KR-20260067713-A - Gas analysis device and analysis system using absorbed light and scattered light

KR20260067713AKR 20260067713 AKR20260067713 AKR 20260067713AKR-20260067713-A

Abstract

The present invention relates to a fire gas analysis device and analysis system using absorbed light and scattered light, and more specifically, to a gas analysis device using absorbed light and scattered light comprising: a main body having an inlet section for introducing air containing smoke provided on one side and an outlet section for discharging air on the other side; and a smoke detection section provided within the main body for detecting the smoke and measuring and analyzing the type of gas within the smoke; wherein the smoke detection section comprises: a darkroom housing; an inlet section provided on one side of the housing for introducing air introduced into the main body inlet section; a light-emitting sensor provided within the housing for irradiating light; a scattered light sensor for measuring scattered light scattered by the light on smoke particles; and an absorbed light sensor for measuring absorbed light absorbed by the light on smoke particles.

Inventors

이영만

Assignees

올라이트라이프주식회사

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (8)

As a gas analyzer, A main body having an inlet for introducing smoke-containing air provided on one side and an outlet for discharging air on the other side; and It includes a smoke detection unit provided within the main body, which detects the smoke and measures and analyzes the type of gas within the smoke. The above smoke detection unit is, A gas analysis device using absorbed light and scattered light, characterized by comprising: a darkroom housing; an inlet section provided on one side of the housing for introducing air introduced into the main body inlet section; a light-emitting sensor provided within the housing for irradiating light; a scattered light sensor for measuring scattered light scattered by light on smoke particles; and an absorbed light sensor for measuring absorbed light absorbed by light on smoke particles.
In Article 1, A gas analysis device using absorbed light and scattered light, characterized in that the above-mentioned light-emitting sensor includes an IR LED and a blue LED.
In Paragraph 2, It further includes a scattering plate provided at the inlet end; and A gas analysis device using absorbed light and scattered light, characterized in that the light-emitting sensor irradiates light toward the scattering plate side, and the absorption light sensor is provided on one side of the scattering plate.
In Paragraph 3, A gas analysis device using absorbed light and scattered light, further comprising: a scattered light open reflection prevention part provided on the inner surface of the housing at a position opposite to the scattered light sensor to prevent open reflection of the scattered light from being received by the scattered light sensor.
In Paragraph 4, A gas analysis device using absorbed light and scattered light, characterized by further including an analysis unit that determines the type of gas based on absorbed light data measured by the absorption light sensor and scattered light data measured by the scattered light sensor.
In Paragraph 5, The above analysis unit is, A gas analysis device using absorbed light and scattered light, characterized by determining the type of gas based on the ratio of blue LED to IR LED of the absorbed light data and the ratio of blue LED to IR LED of the scattered light data.
In Paragraph 6, It further includes a gas type DB in which data regarding the ratio of blue LEDs to IR LEDs of the absorbed light data and the ratio of blue LEDs to IR LEDs of the scattered light data for each gas type is stored. A gas analysis device using absorbed light and scattered light, characterized in that the above analysis unit determines the type of gas by matching the stored data based on the ratio of blue LED to IR LED of the absorbed light data and the ratio of blue LED to IR LED of the scattered light data.
In Paragraph 6, It further includes a fire type DB in which data regarding the ratio of blue LEDs to IR LEDs of the absorbed light data and the ratio of blue LEDs to IR LEDs of the scattered light data for each fire type is stored. A gas analysis device using absorbed light and scattered light, characterized in that the above analysis unit determines the type of fire by matching the stored data based on the ratio of blue LED to IR LED of the absorbed light data and the ratio of blue LED to IR LED of the scattered light data.

Description

Gas analysis device and analysis system using absorbed light and scattered light The present invention relates to a fire gas analysis device and analysis system using absorbed light and scattered light. Generally, interlocked and standalone fire detectors are broadly classified according to their sensing method into fixed-temperature detectors that detect indoor temperature and photoelectric smoke detectors that detect indoor smoke particles through the scattering of light. A photoelectric smoke detector is attached to an object to be installed, such as an indoor ceiling or wall of a building, and utilizes a light-emitting sensor that emits light and a light-receiving sensor that receives the light emitted from the light-emitting sensor. When the light emitted by the light-emitting sensor is scattered by the smoke and received by the light-receiving sensor, the change in concentration caused by the presence of smoke is converted into a predetermined electrical signal to detect the smoke that has entered the dark room inside, thereby activating an alarm device to notify people inside the room of the occurrence of a fire and enable them to respond quickly. For example, Korean Patent Publication No. 10-2021-0054098 discloses a smoke detector comprising: a darkroom plate that is housed inside a main body and has a plurality of guide vanes formed along its outer periphery to guide air introduced through an air inlet to a central area; a shielding plate coupled to the upper part of the guide vanes to block the inflow of external light; a smoke sensor unit provided on the darkroom plate to detect the inflow of smoke into the darkroom plate; a test unit provided on one side of the smoke sensor unit to check whether the smoke sensor unit is operating normally; and a control unit that, when a test signal for the smoke sensor unit is received, operates the test unit to determine whether the smoke sensor unit is operating normally, and can automatically check whether the smoke sensor unit is operating normally by changing the infrared light path to face a light receiving member using an optical shutter when no smoke is introduced. According to the aforementioned prior art literature, in the case of a light-emitting diode and a photodiode embedded inside a darkroom plate, when particles such as smoke enter the smoke sensor unit in the air, the light is scattered by these smoke particles and detected by the photodiode. At this time, the smoke concentration is configured to be measured in proportion to the amount of incoming scattered infrared light. However, in the case of the aforementioned prior art, since it projects infrared rays having a central wavelength in a single wavelength range, there was a problem in that a fire alarm occurred even in the surrounding environment under conditions unrelated to fire, such as water vapor or dust. In addition, the aforementioned prior art had problems such as false alarms caused by detecting dust or steam regardless of whether a fire had occurred, as the particle size of smoke, dust, and steam could not be determined. The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a perspective view of a gas analysis device using absorbed light and scattered light according to an embodiment of the present invention. FIG. 2 is a front view of a gas analysis device using absorbed light and scattered light according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a gas analysis device using absorbed light and scattered light according to an embodiment of the present invention. FIG. 4 is a right side view of a gas analysis device using absorbed light and scattered light according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of a smoke detection unit according to an embodiment of the present invention, FIG. 6 is an exploded plan view of a gas analysis device using absorbed light and scattered light according to an embodiment of the present invention. FIGS. 7 and FIGS. 8 are cross-sectional views of FIG. 6, AA The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to ensure that the spirit of the invention is sufficiently conveyed to a person skilled in the art. In this specification, when a component is described