Gas collection device and applications

Abstract

The present application provides a kind of gas collection device and application, can monitor whether the gas that user blows satisfies the requirement of specified amount.Gas collection device includes gas collection unit and gas quantity monitoring unit, gas collection unit has air inlet, air outlet and the gas flow path that is communicated with air inlet and air outlet, test film for collecting the substance in gas is arranged in gas flow path, gas collection unit has window part for detecting test film, the gas that enters from air inlet or the gas that flows out from air outlet can enter gas quantity monitoring unit, gas quantity monitoring unit monitors the amount of gas that enters from air inlet, or monitors the amount of gas that flows out from air outlet, gas quantity monitoring unit has display part, display part includes display area, the gas that flows into the gas quantity monitoring unit passes through display area, display area shows different content according to the amount of gas that passes through, gas quantity monitoring unit has transparent area for observing display area.

Description

Technical Field

[0001] This invention relates to the field of gas sampling technology. Specifically, it relates to a gas sampling device and its application. Background Technology

[0002] In the past, to obtain valuable information about patients' pathophysiological conditions, there were technical solutions for collecting volatile organic compounds (VOCs) in exhaled breath. These compounds are potential diagnostic biomarkers for various diseases and metabolic activities. The concept of breath metabolomics has been proposed in recent times. When a transition from a healthy state to a pathological state occurs, the distribution of VOCs in human exhaled breath is altered, and these alterations can be detected and used for diagnosis and monitoring.

[0003] Since Pauling's team used gas chromatography (GC) to detect more than 200 VOCs in human respiration in the 1970s, an increasing number of research teams have been studying exhaled metabolomics. In pathophysiological processes, changes in cellular metabolism lead to alterations in VOCs, biochemical byproducts. Hypoxia, excessive cell proliferation, excessive inflammation and reactive oxygen species activity, as well as other cancer-related pathological mechanisms, can all cause significant changes in the spectra and concentrations of local and systemic VOCs.

[0004] In the analysis of the aforementioned VOCs, sample pre-concentration can improve analytical accuracy and reduce the significant losses that occur during separation and purification. Common gas sample concentration methods include thermal desorption (TD) tubes and solid-phase microextraction (SPME).

[0005] Current gas collection and detection methods involve the user blowing air into a gas bag until it is full, then pre-concentrating the gas sample before releasing it into the detection instrument. Therefore, the operation requires removing the gas from the gas bag, which is quite cumbersome.

[0006] To improve operational convenience, a device is desired that can detect gas without removing the gas. Summary of the Invention

[0007] The problem the invention aims to solve

[0008] The purpose of this invention is to provide a novel gas collection device and application that can collect substances in a gas without removing the gas, and can replace a gas bag to monitor whether the gas volume has reached a predetermined amount.

[0009] Solution for solving the problem

[0010] This invention provides a gas collection device, including a gas collection unit and a gas quantity monitoring unit. The gas collection unit has an inlet, an outlet, and a gas flow path connecting the inlet and the outlet. A test membrane is disposed in the gas flow path for collecting substances in the gas. The gas collection unit has a window for detecting the test membrane. Gas entering the gas collection unit from the inlet or exiting the outlet can enter the gas quantity monitoring unit. The gas quantity monitoring unit monitors the amount of gas entering the gas collection unit from the inlet or the amount of gas exiting the outlet. The gas quantity monitoring unit has a display unit, including a display area. Gas flowing into the gas quantity monitoring unit passes through the display area, and the display area displays different content according to the amount of gas passing through. The gas quantity monitoring unit has a transparent area for observing the display area.

[0011] In at least one embodiment, the display area displays different colors depending on the amount of gas passing through it, and when a predetermined amount or more of gas passes through it, the display area displays a predetermined color.

[0012] In at least one embodiment, the display unit further includes a reference area that displays the predetermined color; or, the display unit further includes a reference area and a dividing area disposed between the display area and the reference area, the reference area displaying the predetermined color, and the dividing area having a color different from the display area and the reference area; or, the display unit further includes a reference area, and there are two display areas, with the reference area located between the two display areas in the flow direction of the gas flowing into the gas volume monitoring unit, and the reference area displaying the predetermined color.

[0013] In at least one embodiment, the gas quantity monitoring unit is detachably mounted to the gas collection unit from the side where the gas outlet of the gas collection unit is located.

[0014] In at least one embodiment, the gas quantity monitoring unit has a non-transparent area, which, when the gas quantity monitoring unit is installed on the gas collection unit, obscures the window portion of the gas collection unit.

[0015] In at least one embodiment, the gas quantity monitoring unit includes two stacked resin layers, one of which is formed of a transparent material to constitute the transparent area, and the other of which is formed of a non-transparent material to constitute the non-transparent area, with the display unit sandwiched between the two resin layers.

[0016] In at least one embodiment, the gas quantity monitoring unit includes: three or more layers of resin stacked together, all of which are formed of transparent material, wherein the display portion is sandwiched between any two adjacent resin layers, and a light-shielding layer is disposed in the area outside the display portion, between any two adjacent resin layers to form the non-transparent area.

[0017] In at least one embodiment, the gas quantity monitoring unit has a gas passage area and sealing areas located on both sides of the gas passage area. Both the gas passage area and the sealing areas on both sides extend along the length direction of the gas quantity monitoring unit. In the cross-section of the gas quantity monitoring unit, the gas passage area is located between the two sealing areas.

[0018] In at least one embodiment, the display unit is disposed in the middle of the gas flow path, or in the air inlet, or in the air outlet, such that the gas flowing into the gas collection unit passes through the display area, wherein: the transparent area is disposed in the housing of the gas collection unit, so that the display unit can be observed through the transparent area.

[0019] In at least one embodiment, the display area is located in an area that can be observed through the window portion, and at least a portion of the window portion forms the transparent area.

[0020] In at least one embodiment, the gas collection device further includes a virus filter layer, which is disposed in the middle of the gas flow path, in the inlet section, or in the outlet section, and the virus filter layer allows gas to pass through but does not allow viruses to pass through.

[0021] In at least one embodiment, the gas collection device further includes: an identification module disposed in the gas collection unit, wherein the content displayed by the identification module when the test membrane fails is different from the content displayed when the test membrane does not fail, wherein the identification module is located at a position that can be observed through the window, or the identification module is located at a position that can be observed through the transparent area provided in the housing of the gas collection unit, or the housing of the gas collection unit has a window for observing the identification module.

[0022] The present invention also provides an application of the gas collection device described in any of the above claims, including at least one of the following uses: performing qualitative or quantitative analysis on at least one of the contents of organic matter, carbon dioxide, carbon, and alcohol in a gas, or identifying preset characteristics of the gas.

[0023] The effects of the invention

[0024] This invention provides a gas collection device and application that can collect substances in a gas without removing the gas, and can replace a gas bag to monitor whether the gas blown in by the user meets the specified quantity requirements. Attached Figure Description

[0025] Figure 1 This is a perspective view of a gas collection unit according to one embodiment of the present invention.

[0026] Figure 2 This is an exploded view of a gas collection unit according to one embodiment of the present invention.

[0027] Figure 3 This is a side sectional view of a gas collection unit according to one embodiment of the present invention.

[0028] Figure 4 This is a front view of the air inlet of a gas collection unit according to one embodiment of the present invention.

[0029] Figure 5 This is a side sectional view of the main body of a gas collection unit according to one embodiment of the present invention.

[0030] Figure 6 This is a perspective view of the window portion of a gas collection unit according to one embodiment of the present invention.

[0031] Figure 7 This is a side sectional view of the window portion of a gas collection unit according to one embodiment of the present invention.

[0032] Figure 8 This is a top view of a gas quantity monitoring unit according to one embodiment of the present invention.

[0033] Figure 9 This is a top view showing the gas collection unit of one embodiment of the present invention inserted into a gas quantity monitoring unit (constituting a gas collection device).

[0034] Figure 10 This is a side view showing the gas acquisition unit of one embodiment of the present invention inserted into the gas quantity monitoring unit.

[0035] Figure 11 This is a diagram observed from one side of the gas collection device along its length in the aforementioned insertion state.

[0036] Figure 12 This is a diagram observed from the other side along the length of the gas collection device in the aforementioned insertion state.

[0037] Figure 13 An embodiment of the transparent and non-transparent regions in this invention is shown.

[0038] Figure 14 Another embodiment of the transparent and non-transparent regions in this invention is shown.

[0039] Figure 15 This illustrates yet another embodiment of the transparent and non-transparent regions in the present invention.

[0040] Figure 16 A schematic diagram of the insertion opening of the two-layer structure in this invention is shown.

[0041] Explanation of reference numerals in the attached figures

[0042] 1. Gas sampling unit; 2. Inlet; 3. Outlet; 4. Detection unit; 41. Main body; 42. Notch; 411. Space; 421. Planar part; 422. First protrusion; 423. Second protrusion; 424. Through hole; 5. Test membrane; 6. Window; 61. Planar part; 62. First recess; 63. Second recess; 64. Buckle; 621. First step; 631. Second step; 65. Detection area; P. Detection unit The axis, K1~K6, opening, L1, first flow path, L2, second flow path, L3, third flow path, L4, fourth flow path, 10, gas quantity monitoring unit, 11, gas passage area, 110, insertion opening, 111, connecting part, 112, monitoring part, 12, sealing area, 20, dividing area, 21, display area, 22, reference area, 23, vent hole, A, non-transparent area, B, transparent area, F1~F4, resin layer, S, light shielding layer. Detailed Implementation

[0043] The gas collection device of the present invention will now be described with reference to the accompanying drawings. The scope of the present invention is not limited to the following embodiments, and modifications can be made freely within the scope of the technical concept of the present invention. Furthermore, the scale and quantity of the illustrations are not intended to limit the gas collection device of this application.

[0044] <Detailed Embodiments of the Invention>

[0045] The gas collection device comprises a gas collection unit and a gas quantity monitoring unit. The gas collection unit allows gas to flow in and out, collecting substances from the gas flowing through it for subsequent detection. The gas quantity monitoring unit also allows gas to flow in and out, and monitors whether the amount of gas flowing into it meets a minimum (specified) requirement. By installing a gas quantity monitoring unit on the gas collection unit, the gas collection device of this invention can not only collect substances from the gas but also monitor whether the amount of gas blown in meets the minimum requirement, thereby improving the accuracy of the gas collection device's detection and ensuring that the collected gas quantity meets the requirements.

[0046] The following is a separate description of each component / assembly / unit of the gas collection device.

[0047] 1. <Gas Sampling Unit>

[0048] Reference Figures 1 to 3 The gas collection unit 1 of this application includes an inlet section 2, an outlet section 3, and a detection section 4. The detection section 4 is a component for gas flow; from a connection perspective, the shape of the detection section 4 is preferably cylindrical, with an inner diameter of approximately 1 cm. The detection section 4 has openings at both ends, allowing gas to enter from one end and exit from the other. The inlet section 2 and the outlet section 3 are connected to the two ends of the detection section 4 in an airtight manner via threaded connections. Furthermore, as long as a sealed connection between the inlet section 2 and the outlet section 3 and the detection section 4 is achieved, the shape of the detection section 4 is not limited, and the connection method is not limited to threaded connections; other methods such as interference fits or snap-fits can also be used. The inlet section 2, the outlet section 3, and the detection section 4 can also be formed integrally.

[0049] 1-1. <Air Intake Section>

[0050] The air intake 2 is connected to one end of the detection unit 4 and is installed in a detachable manner via a threaded connection. The air intake 2 is cylindrical in shape, allowing the user to blow air into it. Additionally, as... Figure 2 As shown, by providing a portion that is recessed radially inward from the air inlet 2, it is convenient for the user to hold the air inlet 2 in their mouth and blow air. Figure 4 As shown, a rectifier plate is provided inside the air intake 2, and multiple through holes are provided on the rectifier plate. Through the rectifier plate, the airflow blown out by the user's mouth can be delivered into the detection unit 4 in a uniform and regular flow pattern. The shape of the air intake 2 is not limited; it can be any shape as long as it allows the user to blow air.

[0051] 1-2. <Ventilation Section>

[0052] The air outlet 3 is connected to the other end of the detection unit 4 and is installed in the detection unit 4 in a detachable manner via a threaded connection.

[0053] In the gas outlet 3, a large-diameter part 31, a narrow-diameter part 32, and a small-diameter part 33 are integrally formed. The large-diameter part is the part of the gas outlet 3 that is connected to the detection part 4. Its shape is the same as that of the detection part 4, for example, it is cylindrical. When the gas outlet 3 is connected to the detection part 4, the outer peripheral wall of the large-diameter part 31 is roughly flush with the outer peripheral wall of the detection part 4, so that the gas collection unit 1 has a smooth and beautiful overall structure.

[0054] The outer diameter of the reduced diameter portion 32 decreases as it extends from the detection portion 4 of the air outlet portion 3 to the side opposite to the detection portion 4, and a small diameter portion 33 is formed at the top of the reduced diameter portion 32.

[0055] 1-3. <Inspection Department>

[0056] As described above, the detection unit 4 is, for example, cylindrical in shape. Gas can be blown into the detection unit 4 from the air inlet 2 and delivered to the air outlet 3 through the gas flow path inside the detection unit 4. The detection unit 4 has: a main body 41, which constitutes the outer shape of the detection unit 4, an internal flow path for gas flow, and an outer shape that is generally cylindrical, such as... Figure 2 As shown, the outer peripheral wall of the main body 41 has a notch 42 that is recessed radially inward; a test membrane 5, which is disposed in the notch 42, is used to test the gas in the gas flow path within the detection unit 4 for detection; and a window 6, which is detachably mounted to the main body 41 such that the test membrane 5 is sandwiched between the window 6 and the main body 41, and has a gas flow path for gas to flow through inside.

[0057] like Figure 5 As shown, in the main body 41, the notch 42 is disposed on the side near the air outlet 3. This allows for a relatively large space 411 to be provided inside the portion of the main body 41 near the air inlet 2. Gas blown in by the user can first pass through the space 411 before flowing into the gas flow path. That is, the space 411 is upstream of the test membrane 5. A desiccant can be placed in the space 411 as needed, or a filter material can be placed according to the substance to be filtered. An opening K1 is formed in the space 411, which communicates with an opening K2 described later to allow gas flow.

[0058] The notch 42 is recessed radially inward toward the cylindrical main body 41. The test membrane 5 and the window 6 are located in the notch 42. Specifically, a flat portion 421 is formed in the notch 42, which facilitates the installation of the window 6 (described later). A first protrusion 422 and a second protrusion 423 protrude upward from the flat portion 421, and the test membrane 5 is disposed on the first protrusion 422. The protrusion height of the first protrusion 422 and the second protrusion 423 is less than the recess depth of the notch 42. That is, when the window 6 (described later) is installed on the main body 41, the window 6 is contained within the overall outline of the detection part 4 or is approximately flush with the overall outline of the detection part 4. This facilitates the formation of a portion in the main body 41 for the test membrane 5 and the window 6, and makes the overall structure of the gas collection unit 1 smooth and aesthetically pleasing.

[0059] Here, the portion of the first protrusion 422 where the test membrane 5 is placed is preferably parallel to the axis P of the detection unit 4 (gas collection unit 1). Specifically, when the detection unit 4 (gas collection unit 1) is placed horizontally, the portion of the first protrusion 422 where the test membrane 5 is placed can be in a horizontal state, thereby facilitating the stable placement of the test membrane 5 on this portion. Furthermore, since the portion of the first protrusion 422 where the test membrane 5 is placed is parallel to the axis P of the detection unit 4, the test membrane 5 placed on the first protrusion 422 is also parallel to the axis P of the detection unit 4. Thus, when the detection unit 4 is in a horizontal state, the test membrane 5 can be parallel to the horizontal plane, facilitating the detection of the test membrane 5 using the detection device. However, as long as the test membrane 5 can be stably placed in the detection unit 4 and can be clearly detected through the window portion 6, the placement form of the test membrane 5 is not limited.

[0060] An opening K5 is provided in the first protrusion 422, and an opening K2 is provided in the second protrusion 423. Openings K5 and K2 allow gas to flow through. When the test membrane 5 is placed on the first protrusion 422, it is set and fixed in such a way that one side of the test membrane 5 completely covers the opening K5 on the first protrusion 422.

[0061] Reference Figure 2 and Figure 5 A through hole 424 is provided through the flat part 421 to allow the latch 64 of the window part 6 to be inserted and engaged. By inserting the latch 64 of the window part 6 into the through hole 424, the window part 6 can be engaged with the main body part 41.

[0062] Reference Figure 6 The window portion 6 can be formed of a transparent and flexible material. The transparency allows the detection device to see the test membrane 5 through the window portion 6, thus enabling detection. The flexibility allows the buckle 64 to bend appropriately, facilitating the installation and removal of the window portion 6. Corresponding to the flat portion 421 in the main body portion 41, the window portion 6 has a flat portion 61, which faces the flat portion 421 when the window portion 6 is installed with the main body portion 41. A first recess 62 and a second recess 63 are recessed in the flat portion 61. The sizes of the first recess 62 and the second recess 63 correspond to the sizes of the first protrusion 422 and the second protrusion 423, respectively, meaning that the first protrusion 422 and the second protrusion 423 can be embedded into the first recess 62 and the second recess 63, respectively.

[0063] Furthermore, such as Figure 6As shown, a first step portion 621 is formed in the first recess 62, and a second step portion 631 is formed in the second recess 63. When the test membrane 5 is placed on the first protrusion 422 and the window portion 6 is installed together with the main body portion 41, the first step portion 621 can abut against the first protrusion 422 airtightly through the test membrane 5, and the second step portion 631 can abut against the second protrusion 423 airtightly. With the above structure, the test membrane 5 can be reliably fixed, preventing the test membrane 5 from shifting or misaligning within the detection portion 4, which would result in failure to properly collect substances in the gas.

[0064] like Figure 2 , Figure 3 As shown, when the window portion 6 is installed on the main body portion 41, the window portion 6 is located above the test membrane 5. The test membrane 5 is disposed in the gas flow path of the detection unit 4, located below the window portion 6, and the test membrane 5 is opposite to the window portion 6. The gas flow path of the detection unit 4 is configured such that the gas supplied through the air inlet portion 2 is introduced into the test membrane 5 from the side of the test membrane 5 closest to the window portion 6, and then exited from the other side of the test membrane 5 to the air outlet portion 3.

[0065] And, as Figure 2 , Figure 3 As shown, the window portion 6 also has a detection area 65, which is planar. When the window portion 6 is mounted on the main body portion 41, the angle between the plane of the detection area 65 and the plane of the test film 5 is less than 30°. Therefore, the test film 5 can be detected well through the window portion 6. Preferably, this angle is less than 20°, more preferably less than 10°, and most preferably, the plane of the detection area 65 is parallel to the plane of the test film 5. The detection area 65 referred to here is the area of ​​the window portion 6 used to detect the test film 5; that is, the test film 5 can be detected through this detection area 65 of the window portion 6.

[0066] In the gas collection unit 1, the window 6 is opposite to the test membrane 5. However, the positional relationship between the window 6 and the test membrane 5 is not limited to this. For example, the window 6 may be completely opposite to the test membrane 5 or partially opposite to it. The important thing is that the test membrane 5 can be detected by the detection device through the detection area 65 of the window 6. Alternatively, the window 6 and the test membrane 5 may not be opposite each other. In this case, a reflective member capable of reflecting detection light may be selectively added to the detection unit 4 as needed; however, this will not be explained here.

[0067] Preferably, when the window portion 6 is projected onto the plane of the test film 5, the window portion 6 at least covers a portion of the test film 5. More preferably, the window portion 6 is completely opposite to the test film 5, and when the window portion 6 is projected onto the plane of the test film 5, the test film 5 completely includes the projection of the window portion 6, or the projection of the window portion 6 completely includes the test film 5 (i.e., the window portion 6 completely covers the test film 5). Even more preferably, when the window portion 6 is projected onto the plane of the test film 5, the test film 5 is completely included within the projection of the window portion 6. This allows for effective detection of the test film 5.

[0068] There is a gas flow path inside the window section 6. For example... Figure 7 As shown, the gas flow path within the window portion 6 has openings K3 and K4 on both sides. Opening K3 corresponds to opening K2 in the main body portion 41, and opening K4 corresponds to opening K5 in the main body portion 41. That is, the gas flow path within the window portion 6 opens at the portion of the window portion 6 opposite to the test membrane 5. By positioning the gas flow path inside the window portion 6 above the test membrane 5 and having an opening facing the test membrane 5, gas can be reliably introduced into the test membrane 5 from the side of the test membrane 5 closest to the window portion 6.

[0069] like Figure 6 As shown, a latch 64 protrudes downward from the flat portion 61. The latch 64 can be bent appropriately. When installing the window portion 6 onto the main body portion 41 as described above, by bending the latch 64 appropriately, the latch 64 can be inserted into the through hole 424. Then, under the action of the restoring force, the latch 64 returns to its original shape, thereby engaging with the main body portion 41. When removing the window portion 6, by bending the latch 64 appropriately and disengaging it from the engaged position, it can be pulled out from the through hole 424, thereby allowing the window portion 6 to be removed from the main body portion 41.

[0070] 1-4. <Test Membrane>

[0071] The test membrane 5 can collect substances from the gas passing through the gas flow path by physical and / or chemical means, thereby collecting the gas. Specifically, the test membrane 5 can test multiple substances or components in the gas through physical adsorption, chemical adsorption, chemical reaction, or other methods. For example, the test membrane 5 is configured to chemically or physically adsorb a specific substance in the gas, and when the adsorption of that specific substance is detected through the window 6 (described later), the specific substance contained in the gas can be detected. Alternatively, the test membrane 5 contains a substance that can chemically react with a specific substance in the gas, and when a chemical reaction is detected through the window 6 (described later), the specific substance contained in the gas can be detected.

[0072] In one example, the test membrane described above could be a test strip for measuring diabetes, a test strip for measuring Helicobacter pylori, or the like.

[0073] Optionally, the test membrane includes multiple test areas spaced apart. Each test area includes a reagent used to test the gas. The reagent reacts with the corresponding reactant in the gas, causing a color change.

[0074] The reagents include one or more of the following: quantum dot materials, chemical dyes, and fluorescent luminescent materials.

[0075] The quantum dot materials may include group II-VI CdS, CdSe, CdTe, ZnS, ZnSe, PbS, PbSe, group III-V InP, GaP, GaN, AlN, and core-shell structured materials CdS / ZnS, CdSe / CdS, CdSe / ZnS, CdSe / CdS / ZnS, CdTe / CdS, CdTe / CdS / ZnS, ZnSe / ZnS, InP / ZnSe, InP / ZnS, InP / ZnSe / ZnS, InP / GaP / ZnS, carbon quantum dots, perovskite quantum dots, and noble metal (e.g., Au, Ag) quantum dots.

[0076] Chemical dyes can be acid-base indicator dyes, Lewis acid-base dyes, redox dyes, π-π conjugated dyes, etc.

[0077] Specifically, the chemical dyes and fluorescent luminescent materials can be one or more of the following: thymol blue, methyl yellow, methyl orange, bromophenol blue, bromocresol green, bromocresol violet, bromomethylphenol blue, neutral red, phenol red, phenolphthalein, thymolphthalein, hexanal (DNPH), dinitrophenylhydrazine, copper tetraphenylporphyrin (CuTPP), iron porphyrin (FeTPP), zinc porphyrin (ZnTPP), tetraphenylporphyrin (H2TPP), methyl red, bromophenol red, bromothymol green, porphyrin, metalloporphyrin-type dyes, bromoxylenol blue, 4-nitrophenylhydrazine, Rechardt's Dye, Malachite Green Chloride, self-synthesized hydrazine-containing fluorescent molecules, and porphyrin manganese.

[0078] 1-5. Assembly of Gas Sampling Unit 1

[0079] As mentioned above, refer to Figure 2 , Figure 5 and Figure 6The test membrane 5 is placed on the first protrusion 422, so that the test membrane 5 completely covers the opening K5 of the first protrusion 422, and the window 6 is installed on the main body 41 to form the detection part 4. As described above, the through hole 424 of the main body 41 corresponds to the snap fastener 64 of the window 6, and the first protrusion 422 and the second protrusion 423 of the main body 41 correspond to the first recess 62 and the second recess 63 of the window 6. Therefore, by inserting the snap fastener 64 and engaging it with the through hole 424, the first protrusion 422 and the second protrusion 423 of the main body 41 can be fitted into the first recess 62 and the second recess 63 of the window 6, respectively. Thus, the main body 41 and the window 6 are tightly fitted together through the test membrane 5, forming an airtight gas flow path. This gas flow path allows the gas flowing through it to pass from the side of the test membrane 5 near the window 6 through the main surface of the test membrane 5 to the other side of the test membrane 5. In addition, since the test membrane 5 is located below and opposite the window 6 in the gas flow path, the test membrane 5 can be detected through the transparent window 6 located above the test membrane 5.

[0080] Based on this, the air inlet 2 and the air outlet 3 are respectively threaded to the detection unit 4. Then, the gas quantity monitoring unit 10, described later, can also be connected to the air outlet 3.

[0081] When replacing the test membrane 5, the user presses both sides of the window 6 to bend the clip 64 appropriately, so that the window 6 can be removed from the main body 41. Then, a new test membrane 5 is replaced, and the window 6 is reinstalled.

[0082] 1-6. <Gas Flow Path>

[0083] As described above, a gas flow path is formed within the detection unit 4, through which the inlet unit 2 and the outlet unit 3 are connected. This gas flow path includes: a first flow path L1 (see example...) Figure 5 The first flow path L1 is located in the main body 41. One end of the first flow path L1 has an opening K1, which connects to the space 411 and then to the air intake 2. The other end of the first flow path L1 has an opening K2. The second flow path L2 (see example) Figure 7 The first flow path L1 has an opening K2 at one end, which is located in the window portion 6. The second flow path L2 has an opening K3 at one end, which connects to the opening K2 at the other end of the first flow path L1. The third flow path L3 is also located in the window portion 6. One end of the third flow path L3 connects to the other end of the second flow path L2. The third flow path L3 is located above the test membrane 5, and the other end of the third flow path L3 has an opening K4 facing the test membrane 5. The fourth flow path L4 (see example...) Figure 5The fourth flow path L4 is located in the main body 41. One end of the fourth flow path L4 has an opening K5, which is connected to the other end of the third flow path L3. The other end of the fourth flow path L4 has an opening K6, which is connected to the air outlet 3.

[0084] The structure of the gas flow path is not limited to this, as long as it satisfies the requirement that gas is introduced into the test membrane 5 from the side near the window portion 6 and then exited from the other side of the test membrane 5. For example, the gas flow path may be formed only in the main body portion 41, but it is preferable that a flow path is also formed in the window portion 6. In addition, the second flow path L2 and the third flow path L3 may be set as a single flow path.

[0085] In the gas sampling unit 1, the cross-section of the gas flow path is rectangular. The flow area (i.e., cross-sectional area) at any point in the first flow path L1 is, for example, greater than or equal to 2mm × 5mm; the flow area (i.e., cross-sectional area) at any point in the second flow path L2 is, for example, greater than or equal to 1mm × 5mm; the flow area (i.e., cross-sectional area) at any point in the third flow path L3 is, for example, greater than or equal to 3mm × 7mm; and the flow area (i.e., cross-sectional area) at any point in the fourth flow path L4 is, for example, greater than or equal to 3mm × 7mm. Here, the cross-sectional area of ​​the gas flow path refers to the area obtained by cutting the gas flow path with a plane orthogonal to the gas flow direction. This ensures that the user does not feel strained during the blowing process, allows for smooth gas flow, and guarantees that the test membrane 5 has sufficient exposed area for detection within the gas flow path. Furthermore, the shape of the cross-section of the gas flow path is not limited to a rectangle and can also be other shapes.

[0086] Preferably, the gas flow path in this embodiment is a zigzag shape, such as... Figure 3 As shown, the first flow path L1, the second flow path L2, the third flow path L3, and the fourth flow path L4 constitute a zigzag gas flow path. Here, "zigzag" is not narrowly limited to... Figure 3 The term "bend" in the gas flow path is not used to describe the specific shape of the gas flow path. It can be broadly interpreted to include a series of meanings that substantially change the direction of gas flow, such as bending and turning. Furthermore, the location, number of bends, and angle of the bends in the gas flow path are not limited. In addition, the gas flow path can also be in a shape other than a zigzag line, as long as it connects the inlet 2 and the outlet 3 and allows gas to be introduced from the side of the test membrane 5 near the window 6.

[0087] 1-7. <Gas Flow in Gas Acquisition Unit 1>

[0088] like Figure 3As shown, the arrows indicate the direction of gas flow in the gas collection unit. When the user blows air into the air inlet 2, the gas enters the space 411 and further enters the gas flow path of the main body 41 through the opening K1 inside the space 411. It then flows out through the opening K2 in the second protrusion 423. Since the second protrusion 423 is fitted into the second recess 63, openings K2 and K3 are connected. The gas flowing out from opening K2 enters the flow path inside the window 6 through opening K3. Then, it flows out from opening K4. Since the first protrusion 422 is fitted into the first recess 62, openings K4 and K5 are connected. The gas flowing out from opening K4 enters the gas flow path of the main body 41 through opening K5, and then flows out to the air outlet 3 through opening K6.

[0089] When the gas volume monitoring unit (described later) is installed on the gas collection unit 1 from the side where the gas outlet 3 is located, the gas enters the gas volume monitoring unit after flowing as described above in the gas collection unit 1. At this time, the gas volume monitoring unit monitors the amount of gas flowing out from the gas outlet 3. When the display unit of the gas volume monitoring unit (described later) is provided in the gas collection unit 1, the gas flows through the gas volume monitoring unit (display unit) during the flow as described above in the gas collection unit 1. At this time, the gas volume monitoring unit monitors the amount of gas entering the gas collection unit 1 from the gas inlet 2.

[0090] The above describes the gas collection unit 1 of this application; however, it is self-evident that various modifications can be made within the scope of this application.

[0091] For example, as described above, the window portion 6 is detachably mounted to the main body portion 41 in such a way that the test membrane 5 is sandwiched in the middle, thereby enabling the replacement of the test membrane 5. However, this application is not limited to this, and the structure is not limited as long as it allows gas to pass through the inside of the detection portion 4 and uses the test membrane 5 to collect substances in the gas.

[0092] In addition to the structures described above, the test membrane 5 can also be detachably mounted on the detection unit 4 using the following structures. In one example, the detection unit 4 and the window 6 can be formed as one unit. For example, an opening can be formed in the detection unit 4 or the window 6 (the window 6 is then part of the detection unit 4), and the test membrane 5 can be inserted into the opening. In this case, the detection unit 4 can include a frame for supporting the test membrane 5.

[0093] Alternatively, the test membrane 5 and the window 6 can be integrated. In this case, the window 6 can be directly installed on the main body 41. If the test membrane 5 needs to be replaced, both the test membrane 5 and the window 6 can be replaced together. In this case, the test membrane 5 is configured within the window 6 to collect substances in the gas and to be detected by the detection device through the window 6. This simplifies the installation process and avoids problems with poor collection caused by errors in the installation of the test membrane 5.

[0094] For example, the test membrane 5 can be entirely located within the main body 41 or the window 6, allowing the test membrane 5 to be exposed from the main body 41 or the window 6 after the window 6 is removed. In this case, the test membrane 5 can also be replaced.

[0095] The above examples illustrate various structures for installing the test membrane 5 in a detachable manner. However, it should be clear that other structures are also possible as long as the test membrane 5 can be installed in a detachable manner.

[0096] For example, the gas flow path in the gas collection unit 1 described above is formed in both the main body 41 and the window 6, but it may also be formed only in the main body 41.

[0097] For example, the protrusion in the gas collection unit 1 is provided on the main body 41 and the recess is provided on the window 6, but it can be the other way around, or the protrusion and recess can be omitted.

[0098] For example, the window 6 in the gas collection unit 1 described above is formed of a transparent material. However, the window 6 may also be opaque. In this case, a through-hole can be provided in the part of the window 6 used to detect the test membrane 5 (e.g., the detection area 65), and a light-transmitting sheet, such as a glass lens or a transparent resin sheet, can be placed in the through-hole. This allows for the selection of a non-transparent material to form the window, saving costs. The transparent component does not need to be replaced. Thus, the test membrane 5 can still be detected. From a cost perspective, a transparent resin sheet is preferred.

[0099] For example, in the gas collection unit 1 above, the window in the window section 6 for the user to observe is formed into a flat shape, but the other side of the window of the window section 6 (the side of the main body 41 opposite to the side where the window section 6 is installed) can be symmetrically flat with the flat window of the window section 6, or it can be a normal circular tube.

[0100] 2. <Gas Quantity Monitoring Unit>

[0101] like Figure 8 As shown, the gas quantity monitoring unit 10 of this application has a gas passage area 11 and sealing areas 12 located on both sides of the gas passage area 11. Both the gas passage area 11 and the sealing areas 12 on both sides are along the length direction of the gas quantity monitoring unit 10. Figure 8 , Figure 9 , Figure 10 Extending in the left-right direction, in the short side direction of the gas quantity monitoring unit 10 ( Figure 8 , Figure 9 In the vertical direction of the gas monitoring unit 10, or in the cross-section of the gas quantity monitoring unit 10, the gas passage area 11 is located between the two sealing areas 12. Thus, the gas passage area 11 has openings on both sides in the length direction of the gas quantity monitoring unit 10, allowing gas to pass through the gas passage area 11.

[0102] A display unit is provided in the gas passage area 11. By allowing gas to pass through the display unit as it passes through the gas passage area 11, the amount of gas passing through the display unit can be detected and the information can be provided to the user.

[0103] The gas quantity monitoring unit 10 can be installed on the gas acquisition unit 1 for use. The gas quantity monitoring unit 10 can be sleeved on the gas acquisition unit 1 from the gas outlet 3 side, covering at least the C-region of the gas acquisition unit 1 (see reference). Figure 1 The gas volume monitoring unit 10 is located on the side of the air intake section 2, in other words, the gas volume monitoring unit 10 covers the window of the gas acquisition unit 1.

[0104] exist Figure 9 , Figure 10 The diagram shows the configuration in which the gas quantity monitoring unit 10 is installed on the gas collection unit 1. Figure 11 and Figure 12 They respectively show from Figure 9 , Figure 10 The structure of the gas collection device can be observed on the right and left sides of the structure shown.

[0105] 2-1. <Gas Passage Area>

[0106] The gas passage area 11 has, in sequence along the length of the gas quantity monitoring unit 10, an insertion opening 110, a connecting portion 111, and a monitoring portion 112. The insertion opening 110 is located on one side along the length of the gas quantity monitoring unit 10. Figure 8 The gas collection unit 1 (on the left side) has a shape that corresponds to a portion of the detection section 4 and the outlet section 3 of the gas collection unit 1, that is, it also has a large-diameter section, a reduced-diameter section, and a small-diameter section. Therefore, the gas collection unit 1 can be smoothly inserted through the insertion opening 110, and the small-diameter section of the outlet section 3 of the gas collection unit 1 inserted into the insertion opening 110 enters the connecting section 111 described later. Furthermore, since the gas quantity monitoring unit 10 and the gas collection unit 1 have corresponding shapes, there is a certain adhesion force between the inserted gas collection unit 1 and the gas quantity monitoring unit 10, eliminating the need for a fixing structure between them.

[0107] In one example, the main body of the gas volume monitoring unit 10 may be made of a flexible or slightly flexible material to facilitate a substantially leak-proof fit between the gas collection unit 1 and the gas volume monitoring unit 10.

[0108] The connecting part 111 connects the insertion opening 110 and the monitoring part 112 (described later), in the short side direction of the gas collection unit 1 ( Figure 8 , Figure 9 In the vertical direction, the connecting portion 111 has the same width as the small diameter portion of the insertion opening 110.

[0109] The monitoring unit 112 is located on the other side of the length direction of the gas quantity monitoring unit 10. Figure 8 On the right side of the monitoring unit 112, along the length of the gas volume monitoring unit 10, there is a vent 23, which allows gas to be smoothly discharged through the vent 23. The gas passage area 11 is based on the insertion opening 110 and the vent 23, allowing gas to circulate within it.

[0110] The gas volume monitoring unit 10 is primarily formed of a transparent material such as PET. A resin layer can be formed using a mold. By laminating and sealing the transparent resin layer, the gas volume monitoring unit 10 of this application can be obtained. The two sides of the resin layer are planar, and the middle has a shape corresponding to the gas passage area 11, that is, on one side along the length direction of the gas volume monitoring unit 10 (…). Figure 9 , Figure 10 On the right side), the middle part of the resin layer is shaped to match half of the outline of the detection part 4 of the gas collection unit 1 and the gas outlet part 3, on the other side along the length direction of the gas volume monitoring unit 10 ( Figure 9 , Figure 10 On the left side), the middle portion of the resin layer forms an air passage, for example, having a slightly concave area relative to the two sides (not shown), thereby allowing gas flow (see reference). Figure 9 (The dashed arrow in the middle).

[0111] One side of the middle portion of the resin layer along the length direction ( Figure 10 The right side) is formed in a shape that mates with a part of the detection section 4 and the air outlet section 3. Figure 10 The shape shown on the right allows the gas collection unit 1 to be smoothly inserted into the middle part of the resin layer, on the other side along the length direction. Figure 10 The left side of the structure forms a passage for gas flow.

[0112] When bonding the multilayer resin layers, the portions that form the outline shape of the detection section 4 and the gas outlet section 3 are bonded together so that the bonded resin layers have a shape that matches the gas collection unit 1 (e.g., Figure 10 (as shown in the diagram), so that the gas collection unit 1 can be smoothly inserted into the gas volume monitoring unit 10, and a sealing treatment is performed to form a sealing area 12. When further laminating other resin layers, in Figure 10 Based on the shape shown, further methods are used to satisfy that shape from Figure 10 The upper and / or lower sides of the resin layer are stacked, and the gas volume monitoring unit 10 obtained by the final stacking still presents a certain shape. Figure 10 The shape shown. Of course, multi-layered structures can also be sealed after stacking.

[0113] like Figure 10 As shown in the dashed box on the left, the display unit is positioned in the gas flow path. Specifically, for example, the two resin layers sandwiching the display unit can be spot-welded at intervals around the perimeter of the display unit. This allows the display unit to be fixed in a certain area, preventing it from detaching from the monitoring unit 112. Furthermore, since the welding is done at intervals, it does not obstruct the gas flow, ensuring that the gas passes through the display unit to monitor whether the gas quantity meets the requirements.

[0114] 2-2. Display Section

[0115] The display unit is located in the monitoring unit 112, such as Figure 8 As shown, the display unit includes a display area 21 and a reference area 22, and the positions of the display area 21 and the reference area 22 are not limited to... Figure 8 The positional relationship shown can also be interchanged. Furthermore, the display unit may also have a segmented area 20 (see reference). Figure 9 The display area 21 is, for example, a test strip that reacts with moisture, carbon dioxide, oxygen, etc., in the gas and changes color. For example, the display area contains a cobalt salt (e.g., cobalt chloride, CoCl2). When no gas passes through, the display area is blue. When gas passes through, the display area absorbs moisture from the gas, and the cobalt chloride forms cobalt chloride hexahydrate, CoCl2·6H2O, which is pink. The size of the display area is, for example, 0.8cm × 2cm, and it is used to monitor, for example, a gas volume of 1L. That is, when the amount of gas blown in is 1L or more, the display area changes from blue to pink. The area ratio of the reference area to the display area can be 1:1, that is, the size of the display area can be, for example, 0.8cm × 1cm. Furthermore, the area of ​​the display area is not limited and can be appropriately selected according to specific circumstances.

[0116] Reference area 22 is always pink for user reference. When the user blows in a sufficient amount of gas (the specified amount or more), display area 21 changes to the same color as the reference area, so that the user can clearly know whether the amount of gas blown in meets the requirements.

[0117] The segmented region 20 is located between the reference region 22 and the display region 21. The segmented region 20 is a different color from the reference region 22 and the display region 21, such as black or other colors with obvious color differences, so that users can easily compare the reference region 22 and the display region 21.

[0118] Alternatively, the display unit may have two display areas 21, located in the direction of gas flow into the gas flow monitoring unit 10 (e.g., ...). Figure 8 (From left to right in the middle), the reference area 22 is located between the two display areas 21. In the two display areas 21, the display area 21 located upstream in the gas flow direction comes into contact with the gas first, for example, absorbing more moisture from the gas, while the display area 21 located downstream in the gas flow direction comes into contact with the gas later, and absorbs less moisture compared to the upstream display area 21.

[0119] Therefore, the color change of the upstream display area 21 is greater than that of the downstream display area 21. The areas of the upstream and downstream display areas 21 are appropriately set so that: when the user observes that the upstream display area 21 changes to the same color as the reference area, it indicates that the amount of gas blown in has reached the specified amount (minimum requirement), and blowing can be stopped. When the user observes that the downstream display area 21 changes to the same color as the reference area, it indicates that the amount of gas blown in by the user has reached the maximum requirement, and blowing should be stopped. Of course, the areas illustrated above are merely examples; the upstream and downstream display areas 21 are not limited to the areas specified above. As long as the two display areas 21 are arranged in the direction of gas flow, i.e., have an upstream-downstream relationship with each other, the effect of monitoring the gas to reach the minimum requirement and not exceed the maximum requirement can be achieved.

[0120] 2-3. <Gas Flow in the Gas Quantity Monitoring Unit>

[0121] With the gas collection unit 1 inserted into the insertion opening 110 of the gas quantity monitoring unit 10, gas is blown in through the air inlet 2 of the gas collection unit 1. The gas flows in the gas collection unit 1 as described above. Figure 3As shown, the gas enters the space section 411 from the inlet section 2, and after flowing through the first flow path L1, the second flow path L2, the third flow path L3, and the fourth flow path L4, it exits from the outlet section 3. The gas exiting from the outlet section 3 of the gas collection unit 1 directly enters the connecting section 111, and then enters the monitoring section 112 via the connecting section 111. The gas entering the monitoring section 112 passes through at least one side of the display area 21, thereby causing the display area 21 to change color upon contact with the gas. The gas that has passed through the display area 21 is then discharged through the vent 23. Figure 9 As shown by the dashed line, gas is blown in from the right-side air inlet 2 and flows in the direction indicated by the dashed line. Figure 9 The gas flows to the left side of the outlet section 3 and eventually exits from the display section 10 after passing through the gas flow monitoring unit 10. This allows for the monitoring of the amount of gas exiting from the outlet section 3.

[0122] 2-4. <Transparent and Non-transparent Areas>

[0123] In the gas quantity monitoring unit 10, at least the area in the gas passage area 11 corresponding to the display unit is a transparent area; for example, it could also be... Figure 8 Area B in the image is a transparent area, allowing users to clearly observe whether the displayed area changes color and whether it changes to the same degree as the reference area 22.

[0124] exist Figure 10 In the diagram, the dotted box on the left schematically shows the display unit (display area 21). By setting the area corresponding to the display unit as a transparent area B, it is easy to observe the color changes of the display area 21. Preferably, as shown... Figure 8 As shown, transparent areas B are formed in parts of the connecting portion 111, the monitoring portion 112, and the insertion opening 110, so that the user can observe the display portion whether the user has finished blowing air or during the blowing process.

[0125] In the gas volume monitoring unit 10, at least the area corresponding to the window 6 in the gas passage area 11 is designated as a covered portion. This prevents the window 6 from being contaminated, which could affect detection. Especially when a user blows air, their hand easily touches the window 6, potentially leaving stains that make it difficult to detect the test membrane 5 through the window 6. Therefore, by providing a covered portion, contamination of the window 6 can be prevented. Furthermore, in cases where the gas collection unit is sterilized with ultraviolet light, making the covered portion a non-transparent area also prevents the substance collected by the test membrane 5 from being killed by ultraviolet light. The non-transparent area can also be set to cover the entire circumference, thus eliminating the need to align the non-transparent area with the window 6.

[0126] exist Figure 10In the middle, the dashed box on the right schematically shows window 6, which is covered by the non-transparent area A.

[0127] As described above, the gas quantity monitoring unit 10 of this application can be formed by stacking resin layers. Since the resin layers are made of a transparent material, the stacked resin layers naturally constitute a transparent area, allowing the user to observe the display unit. If a non-transparent area is desired, for example, multiple resin layers (e.g., four layers, sequentially named 1st to 4th resin layers along the stacking direction) can be formed, with the display unit sandwiched between the two middle resin layers (between the 2nd and 3rd resin layers). Then, a light-shielding layer such as an aluminum foil layer (e.g., between the 1st and 2nd resin layers, and / or between the 3rd and 4th resin layers) can be provided between the middle resin layer and the outer resin layer, thereby forming a non-transparent area capable of blocking light. Of course, only the area corresponding to the display unit can be formed of a transparent resin material, while other parts can be formed of either a non-transparent or transparent material.

[0128] The non-transparent area only needs to cover the window 6. Therefore, a non-transparent area can be formed on the entire circumference of the gas volume monitoring unit 10, or a non-transparent area can be formed only on the side where the window 6 is located, and no non-transparent area can be formed on, for example, the back side of the window 6. In this case, two resin layers can be stacked only on the side where the non-transparent area is formed, and a light-shielding layer can be provided in the resin layer, while only one resin layer is stacked on the other side. In this case, the gas volume monitoring unit 10 has three resin layers (named 1st resin layer to 3rd resin layer in sequence along the stacking direction). A light-shielding layer is provided between the 1st resin layer and the 2nd resin layer, and a display part is sandwiched between the 2nd resin layer and the 3rd resin layer. At this time, spot welding is performed on the 2nd resin layer and the 3rd resin layer around the display part with a gap, and the display part is fixed between the 2nd resin layer and the 3rd resin layer.

[0129] Therefore, the gas quantity monitoring unit 10 can be formed by stacking resin layers. By forming resin layers of the same shape using transparent materials, productivity can be improved and costs can be saved.

[0130] When all resin layers are made of transparent material, a transparent area is formed by forming three or more resin layers and sandwiching the display unit between two of the resin layers. A non-transparent area is formed by placing a light-shielding layer between two resin layers in the area excluding the display unit. Specifically, in the case of three resin layers (named sequentially as resin layer 1 to resin layer 3 along the stacking direction), for example, the display unit is sandwiched between the second and third resin layers, and a light-shielding layer is placed between two resin layers (e.g., between the first and second resin layers) in the area excluding the display unit. In this structure, since the resin layers are made of transparent material, the transparent material constitutes a transparent area, so the display unit can be observed through at least the third resin layer. On the other hand, the light-shielding layer between the first and second resin layers constitutes a non-transparent area. Alternatively, if the light-shielding layer is small, it may not obstruct the display unit. In this case, the display unit can be observed through the first and second resin layers, in addition to the third resin layer, thus forming a display area as well.

[0131] The above explains the formation of the non-transparent region A. However, it is also possible to make the resin layer non-transparent by adding other materials (i.e., non-transparent materials) to the transparent material. In this case, transparent resin layers and non-transparent resin layers can be stacked to form a two-layer structure, with the display part sandwiched between the two layers.

[0132] The following uses Figures 13-15 To illustrate the structure of the aforementioned non-transparent region A and transparent region B, Figures 13-15 An embodiment of forming the non-transparent region A and the transparent region B of the present invention by laminating resin layers is illustrated schematically. It should be noted that... Figures 13-15 The resin layers F1 to F4 in the diagram are for illustrative purposes only and are shown as planar for ease of illustration. They do not represent the actual shape.

[0133] exist Figure 13 In this structure, a non-transparent resin layer F1 is formed, and a transparent resin layer F2 is formed. These resin layers F1 and F2 are stacked to form a two-layer structure, with the display unit sandwiched between them. Figure 13 The diagram also schematically illustrates the relationship between the two resin layers F1 and F2, the test membrane 5, and the window 6 after the gas quantity monitoring unit 10 is installed on the gas acquisition unit 1. The resin layer F1 forms a non-transparent area A, which can shield the window 6 located above the test membrane 5, while the resin layer F2 forms a transparent area B, which allows the display area 21 to be observed.

[0134] exist Figure 14In this structure, resin layers F1 to F3 are stacked to form a three-layer structure, all of which are made of transparent material. The display unit is sandwiched between adjacent resin layers F2 and F3. At least resin layers F1 and F2 constitute a transparent region B. Furthermore, the display region 21 can also be observed from the resin layer F3 side, meaning that resin layer F3 also constitutes a transparent region B. By providing a light-shielding layer S between two resin layers F1 and F2 in the area outside the display unit (display region 21), a non-transparent region A is formed.

[0135] exist Figure 15 In this structure, resin layers F1 to F4 are stacked to form a four-layer structure. All resin layers F1 to F4 are made of transparent material. The display unit is sandwiched between adjacent resin layers F2 and F3. At least resin layers F1 and F2 constitute a transparent region B. Furthermore, the display region 21 can also be observed from the resin layers F3 and F4 side, meaning that resin layers F3 and F4 also constitute a transparent region B. By providing light-shielding layers S in areas other than the display unit (display region 21), between two resin layers F1 and F2, and between two resin layers F3 and F4, a non-transparent region A is formed. Figure 15 The non-transparent area A can have a continuous shape in the circumferential direction, so that the window 6 can be reliably covered by the non-transparent area A without specifically aligning the non-transparent area A with the window 6. In addition, the "area other than the display part (display area 21)" described above refers to the area between three or more resin layers, excluding the area where the display part is sandwiched, and does not include other parts in the area where the display part is sandwiched.

[0136] Regarding this two-layer structure, as Figure 16 As shown, both the sealing areas 12 on both sides (where the two resin layers are in contact with each other) and the gas passage area 11 in the middle (where the two resin layers are separated from each other) are referred to as a two-layer structure, and the same applies to three-layer and four-layer structures. Furthermore, the term "layered resin layers" mentioned in this application is not limited to "resin layers stacked in contact with each other," as in... Figure 16 The structure shown, where the two sides are in contact and the middle is separated, also falls under the category of "stacked" as mentioned in this application, that is, stacked in a broad sense.

[0137] also, Figure 14 The light-shielding layer S can be appropriately extended to the position that blocks the display part. Figure 15 One of the two light-shielding layers S can be extended appropriately to block the display section, as long as the other light-shielding layer S does not block the display section, the user can still observe the display section.

[0138] The above describes the gas quantity monitoring unit 10 of this application; however, it is self-evident that various modifications can be made within the scope of this application.

[0139] For example, as described above, the gas quantity monitoring unit 10 is formed independently of the gas acquisition unit 1. However, the gas quantity monitoring unit 10 can also be formed integrally with the gas acquisition unit 1.

[0140] The above describes the structure where the display unit is located within the gas detection unit 10. However, the above-described structure of the gas quantity monitoring unit 10 can be omitted, and the display unit can be placed in the gas acquisition unit 1 instead. For example, the display unit can be placed in the space 411, the inlet 2, or the outlet 3 of the gas acquisition unit 1. In this case, the space 411, the inlet 2, or the outlet 3 can be appropriately reduced, and a gas flow path for gas to pass through the display unit can be provided in the space 411, the inlet 2, or the outlet 3. Alternatively, the display unit can be placed in the middle of any of the first flow path L1, the second flow path L2, the third flow path L3, or the fourth flow path L4 of the gas acquisition unit 1. In this case, the shape of the corresponding flow path can be appropriately changed as needed to obtain space for the display unit, allowing gas to flow through the display unit while simultaneously allowing gas to pass through it. Thus, the gas passes through the display unit while flowing through the corresponding gas flow path. When the display unit is located in any of the space section 411, air inlet section 2, first flow path L1, second flow path L2, or third flow path L3, the gas entering the gas collection unit 1 flows through the gas quantity monitoring unit first and then through the test membrane. When the display unit is located in the fourth flow path L4 or air outlet section 3, the gas entering the gas collection unit 1 flows through the test membrane first and then through the gas quantity monitoring unit. Thus, the amount of gas entering the gas collection unit 1 can be detected.

[0141] When the display unit is housed within the gas collection unit 1, a transparent area is provided at a corresponding location on the outer casing of the gas collection unit 1, allowing the display unit to be observed through this transparent area. This corresponding location can be either vertically aligned with the display unit or positioned closer to the air inlet than the display unit, allowing the user to observe the display unit while blowing air. Alternatively, transparent areas can be provided directly above and diagonally above the display unit, ensuring clear visibility of the display unit both during and after blowing air. In this configuration, an airflow intensity detection device can optionally be connected to the air outlet to detect the intensity of the incoming airflow. This airflow intensity detection device can be a sensor, a buzzer (e.g., a whistle), a fan, or similar device.

[0142] Furthermore, the display unit can also be located near the protrusions (first protrusion 422, second protrusion 423) in the gas collection unit 1. In this case, the notch 42 can be made longer as needed to provide sufficient space for the display unit, and the window 6 can be made longer accordingly. In this structure, the gas passes through the display unit before passing through the test membrane 5. Thus, the amount of gas is monitored by the display area of ​​the display unit contacting and reacting with the gas, thereby changing color. Moreover, in this structure, the transparent area can be omitted, and the display unit can be observed through the window 6. In other words, at least a portion of the window 6 forms a transparent area, and the display area 21 is located in the area that can be observed through the window 6.

[0143] The gas collection device of this application can also be configured as follows:

[0144] (1) An additional cover is provided, which is used to seal the gas outlet and gas inlet after the gas collection unit has collected the gas, to prevent additional impurities from entering and affecting subsequent detection. Furthermore, the cover can be connected to the gas inlet and outlet to prevent loss of the cover if it is not sealed. Alternatively, the gas collection unit may have a recess for the cover to be inserted into, so that the cover is inserted into the recess when not in use and removed when needed.

[0145] By using a cover to seal the air inlet and outlet, gas can be reliably stored in the gas collection unit for a long time. In this case, the gas collection unit can be stored and transported without worrying about gas leaking out, while also preventing other impurities from entering and affecting the collection results.

[0146] The cover can be used in structures where the display unit is located inside the gas collection unit 1, or in gas collection devices that are equipped with the gas quantity monitoring unit 10, as long as it does not interfere with or conflict with other components.

[0147] (2) In the gas volume monitoring unit 10 described in the above embodiment, a non-transparent area is provided as a cover. If the display is provided within the gas collection unit 1 instead of the gas volume monitoring unit 10, a separate cover may be provided to cover the window 6. This cover at least covers the area of ​​the window 6 used to detect the test membrane 5 (e.g., the detection area 65), or the portion through which the test membrane 5 can be detected, and the cover can be removed.

[0148] As an example, the cover can be a black sleeve that fits over the outside of the detection unit and covers the window. The position of the cover is not limited, as long as it covers the window 6. For example, the cover can fit over the detection unit 4 in the entire circumferential direction. In this case, even if the cover shifts along the circumference of the detection unit 4, it can still reliably cover the window 6. Alternatively, the cover can be longer in the length direction of the detection unit 4. In this case, even if the cover shifts along the length direction of the detection unit 4, it can still reliably cover the window 6.

[0149] The above illustrates the structure of the cover, but it is obvious that any other structure is possible as long as it covers the detection membrane 5 of the window 6. For example, a drawer-type cover can be provided, which has a cover sheet and guide portions on both sides of the cover sheet. The cover sheet is slidable and connected to a toggle part for the user to move with their finger. By moving this toggle part, the cover sheet can slide, thereby switching between covering and not covering the window 6. In addition, the color of the cover does not have to be black; any other color is acceptable as long as it can block ultraviolet light.

[0150] (3) In Figure 1 A colorimetric card can be placed in area D near the window 6. When the test membrane in the gas collection device is tested using an optical detection device, since the colorimetric card is placed near the window 6, the colorimetric card can be used to detect (observe) the test membrane 5 at the same time, making it easier to detect the test membrane 5.

[0151] (4) In Figure 1 The gas collection unit shown can also be supplemented with a virus filter layer that has a built-in virus interception function. The virus filter layer can be, for example, a polymer or lysozyme-based PP filter material or a charged diatomaceous earth layer. The polymer can be, for example, polypropylene meltblown fabric. The virus filter layer allows gas to pass through but not viruses, thereby intercepting viruses. The virus filter layer can be installed in the same way as a display unit in the gas collection unit 1; that is, the virus filter layer can be installed in the space 411, the air inlet 2, or the air outlet 3 of the gas collection unit 1, or it can be installed midway through any of the first flow path L1, the second flow path L2, the third flow path L3, or the fourth flow path L4 of the gas collection unit 1.

[0152] For example, the virus filter layer can be placed in the desiccant placement area within the space 411, or in the desiccant placement area of ​​other components. Furthermore, the virus filter layer is not limited to one; multiple virus filter layers can be provided, for example, virus filter layers can be provided upstream and downstream of the desiccant gas flow direction. Alternatively, the virus filter layer can be integrated into the test membrane; for example, the virus filter layer can serve as a substrate for the test membrane, or it can be used to fabricate part of the test membrane.

[0153] In addition, an identification module can be installed in the gas acquisition unit to identify the validity of the test membrane. If the test membrane fails due to contamination, exposure, or exceeding its expiration date, the information displayed by the identification module will differ from that displayed when it is intact; for example, it may change color. For instance, the identification module can identify the validity of the test membrane by using a material whose properties are most similar to those of the membrane most prone to failure, and will indicate the failure by displaying a color. The identification module and the test membrane are placed in the same environment, and the identification is based on changes in the surrounding environment caused by the test membrane's failure.

[0154] The location of the identification module is not particularly limited, as long as it is in the same environment as the test membrane. In this application, the identification module is placed in the gas collection unit, either integrated with the test membrane or set up independently. Alternatively, the identification module can be placed in a position that can be observed through the window 6, or in a position that can be observed through the transparent area of ​​the housing of the gas collection unit 1. It is also possible that, in addition to the window 6 and the transparent area of ​​the housing of the gas collection unit 1, the housing of the gas collection unit 1 also has a window for observing the identification module.

[0155] (5) In the display area, different colors are displayed to allow users to monitor whether a specified amount of gas has been blown in. However, other display content besides color is also acceptable, as long as different content can be displayed according to the amount of gas passing through.

[0156] (6) The aforementioned structure describes the following: the display area 21 is located in an area that can be observed through the window 6. In this case, the display area 21 can be located near the test membrane 5, or the display area can be integrated into the test membrane. In this case, the display area is set in the test membrane to monitor whether the amount of gas reaches the specified amount. For example, certain reagents are filled in the display area. These reagents can detect the amount of gas introduced. For example, these reagents can detect the amount of carbon dioxide and moisture. The amount of gas can be estimated based on the amount of carbon dioxide and moisture. In this case, it is preferable that the area in the test membrane 5 used to collect substances in the gas is separated from the display area by a dividing area, so that the user can clearly distinguish between the area for collecting substances in the gas and the display area, avoiding interference from the display area to the subsequent detection of the test membrane.

[0157] This invention also provides an application of the aforementioned gas collection device, including at least one of the following uses: qualitative or quantitative analysis of at least one of the contents of organic matter, carbon dioxide, carbon, and alcohol in a gas, or identification of preset characteristics of the gas. The content of these substances can be analyzed, followed by further detection. Through big data analysis, the correlation between certain characteristics and a specific event can be determined, and then the gas can be compared with that characteristic. If the gas contains that characteristic, it corresponds to that event. For example, drunk driving detection. Of course, the uses of the gas collection device are not limited to those listed; other gas analysis-based applications are also possible, which will not be listed here.

Claims

1. A gas collection device, characterized by, The gas collection unit (1) and the gas amount monitoring unit (10) are included, The gas collection unit has an inlet portion (2), an outlet portion (3), and a detection portion (4), The detection portion (4) has: a main body portion (41) having a flow path for gas flow inside; a test film (5) for collecting a substance in gas; and a window portion (6) for detecting the test film, the window portion (6) being detachably attached to the main body portion (41) in a manner of sandwiching the test film (5) between the window portion (6) and the main body portion (41), and having a flow path for gas flow inside, Gas can be blown from the inlet portion (2) into the detection portion (4) and sent out to the outlet portion (3) via the gas flow path inside the detection portion (4), The gas flow path is configured such that gas sent in via the inlet portion (2) is introduced into the test film (5) from the side of the test film (5) that is close to the window portion (6), and then introduced out of the test film (5) from the other side to the outlet portion (3), Gas that enters the gas collection unit from the inlet portion or gas that flows out from the outlet portion can enter the gas amount monitoring unit, and the gas amount monitoring unit monitors the amount of gas that enters the gas collection unit from the inlet portion or the amount of gas that flows out from the outlet portion, The gas amount monitoring unit has a display portion including a display region (21), Gas that flows into the gas amount monitoring unit passes through the display region, and the display region displays different contents according to the amount of gas that passes through, The gas amount monitoring unit has a transparent region (B) for observing the display region.

2. The gas collection device according to claim 1, wherein The display region displays different colors according to the amount of gas that passes through, When a predetermined amount or more of gas passes through, the display region displays a predetermined color.

3. The gas collection device according to claim 2, wherein The display portion further includes a reference region (22) that displays the predetermined color, or The display portion further includes a reference region (22) that displays the predetermined color and a division region provided between the display region and the reference region, the division region being colored differently from the display region and the reference region, or The display portion further includes a reference region, the display region is two, and the reference region is located between the two display regions in the flow direction of gas that flows into the gas amount monitoring unit, the reference region displays the predetermined color.

4. The gas collection device according to claim 1, wherein The gas amount monitoring unit is detachably attached to the gas collection unit from the side where the outlet portion of the gas collection unit is located.

5. The gas collection device according to claim 1, wherein The gas amount monitoring unit has a non-transparent region (A), ​ The non-transparent region shields the window portion of the gas collection unit in a state where the gas amount monitoring unit is attached to the gas collection unit.

6. The gas collection device according to claim 5, wherein The gas amount monitoring unit includes two resin layers stacked, One of the resin layers is formed of a transparent material to constitute the transparent region, and the other resin layer is formed of a non-transparent material to constitute the non-transparent region, The display portion is sandwiched between the two resin layers.

7. The gas collection device according to claim 5, wherein The gas amount monitoring unit includes: three or more resin layers stacked, all of which are formed of a transparent material, wherein the display portion is sandwiched between any two adjacent resin layers, a light-shielding layer provided between any two adjacent resin layers in a region other than the display portion to constitute the non-transparent region.

8. The gas collection device according to claim 4, wherein The gas amount monitoring unit has a gas passing region (11) and edge regions (12) on both sides of the gas passing region, The gas passing region and the edge regions on both sides extend in the length direction of the gas amount monitoring unit, and in a cross section of the gas amount monitoring unit, the gas passing region is located between the two edge regions.

9. The gas collection device according to any one of claims 1 to 8, wherein The display portion is provided in the middle of the gas flow path or in the gas inlet portion or the gas outlet portion so that gas flowing into the gas collection unit passes through the display region, wherein: The transparent region is provided in the housing of the gas collection unit so that the display portion can be observed through the transparent region.

10. The gas collection device according to any one of claims 1 to 8, wherein The display region is located in a region that can be observed through the window portion, and at least a part of the window portion constitutes the transparent region.

11. The gas collection device according to any one of claims 1 to 8, further comprising: a virus filter layer provided in the middle of the gas flow path or in the gas inlet portion or the gas outlet portion, the virus filter layer allowing gas to pass but not allowing viruses to pass.

12. The gas collection device according to any one of claims 1 to 8, further comprising: an identification module provided in the gas collection unit, the identification module displaying different contents when the test membrane is failed and when the test membrane is not failed, wherein The identification module is located in a position that can be observed through the window portion, or The identification module is located in a position that can be observed through the transparent region provided in the housing of the gas collection unit, or The housing of the gas collection unit has a window for observing the identification module.

13. Use of the gas collection device according to any one of claims 1 to 12, wherein comprise at least one of the following uses: qualitative or quantitative analysis of at least one of the content of organic substances, the content of carbon dioxide, the content of carbon elements and the content of alcohol in the gas, or for the identification of preset characteristics of the gas.

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