Optical detection module structure of gas alarm

Abstract

The utility model discloses a gas alarm optical detection module structure which comprises a first detection bin and a first circuit board, the first detection bin is arranged at the upper end of the first circuit board, a first partition plate is arranged in the middle of the first detection bin, a first reflection part is arranged at the left end of the first detection bin, and a second reflection part is arranged at the right end of the first detection bin. The first reflection part is perpendicular to the first circuit board in a right-angle shape, the bent part of the first reflection part corresponds to the extending position of the first partition plate, the right end of the first detection bin is provided with a second reflection part, and the second reflection part is obliquely arranged towards the lower right at an angle of 45 degrees; the first circuit board is provided with a first transmitting sensor and a first receiving sensor, and the first transmitting sensor and the first receiving sensor are arranged below the second reflection part. According to the optical detection module structure of the gas alarm provided by the utility model, through the reflection of the first reflection part and the second reflection part, the stroke of gas detection is increased, and the accuracy of gas detection is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the detection module field, concretely relates to a gas alarm optical detection module structure. BACKGROUND

[0002] With the improvement of people's living standards, more and more people have higher requirements for the safety and comfort of living space. Household gas alarm can monitor the leakage of combustible gas in real time. Once leakage occurs, if the concentration of combustible gas in the air reaches a certain concentration, the alarm will immediately sound and light, effectively preventing accidents and meeting people's needs for gas safety. Many current gas alarms emit light through the detection gas by emitting sensors and are received by receiving sensors to detect the concentration of the gas. However, the current gas alarm is directly opposite to the emitting sensor and the receiving sensor, so the detection distance of the gas is short and the accuracy of the detection is relatively low. SUMMARY

[0003] To solve the problems in the prior art, the utility model provides a gas alarm optical detection module structure.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A gas alarm optical detection module structure, comprising a first detection bin and a first circuit board, the first detection bin is arranged at the upper end of the first circuit board, the middle part of the first detection bin is provided with a first partition plate, the left end of the first detection bin is provided with a first reflection part, the first reflection part is arranged vertically to the first circuit board in a right angle shape, the bending part of the first reflection part corresponds to the extension of the first partition plate, the right end of the first detection bin is provided with a second reflection part, the second reflection part is arranged to be inclined to the right and down at an angle of 45 degrees, the first circuit board is provided with a first emitting sensor and a first receiving sensor, the first emitting sensor and the first receiving sensor are arranged below the second reflection part, the first emitting sensor corresponds to the rear end of the first partition plate, and the first receiving sensor corresponds to the front end of the first partition plate.

[0006] Further, the right end of the first detection bin is provided with a first through hole, and the upper end of the first detection bin is provided with a first opening, the first through hole and the first opening are used for the entry of the detection gas in the first detection bin.

[0007] Further, the lower end of the first detection bin is provided with a plurality of first through holes, the first through holes are connected with the first circuit board, and the first through holes are used for the entry of the detection gas in the first detection bin.

[0008] Further, the first circuit board is provided with a first heat dissipation plate, and the upper end of the first heat dissipation plate is provided with a first grid bar, and the first emission sensor is arranged on the first heat dissipation plate.

[0009] Further, the inner side of the first detection bin is provided with a first electroplated layer, and the first electroplated layer is used for improving the reflectivity of the first detection bin.

[0010] Further, the lower end of the first detection bin is provided with a plurality of first hooks, and the first circuit board is provided with a plurality of first hanging holes, and the first hooks and the first hanging holes are one-to-one corresponding.

[0011] The optical detection module structure of the gas alarm has the advantages that the structure is simple and stable, the stroke of gas detection is increased through the reflection of the first reflection part and the second reflection part, the accuracy of gas detection is improved, and the safe use of gas such as fuel gas by people is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structure schematic view of one perspective of the preferred embodiment provided by the utility model.

[0013] Figure 2 is a structure schematic view of another perspective of the preferred embodiment provided by the utility model.

[0014] Figure 3 is a structure schematic view of an explosion perspective of the preferred embodiment provided by the utility model.

[0015] Figure 4 is a structure schematic view of the first detection bin of the preferred embodiment provided by the utility model.

[0016] The reference signs comprise: 100, the first detection bin; 110, the first reflection part; 120, the second reflection part; 130, the first partition plate; 140, the first opening; 150, the first through port; 160, the first through hole; 170, the first hook; 200, the first circuit board; 210, the first hanging hole; 220, the first emission sensor; 230, the first receiving sensor; 240, the first heat dissipation plate; 241, the first grid bar. DETAILED DESCRIPTION

[0017] The utility model discloses a kind of optical detection module structure of gas alarm, below combining preferred embodiment, the specific implementation of the utility model is further described.

[0018] Referring to the Figures 1-4 , Figure 1 is a structure schematic view of one perspective of the preferred embodiment provided by the utility model, Figure 2is another perspective view of the preferred embodiment provided by the utility model, Figure 3 is the structure schematic diagram of the preferred embodiment provided by the utility model, Figure 4 is the structure schematic diagram of the first detection bin 100 of the preferred embodiment provided by the utility model.

[0019] Preferred embodiment.

[0020] The embodiment provides a gas alarm optical detection module structure, which comprises a first detection bin 100 and a first circuit board 200, the first detection bin 100 is arranged at the upper end of the first circuit board 200, the middle part of the first detection bin 100 is provided with a first partition plate 130, the left end of the first detection bin 100 is provided with a first reflection part 110, the first reflection part 110 is arranged vertically to the first circuit board 200 in a right angle shape, the bending part of the first reflection part 110 corresponds to the extension of the first partition plate 130, the right end of the first detection bin 100 is provided with a second reflection part 120, the second reflection part 120 is arranged in a 45-degree angle and inclines to the right and down, the first circuit board 200 is provided with a first emission sensor 220 and a first receiving sensor 230, the first emission sensor 220 and the first receiving sensor 230 are arranged below the second reflection part 120, the first emission sensor 220 corresponds to the rear end of the first partition plate 130, and the first receiving sensor 230 corresponds to the front end of the first partition plate 130.

[0021] Further, the right end of the first detection bin 100 is provided with a first through port 150, the upper end of the first detection bin 100 is provided with a first opening 140, and the first through port 150 and the first opening 140 are used for the entry of the detected gas in the first detection bin 100.

[0022] Further, the lower end of the first detection bin 100 is provided with a plurality of first through holes 160, the first through holes 160 are connected with the first circuit board 200, and the first through holes 160 are used for the entry of the detected gas in the first detection bin 100.

[0023] Further, the first circuit board 200 is provided with a first heat dissipation plate 240, the upper end of the first heat dissipation plate 240 is provided with a first grid strip 241, and the first emission sensor 220 is arranged on the first heat dissipation plate 240.

[0024] Further, the inner side of the first detection bin 100 is provided with a first electroplated layer, and the first electroplated layer is used for improving the reflectivity of the first detection bin 100.

[0025] Further, the lower end of the first detection bin 100 is provided with a plurality of first hooks 170, and the first circuit board 200 is provided with a plurality of first hanging holes 210, and the first hooks 170 correspond to the first hanging holes 210 one by one.

[0026] Working principle: the detection gas (mainly natural gas) can enter the first detection bin 100 through the first opening 140, and meanwhile, the entering and circulation of the detection gas can be accelerated through the first through hole 150 and the first through hole 160, so as to ensure higher detection accuracy. The signal generated by the first emission sensor 220 first passes through the rear side of the second reflection part 120, is reflected to the rear side of the first reflection part 110 through the reflection of the second reflection part 120, is reflected to the front side of the first reflection part 110 through the reflection of the rear side of the first reflection part 110, is reflected to the front side of the second reflection part 120 again through the reflection of the front side of the first reflection part 110, and finally is reflected to the first receiving sensor 230 through the reflection of the front side of the second reflection part 120. The signal emission of the first emission sensor 220 and the signal reception of the first receiving sensor 230 are used to calculate the concentration of the detection gas, so as to realize the alarm of the detection gas. Compared with the conventional gas detection module (the emission sensor and the receiving sensor are oppositely arranged in the conventional gas detection module, so the detection distance of the laser detection is short), the detection distance is doubled by increasing the detection distance through multiple reflections, so that the refraction of the detection gas can be ensured by the laser detection, and the detection accuracy can be improved. In addition, the reflectivity of the first detection bin 100 is improved by the first electroplated layer, that is, the loss of the laser detection is reduced, so that the detection accuracy can be ensured. Moreover, the first detection bin 100 can be fixed on the first circuit board 200 by hooking the first hooks 170 on the first hanging holes 210, so that the installation is convenient, fast, stable and reliable.

[0027] It is worth mentioning that the first emission sensor 220 and the first receiving sensor 230 and other technical features involved in the utility model patent application should be regarded as prior art, and the specific structure, working principle and possible control mode and spatial arrangement mode of these technical features can be selected by using the conventional selection in the field, and should not be regarded as the utility model point of the utility model patent, and the utility model patent will not be further expanded and described in detail.

[0028] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, and any modification, equivalent replacement, improvement and the like within the spirit and principles of the utility model should be included in the protection range of the utility model.

Claims

1. A gas alarm optical detection module structure, characterized in that: The invention comprises a first detection chamber (100) and a first circuit board (200), wherein the first detection chamber (100) is arranged at the upper end of the first circuit board (200), a first partition (130) is provided in the middle of the first detection chamber (100), a first reflecting portion (110) is provided at the left end of the first detection chamber (100), the first reflecting portion (110) is arranged perpendicular to the first circuit board (200) in a right angle, a bent portion of the first reflecting portion (110) corresponds to an extension of the first partition (130), and the first detection chamber (100) is provided with a first reflective portion (110). A second reflecting portion (120) is provided at the right end of the first partition (130), and the second reflecting portion (120) is tilted downward to the right at an angle of 45 degrees. A first transmitting sensor (220) and a first receiving sensor (230) are provided on the first circuit board (200), and the first transmitting sensor (220) and the first receiving sensor (230) are arranged below the second reflecting portion (120). The first transmitting sensor (220) corresponds to the rear end of the first partition (130), and the first receiving sensor (230) corresponds to the front end of the first partition (130).

2. The optical detection module structure of the gas alarm according to claim 1, characterized in that: A first through port (150) is provided at the right end of the first detection chamber (100), and a first opening (140) is provided at the upper end of the first detection chamber (100). Both the first through port (150) and the first opening (140) are used for the entry of detection gas into the first detection chamber (100).

3. The optical detection module structure of the gas alarm according to claim 2, characterized in that: A plurality of first through holes (160) are provided at the lower end of the first detection chamber (100), the first through holes (160) being connected to the first circuit board (200), and the first through holes (160) are used for detecting the entry of gas into the first detection chamber (100).

4. The optical detection module structure of the gas alarm according to claim 3, characterized in that: A first heat dissipation plate (240) is provided on the first circuit board (200), a first grid bar (241) is provided at the upper end of the first heat dissipation plate (240), and the first emission sensor (220) is arranged on the first heat dissipation plate (240).

5. The optical detection module structure of the gas alarm according to claim 4, characterized in that: A first electroplating layer is provided on the inner side of the first detection chamber (100), and the first electroplating layer is used to improve the reflectivity of the first detection chamber (100).

6. The optical detection module structure of the gas alarm according to claim 5, characterized in that: A plurality of first hooks (170) are provided at the lower end of the first detection chamber (100), and a plurality of first hanging holes (210) are provided on the first circuit board (200), and the first hooks (170) correspond to the first hanging holes (210) in a one-to-one manner.

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