Portable device for measuring the concentration of at least one component in a gas exhaled by a breath fluid
A portable device, gas flow technology, used in the construction of gas analyzers, measuring devices, analyzing gas mixtures, etc., can solve problems such as time-consuming, unusable, and boring
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no. 1 approach
[0095] According to a first embodiment, two chambers are placed in the blowpipe 1a.
[0096] exist Figure 8 In this example, the nozzle 10 and the die 11 define a first chamber 101a to which the inlet 100 leads. Thus, the exhaled flow flows in the first chamber 101a. A bottom wall 102a disposed opposite to the inlet 100 closes the first chamber 101a.
[0097] The second chamber 110a is disposed within the first chamber 101a. The size of this second chamber 110a is preferably smaller than the size of the first chamber 101a. While the length of the first chamber 101a corresponds to the total length of the mouthpiece 10 and the cartridge 11, the length of the second chamber 110a corresponds to only a part (for example: 1 / 7) of this long portion. The same is true for the width of the second chamber 110a, corresponding to only a part (for example: 1 / 3) of the width of the first chamber 101a.
[0098] The second chamber 110a includes an inlet 111a, which opens into the first c...
no. 2 approach
[0145] According to the second embodiment, as Figure 10 , 11 , 14, the two chambers are placed in a common support 4b. In particular, this configuration further simplifies the shape of the blowpipe 1 b without affecting the accuracy of the measurement of the breath concentration carried out in the measurement container 3 .
[0146] exist Figure 12 and 13 In , the blowpipe 1b includes a chamber C provided with an inlet 100 and an outlet 113 . The cross-sections of the two orifices are identical or substantially identical. This configuration makes it possible to reduce the complexity of the blowpipe 1b compared to the blowpipe 1a of the first embodiment, and thus reduce the number of manufacturing steps. It is also possible to reduce the amount of material used to manufacture the part and thus reduce its cost price. On the contrary, the size of the outlet 113 is significantly larger than the size of the outlet 112 of the blowpipe 1a, which sends a larger part of the resp...
Embodiment approach 1
[0149] As in the first embodiment, the common support 4 b comprises a bore 410 leading to the container 3 and a bore 420 leading to the chamber 42 .
[0150] The bore 410 has a first opening 411b which leads to the second chamber 110b and a second opening 412 which opens into the housing 43 at right angles to the hole 332 . The bore 410 thus puts the second chamber 110 b in fluid communication with the container 3 . The orifice 411b is an outlet through which a part of the exhaled gas flow flowing in the second chamber 110b passes (equivalent to the orifice 112 of the blowpipe 1a in the first embodiment.
[0151] The borehole 420 has a first orifice 421 leading to the second chamber 110 b and a second orifice 422 leading to the chamber 42 .
[0152] The outer side wall of the first chamber 101b comprises an outlet 122b through which the part of the breathing airflow that does not flow in the measuring container 3 is discharged into the ambient air. For the same reason given ...
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Abstract
Description
Claims
Application Information
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