting in the grille strips 500 not being securely fixed and affecting the ventilation function. Therefore, in one embodiment, the connector 600 includes a bolt 610 and a nut 620. Both the first grille frame 300 and the second grille frame 400 have through holes for installing the bolts 610. The bolts 610 pass through the through holes and cooperate with the nuts 620 to fasten the first grille frame 300 and the second grille frame 400. By using bolts 610 to pass through the through holes in the first and second grid frames 400 and then tightening them with nuts 620, the first grid frame 300 and the second grid frame 400 can be connected together, and the middle grid strip 500 can be clamped. This effectively prevents the grid frames from loosening or shifting, maintains the stability of the entire double-layer frame structure, and ensures that ventilation and fire insulation functions can be continuously and normally realized. By adjusting the tightness of the bolts 610, the distance between the first grid frame 300 and the second grid frame 400 can be precisely controlled to keep it uniform and ensure that the two grid frames are in a parallel state, which helps to optimize the ventilation function. The fastening of the connectors 600 strengthens the double-layer frame structure composed of the first and second grid frames 400, giving it better resistance, maintaining the structural shape, and preventing deformation and collapse due to high temperature. This ensures that the fire insulation function is not damaged, effectively blocks the spread of flames and heat, and protects the safety of the building interior.

[0031] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A fireproof and heat-insulating grille, characterized in that, The device includes an outer shell, a ventilation panel, a first grille frame, a second grille frame, multiple grille strips, and multiple connectors. The outer shell contains an installation space. The ventilation panel is located on one side of the outer shell and has ventilation openings communicating with the installation space. The first grille frame is located within the installation space and is parallel to the ventilation panel. The first grille frame, the ventilation panel, and the outer shell together enclose a first heat-insulating space. The second grille frame is located on the side of the outer shell away from the ventilation panel and is parallel to the first grille frame. The second grille frame, the first grille frame, and the outer shell together enclose a second heat-insulating space. In the space, the first grid frame is connected and fixed to the second grid frame through the connector. All the grid strips are horizontally arranged between the first grid frame and the second grid frame. The two ends of the grid strips are detachably installed on the first grid frame and the second grid frame. All the grid strips are evenly arranged in the vertical direction. A ventilation gap is formed between two adjacent grid strips. Each grid strip includes a heat-expanding material layer. The heat-expanding material layer is used to expand when the ambient temperature reaches the trigger temperature, so that the size of the grid strip in the vertical direction increases, thereby making the adjacent grid strips close together and fit tightly to seal the ventilation gap.

2. The fireproof and heat-insulating grille according to claim 1, characterized in that, The ventilation panel includes a panel body and multiple ventilation components. The panel body is disposed on one side of the housing. All the ventilation components are evenly arranged vertically on the side of the panel body near the installation space, and the ventilation openings are formed between adjacent ventilation components.

3. A fireproof and heat-insulating grille according to claim 2, characterized in that, The panel body has multiple mounting holes, all of which are evenly distributed circumferentially along the edge of the panel body. The outer shell has threaded holes that mate with the mounting holes. The panel body is detachably connected to the outer shell by screws.

4. A fireproof and heat-insulating grille according to claim 2, characterized in that, The ventilation component includes a mounting plate, a bending plate, and a baffle. The mounting plate is fixed to the panel body. One end of the bending plate is connected to the bottom end of the mounting plate, and the other end of the bending plate extends downward at an angle away from the panel body. One end of the baffle is connected to the bottom end of the bending plate, and the other end of the baffle extends vertically downward. The baffle is arranged parallel to the panel body.

5. A fireproof and heat-insulating grille according to claim 2, characterized in that, The ventilation components are divided into at least two groups, and the ventilation panel also includes at least one support beam, which is vertically arranged on the ventilation panel. The two ends of all the ventilation components are respectively fixed to the panel body and the support beam.

6. A fireproof and heat-insulating grille according to claim 1, characterized in that, The first grid frame has a plurality of first mounting slots on the side facing the grid strip, and all the first mounting slots are evenly arranged in the vertical direction. The second grid frame has a plurality of second mounting slots on the side facing the grid strip, and all the second mounting slots are evenly arranged in the vertical direction. The first mounting slots and the second mounting slots are arranged in a one-to-one correspondence. The two ends of the grid strip are respectively engaged in the corresponding first mounting slots and second mounting slots.

7. A fireproof and heat-insulating grille according to claim 6, characterized in that, Each of the grid strips also includes two snap-fit ​​members, which are arranged opposite to each other. The heat-expanding material layer is sandwiched between the two snap-fit ​​members. The ends of the two snap-fit ​​members that are far apart from each other are provided with guide portions, which are used to insert into the corresponding first mounting groove or second mounting groove.

8. A fireproof and heat-insulating grille according to claim 1, characterized in that, The connector includes a bolt and a nut. Both the first grid frame and the second grid frame have through holes for installing the bolts. The bolts pass through the through holes and cooperate with the nuts to fasten the first grid frame and the second grid frame.

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