TWI672488B - Gas collection device and apparatus for gas collection and analysis - Google Patents

Abstract

A gas collection device for use with a gas analysis device includes a buffer unit, an absorber, and a collector. The buffer unit is configured to receive gas from a subject. The absorber is located downstream of the buffer unit and connected to the buffer unit, and is used to absorb moisture or carbon dioxide in the gas passing through the buffer unit to obtain a gas to be detected. The collector is located downstream of the absorber and is coupled to the absorber and is used to collect the gas to be detected passing through the absorber and to connect the gas analysis device. The invention also provides a gas collection and analysis device comprising the above gas collection device and gas analysis device.

Description

Gas collection device and gas collection and analysis equipment

The invention relates to a collecting device, in particular to a gas collecting device, and a gas collecting and analyzing device comprising the gas collecting device.

In the past, the gas analysis device comprises a hollow blow pipe having two opposite open ends, a dryer, and an analytical instrument connected to the dryer. One of the open ends of the air blowing tube is contained by a mouth of a subject to receive a gas (for example, ammonia gas) blown from the oral cavity of the subject, and the gas is introduced into the open end from the other end. In the dryer. The dryer is coupled to the other open end of the blow tube and contains a desiccant and is used to dry the gas passing through the blow tube. The analytical instrument is used to analyze the gas passing through the dryer. In addition, the gas analysis device may further include a pump as needed. The pump is coupled to the analytical instrument and is configured to generate suction to accelerate gas from the subject through the blow tube and the dryer into the analytical instrument.

Since the dryer is directly connected and communicates with the blow pipe, and in the During the analysis of the instrument, the subject must continue to supply gas, resulting in the subject being inhaled or in contact with the volatile gas generated by the desiccant during the supply of the gas, and there is a problem of discomfort. .

Accordingly, it is an object of the present invention to provide a gas collection device that overcomes at least one of the disadvantages of the prior art.

Thus, the gas collection device of the present invention is used in conjunction with a gas analysis device, and the gas collection device includes a buffer unit, an absorber, and a collector. The buffer unit is configured to receive gas from a subject. The absorber is located downstream of the buffer unit and is connected to the buffer unit and is used to absorb moisture or carbon dioxide in the gas passing through the buffer unit to obtain a gas to be detected. The collector is located downstream of the absorber and is coupled to the absorber and is used to collect the gas to be detected passing through the absorber and to connect the gas analysis device.

Another object of the invention is to provide a gas collection and analysis device.

The gas collection and analysis apparatus of the present invention comprises a gas collection device as described above; and a gas analysis device connected to the collector of the gas collection device.

1‧‧‧buffer unit

6‧‧‧Second transport unit

11‧‧‧ Container

61‧‧‧First duct

10‧‧‧ accommodating space

62‧‧‧Second delivery tube

101‧‧‧ openings

63‧‧‧ switch valve

12‧‧‧Blowing tube

7‧‧‧ Collector

121‧‧‧Connecting section

71‧‧‧ hollow tube

122‧‧‧Extension

70‧‧‧Collection space

13‧‧‧Dehumidifier

72‧‧‧Piston

14‧‧‧ catheter

8‧‧‧ Third transport unit

15‧‧‧ switch valve

81‧‧‧First duct

2‧‧‧First conveyor unit

82‧‧‧ switch valve

21‧‧‧First duct

83‧‧‧Second delivery tube

22‧‧‧Second duct

84‧‧‧ Third duct

3‧‧‧ wipe paper

9‧‧‧Gas analyzer

4‧‧‧ breathable absorbent parts

91‧‧‧Dryer

5‧‧‧ absorber

92‧‧‧Analytical Instruments

51‧‧‧ Container

93‧‧‧

50‧‧‧Moisture absorber

Other features and effects of the present invention will be apparent from the embodiments of the drawings, wherein: 1 is a schematic view of a first embodiment of a gas collection device of the present invention; FIG. 2 is a schematic view of a second embodiment of the gas collection device of the present invention; and FIG. 3 is a third embodiment of the gas collection device of the present invention. Figure 4 is a schematic view of a fourth embodiment of the gas collection device of the present invention; Figure 5 is a schematic view of a fifth embodiment of the gas collection device of the present invention; and Figure 6 is a gas collection device of the present invention. A schematic diagram of a sixth embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figure 1, a first embodiment of the gas collecting device of the present invention is used in combination with a gas analyzing device 9, and includes a buffer unit 1, a first conveying unit 2, a wiping paper 3, and a breathable suction. Wet member 4, an absorber 5, a second delivery unit 6, a collector 7, and a third delivery unit 8. The gas analysis device 9 comprises a dryer 91 connected to a third transport unit 8 of the gas collection device, an analytical instrument 92 connected to the dryer 91, and a pump 93 connected to the analytical instrument 92. The pump 93 is used to generate suction to accelerate gas from the subject through the dryer 91 into the analytical instrument 92. It should be noted that the dryer 91 of the gas analyzing device 9 is adjusted and set according to the content of moisture or carbon dioxide in the gas to enter the dryer 91, so that it is intended to enter the gas of the dryer 91. The dryer 91 is not necessary when the moisture or carbon dioxide content is appropriate.

The buffer unit 1 is for receiving gas that is blown through the oral cavity from a subject (not shown) (see the arrow in Fig. 1). The buffer unit 1 includes a container 11 and a blow pipe 12 that connects the container 11.

The container 11 is for example but not limited to a glass bottle or a compressible container. The compressible container is, for example but not limited to, a plastic bottle, or a sealed bag or the like. The container 11 has an accommodating space 10, and the accommodating space 10 has two openings 101 which are spaced apart and are located on the same side. In the first embodiment, the container 11 is a glass bottle.

The blow pipe 12 has a length of the engaging section 121 and a length extending from the one end of the engaging section 121. The engagement section 121 is located outside of the container 11 and is intended to be contained in the mouth of the subject. The extension 122 extends into the accommodating space 10 of the container 11 via one of the openings 101 of the accommodating space 10 .

The first conveying unit 2 is located between the container 11 and the absorber 5, and connects the container 11 and the absorber 5. The first conveying unit 2 has a first conveying pipe 21 and a second conveying pipe 22. The first delivery tube 21 has a first end extending through the other of the openings 101 of the accommodating space 10 into the accommodating space 10 of the container 11, and a first end opposite to the first end The second end of the container 11 is outside. The second delivery tube 22 has a first end connected to the second end of the first delivery tube 21 and a second end opposite the first end and extending into the absorber 5.

The wiping paper 3 covers the buffer located in the accommodating space 10 of the container 11 The outer surface of the extension 122 of the blow tube 12 of unit 1 is used to assess the amount of insufflation of the subject. The venting member 4 is disposed on the first end of the first conveying pipe 21 of the first conveying unit 2 located in the accommodating space 10 of the container 11, and is used for absorbing the accommodating space 10 of the container 11. And moisture in the gas. The breathable absorbent member 4 is, for example but not limited to, a breathable moisture absorbing nonwoven fabric. In the first embodiment, the breathable absorbent member 4 is a breathable moisture absorbing nonwoven fabric.

The absorber 5 is located downstream of the buffer unit 1 and is connected to the buffer unit 1 through the first transport unit 2 and is used to absorb moisture or carbon dioxide in the gas passing through the buffer unit 1 to obtain a gas to be detected. The absorber 5 includes a container 51 and a moisture absorbent 50 housed in the container 51. In this first embodiment, the moisture absorbent 50 is sodium hydroxide (NaOH).

The second conveying unit 6 includes a first conveying pipe 61, a second conveying pipe 62, and an opening and closing valve 63. The first delivery tube 61 has a first end extending into the absorber 5 and a second end opposite the first end and located outside the absorber 5. The second delivery tube 62 has a first end that connects the second end of the first delivery tube 61 and a second end that extends opposite the first end and that extends into the collector 7. The switching valve 63 is disposed between the first end and the second end of the second conveying pipe 62 and is used to control the gas to be tested to enter or exit the collector 7.

The collector 7 is located downstream of the absorber 5 and is connected to the absorber 5 through the second delivery unit 6 and is used to collect the gas to be detected passing through the absorber 5. The The collector 7 is for example but not limited to a glass bottle or a compressible collector. The compressible collector is for example but not limited to a plastic bottle, or a sealed bag or the like. In this first embodiment, the collector 7 is a sealed bag.

The third conveying unit 8 includes a first conveying pipe 81 and an opening and closing valve 82. The first delivery tube 81 has a first end extending into the collector 7, and a second end of the dryer 91 opposite the first end and located outside the collector 7 for connection to the gas analysis device 9. . The switching valve 82 is disposed outside the collector 7 and disposed between the first end and the second end of the first conveying pipe 81 and configured to control the gas to be tested to flow out of the collector 7.

In the first embodiment, during the collection, the buffer unit 1 can reduce the discomfort felt by the subject due to the volatile gas generated by the absorber 5, and the gas can be continuously blown. And through the gas permeable and absorbent member 4, the moisture in the container 11 and the gas to be detected in the gas can be reduced to avoid a decrease in the amount of the gas to be detected, or the moisture in the gas can be removed to increase the gas to be detected. The concentration, in addition, by compressing the collector 7, can provide a thrust to the gas to be detected, so that the gas to be detected can quickly leave the collector 7 to reduce the moisture in the collector 7 and the to-be-detected The gas acts to cause a problem that the amount of the gas to be detected is reduced, and at the same time, the gas to be detected can be quickly passed through the dryer 91 of the gas analysis device 9 to flow into the analytical instrument 92 for detection.

Referring to FIG. 2, a second embodiment of the gas collecting device of the present invention and the first The main difference of the embodiment is that there is no gas permeable absorbent member 4 in the buffer unit 1 of the second embodiment.

Referring to FIG. 3, a third embodiment of the gas collecting device of the present invention is different from the first embodiment in that the gas collecting device of the third embodiment does not have the wiping paper 3 and the gas permeable absorbent member 4, and The buffer unit 1 further includes a dehumidifying agent 13 disposed in the accommodating space 10 of the container 11. The desiccant 13 is, for example but not limited to, calcium chloride (CaCl ₂ ). In the third embodiment, through the dehumidifying agent 13, it is possible to reduce the moisture in the container 11 and the gas to be detected in the gas to avoid a decrease in the amount of the gas to be detected, or to remove the moisture in the gas. Increasing the concentration of the gas to be detected, and further, by compressing the collector 7, a thrust can be supplied to the gas to be detected, so that the gas to be detected can quickly leave the collector 7 to reduce the inside of the collector 7. The problem that the moisture reacts with the gas to be detected to reduce the amount of the gas to be detected is generated, and at the same time, the gas to be detected can be quickly passed through the dryer 91 of the gas analysis device 9 and flow into the analytical instrument 92 to Test.

Referring to Fig. 4, a fourth embodiment of the gas collecting device of the present invention is mainly different from the first embodiment in that the gas collecting device of the fourth embodiment does not have the wiping paper 3 and the gas permeable absorbent member 4. In the fourth embodiment, during the collection, the buffer unit 1 can reduce the discomfort felt by the subject due to the volatile gas generated by the absorber 5, and the gas can be continuously blown. Furthermore, by compressing the collector 7, a thrust can be supplied to the gas to be detected, so that the gas to be detected can be fast. Quickly leaving the collector 7 to reduce the problem that the moisture in the collector 7 acts on the gas to be detected to reduce the amount of the gas to be detected, and at the same time, the gas to be detected can be quickly passed through the gas. The dryer 91 of the analysis device 9 flows into the analytical instrument 92 for detection.

Referring to Figure 5, a fifth embodiment of the gas collection device of the present invention comprises a buffer unit 1, a first delivery unit 2, an absorber 5, a second delivery unit 6, a collector 7, and a third delivery Unit 8.

The buffer unit 1 is for receiving a gas that is blown through the oral cavity from a subject. The buffer unit 1 includes a container 11, a conduit 14, and an on-off valve 15. The container 11 is for example but not limited to a glass bottle or a compressible container. The compressible container is, for example but not limited to, a plastic bottle, or a sealed bag or the like. In the fifth embodiment, the container 11 is a sealed bag. The container 11 has an accommodating space 10, and the accommodating space 10 has an opening 101. The conduit 14 has a first end that extends through the opening 101 and extends into the receiving space 10 of the container 11, and a second end that is opposite the first end and that is outside the container 11. The switching valve 15 is coupled to the second end of the conduit 14 and is used to control the flow of gas into or out of the vessel 11.

The first conveying unit 2 is located between the container 11 and the absorber 5, and is connected to the switching valve 15 of the buffer unit 1 and the absorber 5. The first conveying unit 2 has a first conveying pipe 21. The first delivery tube 21 has a first end connected to the switching valve 15, and a second end opposite the first end and extending into the absorber 5.

The absorber 5 is located downstream of the buffer unit 1 and is connected to the buffer unit 1 through the first transport unit 2 and is used to absorb moisture or carbon dioxide in the gas passing through the buffer unit 1 to obtain a gas to be detected. The absorber 5 includes a container 51 and a moisture absorbent 50 housed in the container 51. In this fifth embodiment, the moisture absorbent 50 is sodium hydroxide (NaOH).

The second conveying unit 6 comprises a first conveying pipe 61. The first delivery tube 61 has a first end extending into the absorber 5 and a second end opposite the first end and located outside the absorber 5.

The collector 7 is located downstream of the absorber 5 and is adapted to receive the gas to be detected passing through the absorber 5. The collector 7 is for example but not limited to a glass bottle or a compressible collector. The compressible collector is for example but not limited to a plastic bottle, or a sealed bag or the like. In this fifth embodiment, the collector 7 is a sealed bag. In the fifth embodiment, during the collection, the buffer unit 1 is used to reduce the discomfort felt by the subject due to the volatile gas generated by the absorber 5, and the gas can be continuously blown out. By compressing the buffer unit 1, a thrust can be supplied to the gas in the buffer unit 1 so that the gas can quickly leave the buffer unit 1 to reduce moisture in the buffer unit 1 and the gas in the buffer unit 1. The problem of detecting the action of the gas to reduce the amount of the gas to be detected is generated, and at the same time, the absorber 5 can be quickly passed. Furthermore, by compressing the collector 7, a thrust can be supplied to the gas to be detected, so that the gas to be detected can quickly leave the collector 7 to reduce the moisture in the collector 7 and the to-be-checked The problem of the gas being measured to reduce the amount of the gas to be detected is generated, and at the same time, the gas to be detected can be quickly passed through the dryer 91 of the gas analysis device 9 and flow into the analytical instrument 92 for detection.

The third conveying unit 8 includes a first conveying pipe 81 and an opening and closing valve 82. The first delivery tube 81 has a first end extending into the collector 7, and a second end opposite the first end and located outside the collector 7. The switching valve 82 is connected to the second end of the first conveying pipe 81 of the third conveying unit 8 and the second end of the first conveying pipe 61 of the second conveying unit 6, and is used for controlling the inflow or outflow of the gas to be tested. Collector 7.

Referring to FIG. 6, a sixth embodiment of the gas collecting device of the present invention is different from the fifth embodiment in that the collector 7 of the sixth embodiment is a syringe, and the third conveying unit 8 includes a first The conveying pipe 81, the two switching valves 82, one second conveying pipe 83, and one third conveying pipe 84. The collector 7 has a hollow cylinder 71 defining a collection space 70 and a piston 72 moving relative to the hollow cylinder 71. A portion of the piston 72 is located within the collection space 70 of the hollow cylinder 71, with the remainder being located outside of the collection space 70. The first delivery tube 81 of the third delivery unit 8 has a first end and a second end opposite the first end. The second delivery tube 83 has a first end that connects the first end of the first delivery tube 81 and a second end that is opposite the first end and that connects the hollow tube 71 of the collector 7. The third conveying pipe 84 has a first end connecting the first end of the first conveying pipe 81 and the first end of the second conveying pipe 83, And a second end opposite the first end. One of the switching valves 82 is connected to the second end of the first conveying pipe 81 and the second end of the first conveying pipe 61 of the second conveying unit 6, and the other is connected to the third conveying pipe 84. The second end of the switch valve 82 is used to control the flow of the gas to be tested into and out of the collector 7.

In the sixth embodiment, during the collection, the buffer unit 1 is used to reduce the discomfort felt by the subject due to the volatile gas generated by the absorber 5, and the gas can be continuously blown out. By compressing the buffer unit 1, a thrust can be supplied to the gas in the buffer unit 1 so that the gas can quickly leave the buffer unit 1 to reduce moisture in the buffer unit 1 and the gas in the buffer unit 1. The problem of detecting the action of the gas to reduce the amount of the gas to be detected is generated, and at the same time, the absorber 5 can be quickly passed. Further, when the collector 7 of the gas collecting device is connected to the dryer 91 of the gas analyzing device 9, by compressing the collector 7, a thrust is supplied to the gas to be detected, so that the gas to be detected can be quickly separated. The collector 7 generates a problem of reducing the amount of the gas to be detected by reducing the moisture in the collector 7 and the gas to be detected, and at the same time, allowing the gas to be detected to pass through the gas analyzing device 9 quickly. The dryer 91 flows into the analytical instrument 92 for detection.

The gas collecting and analyzing device of the present invention comprises any one of the gas collecting devices of the first to sixth embodiments, and a gas analyzing device 9.

When the gas to be tested is collected using one of the gas collection devices of the first embodiment to the fourth embodiment, first, the dryer 91 of the gas analysis device 9 is connected. The switching valve 82 of the third conveying unit 8 opens the opening and closing valve 63 of the second conveying unit 6, and closes the opening and closing valve 82 of the third conveying unit 8. Next, a subject is allowed to hold the engaging section 121 of the air blowing tube 12 with a mouth and blown, and the blown gas enters the absorber 5 via the buffer unit 1, and the moisture absorbent passes through the absorber 5. 50 absorbs moisture to form a gas to be detected. The gas to be detected then enters the collector 7 via the second delivery unit 6. After the collection is completed, the on-off valve 63 of the second conveying unit 6 is closed to prevent the gas to be detected from flowing into the absorber 5, and the opening and closing valve 82 of the third conveying unit 8 is turned on, so that the to-be-detected The gas can flow out of the collector 7, and then the compressible collector 7 is compressed so that the gas to be detected can quickly flow into the analytical instrument 92 through the dryer 91 of the gas analysis device 9.

Or, after the collection is completed, the on-off valve 63 of the second transport unit 6 is closed and the on-off valve 82 of the third transport unit 8 is still maintained in a closed state, and then the collector 7 and the second transport unit are The second delivery tube 62 and the third delivery unit 8 of 6 are detached from the gas collection device. Next, the dryer 91 of the gas analysis device 9 is connected to the on-off valve 82 of the third delivery unit 8, and then the on-off valve 82 of the third delivery unit 8 is opened to enable the gas to be detected to flow out of the collector 7. Then, the collector 7 is compressed so that the gas to be detected can quickly leave the collector 7, while allowing the gas to be detected to quickly flow into the analytical instrument 92 through the dryer 91 of the gas analyzing device 9.

When the gas to be measured is collected using the gas collecting device of the fifth embodiment, First, the on-off valve 15 of the buffer unit 1 is turned on, and a blow pipe (not shown) is connected to the on-off valve 15. Then, a subject is allowed to hold the air tube with a mouth and blows air, and the blown gas enters the accommodating space 10 of the container 11 via the on-off valve 15 and the duct 14. Then, the switching valve 15 of the buffer unit 1 is closed so that the gas is confined in the accommodating space 10. Next, the blowing pipe is removed, and the first end of the first conveying pipe 21 of the first conveying unit 2 is connected to the switching valve 15. Then, the switching valve 15 is opened, and the container 11 is pressed, so that the gas in the container 11 quickly flows out of the container 11 and flows into the first delivery pipe 21 of the first conveying unit 2 quickly. Inside the absorber 5, the gas absorbs moisture through the moisture absorbent 50 of the absorber 5 to form a gas to be detected and quickly passes through the absorber 5. The gas to be detected enters the collector 7 via the second conveying unit 6 and the third conveying unit 8. After the collection is completed, the on-off valve 82 of the third delivery unit 8 is closed so that the gas to be detected is confined within the collector 7. Then, the collector 7 and the third conveying unit 8 are detached together from the gas collecting device. Next, the dryer 91 of the gas analysis device 9 is connected to the on-off valve 82 of the third delivery unit 8, and then the on-off valve 82 of the third delivery unit 8 is opened and the collector 7 is squeezed, and then compressed. The collector 7 enables the gas to be detected to quickly exit the collector 7 while allowing the gas to be detected to flow rapidly through the dryer 91 of the gas analysis device 9 into the analytical instrument 92.

When the gas to be tested is collected by using the gas collecting device of the sixth embodiment, first, the switching valve 15 of the buffer unit 1 is turned on, and a blowing pipe (not shown) is opened. The switching valve 15 is connected. Then, a subject is allowed to hold the air tube with a mouth and blows air, and the blown gas enters the accommodating space 10 of the container 11 via the on-off valve 15 and the duct 14. Then, the switching valve 15 of the buffer unit 1 is closed so that the gas is confined in the accommodating space 10. Next, the blowing pipe is removed, and the first end of the first conveying pipe 21 of the first conveying unit 2 is connected to the switching valve 15. Then, the on-off valve 15 is opened and the on-off valve 82 of the third delivery pipe 84 connected to the third delivery unit 8 is closed, and the dryer 91 of the gas analysis device 9 is connected to the third delivery pipe 84. Switching valve 82, then pulling the piston 72 of the collector 7 to drive the gas in the container 11 out of the container 11 and quickly flowing into the first delivery tube 21 through the first delivery unit 2 In the absorber 5, the gas absorbs moisture through the moisture absorbent 50 of the absorber 5 to form a gas to be detected and quickly passes through the absorber 5, and then the gas to be detected passes through the second conveying unit 6 and The first delivery tube 81 and the second delivery tube 83 of the third delivery unit 8 enter the collection space 70 of the hollow cylinder 71 of the collector 7. After the collection is completed, the on-off valve 82 of the first delivery pipe 81 connected to the third delivery unit 8 is closed so that the gas to be detected is confined within the collector 7. Then, the opening and closing valve 82 of the third delivery pipe 84 connected to the third conveying unit 8 is opened, and the piston 72 of the collector 7 is pushed to enable the gas to be detected to flow out of the hollow cylinder 71 of the collector 7. The gas analysis device 9 flows into the gas.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, and the patent scope and patent specification are applicable according to the present invention. The simple equivalent changes and modifications made by the content are still within the scope of the present invention.

Claims (10)

A gas collection device for use with a gas analysis device, comprising: a buffer unit for receiving gas from a mouth of a subject through a mouth; an absorber located downstream of the buffer unit and connected The buffer unit is configured to absorb moisture or carbon dioxide in the gas passing through the buffer unit to obtain a gas to be detected; a collector located downstream of the absorber and connected to the absorber and used to collect the absorber through the absorber The gas is detected and connected to the gas analysis device. The gas collecting device of claim 1, wherein the buffer unit comprises a container and a blowing pipe connecting the container; the container has an accommodating space, and the accommodating space has two spaced openings; The blow pipe has a length extending through one of the openings into the accommodating space; the gas collecting device further includes a first conveying unit connecting the container and the absorber, and the first conveying unit has a first delivery tube having a first end of the openings extending through the accommodating space of the container to the first end of the accommodating space. The gas collection device of claim 2, further comprising a gas permeable portion disposed in the first end of the first delivery tube of the first delivery unit for absorbing moisture in the buffer unit and moisture in the gas Absorbent parts. The gas collection device according to claim 3, further comprising a layer of wiper paper covering an extension of the air blowing tube of the buffer unit and for evaluating the amount of air blown by the subject. The gas collection device of claim 2, wherein the buffer unit further comprises a desiccant disposed in an accommodation space of the container. The gas collection device of claim 1, wherein the container is selected from a glass bottle or a compressible container. The gas collection device of claim 6, wherein the collector is selected from a glass bottle or a compressible collector. A gas collection and analysis apparatus comprising: a gas collection device according to any one of claims 1 to 7; and a gas analysis device connected to the collector of the gas collection device. The gas collection and analysis device of claim 8, wherein the gas analysis device comprises an analytical instrument. The gas collection and analysis device of claim 9, wherein the gas analysis device comprises a collector connected to the gas collection device and a dryer of the analytical instrument.