Filtering type fire alarm device

Abstract

The utility model discloses a filtering type fire alarm device, and relates to the field of smoke alarms. The alarm comprises an alarm main body, two sides of the top of the alarm main body are rotatably connected with a protective housing through a rotating shaft, the top of the protective housing is provided with a plurality of air holes, and one side of the alarm main body and one side of the protective housing are connected with a hot melting sheet. When flammable and explosive liquid such as alcohol and floral water burns, the temperature in a room rises to trigger a fusing mechanism of the hot melting piece, after the hot melting piece is fused, the protective shell loses support and turns outwards, the infrared signal detector can sense the change, meanwhile, the infrared signal detector rapidly transmits a signal to a control center, and the control center controls the control center to work. And the control center immediately activates the buzzer to give an alarm, and particularly can give an alarm more quickly and accurately when a fire disaster with less smoke is caused, so that the life and property safety of people is protected.

Description

Technical Field

[0001] The utility model relates to the field of smoke alarms, in particular to a filtering fire alarm device. Background Art

[0002] Smoke alarm is an important fire safety equipment. By adopting photoelectric sensing, ion sensing and other technologies, it can quickly detect smoke in the early stage of fire and send out sound and light alarms to remind people to escape in time, thereby effectively preventing the spread of fire and protecting life and property. This device has the characteristics of high sensitivity and low false alarm rate, and can be connected to the smart home system for remote monitoring. Because it is simple to install, convenient to maintain and complies with fire safety regulations, smoke alarms have been widely used in public places such as homes and offices, becoming an indispensable part of fire safety.

[0003] The main working principle of smoke alarms currently on the market is to monitor smoke in the environment through photoelectric sensing, smoke sensing and other technologies. However, this method of relying on smoke as a detection medium has a significant problem: when smokeless combustion occurs indoors, such as the combustion of flammable and explosive liquids or gases such as alcohol and toilet water, these substances tend to burn relatively fully in the early stages of combustion and produce less smoke. Therefore, traditional smoke alarms may not be able to trigger the alarm in time in this case, causing the fire to easily get out of control, which may in turn cause serious casualties and property losses. This limitation needs to be addressed urgently to improve the effectiveness and safety of smoke alarms. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a filtering fire alarm device to solve the technical problem that the traditional smoke alarm cannot trigger the alarm in time when facing a fire with less smoke.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filtering fire alarm device, comprising an alarm body, both sides of the top of the alarm body are rotatably connected to a protective shell through a rotating shaft, a plurality of air holes are arranged on the top of the protective shell, and a hot melt sheet is connected to one side of the alarm body and the protective shell.

[0006] By adopting the above technical solution, when flammable and explosive liquids such as alcohol and toilet water are burning, the smoke detector may be difficult to detect due to the small amount of smoke in the initial stage. However, at this time, the temperature in the room will increase, causing the thermal fuse to melt after reaching a specific temperature due to its special material. After the thermal fuse melts, the protective shell will flip outward to both sides due to loss of support. At this time, the infrared signal detector detects the change in the state of the protective shell and transmits the signal to the control center, which then activates the buzzer to sound an alarm.

[0007] Furthermore, the material of the thermal fuse is lead-tin alloy, and the melting point ranges from fifty to seventy degrees Celsius, and is specifically used for temperature detection without power supply.

[0008] By adopting the above technical solution, this alloy has a lower melting point range, between fifty and seventy degrees Celsius. This feature enables the thermal fuse to melt quickly in the early stage of a fire when the indoor temperature rises, thereby triggering the alarm mechanism in time.

[0009] Furthermore, a smoke detector is provided inside the alarm body for detecting smoke contained in the air.

[0010] By adopting the above technical solution, the smoke detector can detect the smoke concentration in the air in real time. In the early stage of a fire, smoke is one of the important indicators of the fire condition, so the presence of the smoke detector can quickly capture the initial signs of a fire.

[0011] Furthermore, a buzzer for warning of fire is arranged on the top of the smoke detector, and an infrared signal detector is arranged on one side of the buzzer.

[0012] By adopting the above technical solution, the buzzer can immediately emit a loud alarm when smoke is detected, quickly alerting people to the occurrence of a fire. This instant sound warning is of great significance for timely evacuation of personnel and reducing potential casualties.

[0013] Furthermore, the buzzer and the smoke detector are both electrically connected to an external power source through a control center.

[0014] By adopting the above technical solution, a stable power supply is ensured. This connection method enables the smoke detector to continuously and accurately monitor the smoke in the air, while the buzzer can immediately sound an alarm when needed.

[0015] Furthermore, a mounting shell is provided at the bottom of the alarm body for mounting a fire alarm device.

[0016] By adopting the above technical solution, the mounting housing provides a stable mounting base, so that the fire alarm device can be firmly mounted in an appropriate position, which ensures that the alarm device will not be moved or damaged by external factors such as vibration or wind, thereby maintaining its normal operation and accuracy.

[0017] Furthermore, the two protective shells are in a disc-like assembly structure, and the plurality of air holes are evenly and equidistantly arranged for communication with the outside air.

[0018] By adopting the above technical solution, a stable protection is provided for the fire alarm device. This structure makes the alarm device more stable, reduces the interference of external factors thereto, and ensures the accuracy and reliability of the alarm device.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The utility model uses a thermal fuse. When flammable and explosive liquids such as alcohol and toilet water burn, the smoke detector may find it difficult to detect in time due to the small amount of smoke produced in the initial stage. However, at this time, the increase in temperature in the room will trigger the fusing mechanism of the thermal fuse. After the thermal fuse is melted, the protective shell loses support and turns outward, allowing the infrared signal detector to sense this change. At the same time, the infrared signal detector quickly transmits the signal to the control center, and the control center immediately activates the buzzer to sound an alarm. This dual detection mechanism - the combination of smoke detection and temperature detection, significantly improves the fire alarm device's ability to respond to various fire situations, especially when facing fires that produce less smoke, it can sound the alarm faster and more accurately to protect people's lives and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0024] In the figure: 1. Alarm body; 2. Protective shell; 3. Ventilation hole; 4. Mounting shell; 5. Rotating shaft; 6. Hot melt; 7. Smoke detector; 8. Buzzer; 9. Infrared signal detector. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0028] The following describes an embodiment of the utility model based on its overall structure.

[0029] A filtering fire alarm device, such as Figure 1-Figure 3 As shown, it includes an alarm body 1, and both sides of the top of the alarm body 1 are rotatably connected to a protective shell 2 through a rotating shaft 5. The top of the protective shell 2 is provided with multiple air holes 3. A hot melt piece 6 is connected to the alarm body 1 and one side of the protective shell 2. When flammable and explosive liquids such as alcohol and toilet water burn, the smoke detector 7 may be difficult to detect due to the small amount of smoke in the initial stage. However, at this time, the temperature in the room rises and the hot melt piece 6 will melt after reaching a specific temperature due to its special material. After the hot melt piece 6 melts, the protective shell 2 turns outward to both sides due to the loss of support. At this time, the infrared signal detector 9 detects the change in the state of the protective shell 2 and transmits the signal to the control center. The control center immediately activates the buzzer 8 to sound an alarm. This method, in combination with traditional smoke detection, provides another detection method for the fire alarm device, significantly improves its ability to respond to different fire situations, and more effectively protects people's lives and property.

[0030] See also Figure 1 , Figure 2 , Figure 3 The material of the hot melt piece 6 is a lead-tin alloy with a melting point range of fifty to seventy degrees Celsius. It is specially used for temperature detection without power supply. This alloy has a lower melting point range of fifty to seventy degrees Celsius. This feature enables the hot melt piece 6 to quickly melt when the indoor temperature rises at the beginning of a fire, thereby triggering the alarm mechanism in time. At the same time, since the hot melt piece 6 is dedicated to temperature detection and does not require power supply, this increases the safety and reliability of the alarm device. In a fire, even if the power supply is interrupted, the hot melt piece 6 can still work normally because it does not rely on power supply, ensuring the availability of the alarm device at critical moments, providing important guarantees for timely detection of fire and taking countermeasures.

[0031] See also Figure 1 , Figure 2 , Figure 3, a smoke detector 7 is arranged inside the alarm body 1 for detecting smoke contained in the air. The smoke detector 7 can detect the smoke concentration in the air in real time. In the early stage of a fire, smoke is one of the important indicators of the fire condition. Therefore, the presence of the smoke detector 7 can quickly capture the initial signs of a fire. At the same time, the high sensitivity of the smoke detector 7 ensures that even when less smoke is generated, an alarm can be issued in time to remind people to take emergency measures, which significantly improves the response speed and accuracy of the fire alarm device, and provides strong support for preventing fires and protecting people's lives and property safety. A buzzer 8 is arranged on the top of the smoke detector 7 to warn of the occurrence of a fire, and an infrared signal detector 9 is arranged on one side of the buzzer 8. The buzzer 8 can immediately issue a loud alarm when smoke is detected, and quickly warn people of the occurrence of a fire. This instant sound warning is of great significance for timely evacuation of personnel and reduction of potential casualties. At the same time, the infrared signal detector 9 arranged on one side of the buzzer 8 provides another detection means, which can sense the infrared signal generated by the flame or heat source, and further enhance the accuracy of fire detection. This dual detection mechanism-the combination of smoke detection and infrared signal detection significantly improves the reliability and sensitivity of the fire alarm device, and provides more comprehensive protection for fire warning and response.

[0032] See also Figure 1 , Figure 2 , Figure 3 The buzzer 8 and the smoke detector 7 are both electrically connected to the external power supply through the control center, ensuring a stable power supply. This connection method enables the smoke detector 7 to continuously and accurately monitor the smoke in the air, and the buzzer 8 can immediately sound an alarm when needed. At the same time, electrical connection through the control center also facilitates centralized management and control of the buzzer 8 and the smoke detector 7, which not only improves the overall efficiency and response speed of the fire alarm system, but also enhances the stability and reliability of the system, providing strong support for timely detection of fire and protection of people's lives and property.

[0033] See also Figure 1 , Figure 2 , Figure 3 A mounting shell 4 is provided at the bottom of the alarm body 1 for mounting the fire alarm device. The mounting shell 4 provides a stable mounting base so that the fire alarm device can be securely mounted in a suitable position, which ensures that the alarm device will not be moved or damaged by external factors such as vibration or wind, thereby maintaining its normal operation and accuracy. At the same time, the mounting shell 4 simplifies the installation process of the fire alarm device. Through the specially designed mounting structure, the alarm device can be conveniently and quickly fixed to the wall or ceiling, saving installation time and cost.

[0034] See also Figure 1 , Figure 2, Figure 3 The two protective shells 2 are assembled in a disc-like structure, and a plurality of air holes 3 are evenly arranged at equal distances, which are used to communicate with the outside air, providing a stable protection for the fire alarm device. This structure makes the alarm device more stable, reduces the interference of external factors, and ensures the accuracy and reliability of the alarm device. At the same time, a plurality of air holes 3 are evenly arranged at equal distances, which is conducive to the circulation of air between the inside of the device and the outside air, which not only ensures that the smoke detector 7 can detect the smoke in the air in a timely and accurate manner, but also helps to dissipate heat and prevent the device from overheating and damage. Therefore, the disc-like assembled protective shell 2 and the evenly arranged air holes 3 together improve the performance and stability of the fire alarm device.

[0035] The implementation principle of the utility model is: when flammable and explosive liquids such as alcohol and toilet water are burning, because such substances produce less smoke in the initial stage of combustion, it is difficult for the smoke detector 7 to detect the generation of smoke. At this time, the temperature in the house is high due to the burning. Due to the particularity of the material of the hot melt sheet 6, when the temperature of the outer side of the hot melt sheet 6 reaches the melting range of the hot melt sheet 6, the hot melt sheet 6 will melt. When the hot melt sheet 6 breaks, the protective shell 2 turns outward to both sides due to the loss of resistance from the hot melt sheet 6. At this time, the infrared signal detector 9 cannot detect the existence of the protective shell 2, and the infrared signal detector 9 transmits the signal to the control center, and the control center controls the buzzer 8 to sound an alarm, thereby cooperating with the traditional smoke detector 7 to detect smoke, providing another detection method, and enhancing the fire alarm device's ability to respond to different fire situations.

[0036] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0037] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A filtering fire alarm device, characterized in that: The invention comprises an alarm body (1), both sides of the top of the alarm body (1) are rotatably connected to a protective shell (2) via a rotating shaft (5), a plurality of air holes (3) are arranged on the top of the protective shell (2), a hot melt sheet (6) is connected between the alarm body (1) and one side of the protective shell (2), a smoke detector (7) is arranged inside the alarm body (1) for detecting smoke contained in the air, a buzzer (8) for warning of fire is arranged on the top of the smoke detector (7), and an infrared signal detector (9) is arranged on one side of the buzzer (8).

2. The filtering fire alarm device according to claim 1, characterized in that: The material of the hot melt sheet (6) is a lead-tin alloy with a melting point ranging from fifty to seventy degrees Celsius, and is specifically used for temperature detection without power supply.

3. The filtering fire alarm device according to claim 1, characterized in that: The buzzer (8) and the smoke detector (7) are both electrically connected to an external power source via a control center.

4. The filtering fire alarm device according to claim 1, characterized in that: The bottom of the alarm body (1) is provided with a mounting shell (4) for mounting a fire alarm device.

5. The filtering fire alarm device according to claim 1, characterized in that: The two protective shells (2) are in a disc-type assembly structure, and the plurality of air holes (3) are evenly arranged at equal distances for communication with the outside air.

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