CN205580530U - Injection formula flow detection device for medical instruments - Google Patents
Injection formula flow detection device for medical instruments Download PDFInfo
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- CN205580530U CN205580530U CN201620232261.0U CN201620232261U CN205580530U CN 205580530 U CN205580530 U CN 205580530U CN 201620232261 U CN201620232261 U CN 201620232261U CN 205580530 U CN205580530 U CN 205580530U
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- tube body
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- straight tube
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- awl
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Abstract
The utility model provides an injection formula flow detection device for medical instruments which characterized in that: injection body (2) in including a straight pipe body (1) and locating straight pipe body (1), the setting of straight pipe body (1) longshore current body flow direction, spray the body (2) including straight section shape middle part (201) and lie in the injection awl (202) at straight section shape middle part (201) both ends in the fluid flow orientation, two spray awl (202) symmetry around in the fluid flow orientation, is the cone apex angle alpha who sprays awl (202) 10 50 it gathers compression zone (4) to form the air current between the straight section shape middle part (201) of straight pipe body (1) the inner wall and the injection body (2), straight pipe body (1) has upward been seted up the upper reaches corresponding to department at the bottom of the awl of an injection awl (202) and has been got pressure mouthful (102), has just seted up low reaches corresponding to department at the bottom of awl of another injection awl and has got pressure mouthful (103). The utility model discloses the medical instruments has been satisfied to the precision that flow detection device provided is high, the error is little and miniaturized requirement.
Description
Technical field
This utility model relates to field of medical device, particularly relates to Medical Instruments injecting type flow detector, and described Medical Instruments refers to that respirator, oxygenerator, anesthetic machine etc. need to carry out the instrument of flow detection.
Background technology
At present, use on the market most flow detectors measure laminar flow structure use have V taper, venturi, orifice plate etc., after being front by measurement laminar flow structure throttling and throttling, the pressure at two ends records pressure reduction, then calculate by the flow value in its pipeline, the regulation of its accuracy value determines its worth precision height by the size of orifice size, there is the advantage that long-time stability are good, reproducible, but V taper have its fatal defects can not reversal measuring, and Venturi tube structure need take the longest design space.And, the flow detectors such as existing V taper, venturi are only applicable to the occasion of Large Diameter Pipeline mostly, as in GB, the flow detector of V taper is applicable to the occasion of more than caliber 50mm, being typically used in the main equipments such as oil, chemical industry, iron and steel, electric power, the small-sized occasion that again require inspection accuracy of measurement high this kind of for armarium is not appropriate for.
On the other hand, Medical Instruments particularly respirator, at work by gathering data on flows, judge exhaling and suction event of patient, when supplying required air-flow for patient, need the pressure difference value judging to adapt to, have effective pressure difference value only, just can be controlled effectively response, and guarantee patient will not cause uncomfortable because of control problem, and situation about even endangering occurs；Additionally when gathering, in order to detect stable flow signal, must assure that the force value at two ends all can not have the biggest fluctuation, otherwise can cause the erroneous judgement exhaling and inhaling event switching point, also also result in patient's discomfort even Harm to occur, so, in respirator, flow detector is vitals, directly determines the service behaviour of instrument.
Applicant finds a Bidirectional V-cone flowmeter through retrieval, sees the utility model patent of China CN201463943U.Effusion meter disclosed in this patent uses Bidirectional cone, and corresponding Bidirectional cone central authorities set low pressure pressure tappings, and the end positions of corresponding Bidirectional cone respectively sets a high pressure pressure tappings, and are connected to pressure switching valve on high pressure pressure tappings, are i.e. to switch to realize bidirectional measurement.Though this Bidirectional V-cone flowmeter seems and achieves bidirectional measurement, but it is still and needs switching to realize, be not suitable for respirator, anesthetic machine needs to judge to exhale and inhale the Medical Instruments of event by flow detection, and, this Bidirectional V-cone flowmeter is also only applicable to the occasion of more than caliber 50mm, and the small-sized occasion that again require inspection accuracy of measurement high this kind of for Medical Instruments is not appropriate for.
Summary of the invention
This utility model purpose is to provide a kind of Medical Instruments injecting type flow detector, and to meet, precision height that flow detector proposes by Medical Instruments, error be little and the requirement of miniaturization.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of Medical Instruments injecting type flow detector, including body always and be located at the ejectisome in straight tube body；Described straight tube body is arranged along fluid flow direction, described ejectisome includes being positioned at the spray cone at two ends in the middle part of straight section shape in the middle part of straight section shape and on fluid flow direction, two spray cone are the most symmetrical on fluid flow direction, and the cone-apex angle of described spray cone is 10 °-50 °；The length of described straight tube body is slightly shorter than or is equal to the length of ejectisome, makes the summit of two spray cone of ejectisome be positioned at or stretch out in the two-port of straight tube body, and is provided with chamfering in the two-port of straight tube body；Airflow concentration compressional zone is formed between in the middle part of the straight section shape of described straight inboard wall of tube body and ejectisome；Length L in the middle part of described straight section shape is more than 1.2 times in the middle part of straight section shape with spacing d of straight inboard wall of tube body；On described straight tube body, the cone bottom corresponding to a spray cone offers upstream pressure tappings, and the cone bottom corresponding to another spray cone offers downstream pressure tappings.
In such scheme, in the middle part of described straight section shape and between spray cone, it is additionally provided with recess, circumferentially disposed around ejectisome of this recess, make to form relief area between recess and straight inboard wall of tube body, described upstream pressure tappings and downstream pressure tappings are all corresponding to be offered towards recess.Described recess refers to the region of indent on ejectisome, it is also possible to be called groove, and its cross section can be sag vertical curve, it is also possible to be straight line knuckle etc..
In such scheme, also including that a sprue, described straight tube body are arranged in sprue, straight tube body is connected support by least one ribs and is connected to sprue；Described ribs internal corresponding described upstream pressure tappings is provided with upstream cushion chamber, and corresponding described downstream pressure tappings is provided with downstream cushion chamber, and described upstream pressure tappings is through upstream cushion chamber pass-out, and described downstream pressure tappings is through downstream cushion chamber pass-out；The sectional area of described upstream cushion chamber and volume are more than sectional area and the volume of upstream pressure tappings, and the sectional area of described downstream cushion chamber and volume are more than sectional area and the volume of downstream pressure tappings.
In such scheme, length L in the middle part of described straight section shape is 2-4 times in the middle part of straight section shape with spacing d of straight inboard wall of tube body.
In such scheme, length L in the middle part of described straight section shape is 3 times in the middle part of straight section shape with spacing d of straight inboard wall of tube body.
In such scheme, described ejectisome offers runner along fluid flow direction.
In such scheme, described ejectisome is solid construction.
Due to the application of technique scheme, this utility model has the advantage that
Owing to the special shape of ejectisome of the present utility model designs, and straight tube body two-port is provided with chamfering, can guarantee that air-flow linearly track sprays, as shown in Figure 2, increase the stability of detection data on flows, suppress the phenomenon that the flow signal error that causes due to flow trace instability is bigger, meet that precision height that flow detector proposes by Medical Instruments, error be little and the requirement of miniaturization.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment one structural representation；
Fig. 2 is the use state flow view of this utility model embodiment one；
Fig. 3 is this utility model embodiment two structure schematic front view；
Fig. 4 is that the right side of Fig. 3 regards schematic diagram；
Fig. 5 is the H-H sectional view of the first ribs cross sectional shape of representative of Fig. 3；
Fig. 6 is the H-H sectional view of representative the second ribs cross sectional shape of Fig. 3；
Fig. 7 is the H-H sectional view of the third ribs cross sectional shape of representative of Fig. 3；
Fig. 8 is this utility model embodiment three structure schematic front view.
In above figure: 1, straight tube body；101, chamfering；102 upstream pressure tappings；103, downstream pressure tappings；104, ribs；2, ejectisome；201, in the middle part of straight section shape；202, spray cone；203, recess；204, ribs；205, through hole；3, sprue；301, upstream detection mouth；302, detected downstream mouth；4, airflow concentration compressional zone；5, relief area；6, upstream cushion chamber；7, downstream cushion chamber.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:
Embodiment one: see shown in Fig. 1 and Fig. 2:
A kind of Medical Instruments injecting type flow detector, including body 1 always and the ejectisome 2 be located in straight tube body 1.
Shown in Figure 1, described straight tube body 1 is arranged along fluid flow direction, described ejectisome 2 includes in the middle part of straight section shape 201 and is positioned at the spray cone 202 at 201 two ends in the middle part of straight section shape on fluid flow direction, two spray cone 202 are the most symmetrical on fluid flow direction, the cone-apex angle α of described spray cone 202 is 10 °-50 °, preferably 20-50 °, most preferably it is exemplified as 22.5 ° or 45 °。Ejectisome 2 is supported by one or more ribs 204 and is connected on the inwall of straight tube body 1, and when ribs 204 is multiple, multiple ribs 204 are uniform in the circumference of straight tube body 1.
Shown in Figure 1, the length of described straight tube body 1 is slightly shorter than or is equal to the length of ejectisome 2, the summit making two spray cone of ejectisome 2 is positioned at or stretches out in the two-port of straight tube body 1, and in the two-port of straight tube body 1, it being provided with chamfering 101, the effect of this chamfering 101 is the linear condition of regulation output gas flow.
Shown in Figure 1, form airflow concentration compressional zone 4 in the middle part of the straight section shape of described straight tube body 1 inwall and ejectisome 2 between 201.
Shown in Figure 1, in the middle part of described straight section shape length L of 201 be in the middle part of straight section shape 201 with more than 1.2 times of spacing d of straight tube body 1 inwall, preferably more than 1.5 times, most preferably 2-4 times, the present embodiment is exemplified as 3 times.
Shown in Figure 1, on described straight tube body 1, the cone bottom corresponding to a spray cone 202 offers upstream pressure tappings 102, and the cone bottom corresponding to another spray cone offers downstream pressure tappings 103.
And, recess 203 it is additionally provided with between 201 and spray cone 202 in the middle part of described straight section shape, circumferentially disposed around ejectisome 2 of this recess 203, make to be formed between recess 203 and straight tube body 1 inwall relief area 5, described upstream pressure tappings 102 and each correspondence of downstream pressure tappings 103 are offered towards recess 203, i.e. connect relief area 5.The cross section of described recess 203 can be similar sag vertical curve, can also be straight line knuckle, if concave bottom is d2 to the distance of straight tube body 1 inwall, this d2 > d, as in Fig. 1, the approximation angle β of citing recess 203 is obtuse angle.
In reality, ejectisome 2 can not set recess 203, i.e. d2=d, be formed without relief area 5, this is the most also feasible.
The straight tube body 1 of the present embodiment and the structure of ejectisome 2 are all the most symmetrical, to meet the requirement of bidirectional measurement on fluid flow direction.
During the present embodiment work, as shown in Figure 2, no matter air-flow is to be entered by left end or in right-hand member entrance straight tube body 1, it it is all the compression through airflow concentration compressional zone 4, relief area 5 at recess 203 buffers again, eventually pass the outflow of spray cone 202 and chamfering 101 and guide, air current flow track linearly spurting or near linear spurting are flowed out, and described upstream pressure tappings 102 and downstream pressure tappings 103 connect sensor, sensor acquisition upstream pressure tappings 102 and the pressure data of downstream pressure tappings 103 also resolve, to obtain accurate data on flows.Owing to air-flow is linearly track ejection when the present embodiment uses, add the stability of detection data on flows, suppress the phenomenon that the flow signal error that causes due to flow trace instability is bigger.
From in terms of airflow direction, first recess 203 is inhibition, it is therefore an objective to adjust the curvature of flow curve, obtains the effective pressure difference used by respirator；And second recess 203 makees cushioning effect for relief area 5.
Embodiment one: see shown in Fig. 3-Fig. 7:
A kind of Medical Instruments injecting type flow detector, including body 1 always and the ejectisome 2 be located in straight tube body 1.It is with the difference of embodiment one: see shown in Fig. 3, Fig. 4, also include a sprue 3, described straight tube body 1 is arranged in sprue 3, straight tube body 1 is connected support by least one ribs 104 and is connected to sprue 3, in figure, citing is to support with three ribs 104 to be connected to sprue 3, and these three ribs 104 is uniform in the circumference of straight tube body 1.It is provided with upstream cushion chamber 6 at a ribs 104 internal corresponding described upstream pressure tappings 102, corresponding described downstream pressure tappings 103 is provided with downstream cushion chamber 7, upstream cushion chamber 6 and downstream cushion chamber 7 Hu Bu UNICOM, described upstream pressure tappings 102 is through upstream cushion chamber 6 pass-out, and described downstream pressure tappings 103 is through downstream cushion chamber 7 pass-out.It is provided with upstream detection mouth 301 facing to upstream cushion chamber 6 on the most described sprue 3, described sprue 3 is provided with detected downstream mouth 302, upstream detection mouth 301 and detected downstream mouth 302 facing to downstream cushion chamber 7 and connects the sensor of outside.The sectional area of described upstream cushion chamber 6 and volume are more than sectional area and the volume of upstream pressure tappings 102, and the sectional area of described downstream cushion chamber 7 and volume are more than sectional area and the volume of downstream pressure tappings 103.
Further, the cross sectional shape of described ribs 104 is oval, as shown in Figure 5；The cross sectional shape of described ribs 104 can also be shuttle shape, as shown in Figure 6；The cross sectional shape of described ribs 104 is Double Diamond, as shown in Figure 7.
Other, with embodiment one, repeat no more here.
Embodiment three: shown in Figure 8:
A kind of Medical Instruments injecting type flow detector, including body 1 always and the ejectisome 2 be located in straight tube body 1.Be with the difference of embodiment two: described ejectisome 2 offer a through hole 205 centrally along fluid flow direction, as runner, make, in addition to the peripheral runner of ejectisome, also to increase runner at the center of ejectisome.The quantity of described through hole 205 does not limits, and can be multiple.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All equivalence changes made according to this utility model spirit or modification, all should contain within protection domain of the present utility model.
Claims (3)
1. a Medical Instruments injecting type flow detector, it is characterised in that: include body (1) always and the ejectisome (2) being located in straight tube body (1)；Described straight tube body (1) is arranged along fluid flow direction, described ejectisome (2) includes (201) in the middle part of straight section shape and is positioned at the spray cone (202) at (201) two ends in the middle part of straight section shape on fluid flow direction, two spray cone (202) are the most symmetrical on fluid flow direction, and the cone-apex angle α of described spray cone (202) is 10 °-50 °；The length of described straight tube body (1) is slightly shorter than or is equal to the length of ejectisome (2), makes the summit of two spray cone of ejectisome (2) be positioned at or stretch out in the two-port of straight tube body (1), and is provided with chamfering (101) in the two-port of straight tube body (1)；Airflow concentration compressional zone (4) is formed between (201) in the middle part of the straight section shape of described straight tube body (1) inwall and ejectisome (2)；In the middle part of described straight section shape, length L of (201) is in the middle part of straight section shape more than 1.2 times of spacing d of (201) and straight tube body (1) inwall；On described straight tube body (1), the cone bottom corresponding to a spray cone (202) offers upstream pressure tappings (102), and the cone bottom corresponding to another spray cone offers downstream pressure tappings (103).
Medical Instruments injecting type flow detector the most according to claim 1, it is characterised in that: in the middle part of described straight section shape, length L of (201) is in the middle part of straight section shape 2-4 times of spacing d of (201) and straight tube body (1) inwall.
Medical Instruments injecting type flow detector the most according to claim 2, it is characterised in that: in the middle part of described straight section shape, length L of (201) is in the middle part of straight section shape 3 times of spacing d of (201) and straight tube body (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620232261.0U CN205580530U (en) | 2016-03-24 | 2016-03-24 | Injection formula flow detection device for medical instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620232261.0U CN205580530U (en) | 2016-03-24 | 2016-03-24 | Injection formula flow detection device for medical instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205580530U true CN205580530U (en) | 2016-09-14 |
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ID=56866143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620232261.0U Withdrawn - After Issue CN205580530U (en) | 2016-03-24 | 2016-03-24 | Injection formula flow detection device for medical instruments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205580530U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698878A (en) * | 2016-03-24 | 2016-06-22 | 苏州鱼跃医疗科技有限公司 | Jet type flow detection device for medical instrument |
| CN109238389A (en) * | 2018-09-30 | 2019-01-18 | 苏州浩谱嘉自动化装备有限公司 | A kind of Medical Instruments injecting type flow detector and application method |
-
2016
- 2016-03-24 CN CN201620232261.0U patent/CN205580530U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698878A (en) * | 2016-03-24 | 2016-06-22 | 苏州鱼跃医疗科技有限公司 | Jet type flow detection device for medical instrument |
| CN105698878B (en) * | 2016-03-24 | 2019-02-26 | 苏州鱼跃医疗科技有限公司 | Medical Instruments injecting type flow detector |
| CN109238389A (en) * | 2018-09-30 | 2019-01-18 | 苏州浩谱嘉自动化装备有限公司 | A kind of Medical Instruments injecting type flow detector and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20190226 |
|
| AV01 | Patent right actively abandoned |