Vortex airflow drainage type smoke alarm structure

Abstract

The utility model discloses a vortex airflow drainage type smoke alarm structure, which relates to the smoke alarm field, and comprises a housing, the bottom end of the housing is provided with a port, the port is communicated with the interior of the housing, the port is internally provided with a filter screen, the top end of the housing is fixedly provided with a small motor, the bottom end of the small motor is provided with a driving shaft, and the driving shaft is connected with the motor. The driving shaft extends into the outer shell, a vortex air suction fan is fixed to the outer side of the extending end of the driving shaft, an air outlet is formed in the top end of the outer shell, the air outlet is communicated with the interior of the outer shell, and the air outlet is formed in one side of the small motor. The small motor can drive the vortex suction fan to rotate, so that the speed of external air entering the shell is increased, the vortex airflow design can accelerate air flow, smoke particles can enter the shell more quickly and uniformly, the smoke concentration detection time is shortened, and the use safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a smoke alarm field, especially a vortex airflow drainage type smoke alarm structure. BACKGROUND

[0002] The smoke alarm is actually an alias of the smoke alarm, and the smoke alarm realizes fire prevention by monitoring the concentration of smoke. The smoke alarm uses an ionic smoke sensor. The ionic smoke sensor is a sensor with advanced technology, stable and reliable work, and is widely used in various fire alarm systems. The performance is much better than that of the gas-sensitive resistor type fire alarm.

[0003] The existing smoke alarm is automatically drifted by the smoke particles in the air into the smoke alarm. The sensor in the smoke alarm contains radioactive substances that can generate an electric current. When the smoke particles in the smoke enter the sensor, the electric current is disturbed, causing the alarm to sound. It takes a certain amount of time for the smoke to drift into the alarm, and when there is wind, it will increase the time monitored by the alarm, which can cause greater losses.

[0004] Therefore, it is necessary to provide a vortex airflow drainage type smoke alarm structure to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a vortex airflow drainage type smoke alarm structure to solve the problem that the existing smoke alarm is automatically drifted by the smoke particles in the air into the smoke alarm, and the sensor in the smoke alarm contains radioactive substances that can generate an electric current. When the smoke particles in the smoke enter the sensor, the electric current is disturbed, causing the alarm to sound. It takes a certain amount of time for the smoke to drift into the alarm, and when there is wind, it will increase the time monitored by the alarm, which can cause greater losses.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a vortex airflow drainage type smoke alarm structure, comprising a shell, a through hole is formed in the bottom end of the shell, the through hole and the inside of the shell are communicated, a filter screen is installed in the through hole, a small motor is fixed to the top end of the shell, a driving shaft is arranged at the bottom end of the small motor, the driving shaft extends into the inside of the shell, and a vortex air suction fan is fixed to the outside of the extending end of the driving shaft;

[0007] An air outlet is formed in the top end of the shell, the air outlet and the inside of the shell are communicated, and the air outlet is arranged on one side of the small motor.

[0008] Preferably, the top end of the shell is fixed with a connecting plate on each side, the two connecting plates are both arranged in an L shape, and the two connecting plates are both provided with fixing screws, and the height of the connecting plate is higher than the height of the small motor.

[0009] Preferably, the shell is arranged as a circular truncated cone structure, and the diameter of the bottom end of the circular truncated cone structure is smaller than the radius of the top end of the circular truncated cone structure.

[0010] Preferably, a smoke sensor is arranged at the bottom end of the vortex air suction fan, and a buzzer alarm is arranged outside the shell.

[0011] Preferably, a plurality of air inlets are arranged outside the shell, the plurality of air inlets are in communication with the inside of the shell, and the plurality of air inlets are distributed at equal distances around the center of the shell.

[0012] Preferably, at least one air outlet is arranged, and a baffle is arranged on the side of the air outlet away from the small motor, and the baffle is arranged as an L shape.

[0013] Preferably, a filter screen is arranged in each of the plurality of air inlets.

[0014] The technical effects and advantages of the present application are as follows:

[0015] 1. In the actual operation of the present application, the small motor can drive the vortex air suction fan to rotate by starting the small motor, thereby accelerating the speed of external air entering the inside of the shell. The vortex air flow design can accelerate air flow, so that smoke particles enter the inside of the shell more quickly and uniformly, shorten the detection time of smoke concentration, and improve the safety of use.

[0016] 2. By directing the air flow, the deposition of dust, water vapor and other interference substances in the shell can be reduced, the false alarm rate can be reduced, and the present application is suitable for places with complex air flow such as kitchens and warehouses.

[0017] 3. When there is no smoke, the air flow sucked by the vortex air suction fan can be discharged from the air outlet, avoiding the accumulation of air flow in the shell, and the excess particles and impurities in the air can be discharged, avoiding accumulation, and the discharged air flow can be blown onto the small motor through the blocking of the baffle, thereby cooling the small motor and prolonging the service life of the small motor.

[0018] 4. At the same time, the two connecting plates can leave a gap between the shell and the indoor top surface, facilitate the discharge of excess air flow, and provide a certain heat dissipation space for the small motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a schematic view of the vortex air flow drainage type smoke alarm structure of the present application.

[0020] Fig. 2 It is a structural schematic view of the small motor, the air outlet and the baffle of the present application.

[0021] Fig. 3The utility model discloses a vortex air suction fan and the structure diagram of smoke sensor.

[0022] In the drawing: 1, shell, 2, filter screen, 3, air inlet, 4, connecting plate, 5, fixed screw, 6, small motor, 7, air outlet, 8, baffle, 9, vortex air suction fan, 10, smoke sensor, 11, buzzer alarm. DETAILED DESCRIPTION

[0023] The utility model provides a vortex air flow drainage type smoke alarm structure as Figs. 1-3 As shown in a kind of vortex air flow drainage type smoke alarm structure, including shell 1, the top end of shell 1 both sides are fixed with connecting plate 4, two connecting plates 4 are all set to L shape, and two connecting plates 4 are all provided with fixed screw 5, the height of connecting plate 4 is higher than the height of small motor 6.

[0024] In the actual operation of the utility model, using personnel can use fixed screw 5 and fix connecting plate 4 in indoor top surface, complete the installation of entire device.

[0025] Shell 1 bottom end is provided with through mouth, and through mouth and the inside of shell 1 are communicated, filter screen 2 is installed in through mouth, small motor 6 is fixed at the top end of shell 1, small motor 6 bottom end is provided with driving shaft, driving shaft extends into the inside of shell 1, and fixed vortex air suction fan 9 is fixed on the outside of end extension, and smoke sensor 10 is installed at the bottom end of vortex air suction fan 9.

[0026] It should be noted that smoke sensor 10 can also be installed on the inner wall of shell 1, and can be installed at a suitable position as needed.

[0027] In the actual operation of the utility model, by starting small motor 6, small motor 6 can drive vortex air suction fan 9 to rotate, to accelerate the speed of external air into the inside of shell 1, vortex air flow design can accelerate air flow, so that smoke particles enter the inside of shell 1 more quickly and evenly, shorten the detection time of smoke concentration, improve the safety of use.

[0028] By directional guiding airflow, the deposition of dust, water vapor and other interference materials in shell 1 can be reduced, the false alarm rate is reduced, and the utility model is suitable for places with complex air flow, such as kitchen and warehouse.

[0029] Shell 1 top end is provided with air outlet 7, air outlet 7 and the inside of shell 1 are communicated, and air outlet 7 is arranged on one side of small motor 6, air outlet 7 is provided with at least one, and baffle 8 is fixed on the side of air outlet 7 away from small motor 6, baffle 8 is set to L shape.

[0030] Further, when there is no smoke, the air current sucked by the vortex suction fan 9 can be discharged from the air outlet 7, avoiding the air current from gathering inside the shell 1, and the excess particles and impurities in the air can be discharged, avoiding accumulation, and the discharged air current can be blown onto the small motor 6 by the blocking of the baffle 8, cooling the small motor 6 and improving the service life of the small motor 6.

[0031] At the same time, the two connecting plates 4 can leave a gap between the shell 1 and the indoor top surface, facilitating the discharge of excess air current and providing a certain heat dissipation space for the small motor 6.

[0032] The shell 1 is provided in a circular truncated cone structure, the bottom diameter of the circular truncated cone structure is smaller than the top radius of the circular truncated cone structure, and the outer side of the shell 1 is provided with a buzzer alarm 11.

[0033] When the smoke sensor 10 detects smoke, the buzzer alarm 11 can be controlled by the controller to alarm. Since the smoke sensor 10, the controller, and the buzzer alarm 11 are prior art, they will not be described here.

[0034] The shell 1 is provided with air inlets 3 on the outer side, and the air inlets 3 are provided in multiple numbers, the multiple air inlets 3 are all in communication with the inside of the shell 1, and the multiple air inlets 3 are distributed at equal distances around the center of the shell 1. Increasing the multiple air inlets 3 can expand the channel for smoke particles and air current to enter, and increase the monitoring efficiency.

[0035] The multiple air inlets 3 are all provided with filter screens to prevent external dust from entering.

Claims

1. A smoke alarm of the vortex air flow induction type comprising a housing (1) characterised in that: The bottom end of the shell (1) is provided with a through port, which is communicated with the inside of the shell (1), and the through port is provided with a filter screen (2); the top end of the shell (1) is fixedly provided with a small motor (6), the bottom end of the small motor (6) is provided with a driving shaft, the driving shaft extends into the inside of the shell (1), and the outside of the extending end is fixedly provided with a vortex air suction fan (9). The top end of the shell (1) is provided with an air outlet (7), the air outlet (7) is communicated with the inside of the shell (1), and the air outlet (7) is arranged on one side of the small motor (6).

2. A vortex air flow induced smoke alarm structure according to claim 1, wherein: The top end of the shell (1) is fixedly provided with a connecting plate (4) on each side, the two connecting plates (4) are both arranged in an L shape, and the two connecting plates (4) are both provided with a fixing screw (5); the height of the connecting plate (4) is higher than the height of the small motor (6).

3. A vortex air flow induced smoke alarm structure according to claim 1, wherein: The shell (1) is arranged in a circular truncated cone structure, and the diameter of the bottom end of the circular truncated cone structure is smaller than the radius of the top end of the circular truncated cone structure.

4. A vortex air flow induced smoke alarm structure according to claim 1, wherein: The bottom end of the vortex air suction fan (9) is provided with a smoke sensor (10), and the outside of the shell (1) is provided with a buzzer alarm (11).

5. A vortex air flow induced smoke alarm structure according to claim 1, wherein: The outside of the shell (1) is provided with a plurality of air inlets (3), the plurality of air inlets (3) are all communicated with the inside of the shell (1), and the plurality of air inlets (3) are distributed at equal distances around the center of the shell (1).

6. A vortex air flow induced smoke alarm structure according to claim 1, wherein: The air outlet (7) is provided with at least one, and the air outlet (7) is fixedly provided with a baffle (8) away from one side of the small motor (6), and the baffle (8) is arranged in an L shape.

7. A vortex air flow induced smoke alarm structure according to claim 5, wherein: The plurality of air inlets (3) are all provided with filter screens.

Images