CN221106655U - Flow sensor and anesthesia machine - Google Patents
Flow sensor and anesthesia machine Download PDFInfo
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- CN221106655U CN221106655U CN202322472367.0U CN202322472367U CN221106655U CN 221106655 U CN221106655 U CN 221106655U CN 202322472367 U CN202322472367 U CN 202322472367U CN 221106655 U CN221106655 U CN 221106655U
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- 206010002091 Anaesthesia Diseases 0.000 title claims abstract description 35
- 230000037005 anaesthesia Effects 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 44
- 238000005259 measurement Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 2
- 230000003444 anaesthetic effect Effects 0.000 claims 3
- 238000009434 installation Methods 0.000 abstract description 16
- 239000007789 gas Substances 0.000 description 64
- 238000009423 ventilation Methods 0.000 description 12
- 238000007789 sealing Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Abstract
The utility model provides a flow sensor and an anesthesia machine, wherein the flow sensor comprises a first support frame, a measuring diaphragm and a second support frame which are sequentially and adjacently arranged, the first support frame is provided with a first air passing channel and a first sampling hole which are mutually communicated, the second support frame is provided with a second air passing channel and a second sampling hole which are mutually communicated, the measuring diaphragm is provided with a gap, the first air passing channel and the second air passing channel are mutually communicated through the gap, and the first sampling hole and the second sampling hole are respectively used for being communicated with sampling equipment; the first support frame is provided with first foolproof groove, and the second support frame is provided with the second foolproof groove, and first foolproof groove and second foolproof groove are used for preventing that flow sensor from adorning the reflection. Because the first foolproof groove and the second foolproof groove are respectively arranged at the two ends of the flow sensor, when an operator installs the flow sensor after taking the flow sensor reversely, the operator cannot install the flow sensor, so that the operator can timely find out and ensure complete and correct installation.
Description
Technical Field
The utility model relates to the technical field of flow sensors of anesthesia machines, in particular to a flow sensor and an anesthesia machine.
Background
In anesthesia machine products, it is desirable to monitor flow in the patient circuit respiratory system to manage the tidal volume of the patient, and for patient circuits that use differential pressure flow sensors, flow is indirectly obtained by monitoring the difference in pressure across the flow sensor diaphragm. Therefore, a pipeline is needed to connect the sampling holes on two sides of the flow sensor diaphragm with the board card of the circuit board inside the anesthesia machine, so that the monitoring of the flow in the respiratory system of the patient can be realized.
In the prior art, the flow sensor is equivalent to a section of pipeline, the flow sensor is arranged on the pipeline through sleeving or other joints, the flow sensor is provided with an arrow mark installation sequence for an installer to check so as to remind the installer, but in the actual installation process, the condition of installation errors is caused by errors or carelessness, and the measurement data is inaccurate.
Therefore, it is necessary to provide a new flow sensor and anesthesia machine to solve the above-mentioned technical problems.
Disclosure of utility model
The utility model mainly aims to provide a flow sensor and an anesthesia machine, and aims to solve the technical problem that the installation of the flow sensor is easy to make mistakes in the prior art.
According to one aspect, the utility model provides a flow sensor, which comprises a first support frame, a measuring diaphragm and a second support frame, wherein the first support frame, the measuring diaphragm and the second support frame are sequentially and adjacently arranged, the first support frame is provided with a first air passing channel and a first sampling hole which are mutually communicated, the second support frame is provided with a second air passing channel and a second sampling hole which are mutually communicated, the measuring diaphragm is provided with a gap, the first air passing channel and the second air passing channel are mutually communicated through the gap, and the first sampling hole and the second sampling hole are respectively used for being communicated with sampling equipment; the first support frame is provided with a first fool-proof groove, and the second support frame is provided with a second fool-proof groove; the first fool-proof groove can be used for being installed at an expiration end of the anesthesia machine and an inspiration end of the anesthesia machine, the second fool-proof groove is used for being communicated with a pipeline, and the first fool-proof groove and the second fool-proof groove are used for preventing the flow sensor from being reversely installed.
In an embodiment, the structure of the first fool-proof slot is different from the structure of the second fool-proof slot.
In an embodiment, the first fool-proof slot comprises at least one first sub-mounting slot, and the second fool-proof slot comprises at least one second sub-mounting slot, the number of first sub-mounting slots being different from the number of second sub-mounting slots.
In an embodiment, a first mounting hole is further formed in the measurement diaphragm, a second mounting hole is formed in one side, close to the measurement diaphragm, of the first support frame, a protruding column is formed in one side, close to the measurement diaphragm, of the second support frame, and the protruding column penetrates through the first mounting hole and is mounted in the second mounting hole.
In an embodiment, the number of the first mounting holes is a plurality of, the number of the second mounting holes is a plurality of, the number of the protruding columns is a plurality of, and the number of the protruding columns, the number of the first mounting holes and the number of the second mounting holes are equal and are arranged in a one-to-one correspondence manner.
In one embodiment, the measuring diaphragm is an elastic measuring diaphragm.
In an embodiment, the flow sensor further comprises a ventilation pipe, the ventilation pipe is mounted on the inner wall of the first air passing channel, a ventilation hole is formed in the ventilation pipe, and two ends of the ventilation hole are respectively communicated with the first air passing channel and the first sampling hole.
In an embodiment, the flow sensor further comprises a reinforcing plate, and two ends of the reinforcing plate are respectively connected with the inner wall of the first air passing channel and the ventilation pipeline.
In an embodiment, a distance between an end of the first support frame away from the measuring diaphragm and an end of the second support frame away from the measuring diaphragm ranges from 12.1mm to 12.2mm.
According to another aspect, the utility model further provides an anesthesia machine, which comprises an anesthesia machine and the flow sensors, wherein the anesthesia machine comprises an inhalation end and an exhalation end, the number of the flow sensors is two, a first foolproof groove of one flow sensor is arranged at the inhalation end, and a first foolproof groove of the other flow sensor is arranged at the exhalation end.
In the above scheme, the flow sensor comprises a first support frame, a measuring diaphragm and a second support frame which are sequentially attached and arranged, the first support frame is provided with a first air passing channel and a first sampling hole which are mutually communicated, the second support frame is provided with a second air passing channel and a second sampling hole which are mutually communicated, the measuring diaphragm is provided with a gap, the first air passing channel and the second air passing channel are mutually communicated through the gap, and the first sampling hole and the second sampling hole are respectively used for being communicated with the sampling equipment; the first support frame is provided with a first fool-proof groove, and the second support frame is provided with a second fool-proof groove; the first fool-proof groove can be used for being installed at the expiration end of the anesthesia machine and the inspiration end of the anesthesia machine, the second fool-proof groove is used for being communicated with a pipeline, and the first fool-proof groove and the second fool-proof groove are used for preventing the reverse installation of the flow sensor. Specifically, a first fool-proof groove on one flow sensor is aligned with an expiration end on an anesthesia machine, so that the first fool-proof groove can be clamped with a corresponding clamping piece on the expiration end, then a pipeline is aligned with a second fool-proof groove on the flow sensor, and a clamping piece corresponding to the second fool-proof groove on the pipeline is clamped with the second fool-proof groove; the first fool-proof groove on the other flow sensor is aligned with the air suction end of the anesthesia machine, so that the first fool-proof groove can be clamped with the corresponding clamping piece on the air suction end, then the pipeline is aligned with the second fool-proof groove on the flow sensor, and the clamping piece corresponding to the second fool-proof groove on the pipeline is clamped with the second fool-proof groove, so that the installation is completed. When a user inhales, gas flows from the gas suction end to the gas suction end in the flow sensor, the gas firstly enters the first gas passing channel, only part of the gas in the first gas passing channel flows into the second gas passing channel through the gap due to the gap arranged on the measuring diaphragm, so that a pressure difference is generated between the first gas passing channel and the second gas passing channel, and the first sampling hole communicated with the first gas passing channel and the second sampling hole communicated with the second gas passing channel are communicated with the sampling device, so that the pressure in the first gas passing channel and the pressure in the second gas passing channel can be measured respectively. When a user exhales, gas flows from the pipeline to the flow sensor at the exhaling end, the gas firstly enters the second gas passing channel, and only part of the gas in the second gas passing channel flows into the first gas passing channel through the gap due to the gap arranged on the measuring diaphragm, so that a pressure difference is generated between the second gas passing channel and the first gas passing channel, and a second sampling hole communicated with the second gas passing channel and a first sampling hole communicated with the first gas passing channel are both communicated with the sampling device, so that the pressure in the first gas passing channel and the pressure in the second gas passing channel can be measured respectively.
Then according to the following formula:
Wherein Q is the flow of gas in the pipeline, K is the flow coefficient, A is the cross-sectional area of the pipeline, P 1 and P 2 are the pressures on two sides of the measuring diaphragm along the moving direction of the gas, ρ is the density of the gas, and thus the flow in the pipeline can be obtained.
Because the first foolproof groove and the second foolproof groove are respectively arranged at the two ends of the flow sensor, when an operator installs the flow sensor after taking the flow sensor reversely, the operator cannot install the flow sensor, and then the operator can find that the flow sensor is taken reversely, so that the flow sensor is reinstalled. Compared with the situation that in the prior art, an installation arrow is arranged on the flow sensor, and the situation that the installation is wrong due to insufficient concentration of operators is easy to occur, the structure of the utility model can ensure that the flow sensor which is taken reversely cannot be installed when the operators are installed by taking the reverse flow sensor due to insufficient concentration of the operators, so that the operators can timely find out and ensure complete and correct installation.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flow sensor according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a first support frame according to an embodiment of the present utility model;
Fig. 3 is a schematic structural view of a second support frame according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a measuring diaphragm according to an embodiment of the present utility model;
fig. 5 is an exploded view of a flow sensor according to an embodiment of the present utility model.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | First support frame | 2 | Measuring diaphragm |
| 3 | Second support frame | 11 | First overgas passage |
| 12 | First sampling hole | 31 | Second overgas passage |
| 32 | Second sampling hole | 21 | Gap(s) |
| 13 | First fool-proof groove | 33 | Second fool-proof groove |
| 22 | First mounting hole | 34 | Convex column |
| 14 | Second mounting hole | 4 | Ventilating duct |
| 5 | Reinforcing plate | 15 | Sealing groove |
| 6 | Sealing ring | 100 | Flow sensor |
The achievement of the object, functional features and advantages of the present utility model will be further described with reference to the drawings in connection with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Referring to fig. 1 to 5, the present utility model provides a flow sensor 100, which includes a first support frame 1, a measuring diaphragm 2 and a second support frame 3 that are sequentially attached to each other, wherein the first support frame 1 is formed with a first air passing channel 11 and a first sampling hole 12 that are mutually communicated, the second support frame 3 is formed with a second air passing channel 31 and a second sampling hole 32 that are mutually communicated, the measuring diaphragm 2 is formed with a slit 21, the first air passing channel 11 and the second air passing channel 31 are mutually communicated through the slit 21, and the first sampling hole 12 and the second sampling hole 32 are respectively used for communicating with a sampling device; the first support frame 1 is provided with a first fool-proof groove 13, and the second support frame 3 is provided with a second fool-proof groove 33; the first fool-proof slot 13 can be used for being installed at an expiration end of an anesthesia machine and an inspiration end of the anesthesia machine, the second fool-proof slot 33 is used for being communicated with a pipeline, and the first fool-proof slot 13 and the second fool-proof slot 33 prevent the reverse installation of a flow sensor. Specifically, the first fool-proof slot 13 on one flow sensor 100 is aligned to the exhalation end of the anesthesia machine, so that the first fool-proof slot 13 can be clamped with a corresponding clamping piece on the exhalation end, then the pipeline is aligned to the second fool-proof slot 33 on the flow sensor 100, and a clamping piece corresponding to the second fool-proof slot 33 on the pipeline is clamped with the second fool-proof slot 33; aligning a first fool-proof groove 13 on the other flow sensor 100 with an air suction end of the anesthesia machine, enabling the first fool-proof groove 13 to be clamped with a corresponding clamping piece on the air suction end, aligning a pipeline with a second fool-proof groove 33 on the flow sensor 100, and enabling a clamping piece corresponding to the second fool-proof groove 33 on the pipeline to be clamped with the second fool-proof groove 33, so that installation is completed; in a specific operation, when a user inhales, gas flows from the inhaling end to the flow sensor 100 at the inhaling end, the gas firstly enters the first gas passing channel 11, and because the measuring diaphragm 2 is provided with the gap 21, part of the gas in the first gas passing channel 11 flows into the second gas passing channel 31 through the gap 21, a pressure difference is generated between the first gas passing channel 11 and the second gas passing channel 31, and the first sampling hole 12 communicated with the first gas passing channel 11 and the second sampling hole 32 communicated with the second gas passing channel 31 are communicated with the sampling device, so that the pressures in the first gas passing channel 11 and the second gas passing channel 31 can be measured respectively. When a user exhales, the gas flows from the pipeline to the flow sensor 100 at the exhaling end, and firstly enters the second gas passing channel 31, and only part of the gas in the second gas passing channel 31 flows into the first gas passing channel 11 through the gap 21 due to the fact that the gap 21 is arranged on the measuring diaphragm 2, so that a pressure difference is generated between the second gas passing channel 31 and the first gas passing channel 11, and a second sampling hole 32 communicated with the second gas passing channel 31 and a first sampling hole 12 communicated with the first gas passing channel 11 are communicated with the sampling device, so that the pressures in the first gas passing channel 11 and the second gas passing channel 31 can be measured respectively.
Then according to the following formula:
Wherein Q is the flow of gas in the pipeline, K is the flow coefficient, A is the cross-sectional area of the pipeline, P 1 and P 2 are the pressures on two sides of the diaphragm 2 measured along the moving direction of the gas, ρ is the density of the gas, and thus the flow in the pipeline can be obtained.
Because the first foolproof slot 13 and the second foolproof slot 33 are respectively arranged at two ends of the flow sensor 100, and the widths or shapes of the first foolproof slot 13 and the second foolproof slot 33 are different, the first foolproof slot 13 can be guaranteed to be connected with only the exhaling end or the inhaling end of the anesthesia machine, the second foolproof slot 33 can be guaranteed to be connected with only the exhaling end or the inhaling end pipeline of the anesthesia machine, when an operator installs the flow sensor 100 after taking the back, the operator cannot install the flow sensor 100 on the anesthesia machine, and the operator can find that the flow sensor 100 is taken back, so that the operator is reinstalled. In this way, compared with the situation that the installation arrow is set on the flow sensor 100 in the prior art, the installation error caused by insufficient concentration of the operator is easy to occur, and the structure of the embodiment can ensure that the flow sensor 100 which is taken reversely cannot be installed when the operator is installed by taking the reverse flow sensor 100 because the operator is not concentrated enough, so that the operator can timely find out and ensure the complete and correct installation.
Further, a control system is further arranged in the anesthesia machine, the measuring diaphragm 2 is in signal connection with the control system, the measuring diaphragm 2 converts the contacted inhaled and exhaled gas flow into an electric signal, and the electric signal is sent to the control system to complete detection and display of the inhaled and exhaled tidal volume, minute ventilation volume and flow rate.
According to different functions and designs of the anesthesia machine, the detection value of the flow sensor 100 not only provides display, but also plays a role in determining the control, alarm and the like of the anesthesia machine, for example, the flow sensor 100 feeds the measured actual value to a control system to be compared with a preset value, and the error between the two is used for controlling a servo valve to regulate the flow of inhaled and exhaled air; the signals generated by the air and oxygen flow sensors 100 mounted at the front end of the inhalation system can assist the control system in controlling the valve to provide the oxygen concentration desired by the user.
In an embodiment, the structure of the first fool-proof slot 13 is different from the structure of the second fool-proof slot 33; when the structure of the first fool-proof slot 13 is different from that of the second fool-proof slot 33, the first fool-proof slot 13 cannot correspond to the installation position on the anesthesia machine, and the second fool-proof slot 33 cannot correspond to the installation position on the pipeline, so that the flow sensor 100 cannot be installed; the structural differences include different shapes, different widths, different positions, and the like.
In an embodiment, the first fool-proof slot 13 comprises at least one first sub-mounting slot and the second fool-proof slot 33 comprises at least one second sub-mounting slot, the number of first sub-mounting slots being different from the number of second sub-mounting slots. The first fool-proof slot 13 includes a plurality of first sub-mounting slots, the second fool-proof slot 33 includes a plurality of second sub-mounting slots, and when the flow sensor is taken reversely, the quantity cannot be corresponding, so that the flow sensor 100 cannot be mounted, and the embodiment can ensure that the operator cannot be mounted in error. The first sub-mount groove and the second sub-mount groove are also different in structure. The structural differences include different shapes, different widths, different positions, and the like.
Referring to fig. 2 to 4, in an embodiment, the measuring diaphragm 2 is further formed with a first mounting hole 22, a second mounting hole 14 is formed on a side of the first support frame 1 adjacent to the measuring diaphragm 2, a boss 34 is formed on a side of the second support frame 3 adjacent to the measuring diaphragm 2, and the boss 34 is mounted to the second mounting hole 14 through the first mounting hole 22. Specifically, when the flow sensor 100 is assembled, the protruding columns 34 on the second support member pass through the first mounting holes 22, and then the protruding columns 34 are clamped in the second mounting holes 14, so that the measuring diaphragm 2 can be completely fixed between the first support frame 1 and the second support frame 3, and the measuring diaphragm 2 is prevented from being separated.
Referring to fig. 2 to 4, in an embodiment, the number of the first mounting holes 22 is plural, the number of the second mounting holes 14 is plural, the number of the protruding columns 34 is plural, and the number of the plurality of protruding columns 34, the plurality of first mounting holes 22 and the plurality of second mounting holes 14 are equal and are arranged in a one-to-one correspondence. By providing the plurality of bosses 34, the plurality of first mounting holes 22, and the plurality of second mounting holes 14 in one-to-one correspondence, the measurement diaphragm 2 can be further fixed between the first support frame 1 and the second support frame 3, and the measurement diaphragm 2 can be further prevented from being detached from the flow sensor 100.
In one embodiment, the measuring diaphragm 2 is an elastic measuring diaphragm. When the gas flows in the flow sensor 100, the measuring diaphragm 2 is blown to deform when the gas flow is too large, if the measuring diaphragm 2 has no elasticity, when the gas does not flow in the flow sensor 100, the gap 21 on the measuring diaphragm 2 becomes large, and errors occur in the subsequent measurement; if the measuring diaphragm 2 is an elastic measuring diaphragm 2, when no gas flows in the flow sensor 100, the measuring diaphragm 2 will return to the original state due to elasticity, so that no error occurs in the subsequent measurement.
Referring to fig. 1, 2 and 5, in an embodiment, the flow sensor 100 further includes a vent pipe 4, the vent pipe 4 is mounted on an inner wall of the first air passing channel 11, the vent pipe 4 is formed with a vent hole, and two ends of the vent hole are respectively communicated with the first air passing channel 11 and the first sampling hole 12. Through setting up ventilation pipe 4, can be with the accurate first sampling hole 12 of leading-in of gas in the first overgas passageway 11, can also stabilize the atmospheric pressure that gets into first collection hole, stable measuring result.
Referring to fig. 1, 2 and 5, in an embodiment, the flow sensor 100 further includes a reinforcing plate 5, and both ends of the reinforcing plate 5 are respectively connected to the inner wall of the first gas passing channel 11 and the gas passing pipe 4. The reinforcing plate 5 can firmly install the ventilation pipeline 4 in the first air passage 11, so that the ventilation pipeline can not fall easily after collision.
Referring to fig. 1, 2 and 5, in one embodiment, the number of the reinforcing plates 5 is at least two, and two reinforcing plates 5 are respectively installed at both sides of the ventilation duct 4. By providing the plurality of reinforcing plates 5, the mounting firmness of the ventilation duct 4 can be further enhanced, and the structural strength of the flow sensor 100 can be further improved.
Referring to fig. 5, in an embodiment, the outer periphery of the first support frame 1 is further provided with a sealing groove 15, and the flow sensor 100 further includes a sealing ring 6, where the sealing ring 6 is mounted on the sealing groove 15. The provision of the seal groove 15 prevents gas from escaping from the gap between the first support frame 1 and the second support frame 3.
In an embodiment, the distance between the end of the first support frame 1 remote from the measuring diaphragm 2 and the end of the second support frame 3 remote from the measuring diaphragm 2 is in the range of 12.1mm to 12.2mm. In the prior art, the typical length dimension of the flow sensor 100 is about 60mm, which results in an increase in the overall structure, while the unnecessary structure is reduced in this embodiment, and the length of the flow sensor 100 is reduced as much as possible while satisfying the function of flow measurement. The length of the entire flow sensor 100 can be as small as 12.1mm.
According to another aspect, the present utility model further provides an anesthesia machine, including an anesthesia machine and the above-mentioned flow sensor 100, where the anesthesia machine includes an inhalation end and an exhalation end, and the number of the flow sensors 100 is two, where the first foolproof slot 13 of one flow sensor 100 is installed at the inhalation end, and where the first foolproof slot 13 of another flow sensor 100 is installed at the exhalation end. Since the anesthesia machine includes all embodiments of the flow sensor 100, at least all the advantages of all the embodiments are provided, and will not be described in detail herein.
The foregoing is only an optional embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The flow sensor is characterized by comprising a first support frame, a measuring diaphragm and a second support frame which are sequentially attached to each other, wherein the first support frame is provided with a first air passing channel and a first sampling hole which are communicated with each other, the second support frame is provided with a second air passing channel and a second sampling hole which are communicated with each other, the measuring diaphragm is provided with a gap, the first air passing channel and the second air passing channel are communicated with each other through the gap, and the first sampling hole and the second sampling hole are respectively used for being communicated with sampling equipment; the first support frame is provided with a first fool-proof groove, and the second support frame is provided with a second fool-proof groove; the first fool-proof groove can be used for being installed at an expiration end of the anesthesia machine and an inspiration end of the anesthesia machine, the second fool-proof groove is used for being communicated with a pipeline, and the first fool-proof groove and the second fool-proof groove are used for preventing the flow sensor from being reversely installed.
2. The flow sensor of claim 1, wherein the first fool-proof slot has a different structure than the second fool-proof slot.
3. The flow sensor of claim 1, wherein the first fool-proof slot comprises at least one first sub-mounting slot and the second fool-proof slot comprises at least one second sub-mounting slot, the number of first sub-mounting slots being different than the number of second sub-mounting slots.
4. The flow sensor of claim 1, wherein the measurement diaphragm further has a first mounting hole formed therein, the first support bracket has a second mounting hole formed therein on a side thereof adjacent to the measurement diaphragm, the second support bracket has a boss formed therein on a side thereof adjacent to the measurement diaphragm, and the boss is mounted to the second mounting hole through the first mounting hole.
5. The flow sensor of claim 4, wherein the number of first mounting holes is a plurality of second mounting holes, the number of posts is a plurality of posts, and the number of posts, the number of first mounting holes, and the number of second mounting holes are equal and are arranged in a one-to-one correspondence.
6. The flow sensor of claim 1, wherein the measurement diaphragm is an elastic measurement diaphragm.
7. The flow sensor of claim 1, further comprising a vent conduit mounted to an inner wall of the first overgas passage, the vent conduit being formed with a vent hole, both ends of the vent hole being in communication with the first overgas passage and the first sampling hole, respectively.
8. The flow sensor of claim 7, further comprising a reinforcing plate, wherein both ends of the reinforcing plate are connected to the inner wall of the first gas passing channel and the vent pipe, respectively.
9. The flow sensor of claim 1, wherein an end of the first support frame remote from the measurement diaphragm is in a range of 12.1mm to 12.2mm from an end of the second support frame remote from the measurement diaphragm.
10. An anaesthetic machine comprising an anaesthetic machine and a flow sensor according to any one of claims 1 to 9 wherein the anaesthetic machine comprises an inhalation end and an exhalation end, the number of flow sensors being two, wherein a first fool-proof slot of one flow sensor is mounted at the inhalation end and wherein a first fool-proof slot of the other flow sensor is mounted at the exhalation end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472367.0U CN221106655U (en) | 2023-09-11 | 2023-09-11 | Flow sensor and anesthesia machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472367.0U CN221106655U (en) | 2023-09-11 | 2023-09-11 | Flow sensor and anesthesia machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221106655U true CN221106655U (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322472367.0U Active CN221106655U (en) | 2023-09-11 | 2023-09-11 | Flow sensor and anesthesia machine |
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| CN (1) | CN221106655U (en) |
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- 2023-09-11 CN CN202322472367.0U patent/CN221106655U/en active Active
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