CN111877947A

CN111877947A - Aluminum alloy fireproof window

Info

Publication number: CN111877947A
Application number: CN202010756553.5A
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 an aluminum alloy fireproof window which comprises a window frame, a window, a pulley, a pull rope, a worm gear, a worm, two supporting plates and a bimetallic strip, wherein one end of the window is hinged to the upper end of the window frame, the pulley is fixedly arranged on the upper part of the window frame, one end of the pull rope is fixedly arranged at the other end of the window, the worm gear is rotatably connected onto the window frame, the other end of the pull rope is fixedly arranged on a rotating shaft, the worm is rotatably connected onto the two supporting plates and is meshed with the worm gear, the two supporting plates are fixedly arranged on an active layer of the bimetallic strip, the bimetallic strip is fixedly arranged on the window frame, and the active layer of the bimetallic; when no fire occurs, the worm is meshed with the worm wheel; when a fire occurs, the worm is separated from the worm wheel. The fire-proof window is provided with the worm, the worm wheel and the bimetallic strip, so that the fire-proof window can be automatically closed when a fire disaster occurs, the fire spread is avoided, the whole structure is simple, the cost is lower, and the fire-proof window is suitable for popularization.

Description

Aluminum alloy fireproof window

Technical Field

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

Background

A fire refers to a disaster caused by combustion that is out of control in time or space. Among the various disasters, fire is one of the main disasters that threaten public safety and social development most often and most generally. Three conditions are required for the formation of a fire: combustible materials, air and fire sources, and fire extinguishing is usually carried out by methods of suffocation, cooling, fire species removal and the like after a fire occurs. When a fire occurs, the indoor temperature reaches 400 ℃ and gradually rises, and it is necessary to take fire prevention measures to control the spread or spread of the fire. Most of the existing fire windows adopt an automatic detection and control system to close the window when a fire disaster happens, and the existing fire windows are complex in structure and high in cost.

After a lot of research, some typical prior arts are found, for example, patent application No. 201710563369.7 discloses an automatic closing system for a fire window, which has a simple structure, can realize an automatic closing function of the window in case of fire, and has high safety. As shown, the patent application No. 201610926636.8 discloses an automatic closing apparatus for a fire window, which has a simple structure, can perform an automatic closing function of the window in the case of a fire, and has high safety. As also shown, application No. 201710985772.9 discloses a self-closing and safety releasable fire window that can be automatically closed in the event of a fire, opened from the outside in the event of a fire, and released by removal if the handle fails.

In summary, there are many practical problems to be solved (such as simplifying the structure of the fire window or reducing the cost) in the practical application of the fire window.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides an aluminum alloy fireproof window, which has the following specific technical scheme:

an aluminum alloy fireproof window comprises a window frame, a window, pulleys and a pull rope, wherein one end of the window is hinged to the upper end of the window frame through a hinge, the pulleys are fixedly arranged at the top end of the window frame, the pull rope crosses over a groove of the pulleys, one end of the pull rope is fixedly arranged at the other end of the window, the fireproof window further comprises a worm gear, a worm, two parallel supporting plates and a bimetallic strip, the worm gear is rotatably connected onto the window frame through a rotating shaft, the other end of the pull rope is fixedly arranged on the rotating shaft, the worm penetrates through the two supporting plates and is rotatably connected onto the two supporting plates and meshed with the worm gear, the two supporting plates are fixedly arranged on an active layer of the bimetallic strip, two ends of the bimetallic strip are respectively fixedly arranged on the window frame, and the active layer of;

when a fire disaster does not happen, the bimetallic strip is not deformed, and the worm is meshed with the worm wheel;

when a fire disaster happens, the bimetallic strip deforms, and the worm is separated from the worm wheel.

Optionally, the window frame, the worm wheel, the worm and the support plate are all made of metal materials with good thermal conductivity, and the metal materials can be aluminum alloy. The window frame, the worm wheel, the worm and the supporting plate are all made of metal materials with good heat conductivity, the temperature around the window edge can be sensed better, and the fireproof performance is improved.

Optionally, the helix angle of the worm is less than the friction angle of the worm gear contact. The expansion helical angle of the worm is larger than the contact friction angle of the worm gear and the worm, and a self-locking effect can be achieved.

Optionally, the bimetallic strip is at least three layers of thermal bimetallic strips. In this way, stability of the fire window may be provided.

The beneficial effects obtained by the invention comprise: through setting up worm, worm wheel and bimetallic strip, can make fire window self-closing when the conflagration takes place, avoid the intensity of a fire to stretch, its overall structure is simple, and the cost is lower, is fit for promoting.

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 aluminum alloy 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 protection device in an embodiment of the present invention.

Description of reference numerals:

1. a window frame; 2. a window; 3. a pulley; 4. a worm gear; 5. a worm; 6. a bimetal; 7. a support plate; 8. pulling a rope; 60. an active layer; 61. a passive layer; 9. a housing; 10. a connecting plate; 11. a first transverse plate; 12. a connecting rod; 13. a second transverse plate; 14. a limit stop block; 15. a temperature sensitive deformation member; 16. an elastic member.

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; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.

The invention relates to an aluminum alloy fireproof window, which explains the following embodiments according to the attached drawings:

the first embodiment is as follows:

as shown in fig. 1, an aluminum alloy fireproof window comprises a window frame 1, a window 2, a pulley 3 and a pull rope 8, wherein one end of the window 2 is hinged to the upper end of the window frame 1 through a hinge, a central shaft of the pulley 3 is fixedly arranged at the top end of the window frame 1, a groove is formed in the circumferential surface of the pulley 3, the pull rope 8 is wound in the groove of the pulley 3, and one end of the pull rope 8 is fixedly arranged at the other end of the window 2.

As shown in fig. 1 and 2, the fire window further includes a worm wheel 4, a worm 5, two parallel support plates 7, and a bimetal 6, wherein the worm wheel 4 is rotatably connected to the window frame 1 through a rotating shaft. The other end of the pull rope 8 is fixedly arranged on the rotating shaft, the worm 5 penetrates through the two support plates 7 and is rotatably connected to the two support plates 7 and is meshed with the worm wheel 4, the two support plates 7 are fixedly arranged on the active layer 60 of the bimetallic strip 6, the two ends of the bimetallic strip 6 are respectively fixedly arranged on the window frame 1, and the active layer 60 of the bimetallic strip 6 is positioned above the passive layer 61 of the bimetallic strip 6. Specifically, the two ends of the bimetal 6 are fixed in the window frame 1 through the connecting rod, and a gap is left between the bimetal and the surface of the window frame 1, so that the bimetal 6 can be bent and deformed normally at high temperature.

When no fire occurs, the bimetallic strip 6 is not deformed, and the worm 5 is meshed with the worm wheel 4. The worm 5 is rotated to rotate the worm wheel 4, and the pull cord 8 is wound around the rotation shaft of the worm wheel 4 to be retracted or released, and the pull cord 8 slides on the pulley 3 to pull the window 2 to be opened or closed.

When a fire disaster occurs, the indoor temperature rises, and high-temperature gas diffuses to the outdoor through the window 2, so that after the bimetallic strip 6 is gradually heated to the deformation temperature, the bimetallic strip 6 deforms, the whole bimetallic strip is bent from the driving layer 60 to one side of the driven layer 61, the worm 5 is driven to move to one side of the driven layer 61, and then the worm 5 is separated from the worm wheel 4. Under window 2's self action of gravity, the winding is at 4 epaxial stay cords 8 of epaxial releases of worm wheel and is loosened, and window 2 will fall automatically and close, blocks indoor outer circulation of air, so not only can prevent indoor high temperature gas diffusion, prevent that the intensity of a fire from stretching, also can avoid outdoor air to get into indoorly, make indoor flame extinguish by oneself because of oxygen exhausts.

When indoor flame goes out and the indoor temperature is reduced, the bimetallic strip 6 is restored to the original shape, the worm 5 is re-meshed with the worm wheel 4, and the window 2 can be opened again by rotating the worm 5.

Example two:

as shown in fig. 1, an aluminum alloy fireproof window comprises a window frame 1, a window 2, a pulley 3 and a pull rope 8, wherein one end of the window 2 is hinged to the upper portion of the window frame 1 through a hinge, a central shaft of the pulley 3 is fixedly arranged at the top end of the window frame 1, and one end of the pull rope 8 is fixedly arranged at the other end of the window 2.

As shown in fig. 1 and 2, the fire window further includes a worm wheel 4, a worm 5, two parallel support plates 7 and a bimetal 6, the worm wheel 4 is rotatably connected to the window frame 1 through a rotating shaft, the other end of the pull rope 8 is fixedly arranged on the rotating shaft, the worm 5 penetrates through the two support plates 7 and is rotatably connected to the two support plates 7 and is engaged with the worm wheel 4, the two support plates 7 are fixedly arranged on an active layer 60 of the bimetal 6, the bimetal 6 is fixedly arranged on the window frame 1, and the active layer 60 of the bimetal 6 is located above a passive layer 61 of the bimetal 6.

As a preferable technical solution, the bimetal 6 is a snap-type bimetal disc, and the operating temperature thereof is above 85 ℃, and the reset temperature thereof is below 65 ℃. The bimetallic strip 6 is set as a snap-action bimetallic disk, so that the opening and closing stability of the fire window can be improved, and the automatic closing action of the fire window is prevented from being mistaken.

The worm wheel 4, the worm 5, the window frame 1, and the support plate 7 are made of a metal material having good thermal conductivity, and the metal material is preferably an aluminum alloy having good thermal conductivity. So can sense better and transmit the temperature of window frame to bimetallic strip, improve fire window's fire behavior.

The weight of the window 2 differs due to the different profiles. In order to prevent the bimetallic strip 6 from deforming and bending under the gravity action of the worm 5 and the supporting plate 7 to cause the worm and the worm wheel to be separated from contact, the window is closed under the gravity action of the window, and the stability of the fireproof window is improved. The bimetallic strip 6 can be two-layer, three-layer, four-layer or multi-layer thermal bimetallic strip 6 according to actual conditions, and the description of the embodiment is omitted.

As a preferable technical solution, the unwinding helix angle of the worm 5 is smaller than the friction angle 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 only the worm 5 can drive the worm wheel 4. When a fire disaster does not happen, the window 2 can be conveniently opened to a certain angle by rotating the worm 5, the worm wheel 4 cannot rotate under the self gravity of the window 2, and then the worm 5 is driven to rotate, so that the window 2 is automatically closed under the self gravity.

Example three:

The width of the two supporting plates 7 is smaller than that of the bimetallic strip 6, and the two supporting plates 7 are arranged in the middle of the bimetallic strip 6. When the bimetallic strip 6 is bent into an arc shape at a certain radius due to high temperature, the downward displacement of the support plate 7 should be greater than the tooth height of the worm 5, so that the worm 5 is completely separated from the worm wheel 4, and the worm wheel 4 can freely rotate under the action of the self gravity of the window 2 and the pull rope 8 until the window 2 falls down and is closed. The specific dimensions of the bimetal 6 and the support plate 7 can be set by those skilled in the art according to actual conditions, and are not described in detail herein.

The worm wheel 4, the worm 5, the window frame 1, and the support plate 7 are made of a metal material having good thermal conductivity, and the metal material is preferably an aluminum alloy having good thermal conductivity.

The weight of the window 2 differs due to the different profiles. In order that the bimetallic strip 6 is not deformed and bent under the gravity action of the worm 5 and the supporting plate 7, the bimetallic strip 6 can be two-layer, three-layer, four-layer or multi-layer thermal bimetallic strip 6 according to actual conditions, and the description of the embodiment is omitted.

Example four:

as shown in fig. 1, the aluminum alloy fireproof window comprises a window frame 1, a window 2, a pulley 3 and a pull rope 8, wherein one end of the window 2 is hinged to the upper portion of the window frame 1 through a hinge. The center shaft of the pulley 3 is fixedly arranged at the top end of the window frame 1, one end of the pull rope 8 is fixedly arranged at the other end of the window 2, and specifically, one end of the pull rope 8 is arranged in the middle of one side frame of the window 2 far away from the window frame 1. The other end of the pull rope 8 crosses the groove of the pulley 3 through the outer side of the window 2 and then is fixedly connected with the rotating shaft.

The width of the two supporting plates 7 is smaller than that of the bimetallic strip 6, and the two supporting plates 7 are arranged at the position, close to the middle part, of the bimetallic strip 6. When the bimetallic strip 6 is bent into an arc shape at a certain radius due to high temperature, the downward displacement of the support plate 7 should be greater than the tooth height of the worm 5, so that the worm 5 is completely separated from the worm wheel 4, and the worm wheel 4 can freely rotate under the action of the self gravity of the window 2 and the pull rope 8 until the window 2 falls down and is closed. The specific dimensions of the bimetal 6 and the support plate 7 can be set by those skilled in the art according to actual conditions, and are not described in detail herein.

In order to prevent the bimetal 6 from failing to close the fire window in time when a fire occurs, as shown in fig. 3, in the present embodiment, the fire window further includes a protection device, and the protection device includes a housing 9, a connecting plate 10, a first transverse plate 11, a connecting rod 12, a second transverse plate 13, a limit stop 14, a temperature-sensitive deformation member 15, and an elastic member 16.

The outer shell 9 is made of aluminum alloy material with good thermal conductivity so as to better sense the temperature of the window frame and a room, is in a hollow square tube shape, is arranged on the window frame and is positioned below the bimetallic strip; the connecting plate 10 is provided with two connecting plates 10, one end of each connecting plate 10 is fixedly connected with two ends of a bimetallic strip, the other ends of the two connecting plates 10 are fixedly connected with two ends of a first transverse plate 11, one end of a connecting rod 12 is fixedly connected with the middle of the first transverse plate 11, the other end of the connecting rod 12 penetrates through the shell 9 and then is located in an inner cavity of the shell 9, the middle of a second transverse plate 13 is fixedly connected with the other end of the connecting rod 12, the first transverse plate 11 is parallel to the second transverse plate 13, and a limiting block is fixedly mounted on the connecting rod 12 and located in the inner cavity of the shell 9.

The elastic component 16 is located between the second horizontal plate 13 and the bottom surface of the inner cavity of the housing 9, that is, one end of the elastic component 16 is fixedly connected with the bottom surface of the inner cavity of the housing 9, and the other end of the elastic component 16 is fixedly connected with the bottom of the second horizontal plate 13. Specifically, the elastic member 16 is a coil spring. By setting the distance between the protection device and the worm and worm wheel and adjusting the length of the spiral spring, the connecting rod 12 and the connecting plate 10, the worm and the worm wheel can be better meshed together by utilizing the elasticity of the spiral spring.

In practical application, when the fire window is normally opened and closed, the spiral spring is in a compressed state, certain elastic force is generated by the spiral spring to enable the connecting rod 12, the connecting plate 10, the bimetallic strip and the worm to keep an upward movement trend, and the worm 5 and the worm wheel 4 are meshed together under the elastic force of the spiral spring. At this time, the limit stop 14 contacts with the top surface of the inner cavity of the housing 9 to limit the connecting rod 12 and the second transverse plate 13 to move upwards continuously, so as to avoid that the worm 5 and the worm wheel 4 are too large in friction force to drive the worm wheel smoothly through the worm. So, when the bimetallic strip is bent into the arc with certain radius because of high temperature, the backup pad displacement volume downwards is greater than the tooth height of worm, and worm wheel break away from completely, and fire window self-closing under window self action of gravity.

The two temperature-sensitive deformation components 15 are respectively arranged at two sides of the connecting rod 12, one end of each of the two temperature-sensitive deformation components 15 is respectively arranged on the top surface of the inner cavity of the shell 9, and the other end of each of the two temperature-sensitive deformation components 15 is suspended and is positioned right above the second transverse plate 13. The temperature sensing deformation member 15 has a characteristic of extending along an axial direction thereof at a specific temperature, and when a fire occurs, the temperature sensing deformation member 15 extends and contacts the second transverse plate 13, and the second transverse plate 13 and the connecting rod 12 move downward after overcoming the elastic force of the coil spring, so as to drive the worm to be separated from the worm wheel. Specifically, the temperature-sensitive deformation member 15 is a cylindrical shape memory alloy, and the specific temperature is a phase transition temperature of the shape memory alloy, which is greater than 100 degrees and less than 200 degrees.

The length of the cylindrical shape memory alloy and the phase transition temperature thereof can be selected according to actual conditions, and are not described herein again.

In summary, the aluminum alloy fireproof window disclosed by the invention has the following beneficial technical effects: through setting up worm, worm wheel and bimetallic strip, can make fire window self-closing when the conflagration takes place, avoid the intensity of a fire to stretch, its overall structure is simple, and the cost is lower, is fit for promoting.

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. That is, the methods, systems, and devices discussed above are examples, and various configurations may omit, replace, or add various processes or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many of the elements are examples and do not limit the scope of the disclosure or claims.

Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, such as well-known circuits, processes, algorithms, structures, and techniques, which have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. 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. An aluminum alloy fireproof window comprises a window frame, a window, a pulley and a pull rope, wherein one end of the window is hinged at the upper end of the window frame through a hinge, the pulley is fixedly arranged at the top end of the window frame, the pull rope crosses over the groove of the pulley, one end of the pull rope is fixedly arranged at the other end of the window, it is characterized in that the fireproof window also comprises a worm wheel, a worm, two parallel supporting plates and a bimetallic strip, the worm wheel is rotatably connected on the window frame through a rotating shaft, the other end of the pull rope is fixedly arranged on the rotating shaft, the worm penetrates through the two support plates, is rotatably connected to the two support plates and is meshed with the worm wheel, the two support plates are fixedly arranged on the active layer of the bimetallic strip, two ends of the bimetallic strip are respectively and fixedly arranged on the window frame, and the active layer of the bimetallic strip is positioned above the passive layer of the bimetallic strip;

2. The aluminum alloy fire window of claim 1, wherein the window frame is made of an aluminum alloy material.

3. An aluminium alloy fire window according to any one of the preceding claims, wherein the helix angle of the worm is less than the angle of friction of the worm gear contact.

4. An aluminium alloy fire window according to any one of the preceding claims, wherein the bimetal is a thermal bimetal of at least three layers.