CN217386459U

CN217386459U - Smoke and phosgene combined fire detector

Info

Publication number: CN217386459U
Application number: CN202122373413.2U
Authority: CN
Inventors: 赵伟刚; 魏晖宇; 赵康柱
Original assignee: Shaanxi Aodekang Sensing Technology Co ltd
Current assignee: Shaanxi Aodekang Sensing Technology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-09-06
Anticipated expiration: 2031-09-29

Abstract

The utility model provides a pair of compound fire detector of cigarette gas, which comprises a base bod, its surface is provided with a plurality of guide formula flues, inside sets up optical sensor, gas detector and smoke detector, because the diameter of guide formula flue reduces gradually, adopt tubaeform structure to make the flue gas flow with higher speed, the flue gas flow resistance has been reduced, the sensitivity and the response speed of detector have been improved, adopt optical sensor simultaneously, gas detector and smoke detector survey the conflagration simultaneously, avoid appearing the phenomenon that the conflagration was missed to report, prevent stretching and enlarging of the intensity of a fire effectively, avoid taking place casualties or loss of property.

Description

Smoke and phosgene combined fire detector

Technical Field

The utility model relates to a fire detection technical field specifically is a compound fire detector of smoke and gas.

Background

In the modern society, fire accidents emerge endlessly, and pose a great threat to the normal production and life of people. With the development of social economy and the gradual improvement of fire fighting consciousness of people, the installation of wireless fire alarm equipment for preventing fire from happening becomes more and more popular, fire alarms comprise smoke, temperature, gas and flame fire detectors, and various fire detectors are generally installed in monitoring areas according to fire regulations to detect various types of fire.

However, many detectors are installed in one area, which is very easy to cause false alarm, such as smoke caused by cleaning and smoke generated during cooking, and is easy to cause a smoke alarm to give an alarm, and for example, hot air generated by air conditioner heating directly passes through a temperature alarm, which is easy to cause a temperature alarm to give an alarm, and simultaneously, the phenomenon of false alarm is easy to occur.

In order to solve the problems, a smoke and gas composite fire detector is needed to be designed to realize accurate fire detection and alarm.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a compound fire detector of smoke and gas realizes accurate conflagration detection and warning, avoids appearing the wrong report problem.

The utility model discloses a realize through following technical scheme:

a smoke and gas composite fire detector is characterized by comprising a base body, a cover plate, an optical detector, a smoke detector, a gas detector, a supporting plate and a flash alarm device;

the base body is of a circular hollow structure, a plurality of guide type flues are uniformly distributed on the circumference of the side wall of the base body, the supporting plate is arranged at the bottom of the base body, a circuit board is arranged on the supporting plate, the circuit board is electrically connected with the controller, and the controller is respectively and electrically connected with the optical detector, the smoke detector, the gas detector and the flash alarm device;

the smoke detector and the gas detector are arranged in the base body, the smoke detector is arranged around the guide type flue outlet, the top of the base body is provided with a mounting hole, the optical detector is arranged in the mounting hole and connected with the base body, the top of the optical detector is provided with a cover plate, the cover plate is connected with the base body, the top of the cover plate is provided with a light guide port and is just opposite to the detection end of the optical detector, the flashing alarm device is arranged at the inner bottom of the base body, and the bottom of the base body is provided with a base.

Preferably, the smoke detector is an ionic smoke sensor or a photoelectric smoke sensor.

Preferably, the gas detector is a catalytic combustion type sensor, an electrochemical sensor, or a semiconductor type sensor for detecting the concentration of gas generated when a fire breaks out.

Preferably, the optical detector is in an infrared flame type, an ultraviolet flame type or a dual-waveband image type and is used for detecting the flame intensity generated when a fire disaster occurs.

Preferably, the guide flue is of a horn-shaped structure, one end with a large diameter is located on the side wall of the base body and communicated with the outside, and the other end extends to the inside of the base body.

Preferably, the guide flue is a rotating body with a curvature radius R of 120-200 mm, and the aperture of the guide flue is gradually reduced from the inlet of the flue gas to the outlet of the flue gas.

Preferably, the flash alarm device comprises a singlechip for flash alarm and at least two light-emitting diodes connected with the singlechip, the singlechip and the light-emitting diodes are packaged in a transparent shell, and a flash circuit and a control program of the flash circuit are arranged in the singlechip; the input port of the single chip is connected with the controller, the output port of the single chip is connected with the light emitting diodes, and the two light emitting diodes are color light emitting diodes with different colors.

A detection method of a smoke and gas composite fire detector comprises the following steps:

when the detection values of the optical detector, the smoke detector and the gas detector are all within a preset threshold range, no alarm signal is output;

when the detection value of any one of the optical detector, the smoke detector and the gas detector exceeds a threshold interval, outputting a fire early warning signal;

when the detection values of any two detectors in the optical detector, the smoke detector and the gas detector exceed a threshold interval, a fire alarm signal and an evacuated crowd alarm signal are output.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model provides a pair of compound fire detector of cigarette gas, which comprises a base bod, its surface is provided with a plurality of guide formula flues, inside sets up optical sensor, gas detector and smoke detector, because the diameter of guide formula flue reduces gradually, adopt tubaeform structure to make the flue gas flow with higher speed, the flue gas flow resistance has been reduced, the sensitivity and the corresponding speed of detector have been improved, adopt optical sensor simultaneously, gas detector and smoke detector survey the conflagration simultaneously, avoid appearing the phenomenon that the conflagration was missed to report, prevent stretching and enlarging of the intensity of a fire effectively, avoid taking place casualties or loss of property.

Drawings

FIG. 1 is an internal structure diagram of the smoke and gas combined fire detector of the present invention;

fig. 2 is a top view of the smoke and gas combined fire detector of the present invention.

In the figure: 1. a warning light; 2. a cover plate; 3. an optical detector; 4. a substrate; 5. a gas detector; 6. a smoke detector; 7. a support plate; 8. a base.

Detailed Description

The present invention will be described more fully hereinafter with reference to the accompanying drawings, which are given by way of illustration and not by way of limitation.

Referring to fig. 1 and 2, a smoke and gas combined fire detector includes a base 4, a cover plate 2, an optical detector 3, a smoke detector 6, a gas detector 5, a support plate 7, and a base 8.

Base member 4 is circular shape hollow structure, the circumference equipartition has a plurality of guide-type flues on the lateral wall of base member 4, the backup pad sets up the bottom at the base member, be provided with the circuit board in the backup pad, circuit board electrical connection director, smoke detector 6 and gas detector 5 set up the inside at base member 4, smoke detector 6 is located around the guide-type flue export, the top of base member 4 is provided with the mounting hole, optical detector 3 sets up in the mounting hole and is connected with base member 4, the apron sets up the top at optical detector 3, the top of apron is provided with light guide mouth and just to optical detector 3's detection end, smoke detector 6, gas detector 5 and optical detector 3 are connected with the controller respectively, 8 rigid couplings of base are at the lower extreme of base member.

The utility model discloses a detector, including base member, guiding flue, inlet end, outlet end, diameter, the diameter of guiding flue is tubaeform structure, and the one end that the diameter is big is located the lateral wall of base member and communicates with the outside, the other end extends from the inside of base member, the guiding flue is the rotator of curvature radius R120 ~ 200mm, this guiding flue reduces from the entry of flue gas to the exit end aperture of flue gas gradually, the diameter of flue gas entry end is 2-3 times of exit end diameter, the flue gas gets into the back from the entry end of guiding flue, because the diameter of guiding flue reduces gradually, adopt tubaeform structure to make the flue gas flow with higher speed, the flue gas flow resistance has been reduced, the sensitivity and the corresponding speed of detector have been improved.

The smoke detector comprises a smoke detection labyrinth, an infrared transmitting element and an infrared receiving element, wherein the infrared transmitting element is arranged in the smoke detection labyrinth, and the infrared transmitting element and the infrared receiving element are connected with an alarm output terminal for outputting an alarm signal. The infrared transmitting element adopts an infrared transmitting tube, the infrared receiving element adopts a photosensitive tube, the smoke detection module detects a labyrinth through smoke, an infrared light beam of the infrared transmitting tube is scattered by smoke particles, the intensity of scattered light is in direct proportion to the concentration of smoke, the intensity of the infrared light beam received by the photosensitive tube can be changed and converted into a point signal, and then the point signal is converted into an alarm signal to output a fire alarm signal.

The optical detector 3 is provided with a double-lens ultraviolet photoelectric tube, and the optical detector 3 can adopt an infrared flame type, an ultraviolet flame type or a double-waveband image type and is used for detecting the flame intensity generated when a fire disaster occurs.

The smoke detector is an ion smoke sensor or a photoelectric smoke sensor.

The gas detector 5 is a catalytic combustion type sensor, an electrochemical sensor, or a semiconductor type sensor, and detects the concentration of gas generated when a fire breaks out.

Still be provided with flash of light alarm device and warning light 1 on this base member, flash of light alarm device sets up in the base member and is connected with the controller, and warning light 1 is connected with the controller and sets up on the top surface of base member, and the warning light is used for instructing the operating condition of compound fire detector of cigarette phosgene, and flash of light alarm device is used for exporting the alarm signal of conflagration, still is provided with the group battery on the base for provide electric power to controller, flash of light alarm device and pilot lamp.

The warning light 1 includes work pilot lamp, alarm indicator and fault indicator, and when the conflagration did not appear, the work pilot lamp was lighted, and when the compound fire detector of cigarette phosgene broke down, the fault indicator was lighted, and when the conflagration appeared in monitoring area, the alarm indicator was lighted.

The flash alarm device is arranged at the inner bottom of the base body and connected with the controller, the flash alarm device comprises a single chip microcomputer for flash alarm and at least two light emitting diodes connected with the single chip microcomputer, and the single chip microcomputer and the light emitting diodes are packaged in a transparent shell. The single chip microcomputer is internally provided with a flash circuit and a control program of the flash circuit. The input port of the singlechip is connected with the controller, and the output port of the singlechip is connected with the light-emitting diode. The two LEDs are color LEDs of different colors, one of which is red and the other is blue, are connected to the output port of the single chip microcomputer and emit light in the form of alternate flashing. When a fire disaster is detected, the singlechip receives an output signal of the controller, starts the two light-emitting diodes, and enables the two light-emitting diodes to flash alternately to emit red and blue alarm lights.

When the smoke and phosgene compound fire detector works, the flame intensity, smoke particle concentration and gas concentration of a monitoring area are respectively detected through an optical detector, a smoke detector and a gas detector, and the obtained detection values are sent to a controller for judgment; when the detection value of any one of the optical detector, the smoke detector and the gas detector exceeds a threshold interval, outputting a fire early warning signal; when the detection values of any two detectors in the optical detector, the smoke detector and the gas detector exceed a threshold interval, a fire alarm signal and an evacuation crowd alarm signal are output, and the alarm starts to generate a sound-light alarm signal, so that personnel are reminded to cool or extinguish a fire in time, the fire is effectively prevented from spreading and expanding, and casualties or property loss is avoided.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. A smoke and phosgene composite fire detector is characterized by comprising a base body (4), a cover plate (2), an optical detector (3), a smoke detector (6), a gas detector (5), a supporting plate (7) and a flash alarm device;

the base body (4) is of a circular hollow structure, a plurality of guide type flues are uniformly distributed on the circumference of the side wall of the base body (4), the supporting plate is arranged at the bottom of the base body, a circuit board is arranged on the supporting plate and electrically connected with the controller, and the controller is respectively and electrically connected with the optical detector (3), the smoke detector (6), the gas detector (5) and the flash alarm device;

smoke detector (6) and gas detector (5) set up in the inside of base member (4), smoke detector (6) are located around the guide flue export, the top of base member (4) is provided with the mounting hole, optical detector (3) set up in the mounting hole and are connected with base member (4), the top of optical detector (3) is provided with the apron, the apron is connected with the base member, the top of apron is provided with light guide port and just to the detection end of optical detector (3), the interior bottom of base member is located to flash of light alarm device, the bottom of base member is provided with the base.

2. The smoke and gas combined fire detector as claimed in claim 1, wherein said smoke detector is an ion smoke sensor or a photoelectric smoke sensor.

3. The smoke and gas composite fire detector as claimed in claim 1, wherein said gas detector (5) is a catalytic combustion type sensor, an electrochemical sensor or a semiconductor type sensor for detecting the concentration of gas generated in the event of fire.

4. The smoke and gas composite fire detector as claimed in claim 1, wherein said optical detector (3) is of infrared flame type, ultraviolet flame type or dual-band image type for detecting the flame intensity generated in case of fire.

5. The smoke and gas composite fire detector as claimed in claim 1, wherein the guiding flue is of a trumpet structure, one end with a large diameter is positioned on the side wall of the substrate and communicated with the outside, and the other end extends to the inside of the substrate.

6. The smoke and gas combined fire detector as claimed in claim 5, wherein the guiding flue is a rotating body with a curvature radius R of 120-200 mm, and the diameter of the guiding flue is gradually reduced from the inlet of the smoke to the outlet of the smoke.

7. The smoke and gas composite fire detector according to claim 1, wherein the flash alarm device comprises a single chip microcomputer for flash alarm and at least two light emitting diodes connected with the single chip microcomputer, the single chip microcomputer and the light emitting diodes are packaged in a transparent shell, and a flash circuit and a control program of the flash circuit are arranged in the single chip microcomputer; the input port of the single chip is connected with the controller, the output port of the single chip is connected with the light emitting diodes, and the two light emitting diodes are color light emitting diodes with different colors.