Gas detector

Abstract

The utility model provides a gas detector, which comprises a shell assembly, a gas detector, a gas detector, a gas detector, a gas detector, a gas detector, a gas detector, a gas detector and a gas detector, and is characterized in that the shell assembly is provided with an accommodating cavity and a detection window; the detection assembly comprises a gas sensor and a main board, the gas sensor is arranged on the main board, the gas sensor and the main board are both located in the containing cavity, the detection end of the gas sensor extends out of the detection window, and the size of the detection window is matched with the size of the gas sensor; the panel is arranged on the side, where the detection window is located, of the shell assembly, the panel is provided with an air hole, the panel covers the gas sensor, and the air hole corresponds to the gas sensor. By adopting the scheme, the problem that dust is easily accumulated in the gas sensor and the mainboard in the prior art, so that the mainboard fails can be solved.

Description

Technical Field

[0001] This utility model relates to the field of gas detector technology, and more specifically, to a gas detector. Background Technology

[0002] In modern society, the use of combustible gases such as methane is becoming increasingly widespread, especially in homes and small businesses as an energy source for cooking, heating, and hot water. However, if a leak of combustible gases such as methane is not detected in time, it can cause serious accidents such as fires or explosions, resulting in significant property damage and personal injury. Therefore, timely monitoring and early warning of combustible gas leaks are of paramount importance.

[0003] Because traditional home methane gas detectors require external gas to enter the detection components to achieve the detection purpose, dust easily accumulates on the gas sensor and motherboard, which can lead to reduced accuracy of measurement results and even motherboard failure. Utility Model Content

[0004] This invention provides a gas detector to solve the problem in the prior art where dust easily accumulates inside the gas sensor and motherboard, leading to motherboard failure.

[0005] This utility model provides a gas detector, which includes: a housing assembly having a receiving cavity and a detection window, the detection window communicating with the receiving cavity; a detection assembly including a gas sensor and a main board, the gas sensor being mounted on the main board and both the gas sensor and the main board being located within the receiving cavity, the detection end of the gas sensor extending from the detection window, the size of the detection window being adapted to the size of the gas sensor; and a panel disposed on one side of the housing assembly where the detection window is located, the panel having a vent hole, the panel covering the gas sensor, and the vent hole allowing external gas to enter the gas sensor.

[0006] Furthermore, the housing assembly includes a front housing and a rear housing, which are detachably connected and form a receiving cavity between them. A detection window is provided on the front housing, and a panel is disposed on the front housing.

[0007] Furthermore, there is a snap-fit ​​structure between the panel and the front shell, and the panel is detachably connected to the front shell through the snap-fit ​​structure.

[0008] Furthermore, the snap-fit ​​structure includes: a connecting protrusion disposed on the side of the panel facing the front housing; and a slot disposed on the side of the front housing facing the panel, the slot having a guide section and a snap-fit ​​section communicating with each other, the connecting protrusion being able to move within the guide section and the snap-fit ​​section, the guide section being able to guide the connecting protrusion to move toward the snap-fit ​​section, and the connecting protrusion engaging with the snap-fit ​​section to fix the panel to the front housing.

[0009] Furthermore, a support structure is provided inside the front shell and / or rear shell, and the support structure abuts against the motherboard to fix the position of the motherboard in the receiving cavity.

[0010] Furthermore, the supporting structure includes at least one of supporting columns, supporting ribs, and supporting steps.

[0011] Furthermore, the gas detector also includes a mounting base, which is detachably disposed on the side of the housing assembly away from the panel, and is used to secure the housing assembly.

[0012] Furthermore, the gas detector also includes an indicator light and a buzzer, both of which are mounted on the housing assembly and are electrically connected to the main board.

[0013] Furthermore, the indicator light is located on the motherboard, and the gas detector also includes: a through hole, located on the panel; and a light guide, one end of which is corresponding to the indicator light, and the other end of which passes through the housing assembly and is located inside the through hole.

[0014] Furthermore, gas sensors include laser sensors.

[0015] The technical solution of this utility model includes a housing assembly with a receiving cavity and a detection window, wherein the detection window communicates with the receiving cavity, allowing external gas to enter the receiving cavity through the detection window and contact the gas sensor. The detection assembly mainly includes a gas sensor and a main board. The detection end of the gas sensor extends through the detection window, directly contacting the external environment to ensure accurate reception of external gas. The size of its protruding portion is adapted to the size of the detection window, reducing the amount of dust entering through the detection window and preventing excessive dust accumulation on the main board and gas sensor. A vent is provided on the panel, which covers the gas sensor. The panel is a detachable structure, fixed to one side of the detection window of the housing assembly, facilitating further maintenance and cleaning of the gas sensor. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 An exploded view of the gas detector provided by this utility model is shown;

[0018] Figure 2 A schematic diagram of the panel provided by this utility model is shown.

[0019] The above figures include the following reference numerals:

[0020] 10. Front shell;

[0021] 101. Detection window;

[0022] 11. Back cover;

[0023] 111. Mounting base;

[0024] 12. Connecting protrusions;

[0025] 13. Card slot;

[0026] 20. Motherboard;

[0027] 21. Gas sensor;

[0028] 30. Panel;

[0029] 31. Ventilation holes;

[0030] 32. Through hole;

[0031] 33. Light guide column;

[0032] 34. Indicator lights;

[0033] 35. Buzzer;

[0034] 36. Speaker window. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] like Figure 1 As shown, this embodiment of the present invention provides a gas detector, which includes a housing assembly, a detection assembly, and a panel 30. The housing assembly has a receiving cavity and a detection window 101, which communicates with the receiving cavity. The detection assembly includes a gas sensor 21 and a main board 20. The gas sensor 21 is mounted on the main board 20, and both the gas sensor 21 and the main board 20 are located within the receiving cavity. The detection end of the gas sensor 21 extends from the detection window 101, and the size of the detection window 101 is adapted to the size of the gas sensor 21. The panel 30 is located on the side of the housing assembly where the detection window 101 is located. The panel 30 has a vent 31, which covers the gas sensor 21, allowing external gas to enter the gas sensor 21.

[0037] Applying the technical solution of this utility model, the housing assembly has a receiving cavity and a detection window 101, wherein the detection window 101 communicates with the receiving cavity, and external gas enters the receiving cavity through the detection window 101 and comes into contact with the gas sensor 21. The detection assembly mainly includes the gas sensor 21 and the main board 20, wherein the detection end of the gas sensor 21 extends through the detection window 101 and directly contacts the external environment, ensuring that the gas sensor 21 can accurately receive external gas. The size of its extended part is adapted to the size of the detection window 101, which can reduce the amount of dust entering through the detection window 101 and prevent the main board 20 and the gas sensor 21 from accumulating a large amount of dust. The panel 30 is provided with vent holes 31, and the panel 30 covers the gas sensor 21. There are multiple vent holes 31, and the projection of the multiple vent holes 31 can fully cover the detection window 101 on the housing assembly, so that external gas can smoothly pass through the vent holes 31 and the detection window 101 to reach the interior of the gas sensor 21. The panel 30 is a detachable structure, fixed to one side of the detection window 101 of the housing assembly, which facilitates further maintenance and cleaning of the gas sensor 21.

[0038] When the gas detector is working, external gas enters the receiving cavity through the vent 31 on the panel 30 and comes into contact with the detection end of the gas sensor 21. Based on its specific detection principle, such as TD-LAS technology, the gas sensor 21 detects the gas concentration and transmits the detection signal through the motherboard 20 to the internal processing unit for analysis and processing. The processing unit determines whether the gas concentration in the environment exceeds a preset threshold based on the signal from the gas sensor 21. Once an abnormal gas concentration is detected, the gas detector will issue an alarm through the alarm device. Simultaneously, the alarm information can be sent to a remote control center or user's mobile phone via the communication module, enabling remote monitoring.

[0039] Specifically, the gas sensor 21 employs high-sensitivity and high-precision sensing technologies, such as tunable laser gas absorption spectroscopy (TD-LAS), which enables precise detection of specific gases, such as methane.

[0040] Furthermore, the housing assembly includes a front shell 10 and a rear shell 11, which are detachably connected, forming a receiving cavity between them. A detection window 101 is provided on the front shell 10, and a panel 30 is disposed on the front shell 10. In this embodiment, the housing assembly consists of two detachable parts: a front shell 10 and a rear shell 11, to facilitate maintenance and cleaning of the internal components. The detection window 101 on the front shell 10 corresponds to the position of the internal gas sensor 21, allowing the gas sensor 21 to detect gases in the environment through the window.

[0041] The front shell 10 and the rear shell 11 can be detachably connected by fasteners, snap-fit ​​structures, etc.

[0042] Furthermore, a snap-fit ​​structure is provided between the panel 30 and the front shell 10, allowing the panel 30 to be detachably connected to the front shell 10 via the snap-fit ​​structure. In this embodiment, the snap-fit ​​structure should be symmetrical on both sides to ensure the balance and stability of the panel 30 during installation. The snap-fit ​​structure can be set at the four corners or symmetrical positions of the panel 30 to distribute the force on the panel 30 and avoid damage to the panel 30 during disassembly.

[0043] Specifically, the clips can be made of elastic materials, such as spring steel or elastic plastic, to ensure that the clips provide sufficient elasticity and reliability during the installation and removal of panel 30.

[0044] Furthermore, the snap-fit ​​structure includes a connecting protrusion 12 and a slot 13. The connecting protrusion 12 is disposed on the side of the panel 30 facing the front housing 10, and the slot 13 is disposed on the side of the front housing 10 facing the panel 30. The slot 13 has a guide section and a snap-fit ​​section that communicate with each other. The connecting protrusion 12 can move within the guide section and the snap-fit ​​section. The guide section can guide the connecting protrusion 12 to move toward the snap-fit ​​section. The connecting protrusion 12 engages with the snap-fit ​​section to fix the panel 30 onto the front housing 10.

[0045] In this embodiment, the snap-fit ​​structure consists of connecting protrusions 12 and slots 13. Several connecting protrusions 12 are provided on the side of the panel 30 facing the front shell 10, while slots 13 matching the connecting protrusions 12 are provided on the side of the front shell 10 facing the panel 30. The slot 13 has two main parts: a guide section and a snap-fit ​​section. The guide section, part of the slot 13, can be configured as an inclined guide surface to guide the connecting protrusions 12 on the panel 30 to slide towards the snap-fit ​​section of the slot 13. The width of the guide section is typically slightly wider than the snap-fit ​​section to facilitate the initial positioning and sliding of the connecting protrusions 12. The width of the snap-fit ​​section is smaller than that of the guide section, but matches the width of the connecting protrusions 12. When the connecting protrusion 12 slides into the snap-fit ​​section, it is constrained by the sidewall of the snap-fit ​​section and locked in place, thus fixing the panel 30. The design of the snap-fit ​​section needs to ensure that the connecting protrusions 12 will not easily detach when the panel 30 is fixed, but can be relatively easily detached when disassembly is required.

[0046] Furthermore, a support structure is provided inside the front shell 10 and / or the rear shell 11. The support structure abuts against the motherboard 20 to fix the position of the motherboard 20 within the receiving cavity. In this embodiment, the support structure is located inside the front shell 10 and / or the rear shell 11, serving to limit the position of the motherboard 20. The support structure can be designed as multiple support points or support frames, distributed inside the front shell 10 and / or the rear shell 11 within the receiving cavity. Its position should ensure that the weight of the motherboard 20 is evenly distributed to avoid excessive force on the motherboard 20 at any one point, which could cause deformation.

[0047] Specifically, the materials for the support structure should be selected to be materials with high mechanical strength, corrosion resistance, and resistance to deformation, such as ABS plastic, metals such as aluminum or stainless steel, to ensure stable support of the motherboard 20 under various environmental conditions.

[0048] Furthermore, the support structure includes at least one of support columns, support ribs, and support steps. In this embodiment, the support structure can be one or a combination of support columns, support ribs, and support steps. The support column is cylindrical or other stable geometric shape, and its main function is to support the main board 20, ensuring the stability of the internal components of the equipment and preventing component displacement or damage due to vibration or equipment overturning.

[0049] Support ribs are reinforcing structures that connect different planes or components within a housing. Their shapes can be straight, curved, or complex to accommodate various internal layout requirements. Support ribs also increase the structural strength and rigidity of housing components and can serve as guide rails or limiting structures.

[0050] The support step is a stepped structure used to support and position motherboards 20 at different heights. The support step allows internal components to be stacked vertically in a limited space without affecting signal transmission and functionality between them, achieving miniaturization of the device and efficient use of internal space, and enhancing the portability and aesthetics of the device.

[0051] Furthermore, the gas detector also includes a mounting base 111, which is detachably disposed on the side of the housing assembly away from the panel 30. The mounting base 111 is used to fix the housing assembly. In this embodiment, a detachable mounting base 111 is provided to fix the housing assembly to a wall or other supporting structure, ensuring stable installation and convenient disassembly of the gas detector in various operating environments. The mounting base 111 is a flat plate 30 structure, equipped with multiple preset mounting holes or screw holes. Through these holes, the mounting base 111 can be easily fixed to the wall or other supporting structure using screws. The position and number of mounting holes are optimized according to the size and weight of the housing assembly to ensure the stability of the installation.

[0052] Furthermore, the gas detector also includes an indicator light 34 and a buzzer 35, both of which are mounted on the housing assembly and are electrically connected to the main board 20.

[0053] In this embodiment, the housing assembly includes indicator lights 34 and a buzzer 35. Indicator lights 34 typically include power status indicator lights, operating status indicator lights, and alarm status indicator lights. The indicator lights 34 are mounted on the housing assembly for easy observation of the device status by the user. The buzzer 35 is also located on the housing assembly, adjacent to the indicator lights 34, ensuring timely alarm sounding in case of abnormal gas concentration. The buzzer 35 is connected to the main board 20 via circuitry, and its operation is controlled by the main board 20. When the gas detector detects an abnormal gas concentration, the main board 20 sends an alarm signal to the buzzer 35, which then emits a high-frequency or adjustable-frequency warning sound. This sound is loud enough to be heard even in various ambient noise levels at home, effectively alerting the user.

[0054] Specifically, the front housing 10 is provided with a speaker window 36 corresponding to the buzzer 35. The size and distribution of the vent holes 31 are optimized so that the projection of multiple vent holes 31 can cover both the detection window 101 and the speaker window 36, thereby improving the detection efficiency of the gas sensor 21 and enhancing the warning effect of the buzzer 35.

[0055] Furthermore, indicator light 34 is mounted on the main board 20, and the gas detector also includes a through hole 32 and a light guide post 33. The through hole 32 is mounted on the panel 30. One end of the light guide post 33 corresponds to the indicator light 34, and the other end of the light guide post 33 passes through the housing assembly and is located within the through hole 32.

[0056] In this embodiment, the panel 30 is designed with through holes 32. When assembling the light guide post 33 with the indicator light 34 on the main board 20, it must be ensured that there are no gaps between them. To prevent the light guide post 33 from shifting during installation and use, the housing assembly should have a light guide post 33 fixing device inside, such as a guide groove or a buckle, to ensure the stable positioning of the light guide post 33 in all directions. Figure 2 As shown, the light guide post 33 is fixed to the panel 30 using a snap-fit ​​structure, which ensures the stability of the light guide post 33, maintains efficient light transmission, and facilitates disassembly and maintenance. During the assembly of the housing assembly, the light guide post 33 needs to pass through the internal structure of the housing assembly and be precisely aligned with the through hole 32 on the panel 30.

[0057] Specifically, the position and size of the through hole 32 need to be precisely calculated to ensure that it corresponds to the indicator light 34 on the motherboard 20, while ensuring the sealing of the edge of the through hole 32 to prevent dust, moisture or other external factors from affecting the normal operation and service life of the indicator light 34.

[0058] The design and assembly of the light guide post 33 is a key part of this embodiment. The light guide post 33 is made of a high-transparency material, such as PMMA (polymethyl methacrylate) or PC (polycarbonate), to ensure efficient light transmission. One end of the light guide post 33 is designed as a flat surface, making close contact with the indicator light 34 on the main board 20, while the other end is designed as a diffuser end, which can diffuse the concentrated light, increase the coverage of the light within the through hole 32, and make the light from the indicator light 34 pass through the through hole 32 more evenly, thus enhancing the visibility.

[0059] Furthermore, the gas sensor 21 includes a laser sensor. In this embodiment, the laser sensor includes a laser source that emits laser light and a detector that receives reflected or transmitted laser light.

[0060] Specifically, the laser source employs a highly stable laser diode capable of emitting laser light at a specific wavelength that matches the absorption peak of the gas being measured, thereby achieving highly sensitive detection of the gas. The detector is typically a photodiode or avalanche photodiode, used to receive the laser light passing through or reflected from the gas and convert it into an electrical signal for subsequent signal processing and analysis.

[0061] Therefore, by utilizing the high precision and stability of laser sensors, the gas concentration in the environment can be effectively detected. At the same time, through optimized optical path design and maintenance cleaning structure, the long-term stability and detection accuracy of the equipment are guaranteed, making it suitable for various occasions requiring high-precision gas detection.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0064] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0065] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas detector, characterized in that The gas detector comprises: a housing assembly having a containing cavity and a detection window (101) in communication with the containing cavity; a detection assembly comprising a gas sensor (21) and a main board (20), the gas sensor (21) being arranged on the main board (20), the gas sensor (21) and the main board (20) being located in the containing cavity, a detection end of the gas sensor (21) extending out of the detection window (101), the detection window (101) being sized to match the size of the gas sensor (21); a panel (30) arranged on a side of the housing assembly where the detection window (101) is located, the panel (30) having a gas-permeable hole (31), the panel (30) covering the gas sensor (21), and the gas-permeable hole (31) allowing external gas to enter the gas sensor (21).

2. A gas detector according to claim 1, characterised in that The housing assembly comprises: a front shell (10) and a rear shell (11), the front shell (10) being detachably connected with the rear shell (11), the containing cavity being formed between the front shell (10) and the rear shell (11), the detection window (101) being arranged on the front shell (10), and the panel (30) being arranged on the front shell (10).

3. A gas detector according to claim 2, characterised in that The panel (30) and the front shell (10) have a snap structure, and the panel (30) is detachably connected with the front shell (10) through the snap structure.

4. A gas detector according to claim 3, characterised in that The snap structure comprises: a connecting protrusion (12) arranged on a side of the panel (30) facing the front shell (10); a clamping groove (13) arranged on a side of the front shell (10) facing the panel (30), the clamping groove (13) having a guiding section and a clamping section in communication with each other, the connecting protrusion (12) being movable in the guiding section and the clamping section, the guiding section being capable of guiding the connecting protrusion (12) to move towards the clamping section, and the connecting protrusion (12) being clamped and matched with the clamping section to fix the panel (30) on the front shell (10).

5. A gas detector according to claim 2, wherein The front shell (10) and / or the rear shell (11) is / are provided with a support structure, the support structure being in abutment with the main board (20) to fix the position of the main board (20) in the containing cavity.

6. A gas detector according to claim 5, characterised in that The support structure comprises at least one of a support column, a support rib and a support step.

7. The gas detector of claim 1, wherein, The gas detector further comprises a mounting seat (111) detachably arranged on a side of the housing assembly away from the panel (30), the mounting seat (111) being used for fixing the housing assembly.

8. The gas detector of claim 1, wherein, The gas detector further comprises an indicating lamp (34) and a buzzer, the indicating lamp (34) and the buzzer being arranged on the housing assembly and electrically connected with the main board (20).

9. A gas detector according to claim 8, characterised in that, The indicating lamp (34) is arranged on the main board (20), and the gas detector further comprises: a through hole (32) arranged on the panel (30). A light guide column (33) is arranged at one end corresponding to the indicator light (34), and the other end of the light guide column (33) passes through the shell assembly and is located in the through hole (32).

10. A gas detector according to claim 1, characterised in that The gas sensor (21) comprises a laser sensor.

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