CN218676200U

CN218676200U - Fire alarm system

Info

Publication number: CN218676200U
Application number: CN202222554235.8U
Authority: CN
Inventors: 陈洪
Original assignee: Sichuan Chuansheng Fire Engineering Co ltd
Current assignee: Sichuan Chuansheng Fire Engineering Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-03-21
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a fire alarm system, the equipment of current manually operation siren is solved to the purpose, need consume certain time technical problem. This fire alarm system includes: the middle part of the shell is provided with a channel, and the two ends of the channel are respectively provided with an air inlet and an air outlet; the fan is arranged in the channel, and the airflow passing through the fan is communicated to the air outlet from the air inlet; the humidity sensor is arranged between the fan and the air inlet; the light ray emitter is arranged between the fan and the air inlet, and the light rays emitted by the light ray emitter are vertical to the extending direction of the channel; the photoelectric sensor is arranged in the channel, one end of the light emitter, which emits light, is opposite to the photoelectric sensor, and the photoelectric sensor and the light emitter are respectively positioned on two sides of the channel; and the alarm is electrically connected with the photoelectric sensor and the humidity sensor. The fire alarm system has the advantage of automatically monitoring the fire.

Description

Fire alarm system

Technical Field

The utility model relates to an early warning device specifically relates to a fire alarm system.

Background

Fire alarm systems are one of the most important means of preventing fires. The fire alarm in the prior art is mostly controlled manually. For example, a button is arranged on the fire alarm, and when a dangerous case occurs, the button needs to be pressed to realize alarm. In addition, the fire alarm has a plastic casing to cover the button for preventing accidental touch.

The existing fire alarm needs to manually open a cover and press a button to start alarm, and for a fire scene, each second is precious, so that equipment of the existing manual operation alarm needs to consume a certain time.

SUMMERY OF THE UTILITY MODEL

To the equipment of current manually operation siren, need consume the certain time technical problem, the utility model provides a fire alarm system has the advantage that can monitor the condition of a fire automatically.

The technical scheme of the utility model is that:

a fire alarm system comprising:

the middle part of the shell is provided with a channel, and the two ends of the channel are respectively provided with an air inlet and an air outlet;

the fan is arranged in the channel, and the airflow passing through the fan is communicated to the air outlet from the air inlet;

the humidity sensor is arranged between the fan and the air inlet;

the light ray emitter is arranged between the fan and the air inlet, and the light rays emitted by the light ray emitter are vertical to the extending direction of the channel;

the photoelectric sensor is arranged in the channel, one end of the light emitter, which emits light, is opposite to the photoelectric sensor, and the photoelectric sensor and the light emitter are respectively positioned on two sides of the channel;

and the alarm is electrically connected with the photoelectric sensor and the humidity sensor.

Optionally, a filter screen is arranged between the humidity sensor and the fan.

Optionally, the lower part of the shell is provided with a slag leaking hole, and the slag leaking hole is positioned right below the filter screen.

Optionally, the sensing end of the humidity sensor is located in the middle of the channel.

Optionally, the inner wall of the channel has a rough anti-reflection surface.

Optionally, a threshold is respectively set in the photoelectric sensor and the humidity sensor.

Optionally, the air inlet and the air outlet of the channel face opposite directions respectively.

Optionally, the air inlet and the air outlet are both in a downward direction, and the directions are opposite.

Compared with the prior art, the beneficial effects of the utility model are that:

the system is mainly installed on a ceiling or a suspended ceiling, and the fan is arranged in the channel to enable airflow to enter the channel from the air inlet and to be output from the air outlet. When a fire occurs, smoke enters the channel from the air inlet, so that the intensity of light emitted by the light emitter irradiating the photoelectric sensor is reduced, then the humidity of the smoke detected by the humidity sensor is low, and the situation that the airflow contains a large amount of smoke can be judged. Threshold values are set in the photoelectric sensor and the humidity sensor, and when the detection value exceeds the threshold value, the fact that fire exists can be judged, and then the alarm can give out an alarm.

According to the technical scheme, the fire condition can be automatically identified, and the fire condition can be monitored all day long. When a fire occurs, an alarm can be provided for the personnel and sufficient escape time can be provided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged schematic view of the present invention.

Reference numerals:

1. a housing; 2. a light emitter; 3. a photoelectric sensor; 4. a humidity sensor; 5. a channel; 6. a deslagging mechanism; 7. a fan.

11. A small hole; 12. a pressing area; 13. and (4) a notch.

51. An air inlet; 52. and (7) air outlet.

611. A sealing block; 612. a water storage area; 613. a cover plate; 621. a top block; 622. a water passage; 631. a limiting block; 632. a slideway; 633. a spring; 64. and (5) filtering by using a filter screen.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the product of the present invention is conventionally placed when in use, or the position or positional relationship which is conventionally understood by those skilled in the art, and are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example (b):

referring to fig. 1, a fire alarm system comprises a shell 1, a fan 7, a humidity sensor 4, a light emitter 2, a photoelectric sensor 3, an electric sensor and an alarm. Specifically, the method comprises the following steps:

the housing 1 has a channel 5 therein, and the two ends of the channel 5 are respectively an air inlet 51 and an air outlet 52. The fan 7 is arranged in the channel 5, and the airflow can enter the channel 5 from the air inlet 51 and is discharged from the air outlet 52 after passing through the fan 7. A fan 7 is provided in the channel 5 to assist the flow of the air stream in the channel 5.

The humidity sensor 4, the light emitter 2 and the photoelectric sensor 3 are all arranged in the channel 5 and are all positioned between the air inlet 51 and the fan 7. The sensing end of the humidity sensor 4 is located in the middle of the channel 5, and the light emitter 2 and the photoelectric sensor 3 are respectively located on opposite sides in the channel 5. Wherein, the light emitted by the light emitter 2 is perpendicular to the extending direction of the channel 5 and is opposite to the sensing end of the photoelectric sensor 3.

The alarm is electrically connected with the photoelectric sensor 3 and the humidity sensor 4 respectively.

A threshold value is set in the humidity sensor 4 and the photoelectric sensor 3 respectively, and when the sensing end of the humidity sensor 4 and the sensing end of the photoelectric sensor 3 exceed the threshold values respectively, the alarm gives out an alarm sound. When the alarm gives an alarm sound, the humidity sensed by the humidity sensor 4 is lower than the set threshold value, and the light intensity sensed by the photoelectric sensor 3 is also lower than the set threshold value.

The working principle of the embodiment is as follows: the housing 1 is first installed in the ceiling, and the air in the room is made to enter the duct 5 from the air inlet 51 and then to be discharged from the air outlet 52 by the fan 7. If a fire occurs, larger smoke is inevitably generated, when the smoke enters the channel 5, the intensity of the light emitted by the light emitter 2 and irradiated on the photoelectric sensor 3 is reduced, and after the light is continuously reduced and the set threshold value is operated, the fact that a large amount of smoke exists in the channel 5 is indicated, and then the alarm can give an alarm. In addition, when a large amount of water vapor exists in the room, after the water vapor enters the channel 5, the light intensity sensed by the photoelectric sensor 3 can also be reduced and exceed the threshold value, at the moment, the humidity in the channel 5 is higher due to the water vapor, and the humidity sensed by the humidity sensor 4 is far greater than the threshold value set in the channel, so that the occurrence of a non-fire condition can be judged, and the alarm can not give an alarm. Since the smoke is usually dry and its humidity is below the threshold set in the humidity sensor 4, the alarm will only give an alarm if both the humidity and the light intensity are below the set threshold.

This embodiment summarizes, but the automatic identification condition of a fire to, but the full day control. When a fire occurs, an alarm can be provided for the personnel and sufficient escape time can be provided.

In one particular embodiment:

the inner walls of the channels 5 are provided with a rough anti-reflection surface, which is frosted and coated with a black coating.

In addition, the air inlet 51 and the air outlet 52 are respectively disposed downward, and are both obliquely downward, while facing in opposite directions.

In this embodiment, by providing the anti-reflection surface, the light emitted from the light emitter 2 is prevented from being reflected in the channel 5, so that the overall brightness in the channel 5 is improved, and the sensitivity of the photoelectric sensor is reduced. In addition, the air inlet 51 and the air outlet 52 with two different orientations are provided, so that the air flow between the air inlet 51 and the air outlet 52 can be prevented from circulating.

In another specific embodiment:

referring to fig. 2, the system further includes a deslagging mechanism 6, the deslagging mechanism 6 being disposed at the bottom of the housing 1. The slag removal mechanism 6 includes a sealing block 611, a top block 621 and a screen 64. Specifically, the method comprises the following steps:

the bottom of the housing 1 is provided with a groove in which the sealing block 611 is detachably fitted. One side of the sealing block 611 is provided with a concave water storage area 612, the water storage area 612 is provided with a cover plate 613, two sides of the cover plate 613 are connected with the sealing block 611, gaps are arranged between two ends of the cover plate 613 and the sealing block 611 to form a water inlet and an air outlet, the shell 1 is internally provided with a small hole 11 communicated with the air outlet, and the small hole 11 is communicated with the channel 5. The top of the water inlet is provided with a top block 621, the middle part of the top block 621 is provided with a water passage 622, the water passage 622 penetrates through two ends of the top block 621, and the water passage 622 is communicated with the water storage area 612.

The top of the top block 621 is provided with a filter screen 64, the filter screen 64 is located in the channel 5, and the filter screen 64 is located between the air inlet 51 and the fan 7.

In this embodiment, a filter 64 is provided to prevent dust from adhering to the blades of the fan 7. Meanwhile, when the amount of water vapor is large, the liquid beads condensed on the filter screen 64 can flow into the water storage area 612 along the water passage 622, and the liquid in the water storage area 612 can be poured out and the filter screen 64 can be replaced because the sealing block 611 is detachable.

In another specific embodiment:

the deslagging mechanism 6 further comprises a limiting block 631 and a spring 633. In the housing 1, two sides of the groove are respectively provided with a pressing area 12, and a slide 632 is transversely arranged in the pressing area 12.

A limit block 631 is further disposed in the pressing area 12, two sides of the limit block 631 are respectively provided with a slider, and the sliders are slidably disposed in the slide rails 632. The spring 633 is located in the pressing area 12 and is connected to the stopper 631.

After the sealing block 611 is disposed in the groove, the spring 633 drives the pressing block against the side of the sealing block 611. The two sides of the sealing block 611 are respectively provided with a limit block 631, so that the sealing block 611 can be clamped in the groove. In addition, two sides of the groove of the housing 1 are respectively provided with a notch 13, and the sealing block 611 is convenient to take out by arranging the notches 13.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A fire alarm system, comprising:

the humidity sensor is arranged between the fan and the air inlet;

the photoelectric sensor is arranged in the channel, one end of the light emitter, which emits light, is over against the photoelectric sensor, and the photoelectric sensor and the light emitter are respectively positioned on two sides of the channel;

2. A fire alarm system as in claim 1,

and a filter screen is arranged between the humidity sensor and the fan.

3. A fire alarm system as defined in claim 2,

and a slag leakage hole is formed in the lower part of the shell and is positioned right below the filter screen.

4. A fire alarm system as in claim 1,

and the sensing end of the humidity sensor is positioned in the middle of the channel.

5. A fire alarm system as defined in claim 1,

the inner wall of the channel has a rough anti-reflection surface.

6. A fire alarm system as in claim 1,

and a threshold value is respectively arranged in the photoelectric sensor and the humidity sensor.

7. A fire alarm system as in claim 1,

the air inlet and the air outlet of the channel face opposite directions respectively.

8. A fire alarm system as in claim 7,

the direction of the air inlet and the direction of the air outlet are both in the direction of slant downwards and opposite.