CN111877949A

CN111877949A - Fire-proof window

Info

Publication number: CN111877949A
Application number: CN202010763949.2A
Authority: CN
Inventors: 冯林英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-02
Filing date: 2020-08-02
Publication date: 2020-11-03

Abstract

The invention provides a fireproof window, which comprises a window frame, window sashes, pulleys, pull ropes, worm gears, worms, first connecting plates, transverse plates, connecting rods, a shell, limit stops, bimetallic strips, second connecting plates, baffle plates, first elastic films and spine parts, wherein the worm gears are rotatably connected on the window frame, the worms are rotatably connected between the two first connecting plates, the baffle is internally provided with a first round notch, the edge of the first elastic film is hermetically connected with the first round notch, the edge of the baffle is hermetically connected with the side wall of the inner cavity of the shell, the inner cavity of the shell is divided into an upper cavity and a lower cavity, the upper cavity is filled with liquid, one end of the second connecting plate is fixedly connected with the bottom surface of the lower cavity, the spine part is fixedly connected with the bimetallic strip, the spine part is positioned under the first elastic film, and when the bimetallic strip is bent, the spine part can pierce the first elastic film. The invention can automatically close the door and window when a fire disaster happens, prevents the fire from spreading, and has simple integral structure and lower cost.

Description

Fire-proof window

Technical Field

The invention relates to the technical field of doors and windows, in particular to a fireproof window.

Background

The fire window is a door and window product that is used for placing indoor intensity of a fire and outwards spreads, and traditional fire window generally closes to needs manual operation and just can reach the fire prevention effect, can not close by oneself when detecting the conflagration automatically.

In order to solve the problem that the traditional fire window cannot be automatically closed when a fire disaster is detected, an intelligent door window appears in the market, the automatic detection and control system is adopted to enable the window sash to be closed when the fire disaster occurs, and then the intelligent door window is high in cost.

Disclosure of Invention

In order to solve the problem that the cost of the existing intelligent door and window is high, the invention provides a fireproof window, which has the following specific technical scheme:

a fireproof window comprises a window frame, window sashes, pulleys and pull ropes, wherein one end of each window sash is hinged to the top end of the window frame through a hinge, a groove is formed in the circumferential surface of each pulley, each pulley is fixedly arranged on the upper portion of the window frame, one end of each pull rope is fixedly arranged at the other end of each window sash, each pull rope spans across the groove of each pulley, the fireproof window is characterized by further comprising two worm gears, worms, first connecting plates, transverse plates, connecting rods, a shell, a limit stop, a bimetallic strip, a second connecting plate, a baffle, first elastic films and spine portions, the two first connecting plates are parallel to each other, the worm gears are rotatably connected onto the window frame through rotating shafts, the other ends of the pull ropes are fixedly arranged on the rotating shafts, the worms penetrate through the two first connecting plates and are rotatably connected into the two first connecting plates, the worms are meshed with the worm gears, one end of each of the two first connecting plates is fixedly connected with two ends of the transverse plate, one end of each of the two connecting rods is fixedly connected with the middle of the transverse plate, a first circular notch is formed in each baffle, the edge of the first elastic film is hermetically connected with the peripheral edge of the first circular notch, the shell is installed on the window frame, the edge of each baffle is hermetically connected with the side wall of the inner cavity of the shell, the inner cavity of the shell is divided into an upper cavity and a lower cavity by the baffles and the first elastic film, the upper cavity is not communicated with the lower cavity, the upper cavity is filled with liquid, the connecting rods are connected with the side wall of the upper cavity in a sliding and sealing manner, the other ends of the connecting rods are located in the upper cavity, the limiting blocks are fixedly installed on the connecting rods and located in the upper cavity, the two second connecting plates are parallel to each other, and one end of each of the two second connecting plates is fixedly, the other ends of the two second connecting plates are respectively fixedly connected with two ends of the bimetallic strip, the passive layer of the bimetallic strip is positioned above the active layer, the spine part is fixedly connected with the passive layer of the bimetallic strip, the spine part is positioned under the first elastic film, and when the bimetallic strip is heated and heated to deform and bend, the spine part can pierce the first elastic film.

Optionally, the helix angle of the worm is less than the friction angle of the worm gear contact.

Optionally, the spine portion includes a first cone spine and a round bar, one end and the spine fixed connection of round bar, the other end and the passive layer fixed connection of bimetallic strip of round bar, the diameter of round bar is less than the diameter of the bottom surface of first cone spine, the diameter of the bottom surface of first cone spine is less than the diameter of first elastic membrane.

Optionally, the window frame, the first connecting plate and the second connecting plate are all made of aluminum alloy materials.

Optionally, the liquid is a lubricating grease.

The beneficial effects obtained by the invention comprise: through setting up worm wheel, worm, bimetallic strip and spine portion, in case the room takes place the conflagration and makes the bimetallic strip become crooked, spine portion punctures first elastic film, can make the worm move down and break away from the worm wheel under self action of gravity, and the casement will fall under its self action of gravity, makes door and window close, blocks indoor outdoor air convection, prevents that the intensity of a fire from spreading. Because the worm, the worm wheel, the bimetallic strip and other parts with low cost are adopted, compared with the existing fireproof window which adopts an automatic detection and control system to close the window sash when a fire disaster happens, the fireproof window has the advantages of simple integral structure and low cost. In addition, because the fire window does not adopt an automatic detection and control system, the problem of misjudgment caused by temperature data transmission errors or incapability of transmitting temperature data can be avoided.

Drawings

The present invention will be further understood from the following description taken in conjunction with the accompanying drawings, the emphasis instead being placed upon illustrating the principles of the embodiments.

FIG. 1 is a schematic view of an overall structure of a fire window according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a schematic structural diagram of a spike in an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the structural relationship between the coil spring, the housing and the connecting rod according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of the structural relationship between the adjusting bolt and the housing in the embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating the structural relationship between the cylindrical shape memory alloy, the second elastic membrane, and the second conical spike in an embodiment of the present invention;

FIG. 7 is a schematic diagram of the structural relationship between the cylindrical shape memory alloy and the second conical spike in an embodiment of the present invention.

Description of reference numerals:

1. a window frame; 2. a window sash; 3. a pulley; 4. a worm gear; 5. a worm; 6. a first connecting plate; 7. pulling a rope; 8. a housing; 9. a transverse plate; 10. a connecting rod; 11. a limit stop block; 12. a baffle plate; 13. a bimetal; 14. a first elastic film; 15. a spike portion; 150. a first conical spike; 151. a round bar; 16. a coil spring; 17. adjusting the bolt; 18. an upper chamber; 19. a lower chamber; 20. a second connecting plate; 130. a passive layer; 131. an active layer; 21. a cylindrical shape memory alloy; 22. a second elastic film; 23. the second cone is sharp.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof.

The invention relates to a fire window, which explains the following embodiments according to the attached drawings:

as shown in fig. 1, 2 and 3, a fire window includes a window frame 1, a window sash 2, a pulley 3 and a pull rope 7, wherein one end of the window sash 2 is hinged to the top end of the window frame 1 through a hinge, a groove is formed in the circumferential surface of the pulley 3, the pulley 3 is fixedly arranged on the upper portion of the window frame 1, one end of the pull rope 7 is fixedly arranged at the other end of the window sash 2, the pull rope 7 crosses the groove of the pulley 3, the fire window further includes a worm wheel 4, a worm 5, two first connecting plates 6, a transverse plate 9, a connecting rod 10, a housing 8, a limit stop 11, a bimetallic strip 13, a second connecting plate 20, a baffle plate 12, a first elastic film 14 and a spine portion 15, the first connecting plates 6 are provided with two blocks, the first connecting plates 6 are parallel to each other, the worm wheel 4 is rotatably connected to the window frame 1 through a rotating shaft, the worm 5 penetrates through the two first connecting plates 6 and is rotatably connected between the two first connecting plates 6, the worm 5 is meshed with the worm wheel 4, one end of each of the two first connecting plates 6 is fixedly connected with two ends of the transverse plate 9, one end of each of the connecting rods 10 is fixedly connected with the middle of the transverse plate 9, the baffle 12 is provided with a first circular notch, the edge of the first elastic film 14 is hermetically connected with the first circular notch, the shell 8 is installed on the window frame 1, the edge of the baffle 12 is hermetically connected with the side wall of the inner cavity of the shell 8, the baffle 12 and the first elastic film 14 divide the inner cavity of the shell 8 into an upper cavity 18 and a lower cavity 19, the upper cavity 18 is not communicated with the lower cavity 19, and the upper cavity 18 is filled with liquid, such as lubricating grease. Specifically, a sealed chamber (i.e., an upper chamber 18) is formed between the baffle plate 12, the first elastic membrane 14, the connecting rod 10, the limit stop 11 and the inner cavity of the housing 8, and the liquid is filled in the sealed chamber. The connecting rod 10 is connected with the side wall of the upper chamber 18 in a sliding and sealing manner, the other end of the connecting rod 10 is located in the upper chamber 18, the limiting block is fixedly mounted on the connecting rod 10 and located in the upper chamber 18, two second connecting plates 20 are arranged, the two second connecting plates 20 are parallel to each other, one ends of the two second connecting plates 20 are fixedly connected with the bottom surface of the lower chamber 19, the other ends of the two second connecting plates 20 are fixedly connected with two ends of the bimetallic strip 13 respectively, the passive layer 130 of the bimetallic strip is located above the active layer 131, the spine portion 15 is fixedly connected with the passive layer 130 of the bimetallic strip 13, the spine portion 15 is located under the first elastic film 14, and when the bimetallic strip 13 is heated and is bent, the spine portion 15 can pierce the first elastic film 14.

As shown in fig. 2 and 3, the bimetal 13 is elastically deformed when heated to an operating temperature. When a fire does not occur, the bimetal 13 is not deformed, the first elastic film 14 is not punctured by the sharp-pointed portion 15, the upper chamber 18 is filled with lubricating grease, the connecting rod 10, the first connecting plate 6, the transverse plate 9 and the worm 5 cannot move downwards, and the worm 5 is meshed with the worm wheel 4. The worm 5 is rotated to drive the worm wheel 4 to rotate, and the pull cord 7 is wound around the rotation shaft of the worm wheel 4 to be retracted or released, and the pull cord 7 slides on the pulley 3 to pull the window sash 2 to open or close. When a fire occurs, the indoor temperature rises, high-temperature gas diffuses to the outdoor through the window sash 2, so that the bimetallic strip 13 generates elastic deformation, the whole bimetallic strip is bent from the active layer 60 to the passive layer 61 side, the sharp part 15 approaches to the first elastic film 14 and punctures the first elastic film 14, and liquid in the upper chamber 18 flows into the lower chamber 19 from the notch of the first elastic film 14. At this moment, the connecting rod 10, the transverse plate 9, the first connecting plate 6 and the worm 5 move downwards under the self gravity to separate the worm 5 from the worm wheel 4, the window sash 2 falls and is closed under the self gravity to block the indoor and outdoor air circulation, so that the indoor high-temperature gas diffusion can be prevented, the fire spread can be prevented, and the outdoor air can be prevented from entering the room, so that the indoor flame can be automatically extinguished due to the exhaustion of oxygen.

As shown in fig. 2 again, in order to ensure that the window sash 2 can be opened or closed smoothly by rotating the worm 5 in the case of a fire, the limit stopper 11 should be in contact with the top surface of the upper chamber 18 and the worm wheel 4 should be engaged with the worm 5 once. Specifically, during installation, the worm 5 may be engaged with the worm wheel 4, the limit stopper 11 may be brought into contact with the top surface of the upper chamber 18, and then the upper chamber 18 may be filled with grease. By adjusting the amount of lubricating grease in the upper chamber 18 and the position of the limit stop 11 on the connecting rod 10, the worm 5 and the worm wheel 4 can be meshed together, and the friction force between the worm 5 and the worm wheel 4 is not too large, so that the worm 5 can be smoothly rotated to drive the worm wheel 4 to rotate, and further the opening degree of a door window can be adjusted.

Through setting up worm wheel 4, worm 5, bimetallic strip 13 and spine portion 15, in case the room takes place the conflagration and makes bimetallic strip 13 take place elastic deformation, spine portion 15 punctures first elastic film 14, can make worm 5 move down and break away from worm wheel 4 under self action of gravity, and casement 2 will fall under its self action of gravity, makes door and window close, blocks indoor outdoor air convection, prevents that the intensity of a fire from spreading. Because the parts such as the worm 5, the worm wheel 4, the bimetallic strip 13 and the like with low cost are adopted, compared with the existing fireproof window which adopts an automatic detection and control system to close the window sash 2 when a fire disaster happens, the fireproof window has simple integral structure and lower cost. In addition, because the fire window does not adopt an automatic detection and control system, the problem of misjudgment caused by temperature data transmission errors or incapability of transmitting temperature data can be avoided.

In some embodiments, the helix angle of the worm 5 is less than the angle of friction of the worm gear 5 contact. In this way, a self-locking of the worm 5 and the worm wheel 4 can be achieved, so that the worm wheel 4 can only be driven by the worm 5. When a fire disaster does not happen, the window sash 2 can be conveniently opened to a certain angle by rotating the worm 5, so that the worm wheel 4 cannot rotate under the self gravity of the window sash 2, and the worm 5 is driven to rotate, so that the window sash 2 is automatically closed under the self gravity.

In some embodiments, as shown in fig. 3, the spike part 15 includes a first conical spike 150 and a round rod 151, one end of the round rod 151 is fixedly connected to the bottom surface of the first conical spike 150, the other end of the round rod 151 is fixedly connected to the passive layer 130 of the bimetal 13, the diameter of the round rod 151 is smaller than that of the bottom surface of the first conical spike 150, and the diameter of the bottom surface of the first conical spike 150 is smaller than that of the first elastic membrane 14. Thus, when the first conical spike 150 pierces the first elastic membrane 14 and completely enters the upper chamber 18, the liquid in the upper chamber 18 can smoothly flow out from the split of the first elastic membrane 14, so that the worm 5 and the worm wheel 4 can smoothly separate from each other. Furthermore, the lateral surface of the first conical spike 150 is further provided with a plurality of grooves parallel to the generatrix direction thereof, so that when the first conical spike 150 pierces the first elastic membrane 14, the lubricating grease in the upper chamber 18 can flow into the lower chamber 19 through the grooves.

In some embodiments, the window frame 1, the outer shell 8, the first connecting plate 6, and the second connecting plate 20 are all made of aluminum alloy material. Therefore, the temperature of the window frame 1 can be better sensed and transmitted to the bimetallic strip 13, and the fireproof performance of the fireproof window is improved.

In this example, as shown in fig. 4, the protection device further includes a coil spring 16, the coil spring 16 is disposed in the upper chamber 18 and one end of the coil spring 16 is fixedly connected to the other end of the connecting rod 10, and the other end of the coil spring 16 is fixedly connected to the baffle 12; in the case of a non-fire, the coil spring 16 is in an extended state and the limit stopper 11 is in contact with the top surface of the upper chamber 18, and the worm 5 is engaged with the worm wheel 4. Thus, by means of the elastic force stored by the coil spring 16 when no fire occurs, when a fire occurs, the spike portion 15 pierces the first elastic membrane 14, the lubricating grease flows from the upper chamber 18 to the lower chamber 19, and the connecting rod 10, the cross plate 9, the first connecting plate 6 and the worm 5 move downward under the elastic force of the coil spring 16, so that the worm 5 and the worm wheel 4 can be smoothly separated.

Further, the first elastic film 14 is not located opposite to the coil spring 16, so that the coil spring 16 can avoid affecting the spike portion 15, and the spike portion 15 can smoothly puncture the first elastic film 14.

In this example, as shown in fig. 5, the protection device further comprises an adjusting bolt 17, the adjusting bolt 17 is in threaded connection with the side wall of the upper chamber 18, one end of the adjusting bolt is located in the upper chamber 18, and the other end of the adjusting bolt is located outside the housing 8. Thus, by rotating the adjusting bolt 17, the position of the upper chamber 18 at one end of the adjusting bolt 17 can be adjusted, so that the positions of the connecting rod 10, the transverse plate 9, the first connecting plate 6 and the worm 5 can be well adjusted, and the friction force between the worm 5 and the worm wheel 4 when a fire disaster does not happen can be adjusted.

In some embodiments, the bimetal 13 is a snap-type bimetal disc, and the actuation temperature is greater than 85 degrees celsius and the reset temperature is less than 65 degrees celsius. The bimetal 13 is a snap-type bimetal disc, so that the spike part 15 can rapidly puncture the first elastic film 14 when a fire occurs, so as to close the door and window and prevent the fire from spreading.

In the present invention, the sizes of the spike portion 15 and the second connecting plate 20, as well as the bending degree of the bimetal 13 when heated and elastically deformed, may be selected according to the position distance between the spike portion 15 and the first elastic film 14 when no fire occurs, and it is assumed that the spike portion 15 can puncture the first elastic film 14 and make the lubricating grease in the upper chamber smoothly flow out, which is not described herein again.

In some embodiments, as shown in fig. 6 and 7, in order to avoid the problem that the fire window fails to close in time when a fire occurs due to the failure of the bimetal 13, the fire window further includes a cylindrical shape memory alloy 21, a second elastic membrane 22 and a second conical spike 23, wherein the cylindrical shape memory alloy 21 has a characteristic of being elongated along an axial direction thereof with the increase of the temperature thereof and has a phase transition temperature of more than 100 degrees and less than 200 degrees. One end of the cylindrical shape memory alloy 21 is fixedly connected with the bottom surface of the lower chamber 19, the other end of the cylindrical shape memory alloy is fixedly connected with the bottom surface of the second conical spine 23, a second circular gap is arranged in the baffle 12, and the edge of the second elastic film 22 is hermetically connected with the peripheral edge of the second circular gap. When a fire breaks out in a room and the temperature of the cylindrical shape memory alloy 21 is higher than 100 ℃, the cylindrical shape memory alloy extends along the axial direction and enables the second conical spikes 23 to puncture the second elastic film 22, lubricating grease in the upper chamber 18 flows into the lower chamber 19 at the moment, the worm 5 is separated from the worm wheel 4 under the elastic force of the spiral spring 16, the window is closed, and air circulation outside the chamber is blocked, so that the fire spread is prevented. The cylindrical shape memory alloy 21, the second elastic film 22 and the second conical spikes 23 are arranged to provide double protection for the fire window, so that the fire window can be closed in case of fire.

The diameter of the cylindrical shape memory alloy 21 is smaller than the diameter of the bottom surface of the second conical spike 23, so that when the second conical spike 23 pierces the second elastic film 22 and completely enters the upper chamber 18, the liquid in the upper chamber 18 can smoothly flow out from the gap of the second elastic film 22, and the worm 5 and the worm wheel 4 can smoothly separate from each other. Furthermore, the lateral surface of the second conical spike 23 is further provided with a plurality of grooves parallel to the generatrix direction thereof, so that when the second conical spike 23 pierces the second elastic membrane 22, the lubricating grease in the upper chamber 18 can flow into the lower chamber 19 through the grooves.

In summary, the fire window disclosed in the present invention has the following beneficial effects: through setting up worm wheel, worm, bimetallic strip and spine portion, in case the room takes place the conflagration and makes the bimetallic strip become crooked, spine portion punctures first elastic film, can make the worm move down and break away from the worm wheel under self action of gravity, and the casement will fall under its self action of gravity, makes door and window close, blocks indoor outdoor air convection, prevents that the intensity of a fire from spreading. Because the worm, the worm wheel, the bimetallic strip and other parts with low cost are adopted, compared with the existing fireproof window which adopts an automatic detection and control system to close the window sash when a fire disaster happens, the fireproof window has the advantages of simple integral structure and low cost. In addition, because the fire window does not adopt an automatic detection and control system, the problem of misjudgment caused by temperature data transmission errors or incapability of transmitting temperature data can be avoided.

Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.

Claims

1. A fireproof window comprises a window frame, window sashes, pulleys and pull ropes, wherein one end of each window sash is hinged to the top end of the window frame through a hinge, a groove is formed in the circumferential surface of each pulley, each pulley is fixedly arranged on the upper portion of the window frame, one end of each pull rope is fixedly arranged at the other end of each window sash, each pull rope spans across the groove of each pulley, the fireproof window is characterized by further comprising two worm gears, worms, first connecting plates, transverse plates, connecting rods, a shell, a limit stop, a bimetallic strip, a second connecting plate, a baffle, first elastic films and spine portions, the two first connecting plates are parallel to each other, the worm gears are rotatably connected onto the window frame through rotating shafts, the other ends of the pull ropes are fixedly arranged on the rotating shafts, the worms penetrate through the two first connecting plates and are rotatably connected into the two first connecting plates, the worms are meshed with the worm gears, one end of each of the two first connecting plates is fixedly connected with two ends of the transverse plate, one end of each of the two connecting rods is fixedly connected with the middle of the transverse plate, a first round notch is formed in each baffle, the edge of each first elastic film is hermetically connected with the corresponding first round notch, the shell is installed on the window frame, the edge of each baffle is hermetically connected with the side wall of the inner cavity of the shell, the inner cavity of the shell is divided into an upper cavity and a lower cavity by the baffles and the first elastic films, the upper cavity is not communicated with the lower cavity, the upper cavity is filled with liquid, the connecting rods are connected with the side wall of the upper cavity in a sliding and sealing manner, the other ends of the connecting rods are located in the upper cavity, the limiting blocks are fixedly installed on the connecting rods and located in the upper cavity, the two second connecting plates are parallel to each other, and one ends of the two second connecting plates are fixedly connected with the, the other ends of the two second connecting plates are respectively fixedly connected with two ends of the bimetallic strip, the passive layer of the bimetallic strip is positioned above the active layer, the spine part is fixedly connected with the passive layer of the bimetallic strip, the spine part is positioned under the first elastic film, and when the bimetallic strip is heated and heated to deform and bend, the spine part can pierce the first elastic film.

2. A fire protection window according to claim 1, wherein the bimetallic strip is a snap-action bimetallic disc.

3. A fire protection window according to any preceding claim, wherein the trip bimetal disc has an operating temperature of greater than 85 degrees celsius and a reset temperature of less than 65 degrees celsius.

4. A fire window according to any preceding claim, wherein the spike comprises a first conical spike and a round rod, one end of the round rod is fixedly connected to the spike, the other end of the round rod is fixedly connected to the passive layer of the bimetallic strip, the diameter of the round rod is smaller than the diameter of the bottom surface of the first conical spike, and the diameter of the bottom surface of the first conical spike is smaller than the diameter of the first elastic membrane.

5. A fire window according to any preceding claim, wherein the first conical spike has a plurality of grooves formed in the side surface thereof parallel to the generatrix direction thereof.

6. A fire window according to any of the preceding claims, wherein the window frame, the first connecting plate and the second connecting plate are made of aluminium alloy material.

7. A fire protection window according to any of the preceding claims, wherein the liquid is a grease.