Photoelectric induction smoke alarm

Abstract

The utility model relates to the technical field of alarms, and discloses a photoelectric induction smoke alarm, which comprises a bottom cover, a surface cover clamped and fixed on the inner side of the bottom cover, a battery and a circuit board fixedly arranged on the inner side of the bottom cover, the battery is electrically connected with the circuit board, and a photoelectric smoke detector, a photosensitive diode, a light emitting diode and a switch are fixedly arranged on the upper end face of the circuit board. A buzzer is fixedly adhered to the inner top wall of the surface cover, the buzzer is electrically connected with the circuit board, a light guide column is fixedly clamped on the surface cover, an insect-proof net is detachably fixed on the inner side of the bottom cover, and a mounting bracket is detachably fixed at the bottom end of the bottom cover. The photoelectric smoke detector immediately triggers an alarm signal and transmits the alarm signal to the buzzing piece through the circuit board, and the buzzing piece sends out loud alarm sound after receiving the alarm signal to remind people to pay attention and take corresponding measures, and the insect-proof net is regularly cleaned to prevent insects from blocking the heat dissipation opening of the alarm.

Description

TECHNICAL FIELD

[0001] The utility model relates to alarm technology field, specifically, relate to a photoelectricity response smoke alarm. BACKGROUND

[0002] The smoke alarm generally includes the casing and the photoelectricity response assembly (circuit board, emitter tube and receiving tube), it utilizes photoelectricity response principle, when the smoke exists in the air, the infrared light that emitter tube sends is scattered after irradiating to the smoke particle, the strength of scattered light is proportional to the concentration of smoke, the receiving tube converts the infrared light beam strength change that receives to the abnormal electric signal to circuit board, thereby triggers the alarm.

[0003] Through the retrieval, the patent with the announcement number of 201621363288.X discloses a fire alarm with a backup battery circuit, including alarm body, the surface of alarm body is equipped with flame retardant shell, the top of flame retardant shell is equipped with nameplate, the both sides of flame retardant shell are equipped with mounting plate, the side of nameplate is equipped with explosion-proof mounting frame, the surface of explosion-proof mounting frame is equipped with explosion-proof support, the side of explosion-proof support is equipped with mounting hole, the bottom of explosion-proof support is equipped with alarm lamp, the bottom of alarm lamp is equipped with loudspeaker, the back of alarm body is equipped with partition, the side of partition is equipped with temperature sensor, the side of temperature sensor is equipped with distribution box.

[0004] The existing device has some drawbacks in the process of using, for example: the above-mentioned scheme is difficult to detect trace amount of flue gas, specifically, when trace amount of flue gas is generated in the early stage of fire, the smoke sensor is difficult to quickly respond to capture these key signals, in this case, even if the fire has begun to spread, the alarm may delay triggering the alarm, or even completely not respond. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a photoelectricity response smoke alarm, solve the problem that it is difficult to detect trace amount of flue gas.

[0006] The utility model provides the following technical scheme: a photoelectricity response smoke alarm, including bottom cover, the inner side of bottom cover is connected with the fixed face cover, the inner side of bottom cover is fixedly installed with battery and circuit board, battery and circuit board are electrically connected, the upper end surface of circuit board is fixedly installed with photoelectricity smoke detector, photosensitive diode, light emitting diode and switch, the inner top wall of face cover is bonded with fixed buzzer piece, buzzer piece is electrically connected with circuit board, the face cover is connected with fixed light guide column, the inner side of bottom cover is detachably fixed with insect screen, the bottom end of bottom cover is detachably fixed with mounting bracket.

[0007] As the preferred technical scheme, the upper end surface of bottom cover is provided with annular guide groove, and the insect screen is inserted into the annular guide groove.

[0008] As the above technical scheme is preferred, the bottom cover lower end surface annular array is provided with a mounting groove, and the mounting bracket inner side wall is fixed with a plurality of mounting protrusions matched with the mounting groove.

[0009] As the above technical scheme is preferred, the surface cover is made of transparent material.

[0010] As the above technical scheme is preferred, the bottom cover side wall is provided with a mounting port matched with the switch.

[0011] As the above technical scheme is preferred, the mounting bracket is fixedly mounted on the to-be-mounted area by screws.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] In the utility model, the alarm continuously monitors the smoke condition in the surrounding environment, and once the smoke is detected, the photoelectric smoke detector will immediately trigger an alarm signal, which is transmitted to the buzzer through the circuit board. After receiving the alarm signal, the buzzer will emit a loud alarm sound, reminding people to pay attention and take corresponding measures, and the insect-proof net is regularly cleaned to prevent insects from blocking the alarm radiator. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic diagram of a photoelectric smoke alarm;

[0015] Figure 2 It is an explosion structure schematic diagram of a photoelectric smoke alarm;

[0016] Figure 3 It is an enlarged structure schematic diagram of a circuit board;

[0017] Figure 4 It is an internal connection structure schematic diagram of a photoelectric smoke alarm;

[0018] Figure 5 It is an exploded structure schematic diagram of an insect-proof net and a bottom cover;

[0019] Figure 6 It is an exploded structure schematic diagram of a bottom cover and mounting.

[0020] In the drawing: 1, surface cover; 101, mounting protrusion; 2, light guide column; 3, buzzer; 4, insect-proof net; 5, photoelectric smoke detector; 6, circuit board; 7, switch; 701, mounting port; 8, battery; 9, bottom cover; 901, annular guide groove; 91, mounting groove; 10, mounting bracket; 101, mounting protrusion; 11, photosensitive diode; 12, light-emitting diode. DETAILED DESCRIPTION

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Example

[0023] like Figures 1-6 As shown, this utility model provides a technical solution: a photoelectric smoke detector, including a bottom cover 9, a front cover 1 is snapped and fixed inside the bottom cover 9, the front cover 1 is made of transparent material, the transparent front cover 1 allows the light emitted by the light-emitting diode 12 to pass through freely and illuminate the area where the photoelectric smoke detector 5 is located. This is crucial for smoke detection because smoke particles scatter light, triggering the detector. A battery 8 and circuit board 6 are fixedly installed inside the bottom cover 9, and are electrically connected. A photoelectric smoke detector 5, a photodiode 11, an LED 12, and a switch 7 are fixedly installed on the upper surface of the circuit board 6. The photodiode 11 is adjacent to the photoelectric smoke detector 5 to ensure accurate reception and detection of light. The LED 12 serves as a light source, emitting light for the photoelectric smoke detector 5. Most of this light is directly received in a smoke-free state, but is scattered in a smoke-filled state, triggering the detector alarm. A mounting opening 701 for the switch 7 is provided on the side wall of the bottom cover 9. A buzzer 3 is glued and fixed to the inner top wall of the top cover 1, and is electrically connected to the circuit board 6. A clip on the top cover 1... The alarm is fixed with a light guide column 2, and a detachable insect screen 4 is fixed inside the bottom cover 9. A mounting bracket 10 is also detachably fixed at the bottom of the bottom cover 9. In actual use, the alarm is first fixed in the required position using the mounting bracket 10. The design of the mounting bracket 10 allows users to adjust the installation angle and height of the alarm as needed. Turn on the switch 7 to put the alarm into working condition. The alarm continuously monitors the smoke in the surrounding environment. Once smoke is detected, the photoelectric smoke detector 5 will immediately trigger an alarm signal, which is transmitted to the buzzer 3 through the circuit board 6. After receiving the alarm signal, the buzzer 3 will emit a loud alarm sound to remind people to pay attention and take appropriate measures. Clean the insect screen 4 regularly to prevent insects from clogging the alarm's heat dissipation vents. At the same time, check the battery 8's power level to ensure that the alarm can work normally at critical moments.

[0024] As one implementation method in this embodiment, such as Figure 4 and Figure 5 As shown, an annular guide groove 901 is provided on the upper surface of the bottom cover 9, and the insect net 4 is inserted into the annular guide groove 901. This structure allows the insect net 4 to be completely attached to and fixed on the bottom cover 9 to prevent insects from entering the device and to facilitate the replacement or cleaning of the insect net 4.

[0025] As one implementation method in this embodiment, such as Figure 6As shown, the mounting bracket 10 is fixedly installed on the area to be installed by screws, the bottom cover 9 is provided with a mounting groove 91 in the annular array at the lower end surface, and a plurality of mounting protrusions 101 adapted to the mounting groove 91 are fixed in the annular array on the inner side wall of the mounting bracket 10, and in the specific use process, the mounting bracket 10 is fixed on the wall or other area to be installed by screws, then the mounting groove 91 on the bottom cover 9 is aligned with the mounting protrusion 101 for insertion, and then the bottom cover 9 is rotated clockwise into the mounting bracket 10.

[0026] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them.

Claims

1. A photoelectric smoke detector, comprising a bottom cover (9), characterized in that: The bottom cover (9) is snapped and fixed to the inside of the top cover (1). The bottom cover (9) is fixedly installed with a battery (8) and a circuit board (6). The battery (8) and the circuit board (6) are electrically connected. The upper surface of the circuit board (6) is fixedly installed with a photoelectric smoke detector (5), a photodiode (11), a light-emitting diode (12), and a switch (7). The top wall of the top cover (1) is glued and fixed with a buzzer (3). The buzzer (3) is electrically connected to the circuit board (6). The top cover (1) is snapped and fixed with a light guide post (2). The bottom cover (9) is detachably fixed with an insect net (4). The bottom end of the bottom cover (9) is detachably fixed with a mounting bracket (10).

2. The photoelectric smoke detector according to claim 1, characterized in that: The bottom cover (9) has an annular guide groove (901) on its upper surface, and the insect-proof net (4) is inserted into the annular guide groove (901).

3. The photoelectric smoke detector according to claim 1, characterized in that: The bottom cover (9) has a ring array of mounting grooves (91) on its lower end face, and the mounting bracket (10) has a ring array of mounting protrusions (101) that are adapted to the mounting grooves (91) fixed on its inner side wall.

4. The photoelectric smoke detector according to claim 1, characterized in that: The cover (1) is made of transparent material.

5. A photoelectric smoke detector according to claim 1, characterized in that: The bottom cover (9) has an installation port (701) adapted to the switch (7) on its side wall.

6. A photoelectric smoke detector according to claim 1, characterized in that: The mounting bracket (10) is fixed to the area to be installed by screws.

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