Gas detection device

Abstract

This application provides a gas detection device, including a housing, a first structural member, a second structural member, a gas detection component, and a control component. The first structural member is at least partially disposed within the housing, and the first structural member and the housing enclose a gas channel and a receiving cavity. At least one of the housing and the first structural member forms an air inlet, which communicates with the gas channel. The first structural member also forms a communication port. The second structural member is disposed within the receiving cavity, and the second structural member and the first structural member enclose a detection chamber. The communication port connects the detection chamber to the gas channel. The housing forms an air outlet, which communicates with the detection chamber. The gas detection component is disposed within the receiving cavity. The control component is disposed within the receiving cavity and is electrically connected to the gas detection component. The technical solution of this application aims to reduce the size of the gas detection device and achieve miniaturization.

Description

Technical Field

[0001] This application relates to the field of gas detection technology, and more particularly to a gas detection device. Background Technology

[0002] Breathalyzers detect the concentration of one or more components in exhaled breath and are now widely used in health checks. For example, for smokers, a carbon monoxide breathalyzer can detect the concentration of carbon monoxide in exhaled breath, thus assessing the smoker's smoking status and serving as a health warning. However, existing breathalyzers are typically large, limiting their use to single scenarios such as hospitals or homes, making them inconvenient to carry around for breath testing. Summary of the Invention

[0003] This application provides a gas detection device, which aims to reduce the size of the gas detection device and achieve miniaturization.

[0004] This application provides a gas detection device, including: case; A first structural member is at least partially disposed within the housing. The first structural member and the housing together form a gas channel and a receiving cavity. At least one of the housing and the first structural member forms an air inlet. The air inlet communicates with the gas channel. The first structural member forms a communication port. A second structural member is disposed in the receiving cavity. The second structural member and the first structural member enclose a detection chamber. The communication port connects the detection chamber with the gas channel. The housing forms an air outlet, which is connected to the detection chamber. A gas detection component is disposed in the receiving cavity and is used to detect the gas in the detection cavity; A control component, located in the receiving cavity and electrically connected to the gas detection component, is used to control the gas detection component to detect the gas in the detection chamber.

[0005] Optionally, the first structural member and the second structural member are snapped together.

[0006] Optionally, the first structural member is provided with a slot, and the bottom surface of the slot is provided with a communication port; the second structural member includes an extension portion, which is engaged with the slot, and the extension portion and the bottom surface of the slot together form the detection chamber.

[0007] Optionally, the second structural member includes an extension and a mounting portion, the extension and the first structural member enclosing the detection chamber, the gas detection assembly being disposed on the extension, and the mounting portion being disposed on the first structural member and connected to the outer periphery of the mounting portion; the gas detection device further includes a functional component, the functional component being mounted on the mounting portion.

[0008] Optionally, the control component is located on the side of the second structure facing the first structure.

[0009] Optionally, the mounting portion is located on one side of the extension portion, and the side of the extension portion away from the mounting portion has a clearance opening, which communicates with the detection chamber; the control component includes a circuit board, which includes a first region, a second region, and a third region. The first region is located on the side of the mounting portion facing the second structure, the second region is wrapped around the outer periphery of the mounting portion and connected to the first region, one end of the third region passes through the clearance opening and is connected to the second region, and the other end of the third region is located in the detection chamber and is electrically connected to the gas detection component.

[0010] Optionally, the gas detection device further includes a power supply component, which is disposed on the first structural member and located on the outer periphery of the extension, and is electrically connected to the control component.

[0011] Optionally, the gas detection device includes a guide member disposed in the gas channel.

[0012] Optionally, the opposite sides of the guide are connected to the housing and the first structural member, respectively.

[0013] Optionally, the guide divides the gas channel into multiple sub-channels; the first structural member is provided with multiple connecting ports; any one of the sub-channels is connected to the detection chamber through at least one connecting port.

[0014] Optionally, the guide includes a first extension and a second extension, the first extension being connected to the second extension and bent relative to the second extension.

[0015] Optionally, the first structural member forms a plurality of connecting ports, which are arranged circumferentially and respectively connect to the edge of the detection chamber.

[0016] Optionally, the housing includes: First shell; The second housing is separate from the first housing, and the second housing is connected to the first housing; The first structural member is located between the first housing and the second housing, and the first structural member and the first housing enclose the gas channel, and at least the first structural member and the second housing enclose the receiving cavity.

[0017] Optionally, the gas detection device further includes a display screen, which is located on the side of the receiving cavity away from the gas channel and passes through the housing, and the display screen is electrically connected to the control component; The gas channel includes an intake channel and a transmission channel. The intake channel connects the intake port and the transmission channel, and the intake channel is bent relative to the transmission channel toward the display screen.

[0018] This application provides a gas detection device. A gas channel is formed by a first structural member and a housing, and the gas channel is connected to an air inlet. A detection chamber is formed by a second structural member and the first structural member, and the detection chamber is connected to the gas channel. The detection chamber is connected to the external environment through a first air outlet, allowing the user to exhale gas into the air inlet. The gas enters the gas channel from the air inlet and is then transmitted to the detection chamber. The gas detection component can detect the gas in the detection chamber to determine information such as gas composition and gas concentration. Finally, the gas in the detection chamber can be transmitted to the outside of the gas detection device from the air outlet. The gas channel is formed by the housing and the first structural member, and the detection chamber is formed by the first and second structural members. This not only facilitates the formation of the gas channel and the detection chamber and the installation of the gas detection component, but also achieves structural sharing, making the structure of the gas detection device more compact and reducing its size, thus achieving miniaturization. Furthermore, the placement and structure of the gas channel are more flexible, allowing for more flexible placement of the detection chamber. Overall, this is more conducive to the layout design of the gas detection device, further achieving miniaturization. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a gas detection device provided in an embodiment of this application; Figure 2 A half-sectional view of a gas detection device provided in an embodiment of this application; Figure 3 This is an exploded view of a gas detection device provided in an embodiment of this application; Figure 4This is an exploded view of a gas detection device provided in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of a first structural member provided in an embodiment of this application; Figure 6 This is a schematic diagram of a circuit board and a second structural component provided in an embodiment of this application.

[0021] Explanation of key figure labels: 10. Housing; 11. First housing; 12. Second housing; 101. Gas passage; 1011. Inlet passage; 1012. Transmission passage; 10121. Sub-channel; 102. Receiving cavity; 103. Outlet; 104. Second through hole; 105. Ventilation hole; 20. First structural component; 201. Inlet; 202. Connecting port; 203. Slot; 204. First through hole; 21. Main body; 22. Nozzle; 30. Second structural component; 31. Extension; 3101. Clearance opening; 3102. First opening; 311, contact surface; 32, mounting part; 321, spring arm; 301, detection chamber; 40, gas detection component; 50, control component; 51, circuit board; 5101, clearance hole; 511, first area; 512, second area; 513, third area; 52, switch; 53, temperature and humidity sensor; 54, interface; 60, seal; 70, functional component; 71, display screen; 72, button; 80, power supply component; 90, guide; 91, first extension section; 92, second extension section. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0024] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Please refer to Figures 1 to 4 This application provides a gas detection device, which includes a housing 10, a first structural member 20, a second structural member 30, a gas detection component 40, and a control component 50. The first structural member 20 is at least partially disposed within the housing 10, and the first structural member 20 and the housing 10 enclose a gas channel 101 and a receiving cavity 102. At least one of the housing 10 and the first structural member 20 forms an air inlet 201, which communicates with the gas channel 101. The first structural member 20 forms a communication port 202. The second structural member 30 is disposed in the receiving cavity 102, and the second structural member 30 and the first structural member 20 enclose a detection chamber 301. The communication port 202 connects the detection chamber 301 and the gas channel 101. The housing 10 forms an air outlet 103, which communicates with the detection chamber 301. The gas detection component 40 is disposed in the receiving cavity 102 and is used to detect the gas within the detection chamber 301. The control component 50 is located in the receiving cavity 102 and is electrically connected to the gas detection component 40. The control component 50 is used to control the gas detection component 40 to detect the gas in the detection chamber 301.

[0027] Understandably, the air inlet 201 connects the gas channel 101 to the external environment, the connecting port 202 connects the detection chamber 301 to the gas channel 101, and the air outlet 103 connects the external environment to the detection chamber 301. The user exhales gas into the gas channel 101 through the air inlet 201. The gas enters the gas channel 101 and is then transmitted to the connecting port 202, and then to the detection chamber 301 through the connecting port 202. Finally, it is discharged from the gas detection device through the air outlet 103. The control component 50 can control the gas detection component 40 to detect the gas in the detection chamber 301 and can determine the gas composition, the concentration of a certain component in the gas, and other information based on the detection results of the gas detection component 40.

[0028] After passing through the gas channel 101, the gas is transmitted to the detection chamber 301 through the connecting port 202. This helps to filter water vapor and impurities in the gas through the gas channel 101, reducing the interference of the gas on the detection results of the gas detection component 40 and improving the detection accuracy.

[0029] A gas channel 101 is formed by the enclosure of the housing 10 and the first structural member 20. The first structural member 20 and the second structural member 30 enclose the detection chamber 301, facilitating the formation of the gas channel 101 and the detection chamber 301. This shared structure makes the gas detection device more compact, reducing its size and enabling miniaturization. The second structural member 30, the gas detection component 40, and the control component 50 are housed in the receiving cavity 102. The second structural member 30 and the first structural member 20 enclose the detection chamber 301. These components guide the gas flow and prevent gas diffusion to the control component 50 and other electronic components, reducing interference. Furthermore, the placement of the detection chamber 301 and the connecting port 202 is flexible, further facilitating the layout design of the gas detection device and enabling miniaturization.

[0030] The receiving cavity 102 is located on one side of the gas flow channel along the Z direction, that is, the detection chamber 301 is located on one side of the gas flow channel along the Z direction. The gas flow channel is connected to the air inlet 201 on one side along the X direction. When the gas is transmitted to the connecting port 202, it needs to change its flow direction before being transmitted to the detection chamber 301. This can slow down the gas flow rate, reduce the impact of the gas on the gas detection component 40, extend the service life of the gas detection component 40, and improve the detection accuracy of the gas detection component 40.

[0031] For example, such as Figure 2 As shown, the first structural member 20 includes a mouthpiece 22, which can at least partially extend out of the housing 10. The mouthpiece 22 forms an air inlet channel 1011 and an air inlet 201 of the gas passage 101. The air inlet channel 1011 and the air inlet 201 are connected, and the user can blow air into the gas passage 101 through the mouthpiece 22. Alternatively, the housing 10 includes a mouthpiece 22, which forms an air inlet channel 1011 and an air inlet 201 of the gas passage 101. The air inlet channel 1011 and the air inlet 201 are connected, and the user can blow air into the gas passage 101 through the mouthpiece 22. Alternatively, the first structural member 20 and the housing 10 may enclose each other to form an air inlet 201.

[0032] For example, there may be one or more air outlets 103.

[0033] like Figure 3 and Figure 4As shown, in some embodiments, the housing 10 includes a first housing 11 and a second housing 12, which are separately disposed. A first structural member 20 is located between the first housing 11 and the second housing 12. The first structural member 20 and the first housing 11 enclose a gas channel 101, and the first structural member 20 and the second housing 12 enclose a receiving cavity 102. It is understood that the separate disposal of the first housing 11 and the second housing 12 facilitates the placement of at least part of the first structural member 20 within the housing 10, and facilitates the installation of the second structural member 30, the gas sensor, and the control assembly 50 in the receiving cavity 102, reducing the assembly difficulty of the housing 10.

[0034] For example, the first housing 11, the first structural frame, and the second housing 12 enclose a receiving cavity 102, and the first housing 11 and the second housing 12 may enclose an air outlet 103. Alternatively, the first housing 11 may form an air outlet 103. Or, the second housing 12 may form an air outlet 103, as... Figure 1 and Figure 4 As shown.

[0035] In some embodiments, the gas detection device may be equipped with a disposable air tube. Users can insert an unused air tube into the air inlet 201 and then blow air into the gas channel 101 through the air tube to perform gas detection. After the user finishes blowing air, the air tube can be pulled out and discarded.

[0036] Furthermore, the blowing tube can be filled with absorbent material to absorb the saliva or moisture carried in the user's exhaled air, thereby reducing the moisture inside the gas detection device and extending its service life.

[0037] For example, the blowing tube can be a paper tube or a plastic tube, and the absorbent material can be absorbent cotton or absorbent fiber.

[0038] For example, the first structural member 20 and the housing 10 can be fastened together by fasteners, or the first structural member 20 can be snapped onto the housing 10, or the first structural member 20 can be glued to the housing 10.

[0039] like Figure 2 and Figure 4 As shown, in some embodiments, a sealing member 60 is provided between the first structural member 20 and the housing 10. The first structural member 20 and the housing 10 are sealed together and enclosed to form a gas channel 101, which reduces the probability of gas leakage from the gap between the first structural member and the housing 10, prevents gas from being transmitted to the location of the control component 50 and other electronic components in the receiving cavity 102, and reduces the probability of the control component 50 and other electronic components being damaged by gas interference.

[0040] For example, the seal 60 may be made of an elastic material such as silicone or rubber.

[0041] like Figure 2 As shown, in some embodiments, the first structural member 20 and the second structural member 30 are snapped together, which helps to improve the connection stability between the first structural member 20 and the second structural member 30, and also reduces gas leakage between the first structural member 20 and the second structural member 30, thereby preventing gas from being transmitted to the control component 50 and other electronic components, and reducing the probability of the control component 50 and other electronic components being damaged by gas interference.

[0042] like Figure 2 and Figure 3 As shown, the first structural member 20 further includes a slot 203, the bottom surface of which has a connecting port 202. The second structural member 30 includes an extension 31, which engages with the slot 203. The extension 31 and the bottom surface of the slot together form a detection chamber 301, and the connecting port 202 connects the detection chamber 301 and the gas channel 101. It can be understood that the slot 203 in the first structural member 20 allows for a thinner first structural member 20, facilitating the transfer of gas from the gas channel 101 to the detection chamber 301 via the connecting port 202. Simultaneously, it makes the first and second structural members 20 more compact, reducing the size of the gas detection device and achieving a miniaturized design.

[0043] Specifically, the extension 31 extends toward the first structural member 20, and the extension 31 can partially extend into the slot 203 and engage with the slot 203.

[0044] For example, the connection port 202 can be one or more.

[0045] like Figure 3 and Figure 4 As shown, in some embodiments, the first structural member 20 forms a plurality of connecting ports 202, which are arranged circumferentially at intervals. The plurality of connecting ports 202 are respectively connected to the edge of the detection chamber 301, so as to facilitate the diffusion of gas in the detection chamber 301, so that the gas is evenly distributed in the detection chamber 301, thereby improving the detection accuracy of the gas detection component 40 and improving the accuracy of the calculation results of the control component 50.

[0046] like Figure 2 As shown, in some embodiments, the gas detection component 40 is disposed on the extension 31. At least the detection end of the gas detection component 40 is located in the detection chamber 301, so that the gas detection component 40 can detect the gas in the detection chamber 301.

[0047] Furthermore, the gas detection component 40 is located on the side of the extension 31 away from the first structural member 20, and the gas detection component 40 can be arranged opposite to the communication port 202, so that after the gas is transmitted from the communication port 202 to the detection chamber 301, the gas is transmitted toward the gas detection component 40, and the gas detection component 40 can detect the gas to be tested, thereby improving the detection accuracy of the gas detection equipment.

[0048] For example, such as Figure 2 As shown, one end of the extension 31 is snapped into the first structural member 20, and the other end of the extension 31 has a first opening 3102. The outer periphery of the first opening 3102 is the contact surface 311 of the extension 31 facing away from the inlet of the flow channel. The gas detection component 40 can abut against the contact surface 311. The detection end of the gas detection component 40 faces the first opening 3102, and the detection end can even pass through the first opening 3102 and be located in the detection chamber 301, so that the detection end of the gas detection component 40 is arranged opposite to the communication port 202, and the detection end of the gas detection component 40 can detect the gas in the detection chamber 301.

[0049] like Figures 2 to 4 As shown, in some embodiments, the second structural member 30 includes an extension 31 and a mounting portion 32. The extension 31 and the first structural member 20 enclose a detection chamber 301. A gas detection component 40 is disposed on the extension 31, and the mounting portion 32 is disposed on the first structural member 20 and connected to the outer periphery of the mounting portion 32. The gas detection device also includes a functional component 70, which is mounted on the mounting portion 32. It is understood that the mounting portion 32 is disposed on the outer periphery of the extension 31, allowing the extension 31 to be indirectly connected to the first structural member 20 via the mounting portion 32, thus improving the stability of the extension 31. Simultaneously, the mounting portion 32 is also used to mount the functional component 70, improving the utilization rate of the mounting portion 32. This results in a compact gas detection device structure, which helps reduce the size of the gas detection device and achieve miniaturization.

[0050] For example, functional component 70 may be a display screen 71, button 72, etc.

[0051] For example, the functional component includes a display screen 71, which is located on the side of the mounting portion 32 away from the first structural member 20 and passes through the housing 10, making the display screen 71 exposed. The display screen 71 is electrically connected to the control component 50 and can display corresponding information under the control of the control component 50. For example, the display screen 71 can display instruction information, instructing the user to blow air, and display the detection results of the gas sensor.

[0052] For example, the outer periphery of the mounting part 32 has a spring arm 321, and the functional components include a button 72. The button 72 is disposed on the spring arm 321 and passes through the housing 10. The control component 50 includes a circuit board 51 and a switch 52. The switch 52 is disposed on the side of the spring arm 321 away from the button 72 and is electrically connected to the circuit board 51. The button 72 can drive the spring arm 321 to trigger the switch 52 under the action of external force. The circuit board 51 can perform corresponding control when the switch 52 is triggered.

[0053] Specifically, the mounting section 32 can be adapted to the installation of various functional components, reducing the number of parts and facilitating assembly.

[0054] like Figure 2 and Figure 3 As shown, in some embodiments, the mounting portion 32 is disposed on the outer periphery of the extension portion 31. One end of the mounting portion 32 can be connected to the first structural member 20, and the other end of the mounting portion 32 can overlap the end face of the extension portion 31 away from the first structural member 20, so as to improve the stability of the mounting portion 32 and the extension portion 31, so that the mounting portion 32 can stably mount the functional component 70, and the extension portion 31 can fit against the first structural member 20 to form a detection chamber 301 together with the first structural member 20. Exemplarily, the mounting portion 32 and the extension portion 31 can be integrally provided.

[0055] like Figure 2 As shown, in some embodiments, the control component 50 is located on the side of the second structural member 30 facing the first structural member 20, so that the mounting part 32 is closer to the edge of the receiving cavity 102. The mounting part 32 can reserve more mounting positions to install the functional components 70 that need to pass through the housing 10, while also helping to make the structure of the gas detection device compact and achieve miniaturization.

[0056] For example, the control component 50 includes a circuit board 51, which is at least partially located on the side of the mounting portion 32 facing the first structural member 20. Fasteners can pass through the mounting portion 32, the circuit board 51 and the first structural member 20 to securely connect the second structural member 30, the circuit board 51 and the first structural member 20, thereby simplifying the connection structure of the second structural member 30, the circuit board 51 and the first structural member 20.

[0057] like Figures 2 to 5 As shown, in some embodiments, the outer periphery of the extension 31 has a clearance opening 3101, which communicates with the detection chamber 301. The control component 50 includes a circuit board 51, which is located on the side of the second structural member 30 facing the first structural member 20. A portion of the circuit board 51 can pass through the clearance opening 3101 and be located in the detection chamber 301, so that the circuit board 51 is electrically connected to the working electrode of the detection end of the gas sensor.

[0058] For example, taking the gas detection component 40 including a carbon monoxide sensor as an example, some of the working electrode pins of the carbon monoxide sensor are located at the detection end. By making the circuit board 51 partially pass through the clearance opening 3101 and located in the detection chamber 301, it is more convenient for the working electrode pins to be electrically connected to the circuit board 51, so that the circuit board 51 can obtain the micro current emitted by the working electrode and calculate the concentration of carbon monoxide in the gas based on the micro current.

[0059] like Figure 2 and Figure 6 As shown, the mounting portion 32 is located on one side of the extension portion 31. The side of the extension portion 31 away from the mounting portion 32 has a clearance opening 3101, which communicates with the detection chamber 301. The control assembly 50 includes a circuit board 51, which includes a first region 511, a second region 512, and a third region 513. The first region 511 is located on the side of the mounting portion 32 facing the second structure. The second region 512 is arranged around the outer periphery of the mounting portion 32 and connected to the first region 511. One end of the third region 513 passes through the clearance opening 3101 and is connected to the second region 512. The other end is located in the detection chamber 301 and is electrically connected to the gas detection assembly 40. Thus, the clearance opening 5101 is away from the first region 511 of the circuit board 51 and the mounting portion 32 to reduce the amount of gas transmitted from the detection chamber 301 through the clearance opening 5101 to the location of the control assembly 50 and other electronic components, thereby reducing interference to the control assembly 50 and other electronic components.

[0060] For example Figure 2 and Figure 6 As shown, the mounting portion 32 is located on one side of the extension portion 31 along the X direction, which is perpendicular to the arrangement direction of the gas channel 101 and the receiving cavity 102. The side of the extension portion 31 away from the mounting portion 32 has a clearance opening 3101. The second region 512 of the circuit board 51 is wrapped around the outer periphery of the mounting portion 32 so that the third region 513 extends into the detection chamber 301 through the clearance opening 5101.

[0061] like Figure 2 and Figure 6 As shown, further, the circuit board 51 has a clearance hole 5101, and the extension 31 can pass through the clearance hole 5101 and extend toward the first structural member 20, so that the first structural member 20 and the extension 31 enclose to form a detection chamber 301. The clearance opening 3101 of the extension 31 penetrates the side of the extension 31 toward the first structural member 20, so that when the extension 31 passes through the clearance hole 5101 to enclose the detection chamber 301 with the first structural member 20, the third region 513 of the circuit board 51 passes through the clearance opening 3101 and is located in the detection chamber 301.

[0062] In some embodiments, the extension 31 is snapped into the slot 203 of the first structural member 20, which can partially block the avoidance opening 3101, further reducing the gas leaking from the detection chamber 301 to the location of the control component 50 and other electronic components, and reducing the interference to the control component 50 and other electronic components.

[0063] like Figure 2 and Figure 4 As shown, in some embodiments, the control component 50 includes a circuit board 51, and the gas detection device further includes a temperature and humidity sensor 53. The temperature and humidity sensor 53 is disposed on the side of the circuit board 51 facing the first structural member 20. The first structural member 20 has a first through hole 204 corresponding to the temperature and humidity sensor 53, and the housing 10 has a second through hole 104 corresponding to the first through hole 204. The temperature and humidity sensor 53 can detect the temperature and humidity of the external environment through the first through hole 204 and the second through hole 104, so that the control component 50 can obtain the detection results of the temperature and humidity sensor 53, and calculate the concentration of a certain component in the gas by combining the detection results of the temperature and humidity sensor 53 and the detection results of the gas detection component 40, thereby improving the detection accuracy of the gas detection device.

[0064] Furthermore, such as Figure 3 As shown, the first structural component 20 also has an annular boss, which is arranged around the outer periphery of the first through hole 204. The temperature sensor can be located inside the annular boss and correspond to the first through hole 204. The control component 50 can abut against the annular boss to close the annular boss and prevent the gas in the gas channel 101 from being transmitted through the first through hole 204 to the location of other electronic components, thereby reducing interference to other electronic components and other components of the control component 50.

[0065] like Figures 2 to 4 As shown, in some embodiments, the gas detection device further includes a power supply component 80, which is electrically connected to the control component 50.

[0066] Furthermore, the power supply component 80 is disposed on the first structural member 20 and located on the outer periphery of the extension 31. Understandably, the power supply component 80 is relatively large. By placing the control component 50 on the side of the second structural member 30 facing the first structural member 20, and the power supply component 80 on the side of the mounting portion 32 away from the extension 31, the arrangement of the second structural member 30, the control component 50, and the power supply component 80 is more compact, which is beneficial for achieving miniaturization of the gas detection device and facilitates electrical connection between the control component 50 and the power supply component 80.

[0067] For example, the positions of the second structural member 30 and the power supply assembly 80 can be adjusted according to the shape and size of the first structural member 20.

[0068] For example, Figure 2 As shown, the power supply component 80 is located on the side of the mounting portion 32 away from the extension portion 31, which helps to keep the power supply component 80 away from the detection chamber 301 and reduce the interference of gas on the power supply component 80.

[0069] For example, the power supply component 80 may include one or more batteries.

[0070] In some embodiments, the gas detection device further includes an interface 54, which may be disposed on the side of the circuit board 51 facing the second structural member 30 and passing through the housing 10. The interface 54 may be plugged into an external data cable.

[0071] like Figure 2 As shown, in some embodiments, the second structural member 30 includes a mounting portion 32 and an extension portion 31. The gas detection component 40 is mounted on the mounting portion 32, and the extension portion 31 is located on one side of the mounting portion 32 along the X direction. The control component 50 includes a circuit board 51, which is at least partially located on the side of the extension portion 31 facing the first structural member 20. The gas detection device also includes a power supply component 80, which is disposed on the first structural member 20 and located on the side of the extension portion 31 and the circuit board 51 away from the mounting portion 32. The housing 10 has an air inlet 201 and an air outlet 103 on opposite sides along the X direction, respectively. The air outlet 103 is located on the side where the gas detection component 40 and the mounting portion 32 are located, and the communication port 202 is close to the air outlet 103. This makes the structure inside the cavity 102 compact, and the distance between the air inlet 201 and the connecting port 202 is relatively large, which helps to extend the gas channel 101, slow down the gas flow rate, reduce the impact force of the gas on the gas detection component 40, and help the water vapor in the gas to settle, reduce the interference of water vapor on the gas detection component 40, and improve the detection accuracy of the gas detection component 40.

[0072] In some embodiments, the gas detection device includes a guide 90 disposed in the gas channel 101. The guide 90 is used to guide the gas flow, which helps to make the gas distribution uniform, and at the same time, the guide 90 can also act as a blockage to slow down the gas flow rate.

[0073] In some embodiments, the opposite sides of the guide 90 are connected to the housing 10 and the first structural member 20, respectively. This helps to improve the guiding effect of the guide 90, while the guide 90 can also play a supporting role, increasing the strength of the first structural member 20 and reducing the deformation of the first structural member 20 under stress, which would affect the formation of the gas channel 101.

[0074] For example, the guide 90 and the first structural member 20 are integrally formed, with the other end of the guide 90 abutting against the housing 10. Alternatively, the guide 90 and the housing 10 can be integrally formed, with the other end of the guide 90 abutting against the first structural member 20. Or, the opposite ends of the guide 90 can be connected to the first structural member 20 and the first housing 11 by heat fusion, snap-fit, or adhesive bonding.

[0075] In some embodiments, the guide 90 divides the gas channel 101 into multiple sub-channels 10121. The first structural member 20 is provided with multiple connecting ports 202. Any sub-channel 10121 is connected to the detection chamber 301 through at least one connecting port 202. The guide 90 can guide the gas to the multiple sub-channels 10121, and the gas is transmitted to the detection chamber from the multiple connecting ports 202, thereby making the gas enter the detection chamber 301 more evenly and distribute it evenly within the detection chamber 301, improving the detection accuracy of the gas detection assembly 40.

[0076] For example, there may be one or more bootloaders 90.

[0077] For example, the gas passage 101 includes an intake passage 1011 and a transmission passage 1012. The intake passage 1011 connects the intake port 201 and the transmission passage 1012. The guide 90 divides the transmission passage 1012 into a sub-channel 10121.

[0078] In some embodiments, the guide 90 includes a first extension 91 and a second extension 92. The second extension 92 is closer to the air inlet 201 than the first extension 91. The first extension 91 is connected to the second extension 92 and bent relative to the second extension 92. It is understood that the bending of the guide 90 guides the gas, changing its flow direction and consuming its kinetic energy, thereby slowing down the gas flow rate. This helps reduce the impact of the gas on the gas detection component 40, extends the service life of the gas detection component 40, and improves the detection accuracy of the gas detection component 40.

[0079] like Figure 3 As shown, in some embodiments, the housing 10 has a vent 105 that connects to the external environment and the gas channel 101, allowing water vapor to escape from the gas detection device. For example, the vent 105 is positioned close to the guide member 90, causing water vapor in the gas to precipitate when obstructed by the guide member 90, allowing the water vapor to escape from the vent 105 adjacent to the guide member 90, thus reducing residual water vapor inside the gas detection device.

[0080] In some embodiments, the gas detection device further includes a display screen 71. The display screen 71 is located on the side of the receiving cavity 102 away from the gas channel 101 and passes through the housing 10, so that the display screen 71 is exposed. The display screen 71 is electrically connected to the control component 50 and can display corresponding information under the control of the control component 50. The gas channel 101 includes an inlet channel 1011 and a transmission channel 1012. The inlet channel 1011 connects the inlet 201 and the transmission channel 1012. The inlet channel 1011 is bent relative to the transmission channel 1012 toward the display screen 71, that is, the inlet 201 is biased toward the side where the display screen 71 is located. This makes it convenient for the user to observe the display screen 71 when blowing air into the gas channel 101 through the inlet 201, so as to correctly guide the user to perform the blowing operation with the indication information of the display screen 71, thereby improving the accuracy of detection.

[0081] For example, such as Figure 2 As shown, the first structural member 20 includes a main body 21 and a mouthpiece 22. The main body 21 is located inside the housing 10. One end of the mouthpiece 22 is connected to the main body 21, and the other end can extend at least partially out of the housing 10. The mouthpiece 22 forms an air inlet 1011 and an air inlet 201 of the gas channel 101. The main body 21 and the housing 10 enclose a transmission channel 1012 of the gas channel 101. The mouthpiece 22 can be bent relative to the main body 21 toward the side where the display screen 71 is located, so that the air inlet 1011 is bent relative to the transmission channel 1012 toward the display screen 71.

[0082] In some embodiments, the gas detection component 40 includes one or more gas sensors, such as a carbon monoxide sensor, a nitrogen monoxide sensor, etc. When the gas detection component 40 includes a carbon monoxide sensor, the control component 50 can determine the concentration of carbon monoxide in the user's exhaled air based on the detection results of the gas detection component 40, and the user can determine their current health status based on the carbon monoxide concentration.

[0083] It should be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0084] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gas detection device, characterized in that, include: case; A first structural member is at least partially disposed within the housing. The first structural member and the housing together form a gas channel and a receiving cavity. At least one of the housing and the first structural member forms an air inlet. The air inlet communicates with the gas channel. The first structural member forms a communication port. A second structural member is disposed in the receiving cavity. The second structural member and the first structural member enclose a detection chamber. The communication port connects the detection chamber with the gas channel. The housing forms an air outlet, which is connected to the detection chamber. A gas detection component is disposed in the receiving cavity and is used to detect the gas in the detection cavity; A control component, located in the receiving cavity and electrically connected to the gas detection component, is used to control the gas detection component to detect the gas in the detection chamber.

2. The gas detection device according to claim 1, characterized in that, The first structural component and the second structural component are snapped together.

3. The gas detection device according to claim 2, characterized in that, The first structural component has a slot, and the bottom surface of the slot has a communication port; the second structural component includes an extension, which is engaged with the slot, and the extension and the bottom surface of the slot together form the detection chamber.

4. The gas detection device according to claim 1, characterized in that, The second structural member includes an extension and a mounting portion. The extension and the first structural member enclose the detection chamber. The gas detection component is disposed on the extension. The mounting portion is disposed on the first structural member and connected to the outer periphery of the mounting portion. The gas detection device also includes a functional component, which is mounted on the mounting portion.

5. The gas detection device according to claim 4, characterized in that, The control component is located on the side of the second structure facing the first structure.

6. The gas detection device according to claim 5, characterized in that, The mounting portion is located on one side of the extension portion, and the side of the extension portion away from the mounting portion has a clearance opening, which communicates with the detection chamber. The control component includes a circuit board, which includes a first region, a second region, and a third region. The first region is located on the side of the mounting portion facing the second structure. The second region is wrapped around the outer periphery of the mounting portion and connected to the first region. One end of the third region passes through the clearance opening and is connected to the second region. The other end of the third region is located in the detection chamber and is electrically connected to the gas detection component.

7. The gas detection device according to claim 5, characterized in that, The gas detection device also includes a power supply component, which is disposed on the first structural member and located on the outer periphery of the extension, and is electrically connected to the control component.

8. The gas detection device according to any one of claims 1-7, characterized in that, The gas detection device includes a guide, which is disposed in the gas channel.

9. The gas detection device according to claim 8, characterized in that, The opposite sides of the guide are respectively connected to the housing and the first structural member.

10. The gas detection device according to claim 8, characterized in that, The guide divides the gas channel into multiple sub-channels; the first structural member is provided with multiple connecting ports; any one of the sub-channels is connected to the detection chamber through at least one connecting port.

11. The gas detection device according to claim 8, characterized in that, The guide includes a first extension and a second extension, wherein the first extension is connected to the second extension and is bent relative to the second extension.

12. The gas detection device according to any one of claims 1-7, characterized in that, The first structural member forms multiple connecting ports, which are arranged circumferentially and are respectively connected to the edge of the detection chamber.

13. The gas detection device according to any one of claims 1-7, characterized in that, The housing includes: First shell; The second housing is separate from the first housing, and the second housing is connected to the first housing; The first structural member is located between the first housing and the second housing, and the first structural member and the first housing enclose the gas channel, and at least the first structural member and the second housing enclose the receiving cavity.

14. The gas detection device according to any one of claims 1-7, characterized in that, The gas detection device also includes a display screen, which is located on the side of the receiving cavity away from the gas channel and passes through the housing. The display screen is electrically connected to the control component. The gas channel includes an intake channel and a transmission channel. The intake channel connects the intake port and the transmission channel, and the intake channel is bent relative to the transmission channel toward the display screen.

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