Temperature control release device

Abstract

The utility model provides a temperature control release device, which comprises a fixed shell, a movable shell, a thermosensitive connecting piece, an elastic element and a pull wire, the fixing shell is used for being installed on a wall around the fire resisting shutter or an exposed part of a suspended ceiling. The movable shell is slidably connected to the fixed shell; one end of the thermosensitive connecting piece is connected with the fixed shell, and the other end is connected with the movable shell; the elastic element is arranged between the fixed shell and the movable shell and is in a compressed state; one end of the stay wire is connected with a brake release rod of the door roller, and the other end penetrates through the fixed shell and is connected with the movable shell; the thermosensitive connecting piece is used for being broken when the temperature exceeds a threshold value, and the movable shell is far away from the fixed shell under the jacking force released by the elastic element so that the pull wire can pull the brake release rod. The temperature control release device provided by the utility model can improve the response timeliness of automatic descending and closing of the fire resisting shutter according to self weight under the condition of power failure, and reduces the dependence on manual operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof rolling curtains, and particularly relates to a temperature control release device. Background Art

[0002] Fire shutters use transmission devices and control systems to raise and lower the curtain, providing fire protection and isolation. They are typically installed in commercial, industrial, and residential buildings. Because fires are often accompanied by power outages, fire shutters must be able to close solely by their own weight, independent of external power sources.

[0003] In existing technology, fire shutters have an exposed brake release lever on the shutter mechanism. When a fire occurs and the power goes out, the brake release lever can be manually operated to release the braking force of the shutter mechanism, allowing the fire curtain to close under its own weight. The problem is that large commercial complexes often have a large number of fire shutters, and the shutter mechanisms themselves are installed at a high position. This makes it difficult to close all the fire shutters quickly in the event of a fire. Failure to close the fire shutters in a timely manner can easily cause the fire to spread. Furthermore, relying entirely on manual operation during a power outage poses a significant threat to the operator's safety. Utility Model Content

[0004] The embodiment of the present utility model provides a temperature-controlled release device, which is intended to improve the timeliness of the response of the fireproof roller shutter to automatically descend and close under its own weight in the event of a power outage, and reduce the dependence on manual operation.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by the utility model is: in the first aspect, a temperature-controlled release device is provided, including a fixed shell, a movable shell, a thermosensitive connector, an elastic element, and a pull wire; the fixed shell is used to be installed on the wall or exposed part of the ceiling around the fireproof rolling shutter; the movable shell is slidably connected to the fixed shell; one end of the thermosensitive connector is connected to the fixed shell, and the other end is connected to the movable shell; the elastic element is arranged between the fixed shell and the movable shell and is in a compressed state; one end of the pull wire is used to connect to the brake release rod of the rolling door machine, and the other end passes through the fixed shell and is connected to the movable shell; wherein, the thermosensitive connector is used to break when the temperature exceeds a threshold value, and the movable shell moves away from the fixed shell under the top thrust released by the elastic element so that the pull wire pulls the brake release rod.

[0006] In combination with the first aspect, in a possible implementation, the thermally sensitive connecting piece includes two thermally conductive connecting pieces, which are respectively connected to the fixed shell and the movable shell, and the two thermally conductive connecting pieces are fixed by welding with a fusible alloy solder, and the fusible alloy solder is used to melt when the temperature exceeds a threshold.

[0007] In some embodiments, the thermally conductive connecting piece is a copper piece, and the fusible alloy solder is a tin-bismuth alloy solder; wherein solder holes for filling the fusible alloy solder are staggeredly distributed on the two thermally conductive connecting pieces.

[0008] Exemplarily, a first hook is provided on the outer surface of the fixed shell, a second hook is provided on the outer surface of the movable shell, one of the heat-conducting connecting plates is provided with a first connecting hole connected to the first hook, and the other heat-conducting connecting plate is provided with a second connecting hole connected to the second hook.

[0009] In combination with the first aspect, in one possible implementation, the thermally sensitive connector includes a sealed glass tube and a thermal expansion filler filled in the sealed glass tube, one end of the sealed glass tube is connected to the fixed shell, and the other end is connected to the movable shell, and the thermal expansion filler is used to burst the sealed glass tube when the temperature exceeds a threshold.

[0010] Exemplarily, at least one end of the sealed glass tube is provided with a metal heat conducting head, and the thermal expansion filler is mercury.

[0011] In some embodiments, the pull wire is a core-pulling pull wire, one end of the wire sleeve of the core-pulling pull wire is connected to the bracket installed on the rolling door machine, and the other end is connected to the fixed shell. One end of the wire core of the core-pulling pull wire is connected to the brake release rod, and the other end is connected to the movable shell.

[0012] Exemplarily, a pull rod is provided on the movable shell, and one end of the wire core is connected to the pull rod.

[0013] For example, the pull rod is slidably connected to the movable shell, and an adjusting nut is threaded on the pull rod, and the adjusting nut abuts against the outer wall of the movable shell facing away from the fixed shell.

[0014] In some embodiments, a manual pull ring is provided at the end of the pull rod passing through the movable shell.

[0015] The beneficial effect of the temperature-controlled release device provided by the utility model is that compared with the prior art, the temperature-controlled release device of the utility model is installed on the exposed part of the wall or ceiling around the fireproof rolling shutter for convenient manual operation. In the initial state, the fixed shell is connected to the movable shell by a thermosensitive connector, so that the elastic element is in a compressed state. When a fire occurs, the ambient temperature rises, causing the temperature of the thermosensitive connector to break when it exceeds the threshold. The movable shell can be moved away from the fixed shell under the action of the elastic top thrust released by the elastic element, so that the brake release rod of the roller door machine connected to the movable shell is pulled by the wire to release the brake of the roller door machine, so that the fireproof rolling shutter is automatically closed under its own gravity. Not only can the fireproof rolling shutter be automatically closed under its own weight without manual labor in the event of a power outage, thereby reducing the threat to the personal safety of the operator posed by the fire, but in particular, the sensitivity of the thermosensitive connector to the ambient temperature can be utilized to improve the timeliness of the response of the fireproof rolling shutter to automatically close based on its own weight, thereby avoiding the spread of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of the temperature control release device provided by an embodiment of the present utility model when the heat-sensitive connector is intact;

[0017] Figure 2 A schematic diagram of the structure of the temperature-controlled release device provided by an embodiment of the present utility model after the heat-sensitive connector is broken;

[0018] Figure 3 This is a schematic cross-sectional view of a heat-sensitive connector used in one embodiment of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of a heat-sensitive connector used in another embodiment of the present invention.

[0020] In the figure: 10, fixed shell; 11, first hook; 20, movable shell; 21, second hook; 22, pull rod; 221, adjusting nut; 222, manual pull ring; 30, thermal connector; 301, sealed glass tube; 302, thermal expansion filler; 303, metal thermal head; 31, thermal conductive connecting piece; 311, first connecting hole; 312, second connecting hole; 313, welding hole; 32, fusible alloy solder; 40, elastic element; 50, pull wire; 51, wire sleeve; 52, wire core; 60, brake release lever; 70, bracket. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0023] Please also refer to Figures 1 to 4 The temperature-controlled release device provided by the present invention is now described. The temperature-controlled release device includes a fixed shell 10, a movable shell 20, a heat-sensitive connector 30, an elastic element 40, and a pull wire 50. The fixed shell 10 is used to be installed on the exposed part of the wall or ceiling around the fireproof rolling shutter. The movable shell 20 is slidably connected to the fixed shell 10. One end of the heat-sensitive connector 30 is connected to the fixed shell 10, and the other end is connected to the movable shell 20. The elastic element 40 is arranged between the fixed shell 10 and the movable shell 20 and is in a compressed state. One end of the pull wire 50 is used to connect to the brake release rod 60 of the rolling shutter machine, and the other end passes through the fixed shell 10 and is connected to the movable shell 20. The heat-sensitive connector 30 is used to break when the temperature exceeds a threshold value. The movable shell 20 moves away from the fixed shell 10 under the top thrust released by the elastic element 40, so that the pull wire 50 pulls the brake release rod 60.

[0024] It should be noted that the fixed shell 10 and the movable shell 20 may adopt a pull-out sliding fitting structure, a cavity being formed inside the two, and the elastic element 40 may be a spring compressed and installed in the cavity; the thermosensitive connector 30 may specifically be a fusible alloy material, and its melting point is preferably around seventy degrees. When the external ambient temperature reaches the threshold, that is, the melting point range of the material of the thermosensitive connector 30, the thermosensitive connector 30 immediately breaks, and the elastic element 40 in the compressed state releases elastic potential energy to push the movable shell 20 away from the fixed shell 10, thereby utilizing the movement of the movable shell 20 to pull the pull wire 50 and then pull the brake release rod 60 to release the brake of the rolling door machine. Considering the temperature response sensitivity, the thermosensitive connector 30 preferably adopts a method of connecting the fixed shell 10 and the movable shell 20 on the outside, thereby ensuring that the thermosensitive connector 30 is always in direct contact with the ambient air.

[0025] Compared with the prior art, the temperature-controlled release device provided in this embodiment is characterized in that the fixed shell 10 is installed on an exposed part of a wall or ceiling around the fireproof rolling shutter that is convenient for manual operation. In the initial state, the fixed shell 10 and the movable shell 20 are connected by the heat-sensitive connector 30, so that the elastic element 40 is in a compressed state. When a fire occurs, the ambient temperature rises, causing the temperature of the heat-sensitive connector 30 to break when it exceeds a threshold value. The movable shell 20 can be moved away from the fixed shell 10 under the action of the elastic top thrust released by the elastic element 40, so that the pull wire 50 connected to the movable shell 20 pulls the brake release rod 60 of the rolling door machine to release the brake of the rolling door machine, so that the fireproof rolling shutter automatically closes under its own gravity. Not only can the fireproof rolling shutter be automatically closed without manual operation in the event of a power outage, thereby reducing the threat to the personal safety of the operator posed by the fire, but in particular, the sensitivity of the heat-sensitive connector 30 to the ambient temperature can be utilized to improve the timeliness of the response of the fireproof rolling shutter to automatically close based on its own gravity, thereby preventing the spread of fire.

[0026] As a specific embodiment of the above-mentioned heat-sensitive connecting member 30, please refer to Figure 3 The thermal connector 30 includes two thermally conductive connecting pieces 31, which are respectively connected to the fixed shell 10 and the movable shell 20, and the two thermally conductive connecting pieces 31 are fixed by welding with fusible alloy solder 32, which is used to melt when the temperature exceeds a threshold.

[0027] The use of the thermally conductive connecting piece 31 can increase the contact area with the ambient air, so that it can be heated in time when the ambient air temperature rises in the event of a fire. When the temperature of the thermally conductive connecting piece 31 rises to the threshold value of 70 degrees Celsius or above, the fusible alloy solder 32 can be melted, causing the two thermally conductive connecting pieces 31 to lose connection and separate. The structure is simple and the temperature sensitivity is high, which is conducive to improving the timeliness of fire response.

[0028] Optional, such as Figure 3 As shown, the thermally conductive connecting piece 31 is a copper piece, and the fusible alloy solder 32 is a tin-bismuth alloy solder; wherein, solder holes 313 for filling the fusible alloy solder 32 are staggeredly distributed on the two thermally conductive connecting pieces 31 .

[0029] The thermal conductivity of copper is 401W / Mk, which is superior to other materials in thermal conductivity. Fusible alloy is a low-melting-point alloy with a melting point below 232°C. It is mainly made of elements such as tin, bismuth, lead, and cadmium. It has a variety of melting points depending on the ratio of various elemental components, including 47°C, 70°C, 92°C, 120°C, etc. Here, fusible alloy solder 32 with a melting point of 70°C is preferably used. On this basis, the fusible alloy solder 32 is filled in the welding hole 313 set on the thermal connecting piece 31 for welding, which can ensure the connection reliability of the two thermal connecting pieces 31 under normal temperature environment.

[0030] For details, see Figures 1 to 3In this embodiment, a first hook 11 is provided on the outer surface of the fixed shell 10, and a second hook 21 is provided on the outer surface of the movable shell 20. One of the heat-conducting connecting pieces 31 has a first connection hole 311 for connecting with the first hook 11, and the other heat-conducting connecting piece 31 has a second connection hole 312 for connecting with the second hook 21. Providing the first hook 11 and the second hook 21 to connect with the connection holes of the two heat-conducting connecting pieces 31 facilitates the installation of the heat-sensitive connecting piece 30 and allows the two heat-conducting connecting pieces 31 to be suspended outside the fixed shell 10 and the movable shell 20. This ensures that the heat-conducting connecting pieces 31 are fully in contact with the ambient air, thereby improving their heat absorption efficiency. This ensures that ambient heat is promptly transferred to the heat-conducting connecting pieces 31 in the event of a fire. This heat is then transferred to the fusible alloy solder 32 through the heat-conducting connecting pieces 31, causing the fusible alloy solder 32 to melt promptly when the temperature exceeds a threshold. This improves temperature sensing sensitivity and ensures a timely fracture response of the heat-sensitive connecting piece 30 in the event of a fire.

[0031] As another specific embodiment of the above-mentioned heat-sensitive connecting member 30, please refer to Figure 4 The thermal connector 30 includes a sealed glass tube 301 and a thermal expansion filler 302 filled within the sealed glass tube 301. One end of the sealed glass tube 301 is connected to the fixed housing 10, and the other end is connected to the movable housing 20. The thermal expansion filler 302 is designed to rupture the sealed glass tube 301 when the temperature exceeds a threshold. The thermal expansion filler 302 can be solid or liquid. To enhance temperature sensitivity, in this embodiment, a metal thermal conductor 303 is provided at at least one end of the sealed glass tube 301. The thermal expansion filler 302 is mercury. One or both ends of the sealed glass tube 301 are sealed by a metal heat-conducting head 303. This allows a thermal expansion filler 302, such as mercury, filled in the sealed glass tube 301 to directly contact the metal heat-conducting head 303. The superior heat absorption of the metal heat-conducting head 303 over glass allows the mercury temperature to change in time with the metal heat-conducting head 303 and, in turn, with the ambient temperature. When a fire occurs, the mercury temperature rises and expands, thereby bursting the sealed glass tube 301 and releasing its traction connection with the fixed shell 10 and the movable shell 20. Consequently, the movable shell 20, under the jacking force of the elastic element 40, moves away from the fixed shell 10, pulling the pull wire 50.

[0032] It should be noted that in this embodiment, liquid mercury is used as the thermal expansion filler 302. At room temperature, the mercury is not filled in the sealed glass tube 301, but there are cavities in the sealed glass tube 301. Figure 4 As shown, when the temperature rises, the mercury expands, causing the cavitation to gradually decrease. When the temperature approaches 70 degrees Celsius, the cavitation completely disappears. At this time, if the mercury continues to expand, it will burst the sealed glass tube 301.

[0033] For some possible implementations, see Figure 1 and Figure 2 The pull wire 50 is a core-pulling pull wire. One end of the wire sleeve 51 of the core-pulling pull wire is connected to the bracket 70 installed on the roller shutter machine, and the other end is connected to the fixed shell 10. One end of the wire core 52 of the core-pulling pull wire is connected to the brake release rod 60, and the other end is connected to the movable shell 20. In this core-pulling pull wire, a steel wire bundle is used as the wire core 52, and a plastic wire sleeve 51 is set on the wire core 52. The two ends of the wire core 52 pass through the wire sleeve 51 and are respectively connected to the movable shell 20 and the brake release rod 60, while the two ends of the wire sleeve 51 are respectively connected to the fixed shell 10 and the bracket 70 installed on the roller shutter machine housing. This allows the pull wire 50 to be bent and extended at will, making installation and arrangement convenient.

[0034] It should be noted that if Figure 1 As shown, the movable shell 20 is provided with a pull rod 22, and one end of the wire core 52 is connected to the pull rod 22. Specifically, the pull rod 22 is slidably connected to the movable shell 20, and an adjusting nut 221 is screwed on the pull rod 22, and the adjusting nut 221 abuts against the outer wall of the movable shell 20 away from the fixed shell 10. The purpose of setting the pull rod 22 and the wire core 52 connection here is to facilitate the operation of the pull rod 22 to achieve the traction of the wire core 52, thereby enabling the operation of the brake release lever 60 without breaking the thermal connector 30. In this way, the fixed shell 10 can be installed at a height that is convenient for operation, specifically a position of about 1.4 meters from the ground, thereby avoiding the need to climb up to move the brake release lever 60 on the rolling door machine during manual operation, and improving the convenience of manually releasing the automatic rolling shutter.

[0035] Furthermore, in order to facilitate manual operation of the pull rod 22, as shown Figure 1 As shown, a manual pull ring 222 is provided at the end of the pull rod 22 passing through the movable shell 20 .

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Temperature controlled release device, characterized in that, include: Fixed shell, used for installation on the exposed part of the wall or ceiling around the fire shutter; a movable shell, slidably connected to the fixed shell; a heat-sensitive connector, one end of which is connected to the fixed shell, and the other end of which is connected to the movable shell; an elastic element, disposed between the fixed shell and the movable shell and in a compressed state; a pull wire, one end of which is used to connect to the brake release lever of the rolling door machine, and the other end of which passes through the fixed shell and is connected to the movable shell; The heat-sensitive connector is configured to break when the temperature exceeds a threshold value, and the movable shell moves away from the fixed shell under the pushing force released by the elastic element so that the pull wire pulls the brake release rod.

2. The temperature-controlled release device according to claim 1, characterized in that: The heat-sensitive connecting piece includes two heat-conducting connecting pieces, which are respectively connected to the fixed shell and the movable shell, and the two heat-conducting connecting pieces are fixed by welding with fusible alloy solder, and the fusible alloy solder is used to melt when the temperature exceeds a threshold.

3. The temperature-controlled release device according to claim 2, characterized in that: The thermally conductive connecting piece is a copper piece, and the fusible alloy solder is a tin-bismuth alloy solder; wherein solder holes for filling the fusible alloy solder are staggeredly distributed on the two thermally conductive connecting pieces.

4. The temperature-controlled release device according to claim 2, wherein: A first hook is provided on the outer surface of the fixed shell, and a second hook is provided on the outer surface of the movable shell. One of the heat-conducting connecting pieces is provided with a first connecting hole connected to the first hook, and the other heat-conducting connecting piece is provided with a second connecting hole connected to the second hook.

5. The temperature-controlled release device according to claim 1, wherein: The heat-sensitive connecting piece includes a sealed glass tube and a heat-expanding filler filled in the sealed glass tube. One end of the sealed glass tube is connected to the fixed shell, and the other end is connected to the movable shell. The heat-expanding filler is used to burst the sealed glass tube when the temperature exceeds a threshold.

6. The temperature-controlled release device according to claim 5, characterized in that: At least one end of the sealed glass tube is provided with a metal heat conducting head, and the thermal expansion filler is mercury.

7. The temperature-controlled release device according to any one of claims 1 to 6, characterized in that: The pull wire is a core-pulling pull wire, one end of the wire sleeve of the core-pulling pull wire is connected to the bracket installed on the rolling door machine, and the other end is connected to the fixed shell. One end of the wire core of the core-pulling pull wire is connected to the brake release rod, and the other end is connected to the movable shell.

8. The temperature-controlled release device according to claim 7, characterized in that: A pull rod is passed through the movable shell, and one end of the wire core is connected to the pull rod.

9. The temperature-controlled release device according to claim 8, characterized in that: The pull rod is slidably connected to the movable shell, and an adjusting nut is screwed on the pull rod. The adjusting nut abuts against an outer wall of the movable shell facing away from the fixed shell.

10. The temperature-controlled release device according to claim 9, characterized in that: The end of the pull rod passing through the movable shell is provided with a manual pull ring.

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