Self-protection device for fire-fighting smoke alarm
By designing a self-protection device for fire smoke alarms, and using the cooperation of the protective inner shell, flame retardant protective shell and PLC controller, the problem of easy destruction of traditional smoke alarms in fires is solved, and the continuous alarm function and external protection effect of the smoke alarm are realized.
Patent Information
- Application Number
- CN202420878953.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-25
AI Technical Summary
Traditional smoke alarms are easily destroyed in fires, resulting in the loss of alarm function in advance and are easily directly exposed to irrelevant personnel, which poses the potential for interference and damage.
A self-protection device for fire smoke alarm is designed, including a protective inner shell, a flame-retardant protective shell and a PLC controller. Through the cooperation of the electromagnet and a spring, the flame-retardant protective shell is quickly mounted after the smoke alarm is triggered, wrapping the smoke alarm to protect it from damage from thick smoke and fire.
It effectively prevents the smoke alarm from failing under thick smoke and fire, ensures that it can continuously issue alarms, and plays an external protective role in normal times, so as to prevent unrelated personnel from getting in contact with the smoke alarm.
Smart Images
Figure CN222545788U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire smoke alarms, in particular to a self-protection device for fire smoke alarms. Background Art
[0002] Traditional smoke alarms are directly installed indoors. For rooms with low ceilings, unauthorized personnel can directly touch the smoke alarms, causing the smoke alarms to be interfered with and damaged. In addition, traditional alarms are at the forefront of fires. When thick smoke gathers and the fire intensifies, it will cause destructive interference to the smoke alarms, causing the smoke alarms to lose their alarm function prematurely. In response to this, the applicant proposes a self-protection device for fire smoke alarms. Utility Model Content
[0003] The technical problem to be solved by the utility model is: in order to overcome the above problems, a self-protection device for a fire smoke alarm is provided, which solves the above problems.
[0004] The utility model solves the technical problem by adopting the following technical solutions:
[0005] A self-protection device for a fire smoke alarm comprises a protective inner shell with fixing bolts, the protective inner shell being fixed by the fixing bolts, and the smoke alarm being fixedly installed inside the protective inner shell, and two pull rods being slidably arranged up and down on the protective inner shell, a spring being sleeved on the outside of the pull rods for lifting the pull rods upward, and a flame-retardant protective outer shell being fixedly arranged at the lower end of the pull rods for covering the outside of the protective inner shell, and an electromagnet block being magnetically attracted to the inner wall of the flame-retardant protective outer shell being fixedly arranged on the outer wall of the protective inner shell for locking the positions of the flame-retardant protective outer shell and the protective inner shell.
[0006] Preferably, a PLC controller connected to the electrical signal of the smoke alarm is fixedly provided on the top of the protective inner shell, and the PLC controller is used to control the power-on state of the electromagnet. When the smoke alarm is triggered, the PLC controller is synchronously triggered to cut off the power to the electromagnet, so that the flame-retardant protective outer shell and the protective inner shell are separated from the magnetic attraction. In this way, under the action of the spring, the flame-retardant protective outer shell is quickly bounced up into the protective position, effectively avoiding the damage to the smoke alarm caused by thick smoke and fire, so that the smoke alarm can continue to sound an alarm.
[0007] Preferably, a plurality of through smoke holes are provided at annular intervals on the side wall of the protective inner shell. Since thick smoke will first gather at the top of the room and spread, the smoke holes opened on the side can be used to enable the smoke to be detected by the smoke alarm in the first place while improving safety.
[0008] Preferably, when the flame-retardant protective outer shell enters the protective position, the upper end surface of the flame-retardant protective outer shell abuts against the lower end surface of the protective inner shell.
[0009] The advantages and positive effects of the utility model are as follows: when thick smoke spreads on the roof and enters from the smoke hole, the smoke alarm senses it and triggers the PLC controller to cut off the power to the electromagnet. After a moment, the spring pushes the pull rod and the flame-retardant protective shell upward, so that the smoke alarm is completely wrapped by the flame-retardant protective shell and the protective inner shell. In this way, the buzzer of the smoke alarm can continue to sound the alarm in a relatively stable state, avoiding the alarm from failing due to thick smoke and fire. In addition, the surrounding state of the flame-retardant protective shell and the protective inner shell can play an external protection role in normal times to prevent unrelated personnel from directly contacting the smoke alarm. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2 yes Figure 1 Schematic diagram of the structure without the flame retardant protective shell and spring.
[0013] The symbols in the accompanying drawings are described as follows: 10, protective inner shell; 11, smoke hole; 12, smoke alarm; 13, fixing bolt; 14, pulling rod; 15, PLC controller; 16, spring; 17, flame retardant protective outer shell. DETAILED DESCRIPTION
[0014] Now, the utility model is further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model. The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings:
[0015] like Figure 1-2As shown, the utility model describes a self-protection device for a fire smoke alarm, comprising a protective inner shell 10 with fixing bolts 13, the protective inner shell 10 is fixed by the fixing bolts 13, and the smoke alarm 12 is fixedly installed inside the protective inner shell 10, and two pull rods 14 are also slidably provided on the protective inner shell 10, a spring 16 is sleeved on the outside of the pull rod 14 for lifting the pull rod 14 upward, and a flame-retardant protective outer shell 17 is fixedly provided at the lower end of the pull rod 14 for covering the outside of the protective inner shell 10, and an electromagnet block that is magnetically attracted to the inner wall of the flame-retardant protective outer shell 17 is fixedly provided on the outer wall of the protective inner shell 10 for locking the positions of the flame-retardant protective outer shell 17 and the protective inner shell 10.
[0016] Preferably, a PLC controller 15 connected to the smoke alarm 12 by electrical signals is fixedly provided on the top of the protective inner shell 10, and the PLC controller 15 is used to control the power-on state of the electromagnet. When the smoke alarm 12 is triggered, the PLC controller 15 is synchronously triggered to cut off the power to the electromagnet, so that the flame-retardant protective outer shell 17 is separated from the magnetic attraction of the protective inner shell 10. In this way, under the action of the spring 16, the flame-retardant protective outer shell 17 is quickly rebounded into the protective position, effectively avoiding the damage of the smoke alarm 12 by thick smoke and fire, so that the smoke alarm 12 can continue to sound an alarm.
[0017] Preferably, a plurality of through smoke holes 11 are provided at annular intervals on the side wall of the protective inner shell 10. Since thick smoke will first gather at the top of the room and spread, the smoke holes 11 opened on the side can be used to allow the smoke to be detected by the smoke alarm 12 in the first place while improving safety.
[0018] Preferably, when the flame-retardant protective outer shell 17 enters the protective position, the upper end surface of the flame-retardant protective outer shell 17 abuts against the lower end surface of the protective inner shell 10 .
[0019] In specific implementation, when thick smoke spreads on the roof and enters from the smoke hole 11, the smoke alarm 12 senses it and triggers the PLC controller 15 to cut off the power to the electromagnet. After a moment, the spring 16 pushes the pull rod 14 and the flame retardant protective shell 17 upward, so that the smoke alarm 12 is completely wrapped by the flame retardant protective shell 17 and the protective inner shell 10. In this way, the buzzer of the smoke alarm 12 can continue to sound the alarm in a relatively stable state, avoiding the alarm from failing due to thick smoke and fire. In addition, the surrounding state of the flame retardant protective shell 17 and the protective inner shell 10 can play an external protection role in normal times to prevent unrelated personnel from directly contacting the smoke alarm 12.
[0020] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.
Claims
1. A self-protection device for a fire smoke alarm, characterized in that: The invention comprises a protective inner shell (10) with a fixing bolt (13), wherein the protective inner shell (10) is fixed by the fixing bolt (13), and a smoke alarm (12) is fixedly installed inside the protective inner shell (10); in addition, two pull rods (14) are slidably arranged up and down on the protective inner shell (10); a spring (16) is sleeved outside the pull rod (14) for lifting the pull rod (14) upward, and a flame-retardant protective outer shell (17) is fixedly arranged at the lower end of the pull rod (14) for covering the outside of the protective inner shell (10); an electromagnet block which is magnetically attracted to the inner wall of the flame-retardant protective outer shell (17) is fixedly arranged on the outer wall of the protective inner shell (10) for locking the positions of the flame-retardant protective outer shell (17) and the protective inner shell (10).
2. A self-protection device for a fire smoke alarm according to claim 1, characterized in that: A PLC controller (15) connected to the smoke alarm (12) by electrical signals is fixedly provided on the top of the protective inner shell (10). The PLC controller (15) is used to control the power-on state of the electromagnet. When the smoke alarm (12) is triggered, the PLC controller (15) is synchronously triggered to thereby cut off the power to the electromagnet, so that the flame-retardant protective outer shell (17) and the protective inner shell (10) are separated from the magnetic attraction. Thus, under the action of the spring (16), the flame-retardant protective outer shell (17) is quickly ejected into a protective position, effectively preventing the smoke alarm (12) from being damaged by thick smoke and fire, so that the smoke alarm (12) can continue to sound an alarm.
3. A self-protection device for a fire smoke alarm according to claim 2, characterized in that: A plurality of smoke holes (11) are provided at annular intervals on the side wall of the protective inner shell (10). Since thick smoke will first gather at the top of the room and spread, the smoke holes (11) provided on the side allow the smoke to be detected by the smoke alarm (12) at the first opportunity while improving safety.
4. A self-protection device for a fire smoke alarm according to claim 3, characterized in that: When the flame-retardant protective outer shell (17) enters the protective position, the upper end surface of the flame-retardant protective outer shell (17) abuts against the lower end surface of the protective inner shell (10).