Indoor fire smoke sensor

Abstract

The invention relates to the technical field of fire detection, in particular to an indoor fire smoke sensor. Comprising a shell, a flow guide pipe, a control device, a driving motor and a front cover, the shell is in a square box shape with an opening in the front end, a skirt edge is arranged on the periphery of the opening of the shell, and the whole shell is made of fireproof and temperature-resistant materials and can be embedded into a wall on the periphery of indoor inflammables. Through holes are formed in the left side wall and the right side wall of the shell; a rack A and a limiting strip A are arranged on the left side wall of the inner cavity of the shell; a plurality of temperature sensors are arranged to trigger the smoke sensor to work, so that electric energy can be effectively saved, and the air draft device is prevented from generating continuous noise; through the arrangement of the driving motor and the gear and rack assembly, the smoke sensor can be collected into a fireproof temperature-resistant structure formed by the shell and the front cover after completing a fire alarm function, and the smoke sensor is effectively protected from being damaged by high temperature of a fire.

Description

Technical Field

[0001] The present invention relates to the technical field of fire detection, in particular to an indoor fire smoke sensor. Background Art

[0002] The main function of a fire alarm device is to detect fires in a timely manner. When implemented, it can improve safety and reduce casualties and property losses. It also helps firefighters quickly locate the location of the fire and speed up rescue response time.

[0003] In order to achieve the effect of fire alarm, it is usually necessary to install a fire alarm sensor. The existing indoor fire alarm sensor uses a smoke alarm and also has an exhaust device installed inside it. The exhaust device is used to avoid the problem of poor air flow causing long detection time. However, the exhaust device consumes electricity and generates noise when running for a long time, affecting user life. In addition, the smoke alarm is exposed to the outside, which means that when a fire occurs indoors, as the temperature rises, the smoke alarm will melt or even be damaged, resulting in economic losses. Summary of the Invention

[0004] Therefore, the present invention is proposed to solve the above problems. The purpose of the present invention is to provide an indoor fire smoke sensor. The fire alarm sensor has fast detection speed and low power consumption. At the same time, it has a protective structure that can protect the fire alarm sensor from operating stably during high temperatures in fires. The present invention achieves the above objects through the following technical solutions:

[0005] An indoor fire smoke sensor comprises: a housing, a guide tube, a control device, a drive motor and a front cover; a rack A and a limit bar A are provided on the left side wall of the inner cavity of the housing; a rack B and a limit bar B are provided on the right side wall of the inner cavity of the housing; the guide tube is provided inside the housing, and is composed of a first guide tube, a second guide tube, a third guide tube and a fourth guide tube connected end to end in sequence; an exhaust hole is provided at the top front end of the fourth guide tube; an opening is provided on the front end surface of the first guide tube, and a fan is provided in the opening; the third guide tube is provided with a plurality of air outlets; and the air outlet is provided with a plurality of air outlets. A flat plate is provided at the lower part of the inner cavity of the guide tube; a smoke sensor is provided inside the flat plate of the inner cavity of the third guide tube; the control device is provided between the first guide tube and the third guide tube; temperature sensors are connected to the left and right sides of the control device through cables, and the temperature sensors are provided around indoor flammable materials; the drive motor is fixedly provided on the top of the control device and below the fourth guide tube, and gears are provided at the two suspended ends of the driving motor's rotating shaft, and the two gears are respectively engaged with rack A and rack B; the front cover is fixedly provided on the front end surface of the fourth guide tube.

[0006] Preferably, the entire shell is made of fireproof and temperature-resistant material, and the entire shell can be embedded in the wall around indoor flammable materials.

[0007] Preferably, the cross-sections of the first flow guiding tube, the second flow guiding tube, the third flow guiding tube and the fourth flow guiding tube are all rectangular.

[0008] Preferably, the control device is provided with a power storage module, a power supply module and a control module.

[0009] Preferably, the front cover is made of fireproof and temperature-resistant material and is provided with a cavity inside.

[0010] Preferably, the shell is in the shape of a square box with an open front end, and a skirt is provided on the outer periphery of the shell opening; and through holes are provided on both left and right side walls of the shell.

[0011] Preferably, the rack A is located above the through hole on the left side wall of the shell; the limit bar A is located below the through hole on the left side wall of the shell; the rack B is located above the through hole on the right side wall of the shell; the limit bar B is located below the through hole on the right side wall of the shell.

[0012] Preferably, the first and third flow guide tubes are vertically arranged front and back, the second flow guide tube is arranged below the first and third flow guide tubes and connects the first and third flow guide tubes; the fourth flow guide tube is arranged above the first and third flow guide tubes, the tail end of the fourth flow guide tube is connected to the top of the third flow guide tube, and the front end of the fourth flow guide tube protrudes from the front end surface of the first flow guide tube.

[0013] Preferably, rollers are provided on both the left and right side walls of the second guide tube. The rollers provided on the left and right side walls of the second guide tube are respectively located below the limit strips A and B and fit with the bottom surfaces of the limit strips A and B.

[0014] Beneficial effects of the present invention:

[0015] 1. The present invention provides multiple temperature sensors to trigger the operation of smoke sensors, which can effectively avoid the problem of needing to install fire alarm sensors in order to achieve the fire alarm effect. However, existing indoor fire alarm sensors use smoke alarms and also have exhaust devices installed inside them. The exhaust devices consume electricity and generate noise when running for a long time, which affects users' lives.

[0016] 2. The drive motor and gear arrangement of the present invention and the rack assembly can retract the smoke sensor into the fireproof and heat-resistant structure formed by the housing and the front cover after the smoke sensor completes the fire alarm function, effectively protecting the fire alarm sensor from stably operating at high temperatures during a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the present invention.

[0018] Figure 2 It is a schematic diagram of the shell structure of the present invention.

[0019] Figure 3 Schematic diagram of the flow guide tube structure of the present invention.

[0020] Figure 4 It is a cross-sectional view of the flow guide tube of the present invention.

[0021] Figure numerals: 100, housing; 101, rack A; 102, limit bar A; 103, rack B; 104, limit bar B; 201, first air duct; 2011, fan; 202, second air duct; 203, third air duct; 2031, flat plate; 2032, smoke sensor; 204, fourth air duct; 2041, exhaust hole; 300, control device; 301, temperature sensor; 400, drive motor; 500, front cover. DETAILED DESCRIPTION

[0022] Preferred embodiments of the present invention are described in detail in the accompanying diagrams and figures, ensuring that professionals with basic technical knowledge can easily understand and apply them. However, this invention has the flexibility to be implemented in a variety of ways and should not be limited to the single solution described herein. To highlight the core content of the invention, non-critical components have been simplified or omitted in the diagrams. When understanding, please pay attention to the universality and variability of the diagrams.

[0023] like Figures 1 to 4 As shown, an indoor fire smoke sensor includes: a housing 100, a flow guide tube, a control device 300, a drive motor 400 and a front cover 500;

[0024] like Figure 1 , Figure 2 , Figure 4 As shown, the shell 100 is a square box with an open front end, and a skirt is provided on the outer periphery of the opening of the shell 100. The shell 100 is made of fireproof and temperature-resistant materials as a whole, and the shell 100 as a whole can be embedded in the wall around the indoor flammable materials; through holes are provided on the left and right side walls of the shell 100; a rack A101 and a limit bar A102 are provided on the left side wall of the inner cavity of the shell 100; the rack A101 is located above the through hole on the left side wall of the shell 100, and the limit bar A102 is located below the through hole on the left side wall of the shell 100; a rack B103 and a limit bar B104 are provided on the right side wall of the inner cavity of the shell 100; the rack B103 is located above the through hole on the right side wall of the shell 100; the limit bar B104 is located below the through hole on the right side wall of the shell 100;

[0025] like Figure 3 , Figure 4As shown, the guide tube is arranged inside the housing 100, and the guide tube is composed of a first guide tube 201, a second guide tube 202, a third guide tube 203 and a fourth guide tube 204; the cross-sections of the first guide tube 201, the second guide tube 202, the third guide tube 203 and the fourth guide tube 204 are all rectangular; the first guide tube 201 and the third guide tube 203 are arranged vertically front and back, the second guide tube 202 is arranged below the first guide tube 201 and the third guide tube 203 and connects the first guide tube 201 and the third guide tube 203, the fourth guide tube 204 is arranged above the first guide tube 201 and the third guide tube 203, and the tail end of the fourth guide tube 204 is connected to the third guide tube 203. The tops of the air guide tubes 203 are connected, and the front end of the fourth air guide tube 204 protrudes from the front end face of the first air guide tube 201. An exhaust hole 2041 is provided at the top of the front end face of the fourth air guide tube 204. The front end face of the first air guide tube 201 is provided with an opening, and a fan 2011 is provided in the opening. Rollers are provided on both the left and right side walls of the second air guide tube 202. The rollers provided on the left and right side walls of the second air guide tube 202 are respectively located below the limit bars A102 and the limit bars B104 and are in contact with the bottom surfaces of the limit bars A102 and B104. A flat plate 2031 is provided at the lower portion of the inner cavity of the third air guide tube 203. A smoke sensor 2032 is provided inside the flat plate 2031 in the inner cavity of the third air guide tube 203.

[0026] like Figure 3 , Figure 4 As shown, the control device 300 is arranged between the first guide tube 201 and the third guide tube 203. The left and right sides of the control device 300 are connected to the temperature sensor 301 through cables. The temperature sensor 301 is arranged around the indoor combustible material. The control device 300 is provided with a power storage module, a power supply module and a control module.

[0027] like Figure 3 As shown, the drive motor 400 is fixedly arranged on the top of the control device 300 and below the fourth guide tube 204. Gears are provided at the two suspended ends of the rotating shaft of the drive motor 400, and the two gears are respectively engaged with the rack A101 and the rack B103;

[0028] like Figure 3 , Figure 4 As shown, the front cover 500 is fixedly arranged on the front end surface of the fourth guide tube 204. The front cover 500 is made of fireproof and temperature-resistant material and has a cavity arranged inside.

[0029] Working principle of the present invention:

[0030] First, place the temperature sensor 301 near the combustible material in the room, and then power it through the control device 300. In the specific implementation, when the temperature sensor 301 detects that the ambient temperature reaches a set threshold, the control device 300 starts the drive motor 400.

[0031] The drive motor 400 drives the two gears on the rack A 101 and the rack B 103 to rotate, moving the guide tube a certain distance away from the housing 100, so that the front opening of the first guide tube 201 is flush with the front opening of the housing 100. The fan 211 is turned on to draw ambient air into the guide tube. The high-speed air flow is decelerated when passing through the plate 2031, forming a low-speed laminar flow and entering above the plate 2031.

[0032] The smoke sensor 2032 detects it, and when fire smoke is detected, the control device 300 issues a fire alarm; when the alarm duration reaches a preset duration, and the temperature sensor 301 detects that the ambient temperature continues to rise, the control device 300 controls the drive motor 400 to retract the guide tube into the shell 100, and at the same time the front cover 500 seals the opening of the shell 100; since the shell 100 and the front cover 500 are made of fire-proof and temperature-resistant materials, it can effectively avoid the problem that the smoke alarm will melt or even be damaged as the temperature rises, causing economic losses.

Claims

1. An indoor fire smoke sensor, comprising: A housing (100), a flow guide tube, a control device (300), a drive motor (400) and a front cover (500); characterized in that: a rack A (101) and a limit bar A (102) are arranged on the left side wall of the inner cavity of the housing (100); a rack B (103) and a limit bar B (104) are arranged on the right side wall of the inner cavity of the housing (100); the flow guide tube is arranged inside the housing (100), and the flow guide tube is composed of a first flow guide tube (201), a second flow guide tube (202), a third flow guide tube (203) and a fourth flow guide tube (204) connected end to end in sequence; an exhaust hole (2041) is arranged on the top of the front end of the fourth flow guide tube (204); an opening is arranged on the front end surface of the first flow guide tube (201), and a fan (2011) is arranged in the opening; a fan (2011) is arranged at the bottom of the inner cavity of the third flow guide tube (203); A plate (2031) is provided at the top of the control device (300); a smoke sensor (2032) is provided inside the inner plate (2031) of the third air guide tube (203); the control device (300) is provided between the first air guide tube (201) and the third air guide tube (203); both left and right sides of the control device (300) are connected to temperature sensors (301) through cables, and the temperature sensors (301) are provided around indoor flammable materials; the drive motor (400) is fixedly provided at the top of the control device (300) and below the fourth air guide tube (204); gears (401) are provided at the suspended ends of the two rotating shafts of the drive motor (400), and the two gears (401) are respectively meshed with a rack A (101) and a rack B (103); and the front cover (500) is fixedly provided at the front end surface of the fourth air guide tube (204).

2. The indoor fire smoke sensor according to claim 1, characterized in that: The outer shell (100) is entirely made of fireproof and temperature-resistant material, and the outer shell (100) can be embedded in a wall surrounding indoor flammable materials.

3. The indoor fire smoke sensor according to claim 1, characterized in that: The cross-sections of the first flow guiding tube (201), the second flow guiding tube (202), the third flow guiding tube (203) and the fourth flow guiding tube (204) are all rectangular.

4. The indoor fire smoke sensor according to claim 1, characterized in that: The control device (300) is provided with a power storage module, a power supply module and a control module.

5. The indoor fire smoke sensor according to claim 1, characterized in that: The front cover (500) is made of fireproof and temperature-resistant material and is provided with a cavity inside.

6. The indoor fire smoke sensor according to claim 1, characterized in that: The shell (100) is in the shape of a square box with an open front end, and a skirt is provided on the outer periphery of the opening of the shell (100); and through holes are provided on both left and right side walls of the shell (100).

7. The indoor fire smoke sensor according to claim 6, characterized in that: The rack A (101) is located above the through hole on the left side wall of the housing (100); the limit bar A (102) is located below the through hole on the left side wall of the housing (100); the rack B (103) is located above the through hole on the right side wall of the housing (100); and the limit bar B (104) is located below the through hole on the right side wall of the housing (100).

8. The indoor fire smoke sensor according to claim 1, characterized in that: The first flow guide tube (201) and the third flow guide tube (203) are arranged vertically in front and back; the second flow guide tube (202) is arranged below the first flow guide tube (201) and the third flow guide tube (203) and is connected to the first flow guide tube (201) and the third flow guide tube (203); the fourth flow guide tube (204) is arranged above the first flow guide tube (201) and the third flow guide tube (203); the tail end of the fourth flow guide tube (204) is connected to the top of the third flow guide tube (203), and the front end of the fourth flow guide tube (204) protrudes from the front end surface of the first flow guide tube (201).

9. The indoor fire smoke sensor according to claim 8, characterized in that: The left and right side walls of the second flow guide tube (202) are both provided with rollers, and the rollers provided on the left and right side walls of the second flow guide tube (202) are respectively located below the limit strip A (102) and the limit strip B (104) and are in contact with the bottom surfaces of the limit strip A (102) and the limit strip B (104).

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