Combined fire damper clutch

Abstract

This invention discloses a combined fire damper clutch device, comprising a first actuator and a second actuator. Under normal operating conditions, a traction motor drives the first actuator to drive the fire damper shaft, controlling the opening and closing of the fire damper. In case of fire, the second actuator drives the fire damper shaft to rotate, achieving rapid closure of the fire damper. If the second actuator malfunctions and cannot operate, the first actuator can still close the fire damper, ensuring the operational stability of the fire damper system and providing dual protection.

Description

Technical Field

[0001] This invention belongs to the field of fire valve control technology, specifically relating to a combined fire valve clutch device. Background Technology

[0002] Fire dampers are used in the supply and exhaust ducts of ventilation and air conditioning systems. They are normally open, but need to be quickly closed in the event of a fire to prevent the spread of smoke and flames through the ducts. This necessitates ensuring the valves can close rapidly during a fire. Existing technologies typically use single-function clutches (actuators) for fire dampers, with the same control speed for both normal operation and fire conditions. Furthermore, existing technologies only provide control systems for rapid valve closure; if these systems malfunction, they may fail to close in a fire, leading to continued fire spread and failing to provide double protection for the building's ventilation system. Based on these problems, this invention aims to develop a fire damper clutch that enables dual-function opening and closing control. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a combined fire damper clutch device, which enables dual-opening and closing control of fire dampers in ventilation systems, thereby improving the practical safety of the equipment.

[0004] Technical Solution: The present invention provides a combined fire damper clutch device, comprising a first actuator and a second actuator. The first actuator includes a traction motor, a traction rod, a traction rod connector, a first variable diameter rotor, a second variable diameter rotor, a fire damper shaft connecting rod, and a fire damper shaft crank. The traction motor is connected to one end of the traction rod, and the other end of the traction rod is hinged to one end of the traction rod connector. The other end of the traction rod connector is hinged to the second variable diameter rotor. The second variable diameter rotor has a sliding groove, and the first variable diameter rotor has a slider that matches the sliding groove. The first variable diameter rotor and the second variable diameter rotor are connected through the cooperation of the slider and the sliding groove. The upper part of the first variable diameter rotor is hinged to one end of the fire damper shaft connecting rod, and the other end of the fire damper shaft connecting rod is hinged to the fire damper shaft crank. The fire damper shaft crank is connected to the fire damper shaft. The second actuator includes a fuse, a locking element, a power storage gearbox, a gearbox output shaft gear, and a variable diameter gear. The fuse is fixed to the outside of the power storage gearbox. The locking element is connected to the power storage assembly inside the power storage gearbox. After the power storage assembly accumulates torque, the fuse restricts the position of the locking element to achieve a balanced state. The gearbox output shaft gear is fixed to the outside of the power storage gearbox. The gearbox output shaft gear meshes with the variable diameter gear, and the center of the variable diameter gear is hinged to the power storage gearbox wall along the same axis as the end of the tie rod connector and the second variable diameter rotating member. The lower part of the first variable diameter rotating member is hinged to the outside of the power storage gearbox wall. Under normal operating conditions, the traction motor drives the first actuator to drive the fire damper shaft and control the opening and closing of the fire damper. In the event of a fire, the fuse melts at high temperature, releasing the locking element. The locking element instantly releases the energy storage component, driving the gearbox output shaft gear to rotate. The gearbox output shaft gear drives the variable diameter large gear to rotate. The variable diameter large gear and the tie rod connector are linked through a set of self-locking components, thereby causing the fire damper shaft to rotate and achieving rapid closure of the fire damper.

[0005] Furthermore, as a preferred embodiment, the self-locking assembly includes a striking block fixed on the variable diameter gear, a pin and a spring tongue fixed on the upper end of the second variable diameter rotating part. The rapidly rotating variable diameter gear drives the striking block to run, and the striking block hits the spring tongue, causing the spring tongue to hit the pin and bounce up the pin. During the fall-back process, the bounced pin locks the locking notch reserved at the top of the tie rod connector, thereby locking the relative positions of the variable diameter gear and the tie rod connector. This causes the tie rod connector to rotate with the rotation of the variable diameter gear, thereby driving the fire damper shaft connecting rod to drive the fire damper shaft to run.

[0006] Furthermore, as a preferred embodiment, one end of the spring is hinged to the second variable diameter rotating component, and the whole is triangular in structure. The end near the pin has a protrusion, and the position of the protrusion is below the pin, so as to ensure that the spring can hit and lift the pin during operation. One end of the pin is hinged to the top of the second variable diameter rotating part, and the other end is a fixed pin for engaging with the locking notch.

[0007] Furthermore, as a preferred embodiment, the power storage gearbox includes a housing, a torsion spring, and a set of transmission gears. After the torsion spring generates torque through the rotation of the central shaft, the power storage gearbox achieves force balance and is in a static state through the cooperation of the locking element and the fuse.

[0008] Beneficial effects: The present invention provides dual protection for the fire damper actuator in the ventilation system by designing a first actuator and a second actuator. Under normal operating conditions, the first actuator opens and closes the fire damper in a relatively gentle manner, minimizing noise, dust, and other pollution problems. In the event of a fire, the first and second actuators can work together to quickly close the fire damper. If the second actuator malfunctions and cannot operate, the first actuator can still close the fire damper, ensuring the operational stability of the fire damper system and providing dual protection. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the device under normal operating conditions. Figure 2 This is a schematic diagram of the overall structure of the device of the present invention under fire operation conditions; Figure 3 This is a schematic diagram illustrating the connection effect between the first variable diameter rotary component and the second variable diameter rotary component in the device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the energy storage gearbox in the device of the present invention; Figure 5 This is a schematic diagram of the structure of the tie rod connector in the device of the present invention; Figure 6 This is a schematic diagram of the structure of the second variable diameter rotating component in the device of the present invention; The components are as follows: 1. Traction motor; 2. Traction rod; 3. Traction rod connector; 31. Locking notch; 4. First diameter changing screw; 41. Slider; 5. Second diameter changing screw; 51. Slide groove; 52. Pin; 53. Spring; 54. Pin; 6. Fire damper shaft connecting rod; 7. Fire damper shaft crank; 8. Fire damper shaft; 9. Fuse; 10. Locking component; 11. Power storage gearbox; 111. Torsion spring; 112. Gear set; 113. Central shaft; 12. Gearbox output shaft gear; 13. Large diameter changing gear; 14. Fuse; 15. Impact block. Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0012] Example 1: A combined fire damper clutch device includes a first actuator and a second actuator. The first actuator includes a traction motor 1, a traction rod 2, a traction rod connector 3, a first variable diameter rotor 4, a second variable diameter rotor 5, a fire damper shaft connecting rod 6, and a fire damper shaft crank 7. The traction motor 1 is connected to one end of the traction rod 2, and the other end of the traction rod 2 is hinged to one end of the traction rod connector 3. The other end of the traction rod connector 3 is hinged to the second variable diameter rotor 5. The second variable diameter rotor 5 is provided with a sliding groove 51, and the first variable diameter rotor 4 is provided with a slider 41 that matches the sliding groove 51. The first variable diameter rotor 4 and the second variable diameter rotor 5 are connected through the cooperation of the slider 41 and the sliding groove 51. The upper part of the first variable diameter rotor 4 is hinged to one end of the fire damper shaft connecting rod 6, and the other end of the fire damper shaft connecting rod 6 is hinged to the fire damper shaft crank 7. The fire damper shaft crank 7 is connected to the fire damper shaft 8. The second actuator includes a fuse 9, a locking element 10, a power storage gearbox 11, a gearbox output shaft gear 12, and a variable diameter gear 13. The fuse 14 is fixed to the outside of the power storage gearbox 11. The locking element 10 is connected to the power storage assembly inside the power storage gearbox 11. After the power storage assembly accumulates torque, the position of the locking element 10 is restricted by the fuse 9 to achieve a balanced state. The gearbox output shaft gear 12 is fixed to the outside of the power storage gearbox 11. The gearbox output shaft gear 12 and the variable diameter gear 13 mesh, and the center of the variable diameter gear 13 is hinged to the wall of the power storage gearbox 11 along the same axis as the end of the tie rod connector 3 and the second variable diameter rotating member 5. The lower part of the first variable diameter rotating member 4 is hinged to the outside of the power storage gearbox wall 11. The variable diameter gear and the connecting rod are linked by a self-locking assembly. The self-locking assembly includes a strike block 15 fixed on the variable diameter gear, a pin 52 and a spring tongue 53 fixed on the upper end of the second variable diameter rotating part 5. The rapidly rotating variable diameter gear 13 drives the strike block 15 to run. The strike block 15 hits the spring tongue 53, causing the spring tongue 53 to hit the pin 52 upward and bounce the pin 52. During the fall, the bounced pin 52 jams the locking notch 31 reserved at the top of the connecting rod 3, locking the relative positions of the variable diameter gear 13 and the connecting rod 3. This causes the connecting rod 3 to run with the rotation of the variable diameter gear 13, thereby driving the fire damper rotating shaft connecting rod 6 to drive the fire damper rotating shaft 8.

[0013] One end of the spring tongue 53 is hinged to the second variable diameter rotating part 5. The whole is triangular in structure. The end near the pin 52 has a protrusion, and the position of the protrusion is below the pin 52, so as to ensure that the spring tongue can hit and lift the pin 52 during operation. One end of the pin 52 is hinged to the top of the second variable diameter screw 5, and the other end is fixed to the pin 54 for engaging with the locking notch 31.

[0014] The power storage gearbox 11 includes a housing, a torsion spring 111, and a set of transmission gears 112. After the torsion spring 111 generates torque by rotating through the central shaft 113, it achieves force balance and is in a static state through the cooperation of the locking member 10 and the fuse 9.

[0015] Under normal operating conditions, the traction motor 1 drives the first actuator to drive the fire damper shaft and control the opening and closing of the fire damper. In the event of a fire, the fuse 9 melts at high temperature, releasing the locking element 10. The locking element 10 instantly releases the power storage component, driving the gearbox output shaft gear 12 to rotate. The gearbox output shaft gear 12 drives the variable diameter large gear 13 to rotate. The variable diameter large gear 13 and the tie rod connector 3 are linked through a self-locking component, thereby causing the fire damper shaft to rotate and achieving rapid closure of the fire damper.

[0016] This invention provides dual protection for the fire damper actuator in the ventilation system by designing a first actuator and a second actuator. Under normal operating conditions, the first actuator opens and closes the fire damper in a relatively gentle manner, minimizing noise and dust pollution. In the event of a fire, the first and second actuators can work together to quickly close the fire damper. If the second actuator malfunctions and cannot operate, the first actuator can still close the fire damper, ensuring the operational stability of the fire damper system and providing dual protection.

[0017] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A combined fire damper clutch device, characterized in that: The device includes a first actuator and a second actuator. The first actuator includes a traction motor, a traction rod, a traction rod connector, a first variable diameter rotating component, a second variable diameter rotating component, a fire damper shaft connecting rod, and a fire damper shaft crank. The traction motor is connected to one end of the traction rod, and the other end of the traction rod is hinged to one end of the traction rod connector. The other end of the traction rod connector is hinged to the second variable diameter rotating component. The second variable diameter rotating component has a sliding groove, and the first variable diameter rotating component has a slider that matches the sliding groove. The first variable diameter rotating component and the second variable diameter rotating component are connected through the cooperation of the slider and the sliding groove. The upper part of the first variable diameter rotating component is hinged to one end of the fire damper shaft connecting rod, and the other end of the fire damper shaft connecting rod is hinged to the fire damper shaft crank. The fire damper shaft crank is connected to the fire damper shaft. The second actuator includes a fuse, a locking element, a power storage gearbox, a gearbox output shaft gear, and a variable diameter gear. The fuse is fixed to the outside of the power storage gearbox, and the locking element is connected to the power storage assembly inside the power storage gearbox. After the power storage assembly accumulates torque, the fuse restricts the position of the locking element to achieve a balanced state. The gearbox output shaft gear is fixed to the outside of the power storage gearbox. The gearbox output shaft gear meshes with the variable diameter large gear, and the center of the variable diameter large gear is hinged to the power storage gearbox wall along the same axis as the end of the tie rod connector and the second variable diameter rotating component. The lower part of the first variable diameter rotating component is hinged to the outside of the power storage gearbox wall. Under normal operating conditions, the traction motor drives the first actuator to drive the fire damper shaft and control the opening and closing of the fire damper. In the event of a fire, the fuse melts at high temperature, releasing the locking element. The locking element instantly releases the energy storage component, driving the gearbox output shaft gear to rotate. The gearbox output shaft gear drives the variable diameter large gear to rotate. The variable diameter large gear and the tie rod connector are linked through a set of self-locking components, thereby causing the fire damper shaft to rotate and achieving rapid closure of the fire damper.

2. The combined fire damper clutch device according to claim 1, characterized in that: The self-locking assembly includes a stop block fixed on the variable diameter gear, a pin and a spring tongue fixed on the upper end of the second variable diameter rotating part. The rapidly rotating variable diameter gear drives the stop block to run, and the stop block strikes the spring tongue, causing the spring tongue to strike the pin and bounce up. During the fall-back process, the bounced pin pin locks the locking notch reserved at the top of the tie rod connector, locking the relative positions of the variable diameter gear and the tie rod connector. This causes the tie rod connector to rotate with the rotation of the variable diameter gear, thereby driving the fire damper shaft connecting rod to drive the fire damper shaft to run.

3. The combined fire damper clutch device according to claim 2, characterized in that: One end of the spring is hinged to the second variable diameter rotating component, and the whole is triangular in structure. The end near the pin has a protrusion, and the protrusion is positioned below the pin to ensure that the spring can hit and lift the pin during operation. One end of the pin is hinged to the top of the second variable diameter rotating part, and the other end is a fixed pin for engaging with the locking notch.

4. The combined fire damper clutch device according to claim 1, characterized in that: The power storage gearbox includes a housing, a torsion spring, and a set of transmission gears. After the torsion spring generates torque through the rotation of the central shaft, the power storage gearbox achieves force balance and is in a static state through the cooperation of the locking component and the fuse.

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