Flow sensor with simplified structure
A flow sensor, a technology with simplified structure, applied in the direction of volume/mass flow, measurement flow/mass flow, liquid/fluid solid measurement, etc. generated by mechanical effects, can solve the problems of difficult manufacturing and processing, complicated pressure detection channels, etc. Reduce the chance of turbulence, reduce pressure changes, and reduce the effect of airflow bends
Active Publication Date: 2020-01-21
宁波贝斯美德医用器械有限公司 +1
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Problems solved by technology
[0003] The pressure detection channel in the prior art is relatively complicated and not easy to manufacture and process. For example, the second housing part has a flange extension, and the flange extension is provided with a first slot and a second slot. The first connection point is laterally communicated with the first connection channel via the first slot, and the second connection point is laterally communicated with the second connection channel via the second slot hole
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[0021] see Figure 1 to Figure 8 As shown, in a preferred embodiment, the flow sensor of the present invention includes a first pipe 10, a second pipe 20 and an air flow diaphragm 30; the first pipe 10 has a first detection channel 11 and a first An airflow space 15, the first detection passage 11 directly communicates with a first extension pipe 13, the first airflow space 15 communicates with the first detection passage 11, the first detection passage 11 and the first extension pipe 13 integrally formed on the first pipe 10; the second pipe 20 has a second detection passage 21 and a second airflow space 25, the second detection passage 21 is connected to a second extension pipe 23, and the second airflow The space 25 communicates with the second detection channel 21, the second detection channel 21 and the second extension tube 23 are integrally formed on the second pipe part 20, and the second pipe part 20 is sealed and combined with the first pipe part 10, so that the The...
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A flow sensor with a simplified structure, including a first pipe, a second pipe and an air flow diaphragm; the first pipe has a first detection channel, the first detection channel is directly connected to a first extension tube ; the second pipe has a second detection channel, the second detection channel is connected to a second extension tube; the airflow membrane has an airflow fin, the airflow membrane is located between the first detection channel and the first In the middle of the two detection channels; wherein the first extension tube and the second extension tube are located on one side of the second tube, and the second tube is sealed and combined with the first tube so that the second detection channel can communicate with the first tube Two extension tubes.
Description
Technical field: [0001] The invention relates to a flow sensor, in particular to a flow sensor capable of detecting respiratory flow of a patient. The flow sensor has a first detection channel and a second detection channel, and an airflow fin is arranged inside the flow sensor. (flow flap), the airflow fin is located in the middle of the first detection channel and the second detection channel, a first extension of the first detection channel and a second extension of the second detection channel located on one side of the flow sensor. Background technique: [0002] The prior art such as the German Patent No. DE 102010040287A1 discloses mainly a flow sensor comprising a flow resistance body, a first housing part and a second housing part; the flow resistance body is arranged on the The middle of the first housing part and the second housing part; the first housing part has a first channel opening, a first connection point and a second connection point, and the second housi...
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IPC IPC(8): G01F1/34
CPCG01F1/34G01F1/40G01F1/363G01F1/50
Inventor 熊道存王旭祥
Owner 宁波贝斯美德医用器械有限公司